diff options
Diffstat (limited to '3.4.5/4420_grsecurity-2.9.1-3.4.5-201207161807.patch')
| -rw-r--r-- | 3.4.5/4420_grsecurity-2.9.1-3.4.5-201207161807.patch | 84966 |
1 files changed, 84966 insertions, 0 deletions
diff --git a/3.4.5/4420_grsecurity-2.9.1-3.4.5-201207161807.patch b/3.4.5/4420_grsecurity-2.9.1-3.4.5-201207161807.patch new file mode 100644 index 0000000..43c8a0f --- /dev/null +++ b/3.4.5/4420_grsecurity-2.9.1-3.4.5-201207161807.patch @@ -0,0 +1,84966 @@ +diff --git a/Documentation/dontdiff b/Documentation/dontdiff +index b4a898f..a0e01d0 100644 +--- a/Documentation/dontdiff ++++ b/Documentation/dontdiff +@@ -2,9 +2,11 @@ + *.aux + *.bin + *.bz2 ++*.c.[012]*.* + *.cis + *.cpio + *.csp ++*.dbg + *.dsp + *.dvi + *.elf +@@ -14,6 +16,7 @@ + *.gcov + *.gen.S + *.gif ++*.gmo + *.grep + *.grp + *.gz +@@ -48,9 +51,11 @@ + *.tab.h + *.tex + *.ver ++*.vim + *.xml + *.xz + *_MODULES ++*_reg_safe.h + *_vga16.c + *~ + \#*# +@@ -69,6 +74,7 @@ Image + Module.markers + Module.symvers + PENDING ++PERF* + SCCS + System.map* + TAGS +@@ -80,6 +86,7 @@ aic7*seq.h* + aicasm + aicdb.h* + altivec*.c ++ashldi3.S + asm-offsets.h + asm_offsets.h + autoconf.h* +@@ -92,19 +99,24 @@ bounds.h + bsetup + btfixupprep + build ++builtin-policy.h + bvmlinux + bzImage* + capability_names.h + capflags.c + classlist.h* ++clut_vga16.c ++common-cmds.h + comp*.log + compile.h* + conf + config + config-* + config_data.h* ++config.c + config.mak + config.mak.autogen ++config.tmp + conmakehash + consolemap_deftbl.c* + cpustr.h +@@ -115,9 +127,11 @@ devlist.h* + dnotify_test + docproc + dslm ++dtc-lexer.lex.c + elf2ecoff + elfconfig.h* + evergreen_reg_safe.h ++exception_policy.conf + fixdep + flask.h + fore200e_mkfirm +@@ -125,12 +139,15 @@ fore200e_pca_fw.c* + gconf + gconf.glade.h + gen-devlist ++gen-kdb_cmds.c + gen_crc32table + gen_init_cpio + generated + genheaders + genksyms + *_gray256.c ++hash ++hid-example + hpet_example + hugepage-mmap + hugepage-shm +@@ -145,7 +162,7 @@ int32.c + int4.c + int8.c + kallsyms +-kconfig ++kern_constants.h + keywords.c + ksym.c* + ksym.h* +@@ -153,7 +170,7 @@ kxgettext + lkc_defs.h + lex.c + lex.*.c +-linux ++lib1funcs.S + logo_*.c + logo_*_clut224.c + logo_*_mono.c +@@ -164,14 +181,15 @@ machtypes.h + map + map_hugetlb + maui_boot.h +-media + mconf ++mdp + miboot* + mk_elfconfig + mkboot + mkbugboot + mkcpustr + mkdep ++mkpiggy + mkprep + mkregtable + mktables +@@ -188,6 +206,7 @@ oui.c* + page-types + parse.c + parse.h ++parse-events* + patches* + pca200e.bin + pca200e_ecd.bin2 +@@ -197,6 +216,7 @@ perf-archive + piggyback + piggy.gzip + piggy.S ++pmu-* + pnmtologo + ppc_defs.h* + pss_boot.h +@@ -207,6 +227,7 @@ r300_reg_safe.h + r420_reg_safe.h + r600_reg_safe.h + recordmcount ++regdb.c + relocs + rlim_names.h + rn50_reg_safe.h +@@ -216,7 +237,9 @@ series + setup + setup.bin + setup.elf ++size_overflow_hash.h + sImage ++slabinfo + sm_tbl* + split-include + syscalltab.h +@@ -227,6 +250,7 @@ tftpboot.img + timeconst.h + times.h* + trix_boot.h ++user_constants.h + utsrelease.h* + vdso-syms.lds + vdso.lds +@@ -238,13 +262,17 @@ vdso32.lds + vdso32.so.dbg + vdso64.lds + vdso64.so.dbg ++vdsox32.lds ++vdsox32-syms.lds + version.h* + vmImage + vmlinux + vmlinux-* + vmlinux.aout + vmlinux.bin.all ++vmlinux.bin.bz2 + vmlinux.lds ++vmlinux.relocs + vmlinuz + voffset.h + vsyscall.lds +@@ -252,9 +280,11 @@ vsyscall_32.lds + wanxlfw.inc + uImage + unifdef ++utsrelease.h + wakeup.bin + wakeup.elf + wakeup.lds + zImage* + zconf.hash.c ++zconf.lex.c + zoffset.h +diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt +index c1601e5..08557ce 100644 +--- a/Documentation/kernel-parameters.txt ++++ b/Documentation/kernel-parameters.txt +@@ -2021,6 +2021,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted. + the specified number of seconds. This is to be used if + your oopses keep scrolling off the screen. + ++ pax_nouderef [X86] disables UDEREF. Most likely needed under certain ++ virtualization environments that don't cope well with the ++ expand down segment used by UDEREF on X86-32 or the frequent ++ page table updates on X86-64. ++ ++ pax_softmode= 0/1 to disable/enable PaX softmode on boot already. ++ + pcbit= [HW,ISDN] + + pcd. [PARIDE] +diff --git a/Makefile b/Makefile +index a2e69a0..cc487da 100644 +--- a/Makefile ++++ b/Makefile +@@ -245,8 +245,9 @@ CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ + + HOSTCC = gcc + HOSTCXX = g++ +-HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer +-HOSTCXXFLAGS = -O2 ++HOSTCFLAGS = -Wall -W -Wmissing-prototypes -Wstrict-prototypes -Wno-unused-parameter -Wno-missing-field-initializers -O2 -fomit-frame-pointer -fno-delete-null-pointer-checks ++HOSTCLFAGS += $(call cc-option, -Wno-empty-body) ++HOSTCXXFLAGS = -O2 -Wall -W -fno-delete-null-pointer-checks + + # Decide whether to build built-in, modular, or both. + # Normally, just do built-in. +@@ -407,8 +408,8 @@ export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exc + # Rules shared between *config targets and build targets + + # Basic helpers built in scripts/ +-PHONY += scripts_basic +-scripts_basic: ++PHONY += scripts_basic gcc-plugins ++scripts_basic: gcc-plugins + $(Q)$(MAKE) $(build)=scripts/basic + $(Q)rm -f .tmp_quiet_recordmcount + +@@ -564,6 +565,56 @@ else + KBUILD_CFLAGS += -O2 + endif + ++ifndef DISABLE_PAX_PLUGINS ++PLUGINCC := $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-plugin.sh "$(HOSTCC)" "$(HOSTCXX)" "$(CC)") ++ifneq ($(PLUGINCC),) ++ifndef DISABLE_PAX_CONSTIFY_PLUGIN ++ifndef CONFIG_UML ++CONSTIFY_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/constify_plugin.so -DCONSTIFY_PLUGIN ++endif ++endif ++ifdef CONFIG_PAX_MEMORY_STACKLEAK ++STACKLEAK_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/stackleak_plugin.so -DSTACKLEAK_PLUGIN ++STACKLEAK_PLUGIN_CFLAGS += -fplugin-arg-stackleak_plugin-track-lowest-sp=100 ++endif ++ifdef CONFIG_KALLOCSTAT_PLUGIN ++KALLOCSTAT_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/kallocstat_plugin.so ++endif ++ifdef CONFIG_PAX_KERNEXEC_PLUGIN ++KERNEXEC_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/kernexec_plugin.so ++KERNEXEC_PLUGIN_CFLAGS += -fplugin-arg-kernexec_plugin-method=$(CONFIG_PAX_KERNEXEC_PLUGIN_METHOD) -DKERNEXEC_PLUGIN ++KERNEXEC_PLUGIN_AFLAGS := -DKERNEXEC_PLUGIN ++endif ++ifdef CONFIG_CHECKER_PLUGIN ++ifeq ($(call cc-ifversion, -ge, 0406, y), y) ++CHECKER_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/checker_plugin.so -DCHECKER_PLUGIN ++endif ++endif ++COLORIZE_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/colorize_plugin.so ++ifdef CONFIG_PAX_SIZE_OVERFLOW ++SIZE_OVERFLOW_PLUGIN := -fplugin=$(objtree)/tools/gcc/size_overflow_plugin.so -DSIZE_OVERFLOW_PLUGIN ++endif ++GCC_PLUGINS_CFLAGS := $(CONSTIFY_PLUGIN_CFLAGS) $(STACKLEAK_PLUGIN_CFLAGS) $(KALLOCSTAT_PLUGIN_CFLAGS) ++GCC_PLUGINS_CFLAGS += $(KERNEXEC_PLUGIN_CFLAGS) $(CHECKER_PLUGIN_CFLAGS) $(COLORIZE_PLUGIN_CFLAGS) $(SIZE_OVERFLOW_PLUGIN) ++GCC_PLUGINS_AFLAGS := $(KERNEXEC_PLUGIN_AFLAGS) ++export PLUGINCC CONSTIFY_PLUGIN STACKLEAK_PLUGIN KERNEXEC_PLUGIN CHECKER_PLUGIN SIZE_OVERFLOW_PLUGIN ++ifeq ($(KBUILD_EXTMOD),) ++gcc-plugins: ++ $(Q)$(MAKE) $(build)=tools/gcc ++else ++gcc-plugins: ; ++endif ++else ++gcc-plugins: ++ifeq ($(call cc-ifversion, -ge, 0405, y), y) ++ $(error Your gcc installation does not support plugins. If the necessary headers for plugin support are missing, they should be installed. On Debian, apt-get install gcc-<ver>-plugin-dev. If you choose to ignore this error and lessen the improvements provided by this patch, re-run make with the DISABLE_PAX_PLUGINS=y argument.)) ++else ++ $(Q)echo "warning, your gcc version does not support plugins, you should upgrade it to gcc 4.5 at least" ++endif ++ $(Q)echo "PAX_MEMORY_STACKLEAK and other features will be less secure" ++endif ++endif ++ + include $(srctree)/arch/$(SRCARCH)/Makefile + + ifneq ($(CONFIG_FRAME_WARN),0) +@@ -708,7 +759,7 @@ export mod_strip_cmd + + + ifeq ($(KBUILD_EXTMOD),) +-core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ ++core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ grsecurity/ + + vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ + $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ +@@ -932,6 +983,8 @@ vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE + + # The actual objects are generated when descending, + # make sure no implicit rule kicks in ++$(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) ++$(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS) + $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; + + # Handle descending into subdirectories listed in $(vmlinux-dirs) +@@ -941,7 +994,7 @@ $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; + # Error messages still appears in the original language + + PHONY += $(vmlinux-dirs) +-$(vmlinux-dirs): prepare scripts ++$(vmlinux-dirs): gcc-plugins prepare scripts + $(Q)$(MAKE) $(build)=$@ + + # Store (new) KERNELRELASE string in include/config/kernel.release +@@ -985,6 +1038,7 @@ prepare0: archprepare FORCE + $(Q)$(MAKE) $(build)=. + + # All the preparing.. ++prepare: KBUILD_CFLAGS := $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS)) + prepare: prepare0 + + # Generate some files +@@ -1092,6 +1146,8 @@ all: modules + # using awk while concatenating to the final file. + + PHONY += modules ++modules: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) ++modules: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS) + modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin + $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order + @$(kecho) ' Building modules, stage 2.'; +@@ -1107,7 +1163,7 @@ modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) + + # Target to prepare building external modules + PHONY += modules_prepare +-modules_prepare: prepare scripts ++modules_prepare: gcc-plugins prepare scripts + + # Target to install modules + PHONY += modules_install +@@ -1166,7 +1222,7 @@ CLEAN_FILES += vmlinux System.map \ + MRPROPER_DIRS += include/config usr/include include/generated \ + arch/*/include/generated + MRPROPER_FILES += .config .config.old .version .old_version \ +- include/linux/version.h \ ++ include/linux/version.h tools/gcc/size_overflow_hash.h\ + Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS + + # clean - Delete most, but leave enough to build external modules +@@ -1204,6 +1260,7 @@ distclean: mrproper + \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ + -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ + -o -name '.*.rej' \ ++ -o -name '.*.rej' -o -name '*.so' \ + -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ + -type f -print | xargs rm -f + +@@ -1364,6 +1421,8 @@ PHONY += $(module-dirs) modules + $(module-dirs): crmodverdir $(objtree)/Module.symvers + $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) + ++modules: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) ++modules: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS) + modules: $(module-dirs) + @$(kecho) ' Building modules, stage 2.'; + $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost +@@ -1490,17 +1549,21 @@ else + target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) + endif + +-%.s: %.c prepare scripts FORCE ++%.s: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) ++%.s: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS) ++%.s: %.c gcc-plugins prepare scripts FORCE + $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) + %.i: %.c prepare scripts FORCE + $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) +-%.o: %.c prepare scripts FORCE ++%.o: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) ++%.o: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS) ++%.o: %.c gcc-plugins prepare scripts FORCE + $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) + %.lst: %.c prepare scripts FORCE + $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) +-%.s: %.S prepare scripts FORCE ++%.s: %.S gcc-plugins prepare scripts FORCE + $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) +-%.o: %.S prepare scripts FORCE ++%.o: %.S gcc-plugins prepare scripts FORCE + $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) + %.symtypes: %.c prepare scripts FORCE + $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) +@@ -1510,11 +1573,15 @@ endif + $(cmd_crmodverdir) + $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ + $(build)=$(build-dir) +-%/: prepare scripts FORCE ++%/: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) ++%/: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS) ++%/: gcc-plugins prepare scripts FORCE + $(cmd_crmodverdir) + $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ + $(build)=$(build-dir) +-%.ko: prepare scripts FORCE ++%.ko: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) ++%.ko: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS) ++%.ko: gcc-plugins prepare scripts FORCE + $(cmd_crmodverdir) + $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ + $(build)=$(build-dir) $(@:.ko=.o) +diff --git a/arch/alpha/include/asm/atomic.h b/arch/alpha/include/asm/atomic.h +index 3bb7ffe..347a54c 100644 +--- a/arch/alpha/include/asm/atomic.h ++++ b/arch/alpha/include/asm/atomic.h +@@ -250,6 +250,16 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u) + #define atomic_dec(v) atomic_sub(1,(v)) + #define atomic64_dec(v) atomic64_sub(1,(v)) + ++#define atomic64_read_unchecked(v) atomic64_read(v) ++#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) ++#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) ++#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) ++#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) ++#define atomic64_inc_unchecked(v) atomic64_inc(v) ++#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) ++#define atomic64_dec_unchecked(v) atomic64_dec(v) ++#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) ++ + #define smp_mb__before_atomic_dec() smp_mb() + #define smp_mb__after_atomic_dec() smp_mb() + #define smp_mb__before_atomic_inc() smp_mb() +diff --git a/arch/alpha/include/asm/cache.h b/arch/alpha/include/asm/cache.h +index ad368a9..fbe0f25 100644 +--- a/arch/alpha/include/asm/cache.h ++++ b/arch/alpha/include/asm/cache.h +@@ -4,19 +4,19 @@ + #ifndef __ARCH_ALPHA_CACHE_H + #define __ARCH_ALPHA_CACHE_H + ++#include <linux/const.h> + + /* Bytes per L1 (data) cache line. */ + #if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_EV6) +-# define L1_CACHE_BYTES 64 + # define L1_CACHE_SHIFT 6 + #else + /* Both EV4 and EV5 are write-through, read-allocate, + direct-mapped, physical. + */ +-# define L1_CACHE_BYTES 32 + # define L1_CACHE_SHIFT 5 + #endif + ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + #define SMP_CACHE_BYTES L1_CACHE_BYTES + + #endif +diff --git a/arch/alpha/include/asm/elf.h b/arch/alpha/include/asm/elf.h +index 968d999..d36b2df 100644 +--- a/arch/alpha/include/asm/elf.h ++++ b/arch/alpha/include/asm/elf.h +@@ -91,6 +91,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; + + #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x1000000) + ++#ifdef CONFIG_PAX_ASLR ++#define PAX_ELF_ET_DYN_BASE (current->personality & ADDR_LIMIT_32BIT ? 0x10000 : 0x120000000UL) ++ ++#define PAX_DELTA_MMAP_LEN (current->personality & ADDR_LIMIT_32BIT ? 14 : 28) ++#define PAX_DELTA_STACK_LEN (current->personality & ADDR_LIMIT_32BIT ? 14 : 19) ++#endif ++ + /* $0 is set by ld.so to a pointer to a function which might be + registered using atexit. This provides a mean for the dynamic + linker to call DT_FINI functions for shared libraries that have +diff --git a/arch/alpha/include/asm/pgalloc.h b/arch/alpha/include/asm/pgalloc.h +index bc2a0da..8ad11ee 100644 +--- a/arch/alpha/include/asm/pgalloc.h ++++ b/arch/alpha/include/asm/pgalloc.h +@@ -29,6 +29,12 @@ pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd) + pgd_set(pgd, pmd); + } + ++static inline void ++pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd) ++{ ++ pgd_populate(mm, pgd, pmd); ++} ++ + extern pgd_t *pgd_alloc(struct mm_struct *mm); + + static inline void +diff --git a/arch/alpha/include/asm/pgtable.h b/arch/alpha/include/asm/pgtable.h +index 81a4342..348b927 100644 +--- a/arch/alpha/include/asm/pgtable.h ++++ b/arch/alpha/include/asm/pgtable.h +@@ -102,6 +102,17 @@ struct vm_area_struct; + #define PAGE_SHARED __pgprot(_PAGE_VALID | __ACCESS_BITS) + #define PAGE_COPY __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW) + #define PAGE_READONLY __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW) ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++# define PAGE_SHARED_NOEXEC __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOE) ++# define PAGE_COPY_NOEXEC __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW | _PAGE_FOE) ++# define PAGE_READONLY_NOEXEC __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW | _PAGE_FOE) ++#else ++# define PAGE_SHARED_NOEXEC PAGE_SHARED ++# define PAGE_COPY_NOEXEC PAGE_COPY ++# define PAGE_READONLY_NOEXEC PAGE_READONLY ++#endif ++ + #define PAGE_KERNEL __pgprot(_PAGE_VALID | _PAGE_ASM | _PAGE_KRE | _PAGE_KWE) + + #define _PAGE_NORMAL(x) __pgprot(_PAGE_VALID | __ACCESS_BITS | (x)) +diff --git a/arch/alpha/kernel/module.c b/arch/alpha/kernel/module.c +index 2fd00b7..cfd5069 100644 +--- a/arch/alpha/kernel/module.c ++++ b/arch/alpha/kernel/module.c +@@ -160,7 +160,7 @@ apply_relocate_add(Elf64_Shdr *sechdrs, const char *strtab, + + /* The small sections were sorted to the end of the segment. + The following should definitely cover them. */ +- gp = (u64)me->module_core + me->core_size - 0x8000; ++ gp = (u64)me->module_core_rw + me->core_size_rw - 0x8000; + got = sechdrs[me->arch.gotsecindex].sh_addr; + + for (i = 0; i < n; i++) { +diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c +index 49ee319..9ee7d14 100644 +--- a/arch/alpha/kernel/osf_sys.c ++++ b/arch/alpha/kernel/osf_sys.c +@@ -1146,7 +1146,7 @@ arch_get_unmapped_area_1(unsigned long addr, unsigned long len, + /* At this point: (!vma || addr < vma->vm_end). */ + if (limit - len < addr) + return -ENOMEM; +- if (!vma || addr + len <= vma->vm_start) ++ if (check_heap_stack_gap(vma, addr, len)) + return addr; + addr = vma->vm_end; + vma = vma->vm_next; +@@ -1182,6 +1182,10 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, + merely specific addresses, but regions of memory -- perhaps + this feature should be incorporated into all ports? */ + ++#ifdef CONFIG_PAX_RANDMMAP ++ if (!(current->mm->pax_flags & MF_PAX_RANDMMAP)) ++#endif ++ + if (addr) { + addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit); + if (addr != (unsigned long) -ENOMEM) +@@ -1189,8 +1193,8 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, + } + + /* Next, try allocating at TASK_UNMAPPED_BASE. */ +- addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE), +- len, limit); ++ addr = arch_get_unmapped_area_1 (PAGE_ALIGN(current->mm->mmap_base), len, limit); ++ + if (addr != (unsigned long) -ENOMEM) + return addr; + +diff --git a/arch/alpha/mm/fault.c b/arch/alpha/mm/fault.c +index 5eecab1..609abc0 100644 +--- a/arch/alpha/mm/fault.c ++++ b/arch/alpha/mm/fault.c +@@ -53,6 +53,124 @@ __load_new_mm_context(struct mm_struct *next_mm) + __reload_thread(pcb); + } + ++#ifdef CONFIG_PAX_PAGEEXEC ++/* ++ * PaX: decide what to do with offenders (regs->pc = fault address) ++ * ++ * returns 1 when task should be killed ++ * 2 when patched PLT trampoline was detected ++ * 3 when unpatched PLT trampoline was detected ++ */ ++static int pax_handle_fetch_fault(struct pt_regs *regs) ++{ ++ ++#ifdef CONFIG_PAX_EMUPLT ++ int err; ++ ++ do { /* PaX: patched PLT emulation #1 */ ++ unsigned int ldah, ldq, jmp; ++ ++ err = get_user(ldah, (unsigned int *)regs->pc); ++ err |= get_user(ldq, (unsigned int *)(regs->pc+4)); ++ err |= get_user(jmp, (unsigned int *)(regs->pc+8)); ++ ++ if (err) ++ break; ++ ++ if ((ldah & 0xFFFF0000U) == 0x277B0000U && ++ (ldq & 0xFFFF0000U) == 0xA77B0000U && ++ jmp == 0x6BFB0000U) ++ { ++ unsigned long r27, addr; ++ unsigned long addrh = (ldah | 0xFFFFFFFFFFFF0000UL) << 16; ++ unsigned long addrl = ldq | 0xFFFFFFFFFFFF0000UL; ++ ++ addr = regs->r27 + ((addrh ^ 0x80000000UL) + 0x80000000UL) + ((addrl ^ 0x8000UL) + 0x8000UL); ++ err = get_user(r27, (unsigned long *)addr); ++ if (err) ++ break; ++ ++ regs->r27 = r27; ++ regs->pc = r27; ++ return 2; ++ } ++ } while (0); ++ ++ do { /* PaX: patched PLT emulation #2 */ ++ unsigned int ldah, lda, br; ++ ++ err = get_user(ldah, (unsigned int *)regs->pc); ++ err |= get_user(lda, (unsigned int *)(regs->pc+4)); ++ err |= get_user(br, (unsigned int *)(regs->pc+8)); ++ ++ if (err) ++ break; ++ ++ if ((ldah & 0xFFFF0000U) == 0x277B0000U && ++ (lda & 0xFFFF0000U) == 0xA77B0000U && ++ (br & 0xFFE00000U) == 0xC3E00000U) ++ { ++ unsigned long addr = br | 0xFFFFFFFFFFE00000UL; ++ unsigned long addrh = (ldah | 0xFFFFFFFFFFFF0000UL) << 16; ++ unsigned long addrl = lda | 0xFFFFFFFFFFFF0000UL; ++ ++ regs->r27 += ((addrh ^ 0x80000000UL) + 0x80000000UL) + ((addrl ^ 0x8000UL) + 0x8000UL); ++ regs->pc += 12 + (((addr ^ 0x00100000UL) + 0x00100000UL) << 2); ++ return 2; ++ } ++ } while (0); ++ ++ do { /* PaX: unpatched PLT emulation */ ++ unsigned int br; ++ ++ err = get_user(br, (unsigned int *)regs->pc); ++ ++ if (!err && (br & 0xFFE00000U) == 0xC3800000U) { ++ unsigned int br2, ldq, nop, jmp; ++ unsigned long addr = br | 0xFFFFFFFFFFE00000UL, resolver; ++ ++ addr = regs->pc + 4 + (((addr ^ 0x00100000UL) + 0x00100000UL) << 2); ++ err = get_user(br2, (unsigned int *)addr); ++ err |= get_user(ldq, (unsigned int *)(addr+4)); ++ err |= get_user(nop, (unsigned int *)(addr+8)); ++ err |= get_user(jmp, (unsigned int *)(addr+12)); ++ err |= get_user(resolver, (unsigned long *)(addr+16)); ++ ++ if (err) ++ break; ++ ++ if (br2 == 0xC3600000U && ++ ldq == 0xA77B000CU && ++ nop == 0x47FF041FU && ++ jmp == 0x6B7B0000U) ++ { ++ regs->r28 = regs->pc+4; ++ regs->r27 = addr+16; ++ regs->pc = resolver; ++ return 3; ++ } ++ } ++ } while (0); ++#endif ++ ++ return 1; ++} ++ ++void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) ++{ ++ unsigned long i; ++ ++ printk(KERN_ERR "PAX: bytes at PC: "); ++ for (i = 0; i < 5; i++) { ++ unsigned int c; ++ if (get_user(c, (unsigned int *)pc+i)) ++ printk(KERN_CONT "???????? "); ++ else ++ printk(KERN_CONT "%08x ", c); ++ } ++ printk("\n"); ++} ++#endif + + /* + * This routine handles page faults. It determines the address, +@@ -130,8 +248,29 @@ do_page_fault(unsigned long address, unsigned long mmcsr, + good_area: + si_code = SEGV_ACCERR; + if (cause < 0) { +- if (!(vma->vm_flags & VM_EXEC)) ++ if (!(vma->vm_flags & VM_EXEC)) { ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || address != regs->pc) ++ goto bad_area; ++ ++ up_read(&mm->mmap_sem); ++ switch (pax_handle_fetch_fault(regs)) { ++ ++#ifdef CONFIG_PAX_EMUPLT ++ case 2: ++ case 3: ++ return; ++#endif ++ ++ } ++ pax_report_fault(regs, (void *)regs->pc, (void *)rdusp()); ++ do_group_exit(SIGKILL); ++#else + goto bad_area; ++#endif ++ ++ } + } else if (!cause) { + /* Allow reads even for write-only mappings */ + if (!(vma->vm_flags & (VM_READ | VM_WRITE))) +diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h +index 68374ba..cff7196 100644 +--- a/arch/arm/include/asm/atomic.h ++++ b/arch/arm/include/asm/atomic.h +@@ -17,17 +17,35 @@ + #include <asm/barrier.h> + #include <asm/cmpxchg.h> + ++#ifdef CONFIG_GENERIC_ATOMIC64 ++#include <asm-generic/atomic64.h> ++#endif ++ + #define ATOMIC_INIT(i) { (i) } + + #ifdef __KERNEL__ + ++#define _ASM_EXTABLE(from, to) \ ++" .pushsection __ex_table,\"a\"\n"\ ++" .align 3\n" \ ++" .long " #from ", " #to"\n" \ ++" .popsection" ++ + /* + * On ARM, ordinary assignment (str instruction) doesn't clear the local + * strex/ldrex monitor on some implementations. The reason we can use it for + * atomic_set() is the clrex or dummy strex done on every exception return. + */ + #define atomic_read(v) (*(volatile int *)&(v)->counter) ++static inline int atomic_read_unchecked(const atomic_unchecked_t *v) ++{ ++ return v->counter; ++} + #define atomic_set(v,i) (((v)->counter) = (i)) ++static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i) ++{ ++ v->counter = i; ++} + + #if __LINUX_ARM_ARCH__ >= 6 + +@@ -42,6 +60,35 @@ static inline void atomic_add(int i, atomic_t *v) + int result; + + __asm__ __volatile__("@ atomic_add\n" ++"1: ldrex %1, [%3]\n" ++" adds %0, %1, %4\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++" bvc 3f\n" ++"2: bkpt 0xf103\n" ++"3:\n" ++#endif ++ ++" strex %1, %0, [%3]\n" ++" teq %1, #0\n" ++" bne 1b" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++"\n4:\n" ++ _ASM_EXTABLE(2b, 4b) ++#endif ++ ++ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) ++ : "r" (&v->counter), "Ir" (i) ++ : "cc"); ++} ++ ++static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v) ++{ ++ unsigned long tmp; ++ int result; ++ ++ __asm__ __volatile__("@ atomic_add_unchecked\n" + "1: ldrex %0, [%3]\n" + " add %0, %0, %4\n" + " strex %1, %0, [%3]\n" +@@ -60,6 +107,42 @@ static inline int atomic_add_return(int i, atomic_t *v) + smp_mb(); + + __asm__ __volatile__("@ atomic_add_return\n" ++"1: ldrex %1, [%3]\n" ++" adds %0, %1, %4\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++" bvc 3f\n" ++" mov %0, %1\n" ++"2: bkpt 0xf103\n" ++"3:\n" ++#endif ++ ++" strex %1, %0, [%3]\n" ++" teq %1, #0\n" ++" bne 1b" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++"\n4:\n" ++ _ASM_EXTABLE(2b, 4b) ++#endif ++ ++ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) ++ : "r" (&v->counter), "Ir" (i) ++ : "cc"); ++ ++ smp_mb(); ++ ++ return result; ++} ++ ++static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v) ++{ ++ unsigned long tmp; ++ int result; ++ ++ smp_mb(); ++ ++ __asm__ __volatile__("@ atomic_add_return_unchecked\n" + "1: ldrex %0, [%3]\n" + " add %0, %0, %4\n" + " strex %1, %0, [%3]\n" +@@ -80,6 +163,35 @@ static inline void atomic_sub(int i, atomic_t *v) + int result; + + __asm__ __volatile__("@ atomic_sub\n" ++"1: ldrex %1, [%3]\n" ++" subs %0, %1, %4\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++" bvc 3f\n" ++"2: bkpt 0xf103\n" ++"3:\n" ++#endif ++ ++" strex %1, %0, [%3]\n" ++" teq %1, #0\n" ++" bne 1b" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++"\n4:\n" ++ _ASM_EXTABLE(2b, 4b) ++#endif ++ ++ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) ++ : "r" (&v->counter), "Ir" (i) ++ : "cc"); ++} ++ ++static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v) ++{ ++ unsigned long tmp; ++ int result; ++ ++ __asm__ __volatile__("@ atomic_sub_unchecked\n" + "1: ldrex %0, [%3]\n" + " sub %0, %0, %4\n" + " strex %1, %0, [%3]\n" +@@ -98,11 +210,25 @@ static inline int atomic_sub_return(int i, atomic_t *v) + smp_mb(); + + __asm__ __volatile__("@ atomic_sub_return\n" +-"1: ldrex %0, [%3]\n" +-" sub %0, %0, %4\n" ++"1: ldrex %1, [%3]\n" ++" sub %0, %1, %4\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++" bvc 3f\n" ++" mov %0, %1\n" ++"2: bkpt 0xf103\n" ++"3:\n" ++#endif ++ + " strex %1, %0, [%3]\n" + " teq %1, #0\n" + " bne 1b" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++"\n4:\n" ++ _ASM_EXTABLE(2b, 4b) ++#endif ++ + : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) + : "r" (&v->counter), "Ir" (i) + : "cc"); +@@ -134,6 +260,28 @@ static inline int atomic_cmpxchg(atomic_t *ptr, int old, int new) + return oldval; + } + ++static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *ptr, int old, int new) ++{ ++ unsigned long oldval, res; ++ ++ smp_mb(); ++ ++ do { ++ __asm__ __volatile__("@ atomic_cmpxchg_unchecked\n" ++ "ldrex %1, [%3]\n" ++ "mov %0, #0\n" ++ "teq %1, %4\n" ++ "strexeq %0, %5, [%3]\n" ++ : "=&r" (res), "=&r" (oldval), "+Qo" (ptr->counter) ++ : "r" (&ptr->counter), "Ir" (old), "r" (new) ++ : "cc"); ++ } while (res); ++ ++ smp_mb(); ++ ++ return oldval; ++} ++ + static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) + { + unsigned long tmp, tmp2; +@@ -167,7 +315,17 @@ static inline int atomic_add_return(int i, atomic_t *v) + + return val; + } ++ ++static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v) ++{ ++ return atomic_add_return(i, v); ++} ++ + #define atomic_add(i, v) (void) atomic_add_return(i, v) ++static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v) ++{ ++ (void) atomic_add_return(i, v); ++} + + static inline int atomic_sub_return(int i, atomic_t *v) + { +@@ -182,6 +340,10 @@ static inline int atomic_sub_return(int i, atomic_t *v) + return val; + } + #define atomic_sub(i, v) (void) atomic_sub_return(i, v) ++static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v) ++{ ++ (void) atomic_sub_return(i, v); ++} + + static inline int atomic_cmpxchg(atomic_t *v, int old, int new) + { +@@ -197,6 +359,11 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new) + return ret; + } + ++static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new) ++{ ++ return atomic_cmpxchg(v, old, new); ++} ++ + static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) + { + unsigned long flags; +@@ -209,6 +376,10 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) + #endif /* __LINUX_ARM_ARCH__ */ + + #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) ++static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new) ++{ ++ return xchg(&v->counter, new); ++} + + static inline int __atomic_add_unless(atomic_t *v, int a, int u) + { +@@ -221,11 +392,27 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u) + } + + #define atomic_inc(v) atomic_add(1, v) ++static inline void atomic_inc_unchecked(atomic_unchecked_t *v) ++{ ++ atomic_add_unchecked(1, v); ++} + #define atomic_dec(v) atomic_sub(1, v) ++static inline void atomic_dec_unchecked(atomic_unchecked_t *v) ++{ ++ atomic_sub_unchecked(1, v); ++} + + #define atomic_inc_and_test(v) (atomic_add_return(1, v) == 0) ++static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v) ++{ ++ return atomic_add_return_unchecked(1, v) == 0; ++} + #define atomic_dec_and_test(v) (atomic_sub_return(1, v) == 0) + #define atomic_inc_return(v) (atomic_add_return(1, v)) ++static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v) ++{ ++ return atomic_add_return_unchecked(1, v); ++} + #define atomic_dec_return(v) (atomic_sub_return(1, v)) + #define atomic_sub_and_test(i, v) (atomic_sub_return(i, v) == 0) + +@@ -241,6 +428,14 @@ typedef struct { + u64 __aligned(8) counter; + } atomic64_t; + ++#ifdef CONFIG_PAX_REFCOUNT ++typedef struct { ++ u64 __aligned(8) counter; ++} atomic64_unchecked_t; ++#else ++typedef atomic64_t atomic64_unchecked_t; ++#endif ++ + #define ATOMIC64_INIT(i) { (i) } + + static inline u64 atomic64_read(atomic64_t *v) +@@ -256,6 +451,19 @@ static inline u64 atomic64_read(atomic64_t *v) + return result; + } + ++static inline u64 atomic64_read_unchecked(atomic64_unchecked_t *v) ++{ ++ u64 result; ++ ++ __asm__ __volatile__("@ atomic64_read_unchecked\n" ++" ldrexd %0, %H0, [%1]" ++ : "=&r" (result) ++ : "r" (&v->counter), "Qo" (v->counter) ++ ); ++ ++ return result; ++} ++ + static inline void atomic64_set(atomic64_t *v, u64 i) + { + u64 tmp; +@@ -270,6 +478,20 @@ static inline void atomic64_set(atomic64_t *v, u64 i) + : "cc"); + } + ++static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, u64 i) ++{ ++ u64 tmp; ++ ++ __asm__ __volatile__("@ atomic64_set_unchecked\n" ++"1: ldrexd %0, %H0, [%2]\n" ++" strexd %0, %3, %H3, [%2]\n" ++" teq %0, #0\n" ++" bne 1b" ++ : "=&r" (tmp), "=Qo" (v->counter) ++ : "r" (&v->counter), "r" (i) ++ : "cc"); ++} ++ + static inline void atomic64_add(u64 i, atomic64_t *v) + { + u64 result; +@@ -278,6 +500,36 @@ static inline void atomic64_add(u64 i, atomic64_t *v) + __asm__ __volatile__("@ atomic64_add\n" + "1: ldrexd %0, %H0, [%3]\n" + " adds %0, %0, %4\n" ++" adcs %H0, %H0, %H4\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++" bvc 3f\n" ++"2: bkpt 0xf103\n" ++"3:\n" ++#endif ++ ++" strexd %1, %0, %H0, [%3]\n" ++" teq %1, #0\n" ++" bne 1b" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++"\n4:\n" ++ _ASM_EXTABLE(2b, 4b) ++#endif ++ ++ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) ++ : "r" (&v->counter), "r" (i) ++ : "cc"); ++} ++ ++static inline void atomic64_add_unchecked(u64 i, atomic64_unchecked_t *v) ++{ ++ u64 result; ++ unsigned long tmp; ++ ++ __asm__ __volatile__("@ atomic64_add_unchecked\n" ++"1: ldrexd %0, %H0, [%3]\n" ++" adds %0, %0, %4\n" + " adc %H0, %H0, %H4\n" + " strexd %1, %0, %H0, [%3]\n" + " teq %1, #0\n" +@@ -289,12 +541,49 @@ static inline void atomic64_add(u64 i, atomic64_t *v) + + static inline u64 atomic64_add_return(u64 i, atomic64_t *v) + { +- u64 result; +- unsigned long tmp; ++ u64 result, tmp; + + smp_mb(); + + __asm__ __volatile__("@ atomic64_add_return\n" ++"1: ldrexd %1, %H1, [%3]\n" ++" adds %0, %1, %4\n" ++" adcs %H0, %H1, %H4\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++" bvc 3f\n" ++" mov %0, %1\n" ++" mov %H0, %H1\n" ++"2: bkpt 0xf103\n" ++"3:\n" ++#endif ++ ++" strexd %1, %0, %H0, [%3]\n" ++" teq %1, #0\n" ++" bne 1b" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++"\n4:\n" ++ _ASM_EXTABLE(2b, 4b) ++#endif ++ ++ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) ++ : "r" (&v->counter), "r" (i) ++ : "cc"); ++ ++ smp_mb(); ++ ++ return result; ++} ++ ++static inline u64 atomic64_add_return_unchecked(u64 i, atomic64_unchecked_t *v) ++{ ++ u64 result; ++ unsigned long tmp; ++ ++ smp_mb(); ++ ++ __asm__ __volatile__("@ atomic64_add_return_unchecked\n" + "1: ldrexd %0, %H0, [%3]\n" + " adds %0, %0, %4\n" + " adc %H0, %H0, %H4\n" +@@ -318,6 +607,36 @@ static inline void atomic64_sub(u64 i, atomic64_t *v) + __asm__ __volatile__("@ atomic64_sub\n" + "1: ldrexd %0, %H0, [%3]\n" + " subs %0, %0, %4\n" ++" sbcs %H0, %H0, %H4\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++" bvc 3f\n" ++"2: bkpt 0xf103\n" ++"3:\n" ++#endif ++ ++" strexd %1, %0, %H0, [%3]\n" ++" teq %1, #0\n" ++" bne 1b" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++"\n4:\n" ++ _ASM_EXTABLE(2b, 4b) ++#endif ++ ++ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) ++ : "r" (&v->counter), "r" (i) ++ : "cc"); ++} ++ ++static inline void atomic64_sub_unchecked(u64 i, atomic64_unchecked_t *v) ++{ ++ u64 result; ++ unsigned long tmp; ++ ++ __asm__ __volatile__("@ atomic64_sub_unchecked\n" ++"1: ldrexd %0, %H0, [%3]\n" ++" subs %0, %0, %4\n" + " sbc %H0, %H0, %H4\n" + " strexd %1, %0, %H0, [%3]\n" + " teq %1, #0\n" +@@ -329,18 +648,32 @@ static inline void atomic64_sub(u64 i, atomic64_t *v) + + static inline u64 atomic64_sub_return(u64 i, atomic64_t *v) + { +- u64 result; +- unsigned long tmp; ++ u64 result, tmp; + + smp_mb(); + + __asm__ __volatile__("@ atomic64_sub_return\n" +-"1: ldrexd %0, %H0, [%3]\n" +-" subs %0, %0, %4\n" +-" sbc %H0, %H0, %H4\n" ++"1: ldrexd %1, %H1, [%3]\n" ++" subs %0, %1, %4\n" ++" sbc %H0, %H1, %H4\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++" bvc 3f\n" ++" mov %0, %1\n" ++" mov %H0, %H1\n" ++"2: bkpt 0xf103\n" ++"3:\n" ++#endif ++ + " strexd %1, %0, %H0, [%3]\n" + " teq %1, #0\n" + " bne 1b" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++"\n4:\n" ++ _ASM_EXTABLE(2b, 4b) ++#endif ++ + : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) + : "r" (&v->counter), "r" (i) + : "cc"); +@@ -374,6 +707,30 @@ static inline u64 atomic64_cmpxchg(atomic64_t *ptr, u64 old, u64 new) + return oldval; + } + ++static inline u64 atomic64_cmpxchg_unchecked(atomic64_unchecked_t *ptr, u64 old, u64 new) ++{ ++ u64 oldval; ++ unsigned long res; ++ ++ smp_mb(); ++ ++ do { ++ __asm__ __volatile__("@ atomic64_cmpxchg_unchecked\n" ++ "ldrexd %1, %H1, [%3]\n" ++ "mov %0, #0\n" ++ "teq %1, %4\n" ++ "teqeq %H1, %H4\n" ++ "strexdeq %0, %5, %H5, [%3]" ++ : "=&r" (res), "=&r" (oldval), "+Qo" (ptr->counter) ++ : "r" (&ptr->counter), "r" (old), "r" (new) ++ : "cc"); ++ } while (res); ++ ++ smp_mb(); ++ ++ return oldval; ++} ++ + static inline u64 atomic64_xchg(atomic64_t *ptr, u64 new) + { + u64 result; +@@ -397,21 +754,34 @@ static inline u64 atomic64_xchg(atomic64_t *ptr, u64 new) + + static inline u64 atomic64_dec_if_positive(atomic64_t *v) + { +- u64 result; +- unsigned long tmp; ++ u64 result, tmp; + + smp_mb(); + + __asm__ __volatile__("@ atomic64_dec_if_positive\n" +-"1: ldrexd %0, %H0, [%3]\n" +-" subs %0, %0, #1\n" +-" sbc %H0, %H0, #0\n" ++"1: ldrexd %1, %H1, [%3]\n" ++" subs %0, %1, #1\n" ++" sbc %H0, %H1, #0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++" bvc 3f\n" ++" mov %0, %1\n" ++" mov %H0, %H1\n" ++"2: bkpt 0xf103\n" ++"3:\n" ++#endif ++ + " teq %H0, #0\n" +-" bmi 2f\n" ++" bmi 4f\n" + " strexd %1, %0, %H0, [%3]\n" + " teq %1, #0\n" + " bne 1b\n" +-"2:" ++"4:\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ _ASM_EXTABLE(2b, 4b) ++#endif ++ + : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter) + : "r" (&v->counter) + : "cc"); +@@ -434,13 +804,25 @@ static inline int atomic64_add_unless(atomic64_t *v, u64 a, u64 u) + " teq %0, %5\n" + " teqeq %H0, %H5\n" + " moveq %1, #0\n" +-" beq 2f\n" ++" beq 4f\n" + " adds %0, %0, %6\n" + " adc %H0, %H0, %H6\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++" bvc 3f\n" ++"2: bkpt 0xf103\n" ++"3:\n" ++#endif ++ + " strexd %2, %0, %H0, [%4]\n" + " teq %2, #0\n" + " bne 1b\n" +-"2:" ++"4:\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ _ASM_EXTABLE(2b, 4b) ++#endif ++ + : "=&r" (val), "+r" (ret), "=&r" (tmp), "+Qo" (v->counter) + : "r" (&v->counter), "r" (u), "r" (a) + : "cc"); +@@ -453,10 +835,13 @@ static inline int atomic64_add_unless(atomic64_t *v, u64 a, u64 u) + + #define atomic64_add_negative(a, v) (atomic64_add_return((a), (v)) < 0) + #define atomic64_inc(v) atomic64_add(1LL, (v)) ++#define atomic64_inc_unchecked(v) atomic64_add_unchecked(1LL, (v)) + #define atomic64_inc_return(v) atomic64_add_return(1LL, (v)) ++#define atomic64_inc_return_unchecked(v) atomic64_add_return_unchecked(1LL, (v)) + #define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0) + #define atomic64_sub_and_test(a, v) (atomic64_sub_return((a), (v)) == 0) + #define atomic64_dec(v) atomic64_sub(1LL, (v)) ++#define atomic64_dec_unchecked(v) atomic64_sub_unchecked(1LL, (v)) + #define atomic64_dec_return(v) atomic64_sub_return(1LL, (v)) + #define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0) + #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1LL, 0LL) +diff --git a/arch/arm/include/asm/cache.h b/arch/arm/include/asm/cache.h +index 75fe66b..2255c86 100644 +--- a/arch/arm/include/asm/cache.h ++++ b/arch/arm/include/asm/cache.h +@@ -4,8 +4,10 @@ + #ifndef __ASMARM_CACHE_H + #define __ASMARM_CACHE_H + ++#include <linux/const.h> ++ + #define L1_CACHE_SHIFT CONFIG_ARM_L1_CACHE_SHIFT +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + /* + * Memory returned by kmalloc() may be used for DMA, so we must make +diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h +index 1252a26..9dc17b5 100644 +--- a/arch/arm/include/asm/cacheflush.h ++++ b/arch/arm/include/asm/cacheflush.h +@@ -108,7 +108,7 @@ struct cpu_cache_fns { + void (*dma_unmap_area)(const void *, size_t, int); + + void (*dma_flush_range)(const void *, const void *); +-}; ++} __no_const; + + /* + * Select the calling method +diff --git a/arch/arm/include/asm/cmpxchg.h b/arch/arm/include/asm/cmpxchg.h +index d41d7cb..9bea5e0 100644 +--- a/arch/arm/include/asm/cmpxchg.h ++++ b/arch/arm/include/asm/cmpxchg.h +@@ -102,6 +102,8 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size + + #define xchg(ptr,x) \ + ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) ++#define xchg_unchecked(ptr,x) \ ++ ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) + + #include <asm-generic/cmpxchg-local.h> + +diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h +index 38050b1..9d90e8b 100644 +--- a/arch/arm/include/asm/elf.h ++++ b/arch/arm/include/asm/elf.h +@@ -116,7 +116,14 @@ int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs); + the loader. We need to make sure that it is out of the way of the program + that it will "exec", and that there is sufficient room for the brk. */ + +-#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) ++#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) ++ ++#ifdef CONFIG_PAX_ASLR ++#define PAX_ELF_ET_DYN_BASE 0x00008000UL ++ ++#define PAX_DELTA_MMAP_LEN ((current->personality == PER_LINUX_32BIT) ? 16 : 10) ++#define PAX_DELTA_STACK_LEN ((current->personality == PER_LINUX_32BIT) ? 16 : 10) ++#endif + + /* When the program starts, a1 contains a pointer to a function to be + registered with atexit, as per the SVR4 ABI. A value of 0 means we +@@ -126,8 +133,4 @@ int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs); + extern void elf_set_personality(const struct elf32_hdr *); + #define SET_PERSONALITY(ex) elf_set_personality(&(ex)) + +-struct mm_struct; +-extern unsigned long arch_randomize_brk(struct mm_struct *mm); +-#define arch_randomize_brk arch_randomize_brk +- + #endif +diff --git a/arch/arm/include/asm/kmap_types.h b/arch/arm/include/asm/kmap_types.h +index e51b1e8..32a3113 100644 +--- a/arch/arm/include/asm/kmap_types.h ++++ b/arch/arm/include/asm/kmap_types.h +@@ -21,6 +21,7 @@ enum km_type { + KM_L1_CACHE, + KM_L2_CACHE, + KM_KDB, ++ KM_CLEARPAGE, + KM_TYPE_NR + }; + +diff --git a/arch/arm/include/asm/outercache.h b/arch/arm/include/asm/outercache.h +index 53426c6..c7baff3 100644 +--- a/arch/arm/include/asm/outercache.h ++++ b/arch/arm/include/asm/outercache.h +@@ -35,7 +35,7 @@ struct outer_cache_fns { + #endif + void (*set_debug)(unsigned long); + void (*resume)(void); +-}; ++} __no_const; + + #ifdef CONFIG_OUTER_CACHE + +diff --git a/arch/arm/include/asm/page.h b/arch/arm/include/asm/page.h +index 5838361..da6e813 100644 +--- a/arch/arm/include/asm/page.h ++++ b/arch/arm/include/asm/page.h +@@ -123,7 +123,7 @@ struct cpu_user_fns { + void (*cpu_clear_user_highpage)(struct page *page, unsigned long vaddr); + void (*cpu_copy_user_highpage)(struct page *to, struct page *from, + unsigned long vaddr, struct vm_area_struct *vma); +-}; ++} __no_const; + + #ifdef MULTI_USER + extern struct cpu_user_fns cpu_user; +diff --git a/arch/arm/include/asm/pgalloc.h b/arch/arm/include/asm/pgalloc.h +index 943504f..bf8d667 100644 +--- a/arch/arm/include/asm/pgalloc.h ++++ b/arch/arm/include/asm/pgalloc.h +@@ -43,6 +43,11 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) + set_pud(pud, __pud(__pa(pmd) | PMD_TYPE_TABLE)); + } + ++static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) ++{ ++ pud_populate(mm, pud, pmd); ++} ++ + #else /* !CONFIG_ARM_LPAE */ + + /* +@@ -51,6 +56,7 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) + #define pmd_alloc_one(mm,addr) ({ BUG(); ((pmd_t *)2); }) + #define pmd_free(mm, pmd) do { } while (0) + #define pud_populate(mm,pmd,pte) BUG() ++#define pud_populate_kernel(mm,pmd,pte) BUG() + + #endif /* CONFIG_ARM_LPAE */ + +diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h +index 0f04d84..2be5648 100644 +--- a/arch/arm/include/asm/thread_info.h ++++ b/arch/arm/include/asm/thread_info.h +@@ -148,6 +148,12 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *, + #define TIF_NOTIFY_RESUME 2 /* callback before returning to user */ + #define TIF_SYSCALL_TRACE 8 + #define TIF_SYSCALL_AUDIT 9 ++ ++/* within 8 bits of TIF_SYSCALL_TRACE ++ to meet flexible second operand requirements ++*/ ++#define TIF_GRSEC_SETXID 10 ++ + #define TIF_POLLING_NRFLAG 16 + #define TIF_USING_IWMMXT 17 + #define TIF_MEMDIE 18 /* is terminating due to OOM killer */ +@@ -163,9 +169,11 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *, + #define _TIF_USING_IWMMXT (1 << TIF_USING_IWMMXT) + #define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) + #define _TIF_SECCOMP (1 << TIF_SECCOMP) ++#define _TIF_GRSEC_SETXID (1 << TIF_GRSEC_SETXID) + + /* Checks for any syscall work in entry-common.S */ +-#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT) ++#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \ ++ _TIF_GRSEC_SETXID) + + /* + * Change these and you break ASM code in entry-common.S +diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h +index 71f6536..602f279 100644 +--- a/arch/arm/include/asm/uaccess.h ++++ b/arch/arm/include/asm/uaccess.h +@@ -22,6 +22,8 @@ + #define VERIFY_READ 0 + #define VERIFY_WRITE 1 + ++extern void check_object_size(const void *ptr, unsigned long n, bool to); ++ + /* + * The exception table consists of pairs of addresses: the first is the + * address of an instruction that is allowed to fault, and the second is +@@ -387,8 +389,23 @@ do { \ + + + #ifdef CONFIG_MMU +-extern unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n); +-extern unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n); ++extern unsigned long __must_check ___copy_from_user(void *to, const void __user *from, unsigned long n); ++extern unsigned long __must_check ___copy_to_user(void __user *to, const void *from, unsigned long n); ++ ++static inline unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n) ++{ ++ if (!__builtin_constant_p(n)) ++ check_object_size(to, n, false); ++ return ___copy_from_user(to, from, n); ++} ++ ++static inline unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n) ++{ ++ if (!__builtin_constant_p(n)) ++ check_object_size(from, n, true); ++ return ___copy_to_user(to, from, n); ++} ++ + extern unsigned long __must_check __copy_to_user_std(void __user *to, const void *from, unsigned long n); + extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n); + extern unsigned long __must_check __clear_user_std(void __user *addr, unsigned long n); +@@ -403,6 +420,9 @@ extern unsigned long __must_check __strnlen_user(const char __user *s, long n); + + static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n) + { ++ if ((long)n < 0) ++ return n; ++ + if (access_ok(VERIFY_READ, from, n)) + n = __copy_from_user(to, from, n); + else /* security hole - plug it */ +@@ -412,6 +432,9 @@ static inline unsigned long __must_check copy_from_user(void *to, const void __u + + static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n) + { ++ if ((long)n < 0) ++ return n; ++ + if (access_ok(VERIFY_WRITE, to, n)) + n = __copy_to_user(to, from, n); + return n; +diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c +index b57c75e..ed2d6b2 100644 +--- a/arch/arm/kernel/armksyms.c ++++ b/arch/arm/kernel/armksyms.c +@@ -94,8 +94,8 @@ EXPORT_SYMBOL(__strncpy_from_user); + #ifdef CONFIG_MMU + EXPORT_SYMBOL(copy_page); + +-EXPORT_SYMBOL(__copy_from_user); +-EXPORT_SYMBOL(__copy_to_user); ++EXPORT_SYMBOL(___copy_from_user); ++EXPORT_SYMBOL(___copy_to_user); + EXPORT_SYMBOL(__clear_user); + + EXPORT_SYMBOL(__get_user_1); +diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c +index 2b7b017..c380fa2 100644 +--- a/arch/arm/kernel/process.c ++++ b/arch/arm/kernel/process.c +@@ -28,7 +28,6 @@ + #include <linux/tick.h> + #include <linux/utsname.h> + #include <linux/uaccess.h> +-#include <linux/random.h> + #include <linux/hw_breakpoint.h> + #include <linux/cpuidle.h> + +@@ -275,9 +274,10 @@ void machine_power_off(void) + machine_shutdown(); + if (pm_power_off) + pm_power_off(); ++ BUG(); + } + +-void machine_restart(char *cmd) ++__noreturn void machine_restart(char *cmd) + { + machine_shutdown(); + +@@ -519,12 +519,6 @@ unsigned long get_wchan(struct task_struct *p) + return 0; + } + +-unsigned long arch_randomize_brk(struct mm_struct *mm) +-{ +- unsigned long range_end = mm->brk + 0x02000000; +- return randomize_range(mm->brk, range_end, 0) ? : mm->brk; +-} +- + #ifdef CONFIG_MMU + /* + * The vectors page is always readable from user space for the +diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c +index 9650c14..ae30cdd 100644 +--- a/arch/arm/kernel/ptrace.c ++++ b/arch/arm/kernel/ptrace.c +@@ -906,10 +906,19 @@ long arch_ptrace(struct task_struct *child, long request, + return ret; + } + ++#ifdef CONFIG_GRKERNSEC_SETXID ++extern void gr_delayed_cred_worker(void); ++#endif ++ + asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno) + { + unsigned long ip; + ++#ifdef CONFIG_GRKERNSEC_SETXID ++ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID))) ++ gr_delayed_cred_worker(); ++#endif ++ + if (why) + audit_syscall_exit(regs); + else +diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c +index ebfac78..cbea9c0 100644 +--- a/arch/arm/kernel/setup.c ++++ b/arch/arm/kernel/setup.c +@@ -111,13 +111,13 @@ struct processor processor __read_mostly; + struct cpu_tlb_fns cpu_tlb __read_mostly; + #endif + #ifdef MULTI_USER +-struct cpu_user_fns cpu_user __read_mostly; ++struct cpu_user_fns cpu_user __read_only; + #endif + #ifdef MULTI_CACHE +-struct cpu_cache_fns cpu_cache __read_mostly; ++struct cpu_cache_fns cpu_cache __read_only; + #endif + #ifdef CONFIG_OUTER_CACHE +-struct outer_cache_fns outer_cache __read_mostly; ++struct outer_cache_fns outer_cache __read_only; + EXPORT_SYMBOL(outer_cache); + #endif + +diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c +index 63d402f..db1d714 100644 +--- a/arch/arm/kernel/traps.c ++++ b/arch/arm/kernel/traps.c +@@ -264,6 +264,8 @@ static int __die(const char *str, int err, struct thread_info *thread, struct pt + + static DEFINE_RAW_SPINLOCK(die_lock); + ++extern void gr_handle_kernel_exploit(void); ++ + /* + * This function is protected against re-entrancy. + */ +@@ -296,6 +298,9 @@ void die(const char *str, struct pt_regs *regs, int err) + panic("Fatal exception in interrupt"); + if (panic_on_oops) + panic("Fatal exception"); ++ ++ gr_handle_kernel_exploit(); ++ + if (ret != NOTIFY_STOP) + do_exit(SIGSEGV); + } +diff --git a/arch/arm/lib/copy_from_user.S b/arch/arm/lib/copy_from_user.S +index 66a477a..bee61d3 100644 +--- a/arch/arm/lib/copy_from_user.S ++++ b/arch/arm/lib/copy_from_user.S +@@ -16,7 +16,7 @@ + /* + * Prototype: + * +- * size_t __copy_from_user(void *to, const void *from, size_t n) ++ * size_t ___copy_from_user(void *to, const void *from, size_t n) + * + * Purpose: + * +@@ -84,11 +84,11 @@ + + .text + +-ENTRY(__copy_from_user) ++ENTRY(___copy_from_user) + + #include "copy_template.S" + +-ENDPROC(__copy_from_user) ++ENDPROC(___copy_from_user) + + .pushsection .fixup,"ax" + .align 0 +diff --git a/arch/arm/lib/copy_page.S b/arch/arm/lib/copy_page.S +index 6ee2f67..d1cce76 100644 +--- a/arch/arm/lib/copy_page.S ++++ b/arch/arm/lib/copy_page.S +@@ -10,6 +10,7 @@ + * ASM optimised string functions + */ + #include <linux/linkage.h> ++#include <linux/const.h> + #include <asm/assembler.h> + #include <asm/asm-offsets.h> + #include <asm/cache.h> +diff --git a/arch/arm/lib/copy_to_user.S b/arch/arm/lib/copy_to_user.S +index d066df6..df28194 100644 +--- a/arch/arm/lib/copy_to_user.S ++++ b/arch/arm/lib/copy_to_user.S +@@ -16,7 +16,7 @@ + /* + * Prototype: + * +- * size_t __copy_to_user(void *to, const void *from, size_t n) ++ * size_t ___copy_to_user(void *to, const void *from, size_t n) + * + * Purpose: + * +@@ -88,11 +88,11 @@ + .text + + ENTRY(__copy_to_user_std) +-WEAK(__copy_to_user) ++WEAK(___copy_to_user) + + #include "copy_template.S" + +-ENDPROC(__copy_to_user) ++ENDPROC(___copy_to_user) + ENDPROC(__copy_to_user_std) + + .pushsection .fixup,"ax" +diff --git a/arch/arm/lib/uaccess.S b/arch/arm/lib/uaccess.S +index 5c908b1..e712687 100644 +--- a/arch/arm/lib/uaccess.S ++++ b/arch/arm/lib/uaccess.S +@@ -20,7 +20,7 @@ + + #define PAGE_SHIFT 12 + +-/* Prototype: int __copy_to_user(void *to, const char *from, size_t n) ++/* Prototype: int ___copy_to_user(void *to, const char *from, size_t n) + * Purpose : copy a block to user memory from kernel memory + * Params : to - user memory + * : from - kernel memory +@@ -40,7 +40,7 @@ USER( TUSER( strgtb) r3, [r0], #1) @ May fault + sub r2, r2, ip + b .Lc2u_dest_aligned + +-ENTRY(__copy_to_user) ++ENTRY(___copy_to_user) + stmfd sp!, {r2, r4 - r7, lr} + cmp r2, #4 + blt .Lc2u_not_enough +@@ -278,14 +278,14 @@ USER( TUSER( strgeb) r3, [r0], #1) @ May fault + ldrgtb r3, [r1], #0 + USER( TUSER( strgtb) r3, [r0], #1) @ May fault + b .Lc2u_finished +-ENDPROC(__copy_to_user) ++ENDPROC(___copy_to_user) + + .pushsection .fixup,"ax" + .align 0 + 9001: ldmfd sp!, {r0, r4 - r7, pc} + .popsection + +-/* Prototype: unsigned long __copy_from_user(void *to,const void *from,unsigned long n); ++/* Prototype: unsigned long ___copy_from_user(void *to,const void *from,unsigned long n); + * Purpose : copy a block from user memory to kernel memory + * Params : to - kernel memory + * : from - user memory +@@ -304,7 +304,7 @@ USER( TUSER( ldrgtb) r3, [r1], #1) @ May fault + sub r2, r2, ip + b .Lcfu_dest_aligned + +-ENTRY(__copy_from_user) ++ENTRY(___copy_from_user) + stmfd sp!, {r0, r2, r4 - r7, lr} + cmp r2, #4 + blt .Lcfu_not_enough +@@ -544,7 +544,7 @@ USER( TUSER( ldrgeb) r3, [r1], #1) @ May fault + USER( TUSER( ldrgtb) r3, [r1], #1) @ May fault + strgtb r3, [r0], #1 + b .Lcfu_finished +-ENDPROC(__copy_from_user) ++ENDPROC(___copy_from_user) + + .pushsection .fixup,"ax" + .align 0 +diff --git a/arch/arm/lib/uaccess_with_memcpy.c b/arch/arm/lib/uaccess_with_memcpy.c +index 025f742..8432b08 100644 +--- a/arch/arm/lib/uaccess_with_memcpy.c ++++ b/arch/arm/lib/uaccess_with_memcpy.c +@@ -104,7 +104,7 @@ out: + } + + unsigned long +-__copy_to_user(void __user *to, const void *from, unsigned long n) ++___copy_to_user(void __user *to, const void *from, unsigned long n) + { + /* + * This test is stubbed out of the main function above to keep +diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c +index 518091c..eae9a76 100644 +--- a/arch/arm/mach-omap2/board-n8x0.c ++++ b/arch/arm/mach-omap2/board-n8x0.c +@@ -596,7 +596,7 @@ static int n8x0_menelaus_late_init(struct device *dev) + } + #endif + +-static struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = { ++static struct menelaus_platform_data n8x0_menelaus_platform_data __initconst = { + .late_init = n8x0_menelaus_late_init, + }; + +diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c +index 5bb4835..4760f68 100644 +--- a/arch/arm/mm/fault.c ++++ b/arch/arm/mm/fault.c +@@ -174,6 +174,13 @@ __do_user_fault(struct task_struct *tsk, unsigned long addr, + } + #endif + ++#ifdef CONFIG_PAX_PAGEEXEC ++ if (fsr & FSR_LNX_PF) { ++ pax_report_fault(regs, (void *)regs->ARM_pc, (void *)regs->ARM_sp); ++ do_group_exit(SIGKILL); ++ } ++#endif ++ + tsk->thread.address = addr; + tsk->thread.error_code = fsr; + tsk->thread.trap_no = 14; +@@ -397,6 +404,33 @@ do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs) + } + #endif /* CONFIG_MMU */ + ++#ifdef CONFIG_PAX_PAGEEXEC ++void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) ++{ ++ long i; ++ ++ printk(KERN_ERR "PAX: bytes at PC: "); ++ for (i = 0; i < 20; i++) { ++ unsigned char c; ++ if (get_user(c, (__force unsigned char __user *)pc+i)) ++ printk(KERN_CONT "?? "); ++ else ++ printk(KERN_CONT "%02x ", c); ++ } ++ printk("\n"); ++ ++ printk(KERN_ERR "PAX: bytes at SP-4: "); ++ for (i = -1; i < 20; i++) { ++ unsigned long c; ++ if (get_user(c, (__force unsigned long __user *)sp+i)) ++ printk(KERN_CONT "???????? "); ++ else ++ printk(KERN_CONT "%08lx ", c); ++ } ++ printk("\n"); ++} ++#endif ++ + /* + * First Level Translation Fault Handler + * +@@ -577,6 +611,20 @@ do_PrefetchAbort(unsigned long addr, unsigned int ifsr, struct pt_regs *regs) + const struct fsr_info *inf = ifsr_info + fsr_fs(ifsr); + struct siginfo info; + ++#ifdef CONFIG_PAX_REFCOUNT ++ if (fsr_fs(ifsr) == 2) { ++ unsigned int bkpt; ++ ++ if (!probe_kernel_address((unsigned int *)addr, bkpt) && bkpt == 0xe12f1073) { ++ current->thread.error_code = ifsr; ++ current->thread.trap_no = 0; ++ pax_report_refcount_overflow(regs); ++ fixup_exception(regs); ++ return; ++ } ++ } ++#endif ++ + if (!inf->fn(addr, ifsr | FSR_LNX_PF, regs)) + return; + +diff --git a/arch/arm/mm/mmap.c b/arch/arm/mm/mmap.c +index ce8cb19..3ec539d 100644 +--- a/arch/arm/mm/mmap.c ++++ b/arch/arm/mm/mmap.c +@@ -93,6 +93,10 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, + if (len > TASK_SIZE) + return -ENOMEM; + ++#ifdef CONFIG_PAX_RANDMMAP ++ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) ++#endif ++ + if (addr) { + if (do_align) + addr = COLOUR_ALIGN(addr, pgoff); +@@ -100,15 +104,14 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, + addr = PAGE_ALIGN(addr); + + vma = find_vma(mm, addr); +- if (TASK_SIZE - len >= addr && +- (!vma || addr + len <= vma->vm_start)) ++ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) + return addr; + } + if (len > mm->cached_hole_size) { +- start_addr = addr = mm->free_area_cache; ++ start_addr = addr = mm->free_area_cache; + } else { +- start_addr = addr = mm->mmap_base; +- mm->cached_hole_size = 0; ++ start_addr = addr = mm->mmap_base; ++ mm->cached_hole_size = 0; + } + + full_search: +@@ -124,14 +127,14 @@ full_search: + * Start a new search - just in case we missed + * some holes. + */ +- if (start_addr != TASK_UNMAPPED_BASE) { +- start_addr = addr = TASK_UNMAPPED_BASE; ++ if (start_addr != mm->mmap_base) { ++ start_addr = addr = mm->mmap_base; + mm->cached_hole_size = 0; + goto full_search; + } + return -ENOMEM; + } +- if (!vma || addr + len <= vma->vm_start) { ++ if (check_heap_stack_gap(vma, addr, len)) { + /* + * Remember the place where we stopped the search: + */ +@@ -266,10 +269,22 @@ void arch_pick_mmap_layout(struct mm_struct *mm) + + if (mmap_is_legacy()) { + mm->mmap_base = TASK_UNMAPPED_BASE + random_factor; ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base += mm->delta_mmap; ++#endif ++ + mm->get_unmapped_area = arch_get_unmapped_area; + mm->unmap_area = arch_unmap_area; + } else { + mm->mmap_base = mmap_base(random_factor); ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base -= mm->delta_mmap + mm->delta_stack; ++#endif ++ + mm->get_unmapped_area = arch_get_unmapped_area_topdown; + mm->unmap_area = arch_unmap_area_topdown; + } +diff --git a/arch/arm/plat-orion/include/plat/addr-map.h b/arch/arm/plat-orion/include/plat/addr-map.h +index fd556f7..af2e7d2 100644 +--- a/arch/arm/plat-orion/include/plat/addr-map.h ++++ b/arch/arm/plat-orion/include/plat/addr-map.h +@@ -26,7 +26,7 @@ struct orion_addr_map_cfg { + value in bridge_virt_base */ + void __iomem *(*win_cfg_base) (const struct orion_addr_map_cfg *cfg, + const int win); +-}; ++} __no_const; + + /* + * Information needed to setup one address mapping. +diff --git a/arch/arm/plat-samsung/include/plat/dma-ops.h b/arch/arm/plat-samsung/include/plat/dma-ops.h +index 71a6827..e7fbc23 100644 +--- a/arch/arm/plat-samsung/include/plat/dma-ops.h ++++ b/arch/arm/plat-samsung/include/plat/dma-ops.h +@@ -43,7 +43,7 @@ struct samsung_dma_ops { + int (*started)(unsigned ch); + int (*flush)(unsigned ch); + int (*stop)(unsigned ch); +-}; ++} __no_const; + + extern void *samsung_dmadev_get_ops(void); + extern void *s3c_dma_get_ops(void); +diff --git a/arch/arm/plat-samsung/include/plat/ehci.h b/arch/arm/plat-samsung/include/plat/ehci.h +index 5f28cae..3d23723 100644 +--- a/arch/arm/plat-samsung/include/plat/ehci.h ++++ b/arch/arm/plat-samsung/include/plat/ehci.h +@@ -14,7 +14,7 @@ + struct s5p_ehci_platdata { + int (*phy_init)(struct platform_device *pdev, int type); + int (*phy_exit)(struct platform_device *pdev, int type); +-}; ++} __no_const; + + extern void s5p_ehci_set_platdata(struct s5p_ehci_platdata *pd); + +diff --git a/arch/avr32/include/asm/cache.h b/arch/avr32/include/asm/cache.h +index c3a58a1..78fbf54 100644 +--- a/arch/avr32/include/asm/cache.h ++++ b/arch/avr32/include/asm/cache.h +@@ -1,8 +1,10 @@ + #ifndef __ASM_AVR32_CACHE_H + #define __ASM_AVR32_CACHE_H + ++#include <linux/const.h> ++ + #define L1_CACHE_SHIFT 5 +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + /* + * Memory returned by kmalloc() may be used for DMA, so we must make +diff --git a/arch/avr32/include/asm/elf.h b/arch/avr32/include/asm/elf.h +index 3b3159b..425ea94 100644 +--- a/arch/avr32/include/asm/elf.h ++++ b/arch/avr32/include/asm/elf.h +@@ -84,8 +84,14 @@ typedef struct user_fpu_struct elf_fpregset_t; + the loader. We need to make sure that it is out of the way of the program + that it will "exec", and that there is sufficient room for the brk. */ + +-#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) ++#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) + ++#ifdef CONFIG_PAX_ASLR ++#define PAX_ELF_ET_DYN_BASE 0x00001000UL ++ ++#define PAX_DELTA_MMAP_LEN 15 ++#define PAX_DELTA_STACK_LEN 15 ++#endif + + /* This yields a mask that user programs can use to figure out what + instruction set this CPU supports. This could be done in user space, +diff --git a/arch/avr32/include/asm/kmap_types.h b/arch/avr32/include/asm/kmap_types.h +index b7f5c68..556135c 100644 +--- a/arch/avr32/include/asm/kmap_types.h ++++ b/arch/avr32/include/asm/kmap_types.h +@@ -22,7 +22,8 @@ D(10) KM_IRQ0, + D(11) KM_IRQ1, + D(12) KM_SOFTIRQ0, + D(13) KM_SOFTIRQ1, +-D(14) KM_TYPE_NR ++D(14) KM_CLEARPAGE, ++D(15) KM_TYPE_NR + }; + + #undef D +diff --git a/arch/avr32/mm/fault.c b/arch/avr32/mm/fault.c +index f7040a1..db9f300 100644 +--- a/arch/avr32/mm/fault.c ++++ b/arch/avr32/mm/fault.c +@@ -41,6 +41,23 @@ static inline int notify_page_fault(struct pt_regs *regs, int trap) + + int exception_trace = 1; + ++#ifdef CONFIG_PAX_PAGEEXEC ++void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) ++{ ++ unsigned long i; ++ ++ printk(KERN_ERR "PAX: bytes at PC: "); ++ for (i = 0; i < 20; i++) { ++ unsigned char c; ++ if (get_user(c, (unsigned char *)pc+i)) ++ printk(KERN_CONT "???????? "); ++ else ++ printk(KERN_CONT "%02x ", c); ++ } ++ printk("\n"); ++} ++#endif ++ + /* + * This routine handles page faults. It determines the address and the + * problem, and then passes it off to one of the appropriate routines. +@@ -156,6 +173,16 @@ bad_area: + up_read(&mm->mmap_sem); + + if (user_mode(regs)) { ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ if (mm->pax_flags & MF_PAX_PAGEEXEC) { ++ if (ecr == ECR_PROTECTION_X || ecr == ECR_TLB_MISS_X) { ++ pax_report_fault(regs, (void *)regs->pc, (void *)regs->sp); ++ do_group_exit(SIGKILL); ++ } ++ } ++#endif ++ + if (exception_trace && printk_ratelimit()) + printk("%s%s[%d]: segfault at %08lx pc %08lx " + "sp %08lx ecr %lu\n", +diff --git a/arch/blackfin/include/asm/cache.h b/arch/blackfin/include/asm/cache.h +index 568885a..f8008df 100644 +--- a/arch/blackfin/include/asm/cache.h ++++ b/arch/blackfin/include/asm/cache.h +@@ -7,6 +7,7 @@ + #ifndef __ARCH_BLACKFIN_CACHE_H + #define __ARCH_BLACKFIN_CACHE_H + ++#include <linux/const.h> + #include <linux/linkage.h> /* for asmlinkage */ + + /* +@@ -14,7 +15,7 @@ + * Blackfin loads 32 bytes for cache + */ + #define L1_CACHE_SHIFT 5 +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + #define SMP_CACHE_BYTES L1_CACHE_BYTES + + #define ARCH_DMA_MINALIGN L1_CACHE_BYTES +diff --git a/arch/cris/include/arch-v10/arch/cache.h b/arch/cris/include/arch-v10/arch/cache.h +index aea2718..3639a60 100644 +--- a/arch/cris/include/arch-v10/arch/cache.h ++++ b/arch/cris/include/arch-v10/arch/cache.h +@@ -1,8 +1,9 @@ + #ifndef _ASM_ARCH_CACHE_H + #define _ASM_ARCH_CACHE_H + ++#include <linux/const.h> + /* Etrax 100LX have 32-byte cache-lines. */ +-#define L1_CACHE_BYTES 32 + #define L1_CACHE_SHIFT 5 ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + #endif /* _ASM_ARCH_CACHE_H */ +diff --git a/arch/cris/include/arch-v32/arch/cache.h b/arch/cris/include/arch-v32/arch/cache.h +index 1de779f..336fad3 100644 +--- a/arch/cris/include/arch-v32/arch/cache.h ++++ b/arch/cris/include/arch-v32/arch/cache.h +@@ -1,11 +1,12 @@ + #ifndef _ASM_CRIS_ARCH_CACHE_H + #define _ASM_CRIS_ARCH_CACHE_H + ++#include <linux/const.h> + #include <arch/hwregs/dma.h> + + /* A cache-line is 32 bytes. */ +-#define L1_CACHE_BYTES 32 + #define L1_CACHE_SHIFT 5 ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + #define __read_mostly __attribute__((__section__(".data.read_mostly"))) + +diff --git a/arch/frv/include/asm/atomic.h b/arch/frv/include/asm/atomic.h +index b86329d..6709906 100644 +--- a/arch/frv/include/asm/atomic.h ++++ b/arch/frv/include/asm/atomic.h +@@ -186,6 +186,16 @@ static inline void atomic64_dec(atomic64_t *v) + #define atomic64_cmpxchg(v, old, new) (__cmpxchg_64(old, new, &(v)->counter)) + #define atomic64_xchg(v, new) (__xchg_64(new, &(v)->counter)) + ++#define atomic64_read_unchecked(v) atomic64_read(v) ++#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) ++#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) ++#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) ++#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) ++#define atomic64_inc_unchecked(v) atomic64_inc(v) ++#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) ++#define atomic64_dec_unchecked(v) atomic64_dec(v) ++#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) ++ + static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u) + { + int c, old; +diff --git a/arch/frv/include/asm/cache.h b/arch/frv/include/asm/cache.h +index 2797163..c2a401d 100644 +--- a/arch/frv/include/asm/cache.h ++++ b/arch/frv/include/asm/cache.h +@@ -12,10 +12,11 @@ + #ifndef __ASM_CACHE_H + #define __ASM_CACHE_H + ++#include <linux/const.h> + + /* bytes per L1 cache line */ + #define L1_CACHE_SHIFT (CONFIG_FRV_L1_CACHE_SHIFT) +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + #define __cacheline_aligned __attribute__((aligned(L1_CACHE_BYTES))) + #define ____cacheline_aligned __attribute__((aligned(L1_CACHE_BYTES))) +diff --git a/arch/frv/include/asm/kmap_types.h b/arch/frv/include/asm/kmap_types.h +index f8e16b2..c73ff79 100644 +--- a/arch/frv/include/asm/kmap_types.h ++++ b/arch/frv/include/asm/kmap_types.h +@@ -23,6 +23,7 @@ enum km_type { + KM_IRQ1, + KM_SOFTIRQ0, + KM_SOFTIRQ1, ++ KM_CLEARPAGE, + KM_TYPE_NR + }; + +diff --git a/arch/frv/mm/elf-fdpic.c b/arch/frv/mm/elf-fdpic.c +index 385fd30..6c3d97e 100644 +--- a/arch/frv/mm/elf-fdpic.c ++++ b/arch/frv/mm/elf-fdpic.c +@@ -73,8 +73,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi + if (addr) { + addr = PAGE_ALIGN(addr); + vma = find_vma(current->mm, addr); +- if (TASK_SIZE - len >= addr && +- (!vma || addr + len <= vma->vm_start)) ++ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) + goto success; + } + +@@ -89,7 +88,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi + for (; vma; vma = vma->vm_next) { + if (addr > limit) + break; +- if (addr + len <= vma->vm_start) ++ if (check_heap_stack_gap(vma, addr, len)) + goto success; + addr = vma->vm_end; + } +@@ -104,7 +103,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi + for (; vma; vma = vma->vm_next) { + if (addr > limit) + break; +- if (addr + len <= vma->vm_start) ++ if (check_heap_stack_gap(vma, addr, len)) + goto success; + addr = vma->vm_end; + } +diff --git a/arch/h8300/include/asm/cache.h b/arch/h8300/include/asm/cache.h +index c635028..6d9445a 100644 +--- a/arch/h8300/include/asm/cache.h ++++ b/arch/h8300/include/asm/cache.h +@@ -1,8 +1,10 @@ + #ifndef __ARCH_H8300_CACHE_H + #define __ARCH_H8300_CACHE_H + ++#include <linux/const.h> ++ + /* bytes per L1 cache line */ +-#define L1_CACHE_BYTES 4 ++#define L1_CACHE_BYTES _AC(4,UL) + + /* m68k-elf-gcc 2.95.2 doesn't like these */ + +diff --git a/arch/hexagon/include/asm/cache.h b/arch/hexagon/include/asm/cache.h +index 0f01de2..d37d309 100644 +--- a/arch/hexagon/include/asm/cache.h ++++ b/arch/hexagon/include/asm/cache.h +@@ -21,9 +21,11 @@ + #ifndef __ASM_CACHE_H + #define __ASM_CACHE_H + ++#include <linux/const.h> ++ + /* Bytes per L1 cache line */ +-#define L1_CACHE_SHIFT (5) +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#define L1_CACHE_SHIFT 5 ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + #define __cacheline_aligned __aligned(L1_CACHE_BYTES) + #define ____cacheline_aligned __aligned(L1_CACHE_BYTES) +diff --git a/arch/ia64/include/asm/atomic.h b/arch/ia64/include/asm/atomic.h +index 7d91166..88ab87e 100644 +--- a/arch/ia64/include/asm/atomic.h ++++ b/arch/ia64/include/asm/atomic.h +@@ -208,6 +208,16 @@ atomic64_add_negative (__s64 i, atomic64_t *v) + #define atomic64_inc(v) atomic64_add(1, (v)) + #define atomic64_dec(v) atomic64_sub(1, (v)) + ++#define atomic64_read_unchecked(v) atomic64_read(v) ++#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) ++#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) ++#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) ++#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) ++#define atomic64_inc_unchecked(v) atomic64_inc(v) ++#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) ++#define atomic64_dec_unchecked(v) atomic64_dec(v) ++#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) ++ + /* Atomic operations are already serializing */ + #define smp_mb__before_atomic_dec() barrier() + #define smp_mb__after_atomic_dec() barrier() +diff --git a/arch/ia64/include/asm/cache.h b/arch/ia64/include/asm/cache.h +index 988254a..e1ee885 100644 +--- a/arch/ia64/include/asm/cache.h ++++ b/arch/ia64/include/asm/cache.h +@@ -1,6 +1,7 @@ + #ifndef _ASM_IA64_CACHE_H + #define _ASM_IA64_CACHE_H + ++#include <linux/const.h> + + /* + * Copyright (C) 1998-2000 Hewlett-Packard Co +@@ -9,7 +10,7 @@ + + /* Bytes per L1 (data) cache line. */ + #define L1_CACHE_SHIFT CONFIG_IA64_L1_CACHE_SHIFT +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + #ifdef CONFIG_SMP + # define SMP_CACHE_SHIFT L1_CACHE_SHIFT +diff --git a/arch/ia64/include/asm/elf.h b/arch/ia64/include/asm/elf.h +index b5298eb..67c6e62 100644 +--- a/arch/ia64/include/asm/elf.h ++++ b/arch/ia64/include/asm/elf.h +@@ -42,6 +42,13 @@ + */ + #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x800000000UL) + ++#ifdef CONFIG_PAX_ASLR ++#define PAX_ELF_ET_DYN_BASE (current->personality == PER_LINUX32 ? 0x08048000UL : 0x4000000000000000UL) ++ ++#define PAX_DELTA_MMAP_LEN (current->personality == PER_LINUX32 ? 16 : 3*PAGE_SHIFT - 13) ++#define PAX_DELTA_STACK_LEN (current->personality == PER_LINUX32 ? 16 : 3*PAGE_SHIFT - 13) ++#endif ++ + #define PT_IA_64_UNWIND 0x70000001 + + /* IA-64 relocations: */ +diff --git a/arch/ia64/include/asm/pgalloc.h b/arch/ia64/include/asm/pgalloc.h +index 96a8d92..617a1cf 100644 +--- a/arch/ia64/include/asm/pgalloc.h ++++ b/arch/ia64/include/asm/pgalloc.h +@@ -39,6 +39,12 @@ pgd_populate(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud) + pgd_val(*pgd_entry) = __pa(pud); + } + ++static inline void ++pgd_populate_kernel(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud) ++{ ++ pgd_populate(mm, pgd_entry, pud); ++} ++ + static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) + { + return quicklist_alloc(0, GFP_KERNEL, NULL); +@@ -57,6 +63,12 @@ pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd) + pud_val(*pud_entry) = __pa(pmd); + } + ++static inline void ++pud_populate_kernel(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd) ++{ ++ pud_populate(mm, pud_entry, pmd); ++} ++ + static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) + { + return quicklist_alloc(0, GFP_KERNEL, NULL); +diff --git a/arch/ia64/include/asm/pgtable.h b/arch/ia64/include/asm/pgtable.h +index 815810c..d60bd4c 100644 +--- a/arch/ia64/include/asm/pgtable.h ++++ b/arch/ia64/include/asm/pgtable.h +@@ -12,7 +12,7 @@ + * David Mosberger-Tang <davidm@hpl.hp.com> + */ + +- ++#include <linux/const.h> + #include <asm/mman.h> + #include <asm/page.h> + #include <asm/processor.h> +@@ -142,6 +142,17 @@ + #define PAGE_READONLY __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R) + #define PAGE_COPY __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R) + #define PAGE_COPY_EXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RX) ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++# define PAGE_SHARED_NOEXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RW) ++# define PAGE_READONLY_NOEXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R) ++# define PAGE_COPY_NOEXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R) ++#else ++# define PAGE_SHARED_NOEXEC PAGE_SHARED ++# define PAGE_READONLY_NOEXEC PAGE_READONLY ++# define PAGE_COPY_NOEXEC PAGE_COPY ++#endif ++ + #define PAGE_GATE __pgprot(__ACCESS_BITS | _PAGE_PL_0 | _PAGE_AR_X_RX) + #define PAGE_KERNEL __pgprot(__DIRTY_BITS | _PAGE_PL_0 | _PAGE_AR_RWX) + #define PAGE_KERNELRX __pgprot(__ACCESS_BITS | _PAGE_PL_0 | _PAGE_AR_RX) +diff --git a/arch/ia64/include/asm/spinlock.h b/arch/ia64/include/asm/spinlock.h +index 54ff557..70c88b7 100644 +--- a/arch/ia64/include/asm/spinlock.h ++++ b/arch/ia64/include/asm/spinlock.h +@@ -71,7 +71,7 @@ static __always_inline void __ticket_spin_unlock(arch_spinlock_t *lock) + unsigned short *p = (unsigned short *)&lock->lock + 1, tmp; + + asm volatile ("ld2.bias %0=[%1]" : "=r"(tmp) : "r"(p)); +- ACCESS_ONCE(*p) = (tmp + 2) & ~1; ++ ACCESS_ONCE_RW(*p) = (tmp + 2) & ~1; + } + + static __always_inline void __ticket_spin_unlock_wait(arch_spinlock_t *lock) +diff --git a/arch/ia64/include/asm/uaccess.h b/arch/ia64/include/asm/uaccess.h +index 449c8c0..432a3d2 100644 +--- a/arch/ia64/include/asm/uaccess.h ++++ b/arch/ia64/include/asm/uaccess.h +@@ -257,7 +257,7 @@ __copy_from_user (void *to, const void __user *from, unsigned long count) + const void *__cu_from = (from); \ + long __cu_len = (n); \ + \ +- if (__access_ok(__cu_to, __cu_len, get_fs())) \ ++ if (__cu_len > 0 && __cu_len <= INT_MAX && __access_ok(__cu_to, __cu_len, get_fs())) \ + __cu_len = __copy_user(__cu_to, (__force void __user *) __cu_from, __cu_len); \ + __cu_len; \ + }) +@@ -269,7 +269,7 @@ __copy_from_user (void *to, const void __user *from, unsigned long count) + long __cu_len = (n); \ + \ + __chk_user_ptr(__cu_from); \ +- if (__access_ok(__cu_from, __cu_len, get_fs())) \ ++ if (__cu_len > 0 && __cu_len <= INT_MAX && __access_ok(__cu_from, __cu_len, get_fs())) \ + __cu_len = __copy_user((__force void __user *) __cu_to, __cu_from, __cu_len); \ + __cu_len; \ + }) +diff --git a/arch/ia64/kernel/module.c b/arch/ia64/kernel/module.c +index 24603be..948052d 100644 +--- a/arch/ia64/kernel/module.c ++++ b/arch/ia64/kernel/module.c +@@ -307,8 +307,7 @@ plt_target (struct plt_entry *plt) + void + module_free (struct module *mod, void *module_region) + { +- if (mod && mod->arch.init_unw_table && +- module_region == mod->module_init) { ++ if (mod && mod->arch.init_unw_table && module_region == mod->module_init_rx) { + unw_remove_unwind_table(mod->arch.init_unw_table); + mod->arch.init_unw_table = NULL; + } +@@ -494,15 +493,39 @@ module_frob_arch_sections (Elf_Ehdr *ehdr, Elf_Shdr *sechdrs, char *secstrings, + } + + static inline int ++in_init_rx (const struct module *mod, uint64_t addr) ++{ ++ return addr - (uint64_t) mod->module_init_rx < mod->init_size_rx; ++} ++ ++static inline int ++in_init_rw (const struct module *mod, uint64_t addr) ++{ ++ return addr - (uint64_t) mod->module_init_rw < mod->init_size_rw; ++} ++ ++static inline int + in_init (const struct module *mod, uint64_t addr) + { +- return addr - (uint64_t) mod->module_init < mod->init_size; ++ return in_init_rx(mod, addr) || in_init_rw(mod, addr); ++} ++ ++static inline int ++in_core_rx (const struct module *mod, uint64_t addr) ++{ ++ return addr - (uint64_t) mod->module_core_rx < mod->core_size_rx; ++} ++ ++static inline int ++in_core_rw (const struct module *mod, uint64_t addr) ++{ ++ return addr - (uint64_t) mod->module_core_rw < mod->core_size_rw; + } + + static inline int + in_core (const struct module *mod, uint64_t addr) + { +- return addr - (uint64_t) mod->module_core < mod->core_size; ++ return in_core_rx(mod, addr) || in_core_rw(mod, addr); + } + + static inline int +@@ -685,7 +708,14 @@ do_reloc (struct module *mod, uint8_t r_type, Elf64_Sym *sym, uint64_t addend, + break; + + case RV_BDREL: +- val -= (uint64_t) (in_init(mod, val) ? mod->module_init : mod->module_core); ++ if (in_init_rx(mod, val)) ++ val -= (uint64_t) mod->module_init_rx; ++ else if (in_init_rw(mod, val)) ++ val -= (uint64_t) mod->module_init_rw; ++ else if (in_core_rx(mod, val)) ++ val -= (uint64_t) mod->module_core_rx; ++ else if (in_core_rw(mod, val)) ++ val -= (uint64_t) mod->module_core_rw; + break; + + case RV_LTV: +@@ -820,15 +850,15 @@ apply_relocate_add (Elf64_Shdr *sechdrs, const char *strtab, unsigned int symind + * addresses have been selected... + */ + uint64_t gp; +- if (mod->core_size > MAX_LTOFF) ++ if (mod->core_size_rx + mod->core_size_rw > MAX_LTOFF) + /* + * This takes advantage of fact that SHF_ARCH_SMALL gets allocated + * at the end of the module. + */ +- gp = mod->core_size - MAX_LTOFF / 2; ++ gp = mod->core_size_rx + mod->core_size_rw - MAX_LTOFF / 2; + else +- gp = mod->core_size / 2; +- gp = (uint64_t) mod->module_core + ((gp + 7) & -8); ++ gp = (mod->core_size_rx + mod->core_size_rw) / 2; ++ gp = (uint64_t) mod->module_core_rx + ((gp + 7) & -8); + mod->arch.gp = gp; + DEBUGP("%s: placing gp at 0x%lx\n", __func__, gp); + } +diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c +index 609d500..7dde2a8 100644 +--- a/arch/ia64/kernel/sys_ia64.c ++++ b/arch/ia64/kernel/sys_ia64.c +@@ -43,6 +43,13 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len + if (REGION_NUMBER(addr) == RGN_HPAGE) + addr = 0; + #endif ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ addr = mm->free_area_cache; ++ else ++#endif ++ + if (!addr) + addr = mm->free_area_cache; + +@@ -61,14 +68,14 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len + for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { + /* At this point: (!vma || addr < vma->vm_end). */ + if (TASK_SIZE - len < addr || RGN_MAP_LIMIT - len < REGION_OFFSET(addr)) { +- if (start_addr != TASK_UNMAPPED_BASE) { ++ if (start_addr != mm->mmap_base) { + /* Start a new search --- just in case we missed some holes. */ +- addr = TASK_UNMAPPED_BASE; ++ addr = mm->mmap_base; + goto full_search; + } + return -ENOMEM; + } +- if (!vma || addr + len <= vma->vm_start) { ++ if (check_heap_stack_gap(vma, addr, len)) { + /* Remember the address where we stopped this search: */ + mm->free_area_cache = addr + len; + return addr; +diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S +index 0ccb28f..8992469 100644 +--- a/arch/ia64/kernel/vmlinux.lds.S ++++ b/arch/ia64/kernel/vmlinux.lds.S +@@ -198,7 +198,7 @@ SECTIONS { + /* Per-cpu data: */ + . = ALIGN(PERCPU_PAGE_SIZE); + PERCPU_VADDR(SMP_CACHE_BYTES, PERCPU_ADDR, :percpu) +- __phys_per_cpu_start = __per_cpu_load; ++ __phys_per_cpu_start = per_cpu_load; + /* + * ensure percpu data fits + * into percpu page size +diff --git a/arch/ia64/mm/fault.c b/arch/ia64/mm/fault.c +index 02d29c2..ea893df 100644 +--- a/arch/ia64/mm/fault.c ++++ b/arch/ia64/mm/fault.c +@@ -72,6 +72,23 @@ mapped_kernel_page_is_present (unsigned long address) + return pte_present(pte); + } + ++#ifdef CONFIG_PAX_PAGEEXEC ++void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) ++{ ++ unsigned long i; ++ ++ printk(KERN_ERR "PAX: bytes at PC: "); ++ for (i = 0; i < 8; i++) { ++ unsigned int c; ++ if (get_user(c, (unsigned int *)pc+i)) ++ printk(KERN_CONT "???????? "); ++ else ++ printk(KERN_CONT "%08x ", c); ++ } ++ printk("\n"); ++} ++#endif ++ + void __kprobes + ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *regs) + { +@@ -145,9 +162,23 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re + mask = ( (((isr >> IA64_ISR_X_BIT) & 1UL) << VM_EXEC_BIT) + | (((isr >> IA64_ISR_W_BIT) & 1UL) << VM_WRITE_BIT)); + +- if ((vma->vm_flags & mask) != mask) ++ if ((vma->vm_flags & mask) != mask) { ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ if (!(vma->vm_flags & VM_EXEC) && (mask & VM_EXEC)) { ++ if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || address != regs->cr_iip) ++ goto bad_area; ++ ++ up_read(&mm->mmap_sem); ++ pax_report_fault(regs, (void *)regs->cr_iip, (void *)regs->r12); ++ do_group_exit(SIGKILL); ++ } ++#endif ++ + goto bad_area; + ++ } ++ + /* + * If for any reason at all we couldn't handle the fault, make + * sure we exit gracefully rather than endlessly redo the +diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c +index 5ca674b..e0e1b70 100644 +--- a/arch/ia64/mm/hugetlbpage.c ++++ b/arch/ia64/mm/hugetlbpage.c +@@ -171,7 +171,7 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, u + /* At this point: (!vmm || addr < vmm->vm_end). */ + if (REGION_OFFSET(addr) + len > RGN_MAP_LIMIT) + return -ENOMEM; +- if (!vmm || (addr + len) <= vmm->vm_start) ++ if (check_heap_stack_gap(vmm, addr, len)) + return addr; + addr = ALIGN(vmm->vm_end, HPAGE_SIZE); + } +diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c +index 0eab454..bd794f2 100644 +--- a/arch/ia64/mm/init.c ++++ b/arch/ia64/mm/init.c +@@ -120,6 +120,19 @@ ia64_init_addr_space (void) + vma->vm_start = current->thread.rbs_bot & PAGE_MASK; + vma->vm_end = vma->vm_start + PAGE_SIZE; + vma->vm_flags = VM_DATA_DEFAULT_FLAGS|VM_GROWSUP|VM_ACCOUNT; ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ if (current->mm->pax_flags & MF_PAX_PAGEEXEC) { ++ vma->vm_flags &= ~VM_EXEC; ++ ++#ifdef CONFIG_PAX_MPROTECT ++ if (current->mm->pax_flags & MF_PAX_MPROTECT) ++ vma->vm_flags &= ~VM_MAYEXEC; ++#endif ++ ++ } ++#endif ++ + vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); + down_write(¤t->mm->mmap_sem); + if (insert_vm_struct(current->mm, vma)) { +diff --git a/arch/m32r/include/asm/cache.h b/arch/m32r/include/asm/cache.h +index 40b3ee9..8c2c112 100644 +--- a/arch/m32r/include/asm/cache.h ++++ b/arch/m32r/include/asm/cache.h +@@ -1,8 +1,10 @@ + #ifndef _ASM_M32R_CACHE_H + #define _ASM_M32R_CACHE_H + ++#include <linux/const.h> ++ + /* L1 cache line size */ + #define L1_CACHE_SHIFT 4 +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + #endif /* _ASM_M32R_CACHE_H */ +diff --git a/arch/m32r/lib/usercopy.c b/arch/m32r/lib/usercopy.c +index 82abd15..d95ae5d 100644 +--- a/arch/m32r/lib/usercopy.c ++++ b/arch/m32r/lib/usercopy.c +@@ -14,6 +14,9 @@ + unsigned long + __generic_copy_to_user(void __user *to, const void *from, unsigned long n) + { ++ if ((long)n < 0) ++ return n; ++ + prefetch(from); + if (access_ok(VERIFY_WRITE, to, n)) + __copy_user(to,from,n); +@@ -23,6 +26,9 @@ __generic_copy_to_user(void __user *to, const void *from, unsigned long n) + unsigned long + __generic_copy_from_user(void *to, const void __user *from, unsigned long n) + { ++ if ((long)n < 0) ++ return n; ++ + prefetchw(to); + if (access_ok(VERIFY_READ, from, n)) + __copy_user_zeroing(to,from,n); +diff --git a/arch/m68k/include/asm/cache.h b/arch/m68k/include/asm/cache.h +index 0395c51..5f26031 100644 +--- a/arch/m68k/include/asm/cache.h ++++ b/arch/m68k/include/asm/cache.h +@@ -4,9 +4,11 @@ + #ifndef __ARCH_M68K_CACHE_H + #define __ARCH_M68K_CACHE_H + ++#include <linux/const.h> ++ + /* bytes per L1 cache line */ + #define L1_CACHE_SHIFT 4 +-#define L1_CACHE_BYTES (1<< L1_CACHE_SHIFT) ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + #define ARCH_DMA_MINALIGN L1_CACHE_BYTES + +diff --git a/arch/microblaze/include/asm/cache.h b/arch/microblaze/include/asm/cache.h +index 4efe96a..60e8699 100644 +--- a/arch/microblaze/include/asm/cache.h ++++ b/arch/microblaze/include/asm/cache.h +@@ -13,11 +13,12 @@ + #ifndef _ASM_MICROBLAZE_CACHE_H + #define _ASM_MICROBLAZE_CACHE_H + ++#include <linux/const.h> + #include <asm/registers.h> + + #define L1_CACHE_SHIFT 5 + /* word-granular cache in microblaze */ +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + #define SMP_CACHE_BYTES L1_CACHE_BYTES + +diff --git a/arch/mips/include/asm/atomic.h b/arch/mips/include/asm/atomic.h +index 3f4c5cb..3439c6e 100644 +--- a/arch/mips/include/asm/atomic.h ++++ b/arch/mips/include/asm/atomic.h +@@ -21,6 +21,10 @@ + #include <asm/cmpxchg.h> + #include <asm/war.h> + ++#ifdef CONFIG_GENERIC_ATOMIC64 ++#include <asm-generic/atomic64.h> ++#endif ++ + #define ATOMIC_INIT(i) { (i) } + + /* +@@ -765,6 +769,16 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u) + */ + #define atomic64_add_negative(i, v) (atomic64_add_return(i, (v)) < 0) + ++#define atomic64_read_unchecked(v) atomic64_read(v) ++#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) ++#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) ++#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) ++#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) ++#define atomic64_inc_unchecked(v) atomic64_inc(v) ++#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) ++#define atomic64_dec_unchecked(v) atomic64_dec(v) ++#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) ++ + #endif /* CONFIG_64BIT */ + + /* +diff --git a/arch/mips/include/asm/cache.h b/arch/mips/include/asm/cache.h +index b4db69f..8f3b093 100644 +--- a/arch/mips/include/asm/cache.h ++++ b/arch/mips/include/asm/cache.h +@@ -9,10 +9,11 @@ + #ifndef _ASM_CACHE_H + #define _ASM_CACHE_H + ++#include <linux/const.h> + #include <kmalloc.h> + + #define L1_CACHE_SHIFT CONFIG_MIPS_L1_CACHE_SHIFT +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + #define SMP_CACHE_SHIFT L1_CACHE_SHIFT + #define SMP_CACHE_BYTES L1_CACHE_BYTES +diff --git a/arch/mips/include/asm/elf.h b/arch/mips/include/asm/elf.h +index 455c0ac..ad65fbe 100644 +--- a/arch/mips/include/asm/elf.h ++++ b/arch/mips/include/asm/elf.h +@@ -372,13 +372,16 @@ extern const char *__elf_platform; + #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) + #endif + ++#ifdef CONFIG_PAX_ASLR ++#define PAX_ELF_ET_DYN_BASE (TASK_IS_32BIT_ADDR ? 0x00400000UL : 0x00400000UL) ++ ++#define PAX_DELTA_MMAP_LEN (TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) ++#define PAX_DELTA_STACK_LEN (TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) ++#endif ++ + #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 + struct linux_binprm; + extern int arch_setup_additional_pages(struct linux_binprm *bprm, + int uses_interp); + +-struct mm_struct; +-extern unsigned long arch_randomize_brk(struct mm_struct *mm); +-#define arch_randomize_brk arch_randomize_brk +- + #endif /* _ASM_ELF_H */ +diff --git a/arch/mips/include/asm/exec.h b/arch/mips/include/asm/exec.h +index c1f6afa..38cc6e9 100644 +--- a/arch/mips/include/asm/exec.h ++++ b/arch/mips/include/asm/exec.h +@@ -12,6 +12,6 @@ + #ifndef _ASM_EXEC_H + #define _ASM_EXEC_H + +-extern unsigned long arch_align_stack(unsigned long sp); ++#define arch_align_stack(x) ((x) & ~0xfUL) + + #endif /* _ASM_EXEC_H */ +diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h +index da9bd7d..91aa7ab 100644 +--- a/arch/mips/include/asm/page.h ++++ b/arch/mips/include/asm/page.h +@@ -98,7 +98,7 @@ extern void copy_user_highpage(struct page *to, struct page *from, + #ifdef CONFIG_CPU_MIPS32 + typedef struct { unsigned long pte_low, pte_high; } pte_t; + #define pte_val(x) ((x).pte_low | ((unsigned long long)(x).pte_high << 32)) +- #define __pte(x) ({ pte_t __pte = {(x), ((unsigned long long)(x)) >> 32}; __pte; }) ++ #define __pte(x) ({ pte_t __pte = {(x), (x) >> 32}; __pte; }) + #else + typedef struct { unsigned long long pte; } pte_t; + #define pte_val(x) ((x).pte) +diff --git a/arch/mips/include/asm/pgalloc.h b/arch/mips/include/asm/pgalloc.h +index 881d18b..cea38bc 100644 +--- a/arch/mips/include/asm/pgalloc.h ++++ b/arch/mips/include/asm/pgalloc.h +@@ -37,6 +37,11 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) + { + set_pud(pud, __pud((unsigned long)pmd)); + } ++ ++static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) ++{ ++ pud_populate(mm, pud, pmd); ++} + #endif + + /* +diff --git a/arch/mips/include/asm/thread_info.h b/arch/mips/include/asm/thread_info.h +index 0d85d8e..ec71487 100644 +--- a/arch/mips/include/asm/thread_info.h ++++ b/arch/mips/include/asm/thread_info.h +@@ -123,6 +123,8 @@ register struct thread_info *__current_thread_info __asm__("$28"); + #define TIF_32BIT_ADDR 23 /* 32-bit address space (o32/n32) */ + #define TIF_FPUBOUND 24 /* thread bound to FPU-full CPU set */ + #define TIF_LOAD_WATCH 25 /* If set, load watch registers */ ++/* li takes a 32bit immediate */ ++#define TIF_GRSEC_SETXID 29 /* update credentials on syscall entry/exit */ + #define TIF_SYSCALL_TRACE 31 /* syscall trace active */ + + #ifdef CONFIG_MIPS32_O32 +@@ -146,15 +148,18 @@ register struct thread_info *__current_thread_info __asm__("$28"); + #define _TIF_32BIT_ADDR (1<<TIF_32BIT_ADDR) + #define _TIF_FPUBOUND (1<<TIF_FPUBOUND) + #define _TIF_LOAD_WATCH (1<<TIF_LOAD_WATCH) ++#define _TIF_GRSEC_SETXID (1<<TIF_GRSEC_SETXID) ++ ++#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_GRSEC_SETXID) + + /* work to do in syscall_trace_leave() */ +-#define _TIF_WORK_SYSCALL_EXIT (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT) ++#define _TIF_WORK_SYSCALL_EXIT (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_GRSEC_SETXID) + + /* work to do on interrupt/exception return */ + #define _TIF_WORK_MASK (0x0000ffef & \ + ~(_TIF_SECCOMP | _TIF_SYSCALL_AUDIT)) + /* work to do on any return to u-space */ +-#define _TIF_ALLWORK_MASK (0x8000ffff & ~_TIF_SECCOMP) ++#define _TIF_ALLWORK_MASK ((0x8000ffff & ~_TIF_SECCOMP) | _TIF_GRSEC_SETXID) + + #endif /* __KERNEL__ */ + +diff --git a/arch/mips/kernel/binfmt_elfn32.c b/arch/mips/kernel/binfmt_elfn32.c +index 9fdd8bc..4bd7f1a 100644 +--- a/arch/mips/kernel/binfmt_elfn32.c ++++ b/arch/mips/kernel/binfmt_elfn32.c +@@ -50,6 +50,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; + #undef ELF_ET_DYN_BASE + #define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2) + ++#ifdef CONFIG_PAX_ASLR ++#define PAX_ELF_ET_DYN_BASE (TASK_IS_32BIT_ADDR ? 0x00400000UL : 0x00400000UL) ++ ++#define PAX_DELTA_MMAP_LEN (TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) ++#define PAX_DELTA_STACK_LEN (TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) ++#endif ++ + #include <asm/processor.h> + #include <linux/module.h> + #include <linux/elfcore.h> +diff --git a/arch/mips/kernel/binfmt_elfo32.c b/arch/mips/kernel/binfmt_elfo32.c +index ff44823..97f8906 100644 +--- a/arch/mips/kernel/binfmt_elfo32.c ++++ b/arch/mips/kernel/binfmt_elfo32.c +@@ -52,6 +52,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; + #undef ELF_ET_DYN_BASE + #define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2) + ++#ifdef CONFIG_PAX_ASLR ++#define PAX_ELF_ET_DYN_BASE (TASK_IS_32BIT_ADDR ? 0x00400000UL : 0x00400000UL) ++ ++#define PAX_DELTA_MMAP_LEN (TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) ++#define PAX_DELTA_STACK_LEN (TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) ++#endif ++ + #include <asm/processor.h> + + /* +diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c +index e9a5fd7..378809a 100644 +--- a/arch/mips/kernel/process.c ++++ b/arch/mips/kernel/process.c +@@ -480,15 +480,3 @@ unsigned long get_wchan(struct task_struct *task) + out: + return pc; + } +- +-/* +- * Don't forget that the stack pointer must be aligned on a 8 bytes +- * boundary for 32-bits ABI and 16 bytes for 64-bits ABI. +- */ +-unsigned long arch_align_stack(unsigned long sp) +-{ +- if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) +- sp -= get_random_int() & ~PAGE_MASK; +- +- return sp & ALMASK; +-} +diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c +index 7c24c29..e2f1981 100644 +--- a/arch/mips/kernel/ptrace.c ++++ b/arch/mips/kernel/ptrace.c +@@ -528,6 +528,10 @@ static inline int audit_arch(void) + return arch; + } + ++#ifdef CONFIG_GRKERNSEC_SETXID ++extern void gr_delayed_cred_worker(void); ++#endif ++ + /* + * Notification of system call entry/exit + * - triggered by current->work.syscall_trace +@@ -537,6 +541,11 @@ asmlinkage void syscall_trace_enter(struct pt_regs *regs) + /* do the secure computing check first */ + secure_computing(regs->regs[2]); + ++#ifdef CONFIG_GRKERNSEC_SETXID ++ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID))) ++ gr_delayed_cred_worker(); ++#endif ++ + if (!(current->ptrace & PT_PTRACED)) + goto out; + +diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S +index a632bc1..0b77c7c 100644 +--- a/arch/mips/kernel/scall32-o32.S ++++ b/arch/mips/kernel/scall32-o32.S +@@ -52,7 +52,7 @@ NESTED(handle_sys, PT_SIZE, sp) + + stack_done: + lw t0, TI_FLAGS($28) # syscall tracing enabled? +- li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT ++ li t1, _TIF_SYSCALL_WORK + and t0, t1 + bnez t0, syscall_trace_entry # -> yes + +diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S +index 3b5a5e9..e1ee86d 100644 +--- a/arch/mips/kernel/scall64-64.S ++++ b/arch/mips/kernel/scall64-64.S +@@ -54,7 +54,7 @@ NESTED(handle_sys64, PT_SIZE, sp) + + sd a3, PT_R26(sp) # save a3 for syscall restarting + +- li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT ++ li t1, _TIF_SYSCALL_WORK + LONG_L t0, TI_FLAGS($28) # syscall tracing enabled? + and t0, t1, t0 + bnez t0, syscall_trace_entry +diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S +index 6be6f70..1859577 100644 +--- a/arch/mips/kernel/scall64-n32.S ++++ b/arch/mips/kernel/scall64-n32.S +@@ -53,7 +53,7 @@ NESTED(handle_sysn32, PT_SIZE, sp) + + sd a3, PT_R26(sp) # save a3 for syscall restarting + +- li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT ++ li t1, _TIF_SYSCALL_WORK + LONG_L t0, TI_FLAGS($28) # syscall tracing enabled? + and t0, t1, t0 + bnez t0, n32_syscall_trace_entry +diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S +index 5422855..74e63a3 100644 +--- a/arch/mips/kernel/scall64-o32.S ++++ b/arch/mips/kernel/scall64-o32.S +@@ -81,7 +81,7 @@ NESTED(handle_sys, PT_SIZE, sp) + PTR 4b, bad_stack + .previous + +- li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT ++ li t1, _TIF_SYSCALL_WORK + LONG_L t0, TI_FLAGS($28) # syscall tracing enabled? + and t0, t1, t0 + bnez t0, trace_a_syscall +diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c +index c14f6df..537e729 100644 +--- a/arch/mips/mm/fault.c ++++ b/arch/mips/mm/fault.c +@@ -27,6 +27,23 @@ + #include <asm/highmem.h> /* For VMALLOC_END */ + #include <linux/kdebug.h> + ++#ifdef CONFIG_PAX_PAGEEXEC ++void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) ++{ ++ unsigned long i; ++ ++ printk(KERN_ERR "PAX: bytes at PC: "); ++ for (i = 0; i < 5; i++) { ++ unsigned int c; ++ if (get_user(c, (unsigned int *)pc+i)) ++ printk(KERN_CONT "???????? "); ++ else ++ printk(KERN_CONT "%08x ", c); ++ } ++ printk("\n"); ++} ++#endif ++ + /* + * This routine handles page faults. It determines the address, + * and the problem, and then passes it off to one of the appropriate +diff --git a/arch/mips/mm/mmap.c b/arch/mips/mm/mmap.c +index 302d779..7d35bf8 100644 +--- a/arch/mips/mm/mmap.c ++++ b/arch/mips/mm/mmap.c +@@ -95,6 +95,11 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp, + do_color_align = 1; + + /* requesting a specific address */ ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (!(current->mm->pax_flags & MF_PAX_RANDMMAP)) ++#endif ++ + if (addr) { + if (do_color_align) + addr = COLOUR_ALIGN(addr, pgoff); +@@ -102,8 +107,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp, + addr = PAGE_ALIGN(addr); + + vma = find_vma(mm, addr); +- if (TASK_SIZE - len >= addr && +- (!vma || addr + len <= vma->vm_start)) ++ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vmm, addr, len)) + return addr; + } + +@@ -118,7 +122,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp, + /* At this point: (!vma || addr < vma->vm_end). */ + if (TASK_SIZE - len < addr) + return -ENOMEM; +- if (!vma || addr + len <= vma->vm_start) ++ if (check_heap_stack_gap(vmm, addr, len)) + return addr; + addr = vma->vm_end; + if (do_color_align) +@@ -145,7 +149,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp, + /* make sure it can fit in the remaining address space */ + if (likely(addr > len)) { + vma = find_vma(mm, addr - len); +- if (!vma || addr <= vma->vm_start) { ++ if (check_heap_stack_gap(vmm, addr - len, len)) + /* cache the address as a hint for next time */ + return mm->free_area_cache = addr - len; + } +@@ -165,7 +169,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp, + * return with success: + */ + vma = find_vma(mm, addr); +- if (likely(!vma || addr + len <= vma->vm_start)) { ++ if (check_heap_stack_gap(vmm, addr, len)) { + /* cache the address as a hint for next time */ + return mm->free_area_cache = addr; + } +@@ -242,30 +246,3 @@ void arch_pick_mmap_layout(struct mm_struct *mm) + mm->unmap_area = arch_unmap_area_topdown; + } + } +- +-static inline unsigned long brk_rnd(void) +-{ +- unsigned long rnd = get_random_int(); +- +- rnd = rnd << PAGE_SHIFT; +- /* 8MB for 32bit, 256MB for 64bit */ +- if (TASK_IS_32BIT_ADDR) +- rnd = rnd & 0x7ffffful; +- else +- rnd = rnd & 0xffffffful; +- +- return rnd; +-} +- +-unsigned long arch_randomize_brk(struct mm_struct *mm) +-{ +- unsigned long base = mm->brk; +- unsigned long ret; +- +- ret = PAGE_ALIGN(base + brk_rnd()); +- +- if (ret < mm->brk) +- return mm->brk; +- +- return ret; +-} +diff --git a/arch/mn10300/proc-mn103e010/include/proc/cache.h b/arch/mn10300/proc-mn103e010/include/proc/cache.h +index 967d144..db12197 100644 +--- a/arch/mn10300/proc-mn103e010/include/proc/cache.h ++++ b/arch/mn10300/proc-mn103e010/include/proc/cache.h +@@ -11,12 +11,14 @@ + #ifndef _ASM_PROC_CACHE_H + #define _ASM_PROC_CACHE_H + ++#include <linux/const.h> ++ + /* L1 cache */ + + #define L1_CACHE_NWAYS 4 /* number of ways in caches */ + #define L1_CACHE_NENTRIES 256 /* number of entries in each way */ +-#define L1_CACHE_BYTES 16 /* bytes per entry */ + #define L1_CACHE_SHIFT 4 /* shift for bytes per entry */ ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) /* bytes per entry */ + #define L1_CACHE_WAYDISP 0x1000 /* displacement of one way from the next */ + + #define L1_CACHE_TAG_VALID 0x00000001 /* cache tag valid bit */ +diff --git a/arch/mn10300/proc-mn2ws0050/include/proc/cache.h b/arch/mn10300/proc-mn2ws0050/include/proc/cache.h +index bcb5df2..84fabd2 100644 +--- a/arch/mn10300/proc-mn2ws0050/include/proc/cache.h ++++ b/arch/mn10300/proc-mn2ws0050/include/proc/cache.h +@@ -16,13 +16,15 @@ + #ifndef _ASM_PROC_CACHE_H + #define _ASM_PROC_CACHE_H + ++#include <linux/const.h> ++ + /* + * L1 cache + */ + #define L1_CACHE_NWAYS 4 /* number of ways in caches */ + #define L1_CACHE_NENTRIES 128 /* number of entries in each way */ +-#define L1_CACHE_BYTES 32 /* bytes per entry */ + #define L1_CACHE_SHIFT 5 /* shift for bytes per entry */ ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) /* bytes per entry */ + #define L1_CACHE_WAYDISP 0x1000 /* distance from one way to the next */ + + #define L1_CACHE_TAG_VALID 0x00000001 /* cache tag valid bit */ +diff --git a/arch/openrisc/include/asm/cache.h b/arch/openrisc/include/asm/cache.h +index 4ce7a01..449202a 100644 +--- a/arch/openrisc/include/asm/cache.h ++++ b/arch/openrisc/include/asm/cache.h +@@ -19,11 +19,13 @@ + #ifndef __ASM_OPENRISC_CACHE_H + #define __ASM_OPENRISC_CACHE_H + ++#include <linux/const.h> ++ + /* FIXME: How can we replace these with values from the CPU... + * they shouldn't be hard-coded! + */ + +-#define L1_CACHE_BYTES 16 + #define L1_CACHE_SHIFT 4 ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + #endif /* __ASM_OPENRISC_CACHE_H */ +diff --git a/arch/parisc/include/asm/atomic.h b/arch/parisc/include/asm/atomic.h +index 6c6defc..d30653d 100644 +--- a/arch/parisc/include/asm/atomic.h ++++ b/arch/parisc/include/asm/atomic.h +@@ -229,6 +229,16 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u) + + #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) + ++#define atomic64_read_unchecked(v) atomic64_read(v) ++#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) ++#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) ++#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) ++#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) ++#define atomic64_inc_unchecked(v) atomic64_inc(v) ++#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) ++#define atomic64_dec_unchecked(v) atomic64_dec(v) ++#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) ++ + #endif /* !CONFIG_64BIT */ + + +diff --git a/arch/parisc/include/asm/cache.h b/arch/parisc/include/asm/cache.h +index 47f11c7..3420df2 100644 +--- a/arch/parisc/include/asm/cache.h ++++ b/arch/parisc/include/asm/cache.h +@@ -5,6 +5,7 @@ + #ifndef __ARCH_PARISC_CACHE_H + #define __ARCH_PARISC_CACHE_H + ++#include <linux/const.h> + + /* + * PA 2.0 processors have 64-byte cachelines; PA 1.1 processors have +@@ -15,13 +16,13 @@ + * just ruin performance. + */ + #ifdef CONFIG_PA20 +-#define L1_CACHE_BYTES 64 + #define L1_CACHE_SHIFT 6 + #else +-#define L1_CACHE_BYTES 32 + #define L1_CACHE_SHIFT 5 + #endif + ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) ++ + #ifndef __ASSEMBLY__ + + #define SMP_CACHE_BYTES L1_CACHE_BYTES +diff --git a/arch/parisc/include/asm/elf.h b/arch/parisc/include/asm/elf.h +index 19f6cb1..6c78cf2 100644 +--- a/arch/parisc/include/asm/elf.h ++++ b/arch/parisc/include/asm/elf.h +@@ -342,6 +342,13 @@ struct pt_regs; /* forward declaration... */ + + #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x01000000) + ++#ifdef CONFIG_PAX_ASLR ++#define PAX_ELF_ET_DYN_BASE 0x10000UL ++ ++#define PAX_DELTA_MMAP_LEN 16 ++#define PAX_DELTA_STACK_LEN 16 ++#endif ++ + /* This yields a mask that user programs can use to figure out what + instruction set this CPU supports. This could be done in user space, + but it's not easy, and we've already done it here. */ +diff --git a/arch/parisc/include/asm/pgalloc.h b/arch/parisc/include/asm/pgalloc.h +index fc987a1..6e068ef 100644 +--- a/arch/parisc/include/asm/pgalloc.h ++++ b/arch/parisc/include/asm/pgalloc.h +@@ -61,6 +61,11 @@ static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd) + (__u32)(__pa((unsigned long)pmd) >> PxD_VALUE_SHIFT)); + } + ++static inline void pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd) ++{ ++ pgd_populate(mm, pgd, pmd); ++} ++ + static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) + { + pmd_t *pmd = (pmd_t *)__get_free_pages(GFP_KERNEL|__GFP_REPEAT, +@@ -93,6 +98,7 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) + #define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); }) + #define pmd_free(mm, x) do { } while (0) + #define pgd_populate(mm, pmd, pte) BUG() ++#define pgd_populate_kernel(mm, pmd, pte) BUG() + + #endif + +diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h +index ee99f23..802b0a1 100644 +--- a/arch/parisc/include/asm/pgtable.h ++++ b/arch/parisc/include/asm/pgtable.h +@@ -212,6 +212,17 @@ struct vm_area_struct; + #define PAGE_EXECREAD __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_EXEC |_PAGE_ACCESSED) + #define PAGE_COPY PAGE_EXECREAD + #define PAGE_RWX __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_EXEC |_PAGE_ACCESSED) ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++# define PAGE_SHARED_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_ACCESSED) ++# define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_ACCESSED) ++# define PAGE_READONLY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_ACCESSED) ++#else ++# define PAGE_SHARED_NOEXEC PAGE_SHARED ++# define PAGE_COPY_NOEXEC PAGE_COPY ++# define PAGE_READONLY_NOEXEC PAGE_READONLY ++#endif ++ + #define PAGE_KERNEL __pgprot(_PAGE_KERNEL) + #define PAGE_KERNEL_EXEC __pgprot(_PAGE_KERNEL_EXEC) + #define PAGE_KERNEL_RWX __pgprot(_PAGE_KERNEL_RWX) +diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h +index 9ac0660..6ed15c4 100644 +--- a/arch/parisc/include/asm/uaccess.h ++++ b/arch/parisc/include/asm/uaccess.h +@@ -252,10 +252,10 @@ static inline unsigned long __must_check copy_from_user(void *to, + const void __user *from, + unsigned long n) + { +- int sz = __compiletime_object_size(to); ++ size_t sz = __compiletime_object_size(to); + int ret = -EFAULT; + +- if (likely(sz == -1 || !__builtin_constant_p(n) || sz >= n)) ++ if (likely(sz == (size_t)-1 || !__builtin_constant_p(n) || sz >= n)) + ret = __copy_from_user(to, from, n); + else + copy_from_user_overflow(); +diff --git a/arch/parisc/kernel/module.c b/arch/parisc/kernel/module.c +index 5e34ccf..672bc9c 100644 +--- a/arch/parisc/kernel/module.c ++++ b/arch/parisc/kernel/module.c +@@ -98,16 +98,38 @@ + + /* three functions to determine where in the module core + * or init pieces the location is */ ++static inline int in_init_rx(struct module *me, void *loc) ++{ ++ return (loc >= me->module_init_rx && ++ loc < (me->module_init_rx + me->init_size_rx)); ++} ++ ++static inline int in_init_rw(struct module *me, void *loc) ++{ ++ return (loc >= me->module_init_rw && ++ loc < (me->module_init_rw + me->init_size_rw)); ++} ++ + static inline int in_init(struct module *me, void *loc) + { +- return (loc >= me->module_init && +- loc <= (me->module_init + me->init_size)); ++ return in_init_rx(me, loc) || in_init_rw(me, loc); ++} ++ ++static inline int in_core_rx(struct module *me, void *loc) ++{ ++ return (loc >= me->module_core_rx && ++ loc < (me->module_core_rx + me->core_size_rx)); ++} ++ ++static inline int in_core_rw(struct module *me, void *loc) ++{ ++ return (loc >= me->module_core_rw && ++ loc < (me->module_core_rw + me->core_size_rw)); + } + + static inline int in_core(struct module *me, void *loc) + { +- return (loc >= me->module_core && +- loc <= (me->module_core + me->core_size)); ++ return in_core_rx(me, loc) || in_core_rw(me, loc); + } + + static inline int in_local(struct module *me, void *loc) +@@ -373,13 +395,13 @@ int module_frob_arch_sections(CONST Elf_Ehdr *hdr, + } + + /* align things a bit */ +- me->core_size = ALIGN(me->core_size, 16); +- me->arch.got_offset = me->core_size; +- me->core_size += gots * sizeof(struct got_entry); ++ me->core_size_rw = ALIGN(me->core_size_rw, 16); ++ me->arch.got_offset = me->core_size_rw; ++ me->core_size_rw += gots * sizeof(struct got_entry); + +- me->core_size = ALIGN(me->core_size, 16); +- me->arch.fdesc_offset = me->core_size; +- me->core_size += fdescs * sizeof(Elf_Fdesc); ++ me->core_size_rw = ALIGN(me->core_size_rw, 16); ++ me->arch.fdesc_offset = me->core_size_rw; ++ me->core_size_rw += fdescs * sizeof(Elf_Fdesc); + + me->arch.got_max = gots; + me->arch.fdesc_max = fdescs; +@@ -397,7 +419,7 @@ static Elf64_Word get_got(struct module *me, unsigned long value, long addend) + + BUG_ON(value == 0); + +- got = me->module_core + me->arch.got_offset; ++ got = me->module_core_rw + me->arch.got_offset; + for (i = 0; got[i].addr; i++) + if (got[i].addr == value) + goto out; +@@ -415,7 +437,7 @@ static Elf64_Word get_got(struct module *me, unsigned long value, long addend) + #ifdef CONFIG_64BIT + static Elf_Addr get_fdesc(struct module *me, unsigned long value) + { +- Elf_Fdesc *fdesc = me->module_core + me->arch.fdesc_offset; ++ Elf_Fdesc *fdesc = me->module_core_rw + me->arch.fdesc_offset; + + if (!value) { + printk(KERN_ERR "%s: zero OPD requested!\n", me->name); +@@ -433,7 +455,7 @@ static Elf_Addr get_fdesc(struct module *me, unsigned long value) + + /* Create new one */ + fdesc->addr = value; +- fdesc->gp = (Elf_Addr)me->module_core + me->arch.got_offset; ++ fdesc->gp = (Elf_Addr)me->module_core_rw + me->arch.got_offset; + return (Elf_Addr)fdesc; + } + #endif /* CONFIG_64BIT */ +@@ -845,7 +867,7 @@ register_unwind_table(struct module *me, + + table = (unsigned char *)sechdrs[me->arch.unwind_section].sh_addr; + end = table + sechdrs[me->arch.unwind_section].sh_size; +- gp = (Elf_Addr)me->module_core + me->arch.got_offset; ++ gp = (Elf_Addr)me->module_core_rw + me->arch.got_offset; + + DEBUGP("register_unwind_table(), sect = %d at 0x%p - 0x%p (gp=0x%lx)\n", + me->arch.unwind_section, table, end, gp); +diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c +index c9b9322..02d8940 100644 +--- a/arch/parisc/kernel/sys_parisc.c ++++ b/arch/parisc/kernel/sys_parisc.c +@@ -43,7 +43,7 @@ static unsigned long get_unshared_area(unsigned long addr, unsigned long len) + /* At this point: (!vma || addr < vma->vm_end). */ + if (TASK_SIZE - len < addr) + return -ENOMEM; +- if (!vma || addr + len <= vma->vm_start) ++ if (check_heap_stack_gap(vma, addr, len)) + return addr; + addr = vma->vm_end; + } +@@ -79,7 +79,7 @@ static unsigned long get_shared_area(struct address_space *mapping, + /* At this point: (!vma || addr < vma->vm_end). */ + if (TASK_SIZE - len < addr) + return -ENOMEM; +- if (!vma || addr + len <= vma->vm_start) ++ if (check_heap_stack_gap(vma, addr, len)) + return addr; + addr = DCACHE_ALIGN(vma->vm_end - offset) + offset; + if (addr < vma->vm_end) /* handle wraparound */ +@@ -98,7 +98,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, + if (flags & MAP_FIXED) + return addr; + if (!addr) +- addr = TASK_UNMAPPED_BASE; ++ addr = current->mm->mmap_base; + + if (filp) { + addr = get_shared_area(filp->f_mapping, addr, len, pgoff); +diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c +index 45ba99f..8e22c33 100644 +--- a/arch/parisc/kernel/traps.c ++++ b/arch/parisc/kernel/traps.c +@@ -732,9 +732,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs) + + down_read(¤t->mm->mmap_sem); + vma = find_vma(current->mm,regs->iaoq[0]); +- if (vma && (regs->iaoq[0] >= vma->vm_start) +- && (vma->vm_flags & VM_EXEC)) { +- ++ if (vma && (regs->iaoq[0] >= vma->vm_start)) { + fault_address = regs->iaoq[0]; + fault_space = regs->iasq[0]; + +diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c +index 18162ce..94de376 100644 +--- a/arch/parisc/mm/fault.c ++++ b/arch/parisc/mm/fault.c +@@ -15,6 +15,7 @@ + #include <linux/sched.h> + #include <linux/interrupt.h> + #include <linux/module.h> ++#include <linux/unistd.h> + + #include <asm/uaccess.h> + #include <asm/traps.h> +@@ -52,7 +53,7 @@ DEFINE_PER_CPU(struct exception_data, exception_data); + static unsigned long + parisc_acctyp(unsigned long code, unsigned int inst) + { +- if (code == 6 || code == 16) ++ if (code == 6 || code == 7 || code == 16) + return VM_EXEC; + + switch (inst & 0xf0000000) { +@@ -138,6 +139,116 @@ parisc_acctyp(unsigned long code, unsigned int inst) + } + #endif + ++#ifdef CONFIG_PAX_PAGEEXEC ++/* ++ * PaX: decide what to do with offenders (instruction_pointer(regs) = fault address) ++ * ++ * returns 1 when task should be killed ++ * 2 when rt_sigreturn trampoline was detected ++ * 3 when unpatched PLT trampoline was detected ++ */ ++static int pax_handle_fetch_fault(struct pt_regs *regs) ++{ ++ ++#ifdef CONFIG_PAX_EMUPLT ++ int err; ++ ++ do { /* PaX: unpatched PLT emulation */ ++ unsigned int bl, depwi; ++ ++ err = get_user(bl, (unsigned int *)instruction_pointer(regs)); ++ err |= get_user(depwi, (unsigned int *)(instruction_pointer(regs)+4)); ++ ++ if (err) ++ break; ++ ++ if (bl == 0xEA9F1FDDU && depwi == 0xD6801C1EU) { ++ unsigned int ldw, bv, ldw2, addr = instruction_pointer(regs)-12; ++ ++ err = get_user(ldw, (unsigned int *)addr); ++ err |= get_user(bv, (unsigned int *)(addr+4)); ++ err |= get_user(ldw2, (unsigned int *)(addr+8)); ++ ++ if (err) ++ break; ++ ++ if (ldw == 0x0E801096U && ++ bv == 0xEAC0C000U && ++ ldw2 == 0x0E881095U) ++ { ++ unsigned int resolver, map; ++ ++ err = get_user(resolver, (unsigned int *)(instruction_pointer(regs)+8)); ++ err |= get_user(map, (unsigned int *)(instruction_pointer(regs)+12)); ++ if (err) ++ break; ++ ++ regs->gr[20] = instruction_pointer(regs)+8; ++ regs->gr[21] = map; ++ regs->gr[22] = resolver; ++ regs->iaoq[0] = resolver | 3UL; ++ regs->iaoq[1] = regs->iaoq[0] + 4; ++ return 3; ++ } ++ } ++ } while (0); ++#endif ++ ++#ifdef CONFIG_PAX_EMUTRAMP ++ ++#ifndef CONFIG_PAX_EMUSIGRT ++ if (!(current->mm->pax_flags & MF_PAX_EMUTRAMP)) ++ return 1; ++#endif ++ ++ do { /* PaX: rt_sigreturn emulation */ ++ unsigned int ldi1, ldi2, bel, nop; ++ ++ err = get_user(ldi1, (unsigned int *)instruction_pointer(regs)); ++ err |= get_user(ldi2, (unsigned int *)(instruction_pointer(regs)+4)); ++ err |= get_user(bel, (unsigned int *)(instruction_pointer(regs)+8)); ++ err |= get_user(nop, (unsigned int *)(instruction_pointer(regs)+12)); ++ ++ if (err) ++ break; ++ ++ if ((ldi1 == 0x34190000U || ldi1 == 0x34190002U) && ++ ldi2 == 0x3414015AU && ++ bel == 0xE4008200U && ++ nop == 0x08000240U) ++ { ++ regs->gr[25] = (ldi1 & 2) >> 1; ++ regs->gr[20] = __NR_rt_sigreturn; ++ regs->gr[31] = regs->iaoq[1] + 16; ++ regs->sr[0] = regs->iasq[1]; ++ regs->iaoq[0] = 0x100UL; ++ regs->iaoq[1] = regs->iaoq[0] + 4; ++ regs->iasq[0] = regs->sr[2]; ++ regs->iasq[1] = regs->sr[2]; ++ return 2; ++ } ++ } while (0); ++#endif ++ ++ return 1; ++} ++ ++void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) ++{ ++ unsigned long i; ++ ++ printk(KERN_ERR "PAX: bytes at PC: "); ++ for (i = 0; i < 5; i++) { ++ unsigned int c; ++ if (get_user(c, (unsigned int *)pc+i)) ++ printk(KERN_CONT "???????? "); ++ else ++ printk(KERN_CONT "%08x ", c); ++ } ++ printk("\n"); ++} ++#endif ++ + int fixup_exception(struct pt_regs *regs) + { + const struct exception_table_entry *fix; +@@ -192,8 +303,33 @@ good_area: + + acc_type = parisc_acctyp(code,regs->iir); + +- if ((vma->vm_flags & acc_type) != acc_type) ++ if ((vma->vm_flags & acc_type) != acc_type) { ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ if ((mm->pax_flags & MF_PAX_PAGEEXEC) && (acc_type & VM_EXEC) && ++ (address & ~3UL) == instruction_pointer(regs)) ++ { ++ up_read(&mm->mmap_sem); ++ switch (pax_handle_fetch_fault(regs)) { ++ ++#ifdef CONFIG_PAX_EMUPLT ++ case 3: ++ return; ++#endif ++ ++#ifdef CONFIG_PAX_EMUTRAMP ++ case 2: ++ return; ++#endif ++ ++ } ++ pax_report_fault(regs, (void *)instruction_pointer(regs), (void *)regs->gr[30]); ++ do_group_exit(SIGKILL); ++ } ++#endif ++ + goto bad_area; ++ } + + /* + * If for any reason at all we couldn't handle the fault, make +diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h +index da29032..f76c24c 100644 +--- a/arch/powerpc/include/asm/atomic.h ++++ b/arch/powerpc/include/asm/atomic.h +@@ -522,6 +522,16 @@ static __inline__ long atomic64_inc_not_zero(atomic64_t *v) + return t1; + } + ++#define atomic64_read_unchecked(v) atomic64_read(v) ++#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) ++#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) ++#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) ++#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) ++#define atomic64_inc_unchecked(v) atomic64_inc(v) ++#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) ++#define atomic64_dec_unchecked(v) atomic64_dec(v) ++#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) ++ + #endif /* __powerpc64__ */ + + #endif /* __KERNEL__ */ +diff --git a/arch/powerpc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h +index 9e495c9..b6878e5 100644 +--- a/arch/powerpc/include/asm/cache.h ++++ b/arch/powerpc/include/asm/cache.h +@@ -3,6 +3,7 @@ + + #ifdef __KERNEL__ + ++#include <linux/const.h> + + /* bytes per L1 cache line */ + #if defined(CONFIG_8xx) || defined(CONFIG_403GCX) +@@ -22,7 +23,7 @@ + #define L1_CACHE_SHIFT 7 + #endif + +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + #define SMP_CACHE_BYTES L1_CACHE_BYTES + +diff --git a/arch/powerpc/include/asm/elf.h b/arch/powerpc/include/asm/elf.h +index 3bf9cca..e7457d0 100644 +--- a/arch/powerpc/include/asm/elf.h ++++ b/arch/powerpc/include/asm/elf.h +@@ -178,8 +178,19 @@ typedef elf_fpreg_t elf_vsrreghalf_t32[ELF_NVSRHALFREG]; + the loader. We need to make sure that it is out of the way of the program + that it will "exec", and that there is sufficient room for the brk. */ + +-extern unsigned long randomize_et_dyn(unsigned long base); +-#define ELF_ET_DYN_BASE (randomize_et_dyn(0x20000000)) ++#define ELF_ET_DYN_BASE (0x20000000) ++ ++#ifdef CONFIG_PAX_ASLR ++#define PAX_ELF_ET_DYN_BASE (0x10000000UL) ++ ++#ifdef __powerpc64__ ++#define PAX_DELTA_MMAP_LEN (is_32bit_task() ? 16 : 28) ++#define PAX_DELTA_STACK_LEN (is_32bit_task() ? 16 : 28) ++#else ++#define PAX_DELTA_MMAP_LEN 15 ++#define PAX_DELTA_STACK_LEN 15 ++#endif ++#endif + + /* + * Our registers are always unsigned longs, whether we're a 32 bit +@@ -274,9 +285,6 @@ extern int arch_setup_additional_pages(struct linux_binprm *bprm, + (0x7ff >> (PAGE_SHIFT - 12)) : \ + (0x3ffff >> (PAGE_SHIFT - 12))) + +-extern unsigned long arch_randomize_brk(struct mm_struct *mm); +-#define arch_randomize_brk arch_randomize_brk +- + #endif /* __KERNEL__ */ + + /* +diff --git a/arch/powerpc/include/asm/exec.h b/arch/powerpc/include/asm/exec.h +index 8196e9c..d83a9f3 100644 +--- a/arch/powerpc/include/asm/exec.h ++++ b/arch/powerpc/include/asm/exec.h +@@ -4,6 +4,6 @@ + #ifndef _ASM_POWERPC_EXEC_H + #define _ASM_POWERPC_EXEC_H + +-extern unsigned long arch_align_stack(unsigned long sp); ++#define arch_align_stack(x) ((x) & ~0xfUL) + + #endif /* _ASM_POWERPC_EXEC_H */ +diff --git a/arch/powerpc/include/asm/kmap_types.h b/arch/powerpc/include/asm/kmap_types.h +index bca8fdc..61e9580 100644 +--- a/arch/powerpc/include/asm/kmap_types.h ++++ b/arch/powerpc/include/asm/kmap_types.h +@@ -27,6 +27,7 @@ enum km_type { + KM_PPC_SYNC_PAGE, + KM_PPC_SYNC_ICACHE, + KM_KDB, ++ KM_CLEARPAGE, + KM_TYPE_NR + }; + +diff --git a/arch/powerpc/include/asm/mman.h b/arch/powerpc/include/asm/mman.h +index d4a7f64..451de1c 100644 +--- a/arch/powerpc/include/asm/mman.h ++++ b/arch/powerpc/include/asm/mman.h +@@ -44,7 +44,7 @@ static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot) + } + #define arch_calc_vm_prot_bits(prot) arch_calc_vm_prot_bits(prot) + +-static inline pgprot_t arch_vm_get_page_prot(unsigned long vm_flags) ++static inline pgprot_t arch_vm_get_page_prot(vm_flags_t vm_flags) + { + return (vm_flags & VM_SAO) ? __pgprot(_PAGE_SAO) : __pgprot(0); + } +diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h +index f072e97..b436dee 100644 +--- a/arch/powerpc/include/asm/page.h ++++ b/arch/powerpc/include/asm/page.h +@@ -220,8 +220,9 @@ extern long long virt_phys_offset; + * and needs to be executable. This means the whole heap ends + * up being executable. + */ +-#define VM_DATA_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \ +- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) ++#define VM_DATA_DEFAULT_FLAGS32 \ ++ (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \ ++ VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) + + #define VM_DATA_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \ + VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) +@@ -249,6 +250,9 @@ extern long long virt_phys_offset; + #define is_kernel_addr(x) ((x) >= PAGE_OFFSET) + #endif + ++#define ktla_ktva(addr) (addr) ++#define ktva_ktla(addr) (addr) ++ + /* + * Use the top bit of the higher-level page table entries to indicate whether + * the entries we point to contain hugepages. This works because we know that +diff --git a/arch/powerpc/include/asm/page_64.h b/arch/powerpc/include/asm/page_64.h +index fed85e6..da5c71b 100644 +--- a/arch/powerpc/include/asm/page_64.h ++++ b/arch/powerpc/include/asm/page_64.h +@@ -146,15 +146,18 @@ do { \ + * stack by default, so in the absence of a PT_GNU_STACK program header + * we turn execute permission off. + */ +-#define VM_STACK_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \ +- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) ++#define VM_STACK_DEFAULT_FLAGS32 \ ++ (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \ ++ VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) + + #define VM_STACK_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \ + VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) + ++#ifndef CONFIG_PAX_PAGEEXEC + #define VM_STACK_DEFAULT_FLAGS \ + (is_32bit_task() ? \ + VM_STACK_DEFAULT_FLAGS32 : VM_STACK_DEFAULT_FLAGS64) ++#endif + + #include <asm-generic/getorder.h> + +diff --git a/arch/powerpc/include/asm/pgalloc-64.h b/arch/powerpc/include/asm/pgalloc-64.h +index 292725c..f87ae14 100644 +--- a/arch/powerpc/include/asm/pgalloc-64.h ++++ b/arch/powerpc/include/asm/pgalloc-64.h +@@ -50,6 +50,7 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) + #ifndef CONFIG_PPC_64K_PAGES + + #define pgd_populate(MM, PGD, PUD) pgd_set(PGD, PUD) ++#define pgd_populate_kernel(MM, PGD, PUD) pgd_populate((MM), (PGD), (PUD)) + + static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) + { +@@ -67,6 +68,11 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) + pud_set(pud, (unsigned long)pmd); + } + ++static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) ++{ ++ pud_populate(mm, pud, pmd); ++} ++ + #define pmd_populate(mm, pmd, pte_page) \ + pmd_populate_kernel(mm, pmd, page_address(pte_page)) + #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, (unsigned long)(pte)) +@@ -76,6 +82,7 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) + #else /* CONFIG_PPC_64K_PAGES */ + + #define pud_populate(mm, pud, pmd) pud_set(pud, (unsigned long)pmd) ++#define pud_populate_kernel(mm, pud, pmd) pud_populate((mm), (pud), (pmd)) + + static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, + pte_t *pte) +diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h +index 2e0e411..7899c68 100644 +--- a/arch/powerpc/include/asm/pgtable.h ++++ b/arch/powerpc/include/asm/pgtable.h +@@ -2,6 +2,7 @@ + #define _ASM_POWERPC_PGTABLE_H + #ifdef __KERNEL__ + ++#include <linux/const.h> + #ifndef __ASSEMBLY__ + #include <asm/processor.h> /* For TASK_SIZE */ + #include <asm/mmu.h> +diff --git a/arch/powerpc/include/asm/pte-hash32.h b/arch/powerpc/include/asm/pte-hash32.h +index 4aad413..85d86bf 100644 +--- a/arch/powerpc/include/asm/pte-hash32.h ++++ b/arch/powerpc/include/asm/pte-hash32.h +@@ -21,6 +21,7 @@ + #define _PAGE_FILE 0x004 /* when !present: nonlinear file mapping */ + #define _PAGE_USER 0x004 /* usermode access allowed */ + #define _PAGE_GUARDED 0x008 /* G: prohibit speculative access */ ++#define _PAGE_EXEC _PAGE_GUARDED + #define _PAGE_COHERENT 0x010 /* M: enforce memory coherence (SMP systems) */ + #define _PAGE_NO_CACHE 0x020 /* I: cache inhibit */ + #define _PAGE_WRITETHRU 0x040 /* W: cache write-through */ +diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h +index 9d7f0fb..a28fe69 100644 +--- a/arch/powerpc/include/asm/reg.h ++++ b/arch/powerpc/include/asm/reg.h +@@ -212,6 +212,7 @@ + #define SPRN_DBCR 0x136 /* e300 Data Breakpoint Control Reg */ + #define SPRN_DSISR 0x012 /* Data Storage Interrupt Status Register */ + #define DSISR_NOHPTE 0x40000000 /* no translation found */ ++#define DSISR_GUARDED 0x10000000 /* fetch from guarded storage */ + #define DSISR_PROTFAULT 0x08000000 /* protection fault */ + #define DSISR_ISSTORE 0x02000000 /* access was a store */ + #define DSISR_DABRMATCH 0x00400000 /* hit data breakpoint */ +diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h +index 4a741c7..c8162227b 100644 +--- a/arch/powerpc/include/asm/thread_info.h ++++ b/arch/powerpc/include/asm/thread_info.h +@@ -104,12 +104,14 @@ static inline struct thread_info *current_thread_info(void) + #define TIF_PERFMON_CTXSW 6 /* perfmon needs ctxsw calls */ + #define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */ + #define TIF_SINGLESTEP 8 /* singlestepping active */ +-#define TIF_MEMDIE 9 /* is terminating due to OOM killer */ + #define TIF_SECCOMP 10 /* secure computing */ + #define TIF_RESTOREALL 11 /* Restore all regs (implies NOERROR) */ + #define TIF_NOERROR 12 /* Force successful syscall return */ + #define TIF_NOTIFY_RESUME 13 /* callback before returning to user */ + #define TIF_SYSCALL_TRACEPOINT 15 /* syscall tracepoint instrumentation */ ++#define TIF_MEMDIE 16 /* is terminating due to OOM killer */ ++/* mask must be expressable within 16 bits to satisfy 'andi' instruction reqs */ ++#define TIF_GRSEC_SETXID 9 /* update credentials on syscall entry/exit */ + + /* as above, but as bit values */ + #define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) +@@ -127,8 +129,11 @@ static inline struct thread_info *current_thread_info(void) + #define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME) + #define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT) + #define _TIF_RUNLATCH (1<<TIF_RUNLATCH) ++#define _TIF_GRSEC_SETXID (1<<TIF_GRSEC_SETXID) ++ + #define _TIF_SYSCALL_T_OR_A (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \ +- _TIF_SECCOMP | _TIF_SYSCALL_TRACEPOINT) ++ _TIF_SECCOMP | _TIF_SYSCALL_TRACEPOINT \ ++ _TIF_GRSEC_SETXID) + + #define _TIF_USER_WORK_MASK (_TIF_SIGPENDING | _TIF_NEED_RESCHED | \ + _TIF_NOTIFY_RESUME) +diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h +index bd0fb84..a42a14b 100644 +--- a/arch/powerpc/include/asm/uaccess.h ++++ b/arch/powerpc/include/asm/uaccess.h +@@ -13,6 +13,8 @@ + #define VERIFY_READ 0 + #define VERIFY_WRITE 1 + ++extern void check_object_size(const void *ptr, unsigned long n, bool to); ++ + /* + * The fs value determines whether argument validity checking should be + * performed or not. If get_fs() == USER_DS, checking is performed, with +@@ -327,52 +329,6 @@ do { \ + extern unsigned long __copy_tofrom_user(void __user *to, + const void __user *from, unsigned long size); + +-#ifndef __powerpc64__ +- +-static inline unsigned long copy_from_user(void *to, +- const void __user *from, unsigned long n) +-{ +- unsigned long over; +- +- if (access_ok(VERIFY_READ, from, n)) +- return __copy_tofrom_user((__force void __user *)to, from, n); +- if ((unsigned long)from < TASK_SIZE) { +- over = (unsigned long)from + n - TASK_SIZE; +- return __copy_tofrom_user((__force void __user *)to, from, +- n - over) + over; +- } +- return n; +-} +- +-static inline unsigned long copy_to_user(void __user *to, +- const void *from, unsigned long n) +-{ +- unsigned long over; +- +- if (access_ok(VERIFY_WRITE, to, n)) +- return __copy_tofrom_user(to, (__force void __user *)from, n); +- if ((unsigned long)to < TASK_SIZE) { +- over = (unsigned long)to + n - TASK_SIZE; +- return __copy_tofrom_user(to, (__force void __user *)from, +- n - over) + over; +- } +- return n; +-} +- +-#else /* __powerpc64__ */ +- +-#define __copy_in_user(to, from, size) \ +- __copy_tofrom_user((to), (from), (size)) +- +-extern unsigned long copy_from_user(void *to, const void __user *from, +- unsigned long n); +-extern unsigned long copy_to_user(void __user *to, const void *from, +- unsigned long n); +-extern unsigned long copy_in_user(void __user *to, const void __user *from, +- unsigned long n); +- +-#endif /* __powerpc64__ */ +- + static inline unsigned long __copy_from_user_inatomic(void *to, + const void __user *from, unsigned long n) + { +@@ -396,6 +352,10 @@ static inline unsigned long __copy_from_user_inatomic(void *to, + if (ret == 0) + return 0; + } ++ ++ if (!__builtin_constant_p(n)) ++ check_object_size(to, n, false); ++ + return __copy_tofrom_user((__force void __user *)to, from, n); + } + +@@ -422,6 +382,10 @@ static inline unsigned long __copy_to_user_inatomic(void __user *to, + if (ret == 0) + return 0; + } ++ ++ if (!__builtin_constant_p(n)) ++ check_object_size(from, n, true); ++ + return __copy_tofrom_user(to, (__force const void __user *)from, n); + } + +@@ -439,6 +403,92 @@ static inline unsigned long __copy_to_user(void __user *to, + return __copy_to_user_inatomic(to, from, size); + } + ++#ifndef __powerpc64__ ++ ++static inline unsigned long __must_check copy_from_user(void *to, ++ const void __user *from, unsigned long n) ++{ ++ unsigned long over; ++ ++ if ((long)n < 0) ++ return n; ++ ++ if (access_ok(VERIFY_READ, from, n)) { ++ if (!__builtin_constant_p(n)) ++ check_object_size(to, n, false); ++ return __copy_tofrom_user((__force void __user *)to, from, n); ++ } ++ if ((unsigned long)from < TASK_SIZE) { ++ over = (unsigned long)from + n - TASK_SIZE; ++ if (!__builtin_constant_p(n - over)) ++ check_object_size(to, n - over, false); ++ return __copy_tofrom_user((__force void __user *)to, from, ++ n - over) + over; ++ } ++ return n; ++} ++ ++static inline unsigned long __must_check copy_to_user(void __user *to, ++ const void *from, unsigned long n) ++{ ++ unsigned long over; ++ ++ if ((long)n < 0) ++ return n; ++ ++ if (access_ok(VERIFY_WRITE, to, n)) { ++ if (!__builtin_constant_p(n)) ++ check_object_size(from, n, true); ++ return __copy_tofrom_user(to, (__force void __user *)from, n); ++ } ++ if ((unsigned long)to < TASK_SIZE) { ++ over = (unsigned long)to + n - TASK_SIZE; ++ if (!__builtin_constant_p(n)) ++ check_object_size(from, n - over, true); ++ return __copy_tofrom_user(to, (__force void __user *)from, ++ n - over) + over; ++ } ++ return n; ++} ++ ++#else /* __powerpc64__ */ ++ ++#define __copy_in_user(to, from, size) \ ++ __copy_tofrom_user((to), (from), (size)) ++ ++static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n) ++{ ++ if ((long)n < 0 || n > INT_MAX) ++ return n; ++ ++ if (!__builtin_constant_p(n)) ++ check_object_size(to, n, false); ++ ++ if (likely(access_ok(VERIFY_READ, from, n))) ++ n = __copy_from_user(to, from, n); ++ else ++ memset(to, 0, n); ++ return n; ++} ++ ++static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n) ++{ ++ if ((long)n < 0 || n > INT_MAX) ++ return n; ++ ++ if (likely(access_ok(VERIFY_WRITE, to, n))) { ++ if (!__builtin_constant_p(n)) ++ check_object_size(from, n, true); ++ n = __copy_to_user(to, from, n); ++ } ++ return n; ++} ++ ++extern unsigned long copy_in_user(void __user *to, const void __user *from, ++ unsigned long n); ++ ++#endif /* __powerpc64__ */ ++ + extern unsigned long __clear_user(void __user *addr, unsigned long size); + + static inline unsigned long clear_user(void __user *addr, unsigned long size) +diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S +index 7215cc2..a9730c1 100644 +--- a/arch/powerpc/kernel/exceptions-64e.S ++++ b/arch/powerpc/kernel/exceptions-64e.S +@@ -661,6 +661,7 @@ storage_fault_common: + std r14,_DAR(r1) + std r15,_DSISR(r1) + addi r3,r1,STACK_FRAME_OVERHEAD ++ bl .save_nvgprs + mr r4,r14 + mr r5,r15 + ld r14,PACA_EXGEN+EX_R14(r13) +@@ -669,8 +670,7 @@ storage_fault_common: + cmpdi r3,0 + bne- 1f + b .ret_from_except_lite +-1: bl .save_nvgprs +- mr r5,r3 ++1: mr r5,r3 + addi r3,r1,STACK_FRAME_OVERHEAD + ld r4,_DAR(r1) + bl .bad_page_fault +diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S +index 8f880bc..c5bd2f3 100644 +--- a/arch/powerpc/kernel/exceptions-64s.S ++++ b/arch/powerpc/kernel/exceptions-64s.S +@@ -890,10 +890,10 @@ handle_page_fault: + 11: ld r4,_DAR(r1) + ld r5,_DSISR(r1) + addi r3,r1,STACK_FRAME_OVERHEAD ++ bl .save_nvgprs + bl .do_page_fault + cmpdi r3,0 + beq+ 12f +- bl .save_nvgprs + mr r5,r3 + addi r3,r1,STACK_FRAME_OVERHEAD + lwz r4,_DAR(r1) +diff --git a/arch/powerpc/kernel/module_32.c b/arch/powerpc/kernel/module_32.c +index 2e3200c..72095ce 100644 +--- a/arch/powerpc/kernel/module_32.c ++++ b/arch/powerpc/kernel/module_32.c +@@ -162,7 +162,7 @@ int module_frob_arch_sections(Elf32_Ehdr *hdr, + me->arch.core_plt_section = i; + } + if (!me->arch.core_plt_section || !me->arch.init_plt_section) { +- printk("Module doesn't contain .plt or .init.plt sections.\n"); ++ printk("Module %s doesn't contain .plt or .init.plt sections.\n", me->name); + return -ENOEXEC; + } + +@@ -192,11 +192,16 @@ static uint32_t do_plt_call(void *location, + + DEBUGP("Doing plt for call to 0x%x at 0x%x\n", val, (unsigned int)location); + /* Init, or core PLT? */ +- if (location >= mod->module_core +- && location < mod->module_core + mod->core_size) ++ if ((location >= mod->module_core_rx && location < mod->module_core_rx + mod->core_size_rx) || ++ (location >= mod->module_core_rw && location < mod->module_core_rw + mod->core_size_rw)) + entry = (void *)sechdrs[mod->arch.core_plt_section].sh_addr; +- else ++ else if ((location >= mod->module_init_rx && location < mod->module_init_rx + mod->init_size_rx) || ++ (location >= mod->module_init_rw && location < mod->module_init_rw + mod->init_size_rw)) + entry = (void *)sechdrs[mod->arch.init_plt_section].sh_addr; ++ else { ++ printk(KERN_ERR "%s: invalid R_PPC_REL24 entry found\n", mod->name); ++ return ~0UL; ++ } + + /* Find this entry, or if that fails, the next avail. entry */ + while (entry->jump[0]) { +diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c +index 4937c96..70714b7 100644 +--- a/arch/powerpc/kernel/process.c ++++ b/arch/powerpc/kernel/process.c +@@ -681,8 +681,8 @@ void show_regs(struct pt_regs * regs) + * Lookup NIP late so we have the best change of getting the + * above info out without failing + */ +- printk("NIP ["REG"] %pS\n", regs->nip, (void *)regs->nip); +- printk("LR ["REG"] %pS\n", regs->link, (void *)regs->link); ++ printk("NIP ["REG"] %pA\n", regs->nip, (void *)regs->nip); ++ printk("LR ["REG"] %pA\n", regs->link, (void *)regs->link); + #endif + show_stack(current, (unsigned long *) regs->gpr[1]); + if (!user_mode(regs)) +@@ -1186,10 +1186,10 @@ void show_stack(struct task_struct *tsk, unsigned long *stack) + newsp = stack[0]; + ip = stack[STACK_FRAME_LR_SAVE]; + if (!firstframe || ip != lr) { +- printk("["REG"] ["REG"] %pS", sp, ip, (void *)ip); ++ printk("["REG"] ["REG"] %pA", sp, ip, (void *)ip); + #ifdef CONFIG_FUNCTION_GRAPH_TRACER + if ((ip == rth || ip == mrth) && curr_frame >= 0) { +- printk(" (%pS)", ++ printk(" (%pA)", + (void *)current->ret_stack[curr_frame].ret); + curr_frame--; + } +@@ -1209,7 +1209,7 @@ void show_stack(struct task_struct *tsk, unsigned long *stack) + struct pt_regs *regs = (struct pt_regs *) + (sp + STACK_FRAME_OVERHEAD); + lr = regs->link; +- printk("--- Exception: %lx at %pS\n LR = %pS\n", ++ printk("--- Exception: %lx at %pA\n LR = %pA\n", + regs->trap, (void *)regs->nip, (void *)lr); + firstframe = 1; + } +@@ -1282,58 +1282,3 @@ void thread_info_cache_init(void) + } + + #endif /* THREAD_SHIFT < PAGE_SHIFT */ +- +-unsigned long arch_align_stack(unsigned long sp) +-{ +- if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) +- sp -= get_random_int() & ~PAGE_MASK; +- return sp & ~0xf; +-} +- +-static inline unsigned long brk_rnd(void) +-{ +- unsigned long rnd = 0; +- +- /* 8MB for 32bit, 1GB for 64bit */ +- if (is_32bit_task()) +- rnd = (long)(get_random_int() % (1<<(23-PAGE_SHIFT))); +- else +- rnd = (long)(get_random_int() % (1<<(30-PAGE_SHIFT))); +- +- return rnd << PAGE_SHIFT; +-} +- +-unsigned long arch_randomize_brk(struct mm_struct *mm) +-{ +- unsigned long base = mm->brk; +- unsigned long ret; +- +-#ifdef CONFIG_PPC_STD_MMU_64 +- /* +- * If we are using 1TB segments and we are allowed to randomise +- * the heap, we can put it above 1TB so it is backed by a 1TB +- * segment. Otherwise the heap will be in the bottom 1TB +- * which always uses 256MB segments and this may result in a +- * performance penalty. +- */ +- if (!is_32bit_task() && (mmu_highuser_ssize == MMU_SEGSIZE_1T)) +- base = max_t(unsigned long, mm->brk, 1UL << SID_SHIFT_1T); +-#endif +- +- ret = PAGE_ALIGN(base + brk_rnd()); +- +- if (ret < mm->brk) +- return mm->brk; +- +- return ret; +-} +- +-unsigned long randomize_et_dyn(unsigned long base) +-{ +- unsigned long ret = PAGE_ALIGN(base + brk_rnd()); +- +- if (ret < base) +- return base; +- +- return ret; +-} +diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c +index 8d8e028..c2aeb50 100644 +--- a/arch/powerpc/kernel/ptrace.c ++++ b/arch/powerpc/kernel/ptrace.c +@@ -1702,6 +1702,10 @@ long arch_ptrace(struct task_struct *child, long request, + return ret; + } + ++#ifdef CONFIG_GRKERNSEC_SETXID ++extern void gr_delayed_cred_worker(void); ++#endif ++ + /* + * We must return the syscall number to actually look up in the table. + * This can be -1L to skip running any syscall at all. +@@ -1712,6 +1716,11 @@ long do_syscall_trace_enter(struct pt_regs *regs) + + secure_computing(regs->gpr[0]); + ++#ifdef CONFIG_GRKERNSEC_SETXID ++ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID))) ++ gr_delayed_cred_worker(); ++#endif ++ + if (test_thread_flag(TIF_SYSCALL_TRACE) && + tracehook_report_syscall_entry(regs)) + /* +@@ -1746,6 +1755,11 @@ void do_syscall_trace_leave(struct pt_regs *regs) + { + int step; + ++#ifdef CONFIG_GRKERNSEC_SETXID ++ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID))) ++ gr_delayed_cred_worker(); ++#endif ++ + audit_syscall_exit(regs); + + if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) +diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c +index 45eb998..0cb36bc 100644 +--- a/arch/powerpc/kernel/signal_32.c ++++ b/arch/powerpc/kernel/signal_32.c +@@ -861,7 +861,7 @@ int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka, + /* Save user registers on the stack */ + frame = &rt_sf->uc.uc_mcontext; + addr = frame; +- if (vdso32_rt_sigtramp && current->mm->context.vdso_base) { ++ if (vdso32_rt_sigtramp && current->mm->context.vdso_base != ~0UL) { + if (save_user_regs(regs, frame, 0, 1)) + goto badframe; + regs->link = current->mm->context.vdso_base + vdso32_rt_sigtramp; +diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c +index 2692efd..6673d2e 100644 +--- a/arch/powerpc/kernel/signal_64.c ++++ b/arch/powerpc/kernel/signal_64.c +@@ -430,7 +430,7 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info, + current->thread.fpscr.val = 0; + + /* Set up to return from userspace. */ +- if (vdso64_rt_sigtramp && current->mm->context.vdso_base) { ++ if (vdso64_rt_sigtramp && current->mm->context.vdso_base != ~0UL) { + regs->link = current->mm->context.vdso_base + vdso64_rt_sigtramp; + } else { + err |= setup_trampoline(__NR_rt_sigreturn, &frame->tramp[0]); +diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c +index 1589723..cefe690 100644 +--- a/arch/powerpc/kernel/traps.c ++++ b/arch/powerpc/kernel/traps.c +@@ -133,6 +133,8 @@ static unsigned __kprobes long oops_begin(struct pt_regs *regs) + return flags; + } + ++extern void gr_handle_kernel_exploit(void); ++ + static void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, + int signr) + { +@@ -182,6 +184,9 @@ static void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, + panic("Fatal exception in interrupt"); + if (panic_on_oops) + panic("Fatal exception"); ++ ++ gr_handle_kernel_exploit(); ++ + do_exit(signr); + } + +diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c +index 9eb5b9b..e45498a 100644 +--- a/arch/powerpc/kernel/vdso.c ++++ b/arch/powerpc/kernel/vdso.c +@@ -34,6 +34,7 @@ + #include <asm/firmware.h> + #include <asm/vdso.h> + #include <asm/vdso_datapage.h> ++#include <asm/mman.h> + + #include "setup.h" + +@@ -218,7 +219,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) + vdso_base = VDSO32_MBASE; + #endif + +- current->mm->context.vdso_base = 0; ++ current->mm->context.vdso_base = ~0UL; + + /* vDSO has a problem and was disabled, just don't "enable" it for the + * process +@@ -238,7 +239,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) + vdso_base = get_unmapped_area(NULL, vdso_base, + (vdso_pages << PAGE_SHIFT) + + ((VDSO_ALIGNMENT - 1) & PAGE_MASK), +- 0, 0); ++ 0, MAP_PRIVATE | MAP_EXECUTABLE); + if (IS_ERR_VALUE(vdso_base)) { + rc = vdso_base; + goto fail_mmapsem; +diff --git a/arch/powerpc/lib/usercopy_64.c b/arch/powerpc/lib/usercopy_64.c +index 5eea6f3..5d10396 100644 +--- a/arch/powerpc/lib/usercopy_64.c ++++ b/arch/powerpc/lib/usercopy_64.c +@@ -9,22 +9,6 @@ + #include <linux/module.h> + #include <asm/uaccess.h> + +-unsigned long copy_from_user(void *to, const void __user *from, unsigned long n) +-{ +- if (likely(access_ok(VERIFY_READ, from, n))) +- n = __copy_from_user(to, from, n); +- else +- memset(to, 0, n); +- return n; +-} +- +-unsigned long copy_to_user(void __user *to, const void *from, unsigned long n) +-{ +- if (likely(access_ok(VERIFY_WRITE, to, n))) +- n = __copy_to_user(to, from, n); +- return n; +-} +- + unsigned long copy_in_user(void __user *to, const void __user *from, + unsigned long n) + { +@@ -35,7 +19,5 @@ unsigned long copy_in_user(void __user *to, const void __user *from, + return n; + } + +-EXPORT_SYMBOL(copy_from_user); +-EXPORT_SYMBOL(copy_to_user); + EXPORT_SYMBOL(copy_in_user); + +diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c +index 08ffcf5..a0ab912 100644 +--- a/arch/powerpc/mm/fault.c ++++ b/arch/powerpc/mm/fault.c +@@ -32,6 +32,10 @@ + #include <linux/perf_event.h> + #include <linux/magic.h> + #include <linux/ratelimit.h> ++#include <linux/slab.h> ++#include <linux/pagemap.h> ++#include <linux/compiler.h> ++#include <linux/unistd.h> + + #include <asm/firmware.h> + #include <asm/page.h> +@@ -68,6 +72,33 @@ static inline int notify_page_fault(struct pt_regs *regs) + } + #endif + ++#ifdef CONFIG_PAX_PAGEEXEC ++/* ++ * PaX: decide what to do with offenders (regs->nip = fault address) ++ * ++ * returns 1 when task should be killed ++ */ ++static int pax_handle_fetch_fault(struct pt_regs *regs) ++{ ++ return 1; ++} ++ ++void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) ++{ ++ unsigned long i; ++ ++ printk(KERN_ERR "PAX: bytes at PC: "); ++ for (i = 0; i < 5; i++) { ++ unsigned int c; ++ if (get_user(c, (unsigned int __user *)pc+i)) ++ printk(KERN_CONT "???????? "); ++ else ++ printk(KERN_CONT "%08x ", c); ++ } ++ printk("\n"); ++} ++#endif ++ + /* + * Check whether the instruction at regs->nip is a store using + * an update addressing form which will update r1. +@@ -215,7 +246,7 @@ int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address, + * indicate errors in DSISR but can validly be set in SRR1. + */ + if (trap == 0x400) +- error_code &= 0x48200000; ++ error_code &= 0x58200000; + else + is_write = error_code & DSISR_ISSTORE; + #else +@@ -366,7 +397,7 @@ good_area: + * "undefined". Of those that can be set, this is the only + * one which seems bad. + */ +- if (error_code & 0x10000000) ++ if (error_code & DSISR_GUARDED) + /* Guarded storage error. */ + goto bad_area; + #endif /* CONFIG_8xx */ +@@ -381,7 +412,7 @@ good_area: + * processors use the same I/D cache coherency mechanism + * as embedded. + */ +- if (error_code & DSISR_PROTFAULT) ++ if (error_code & (DSISR_PROTFAULT | DSISR_GUARDED)) + goto bad_area; + #endif /* CONFIG_PPC_STD_MMU */ + +@@ -463,6 +494,23 @@ bad_area: + bad_area_nosemaphore: + /* User mode accesses cause a SIGSEGV */ + if (user_mode(regs)) { ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ if (mm->pax_flags & MF_PAX_PAGEEXEC) { ++#ifdef CONFIG_PPC_STD_MMU ++ if (is_exec && (error_code & (DSISR_PROTFAULT | DSISR_GUARDED))) { ++#else ++ if (is_exec && regs->nip == address) { ++#endif ++ switch (pax_handle_fetch_fault(regs)) { ++ } ++ ++ pax_report_fault(regs, (void *)regs->nip, (void *)regs->gpr[PT_R1]); ++ do_group_exit(SIGKILL); ++ } ++ } ++#endif ++ + _exception(SIGSEGV, regs, code, address); + return 0; + } +diff --git a/arch/powerpc/mm/mmap_64.c b/arch/powerpc/mm/mmap_64.c +index 67a42ed..1c7210c 100644 +--- a/arch/powerpc/mm/mmap_64.c ++++ b/arch/powerpc/mm/mmap_64.c +@@ -91,10 +91,22 @@ void arch_pick_mmap_layout(struct mm_struct *mm) + */ + if (mmap_is_legacy()) { + mm->mmap_base = TASK_UNMAPPED_BASE; ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base += mm->delta_mmap; ++#endif ++ + mm->get_unmapped_area = arch_get_unmapped_area; + mm->unmap_area = arch_unmap_area; + } else { + mm->mmap_base = mmap_base(); ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base -= mm->delta_mmap + mm->delta_stack; ++#endif ++ + mm->get_unmapped_area = arch_get_unmapped_area_topdown; + mm->unmap_area = arch_unmap_area_topdown; + } +diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c +index 73709f7..6b90313 100644 +--- a/arch/powerpc/mm/slice.c ++++ b/arch/powerpc/mm/slice.c +@@ -98,7 +98,7 @@ static int slice_area_is_free(struct mm_struct *mm, unsigned long addr, + if ((mm->task_size - len) < addr) + return 0; + vma = find_vma(mm, addr); +- return (!vma || (addr + len) <= vma->vm_start); ++ return check_heap_stack_gap(vma, addr, len); + } + + static int slice_low_has_vma(struct mm_struct *mm, unsigned long slice) +@@ -256,7 +256,7 @@ full_search: + addr = _ALIGN_UP(addr + 1, 1ul << SLICE_HIGH_SHIFT); + continue; + } +- if (!vma || addr + len <= vma->vm_start) { ++ if (check_heap_stack_gap(vma, addr, len)) { + /* + * Remember the place where we stopped the search: + */ +@@ -313,10 +313,14 @@ static unsigned long slice_find_area_topdown(struct mm_struct *mm, + } + } + +- addr = mm->mmap_base; +- while (addr > len) { ++ if (mm->mmap_base < len) ++ addr = -ENOMEM; ++ else ++ addr = mm->mmap_base - len; ++ ++ while (!IS_ERR_VALUE(addr)) { + /* Go down by chunk size */ +- addr = _ALIGN_DOWN(addr - len, 1ul << pshift); ++ addr = _ALIGN_DOWN(addr, 1ul << pshift); + + /* Check for hit with different page size */ + mask = slice_range_to_mask(addr, len); +@@ -336,7 +340,7 @@ static unsigned long slice_find_area_topdown(struct mm_struct *mm, + * return with success: + */ + vma = find_vma(mm, addr); +- if (!vma || (addr + len) <= vma->vm_start) { ++ if (check_heap_stack_gap(vma, addr, len)) { + /* remember the address as a hint for next time */ + if (use_cache) + mm->free_area_cache = addr; +@@ -348,7 +352,7 @@ static unsigned long slice_find_area_topdown(struct mm_struct *mm, + mm->cached_hole_size = vma->vm_start - addr; + + /* try just below the current vma->vm_start */ +- addr = vma->vm_start; ++ addr = skip_heap_stack_gap(vma, len); + } + + /* +@@ -426,6 +430,11 @@ unsigned long slice_get_unmapped_area(unsigned long addr, unsigned long len, + if (fixed && addr > (mm->task_size - len)) + return -EINVAL; + ++#ifdef CONFIG_PAX_RANDMMAP ++ if (!fixed && (mm->pax_flags & MF_PAX_RANDMMAP)) ++ addr = 0; ++#endif ++ + /* If hint, make sure it matches our alignment restrictions */ + if (!fixed && addr) { + addr = _ALIGN_UP(addr, 1ul << pshift); +diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h +index 748347b..81bc6c7 100644 +--- a/arch/s390/include/asm/atomic.h ++++ b/arch/s390/include/asm/atomic.h +@@ -326,6 +326,16 @@ static inline long long atomic64_dec_if_positive(atomic64_t *v) + #define atomic64_dec_and_test(_v) (atomic64_sub_return(1, _v) == 0) + #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) + ++#define atomic64_read_unchecked(v) atomic64_read(v) ++#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) ++#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) ++#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) ++#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) ++#define atomic64_inc_unchecked(v) atomic64_inc(v) ++#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) ++#define atomic64_dec_unchecked(v) atomic64_dec(v) ++#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) ++ + #define smp_mb__before_atomic_dec() smp_mb() + #define smp_mb__after_atomic_dec() smp_mb() + #define smp_mb__before_atomic_inc() smp_mb() +diff --git a/arch/s390/include/asm/cache.h b/arch/s390/include/asm/cache.h +index 2a30d5a..5e5586f 100644 +--- a/arch/s390/include/asm/cache.h ++++ b/arch/s390/include/asm/cache.h +@@ -11,8 +11,10 @@ + #ifndef __ARCH_S390_CACHE_H + #define __ARCH_S390_CACHE_H + +-#define L1_CACHE_BYTES 256 ++#include <linux/const.h> ++ + #define L1_CACHE_SHIFT 8 ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + #define NET_SKB_PAD 32 + + #define __read_mostly __attribute__((__section__(".data..read_mostly"))) +diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h +index c4ee39f..352881b 100644 +--- a/arch/s390/include/asm/elf.h ++++ b/arch/s390/include/asm/elf.h +@@ -161,8 +161,14 @@ extern unsigned int vdso_enabled; + the loader. We need to make sure that it is out of the way of the program + that it will "exec", and that there is sufficient room for the brk. */ + +-extern unsigned long randomize_et_dyn(unsigned long base); +-#define ELF_ET_DYN_BASE (randomize_et_dyn(STACK_TOP / 3 * 2)) ++#define ELF_ET_DYN_BASE (STACK_TOP / 3 * 2) ++ ++#ifdef CONFIG_PAX_ASLR ++#define PAX_ELF_ET_DYN_BASE (test_thread_flag(TIF_31BIT) ? 0x10000UL : 0x80000000UL) ++ ++#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_31BIT) ? 15 : 26) ++#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_31BIT) ? 15 : 26) ++#endif + + /* This yields a mask that user programs can use to figure out what + instruction set this CPU supports. */ +@@ -210,7 +216,4 @@ struct linux_binprm; + #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 + int arch_setup_additional_pages(struct linux_binprm *, int); + +-extern unsigned long arch_randomize_brk(struct mm_struct *mm); +-#define arch_randomize_brk arch_randomize_brk +- + #endif +diff --git a/arch/s390/include/asm/exec.h b/arch/s390/include/asm/exec.h +index c4a93d6..4d2a9b4 100644 +--- a/arch/s390/include/asm/exec.h ++++ b/arch/s390/include/asm/exec.h +@@ -7,6 +7,6 @@ + #ifndef __ASM_EXEC_H + #define __ASM_EXEC_H + +-extern unsigned long arch_align_stack(unsigned long sp); ++#define arch_align_stack(x) ((x) & ~0xfUL) + + #endif /* __ASM_EXEC_H */ +diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h +index 8f2cada..43072c1 100644 +--- a/arch/s390/include/asm/uaccess.h ++++ b/arch/s390/include/asm/uaccess.h +@@ -236,6 +236,10 @@ static inline unsigned long __must_check + copy_to_user(void __user *to, const void *from, unsigned long n) + { + might_fault(); ++ ++ if ((long)n < 0) ++ return n; ++ + if (access_ok(VERIFY_WRITE, to, n)) + n = __copy_to_user(to, from, n); + return n; +@@ -261,6 +265,9 @@ copy_to_user(void __user *to, const void *from, unsigned long n) + static inline unsigned long __must_check + __copy_from_user(void *to, const void __user *from, unsigned long n) + { ++ if ((long)n < 0) ++ return n; ++ + if (__builtin_constant_p(n) && (n <= 256)) + return uaccess.copy_from_user_small(n, from, to); + else +@@ -292,10 +299,14 @@ __compiletime_warning("copy_from_user() buffer size is not provably correct") + static inline unsigned long __must_check + copy_from_user(void *to, const void __user *from, unsigned long n) + { +- unsigned int sz = __compiletime_object_size(to); ++ size_t sz = __compiletime_object_size(to); + + might_fault(); +- if (unlikely(sz != -1 && sz < n)) { ++ ++ if ((long)n < 0) ++ return n; ++ ++ if (unlikely(sz != (size_t)-1 && sz < n)) { + copy_from_user_overflow(); + return n; + } +diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c +index dfcb343..eda788a 100644 +--- a/arch/s390/kernel/module.c ++++ b/arch/s390/kernel/module.c +@@ -161,11 +161,11 @@ module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs, + + /* Increase core size by size of got & plt and set start + offsets for got and plt. */ +- me->core_size = ALIGN(me->core_size, 4); +- me->arch.got_offset = me->core_size; +- me->core_size += me->arch.got_size; +- me->arch.plt_offset = me->core_size; +- me->core_size += me->arch.plt_size; ++ me->core_size_rw = ALIGN(me->core_size_rw, 4); ++ me->arch.got_offset = me->core_size_rw; ++ me->core_size_rw += me->arch.got_size; ++ me->arch.plt_offset = me->core_size_rx; ++ me->core_size_rx += me->arch.plt_size; + return 0; + } + +@@ -242,7 +242,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab, + if (info->got_initialized == 0) { + Elf_Addr *gotent; + +- gotent = me->module_core + me->arch.got_offset + ++ gotent = me->module_core_rw + me->arch.got_offset + + info->got_offset; + *gotent = val; + info->got_initialized = 1; +@@ -266,7 +266,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab, + else if (r_type == R_390_GOTENT || + r_type == R_390_GOTPLTENT) + *(unsigned int *) loc = +- (val + (Elf_Addr) me->module_core - loc) >> 1; ++ (val + (Elf_Addr) me->module_core_rw - loc) >> 1; + else if (r_type == R_390_GOT64 || + r_type == R_390_GOTPLT64) + *(unsigned long *) loc = val; +@@ -280,7 +280,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab, + case R_390_PLTOFF64: /* 16 bit offset from GOT to PLT. */ + if (info->plt_initialized == 0) { + unsigned int *ip; +- ip = me->module_core + me->arch.plt_offset + ++ ip = me->module_core_rx + me->arch.plt_offset + + info->plt_offset; + #ifndef CONFIG_64BIT + ip[0] = 0x0d105810; /* basr 1,0; l 1,6(1); br 1 */ +@@ -305,7 +305,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab, + val - loc + 0xffffUL < 0x1ffffeUL) || + (r_type == R_390_PLT32DBL && + val - loc + 0xffffffffULL < 0x1fffffffeULL))) +- val = (Elf_Addr) me->module_core + ++ val = (Elf_Addr) me->module_core_rx + + me->arch.plt_offset + + info->plt_offset; + val += rela->r_addend - loc; +@@ -327,7 +327,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab, + case R_390_GOTOFF32: /* 32 bit offset to GOT. */ + case R_390_GOTOFF64: /* 64 bit offset to GOT. */ + val = val + rela->r_addend - +- ((Elf_Addr) me->module_core + me->arch.got_offset); ++ ((Elf_Addr) me->module_core_rw + me->arch.got_offset); + if (r_type == R_390_GOTOFF16) + *(unsigned short *) loc = val; + else if (r_type == R_390_GOTOFF32) +@@ -337,7 +337,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab, + break; + case R_390_GOTPC: /* 32 bit PC relative offset to GOT. */ + case R_390_GOTPCDBL: /* 32 bit PC rel. off. to GOT shifted by 1. */ +- val = (Elf_Addr) me->module_core + me->arch.got_offset + ++ val = (Elf_Addr) me->module_core_rw + me->arch.got_offset + + rela->r_addend - loc; + if (r_type == R_390_GOTPC) + *(unsigned int *) loc = val; +diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c +index 60055ce..ee4b252 100644 +--- a/arch/s390/kernel/process.c ++++ b/arch/s390/kernel/process.c +@@ -316,39 +316,3 @@ unsigned long get_wchan(struct task_struct *p) + } + return 0; + } +- +-unsigned long arch_align_stack(unsigned long sp) +-{ +- if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) +- sp -= get_random_int() & ~PAGE_MASK; +- return sp & ~0xf; +-} +- +-static inline unsigned long brk_rnd(void) +-{ +- /* 8MB for 32bit, 1GB for 64bit */ +- if (is_32bit_task()) +- return (get_random_int() & 0x7ffUL) << PAGE_SHIFT; +- else +- return (get_random_int() & 0x3ffffUL) << PAGE_SHIFT; +-} +- +-unsigned long arch_randomize_brk(struct mm_struct *mm) +-{ +- unsigned long ret = PAGE_ALIGN(mm->brk + brk_rnd()); +- +- if (ret < mm->brk) +- return mm->brk; +- return ret; +-} +- +-unsigned long randomize_et_dyn(unsigned long base) +-{ +- unsigned long ret = PAGE_ALIGN(base + brk_rnd()); +- +- if (!(current->flags & PF_RANDOMIZE)) +- return base; +- if (ret < base) +- return base; +- return ret; +-} +diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c +index 2857c48..d047481 100644 +--- a/arch/s390/mm/mmap.c ++++ b/arch/s390/mm/mmap.c +@@ -92,10 +92,22 @@ void arch_pick_mmap_layout(struct mm_struct *mm) + */ + if (mmap_is_legacy()) { + mm->mmap_base = TASK_UNMAPPED_BASE; ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base += mm->delta_mmap; ++#endif ++ + mm->get_unmapped_area = arch_get_unmapped_area; + mm->unmap_area = arch_unmap_area; + } else { + mm->mmap_base = mmap_base(); ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base -= mm->delta_mmap + mm->delta_stack; ++#endif ++ + mm->get_unmapped_area = arch_get_unmapped_area_topdown; + mm->unmap_area = arch_unmap_area_topdown; + } +@@ -166,10 +178,22 @@ void arch_pick_mmap_layout(struct mm_struct *mm) + */ + if (mmap_is_legacy()) { + mm->mmap_base = TASK_UNMAPPED_BASE; ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base += mm->delta_mmap; ++#endif ++ + mm->get_unmapped_area = s390_get_unmapped_area; + mm->unmap_area = arch_unmap_area; + } else { + mm->mmap_base = mmap_base(); ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base -= mm->delta_mmap + mm->delta_stack; ++#endif ++ + mm->get_unmapped_area = s390_get_unmapped_area_topdown; + mm->unmap_area = arch_unmap_area_topdown; + } +diff --git a/arch/score/include/asm/cache.h b/arch/score/include/asm/cache.h +index ae3d59f..f65f075 100644 +--- a/arch/score/include/asm/cache.h ++++ b/arch/score/include/asm/cache.h +@@ -1,7 +1,9 @@ + #ifndef _ASM_SCORE_CACHE_H + #define _ASM_SCORE_CACHE_H + ++#include <linux/const.h> ++ + #define L1_CACHE_SHIFT 4 +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + #endif /* _ASM_SCORE_CACHE_H */ +diff --git a/arch/score/include/asm/exec.h b/arch/score/include/asm/exec.h +index f9f3cd5..58ff438 100644 +--- a/arch/score/include/asm/exec.h ++++ b/arch/score/include/asm/exec.h +@@ -1,6 +1,6 @@ + #ifndef _ASM_SCORE_EXEC_H + #define _ASM_SCORE_EXEC_H + +-extern unsigned long arch_align_stack(unsigned long sp); ++#define arch_align_stack(x) (x) + + #endif /* _ASM_SCORE_EXEC_H */ +diff --git a/arch/score/kernel/process.c b/arch/score/kernel/process.c +index 2707023..1c2a3b7 100644 +--- a/arch/score/kernel/process.c ++++ b/arch/score/kernel/process.c +@@ -159,8 +159,3 @@ unsigned long get_wchan(struct task_struct *task) + + return task_pt_regs(task)->cp0_epc; + } +- +-unsigned long arch_align_stack(unsigned long sp) +-{ +- return sp; +-} +diff --git a/arch/sh/include/asm/cache.h b/arch/sh/include/asm/cache.h +index ef9e555..331bd29 100644 +--- a/arch/sh/include/asm/cache.h ++++ b/arch/sh/include/asm/cache.h +@@ -9,10 +9,11 @@ + #define __ASM_SH_CACHE_H + #ifdef __KERNEL__ + ++#include <linux/const.h> + #include <linux/init.h> + #include <cpu/cache.h> + +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + #define __read_mostly __attribute__((__section__(".data..read_mostly"))) + +diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c +index afeb710..d1d1289 100644 +--- a/arch/sh/mm/mmap.c ++++ b/arch/sh/mm/mmap.c +@@ -74,8 +74,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, + addr = PAGE_ALIGN(addr); + + vma = find_vma(mm, addr); +- if (TASK_SIZE - len >= addr && +- (!vma || addr + len <= vma->vm_start)) ++ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) + return addr; + } + +@@ -106,7 +105,7 @@ full_search: + } + return -ENOMEM; + } +- if (likely(!vma || addr + len <= vma->vm_start)) { ++ if (likely(check_heap_stack_gap(vma, addr, len))) { + /* + * Remember the place where we stopped the search: + */ +@@ -157,8 +156,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + addr = PAGE_ALIGN(addr); + + vma = find_vma(mm, addr); +- if (TASK_SIZE - len >= addr && +- (!vma || addr + len <= vma->vm_start)) ++ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) + return addr; + } + +@@ -179,7 +177,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + /* make sure it can fit in the remaining address space */ + if (likely(addr > len)) { + vma = find_vma(mm, addr-len); +- if (!vma || addr <= vma->vm_start) { ++ if (check_heap_stack_gap(vma, addr - len, len)) { + /* remember the address as a hint for next time */ + return (mm->free_area_cache = addr-len); + } +@@ -188,18 +186,18 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + if (unlikely(mm->mmap_base < len)) + goto bottomup; + +- addr = mm->mmap_base-len; +- if (do_colour_align) +- addr = COLOUR_ALIGN_DOWN(addr, pgoff); ++ addr = mm->mmap_base - len; + + do { ++ if (do_colour_align) ++ addr = COLOUR_ALIGN_DOWN(addr, pgoff); + /* + * Lookup failure means no vma is above this address, + * else if new region fits below vma->vm_start, + * return with success: + */ + vma = find_vma(mm, addr); +- if (likely(!vma || addr+len <= vma->vm_start)) { ++ if (likely(check_heap_stack_gap(vma, addr, len))) { + /* remember the address as a hint for next time */ + return (mm->free_area_cache = addr); + } +@@ -209,10 +207,8 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + mm->cached_hole_size = vma->vm_start - addr; + + /* try just below the current vma->vm_start */ +- addr = vma->vm_start-len; +- if (do_colour_align) +- addr = COLOUR_ALIGN_DOWN(addr, pgoff); +- } while (likely(len < vma->vm_start)); ++ addr = skip_heap_stack_gap(vma, len); ++ } while (!IS_ERR_VALUE(addr)); + + bottomup: + /* +diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile +index eddcfb3..b117d90 100644 +--- a/arch/sparc/Makefile ++++ b/arch/sparc/Makefile +@@ -75,7 +75,7 @@ drivers-$(CONFIG_OPROFILE) += arch/sparc/oprofile/ + # Export what is needed by arch/sparc/boot/Makefile + export VMLINUX_INIT VMLINUX_MAIN + VMLINUX_INIT := $(head-y) $(init-y) +-VMLINUX_MAIN := $(core-y) kernel/ mm/ fs/ ipc/ security/ crypto/ block/ ++VMLINUX_MAIN := $(core-y) kernel/ mm/ fs/ ipc/ security/ crypto/ block/ grsecurity/ + VMLINUX_MAIN += $(patsubst %/, %/lib.a, $(libs-y)) $(libs-y) + VMLINUX_MAIN += $(drivers-y) $(net-y) + +diff --git a/arch/sparc/include/asm/atomic_64.h b/arch/sparc/include/asm/atomic_64.h +index ce35a1c..2e7b8f9 100644 +--- a/arch/sparc/include/asm/atomic_64.h ++++ b/arch/sparc/include/asm/atomic_64.h +@@ -14,18 +14,40 @@ + #define ATOMIC64_INIT(i) { (i) } + + #define atomic_read(v) (*(volatile int *)&(v)->counter) ++static inline int atomic_read_unchecked(const atomic_unchecked_t *v) ++{ ++ return v->counter; ++} + #define atomic64_read(v) (*(volatile long *)&(v)->counter) ++static inline long atomic64_read_unchecked(const atomic64_unchecked_t *v) ++{ ++ return v->counter; ++} + + #define atomic_set(v, i) (((v)->counter) = i) ++static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i) ++{ ++ v->counter = i; ++} + #define atomic64_set(v, i) (((v)->counter) = i) ++static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long i) ++{ ++ v->counter = i; ++} + + extern void atomic_add(int, atomic_t *); ++extern void atomic_add_unchecked(int, atomic_unchecked_t *); + extern void atomic64_add(long, atomic64_t *); ++extern void atomic64_add_unchecked(long, atomic64_unchecked_t *); + extern void atomic_sub(int, atomic_t *); ++extern void atomic_sub_unchecked(int, atomic_unchecked_t *); + extern void atomic64_sub(long, atomic64_t *); ++extern void atomic64_sub_unchecked(long, atomic64_unchecked_t *); + + extern int atomic_add_ret(int, atomic_t *); ++extern int atomic_add_ret_unchecked(int, atomic_unchecked_t *); + extern long atomic64_add_ret(long, atomic64_t *); ++extern long atomic64_add_ret_unchecked(long, atomic64_unchecked_t *); + extern int atomic_sub_ret(int, atomic_t *); + extern long atomic64_sub_ret(long, atomic64_t *); + +@@ -33,13 +55,29 @@ extern long atomic64_sub_ret(long, atomic64_t *); + #define atomic64_dec_return(v) atomic64_sub_ret(1, v) + + #define atomic_inc_return(v) atomic_add_ret(1, v) ++static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v) ++{ ++ return atomic_add_ret_unchecked(1, v); ++} + #define atomic64_inc_return(v) atomic64_add_ret(1, v) ++static inline long atomic64_inc_return_unchecked(atomic64_unchecked_t *v) ++{ ++ return atomic64_add_ret_unchecked(1, v); ++} + + #define atomic_sub_return(i, v) atomic_sub_ret(i, v) + #define atomic64_sub_return(i, v) atomic64_sub_ret(i, v) + + #define atomic_add_return(i, v) atomic_add_ret(i, v) ++static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v) ++{ ++ return atomic_add_ret_unchecked(i, v); ++} + #define atomic64_add_return(i, v) atomic64_add_ret(i, v) ++static inline long atomic64_add_return_unchecked(long i, atomic64_unchecked_t *v) ++{ ++ return atomic64_add_ret_unchecked(i, v); ++} + + /* + * atomic_inc_and_test - increment and test +@@ -50,6 +88,10 @@ extern long atomic64_sub_ret(long, atomic64_t *); + * other cases. + */ + #define atomic_inc_and_test(v) (atomic_inc_return(v) == 0) ++static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v) ++{ ++ return atomic_inc_return_unchecked(v) == 0; ++} + #define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0) + + #define atomic_sub_and_test(i, v) (atomic_sub_ret(i, v) == 0) +@@ -59,25 +101,60 @@ extern long atomic64_sub_ret(long, atomic64_t *); + #define atomic64_dec_and_test(v) (atomic64_sub_ret(1, v) == 0) + + #define atomic_inc(v) atomic_add(1, v) ++static inline void atomic_inc_unchecked(atomic_unchecked_t *v) ++{ ++ atomic_add_unchecked(1, v); ++} + #define atomic64_inc(v) atomic64_add(1, v) ++static inline void atomic64_inc_unchecked(atomic64_unchecked_t *v) ++{ ++ atomic64_add_unchecked(1, v); ++} + + #define atomic_dec(v) atomic_sub(1, v) ++static inline void atomic_dec_unchecked(atomic_unchecked_t *v) ++{ ++ atomic_sub_unchecked(1, v); ++} + #define atomic64_dec(v) atomic64_sub(1, v) ++static inline void atomic64_dec_unchecked(atomic64_unchecked_t *v) ++{ ++ atomic64_sub_unchecked(1, v); ++} + + #define atomic_add_negative(i, v) (atomic_add_ret(i, v) < 0) + #define atomic64_add_negative(i, v) (atomic64_add_ret(i, v) < 0) + + #define atomic_cmpxchg(v, o, n) (cmpxchg(&((v)->counter), (o), (n))) ++static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new) ++{ ++ return cmpxchg(&v->counter, old, new); ++} + #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) ++static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new) ++{ ++ return xchg(&v->counter, new); ++} + + static inline int __atomic_add_unless(atomic_t *v, int a, int u) + { +- int c, old; ++ int c, old, new; + c = atomic_read(v); + for (;;) { +- if (unlikely(c == (u))) ++ if (unlikely(c == u)) + break; +- old = atomic_cmpxchg((v), c, c + (a)); ++ ++ asm volatile("addcc %2, %0, %0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "tvs %%icc, 6\n" ++#endif ++ ++ : "=r" (new) ++ : "0" (c), "ir" (a) ++ : "cc"); ++ ++ old = atomic_cmpxchg(v, c, new); + if (likely(old == c)) + break; + c = old; +@@ -88,20 +165,35 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u) + #define atomic64_cmpxchg(v, o, n) \ + ((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n))) + #define atomic64_xchg(v, new) (xchg(&((v)->counter), new)) ++static inline long atomic64_xchg_unchecked(atomic64_unchecked_t *v, long new) ++{ ++ return xchg(&v->counter, new); ++} + + static inline long atomic64_add_unless(atomic64_t *v, long a, long u) + { +- long c, old; ++ long c, old, new; + c = atomic64_read(v); + for (;;) { +- if (unlikely(c == (u))) ++ if (unlikely(c == u)) + break; +- old = atomic64_cmpxchg((v), c, c + (a)); ++ ++ asm volatile("addcc %2, %0, %0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "tvs %%xcc, 6\n" ++#endif ++ ++ : "=r" (new) ++ : "0" (c), "ir" (a) ++ : "cc"); ++ ++ old = atomic64_cmpxchg(v, c, new); + if (likely(old == c)) + break; + c = old; + } +- return c != (u); ++ return c != u; + } + + #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) +diff --git a/arch/sparc/include/asm/cache.h b/arch/sparc/include/asm/cache.h +index 69358b5..9d0d492 100644 +--- a/arch/sparc/include/asm/cache.h ++++ b/arch/sparc/include/asm/cache.h +@@ -7,10 +7,12 @@ + #ifndef _SPARC_CACHE_H + #define _SPARC_CACHE_H + ++#include <linux/const.h> ++ + #define ARCH_SLAB_MINALIGN __alignof__(unsigned long long) + + #define L1_CACHE_SHIFT 5 +-#define L1_CACHE_BYTES 32 ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + #ifdef CONFIG_SPARC32 + #define SMP_CACHE_BYTES_SHIFT 5 +diff --git a/arch/sparc/include/asm/elf_32.h b/arch/sparc/include/asm/elf_32.h +index 4269ca6..e3da77f 100644 +--- a/arch/sparc/include/asm/elf_32.h ++++ b/arch/sparc/include/asm/elf_32.h +@@ -114,6 +114,13 @@ typedef struct { + + #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE) + ++#ifdef CONFIG_PAX_ASLR ++#define PAX_ELF_ET_DYN_BASE 0x10000UL ++ ++#define PAX_DELTA_MMAP_LEN 16 ++#define PAX_DELTA_STACK_LEN 16 ++#endif ++ + /* This yields a mask that user programs can use to figure out what + instruction set this cpu supports. This can NOT be done in userspace + on Sparc. */ +diff --git a/arch/sparc/include/asm/elf_64.h b/arch/sparc/include/asm/elf_64.h +index 7df8b7f..4946269 100644 +--- a/arch/sparc/include/asm/elf_64.h ++++ b/arch/sparc/include/asm/elf_64.h +@@ -180,6 +180,13 @@ typedef struct { + #define ELF_ET_DYN_BASE 0x0000010000000000UL + #define COMPAT_ELF_ET_DYN_BASE 0x0000000070000000UL + ++#ifdef CONFIG_PAX_ASLR ++#define PAX_ELF_ET_DYN_BASE (test_thread_flag(TIF_32BIT) ? 0x10000UL : 0x100000UL) ++ ++#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_32BIT) ? 14 : 28) ++#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_32BIT) ? 15 : 29) ++#endif ++ + extern unsigned long sparc64_elf_hwcap; + #define ELF_HWCAP sparc64_elf_hwcap + +diff --git a/arch/sparc/include/asm/pgalloc_32.h b/arch/sparc/include/asm/pgalloc_32.h +index ca2b344..c6084f89 100644 +--- a/arch/sparc/include/asm/pgalloc_32.h ++++ b/arch/sparc/include/asm/pgalloc_32.h +@@ -37,6 +37,7 @@ BTFIXUPDEF_CALL(void, free_pgd_fast, pgd_t *) + BTFIXUPDEF_CALL(void, pgd_set, pgd_t *, pmd_t *) + #define pgd_set(pgdp,pmdp) BTFIXUP_CALL(pgd_set)(pgdp,pmdp) + #define pgd_populate(MM, PGD, PMD) pgd_set(PGD, PMD) ++#define pgd_populate_kernel(MM, PGD, PMD) pgd_populate((MM), (PGD), (PMD)) + + BTFIXUPDEF_CALL(pmd_t *, pmd_alloc_one, struct mm_struct *, unsigned long) + #define pmd_alloc_one(mm, address) BTFIXUP_CALL(pmd_alloc_one)(mm, address) +diff --git a/arch/sparc/include/asm/pgalloc_64.h b/arch/sparc/include/asm/pgalloc_64.h +index 40b2d7a..22a665b 100644 +--- a/arch/sparc/include/asm/pgalloc_64.h ++++ b/arch/sparc/include/asm/pgalloc_64.h +@@ -26,6 +26,7 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) + } + + #define pud_populate(MM, PUD, PMD) pud_set(PUD, PMD) ++#define pud_populate_kernel(MM, PUD, PMD) pud_populate((MM), (PUD), (PMD)) + + static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) + { +diff --git a/arch/sparc/include/asm/pgtable_32.h b/arch/sparc/include/asm/pgtable_32.h +index 3d71018..48a11c5 100644 +--- a/arch/sparc/include/asm/pgtable_32.h ++++ b/arch/sparc/include/asm/pgtable_32.h +@@ -45,6 +45,13 @@ BTFIXUPDEF_SIMM13(user_ptrs_per_pgd) + BTFIXUPDEF_INT(page_none) + BTFIXUPDEF_INT(page_copy) + BTFIXUPDEF_INT(page_readonly) ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++BTFIXUPDEF_INT(page_shared_noexec) ++BTFIXUPDEF_INT(page_copy_noexec) ++BTFIXUPDEF_INT(page_readonly_noexec) ++#endif ++ + BTFIXUPDEF_INT(page_kernel) + + #define PMD_SHIFT SUN4C_PMD_SHIFT +@@ -66,6 +73,16 @@ extern pgprot_t PAGE_SHARED; + #define PAGE_COPY __pgprot(BTFIXUP_INT(page_copy)) + #define PAGE_READONLY __pgprot(BTFIXUP_INT(page_readonly)) + ++#ifdef CONFIG_PAX_PAGEEXEC ++extern pgprot_t PAGE_SHARED_NOEXEC; ++# define PAGE_COPY_NOEXEC __pgprot(BTFIXUP_INT(page_copy_noexec)) ++# define PAGE_READONLY_NOEXEC __pgprot(BTFIXUP_INT(page_readonly_noexec)) ++#else ++# define PAGE_SHARED_NOEXEC PAGE_SHARED ++# define PAGE_COPY_NOEXEC PAGE_COPY ++# define PAGE_READONLY_NOEXEC PAGE_READONLY ++#endif ++ + extern unsigned long page_kernel; + + #ifdef MODULE +diff --git a/arch/sparc/include/asm/pgtsrmmu.h b/arch/sparc/include/asm/pgtsrmmu.h +index f6ae2b2..b03ffc7 100644 +--- a/arch/sparc/include/asm/pgtsrmmu.h ++++ b/arch/sparc/include/asm/pgtsrmmu.h +@@ -115,6 +115,13 @@ + SRMMU_EXEC | SRMMU_REF) + #define SRMMU_PAGE_RDONLY __pgprot(SRMMU_VALID | SRMMU_CACHE | \ + SRMMU_EXEC | SRMMU_REF) ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++#define SRMMU_PAGE_SHARED_NOEXEC __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_WRITE | SRMMU_REF) ++#define SRMMU_PAGE_COPY_NOEXEC __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_REF) ++#define SRMMU_PAGE_RDONLY_NOEXEC __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_REF) ++#endif ++ + #define SRMMU_PAGE_KERNEL __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_PRIV | \ + SRMMU_DIRTY | SRMMU_REF) + +diff --git a/arch/sparc/include/asm/spinlock_64.h b/arch/sparc/include/asm/spinlock_64.h +index 9689176..63c18ea 100644 +--- a/arch/sparc/include/asm/spinlock_64.h ++++ b/arch/sparc/include/asm/spinlock_64.h +@@ -92,14 +92,19 @@ static inline void arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long fla + + /* Multi-reader locks, these are much saner than the 32-bit Sparc ones... */ + +-static void inline arch_read_lock(arch_rwlock_t *lock) ++static inline void arch_read_lock(arch_rwlock_t *lock) + { + unsigned long tmp1, tmp2; + + __asm__ __volatile__ ( + "1: ldsw [%2], %0\n" + " brlz,pn %0, 2f\n" +-"4: add %0, 1, %1\n" ++"4: addcc %0, 1, %1\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++" tvs %%icc, 6\n" ++#endif ++ + " cas [%2], %0, %1\n" + " cmp %0, %1\n" + " bne,pn %%icc, 1b\n" +@@ -112,10 +117,10 @@ static void inline arch_read_lock(arch_rwlock_t *lock) + " .previous" + : "=&r" (tmp1), "=&r" (tmp2) + : "r" (lock) +- : "memory"); ++ : "memory", "cc"); + } + +-static int inline arch_read_trylock(arch_rwlock_t *lock) ++static inline int arch_read_trylock(arch_rwlock_t *lock) + { + int tmp1, tmp2; + +@@ -123,7 +128,12 @@ static int inline arch_read_trylock(arch_rwlock_t *lock) + "1: ldsw [%2], %0\n" + " brlz,a,pn %0, 2f\n" + " mov 0, %0\n" +-" add %0, 1, %1\n" ++" addcc %0, 1, %1\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++" tvs %%icc, 6\n" ++#endif ++ + " cas [%2], %0, %1\n" + " cmp %0, %1\n" + " bne,pn %%icc, 1b\n" +@@ -136,13 +146,18 @@ static int inline arch_read_trylock(arch_rwlock_t *lock) + return tmp1; + } + +-static void inline arch_read_unlock(arch_rwlock_t *lock) ++static inline void arch_read_unlock(arch_rwlock_t *lock) + { + unsigned long tmp1, tmp2; + + __asm__ __volatile__( + "1: lduw [%2], %0\n" +-" sub %0, 1, %1\n" ++" subcc %0, 1, %1\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++" tvs %%icc, 6\n" ++#endif ++ + " cas [%2], %0, %1\n" + " cmp %0, %1\n" + " bne,pn %%xcc, 1b\n" +@@ -152,7 +167,7 @@ static void inline arch_read_unlock(arch_rwlock_t *lock) + : "memory"); + } + +-static void inline arch_write_lock(arch_rwlock_t *lock) ++static inline void arch_write_lock(arch_rwlock_t *lock) + { + unsigned long mask, tmp1, tmp2; + +@@ -177,7 +192,7 @@ static void inline arch_write_lock(arch_rwlock_t *lock) + : "memory"); + } + +-static void inline arch_write_unlock(arch_rwlock_t *lock) ++static inline void arch_write_unlock(arch_rwlock_t *lock) + { + __asm__ __volatile__( + " stw %%g0, [%0]" +@@ -186,7 +201,7 @@ static void inline arch_write_unlock(arch_rwlock_t *lock) + : "memory"); + } + +-static int inline arch_write_trylock(arch_rwlock_t *lock) ++static inline int arch_write_trylock(arch_rwlock_t *lock) + { + unsigned long mask, tmp1, tmp2, result; + +diff --git a/arch/sparc/include/asm/thread_info_32.h b/arch/sparc/include/asm/thread_info_32.h +index c2a1080..21ed218 100644 +--- a/arch/sparc/include/asm/thread_info_32.h ++++ b/arch/sparc/include/asm/thread_info_32.h +@@ -50,6 +50,8 @@ struct thread_info { + unsigned long w_saved; + + struct restart_block restart_block; ++ ++ unsigned long lowest_stack; + }; + + /* +diff --git a/arch/sparc/include/asm/thread_info_64.h b/arch/sparc/include/asm/thread_info_64.h +index 01d057f..13a7d2f 100644 +--- a/arch/sparc/include/asm/thread_info_64.h ++++ b/arch/sparc/include/asm/thread_info_64.h +@@ -63,6 +63,8 @@ struct thread_info { + struct pt_regs *kern_una_regs; + unsigned int kern_una_insn; + ++ unsigned long lowest_stack; ++ + unsigned long fpregs[0] __attribute__ ((aligned(64))); + }; + +@@ -214,10 +216,11 @@ register struct thread_info *current_thread_info_reg asm("g6"); + #define TIF_UNALIGNED 5 /* allowed to do unaligned accesses */ + /* flag bit 6 is available */ + #define TIF_32BIT 7 /* 32-bit binary */ +-/* flag bit 8 is available */ ++#define TIF_GRSEC_SETXID 8 /* update credentials on syscall entry/exit */ + #define TIF_SECCOMP 9 /* secure computing */ + #define TIF_SYSCALL_AUDIT 10 /* syscall auditing active */ + #define TIF_SYSCALL_TRACEPOINT 11 /* syscall tracepoint instrumentation */ ++ + /* NOTE: Thread flags >= 12 should be ones we have no interest + * in using in assembly, else we can't use the mask as + * an immediate value in instructions such as andcc. +@@ -236,12 +239,18 @@ register struct thread_info *current_thread_info_reg asm("g6"); + #define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT) + #define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT) + #define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) ++#define _TIF_GRSEC_SETXID (1<<TIF_GRSEC_SETXID) + + #define _TIF_USER_WORK_MASK ((0xff << TI_FLAG_WSAVED_SHIFT) | \ + _TIF_DO_NOTIFY_RESUME_MASK | \ + _TIF_NEED_RESCHED) + #define _TIF_DO_NOTIFY_RESUME_MASK (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING) + ++#define _TIF_WORK_SYSCALL \ ++ (_TIF_SYSCALL_TRACE | _TIF_SECCOMP | _TIF_SYSCALL_AUDIT | \ ++ _TIF_SYSCALL_TRACEPOINT | _TIF_GRSEC_SETXID) ++ ++ + /* + * Thread-synchronous status. + * +diff --git a/arch/sparc/include/asm/uaccess.h b/arch/sparc/include/asm/uaccess.h +index e88fbe5..96b0ce5 100644 +--- a/arch/sparc/include/asm/uaccess.h ++++ b/arch/sparc/include/asm/uaccess.h +@@ -1,5 +1,13 @@ + #ifndef ___ASM_SPARC_UACCESS_H + #define ___ASM_SPARC_UACCESS_H ++ ++#ifdef __KERNEL__ ++#ifndef __ASSEMBLY__ ++#include <linux/types.h> ++extern void check_object_size(const void *ptr, unsigned long n, bool to); ++#endif ++#endif ++ + #if defined(__sparc__) && defined(__arch64__) + #include <asm/uaccess_64.h> + #else +diff --git a/arch/sparc/include/asm/uaccess_32.h b/arch/sparc/include/asm/uaccess_32.h +index 8303ac4..07f333d 100644 +--- a/arch/sparc/include/asm/uaccess_32.h ++++ b/arch/sparc/include/asm/uaccess_32.h +@@ -249,27 +249,46 @@ extern unsigned long __copy_user(void __user *to, const void __user *from, unsig + + static inline unsigned long copy_to_user(void __user *to, const void *from, unsigned long n) + { +- if (n && __access_ok((unsigned long) to, n)) ++ if ((long)n < 0) ++ return n; ++ ++ if (n && __access_ok((unsigned long) to, n)) { ++ if (!__builtin_constant_p(n)) ++ check_object_size(from, n, true); + return __copy_user(to, (__force void __user *) from, n); +- else ++ } else + return n; + } + + static inline unsigned long __copy_to_user(void __user *to, const void *from, unsigned long n) + { ++ if ((long)n < 0) ++ return n; ++ ++ if (!__builtin_constant_p(n)) ++ check_object_size(from, n, true); ++ + return __copy_user(to, (__force void __user *) from, n); + } + + static inline unsigned long copy_from_user(void *to, const void __user *from, unsigned long n) + { +- if (n && __access_ok((unsigned long) from, n)) ++ if ((long)n < 0) ++ return n; ++ ++ if (n && __access_ok((unsigned long) from, n)) { ++ if (!__builtin_constant_p(n)) ++ check_object_size(to, n, false); + return __copy_user((__force void __user *) to, from, n); +- else ++ } else + return n; + } + + static inline unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n) + { ++ if ((long)n < 0) ++ return n; ++ + return __copy_user((__force void __user *) to, from, n); + } + +diff --git a/arch/sparc/include/asm/uaccess_64.h b/arch/sparc/include/asm/uaccess_64.h +index a1091afb..380228e 100644 +--- a/arch/sparc/include/asm/uaccess_64.h ++++ b/arch/sparc/include/asm/uaccess_64.h +@@ -10,6 +10,7 @@ + #include <linux/compiler.h> + #include <linux/string.h> + #include <linux/thread_info.h> ++#include <linux/kernel.h> + #include <asm/asi.h> + #include <asm/spitfire.h> + #include <asm-generic/uaccess-unaligned.h> +@@ -212,8 +213,15 @@ extern unsigned long copy_from_user_fixup(void *to, const void __user *from, + static inline unsigned long __must_check + copy_from_user(void *to, const void __user *from, unsigned long size) + { +- unsigned long ret = ___copy_from_user(to, from, size); ++ unsigned long ret; + ++ if ((long)size < 0 || size > INT_MAX) ++ return size; ++ ++ if (!__builtin_constant_p(size)) ++ check_object_size(to, size, false); ++ ++ ret = ___copy_from_user(to, from, size); + if (unlikely(ret)) + ret = copy_from_user_fixup(to, from, size); + +@@ -229,8 +237,15 @@ extern unsigned long copy_to_user_fixup(void __user *to, const void *from, + static inline unsigned long __must_check + copy_to_user(void __user *to, const void *from, unsigned long size) + { +- unsigned long ret = ___copy_to_user(to, from, size); ++ unsigned long ret; + ++ if ((long)size < 0 || size > INT_MAX) ++ return size; ++ ++ if (!__builtin_constant_p(size)) ++ check_object_size(from, size, true); ++ ++ ret = ___copy_to_user(to, from, size); + if (unlikely(ret)) + ret = copy_to_user_fixup(to, from, size); + return ret; +diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile +index cb85458..e063f17 100644 +--- a/arch/sparc/kernel/Makefile ++++ b/arch/sparc/kernel/Makefile +@@ -3,7 +3,7 @@ + # + + asflags-y := -ansi +-ccflags-y := -Werror ++#ccflags-y := -Werror + + extra-y := head_$(BITS).o + extra-y += init_task.o +diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c +index efa0754..74b03fe 100644 +--- a/arch/sparc/kernel/process_32.c ++++ b/arch/sparc/kernel/process_32.c +@@ -200,7 +200,7 @@ void __show_backtrace(unsigned long fp) + rw->ins[4], rw->ins[5], + rw->ins[6], + rw->ins[7]); +- printk("%pS\n", (void *) rw->ins[7]); ++ printk("%pA\n", (void *) rw->ins[7]); + rw = (struct reg_window32 *) rw->ins[6]; + } + spin_unlock_irqrestore(&sparc_backtrace_lock, flags); +@@ -267,14 +267,14 @@ void show_regs(struct pt_regs *r) + + printk("PSR: %08lx PC: %08lx NPC: %08lx Y: %08lx %s\n", + r->psr, r->pc, r->npc, r->y, print_tainted()); +- printk("PC: <%pS>\n", (void *) r->pc); ++ printk("PC: <%pA>\n", (void *) r->pc); + printk("%%G: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", + r->u_regs[0], r->u_regs[1], r->u_regs[2], r->u_regs[3], + r->u_regs[4], r->u_regs[5], r->u_regs[6], r->u_regs[7]); + printk("%%O: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", + r->u_regs[8], r->u_regs[9], r->u_regs[10], r->u_regs[11], + r->u_regs[12], r->u_regs[13], r->u_regs[14], r->u_regs[15]); +- printk("RPC: <%pS>\n", (void *) r->u_regs[15]); ++ printk("RPC: <%pA>\n", (void *) r->u_regs[15]); + + printk("%%L: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", + rw->locals[0], rw->locals[1], rw->locals[2], rw->locals[3], +@@ -309,7 +309,7 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp) + rw = (struct reg_window32 *) fp; + pc = rw->ins[7]; + printk("[%08lx : ", pc); +- printk("%pS ] ", (void *) pc); ++ printk("%pA ] ", (void *) pc); + fp = rw->ins[6]; + } while (++count < 16); + printk("\n"); +diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c +index aff0c72..9067b39 100644 +--- a/arch/sparc/kernel/process_64.c ++++ b/arch/sparc/kernel/process_64.c +@@ -179,14 +179,14 @@ static void show_regwindow(struct pt_regs *regs) + printk("i4: %016lx i5: %016lx i6: %016lx i7: %016lx\n", + rwk->ins[4], rwk->ins[5], rwk->ins[6], rwk->ins[7]); + if (regs->tstate & TSTATE_PRIV) +- printk("I7: <%pS>\n", (void *) rwk->ins[7]); ++ printk("I7: <%pA>\n", (void *) rwk->ins[7]); + } + + void show_regs(struct pt_regs *regs) + { + printk("TSTATE: %016lx TPC: %016lx TNPC: %016lx Y: %08x %s\n", regs->tstate, + regs->tpc, regs->tnpc, regs->y, print_tainted()); +- printk("TPC: <%pS>\n", (void *) regs->tpc); ++ printk("TPC: <%pA>\n", (void *) regs->tpc); + printk("g0: %016lx g1: %016lx g2: %016lx g3: %016lx\n", + regs->u_regs[0], regs->u_regs[1], regs->u_regs[2], + regs->u_regs[3]); +@@ -199,7 +199,7 @@ void show_regs(struct pt_regs *regs) + printk("o4: %016lx o5: %016lx sp: %016lx ret_pc: %016lx\n", + regs->u_regs[12], regs->u_regs[13], regs->u_regs[14], + regs->u_regs[15]); +- printk("RPC: <%pS>\n", (void *) regs->u_regs[15]); ++ printk("RPC: <%pA>\n", (void *) regs->u_regs[15]); + show_regwindow(regs); + show_stack(current, (unsigned long *) regs->u_regs[UREG_FP]); + } +@@ -284,7 +284,7 @@ void arch_trigger_all_cpu_backtrace(void) + ((tp && tp->task) ? tp->task->pid : -1)); + + if (gp->tstate & TSTATE_PRIV) { +- printk(" TPC[%pS] O7[%pS] I7[%pS] RPC[%pS]\n", ++ printk(" TPC[%pA] O7[%pA] I7[%pA] RPC[%pA]\n", + (void *) gp->tpc, + (void *) gp->o7, + (void *) gp->i7, +diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c +index 6f97c07..b1300ec 100644 +--- a/arch/sparc/kernel/ptrace_64.c ++++ b/arch/sparc/kernel/ptrace_64.c +@@ -1057,6 +1057,10 @@ long arch_ptrace(struct task_struct *child, long request, + return ret; + } + ++#ifdef CONFIG_GRKERNSEC_SETXID ++extern void gr_delayed_cred_worker(void); ++#endif ++ + asmlinkage int syscall_trace_enter(struct pt_regs *regs) + { + int ret = 0; +@@ -1064,6 +1068,11 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs) + /* do the secure computing check first */ + secure_computing(regs->u_regs[UREG_G1]); + ++#ifdef CONFIG_GRKERNSEC_SETXID ++ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID))) ++ gr_delayed_cred_worker(); ++#endif ++ + if (test_thread_flag(TIF_SYSCALL_TRACE)) + ret = tracehook_report_syscall_entry(regs); + +@@ -1084,6 +1093,11 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs) + + asmlinkage void syscall_trace_leave(struct pt_regs *regs) + { ++#ifdef CONFIG_GRKERNSEC_SETXID ++ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID))) ++ gr_delayed_cred_worker(); ++#endif ++ + audit_syscall_exit(regs); + + if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) +diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c +index 42b282f..28ce9f2 100644 +--- a/arch/sparc/kernel/sys_sparc_32.c ++++ b/arch/sparc/kernel/sys_sparc_32.c +@@ -56,7 +56,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi + if (ARCH_SUN4C && len > 0x20000000) + return -ENOMEM; + if (!addr) +- addr = TASK_UNMAPPED_BASE; ++ addr = current->mm->mmap_base; + + if (flags & MAP_SHARED) + addr = COLOUR_ALIGN(addr); +@@ -71,7 +71,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi + } + if (TASK_SIZE - PAGE_SIZE - len < addr) + return -ENOMEM; +- if (!vmm || addr + len <= vmm->vm_start) ++ if (check_heap_stack_gap(vmm, addr, len)) + return addr; + addr = vmm->vm_end; + if (flags & MAP_SHARED) +diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c +index 3ee51f1..2ba4913 100644 +--- a/arch/sparc/kernel/sys_sparc_64.c ++++ b/arch/sparc/kernel/sys_sparc_64.c +@@ -124,7 +124,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi + /* We do not accept a shared mapping if it would violate + * cache aliasing constraints. + */ +- if ((flags & MAP_SHARED) && ++ if ((filp || (flags & MAP_SHARED)) && + ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1))) + return -EINVAL; + return addr; +@@ -139,6 +139,10 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi + if (filp || (flags & MAP_SHARED)) + do_color_align = 1; + ++#ifdef CONFIG_PAX_RANDMMAP ++ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) ++#endif ++ + if (addr) { + if (do_color_align) + addr = COLOUR_ALIGN(addr, pgoff); +@@ -146,15 +150,14 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi + addr = PAGE_ALIGN(addr); + + vma = find_vma(mm, addr); +- if (task_size - len >= addr && +- (!vma || addr + len <= vma->vm_start)) ++ if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) + return addr; + } + + if (len > mm->cached_hole_size) { +- start_addr = addr = mm->free_area_cache; ++ start_addr = addr = mm->free_area_cache; + } else { +- start_addr = addr = TASK_UNMAPPED_BASE; ++ start_addr = addr = mm->mmap_base; + mm->cached_hole_size = 0; + } + +@@ -174,14 +177,14 @@ full_search: + vma = find_vma(mm, VA_EXCLUDE_END); + } + if (unlikely(task_size < addr)) { +- if (start_addr != TASK_UNMAPPED_BASE) { +- start_addr = addr = TASK_UNMAPPED_BASE; ++ if (start_addr != mm->mmap_base) { ++ start_addr = addr = mm->mmap_base; + mm->cached_hole_size = 0; + goto full_search; + } + return -ENOMEM; + } +- if (likely(!vma || addr + len <= vma->vm_start)) { ++ if (likely(check_heap_stack_gap(vma, addr, len))) { + /* + * Remember the place where we stopped the search: + */ +@@ -215,7 +218,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + /* We do not accept a shared mapping if it would violate + * cache aliasing constraints. + */ +- if ((flags & MAP_SHARED) && ++ if ((filp || (flags & MAP_SHARED)) && + ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1))) + return -EINVAL; + return addr; +@@ -236,8 +239,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + addr = PAGE_ALIGN(addr); + + vma = find_vma(mm, addr); +- if (task_size - len >= addr && +- (!vma || addr + len <= vma->vm_start)) ++ if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) + return addr; + } + +@@ -258,7 +260,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + /* make sure it can fit in the remaining address space */ + if (likely(addr > len)) { + vma = find_vma(mm, addr-len); +- if (!vma || addr <= vma->vm_start) { ++ if (check_heap_stack_gap(vma, addr - len, len)) { + /* remember the address as a hint for next time */ + return (mm->free_area_cache = addr-len); + } +@@ -267,18 +269,18 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + if (unlikely(mm->mmap_base < len)) + goto bottomup; + +- addr = mm->mmap_base-len; +- if (do_color_align) +- addr = COLOUR_ALIGN_DOWN(addr, pgoff); ++ addr = mm->mmap_base - len; + + do { ++ if (do_color_align) ++ addr = COLOUR_ALIGN_DOWN(addr, pgoff); + /* + * Lookup failure means no vma is above this address, + * else if new region fits below vma->vm_start, + * return with success: + */ + vma = find_vma(mm, addr); +- if (likely(!vma || addr+len <= vma->vm_start)) { ++ if (likely(check_heap_stack_gap(vma, addr, len))) { + /* remember the address as a hint for next time */ + return (mm->free_area_cache = addr); + } +@@ -288,10 +290,8 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + mm->cached_hole_size = vma->vm_start - addr; + + /* try just below the current vma->vm_start */ +- addr = vma->vm_start-len; +- if (do_color_align) +- addr = COLOUR_ALIGN_DOWN(addr, pgoff); +- } while (likely(len < vma->vm_start)); ++ addr = skip_heap_stack_gap(vma, len); ++ } while (!IS_ERR_VALUE(addr)); + + bottomup: + /* +@@ -390,6 +390,12 @@ void arch_pick_mmap_layout(struct mm_struct *mm) + gap == RLIM_INFINITY || + sysctl_legacy_va_layout) { + mm->mmap_base = TASK_UNMAPPED_BASE + random_factor; ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base += mm->delta_mmap; ++#endif ++ + mm->get_unmapped_area = arch_get_unmapped_area; + mm->unmap_area = arch_unmap_area; + } else { +@@ -402,6 +408,12 @@ void arch_pick_mmap_layout(struct mm_struct *mm) + gap = (task_size / 6 * 5); + + mm->mmap_base = PAGE_ALIGN(task_size - gap - random_factor); ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base -= mm->delta_mmap + mm->delta_stack; ++#endif ++ + mm->get_unmapped_area = arch_get_unmapped_area_topdown; + mm->unmap_area = arch_unmap_area_topdown; + } +diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S +index 1d7e274..b39c527 100644 +--- a/arch/sparc/kernel/syscalls.S ++++ b/arch/sparc/kernel/syscalls.S +@@ -62,7 +62,7 @@ sys32_rt_sigreturn: + #endif + .align 32 + 1: ldx [%g6 + TI_FLAGS], %l5 +- andcc %l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0 ++ andcc %l5, _TIF_WORK_SYSCALL, %g0 + be,pt %icc, rtrap + nop + call syscall_trace_leave +@@ -179,7 +179,7 @@ linux_sparc_syscall32: + + srl %i5, 0, %o5 ! IEU1 + srl %i2, 0, %o2 ! IEU0 Group +- andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0 ++ andcc %l0, _TIF_WORK_SYSCALL, %g0 + bne,pn %icc, linux_syscall_trace32 ! CTI + mov %i0, %l5 ! IEU1 + call %l7 ! CTI Group brk forced +@@ -202,7 +202,7 @@ linux_sparc_syscall: + + mov %i3, %o3 ! IEU1 + mov %i4, %o4 ! IEU0 Group +- andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0 ++ andcc %l0, _TIF_WORK_SYSCALL, %g0 + bne,pn %icc, linux_syscall_trace ! CTI Group + mov %i0, %l5 ! IEU0 + 2: call %l7 ! CTI Group brk forced +@@ -226,7 +226,7 @@ ret_sys_call: + + cmp %o0, -ERESTART_RESTARTBLOCK + bgeu,pn %xcc, 1f +- andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %l6 ++ andcc %l0, _TIF_WORK_SYSCALL, %l6 + 80: + /* System call success, clear Carry condition code. */ + andn %g3, %g2, %g3 +@@ -241,7 +241,7 @@ ret_sys_call: + /* System call failure, set Carry condition code. + * Also, get abs(errno) to return to the process. + */ +- andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %l6 ++ andcc %l0, _TIF_WORK_SYSCALL, %l6 + sub %g0, %o0, %o0 + or %g3, %g2, %g3 + stx %o0, [%sp + PTREGS_OFF + PT_V9_I0] +diff --git a/arch/sparc/kernel/traps_32.c b/arch/sparc/kernel/traps_32.c +index d2de213..6b22bc3 100644 +--- a/arch/sparc/kernel/traps_32.c ++++ b/arch/sparc/kernel/traps_32.c +@@ -44,6 +44,8 @@ static void instruction_dump(unsigned long *pc) + #define __SAVE __asm__ __volatile__("save %sp, -0x40, %sp\n\t") + #define __RESTORE __asm__ __volatile__("restore %g0, %g0, %g0\n\t") + ++extern void gr_handle_kernel_exploit(void); ++ + void die_if_kernel(char *str, struct pt_regs *regs) + { + static int die_counter; +@@ -76,15 +78,17 @@ void die_if_kernel(char *str, struct pt_regs *regs) + count++ < 30 && + (((unsigned long) rw) >= PAGE_OFFSET) && + !(((unsigned long) rw) & 0x7)) { +- printk("Caller[%08lx]: %pS\n", rw->ins[7], ++ printk("Caller[%08lx]: %pA\n", rw->ins[7], + (void *) rw->ins[7]); + rw = (struct reg_window32 *)rw->ins[6]; + } + } + printk("Instruction DUMP:"); + instruction_dump ((unsigned long *) regs->pc); +- if(regs->psr & PSR_PS) ++ if(regs->psr & PSR_PS) { ++ gr_handle_kernel_exploit(); + do_exit(SIGKILL); ++ } + do_exit(SIGSEGV); + } + +diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c +index c72fdf5..743a344 100644 +--- a/arch/sparc/kernel/traps_64.c ++++ b/arch/sparc/kernel/traps_64.c +@@ -75,7 +75,7 @@ static void dump_tl1_traplog(struct tl1_traplog *p) + i + 1, + p->trapstack[i].tstate, p->trapstack[i].tpc, + p->trapstack[i].tnpc, p->trapstack[i].tt); +- printk("TRAPLOG: TPC<%pS>\n", (void *) p->trapstack[i].tpc); ++ printk("TRAPLOG: TPC<%pA>\n", (void *) p->trapstack[i].tpc); + } + } + +@@ -95,6 +95,12 @@ void bad_trap(struct pt_regs *regs, long lvl) + + lvl -= 0x100; + if (regs->tstate & TSTATE_PRIV) { ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ if (lvl == 6) ++ pax_report_refcount_overflow(regs); ++#endif ++ + sprintf(buffer, "Kernel bad sw trap %lx", lvl); + die_if_kernel(buffer, regs); + } +@@ -113,11 +119,16 @@ void bad_trap(struct pt_regs *regs, long lvl) + void bad_trap_tl1(struct pt_regs *regs, long lvl) + { + char buffer[32]; +- ++ + if (notify_die(DIE_TRAP_TL1, "bad trap tl1", regs, + 0, lvl, SIGTRAP) == NOTIFY_STOP) + return; + ++#ifdef CONFIG_PAX_REFCOUNT ++ if (lvl == 6) ++ pax_report_refcount_overflow(regs); ++#endif ++ + dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); + + sprintf (buffer, "Bad trap %lx at tl>0", lvl); +@@ -1141,7 +1152,7 @@ static void cheetah_log_errors(struct pt_regs *regs, struct cheetah_err_info *in + regs->tpc, regs->tnpc, regs->u_regs[UREG_I7], regs->tstate); + printk("%s" "ERROR(%d): ", + (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id()); +- printk("TPC<%pS>\n", (void *) regs->tpc); ++ printk("TPC<%pA>\n", (void *) regs->tpc); + printk("%s" "ERROR(%d): M_SYND(%lx), E_SYND(%lx)%s%s\n", + (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(), + (afsr & CHAFSR_M_SYNDROME) >> CHAFSR_M_SYNDROME_SHIFT, +@@ -1748,7 +1759,7 @@ void cheetah_plus_parity_error(int type, struct pt_regs *regs) + smp_processor_id(), + (type & 0x1) ? 'I' : 'D', + regs->tpc); +- printk(KERN_EMERG "TPC<%pS>\n", (void *) regs->tpc); ++ printk(KERN_EMERG "TPC<%pA>\n", (void *) regs->tpc); + panic("Irrecoverable Cheetah+ parity error."); + } + +@@ -1756,7 +1767,7 @@ void cheetah_plus_parity_error(int type, struct pt_regs *regs) + smp_processor_id(), + (type & 0x1) ? 'I' : 'D', + regs->tpc); +- printk(KERN_WARNING "TPC<%pS>\n", (void *) regs->tpc); ++ printk(KERN_WARNING "TPC<%pA>\n", (void *) regs->tpc); + } + + struct sun4v_error_entry { +@@ -1963,9 +1974,9 @@ void sun4v_itlb_error_report(struct pt_regs *regs, int tl) + + printk(KERN_EMERG "SUN4V-ITLB: Error at TPC[%lx], tl %d\n", + regs->tpc, tl); +- printk(KERN_EMERG "SUN4V-ITLB: TPC<%pS>\n", (void *) regs->tpc); ++ printk(KERN_EMERG "SUN4V-ITLB: TPC<%pA>\n", (void *) regs->tpc); + printk(KERN_EMERG "SUN4V-ITLB: O7[%lx]\n", regs->u_regs[UREG_I7]); +- printk(KERN_EMERG "SUN4V-ITLB: O7<%pS>\n", ++ printk(KERN_EMERG "SUN4V-ITLB: O7<%pA>\n", + (void *) regs->u_regs[UREG_I7]); + printk(KERN_EMERG "SUN4V-ITLB: vaddr[%lx] ctx[%lx] " + "pte[%lx] error[%lx]\n", +@@ -1987,9 +1998,9 @@ void sun4v_dtlb_error_report(struct pt_regs *regs, int tl) + + printk(KERN_EMERG "SUN4V-DTLB: Error at TPC[%lx], tl %d\n", + regs->tpc, tl); +- printk(KERN_EMERG "SUN4V-DTLB: TPC<%pS>\n", (void *) regs->tpc); ++ printk(KERN_EMERG "SUN4V-DTLB: TPC<%pA>\n", (void *) regs->tpc); + printk(KERN_EMERG "SUN4V-DTLB: O7[%lx]\n", regs->u_regs[UREG_I7]); +- printk(KERN_EMERG "SUN4V-DTLB: O7<%pS>\n", ++ printk(KERN_EMERG "SUN4V-DTLB: O7<%pA>\n", + (void *) regs->u_regs[UREG_I7]); + printk(KERN_EMERG "SUN4V-DTLB: vaddr[%lx] ctx[%lx] " + "pte[%lx] error[%lx]\n", +@@ -2195,13 +2206,13 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp) + fp = (unsigned long)sf->fp + STACK_BIAS; + } + +- printk(" [%016lx] %pS\n", pc, (void *) pc); ++ printk(" [%016lx] %pA\n", pc, (void *) pc); + #ifdef CONFIG_FUNCTION_GRAPH_TRACER + if ((pc + 8UL) == (unsigned long) &return_to_handler) { + int index = tsk->curr_ret_stack; + if (tsk->ret_stack && index >= graph) { + pc = tsk->ret_stack[index - graph].ret; +- printk(" [%016lx] %pS\n", pc, (void *) pc); ++ printk(" [%016lx] %pA\n", pc, (void *) pc); + graph++; + } + } +@@ -2226,6 +2237,8 @@ static inline struct reg_window *kernel_stack_up(struct reg_window *rw) + return (struct reg_window *) (fp + STACK_BIAS); + } + ++extern void gr_handle_kernel_exploit(void); ++ + void die_if_kernel(char *str, struct pt_regs *regs) + { + static int die_counter; +@@ -2254,7 +2267,7 @@ void die_if_kernel(char *str, struct pt_regs *regs) + while (rw && + count++ < 30 && + kstack_valid(tp, (unsigned long) rw)) { +- printk("Caller[%016lx]: %pS\n", rw->ins[7], ++ printk("Caller[%016lx]: %pA\n", rw->ins[7], + (void *) rw->ins[7]); + + rw = kernel_stack_up(rw); +@@ -2267,8 +2280,10 @@ void die_if_kernel(char *str, struct pt_regs *regs) + } + user_instruction_dump ((unsigned int __user *) regs->tpc); + } +- if (regs->tstate & TSTATE_PRIV) ++ if (regs->tstate & TSTATE_PRIV) { ++ gr_handle_kernel_exploit(); + do_exit(SIGKILL); ++ } + do_exit(SIGSEGV); + } + EXPORT_SYMBOL(die_if_kernel); +diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c +index dae85bc..af1e19d 100644 +--- a/arch/sparc/kernel/unaligned_64.c ++++ b/arch/sparc/kernel/unaligned_64.c +@@ -279,7 +279,7 @@ static void log_unaligned(struct pt_regs *regs) + static DEFINE_RATELIMIT_STATE(ratelimit, 5 * HZ, 5); + + if (__ratelimit(&ratelimit)) { +- printk("Kernel unaligned access at TPC[%lx] %pS\n", ++ printk("Kernel unaligned access at TPC[%lx] %pA\n", + regs->tpc, (void *) regs->tpc); + } + } +diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile +index a3fc437..fea9957 100644 +--- a/arch/sparc/lib/Makefile ++++ b/arch/sparc/lib/Makefile +@@ -2,7 +2,7 @@ + # + + asflags-y := -ansi -DST_DIV0=0x02 +-ccflags-y := -Werror ++#ccflags-y := -Werror + + lib-$(CONFIG_SPARC32) += mul.o rem.o sdiv.o udiv.o umul.o urem.o ashrdi3.o + lib-$(CONFIG_SPARC32) += memcpy.o memset.o +diff --git a/arch/sparc/lib/atomic_64.S b/arch/sparc/lib/atomic_64.S +index 59186e0..f747d7a 100644 +--- a/arch/sparc/lib/atomic_64.S ++++ b/arch/sparc/lib/atomic_64.S +@@ -18,7 +18,12 @@ + atomic_add: /* %o0 = increment, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) + 1: lduw [%o1], %g1 +- add %g1, %o0, %g7 ++ addcc %g1, %o0, %g7 ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ tvs %icc, 6 ++#endif ++ + cas [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %icc, BACKOFF_LABEL(2f, 1b) +@@ -28,12 +33,32 @@ atomic_add: /* %o0 = increment, %o1 = atomic_ptr */ + 2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic_add, .-atomic_add + ++ .globl atomic_add_unchecked ++ .type atomic_add_unchecked,#function ++atomic_add_unchecked: /* %o0 = increment, %o1 = atomic_ptr */ ++ BACKOFF_SETUP(%o2) ++1: lduw [%o1], %g1 ++ add %g1, %o0, %g7 ++ cas [%o1], %g1, %g7 ++ cmp %g1, %g7 ++ bne,pn %icc, 2f ++ nop ++ retl ++ nop ++2: BACKOFF_SPIN(%o2, %o3, 1b) ++ .size atomic_add_unchecked, .-atomic_add_unchecked ++ + .globl atomic_sub + .type atomic_sub,#function + atomic_sub: /* %o0 = decrement, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) + 1: lduw [%o1], %g1 +- sub %g1, %o0, %g7 ++ subcc %g1, %o0, %g7 ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ tvs %icc, 6 ++#endif ++ + cas [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %icc, BACKOFF_LABEL(2f, 1b) +@@ -43,12 +68,32 @@ atomic_sub: /* %o0 = decrement, %o1 = atomic_ptr */ + 2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic_sub, .-atomic_sub + ++ .globl atomic_sub_unchecked ++ .type atomic_sub_unchecked,#function ++atomic_sub_unchecked: /* %o0 = decrement, %o1 = atomic_ptr */ ++ BACKOFF_SETUP(%o2) ++1: lduw [%o1], %g1 ++ sub %g1, %o0, %g7 ++ cas [%o1], %g1, %g7 ++ cmp %g1, %g7 ++ bne,pn %icc, 2f ++ nop ++ retl ++ nop ++2: BACKOFF_SPIN(%o2, %o3, 1b) ++ .size atomic_sub_unchecked, .-atomic_sub_unchecked ++ + .globl atomic_add_ret + .type atomic_add_ret,#function + atomic_add_ret: /* %o0 = increment, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) + 1: lduw [%o1], %g1 +- add %g1, %o0, %g7 ++ addcc %g1, %o0, %g7 ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ tvs %icc, 6 ++#endif ++ + cas [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %icc, BACKOFF_LABEL(2f, 1b) +@@ -58,12 +103,33 @@ atomic_add_ret: /* %o0 = increment, %o1 = atomic_ptr */ + 2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic_add_ret, .-atomic_add_ret + ++ .globl atomic_add_ret_unchecked ++ .type atomic_add_ret_unchecked,#function ++atomic_add_ret_unchecked: /* %o0 = increment, %o1 = atomic_ptr */ ++ BACKOFF_SETUP(%o2) ++1: lduw [%o1], %g1 ++ addcc %g1, %o0, %g7 ++ cas [%o1], %g1, %g7 ++ cmp %g1, %g7 ++ bne,pn %icc, 2f ++ add %g7, %o0, %g7 ++ sra %g7, 0, %o0 ++ retl ++ nop ++2: BACKOFF_SPIN(%o2, %o3, 1b) ++ .size atomic_add_ret_unchecked, .-atomic_add_ret_unchecked ++ + .globl atomic_sub_ret + .type atomic_sub_ret,#function + atomic_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) + 1: lduw [%o1], %g1 +- sub %g1, %o0, %g7 ++ subcc %g1, %o0, %g7 ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ tvs %icc, 6 ++#endif ++ + cas [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %icc, BACKOFF_LABEL(2f, 1b) +@@ -78,7 +144,12 @@ atomic_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */ + atomic64_add: /* %o0 = increment, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) + 1: ldx [%o1], %g1 +- add %g1, %o0, %g7 ++ addcc %g1, %o0, %g7 ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ tvs %xcc, 6 ++#endif ++ + casx [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %xcc, BACKOFF_LABEL(2f, 1b) +@@ -88,12 +159,32 @@ atomic64_add: /* %o0 = increment, %o1 = atomic_ptr */ + 2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic64_add, .-atomic64_add + ++ .globl atomic64_add_unchecked ++ .type atomic64_add_unchecked,#function ++atomic64_add_unchecked: /* %o0 = increment, %o1 = atomic_ptr */ ++ BACKOFF_SETUP(%o2) ++1: ldx [%o1], %g1 ++ addcc %g1, %o0, %g7 ++ casx [%o1], %g1, %g7 ++ cmp %g1, %g7 ++ bne,pn %xcc, 2f ++ nop ++ retl ++ nop ++2: BACKOFF_SPIN(%o2, %o3, 1b) ++ .size atomic64_add_unchecked, .-atomic64_add_unchecked ++ + .globl atomic64_sub + .type atomic64_sub,#function + atomic64_sub: /* %o0 = decrement, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) + 1: ldx [%o1], %g1 +- sub %g1, %o0, %g7 ++ subcc %g1, %o0, %g7 ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ tvs %xcc, 6 ++#endif ++ + casx [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %xcc, BACKOFF_LABEL(2f, 1b) +@@ -103,12 +194,32 @@ atomic64_sub: /* %o0 = decrement, %o1 = atomic_ptr */ + 2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic64_sub, .-atomic64_sub + ++ .globl atomic64_sub_unchecked ++ .type atomic64_sub_unchecked,#function ++atomic64_sub_unchecked: /* %o0 = decrement, %o1 = atomic_ptr */ ++ BACKOFF_SETUP(%o2) ++1: ldx [%o1], %g1 ++ subcc %g1, %o0, %g7 ++ casx [%o1], %g1, %g7 ++ cmp %g1, %g7 ++ bne,pn %xcc, 2f ++ nop ++ retl ++ nop ++2: BACKOFF_SPIN(%o2, %o3, 1b) ++ .size atomic64_sub_unchecked, .-atomic64_sub_unchecked ++ + .globl atomic64_add_ret + .type atomic64_add_ret,#function + atomic64_add_ret: /* %o0 = increment, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) + 1: ldx [%o1], %g1 +- add %g1, %o0, %g7 ++ addcc %g1, %o0, %g7 ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ tvs %xcc, 6 ++#endif ++ + casx [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %xcc, BACKOFF_LABEL(2f, 1b) +@@ -118,12 +229,33 @@ atomic64_add_ret: /* %o0 = increment, %o1 = atomic_ptr */ + 2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic64_add_ret, .-atomic64_add_ret + ++ .globl atomic64_add_ret_unchecked ++ .type atomic64_add_ret_unchecked,#function ++atomic64_add_ret_unchecked: /* %o0 = increment, %o1 = atomic_ptr */ ++ BACKOFF_SETUP(%o2) ++1: ldx [%o1], %g1 ++ addcc %g1, %o0, %g7 ++ casx [%o1], %g1, %g7 ++ cmp %g1, %g7 ++ bne,pn %xcc, 2f ++ add %g7, %o0, %g7 ++ mov %g7, %o0 ++ retl ++ nop ++2: BACKOFF_SPIN(%o2, %o3, 1b) ++ .size atomic64_add_ret_unchecked, .-atomic64_add_ret_unchecked ++ + .globl atomic64_sub_ret + .type atomic64_sub_ret,#function + atomic64_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) + 1: ldx [%o1], %g1 +- sub %g1, %o0, %g7 ++ subcc %g1, %o0, %g7 ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ tvs %xcc, 6 ++#endif ++ + casx [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %xcc, BACKOFF_LABEL(2f, 1b) +diff --git a/arch/sparc/lib/ksyms.c b/arch/sparc/lib/ksyms.c +index f73c224..662af10 100644 +--- a/arch/sparc/lib/ksyms.c ++++ b/arch/sparc/lib/ksyms.c +@@ -136,12 +136,18 @@ EXPORT_SYMBOL(__downgrade_write); + + /* Atomic counter implementation. */ + EXPORT_SYMBOL(atomic_add); ++EXPORT_SYMBOL(atomic_add_unchecked); + EXPORT_SYMBOL(atomic_add_ret); ++EXPORT_SYMBOL(atomic_add_ret_unchecked); + EXPORT_SYMBOL(atomic_sub); ++EXPORT_SYMBOL(atomic_sub_unchecked); + EXPORT_SYMBOL(atomic_sub_ret); + EXPORT_SYMBOL(atomic64_add); ++EXPORT_SYMBOL(atomic64_add_unchecked); + EXPORT_SYMBOL(atomic64_add_ret); ++EXPORT_SYMBOL(atomic64_add_ret_unchecked); + EXPORT_SYMBOL(atomic64_sub); ++EXPORT_SYMBOL(atomic64_sub_unchecked); + EXPORT_SYMBOL(atomic64_sub_ret); + + /* Atomic bit operations. */ +diff --git a/arch/sparc/mm/Makefile b/arch/sparc/mm/Makefile +index 301421c..e2535d1 100644 +--- a/arch/sparc/mm/Makefile ++++ b/arch/sparc/mm/Makefile +@@ -2,7 +2,7 @@ + # + + asflags-y := -ansi +-ccflags-y := -Werror ++#ccflags-y := -Werror + + obj-$(CONFIG_SPARC64) += ultra.o tlb.o tsb.o gup.o + obj-y += fault_$(BITS).o +diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c +index df3155a..eb708b8 100644 +--- a/arch/sparc/mm/fault_32.c ++++ b/arch/sparc/mm/fault_32.c +@@ -21,6 +21,9 @@ + #include <linux/perf_event.h> + #include <linux/interrupt.h> + #include <linux/kdebug.h> ++#include <linux/slab.h> ++#include <linux/pagemap.h> ++#include <linux/compiler.h> + + #include <asm/page.h> + #include <asm/pgtable.h> +@@ -207,6 +210,268 @@ static unsigned long compute_si_addr(struct pt_regs *regs, int text_fault) + return safe_compute_effective_address(regs, insn); + } + ++#ifdef CONFIG_PAX_PAGEEXEC ++#ifdef CONFIG_PAX_DLRESOLVE ++static void pax_emuplt_close(struct vm_area_struct *vma) ++{ ++ vma->vm_mm->call_dl_resolve = 0UL; ++} ++ ++static int pax_emuplt_fault(struct vm_area_struct *vma, struct vm_fault *vmf) ++{ ++ unsigned int *kaddr; ++ ++ vmf->page = alloc_page(GFP_HIGHUSER); ++ if (!vmf->page) ++ return VM_FAULT_OOM; ++ ++ kaddr = kmap(vmf->page); ++ memset(kaddr, 0, PAGE_SIZE); ++ kaddr[0] = 0x9DE3BFA8U; /* save */ ++ flush_dcache_page(vmf->page); ++ kunmap(vmf->page); ++ return VM_FAULT_MAJOR; ++} ++ ++static const struct vm_operations_struct pax_vm_ops = { ++ .close = pax_emuplt_close, ++ .fault = pax_emuplt_fault ++}; ++ ++static int pax_insert_vma(struct vm_area_struct *vma, unsigned long addr) ++{ ++ int ret; ++ ++ INIT_LIST_HEAD(&vma->anon_vma_chain); ++ vma->vm_mm = current->mm; ++ vma->vm_start = addr; ++ vma->vm_end = addr + PAGE_SIZE; ++ vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC; ++ vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); ++ vma->vm_ops = &pax_vm_ops; ++ ++ ret = insert_vm_struct(current->mm, vma); ++ if (ret) ++ return ret; ++ ++ ++current->mm->total_vm; ++ return 0; ++} ++#endif ++ ++/* ++ * PaX: decide what to do with offenders (regs->pc = fault address) ++ * ++ * returns 1 when task should be killed ++ * 2 when patched PLT trampoline was detected ++ * 3 when unpatched PLT trampoline was detected ++ */ ++static int pax_handle_fetch_fault(struct pt_regs *regs) ++{ ++ ++#ifdef CONFIG_PAX_EMUPLT ++ int err; ++ ++ do { /* PaX: patched PLT emulation #1 */ ++ unsigned int sethi1, sethi2, jmpl; ++ ++ err = get_user(sethi1, (unsigned int *)regs->pc); ++ err |= get_user(sethi2, (unsigned int *)(regs->pc+4)); ++ err |= get_user(jmpl, (unsigned int *)(regs->pc+8)); ++ ++ if (err) ++ break; ++ ++ if ((sethi1 & 0xFFC00000U) == 0x03000000U && ++ (sethi2 & 0xFFC00000U) == 0x03000000U && ++ (jmpl & 0xFFFFE000U) == 0x81C06000U) ++ { ++ unsigned int addr; ++ ++ regs->u_regs[UREG_G1] = (sethi2 & 0x003FFFFFU) << 10; ++ addr = regs->u_regs[UREG_G1]; ++ addr += (((jmpl | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U); ++ regs->pc = addr; ++ regs->npc = addr+4; ++ return 2; ++ } ++ } while (0); ++ ++ { /* PaX: patched PLT emulation #2 */ ++ unsigned int ba; ++ ++ err = get_user(ba, (unsigned int *)regs->pc); ++ ++ if (!err && (ba & 0xFFC00000U) == 0x30800000U) { ++ unsigned int addr; ++ ++ addr = regs->pc + ((((ba | 0xFFC00000U) ^ 0x00200000U) + 0x00200000U) << 2); ++ regs->pc = addr; ++ regs->npc = addr+4; ++ return 2; ++ } ++ } ++ ++ do { /* PaX: patched PLT emulation #3 */ ++ unsigned int sethi, jmpl, nop; ++ ++ err = get_user(sethi, (unsigned int *)regs->pc); ++ err |= get_user(jmpl, (unsigned int *)(regs->pc+4)); ++ err |= get_user(nop, (unsigned int *)(regs->pc+8)); ++ ++ if (err) ++ break; ++ ++ if ((sethi & 0xFFC00000U) == 0x03000000U && ++ (jmpl & 0xFFFFE000U) == 0x81C06000U && ++ nop == 0x01000000U) ++ { ++ unsigned int addr; ++ ++ addr = (sethi & 0x003FFFFFU) << 10; ++ regs->u_regs[UREG_G1] = addr; ++ addr += (((jmpl | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U); ++ regs->pc = addr; ++ regs->npc = addr+4; ++ return 2; ++ } ++ } while (0); ++ ++ do { /* PaX: unpatched PLT emulation step 1 */ ++ unsigned int sethi, ba, nop; ++ ++ err = get_user(sethi, (unsigned int *)regs->pc); ++ err |= get_user(ba, (unsigned int *)(regs->pc+4)); ++ err |= get_user(nop, (unsigned int *)(regs->pc+8)); ++ ++ if (err) ++ break; ++ ++ if ((sethi & 0xFFC00000U) == 0x03000000U && ++ ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30680000U) && ++ nop == 0x01000000U) ++ { ++ unsigned int addr, save, call; ++ ++ if ((ba & 0xFFC00000U) == 0x30800000U) ++ addr = regs->pc + 4 + ((((ba | 0xFFC00000U) ^ 0x00200000U) + 0x00200000U) << 2); ++ else ++ addr = regs->pc + 4 + ((((ba | 0xFFF80000U) ^ 0x00040000U) + 0x00040000U) << 2); ++ ++ err = get_user(save, (unsigned int *)addr); ++ err |= get_user(call, (unsigned int *)(addr+4)); ++ err |= get_user(nop, (unsigned int *)(addr+8)); ++ if (err) ++ break; ++ ++#ifdef CONFIG_PAX_DLRESOLVE ++ if (save == 0x9DE3BFA8U && ++ (call & 0xC0000000U) == 0x40000000U && ++ nop == 0x01000000U) ++ { ++ struct vm_area_struct *vma; ++ unsigned long call_dl_resolve; ++ ++ down_read(¤t->mm->mmap_sem); ++ call_dl_resolve = current->mm->call_dl_resolve; ++ up_read(¤t->mm->mmap_sem); ++ if (likely(call_dl_resolve)) ++ goto emulate; ++ ++ vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); ++ ++ down_write(¤t->mm->mmap_sem); ++ if (current->mm->call_dl_resolve) { ++ call_dl_resolve = current->mm->call_dl_resolve; ++ up_write(¤t->mm->mmap_sem); ++ if (vma) ++ kmem_cache_free(vm_area_cachep, vma); ++ goto emulate; ++ } ++ ++ call_dl_resolve = get_unmapped_area(NULL, 0UL, PAGE_SIZE, 0UL, MAP_PRIVATE); ++ if (!vma || (call_dl_resolve & ~PAGE_MASK)) { ++ up_write(¤t->mm->mmap_sem); ++ if (vma) ++ kmem_cache_free(vm_area_cachep, vma); ++ return 1; ++ } ++ ++ if (pax_insert_vma(vma, call_dl_resolve)) { ++ up_write(¤t->mm->mmap_sem); ++ kmem_cache_free(vm_area_cachep, vma); ++ return 1; ++ } ++ ++ current->mm->call_dl_resolve = call_dl_resolve; ++ up_write(¤t->mm->mmap_sem); ++ ++emulate: ++ regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; ++ regs->pc = call_dl_resolve; ++ regs->npc = addr+4; ++ return 3; ++ } ++#endif ++ ++ /* PaX: glibc 2.4+ generates sethi/jmpl instead of save/call */ ++ if ((save & 0xFFC00000U) == 0x05000000U && ++ (call & 0xFFFFE000U) == 0x85C0A000U && ++ nop == 0x01000000U) ++ { ++ regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; ++ regs->u_regs[UREG_G2] = addr + 4; ++ addr = (save & 0x003FFFFFU) << 10; ++ addr += (((call | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U); ++ regs->pc = addr; ++ regs->npc = addr+4; ++ return 3; ++ } ++ } ++ } while (0); ++ ++ do { /* PaX: unpatched PLT emulation step 2 */ ++ unsigned int save, call, nop; ++ ++ err = get_user(save, (unsigned int *)(regs->pc-4)); ++ err |= get_user(call, (unsigned int *)regs->pc); ++ err |= get_user(nop, (unsigned int *)(regs->pc+4)); ++ if (err) ++ break; ++ ++ if (save == 0x9DE3BFA8U && ++ (call & 0xC0000000U) == 0x40000000U && ++ nop == 0x01000000U) ++ { ++ unsigned int dl_resolve = regs->pc + ((((call | 0xC0000000U) ^ 0x20000000U) + 0x20000000U) << 2); ++ ++ regs->u_regs[UREG_RETPC] = regs->pc; ++ regs->pc = dl_resolve; ++ regs->npc = dl_resolve+4; ++ return 3; ++ } ++ } while (0); ++#endif ++ ++ return 1; ++} ++ ++void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) ++{ ++ unsigned long i; ++ ++ printk(KERN_ERR "PAX: bytes at PC: "); ++ for (i = 0; i < 8; i++) { ++ unsigned int c; ++ if (get_user(c, (unsigned int *)pc+i)) ++ printk(KERN_CONT "???????? "); ++ else ++ printk(KERN_CONT "%08x ", c); ++ } ++ printk("\n"); ++} ++#endif ++ + static noinline void do_fault_siginfo(int code, int sig, struct pt_regs *regs, + int text_fault) + { +@@ -282,6 +547,24 @@ good_area: + if(!(vma->vm_flags & VM_WRITE)) + goto bad_area; + } else { ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ if ((mm->pax_flags & MF_PAX_PAGEEXEC) && text_fault && !(vma->vm_flags & VM_EXEC)) { ++ up_read(&mm->mmap_sem); ++ switch (pax_handle_fetch_fault(regs)) { ++ ++#ifdef CONFIG_PAX_EMUPLT ++ case 2: ++ case 3: ++ return; ++#endif ++ ++ } ++ pax_report_fault(regs, (void *)regs->pc, (void *)regs->u_regs[UREG_FP]); ++ do_group_exit(SIGKILL); ++ } ++#endif ++ + /* Allow reads even for write-only mappings */ + if(!(vma->vm_flags & (VM_READ | VM_EXEC))) + goto bad_area; +diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c +index 1fe0429..aee2e87 100644 +--- a/arch/sparc/mm/fault_64.c ++++ b/arch/sparc/mm/fault_64.c +@@ -21,6 +21,9 @@ + #include <linux/kprobes.h> + #include <linux/kdebug.h> + #include <linux/percpu.h> ++#include <linux/slab.h> ++#include <linux/pagemap.h> ++#include <linux/compiler.h> + + #include <asm/page.h> + #include <asm/pgtable.h> +@@ -74,7 +77,7 @@ static void __kprobes bad_kernel_pc(struct pt_regs *regs, unsigned long vaddr) + printk(KERN_CRIT "OOPS: Bogus kernel PC [%016lx] in fault handler\n", + regs->tpc); + printk(KERN_CRIT "OOPS: RPC [%016lx]\n", regs->u_regs[15]); +- printk("OOPS: RPC <%pS>\n", (void *) regs->u_regs[15]); ++ printk("OOPS: RPC <%pA>\n", (void *) regs->u_regs[15]); + printk(KERN_CRIT "OOPS: Fault was to vaddr[%lx]\n", vaddr); + dump_stack(); + unhandled_fault(regs->tpc, current, regs); +@@ -272,6 +275,457 @@ static void noinline __kprobes bogus_32bit_fault_address(struct pt_regs *regs, + show_regs(regs); + } + ++#ifdef CONFIG_PAX_PAGEEXEC ++#ifdef CONFIG_PAX_DLRESOLVE ++static void pax_emuplt_close(struct vm_area_struct *vma) ++{ ++ vma->vm_mm->call_dl_resolve = 0UL; ++} ++ ++static int pax_emuplt_fault(struct vm_area_struct *vma, struct vm_fault *vmf) ++{ ++ unsigned int *kaddr; ++ ++ vmf->page = alloc_page(GFP_HIGHUSER); ++ if (!vmf->page) ++ return VM_FAULT_OOM; ++ ++ kaddr = kmap(vmf->page); ++ memset(kaddr, 0, PAGE_SIZE); ++ kaddr[0] = 0x9DE3BFA8U; /* save */ ++ flush_dcache_page(vmf->page); ++ kunmap(vmf->page); ++ return VM_FAULT_MAJOR; ++} ++ ++static const struct vm_operations_struct pax_vm_ops = { ++ .close = pax_emuplt_close, ++ .fault = pax_emuplt_fault ++}; ++ ++static int pax_insert_vma(struct vm_area_struct *vma, unsigned long addr) ++{ ++ int ret; ++ ++ INIT_LIST_HEAD(&vma->anon_vma_chain); ++ vma->vm_mm = current->mm; ++ vma->vm_start = addr; ++ vma->vm_end = addr + PAGE_SIZE; ++ vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC; ++ vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); ++ vma->vm_ops = &pax_vm_ops; ++ ++ ret = insert_vm_struct(current->mm, vma); ++ if (ret) ++ return ret; ++ ++ ++current->mm->total_vm; ++ return 0; ++} ++#endif ++ ++/* ++ * PaX: decide what to do with offenders (regs->tpc = fault address) ++ * ++ * returns 1 when task should be killed ++ * 2 when patched PLT trampoline was detected ++ * 3 when unpatched PLT trampoline was detected ++ */ ++static int pax_handle_fetch_fault(struct pt_regs *regs) ++{ ++ ++#ifdef CONFIG_PAX_EMUPLT ++ int err; ++ ++ do { /* PaX: patched PLT emulation #1 */ ++ unsigned int sethi1, sethi2, jmpl; ++ ++ err = get_user(sethi1, (unsigned int *)regs->tpc); ++ err |= get_user(sethi2, (unsigned int *)(regs->tpc+4)); ++ err |= get_user(jmpl, (unsigned int *)(regs->tpc+8)); ++ ++ if (err) ++ break; ++ ++ if ((sethi1 & 0xFFC00000U) == 0x03000000U && ++ (sethi2 & 0xFFC00000U) == 0x03000000U && ++ (jmpl & 0xFFFFE000U) == 0x81C06000U) ++ { ++ unsigned long addr; ++ ++ regs->u_regs[UREG_G1] = (sethi2 & 0x003FFFFFU) << 10; ++ addr = regs->u_regs[UREG_G1]; ++ addr += (((jmpl | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL); ++ ++ if (test_thread_flag(TIF_32BIT)) ++ addr &= 0xFFFFFFFFUL; ++ ++ regs->tpc = addr; ++ regs->tnpc = addr+4; ++ return 2; ++ } ++ } while (0); ++ ++ { /* PaX: patched PLT emulation #2 */ ++ unsigned int ba; ++ ++ err = get_user(ba, (unsigned int *)regs->tpc); ++ ++ if (!err && (ba & 0xFFC00000U) == 0x30800000U) { ++ unsigned long addr; ++ ++ addr = regs->tpc + ((((ba | 0xFFFFFFFFFFC00000UL) ^ 0x00200000UL) + 0x00200000UL) << 2); ++ ++ if (test_thread_flag(TIF_32BIT)) ++ addr &= 0xFFFFFFFFUL; ++ ++ regs->tpc = addr; ++ regs->tnpc = addr+4; ++ return 2; ++ } ++ } ++ ++ do { /* PaX: patched PLT emulation #3 */ ++ unsigned int sethi, jmpl, nop; ++ ++ err = get_user(sethi, (unsigned int *)regs->tpc); ++ err |= get_user(jmpl, (unsigned int *)(regs->tpc+4)); ++ err |= get_user(nop, (unsigned int *)(regs->tpc+8)); ++ ++ if (err) ++ break; ++ ++ if ((sethi & 0xFFC00000U) == 0x03000000U && ++ (jmpl & 0xFFFFE000U) == 0x81C06000U && ++ nop == 0x01000000U) ++ { ++ unsigned long addr; ++ ++ addr = (sethi & 0x003FFFFFU) << 10; ++ regs->u_regs[UREG_G1] = addr; ++ addr += (((jmpl | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL); ++ ++ if (test_thread_flag(TIF_32BIT)) ++ addr &= 0xFFFFFFFFUL; ++ ++ regs->tpc = addr; ++ regs->tnpc = addr+4; ++ return 2; ++ } ++ } while (0); ++ ++ do { /* PaX: patched PLT emulation #4 */ ++ unsigned int sethi, mov1, call, mov2; ++ ++ err = get_user(sethi, (unsigned int *)regs->tpc); ++ err |= get_user(mov1, (unsigned int *)(regs->tpc+4)); ++ err |= get_user(call, (unsigned int *)(regs->tpc+8)); ++ err |= get_user(mov2, (unsigned int *)(regs->tpc+12)); ++ ++ if (err) ++ break; ++ ++ if ((sethi & 0xFFC00000U) == 0x03000000U && ++ mov1 == 0x8210000FU && ++ (call & 0xC0000000U) == 0x40000000U && ++ mov2 == 0x9E100001U) ++ { ++ unsigned long addr; ++ ++ regs->u_regs[UREG_G1] = regs->u_regs[UREG_RETPC]; ++ addr = regs->tpc + 4 + ((((call | 0xFFFFFFFFC0000000UL) ^ 0x20000000UL) + 0x20000000UL) << 2); ++ ++ if (test_thread_flag(TIF_32BIT)) ++ addr &= 0xFFFFFFFFUL; ++ ++ regs->tpc = addr; ++ regs->tnpc = addr+4; ++ return 2; ++ } ++ } while (0); ++ ++ do { /* PaX: patched PLT emulation #5 */ ++ unsigned int sethi, sethi1, sethi2, or1, or2, sllx, jmpl, nop; ++ ++ err = get_user(sethi, (unsigned int *)regs->tpc); ++ err |= get_user(sethi1, (unsigned int *)(regs->tpc+4)); ++ err |= get_user(sethi2, (unsigned int *)(regs->tpc+8)); ++ err |= get_user(or1, (unsigned int *)(regs->tpc+12)); ++ err |= get_user(or2, (unsigned int *)(regs->tpc+16)); ++ err |= get_user(sllx, (unsigned int *)(regs->tpc+20)); ++ err |= get_user(jmpl, (unsigned int *)(regs->tpc+24)); ++ err |= get_user(nop, (unsigned int *)(regs->tpc+28)); ++ ++ if (err) ++ break; ++ ++ if ((sethi & 0xFFC00000U) == 0x03000000U && ++ (sethi1 & 0xFFC00000U) == 0x03000000U && ++ (sethi2 & 0xFFC00000U) == 0x0B000000U && ++ (or1 & 0xFFFFE000U) == 0x82106000U && ++ (or2 & 0xFFFFE000U) == 0x8A116000U && ++ sllx == 0x83287020U && ++ jmpl == 0x81C04005U && ++ nop == 0x01000000U) ++ { ++ unsigned long addr; ++ ++ regs->u_regs[UREG_G1] = ((sethi1 & 0x003FFFFFU) << 10) | (or1 & 0x000003FFU); ++ regs->u_regs[UREG_G1] <<= 32; ++ regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or2 & 0x000003FFU); ++ addr = regs->u_regs[UREG_G1] + regs->u_regs[UREG_G5]; ++ regs->tpc = addr; ++ regs->tnpc = addr+4; ++ return 2; ++ } ++ } while (0); ++ ++ do { /* PaX: patched PLT emulation #6 */ ++ unsigned int sethi, sethi1, sethi2, sllx, or, jmpl, nop; ++ ++ err = get_user(sethi, (unsigned int *)regs->tpc); ++ err |= get_user(sethi1, (unsigned int *)(regs->tpc+4)); ++ err |= get_user(sethi2, (unsigned int *)(regs->tpc+8)); ++ err |= get_user(sllx, (unsigned int *)(regs->tpc+12)); ++ err |= get_user(or, (unsigned int *)(regs->tpc+16)); ++ err |= get_user(jmpl, (unsigned int *)(regs->tpc+20)); ++ err |= get_user(nop, (unsigned int *)(regs->tpc+24)); ++ ++ if (err) ++ break; ++ ++ if ((sethi & 0xFFC00000U) == 0x03000000U && ++ (sethi1 & 0xFFC00000U) == 0x03000000U && ++ (sethi2 & 0xFFC00000U) == 0x0B000000U && ++ sllx == 0x83287020U && ++ (or & 0xFFFFE000U) == 0x8A116000U && ++ jmpl == 0x81C04005U && ++ nop == 0x01000000U) ++ { ++ unsigned long addr; ++ ++ regs->u_regs[UREG_G1] = (sethi1 & 0x003FFFFFU) << 10; ++ regs->u_regs[UREG_G1] <<= 32; ++ regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or & 0x3FFU); ++ addr = regs->u_regs[UREG_G1] + regs->u_regs[UREG_G5]; ++ regs->tpc = addr; ++ regs->tnpc = addr+4; ++ return 2; ++ } ++ } while (0); ++ ++ do { /* PaX: unpatched PLT emulation step 1 */ ++ unsigned int sethi, ba, nop; ++ ++ err = get_user(sethi, (unsigned int *)regs->tpc); ++ err |= get_user(ba, (unsigned int *)(regs->tpc+4)); ++ err |= get_user(nop, (unsigned int *)(regs->tpc+8)); ++ ++ if (err) ++ break; ++ ++ if ((sethi & 0xFFC00000U) == 0x03000000U && ++ ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30680000U) && ++ nop == 0x01000000U) ++ { ++ unsigned long addr; ++ unsigned int save, call; ++ unsigned int sethi1, sethi2, or1, or2, sllx, add, jmpl; ++ ++ if ((ba & 0xFFC00000U) == 0x30800000U) ++ addr = regs->tpc + 4 + ((((ba | 0xFFFFFFFFFFC00000UL) ^ 0x00200000UL) + 0x00200000UL) << 2); ++ else ++ addr = regs->tpc + 4 + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2); ++ ++ if (test_thread_flag(TIF_32BIT)) ++ addr &= 0xFFFFFFFFUL; ++ ++ err = get_user(save, (unsigned int *)addr); ++ err |= get_user(call, (unsigned int *)(addr+4)); ++ err |= get_user(nop, (unsigned int *)(addr+8)); ++ if (err) ++ break; ++ ++#ifdef CONFIG_PAX_DLRESOLVE ++ if (save == 0x9DE3BFA8U && ++ (call & 0xC0000000U) == 0x40000000U && ++ nop == 0x01000000U) ++ { ++ struct vm_area_struct *vma; ++ unsigned long call_dl_resolve; ++ ++ down_read(¤t->mm->mmap_sem); ++ call_dl_resolve = current->mm->call_dl_resolve; ++ up_read(¤t->mm->mmap_sem); ++ if (likely(call_dl_resolve)) ++ goto emulate; ++ ++ vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); ++ ++ down_write(¤t->mm->mmap_sem); ++ if (current->mm->call_dl_resolve) { ++ call_dl_resolve = current->mm->call_dl_resolve; ++ up_write(¤t->mm->mmap_sem); ++ if (vma) ++ kmem_cache_free(vm_area_cachep, vma); ++ goto emulate; ++ } ++ ++ call_dl_resolve = get_unmapped_area(NULL, 0UL, PAGE_SIZE, 0UL, MAP_PRIVATE); ++ if (!vma || (call_dl_resolve & ~PAGE_MASK)) { ++ up_write(¤t->mm->mmap_sem); ++ if (vma) ++ kmem_cache_free(vm_area_cachep, vma); ++ return 1; ++ } ++ ++ if (pax_insert_vma(vma, call_dl_resolve)) { ++ up_write(¤t->mm->mmap_sem); ++ kmem_cache_free(vm_area_cachep, vma); ++ return 1; ++ } ++ ++ current->mm->call_dl_resolve = call_dl_resolve; ++ up_write(¤t->mm->mmap_sem); ++ ++emulate: ++ regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; ++ regs->tpc = call_dl_resolve; ++ regs->tnpc = addr+4; ++ return 3; ++ } ++#endif ++ ++ /* PaX: glibc 2.4+ generates sethi/jmpl instead of save/call */ ++ if ((save & 0xFFC00000U) == 0x05000000U && ++ (call & 0xFFFFE000U) == 0x85C0A000U && ++ nop == 0x01000000U) ++ { ++ regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; ++ regs->u_regs[UREG_G2] = addr + 4; ++ addr = (save & 0x003FFFFFU) << 10; ++ addr += (((call | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL); ++ ++ if (test_thread_flag(TIF_32BIT)) ++ addr &= 0xFFFFFFFFUL; ++ ++ regs->tpc = addr; ++ regs->tnpc = addr+4; ++ return 3; ++ } ++ ++ /* PaX: 64-bit PLT stub */ ++ err = get_user(sethi1, (unsigned int *)addr); ++ err |= get_user(sethi2, (unsigned int *)(addr+4)); ++ err |= get_user(or1, (unsigned int *)(addr+8)); ++ err |= get_user(or2, (unsigned int *)(addr+12)); ++ err |= get_user(sllx, (unsigned int *)(addr+16)); ++ err |= get_user(add, (unsigned int *)(addr+20)); ++ err |= get_user(jmpl, (unsigned int *)(addr+24)); ++ err |= get_user(nop, (unsigned int *)(addr+28)); ++ if (err) ++ break; ++ ++ if ((sethi1 & 0xFFC00000U) == 0x09000000U && ++ (sethi2 & 0xFFC00000U) == 0x0B000000U && ++ (or1 & 0xFFFFE000U) == 0x88112000U && ++ (or2 & 0xFFFFE000U) == 0x8A116000U && ++ sllx == 0x89293020U && ++ add == 0x8A010005U && ++ jmpl == 0x89C14000U && ++ nop == 0x01000000U) ++ { ++ regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; ++ regs->u_regs[UREG_G4] = ((sethi1 & 0x003FFFFFU) << 10) | (or1 & 0x000003FFU); ++ regs->u_regs[UREG_G4] <<= 32; ++ regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or2 & 0x000003FFU); ++ regs->u_regs[UREG_G5] += regs->u_regs[UREG_G4]; ++ regs->u_regs[UREG_G4] = addr + 24; ++ addr = regs->u_regs[UREG_G5]; ++ regs->tpc = addr; ++ regs->tnpc = addr+4; ++ return 3; ++ } ++ } ++ } while (0); ++ ++#ifdef CONFIG_PAX_DLRESOLVE ++ do { /* PaX: unpatched PLT emulation step 2 */ ++ unsigned int save, call, nop; ++ ++ err = get_user(save, (unsigned int *)(regs->tpc-4)); ++ err |= get_user(call, (unsigned int *)regs->tpc); ++ err |= get_user(nop, (unsigned int *)(regs->tpc+4)); ++ if (err) ++ break; ++ ++ if (save == 0x9DE3BFA8U && ++ (call & 0xC0000000U) == 0x40000000U && ++ nop == 0x01000000U) ++ { ++ unsigned long dl_resolve = regs->tpc + ((((call | 0xFFFFFFFFC0000000UL) ^ 0x20000000UL) + 0x20000000UL) << 2); ++ ++ if (test_thread_flag(TIF_32BIT)) ++ dl_resolve &= 0xFFFFFFFFUL; ++ ++ regs->u_regs[UREG_RETPC] = regs->tpc; ++ regs->tpc = dl_resolve; ++ regs->tnpc = dl_resolve+4; ++ return 3; ++ } ++ } while (0); ++#endif ++ ++ do { /* PaX: patched PLT emulation #7, must be AFTER the unpatched PLT emulation */ ++ unsigned int sethi, ba, nop; ++ ++ err = get_user(sethi, (unsigned int *)regs->tpc); ++ err |= get_user(ba, (unsigned int *)(regs->tpc+4)); ++ err |= get_user(nop, (unsigned int *)(regs->tpc+8)); ++ ++ if (err) ++ break; ++ ++ if ((sethi & 0xFFC00000U) == 0x03000000U && ++ (ba & 0xFFF00000U) == 0x30600000U && ++ nop == 0x01000000U) ++ { ++ unsigned long addr; ++ ++ addr = (sethi & 0x003FFFFFU) << 10; ++ regs->u_regs[UREG_G1] = addr; ++ addr = regs->tpc + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2); ++ ++ if (test_thread_flag(TIF_32BIT)) ++ addr &= 0xFFFFFFFFUL; ++ ++ regs->tpc = addr; ++ regs->tnpc = addr+4; ++ return 2; ++ } ++ } while (0); ++ ++#endif ++ ++ return 1; ++} ++ ++void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) ++{ ++ unsigned long i; ++ ++ printk(KERN_ERR "PAX: bytes at PC: "); ++ for (i = 0; i < 8; i++) { ++ unsigned int c; ++ if (get_user(c, (unsigned int *)pc+i)) ++ printk(KERN_CONT "???????? "); ++ else ++ printk(KERN_CONT "%08x ", c); ++ } ++ printk("\n"); ++} ++#endif ++ + asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs) + { + struct mm_struct *mm = current->mm; +@@ -343,6 +797,29 @@ retry: + if (!vma) + goto bad_area; + ++#ifdef CONFIG_PAX_PAGEEXEC ++ /* PaX: detect ITLB misses on non-exec pages */ ++ if ((mm->pax_flags & MF_PAX_PAGEEXEC) && vma->vm_start <= address && ++ !(vma->vm_flags & VM_EXEC) && (fault_code & FAULT_CODE_ITLB)) ++ { ++ if (address != regs->tpc) ++ goto good_area; ++ ++ up_read(&mm->mmap_sem); ++ switch (pax_handle_fetch_fault(regs)) { ++ ++#ifdef CONFIG_PAX_EMUPLT ++ case 2: ++ case 3: ++ return; ++#endif ++ ++ } ++ pax_report_fault(regs, (void *)regs->tpc, (void *)(regs->u_regs[UREG_FP] + STACK_BIAS)); ++ do_group_exit(SIGKILL); ++ } ++#endif ++ + /* Pure DTLB misses do not tell us whether the fault causing + * load/store/atomic was a write or not, it only says that there + * was no match. So in such a case we (carefully) read the +diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c +index 07e1453..0a7d9e9 100644 +--- a/arch/sparc/mm/hugetlbpage.c ++++ b/arch/sparc/mm/hugetlbpage.c +@@ -67,7 +67,7 @@ full_search: + } + return -ENOMEM; + } +- if (likely(!vma || addr + len <= vma->vm_start)) { ++ if (likely(check_heap_stack_gap(vma, addr, len))) { + /* + * Remember the place where we stopped the search: + */ +@@ -106,7 +106,7 @@ hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + /* make sure it can fit in the remaining address space */ + if (likely(addr > len)) { + vma = find_vma(mm, addr-len); +- if (!vma || addr <= vma->vm_start) { ++ if (check_heap_stack_gap(vma, addr - len, len)) { + /* remember the address as a hint for next time */ + return (mm->free_area_cache = addr-len); + } +@@ -115,16 +115,17 @@ hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + if (unlikely(mm->mmap_base < len)) + goto bottomup; + +- addr = (mm->mmap_base-len) & HPAGE_MASK; ++ addr = mm->mmap_base - len; + + do { ++ addr &= HPAGE_MASK; + /* + * Lookup failure means no vma is above this address, + * else if new region fits below vma->vm_start, + * return with success: + */ + vma = find_vma(mm, addr); +- if (likely(!vma || addr+len <= vma->vm_start)) { ++ if (likely(check_heap_stack_gap(vma, addr, len))) { + /* remember the address as a hint for next time */ + return (mm->free_area_cache = addr); + } +@@ -134,8 +135,8 @@ hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + mm->cached_hole_size = vma->vm_start - addr; + + /* try just below the current vma->vm_start */ +- addr = (vma->vm_start-len) & HPAGE_MASK; +- } while (likely(len < vma->vm_start)); ++ addr = skip_heap_stack_gap(vma, len); ++ } while (!IS_ERR_VALUE(addr)); + + bottomup: + /* +@@ -181,8 +182,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr, + if (addr) { + addr = ALIGN(addr, HPAGE_SIZE); + vma = find_vma(mm, addr); +- if (task_size - len >= addr && +- (!vma || addr + len <= vma->vm_start)) ++ if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) + return addr; + } + if (mm->get_unmapped_area == arch_get_unmapped_area) +diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c +index c5f9021..7591bae 100644 +--- a/arch/sparc/mm/init_32.c ++++ b/arch/sparc/mm/init_32.c +@@ -315,6 +315,9 @@ extern void device_scan(void); + pgprot_t PAGE_SHARED __read_mostly; + EXPORT_SYMBOL(PAGE_SHARED); + ++pgprot_t PAGE_SHARED_NOEXEC __read_mostly; ++EXPORT_SYMBOL(PAGE_SHARED_NOEXEC); ++ + void __init paging_init(void) + { + switch(sparc_cpu_model) { +@@ -343,17 +346,17 @@ void __init paging_init(void) + + /* Initialize the protection map with non-constant, MMU dependent values. */ + protection_map[0] = PAGE_NONE; +- protection_map[1] = PAGE_READONLY; +- protection_map[2] = PAGE_COPY; +- protection_map[3] = PAGE_COPY; ++ protection_map[1] = PAGE_READONLY_NOEXEC; ++ protection_map[2] = PAGE_COPY_NOEXEC; ++ protection_map[3] = PAGE_COPY_NOEXEC; + protection_map[4] = PAGE_READONLY; + protection_map[5] = PAGE_READONLY; + protection_map[6] = PAGE_COPY; + protection_map[7] = PAGE_COPY; + protection_map[8] = PAGE_NONE; +- protection_map[9] = PAGE_READONLY; +- protection_map[10] = PAGE_SHARED; +- protection_map[11] = PAGE_SHARED; ++ protection_map[9] = PAGE_READONLY_NOEXEC; ++ protection_map[10] = PAGE_SHARED_NOEXEC; ++ protection_map[11] = PAGE_SHARED_NOEXEC; + protection_map[12] = PAGE_READONLY; + protection_map[13] = PAGE_READONLY; + protection_map[14] = PAGE_SHARED; +diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c +index cbef74e..c38fead 100644 +--- a/arch/sparc/mm/srmmu.c ++++ b/arch/sparc/mm/srmmu.c +@@ -2200,6 +2200,13 @@ void __init ld_mmu_srmmu(void) + PAGE_SHARED = pgprot_val(SRMMU_PAGE_SHARED); + BTFIXUPSET_INT(page_copy, pgprot_val(SRMMU_PAGE_COPY)); + BTFIXUPSET_INT(page_readonly, pgprot_val(SRMMU_PAGE_RDONLY)); ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ PAGE_SHARED_NOEXEC = pgprot_val(SRMMU_PAGE_SHARED_NOEXEC); ++ BTFIXUPSET_INT(page_copy_noexec, pgprot_val(SRMMU_PAGE_COPY_NOEXEC)); ++ BTFIXUPSET_INT(page_readonly_noexec, pgprot_val(SRMMU_PAGE_RDONLY_NOEXEC)); ++#endif ++ + BTFIXUPSET_INT(page_kernel, pgprot_val(SRMMU_PAGE_KERNEL)); + page_kernel = pgprot_val(SRMMU_PAGE_KERNEL); + +diff --git a/arch/tile/include/asm/atomic_64.h b/arch/tile/include/asm/atomic_64.h +index f4500c6..889656c 100644 +--- a/arch/tile/include/asm/atomic_64.h ++++ b/arch/tile/include/asm/atomic_64.h +@@ -143,6 +143,16 @@ static inline long atomic64_add_unless(atomic64_t *v, long a, long u) + + #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) + ++#define atomic64_read_unchecked(v) atomic64_read(v) ++#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) ++#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) ++#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) ++#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) ++#define atomic64_inc_unchecked(v) atomic64_inc(v) ++#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) ++#define atomic64_dec_unchecked(v) atomic64_dec(v) ++#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) ++ + /* Atomic dec and inc don't implement barrier, so provide them if needed. */ + #define smp_mb__before_atomic_dec() smp_mb() + #define smp_mb__after_atomic_dec() smp_mb() +diff --git a/arch/tile/include/asm/cache.h b/arch/tile/include/asm/cache.h +index 392e533..536b092 100644 +--- a/arch/tile/include/asm/cache.h ++++ b/arch/tile/include/asm/cache.h +@@ -15,11 +15,12 @@ + #ifndef _ASM_TILE_CACHE_H + #define _ASM_TILE_CACHE_H + ++#include <linux/const.h> + #include <arch/chip.h> + + /* bytes per L1 data cache line */ + #define L1_CACHE_SHIFT CHIP_L1D_LOG_LINE_SIZE() +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + /* bytes per L2 cache line */ + #define L2_CACHE_SHIFT CHIP_L2_LOG_LINE_SIZE() +diff --git a/arch/tile/include/asm/uaccess.h b/arch/tile/include/asm/uaccess.h +index ef34d2c..d6ce60c 100644 +--- a/arch/tile/include/asm/uaccess.h ++++ b/arch/tile/include/asm/uaccess.h +@@ -361,9 +361,9 @@ static inline unsigned long __must_check copy_from_user(void *to, + const void __user *from, + unsigned long n) + { +- int sz = __compiletime_object_size(to); ++ size_t sz = __compiletime_object_size(to); + +- if (likely(sz == -1 || sz >= n)) ++ if (likely(sz == (size_t)-1 || sz >= n)) + n = _copy_from_user(to, from, n); + else + copy_from_user_overflow(); +diff --git a/arch/um/Makefile b/arch/um/Makefile +index 55c0661..86ad413 100644 +--- a/arch/um/Makefile ++++ b/arch/um/Makefile +@@ -62,6 +62,10 @@ USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\ + $(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \ + $(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64 -idirafter include + ++ifdef CONSTIFY_PLUGIN ++USER_CFLAGS += $(CONSTIFY_PLUGIN) -fplugin-arg-constify_plugin-no-constify ++endif ++ + #This will adjust *FLAGS accordingly to the platform. + include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS) + +diff --git a/arch/um/include/asm/cache.h b/arch/um/include/asm/cache.h +index 19e1bdd..3665b77 100644 +--- a/arch/um/include/asm/cache.h ++++ b/arch/um/include/asm/cache.h +@@ -1,6 +1,7 @@ + #ifndef __UM_CACHE_H + #define __UM_CACHE_H + ++#include <linux/const.h> + + #if defined(CONFIG_UML_X86) && !defined(CONFIG_64BIT) + # define L1_CACHE_SHIFT (CONFIG_X86_L1_CACHE_SHIFT) +@@ -12,6 +13,6 @@ + # define L1_CACHE_SHIFT 5 + #endif + +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + #endif +diff --git a/arch/um/include/asm/kmap_types.h b/arch/um/include/asm/kmap_types.h +index 6c03acd..a5e0215 100644 +--- a/arch/um/include/asm/kmap_types.h ++++ b/arch/um/include/asm/kmap_types.h +@@ -23,6 +23,7 @@ enum km_type { + KM_IRQ1, + KM_SOFTIRQ0, + KM_SOFTIRQ1, ++ KM_CLEARPAGE, + KM_TYPE_NR + }; + +diff --git a/arch/um/include/asm/page.h b/arch/um/include/asm/page.h +index 7cfc3ce..cbd1a58 100644 +--- a/arch/um/include/asm/page.h ++++ b/arch/um/include/asm/page.h +@@ -14,6 +14,9 @@ + #define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) + #define PAGE_MASK (~(PAGE_SIZE-1)) + ++#define ktla_ktva(addr) (addr) ++#define ktva_ktla(addr) (addr) ++ + #ifndef __ASSEMBLY__ + + struct page; +diff --git a/arch/um/include/asm/pgtable-3level.h b/arch/um/include/asm/pgtable-3level.h +index 0032f92..cd151e0 100644 +--- a/arch/um/include/asm/pgtable-3level.h ++++ b/arch/um/include/asm/pgtable-3level.h +@@ -58,6 +58,7 @@ + #define pud_present(x) (pud_val(x) & _PAGE_PRESENT) + #define pud_populate(mm, pud, pmd) \ + set_pud(pud, __pud(_PAGE_TABLE + __pa(pmd))) ++#define pud_populate_kernel(mm, pud, pmd) pud_populate((mm), (pud), (pmd)) + + #ifdef CONFIG_64BIT + #define set_pud(pudptr, pudval) set_64bit((u64 *) (pudptr), pud_val(pudval)) +diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c +index 2b73ded..804f540 100644 +--- a/arch/um/kernel/process.c ++++ b/arch/um/kernel/process.c +@@ -404,22 +404,6 @@ int singlestepping(void * t) + return 2; + } + +-/* +- * Only x86 and x86_64 have an arch_align_stack(). +- * All other arches have "#define arch_align_stack(x) (x)" +- * in their asm/system.h +- * As this is included in UML from asm-um/system-generic.h, +- * we can use it to behave as the subarch does. +- */ +-#ifndef arch_align_stack +-unsigned long arch_align_stack(unsigned long sp) +-{ +- if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) +- sp -= get_random_int() % 8192; +- return sp & ~0xf; +-} +-#endif +- + unsigned long get_wchan(struct task_struct *p) + { + unsigned long stack_page, sp, ip; +diff --git a/arch/unicore32/include/asm/cache.h b/arch/unicore32/include/asm/cache.h +index ad8f795..2c7eec6 100644 +--- a/arch/unicore32/include/asm/cache.h ++++ b/arch/unicore32/include/asm/cache.h +@@ -12,8 +12,10 @@ + #ifndef __UNICORE_CACHE_H__ + #define __UNICORE_CACHE_H__ + +-#define L1_CACHE_SHIFT (5) +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#include <linux/const.h> ++ ++#define L1_CACHE_SHIFT 5 ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + /* + * Memory returned by kmalloc() may be used for DMA, so we must make +diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig +index c9866b0..fe53aef 100644 +--- a/arch/x86/Kconfig ++++ b/arch/x86/Kconfig +@@ -229,7 +229,7 @@ config X86_HT + + config X86_32_LAZY_GS + def_bool y +- depends on X86_32 && !CC_STACKPROTECTOR ++ depends on X86_32 && !CC_STACKPROTECTOR && !PAX_MEMORY_UDEREF + + config ARCH_HWEIGHT_CFLAGS + string +@@ -1042,7 +1042,7 @@ choice + + config NOHIGHMEM + bool "off" +- depends on !X86_NUMAQ ++ depends on !X86_NUMAQ && !(PAX_PAGEEXEC && PAX_ENABLE_PAE) + ---help--- + Linux can use up to 64 Gigabytes of physical memory on x86 systems. + However, the address space of 32-bit x86 processors is only 4 +@@ -1079,7 +1079,7 @@ config NOHIGHMEM + + config HIGHMEM4G + bool "4GB" +- depends on !X86_NUMAQ ++ depends on !X86_NUMAQ && !(PAX_PAGEEXEC && PAX_ENABLE_PAE) + ---help--- + Select this if you have a 32-bit processor and between 1 and 4 + gigabytes of physical RAM. +@@ -1133,7 +1133,7 @@ config PAGE_OFFSET + hex + default 0xB0000000 if VMSPLIT_3G_OPT + default 0x80000000 if VMSPLIT_2G +- default 0x78000000 if VMSPLIT_2G_OPT ++ default 0x70000000 if VMSPLIT_2G_OPT + default 0x40000000 if VMSPLIT_1G + default 0xC0000000 + depends on X86_32 +@@ -1523,6 +1523,7 @@ config SECCOMP + + config CC_STACKPROTECTOR + bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)" ++ depends on X86_64 || !PAX_MEMORY_UDEREF + ---help--- + This option turns on the -fstack-protector GCC feature. This + feature puts, at the beginning of functions, a canary value on +@@ -1580,6 +1581,7 @@ config KEXEC_JUMP + config PHYSICAL_START + hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP) + default "0x1000000" ++ range 0x400000 0x40000000 + ---help--- + This gives the physical address where the kernel is loaded. + +@@ -1643,6 +1645,7 @@ config X86_NEED_RELOCS + config PHYSICAL_ALIGN + hex "Alignment value to which kernel should be aligned" if X86_32 + default "0x1000000" ++ range 0x400000 0x1000000 if PAX_KERNEXEC + range 0x2000 0x1000000 + ---help--- + This value puts the alignment restrictions on physical address +@@ -1674,9 +1677,10 @@ config HOTPLUG_CPU + Say N if you want to disable CPU hotplug. + + config COMPAT_VDSO +- def_bool y ++ def_bool n + prompt "Compat VDSO support" + depends on X86_32 || IA32_EMULATION ++ depends on !PAX_NOEXEC && !PAX_MEMORY_UDEREF + ---help--- + Map the 32-bit VDSO to the predictable old-style address too. + +diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu +index 706e12e..62e4feb 100644 +--- a/arch/x86/Kconfig.cpu ++++ b/arch/x86/Kconfig.cpu +@@ -334,7 +334,7 @@ config X86_PPRO_FENCE + + config X86_F00F_BUG + def_bool y +- depends on M586MMX || M586TSC || M586 || M486 || M386 ++ depends on (M586MMX || M586TSC || M586 || M486 || M386) && !PAX_KERNEXEC + + config X86_INVD_BUG + def_bool y +@@ -358,7 +358,7 @@ config X86_POPAD_OK + + config X86_ALIGNMENT_16 + def_bool y +- depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1 ++ depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK8 || MK7 || MK6 || MCORE2 || MPENTIUM4 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1 + + config X86_INTEL_USERCOPY + def_bool y +@@ -404,7 +404,7 @@ config X86_CMPXCHG64 + # generates cmov. + config X86_CMOV + def_bool y +- depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX) ++ depends on (MK8 || MK7 || MCORE2 || MPSC || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX) + + config X86_MINIMUM_CPU_FAMILY + int +diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug +index e46c214..ab62fd1 100644 +--- a/arch/x86/Kconfig.debug ++++ b/arch/x86/Kconfig.debug +@@ -84,7 +84,7 @@ config X86_PTDUMP + config DEBUG_RODATA + bool "Write protect kernel read-only data structures" + default y +- depends on DEBUG_KERNEL ++ depends on DEBUG_KERNEL && BROKEN + ---help--- + Mark the kernel read-only data as write-protected in the pagetables, + in order to catch accidental (and incorrect) writes to such const +@@ -102,7 +102,7 @@ config DEBUG_RODATA_TEST + + config DEBUG_SET_MODULE_RONX + bool "Set loadable kernel module data as NX and text as RO" +- depends on MODULES ++ depends on MODULES && BROKEN + ---help--- + This option helps catch unintended modifications to loadable + kernel module's text and read-only data. It also prevents execution +@@ -275,7 +275,7 @@ config OPTIMIZE_INLINING + + config DEBUG_STRICT_USER_COPY_CHECKS + bool "Strict copy size checks" +- depends on DEBUG_KERNEL && !TRACE_BRANCH_PROFILING ++ depends on DEBUG_KERNEL && !TRACE_BRANCH_PROFILING && !PAX_SIZE_OVERFLOW + ---help--- + Enabling this option turns a certain set of sanity checks for user + copy operations into compile time failures. +diff --git a/arch/x86/Makefile b/arch/x86/Makefile +index b1c611e..2c1a823 100644 +--- a/arch/x86/Makefile ++++ b/arch/x86/Makefile +@@ -46,6 +46,7 @@ else + UTS_MACHINE := x86_64 + CHECKFLAGS += -D__x86_64__ -m64 + ++ biarch := $(call cc-option,-m64) + KBUILD_AFLAGS += -m64 + KBUILD_CFLAGS += -m64 + +@@ -222,3 +223,12 @@ define archhelp + echo ' FDARGS="..." arguments for the booted kernel' + echo ' FDINITRD=file initrd for the booted kernel' + endef ++ ++define OLD_LD ++ ++*** ${VERSION}.${PATCHLEVEL} PaX kernels no longer build correctly with old versions of binutils. ++*** Please upgrade your binutils to 2.18 or newer ++endef ++ ++archprepare: ++ $(if $(LDFLAGS_BUILD_ID),,$(error $(OLD_LD))) +diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile +index 5a747dd..ff7b12c 100644 +--- a/arch/x86/boot/Makefile ++++ b/arch/x86/boot/Makefile +@@ -64,6 +64,9 @@ KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \ + $(call cc-option, -fno-stack-protector) \ + $(call cc-option, -mpreferred-stack-boundary=2) + KBUILD_CFLAGS += $(call cc-option, -m32) ++ifdef CONSTIFY_PLUGIN ++KBUILD_CFLAGS += $(CONSTIFY_PLUGIN) -fplugin-arg-constify_plugin-no-constify ++endif + KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ + GCOV_PROFILE := n + +diff --git a/arch/x86/boot/bitops.h b/arch/x86/boot/bitops.h +index 878e4b9..20537ab 100644 +--- a/arch/x86/boot/bitops.h ++++ b/arch/x86/boot/bitops.h +@@ -26,7 +26,7 @@ static inline int variable_test_bit(int nr, const void *addr) + u8 v; + const u32 *p = (const u32 *)addr; + +- asm("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr)); ++ asm volatile("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr)); + return v; + } + +@@ -37,7 +37,7 @@ static inline int variable_test_bit(int nr, const void *addr) + + static inline void set_bit(int nr, void *addr) + { +- asm("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr)); ++ asm volatile("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr)); + } + + #endif /* BOOT_BITOPS_H */ +diff --git a/arch/x86/boot/boot.h b/arch/x86/boot/boot.h +index 18997e5..83d9c67 100644 +--- a/arch/x86/boot/boot.h ++++ b/arch/x86/boot/boot.h +@@ -85,7 +85,7 @@ static inline void io_delay(void) + static inline u16 ds(void) + { + u16 seg; +- asm("movw %%ds,%0" : "=rm" (seg)); ++ asm volatile("movw %%ds,%0" : "=rm" (seg)); + return seg; + } + +@@ -181,7 +181,7 @@ static inline void wrgs32(u32 v, addr_t addr) + static inline int memcmp(const void *s1, const void *s2, size_t len) + { + u8 diff; +- asm("repe; cmpsb; setnz %0" ++ asm volatile("repe; cmpsb; setnz %0" + : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len)); + return diff; + } +diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile +index e398bb5..3a382ca 100644 +--- a/arch/x86/boot/compressed/Makefile ++++ b/arch/x86/boot/compressed/Makefile +@@ -14,6 +14,9 @@ cflags-$(CONFIG_X86_64) := -mcmodel=small + KBUILD_CFLAGS += $(cflags-y) + KBUILD_CFLAGS += $(call cc-option,-ffreestanding) + KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) ++ifdef CONSTIFY_PLUGIN ++KBUILD_CFLAGS += $(CONSTIFY_PLUGIN) -fplugin-arg-constify_plugin-no-constify ++endif + + KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ + GCOV_PROFILE := n +diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c +index 0cdfc0d..6e79437 100644 +--- a/arch/x86/boot/compressed/eboot.c ++++ b/arch/x86/boot/compressed/eboot.c +@@ -122,7 +122,6 @@ again: + *addr = max_addr; + } + +-free_pool: + efi_call_phys1(sys_table->boottime->free_pool, map); + + fail: +@@ -186,7 +185,6 @@ static efi_status_t low_alloc(unsigned long size, unsigned long align, + if (i == map_size / desc_size) + status = EFI_NOT_FOUND; + +-free_pool: + efi_call_phys1(sys_table->boottime->free_pool, map); + fail: + return status; +diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S +index c85e3ac..6f5aa80 100644 +--- a/arch/x86/boot/compressed/head_32.S ++++ b/arch/x86/boot/compressed/head_32.S +@@ -106,7 +106,7 @@ preferred_addr: + notl %eax + andl %eax, %ebx + #else +- movl $LOAD_PHYSICAL_ADDR, %ebx ++ movl $____LOAD_PHYSICAL_ADDR, %ebx + #endif + + /* Target address to relocate to for decompression */ +@@ -192,7 +192,7 @@ relocated: + * and where it was actually loaded. + */ + movl %ebp, %ebx +- subl $LOAD_PHYSICAL_ADDR, %ebx ++ subl $____LOAD_PHYSICAL_ADDR, %ebx + jz 2f /* Nothing to be done if loaded at compiled addr. */ + /* + * Process relocations. +@@ -200,8 +200,7 @@ relocated: + + 1: subl $4, %edi + movl (%edi), %ecx +- testl %ecx, %ecx +- jz 2f ++ jecxz 2f + addl %ebx, -__PAGE_OFFSET(%ebx, %ecx) + jmp 1b + 2: +diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S +index 87e03a1..0d94c76 100644 +--- a/arch/x86/boot/compressed/head_64.S ++++ b/arch/x86/boot/compressed/head_64.S +@@ -91,7 +91,7 @@ ENTRY(startup_32) + notl %eax + andl %eax, %ebx + #else +- movl $LOAD_PHYSICAL_ADDR, %ebx ++ movl $____LOAD_PHYSICAL_ADDR, %ebx + #endif + + /* Target address to relocate to for decompression */ +@@ -263,7 +263,7 @@ preferred_addr: + notq %rax + andq %rax, %rbp + #else +- movq $LOAD_PHYSICAL_ADDR, %rbp ++ movq $____LOAD_PHYSICAL_ADDR, %rbp + #endif + + /* Target address to relocate to for decompression */ +diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c +index 7116dcb..d9ae1d7 100644 +--- a/arch/x86/boot/compressed/misc.c ++++ b/arch/x86/boot/compressed/misc.c +@@ -310,7 +310,7 @@ static void parse_elf(void *output) + case PT_LOAD: + #ifdef CONFIG_RELOCATABLE + dest = output; +- dest += (phdr->p_paddr - LOAD_PHYSICAL_ADDR); ++ dest += (phdr->p_paddr - ____LOAD_PHYSICAL_ADDR); + #else + dest = (void *)(phdr->p_paddr); + #endif +@@ -365,7 +365,7 @@ asmlinkage void decompress_kernel(void *rmode, memptr heap, + error("Destination address too large"); + #endif + #ifndef CONFIG_RELOCATABLE +- if ((unsigned long)output != LOAD_PHYSICAL_ADDR) ++ if ((unsigned long)output != ____LOAD_PHYSICAL_ADDR) + error("Wrong destination address"); + #endif + +diff --git a/arch/x86/boot/cpucheck.c b/arch/x86/boot/cpucheck.c +index 4d3ff03..e4972ff 100644 +--- a/arch/x86/boot/cpucheck.c ++++ b/arch/x86/boot/cpucheck.c +@@ -74,7 +74,7 @@ static int has_fpu(void) + u16 fcw = -1, fsw = -1; + u32 cr0; + +- asm("movl %%cr0,%0" : "=r" (cr0)); ++ asm volatile("movl %%cr0,%0" : "=r" (cr0)); + if (cr0 & (X86_CR0_EM|X86_CR0_TS)) { + cr0 &= ~(X86_CR0_EM|X86_CR0_TS); + asm volatile("movl %0,%%cr0" : : "r" (cr0)); +@@ -90,7 +90,7 @@ static int has_eflag(u32 mask) + { + u32 f0, f1; + +- asm("pushfl ; " ++ asm volatile("pushfl ; " + "pushfl ; " + "popl %0 ; " + "movl %0,%1 ; " +@@ -115,7 +115,7 @@ static void get_flags(void) + set_bit(X86_FEATURE_FPU, cpu.flags); + + if (has_eflag(X86_EFLAGS_ID)) { +- asm("cpuid" ++ asm volatile("cpuid" + : "=a" (max_intel_level), + "=b" (cpu_vendor[0]), + "=d" (cpu_vendor[1]), +@@ -124,7 +124,7 @@ static void get_flags(void) + + if (max_intel_level >= 0x00000001 && + max_intel_level <= 0x0000ffff) { +- asm("cpuid" ++ asm volatile("cpuid" + : "=a" (tfms), + "=c" (cpu.flags[4]), + "=d" (cpu.flags[0]) +@@ -136,7 +136,7 @@ static void get_flags(void) + cpu.model += ((tfms >> 16) & 0xf) << 4; + } + +- asm("cpuid" ++ asm volatile("cpuid" + : "=a" (max_amd_level) + : "a" (0x80000000) + : "ebx", "ecx", "edx"); +@@ -144,7 +144,7 @@ static void get_flags(void) + if (max_amd_level >= 0x80000001 && + max_amd_level <= 0x8000ffff) { + u32 eax = 0x80000001; +- asm("cpuid" ++ asm volatile("cpuid" + : "+a" (eax), + "=c" (cpu.flags[6]), + "=d" (cpu.flags[1]) +@@ -203,9 +203,9 @@ int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr) + u32 ecx = MSR_K7_HWCR; + u32 eax, edx; + +- asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); ++ asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); + eax &= ~(1 << 15); +- asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); ++ asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); + + get_flags(); /* Make sure it really did something */ + err = check_flags(); +@@ -218,9 +218,9 @@ int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr) + u32 ecx = MSR_VIA_FCR; + u32 eax, edx; + +- asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); ++ asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); + eax |= (1<<1)|(1<<7); +- asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); ++ asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); + + set_bit(X86_FEATURE_CX8, cpu.flags); + err = check_flags(); +@@ -231,12 +231,12 @@ int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr) + u32 eax, edx; + u32 level = 1; + +- asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); +- asm("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx)); +- asm("cpuid" ++ asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); ++ asm volatile("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx)); ++ asm volatile("cpuid" + : "+a" (level), "=d" (cpu.flags[0]) + : : "ecx", "ebx"); +- asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); ++ asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); + + err = check_flags(); + } +diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S +index f1bbeeb..aff09cb 100644 +--- a/arch/x86/boot/header.S ++++ b/arch/x86/boot/header.S +@@ -372,7 +372,7 @@ setup_data: .quad 0 # 64-bit physical pointer to + # single linked list of + # struct setup_data + +-pref_address: .quad LOAD_PHYSICAL_ADDR # preferred load addr ++pref_address: .quad ____LOAD_PHYSICAL_ADDR # preferred load addr + + #define ZO_INIT_SIZE (ZO__end - ZO_startup_32 + ZO_z_extract_offset) + #define VO_INIT_SIZE (VO__end - VO__text) +diff --git a/arch/x86/boot/memory.c b/arch/x86/boot/memory.c +index db75d07..8e6d0af 100644 +--- a/arch/x86/boot/memory.c ++++ b/arch/x86/boot/memory.c +@@ -19,7 +19,7 @@ + + static int detect_memory_e820(void) + { +- int count = 0; ++ unsigned int count = 0; + struct biosregs ireg, oreg; + struct e820entry *desc = boot_params.e820_map; + static struct e820entry buf; /* static so it is zeroed */ +diff --git a/arch/x86/boot/video-vesa.c b/arch/x86/boot/video-vesa.c +index 11e8c6e..fdbb1ed 100644 +--- a/arch/x86/boot/video-vesa.c ++++ b/arch/x86/boot/video-vesa.c +@@ -200,6 +200,7 @@ static void vesa_store_pm_info(void) + + boot_params.screen_info.vesapm_seg = oreg.es; + boot_params.screen_info.vesapm_off = oreg.di; ++ boot_params.screen_info.vesapm_size = oreg.cx; + } + + /* +diff --git a/arch/x86/boot/video.c b/arch/x86/boot/video.c +index 43eda28..5ab5fdb 100644 +--- a/arch/x86/boot/video.c ++++ b/arch/x86/boot/video.c +@@ -96,7 +96,7 @@ static void store_mode_params(void) + static unsigned int get_entry(void) + { + char entry_buf[4]; +- int i, len = 0; ++ unsigned int i, len = 0; + int key; + unsigned int v; + +diff --git a/arch/x86/crypto/aes-x86_64-asm_64.S b/arch/x86/crypto/aes-x86_64-asm_64.S +index 5b577d5..3c1fed4 100644 +--- a/arch/x86/crypto/aes-x86_64-asm_64.S ++++ b/arch/x86/crypto/aes-x86_64-asm_64.S +@@ -8,6 +8,8 @@ + * including this sentence is retained in full. + */ + ++#include <asm/alternative-asm.h> ++ + .extern crypto_ft_tab + .extern crypto_it_tab + .extern crypto_fl_tab +@@ -71,6 +73,8 @@ FUNC: movq r1,r2; \ + je B192; \ + leaq 32(r9),r9; + ++#define ret pax_force_retaddr 0, 1; ret ++ + #define epilogue(r1,r2,r3,r4,r5,r6,r7,r8,r9) \ + movq r1,r2; \ + movq r3,r4; \ +diff --git a/arch/x86/crypto/aesni-intel_asm.S b/arch/x86/crypto/aesni-intel_asm.S +index 3470624..201259d 100644 +--- a/arch/x86/crypto/aesni-intel_asm.S ++++ b/arch/x86/crypto/aesni-intel_asm.S +@@ -31,6 +31,7 @@ + + #include <linux/linkage.h> + #include <asm/inst.h> ++#include <asm/alternative-asm.h> + + #ifdef __x86_64__ + .data +@@ -1436,7 +1437,9 @@ _return_T_done_decrypt: + pop %r14 + pop %r13 + pop %r12 ++ pax_force_retaddr 0, 1 + ret ++ENDPROC(aesni_gcm_dec) + + + /***************************************************************************** +@@ -1699,7 +1702,9 @@ _return_T_done_encrypt: + pop %r14 + pop %r13 + pop %r12 ++ pax_force_retaddr 0, 1 + ret ++ENDPROC(aesni_gcm_enc) + + #endif + +@@ -1714,6 +1719,7 @@ _key_expansion_256a: + pxor %xmm1, %xmm0 + movaps %xmm0, (TKEYP) + add $0x10, TKEYP ++ pax_force_retaddr_bts + ret + + .align 4 +@@ -1738,6 +1744,7 @@ _key_expansion_192a: + shufps $0b01001110, %xmm2, %xmm1 + movaps %xmm1, 0x10(TKEYP) + add $0x20, TKEYP ++ pax_force_retaddr_bts + ret + + .align 4 +@@ -1757,6 +1764,7 @@ _key_expansion_192b: + + movaps %xmm0, (TKEYP) + add $0x10, TKEYP ++ pax_force_retaddr_bts + ret + + .align 4 +@@ -1769,6 +1777,7 @@ _key_expansion_256b: + pxor %xmm1, %xmm2 + movaps %xmm2, (TKEYP) + add $0x10, TKEYP ++ pax_force_retaddr_bts + ret + + /* +@@ -1881,7 +1890,9 @@ ENTRY(aesni_set_key) + #ifndef __x86_64__ + popl KEYP + #endif ++ pax_force_retaddr 0, 1 + ret ++ENDPROC(aesni_set_key) + + /* + * void aesni_enc(struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src) +@@ -1902,7 +1913,9 @@ ENTRY(aesni_enc) + popl KLEN + popl KEYP + #endif ++ pax_force_retaddr 0, 1 + ret ++ENDPROC(aesni_enc) + + /* + * _aesni_enc1: internal ABI +@@ -1959,6 +1972,7 @@ _aesni_enc1: + AESENC KEY STATE + movaps 0x70(TKEYP), KEY + AESENCLAST KEY STATE ++ pax_force_retaddr_bts + ret + + /* +@@ -2067,6 +2081,7 @@ _aesni_enc4: + AESENCLAST KEY STATE2 + AESENCLAST KEY STATE3 + AESENCLAST KEY STATE4 ++ pax_force_retaddr_bts + ret + + /* +@@ -2089,7 +2104,9 @@ ENTRY(aesni_dec) + popl KLEN + popl KEYP + #endif ++ pax_force_retaddr 0, 1 + ret ++ENDPROC(aesni_dec) + + /* + * _aesni_dec1: internal ABI +@@ -2146,6 +2163,7 @@ _aesni_dec1: + AESDEC KEY STATE + movaps 0x70(TKEYP), KEY + AESDECLAST KEY STATE ++ pax_force_retaddr_bts + ret + + /* +@@ -2254,6 +2272,7 @@ _aesni_dec4: + AESDECLAST KEY STATE2 + AESDECLAST KEY STATE3 + AESDECLAST KEY STATE4 ++ pax_force_retaddr_bts + ret + + /* +@@ -2311,7 +2330,9 @@ ENTRY(aesni_ecb_enc) + popl KEYP + popl LEN + #endif ++ pax_force_retaddr 0, 1 + ret ++ENDPROC(aesni_ecb_enc) + + /* + * void aesni_ecb_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, +@@ -2369,7 +2390,9 @@ ENTRY(aesni_ecb_dec) + popl KEYP + popl LEN + #endif ++ pax_force_retaddr 0, 1 + ret ++ENDPROC(aesni_ecb_dec) + + /* + * void aesni_cbc_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, +@@ -2410,7 +2433,9 @@ ENTRY(aesni_cbc_enc) + popl LEN + popl IVP + #endif ++ pax_force_retaddr 0, 1 + ret ++ENDPROC(aesni_cbc_enc) + + /* + * void aesni_cbc_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, +@@ -2500,7 +2525,9 @@ ENTRY(aesni_cbc_dec) + popl LEN + popl IVP + #endif ++ pax_force_retaddr 0, 1 + ret ++ENDPROC(aesni_cbc_dec) + + #ifdef __x86_64__ + .align 16 +@@ -2526,6 +2553,7 @@ _aesni_inc_init: + mov $1, TCTR_LOW + MOVQ_R64_XMM TCTR_LOW INC + MOVQ_R64_XMM CTR TCTR_LOW ++ pax_force_retaddr_bts + ret + + /* +@@ -2554,6 +2582,7 @@ _aesni_inc: + .Linc_low: + movaps CTR, IV + PSHUFB_XMM BSWAP_MASK IV ++ pax_force_retaddr_bts + ret + + /* +@@ -2614,5 +2643,7 @@ ENTRY(aesni_ctr_enc) + .Lctr_enc_ret: + movups IV, (IVP) + .Lctr_enc_just_ret: ++ pax_force_retaddr 0, 1 + ret ++ENDPROC(aesni_ctr_enc) + #endif +diff --git a/arch/x86/crypto/blowfish-x86_64-asm_64.S b/arch/x86/crypto/blowfish-x86_64-asm_64.S +index 391d245..67f35c2 100644 +--- a/arch/x86/crypto/blowfish-x86_64-asm_64.S ++++ b/arch/x86/crypto/blowfish-x86_64-asm_64.S +@@ -20,6 +20,8 @@ + * + */ + ++#include <asm/alternative-asm.h> ++ + .file "blowfish-x86_64-asm.S" + .text + +@@ -151,9 +153,11 @@ __blowfish_enc_blk: + jnz __enc_xor; + + write_block(); ++ pax_force_retaddr 0, 1 + ret; + __enc_xor: + xor_block(); ++ pax_force_retaddr 0, 1 + ret; + + .align 8 +@@ -188,6 +192,7 @@ blowfish_dec_blk: + + movq %r11, %rbp; + ++ pax_force_retaddr 0, 1 + ret; + + /********************************************************************** +@@ -342,6 +347,7 @@ __blowfish_enc_blk_4way: + + popq %rbx; + popq %rbp; ++ pax_force_retaddr 0, 1 + ret; + + __enc_xor4: +@@ -349,6 +355,7 @@ __enc_xor4: + + popq %rbx; + popq %rbp; ++ pax_force_retaddr 0, 1 + ret; + + .align 8 +@@ -386,5 +393,6 @@ blowfish_dec_blk_4way: + popq %rbx; + popq %rbp; + ++ pax_force_retaddr 0, 1 + ret; + +diff --git a/arch/x86/crypto/camellia-x86_64-asm_64.S b/arch/x86/crypto/camellia-x86_64-asm_64.S +index 0b33743..7a56206 100644 +--- a/arch/x86/crypto/camellia-x86_64-asm_64.S ++++ b/arch/x86/crypto/camellia-x86_64-asm_64.S +@@ -20,6 +20,8 @@ + * + */ + ++#include <asm/alternative-asm.h> ++ + .file "camellia-x86_64-asm_64.S" + .text + +@@ -229,12 +231,14 @@ __enc_done: + enc_outunpack(mov, RT1); + + movq RRBP, %rbp; ++ pax_force_retaddr 0, 1 + ret; + + __enc_xor: + enc_outunpack(xor, RT1); + + movq RRBP, %rbp; ++ pax_force_retaddr 0, 1 + ret; + + .global camellia_dec_blk; +@@ -275,6 +279,7 @@ __dec_rounds16: + dec_outunpack(); + + movq RRBP, %rbp; ++ pax_force_retaddr 0, 1 + ret; + + /********************************************************************** +@@ -468,6 +473,7 @@ __enc2_done: + + movq RRBP, %rbp; + popq %rbx; ++ pax_force_retaddr 0, 1 + ret; + + __enc2_xor: +@@ -475,6 +481,7 @@ __enc2_xor: + + movq RRBP, %rbp; + popq %rbx; ++ pax_force_retaddr 0, 1 + ret; + + .global camellia_dec_blk_2way; +@@ -517,4 +524,5 @@ __dec2_rounds16: + + movq RRBP, %rbp; + movq RXOR, %rbx; ++ pax_force_retaddr 0, 1 + ret; +diff --git a/arch/x86/crypto/salsa20-x86_64-asm_64.S b/arch/x86/crypto/salsa20-x86_64-asm_64.S +index 6214a9b..1f4fc9a 100644 +--- a/arch/x86/crypto/salsa20-x86_64-asm_64.S ++++ b/arch/x86/crypto/salsa20-x86_64-asm_64.S +@@ -1,3 +1,5 @@ ++#include <asm/alternative-asm.h> ++ + # enter ECRYPT_encrypt_bytes + .text + .p2align 5 +@@ -790,6 +792,7 @@ ECRYPT_encrypt_bytes: + add %r11,%rsp + mov %rdi,%rax + mov %rsi,%rdx ++ pax_force_retaddr 0, 1 + ret + # bytesatleast65: + ._bytesatleast65: +@@ -891,6 +894,7 @@ ECRYPT_keysetup: + add %r11,%rsp + mov %rdi,%rax + mov %rsi,%rdx ++ pax_force_retaddr + ret + # enter ECRYPT_ivsetup + .text +@@ -917,4 +921,5 @@ ECRYPT_ivsetup: + add %r11,%rsp + mov %rdi,%rax + mov %rsi,%rdx ++ pax_force_retaddr + ret +diff --git a/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S b/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S +index 3ee1ff0..cbc568b 100644 +--- a/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S ++++ b/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S +@@ -24,6 +24,8 @@ + * + */ + ++#include <asm/alternative-asm.h> ++ + .file "serpent-sse2-x86_64-asm_64.S" + .text + +@@ -692,12 +694,14 @@ __serpent_enc_blk_8way: + write_blocks(%rsi, RA1, RB1, RC1, RD1, RK0, RK1, RK2); + write_blocks(%rax, RA2, RB2, RC2, RD2, RK0, RK1, RK2); + ++ pax_force_retaddr + ret; + + __enc_xor8: + xor_blocks(%rsi, RA1, RB1, RC1, RD1, RK0, RK1, RK2); + xor_blocks(%rax, RA2, RB2, RC2, RD2, RK0, RK1, RK2); + ++ pax_force_retaddr + ret; + + .align 8 +@@ -755,4 +759,5 @@ serpent_dec_blk_8way: + write_blocks(%rsi, RC1, RD1, RB1, RE1, RK0, RK1, RK2); + write_blocks(%rax, RC2, RD2, RB2, RE2, RK0, RK1, RK2); + ++ pax_force_retaddr + ret; +diff --git a/arch/x86/crypto/sha1_ssse3_asm.S b/arch/x86/crypto/sha1_ssse3_asm.S +index b2c2f57..8470cab 100644 +--- a/arch/x86/crypto/sha1_ssse3_asm.S ++++ b/arch/x86/crypto/sha1_ssse3_asm.S +@@ -28,6 +28,8 @@ + * (at your option) any later version. + */ + ++#include <asm/alternative-asm.h> ++ + #define CTX %rdi // arg1 + #define BUF %rsi // arg2 + #define CNT %rdx // arg3 +@@ -104,6 +106,7 @@ + pop %r12 + pop %rbp + pop %rbx ++ pax_force_retaddr 0, 1 + ret + + .size \name, .-\name +diff --git a/arch/x86/crypto/twofish-x86_64-asm_64-3way.S b/arch/x86/crypto/twofish-x86_64-asm_64-3way.S +index 5b012a2..36d5364 100644 +--- a/arch/x86/crypto/twofish-x86_64-asm_64-3way.S ++++ b/arch/x86/crypto/twofish-x86_64-asm_64-3way.S +@@ -20,6 +20,8 @@ + * + */ + ++#include <asm/alternative-asm.h> ++ + .file "twofish-x86_64-asm-3way.S" + .text + +@@ -260,6 +262,7 @@ __twofish_enc_blk_3way: + popq %r13; + popq %r14; + popq %r15; ++ pax_force_retaddr 0, 1 + ret; + + __enc_xor3: +@@ -271,6 +274,7 @@ __enc_xor3: + popq %r13; + popq %r14; + popq %r15; ++ pax_force_retaddr 0, 1 + ret; + + .global twofish_dec_blk_3way +@@ -312,5 +316,6 @@ twofish_dec_blk_3way: + popq %r13; + popq %r14; + popq %r15; ++ pax_force_retaddr 0, 1 + ret; + +diff --git a/arch/x86/crypto/twofish-x86_64-asm_64.S b/arch/x86/crypto/twofish-x86_64-asm_64.S +index 7bcf3fc..f53832f 100644 +--- a/arch/x86/crypto/twofish-x86_64-asm_64.S ++++ b/arch/x86/crypto/twofish-x86_64-asm_64.S +@@ -21,6 +21,7 @@ + .text + + #include <asm/asm-offsets.h> ++#include <asm/alternative-asm.h> + + #define a_offset 0 + #define b_offset 4 +@@ -268,6 +269,7 @@ twofish_enc_blk: + + popq R1 + movq $1,%rax ++ pax_force_retaddr 0, 1 + ret + + twofish_dec_blk: +@@ -319,4 +321,5 @@ twofish_dec_blk: + + popq R1 + movq $1,%rax ++ pax_force_retaddr 0, 1 + ret +diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c +index 07b3a68..bd2a388 100644 +--- a/arch/x86/ia32/ia32_aout.c ++++ b/arch/x86/ia32/ia32_aout.c +@@ -159,6 +159,8 @@ static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, + unsigned long dump_start, dump_size; + struct user32 dump; + ++ memset(&dump, 0, sizeof(dump)); ++ + fs = get_fs(); + set_fs(KERNEL_DS); + has_dumped = 1; +diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c +index 4f5bfac..e1ef0d3 100644 +--- a/arch/x86/ia32/ia32_signal.c ++++ b/arch/x86/ia32/ia32_signal.c +@@ -168,7 +168,7 @@ asmlinkage long sys32_sigaltstack(const stack_ia32_t __user *uss_ptr, + } + seg = get_fs(); + set_fs(KERNEL_DS); +- ret = do_sigaltstack(uss_ptr ? &uss : NULL, &uoss, regs->sp); ++ ret = do_sigaltstack(uss_ptr ? (const stack_t __force_user *)&uss : NULL, (stack_t __force_user *)&uoss, regs->sp); + set_fs(seg); + if (ret >= 0 && uoss_ptr) { + if (!access_ok(VERIFY_WRITE, uoss_ptr, sizeof(stack_ia32_t))) +@@ -369,7 +369,7 @@ static int ia32_setup_sigcontext(struct sigcontext_ia32 __user *sc, + */ + static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, + size_t frame_size, +- void **fpstate) ++ void __user **fpstate) + { + unsigned long sp; + +@@ -390,7 +390,7 @@ static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, + + if (used_math()) { + sp = sp - sig_xstate_ia32_size; +- *fpstate = (struct _fpstate_ia32 *) sp; ++ *fpstate = (struct _fpstate_ia32 __user *) sp; + if (save_i387_xstate_ia32(*fpstate) < 0) + return (void __user *) -1L; + } +@@ -398,7 +398,7 @@ static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, + sp -= frame_size; + /* Align the stack pointer according to the i386 ABI, + * i.e. so that on function entry ((sp + 4) & 15) == 0. */ +- sp = ((sp + 4) & -16ul) - 4; ++ sp = ((sp - 12) & -16ul) - 4; + return (void __user *) sp; + } + +@@ -456,7 +456,7 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka, + * These are actually not used anymore, but left because some + * gdb versions depend on them as a marker. + */ +- put_user_ex(*((u64 *)&code), (u64 *)frame->retcode); ++ put_user_ex(*((const u64 *)&code), (u64 __user *)frame->retcode); + } put_user_catch(err); + + if (err) +@@ -498,7 +498,7 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, + 0xb8, + __NR_ia32_rt_sigreturn, + 0x80cd, +- 0, ++ 0 + }; + + frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate); +@@ -528,16 +528,18 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, + + if (ka->sa.sa_flags & SA_RESTORER) + restorer = ka->sa.sa_restorer; ++ else if (current->mm->context.vdso) ++ /* Return stub is in 32bit vsyscall page */ ++ restorer = VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn); + else +- restorer = VDSO32_SYMBOL(current->mm->context.vdso, +- rt_sigreturn); ++ restorer = &frame->retcode; + put_user_ex(ptr_to_compat(restorer), &frame->pretcode); + + /* + * Not actually used anymore, but left because some gdb + * versions need it. + */ +- put_user_ex(*((u64 *)&code), (u64 *)frame->retcode); ++ put_user_ex(*((const u64 *)&code), (u64 __user *)frame->retcode); + } put_user_catch(err); + + if (err) +diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S +index e3e7340..05ed805 100644 +--- a/arch/x86/ia32/ia32entry.S ++++ b/arch/x86/ia32/ia32entry.S +@@ -13,8 +13,10 @@ + #include <asm/thread_info.h> + #include <asm/segment.h> + #include <asm/irqflags.h> ++#include <asm/pgtable.h> + #include <linux/linkage.h> + #include <linux/err.h> ++#include <asm/alternative-asm.h> + + /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this. */ + #include <linux/elf-em.h> +@@ -94,6 +96,32 @@ ENTRY(native_irq_enable_sysexit) + ENDPROC(native_irq_enable_sysexit) + #endif + ++ .macro pax_enter_kernel_user ++ pax_set_fptr_mask ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ call pax_enter_kernel_user ++#endif ++ .endm ++ ++ .macro pax_exit_kernel_user ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ call pax_exit_kernel_user ++#endif ++#ifdef CONFIG_PAX_RANDKSTACK ++ pushq %rax ++ pushq %r11 ++ call pax_randomize_kstack ++ popq %r11 ++ popq %rax ++#endif ++ .endm ++ ++.macro pax_erase_kstack ++#ifdef CONFIG_PAX_MEMORY_STACKLEAK ++ call pax_erase_kstack ++#endif ++.endm ++ + /* + * 32bit SYSENTER instruction entry. + * +@@ -120,12 +148,6 @@ ENTRY(ia32_sysenter_target) + CFI_REGISTER rsp,rbp + SWAPGS_UNSAFE_STACK + movq PER_CPU_VAR(kernel_stack), %rsp +- addq $(KERNEL_STACK_OFFSET),%rsp +- /* +- * No need to follow this irqs on/off section: the syscall +- * disabled irqs, here we enable it straight after entry: +- */ +- ENABLE_INTERRUPTS(CLBR_NONE) + movl %ebp,%ebp /* zero extension */ + pushq_cfi $__USER32_DS + /*CFI_REL_OFFSET ss,0*/ +@@ -133,24 +155,39 @@ ENTRY(ia32_sysenter_target) + CFI_REL_OFFSET rsp,0 + pushfq_cfi + /*CFI_REL_OFFSET rflags,0*/ +- movl TI_sysenter_return+THREAD_INFO(%rsp,3*8-KERNEL_STACK_OFFSET),%r10d +- CFI_REGISTER rip,r10 ++ orl $X86_EFLAGS_IF,(%rsp) ++ GET_THREAD_INFO(%r11) ++ movl TI_sysenter_return(%r11), %r11d ++ CFI_REGISTER rip,r11 + pushq_cfi $__USER32_CS + /*CFI_REL_OFFSET cs,0*/ + movl %eax, %eax +- pushq_cfi %r10 ++ pushq_cfi %r11 + CFI_REL_OFFSET rip,0 + pushq_cfi %rax + cld + SAVE_ARGS 0,1,0 ++ pax_enter_kernel_user ++ /* ++ * No need to follow this irqs on/off section: the syscall ++ * disabled irqs, here we enable it straight after entry: ++ */ ++ ENABLE_INTERRUPTS(CLBR_NONE) + /* no need to do an access_ok check here because rbp has been + 32bit zero extended */ ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ mov $PAX_USER_SHADOW_BASE,%r11 ++ add %r11,%rbp ++#endif ++ + 1: movl (%rbp),%ebp + .section __ex_table,"a" + .quad 1b,ia32_badarg + .previous +- orl $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET) +- testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) ++ GET_THREAD_INFO(%r11) ++ orl $TS_COMPAT,TI_status(%r11) ++ testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11) + CFI_REMEMBER_STATE + jnz sysenter_tracesys + cmpq $(IA32_NR_syscalls-1),%rax +@@ -160,12 +197,15 @@ sysenter_do_call: + sysenter_dispatch: + call *ia32_sys_call_table(,%rax,8) + movq %rax,RAX-ARGOFFSET(%rsp) ++ GET_THREAD_INFO(%r11) + DISABLE_INTERRUPTS(CLBR_NONE) + TRACE_IRQS_OFF +- testl $_TIF_ALLWORK_MASK,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) ++ testl $_TIF_ALLWORK_MASK,TI_flags(%r11) + jnz sysexit_audit + sysexit_from_sys_call: +- andl $~TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET) ++ pax_exit_kernel_user ++ pax_erase_kstack ++ andl $~TS_COMPAT,TI_status(%r11) + /* clear IF, that popfq doesn't enable interrupts early */ + andl $~0x200,EFLAGS-R11(%rsp) + movl RIP-R11(%rsp),%edx /* User %eip */ +@@ -191,6 +231,9 @@ sysexit_from_sys_call: + movl %eax,%esi /* 2nd arg: syscall number */ + movl $AUDIT_ARCH_I386,%edi /* 1st arg: audit arch */ + call __audit_syscall_entry ++ ++ pax_erase_kstack ++ + movl RAX-ARGOFFSET(%rsp),%eax /* reload syscall number */ + cmpq $(IA32_NR_syscalls-1),%rax + ja ia32_badsys +@@ -202,7 +245,7 @@ sysexit_from_sys_call: + .endm + + .macro auditsys_exit exit +- testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) ++ testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11) + jnz ia32_ret_from_sys_call + TRACE_IRQS_ON + sti +@@ -213,11 +256,12 @@ sysexit_from_sys_call: + 1: setbe %al /* 1 if error, 0 if not */ + movzbl %al,%edi /* zero-extend that into %edi */ + call __audit_syscall_exit ++ GET_THREAD_INFO(%r11) + movq RAX-ARGOFFSET(%rsp),%rax /* reload syscall return value */ + movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi + cli + TRACE_IRQS_OFF +- testl %edi,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) ++ testl %edi,TI_flags(%r11) + jz \exit + CLEAR_RREGS -ARGOFFSET + jmp int_with_check +@@ -235,7 +279,7 @@ sysexit_audit: + + sysenter_tracesys: + #ifdef CONFIG_AUDITSYSCALL +- testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) ++ testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11) + jz sysenter_auditsys + #endif + SAVE_REST +@@ -243,6 +287,9 @@ sysenter_tracesys: + movq $-ENOSYS,RAX(%rsp)/* ptrace can change this for a bad syscall */ + movq %rsp,%rdi /* &pt_regs -> arg1 */ + call syscall_trace_enter ++ ++ pax_erase_kstack ++ + LOAD_ARGS32 ARGOFFSET /* reload args from stack in case ptrace changed it */ + RESTORE_REST + cmpq $(IA32_NR_syscalls-1),%rax +@@ -274,19 +321,20 @@ ENDPROC(ia32_sysenter_target) + ENTRY(ia32_cstar_target) + CFI_STARTPROC32 simple + CFI_SIGNAL_FRAME +- CFI_DEF_CFA rsp,KERNEL_STACK_OFFSET ++ CFI_DEF_CFA rsp,0 + CFI_REGISTER rip,rcx + /*CFI_REGISTER rflags,r11*/ + SWAPGS_UNSAFE_STACK + movl %esp,%r8d + CFI_REGISTER rsp,r8 + movq PER_CPU_VAR(kernel_stack),%rsp ++ SAVE_ARGS 8*6,0,0 ++ pax_enter_kernel_user + /* + * No need to follow this irqs on/off section: the syscall + * disabled irqs and here we enable it straight after entry: + */ + ENABLE_INTERRUPTS(CLBR_NONE) +- SAVE_ARGS 8,0,0 + movl %eax,%eax /* zero extension */ + movq %rax,ORIG_RAX-ARGOFFSET(%rsp) + movq %rcx,RIP-ARGOFFSET(%rsp) +@@ -302,12 +350,19 @@ ENTRY(ia32_cstar_target) + /* no need to do an access_ok check here because r8 has been + 32bit zero extended */ + /* hardware stack frame is complete now */ ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ mov $PAX_USER_SHADOW_BASE,%r11 ++ add %r11,%r8 ++#endif ++ + 1: movl (%r8),%r9d + .section __ex_table,"a" + .quad 1b,ia32_badarg + .previous +- orl $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET) +- testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) ++ GET_THREAD_INFO(%r11) ++ orl $TS_COMPAT,TI_status(%r11) ++ testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11) + CFI_REMEMBER_STATE + jnz cstar_tracesys + cmpq $IA32_NR_syscalls-1,%rax +@@ -317,12 +372,15 @@ cstar_do_call: + cstar_dispatch: + call *ia32_sys_call_table(,%rax,8) + movq %rax,RAX-ARGOFFSET(%rsp) ++ GET_THREAD_INFO(%r11) + DISABLE_INTERRUPTS(CLBR_NONE) + TRACE_IRQS_OFF +- testl $_TIF_ALLWORK_MASK,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) ++ testl $_TIF_ALLWORK_MASK,TI_flags(%r11) + jnz sysretl_audit + sysretl_from_sys_call: +- andl $~TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET) ++ pax_exit_kernel_user ++ pax_erase_kstack ++ andl $~TS_COMPAT,TI_status(%r11) + RESTORE_ARGS 0,-ARG_SKIP,0,0,0 + movl RIP-ARGOFFSET(%rsp),%ecx + CFI_REGISTER rip,rcx +@@ -350,7 +408,7 @@ sysretl_audit: + + cstar_tracesys: + #ifdef CONFIG_AUDITSYSCALL +- testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) ++ testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11) + jz cstar_auditsys + #endif + xchgl %r9d,%ebp +@@ -359,6 +417,9 @@ cstar_tracesys: + movq $-ENOSYS,RAX(%rsp) /* ptrace can change this for a bad syscall */ + movq %rsp,%rdi /* &pt_regs -> arg1 */ + call syscall_trace_enter ++ ++ pax_erase_kstack ++ + LOAD_ARGS32 ARGOFFSET, 1 /* reload args from stack in case ptrace changed it */ + RESTORE_REST + xchgl %ebp,%r9d +@@ -404,19 +465,21 @@ ENTRY(ia32_syscall) + CFI_REL_OFFSET rip,RIP-RIP + PARAVIRT_ADJUST_EXCEPTION_FRAME + SWAPGS +- /* +- * No need to follow this irqs on/off section: the syscall +- * disabled irqs and here we enable it straight after entry: +- */ +- ENABLE_INTERRUPTS(CLBR_NONE) + movl %eax,%eax + pushq_cfi %rax + cld + /* note the registers are not zero extended to the sf. + this could be a problem. */ + SAVE_ARGS 0,1,0 +- orl $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET) +- testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) ++ pax_enter_kernel_user ++ /* ++ * No need to follow this irqs on/off section: the syscall ++ * disabled irqs and here we enable it straight after entry: ++ */ ++ ENABLE_INTERRUPTS(CLBR_NONE) ++ GET_THREAD_INFO(%r11) ++ orl $TS_COMPAT,TI_status(%r11) ++ testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11) + jnz ia32_tracesys + cmpq $(IA32_NR_syscalls-1),%rax + ja ia32_badsys +@@ -435,6 +498,9 @@ ia32_tracesys: + movq $-ENOSYS,RAX(%rsp) /* ptrace can change this for a bad syscall */ + movq %rsp,%rdi /* &pt_regs -> arg1 */ + call syscall_trace_enter ++ ++ pax_erase_kstack ++ + LOAD_ARGS32 ARGOFFSET /* reload args from stack in case ptrace changed it */ + RESTORE_REST + cmpq $(IA32_NR_syscalls-1),%rax +diff --git a/arch/x86/ia32/sys_ia32.c b/arch/x86/ia32/sys_ia32.c +index aec2202..f76174e 100644 +--- a/arch/x86/ia32/sys_ia32.c ++++ b/arch/x86/ia32/sys_ia32.c +@@ -69,8 +69,8 @@ asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long offset_low, + */ + static int cp_stat64(struct stat64 __user *ubuf, struct kstat *stat) + { +- typeof(ubuf->st_uid) uid = 0; +- typeof(ubuf->st_gid) gid = 0; ++ typeof(((struct stat64 *)0)->st_uid) uid = 0; ++ typeof(((struct stat64 *)0)->st_gid) gid = 0; + SET_UID(uid, stat->uid); + SET_GID(gid, stat->gid); + if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct stat64)) || +@@ -292,7 +292,7 @@ asmlinkage long sys32_alarm(unsigned int seconds) + return alarm_setitimer(seconds); + } + +-asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, ++asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int __user *stat_addr, + int options) + { + return compat_sys_wait4(pid, stat_addr, options, NULL); +@@ -313,7 +313,7 @@ asmlinkage long sys32_sched_rr_get_interval(compat_pid_t pid, + mm_segment_t old_fs = get_fs(); + + set_fs(KERNEL_DS); +- ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t); ++ ret = sys_sched_rr_get_interval(pid, (struct timespec __force_user *)&t); + set_fs(old_fs); + if (put_compat_timespec(&t, interval)) + return -EFAULT; +@@ -329,7 +329,7 @@ asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set, + mm_segment_t old_fs = get_fs(); + + set_fs(KERNEL_DS); +- ret = sys_rt_sigpending((sigset_t __user *)&s, sigsetsize); ++ ret = sys_rt_sigpending((sigset_t __force_user *)&s, sigsetsize); + set_fs(old_fs); + if (!ret) { + switch (_NSIG_WORDS) { +@@ -354,7 +354,7 @@ asmlinkage long sys32_rt_sigqueueinfo(int pid, int sig, + if (copy_siginfo_from_user32(&info, uinfo)) + return -EFAULT; + set_fs(KERNEL_DS); +- ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *)&info); ++ ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __force_user *)&info); + set_fs(old_fs); + return ret; + } +@@ -399,7 +399,7 @@ asmlinkage long sys32_sendfile(int out_fd, int in_fd, + return -EFAULT; + + set_fs(KERNEL_DS); +- ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, ++ ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __force_user *)&of : NULL, + count); + set_fs(old_fs); + +diff --git a/arch/x86/include/asm/alternative-asm.h b/arch/x86/include/asm/alternative-asm.h +index 952bd01..7692c6f 100644 +--- a/arch/x86/include/asm/alternative-asm.h ++++ b/arch/x86/include/asm/alternative-asm.h +@@ -15,6 +15,45 @@ + .endm + #endif + ++#ifdef KERNEXEC_PLUGIN ++ .macro pax_force_retaddr_bts rip=0 ++ btsq $63,\rip(%rsp) ++ .endm ++#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_BTS ++ .macro pax_force_retaddr rip=0, reload=0 ++ btsq $63,\rip(%rsp) ++ .endm ++ .macro pax_force_fptr ptr ++ btsq $63,\ptr ++ .endm ++ .macro pax_set_fptr_mask ++ .endm ++#endif ++#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR ++ .macro pax_force_retaddr rip=0, reload=0 ++ .if \reload ++ pax_set_fptr_mask ++ .endif ++ orq %r10,\rip(%rsp) ++ .endm ++ .macro pax_force_fptr ptr ++ orq %r10,\ptr ++ .endm ++ .macro pax_set_fptr_mask ++ movabs $0x8000000000000000,%r10 ++ .endm ++#endif ++#else ++ .macro pax_force_retaddr rip=0, reload=0 ++ .endm ++ .macro pax_force_fptr ptr ++ .endm ++ .macro pax_force_retaddr_bts rip=0 ++ .endm ++ .macro pax_set_fptr_mask ++ .endm ++#endif ++ + .macro altinstruction_entry orig alt feature orig_len alt_len + .long \orig - . + .long \alt - . +diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h +index 49331be..9706065 100644 +--- a/arch/x86/include/asm/alternative.h ++++ b/arch/x86/include/asm/alternative.h +@@ -89,7 +89,7 @@ static inline int alternatives_text_reserved(void *start, void *end) + ".section .discard,\"aw\",@progbits\n" \ + " .byte 0xff + (664f-663f) - (662b-661b)\n" /* rlen <= slen */ \ + ".previous\n" \ +- ".section .altinstr_replacement, \"ax\"\n" \ ++ ".section .altinstr_replacement, \"a\"\n" \ + "663:\n\t" newinstr "\n664:\n" /* replacement */ \ + ".previous" + +diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h +index d854101..f6ea947 100644 +--- a/arch/x86/include/asm/apic.h ++++ b/arch/x86/include/asm/apic.h +@@ -44,7 +44,7 @@ static inline void generic_apic_probe(void) + + #ifdef CONFIG_X86_LOCAL_APIC + +-extern unsigned int apic_verbosity; ++extern int apic_verbosity; + extern int local_apic_timer_c2_ok; + + extern int disable_apic; +diff --git a/arch/x86/include/asm/apm.h b/arch/x86/include/asm/apm.h +index 20370c6..a2eb9b0 100644 +--- a/arch/x86/include/asm/apm.h ++++ b/arch/x86/include/asm/apm.h +@@ -34,7 +34,7 @@ static inline void apm_bios_call_asm(u32 func, u32 ebx_in, u32 ecx_in, + __asm__ __volatile__(APM_DO_ZERO_SEGS + "pushl %%edi\n\t" + "pushl %%ebp\n\t" +- "lcall *%%cs:apm_bios_entry\n\t" ++ "lcall *%%ss:apm_bios_entry\n\t" + "setc %%al\n\t" + "popl %%ebp\n\t" + "popl %%edi\n\t" +@@ -58,7 +58,7 @@ static inline u8 apm_bios_call_simple_asm(u32 func, u32 ebx_in, + __asm__ __volatile__(APM_DO_ZERO_SEGS + "pushl %%edi\n\t" + "pushl %%ebp\n\t" +- "lcall *%%cs:apm_bios_entry\n\t" ++ "lcall *%%ss:apm_bios_entry\n\t" + "setc %%bl\n\t" + "popl %%ebp\n\t" + "popl %%edi\n\t" +diff --git a/arch/x86/include/asm/atomic.h b/arch/x86/include/asm/atomic.h +index 58cb6d4..ca9010d 100644 +--- a/arch/x86/include/asm/atomic.h ++++ b/arch/x86/include/asm/atomic.h +@@ -22,7 +22,18 @@ + */ + static inline int atomic_read(const atomic_t *v) + { +- return (*(volatile int *)&(v)->counter); ++ return (*(volatile const int *)&(v)->counter); ++} ++ ++/** ++ * atomic_read_unchecked - read atomic variable ++ * @v: pointer of type atomic_unchecked_t ++ * ++ * Atomically reads the value of @v. ++ */ ++static inline int atomic_read_unchecked(const atomic_unchecked_t *v) ++{ ++ return (*(volatile const int *)&(v)->counter); + } + + /** +@@ -38,6 +49,18 @@ static inline void atomic_set(atomic_t *v, int i) + } + + /** ++ * atomic_set_unchecked - set atomic variable ++ * @v: pointer of type atomic_unchecked_t ++ * @i: required value ++ * ++ * Atomically sets the value of @v to @i. ++ */ ++static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i) ++{ ++ v->counter = i; ++} ++ ++/** + * atomic_add - add integer to atomic variable + * @i: integer value to add + * @v: pointer of type atomic_t +@@ -46,7 +69,29 @@ static inline void atomic_set(atomic_t *v, int i) + */ + static inline void atomic_add(int i, atomic_t *v) + { +- asm volatile(LOCK_PREFIX "addl %1,%0" ++ asm volatile(LOCK_PREFIX "addl %1,%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX "subl %1,%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ : "+m" (v->counter) ++ : "ir" (i)); ++} ++ ++/** ++ * atomic_add_unchecked - add integer to atomic variable ++ * @i: integer value to add ++ * @v: pointer of type atomic_unchecked_t ++ * ++ * Atomically adds @i to @v. ++ */ ++static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v) ++{ ++ asm volatile(LOCK_PREFIX "addl %1,%0\n" + : "+m" (v->counter) + : "ir" (i)); + } +@@ -60,7 +105,29 @@ static inline void atomic_add(int i, atomic_t *v) + */ + static inline void atomic_sub(int i, atomic_t *v) + { +- asm volatile(LOCK_PREFIX "subl %1,%0" ++ asm volatile(LOCK_PREFIX "subl %1,%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX "addl %1,%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ : "+m" (v->counter) ++ : "ir" (i)); ++} ++ ++/** ++ * atomic_sub_unchecked - subtract integer from atomic variable ++ * @i: integer value to subtract ++ * @v: pointer of type atomic_unchecked_t ++ * ++ * Atomically subtracts @i from @v. ++ */ ++static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v) ++{ ++ asm volatile(LOCK_PREFIX "subl %1,%0\n" + : "+m" (v->counter) + : "ir" (i)); + } +@@ -78,7 +145,16 @@ static inline int atomic_sub_and_test(int i, atomic_t *v) + { + unsigned char c; + +- asm volatile(LOCK_PREFIX "subl %2,%0; sete %1" ++ asm volatile(LOCK_PREFIX "subl %2,%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX "addl %2,%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ "sete %1\n" + : "+m" (v->counter), "=qm" (c) + : "ir" (i) : "memory"); + return c; +@@ -92,7 +168,27 @@ static inline int atomic_sub_and_test(int i, atomic_t *v) + */ + static inline void atomic_inc(atomic_t *v) + { +- asm volatile(LOCK_PREFIX "incl %0" ++ asm volatile(LOCK_PREFIX "incl %0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX "decl %0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ : "+m" (v->counter)); ++} ++ ++/** ++ * atomic_inc_unchecked - increment atomic variable ++ * @v: pointer of type atomic_unchecked_t ++ * ++ * Atomically increments @v by 1. ++ */ ++static inline void atomic_inc_unchecked(atomic_unchecked_t *v) ++{ ++ asm volatile(LOCK_PREFIX "incl %0\n" + : "+m" (v->counter)); + } + +@@ -104,7 +200,27 @@ static inline void atomic_inc(atomic_t *v) + */ + static inline void atomic_dec(atomic_t *v) + { +- asm volatile(LOCK_PREFIX "decl %0" ++ asm volatile(LOCK_PREFIX "decl %0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX "incl %0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ : "+m" (v->counter)); ++} ++ ++/** ++ * atomic_dec_unchecked - decrement atomic variable ++ * @v: pointer of type atomic_unchecked_t ++ * ++ * Atomically decrements @v by 1. ++ */ ++static inline void atomic_dec_unchecked(atomic_unchecked_t *v) ++{ ++ asm volatile(LOCK_PREFIX "decl %0\n" + : "+m" (v->counter)); + } + +@@ -120,7 +236,16 @@ static inline int atomic_dec_and_test(atomic_t *v) + { + unsigned char c; + +- asm volatile(LOCK_PREFIX "decl %0; sete %1" ++ asm volatile(LOCK_PREFIX "decl %0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX "incl %0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ "sete %1\n" + : "+m" (v->counter), "=qm" (c) + : : "memory"); + return c != 0; +@@ -138,7 +263,35 @@ static inline int atomic_inc_and_test(atomic_t *v) + { + unsigned char c; + +- asm volatile(LOCK_PREFIX "incl %0; sete %1" ++ asm volatile(LOCK_PREFIX "incl %0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX "decl %0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ "sete %1\n" ++ : "+m" (v->counter), "=qm" (c) ++ : : "memory"); ++ return c != 0; ++} ++ ++/** ++ * atomic_inc_and_test_unchecked - increment and test ++ * @v: pointer of type atomic_unchecked_t ++ * ++ * Atomically increments @v by 1 ++ * and returns true if the result is zero, or false for all ++ * other cases. ++ */ ++static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v) ++{ ++ unsigned char c; ++ ++ asm volatile(LOCK_PREFIX "incl %0\n" ++ "sete %1\n" + : "+m" (v->counter), "=qm" (c) + : : "memory"); + return c != 0; +@@ -157,7 +310,16 @@ static inline int atomic_add_negative(int i, atomic_t *v) + { + unsigned char c; + +- asm volatile(LOCK_PREFIX "addl %2,%0; sets %1" ++ asm volatile(LOCK_PREFIX "addl %2,%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX "subl %2,%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ "sets %1\n" + : "+m" (v->counter), "=qm" (c) + : "ir" (i) : "memory"); + return c; +@@ -179,7 +341,7 @@ static inline int atomic_add_return(int i, atomic_t *v) + goto no_xadd; + #endif + /* Modern 486+ processor */ +- return i + xadd(&v->counter, i); ++ return i + xadd_check_overflow(&v->counter, i); + + #ifdef CONFIG_M386 + no_xadd: /* Legacy 386 processor */ +@@ -192,6 +354,34 @@ no_xadd: /* Legacy 386 processor */ + } + + /** ++ * atomic_add_return_unchecked - add integer and return ++ * @i: integer value to add ++ * @v: pointer of type atomic_unchecked_t ++ * ++ * Atomically adds @i to @v and returns @i + @v ++ */ ++static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v) ++{ ++#ifdef CONFIG_M386 ++ int __i; ++ unsigned long flags; ++ if (unlikely(boot_cpu_data.x86 <= 3)) ++ goto no_xadd; ++#endif ++ /* Modern 486+ processor */ ++ return i + xadd(&v->counter, i); ++ ++#ifdef CONFIG_M386 ++no_xadd: /* Legacy 386 processor */ ++ raw_local_irq_save(flags); ++ __i = atomic_read_unchecked(v); ++ atomic_set_unchecked(v, i + __i); ++ raw_local_irq_restore(flags); ++ return i + __i; ++#endif ++} ++ ++/** + * atomic_sub_return - subtract integer and return + * @v: pointer of type atomic_t + * @i: integer value to subtract +@@ -204,6 +394,10 @@ static inline int atomic_sub_return(int i, atomic_t *v) + } + + #define atomic_inc_return(v) (atomic_add_return(1, v)) ++static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v) ++{ ++ return atomic_add_return_unchecked(1, v); ++} + #define atomic_dec_return(v) (atomic_sub_return(1, v)) + + static inline int atomic_cmpxchg(atomic_t *v, int old, int new) +@@ -211,11 +405,21 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new) + return cmpxchg(&v->counter, old, new); + } + ++static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new) ++{ ++ return cmpxchg(&v->counter, old, new); ++} ++ + static inline int atomic_xchg(atomic_t *v, int new) + { + return xchg(&v->counter, new); + } + ++static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new) ++{ ++ return xchg(&v->counter, new); ++} ++ + /** + * __atomic_add_unless - add unless the number is already a given value + * @v: pointer of type atomic_t +@@ -227,12 +431,25 @@ static inline int atomic_xchg(atomic_t *v, int new) + */ + static inline int __atomic_add_unless(atomic_t *v, int a, int u) + { +- int c, old; ++ int c, old, new; + c = atomic_read(v); + for (;;) { +- if (unlikely(c == (u))) ++ if (unlikely(c == u)) + break; +- old = atomic_cmpxchg((v), c, c + (a)); ++ ++ asm volatile("addl %2,%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ "subl %2,%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ : "=r" (new) ++ : "0" (c), "ir" (a)); ++ ++ old = atomic_cmpxchg(v, c, new); + if (likely(old == c)) + break; + c = old; +@@ -240,6 +457,48 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u) + return c; + } + ++/** ++ * atomic_inc_not_zero_hint - increment if not null ++ * @v: pointer of type atomic_t ++ * @hint: probable value of the atomic before the increment ++ * ++ * This version of atomic_inc_not_zero() gives a hint of probable ++ * value of the atomic. This helps processor to not read the memory ++ * before doing the atomic read/modify/write cycle, lowering ++ * number of bus transactions on some arches. ++ * ++ * Returns: 0 if increment was not done, 1 otherwise. ++ */ ++#define atomic_inc_not_zero_hint atomic_inc_not_zero_hint ++static inline int atomic_inc_not_zero_hint(atomic_t *v, int hint) ++{ ++ int val, c = hint, new; ++ ++ /* sanity test, should be removed by compiler if hint is a constant */ ++ if (!hint) ++ return __atomic_add_unless(v, 1, 0); ++ ++ do { ++ asm volatile("incl %0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ "decl %0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ : "=r" (new) ++ : "0" (c)); ++ ++ val = atomic_cmpxchg(v, c, new); ++ if (val == c) ++ return 1; ++ c = val; ++ } while (c); ++ ++ return 0; ++} + + /* + * atomic_dec_if_positive - decrement by 1 if old value positive +diff --git a/arch/x86/include/asm/atomic64_32.h b/arch/x86/include/asm/atomic64_32.h +index 1981199..36b9dfb 100644 +--- a/arch/x86/include/asm/atomic64_32.h ++++ b/arch/x86/include/asm/atomic64_32.h +@@ -12,6 +12,14 @@ typedef struct { + u64 __aligned(8) counter; + } atomic64_t; + ++#ifdef CONFIG_PAX_REFCOUNT ++typedef struct { ++ u64 __aligned(8) counter; ++} atomic64_unchecked_t; ++#else ++typedef atomic64_t atomic64_unchecked_t; ++#endif ++ + #define ATOMIC64_INIT(val) { (val) } + + #define __ATOMIC64_DECL(sym) void atomic64_##sym(atomic64_t *, ...) +@@ -37,21 +45,31 @@ typedef struct { + ATOMIC64_DECL_ONE(sym##_386) + + ATOMIC64_DECL_ONE(add_386); ++ATOMIC64_DECL_ONE(add_unchecked_386); + ATOMIC64_DECL_ONE(sub_386); ++ATOMIC64_DECL_ONE(sub_unchecked_386); + ATOMIC64_DECL_ONE(inc_386); ++ATOMIC64_DECL_ONE(inc_unchecked_386); + ATOMIC64_DECL_ONE(dec_386); ++ATOMIC64_DECL_ONE(dec_unchecked_386); + #endif + + #define alternative_atomic64(f, out, in...) \ + __alternative_atomic64(f, f, ASM_OUTPUT2(out), ## in) + + ATOMIC64_DECL(read); ++ATOMIC64_DECL(read_unchecked); + ATOMIC64_DECL(set); ++ATOMIC64_DECL(set_unchecked); + ATOMIC64_DECL(xchg); + ATOMIC64_DECL(add_return); ++ATOMIC64_DECL(add_return_unchecked); + ATOMIC64_DECL(sub_return); ++ATOMIC64_DECL(sub_return_unchecked); + ATOMIC64_DECL(inc_return); ++ATOMIC64_DECL(inc_return_unchecked); + ATOMIC64_DECL(dec_return); ++ATOMIC64_DECL(dec_return_unchecked); + ATOMIC64_DECL(dec_if_positive); + ATOMIC64_DECL(inc_not_zero); + ATOMIC64_DECL(add_unless); +@@ -77,6 +95,21 @@ static inline long long atomic64_cmpxchg(atomic64_t *v, long long o, long long n + } + + /** ++ * atomic64_cmpxchg_unchecked - cmpxchg atomic64 variable ++ * @p: pointer to type atomic64_unchecked_t ++ * @o: expected value ++ * @n: new value ++ * ++ * Atomically sets @v to @n if it was equal to @o and returns ++ * the old value. ++ */ ++ ++static inline long long atomic64_cmpxchg_unchecked(atomic64_unchecked_t *v, long long o, long long n) ++{ ++ return cmpxchg64(&v->counter, o, n); ++} ++ ++/** + * atomic64_xchg - xchg atomic64 variable + * @v: pointer to type atomic64_t + * @n: value to assign +@@ -112,6 +145,22 @@ static inline void atomic64_set(atomic64_t *v, long long i) + } + + /** ++ * atomic64_set_unchecked - set atomic64 variable ++ * @v: pointer to type atomic64_unchecked_t ++ * @n: value to assign ++ * ++ * Atomically sets the value of @v to @n. ++ */ ++static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long long i) ++{ ++ unsigned high = (unsigned)(i >> 32); ++ unsigned low = (unsigned)i; ++ alternative_atomic64(set, /* no output */, ++ "S" (v), "b" (low), "c" (high) ++ : "eax", "edx", "memory"); ++} ++ ++/** + * atomic64_read - read atomic64 variable + * @v: pointer to type atomic64_t + * +@@ -125,6 +174,19 @@ static inline long long atomic64_read(const atomic64_t *v) + } + + /** ++ * atomic64_read_unchecked - read atomic64 variable ++ * @v: pointer to type atomic64_unchecked_t ++ * ++ * Atomically reads the value of @v and returns it. ++ */ ++static inline long long atomic64_read_unchecked(atomic64_unchecked_t *v) ++{ ++ long long r; ++ alternative_atomic64(read, "=&A" (r), "c" (v) : "memory"); ++ return r; ++ } ++ ++/** + * atomic64_add_return - add and return + * @i: integer value to add + * @v: pointer to type atomic64_t +@@ -139,6 +201,21 @@ static inline long long atomic64_add_return(long long i, atomic64_t *v) + return i; + } + ++/** ++ * atomic64_add_return_unchecked - add and return ++ * @i: integer value to add ++ * @v: pointer to type atomic64_unchecked_t ++ * ++ * Atomically adds @i to @v and returns @i + *@v ++ */ ++static inline long long atomic64_add_return_unchecked(long long i, atomic64_unchecked_t *v) ++{ ++ alternative_atomic64(add_return_unchecked, ++ ASM_OUTPUT2("+A" (i), "+c" (v)), ++ ASM_NO_INPUT_CLOBBER("memory")); ++ return i; ++} ++ + /* + * Other variants with different arithmetic operators: + */ +@@ -158,6 +235,14 @@ static inline long long atomic64_inc_return(atomic64_t *v) + return a; + } + ++static inline long long atomic64_inc_return_unchecked(atomic64_unchecked_t *v) ++{ ++ long long a; ++ alternative_atomic64(inc_return_unchecked, "=&A" (a), ++ "S" (v) : "memory", "ecx"); ++ return a; ++} ++ + static inline long long atomic64_dec_return(atomic64_t *v) + { + long long a; +@@ -182,6 +267,21 @@ static inline long long atomic64_add(long long i, atomic64_t *v) + } + + /** ++ * atomic64_add_unchecked - add integer to atomic64 variable ++ * @i: integer value to add ++ * @v: pointer to type atomic64_unchecked_t ++ * ++ * Atomically adds @i to @v. ++ */ ++static inline long long atomic64_add_unchecked(long long i, atomic64_unchecked_t *v) ++{ ++ __alternative_atomic64(add_unchecked, add_return_unchecked, ++ ASM_OUTPUT2("+A" (i), "+c" (v)), ++ ASM_NO_INPUT_CLOBBER("memory")); ++ return i; ++} ++ ++/** + * atomic64_sub - subtract the atomic64 variable + * @i: integer value to subtract + * @v: pointer to type atomic64_t +diff --git a/arch/x86/include/asm/atomic64_64.h b/arch/x86/include/asm/atomic64_64.h +index 0e1cbfc..5623683 100644 +--- a/arch/x86/include/asm/atomic64_64.h ++++ b/arch/x86/include/asm/atomic64_64.h +@@ -18,7 +18,19 @@ + */ + static inline long atomic64_read(const atomic64_t *v) + { +- return (*(volatile long *)&(v)->counter); ++ return (*(volatile const long *)&(v)->counter); ++} ++ ++/** ++ * atomic64_read_unchecked - read atomic64 variable ++ * @v: pointer of type atomic64_unchecked_t ++ * ++ * Atomically reads the value of @v. ++ * Doesn't imply a read memory barrier. ++ */ ++static inline long atomic64_read_unchecked(const atomic64_unchecked_t *v) ++{ ++ return (*(volatile const long *)&(v)->counter); + } + + /** +@@ -34,6 +46,18 @@ static inline void atomic64_set(atomic64_t *v, long i) + } + + /** ++ * atomic64_set_unchecked - set atomic64 variable ++ * @v: pointer to type atomic64_unchecked_t ++ * @i: required value ++ * ++ * Atomically sets the value of @v to @i. ++ */ ++static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long i) ++{ ++ v->counter = i; ++} ++ ++/** + * atomic64_add - add integer to atomic64 variable + * @i: integer value to add + * @v: pointer to type atomic64_t +@@ -42,6 +66,28 @@ static inline void atomic64_set(atomic64_t *v, long i) + */ + static inline void atomic64_add(long i, atomic64_t *v) + { ++ asm volatile(LOCK_PREFIX "addq %1,%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX "subq %1,%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ : "=m" (v->counter) ++ : "er" (i), "m" (v->counter)); ++} ++ ++/** ++ * atomic64_add_unchecked - add integer to atomic64 variable ++ * @i: integer value to add ++ * @v: pointer to type atomic64_unchecked_t ++ * ++ * Atomically adds @i to @v. ++ */ ++static inline void atomic64_add_unchecked(long i, atomic64_unchecked_t *v) ++{ + asm volatile(LOCK_PREFIX "addq %1,%0" + : "=m" (v->counter) + : "er" (i), "m" (v->counter)); +@@ -56,7 +102,29 @@ static inline void atomic64_add(long i, atomic64_t *v) + */ + static inline void atomic64_sub(long i, atomic64_t *v) + { +- asm volatile(LOCK_PREFIX "subq %1,%0" ++ asm volatile(LOCK_PREFIX "subq %1,%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX "addq %1,%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ : "=m" (v->counter) ++ : "er" (i), "m" (v->counter)); ++} ++ ++/** ++ * atomic64_sub_unchecked - subtract the atomic64 variable ++ * @i: integer value to subtract ++ * @v: pointer to type atomic64_unchecked_t ++ * ++ * Atomically subtracts @i from @v. ++ */ ++static inline void atomic64_sub_unchecked(long i, atomic64_unchecked_t *v) ++{ ++ asm volatile(LOCK_PREFIX "subq %1,%0\n" + : "=m" (v->counter) + : "er" (i), "m" (v->counter)); + } +@@ -74,7 +142,16 @@ static inline int atomic64_sub_and_test(long i, atomic64_t *v) + { + unsigned char c; + +- asm volatile(LOCK_PREFIX "subq %2,%0; sete %1" ++ asm volatile(LOCK_PREFIX "subq %2,%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX "addq %2,%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ "sete %1\n" + : "=m" (v->counter), "=qm" (c) + : "er" (i), "m" (v->counter) : "memory"); + return c; +@@ -88,6 +165,27 @@ static inline int atomic64_sub_and_test(long i, atomic64_t *v) + */ + static inline void atomic64_inc(atomic64_t *v) + { ++ asm volatile(LOCK_PREFIX "incq %0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX "decq %0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ : "=m" (v->counter) ++ : "m" (v->counter)); ++} ++ ++/** ++ * atomic64_inc_unchecked - increment atomic64 variable ++ * @v: pointer to type atomic64_unchecked_t ++ * ++ * Atomically increments @v by 1. ++ */ ++static inline void atomic64_inc_unchecked(atomic64_unchecked_t *v) ++{ + asm volatile(LOCK_PREFIX "incq %0" + : "=m" (v->counter) + : "m" (v->counter)); +@@ -101,7 +199,28 @@ static inline void atomic64_inc(atomic64_t *v) + */ + static inline void atomic64_dec(atomic64_t *v) + { +- asm volatile(LOCK_PREFIX "decq %0" ++ asm volatile(LOCK_PREFIX "decq %0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX "incq %0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ : "=m" (v->counter) ++ : "m" (v->counter)); ++} ++ ++/** ++ * atomic64_dec_unchecked - decrement atomic64 variable ++ * @v: pointer to type atomic64_t ++ * ++ * Atomically decrements @v by 1. ++ */ ++static inline void atomic64_dec_unchecked(atomic64_unchecked_t *v) ++{ ++ asm volatile(LOCK_PREFIX "decq %0\n" + : "=m" (v->counter) + : "m" (v->counter)); + } +@@ -118,7 +237,16 @@ static inline int atomic64_dec_and_test(atomic64_t *v) + { + unsigned char c; + +- asm volatile(LOCK_PREFIX "decq %0; sete %1" ++ asm volatile(LOCK_PREFIX "decq %0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX "incq %0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ "sete %1\n" + : "=m" (v->counter), "=qm" (c) + : "m" (v->counter) : "memory"); + return c != 0; +@@ -136,7 +264,16 @@ static inline int atomic64_inc_and_test(atomic64_t *v) + { + unsigned char c; + +- asm volatile(LOCK_PREFIX "incq %0; sete %1" ++ asm volatile(LOCK_PREFIX "incq %0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX "decq %0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ "sete %1\n" + : "=m" (v->counter), "=qm" (c) + : "m" (v->counter) : "memory"); + return c != 0; +@@ -155,7 +292,16 @@ static inline int atomic64_add_negative(long i, atomic64_t *v) + { + unsigned char c; + +- asm volatile(LOCK_PREFIX "addq %2,%0; sets %1" ++ asm volatile(LOCK_PREFIX "addq %2,%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX "subq %2,%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ "sets %1\n" + : "=m" (v->counter), "=qm" (c) + : "er" (i), "m" (v->counter) : "memory"); + return c; +@@ -170,6 +316,18 @@ static inline int atomic64_add_negative(long i, atomic64_t *v) + */ + static inline long atomic64_add_return(long i, atomic64_t *v) + { ++ return i + xadd_check_overflow(&v->counter, i); ++} ++ ++/** ++ * atomic64_add_return_unchecked - add and return ++ * @i: integer value to add ++ * @v: pointer to type atomic64_unchecked_t ++ * ++ * Atomically adds @i to @v and returns @i + @v ++ */ ++static inline long atomic64_add_return_unchecked(long i, atomic64_unchecked_t *v) ++{ + return i + xadd(&v->counter, i); + } + +@@ -179,6 +337,10 @@ static inline long atomic64_sub_return(long i, atomic64_t *v) + } + + #define atomic64_inc_return(v) (atomic64_add_return(1, (v))) ++static inline long atomic64_inc_return_unchecked(atomic64_unchecked_t *v) ++{ ++ return atomic64_add_return_unchecked(1, v); ++} + #define atomic64_dec_return(v) (atomic64_sub_return(1, (v))) + + static inline long atomic64_cmpxchg(atomic64_t *v, long old, long new) +@@ -186,6 +348,11 @@ static inline long atomic64_cmpxchg(atomic64_t *v, long old, long new) + return cmpxchg(&v->counter, old, new); + } + ++static inline long atomic64_cmpxchg_unchecked(atomic64_unchecked_t *v, long old, long new) ++{ ++ return cmpxchg(&v->counter, old, new); ++} ++ + static inline long atomic64_xchg(atomic64_t *v, long new) + { + return xchg(&v->counter, new); +@@ -202,17 +369,30 @@ static inline long atomic64_xchg(atomic64_t *v, long new) + */ + static inline int atomic64_add_unless(atomic64_t *v, long a, long u) + { +- long c, old; ++ long c, old, new; + c = atomic64_read(v); + for (;;) { +- if (unlikely(c == (u))) ++ if (unlikely(c == u)) + break; +- old = atomic64_cmpxchg((v), c, c + (a)); ++ ++ asm volatile("add %2,%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ "sub %2,%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ : "=r" (new) ++ : "0" (c), "ir" (a)); ++ ++ old = atomic64_cmpxchg(v, c, new); + if (likely(old == c)) + break; + c = old; + } +- return c != (u); ++ return c != u; + } + + #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) +diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h +index b97596e..9bd48b06 100644 +--- a/arch/x86/include/asm/bitops.h ++++ b/arch/x86/include/asm/bitops.h +@@ -38,7 +38,7 @@ + * a mask operation on a byte. + */ + #define IS_IMMEDIATE(nr) (__builtin_constant_p(nr)) +-#define CONST_MASK_ADDR(nr, addr) BITOP_ADDR((void *)(addr) + ((nr)>>3)) ++#define CONST_MASK_ADDR(nr, addr) BITOP_ADDR((volatile void *)(addr) + ((nr)>>3)) + #define CONST_MASK(nr) (1 << ((nr) & 7)) + + /** +diff --git a/arch/x86/include/asm/boot.h b/arch/x86/include/asm/boot.h +index 5e1a2ee..c9f9533 100644 +--- a/arch/x86/include/asm/boot.h ++++ b/arch/x86/include/asm/boot.h +@@ -11,10 +11,15 @@ + #include <asm/pgtable_types.h> + + /* Physical address where kernel should be loaded. */ +-#define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \ ++#define ____LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \ + + (CONFIG_PHYSICAL_ALIGN - 1)) \ + & ~(CONFIG_PHYSICAL_ALIGN - 1)) + ++#ifndef __ASSEMBLY__ ++extern unsigned char __LOAD_PHYSICAL_ADDR[]; ++#define LOAD_PHYSICAL_ADDR ((unsigned long)__LOAD_PHYSICAL_ADDR) ++#endif ++ + /* Minimum kernel alignment, as a power of two */ + #ifdef CONFIG_X86_64 + #define MIN_KERNEL_ALIGN_LG2 PMD_SHIFT +diff --git a/arch/x86/include/asm/cache.h b/arch/x86/include/asm/cache.h +index 48f99f1..d78ebf9 100644 +--- a/arch/x86/include/asm/cache.h ++++ b/arch/x86/include/asm/cache.h +@@ -5,12 +5,13 @@ + + /* L1 cache line size */ + #define L1_CACHE_SHIFT (CONFIG_X86_L1_CACHE_SHIFT) +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) + + #define __read_mostly __attribute__((__section__(".data..read_mostly"))) ++#define __read_only __attribute__((__section__(".data..read_only"))) + + #define INTERNODE_CACHE_SHIFT CONFIG_X86_INTERNODE_CACHE_SHIFT +-#define INTERNODE_CACHE_BYTES (1 << INTERNODE_CACHE_SHIFT) ++#define INTERNODE_CACHE_BYTES (_AC(1,UL) << INTERNODE_CACHE_SHIFT) + + #ifdef CONFIG_X86_VSMP + #ifdef CONFIG_SMP +diff --git a/arch/x86/include/asm/cacheflush.h b/arch/x86/include/asm/cacheflush.h +index 9863ee3..4a1f8e1 100644 +--- a/arch/x86/include/asm/cacheflush.h ++++ b/arch/x86/include/asm/cacheflush.h +@@ -27,7 +27,7 @@ static inline unsigned long get_page_memtype(struct page *pg) + unsigned long pg_flags = pg->flags & _PGMT_MASK; + + if (pg_flags == _PGMT_DEFAULT) +- return -1; ++ return ~0UL; + else if (pg_flags == _PGMT_WC) + return _PAGE_CACHE_WC; + else if (pg_flags == _PGMT_UC_MINUS) +diff --git a/arch/x86/include/asm/checksum_32.h b/arch/x86/include/asm/checksum_32.h +index 46fc474..b02b0f9 100644 +--- a/arch/x86/include/asm/checksum_32.h ++++ b/arch/x86/include/asm/checksum_32.h +@@ -31,6 +31,14 @@ asmlinkage __wsum csum_partial_copy_generic(const void *src, void *dst, + int len, __wsum sum, + int *src_err_ptr, int *dst_err_ptr); + ++asmlinkage __wsum csum_partial_copy_generic_to_user(const void *src, void *dst, ++ int len, __wsum sum, ++ int *src_err_ptr, int *dst_err_ptr); ++ ++asmlinkage __wsum csum_partial_copy_generic_from_user(const void *src, void *dst, ++ int len, __wsum sum, ++ int *src_err_ptr, int *dst_err_ptr); ++ + /* + * Note: when you get a NULL pointer exception here this means someone + * passed in an incorrect kernel address to one of these functions. +@@ -50,7 +58,7 @@ static inline __wsum csum_partial_copy_from_user(const void __user *src, + int *err_ptr) + { + might_sleep(); +- return csum_partial_copy_generic((__force void *)src, dst, ++ return csum_partial_copy_generic_from_user((__force void *)src, dst, + len, sum, err_ptr, NULL); + } + +@@ -178,7 +186,7 @@ static inline __wsum csum_and_copy_to_user(const void *src, + { + might_sleep(); + if (access_ok(VERIFY_WRITE, dst, len)) +- return csum_partial_copy_generic(src, (__force void *)dst, ++ return csum_partial_copy_generic_to_user(src, (__force void *)dst, + len, sum, NULL, err_ptr); + + if (len) +diff --git a/arch/x86/include/asm/cmpxchg.h b/arch/x86/include/asm/cmpxchg.h +index 99480e5..d81165b 100644 +--- a/arch/x86/include/asm/cmpxchg.h ++++ b/arch/x86/include/asm/cmpxchg.h +@@ -14,8 +14,12 @@ extern void __cmpxchg_wrong_size(void) + __compiletime_error("Bad argument size for cmpxchg"); + extern void __xadd_wrong_size(void) + __compiletime_error("Bad argument size for xadd"); ++extern void __xadd_check_overflow_wrong_size(void) ++ __compiletime_error("Bad argument size for xadd_check_overflow"); + extern void __add_wrong_size(void) + __compiletime_error("Bad argument size for add"); ++extern void __add_check_overflow_wrong_size(void) ++ __compiletime_error("Bad argument size for add_check_overflow"); + + /* + * Constants for operation sizes. On 32-bit, the 64-bit size it set to +@@ -67,6 +71,34 @@ extern void __add_wrong_size(void) + __ret; \ + }) + ++#define __xchg_op_check_overflow(ptr, arg, op, lock) \ ++ ({ \ ++ __typeof__ (*(ptr)) __ret = (arg); \ ++ switch (sizeof(*(ptr))) { \ ++ case __X86_CASE_L: \ ++ asm volatile (lock #op "l %0, %1\n" \ ++ "jno 0f\n" \ ++ "mov %0,%1\n" \ ++ "int $4\n0:\n" \ ++ _ASM_EXTABLE(0b, 0b) \ ++ : "+r" (__ret), "+m" (*(ptr)) \ ++ : : "memory", "cc"); \ ++ break; \ ++ case __X86_CASE_Q: \ ++ asm volatile (lock #op "q %q0, %1\n" \ ++ "jno 0f\n" \ ++ "mov %0,%1\n" \ ++ "int $4\n0:\n" \ ++ _ASM_EXTABLE(0b, 0b) \ ++ : "+r" (__ret), "+m" (*(ptr)) \ ++ : : "memory", "cc"); \ ++ break; \ ++ default: \ ++ __ ## op ## _check_overflow_wrong_size(); \ ++ } \ ++ __ret; \ ++ }) ++ + /* + * Note: no "lock" prefix even on SMP: xchg always implies lock anyway. + * Since this is generally used to protect other memory information, we +@@ -167,6 +199,9 @@ extern void __add_wrong_size(void) + #define xadd_sync(ptr, inc) __xadd((ptr), (inc), "lock; ") + #define xadd_local(ptr, inc) __xadd((ptr), (inc), "") + ++#define __xadd_check_overflow(ptr, inc, lock) __xchg_op_check_overflow((ptr), (inc), xadd, lock) ++#define xadd_check_overflow(ptr, inc) __xadd_check_overflow((ptr), (inc), LOCK_PREFIX) ++ + #define __add(ptr, inc, lock) \ + ({ \ + __typeof__ (*(ptr)) __ret = (inc); \ +diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h +index f91e80f..7f9bd27 100644 +--- a/arch/x86/include/asm/cpufeature.h ++++ b/arch/x86/include/asm/cpufeature.h +@@ -371,7 +371,7 @@ static __always_inline __pure bool __static_cpu_has(u16 bit) + ".section .discard,\"aw\",@progbits\n" + " .byte 0xff + (4f-3f) - (2b-1b)\n" /* size check */ + ".previous\n" +- ".section .altinstr_replacement,\"ax\"\n" ++ ".section .altinstr_replacement,\"a\"\n" + "3: movb $1,%0\n" + "4:\n" + ".previous\n" +diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h +index e95822d..a90010e 100644 +--- a/arch/x86/include/asm/desc.h ++++ b/arch/x86/include/asm/desc.h +@@ -4,6 +4,7 @@ + #include <asm/desc_defs.h> + #include <asm/ldt.h> + #include <asm/mmu.h> ++#include <asm/pgtable.h> + + #include <linux/smp.h> + +@@ -16,6 +17,7 @@ static inline void fill_ldt(struct desc_struct *desc, const struct user_desc *in + + desc->type = (info->read_exec_only ^ 1) << 1; + desc->type |= info->contents << 2; ++ desc->type |= info->seg_not_present ^ 1; + + desc->s = 1; + desc->dpl = 0x3; +@@ -34,19 +36,14 @@ static inline void fill_ldt(struct desc_struct *desc, const struct user_desc *in + } + + extern struct desc_ptr idt_descr; +-extern gate_desc idt_table[]; + extern struct desc_ptr nmi_idt_descr; +-extern gate_desc nmi_idt_table[]; +- +-struct gdt_page { +- struct desc_struct gdt[GDT_ENTRIES]; +-} __attribute__((aligned(PAGE_SIZE))); +- +-DECLARE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page); ++extern gate_desc idt_table[256]; ++extern gate_desc nmi_idt_table[256]; + ++extern struct desc_struct cpu_gdt_table[NR_CPUS][PAGE_SIZE / sizeof(struct desc_struct)]; + static inline struct desc_struct *get_cpu_gdt_table(unsigned int cpu) + { +- return per_cpu(gdt_page, cpu).gdt; ++ return cpu_gdt_table[cpu]; + } + + #ifdef CONFIG_X86_64 +@@ -71,8 +68,14 @@ static inline void pack_gate(gate_desc *gate, unsigned char type, + unsigned long base, unsigned dpl, unsigned flags, + unsigned short seg) + { +- gate->a = (seg << 16) | (base & 0xffff); +- gate->b = (base & 0xffff0000) | (((0x80 | type | (dpl << 5)) & 0xff) << 8); ++ gate->gate.offset_low = base; ++ gate->gate.seg = seg; ++ gate->gate.reserved = 0; ++ gate->gate.type = type; ++ gate->gate.s = 0; ++ gate->gate.dpl = dpl; ++ gate->gate.p = 1; ++ gate->gate.offset_high = base >> 16; + } + + #endif +@@ -117,12 +120,16 @@ static inline void paravirt_free_ldt(struct desc_struct *ldt, unsigned entries) + + static inline void native_write_idt_entry(gate_desc *idt, int entry, const gate_desc *gate) + { ++ pax_open_kernel(); + memcpy(&idt[entry], gate, sizeof(*gate)); ++ pax_close_kernel(); + } + + static inline void native_write_ldt_entry(struct desc_struct *ldt, int entry, const void *desc) + { ++ pax_open_kernel(); + memcpy(&ldt[entry], desc, 8); ++ pax_close_kernel(); + } + + static inline void +@@ -136,7 +143,9 @@ native_write_gdt_entry(struct desc_struct *gdt, int entry, const void *desc, int + default: size = sizeof(*gdt); break; + } + ++ pax_open_kernel(); + memcpy(&gdt[entry], desc, size); ++ pax_close_kernel(); + } + + static inline void pack_descriptor(struct desc_struct *desc, unsigned long base, +@@ -209,7 +218,9 @@ static inline void native_set_ldt(const void *addr, unsigned int entries) + + static inline void native_load_tr_desc(void) + { ++ pax_open_kernel(); + asm volatile("ltr %w0"::"q" (GDT_ENTRY_TSS*8)); ++ pax_close_kernel(); + } + + static inline void native_load_gdt(const struct desc_ptr *dtr) +@@ -246,8 +257,10 @@ static inline void native_load_tls(struct thread_struct *t, unsigned int cpu) + struct desc_struct *gdt = get_cpu_gdt_table(cpu); + unsigned int i; + ++ pax_open_kernel(); + for (i = 0; i < GDT_ENTRY_TLS_ENTRIES; i++) + gdt[GDT_ENTRY_TLS_MIN + i] = t->tls_array[i]; ++ pax_close_kernel(); + } + + #define _LDT_empty(info) \ +@@ -310,7 +323,7 @@ static inline void set_desc_limit(struct desc_struct *desc, unsigned long limit) + } + + #ifdef CONFIG_X86_64 +-static inline void set_nmi_gate(int gate, void *addr) ++static inline void set_nmi_gate(int gate, const void *addr) + { + gate_desc s; + +@@ -319,7 +332,7 @@ static inline void set_nmi_gate(int gate, void *addr) + } + #endif + +-static inline void _set_gate(int gate, unsigned type, void *addr, ++static inline void _set_gate(int gate, unsigned type, const void *addr, + unsigned dpl, unsigned ist, unsigned seg) + { + gate_desc s; +@@ -338,7 +351,7 @@ static inline void _set_gate(int gate, unsigned type, void *addr, + * Pentium F0 0F bugfix can have resulted in the mapped + * IDT being write-protected. + */ +-static inline void set_intr_gate(unsigned int n, void *addr) ++static inline void set_intr_gate(unsigned int n, const void *addr) + { + BUG_ON((unsigned)n > 0xFF); + _set_gate(n, GATE_INTERRUPT, addr, 0, 0, __KERNEL_CS); +@@ -368,19 +381,19 @@ static inline void alloc_intr_gate(unsigned int n, void *addr) + /* + * This routine sets up an interrupt gate at directory privilege level 3. + */ +-static inline void set_system_intr_gate(unsigned int n, void *addr) ++static inline void set_system_intr_gate(unsigned int n, const void *addr) + { + BUG_ON((unsigned)n > 0xFF); + _set_gate(n, GATE_INTERRUPT, addr, 0x3, 0, __KERNEL_CS); + } + +-static inline void set_system_trap_gate(unsigned int n, void *addr) ++static inline void set_system_trap_gate(unsigned int n, const void *addr) + { + BUG_ON((unsigned)n > 0xFF); + _set_gate(n, GATE_TRAP, addr, 0x3, 0, __KERNEL_CS); + } + +-static inline void set_trap_gate(unsigned int n, void *addr) ++static inline void set_trap_gate(unsigned int n, const void *addr) + { + BUG_ON((unsigned)n > 0xFF); + _set_gate(n, GATE_TRAP, addr, 0, 0, __KERNEL_CS); +@@ -389,19 +402,31 @@ static inline void set_trap_gate(unsigned int n, void *addr) + static inline void set_task_gate(unsigned int n, unsigned int gdt_entry) + { + BUG_ON((unsigned)n > 0xFF); +- _set_gate(n, GATE_TASK, (void *)0, 0, 0, (gdt_entry<<3)); ++ _set_gate(n, GATE_TASK, (const void *)0, 0, 0, (gdt_entry<<3)); + } + +-static inline void set_intr_gate_ist(int n, void *addr, unsigned ist) ++static inline void set_intr_gate_ist(int n, const void *addr, unsigned ist) + { + BUG_ON((unsigned)n > 0xFF); + _set_gate(n, GATE_INTERRUPT, addr, 0, ist, __KERNEL_CS); + } + +-static inline void set_system_intr_gate_ist(int n, void *addr, unsigned ist) ++static inline void set_system_intr_gate_ist(int n, const void *addr, unsigned ist) + { + BUG_ON((unsigned)n > 0xFF); + _set_gate(n, GATE_INTERRUPT, addr, 0x3, ist, __KERNEL_CS); + } + ++#ifdef CONFIG_X86_32 ++static inline void set_user_cs(unsigned long base, unsigned long limit, int cpu) ++{ ++ struct desc_struct d; ++ ++ if (likely(limit)) ++ limit = (limit - 1UL) >> PAGE_SHIFT; ++ pack_descriptor(&d, base, limit, 0xFB, 0xC); ++ write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_DEFAULT_USER_CS, &d, DESCTYPE_S); ++} ++#endif ++ + #endif /* _ASM_X86_DESC_H */ +diff --git a/arch/x86/include/asm/desc_defs.h b/arch/x86/include/asm/desc_defs.h +index 278441f..b95a174 100644 +--- a/arch/x86/include/asm/desc_defs.h ++++ b/arch/x86/include/asm/desc_defs.h +@@ -31,6 +31,12 @@ struct desc_struct { + unsigned base1: 8, type: 4, s: 1, dpl: 2, p: 1; + unsigned limit: 4, avl: 1, l: 1, d: 1, g: 1, base2: 8; + }; ++ struct { ++ u16 offset_low; ++ u16 seg; ++ unsigned reserved: 8, type: 4, s: 1, dpl: 2, p: 1; ++ unsigned offset_high: 16; ++ } gate; + }; + } __attribute__((packed)); + +diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h +index 3778256..c5d4fce 100644 +--- a/arch/x86/include/asm/e820.h ++++ b/arch/x86/include/asm/e820.h +@@ -69,7 +69,7 @@ struct e820map { + #define ISA_START_ADDRESS 0xa0000 + #define ISA_END_ADDRESS 0x100000 + +-#define BIOS_BEGIN 0x000a0000 ++#define BIOS_BEGIN 0x000c0000 + #define BIOS_END 0x00100000 + + #define BIOS_ROM_BASE 0xffe00000 +diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h +index 5939f44..f8845f6 100644 +--- a/arch/x86/include/asm/elf.h ++++ b/arch/x86/include/asm/elf.h +@@ -243,7 +243,25 @@ extern int force_personality32; + the loader. We need to make sure that it is out of the way of the program + that it will "exec", and that there is sufficient room for the brk. */ + ++#ifdef CONFIG_PAX_SEGMEXEC ++#define ELF_ET_DYN_BASE ((current->mm->pax_flags & MF_PAX_SEGMEXEC) ? SEGMEXEC_TASK_SIZE/3*2 : TASK_SIZE/3*2) ++#else + #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) ++#endif ++ ++#ifdef CONFIG_PAX_ASLR ++#ifdef CONFIG_X86_32 ++#define PAX_ELF_ET_DYN_BASE 0x10000000UL ++ ++#define PAX_DELTA_MMAP_LEN (current->mm->pax_flags & MF_PAX_SEGMEXEC ? 15 : 16) ++#define PAX_DELTA_STACK_LEN (current->mm->pax_flags & MF_PAX_SEGMEXEC ? 15 : 16) ++#else ++#define PAX_ELF_ET_DYN_BASE 0x400000UL ++ ++#define PAX_DELTA_MMAP_LEN ((test_thread_flag(TIF_ADDR32)) ? 16 : TASK_SIZE_MAX_SHIFT - PAGE_SHIFT - 3) ++#define PAX_DELTA_STACK_LEN ((test_thread_flag(TIF_ADDR32)) ? 16 : TASK_SIZE_MAX_SHIFT - PAGE_SHIFT - 3) ++#endif ++#endif + + /* This yields a mask that user programs can use to figure out what + instruction set this CPU supports. This could be done in user space, +@@ -296,16 +314,12 @@ do { \ + + #define ARCH_DLINFO \ + do { \ +- if (vdso_enabled) \ +- NEW_AUX_ENT(AT_SYSINFO_EHDR, \ +- (unsigned long)current->mm->context.vdso); \ ++ NEW_AUX_ENT(AT_SYSINFO_EHDR, current->mm->context.vdso); \ + } while (0) + + #define ARCH_DLINFO_X32 \ + do { \ +- if (vdso_enabled) \ +- NEW_AUX_ENT(AT_SYSINFO_EHDR, \ +- (unsigned long)current->mm->context.vdso); \ ++ NEW_AUX_ENT(AT_SYSINFO_EHDR, current->mm->context.vdso); \ + } while (0) + + #define AT_SYSINFO 32 +@@ -320,7 +334,7 @@ else \ + + #endif /* !CONFIG_X86_32 */ + +-#define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso) ++#define VDSO_CURRENT_BASE (current->mm->context.vdso) + + #define VDSO_ENTRY \ + ((unsigned long)VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall)) +@@ -336,9 +350,6 @@ extern int x32_setup_additional_pages(struct linux_binprm *bprm, + extern int syscall32_setup_pages(struct linux_binprm *, int exstack); + #define compat_arch_setup_additional_pages syscall32_setup_pages + +-extern unsigned long arch_randomize_brk(struct mm_struct *mm); +-#define arch_randomize_brk arch_randomize_brk +- + /* + * True on X86_32 or when emulating IA32 on X86_64 + */ +diff --git a/arch/x86/include/asm/emergency-restart.h b/arch/x86/include/asm/emergency-restart.h +index cc70c1c..d96d011 100644 +--- a/arch/x86/include/asm/emergency-restart.h ++++ b/arch/x86/include/asm/emergency-restart.h +@@ -15,6 +15,6 @@ enum reboot_type { + + extern enum reboot_type reboot_type; + +-extern void machine_emergency_restart(void); ++extern void machine_emergency_restart(void) __noreturn; + + #endif /* _ASM_X86_EMERGENCY_RESTART_H */ +diff --git a/arch/x86/include/asm/fpu-internal.h b/arch/x86/include/asm/fpu-internal.h +index 4fa8815..71b121a 100644 +--- a/arch/x86/include/asm/fpu-internal.h ++++ b/arch/x86/include/asm/fpu-internal.h +@@ -86,6 +86,11 @@ static inline int fxrstor_checking(struct i387_fxsave_struct *fx) + { + int err; + ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++ if ((unsigned long)fx < PAX_USER_SHADOW_BASE) ++ fx = (struct i387_fxsave_struct __user *)((void *)fx + PAX_USER_SHADOW_BASE); ++#endif ++ + /* See comment in fxsave() below. */ + #ifdef CONFIG_AS_FXSAVEQ + asm volatile("1: fxrstorq %[fx]\n\t" +@@ -115,6 +120,11 @@ static inline int fxsave_user(struct i387_fxsave_struct __user *fx) + { + int err; + ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++ if ((unsigned long)fx < PAX_USER_SHADOW_BASE) ++ fx = (struct i387_fxsave_struct __user *)((void __user *)fx + PAX_USER_SHADOW_BASE); ++#endif ++ + /* + * Clear the bytes not touched by the fxsave and reserved + * for the SW usage. +@@ -271,7 +281,7 @@ static inline int restore_fpu_checking(struct task_struct *tsk) + "emms\n\t" /* clear stack tags */ + "fildl %P[addr]", /* set F?P to defined value */ + X86_FEATURE_FXSAVE_LEAK, +- [addr] "m" (tsk->thread.fpu.has_fpu)); ++ [addr] "m" (init_tss[smp_processor_id()].x86_tss.sp0)); + + return fpu_restore_checking(&tsk->thread.fpu); + } +diff --git a/arch/x86/include/asm/futex.h b/arch/x86/include/asm/futex.h +index 71ecbcb..bac10b7 100644 +--- a/arch/x86/include/asm/futex.h ++++ b/arch/x86/include/asm/futex.h +@@ -11,16 +11,18 @@ + #include <asm/processor.h> + + #define __futex_atomic_op1(insn, ret, oldval, uaddr, oparg) \ ++ typecheck(u32 __user *, uaddr); \ + asm volatile("1:\t" insn "\n" \ + "2:\t.section .fixup,\"ax\"\n" \ + "3:\tmov\t%3, %1\n" \ + "\tjmp\t2b\n" \ + "\t.previous\n" \ + _ASM_EXTABLE(1b, 3b) \ +- : "=r" (oldval), "=r" (ret), "+m" (*uaddr) \ ++ : "=r" (oldval), "=r" (ret), "+m" (*(u32 __user *)____m(uaddr))\ + : "i" (-EFAULT), "0" (oparg), "1" (0)) + + #define __futex_atomic_op2(insn, ret, oldval, uaddr, oparg) \ ++ typecheck(u32 __user *, uaddr); \ + asm volatile("1:\tmovl %2, %0\n" \ + "\tmovl\t%0, %3\n" \ + "\t" insn "\n" \ +@@ -33,7 +35,7 @@ + _ASM_EXTABLE(1b, 4b) \ + _ASM_EXTABLE(2b, 4b) \ + : "=&a" (oldval), "=&r" (ret), \ +- "+m" (*uaddr), "=&r" (tem) \ ++ "+m" (*(u32 __user *)____m(uaddr)), "=&r" (tem) \ + : "r" (oparg), "i" (-EFAULT), "1" (0)) + + static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr) +@@ -60,10 +62,10 @@ static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr) + + switch (op) { + case FUTEX_OP_SET: +- __futex_atomic_op1("xchgl %0, %2", ret, oldval, uaddr, oparg); ++ __futex_atomic_op1(__copyuser_seg"xchgl %0, %2", ret, oldval, uaddr, oparg); + break; + case FUTEX_OP_ADD: +- __futex_atomic_op1(LOCK_PREFIX "xaddl %0, %2", ret, oldval, ++ __futex_atomic_op1(LOCK_PREFIX __copyuser_seg"xaddl %0, %2", ret, oldval, + uaddr, oparg); + break; + case FUTEX_OP_OR: +@@ -122,13 +124,13 @@ static inline int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, + if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32))) + return -EFAULT; + +- asm volatile("1:\t" LOCK_PREFIX "cmpxchgl %4, %2\n" ++ asm volatile("1:\t" LOCK_PREFIX __copyuser_seg"cmpxchgl %4, %2\n" + "2:\t.section .fixup, \"ax\"\n" + "3:\tmov %3, %0\n" + "\tjmp 2b\n" + "\t.previous\n" + _ASM_EXTABLE(1b, 3b) +- : "+r" (ret), "=a" (oldval), "+m" (*uaddr) ++ : "+r" (ret), "=a" (oldval), "+m" (*(u32 __user *)____m(uaddr)) + : "i" (-EFAULT), "r" (newval), "1" (oldval) + : "memory" + ); +diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h +index eb92a6e..b98b2f4 100644 +--- a/arch/x86/include/asm/hw_irq.h ++++ b/arch/x86/include/asm/hw_irq.h +@@ -136,8 +136,8 @@ extern void setup_ioapic_dest(void); + extern void enable_IO_APIC(void); + + /* Statistics */ +-extern atomic_t irq_err_count; +-extern atomic_t irq_mis_count; ++extern atomic_unchecked_t irq_err_count; ++extern atomic_unchecked_t irq_mis_count; + + /* EISA */ + extern void eisa_set_level_irq(unsigned int irq); +diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h +index d8e8eef..99f81ae 100644 +--- a/arch/x86/include/asm/io.h ++++ b/arch/x86/include/asm/io.h +@@ -194,6 +194,17 @@ extern void set_iounmap_nonlazy(void); + + #include <linux/vmalloc.h> + ++#define ARCH_HAS_VALID_PHYS_ADDR_RANGE ++static inline int valid_phys_addr_range(unsigned long addr, size_t count) ++{ ++ return ((addr + count + PAGE_SIZE - 1) >> PAGE_SHIFT) < (1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT)) ? 1 : 0; ++} ++ ++static inline int valid_mmap_phys_addr_range(unsigned long pfn, size_t count) ++{ ++ return (pfn + (count >> PAGE_SHIFT)) < (1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT)) ? 1 : 0; ++} ++ + /* + * Convert a virtual cached pointer to an uncached pointer + */ +diff --git a/arch/x86/include/asm/irqflags.h b/arch/x86/include/asm/irqflags.h +index bba3cf8..06bc8da 100644 +--- a/arch/x86/include/asm/irqflags.h ++++ b/arch/x86/include/asm/irqflags.h +@@ -141,6 +141,11 @@ static inline notrace unsigned long arch_local_irq_save(void) + sti; \ + sysexit + ++#define GET_CR0_INTO_RDI mov %cr0, %rdi ++#define SET_RDI_INTO_CR0 mov %rdi, %cr0 ++#define GET_CR3_INTO_RDI mov %cr3, %rdi ++#define SET_RDI_INTO_CR3 mov %rdi, %cr3 ++ + #else + #define INTERRUPT_RETURN iret + #define ENABLE_INTERRUPTS_SYSEXIT sti; sysexit +diff --git a/arch/x86/include/asm/kprobes.h b/arch/x86/include/asm/kprobes.h +index 5478825..839e88c 100644 +--- a/arch/x86/include/asm/kprobes.h ++++ b/arch/x86/include/asm/kprobes.h +@@ -37,13 +37,8 @@ typedef u8 kprobe_opcode_t; + #define RELATIVEJUMP_SIZE 5 + #define RELATIVECALL_OPCODE 0xe8 + #define RELATIVE_ADDR_SIZE 4 +-#define MAX_STACK_SIZE 64 +-#define MIN_STACK_SIZE(ADDR) \ +- (((MAX_STACK_SIZE) < (((unsigned long)current_thread_info()) + \ +- THREAD_SIZE - (unsigned long)(ADDR))) \ +- ? (MAX_STACK_SIZE) \ +- : (((unsigned long)current_thread_info()) + \ +- THREAD_SIZE - (unsigned long)(ADDR))) ++#define MAX_STACK_SIZE 64UL ++#define MIN_STACK_SIZE(ADDR) min(MAX_STACK_SIZE, current->thread.sp0 - (unsigned long)(ADDR)) + + #define flush_insn_slot(p) do { } while (0) + +diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h +index e216ba0..453f6ec 100644 +--- a/arch/x86/include/asm/kvm_host.h ++++ b/arch/x86/include/asm/kvm_host.h +@@ -679,7 +679,7 @@ struct kvm_x86_ops { + int (*check_intercept)(struct kvm_vcpu *vcpu, + struct x86_instruction_info *info, + enum x86_intercept_stage stage); +-}; ++} __do_const; + + struct kvm_arch_async_pf { + u32 token; +diff --git a/arch/x86/include/asm/local.h b/arch/x86/include/asm/local.h +index c8bed0d..e5721fa 100644 +--- a/arch/x86/include/asm/local.h ++++ b/arch/x86/include/asm/local.h +@@ -17,26 +17,58 @@ typedef struct { + + static inline void local_inc(local_t *l) + { +- asm volatile(_ASM_INC "%0" ++ asm volatile(_ASM_INC "%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ _ASM_DEC "%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ + : "+m" (l->a.counter)); + } + + static inline void local_dec(local_t *l) + { +- asm volatile(_ASM_DEC "%0" ++ asm volatile(_ASM_DEC "%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ _ASM_INC "%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ + : "+m" (l->a.counter)); + } + + static inline void local_add(long i, local_t *l) + { +- asm volatile(_ASM_ADD "%1,%0" ++ asm volatile(_ASM_ADD "%1,%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ _ASM_SUB "%1,%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ + : "+m" (l->a.counter) + : "ir" (i)); + } + + static inline void local_sub(long i, local_t *l) + { +- asm volatile(_ASM_SUB "%1,%0" ++ asm volatile(_ASM_SUB "%1,%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ _ASM_ADD "%1,%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ + : "+m" (l->a.counter) + : "ir" (i)); + } +@@ -54,7 +86,16 @@ static inline int local_sub_and_test(long i, local_t *l) + { + unsigned char c; + +- asm volatile(_ASM_SUB "%2,%0; sete %1" ++ asm volatile(_ASM_SUB "%2,%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ _ASM_ADD "%2,%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ "sete %1\n" + : "+m" (l->a.counter), "=qm" (c) + : "ir" (i) : "memory"); + return c; +@@ -72,7 +113,16 @@ static inline int local_dec_and_test(local_t *l) + { + unsigned char c; + +- asm volatile(_ASM_DEC "%0; sete %1" ++ asm volatile(_ASM_DEC "%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ _ASM_INC "%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ "sete %1\n" + : "+m" (l->a.counter), "=qm" (c) + : : "memory"); + return c != 0; +@@ -90,7 +140,16 @@ static inline int local_inc_and_test(local_t *l) + { + unsigned char c; + +- asm volatile(_ASM_INC "%0; sete %1" ++ asm volatile(_ASM_INC "%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ _ASM_DEC "%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ "sete %1\n" + : "+m" (l->a.counter), "=qm" (c) + : : "memory"); + return c != 0; +@@ -109,7 +168,16 @@ static inline int local_add_negative(long i, local_t *l) + { + unsigned char c; + +- asm volatile(_ASM_ADD "%2,%0; sets %1" ++ asm volatile(_ASM_ADD "%2,%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ _ASM_SUB "%2,%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++ "sets %1\n" + : "+m" (l->a.counter), "=qm" (c) + : "ir" (i) : "memory"); + return c; +@@ -132,7 +200,15 @@ static inline long local_add_return(long i, local_t *l) + #endif + /* Modern 486+ processor */ + __i = i; +- asm volatile(_ASM_XADD "%0, %1;" ++ asm volatile(_ASM_XADD "%0, %1\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ _ASM_MOV "%0,%1\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ + : "+r" (i), "+m" (l->a.counter) + : : "memory"); + return i + __i; +diff --git a/arch/x86/include/asm/mman.h b/arch/x86/include/asm/mman.h +index 593e51d..fa69c9a 100644 +--- a/arch/x86/include/asm/mman.h ++++ b/arch/x86/include/asm/mman.h +@@ -5,4 +5,14 @@ + + #include <asm-generic/mman.h> + ++#ifdef __KERNEL__ ++#ifndef __ASSEMBLY__ ++#ifdef CONFIG_X86_32 ++#define arch_mmap_check i386_mmap_check ++int i386_mmap_check(unsigned long addr, unsigned long len, ++ unsigned long flags); ++#endif ++#endif ++#endif ++ + #endif /* _ASM_X86_MMAN_H */ +diff --git a/arch/x86/include/asm/mmu.h b/arch/x86/include/asm/mmu.h +index 5f55e69..e20bfb1 100644 +--- a/arch/x86/include/asm/mmu.h ++++ b/arch/x86/include/asm/mmu.h +@@ -9,7 +9,7 @@ + * we put the segment information here. + */ + typedef struct { +- void *ldt; ++ struct desc_struct *ldt; + int size; + + #ifdef CONFIG_X86_64 +@@ -18,7 +18,19 @@ typedef struct { + #endif + + struct mutex lock; +- void *vdso; ++ unsigned long vdso; ++ ++#ifdef CONFIG_X86_32 ++#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) ++ unsigned long user_cs_base; ++ unsigned long user_cs_limit; ++ ++#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP) ++ cpumask_t cpu_user_cs_mask; ++#endif ++ ++#endif ++#endif + } mm_context_t; + + #ifdef CONFIG_SMP +diff --git a/arch/x86/include/asm/mmu_context.h b/arch/x86/include/asm/mmu_context.h +index 6902152..da4283a 100644 +--- a/arch/x86/include/asm/mmu_context.h ++++ b/arch/x86/include/asm/mmu_context.h +@@ -24,6 +24,18 @@ void destroy_context(struct mm_struct *mm); + + static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) + { ++ ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++ unsigned int i; ++ pgd_t *pgd; ++ ++ pax_open_kernel(); ++ pgd = get_cpu_pgd(smp_processor_id()); ++ for (i = USER_PGD_PTRS; i < 2 * USER_PGD_PTRS; ++i) ++ set_pgd_batched(pgd+i, native_make_pgd(0)); ++ pax_close_kernel(); ++#endif ++ + #ifdef CONFIG_SMP + if (percpu_read(cpu_tlbstate.state) == TLBSTATE_OK) + percpu_write(cpu_tlbstate.state, TLBSTATE_LAZY); +@@ -34,16 +46,30 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, + struct task_struct *tsk) + { + unsigned cpu = smp_processor_id(); ++#if defined(CONFIG_X86_32) && defined(CONFIG_SMP) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)) ++ int tlbstate = TLBSTATE_OK; ++#endif + + if (likely(prev != next)) { + #ifdef CONFIG_SMP ++#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)) ++ tlbstate = percpu_read(cpu_tlbstate.state); ++#endif + percpu_write(cpu_tlbstate.state, TLBSTATE_OK); + percpu_write(cpu_tlbstate.active_mm, next); + #endif + cpumask_set_cpu(cpu, mm_cpumask(next)); + + /* Re-load page tables */ ++#ifdef CONFIG_PAX_PER_CPU_PGD ++ pax_open_kernel(); ++ __clone_user_pgds(get_cpu_pgd(cpu), next->pgd); ++ __shadow_user_pgds(get_cpu_pgd(cpu) + USER_PGD_PTRS, next->pgd); ++ pax_close_kernel(); ++ load_cr3(get_cpu_pgd(cpu)); ++#else + load_cr3(next->pgd); ++#endif + + /* stop flush ipis for the previous mm */ + cpumask_clear_cpu(cpu, mm_cpumask(prev)); +@@ -53,9 +79,38 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, + */ + if (unlikely(prev->context.ldt != next->context.ldt)) + load_LDT_nolock(&next->context); +- } ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP) ++ if (!(__supported_pte_mask & _PAGE_NX)) { ++ smp_mb__before_clear_bit(); ++ cpu_clear(cpu, prev->context.cpu_user_cs_mask); ++ smp_mb__after_clear_bit(); ++ cpu_set(cpu, next->context.cpu_user_cs_mask); ++ } ++#endif ++ ++#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)) ++ if (unlikely(prev->context.user_cs_base != next->context.user_cs_base || ++ prev->context.user_cs_limit != next->context.user_cs_limit)) ++ set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu); + #ifdef CONFIG_SMP ++ else if (unlikely(tlbstate != TLBSTATE_OK)) ++ set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu); ++#endif ++#endif ++ ++ } + else { ++ ++#ifdef CONFIG_PAX_PER_CPU_PGD ++ pax_open_kernel(); ++ __clone_user_pgds(get_cpu_pgd(cpu), next->pgd); ++ __shadow_user_pgds(get_cpu_pgd(cpu) + USER_PGD_PTRS, next->pgd); ++ pax_close_kernel(); ++ load_cr3(get_cpu_pgd(cpu)); ++#endif ++ ++#ifdef CONFIG_SMP + percpu_write(cpu_tlbstate.state, TLBSTATE_OK); + BUG_ON(percpu_read(cpu_tlbstate.active_mm) != next); + +@@ -64,11 +119,28 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, + * tlb flush IPI delivery. We must reload CR3 + * to make sure to use no freed page tables. + */ ++ ++#ifndef CONFIG_PAX_PER_CPU_PGD + load_cr3(next->pgd); ++#endif ++ + load_LDT_nolock(&next->context); ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) ++ if (!(__supported_pte_mask & _PAGE_NX)) ++ cpu_set(cpu, next->context.cpu_user_cs_mask); ++#endif ++ ++#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)) ++#ifdef CONFIG_PAX_PAGEEXEC ++ if (!((next->pax_flags & MF_PAX_PAGEEXEC) && (__supported_pte_mask & _PAGE_NX))) ++#endif ++ set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu); ++#endif ++ + } ++#endif + } +-#endif + } + + #define activate_mm(prev, next) \ +diff --git a/arch/x86/include/asm/module.h b/arch/x86/include/asm/module.h +index 9eae775..c914fea 100644 +--- a/arch/x86/include/asm/module.h ++++ b/arch/x86/include/asm/module.h +@@ -5,6 +5,7 @@ + + #ifdef CONFIG_X86_64 + /* X86_64 does not define MODULE_PROC_FAMILY */ ++#define MODULE_PROC_FAMILY "" + #elif defined CONFIG_M386 + #define MODULE_PROC_FAMILY "386 " + #elif defined CONFIG_M486 +@@ -59,8 +60,20 @@ + #error unknown processor family + #endif + +-#ifdef CONFIG_X86_32 +-# define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY ++#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_BTS ++#define MODULE_PAX_KERNEXEC "KERNEXEC_BTS " ++#elif defined(CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR) ++#define MODULE_PAX_KERNEXEC "KERNEXEC_OR " ++#else ++#define MODULE_PAX_KERNEXEC "" + #endif + ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++#define MODULE_PAX_UDEREF "UDEREF " ++#else ++#define MODULE_PAX_UDEREF "" ++#endif ++ ++#define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY MODULE_PAX_KERNEXEC MODULE_PAX_UDEREF ++ + #endif /* _ASM_X86_MODULE_H */ +diff --git a/arch/x86/include/asm/page_64_types.h b/arch/x86/include/asm/page_64_types.h +index 7639dbf..e08a58c 100644 +--- a/arch/x86/include/asm/page_64_types.h ++++ b/arch/x86/include/asm/page_64_types.h +@@ -56,7 +56,7 @@ void copy_page(void *to, void *from); + + /* duplicated to the one in bootmem.h */ + extern unsigned long max_pfn; +-extern unsigned long phys_base; ++extern const unsigned long phys_base; + + extern unsigned long __phys_addr(unsigned long); + #define __phys_reloc_hide(x) (x) +diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h +index aa0f913..0c5bc6a 100644 +--- a/arch/x86/include/asm/paravirt.h ++++ b/arch/x86/include/asm/paravirt.h +@@ -668,6 +668,18 @@ static inline void set_pgd(pgd_t *pgdp, pgd_t pgd) + val); + } + ++static inline void set_pgd_batched(pgd_t *pgdp, pgd_t pgd) ++{ ++ pgdval_t val = native_pgd_val(pgd); ++ ++ if (sizeof(pgdval_t) > sizeof(long)) ++ PVOP_VCALL3(pv_mmu_ops.set_pgd_batched, pgdp, ++ val, (u64)val >> 32); ++ else ++ PVOP_VCALL2(pv_mmu_ops.set_pgd_batched, pgdp, ++ val); ++} ++ + static inline void pgd_clear(pgd_t *pgdp) + { + set_pgd(pgdp, __pgd(0)); +@@ -749,6 +761,21 @@ static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx, + pv_mmu_ops.set_fixmap(idx, phys, flags); + } + ++#ifdef CONFIG_PAX_KERNEXEC ++static inline unsigned long pax_open_kernel(void) ++{ ++ return PVOP_CALL0(unsigned long, pv_mmu_ops.pax_open_kernel); ++} ++ ++static inline unsigned long pax_close_kernel(void) ++{ ++ return PVOP_CALL0(unsigned long, pv_mmu_ops.pax_close_kernel); ++} ++#else ++static inline unsigned long pax_open_kernel(void) { return 0; } ++static inline unsigned long pax_close_kernel(void) { return 0; } ++#endif ++ + #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS) + + static inline int arch_spin_is_locked(struct arch_spinlock *lock) +@@ -965,7 +992,7 @@ extern void default_banner(void); + + #define PARA_PATCH(struct, off) ((PARAVIRT_PATCH_##struct + (off)) / 4) + #define PARA_SITE(ptype, clobbers, ops) _PVSITE(ptype, clobbers, ops, .long, 4) +-#define PARA_INDIRECT(addr) *%cs:addr ++#define PARA_INDIRECT(addr) *%ss:addr + #endif + + #define INTERRUPT_RETURN \ +@@ -1042,6 +1069,21 @@ extern void default_banner(void); + PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_irq_enable_sysexit), \ + CLBR_NONE, \ + jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_irq_enable_sysexit)) ++ ++#define GET_CR0_INTO_RDI \ ++ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0); \ ++ mov %rax,%rdi ++ ++#define SET_RDI_INTO_CR0 \ ++ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0) ++ ++#define GET_CR3_INTO_RDI \ ++ call PARA_INDIRECT(pv_mmu_ops+PV_MMU_read_cr3); \ ++ mov %rax,%rdi ++ ++#define SET_RDI_INTO_CR3 \ ++ call PARA_INDIRECT(pv_mmu_ops+PV_MMU_write_cr3) ++ + #endif /* CONFIG_X86_32 */ + + #endif /* __ASSEMBLY__ */ +diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h +index 8e8b9a4..f07d725 100644 +--- a/arch/x86/include/asm/paravirt_types.h ++++ b/arch/x86/include/asm/paravirt_types.h +@@ -84,20 +84,20 @@ struct pv_init_ops { + */ + unsigned (*patch)(u8 type, u16 clobber, void *insnbuf, + unsigned long addr, unsigned len); +-}; ++} __no_const; + + + struct pv_lazy_ops { + /* Set deferred update mode, used for batching operations. */ + void (*enter)(void); + void (*leave)(void); +-}; ++} __no_const; + + struct pv_time_ops { + unsigned long long (*sched_clock)(void); + unsigned long long (*steal_clock)(int cpu); + unsigned long (*get_tsc_khz)(void); +-}; ++} __no_const; + + struct pv_cpu_ops { + /* hooks for various privileged instructions */ +@@ -193,7 +193,7 @@ struct pv_cpu_ops { + + void (*start_context_switch)(struct task_struct *prev); + void (*end_context_switch)(struct task_struct *next); +-}; ++} __no_const; + + struct pv_irq_ops { + /* +@@ -224,7 +224,7 @@ struct pv_apic_ops { + unsigned long start_eip, + unsigned long start_esp); + #endif +-}; ++} __no_const; + + struct pv_mmu_ops { + unsigned long (*read_cr2)(void); +@@ -313,6 +313,7 @@ struct pv_mmu_ops { + struct paravirt_callee_save make_pud; + + void (*set_pgd)(pgd_t *pudp, pgd_t pgdval); ++ void (*set_pgd_batched)(pgd_t *pudp, pgd_t pgdval); + #endif /* PAGETABLE_LEVELS == 4 */ + #endif /* PAGETABLE_LEVELS >= 3 */ + +@@ -324,6 +325,12 @@ struct pv_mmu_ops { + an mfn. We can tell which is which from the index. */ + void (*set_fixmap)(unsigned /* enum fixed_addresses */ idx, + phys_addr_t phys, pgprot_t flags); ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ unsigned long (*pax_open_kernel)(void); ++ unsigned long (*pax_close_kernel)(void); ++#endif ++ + }; + + struct arch_spinlock; +@@ -334,7 +341,7 @@ struct pv_lock_ops { + void (*spin_lock_flags)(struct arch_spinlock *lock, unsigned long flags); + int (*spin_trylock)(struct arch_spinlock *lock); + void (*spin_unlock)(struct arch_spinlock *lock); +-}; ++} __no_const; + + /* This contains all the paravirt structures: we get a convenient + * number for each function using the offset which we use to indicate +diff --git a/arch/x86/include/asm/pgalloc.h b/arch/x86/include/asm/pgalloc.h +index b4389a4..7024269 100644 +--- a/arch/x86/include/asm/pgalloc.h ++++ b/arch/x86/include/asm/pgalloc.h +@@ -63,6 +63,13 @@ static inline void pmd_populate_kernel(struct mm_struct *mm, + pmd_t *pmd, pte_t *pte) + { + paravirt_alloc_pte(mm, __pa(pte) >> PAGE_SHIFT); ++ set_pmd(pmd, __pmd(__pa(pte) | _KERNPG_TABLE)); ++} ++ ++static inline void pmd_populate_user(struct mm_struct *mm, ++ pmd_t *pmd, pte_t *pte) ++{ ++ paravirt_alloc_pte(mm, __pa(pte) >> PAGE_SHIFT); + set_pmd(pmd, __pmd(__pa(pte) | _PAGE_TABLE)); + } + +@@ -99,12 +106,22 @@ static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd, + + #ifdef CONFIG_X86_PAE + extern void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd); ++static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd) ++{ ++ pud_populate(mm, pudp, pmd); ++} + #else /* !CONFIG_X86_PAE */ + static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) + { + paravirt_alloc_pmd(mm, __pa(pmd) >> PAGE_SHIFT); + set_pud(pud, __pud(_PAGE_TABLE | __pa(pmd))); + } ++ ++static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) ++{ ++ paravirt_alloc_pmd(mm, __pa(pmd) >> PAGE_SHIFT); ++ set_pud(pud, __pud(_KERNPG_TABLE | __pa(pmd))); ++} + #endif /* CONFIG_X86_PAE */ + + #if PAGETABLE_LEVELS > 3 +@@ -114,6 +131,12 @@ static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud) + set_pgd(pgd, __pgd(_PAGE_TABLE | __pa(pud))); + } + ++static inline void pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pud_t *pud) ++{ ++ paravirt_alloc_pud(mm, __pa(pud) >> PAGE_SHIFT); ++ set_pgd(pgd, __pgd(_KERNPG_TABLE | __pa(pud))); ++} ++ + static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) + { + return (pud_t *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT); +diff --git a/arch/x86/include/asm/pgtable-2level.h b/arch/x86/include/asm/pgtable-2level.h +index 98391db..8f6984e 100644 +--- a/arch/x86/include/asm/pgtable-2level.h ++++ b/arch/x86/include/asm/pgtable-2level.h +@@ -18,7 +18,9 @@ static inline void native_set_pte(pte_t *ptep , pte_t pte) + + static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) + { ++ pax_open_kernel(); + *pmdp = pmd; ++ pax_close_kernel(); + } + + static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte) +diff --git a/arch/x86/include/asm/pgtable-3level.h b/arch/x86/include/asm/pgtable-3level.h +index cb00ccc..17e9054 100644 +--- a/arch/x86/include/asm/pgtable-3level.h ++++ b/arch/x86/include/asm/pgtable-3level.h +@@ -92,12 +92,16 @@ static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte) + + static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) + { ++ pax_open_kernel(); + set_64bit((unsigned long long *)(pmdp), native_pmd_val(pmd)); ++ pax_close_kernel(); + } + + static inline void native_set_pud(pud_t *pudp, pud_t pud) + { ++ pax_open_kernel(); + set_64bit((unsigned long long *)(pudp), native_pud_val(pud)); ++ pax_close_kernel(); + } + + /* +diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h +index 49afb3f..91a8c63 100644 +--- a/arch/x86/include/asm/pgtable.h ++++ b/arch/x86/include/asm/pgtable.h +@@ -44,6 +44,7 @@ extern struct mm_struct *pgd_page_get_mm(struct page *page); + + #ifndef __PAGETABLE_PUD_FOLDED + #define set_pgd(pgdp, pgd) native_set_pgd(pgdp, pgd) ++#define set_pgd_batched(pgdp, pgd) native_set_pgd_batched(pgdp, pgd) + #define pgd_clear(pgd) native_pgd_clear(pgd) + #endif + +@@ -81,12 +82,51 @@ extern struct mm_struct *pgd_page_get_mm(struct page *page); + + #define arch_end_context_switch(prev) do {} while(0) + ++#define pax_open_kernel() native_pax_open_kernel() ++#define pax_close_kernel() native_pax_close_kernel() + #endif /* CONFIG_PARAVIRT */ + ++#define __HAVE_ARCH_PAX_OPEN_KERNEL ++#define __HAVE_ARCH_PAX_CLOSE_KERNEL ++ ++#ifdef CONFIG_PAX_KERNEXEC ++static inline unsigned long native_pax_open_kernel(void) ++{ ++ unsigned long cr0; ++ ++ preempt_disable(); ++ barrier(); ++ cr0 = read_cr0() ^ X86_CR0_WP; ++ BUG_ON(unlikely(cr0 & X86_CR0_WP)); ++ write_cr0(cr0); ++ return cr0 ^ X86_CR0_WP; ++} ++ ++static inline unsigned long native_pax_close_kernel(void) ++{ ++ unsigned long cr0; ++ ++ cr0 = read_cr0() ^ X86_CR0_WP; ++ BUG_ON(unlikely(!(cr0 & X86_CR0_WP))); ++ write_cr0(cr0); ++ barrier(); ++ preempt_enable_no_resched(); ++ return cr0 ^ X86_CR0_WP; ++} ++#else ++static inline unsigned long native_pax_open_kernel(void) { return 0; } ++static inline unsigned long native_pax_close_kernel(void) { return 0; } ++#endif ++ + /* + * The following only work if pte_present() is true. + * Undefined behaviour if not.. + */ ++static inline int pte_user(pte_t pte) ++{ ++ return pte_val(pte) & _PAGE_USER; ++} ++ + static inline int pte_dirty(pte_t pte) + { + return pte_flags(pte) & _PAGE_DIRTY; +@@ -196,9 +236,29 @@ static inline pte_t pte_wrprotect(pte_t pte) + return pte_clear_flags(pte, _PAGE_RW); + } + ++static inline pte_t pte_mkread(pte_t pte) ++{ ++ return __pte(pte_val(pte) | _PAGE_USER); ++} ++ + static inline pte_t pte_mkexec(pte_t pte) + { +- return pte_clear_flags(pte, _PAGE_NX); ++#ifdef CONFIG_X86_PAE ++ if (__supported_pte_mask & _PAGE_NX) ++ return pte_clear_flags(pte, _PAGE_NX); ++ else ++#endif ++ return pte_set_flags(pte, _PAGE_USER); ++} ++ ++static inline pte_t pte_exprotect(pte_t pte) ++{ ++#ifdef CONFIG_X86_PAE ++ if (__supported_pte_mask & _PAGE_NX) ++ return pte_set_flags(pte, _PAGE_NX); ++ else ++#endif ++ return pte_clear_flags(pte, _PAGE_USER); + } + + static inline pte_t pte_mkdirty(pte_t pte) +@@ -390,6 +450,15 @@ pte_t *populate_extra_pte(unsigned long vaddr); + #endif + + #ifndef __ASSEMBLY__ ++ ++#ifdef CONFIG_PAX_PER_CPU_PGD ++extern pgd_t cpu_pgd[NR_CPUS][PTRS_PER_PGD]; ++static inline pgd_t *get_cpu_pgd(unsigned int cpu) ++{ ++ return cpu_pgd[cpu]; ++} ++#endif ++ + #include <linux/mm_types.h> + + static inline int pte_none(pte_t pte) +@@ -560,7 +629,7 @@ static inline pud_t *pud_offset(pgd_t *pgd, unsigned long address) + + static inline int pgd_bad(pgd_t pgd) + { +- return (pgd_flags(pgd) & ~_PAGE_USER) != _KERNPG_TABLE; ++ return (pgd_flags(pgd) & ~(_PAGE_USER | _PAGE_NX)) != _KERNPG_TABLE; + } + + static inline int pgd_none(pgd_t pgd) +@@ -583,7 +652,12 @@ static inline int pgd_none(pgd_t pgd) + * pgd_offset() returns a (pgd_t *) + * pgd_index() is used get the offset into the pgd page's array of pgd_t's; + */ +-#define pgd_offset(mm, address) ((mm)->pgd + pgd_index((address))) ++#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) ++ ++#ifdef CONFIG_PAX_PER_CPU_PGD ++#define pgd_offset_cpu(cpu, address) (get_cpu_pgd(cpu) + pgd_index(address)) ++#endif ++ + /* + * a shortcut which implies the use of the kernel's pgd, instead + * of a process's +@@ -594,6 +668,20 @@ static inline int pgd_none(pgd_t pgd) + #define KERNEL_PGD_BOUNDARY pgd_index(PAGE_OFFSET) + #define KERNEL_PGD_PTRS (PTRS_PER_PGD - KERNEL_PGD_BOUNDARY) + ++#ifdef CONFIG_X86_32 ++#define USER_PGD_PTRS KERNEL_PGD_BOUNDARY ++#else ++#define TASK_SIZE_MAX_SHIFT CONFIG_TASK_SIZE_MAX_SHIFT ++#define USER_PGD_PTRS (_AC(1,UL) << (TASK_SIZE_MAX_SHIFT - PGDIR_SHIFT)) ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++#define PAX_USER_SHADOW_BASE (_AC(1,UL) << TASK_SIZE_MAX_SHIFT) ++#else ++#define PAX_USER_SHADOW_BASE (_AC(0,UL)) ++#endif ++ ++#endif ++ + #ifndef __ASSEMBLY__ + + extern int direct_gbpages; +@@ -758,11 +846,23 @@ static inline void pmdp_set_wrprotect(struct mm_struct *mm, + * dst and src can be on the same page, but the range must not overlap, + * and must not cross a page boundary. + */ +-static inline void clone_pgd_range(pgd_t *dst, pgd_t *src, int count) ++static inline void clone_pgd_range(pgd_t *dst, const pgd_t *src, int count) + { +- memcpy(dst, src, count * sizeof(pgd_t)); ++ pax_open_kernel(); ++ while (count--) ++ *dst++ = *src++; ++ pax_close_kernel(); + } + ++#ifdef CONFIG_PAX_PER_CPU_PGD ++extern void __clone_user_pgds(pgd_t *dst, const pgd_t *src); ++#endif ++ ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++extern void __shadow_user_pgds(pgd_t *dst, const pgd_t *src); ++#else ++static inline void __shadow_user_pgds(pgd_t *dst, const pgd_t *src) {} ++#endif + + #include <asm-generic/pgtable.h> + #endif /* __ASSEMBLY__ */ +diff --git a/arch/x86/include/asm/pgtable_32.h b/arch/x86/include/asm/pgtable_32.h +index 0c92113..34a77c6 100644 +--- a/arch/x86/include/asm/pgtable_32.h ++++ b/arch/x86/include/asm/pgtable_32.h +@@ -25,9 +25,6 @@ + struct mm_struct; + struct vm_area_struct; + +-extern pgd_t swapper_pg_dir[1024]; +-extern pgd_t initial_page_table[1024]; +- + static inline void pgtable_cache_init(void) { } + static inline void check_pgt_cache(void) { } + void paging_init(void); +@@ -48,6 +45,12 @@ extern void set_pmd_pfn(unsigned long, unsigned long, pgprot_t); + # include <asm/pgtable-2level.h> + #endif + ++extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; ++extern pgd_t initial_page_table[PTRS_PER_PGD]; ++#ifdef CONFIG_X86_PAE ++extern pmd_t swapper_pm_dir[PTRS_PER_PGD][PTRS_PER_PMD]; ++#endif ++ + #if defined(CONFIG_HIGHPTE) + #define pte_offset_map(dir, address) \ + ((pte_t *)kmap_atomic(pmd_page(*(dir))) + \ +@@ -62,7 +65,9 @@ extern void set_pmd_pfn(unsigned long, unsigned long, pgprot_t); + /* Clear a kernel PTE and flush it from the TLB */ + #define kpte_clear_flush(ptep, vaddr) \ + do { \ ++ pax_open_kernel(); \ + pte_clear(&init_mm, (vaddr), (ptep)); \ ++ pax_close_kernel(); \ + __flush_tlb_one((vaddr)); \ + } while (0) + +@@ -74,6 +79,9 @@ do { \ + + #endif /* !__ASSEMBLY__ */ + ++#define HAVE_ARCH_UNMAPPED_AREA ++#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN ++ + /* + * kern_addr_valid() is (1) for FLATMEM and (0) for + * SPARSEMEM and DISCONTIGMEM +diff --git a/arch/x86/include/asm/pgtable_32_types.h b/arch/x86/include/asm/pgtable_32_types.h +index ed5903b..c7fe163 100644 +--- a/arch/x86/include/asm/pgtable_32_types.h ++++ b/arch/x86/include/asm/pgtable_32_types.h +@@ -8,7 +8,7 @@ + */ + #ifdef CONFIG_X86_PAE + # include <asm/pgtable-3level_types.h> +-# define PMD_SIZE (1UL << PMD_SHIFT) ++# define PMD_SIZE (_AC(1, UL) << PMD_SHIFT) + # define PMD_MASK (~(PMD_SIZE - 1)) + #else + # include <asm/pgtable-2level_types.h> +@@ -46,6 +46,19 @@ extern bool __vmalloc_start_set; /* set once high_memory is set */ + # define VMALLOC_END (FIXADDR_START - 2 * PAGE_SIZE) + #endif + ++#ifdef CONFIG_PAX_KERNEXEC ++#ifndef __ASSEMBLY__ ++extern unsigned char MODULES_EXEC_VADDR[]; ++extern unsigned char MODULES_EXEC_END[]; ++#endif ++#include <asm/boot.h> ++#define ktla_ktva(addr) (addr + LOAD_PHYSICAL_ADDR + PAGE_OFFSET) ++#define ktva_ktla(addr) (addr - LOAD_PHYSICAL_ADDR - PAGE_OFFSET) ++#else ++#define ktla_ktva(addr) (addr) ++#define ktva_ktla(addr) (addr) ++#endif ++ + #define MODULES_VADDR VMALLOC_START + #define MODULES_END VMALLOC_END + #define MODULES_LEN (MODULES_VADDR - MODULES_END) +diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h +index 975f709..9f779c9 100644 +--- a/arch/x86/include/asm/pgtable_64.h ++++ b/arch/x86/include/asm/pgtable_64.h +@@ -16,10 +16,14 @@ + + extern pud_t level3_kernel_pgt[512]; + extern pud_t level3_ident_pgt[512]; ++extern pud_t level3_vmalloc_start_pgt[512]; ++extern pud_t level3_vmalloc_end_pgt[512]; ++extern pud_t level3_vmemmap_pgt[512]; ++extern pud_t level2_vmemmap_pgt[512]; + extern pmd_t level2_kernel_pgt[512]; + extern pmd_t level2_fixmap_pgt[512]; +-extern pmd_t level2_ident_pgt[512]; +-extern pgd_t init_level4_pgt[]; ++extern pmd_t level2_ident_pgt[512*2]; ++extern pgd_t init_level4_pgt[512]; + + #define swapper_pg_dir init_level4_pgt + +@@ -61,7 +65,9 @@ static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte) + + static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) + { ++ pax_open_kernel(); + *pmdp = pmd; ++ pax_close_kernel(); + } + + static inline void native_pmd_clear(pmd_t *pmd) +@@ -97,7 +103,9 @@ static inline pmd_t native_pmdp_get_and_clear(pmd_t *xp) + + static inline void native_set_pud(pud_t *pudp, pud_t pud) + { ++ pax_open_kernel(); + *pudp = pud; ++ pax_close_kernel(); + } + + static inline void native_pud_clear(pud_t *pud) +@@ -107,6 +115,13 @@ static inline void native_pud_clear(pud_t *pud) + + static inline void native_set_pgd(pgd_t *pgdp, pgd_t pgd) + { ++ pax_open_kernel(); ++ *pgdp = pgd; ++ pax_close_kernel(); ++} ++ ++static inline void native_set_pgd_batched(pgd_t *pgdp, pgd_t pgd) ++{ + *pgdp = pgd; + } + +diff --git a/arch/x86/include/asm/pgtable_64_types.h b/arch/x86/include/asm/pgtable_64_types.h +index 766ea16..5b96cb3 100644 +--- a/arch/x86/include/asm/pgtable_64_types.h ++++ b/arch/x86/include/asm/pgtable_64_types.h +@@ -59,5 +59,10 @@ typedef struct { pteval_t pte; } pte_t; + #define MODULES_VADDR _AC(0xffffffffa0000000, UL) + #define MODULES_END _AC(0xffffffffff000000, UL) + #define MODULES_LEN (MODULES_END - MODULES_VADDR) ++#define MODULES_EXEC_VADDR MODULES_VADDR ++#define MODULES_EXEC_END MODULES_END ++ ++#define ktla_ktva(addr) (addr) ++#define ktva_ktla(addr) (addr) + + #endif /* _ASM_X86_PGTABLE_64_DEFS_H */ +diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h +index 013286a..8b42f4f 100644 +--- a/arch/x86/include/asm/pgtable_types.h ++++ b/arch/x86/include/asm/pgtable_types.h +@@ -16,13 +16,12 @@ + #define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */ + #define _PAGE_BIT_PAT 7 /* on 4KB pages */ + #define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */ +-#define _PAGE_BIT_UNUSED1 9 /* available for programmer */ ++#define _PAGE_BIT_SPECIAL 9 /* special mappings, no associated struct page */ + #define _PAGE_BIT_IOMAP 10 /* flag used to indicate IO mapping */ + #define _PAGE_BIT_HIDDEN 11 /* hidden by kmemcheck */ + #define _PAGE_BIT_PAT_LARGE 12 /* On 2MB or 1GB pages */ +-#define _PAGE_BIT_SPECIAL _PAGE_BIT_UNUSED1 +-#define _PAGE_BIT_CPA_TEST _PAGE_BIT_UNUSED1 +-#define _PAGE_BIT_SPLITTING _PAGE_BIT_UNUSED1 /* only valid on a PSE pmd */ ++#define _PAGE_BIT_CPA_TEST _PAGE_BIT_SPECIAL ++#define _PAGE_BIT_SPLITTING _PAGE_BIT_SPECIAL /* only valid on a PSE pmd */ + #define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */ + + /* If _PAGE_BIT_PRESENT is clear, we use these: */ +@@ -40,7 +39,6 @@ + #define _PAGE_DIRTY (_AT(pteval_t, 1) << _PAGE_BIT_DIRTY) + #define _PAGE_PSE (_AT(pteval_t, 1) << _PAGE_BIT_PSE) + #define _PAGE_GLOBAL (_AT(pteval_t, 1) << _PAGE_BIT_GLOBAL) +-#define _PAGE_UNUSED1 (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED1) + #define _PAGE_IOMAP (_AT(pteval_t, 1) << _PAGE_BIT_IOMAP) + #define _PAGE_PAT (_AT(pteval_t, 1) << _PAGE_BIT_PAT) + #define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE) +@@ -57,8 +55,10 @@ + + #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) + #define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_NX) +-#else ++#elif defined(CONFIG_KMEMCHECK) + #define _PAGE_NX (_AT(pteval_t, 0)) ++#else ++#define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_HIDDEN) + #endif + + #define _PAGE_FILE (_AT(pteval_t, 1) << _PAGE_BIT_FILE) +@@ -96,6 +96,9 @@ + #define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \ + _PAGE_ACCESSED) + ++#define PAGE_READONLY_NOEXEC PAGE_READONLY ++#define PAGE_SHARED_NOEXEC PAGE_SHARED ++ + #define __PAGE_KERNEL_EXEC \ + (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL) + #define __PAGE_KERNEL (__PAGE_KERNEL_EXEC | _PAGE_NX) +@@ -106,7 +109,7 @@ + #define __PAGE_KERNEL_WC (__PAGE_KERNEL | _PAGE_CACHE_WC) + #define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT) + #define __PAGE_KERNEL_UC_MINUS (__PAGE_KERNEL | _PAGE_PCD) +-#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RX | _PAGE_USER) ++#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RO | _PAGE_USER) + #define __PAGE_KERNEL_VVAR (__PAGE_KERNEL_RO | _PAGE_USER) + #define __PAGE_KERNEL_VVAR_NOCACHE (__PAGE_KERNEL_VVAR | _PAGE_PCD | _PAGE_PWT) + #define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE) +@@ -168,8 +171,8 @@ + * bits are combined, this will alow user to access the high address mapped + * VDSO in the presence of CONFIG_COMPAT_VDSO + */ +-#define PTE_IDENT_ATTR 0x003 /* PRESENT+RW */ +-#define PDE_IDENT_ATTR 0x067 /* PRESENT+RW+USER+DIRTY+ACCESSED */ ++#define PTE_IDENT_ATTR 0x063 /* PRESENT+RW+DIRTY+ACCESSED */ ++#define PDE_IDENT_ATTR 0x063 /* PRESENT+RW+DIRTY+ACCESSED */ + #define PGD_IDENT_ATTR 0x001 /* PRESENT (no other attributes) */ + #endif + +@@ -207,7 +210,17 @@ static inline pgdval_t pgd_flags(pgd_t pgd) + { + return native_pgd_val(pgd) & PTE_FLAGS_MASK; + } ++#endif + ++#if PAGETABLE_LEVELS == 3 ++#include <asm-generic/pgtable-nopud.h> ++#endif ++ ++#if PAGETABLE_LEVELS == 2 ++#include <asm-generic/pgtable-nopmd.h> ++#endif ++ ++#ifndef __ASSEMBLY__ + #if PAGETABLE_LEVELS > 3 + typedef struct { pudval_t pud; } pud_t; + +@@ -221,8 +234,6 @@ static inline pudval_t native_pud_val(pud_t pud) + return pud.pud; + } + #else +-#include <asm-generic/pgtable-nopud.h> +- + static inline pudval_t native_pud_val(pud_t pud) + { + return native_pgd_val(pud.pgd); +@@ -242,8 +253,6 @@ static inline pmdval_t native_pmd_val(pmd_t pmd) + return pmd.pmd; + } + #else +-#include <asm-generic/pgtable-nopmd.h> +- + static inline pmdval_t native_pmd_val(pmd_t pmd) + { + return native_pgd_val(pmd.pud.pgd); +@@ -283,7 +292,6 @@ typedef struct page *pgtable_t; + + extern pteval_t __supported_pte_mask; + extern void set_nx(void); +-extern int nx_enabled; + + #define pgprot_writecombine pgprot_writecombine + extern pgprot_t pgprot_writecombine(pgprot_t prot); +diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h +index 4fa7dcc..764e33a 100644 +--- a/arch/x86/include/asm/processor.h ++++ b/arch/x86/include/asm/processor.h +@@ -276,7 +276,7 @@ struct tss_struct { + + } ____cacheline_aligned; + +-DECLARE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss); ++extern struct tss_struct init_tss[NR_CPUS]; + + /* + * Save the original ist values for checking stack pointers during debugging +@@ -807,11 +807,18 @@ static inline void spin_lock_prefetch(const void *x) + */ + #define TASK_SIZE PAGE_OFFSET + #define TASK_SIZE_MAX TASK_SIZE ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++#define SEGMEXEC_TASK_SIZE (TASK_SIZE / 2) ++#define STACK_TOP ((current->mm->pax_flags & MF_PAX_SEGMEXEC)?SEGMEXEC_TASK_SIZE:TASK_SIZE) ++#else + #define STACK_TOP TASK_SIZE +-#define STACK_TOP_MAX STACK_TOP ++#endif ++ ++#define STACK_TOP_MAX TASK_SIZE + + #define INIT_THREAD { \ +- .sp0 = sizeof(init_stack) + (long)&init_stack, \ ++ .sp0 = sizeof(init_stack) + (long)&init_stack - 8, \ + .vm86_info = NULL, \ + .sysenter_cs = __KERNEL_CS, \ + .io_bitmap_ptr = NULL, \ +@@ -825,7 +832,7 @@ static inline void spin_lock_prefetch(const void *x) + */ + #define INIT_TSS { \ + .x86_tss = { \ +- .sp0 = sizeof(init_stack) + (long)&init_stack, \ ++ .sp0 = sizeof(init_stack) + (long)&init_stack - 8, \ + .ss0 = __KERNEL_DS, \ + .ss1 = __KERNEL_CS, \ + .io_bitmap_base = INVALID_IO_BITMAP_OFFSET, \ +@@ -836,11 +843,7 @@ static inline void spin_lock_prefetch(const void *x) + extern unsigned long thread_saved_pc(struct task_struct *tsk); + + #define THREAD_SIZE_LONGS (THREAD_SIZE/sizeof(unsigned long)) +-#define KSTK_TOP(info) \ +-({ \ +- unsigned long *__ptr = (unsigned long *)(info); \ +- (unsigned long)(&__ptr[THREAD_SIZE_LONGS]); \ +-}) ++#define KSTK_TOP(info) ((container_of(info, struct task_struct, tinfo))->thread.sp0) + + /* + * The below -8 is to reserve 8 bytes on top of the ring0 stack. +@@ -855,7 +858,7 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk); + #define task_pt_regs(task) \ + ({ \ + struct pt_regs *__regs__; \ +- __regs__ = (struct pt_regs *)(KSTK_TOP(task_stack_page(task))-8); \ ++ __regs__ = (struct pt_regs *)((task)->thread.sp0); \ + __regs__ - 1; \ + }) + +@@ -865,13 +868,13 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk); + /* + * User space process size. 47bits minus one guard page. + */ +-#define TASK_SIZE_MAX ((1UL << 47) - PAGE_SIZE) ++#define TASK_SIZE_MAX ((1UL << TASK_SIZE_MAX_SHIFT) - PAGE_SIZE) + + /* This decides where the kernel will search for a free chunk of vm + * space during mmap's. + */ + #define IA32_PAGE_OFFSET ((current->personality & ADDR_LIMIT_3GB) ? \ +- 0xc0000000 : 0xFFFFe000) ++ 0xc0000000 : 0xFFFFf000) + + #define TASK_SIZE (test_thread_flag(TIF_ADDR32) ? \ + IA32_PAGE_OFFSET : TASK_SIZE_MAX) +@@ -882,11 +885,11 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk); + #define STACK_TOP_MAX TASK_SIZE_MAX + + #define INIT_THREAD { \ +- .sp0 = (unsigned long)&init_stack + sizeof(init_stack) \ ++ .sp0 = (unsigned long)&init_stack + sizeof(init_stack) - 16 \ + } + + #define INIT_TSS { \ +- .x86_tss.sp0 = (unsigned long)&init_stack + sizeof(init_stack) \ ++ .x86_tss.sp0 = (unsigned long)&init_stack + sizeof(init_stack) - 16 \ + } + + /* +@@ -914,6 +917,10 @@ extern void start_thread(struct pt_regs *regs, unsigned long new_ip, + */ + #define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3)) + ++#ifdef CONFIG_PAX_SEGMEXEC ++#define SEGMEXEC_TASK_UNMAPPED_BASE (PAGE_ALIGN(SEGMEXEC_TASK_SIZE / 3)) ++#endif ++ + #define KSTK_EIP(task) (task_pt_regs(task)->ip) + + /* Get/set a process' ability to use the timestamp counter instruction */ +@@ -976,12 +983,12 @@ extern bool cpu_has_amd_erratum(const int *); + + void cpu_idle_wait(void); + +-extern unsigned long arch_align_stack(unsigned long sp); ++#define arch_align_stack(x) ((x) & ~0xfUL) + extern void free_init_pages(char *what, unsigned long begin, unsigned long end); + + void default_idle(void); + bool set_pm_idle_to_default(void); + +-void stop_this_cpu(void *dummy); ++void stop_this_cpu(void *dummy) __noreturn; + + #endif /* _ASM_X86_PROCESSOR_H */ +diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h +index dcfde52..dbfea06 100644 +--- a/arch/x86/include/asm/ptrace.h ++++ b/arch/x86/include/asm/ptrace.h +@@ -155,28 +155,29 @@ static inline unsigned long regs_return_value(struct pt_regs *regs) + } + + /* +- * user_mode_vm(regs) determines whether a register set came from user mode. ++ * user_mode(regs) determines whether a register set came from user mode. + * This is true if V8086 mode was enabled OR if the register set was from + * protected mode with RPL-3 CS value. This tricky test checks that with + * one comparison. Many places in the kernel can bypass this full check +- * if they have already ruled out V8086 mode, so user_mode(regs) can be used. ++ * if they have already ruled out V8086 mode, so user_mode_novm(regs) can ++ * be used. + */ +-static inline int user_mode(struct pt_regs *regs) ++static inline int user_mode_novm(struct pt_regs *regs) + { + #ifdef CONFIG_X86_32 + return (regs->cs & SEGMENT_RPL_MASK) == USER_RPL; + #else +- return !!(regs->cs & 3); ++ return !!(regs->cs & SEGMENT_RPL_MASK); + #endif + } + +-static inline int user_mode_vm(struct pt_regs *regs) ++static inline int user_mode(struct pt_regs *regs) + { + #ifdef CONFIG_X86_32 + return ((regs->cs & SEGMENT_RPL_MASK) | (regs->flags & X86_VM_MASK)) >= + USER_RPL; + #else +- return user_mode(regs); ++ return user_mode_novm(regs); + #endif + } + +@@ -192,15 +193,16 @@ static inline int v8086_mode(struct pt_regs *regs) + #ifdef CONFIG_X86_64 + static inline bool user_64bit_mode(struct pt_regs *regs) + { ++ unsigned long cs = regs->cs & 0xffff; + #ifndef CONFIG_PARAVIRT + /* + * On non-paravirt systems, this is the only long mode CPL 3 + * selector. We do not allow long mode selectors in the LDT. + */ +- return regs->cs == __USER_CS; ++ return cs == __USER_CS; + #else + /* Headers are too twisted for this to go in paravirt.h. */ +- return regs->cs == __USER_CS || regs->cs == pv_info.extra_user_64bit_cs; ++ return cs == __USER_CS || cs == pv_info.extra_user_64bit_cs; + #endif + } + #endif +diff --git a/arch/x86/include/asm/reboot.h b/arch/x86/include/asm/reboot.h +index 92f29706..a79cbbb 100644 +--- a/arch/x86/include/asm/reboot.h ++++ b/arch/x86/include/asm/reboot.h +@@ -6,19 +6,19 @@ + struct pt_regs; + + struct machine_ops { +- void (*restart)(char *cmd); +- void (*halt)(void); +- void (*power_off)(void); ++ void (* __noreturn restart)(char *cmd); ++ void (* __noreturn halt)(void); ++ void (* __noreturn power_off)(void); + void (*shutdown)(void); + void (*crash_shutdown)(struct pt_regs *); +- void (*emergency_restart)(void); +-}; ++ void (* __noreturn emergency_restart)(void); ++} __no_const; + + extern struct machine_ops machine_ops; + + void native_machine_crash_shutdown(struct pt_regs *regs); + void native_machine_shutdown(void); +-void machine_real_restart(unsigned int type); ++void machine_real_restart(unsigned int type) __noreturn; + /* These must match dispatch_table in reboot_32.S */ + #define MRR_BIOS 0 + #define MRR_APM 1 +diff --git a/arch/x86/include/asm/rwsem.h b/arch/x86/include/asm/rwsem.h +index 2dbe4a7..ce1db00 100644 +--- a/arch/x86/include/asm/rwsem.h ++++ b/arch/x86/include/asm/rwsem.h +@@ -64,6 +64,14 @@ static inline void __down_read(struct rw_semaphore *sem) + { + asm volatile("# beginning down_read\n\t" + LOCK_PREFIX _ASM_INC "(%1)\n\t" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX _ASM_DEC "(%1)\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ + /* adds 0x00000001 */ + " jns 1f\n" + " call call_rwsem_down_read_failed\n" +@@ -85,6 +93,14 @@ static inline int __down_read_trylock(struct rw_semaphore *sem) + "1:\n\t" + " mov %1,%2\n\t" + " add %3,%2\n\t" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ "sub %3,%2\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ + " jle 2f\n\t" + LOCK_PREFIX " cmpxchg %2,%0\n\t" + " jnz 1b\n\t" +@@ -104,6 +120,14 @@ static inline void __down_write_nested(struct rw_semaphore *sem, int subclass) + long tmp; + asm volatile("# beginning down_write\n\t" + LOCK_PREFIX " xadd %1,(%2)\n\t" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ "mov %1,(%2)\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ + /* adds 0xffff0001, returns the old value */ + " test %1,%1\n\t" + /* was the count 0 before? */ +@@ -141,6 +165,14 @@ static inline void __up_read(struct rw_semaphore *sem) + long tmp; + asm volatile("# beginning __up_read\n\t" + LOCK_PREFIX " xadd %1,(%2)\n\t" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ "mov %1,(%2)\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ + /* subtracts 1, returns the old value */ + " jns 1f\n\t" + " call call_rwsem_wake\n" /* expects old value in %edx */ +@@ -159,6 +191,14 @@ static inline void __up_write(struct rw_semaphore *sem) + long tmp; + asm volatile("# beginning __up_write\n\t" + LOCK_PREFIX " xadd %1,(%2)\n\t" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ "mov %1,(%2)\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ + /* subtracts 0xffff0001, returns the old value */ + " jns 1f\n\t" + " call call_rwsem_wake\n" /* expects old value in %edx */ +@@ -176,6 +216,14 @@ static inline void __downgrade_write(struct rw_semaphore *sem) + { + asm volatile("# beginning __downgrade_write\n\t" + LOCK_PREFIX _ASM_ADD "%2,(%1)\n\t" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX _ASM_SUB "%2,(%1)\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ + /* + * transitions 0xZZZZ0001 -> 0xYYYY0001 (i386) + * 0xZZZZZZZZ00000001 -> 0xYYYYYYYY00000001 (x86_64) +@@ -194,7 +242,15 @@ static inline void __downgrade_write(struct rw_semaphore *sem) + */ + static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem) + { +- asm volatile(LOCK_PREFIX _ASM_ADD "%1,%0" ++ asm volatile(LOCK_PREFIX _ASM_ADD "%1,%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX _ASM_SUB "%1,%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ + : "+m" (sem->count) + : "er" (delta)); + } +@@ -204,7 +260,7 @@ static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem) + */ + static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem) + { +- return delta + xadd(&sem->count, delta); ++ return delta + xadd_check_overflow(&sem->count, delta); + } + + #endif /* __KERNEL__ */ +diff --git a/arch/x86/include/asm/segment.h b/arch/x86/include/asm/segment.h +index 1654662..5af4157 100644 +--- a/arch/x86/include/asm/segment.h ++++ b/arch/x86/include/asm/segment.h +@@ -64,10 +64,15 @@ + * 26 - ESPFIX small SS + * 27 - per-cpu [ offset to per-cpu data area ] + * 28 - stack_canary-20 [ for stack protector ] +- * 29 - unused +- * 30 - unused ++ * 29 - PCI BIOS CS ++ * 30 - PCI BIOS DS + * 31 - TSS for double fault handler + */ ++#define GDT_ENTRY_KERNEXEC_EFI_CS (1) ++#define GDT_ENTRY_KERNEXEC_EFI_DS (2) ++#define __KERNEXEC_EFI_CS (GDT_ENTRY_KERNEXEC_EFI_CS*8) ++#define __KERNEXEC_EFI_DS (GDT_ENTRY_KERNEXEC_EFI_DS*8) ++ + #define GDT_ENTRY_TLS_MIN 6 + #define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1) + +@@ -79,6 +84,8 @@ + + #define GDT_ENTRY_KERNEL_CS (GDT_ENTRY_KERNEL_BASE+0) + ++#define GDT_ENTRY_KERNEXEC_KERNEL_CS (4) ++ + #define GDT_ENTRY_KERNEL_DS (GDT_ENTRY_KERNEL_BASE+1) + + #define GDT_ENTRY_TSS (GDT_ENTRY_KERNEL_BASE+4) +@@ -104,6 +111,12 @@ + #define __KERNEL_STACK_CANARY 0 + #endif + ++#define GDT_ENTRY_PCIBIOS_CS (GDT_ENTRY_KERNEL_BASE+17) ++#define __PCIBIOS_CS (GDT_ENTRY_PCIBIOS_CS * 8) ++ ++#define GDT_ENTRY_PCIBIOS_DS (GDT_ENTRY_KERNEL_BASE+18) ++#define __PCIBIOS_DS (GDT_ENTRY_PCIBIOS_DS * 8) ++ + #define GDT_ENTRY_DOUBLEFAULT_TSS 31 + + /* +@@ -141,7 +154,7 @@ + */ + + /* Matches PNP_CS32 and PNP_CS16 (they must be consecutive) */ +-#define SEGMENT_IS_PNP_CODE(x) (((x) & 0xf4) == GDT_ENTRY_PNPBIOS_BASE * 8) ++#define SEGMENT_IS_PNP_CODE(x) (((x) & 0xFFFCU) == PNP_CS32 || ((x) & 0xFFFCU) == PNP_CS16) + + + #else +@@ -165,6 +178,8 @@ + #define __USER32_CS (GDT_ENTRY_DEFAULT_USER32_CS*8+3) + #define __USER32_DS __USER_DS + ++#define GDT_ENTRY_KERNEXEC_KERNEL_CS 7 ++ + #define GDT_ENTRY_TSS 8 /* needs two entries */ + #define GDT_ENTRY_LDT 10 /* needs two entries */ + #define GDT_ENTRY_TLS_MIN 12 +@@ -185,6 +200,7 @@ + #endif + + #define __KERNEL_CS (GDT_ENTRY_KERNEL_CS*8) ++#define __KERNEXEC_KERNEL_CS (GDT_ENTRY_KERNEXEC_KERNEL_CS*8) + #define __KERNEL_DS (GDT_ENTRY_KERNEL_DS*8) + #define __USER_DS (GDT_ENTRY_DEFAULT_USER_DS*8+3) + #define __USER_CS (GDT_ENTRY_DEFAULT_USER_CS*8+3) +@@ -263,7 +279,7 @@ static inline unsigned long get_limit(unsigned long segment) + { + unsigned long __limit; + asm("lsll %1,%0" : "=r" (__limit) : "r" (segment)); +- return __limit + 1; ++ return __limit; + } + + #endif /* !__ASSEMBLY__ */ +diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h +index 0434c40..1714bf0 100644 +--- a/arch/x86/include/asm/smp.h ++++ b/arch/x86/include/asm/smp.h +@@ -36,7 +36,7 @@ DECLARE_PER_CPU(cpumask_var_t, cpu_core_map); + /* cpus sharing the last level cache: */ + DECLARE_PER_CPU(cpumask_var_t, cpu_llc_shared_map); + DECLARE_PER_CPU(u16, cpu_llc_id); +-DECLARE_PER_CPU(int, cpu_number); ++DECLARE_PER_CPU(unsigned int, cpu_number); + + static inline struct cpumask *cpu_sibling_mask(int cpu) + { +@@ -77,7 +77,7 @@ struct smp_ops { + + void (*send_call_func_ipi)(const struct cpumask *mask); + void (*send_call_func_single_ipi)(int cpu); +-}; ++} __no_const; + + /* Globals due to paravirt */ + extern void set_cpu_sibling_map(int cpu); +@@ -192,14 +192,8 @@ extern unsigned disabled_cpus __cpuinitdata; + extern int safe_smp_processor_id(void); + + #elif defined(CONFIG_X86_64_SMP) +-#define raw_smp_processor_id() (percpu_read(cpu_number)) +- +-#define stack_smp_processor_id() \ +-({ \ +- struct thread_info *ti; \ +- __asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \ +- ti->cpu; \ +-}) ++#define raw_smp_processor_id() (percpu_read(cpu_number)) ++#define stack_smp_processor_id() raw_smp_processor_id() + #define safe_smp_processor_id() smp_processor_id() + + #endif +diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h +index 76bfa2c..12d3fe7 100644 +--- a/arch/x86/include/asm/spinlock.h ++++ b/arch/x86/include/asm/spinlock.h +@@ -175,6 +175,14 @@ static inline int arch_write_can_lock(arch_rwlock_t *lock) + static inline void arch_read_lock(arch_rwlock_t *rw) + { + asm volatile(LOCK_PREFIX READ_LOCK_SIZE(dec) " (%0)\n\t" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX READ_LOCK_SIZE(inc) " (%0)\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ + "jns 1f\n" + "call __read_lock_failed\n\t" + "1:\n" +@@ -184,6 +192,14 @@ static inline void arch_read_lock(arch_rwlock_t *rw) + static inline void arch_write_lock(arch_rwlock_t *rw) + { + asm volatile(LOCK_PREFIX WRITE_LOCK_SUB(%1) "(%0)\n\t" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX WRITE_LOCK_ADD(%1) "(%0)\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ + "jz 1f\n" + "call __write_lock_failed\n\t" + "1:\n" +@@ -213,13 +229,29 @@ static inline int arch_write_trylock(arch_rwlock_t *lock) + + static inline void arch_read_unlock(arch_rwlock_t *rw) + { +- asm volatile(LOCK_PREFIX READ_LOCK_SIZE(inc) " %0" ++ asm volatile(LOCK_PREFIX READ_LOCK_SIZE(inc) " %0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX READ_LOCK_SIZE(dec) " %0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ + :"+m" (rw->lock) : : "memory"); + } + + static inline void arch_write_unlock(arch_rwlock_t *rw) + { +- asm volatile(LOCK_PREFIX WRITE_LOCK_ADD(%1) "%0" ++ asm volatile(LOCK_PREFIX WRITE_LOCK_ADD(%1) "%0\n" ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ "jno 0f\n" ++ LOCK_PREFIX WRITE_LOCK_SUB(%1) "%0\n" ++ "int $4\n0:\n" ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ + : "+m" (rw->write) : "i" (RW_LOCK_BIAS) : "memory"); + } + +diff --git a/arch/x86/include/asm/stackprotector.h b/arch/x86/include/asm/stackprotector.h +index b5d9533..41655fa 100644 +--- a/arch/x86/include/asm/stackprotector.h ++++ b/arch/x86/include/asm/stackprotector.h +@@ -47,7 +47,7 @@ + * head_32 for boot CPU and setup_per_cpu_areas() for others. + */ + #define GDT_STACK_CANARY_INIT \ +- [GDT_ENTRY_STACK_CANARY] = GDT_ENTRY_INIT(0x4090, 0, 0x18), ++ [GDT_ENTRY_STACK_CANARY] = GDT_ENTRY_INIT(0x4090, 0, 0x17), + + /* + * Initialize the stackprotector canary value. +@@ -112,7 +112,7 @@ static inline void setup_stack_canary_segment(int cpu) + + static inline void load_stack_canary_segment(void) + { +-#ifdef CONFIG_X86_32 ++#if defined(CONFIG_X86_32) && !defined(CONFIG_PAX_MEMORY_UDEREF) + asm volatile ("mov %0, %%gs" : : "r" (0)); + #endif + } +diff --git a/arch/x86/include/asm/stacktrace.h b/arch/x86/include/asm/stacktrace.h +index 70bbe39..4ae2bd4 100644 +--- a/arch/x86/include/asm/stacktrace.h ++++ b/arch/x86/include/asm/stacktrace.h +@@ -11,28 +11,20 @@ + + extern int kstack_depth_to_print; + +-struct thread_info; ++struct task_struct; + struct stacktrace_ops; + +-typedef unsigned long (*walk_stack_t)(struct thread_info *tinfo, +- unsigned long *stack, +- unsigned long bp, +- const struct stacktrace_ops *ops, +- void *data, +- unsigned long *end, +- int *graph); ++typedef unsigned long walk_stack_t(struct task_struct *task, ++ void *stack_start, ++ unsigned long *stack, ++ unsigned long bp, ++ const struct stacktrace_ops *ops, ++ void *data, ++ unsigned long *end, ++ int *graph); + +-extern unsigned long +-print_context_stack(struct thread_info *tinfo, +- unsigned long *stack, unsigned long bp, +- const struct stacktrace_ops *ops, void *data, +- unsigned long *end, int *graph); +- +-extern unsigned long +-print_context_stack_bp(struct thread_info *tinfo, +- unsigned long *stack, unsigned long bp, +- const struct stacktrace_ops *ops, void *data, +- unsigned long *end, int *graph); ++extern walk_stack_t print_context_stack; ++extern walk_stack_t print_context_stack_bp; + + /* Generic stack tracer with callbacks */ + +@@ -40,7 +32,7 @@ struct stacktrace_ops { + void (*address)(void *data, unsigned long address, int reliable); + /* On negative return stop dumping */ + int (*stack)(void *data, char *name); +- walk_stack_t walk_stack; ++ walk_stack_t *walk_stack; + }; + + void dump_trace(struct task_struct *tsk, struct pt_regs *regs, +diff --git a/arch/x86/include/asm/switch_to.h b/arch/x86/include/asm/switch_to.h +index 4ec45b3..a4f0a8a 100644 +--- a/arch/x86/include/asm/switch_to.h ++++ b/arch/x86/include/asm/switch_to.h +@@ -108,7 +108,7 @@ do { \ + "call __switch_to\n\t" \ + "movq "__percpu_arg([current_task])",%%rsi\n\t" \ + __switch_canary \ +- "movq %P[thread_info](%%rsi),%%r8\n\t" \ ++ "movq "__percpu_arg([thread_info])",%%r8\n\t" \ + "movq %%rax,%%rdi\n\t" \ + "testl %[_tif_fork],%P[ti_flags](%%r8)\n\t" \ + "jnz ret_from_fork\n\t" \ +@@ -119,7 +119,7 @@ do { \ + [threadrsp] "i" (offsetof(struct task_struct, thread.sp)), \ + [ti_flags] "i" (offsetof(struct thread_info, flags)), \ + [_tif_fork] "i" (_TIF_FORK), \ +- [thread_info] "i" (offsetof(struct task_struct, stack)), \ ++ [thread_info] "m" (current_tinfo), \ + [current_task] "m" (current_task) \ + __switch_canary_iparam \ + : "memory", "cc" __EXTRA_CLOBBER) +diff --git a/arch/x86/include/asm/sys_ia32.h b/arch/x86/include/asm/sys_ia32.h +index 3fda9db4..4ca1c61 100644 +--- a/arch/x86/include/asm/sys_ia32.h ++++ b/arch/x86/include/asm/sys_ia32.h +@@ -40,7 +40,7 @@ asmlinkage long sys32_sigaction(int, struct old_sigaction32 __user *, + struct old_sigaction32 __user *); + asmlinkage long sys32_alarm(unsigned int); + +-asmlinkage long sys32_waitpid(compat_pid_t, unsigned int *, int); ++asmlinkage long sys32_waitpid(compat_pid_t, unsigned int __user *, int); + asmlinkage long sys32_sysfs(int, u32, u32); + + asmlinkage long sys32_sched_rr_get_interval(compat_pid_t, +diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h +index ad6df8c..5e0cf6e 100644 +--- a/arch/x86/include/asm/thread_info.h ++++ b/arch/x86/include/asm/thread_info.h +@@ -10,6 +10,7 @@ + #include <linux/compiler.h> + #include <asm/page.h> + #include <asm/types.h> ++#include <asm/percpu.h> + + /* + * low level task data that entry.S needs immediate access to +@@ -24,7 +25,6 @@ struct exec_domain; + #include <linux/atomic.h> + + struct thread_info { +- struct task_struct *task; /* main task structure */ + struct exec_domain *exec_domain; /* execution domain */ + __u32 flags; /* low level flags */ + __u32 status; /* thread synchronous flags */ +@@ -34,19 +34,13 @@ struct thread_info { + mm_segment_t addr_limit; + struct restart_block restart_block; + void __user *sysenter_return; +-#ifdef CONFIG_X86_32 +- unsigned long previous_esp; /* ESP of the previous stack in +- case of nested (IRQ) stacks +- */ +- __u8 supervisor_stack[0]; +-#endif ++ unsigned long lowest_stack; + unsigned int sig_on_uaccess_error:1; + unsigned int uaccess_err:1; /* uaccess failed */ + }; + +-#define INIT_THREAD_INFO(tsk) \ ++#define INIT_THREAD_INFO \ + { \ +- .task = &tsk, \ + .exec_domain = &default_exec_domain, \ + .flags = 0, \ + .cpu = 0, \ +@@ -57,7 +51,7 @@ struct thread_info { + }, \ + } + +-#define init_thread_info (init_thread_union.thread_info) ++#define init_thread_info (init_thread_union.stack) + #define init_stack (init_thread_union.stack) + + #else /* !__ASSEMBLY__ */ +@@ -97,6 +91,7 @@ struct thread_info { + #define TIF_SYSCALL_TRACEPOINT 28 /* syscall tracepoint instrumentation */ + #define TIF_ADDR32 29 /* 32-bit address space on 64 bits */ + #define TIF_X32 30 /* 32-bit native x86-64 binary */ ++#define TIF_GRSEC_SETXID 31 /* update credentials on syscall entry/exit */ + + #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) + #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) +@@ -120,16 +115,18 @@ struct thread_info { + #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) + #define _TIF_ADDR32 (1 << TIF_ADDR32) + #define _TIF_X32 (1 << TIF_X32) ++#define _TIF_GRSEC_SETXID (1 << TIF_GRSEC_SETXID) + + /* work to do in syscall_trace_enter() */ + #define _TIF_WORK_SYSCALL_ENTRY \ + (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_EMU | _TIF_SYSCALL_AUDIT | \ +- _TIF_SECCOMP | _TIF_SINGLESTEP | _TIF_SYSCALL_TRACEPOINT) ++ _TIF_SECCOMP | _TIF_SINGLESTEP | _TIF_SYSCALL_TRACEPOINT | \ ++ _TIF_GRSEC_SETXID) + + /* work to do in syscall_trace_leave() */ + #define _TIF_WORK_SYSCALL_EXIT \ + (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SINGLESTEP | \ +- _TIF_SYSCALL_TRACEPOINT) ++ _TIF_SYSCALL_TRACEPOINT | _TIF_GRSEC_SETXID) + + /* work to do on interrupt/exception return */ + #define _TIF_WORK_MASK \ +@@ -139,7 +136,8 @@ struct thread_info { + + /* work to do on any return to user space */ + #define _TIF_ALLWORK_MASK \ +- ((0x0000FFFF & ~_TIF_SECCOMP) | _TIF_SYSCALL_TRACEPOINT) ++ ((0x0000FFFF & ~_TIF_SECCOMP) | _TIF_SYSCALL_TRACEPOINT | \ ++ _TIF_GRSEC_SETXID) + + /* Only used for 64 bit */ + #define _TIF_DO_NOTIFY_MASK \ +@@ -173,45 +171,40 @@ struct thread_info { + ret; \ + }) + +-#ifdef CONFIG_X86_32 +- +-#define STACK_WARN (THREAD_SIZE/8) +-/* +- * macros/functions for gaining access to the thread information structure +- * +- * preempt_count needs to be 1 initially, until the scheduler is functional. +- */ +-#ifndef __ASSEMBLY__ +- +- +-/* how to get the current stack pointer from C */ +-register unsigned long current_stack_pointer asm("esp") __used; +- +-/* how to get the thread information struct from C */ +-static inline struct thread_info *current_thread_info(void) +-{ +- return (struct thread_info *) +- (current_stack_pointer & ~(THREAD_SIZE - 1)); +-} +- +-#else /* !__ASSEMBLY__ */ +- ++#ifdef __ASSEMBLY__ + /* how to get the thread information struct from ASM */ + #define GET_THREAD_INFO(reg) \ +- movl $-THREAD_SIZE, reg; \ +- andl %esp, reg ++ mov PER_CPU_VAR(current_tinfo), reg + + /* use this one if reg already contains %esp */ +-#define GET_THREAD_INFO_WITH_ESP(reg) \ +- andl $-THREAD_SIZE, reg ++#define GET_THREAD_INFO_WITH_ESP(reg) GET_THREAD_INFO(reg) ++#else ++/* how to get the thread information struct from C */ ++DECLARE_PER_CPU(struct thread_info *, current_tinfo); ++ ++static __always_inline struct thread_info *current_thread_info(void) ++{ ++ return percpu_read_stable(current_tinfo); ++} ++#endif ++ ++#ifdef CONFIG_X86_32 ++ ++#define STACK_WARN (THREAD_SIZE/8) ++/* ++ * macros/functions for gaining access to the thread information structure ++ * ++ * preempt_count needs to be 1 initially, until the scheduler is functional. ++ */ ++#ifndef __ASSEMBLY__ ++ ++/* how to get the current stack pointer from C */ ++register unsigned long current_stack_pointer asm("esp") __used; + + #endif + + #else /* X86_32 */ + +-#include <asm/percpu.h> +-#define KERNEL_STACK_OFFSET (5*8) +- + /* + * macros/functions for gaining access to the thread information structure + * preempt_count needs to be 1 initially, until the scheduler is functional. +@@ -219,27 +212,8 @@ static inline struct thread_info *current_thread_info(void) + #ifndef __ASSEMBLY__ + DECLARE_PER_CPU(unsigned long, kernel_stack); + +-static inline struct thread_info *current_thread_info(void) +-{ +- struct thread_info *ti; +- ti = (void *)(percpu_read_stable(kernel_stack) + +- KERNEL_STACK_OFFSET - THREAD_SIZE); +- return ti; +-} +- +-#else /* !__ASSEMBLY__ */ +- +-/* how to get the thread information struct from ASM */ +-#define GET_THREAD_INFO(reg) \ +- movq PER_CPU_VAR(kernel_stack),reg ; \ +- subq $(THREAD_SIZE-KERNEL_STACK_OFFSET),reg +- +-/* +- * Same if PER_CPU_VAR(kernel_stack) is, perhaps with some offset, already in +- * a certain register (to be used in assembler memory operands). +- */ +-#define THREAD_INFO(reg, off) KERNEL_STACK_OFFSET+(off)-THREAD_SIZE(reg) +- ++/* how to get the current stack pointer from C */ ++register unsigned long current_stack_pointer asm("rsp") __used; + #endif + + #endif /* !X86_32 */ +@@ -285,5 +259,16 @@ extern void arch_task_cache_init(void); + extern void free_thread_info(struct thread_info *ti); + extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src); + #define arch_task_cache_init arch_task_cache_init ++ ++#define __HAVE_THREAD_FUNCTIONS ++#define task_thread_info(task) (&(task)->tinfo) ++#define task_stack_page(task) ((task)->stack) ++#define setup_thread_stack(p, org) do {} while (0) ++#define end_of_stack(p) ((unsigned long *)task_stack_page(p) + 1) ++ ++#define __HAVE_ARCH_TASK_STRUCT_ALLOCATOR ++extern struct task_struct *alloc_task_struct_node(int node); ++extern void free_task_struct(struct task_struct *); ++ + #endif + #endif /* _ASM_X86_THREAD_INFO_H */ +diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h +index e054459..14bc8a7 100644 +--- a/arch/x86/include/asm/uaccess.h ++++ b/arch/x86/include/asm/uaccess.h +@@ -7,12 +7,15 @@ + #include <linux/compiler.h> + #include <linux/thread_info.h> + #include <linux/string.h> ++#include <linux/sched.h> + #include <asm/asm.h> + #include <asm/page.h> + + #define VERIFY_READ 0 + #define VERIFY_WRITE 1 + ++extern void check_object_size(const void *ptr, unsigned long n, bool to); ++ + /* + * The fs value determines whether argument validity checking should be + * performed or not. If get_fs() == USER_DS, checking is performed, with +@@ -28,7 +31,12 @@ + + #define get_ds() (KERNEL_DS) + #define get_fs() (current_thread_info()->addr_limit) ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) ++void __set_fs(mm_segment_t x); ++void set_fs(mm_segment_t x); ++#else + #define set_fs(x) (current_thread_info()->addr_limit = (x)) ++#endif + + #define segment_eq(a, b) ((a).seg == (b).seg) + +@@ -76,7 +84,33 @@ + * checks that the pointer is in the user space range - after calling + * this function, memory access functions may still return -EFAULT. + */ +-#define access_ok(type, addr, size) (likely(__range_not_ok(addr, size) == 0)) ++#define __access_ok(type, addr, size) (likely(__range_not_ok(addr, size) == 0)) ++#define access_ok(type, addr, size) \ ++({ \ ++ long __size = size; \ ++ unsigned long __addr = (unsigned long)addr; \ ++ unsigned long __addr_ao = __addr & PAGE_MASK; \ ++ unsigned long __end_ao = __addr + __size - 1; \ ++ bool __ret_ao = __range_not_ok(__addr, __size) == 0; \ ++ if (__ret_ao && unlikely((__end_ao ^ __addr_ao) & PAGE_MASK)) { \ ++ while(__addr_ao <= __end_ao) { \ ++ char __c_ao; \ ++ __addr_ao += PAGE_SIZE; \ ++ if (__size > PAGE_SIZE) \ ++ cond_resched(); \ ++ if (__get_user(__c_ao, (char __user *)__addr)) \ ++ break; \ ++ if (type != VERIFY_WRITE) { \ ++ __addr = __addr_ao; \ ++ continue; \ ++ } \ ++ if (__put_user(__c_ao, (char __user *)__addr)) \ ++ break; \ ++ __addr = __addr_ao; \ ++ } \ ++ } \ ++ __ret_ao; \ ++}) + + /* + * The exception table consists of pairs of addresses: the first is the +@@ -182,12 +216,20 @@ extern int __get_user_bad(void); + asm volatile("call __put_user_" #size : "=a" (__ret_pu) \ + : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") + +- ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) ++#define __copyuser_seg "gs;" ++#define __COPYUSER_SET_ES "pushl %%gs; popl %%es\n" ++#define __COPYUSER_RESTORE_ES "pushl %%ss; popl %%es\n" ++#else ++#define __copyuser_seg ++#define __COPYUSER_SET_ES ++#define __COPYUSER_RESTORE_ES ++#endif + + #ifdef CONFIG_X86_32 + #define __put_user_asm_u64(x, addr, err, errret) \ +- asm volatile("1: movl %%eax,0(%2)\n" \ +- "2: movl %%edx,4(%2)\n" \ ++ asm volatile("1: "__copyuser_seg"movl %%eax,0(%2)\n" \ ++ "2: "__copyuser_seg"movl %%edx,4(%2)\n" \ + "3:\n" \ + ".section .fixup,\"ax\"\n" \ + "4: movl %3,%0\n" \ +@@ -199,8 +241,8 @@ extern int __get_user_bad(void); + : "A" (x), "r" (addr), "i" (errret), "0" (err)) + + #define __put_user_asm_ex_u64(x, addr) \ +- asm volatile("1: movl %%eax,0(%1)\n" \ +- "2: movl %%edx,4(%1)\n" \ ++ asm volatile("1: "__copyuser_seg"movl %%eax,0(%1)\n" \ ++ "2: "__copyuser_seg"movl %%edx,4(%1)\n" \ + "3:\n" \ + _ASM_EXTABLE(1b, 2b - 1b) \ + _ASM_EXTABLE(2b, 3b - 2b) \ +@@ -252,7 +294,7 @@ extern void __put_user_8(void); + __typeof__(*(ptr)) __pu_val; \ + __chk_user_ptr(ptr); \ + might_fault(); \ +- __pu_val = x; \ ++ __pu_val = (x); \ + switch (sizeof(*(ptr))) { \ + case 1: \ + __put_user_x(1, __pu_val, ptr, __ret_pu); \ +@@ -373,7 +415,7 @@ do { \ + } while (0) + + #define __get_user_asm(x, addr, err, itype, rtype, ltype, errret) \ +- asm volatile("1: mov"itype" %2,%"rtype"1\n" \ ++ asm volatile("1: "__copyuser_seg"mov"itype" %2,%"rtype"1\n"\ + "2:\n" \ + ".section .fixup,\"ax\"\n" \ + "3: mov %3,%0\n" \ +@@ -381,7 +423,7 @@ do { \ + " jmp 2b\n" \ + ".previous\n" \ + _ASM_EXTABLE(1b, 3b) \ +- : "=r" (err), ltype(x) \ ++ : "=r" (err), ltype (x) \ + : "m" (__m(addr)), "i" (errret), "0" (err)) + + #define __get_user_size_ex(x, ptr, size) \ +@@ -406,7 +448,7 @@ do { \ + } while (0) + + #define __get_user_asm_ex(x, addr, itype, rtype, ltype) \ +- asm volatile("1: mov"itype" %1,%"rtype"0\n" \ ++ asm volatile("1: "__copyuser_seg"mov"itype" %1,%"rtype"0\n"\ + "2:\n" \ + _ASM_EXTABLE(1b, 2b - 1b) \ + : ltype(x) : "m" (__m(addr))) +@@ -423,13 +465,24 @@ do { \ + int __gu_err; \ + unsigned long __gu_val; \ + __get_user_size(__gu_val, (ptr), (size), __gu_err, -EFAULT); \ +- (x) = (__force __typeof__(*(ptr)))__gu_val; \ ++ (x) = (__typeof__(*(ptr)))__gu_val; \ + __gu_err; \ + }) + + /* FIXME: this hack is definitely wrong -AK */ + struct __large_struct { unsigned long buf[100]; }; +-#define __m(x) (*(struct __large_struct __user *)(x)) ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++#define ____m(x) \ ++({ \ ++ unsigned long ____x = (unsigned long)(x); \ ++ if (____x < PAX_USER_SHADOW_BASE) \ ++ ____x += PAX_USER_SHADOW_BASE; \ ++ (void __user *)____x; \ ++}) ++#else ++#define ____m(x) (x) ++#endif ++#define __m(x) (*(struct __large_struct __user *)____m(x)) + + /* + * Tell gcc we read from memory instead of writing: this is because +@@ -437,7 +490,7 @@ struct __large_struct { unsigned long buf[100]; }; + * aliasing issues. + */ + #define __put_user_asm(x, addr, err, itype, rtype, ltype, errret) \ +- asm volatile("1: mov"itype" %"rtype"1,%2\n" \ ++ asm volatile("1: "__copyuser_seg"mov"itype" %"rtype"1,%2\n"\ + "2:\n" \ + ".section .fixup,\"ax\"\n" \ + "3: mov %3,%0\n" \ +@@ -445,10 +498,10 @@ struct __large_struct { unsigned long buf[100]; }; + ".previous\n" \ + _ASM_EXTABLE(1b, 3b) \ + : "=r"(err) \ +- : ltype(x), "m" (__m(addr)), "i" (errret), "0" (err)) ++ : ltype (x), "m" (__m(addr)), "i" (errret), "0" (err)) + + #define __put_user_asm_ex(x, addr, itype, rtype, ltype) \ +- asm volatile("1: mov"itype" %"rtype"0,%1\n" \ ++ asm volatile("1: "__copyuser_seg"mov"itype" %"rtype"0,%1\n"\ + "2:\n" \ + _ASM_EXTABLE(1b, 2b - 1b) \ + : : ltype(x), "m" (__m(addr))) +@@ -487,8 +540,12 @@ struct __large_struct { unsigned long buf[100]; }; + * On error, the variable @x is set to zero. + */ + ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++#define __get_user(x, ptr) get_user((x), (ptr)) ++#else + #define __get_user(x, ptr) \ + __get_user_nocheck((x), (ptr), sizeof(*(ptr))) ++#endif + + /** + * __put_user: - Write a simple value into user space, with less checking. +@@ -510,8 +567,12 @@ struct __large_struct { unsigned long buf[100]; }; + * Returns zero on success, or -EFAULT on error. + */ + ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++#define __put_user(x, ptr) put_user((x), (ptr)) ++#else + #define __put_user(x, ptr) \ + __put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr))) ++#endif + + #define __get_user_unaligned __get_user + #define __put_user_unaligned __put_user +@@ -529,7 +590,7 @@ struct __large_struct { unsigned long buf[100]; }; + #define get_user_ex(x, ptr) do { \ + unsigned long __gue_val; \ + __get_user_size_ex((__gue_val), (ptr), (sizeof(*(ptr)))); \ +- (x) = (__force __typeof__(*(ptr)))__gue_val; \ ++ (x) = (__typeof__(*(ptr)))__gue_val; \ + } while (0) + + #ifdef CONFIG_X86_WP_WORKS_OK +diff --git a/arch/x86/include/asm/uaccess_32.h b/arch/x86/include/asm/uaccess_32.h +index 8084bc7..3d6ec37 100644 +--- a/arch/x86/include/asm/uaccess_32.h ++++ b/arch/x86/include/asm/uaccess_32.h +@@ -11,15 +11,15 @@ + #include <asm/page.h> + + unsigned long __must_check __copy_to_user_ll +- (void __user *to, const void *from, unsigned long n); ++ (void __user *to, const void *from, unsigned long n) __size_overflow(3); + unsigned long __must_check __copy_from_user_ll +- (void *to, const void __user *from, unsigned long n); ++ (void *to, const void __user *from, unsigned long n) __size_overflow(3); + unsigned long __must_check __copy_from_user_ll_nozero +- (void *to, const void __user *from, unsigned long n); ++ (void *to, const void __user *from, unsigned long n) __size_overflow(3); + unsigned long __must_check __copy_from_user_ll_nocache +- (void *to, const void __user *from, unsigned long n); ++ (void *to, const void __user *from, unsigned long n) __size_overflow(3); + unsigned long __must_check __copy_from_user_ll_nocache_nozero +- (void *to, const void __user *from, unsigned long n); ++ (void *to, const void __user *from, unsigned long n) __size_overflow(3); + + /** + * __copy_to_user_inatomic: - Copy a block of data into user space, with less checking. +@@ -43,6 +43,9 @@ unsigned long __must_check __copy_from_user_ll_nocache_nozero + static __always_inline unsigned long __must_check + __copy_to_user_inatomic(void __user *to, const void *from, unsigned long n) + { ++ if ((long)n < 0) ++ return n; ++ + if (__builtin_constant_p(n)) { + unsigned long ret; + +@@ -61,6 +64,8 @@ __copy_to_user_inatomic(void __user *to, const void *from, unsigned long n) + return ret; + } + } ++ if (!__builtin_constant_p(n)) ++ check_object_size(from, n, true); + return __copy_to_user_ll(to, from, n); + } + +@@ -82,12 +87,16 @@ static __always_inline unsigned long __must_check + __copy_to_user(void __user *to, const void *from, unsigned long n) + { + might_fault(); ++ + return __copy_to_user_inatomic(to, from, n); + } + + static __always_inline unsigned long + __copy_from_user_inatomic(void *to, const void __user *from, unsigned long n) + { ++ if ((long)n < 0) ++ return n; ++ + /* Avoid zeroing the tail if the copy fails.. + * If 'n' is constant and 1, 2, or 4, we do still zero on a failure, + * but as the zeroing behaviour is only significant when n is not +@@ -137,6 +146,10 @@ static __always_inline unsigned long + __copy_from_user(void *to, const void __user *from, unsigned long n) + { + might_fault(); ++ ++ if ((long)n < 0) ++ return n; ++ + if (__builtin_constant_p(n)) { + unsigned long ret; + +@@ -152,6 +165,8 @@ __copy_from_user(void *to, const void __user *from, unsigned long n) + return ret; + } + } ++ if (!__builtin_constant_p(n)) ++ check_object_size(to, n, false); + return __copy_from_user_ll(to, from, n); + } + +@@ -159,6 +174,10 @@ static __always_inline unsigned long __copy_from_user_nocache(void *to, + const void __user *from, unsigned long n) + { + might_fault(); ++ ++ if ((long)n < 0) ++ return n; ++ + if (__builtin_constant_p(n)) { + unsigned long ret; + +@@ -181,15 +200,19 @@ static __always_inline unsigned long + __copy_from_user_inatomic_nocache(void *to, const void __user *from, + unsigned long n) + { +- return __copy_from_user_ll_nocache_nozero(to, from, n); ++ if ((long)n < 0) ++ return n; ++ ++ return __copy_from_user_ll_nocache_nozero(to, from, n); + } + +-unsigned long __must_check copy_to_user(void __user *to, +- const void *from, unsigned long n); +-unsigned long __must_check _copy_from_user(void *to, +- const void __user *from, +- unsigned long n); +- ++extern void copy_to_user_overflow(void) ++#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS ++ __compiletime_error("copy_to_user() buffer size is not provably correct") ++#else ++ __compiletime_warning("copy_to_user() buffer size is not provably correct") ++#endif ++; + + extern void copy_from_user_overflow(void) + #ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS +@@ -199,17 +222,61 @@ extern void copy_from_user_overflow(void) + #endif + ; + +-static inline unsigned long __must_check copy_from_user(void *to, +- const void __user *from, +- unsigned long n) ++/** ++ * copy_to_user: - Copy a block of data into user space. ++ * @to: Destination address, in user space. ++ * @from: Source address, in kernel space. ++ * @n: Number of bytes to copy. ++ * ++ * Context: User context only. This function may sleep. ++ * ++ * Copy data from kernel space to user space. ++ * ++ * Returns number of bytes that could not be copied. ++ * On success, this will be zero. ++ */ ++static inline unsigned long __must_check ++copy_to_user(void __user *to, const void *from, unsigned long n) + { +- int sz = __compiletime_object_size(to); ++ size_t sz = __compiletime_object_size(from); + +- if (likely(sz == -1 || sz >= n)) +- n = _copy_from_user(to, from, n); +- else ++ if (unlikely(sz != (size_t)-1 && sz < n)) ++ copy_to_user_overflow(); ++ else if (access_ok(VERIFY_WRITE, to, n)) ++ n = __copy_to_user(to, from, n); ++ return n; ++} ++ ++/** ++ * copy_from_user: - Copy a block of data from user space. ++ * @to: Destination address, in kernel space. ++ * @from: Source address, in user space. ++ * @n: Number of bytes to copy. ++ * ++ * Context: User context only. This function may sleep. ++ * ++ * Copy data from user space to kernel space. ++ * ++ * Returns number of bytes that could not be copied. ++ * On success, this will be zero. ++ * ++ * If some data could not be copied, this function will pad the copied ++ * data to the requested size using zero bytes. ++ */ ++static inline unsigned long __must_check ++copy_from_user(void *to, const void __user *from, unsigned long n) ++{ ++ size_t sz = __compiletime_object_size(to); ++ ++ if (unlikely(sz != (size_t)-1 && sz < n)) + copy_from_user_overflow(); +- ++ else if (access_ok(VERIFY_READ, from, n)) ++ n = __copy_from_user(to, from, n); ++ else if ((long)n > 0) { ++ if (!__builtin_constant_p(n)) ++ check_object_size(to, n, false); ++ memset(to, 0, n); ++ } + return n; + } + +@@ -230,7 +297,7 @@ static inline unsigned long __must_check copy_from_user(void *to, + #define strlen_user(str) strnlen_user(str, LONG_MAX) + + long strnlen_user(const char __user *str, long n); +-unsigned long __must_check clear_user(void __user *mem, unsigned long len); +-unsigned long __must_check __clear_user(void __user *mem, unsigned long len); ++unsigned long __must_check clear_user(void __user *mem, unsigned long len) __size_overflow(2); ++unsigned long __must_check __clear_user(void __user *mem, unsigned long len) __size_overflow(2); + + #endif /* _ASM_X86_UACCESS_32_H */ +diff --git a/arch/x86/include/asm/uaccess_64.h b/arch/x86/include/asm/uaccess_64.h +index fcd4b6f..ef04f8f 100644 +--- a/arch/x86/include/asm/uaccess_64.h ++++ b/arch/x86/include/asm/uaccess_64.h +@@ -10,6 +10,9 @@ + #include <asm/alternative.h> + #include <asm/cpufeature.h> + #include <asm/page.h> ++#include <asm/pgtable.h> ++ ++#define set_fs(x) (current_thread_info()->addr_limit = (x)) + + /* + * Copy To/From Userspace +@@ -17,12 +20,14 @@ + + /* Handles exceptions in both to and from, but doesn't do access_ok */ + __must_check unsigned long +-copy_user_generic_string(void *to, const void *from, unsigned len); ++copy_user_generic_string(void *to, const void *from, unsigned long len) __size_overflow(3); + __must_check unsigned long +-copy_user_generic_unrolled(void *to, const void *from, unsigned len); ++copy_user_generic_unrolled(void *to, const void *from, unsigned long len) __size_overflow(3); + + static __always_inline __must_check unsigned long +-copy_user_generic(void *to, const void *from, unsigned len) ++copy_user_generic(void *to, const void *from, unsigned long len) __size_overflow(3); ++static __always_inline __must_check unsigned long ++copy_user_generic(void *to, const void *from, unsigned long len) + { + unsigned ret; + +@@ -32,142 +37,238 @@ copy_user_generic(void *to, const void *from, unsigned len) + ASM_OUTPUT2("=a" (ret), "=D" (to), "=S" (from), + "=d" (len)), + "1" (to), "2" (from), "3" (len) +- : "memory", "rcx", "r8", "r9", "r10", "r11"); ++ : "memory", "rcx", "r8", "r9", "r11"); + return ret; + } + ++static __always_inline __must_check unsigned long ++__copy_to_user(void __user *to, const void *from, unsigned long len) __size_overflow(3); ++static __always_inline __must_check unsigned long ++__copy_from_user(void *to, const void __user *from, unsigned long len) __size_overflow(3); + __must_check unsigned long +-_copy_to_user(void __user *to, const void *from, unsigned len); +-__must_check unsigned long +-_copy_from_user(void *to, const void __user *from, unsigned len); +-__must_check unsigned long +-copy_in_user(void __user *to, const void __user *from, unsigned len); ++copy_in_user(void __user *to, const void __user *from, unsigned long len) __size_overflow(3); ++ ++extern void copy_to_user_overflow(void) ++#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS ++ __compiletime_error("copy_to_user() buffer size is not provably correct") ++#else ++ __compiletime_warning("copy_to_user() buffer size is not provably correct") ++#endif ++; ++ ++extern void copy_from_user_overflow(void) ++#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS ++ __compiletime_error("copy_from_user() buffer size is not provably correct") ++#else ++ __compiletime_warning("copy_from_user() buffer size is not provably correct") ++#endif ++; + + static inline unsigned long __must_check copy_from_user(void *to, + const void __user *from, + unsigned long n) + { +- int sz = __compiletime_object_size(to); +- + might_fault(); +- if (likely(sz == -1 || sz >= n)) +- n = _copy_from_user(to, from, n); +-#ifdef CONFIG_DEBUG_VM +- else +- WARN(1, "Buffer overflow detected!\n"); +-#endif ++ ++ if (access_ok(VERIFY_READ, from, n)) ++ n = __copy_from_user(to, from, n); ++ else if (n < INT_MAX) { ++ if (!__builtin_constant_p(n)) ++ check_object_size(to, n, false); ++ memset(to, 0, n); ++ } + return n; + } + + static __always_inline __must_check +-int copy_to_user(void __user *dst, const void *src, unsigned size) ++int copy_to_user(void __user *dst, const void *src, unsigned long size) + { + might_fault(); + +- return _copy_to_user(dst, src, size); ++ if (access_ok(VERIFY_WRITE, dst, size)) ++ size = __copy_to_user(dst, src, size); ++ return size; + } + + static __always_inline __must_check +-int __copy_from_user(void *dst, const void __user *src, unsigned size) ++unsigned long __copy_from_user(void *dst, const void __user *src, unsigned long size) + { +- int ret = 0; ++ size_t sz = __compiletime_object_size(dst); ++ unsigned ret = 0; + + might_fault(); +- if (!__builtin_constant_p(size)) +- return copy_user_generic(dst, (__force void *)src, size); ++ ++ if (size > INT_MAX) ++ return size; ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if (!__access_ok(VERIFY_READ, src, size)) ++ return size; ++#endif ++ ++ if (unlikely(sz != (size_t)-1 && sz < size)) { ++ copy_from_user_overflow(); ++ return size; ++ } ++ ++ if (!__builtin_constant_p(size)) { ++ check_object_size(dst, size, false); ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if ((unsigned long)src < PAX_USER_SHADOW_BASE) ++ src += PAX_USER_SHADOW_BASE; ++#endif ++ ++ return copy_user_generic(dst, (__force_kernel const void *)src, size); ++ } + switch (size) { +- case 1:__get_user_asm(*(u8 *)dst, (u8 __user *)src, ++ case 1:__get_user_asm(*(u8 *)dst, (const u8 __user *)src, + ret, "b", "b", "=q", 1); + return ret; +- case 2:__get_user_asm(*(u16 *)dst, (u16 __user *)src, ++ case 2:__get_user_asm(*(u16 *)dst, (const u16 __user *)src, + ret, "w", "w", "=r", 2); + return ret; +- case 4:__get_user_asm(*(u32 *)dst, (u32 __user *)src, ++ case 4:__get_user_asm(*(u32 *)dst, (const u32 __user *)src, + ret, "l", "k", "=r", 4); + return ret; +- case 8:__get_user_asm(*(u64 *)dst, (u64 __user *)src, ++ case 8:__get_user_asm(*(u64 *)dst, (const u64 __user *)src, + ret, "q", "", "=r", 8); + return ret; + case 10: +- __get_user_asm(*(u64 *)dst, (u64 __user *)src, ++ __get_user_asm(*(u64 *)dst, (const u64 __user *)src, + ret, "q", "", "=r", 10); + if (unlikely(ret)) + return ret; + __get_user_asm(*(u16 *)(8 + (char *)dst), +- (u16 __user *)(8 + (char __user *)src), ++ (const u16 __user *)(8 + (const char __user *)src), + ret, "w", "w", "=r", 2); + return ret; + case 16: +- __get_user_asm(*(u64 *)dst, (u64 __user *)src, ++ __get_user_asm(*(u64 *)dst, (const u64 __user *)src, + ret, "q", "", "=r", 16); + if (unlikely(ret)) + return ret; + __get_user_asm(*(u64 *)(8 + (char *)dst), +- (u64 __user *)(8 + (char __user *)src), ++ (const u64 __user *)(8 + (const char __user *)src), + ret, "q", "", "=r", 8); + return ret; + default: +- return copy_user_generic(dst, (__force void *)src, size); ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if ((unsigned long)src < PAX_USER_SHADOW_BASE) ++ src += PAX_USER_SHADOW_BASE; ++#endif ++ ++ return copy_user_generic(dst, (__force_kernel const void *)src, size); + } + } + + static __always_inline __must_check +-int __copy_to_user(void __user *dst, const void *src, unsigned size) ++unsigned long __copy_to_user(void __user *dst, const void *src, unsigned long size) + { +- int ret = 0; ++ size_t sz = __compiletime_object_size(src); ++ unsigned ret = 0; + + might_fault(); +- if (!__builtin_constant_p(size)) +- return copy_user_generic((__force void *)dst, src, size); ++ ++ if (size > INT_MAX) ++ return size; ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if (!__access_ok(VERIFY_WRITE, dst, size)) ++ return size; ++#endif ++ ++ if (unlikely(sz != (size_t)-1 && sz < size)) { ++ copy_to_user_overflow(); ++ return size; ++ } ++ ++ if (!__builtin_constant_p(size)) { ++ check_object_size(src, size, true); ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if ((unsigned long)dst < PAX_USER_SHADOW_BASE) ++ dst += PAX_USER_SHADOW_BASE; ++#endif ++ ++ return copy_user_generic((__force_kernel void *)dst, src, size); ++ } + switch (size) { +- case 1:__put_user_asm(*(u8 *)src, (u8 __user *)dst, ++ case 1:__put_user_asm(*(const u8 *)src, (u8 __user *)dst, + ret, "b", "b", "iq", 1); + return ret; +- case 2:__put_user_asm(*(u16 *)src, (u16 __user *)dst, ++ case 2:__put_user_asm(*(const u16 *)src, (u16 __user *)dst, + ret, "w", "w", "ir", 2); + return ret; +- case 4:__put_user_asm(*(u32 *)src, (u32 __user *)dst, ++ case 4:__put_user_asm(*(const u32 *)src, (u32 __user *)dst, + ret, "l", "k", "ir", 4); + return ret; +- case 8:__put_user_asm(*(u64 *)src, (u64 __user *)dst, ++ case 8:__put_user_asm(*(const u64 *)src, (u64 __user *)dst, + ret, "q", "", "er", 8); + return ret; + case 10: +- __put_user_asm(*(u64 *)src, (u64 __user *)dst, ++ __put_user_asm(*(const u64 *)src, (u64 __user *)dst, + ret, "q", "", "er", 10); + if (unlikely(ret)) + return ret; + asm("":::"memory"); +- __put_user_asm(4[(u16 *)src], 4 + (u16 __user *)dst, ++ __put_user_asm(4[(const u16 *)src], 4 + (u16 __user *)dst, + ret, "w", "w", "ir", 2); + return ret; + case 16: +- __put_user_asm(*(u64 *)src, (u64 __user *)dst, ++ __put_user_asm(*(const u64 *)src, (u64 __user *)dst, + ret, "q", "", "er", 16); + if (unlikely(ret)) + return ret; + asm("":::"memory"); +- __put_user_asm(1[(u64 *)src], 1 + (u64 __user *)dst, ++ __put_user_asm(1[(const u64 *)src], 1 + (u64 __user *)dst, + ret, "q", "", "er", 8); + return ret; + default: +- return copy_user_generic((__force void *)dst, src, size); ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if ((unsigned long)dst < PAX_USER_SHADOW_BASE) ++ dst += PAX_USER_SHADOW_BASE; ++#endif ++ ++ return copy_user_generic((__force_kernel void *)dst, src, size); + } + } + + static __always_inline __must_check +-int __copy_in_user(void __user *dst, const void __user *src, unsigned size) ++unsigned long __copy_in_user(void __user *dst, const void __user *src, unsigned long size) + { +- int ret = 0; ++ unsigned ret = 0; + + might_fault(); +- if (!__builtin_constant_p(size)) +- return copy_user_generic((__force void *)dst, +- (__force void *)src, size); ++ ++ if (size > INT_MAX) ++ return size; ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if (!__access_ok(VERIFY_READ, src, size)) ++ return size; ++ if (!__access_ok(VERIFY_WRITE, dst, size)) ++ return size; ++#endif ++ ++ if (!__builtin_constant_p(size)) { ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if ((unsigned long)src < PAX_USER_SHADOW_BASE) ++ src += PAX_USER_SHADOW_BASE; ++ if ((unsigned long)dst < PAX_USER_SHADOW_BASE) ++ dst += PAX_USER_SHADOW_BASE; ++#endif ++ ++ return copy_user_generic((__force_kernel void *)dst, ++ (__force_kernel const void *)src, size); ++ } + switch (size) { + case 1: { + u8 tmp; +- __get_user_asm(tmp, (u8 __user *)src, ++ __get_user_asm(tmp, (const u8 __user *)src, + ret, "b", "b", "=q", 1); + if (likely(!ret)) + __put_user_asm(tmp, (u8 __user *)dst, +@@ -176,7 +277,7 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size) + } + case 2: { + u16 tmp; +- __get_user_asm(tmp, (u16 __user *)src, ++ __get_user_asm(tmp, (const u16 __user *)src, + ret, "w", "w", "=r", 2); + if (likely(!ret)) + __put_user_asm(tmp, (u16 __user *)dst, +@@ -186,7 +287,7 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size) + + case 4: { + u32 tmp; +- __get_user_asm(tmp, (u32 __user *)src, ++ __get_user_asm(tmp, (const u32 __user *)src, + ret, "l", "k", "=r", 4); + if (likely(!ret)) + __put_user_asm(tmp, (u32 __user *)dst, +@@ -195,7 +296,7 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size) + } + case 8: { + u64 tmp; +- __get_user_asm(tmp, (u64 __user *)src, ++ __get_user_asm(tmp, (const u64 __user *)src, + ret, "q", "", "=r", 8); + if (likely(!ret)) + __put_user_asm(tmp, (u64 __user *)dst, +@@ -203,47 +304,92 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size) + return ret; + } + default: +- return copy_user_generic((__force void *)dst, +- (__force void *)src, size); ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if ((unsigned long)src < PAX_USER_SHADOW_BASE) ++ src += PAX_USER_SHADOW_BASE; ++ if ((unsigned long)dst < PAX_USER_SHADOW_BASE) ++ dst += PAX_USER_SHADOW_BASE; ++#endif ++ ++ return copy_user_generic((__force_kernel void *)dst, ++ (__force_kernel const void *)src, size); + } + } + + __must_check long strnlen_user(const char __user *str, long n); + __must_check long __strnlen_user(const char __user *str, long n); + __must_check long strlen_user(const char __user *str); +-__must_check unsigned long clear_user(void __user *mem, unsigned long len); +-__must_check unsigned long __clear_user(void __user *mem, unsigned long len); ++__must_check unsigned long clear_user(void __user *mem, unsigned long len) __size_overflow(2); ++__must_check unsigned long __clear_user(void __user *mem, unsigned long len) __size_overflow(2); + + static __must_check __always_inline int +-__copy_from_user_inatomic(void *dst, const void __user *src, unsigned size) ++__copy_from_user_inatomic(void *dst, const void __user *src, unsigned long size) + { +- return copy_user_generic(dst, (__force const void *)src, size); ++ if (size > INT_MAX) ++ return size; ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if (!__access_ok(VERIFY_READ, src, size)) ++ return size; ++ ++ if ((unsigned long)src < PAX_USER_SHADOW_BASE) ++ src += PAX_USER_SHADOW_BASE; ++#endif ++ ++ return copy_user_generic(dst, (__force_kernel const void *)src, size); + } + +-static __must_check __always_inline int +-__copy_to_user_inatomic(void __user *dst, const void *src, unsigned size) ++static __must_check __always_inline unsigned long ++__copy_to_user_inatomic(void __user *dst, const void *src, unsigned long size) + { +- return copy_user_generic((__force void *)dst, src, size); ++ if (size > INT_MAX) ++ return size; ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if (!__access_ok(VERIFY_WRITE, dst, size)) ++ return size; ++ ++ if ((unsigned long)dst < PAX_USER_SHADOW_BASE) ++ dst += PAX_USER_SHADOW_BASE; ++#endif ++ ++ return copy_user_generic((__force_kernel void *)dst, src, size); + } + +-extern long __copy_user_nocache(void *dst, const void __user *src, +- unsigned size, int zerorest); ++extern unsigned long __copy_user_nocache(void *dst, const void __user *src, ++ unsigned long size, int zerorest) __size_overflow(3); + +-static inline int +-__copy_from_user_nocache(void *dst, const void __user *src, unsigned size) ++static inline unsigned long __copy_from_user_nocache(void *dst, const void __user *src, unsigned long size) + { + might_sleep(); ++ ++ if (size > INT_MAX) ++ return size; ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if (!__access_ok(VERIFY_READ, src, size)) ++ return size; ++#endif ++ + return __copy_user_nocache(dst, src, size, 1); + } + +-static inline int +-__copy_from_user_inatomic_nocache(void *dst, const void __user *src, +- unsigned size) ++static inline unsigned long __copy_from_user_inatomic_nocache(void *dst, const void __user *src, ++ unsigned long size) + { ++ if (size > INT_MAX) ++ return size; ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if (!__access_ok(VERIFY_READ, src, size)) ++ return size; ++#endif ++ + return __copy_user_nocache(dst, src, size, 0); + } + +-unsigned long +-copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest); ++extern unsigned long ++copy_user_handle_tail(char __user *to, char __user *from, unsigned long len, unsigned zerorest) __size_overflow(3); + + #endif /* _ASM_X86_UACCESS_64_H */ +diff --git a/arch/x86/include/asm/vdso.h b/arch/x86/include/asm/vdso.h +index bb05228..d763d5b 100644 +--- a/arch/x86/include/asm/vdso.h ++++ b/arch/x86/include/asm/vdso.h +@@ -11,7 +11,7 @@ extern const char VDSO32_PRELINK[]; + #define VDSO32_SYMBOL(base, name) \ + ({ \ + extern const char VDSO32_##name[]; \ +- (void *)(VDSO32_##name - VDSO32_PRELINK + (unsigned long)(base)); \ ++ (void __user *)(VDSO32_##name - VDSO32_PRELINK + (unsigned long)(base)); \ + }) + #endif + +diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h +index 764b66a..ad3cfc8 100644 +--- a/arch/x86/include/asm/x86_init.h ++++ b/arch/x86/include/asm/x86_init.h +@@ -29,7 +29,7 @@ struct x86_init_mpparse { + void (*mpc_oem_bus_info)(struct mpc_bus *m, char *name); + void (*find_smp_config)(void); + void (*get_smp_config)(unsigned int early); +-}; ++} __no_const; + + /** + * struct x86_init_resources - platform specific resource related ops +@@ -43,7 +43,7 @@ struct x86_init_resources { + void (*probe_roms)(void); + void (*reserve_resources)(void); + char *(*memory_setup)(void); +-}; ++} __no_const; + + /** + * struct x86_init_irqs - platform specific interrupt setup +@@ -56,7 +56,7 @@ struct x86_init_irqs { + void (*pre_vector_init)(void); + void (*intr_init)(void); + void (*trap_init)(void); +-}; ++} __no_const; + + /** + * struct x86_init_oem - oem platform specific customizing functions +@@ -66,7 +66,7 @@ struct x86_init_irqs { + struct x86_init_oem { + void (*arch_setup)(void); + void (*banner)(void); +-}; ++} __no_const; + + /** + * struct x86_init_mapping - platform specific initial kernel pagetable setup +@@ -77,7 +77,7 @@ struct x86_init_oem { + */ + struct x86_init_mapping { + void (*pagetable_reserve)(u64 start, u64 end); +-}; ++} __no_const; + + /** + * struct x86_init_paging - platform specific paging functions +@@ -87,7 +87,7 @@ struct x86_init_mapping { + struct x86_init_paging { + void (*pagetable_setup_start)(pgd_t *base); + void (*pagetable_setup_done)(pgd_t *base); +-}; ++} __no_const; + + /** + * struct x86_init_timers - platform specific timer setup +@@ -102,7 +102,7 @@ struct x86_init_timers { + void (*tsc_pre_init)(void); + void (*timer_init)(void); + void (*wallclock_init)(void); +-}; ++} __no_const; + + /** + * struct x86_init_iommu - platform specific iommu setup +@@ -110,7 +110,7 @@ struct x86_init_timers { + */ + struct x86_init_iommu { + int (*iommu_init)(void); +-}; ++} __no_const; + + /** + * struct x86_init_pci - platform specific pci init functions +@@ -124,7 +124,7 @@ struct x86_init_pci { + int (*init)(void); + void (*init_irq)(void); + void (*fixup_irqs)(void); +-}; ++} __no_const; + + /** + * struct x86_init_ops - functions for platform specific setup +@@ -140,7 +140,7 @@ struct x86_init_ops { + struct x86_init_timers timers; + struct x86_init_iommu iommu; + struct x86_init_pci pci; +-}; ++} __no_const; + + /** + * struct x86_cpuinit_ops - platform specific cpu hotplug setups +@@ -151,7 +151,7 @@ struct x86_cpuinit_ops { + void (*setup_percpu_clockev)(void); + void (*early_percpu_clock_init)(void); + void (*fixup_cpu_id)(struct cpuinfo_x86 *c, int node); +-}; ++} __no_const; + + /** + * struct x86_platform_ops - platform specific runtime functions +@@ -177,7 +177,7 @@ struct x86_platform_ops { + int (*i8042_detect)(void); + void (*save_sched_clock_state)(void); + void (*restore_sched_clock_state)(void); +-}; ++} __no_const; + + struct pci_dev; + +@@ -186,7 +186,7 @@ struct x86_msi_ops { + void (*teardown_msi_irq)(unsigned int irq); + void (*teardown_msi_irqs)(struct pci_dev *dev); + void (*restore_msi_irqs)(struct pci_dev *dev, int irq); +-}; ++} __no_const; + + extern struct x86_init_ops x86_init; + extern struct x86_cpuinit_ops x86_cpuinit; +diff --git a/arch/x86/include/asm/xsave.h b/arch/x86/include/asm/xsave.h +index c6ce245..ffbdab7 100644 +--- a/arch/x86/include/asm/xsave.h ++++ b/arch/x86/include/asm/xsave.h +@@ -65,6 +65,11 @@ static inline int xsave_user(struct xsave_struct __user *buf) + { + int err; + ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++ if ((unsigned long)buf < PAX_USER_SHADOW_BASE) ++ buf = (struct xsave_struct __user *)((void __user*)buf + PAX_USER_SHADOW_BASE); ++#endif ++ + /* + * Clear the xsave header first, so that reserved fields are + * initialized to zero. +@@ -96,10 +101,15 @@ static inline int xsave_user(struct xsave_struct __user *buf) + static inline int xrestore_user(struct xsave_struct __user *buf, u64 mask) + { + int err; +- struct xsave_struct *xstate = ((__force struct xsave_struct *)buf); ++ struct xsave_struct *xstate = ((__force_kernel struct xsave_struct *)buf); + u32 lmask = mask; + u32 hmask = mask >> 32; + ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++ if ((unsigned long)xstate < PAX_USER_SHADOW_BASE) ++ xstate = (struct xsave_struct *)((void *)xstate + PAX_USER_SHADOW_BASE); ++#endif ++ + __asm__ __volatile__("1: .byte " REX_PREFIX "0x0f,0xae,0x2f\n" + "2:\n" + ".section .fixup,\"ax\"\n" +diff --git a/arch/x86/kernel/acpi/realmode/Makefile b/arch/x86/kernel/acpi/realmode/Makefile +index 6a564ac..9b1340c 100644 +--- a/arch/x86/kernel/acpi/realmode/Makefile ++++ b/arch/x86/kernel/acpi/realmode/Makefile +@@ -41,6 +41,9 @@ KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D_WAKEUP -D__KERNEL__ \ + $(call cc-option, -fno-stack-protector) \ + $(call cc-option, -mpreferred-stack-boundary=2) + KBUILD_CFLAGS += $(call cc-option, -m32) ++ifdef CONSTIFY_PLUGIN ++KBUILD_CFLAGS += $(CONSTIFY_PLUGIN) -fplugin-arg-constify_plugin-no-constify ++endif + KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ + GCOV_PROFILE := n + +diff --git a/arch/x86/kernel/acpi/realmode/wakeup.S b/arch/x86/kernel/acpi/realmode/wakeup.S +index b4fd836..4358fe3 100644 +--- a/arch/x86/kernel/acpi/realmode/wakeup.S ++++ b/arch/x86/kernel/acpi/realmode/wakeup.S +@@ -108,6 +108,9 @@ wakeup_code: + /* Do any other stuff... */ + + #ifndef CONFIG_64BIT ++ /* Recheck NX bit overrides (64bit path does this in trampoline */ ++ call verify_cpu ++ + /* This could also be done in C code... */ + movl pmode_cr3, %eax + movl %eax, %cr3 +@@ -131,6 +134,7 @@ wakeup_code: + movl pmode_cr0, %eax + movl %eax, %cr0 + jmp pmode_return ++# include "../../verify_cpu.S" + #else + pushw $0 + pushw trampoline_segment +diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c +index 146a49c..1b5338b 100644 +--- a/arch/x86/kernel/acpi/sleep.c ++++ b/arch/x86/kernel/acpi/sleep.c +@@ -98,8 +98,12 @@ int acpi_suspend_lowlevel(void) + header->trampoline_segment = trampoline_address() >> 4; + #ifdef CONFIG_SMP + stack_start = (unsigned long)temp_stack + sizeof(temp_stack); ++ ++ pax_open_kernel(); + early_gdt_descr.address = + (unsigned long)get_cpu_gdt_table(smp_processor_id()); ++ pax_close_kernel(); ++ + initial_gs = per_cpu_offset(smp_processor_id()); + #endif + initial_code = (unsigned long)wakeup_long64; +diff --git a/arch/x86/kernel/acpi/wakeup_32.S b/arch/x86/kernel/acpi/wakeup_32.S +index 7261083..5c12053 100644 +--- a/arch/x86/kernel/acpi/wakeup_32.S ++++ b/arch/x86/kernel/acpi/wakeup_32.S +@@ -30,13 +30,11 @@ wakeup_pmode_return: + # and restore the stack ... but you need gdt for this to work + movl saved_context_esp, %esp + +- movl %cs:saved_magic, %eax +- cmpl $0x12345678, %eax ++ cmpl $0x12345678, saved_magic + jne bogus_magic + + # jump to place where we left off +- movl saved_eip, %eax +- jmp *%eax ++ jmp *(saved_eip) + + bogus_magic: + jmp bogus_magic +diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c +index 1f84794..e23f862 100644 +--- a/arch/x86/kernel/alternative.c ++++ b/arch/x86/kernel/alternative.c +@@ -276,6 +276,13 @@ void __init_or_module apply_alternatives(struct alt_instr *start, + */ + for (a = start; a < end; a++) { + instr = (u8 *)&a->instr_offset + a->instr_offset; ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++ instr += ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR; ++ if (instr < (u8 *)_text || (u8 *)_einittext <= instr) ++ instr -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR; ++#endif ++ + replacement = (u8 *)&a->repl_offset + a->repl_offset; + BUG_ON(a->replacementlen > a->instrlen); + BUG_ON(a->instrlen > sizeof(insnbuf)); +@@ -307,10 +314,16 @@ static void alternatives_smp_lock(const s32 *start, const s32 *end, + for (poff = start; poff < end; poff++) { + u8 *ptr = (u8 *)poff + *poff; + ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++ ptr += ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR; ++ if (ptr < (u8 *)_text || (u8 *)_einittext <= ptr) ++ ptr -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR; ++#endif ++ + if (!*poff || ptr < text || ptr >= text_end) + continue; + /* turn DS segment override prefix into lock prefix */ +- if (*ptr == 0x3e) ++ if (*ktla_ktva(ptr) == 0x3e) + text_poke(ptr, ((unsigned char []){0xf0}), 1); + }; + mutex_unlock(&text_mutex); +@@ -328,10 +341,16 @@ static void alternatives_smp_unlock(const s32 *start, const s32 *end, + for (poff = start; poff < end; poff++) { + u8 *ptr = (u8 *)poff + *poff; + ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++ ptr += ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR; ++ if (ptr < (u8 *)_text || (u8 *)_einittext <= ptr) ++ ptr -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR; ++#endif ++ + if (!*poff || ptr < text || ptr >= text_end) + continue; + /* turn lock prefix into DS segment override prefix */ +- if (*ptr == 0xf0) ++ if (*ktla_ktva(ptr) == 0xf0) + text_poke(ptr, ((unsigned char []){0x3E}), 1); + }; + mutex_unlock(&text_mutex); +@@ -500,7 +519,7 @@ void __init_or_module apply_paravirt(struct paravirt_patch_site *start, + + BUG_ON(p->len > MAX_PATCH_LEN); + /* prep the buffer with the original instructions */ +- memcpy(insnbuf, p->instr, p->len); ++ memcpy(insnbuf, ktla_ktva(p->instr), p->len); + used = pv_init_ops.patch(p->instrtype, p->clobbers, insnbuf, + (unsigned long)p->instr, p->len); + +@@ -568,7 +587,7 @@ void __init alternative_instructions(void) + if (smp_alt_once) + free_init_pages("SMP alternatives", + (unsigned long)__smp_locks, +- (unsigned long)__smp_locks_end); ++ PAGE_ALIGN((unsigned long)__smp_locks_end)); + + restart_nmi(); + } +@@ -585,13 +604,17 @@ void __init alternative_instructions(void) + * instructions. And on the local CPU you need to be protected again NMI or MCE + * handlers seeing an inconsistent instruction while you patch. + */ +-void *__init_or_module text_poke_early(void *addr, const void *opcode, ++void *__kprobes text_poke_early(void *addr, const void *opcode, + size_t len) + { + unsigned long flags; + local_irq_save(flags); +- memcpy(addr, opcode, len); ++ ++ pax_open_kernel(); ++ memcpy(ktla_ktva(addr), opcode, len); + sync_core(); ++ pax_close_kernel(); ++ + local_irq_restore(flags); + /* Could also do a CLFLUSH here to speed up CPU recovery; but + that causes hangs on some VIA CPUs. */ +@@ -613,36 +636,22 @@ void *__init_or_module text_poke_early(void *addr, const void *opcode, + */ + void *__kprobes text_poke(void *addr, const void *opcode, size_t len) + { +- unsigned long flags; +- char *vaddr; ++ unsigned char *vaddr = ktla_ktva(addr); + struct page *pages[2]; +- int i; ++ size_t i; + + if (!core_kernel_text((unsigned long)addr)) { +- pages[0] = vmalloc_to_page(addr); +- pages[1] = vmalloc_to_page(addr + PAGE_SIZE); ++ pages[0] = vmalloc_to_page(vaddr); ++ pages[1] = vmalloc_to_page(vaddr + PAGE_SIZE); + } else { +- pages[0] = virt_to_page(addr); ++ pages[0] = virt_to_page(vaddr); + WARN_ON(!PageReserved(pages[0])); +- pages[1] = virt_to_page(addr + PAGE_SIZE); ++ pages[1] = virt_to_page(vaddr + PAGE_SIZE); + } + BUG_ON(!pages[0]); +- local_irq_save(flags); +- set_fixmap(FIX_TEXT_POKE0, page_to_phys(pages[0])); +- if (pages[1]) +- set_fixmap(FIX_TEXT_POKE1, page_to_phys(pages[1])); +- vaddr = (char *)fix_to_virt(FIX_TEXT_POKE0); +- memcpy(&vaddr[(unsigned long)addr & ~PAGE_MASK], opcode, len); +- clear_fixmap(FIX_TEXT_POKE0); +- if (pages[1]) +- clear_fixmap(FIX_TEXT_POKE1); +- local_flush_tlb(); +- sync_core(); +- /* Could also do a CLFLUSH here to speed up CPU recovery; but +- that causes hangs on some VIA CPUs. */ ++ text_poke_early(addr, opcode, len); + for (i = 0; i < len; i++) +- BUG_ON(((char *)addr)[i] != ((char *)opcode)[i]); +- local_irq_restore(flags); ++ BUG_ON((vaddr)[i] != ((const unsigned char *)opcode)[i]); + return addr; + } + +diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c +index edc2448..553e7c5 100644 +--- a/arch/x86/kernel/apic/apic.c ++++ b/arch/x86/kernel/apic/apic.c +@@ -184,7 +184,7 @@ int first_system_vector = 0xfe; + /* + * Debug level, exported for io_apic.c + */ +-unsigned int apic_verbosity; ++int apic_verbosity; + + int pic_mode; + +@@ -1917,7 +1917,7 @@ void smp_error_interrupt(struct pt_regs *regs) + apic_write(APIC_ESR, 0); + v1 = apic_read(APIC_ESR); + ack_APIC_irq(); +- atomic_inc(&irq_err_count); ++ atomic_inc_unchecked(&irq_err_count); + + apic_printk(APIC_DEBUG, KERN_DEBUG "APIC error on CPU%d: %02x(%02x)", + smp_processor_id(), v0 , v1); +diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c +index e88300d..cd5a87a 100644 +--- a/arch/x86/kernel/apic/io_apic.c ++++ b/arch/x86/kernel/apic/io_apic.c +@@ -83,7 +83,9 @@ static struct io_apic_ops io_apic_ops = { + + void __init set_io_apic_ops(const struct io_apic_ops *ops) + { +- io_apic_ops = *ops; ++ pax_open_kernel(); ++ memcpy((void*)&io_apic_ops, ops, sizeof io_apic_ops); ++ pax_close_kernel(); + } + + /* +@@ -1135,7 +1137,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin, + } + EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector); + +-void lock_vector_lock(void) ++void lock_vector_lock(void) __acquires(vector_lock) + { + /* Used to the online set of cpus does not change + * during assign_irq_vector. +@@ -1143,7 +1145,7 @@ void lock_vector_lock(void) + raw_spin_lock(&vector_lock); + } + +-void unlock_vector_lock(void) ++void unlock_vector_lock(void) __releases(vector_lock) + { + raw_spin_unlock(&vector_lock); + } +@@ -2549,7 +2551,7 @@ static void ack_apic_edge(struct irq_data *data) + ack_APIC_irq(); + } + +-atomic_t irq_mis_count; ++atomic_unchecked_t irq_mis_count; + + #ifdef CONFIG_GENERIC_PENDING_IRQ + static inline bool ioapic_irqd_mask(struct irq_data *data, struct irq_cfg *cfg) +@@ -2667,7 +2669,7 @@ static void ack_apic_level(struct irq_data *data) + * at the cpu. + */ + if (!(v & (1 << (i & 0x1f)))) { +- atomic_inc(&irq_mis_count); ++ atomic_inc_unchecked(&irq_mis_count); + + eoi_ioapic_irq(irq, cfg); + } +diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c +index 459e78c..f037006 100644 +--- a/arch/x86/kernel/apm_32.c ++++ b/arch/x86/kernel/apm_32.c +@@ -410,7 +410,7 @@ static DEFINE_MUTEX(apm_mutex); + * This is for buggy BIOS's that refer to (real mode) segment 0x40 + * even though they are called in protected mode. + */ +-static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092, ++static const struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4093, + (unsigned long)__va(0x400UL), PAGE_SIZE - 0x400 - 1); + + static const char driver_version[] = "1.16ac"; /* no spaces */ +@@ -588,7 +588,10 @@ static long __apm_bios_call(void *_call) + BUG_ON(cpu != 0); + gdt = get_cpu_gdt_table(cpu); + save_desc_40 = gdt[0x40 / 8]; ++ ++ pax_open_kernel(); + gdt[0x40 / 8] = bad_bios_desc; ++ pax_close_kernel(); + + apm_irq_save(flags); + APM_DO_SAVE_SEGS; +@@ -597,7 +600,11 @@ static long __apm_bios_call(void *_call) + &call->esi); + APM_DO_RESTORE_SEGS; + apm_irq_restore(flags); ++ ++ pax_open_kernel(); + gdt[0x40 / 8] = save_desc_40; ++ pax_close_kernel(); ++ + put_cpu(); + + return call->eax & 0xff; +@@ -664,7 +671,10 @@ static long __apm_bios_call_simple(void *_call) + BUG_ON(cpu != 0); + gdt = get_cpu_gdt_table(cpu); + save_desc_40 = gdt[0x40 / 8]; ++ ++ pax_open_kernel(); + gdt[0x40 / 8] = bad_bios_desc; ++ pax_close_kernel(); + + apm_irq_save(flags); + APM_DO_SAVE_SEGS; +@@ -672,7 +682,11 @@ static long __apm_bios_call_simple(void *_call) + &call->eax); + APM_DO_RESTORE_SEGS; + apm_irq_restore(flags); ++ ++ pax_open_kernel(); + gdt[0x40 / 8] = save_desc_40; ++ pax_close_kernel(); ++ + put_cpu(); + return error; + } +@@ -2345,12 +2359,15 @@ static int __init apm_init(void) + * code to that CPU. + */ + gdt = get_cpu_gdt_table(0); ++ ++ pax_open_kernel(); + set_desc_base(&gdt[APM_CS >> 3], + (unsigned long)__va((unsigned long)apm_info.bios.cseg << 4)); + set_desc_base(&gdt[APM_CS_16 >> 3], + (unsigned long)__va((unsigned long)apm_info.bios.cseg_16 << 4)); + set_desc_base(&gdt[APM_DS >> 3], + (unsigned long)__va((unsigned long)apm_info.bios.dseg << 4)); ++ pax_close_kernel(); + + proc_create("apm", 0, NULL, &apm_file_ops); + +diff --git a/arch/x86/kernel/asm-offsets.c b/arch/x86/kernel/asm-offsets.c +index 68de2dc..1f3c720 100644 +--- a/arch/x86/kernel/asm-offsets.c ++++ b/arch/x86/kernel/asm-offsets.c +@@ -33,6 +33,8 @@ void common(void) { + OFFSET(TI_status, thread_info, status); + OFFSET(TI_addr_limit, thread_info, addr_limit); + OFFSET(TI_preempt_count, thread_info, preempt_count); ++ OFFSET(TI_lowest_stack, thread_info, lowest_stack); ++ DEFINE(TI_task_thread_sp0, offsetof(struct task_struct, thread.sp0) - offsetof(struct task_struct, tinfo)); + + BLANK(); + OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx); +@@ -53,8 +55,26 @@ void common(void) { + OFFSET(PV_CPU_irq_enable_sysexit, pv_cpu_ops, irq_enable_sysexit); + OFFSET(PV_CPU_read_cr0, pv_cpu_ops, read_cr0); + OFFSET(PV_MMU_read_cr2, pv_mmu_ops, read_cr2); ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ OFFSET(PV_CPU_write_cr0, pv_cpu_ops, write_cr0); + #endif + ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ OFFSET(PV_MMU_read_cr3, pv_mmu_ops, read_cr3); ++ OFFSET(PV_MMU_write_cr3, pv_mmu_ops, write_cr3); ++#ifdef CONFIG_X86_64 ++ OFFSET(PV_MMU_set_pgd_batched, pv_mmu_ops, set_pgd_batched); ++#endif ++#endif ++ ++#endif ++ ++ BLANK(); ++ DEFINE(PAGE_SIZE_asm, PAGE_SIZE); ++ DEFINE(PAGE_SHIFT_asm, PAGE_SHIFT); ++ DEFINE(THREAD_SIZE_asm, THREAD_SIZE); ++ + #ifdef CONFIG_XEN + BLANK(); + OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask); +diff --git a/arch/x86/kernel/asm-offsets_64.c b/arch/x86/kernel/asm-offsets_64.c +index 1b4754f..fbb4227 100644 +--- a/arch/x86/kernel/asm-offsets_64.c ++++ b/arch/x86/kernel/asm-offsets_64.c +@@ -76,6 +76,7 @@ int main(void) + BLANK(); + #undef ENTRY + ++ DEFINE(TSS_size, sizeof(struct tss_struct)); + OFFSET(TSS_ist, tss_struct, x86_tss.ist); + BLANK(); + +diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile +index 6ab6aa2..8f71507 100644 +--- a/arch/x86/kernel/cpu/Makefile ++++ b/arch/x86/kernel/cpu/Makefile +@@ -8,10 +8,6 @@ CFLAGS_REMOVE_common.o = -pg + CFLAGS_REMOVE_perf_event.o = -pg + endif + +-# Make sure load_percpu_segment has no stackprotector +-nostackp := $(call cc-option, -fno-stack-protector) +-CFLAGS_common.o := $(nostackp) +- + obj-y := intel_cacheinfo.o scattered.o topology.o + obj-y += proc.o capflags.o powerflags.o common.o + obj-y += vmware.o hypervisor.o sched.o mshyperv.o +diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c +index 146bb62..ac9c74a 100644 +--- a/arch/x86/kernel/cpu/amd.c ++++ b/arch/x86/kernel/cpu/amd.c +@@ -691,7 +691,7 @@ static unsigned int __cpuinit amd_size_cache(struct cpuinfo_x86 *c, + unsigned int size) + { + /* AMD errata T13 (order #21922) */ +- if ((c->x86 == 6)) { ++ if (c->x86 == 6) { + /* Duron Rev A0 */ + if (c->x86_model == 3 && c->x86_mask == 0) + size = 64; +diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c +index cf79302..b1b28ae 100644 +--- a/arch/x86/kernel/cpu/common.c ++++ b/arch/x86/kernel/cpu/common.c +@@ -86,60 +86,6 @@ static const struct cpu_dev __cpuinitconst default_cpu = { + + static const struct cpu_dev *this_cpu __cpuinitdata = &default_cpu; + +-DEFINE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page) = { .gdt = { +-#ifdef CONFIG_X86_64 +- /* +- * We need valid kernel segments for data and code in long mode too +- * IRET will check the segment types kkeil 2000/10/28 +- * Also sysret mandates a special GDT layout +- * +- * TLS descriptors are currently at a different place compared to i386. +- * Hopefully nobody expects them at a fixed place (Wine?) +- */ +- [GDT_ENTRY_KERNEL32_CS] = GDT_ENTRY_INIT(0xc09b, 0, 0xfffff), +- [GDT_ENTRY_KERNEL_CS] = GDT_ENTRY_INIT(0xa09b, 0, 0xfffff), +- [GDT_ENTRY_KERNEL_DS] = GDT_ENTRY_INIT(0xc093, 0, 0xfffff), +- [GDT_ENTRY_DEFAULT_USER32_CS] = GDT_ENTRY_INIT(0xc0fb, 0, 0xfffff), +- [GDT_ENTRY_DEFAULT_USER_DS] = GDT_ENTRY_INIT(0xc0f3, 0, 0xfffff), +- [GDT_ENTRY_DEFAULT_USER_CS] = GDT_ENTRY_INIT(0xa0fb, 0, 0xfffff), +-#else +- [GDT_ENTRY_KERNEL_CS] = GDT_ENTRY_INIT(0xc09a, 0, 0xfffff), +- [GDT_ENTRY_KERNEL_DS] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff), +- [GDT_ENTRY_DEFAULT_USER_CS] = GDT_ENTRY_INIT(0xc0fa, 0, 0xfffff), +- [GDT_ENTRY_DEFAULT_USER_DS] = GDT_ENTRY_INIT(0xc0f2, 0, 0xfffff), +- /* +- * Segments used for calling PnP BIOS have byte granularity. +- * They code segments and data segments have fixed 64k limits, +- * the transfer segment sizes are set at run time. +- */ +- /* 32-bit code */ +- [GDT_ENTRY_PNPBIOS_CS32] = GDT_ENTRY_INIT(0x409a, 0, 0xffff), +- /* 16-bit code */ +- [GDT_ENTRY_PNPBIOS_CS16] = GDT_ENTRY_INIT(0x009a, 0, 0xffff), +- /* 16-bit data */ +- [GDT_ENTRY_PNPBIOS_DS] = GDT_ENTRY_INIT(0x0092, 0, 0xffff), +- /* 16-bit data */ +- [GDT_ENTRY_PNPBIOS_TS1] = GDT_ENTRY_INIT(0x0092, 0, 0), +- /* 16-bit data */ +- [GDT_ENTRY_PNPBIOS_TS2] = GDT_ENTRY_INIT(0x0092, 0, 0), +- /* +- * The APM segments have byte granularity and their bases +- * are set at run time. All have 64k limits. +- */ +- /* 32-bit code */ +- [GDT_ENTRY_APMBIOS_BASE] = GDT_ENTRY_INIT(0x409a, 0, 0xffff), +- /* 16-bit code */ +- [GDT_ENTRY_APMBIOS_BASE+1] = GDT_ENTRY_INIT(0x009a, 0, 0xffff), +- /* data */ +- [GDT_ENTRY_APMBIOS_BASE+2] = GDT_ENTRY_INIT(0x4092, 0, 0xffff), +- +- [GDT_ENTRY_ESPFIX_SS] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff), +- [GDT_ENTRY_PERCPU] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff), +- GDT_STACK_CANARY_INIT +-#endif +-} }; +-EXPORT_PER_CPU_SYMBOL_GPL(gdt_page); +- + static int __init x86_xsave_setup(char *s) + { + setup_clear_cpu_cap(X86_FEATURE_XSAVE); +@@ -374,7 +320,7 @@ void switch_to_new_gdt(int cpu) + { + struct desc_ptr gdt_descr; + +- gdt_descr.address = (long)get_cpu_gdt_table(cpu); ++ gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu); + gdt_descr.size = GDT_SIZE - 1; + load_gdt(&gdt_descr); + /* Reload the per-cpu base */ +@@ -841,6 +787,10 @@ static void __cpuinit identify_cpu(struct cpuinfo_x86 *c) + /* Filter out anything that depends on CPUID levels we don't have */ + filter_cpuid_features(c, true); + ++#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_SEGMEXEC) || defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)) ++ setup_clear_cpu_cap(X86_FEATURE_SEP); ++#endif ++ + /* If the model name is still unset, do table lookup. */ + if (!c->x86_model_id[0]) { + const char *p; +@@ -1021,10 +971,12 @@ static __init int setup_disablecpuid(char *arg) + } + __setup("clearcpuid=", setup_disablecpuid); + ++DEFINE_PER_CPU(struct thread_info *, current_tinfo) = &init_task.tinfo; ++EXPORT_PER_CPU_SYMBOL(current_tinfo); ++ + #ifdef CONFIG_X86_64 + struct desc_ptr idt_descr = { NR_VECTORS * 16 - 1, (unsigned long) idt_table }; +-struct desc_ptr nmi_idt_descr = { NR_VECTORS * 16 - 1, +- (unsigned long) nmi_idt_table }; ++struct desc_ptr nmi_idt_descr = { NR_VECTORS * 16 - 1, (unsigned long) nmi_idt_table }; + + DEFINE_PER_CPU_FIRST(union irq_stack_union, + irq_stack_union) __aligned(PAGE_SIZE); +@@ -1038,7 +990,7 @@ DEFINE_PER_CPU(struct task_struct *, current_task) ____cacheline_aligned = + EXPORT_PER_CPU_SYMBOL(current_task); + + DEFINE_PER_CPU(unsigned long, kernel_stack) = +- (unsigned long)&init_thread_union - KERNEL_STACK_OFFSET + THREAD_SIZE; ++ (unsigned long)&init_thread_union - 16 + THREAD_SIZE; + EXPORT_PER_CPU_SYMBOL(kernel_stack); + + DEFINE_PER_CPU(char *, irq_stack_ptr) = +@@ -1126,7 +1078,7 @@ struct pt_regs * __cpuinit idle_regs(struct pt_regs *regs) + { + memset(regs, 0, sizeof(struct pt_regs)); + regs->fs = __KERNEL_PERCPU; +- regs->gs = __KERNEL_STACK_CANARY; ++ savesegment(gs, regs->gs); + + return regs; + } +@@ -1181,7 +1133,7 @@ void __cpuinit cpu_init(void) + int i; + + cpu = stack_smp_processor_id(); +- t = &per_cpu(init_tss, cpu); ++ t = init_tss + cpu; + oist = &per_cpu(orig_ist, cpu); + + #ifdef CONFIG_NUMA +@@ -1207,7 +1159,7 @@ void __cpuinit cpu_init(void) + switch_to_new_gdt(cpu); + loadsegment(fs, 0); + +- load_idt((const struct desc_ptr *)&idt_descr); ++ load_idt(&idt_descr); + + memset(me->thread.tls_array, 0, GDT_ENTRY_TLS_ENTRIES * 8); + syscall_init(); +@@ -1216,7 +1168,6 @@ void __cpuinit cpu_init(void) + wrmsrl(MSR_KERNEL_GS_BASE, 0); + barrier(); + +- x86_configure_nx(); + if (cpu != 0) + enable_x2apic(); + +@@ -1272,7 +1223,7 @@ void __cpuinit cpu_init(void) + { + int cpu = smp_processor_id(); + struct task_struct *curr = current; +- struct tss_struct *t = &per_cpu(init_tss, cpu); ++ struct tss_struct *t = init_tss + cpu; + struct thread_struct *thread = &curr->thread; + + if (cpumask_test_and_set_cpu(cpu, cpu_initialized_mask)) { +diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c +index 3e6ff6c..54b4992 100644 +--- a/arch/x86/kernel/cpu/intel.c ++++ b/arch/x86/kernel/cpu/intel.c +@@ -174,7 +174,7 @@ static void __cpuinit trap_init_f00f_bug(void) + * Update the IDT descriptor and reload the IDT so that + * it uses the read-only mapped virtual address. + */ +- idt_descr.address = fix_to_virt(FIX_F00F_IDT); ++ idt_descr.address = (struct desc_struct *)fix_to_virt(FIX_F00F_IDT); + load_idt(&idt_descr); + } + #endif +diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c +index 61604ae..98250a5 100644 +--- a/arch/x86/kernel/cpu/mcheck/mce.c ++++ b/arch/x86/kernel/cpu/mcheck/mce.c +@@ -42,6 +42,7 @@ + #include <asm/processor.h> + #include <asm/mce.h> + #include <asm/msr.h> ++#include <asm/local.h> + + #include "mce-internal.h" + +@@ -250,7 +251,7 @@ static void print_mce(struct mce *m) + !(m->mcgstatus & MCG_STATUS_EIPV) ? " !INEXACT!" : "", + m->cs, m->ip); + +- if (m->cs == __KERNEL_CS) ++ if (m->cs == __KERNEL_CS || m->cs == __KERNEXEC_KERNEL_CS) + print_symbol("{%s}", m->ip); + pr_cont("\n"); + } +@@ -283,10 +284,10 @@ static void print_mce(struct mce *m) + + #define PANIC_TIMEOUT 5 /* 5 seconds */ + +-static atomic_t mce_paniced; ++static atomic_unchecked_t mce_paniced; + + static int fake_panic; +-static atomic_t mce_fake_paniced; ++static atomic_unchecked_t mce_fake_paniced; + + /* Panic in progress. Enable interrupts and wait for final IPI */ + static void wait_for_panic(void) +@@ -310,7 +311,7 @@ static void mce_panic(char *msg, struct mce *final, char *exp) + /* + * Make sure only one CPU runs in machine check panic + */ +- if (atomic_inc_return(&mce_paniced) > 1) ++ if (atomic_inc_return_unchecked(&mce_paniced) > 1) + wait_for_panic(); + barrier(); + +@@ -318,7 +319,7 @@ static void mce_panic(char *msg, struct mce *final, char *exp) + console_verbose(); + } else { + /* Don't log too much for fake panic */ +- if (atomic_inc_return(&mce_fake_paniced) > 1) ++ if (atomic_inc_return_unchecked(&mce_fake_paniced) > 1) + return; + } + /* First print corrected ones that are still unlogged */ +@@ -684,7 +685,7 @@ static int mce_timed_out(u64 *t) + * might have been modified by someone else. + */ + rmb(); +- if (atomic_read(&mce_paniced)) ++ if (atomic_read_unchecked(&mce_paniced)) + wait_for_panic(); + if (!monarch_timeout) + goto out; +@@ -1535,7 +1536,7 @@ static void unexpected_machine_check(struct pt_regs *regs, long error_code) + } + + /* Call the installed machine check handler for this CPU setup. */ +-void (*machine_check_vector)(struct pt_regs *, long error_code) = ++void (*machine_check_vector)(struct pt_regs *, long error_code) __read_only = + unexpected_machine_check; + + /* +@@ -1558,7 +1559,9 @@ void __cpuinit mcheck_cpu_init(struct cpuinfo_x86 *c) + return; + } + ++ pax_open_kernel(); + machine_check_vector = do_machine_check; ++ pax_close_kernel(); + + __mcheck_cpu_init_generic(); + __mcheck_cpu_init_vendor(c); +@@ -1572,7 +1575,7 @@ void __cpuinit mcheck_cpu_init(struct cpuinfo_x86 *c) + */ + + static DEFINE_SPINLOCK(mce_chrdev_state_lock); +-static int mce_chrdev_open_count; /* #times opened */ ++static local_t mce_chrdev_open_count; /* #times opened */ + static int mce_chrdev_open_exclu; /* already open exclusive? */ + + static int mce_chrdev_open(struct inode *inode, struct file *file) +@@ -1580,7 +1583,7 @@ static int mce_chrdev_open(struct inode *inode, struct file *file) + spin_lock(&mce_chrdev_state_lock); + + if (mce_chrdev_open_exclu || +- (mce_chrdev_open_count && (file->f_flags & O_EXCL))) { ++ (local_read(&mce_chrdev_open_count) && (file->f_flags & O_EXCL))) { + spin_unlock(&mce_chrdev_state_lock); + + return -EBUSY; +@@ -1588,7 +1591,7 @@ static int mce_chrdev_open(struct inode *inode, struct file *file) + + if (file->f_flags & O_EXCL) + mce_chrdev_open_exclu = 1; +- mce_chrdev_open_count++; ++ local_inc(&mce_chrdev_open_count); + + spin_unlock(&mce_chrdev_state_lock); + +@@ -1599,7 +1602,7 @@ static int mce_chrdev_release(struct inode *inode, struct file *file) + { + spin_lock(&mce_chrdev_state_lock); + +- mce_chrdev_open_count--; ++ local_dec(&mce_chrdev_open_count); + mce_chrdev_open_exclu = 0; + + spin_unlock(&mce_chrdev_state_lock); +@@ -2324,7 +2327,7 @@ struct dentry *mce_get_debugfs_dir(void) + static void mce_reset(void) + { + cpu_missing = 0; +- atomic_set(&mce_fake_paniced, 0); ++ atomic_set_unchecked(&mce_fake_paniced, 0); + atomic_set(&mce_executing, 0); + atomic_set(&mce_callin, 0); + atomic_set(&global_nwo, 0); +diff --git a/arch/x86/kernel/cpu/mcheck/p5.c b/arch/x86/kernel/cpu/mcheck/p5.c +index 2d5454c..51987eb 100644 +--- a/arch/x86/kernel/cpu/mcheck/p5.c ++++ b/arch/x86/kernel/cpu/mcheck/p5.c +@@ -11,6 +11,7 @@ + #include <asm/processor.h> + #include <asm/mce.h> + #include <asm/msr.h> ++#include <asm/pgtable.h> + + /* By default disabled */ + int mce_p5_enabled __read_mostly; +@@ -49,7 +50,9 @@ void intel_p5_mcheck_init(struct cpuinfo_x86 *c) + if (!cpu_has(c, X86_FEATURE_MCE)) + return; + ++ pax_open_kernel(); + machine_check_vector = pentium_machine_check; ++ pax_close_kernel(); + /* Make sure the vector pointer is visible before we enable MCEs: */ + wmb(); + +diff --git a/arch/x86/kernel/cpu/mcheck/winchip.c b/arch/x86/kernel/cpu/mcheck/winchip.c +index 2d7998f..17c9de1 100644 +--- a/arch/x86/kernel/cpu/mcheck/winchip.c ++++ b/arch/x86/kernel/cpu/mcheck/winchip.c +@@ -10,6 +10,7 @@ + #include <asm/processor.h> + #include <asm/mce.h> + #include <asm/msr.h> ++#include <asm/pgtable.h> + + /* Machine check handler for WinChip C6: */ + static void winchip_machine_check(struct pt_regs *regs, long error_code) +@@ -23,7 +24,9 @@ void winchip_mcheck_init(struct cpuinfo_x86 *c) + { + u32 lo, hi; + ++ pax_open_kernel(); + machine_check_vector = winchip_machine_check; ++ pax_close_kernel(); + /* Make sure the vector pointer is visible before we enable MCEs: */ + wmb(); + +diff --git a/arch/x86/kernel/cpu/mtrr/main.c b/arch/x86/kernel/cpu/mtrr/main.c +index 6b96110..0da73eb 100644 +--- a/arch/x86/kernel/cpu/mtrr/main.c ++++ b/arch/x86/kernel/cpu/mtrr/main.c +@@ -62,7 +62,7 @@ static DEFINE_MUTEX(mtrr_mutex); + u64 size_or_mask, size_and_mask; + static bool mtrr_aps_delayed_init; + +-static const struct mtrr_ops *mtrr_ops[X86_VENDOR_NUM]; ++static const struct mtrr_ops *mtrr_ops[X86_VENDOR_NUM] __read_only; + + const struct mtrr_ops *mtrr_if; + +diff --git a/arch/x86/kernel/cpu/mtrr/mtrr.h b/arch/x86/kernel/cpu/mtrr/mtrr.h +index df5e41f..816c719 100644 +--- a/arch/x86/kernel/cpu/mtrr/mtrr.h ++++ b/arch/x86/kernel/cpu/mtrr/mtrr.h +@@ -25,7 +25,7 @@ struct mtrr_ops { + int (*validate_add_page)(unsigned long base, unsigned long size, + unsigned int type); + int (*have_wrcomb)(void); +-}; ++} __do_const; + + extern int generic_get_free_region(unsigned long base, unsigned long size, + int replace_reg); +diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c +index bb8e034..fb9020b 100644 +--- a/arch/x86/kernel/cpu/perf_event.c ++++ b/arch/x86/kernel/cpu/perf_event.c +@@ -1835,7 +1835,7 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) + break; + + perf_callchain_store(entry, frame.return_address); +- fp = frame.next_frame; ++ fp = (const void __force_user *)frame.next_frame; + } + } + +diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c +index 13ad899..f642b9a 100644 +--- a/arch/x86/kernel/crash.c ++++ b/arch/x86/kernel/crash.c +@@ -36,10 +36,8 @@ static void kdump_nmi_callback(int cpu, struct pt_regs *regs) + { + #ifdef CONFIG_X86_32 + struct pt_regs fixed_regs; +-#endif + +-#ifdef CONFIG_X86_32 +- if (!user_mode_vm(regs)) { ++ if (!user_mode(regs)) { + crash_fixup_ss_esp(&fixed_regs, regs); + regs = &fixed_regs; + } +diff --git a/arch/x86/kernel/doublefault_32.c b/arch/x86/kernel/doublefault_32.c +index 37250fe..bf2ec74 100644 +--- a/arch/x86/kernel/doublefault_32.c ++++ b/arch/x86/kernel/doublefault_32.c +@@ -11,7 +11,7 @@ + + #define DOUBLEFAULT_STACKSIZE (1024) + static unsigned long doublefault_stack[DOUBLEFAULT_STACKSIZE]; +-#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE) ++#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE-2) + + #define ptr_ok(x) ((x) > PAGE_OFFSET && (x) < PAGE_OFFSET + MAXMEM) + +@@ -21,7 +21,7 @@ static void doublefault_fn(void) + unsigned long gdt, tss; + + store_gdt(&gdt_desc); +- gdt = gdt_desc.address; ++ gdt = (unsigned long)gdt_desc.address; + + printk(KERN_EMERG "PANIC: double fault, gdt at %08lx [%d bytes]\n", gdt, gdt_desc.size); + +@@ -58,10 +58,10 @@ struct tss_struct doublefault_tss __cacheline_aligned = { + /* 0x2 bit is always set */ + .flags = X86_EFLAGS_SF | 0x2, + .sp = STACK_START, +- .es = __USER_DS, ++ .es = __KERNEL_DS, + .cs = __KERNEL_CS, + .ss = __KERNEL_DS, +- .ds = __USER_DS, ++ .ds = __KERNEL_DS, + .fs = __KERNEL_PERCPU, + + .__cr3 = __pa_nodebug(swapper_pg_dir), +diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c +index 1b81839..0b4e7b0 100644 +--- a/arch/x86/kernel/dumpstack.c ++++ b/arch/x86/kernel/dumpstack.c +@@ -2,6 +2,9 @@ + * Copyright (C) 1991, 1992 Linus Torvalds + * Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs + */ ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++#define __INCLUDED_BY_HIDESYM 1 ++#endif + #include <linux/kallsyms.h> + #include <linux/kprobes.h> + #include <linux/uaccess.h> +@@ -35,16 +38,14 @@ void printk_address(unsigned long address, int reliable) + static void + print_ftrace_graph_addr(unsigned long addr, void *data, + const struct stacktrace_ops *ops, +- struct thread_info *tinfo, int *graph) ++ struct task_struct *task, int *graph) + { +- struct task_struct *task; + unsigned long ret_addr; + int index; + + if (addr != (unsigned long)return_to_handler) + return; + +- task = tinfo->task; + index = task->curr_ret_stack; + + if (!task->ret_stack || index < *graph) +@@ -61,7 +62,7 @@ print_ftrace_graph_addr(unsigned long addr, void *data, + static inline void + print_ftrace_graph_addr(unsigned long addr, void *data, + const struct stacktrace_ops *ops, +- struct thread_info *tinfo, int *graph) ++ struct task_struct *task, int *graph) + { } + #endif + +@@ -72,10 +73,8 @@ print_ftrace_graph_addr(unsigned long addr, void *data, + * severe exception (double fault, nmi, stack fault, debug, mce) hardware stack + */ + +-static inline int valid_stack_ptr(struct thread_info *tinfo, +- void *p, unsigned int size, void *end) ++static inline int valid_stack_ptr(void *t, void *p, unsigned int size, void *end) + { +- void *t = tinfo; + if (end) { + if (p < end && p >= (end-THREAD_SIZE)) + return 1; +@@ -86,14 +85,14 @@ static inline int valid_stack_ptr(struct thread_info *tinfo, + } + + unsigned long +-print_context_stack(struct thread_info *tinfo, ++print_context_stack(struct task_struct *task, void *stack_start, + unsigned long *stack, unsigned long bp, + const struct stacktrace_ops *ops, void *data, + unsigned long *end, int *graph) + { + struct stack_frame *frame = (struct stack_frame *)bp; + +- while (valid_stack_ptr(tinfo, stack, sizeof(*stack), end)) { ++ while (valid_stack_ptr(stack_start, stack, sizeof(*stack), end)) { + unsigned long addr; + + addr = *stack; +@@ -105,7 +104,7 @@ print_context_stack(struct thread_info *tinfo, + } else { + ops->address(data, addr, 0); + } +- print_ftrace_graph_addr(addr, data, ops, tinfo, graph); ++ print_ftrace_graph_addr(addr, data, ops, task, graph); + } + stack++; + } +@@ -114,7 +113,7 @@ print_context_stack(struct thread_info *tinfo, + EXPORT_SYMBOL_GPL(print_context_stack); + + unsigned long +-print_context_stack_bp(struct thread_info *tinfo, ++print_context_stack_bp(struct task_struct *task, void *stack_start, + unsigned long *stack, unsigned long bp, + const struct stacktrace_ops *ops, void *data, + unsigned long *end, int *graph) +@@ -122,7 +121,7 @@ print_context_stack_bp(struct thread_info *tinfo, + struct stack_frame *frame = (struct stack_frame *)bp; + unsigned long *ret_addr = &frame->return_address; + +- while (valid_stack_ptr(tinfo, ret_addr, sizeof(*ret_addr), end)) { ++ while (valid_stack_ptr(stack_start, ret_addr, sizeof(*ret_addr), end)) { + unsigned long addr = *ret_addr; + + if (!__kernel_text_address(addr)) +@@ -131,7 +130,7 @@ print_context_stack_bp(struct thread_info *tinfo, + ops->address(data, addr, 1); + frame = frame->next_frame; + ret_addr = &frame->return_address; +- print_ftrace_graph_addr(addr, data, ops, tinfo, graph); ++ print_ftrace_graph_addr(addr, data, ops, task, graph); + } + + return (unsigned long)frame; +@@ -189,7 +188,7 @@ void dump_stack(void) + + bp = stack_frame(current, NULL); + printk("Pid: %d, comm: %.20s %s %s %.*s\n", +- current->pid, current->comm, print_tainted(), ++ task_pid_nr(current), current->comm, print_tainted(), + init_utsname()->release, + (int)strcspn(init_utsname()->version, " "), + init_utsname()->version); +@@ -225,6 +224,8 @@ unsigned __kprobes long oops_begin(void) + } + EXPORT_SYMBOL_GPL(oops_begin); + ++extern void gr_handle_kernel_exploit(void); ++ + void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, int signr) + { + if (regs && kexec_should_crash(current)) +@@ -246,7 +247,10 @@ void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, int signr) + panic("Fatal exception in interrupt"); + if (panic_on_oops) + panic("Fatal exception"); +- do_exit(signr); ++ ++ gr_handle_kernel_exploit(); ++ ++ do_group_exit(signr); + } + + int __kprobes __die(const char *str, struct pt_regs *regs, long err) +@@ -273,7 +277,7 @@ int __kprobes __die(const char *str, struct pt_regs *regs, long err) + + show_registers(regs); + #ifdef CONFIG_X86_32 +- if (user_mode_vm(regs)) { ++ if (user_mode(regs)) { + sp = regs->sp; + ss = regs->ss & 0xffff; + } else { +@@ -301,7 +305,7 @@ void die(const char *str, struct pt_regs *regs, long err) + unsigned long flags = oops_begin(); + int sig = SIGSEGV; + +- if (!user_mode_vm(regs)) ++ if (!user_mode(regs)) + report_bug(regs->ip, regs); + + if (__die(str, regs, err)) +diff --git a/arch/x86/kernel/dumpstack_32.c b/arch/x86/kernel/dumpstack_32.c +index 88ec912..e95e935 100644 +--- a/arch/x86/kernel/dumpstack_32.c ++++ b/arch/x86/kernel/dumpstack_32.c +@@ -38,15 +38,13 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, + bp = stack_frame(task, regs); + + for (;;) { +- struct thread_info *context; ++ void *stack_start = (void *)((unsigned long)stack & ~(THREAD_SIZE-1)); + +- context = (struct thread_info *) +- ((unsigned long)stack & (~(THREAD_SIZE - 1))); +- bp = ops->walk_stack(context, stack, bp, ops, data, NULL, &graph); ++ bp = ops->walk_stack(task, stack_start, stack, bp, ops, data, NULL, &graph); + +- stack = (unsigned long *)context->previous_esp; +- if (!stack) ++ if (stack_start == task_stack_page(task)) + break; ++ stack = *(unsigned long **)stack_start; + if (ops->stack(data, "IRQ") < 0) + break; + touch_nmi_watchdog(); +@@ -87,7 +85,7 @@ void show_registers(struct pt_regs *regs) + int i; + + print_modules(); +- __show_regs(regs, !user_mode_vm(regs)); ++ __show_regs(regs, !user_mode(regs)); + + printk(KERN_EMERG "Process %.*s (pid: %d, ti=%p task=%p task.ti=%p)\n", + TASK_COMM_LEN, current->comm, task_pid_nr(current), +@@ -96,21 +94,22 @@ void show_registers(struct pt_regs *regs) + * When in-kernel, we also print out the stack and code at the + * time of the fault.. + */ +- if (!user_mode_vm(regs)) { ++ if (!user_mode(regs)) { + unsigned int code_prologue = code_bytes * 43 / 64; + unsigned int code_len = code_bytes; + unsigned char c; + u8 *ip; ++ unsigned long cs_base = get_desc_base(&get_cpu_gdt_table(smp_processor_id())[(0xffff & regs->cs) >> 3]); + + printk(KERN_EMERG "Stack:\n"); + show_stack_log_lvl(NULL, regs, ®s->sp, 0, KERN_EMERG); + + printk(KERN_EMERG "Code: "); + +- ip = (u8 *)regs->ip - code_prologue; ++ ip = (u8 *)regs->ip - code_prologue + cs_base; + if (ip < (u8 *)PAGE_OFFSET || probe_kernel_address(ip, c)) { + /* try starting at IP */ +- ip = (u8 *)regs->ip; ++ ip = (u8 *)regs->ip + cs_base; + code_len = code_len - code_prologue + 1; + } + for (i = 0; i < code_len; i++, ip++) { +@@ -119,7 +118,7 @@ void show_registers(struct pt_regs *regs) + printk(KERN_CONT " Bad EIP value."); + break; + } +- if (ip == (u8 *)regs->ip) ++ if (ip == (u8 *)regs->ip + cs_base) + printk(KERN_CONT "<%02x> ", c); + else + printk(KERN_CONT "%02x ", c); +@@ -132,6 +131,7 @@ int is_valid_bugaddr(unsigned long ip) + { + unsigned short ud2; + ++ ip = ktla_ktva(ip); + if (ip < PAGE_OFFSET) + return 0; + if (probe_kernel_address((unsigned short *)ip, ud2)) +@@ -139,3 +139,15 @@ int is_valid_bugaddr(unsigned long ip) + + return ud2 == 0x0b0f; + } ++ ++#ifdef CONFIG_PAX_MEMORY_STACKLEAK ++void pax_check_alloca(unsigned long size) ++{ ++ unsigned long sp = (unsigned long)&sp, stack_left; ++ ++ /* all kernel stacks are of the same size */ ++ stack_left = sp & (THREAD_SIZE - 1); ++ BUG_ON(stack_left < 256 || size >= stack_left - 256); ++} ++EXPORT_SYMBOL(pax_check_alloca); ++#endif +diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c +index 17107bd..9623722 100644 +--- a/arch/x86/kernel/dumpstack_64.c ++++ b/arch/x86/kernel/dumpstack_64.c +@@ -119,9 +119,9 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, + unsigned long *irq_stack_end = + (unsigned long *)per_cpu(irq_stack_ptr, cpu); + unsigned used = 0; +- struct thread_info *tinfo; + int graph = 0; + unsigned long dummy; ++ void *stack_start; + + if (!task) + task = current; +@@ -142,10 +142,10 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, + * current stack address. If the stacks consist of nested + * exceptions + */ +- tinfo = task_thread_info(task); + for (;;) { + char *id; + unsigned long *estack_end; ++ + estack_end = in_exception_stack(cpu, (unsigned long)stack, + &used, &id); + +@@ -153,7 +153,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, + if (ops->stack(data, id) < 0) + break; + +- bp = ops->walk_stack(tinfo, stack, bp, ops, ++ bp = ops->walk_stack(task, estack_end - EXCEPTION_STKSZ, stack, bp, ops, + data, estack_end, &graph); + ops->stack(data, "<EOE>"); + /* +@@ -161,6 +161,8 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, + * second-to-last pointer (index -2 to end) in the + * exception stack: + */ ++ if ((u16)estack_end[-1] != __KERNEL_DS) ++ goto out; + stack = (unsigned long *) estack_end[-2]; + continue; + } +@@ -172,7 +174,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, + if (in_irq_stack(stack, irq_stack, irq_stack_end)) { + if (ops->stack(data, "IRQ") < 0) + break; +- bp = ops->walk_stack(tinfo, stack, bp, ++ bp = ops->walk_stack(task, irq_stack, stack, bp, + ops, data, irq_stack_end, &graph); + /* + * We link to the next stack (which would be +@@ -191,7 +193,9 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, + /* + * This handles the process stack: + */ +- bp = ops->walk_stack(tinfo, stack, bp, ops, data, NULL, &graph); ++ stack_start = (void *)((unsigned long)stack & ~(THREAD_SIZE-1)); ++ bp = ops->walk_stack(task, stack_start, stack, bp, ops, data, NULL, &graph); ++out: + put_cpu(); + } + EXPORT_SYMBOL(dump_trace); +@@ -305,3 +309,50 @@ int is_valid_bugaddr(unsigned long ip) + + return ud2 == 0x0b0f; + } ++ ++#ifdef CONFIG_PAX_MEMORY_STACKLEAK ++void pax_check_alloca(unsigned long size) ++{ ++ unsigned long sp = (unsigned long)&sp, stack_start, stack_end; ++ unsigned cpu, used; ++ char *id; ++ ++ /* check the process stack first */ ++ stack_start = (unsigned long)task_stack_page(current); ++ stack_end = stack_start + THREAD_SIZE; ++ if (likely(stack_start <= sp && sp < stack_end)) { ++ unsigned long stack_left = sp & (THREAD_SIZE - 1); ++ BUG_ON(stack_left < 256 || size >= stack_left - 256); ++ return; ++ } ++ ++ cpu = get_cpu(); ++ ++ /* check the irq stacks */ ++ stack_end = (unsigned long)per_cpu(irq_stack_ptr, cpu); ++ stack_start = stack_end - IRQ_STACK_SIZE; ++ if (stack_start <= sp && sp < stack_end) { ++ unsigned long stack_left = sp & (IRQ_STACK_SIZE - 1); ++ put_cpu(); ++ BUG_ON(stack_left < 256 || size >= stack_left - 256); ++ return; ++ } ++ ++ /* check the exception stacks */ ++ used = 0; ++ stack_end = (unsigned long)in_exception_stack(cpu, sp, &used, &id); ++ stack_start = stack_end - EXCEPTION_STKSZ; ++ if (stack_end && stack_start <= sp && sp < stack_end) { ++ unsigned long stack_left = sp & (EXCEPTION_STKSZ - 1); ++ put_cpu(); ++ BUG_ON(stack_left < 256 || size >= stack_left - 256); ++ return; ++ } ++ ++ put_cpu(); ++ ++ /* unknown stack */ ++ BUG(); ++} ++EXPORT_SYMBOL(pax_check_alloca); ++#endif +diff --git a/arch/x86/kernel/early_printk.c b/arch/x86/kernel/early_printk.c +index 9b9f18b..9fcaa04 100644 +--- a/arch/x86/kernel/early_printk.c ++++ b/arch/x86/kernel/early_printk.c +@@ -7,6 +7,7 @@ + #include <linux/pci_regs.h> + #include <linux/pci_ids.h> + #include <linux/errno.h> ++#include <linux/sched.h> + #include <asm/io.h> + #include <asm/processor.h> + #include <asm/fcntl.h> +diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S +index 7b784f4..db6b628 100644 +--- a/arch/x86/kernel/entry_32.S ++++ b/arch/x86/kernel/entry_32.S +@@ -179,13 +179,146 @@ + /*CFI_REL_OFFSET gs, PT_GS*/ + .endm + .macro SET_KERNEL_GS reg ++ ++#ifdef CONFIG_CC_STACKPROTECTOR + movl $(__KERNEL_STACK_CANARY), \reg ++#elif defined(CONFIG_PAX_MEMORY_UDEREF) ++ movl $(__USER_DS), \reg ++#else ++ xorl \reg, \reg ++#endif ++ + movl \reg, %gs + .endm + + #endif /* CONFIG_X86_32_LAZY_GS */ + +-.macro SAVE_ALL ++.macro pax_enter_kernel ++#ifdef CONFIG_PAX_KERNEXEC ++ call pax_enter_kernel ++#endif ++.endm ++ ++.macro pax_exit_kernel ++#ifdef CONFIG_PAX_KERNEXEC ++ call pax_exit_kernel ++#endif ++.endm ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ENTRY(pax_enter_kernel) ++#ifdef CONFIG_PARAVIRT ++ pushl %eax ++ pushl %ecx ++ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0) ++ mov %eax, %esi ++#else ++ mov %cr0, %esi ++#endif ++ bts $16, %esi ++ jnc 1f ++ mov %cs, %esi ++ cmp $__KERNEL_CS, %esi ++ jz 3f ++ ljmp $__KERNEL_CS, $3f ++1: ljmp $__KERNEXEC_KERNEL_CS, $2f ++2: ++#ifdef CONFIG_PARAVIRT ++ mov %esi, %eax ++ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0) ++#else ++ mov %esi, %cr0 ++#endif ++3: ++#ifdef CONFIG_PARAVIRT ++ popl %ecx ++ popl %eax ++#endif ++ ret ++ENDPROC(pax_enter_kernel) ++ ++ENTRY(pax_exit_kernel) ++#ifdef CONFIG_PARAVIRT ++ pushl %eax ++ pushl %ecx ++#endif ++ mov %cs, %esi ++ cmp $__KERNEXEC_KERNEL_CS, %esi ++ jnz 2f ++#ifdef CONFIG_PARAVIRT ++ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0); ++ mov %eax, %esi ++#else ++ mov %cr0, %esi ++#endif ++ btr $16, %esi ++ ljmp $__KERNEL_CS, $1f ++1: ++#ifdef CONFIG_PARAVIRT ++ mov %esi, %eax ++ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0); ++#else ++ mov %esi, %cr0 ++#endif ++2: ++#ifdef CONFIG_PARAVIRT ++ popl %ecx ++ popl %eax ++#endif ++ ret ++ENDPROC(pax_exit_kernel) ++#endif ++ ++.macro pax_erase_kstack ++#ifdef CONFIG_PAX_MEMORY_STACKLEAK ++ call pax_erase_kstack ++#endif ++.endm ++ ++#ifdef CONFIG_PAX_MEMORY_STACKLEAK ++/* ++ * ebp: thread_info ++ * ecx, edx: can be clobbered ++ */ ++ENTRY(pax_erase_kstack) ++ pushl %edi ++ pushl %eax ++ ++ mov TI_lowest_stack(%ebp), %edi ++ mov $-0xBEEF, %eax ++ std ++ ++1: mov %edi, %ecx ++ and $THREAD_SIZE_asm - 1, %ecx ++ shr $2, %ecx ++ repne scasl ++ jecxz 2f ++ ++ cmp $2*16, %ecx ++ jc 2f ++ ++ mov $2*16, %ecx ++ repe scasl ++ jecxz 2f ++ jne 1b ++ ++2: cld ++ mov %esp, %ecx ++ sub %edi, %ecx ++ shr $2, %ecx ++ rep stosl ++ ++ mov TI_task_thread_sp0(%ebp), %edi ++ sub $128, %edi ++ mov %edi, TI_lowest_stack(%ebp) ++ ++ popl %eax ++ popl %edi ++ ret ++ENDPROC(pax_erase_kstack) ++#endif ++ ++.macro __SAVE_ALL _DS + cld + PUSH_GS + pushl_cfi %fs +@@ -208,7 +341,7 @@ + CFI_REL_OFFSET ecx, 0 + pushl_cfi %ebx + CFI_REL_OFFSET ebx, 0 +- movl $(__USER_DS), %edx ++ movl $\_DS, %edx + movl %edx, %ds + movl %edx, %es + movl $(__KERNEL_PERCPU), %edx +@@ -216,6 +349,15 @@ + SET_KERNEL_GS %edx + .endm + ++.macro SAVE_ALL ++#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF) ++ __SAVE_ALL __KERNEL_DS ++ pax_enter_kernel ++#else ++ __SAVE_ALL __USER_DS ++#endif ++.endm ++ + .macro RESTORE_INT_REGS + popl_cfi %ebx + CFI_RESTORE ebx +@@ -301,7 +443,7 @@ ENTRY(ret_from_fork) + popfl_cfi + jmp syscall_exit + CFI_ENDPROC +-END(ret_from_fork) ++ENDPROC(ret_from_fork) + + /* + * Interrupt exit functions should be protected against kprobes +@@ -335,7 +477,15 @@ resume_userspace_sig: + andl $SEGMENT_RPL_MASK, %eax + #endif + cmpl $USER_RPL, %eax ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ jae resume_userspace ++ ++ pax_exit_kernel ++ jmp resume_kernel ++#else + jb resume_kernel # not returning to v8086 or userspace ++#endif + + ENTRY(resume_userspace) + LOCKDEP_SYS_EXIT +@@ -347,8 +497,8 @@ ENTRY(resume_userspace) + andl $_TIF_WORK_MASK, %ecx # is there any work to be done on + # int/exception return? + jne work_pending +- jmp restore_all +-END(ret_from_exception) ++ jmp restore_all_pax ++ENDPROC(ret_from_exception) + + #ifdef CONFIG_PREEMPT + ENTRY(resume_kernel) +@@ -363,7 +513,7 @@ need_resched: + jz restore_all + call preempt_schedule_irq + jmp need_resched +-END(resume_kernel) ++ENDPROC(resume_kernel) + #endif + CFI_ENDPROC + /* +@@ -397,23 +547,34 @@ sysenter_past_esp: + /*CFI_REL_OFFSET cs, 0*/ + /* + * Push current_thread_info()->sysenter_return to the stack. +- * A tiny bit of offset fixup is necessary - 4*4 means the 4 words +- * pushed above; +8 corresponds to copy_thread's esp0 setting. + */ +- pushl_cfi ((TI_sysenter_return)-THREAD_SIZE+8+4*4)(%esp) ++ pushl_cfi $0 + CFI_REL_OFFSET eip, 0 + + pushl_cfi %eax + SAVE_ALL ++ GET_THREAD_INFO(%ebp) ++ movl TI_sysenter_return(%ebp),%ebp ++ movl %ebp,PT_EIP(%esp) + ENABLE_INTERRUPTS(CLBR_NONE) + + /* + * Load the potential sixth argument from user stack. + * Careful about security. + */ ++ movl PT_OLDESP(%esp),%ebp ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ mov PT_OLDSS(%esp),%ds ++1: movl %ds:(%ebp),%ebp ++ push %ss ++ pop %ds ++#else + cmpl $__PAGE_OFFSET-3,%ebp + jae syscall_fault + 1: movl (%ebp),%ebp ++#endif ++ + movl %ebp,PT_EBP(%esp) + .section __ex_table,"a" + .align 4 +@@ -436,12 +597,24 @@ sysenter_do_call: + testl $_TIF_ALLWORK_MASK, %ecx + jne sysexit_audit + sysenter_exit: ++ ++#ifdef CONFIG_PAX_RANDKSTACK ++ pushl_cfi %eax ++ movl %esp, %eax ++ call pax_randomize_kstack ++ popl_cfi %eax ++#endif ++ ++ pax_erase_kstack ++ + /* if something modifies registers it must also disable sysexit */ + movl PT_EIP(%esp), %edx + movl PT_OLDESP(%esp), %ecx + xorl %ebp,%ebp + TRACE_IRQS_ON + 1: mov PT_FS(%esp), %fs ++2: mov PT_DS(%esp), %ds ++3: mov PT_ES(%esp), %es + PTGS_TO_GS + ENABLE_INTERRUPTS_SYSEXIT + +@@ -458,6 +631,9 @@ sysenter_audit: + movl %eax,%edx /* 2nd arg: syscall number */ + movl $AUDIT_ARCH_I386,%eax /* 1st arg: audit arch */ + call __audit_syscall_entry ++ ++ pax_erase_kstack ++ + pushl_cfi %ebx + movl PT_EAX(%esp),%eax /* reload syscall number */ + jmp sysenter_do_call +@@ -483,11 +659,17 @@ sysexit_audit: + + CFI_ENDPROC + .pushsection .fixup,"ax" +-2: movl $0,PT_FS(%esp) ++4: movl $0,PT_FS(%esp) ++ jmp 1b ++5: movl $0,PT_DS(%esp) ++ jmp 1b ++6: movl $0,PT_ES(%esp) + jmp 1b + .section __ex_table,"a" + .align 4 +- .long 1b,2b ++ .long 1b,4b ++ .long 2b,5b ++ .long 3b,6b + .popsection + PTGS_TO_GS_EX + ENDPROC(ia32_sysenter_target) +@@ -520,6 +702,15 @@ syscall_exit: + testl $_TIF_ALLWORK_MASK, %ecx # current->work + jne syscall_exit_work + ++restore_all_pax: ++ ++#ifdef CONFIG_PAX_RANDKSTACK ++ movl %esp, %eax ++ call pax_randomize_kstack ++#endif ++ ++ pax_erase_kstack ++ + restore_all: + TRACE_IRQS_IRET + restore_all_notrace: +@@ -579,14 +770,34 @@ ldt_ss: + * compensating for the offset by changing to the ESPFIX segment with + * a base address that matches for the difference. + */ +-#define GDT_ESPFIX_SS PER_CPU_VAR(gdt_page) + (GDT_ENTRY_ESPFIX_SS * 8) ++#define GDT_ESPFIX_SS (GDT_ENTRY_ESPFIX_SS * 8)(%ebx) + mov %esp, %edx /* load kernel esp */ + mov PT_OLDESP(%esp), %eax /* load userspace esp */ + mov %dx, %ax /* eax: new kernel esp */ + sub %eax, %edx /* offset (low word is 0) */ ++#ifdef CONFIG_SMP ++ movl PER_CPU_VAR(cpu_number), %ebx ++ shll $PAGE_SHIFT_asm, %ebx ++ addl $cpu_gdt_table, %ebx ++#else ++ movl $cpu_gdt_table, %ebx ++#endif + shr $16, %edx +- mov %dl, GDT_ESPFIX_SS + 4 /* bits 16..23 */ +- mov %dh, GDT_ESPFIX_SS + 7 /* bits 24..31 */ ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ mov %cr0, %esi ++ btr $16, %esi ++ mov %esi, %cr0 ++#endif ++ ++ mov %dl, 4 + GDT_ESPFIX_SS /* bits 16..23 */ ++ mov %dh, 7 + GDT_ESPFIX_SS /* bits 24..31 */ ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ bts $16, %esi ++ mov %esi, %cr0 ++#endif ++ + pushl_cfi $__ESPFIX_SS + pushl_cfi %eax /* new kernel esp */ + /* Disable interrupts, but do not irqtrace this section: we +@@ -615,38 +826,30 @@ work_resched: + movl TI_flags(%ebp), %ecx + andl $_TIF_WORK_MASK, %ecx # is there any work to be done other + # than syscall tracing? +- jz restore_all ++ jz restore_all_pax + testb $_TIF_NEED_RESCHED, %cl + jnz work_resched + + work_notifysig: # deal with pending signals and + # notify-resume requests ++ movl %esp, %eax + #ifdef CONFIG_VM86 + testl $X86_EFLAGS_VM, PT_EFLAGS(%esp) +- movl %esp, %eax +- jne work_notifysig_v86 # returning to kernel-space or ++ jz 1f # returning to kernel-space or + # vm86-space +- TRACE_IRQS_ON +- ENABLE_INTERRUPTS(CLBR_NONE) +- xorl %edx, %edx +- call do_notify_resume +- jmp resume_userspace_sig + +- ALIGN +-work_notifysig_v86: + pushl_cfi %ecx # save ti_flags for do_notify_resume + call save_v86_state # %eax contains pt_regs pointer + popl_cfi %ecx + movl %eax, %esp +-#else +- movl %esp, %eax ++1: + #endif + TRACE_IRQS_ON + ENABLE_INTERRUPTS(CLBR_NONE) + xorl %edx, %edx + call do_notify_resume + jmp resume_userspace_sig +-END(work_pending) ++ENDPROC(work_pending) + + # perform syscall exit tracing + ALIGN +@@ -654,11 +857,14 @@ syscall_trace_entry: + movl $-ENOSYS,PT_EAX(%esp) + movl %esp, %eax + call syscall_trace_enter ++ ++ pax_erase_kstack ++ + /* What it returned is what we'll actually use. */ + cmpl $(NR_syscalls), %eax + jnae syscall_call + jmp syscall_exit +-END(syscall_trace_entry) ++ENDPROC(syscall_trace_entry) + + # perform syscall exit tracing + ALIGN +@@ -671,20 +877,24 @@ syscall_exit_work: + movl %esp, %eax + call syscall_trace_leave + jmp resume_userspace +-END(syscall_exit_work) ++ENDPROC(syscall_exit_work) + CFI_ENDPROC + + RING0_INT_FRAME # can't unwind into user space anyway + syscall_fault: ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ push %ss ++ pop %ds ++#endif + GET_THREAD_INFO(%ebp) + movl $-EFAULT,PT_EAX(%esp) + jmp resume_userspace +-END(syscall_fault) ++ENDPROC(syscall_fault) + + syscall_badsys: + movl $-ENOSYS,PT_EAX(%esp) + jmp resume_userspace +-END(syscall_badsys) ++ENDPROC(syscall_badsys) + CFI_ENDPROC + /* + * End of kprobes section +@@ -756,6 +966,36 @@ ENTRY(ptregs_clone) + CFI_ENDPROC + ENDPROC(ptregs_clone) + ++ ALIGN; ++ENTRY(kernel_execve) ++ CFI_STARTPROC ++ pushl_cfi %ebp ++ sub $PT_OLDSS+4,%esp ++ pushl_cfi %edi ++ pushl_cfi %ecx ++ pushl_cfi %eax ++ lea 3*4(%esp),%edi ++ mov $PT_OLDSS/4+1,%ecx ++ xorl %eax,%eax ++ rep stosl ++ popl_cfi %eax ++ popl_cfi %ecx ++ popl_cfi %edi ++ movl $X86_EFLAGS_IF,PT_EFLAGS(%esp) ++ pushl_cfi %esp ++ call sys_execve ++ add $4,%esp ++ CFI_ADJUST_CFA_OFFSET -4 ++ GET_THREAD_INFO(%ebp) ++ test %eax,%eax ++ jz syscall_exit ++ add $PT_OLDSS+4,%esp ++ CFI_ADJUST_CFA_OFFSET -PT_OLDSS-4 ++ popl_cfi %ebp ++ ret ++ CFI_ENDPROC ++ENDPROC(kernel_execve) ++ + .macro FIXUP_ESPFIX_STACK + /* + * Switch back for ESPFIX stack to the normal zerobased stack +@@ -765,8 +1005,15 @@ ENDPROC(ptregs_clone) + * normal stack and adjusts ESP with the matching offset. + */ + /* fixup the stack */ +- mov GDT_ESPFIX_SS + 4, %al /* bits 16..23 */ +- mov GDT_ESPFIX_SS + 7, %ah /* bits 24..31 */ ++#ifdef CONFIG_SMP ++ movl PER_CPU_VAR(cpu_number), %ebx ++ shll $PAGE_SHIFT_asm, %ebx ++ addl $cpu_gdt_table, %ebx ++#else ++ movl $cpu_gdt_table, %ebx ++#endif ++ mov 4 + GDT_ESPFIX_SS, %al /* bits 16..23 */ ++ mov 7 + GDT_ESPFIX_SS, %ah /* bits 24..31 */ + shl $16, %eax + addl %esp, %eax /* the adjusted stack pointer */ + pushl_cfi $__KERNEL_DS +@@ -819,7 +1066,7 @@ vector=vector+1 + .endr + 2: jmp common_interrupt + .endr +-END(irq_entries_start) ++ENDPROC(irq_entries_start) + + .previous + END(interrupt) +@@ -867,7 +1114,7 @@ ENTRY(coprocessor_error) + pushl_cfi $do_coprocessor_error + jmp error_code + CFI_ENDPROC +-END(coprocessor_error) ++ENDPROC(coprocessor_error) + + ENTRY(simd_coprocessor_error) + RING0_INT_FRAME +@@ -888,7 +1135,7 @@ ENTRY(simd_coprocessor_error) + #endif + jmp error_code + CFI_ENDPROC +-END(simd_coprocessor_error) ++ENDPROC(simd_coprocessor_error) + + ENTRY(device_not_available) + RING0_INT_FRAME +@@ -896,7 +1143,7 @@ ENTRY(device_not_available) + pushl_cfi $do_device_not_available + jmp error_code + CFI_ENDPROC +-END(device_not_available) ++ENDPROC(device_not_available) + + #ifdef CONFIG_PARAVIRT + ENTRY(native_iret) +@@ -905,12 +1152,12 @@ ENTRY(native_iret) + .align 4 + .long native_iret, iret_exc + .previous +-END(native_iret) ++ENDPROC(native_iret) + + ENTRY(native_irq_enable_sysexit) + sti + sysexit +-END(native_irq_enable_sysexit) ++ENDPROC(native_irq_enable_sysexit) + #endif + + ENTRY(overflow) +@@ -919,7 +1166,7 @@ ENTRY(overflow) + pushl_cfi $do_overflow + jmp error_code + CFI_ENDPROC +-END(overflow) ++ENDPROC(overflow) + + ENTRY(bounds) + RING0_INT_FRAME +@@ -927,7 +1174,7 @@ ENTRY(bounds) + pushl_cfi $do_bounds + jmp error_code + CFI_ENDPROC +-END(bounds) ++ENDPROC(bounds) + + ENTRY(invalid_op) + RING0_INT_FRAME +@@ -935,7 +1182,7 @@ ENTRY(invalid_op) + pushl_cfi $do_invalid_op + jmp error_code + CFI_ENDPROC +-END(invalid_op) ++ENDPROC(invalid_op) + + ENTRY(coprocessor_segment_overrun) + RING0_INT_FRAME +@@ -943,35 +1190,35 @@ ENTRY(coprocessor_segment_overrun) + pushl_cfi $do_coprocessor_segment_overrun + jmp error_code + CFI_ENDPROC +-END(coprocessor_segment_overrun) ++ENDPROC(coprocessor_segment_overrun) + + ENTRY(invalid_TSS) + RING0_EC_FRAME + pushl_cfi $do_invalid_TSS + jmp error_code + CFI_ENDPROC +-END(invalid_TSS) ++ENDPROC(invalid_TSS) + + ENTRY(segment_not_present) + RING0_EC_FRAME + pushl_cfi $do_segment_not_present + jmp error_code + CFI_ENDPROC +-END(segment_not_present) ++ENDPROC(segment_not_present) + + ENTRY(stack_segment) + RING0_EC_FRAME + pushl_cfi $do_stack_segment + jmp error_code + CFI_ENDPROC +-END(stack_segment) ++ENDPROC(stack_segment) + + ENTRY(alignment_check) + RING0_EC_FRAME + pushl_cfi $do_alignment_check + jmp error_code + CFI_ENDPROC +-END(alignment_check) ++ENDPROC(alignment_check) + + ENTRY(divide_error) + RING0_INT_FRAME +@@ -979,7 +1226,7 @@ ENTRY(divide_error) + pushl_cfi $do_divide_error + jmp error_code + CFI_ENDPROC +-END(divide_error) ++ENDPROC(divide_error) + + #ifdef CONFIG_X86_MCE + ENTRY(machine_check) +@@ -988,7 +1235,7 @@ ENTRY(machine_check) + pushl_cfi machine_check_vector + jmp error_code + CFI_ENDPROC +-END(machine_check) ++ENDPROC(machine_check) + #endif + + ENTRY(spurious_interrupt_bug) +@@ -997,7 +1244,7 @@ ENTRY(spurious_interrupt_bug) + pushl_cfi $do_spurious_interrupt_bug + jmp error_code + CFI_ENDPROC +-END(spurious_interrupt_bug) ++ENDPROC(spurious_interrupt_bug) + /* + * End of kprobes section + */ +@@ -1112,7 +1359,7 @@ BUILD_INTERRUPT3(xen_hvm_callback_vector, XEN_HVM_EVTCHN_CALLBACK, + + ENTRY(mcount) + ret +-END(mcount) ++ENDPROC(mcount) + + ENTRY(ftrace_caller) + cmpl $0, function_trace_stop +@@ -1141,7 +1388,7 @@ ftrace_graph_call: + .globl ftrace_stub + ftrace_stub: + ret +-END(ftrace_caller) ++ENDPROC(ftrace_caller) + + #else /* ! CONFIG_DYNAMIC_FTRACE */ + +@@ -1177,7 +1424,7 @@ trace: + popl %ecx + popl %eax + jmp ftrace_stub +-END(mcount) ++ENDPROC(mcount) + #endif /* CONFIG_DYNAMIC_FTRACE */ + #endif /* CONFIG_FUNCTION_TRACER */ + +@@ -1198,7 +1445,7 @@ ENTRY(ftrace_graph_caller) + popl %ecx + popl %eax + ret +-END(ftrace_graph_caller) ++ENDPROC(ftrace_graph_caller) + + .globl return_to_handler + return_to_handler: +@@ -1253,15 +1500,18 @@ error_code: + movl $-1, PT_ORIG_EAX(%esp) # no syscall to restart + REG_TO_PTGS %ecx + SET_KERNEL_GS %ecx +- movl $(__USER_DS), %ecx ++ movl $(__KERNEL_DS), %ecx + movl %ecx, %ds + movl %ecx, %es ++ ++ pax_enter_kernel ++ + TRACE_IRQS_OFF + movl %esp,%eax # pt_regs pointer + call *%edi + jmp ret_from_exception + CFI_ENDPROC +-END(page_fault) ++ENDPROC(page_fault) + + /* + * Debug traps and NMI can happen at the one SYSENTER instruction +@@ -1303,7 +1553,7 @@ debug_stack_correct: + call do_debug + jmp ret_from_exception + CFI_ENDPROC +-END(debug) ++ENDPROC(debug) + + /* + * NMI is doubly nasty. It can happen _while_ we're handling +@@ -1340,6 +1590,9 @@ nmi_stack_correct: + xorl %edx,%edx # zero error code + movl %esp,%eax # pt_regs pointer + call do_nmi ++ ++ pax_exit_kernel ++ + jmp restore_all_notrace + CFI_ENDPROC + +@@ -1376,12 +1629,15 @@ nmi_espfix_stack: + FIXUP_ESPFIX_STACK # %eax == %esp + xorl %edx,%edx # zero error code + call do_nmi ++ ++ pax_exit_kernel ++ + RESTORE_REGS + lss 12+4(%esp), %esp # back to espfix stack + CFI_ADJUST_CFA_OFFSET -24 + jmp irq_return + CFI_ENDPROC +-END(nmi) ++ENDPROC(nmi) + + ENTRY(int3) + RING0_INT_FRAME +@@ -1393,14 +1649,14 @@ ENTRY(int3) + call do_int3 + jmp ret_from_exception + CFI_ENDPROC +-END(int3) ++ENDPROC(int3) + + ENTRY(general_protection) + RING0_EC_FRAME + pushl_cfi $do_general_protection + jmp error_code + CFI_ENDPROC +-END(general_protection) ++ENDPROC(general_protection) + + #ifdef CONFIG_KVM_GUEST + ENTRY(async_page_fault) +@@ -1408,7 +1664,7 @@ ENTRY(async_page_fault) + pushl_cfi $do_async_page_fault + jmp error_code + CFI_ENDPROC +-END(async_page_fault) ++ENDPROC(async_page_fault) + #endif + + /* +diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S +index cdc79b5..4710a75 100644 +--- a/arch/x86/kernel/entry_64.S ++++ b/arch/x86/kernel/entry_64.S +@@ -56,6 +56,8 @@ + #include <asm/ftrace.h> + #include <asm/percpu.h> + #include <linux/err.h> ++#include <asm/pgtable.h> ++#include <asm/alternative-asm.h> + + /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this. */ + #include <linux/elf-em.h> +@@ -69,8 +71,9 @@ + #ifdef CONFIG_FUNCTION_TRACER + #ifdef CONFIG_DYNAMIC_FTRACE + ENTRY(mcount) ++ pax_force_retaddr + retq +-END(mcount) ++ENDPROC(mcount) + + ENTRY(ftrace_caller) + cmpl $0, function_trace_stop +@@ -93,8 +96,9 @@ GLOBAL(ftrace_graph_call) + #endif + + GLOBAL(ftrace_stub) ++ pax_force_retaddr + retq +-END(ftrace_caller) ++ENDPROC(ftrace_caller) + + #else /* ! CONFIG_DYNAMIC_FTRACE */ + ENTRY(mcount) +@@ -113,6 +117,7 @@ ENTRY(mcount) + #endif + + GLOBAL(ftrace_stub) ++ pax_force_retaddr + retq + + trace: +@@ -122,12 +127,13 @@ trace: + movq 8(%rbp), %rsi + subq $MCOUNT_INSN_SIZE, %rdi + ++ pax_force_fptr ftrace_trace_function + call *ftrace_trace_function + + MCOUNT_RESTORE_FRAME + + jmp ftrace_stub +-END(mcount) ++ENDPROC(mcount) + #endif /* CONFIG_DYNAMIC_FTRACE */ + #endif /* CONFIG_FUNCTION_TRACER */ + +@@ -147,8 +153,9 @@ ENTRY(ftrace_graph_caller) + + MCOUNT_RESTORE_FRAME + ++ pax_force_retaddr + retq +-END(ftrace_graph_caller) ++ENDPROC(ftrace_graph_caller) + + GLOBAL(return_to_handler) + subq $24, %rsp +@@ -164,6 +171,7 @@ GLOBAL(return_to_handler) + movq 8(%rsp), %rdx + movq (%rsp), %rax + addq $24, %rsp ++ pax_force_fptr %rdi + jmp *%rdi + #endif + +@@ -179,6 +187,282 @@ ENTRY(native_usergs_sysret64) + ENDPROC(native_usergs_sysret64) + #endif /* CONFIG_PARAVIRT */ + ++ .macro ljmpq sel, off ++#if defined(CONFIG_MPSC) || defined(CONFIG_MCORE2) || defined (CONFIG_MATOM) ++ .byte 0x48; ljmp *1234f(%rip) ++ .pushsection .rodata ++ .align 16 ++ 1234: .quad \off; .word \sel ++ .popsection ++#else ++ pushq $\sel ++ pushq $\off ++ lretq ++#endif ++ .endm ++ ++ .macro pax_enter_kernel ++ pax_set_fptr_mask ++#ifdef CONFIG_PAX_KERNEXEC ++ call pax_enter_kernel ++#endif ++ .endm ++ ++ .macro pax_exit_kernel ++#ifdef CONFIG_PAX_KERNEXEC ++ call pax_exit_kernel ++#endif ++ .endm ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ENTRY(pax_enter_kernel) ++ pushq %rdi ++ ++#ifdef CONFIG_PARAVIRT ++ PV_SAVE_REGS(CLBR_RDI) ++#endif ++ ++ GET_CR0_INTO_RDI ++ bts $16,%rdi ++ jnc 3f ++ mov %cs,%edi ++ cmp $__KERNEL_CS,%edi ++ jnz 2f ++1: ++ ++#ifdef CONFIG_PARAVIRT ++ PV_RESTORE_REGS(CLBR_RDI) ++#endif ++ ++ popq %rdi ++ pax_force_retaddr ++ retq ++ ++2: ljmpq __KERNEL_CS,1f ++3: ljmpq __KERNEXEC_KERNEL_CS,4f ++4: SET_RDI_INTO_CR0 ++ jmp 1b ++ENDPROC(pax_enter_kernel) ++ ++ENTRY(pax_exit_kernel) ++ pushq %rdi ++ ++#ifdef CONFIG_PARAVIRT ++ PV_SAVE_REGS(CLBR_RDI) ++#endif ++ ++ mov %cs,%rdi ++ cmp $__KERNEXEC_KERNEL_CS,%edi ++ jz 2f ++1: ++ ++#ifdef CONFIG_PARAVIRT ++ PV_RESTORE_REGS(CLBR_RDI); ++#endif ++ ++ popq %rdi ++ pax_force_retaddr ++ retq ++ ++2: GET_CR0_INTO_RDI ++ btr $16,%rdi ++ ljmpq __KERNEL_CS,3f ++3: SET_RDI_INTO_CR0 ++ jmp 1b ++#ifdef CONFIG_PARAVIRT ++ PV_RESTORE_REGS(CLBR_RDI); ++#endif ++ ++ popq %rdi ++ pax_force_retaddr ++ retq ++ENDPROC(pax_exit_kernel) ++#endif ++ ++ .macro pax_enter_kernel_user ++ pax_set_fptr_mask ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ call pax_enter_kernel_user ++#endif ++ .endm ++ ++ .macro pax_exit_kernel_user ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ call pax_exit_kernel_user ++#endif ++#ifdef CONFIG_PAX_RANDKSTACK ++ pushq %rax ++ call pax_randomize_kstack ++ popq %rax ++#endif ++ .endm ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ENTRY(pax_enter_kernel_user) ++ pushq %rdi ++ pushq %rbx ++ ++#ifdef CONFIG_PARAVIRT ++ PV_SAVE_REGS(CLBR_RDI) ++#endif ++ ++ GET_CR3_INTO_RDI ++ mov %rdi,%rbx ++ add $__START_KERNEL_map,%rbx ++ sub phys_base(%rip),%rbx ++ ++#ifdef CONFIG_PARAVIRT ++ pushq %rdi ++ cmpl $0, pv_info+PARAVIRT_enabled ++ jz 1f ++ i = 0 ++ .rept USER_PGD_PTRS ++ mov i*8(%rbx),%rsi ++ mov $0,%sil ++ lea i*8(%rbx),%rdi ++ call PARA_INDIRECT(pv_mmu_ops+PV_MMU_set_pgd_batched) ++ i = i + 1 ++ .endr ++ jmp 2f ++1: ++#endif ++ ++ i = 0 ++ .rept USER_PGD_PTRS ++ movb $0,i*8(%rbx) ++ i = i + 1 ++ .endr ++ ++#ifdef CONFIG_PARAVIRT ++2: popq %rdi ++#endif ++ SET_RDI_INTO_CR3 ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ GET_CR0_INTO_RDI ++ bts $16,%rdi ++ SET_RDI_INTO_CR0 ++#endif ++ ++#ifdef CONFIG_PARAVIRT ++ PV_RESTORE_REGS(CLBR_RDI) ++#endif ++ ++ popq %rbx ++ popq %rdi ++ pax_force_retaddr ++ retq ++ENDPROC(pax_enter_kernel_user) ++ ++ENTRY(pax_exit_kernel_user) ++ push %rdi ++ ++#ifdef CONFIG_PARAVIRT ++ pushq %rbx ++ PV_SAVE_REGS(CLBR_RDI) ++#endif ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ GET_CR0_INTO_RDI ++ btr $16,%rdi ++ SET_RDI_INTO_CR0 ++#endif ++ ++ GET_CR3_INTO_RDI ++ add $__START_KERNEL_map,%rdi ++ sub phys_base(%rip),%rdi ++ ++#ifdef CONFIG_PARAVIRT ++ cmpl $0, pv_info+PARAVIRT_enabled ++ jz 1f ++ mov %rdi,%rbx ++ i = 0 ++ .rept USER_PGD_PTRS ++ mov i*8(%rbx),%rsi ++ mov $0x67,%sil ++ lea i*8(%rbx),%rdi ++ call PARA_INDIRECT(pv_mmu_ops+PV_MMU_set_pgd_batched) ++ i = i + 1 ++ .endr ++ jmp 2f ++1: ++#endif ++ ++ i = 0 ++ .rept USER_PGD_PTRS ++ movb $0x67,i*8(%rdi) ++ i = i + 1 ++ .endr ++ ++#ifdef CONFIG_PARAVIRT ++2: PV_RESTORE_REGS(CLBR_RDI) ++ popq %rbx ++#endif ++ ++ popq %rdi ++ pax_force_retaddr ++ retq ++ENDPROC(pax_exit_kernel_user) ++#endif ++ ++.macro pax_erase_kstack ++#ifdef CONFIG_PAX_MEMORY_STACKLEAK ++ call pax_erase_kstack ++#endif ++.endm ++ ++#ifdef CONFIG_PAX_MEMORY_STACKLEAK ++/* ++ * r11: thread_info ++ * rcx, rdx: can be clobbered ++ */ ++ENTRY(pax_erase_kstack) ++ pushq %rdi ++ pushq %rax ++ pushq %r11 ++ ++ GET_THREAD_INFO(%r11) ++ mov TI_lowest_stack(%r11), %rdi ++ mov $-0xBEEF, %rax ++ std ++ ++1: mov %edi, %ecx ++ and $THREAD_SIZE_asm - 1, %ecx ++ shr $3, %ecx ++ repne scasq ++ jecxz 2f ++ ++ cmp $2*8, %ecx ++ jc 2f ++ ++ mov $2*8, %ecx ++ repe scasq ++ jecxz 2f ++ jne 1b ++ ++2: cld ++ mov %esp, %ecx ++ sub %edi, %ecx ++ ++ cmp $THREAD_SIZE_asm, %rcx ++ jb 3f ++ ud2 ++3: ++ ++ shr $3, %ecx ++ rep stosq ++ ++ mov TI_task_thread_sp0(%r11), %rdi ++ sub $256, %rdi ++ mov %rdi, TI_lowest_stack(%r11) ++ ++ popq %r11 ++ popq %rax ++ popq %rdi ++ pax_force_retaddr ++ ret ++ENDPROC(pax_erase_kstack) ++#endif + + .macro TRACE_IRQS_IRETQ offset=ARGOFFSET + #ifdef CONFIG_TRACE_IRQFLAGS +@@ -232,8 +516,8 @@ ENDPROC(native_usergs_sysret64) + .endm + + .macro UNFAKE_STACK_FRAME +- addq $8*6, %rsp +- CFI_ADJUST_CFA_OFFSET -(6*8) ++ addq $8*6 + ARG_SKIP, %rsp ++ CFI_ADJUST_CFA_OFFSET -(6*8 + ARG_SKIP) + .endm + + /* +@@ -320,7 +604,7 @@ ENDPROC(native_usergs_sysret64) + movq %rsp, %rsi + + leaq -RBP(%rsp),%rdi /* arg1 for handler */ +- testl $3, CS-RBP(%rsi) ++ testb $3, CS-RBP(%rsi) + je 1f + SWAPGS + /* +@@ -355,9 +639,10 @@ ENTRY(save_rest) + movq_cfi r15, R15+16 + movq %r11, 8(%rsp) /* return address */ + FIXUP_TOP_OF_STACK %r11, 16 ++ pax_force_retaddr + ret + CFI_ENDPROC +-END(save_rest) ++ENDPROC(save_rest) + + /* save complete stack frame */ + .pushsection .kprobes.text, "ax" +@@ -386,9 +671,10 @@ ENTRY(save_paranoid) + js 1f /* negative -> in kernel */ + SWAPGS + xorl %ebx,%ebx +-1: ret ++1: pax_force_retaddr_bts ++ ret + CFI_ENDPROC +-END(save_paranoid) ++ENDPROC(save_paranoid) + .popsection + + /* +@@ -410,7 +696,7 @@ ENTRY(ret_from_fork) + + RESTORE_REST + +- testl $3, CS-ARGOFFSET(%rsp) # from kernel_thread? ++ testb $3, CS-ARGOFFSET(%rsp) # from kernel_thread? + jz retint_restore_args + + testl $_TIF_IA32, TI_flags(%rcx) # 32-bit compat task needs IRET +@@ -420,7 +706,7 @@ ENTRY(ret_from_fork) + jmp ret_from_sys_call # go to the SYSRET fastpath + + CFI_ENDPROC +-END(ret_from_fork) ++ENDPROC(ret_from_fork) + + /* + * System call entry. Up to 6 arguments in registers are supported. +@@ -456,7 +742,7 @@ END(ret_from_fork) + ENTRY(system_call) + CFI_STARTPROC simple + CFI_SIGNAL_FRAME +- CFI_DEF_CFA rsp,KERNEL_STACK_OFFSET ++ CFI_DEF_CFA rsp,0 + CFI_REGISTER rip,rcx + /*CFI_REGISTER rflags,r11*/ + SWAPGS_UNSAFE_STACK +@@ -469,16 +755,18 @@ GLOBAL(system_call_after_swapgs) + + movq %rsp,PER_CPU_VAR(old_rsp) + movq PER_CPU_VAR(kernel_stack),%rsp ++ SAVE_ARGS 8*6,0 ++ pax_enter_kernel_user + /* + * No need to follow this irqs off/on section - it's straight + * and short: + */ + ENABLE_INTERRUPTS(CLBR_NONE) +- SAVE_ARGS 8,0 + movq %rax,ORIG_RAX-ARGOFFSET(%rsp) + movq %rcx,RIP-ARGOFFSET(%rsp) + CFI_REL_OFFSET rip,RIP-ARGOFFSET +- testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) ++ GET_THREAD_INFO(%rcx) ++ testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%rcx) + jnz tracesys + system_call_fastpath: + #if __SYSCALL_MASK == ~0 +@@ -488,7 +776,7 @@ system_call_fastpath: + cmpl $__NR_syscall_max,%eax + #endif + ja badsys +- movq %r10,%rcx ++ movq R10-ARGOFFSET(%rsp),%rcx + call *sys_call_table(,%rax,8) # XXX: rip relative + movq %rax,RAX-ARGOFFSET(%rsp) + /* +@@ -502,10 +790,13 @@ sysret_check: + LOCKDEP_SYS_EXIT + DISABLE_INTERRUPTS(CLBR_NONE) + TRACE_IRQS_OFF +- movl TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET),%edx ++ GET_THREAD_INFO(%rcx) ++ movl TI_flags(%rcx),%edx + andl %edi,%edx + jnz sysret_careful + CFI_REMEMBER_STATE ++ pax_exit_kernel_user ++ pax_erase_kstack + /* + * sysretq will re-enable interrupts: + */ +@@ -557,14 +848,18 @@ badsys: + * jump back to the normal fast path. + */ + auditsys: +- movq %r10,%r9 /* 6th arg: 4th syscall arg */ ++ movq R10-ARGOFFSET(%rsp),%r9 /* 6th arg: 4th syscall arg */ + movq %rdx,%r8 /* 5th arg: 3rd syscall arg */ + movq %rsi,%rcx /* 4th arg: 2nd syscall arg */ + movq %rdi,%rdx /* 3rd arg: 1st syscall arg */ + movq %rax,%rsi /* 2nd arg: syscall number */ + movl $AUDIT_ARCH_X86_64,%edi /* 1st arg: audit arch */ + call __audit_syscall_entry ++ ++ pax_erase_kstack ++ + LOAD_ARGS 0 /* reload call-clobbered registers */ ++ pax_set_fptr_mask + jmp system_call_fastpath + + /* +@@ -585,7 +880,7 @@ sysret_audit: + /* Do syscall tracing */ + tracesys: + #ifdef CONFIG_AUDITSYSCALL +- testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET) ++ testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%rcx) + jz auditsys + #endif + SAVE_REST +@@ -593,12 +888,16 @@ tracesys: + FIXUP_TOP_OF_STACK %rdi + movq %rsp,%rdi + call syscall_trace_enter ++ ++ pax_erase_kstack ++ + /* + * Reload arg registers from stack in case ptrace changed them. + * We don't reload %rax because syscall_trace_enter() returned + * the value it wants us to use in the table lookup. + */ + LOAD_ARGS ARGOFFSET, 1 ++ pax_set_fptr_mask + RESTORE_REST + #if __SYSCALL_MASK == ~0 + cmpq $__NR_syscall_max,%rax +@@ -607,7 +906,7 @@ tracesys: + cmpl $__NR_syscall_max,%eax + #endif + ja int_ret_from_sys_call /* RAX(%rsp) set to -ENOSYS above */ +- movq %r10,%rcx /* fixup for C */ ++ movq R10-ARGOFFSET(%rsp),%rcx /* fixup for C */ + call *sys_call_table(,%rax,8) + movq %rax,RAX-ARGOFFSET(%rsp) + /* Use IRET because user could have changed frame */ +@@ -628,6 +927,7 @@ GLOBAL(int_with_check) + andl %edi,%edx + jnz int_careful + andl $~TS_COMPAT,TI_status(%rcx) ++ pax_erase_kstack + jmp retint_swapgs + + /* Either reschedule or signal or syscall exit tracking needed. */ +@@ -674,7 +974,7 @@ int_restore_rest: + TRACE_IRQS_OFF + jmp int_with_check + CFI_ENDPROC +-END(system_call) ++ENDPROC(system_call) + + /* + * Certain special system calls that need to save a complete full stack frame. +@@ -690,7 +990,7 @@ ENTRY(\label) + call \func + jmp ptregscall_common + CFI_ENDPROC +-END(\label) ++ENDPROC(\label) + .endm + + PTREGSCALL stub_clone, sys_clone, %r8 +@@ -708,9 +1008,10 @@ ENTRY(ptregscall_common) + movq_cfi_restore R12+8, r12 + movq_cfi_restore RBP+8, rbp + movq_cfi_restore RBX+8, rbx ++ pax_force_retaddr + ret $REST_SKIP /* pop extended registers */ + CFI_ENDPROC +-END(ptregscall_common) ++ENDPROC(ptregscall_common) + + ENTRY(stub_execve) + CFI_STARTPROC +@@ -725,7 +1026,7 @@ ENTRY(stub_execve) + RESTORE_REST + jmp int_ret_from_sys_call + CFI_ENDPROC +-END(stub_execve) ++ENDPROC(stub_execve) + + /* + * sigreturn is special because it needs to restore all registers on return. +@@ -743,7 +1044,7 @@ ENTRY(stub_rt_sigreturn) + RESTORE_REST + jmp int_ret_from_sys_call + CFI_ENDPROC +-END(stub_rt_sigreturn) ++ENDPROC(stub_rt_sigreturn) + + #ifdef CONFIG_X86_X32_ABI + PTREGSCALL stub_x32_sigaltstack, sys32_sigaltstack, %rdx +@@ -812,7 +1113,7 @@ vector=vector+1 + 2: jmp common_interrupt + .endr + CFI_ENDPROC +-END(irq_entries_start) ++ENDPROC(irq_entries_start) + + .previous + END(interrupt) +@@ -832,6 +1133,16 @@ END(interrupt) + subq $ORIG_RAX-RBP, %rsp + CFI_ADJUST_CFA_OFFSET ORIG_RAX-RBP + SAVE_ARGS_IRQ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ testb $3, CS(%rdi) ++ jnz 1f ++ pax_enter_kernel ++ jmp 2f ++1: pax_enter_kernel_user ++2: ++#else ++ pax_enter_kernel ++#endif + call \func + .endm + +@@ -863,7 +1174,7 @@ ret_from_intr: + + exit_intr: + GET_THREAD_INFO(%rcx) +- testl $3,CS-ARGOFFSET(%rsp) ++ testb $3,CS-ARGOFFSET(%rsp) + je retint_kernel + + /* Interrupt came from user space */ +@@ -885,12 +1196,15 @@ retint_swapgs: /* return to user-space */ + * The iretq could re-enable interrupts: + */ + DISABLE_INTERRUPTS(CLBR_ANY) ++ pax_exit_kernel_user + TRACE_IRQS_IRETQ + SWAPGS + jmp restore_args + + retint_restore_args: /* return to kernel space */ + DISABLE_INTERRUPTS(CLBR_ANY) ++ pax_exit_kernel ++ pax_force_retaddr RIP-ARGOFFSET + /* + * The iretq could re-enable interrupts: + */ +@@ -979,7 +1293,7 @@ ENTRY(retint_kernel) + #endif + + CFI_ENDPROC +-END(common_interrupt) ++ENDPROC(common_interrupt) + /* + * End of kprobes section + */ +@@ -996,7 +1310,7 @@ ENTRY(\sym) + interrupt \do_sym + jmp ret_from_intr + CFI_ENDPROC +-END(\sym) ++ENDPROC(\sym) + .endm + + #ifdef CONFIG_SMP +@@ -1069,12 +1383,22 @@ ENTRY(\sym) + CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 + call error_entry + DEFAULT_FRAME 0 ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ testb $3, CS(%rsp) ++ jnz 1f ++ pax_enter_kernel ++ jmp 2f ++1: pax_enter_kernel_user ++2: ++#else ++ pax_enter_kernel ++#endif + movq %rsp,%rdi /* pt_regs pointer */ + xorl %esi,%esi /* no error code */ + call \do_sym + jmp error_exit /* %ebx: no swapgs flag */ + CFI_ENDPROC +-END(\sym) ++ENDPROC(\sym) + .endm + + .macro paranoidzeroentry sym do_sym +@@ -1086,15 +1410,25 @@ ENTRY(\sym) + CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 + call save_paranoid + TRACE_IRQS_OFF ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ testb $3, CS(%rsp) ++ jnz 1f ++ pax_enter_kernel ++ jmp 2f ++1: pax_enter_kernel_user ++2: ++#else ++ pax_enter_kernel ++#endif + movq %rsp,%rdi /* pt_regs pointer */ + xorl %esi,%esi /* no error code */ + call \do_sym + jmp paranoid_exit /* %ebx: no swapgs flag */ + CFI_ENDPROC +-END(\sym) ++ENDPROC(\sym) + .endm + +-#define INIT_TSS_IST(x) PER_CPU_VAR(init_tss) + (TSS_ist + ((x) - 1) * 8) ++#define INIT_TSS_IST(x) (TSS_ist + ((x) - 1) * 8)(%r12) + .macro paranoidzeroentry_ist sym do_sym ist + ENTRY(\sym) + INTR_FRAME +@@ -1104,14 +1438,30 @@ ENTRY(\sym) + CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 + call save_paranoid + TRACE_IRQS_OFF ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ testb $3, CS(%rsp) ++ jnz 1f ++ pax_enter_kernel ++ jmp 2f ++1: pax_enter_kernel_user ++2: ++#else ++ pax_enter_kernel ++#endif + movq %rsp,%rdi /* pt_regs pointer */ + xorl %esi,%esi /* no error code */ ++#ifdef CONFIG_SMP ++ imul $TSS_size, PER_CPU_VAR(cpu_number), %r12d ++ lea init_tss(%r12), %r12 ++#else ++ lea init_tss(%rip), %r12 ++#endif + subq $EXCEPTION_STKSZ, INIT_TSS_IST(\ist) + call \do_sym + addq $EXCEPTION_STKSZ, INIT_TSS_IST(\ist) + jmp paranoid_exit /* %ebx: no swapgs flag */ + CFI_ENDPROC +-END(\sym) ++ENDPROC(\sym) + .endm + + .macro errorentry sym do_sym +@@ -1122,13 +1472,23 @@ ENTRY(\sym) + CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15 + call error_entry + DEFAULT_FRAME 0 ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ testb $3, CS(%rsp) ++ jnz 1f ++ pax_enter_kernel ++ jmp 2f ++1: pax_enter_kernel_user ++2: ++#else ++ pax_enter_kernel ++#endif + movq %rsp,%rdi /* pt_regs pointer */ + movq ORIG_RAX(%rsp),%rsi /* get error code */ + movq $-1,ORIG_RAX(%rsp) /* no syscall to restart */ + call \do_sym + jmp error_exit /* %ebx: no swapgs flag */ + CFI_ENDPROC +-END(\sym) ++ENDPROC(\sym) + .endm + + /* error code is on the stack already */ +@@ -1141,13 +1501,23 @@ ENTRY(\sym) + call save_paranoid + DEFAULT_FRAME 0 + TRACE_IRQS_OFF ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ testb $3, CS(%rsp) ++ jnz 1f ++ pax_enter_kernel ++ jmp 2f ++1: pax_enter_kernel_user ++2: ++#else ++ pax_enter_kernel ++#endif + movq %rsp,%rdi /* pt_regs pointer */ + movq ORIG_RAX(%rsp),%rsi /* get error code */ + movq $-1,ORIG_RAX(%rsp) /* no syscall to restart */ + call \do_sym + jmp paranoid_exit /* %ebx: no swapgs flag */ + CFI_ENDPROC +-END(\sym) ++ENDPROC(\sym) + .endm + + zeroentry divide_error do_divide_error +@@ -1177,9 +1547,10 @@ gs_change: + 2: mfence /* workaround */ + SWAPGS + popfq_cfi ++ pax_force_retaddr + ret + CFI_ENDPROC +-END(native_load_gs_index) ++ENDPROC(native_load_gs_index) + + .section __ex_table,"a" + .align 8 +@@ -1201,13 +1572,14 @@ ENTRY(kernel_thread_helper) + * Here we are in the child and the registers are set as they were + * at kernel_thread() invocation in the parent. + */ ++ pax_force_fptr %rsi + call *%rsi + # exit + mov %eax, %edi + call do_exit + ud2 # padding for call trace + CFI_ENDPROC +-END(kernel_thread_helper) ++ENDPROC(kernel_thread_helper) + + /* + * execve(). This function needs to use IRET, not SYSRET, to set up all state properly. +@@ -1234,11 +1606,11 @@ ENTRY(kernel_execve) + RESTORE_REST + testq %rax,%rax + je int_ret_from_sys_call +- RESTORE_ARGS + UNFAKE_STACK_FRAME ++ pax_force_retaddr + ret + CFI_ENDPROC +-END(kernel_execve) ++ENDPROC(kernel_execve) + + /* Call softirq on interrupt stack. Interrupts are off. */ + ENTRY(call_softirq) +@@ -1256,9 +1628,10 @@ ENTRY(call_softirq) + CFI_DEF_CFA_REGISTER rsp + CFI_ADJUST_CFA_OFFSET -8 + decl PER_CPU_VAR(irq_count) ++ pax_force_retaddr + ret + CFI_ENDPROC +-END(call_softirq) ++ENDPROC(call_softirq) + + #ifdef CONFIG_XEN + zeroentry xen_hypervisor_callback xen_do_hypervisor_callback +@@ -1296,7 +1669,7 @@ ENTRY(xen_do_hypervisor_callback) # do_hypervisor_callback(struct *pt_regs) + decl PER_CPU_VAR(irq_count) + jmp error_exit + CFI_ENDPROC +-END(xen_do_hypervisor_callback) ++ENDPROC(xen_do_hypervisor_callback) + + /* + * Hypervisor uses this for application faults while it executes. +@@ -1355,7 +1728,7 @@ ENTRY(xen_failsafe_callback) + SAVE_ALL + jmp error_exit + CFI_ENDPROC +-END(xen_failsafe_callback) ++ENDPROC(xen_failsafe_callback) + + apicinterrupt XEN_HVM_EVTCHN_CALLBACK \ + xen_hvm_callback_vector xen_evtchn_do_upcall +@@ -1404,16 +1777,31 @@ ENTRY(paranoid_exit) + TRACE_IRQS_OFF + testl %ebx,%ebx /* swapgs needed? */ + jnz paranoid_restore +- testl $3,CS(%rsp) ++ testb $3,CS(%rsp) + jnz paranoid_userspace ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ pax_exit_kernel ++ TRACE_IRQS_IRETQ 0 ++ SWAPGS_UNSAFE_STACK ++ RESTORE_ALL 8 ++ pax_force_retaddr_bts ++ jmp irq_return ++#endif + paranoid_swapgs: ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ pax_exit_kernel_user ++#else ++ pax_exit_kernel ++#endif + TRACE_IRQS_IRETQ 0 + SWAPGS_UNSAFE_STACK + RESTORE_ALL 8 + jmp irq_return + paranoid_restore: ++ pax_exit_kernel + TRACE_IRQS_IRETQ 0 + RESTORE_ALL 8 ++ pax_force_retaddr_bts + jmp irq_return + paranoid_userspace: + GET_THREAD_INFO(%rcx) +@@ -1442,7 +1830,7 @@ paranoid_schedule: + TRACE_IRQS_OFF + jmp paranoid_userspace + CFI_ENDPROC +-END(paranoid_exit) ++ENDPROC(paranoid_exit) + + /* + * Exception entry point. This expects an error code/orig_rax on the stack. +@@ -1469,12 +1857,13 @@ ENTRY(error_entry) + movq_cfi r14, R14+8 + movq_cfi r15, R15+8 + xorl %ebx,%ebx +- testl $3,CS+8(%rsp) ++ testb $3,CS+8(%rsp) + je error_kernelspace + error_swapgs: + SWAPGS + error_sti: + TRACE_IRQS_OFF ++ pax_force_retaddr_bts + ret + + /* +@@ -1501,7 +1890,7 @@ bstep_iret: + movq %rcx,RIP+8(%rsp) + jmp error_swapgs + CFI_ENDPROC +-END(error_entry) ++ENDPROC(error_entry) + + + /* ebx: no swapgs flag (1: don't need swapgs, 0: need it) */ +@@ -1521,7 +1910,7 @@ ENTRY(error_exit) + jnz retint_careful + jmp retint_swapgs + CFI_ENDPROC +-END(error_exit) ++ENDPROC(error_exit) + + /* + * Test if a given stack is an NMI stack or not. +@@ -1579,9 +1968,11 @@ ENTRY(nmi) + * If %cs was not the kernel segment, then the NMI triggered in user + * space, which means it is definitely not nested. + */ ++ cmpl $__KERNEXEC_KERNEL_CS, 16(%rsp) ++ je 1f + cmpl $__KERNEL_CS, 16(%rsp) + jne first_nmi +- ++1: + /* + * Check the special variable on the stack to see if NMIs are + * executing. +@@ -1728,6 +2119,16 @@ end_repeat_nmi: + */ + call save_paranoid + DEFAULT_FRAME 0 ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ testb $3, CS(%rsp) ++ jnz 1f ++ pax_enter_kernel ++ jmp 2f ++1: pax_enter_kernel_user ++2: ++#else ++ pax_enter_kernel ++#endif + /* paranoidentry do_nmi, 0; without TRACE_IRQS_OFF */ + movq %rsp,%rdi + movq $-1,%rsi +@@ -1735,21 +2136,32 @@ end_repeat_nmi: + testl %ebx,%ebx /* swapgs needed? */ + jnz nmi_restore + nmi_swapgs: ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ pax_exit_kernel_user ++#else ++ pax_exit_kernel ++#endif + SWAPGS_UNSAFE_STACK ++ RESTORE_ALL 8 ++ /* Clear the NMI executing stack variable */ ++ movq $0, 10*8(%rsp) ++ jmp irq_return + nmi_restore: ++ pax_exit_kernel + RESTORE_ALL 8 ++ pax_force_retaddr_bts + /* Clear the NMI executing stack variable */ + movq $0, 10*8(%rsp) + jmp irq_return + CFI_ENDPROC +-END(nmi) ++ENDPROC(nmi) + + ENTRY(ignore_sysret) + CFI_STARTPROC + mov $-ENOSYS,%eax + sysret + CFI_ENDPROC +-END(ignore_sysret) ++ENDPROC(ignore_sysret) + + /* + * End of kprobes section +diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c +index c9a281f..ce2f317 100644 +--- a/arch/x86/kernel/ftrace.c ++++ b/arch/x86/kernel/ftrace.c +@@ -126,7 +126,7 @@ static void *mod_code_ip; /* holds the IP to write to */ + static const void *mod_code_newcode; /* holds the text to write to the IP */ + + static unsigned nmi_wait_count; +-static atomic_t nmi_update_count = ATOMIC_INIT(0); ++static atomic_unchecked_t nmi_update_count = ATOMIC_INIT(0); + + int ftrace_arch_read_dyn_info(char *buf, int size) + { +@@ -134,7 +134,7 @@ int ftrace_arch_read_dyn_info(char *buf, int size) + + r = snprintf(buf, size, "%u %u", + nmi_wait_count, +- atomic_read(&nmi_update_count)); ++ atomic_read_unchecked(&nmi_update_count)); + return r; + } + +@@ -177,8 +177,10 @@ void ftrace_nmi_enter(void) + + if (atomic_inc_return(&nmi_running) & MOD_CODE_WRITE_FLAG) { + smp_rmb(); ++ pax_open_kernel(); + ftrace_mod_code(); +- atomic_inc(&nmi_update_count); ++ pax_close_kernel(); ++ atomic_inc_unchecked(&nmi_update_count); + } + /* Must have previous changes seen before executions */ + smp_mb(); +@@ -271,6 +273,8 @@ ftrace_modify_code(unsigned long ip, unsigned const char *old_code, + { + unsigned char replaced[MCOUNT_INSN_SIZE]; + ++ ip = ktla_ktva(ip); ++ + /* + * Note: Due to modules and __init, code can + * disappear and change, we need to protect against faulting +@@ -327,7 +331,7 @@ int ftrace_update_ftrace_func(ftrace_func_t func) + unsigned char old[MCOUNT_INSN_SIZE], *new; + int ret; + +- memcpy(old, &ftrace_call, MCOUNT_INSN_SIZE); ++ memcpy(old, (void *)ktla_ktva((unsigned long)ftrace_call), MCOUNT_INSN_SIZE); + new = ftrace_call_replace(ip, (unsigned long)func); + ret = ftrace_modify_code(ip, old, new); + +@@ -353,6 +357,8 @@ static int ftrace_mod_jmp(unsigned long ip, + { + unsigned char code[MCOUNT_INSN_SIZE]; + ++ ip = ktla_ktva(ip); ++ + if (probe_kernel_read(code, (void *)ip, MCOUNT_INSN_SIZE)) + return -EFAULT; + +diff --git a/arch/x86/kernel/head32.c b/arch/x86/kernel/head32.c +index 51ff186..9e77418 100644 +--- a/arch/x86/kernel/head32.c ++++ b/arch/x86/kernel/head32.c +@@ -19,6 +19,7 @@ + #include <asm/io_apic.h> + #include <asm/bios_ebda.h> + #include <asm/tlbflush.h> ++#include <asm/boot.h> + + static void __init i386_default_early_setup(void) + { +@@ -31,8 +32,7 @@ static void __init i386_default_early_setup(void) + + void __init i386_start_kernel(void) + { +- memblock_reserve(__pa_symbol(&_text), +- __pa_symbol(&__bss_stop) - __pa_symbol(&_text)); ++ memblock_reserve(LOAD_PHYSICAL_ADDR, __pa_symbol(&__bss_stop) - LOAD_PHYSICAL_ADDR); + + #ifdef CONFIG_BLK_DEV_INITRD + /* Reserve INITRD */ +diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S +index ce0be7c..c41476e 100644 +--- a/arch/x86/kernel/head_32.S ++++ b/arch/x86/kernel/head_32.S +@@ -25,6 +25,12 @@ + /* Physical address */ + #define pa(X) ((X) - __PAGE_OFFSET) + ++#ifdef CONFIG_PAX_KERNEXEC ++#define ta(X) (X) ++#else ++#define ta(X) ((X) - __PAGE_OFFSET) ++#endif ++ + /* + * References to members of the new_cpu_data structure. + */ +@@ -54,11 +60,7 @@ + * and small than max_low_pfn, otherwise will waste some page table entries + */ + +-#if PTRS_PER_PMD > 1 +-#define PAGE_TABLE_SIZE(pages) (((pages) / PTRS_PER_PMD) + PTRS_PER_PGD) +-#else +-#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PGD) +-#endif ++#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PTE) + + /* Number of possible pages in the lowmem region */ + LOWMEM_PAGES = (((1<<32) - __PAGE_OFFSET) >> PAGE_SHIFT) +@@ -77,6 +79,12 @@ INIT_MAP_SIZE = PAGE_TABLE_SIZE(KERNEL_PAGES) * PAGE_SIZE + RESERVE_BRK(pagetables, INIT_MAP_SIZE) + + /* ++ * Real beginning of normal "text" segment ++ */ ++ENTRY(stext) ++ENTRY(_stext) ++ ++/* + * 32-bit kernel entrypoint; only used by the boot CPU. On entry, + * %esi points to the real-mode code as a 32-bit pointer. + * CS and DS must be 4 GB flat segments, but we don't depend on +@@ -84,6 +92,13 @@ RESERVE_BRK(pagetables, INIT_MAP_SIZE) + * can. + */ + __HEAD ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ jmp startup_32 ++/* PaX: fill first page in .text with int3 to catch NULL derefs in kernel mode */ ++.fill PAGE_SIZE-5,1,0xcc ++#endif ++ + ENTRY(startup_32) + movl pa(stack_start),%ecx + +@@ -105,6 +120,57 @@ ENTRY(startup_32) + 2: + leal -__PAGE_OFFSET(%ecx),%esp + ++#ifdef CONFIG_SMP ++ movl $pa(cpu_gdt_table),%edi ++ movl $__per_cpu_load,%eax ++ movw %ax,__KERNEL_PERCPU + 2(%edi) ++ rorl $16,%eax ++ movb %al,__KERNEL_PERCPU + 4(%edi) ++ movb %ah,__KERNEL_PERCPU + 7(%edi) ++ movl $__per_cpu_end - 1,%eax ++ subl $__per_cpu_start,%eax ++ movw %ax,__KERNEL_PERCPU + 0(%edi) ++#endif ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ movl $NR_CPUS,%ecx ++ movl $pa(cpu_gdt_table),%edi ++1: ++ movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c09700),GDT_ENTRY_KERNEL_DS * 8 + 4(%edi) ++ movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c0fb00),GDT_ENTRY_DEFAULT_USER_CS * 8 + 4(%edi) ++ movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c0f300),GDT_ENTRY_DEFAULT_USER_DS * 8 + 4(%edi) ++ addl $PAGE_SIZE_asm,%edi ++ loop 1b ++#endif ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ movl $pa(boot_gdt),%edi ++ movl $__LOAD_PHYSICAL_ADDR,%eax ++ movw %ax,__BOOT_CS + 2(%edi) ++ rorl $16,%eax ++ movb %al,__BOOT_CS + 4(%edi) ++ movb %ah,__BOOT_CS + 7(%edi) ++ rorl $16,%eax ++ ++ ljmp $(__BOOT_CS),$1f ++1: ++ ++ movl $NR_CPUS,%ecx ++ movl $pa(cpu_gdt_table),%edi ++ addl $__PAGE_OFFSET,%eax ++1: ++ movw %ax,__KERNEL_CS + 2(%edi) ++ movw %ax,__KERNEXEC_KERNEL_CS + 2(%edi) ++ rorl $16,%eax ++ movb %al,__KERNEL_CS + 4(%edi) ++ movb %al,__KERNEXEC_KERNEL_CS + 4(%edi) ++ movb %ah,__KERNEL_CS + 7(%edi) ++ movb %ah,__KERNEXEC_KERNEL_CS + 7(%edi) ++ rorl $16,%eax ++ addl $PAGE_SIZE_asm,%edi ++ loop 1b ++#endif ++ + /* + * Clear BSS first so that there are no surprises... + */ +@@ -195,8 +261,11 @@ ENTRY(startup_32) + movl %eax, pa(max_pfn_mapped) + + /* Do early initialization of the fixmap area */ +- movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,%eax +- movl %eax,pa(initial_pg_pmd+0x1000*KPMDS-8) ++#ifdef CONFIG_COMPAT_VDSO ++ movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR+_PAGE_USER,pa(initial_pg_pmd+0x1000*KPMDS-8) ++#else ++ movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,pa(initial_pg_pmd+0x1000*KPMDS-8) ++#endif + #else /* Not PAE */ + + page_pde_offset = (__PAGE_OFFSET >> 20); +@@ -226,8 +295,11 @@ page_pde_offset = (__PAGE_OFFSET >> 20); + movl %eax, pa(max_pfn_mapped) + + /* Do early initialization of the fixmap area */ +- movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,%eax +- movl %eax,pa(initial_page_table+0xffc) ++#ifdef CONFIG_COMPAT_VDSO ++ movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR+_PAGE_USER,pa(initial_page_table+0xffc) ++#else ++ movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,pa(initial_page_table+0xffc) ++#endif + #endif + + #ifdef CONFIG_PARAVIRT +@@ -241,9 +313,7 @@ page_pde_offset = (__PAGE_OFFSET >> 20); + cmpl $num_subarch_entries, %eax + jae bad_subarch + +- movl pa(subarch_entries)(,%eax,4), %eax +- subl $__PAGE_OFFSET, %eax +- jmp *%eax ++ jmp *pa(subarch_entries)(,%eax,4) + + bad_subarch: + WEAK(lguest_entry) +@@ -255,10 +325,10 @@ WEAK(xen_entry) + __INITDATA + + subarch_entries: +- .long default_entry /* normal x86/PC */ +- .long lguest_entry /* lguest hypervisor */ +- .long xen_entry /* Xen hypervisor */ +- .long default_entry /* Moorestown MID */ ++ .long ta(default_entry) /* normal x86/PC */ ++ .long ta(lguest_entry) /* lguest hypervisor */ ++ .long ta(xen_entry) /* Xen hypervisor */ ++ .long ta(default_entry) /* Moorestown MID */ + num_subarch_entries = (. - subarch_entries) / 4 + .previous + #else +@@ -312,6 +382,7 @@ default_entry: + orl %edx,%eax + movl %eax,%cr4 + ++#ifdef CONFIG_X86_PAE + testb $X86_CR4_PAE, %al # check if PAE is enabled + jz 6f + +@@ -340,6 +411,9 @@ default_entry: + /* Make changes effective */ + wrmsr + ++ btsl $_PAGE_BIT_NX-32,pa(__supported_pte_mask+4) ++#endif ++ + 6: + + /* +@@ -443,7 +517,7 @@ is386: movl $2,%ecx # set MP + 1: movl $(__KERNEL_DS),%eax # reload all the segment registers + movl %eax,%ss # after changing gdt. + +- movl $(__USER_DS),%eax # DS/ES contains default USER segment ++# movl $(__KERNEL_DS),%eax # DS/ES contains default KERNEL segment + movl %eax,%ds + movl %eax,%es + +@@ -457,15 +531,22 @@ is386: movl $2,%ecx # set MP + */ + cmpb $0,ready + jne 1f +- movl $gdt_page,%eax ++ movl $cpu_gdt_table,%eax + movl $stack_canary,%ecx ++#ifdef CONFIG_SMP ++ addl $__per_cpu_load,%ecx ++#endif + movw %cx, 8 * GDT_ENTRY_STACK_CANARY + 2(%eax) + shrl $16, %ecx + movb %cl, 8 * GDT_ENTRY_STACK_CANARY + 4(%eax) + movb %ch, 8 * GDT_ENTRY_STACK_CANARY + 7(%eax) + 1: +-#endif + movl $(__KERNEL_STACK_CANARY),%eax ++#elif defined(CONFIG_PAX_MEMORY_UDEREF) ++ movl $(__USER_DS),%eax ++#else ++ xorl %eax,%eax ++#endif + movl %eax,%gs + + xorl %eax,%eax # Clear LDT +@@ -558,22 +639,22 @@ early_page_fault: + jmp early_fault + + early_fault: +- cld + #ifdef CONFIG_PRINTK ++ cmpl $1,%ss:early_recursion_flag ++ je hlt_loop ++ incl %ss:early_recursion_flag ++ cld + pusha + movl $(__KERNEL_DS),%eax + movl %eax,%ds + movl %eax,%es +- cmpl $2,early_recursion_flag +- je hlt_loop +- incl early_recursion_flag + movl %cr2,%eax + pushl %eax + pushl %edx /* trapno */ + pushl $fault_msg + call printk ++; call dump_stack + #endif +- call dump_stack + hlt_loop: + hlt + jmp hlt_loop +@@ -581,8 +662,11 @@ hlt_loop: + /* This is the default interrupt "handler" :-) */ + ALIGN + ignore_int: +- cld + #ifdef CONFIG_PRINTK ++ cmpl $2,%ss:early_recursion_flag ++ je hlt_loop ++ incl %ss:early_recursion_flag ++ cld + pushl %eax + pushl %ecx + pushl %edx +@@ -591,9 +675,6 @@ ignore_int: + movl $(__KERNEL_DS),%eax + movl %eax,%ds + movl %eax,%es +- cmpl $2,early_recursion_flag +- je hlt_loop +- incl early_recursion_flag + pushl 16(%esp) + pushl 24(%esp) + pushl 32(%esp) +@@ -622,29 +703,43 @@ ENTRY(initial_code) + /* + * BSS section + */ +-__PAGE_ALIGNED_BSS +- .align PAGE_SIZE + #ifdef CONFIG_X86_PAE ++.section .initial_pg_pmd,"a",@progbits + initial_pg_pmd: + .fill 1024*KPMDS,4,0 + #else ++.section .initial_page_table,"a",@progbits + ENTRY(initial_page_table) + .fill 1024,4,0 + #endif ++.section .initial_pg_fixmap,"a",@progbits + initial_pg_fixmap: + .fill 1024,4,0 ++.section .empty_zero_page,"a",@progbits + ENTRY(empty_zero_page) + .fill 4096,1,0 ++.section .swapper_pg_dir,"a",@progbits + ENTRY(swapper_pg_dir) ++#ifdef CONFIG_X86_PAE ++ .fill 4,8,0 ++#else + .fill 1024,4,0 ++#endif ++ ++/* ++ * The IDT has to be page-aligned to simplify the Pentium ++ * F0 0F bug workaround.. We have a special link segment ++ * for this. ++ */ ++.section .idt,"a",@progbits ++ENTRY(idt_table) ++ .fill 256,8,0 + + /* + * This starts the data section. + */ + #ifdef CONFIG_X86_PAE +-__PAGE_ALIGNED_DATA +- /* Page-aligned for the benefit of paravirt? */ +- .align PAGE_SIZE ++.section .initial_page_table,"a",@progbits + ENTRY(initial_page_table) + .long pa(initial_pg_pmd+PGD_IDENT_ATTR),0 /* low identity map */ + # if KPMDS == 3 +@@ -663,18 +758,27 @@ ENTRY(initial_page_table) + # error "Kernel PMDs should be 1, 2 or 3" + # endif + .align PAGE_SIZE /* needs to be page-sized too */ ++ ++#ifdef CONFIG_PAX_PER_CPU_PGD ++ENTRY(cpu_pgd) ++ .rept NR_CPUS ++ .fill 4,8,0 ++ .endr ++#endif ++ + #endif + + .data + .balign 4 + ENTRY(stack_start) +- .long init_thread_union+THREAD_SIZE ++ .long init_thread_union+THREAD_SIZE-8 + ++ready: .byte 0 ++ ++.section .rodata,"a",@progbits + early_recursion_flag: + .long 0 + +-ready: .byte 0 +- + int_msg: + .asciz "Unknown interrupt or fault at: %p %p %p\n" + +@@ -707,7 +811,7 @@ fault_msg: + .word 0 # 32 bit align gdt_desc.address + boot_gdt_descr: + .word __BOOT_DS+7 +- .long boot_gdt - __PAGE_OFFSET ++ .long pa(boot_gdt) + + .word 0 # 32-bit align idt_desc.address + idt_descr: +@@ -718,7 +822,7 @@ idt_descr: + .word 0 # 32 bit align gdt_desc.address + ENTRY(early_gdt_descr) + .word GDT_ENTRIES*8-1 +- .long gdt_page /* Overwritten for secondary CPUs */ ++ .long cpu_gdt_table /* Overwritten for secondary CPUs */ + + /* + * The boot_gdt must mirror the equivalent in setup.S and is +@@ -727,5 +831,65 @@ ENTRY(early_gdt_descr) + .align L1_CACHE_BYTES + ENTRY(boot_gdt) + .fill GDT_ENTRY_BOOT_CS,8,0 +- .quad 0x00cf9a000000ffff /* kernel 4GB code at 0x00000000 */ +- .quad 0x00cf92000000ffff /* kernel 4GB data at 0x00000000 */ ++ .quad 0x00cf9b000000ffff /* kernel 4GB code at 0x00000000 */ ++ .quad 0x00cf93000000ffff /* kernel 4GB data at 0x00000000 */ ++ ++ .align PAGE_SIZE_asm ++ENTRY(cpu_gdt_table) ++ .rept NR_CPUS ++ .quad 0x0000000000000000 /* NULL descriptor */ ++ .quad 0x0000000000000000 /* 0x0b reserved */ ++ .quad 0x0000000000000000 /* 0x13 reserved */ ++ .quad 0x0000000000000000 /* 0x1b reserved */ ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ .quad 0x00cf9b000000ffff /* 0x20 alternate kernel 4GB code at 0x00000000 */ ++#else ++ .quad 0x0000000000000000 /* 0x20 unused */ ++#endif ++ ++ .quad 0x0000000000000000 /* 0x28 unused */ ++ .quad 0x0000000000000000 /* 0x33 TLS entry 1 */ ++ .quad 0x0000000000000000 /* 0x3b TLS entry 2 */ ++ .quad 0x0000000000000000 /* 0x43 TLS entry 3 */ ++ .quad 0x0000000000000000 /* 0x4b reserved */ ++ .quad 0x0000000000000000 /* 0x53 reserved */ ++ .quad 0x0000000000000000 /* 0x5b reserved */ ++ ++ .quad 0x00cf9b000000ffff /* 0x60 kernel 4GB code at 0x00000000 */ ++ .quad 0x00cf93000000ffff /* 0x68 kernel 4GB data at 0x00000000 */ ++ .quad 0x00cffb000000ffff /* 0x73 user 4GB code at 0x00000000 */ ++ .quad 0x00cff3000000ffff /* 0x7b user 4GB data at 0x00000000 */ ++ ++ .quad 0x0000000000000000 /* 0x80 TSS descriptor */ ++ .quad 0x0000000000000000 /* 0x88 LDT descriptor */ ++ ++ /* ++ * Segments used for calling PnP BIOS have byte granularity. ++ * The code segments and data segments have fixed 64k limits, ++ * the transfer segment sizes are set at run time. ++ */ ++ .quad 0x00409b000000ffff /* 0x90 32-bit code */ ++ .quad 0x00009b000000ffff /* 0x98 16-bit code */ ++ .quad 0x000093000000ffff /* 0xa0 16-bit data */ ++ .quad 0x0000930000000000 /* 0xa8 16-bit data */ ++ .quad 0x0000930000000000 /* 0xb0 16-bit data */ ++ ++ /* ++ * The APM segments have byte granularity and their bases ++ * are set at run time. All have 64k limits. ++ */ ++ .quad 0x00409b000000ffff /* 0xb8 APM CS code */ ++ .quad 0x00009b000000ffff /* 0xc0 APM CS 16 code (16 bit) */ ++ .quad 0x004093000000ffff /* 0xc8 APM DS data */ ++ ++ .quad 0x00c0930000000000 /* 0xd0 - ESPFIX SS */ ++ .quad 0x0040930000000000 /* 0xd8 - PERCPU */ ++ .quad 0x0040910000000017 /* 0xe0 - STACK_CANARY */ ++ .quad 0x0000000000000000 /* 0xe8 - PCIBIOS_CS */ ++ .quad 0x0000000000000000 /* 0xf0 - PCIBIOS_DS */ ++ .quad 0x0000000000000000 /* 0xf8 - GDT entry 31: double-fault TSS */ ++ ++ /* Be sure this is zeroed to avoid false validations in Xen */ ++ .fill PAGE_SIZE_asm - GDT_SIZE,1,0 ++ .endr +diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S +index 40f4eb3..6d24d9d 100644 +--- a/arch/x86/kernel/head_64.S ++++ b/arch/x86/kernel/head_64.S +@@ -19,6 +19,8 @@ + #include <asm/cache.h> + #include <asm/processor-flags.h> + #include <asm/percpu.h> ++#include <asm/cpufeature.h> ++#include <asm/alternative-asm.h> + + #ifdef CONFIG_PARAVIRT + #include <asm/asm-offsets.h> +@@ -38,6 +40,12 @@ L4_PAGE_OFFSET = pgd_index(__PAGE_OFFSET) + L3_PAGE_OFFSET = pud_index(__PAGE_OFFSET) + L4_START_KERNEL = pgd_index(__START_KERNEL_map) + L3_START_KERNEL = pud_index(__START_KERNEL_map) ++L4_VMALLOC_START = pgd_index(VMALLOC_START) ++L3_VMALLOC_START = pud_index(VMALLOC_START) ++L4_VMALLOC_END = pgd_index(VMALLOC_END) ++L3_VMALLOC_END = pud_index(VMALLOC_END) ++L4_VMEMMAP_START = pgd_index(VMEMMAP_START) ++L3_VMEMMAP_START = pud_index(VMEMMAP_START) + + .text + __HEAD +@@ -85,35 +93,23 @@ startup_64: + */ + addq %rbp, init_level4_pgt + 0(%rip) + addq %rbp, init_level4_pgt + (L4_PAGE_OFFSET*8)(%rip) ++ addq %rbp, init_level4_pgt + (L4_VMALLOC_START*8)(%rip) ++ addq %rbp, init_level4_pgt + (L4_VMALLOC_END*8)(%rip) ++ addq %rbp, init_level4_pgt + (L4_VMEMMAP_START*8)(%rip) + addq %rbp, init_level4_pgt + (L4_START_KERNEL*8)(%rip) + + addq %rbp, level3_ident_pgt + 0(%rip) ++#ifndef CONFIG_XEN ++ addq %rbp, level3_ident_pgt + 8(%rip) ++#endif + +- addq %rbp, level3_kernel_pgt + (510*8)(%rip) +- addq %rbp, level3_kernel_pgt + (511*8)(%rip) ++ addq %rbp, level3_vmemmap_pgt + (L3_VMEMMAP_START*8)(%rip) ++ ++ addq %rbp, level3_kernel_pgt + (L3_START_KERNEL*8)(%rip) ++ addq %rbp, level3_kernel_pgt + (L3_START_KERNEL*8+8)(%rip) + + addq %rbp, level2_fixmap_pgt + (506*8)(%rip) +- +- /* Add an Identity mapping if I am above 1G */ +- leaq _text(%rip), %rdi +- andq $PMD_PAGE_MASK, %rdi +- +- movq %rdi, %rax +- shrq $PUD_SHIFT, %rax +- andq $(PTRS_PER_PUD - 1), %rax +- jz ident_complete +- +- leaq (level2_spare_pgt - __START_KERNEL_map + _KERNPG_TABLE)(%rbp), %rdx +- leaq level3_ident_pgt(%rip), %rbx +- movq %rdx, 0(%rbx, %rax, 8) +- +- movq %rdi, %rax +- shrq $PMD_SHIFT, %rax +- andq $(PTRS_PER_PMD - 1), %rax +- leaq __PAGE_KERNEL_IDENT_LARGE_EXEC(%rdi), %rdx +- leaq level2_spare_pgt(%rip), %rbx +- movq %rdx, 0(%rbx, %rax, 8) +-ident_complete: ++ addq %rbp, level2_fixmap_pgt + (507*8)(%rip) + + /* + * Fixup the kernel text+data virtual addresses. Note that +@@ -160,8 +156,8 @@ ENTRY(secondary_startup_64) + * after the boot processor executes this code. + */ + +- /* Enable PAE mode and PGE */ +- movl $(X86_CR4_PAE | X86_CR4_PGE), %eax ++ /* Enable PAE mode and PSE/PGE */ ++ movl $(X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE), %eax + movq %rax, %cr4 + + /* Setup early boot stage 4 level pagetables. */ +@@ -183,9 +179,17 @@ ENTRY(secondary_startup_64) + movl $MSR_EFER, %ecx + rdmsr + btsl $_EFER_SCE, %eax /* Enable System Call */ +- btl $20,%edi /* No Execute supported? */ ++ btl $(X86_FEATURE_NX & 31),%edi /* No Execute supported? */ + jnc 1f + btsl $_EFER_NX, %eax ++ leaq init_level4_pgt(%rip), %rdi ++#ifndef CONFIG_EFI ++ btsq $_PAGE_BIT_NX, 8*L4_PAGE_OFFSET(%rdi) ++#endif ++ btsq $_PAGE_BIT_NX, 8*L4_VMALLOC_START(%rdi) ++ btsq $_PAGE_BIT_NX, 8*L4_VMALLOC_END(%rdi) ++ btsq $_PAGE_BIT_NX, 8*L4_VMEMMAP_START(%rdi) ++ btsq $_PAGE_BIT_NX, __supported_pte_mask(%rip) + 1: wrmsr /* Make changes effective */ + + /* Setup cr0 */ +@@ -247,6 +251,7 @@ ENTRY(secondary_startup_64) + * jump. In addition we need to ensure %cs is set so we make this + * a far return. + */ ++ pax_set_fptr_mask + movq initial_code(%rip),%rax + pushq $0 # fake return address to stop unwinder + pushq $__KERNEL_CS # set correct cs +@@ -269,7 +274,7 @@ ENTRY(secondary_startup_64) + bad_address: + jmp bad_address + +- .section ".init.text","ax" ++ __INIT + #ifdef CONFIG_EARLY_PRINTK + .globl early_idt_handlers + early_idt_handlers: +@@ -314,18 +319,23 @@ ENTRY(early_idt_handler) + #endif /* EARLY_PRINTK */ + 1: hlt + jmp 1b ++ .previous + + #ifdef CONFIG_EARLY_PRINTK ++ __INITDATA + early_recursion_flag: + .long 0 ++ .previous + ++ .section .rodata,"a",@progbits + early_idt_msg: + .asciz "PANIC: early exception %02lx rip %lx:%lx error %lx cr2 %lx\n" + early_idt_ripmsg: + .asciz "RIP %s\n" ++ .previous + #endif /* CONFIG_EARLY_PRINTK */ +- .previous + ++ .section .rodata,"a",@progbits + #define NEXT_PAGE(name) \ + .balign PAGE_SIZE; \ + ENTRY(name) +@@ -338,7 +348,6 @@ ENTRY(name) + i = i + 1 ; \ + .endr + +- .data + /* + * This default setting generates an ident mapping at address 0x100000 + * and a mapping for the kernel that precisely maps virtual address +@@ -349,13 +358,41 @@ NEXT_PAGE(init_level4_pgt) + .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE + .org init_level4_pgt + L4_PAGE_OFFSET*8, 0 + .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE ++ .org init_level4_pgt + L4_VMALLOC_START*8, 0 ++ .quad level3_vmalloc_start_pgt - __START_KERNEL_map + _KERNPG_TABLE ++ .org init_level4_pgt + L4_VMALLOC_END*8, 0 ++ .quad level3_vmalloc_end_pgt - __START_KERNEL_map + _KERNPG_TABLE ++ .org init_level4_pgt + L4_VMEMMAP_START*8, 0 ++ .quad level3_vmemmap_pgt - __START_KERNEL_map + _KERNPG_TABLE + .org init_level4_pgt + L4_START_KERNEL*8, 0 + /* (2^48-(2*1024*1024*1024))/(2^39) = 511 */ + .quad level3_kernel_pgt - __START_KERNEL_map + _PAGE_TABLE + ++#ifdef CONFIG_PAX_PER_CPU_PGD ++NEXT_PAGE(cpu_pgd) ++ .rept NR_CPUS ++ .fill 512,8,0 ++ .endr ++#endif ++ + NEXT_PAGE(level3_ident_pgt) + .quad level2_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE ++#ifdef CONFIG_XEN + .fill 511,8,0 ++#else ++ .quad level2_ident_pgt + PAGE_SIZE - __START_KERNEL_map + _KERNPG_TABLE ++ .fill 510,8,0 ++#endif ++ ++NEXT_PAGE(level3_vmalloc_start_pgt) ++ .fill 512,8,0 ++ ++NEXT_PAGE(level3_vmalloc_end_pgt) ++ .fill 512,8,0 ++ ++NEXT_PAGE(level3_vmemmap_pgt) ++ .fill L3_VMEMMAP_START,8,0 ++ .quad level2_vmemmap_pgt - __START_KERNEL_map + _KERNPG_TABLE + + NEXT_PAGE(level3_kernel_pgt) + .fill L3_START_KERNEL,8,0 +@@ -363,20 +400,23 @@ NEXT_PAGE(level3_kernel_pgt) + .quad level2_kernel_pgt - __START_KERNEL_map + _KERNPG_TABLE + .quad level2_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE + ++NEXT_PAGE(level2_vmemmap_pgt) ++ .fill 512,8,0 ++ + NEXT_PAGE(level2_fixmap_pgt) +- .fill 506,8,0 +- .quad level1_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE +- /* 8MB reserved for vsyscalls + a 2MB hole = 4 + 1 entries */ +- .fill 5,8,0 ++ .fill 507,8,0 ++ .quad level1_vsyscall_pgt - __START_KERNEL_map + _PAGE_TABLE ++ /* 6MB reserved for vsyscalls + a 2MB hole = 3 + 1 entries */ ++ .fill 4,8,0 + +-NEXT_PAGE(level1_fixmap_pgt) ++NEXT_PAGE(level1_vsyscall_pgt) + .fill 512,8,0 + +-NEXT_PAGE(level2_ident_pgt) +- /* Since I easily can, map the first 1G. ++ /* Since I easily can, map the first 2G. + * Don't set NX because code runs from these pages. + */ +- PMDS(0, __PAGE_KERNEL_IDENT_LARGE_EXEC, PTRS_PER_PMD) ++NEXT_PAGE(level2_ident_pgt) ++ PMDS(0, __PAGE_KERNEL_IDENT_LARGE_EXEC, 2*PTRS_PER_PMD) + + NEXT_PAGE(level2_kernel_pgt) + /* +@@ -389,37 +429,59 @@ NEXT_PAGE(level2_kernel_pgt) + * If you want to increase this then increase MODULES_VADDR + * too.) + */ +- PMDS(0, __PAGE_KERNEL_LARGE_EXEC, +- KERNEL_IMAGE_SIZE/PMD_SIZE) +- +-NEXT_PAGE(level2_spare_pgt) +- .fill 512, 8, 0 ++ PMDS(0, __PAGE_KERNEL_LARGE_EXEC, KERNEL_IMAGE_SIZE/PMD_SIZE) + + #undef PMDS + #undef NEXT_PAGE + +- .data ++ .align PAGE_SIZE ++ENTRY(cpu_gdt_table) ++ .rept NR_CPUS ++ .quad 0x0000000000000000 /* NULL descriptor */ ++ .quad 0x00cf9b000000ffff /* __KERNEL32_CS */ ++ .quad 0x00af9b000000ffff /* __KERNEL_CS */ ++ .quad 0x00cf93000000ffff /* __KERNEL_DS */ ++ .quad 0x00cffb000000ffff /* __USER32_CS */ ++ .quad 0x00cff3000000ffff /* __USER_DS, __USER32_DS */ ++ .quad 0x00affb000000ffff /* __USER_CS */ ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ .quad 0x00af9b000000ffff /* __KERNEXEC_KERNEL_CS */ ++#else ++ .quad 0x0 /* unused */ ++#endif ++ ++ .quad 0,0 /* TSS */ ++ .quad 0,0 /* LDT */ ++ .quad 0,0,0 /* three TLS descriptors */ ++ .quad 0x0000f40000000000 /* node/CPU stored in limit */ ++ /* asm/segment.h:GDT_ENTRIES must match this */ ++ ++ /* zero the remaining page */ ++ .fill PAGE_SIZE / 8 - GDT_ENTRIES,8,0 ++ .endr ++ + .align 16 + .globl early_gdt_descr + early_gdt_descr: + .word GDT_ENTRIES*8-1 + early_gdt_descr_base: +- .quad INIT_PER_CPU_VAR(gdt_page) ++ .quad cpu_gdt_table + + ENTRY(phys_base) + /* This must match the first entry in level2_kernel_pgt */ + .quad 0x0000000000000000 + + #include "../../x86/xen/xen-head.S" +- +- .section .bss, "aw", @nobits ++ ++ .section .rodata,"a",@progbits + .align L1_CACHE_BYTES + ENTRY(idt_table) +- .skip IDT_ENTRIES * 16 ++ .fill 512,8,0 + + .align L1_CACHE_BYTES + ENTRY(nmi_idt_table) +- .skip IDT_ENTRIES * 16 ++ .fill 512,8,0 + + __PAGE_ALIGNED_BSS + .align PAGE_SIZE +diff --git a/arch/x86/kernel/i386_ksyms_32.c b/arch/x86/kernel/i386_ksyms_32.c +index 9c3bd4a..e1d9b35 100644 +--- a/arch/x86/kernel/i386_ksyms_32.c ++++ b/arch/x86/kernel/i386_ksyms_32.c +@@ -20,8 +20,12 @@ extern void cmpxchg8b_emu(void); + EXPORT_SYMBOL(cmpxchg8b_emu); + #endif + ++EXPORT_SYMBOL_GPL(cpu_gdt_table); ++ + /* Networking helper routines. */ + EXPORT_SYMBOL(csum_partial_copy_generic); ++EXPORT_SYMBOL(csum_partial_copy_generic_to_user); ++EXPORT_SYMBOL(csum_partial_copy_generic_from_user); + + EXPORT_SYMBOL(__get_user_1); + EXPORT_SYMBOL(__get_user_2); +@@ -36,3 +40,7 @@ EXPORT_SYMBOL(strstr); + + EXPORT_SYMBOL(csum_partial); + EXPORT_SYMBOL(empty_zero_page); ++ ++#ifdef CONFIG_PAX_KERNEXEC ++EXPORT_SYMBOL(__LOAD_PHYSICAL_ADDR); ++#endif +diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c +index 2d6e649..df6e1af 100644 +--- a/arch/x86/kernel/i387.c ++++ b/arch/x86/kernel/i387.c +@@ -59,7 +59,7 @@ static inline bool interrupted_kernel_fpu_idle(void) + static inline bool interrupted_user_mode(void) + { + struct pt_regs *regs = get_irq_regs(); +- return regs && user_mode_vm(regs); ++ return regs && user_mode(regs); + } + + /* +diff --git a/arch/x86/kernel/i8259.c b/arch/x86/kernel/i8259.c +index 36d1853..bf25736 100644 +--- a/arch/x86/kernel/i8259.c ++++ b/arch/x86/kernel/i8259.c +@@ -209,7 +209,7 @@ spurious_8259A_irq: + "spurious 8259A interrupt: IRQ%d.\n", irq); + spurious_irq_mask |= irqmask; + } +- atomic_inc(&irq_err_count); ++ atomic_inc_unchecked(&irq_err_count); + /* + * Theoretically we do not have to handle this IRQ, + * but in Linux this does not cause problems and is +diff --git a/arch/x86/kernel/init_task.c b/arch/x86/kernel/init_task.c +index 43e9ccf..44ccf6f 100644 +--- a/arch/x86/kernel/init_task.c ++++ b/arch/x86/kernel/init_task.c +@@ -20,8 +20,7 @@ static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); + * way process stacks are handled. This is done by having a special + * "init_task" linker map entry.. + */ +-union thread_union init_thread_union __init_task_data = +- { INIT_THREAD_INFO(init_task) }; ++union thread_union init_thread_union __init_task_data; + + /* + * Initial task structure. +@@ -38,5 +37,5 @@ EXPORT_SYMBOL(init_task); + * section. Since TSS's are completely CPU-local, we want them + * on exact cacheline boundaries, to eliminate cacheline ping-pong. + */ +-DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) = INIT_TSS; +- ++struct tss_struct init_tss[NR_CPUS] ____cacheline_internodealigned_in_smp = { [0 ... NR_CPUS-1] = INIT_TSS }; ++EXPORT_SYMBOL(init_tss); +diff --git a/arch/x86/kernel/ioport.c b/arch/x86/kernel/ioport.c +index 8c96897..be66bfa 100644 +--- a/arch/x86/kernel/ioport.c ++++ b/arch/x86/kernel/ioport.c +@@ -6,6 +6,7 @@ + #include <linux/sched.h> + #include <linux/kernel.h> + #include <linux/capability.h> ++#include <linux/security.h> + #include <linux/errno.h> + #include <linux/types.h> + #include <linux/ioport.h> +@@ -28,6 +29,12 @@ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on) + + if ((from + num <= from) || (from + num > IO_BITMAP_BITS)) + return -EINVAL; ++#ifdef CONFIG_GRKERNSEC_IO ++ if (turn_on && grsec_disable_privio) { ++ gr_handle_ioperm(); ++ return -EPERM; ++ } ++#endif + if (turn_on && !capable(CAP_SYS_RAWIO)) + return -EPERM; + +@@ -54,7 +61,7 @@ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on) + * because the ->io_bitmap_max value must match the bitmap + * contents: + */ +- tss = &per_cpu(init_tss, get_cpu()); ++ tss = init_tss + get_cpu(); + + if (turn_on) + bitmap_clear(t->io_bitmap_ptr, from, num); +@@ -102,6 +109,12 @@ long sys_iopl(unsigned int level, struct pt_regs *regs) + return -EINVAL; + /* Trying to gain more privileges? */ + if (level > old) { ++#ifdef CONFIG_GRKERNSEC_IO ++ if (grsec_disable_privio) { ++ gr_handle_iopl(); ++ return -EPERM; ++ } ++#endif + if (!capable(CAP_SYS_RAWIO)) + return -EPERM; + } +diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c +index 3dafc60..aa8e9c4 100644 +--- a/arch/x86/kernel/irq.c ++++ b/arch/x86/kernel/irq.c +@@ -18,7 +18,7 @@ + #include <asm/mce.h> + #include <asm/hw_irq.h> + +-atomic_t irq_err_count; ++atomic_unchecked_t irq_err_count; + + /* Function pointer for generic interrupt vector handling */ + void (*x86_platform_ipi_callback)(void) = NULL; +@@ -121,9 +121,9 @@ int arch_show_interrupts(struct seq_file *p, int prec) + seq_printf(p, "%10u ", per_cpu(mce_poll_count, j)); + seq_printf(p, " Machine check polls\n"); + #endif +- seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count)); ++ seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read_unchecked(&irq_err_count)); + #if defined(CONFIG_X86_IO_APIC) +- seq_printf(p, "%*s: %10u\n", prec, "MIS", atomic_read(&irq_mis_count)); ++ seq_printf(p, "%*s: %10u\n", prec, "MIS", atomic_read_unchecked(&irq_mis_count)); + #endif + return 0; + } +@@ -164,10 +164,10 @@ u64 arch_irq_stat_cpu(unsigned int cpu) + + u64 arch_irq_stat(void) + { +- u64 sum = atomic_read(&irq_err_count); ++ u64 sum = atomic_read_unchecked(&irq_err_count); + + #ifdef CONFIG_X86_IO_APIC +- sum += atomic_read(&irq_mis_count); ++ sum += atomic_read_unchecked(&irq_mis_count); + #endif + return sum; + } +diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c +index 58b7f27..e112d08 100644 +--- a/arch/x86/kernel/irq_32.c ++++ b/arch/x86/kernel/irq_32.c +@@ -39,7 +39,7 @@ static int check_stack_overflow(void) + __asm__ __volatile__("andl %%esp,%0" : + "=r" (sp) : "0" (THREAD_SIZE - 1)); + +- return sp < (sizeof(struct thread_info) + STACK_WARN); ++ return sp < STACK_WARN; + } + + static void print_stack_overflow(void) +@@ -59,8 +59,8 @@ static inline void print_stack_overflow(void) { } + * per-CPU IRQ handling contexts (thread information and stack) + */ + union irq_ctx { +- struct thread_info tinfo; +- u32 stack[THREAD_SIZE/sizeof(u32)]; ++ unsigned long previous_esp; ++ u32 stack[THREAD_SIZE/sizeof(u32)]; + } __attribute__((aligned(THREAD_SIZE))); + + static DEFINE_PER_CPU(union irq_ctx *, hardirq_ctx); +@@ -80,10 +80,9 @@ static void call_on_stack(void *func, void *stack) + static inline int + execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq) + { +- union irq_ctx *curctx, *irqctx; ++ union irq_ctx *irqctx; + u32 *isp, arg1, arg2; + +- curctx = (union irq_ctx *) current_thread_info(); + irqctx = __this_cpu_read(hardirq_ctx); + + /* +@@ -92,16 +91,16 @@ execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq) + * handler) we can't do that and just have to keep using the + * current stack (which is the irq stack already after all) + */ +- if (unlikely(curctx == irqctx)) ++ if (unlikely((void *)current_stack_pointer - (void *)irqctx < THREAD_SIZE)) + return 0; + + /* build the stack frame on the IRQ stack */ +- isp = (u32 *) ((char *)irqctx + sizeof(*irqctx)); +- irqctx->tinfo.task = curctx->tinfo.task; +- irqctx->tinfo.previous_esp = current_stack_pointer; ++ isp = (u32 *) ((char *)irqctx + sizeof(*irqctx) - 8); ++ irqctx->previous_esp = current_stack_pointer; + +- /* Copy the preempt_count so that the [soft]irq checks work. */ +- irqctx->tinfo.preempt_count = curctx->tinfo.preempt_count; ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ __set_fs(MAKE_MM_SEG(0)); ++#endif + + if (unlikely(overflow)) + call_on_stack(print_stack_overflow, isp); +@@ -113,6 +112,11 @@ execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq) + : "0" (irq), "1" (desc), "2" (isp), + "D" (desc->handle_irq) + : "memory", "cc", "ecx"); ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ __set_fs(current_thread_info()->addr_limit); ++#endif ++ + return 1; + } + +@@ -121,29 +125,11 @@ execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq) + */ + void __cpuinit irq_ctx_init(int cpu) + { +- union irq_ctx *irqctx; +- + if (per_cpu(hardirq_ctx, cpu)) + return; + +- irqctx = page_address(alloc_pages_node(cpu_to_node(cpu), +- THREAD_FLAGS, +- THREAD_ORDER)); +- memset(&irqctx->tinfo, 0, sizeof(struct thread_info)); +- irqctx->tinfo.cpu = cpu; +- irqctx->tinfo.preempt_count = HARDIRQ_OFFSET; +- irqctx->tinfo.addr_limit = MAKE_MM_SEG(0); +- +- per_cpu(hardirq_ctx, cpu) = irqctx; +- +- irqctx = page_address(alloc_pages_node(cpu_to_node(cpu), +- THREAD_FLAGS, +- THREAD_ORDER)); +- memset(&irqctx->tinfo, 0, sizeof(struct thread_info)); +- irqctx->tinfo.cpu = cpu; +- irqctx->tinfo.addr_limit = MAKE_MM_SEG(0); +- +- per_cpu(softirq_ctx, cpu) = irqctx; ++ per_cpu(hardirq_ctx, cpu) = page_address(alloc_pages_node(cpu_to_node(cpu), THREAD_FLAGS, THREAD_ORDER)); ++ per_cpu(softirq_ctx, cpu) = page_address(alloc_pages_node(cpu_to_node(cpu), THREAD_FLAGS, THREAD_ORDER)); + + printk(KERN_DEBUG "CPU %u irqstacks, hard=%p soft=%p\n", + cpu, per_cpu(hardirq_ctx, cpu), per_cpu(softirq_ctx, cpu)); +@@ -152,7 +138,6 @@ void __cpuinit irq_ctx_init(int cpu) + asmlinkage void do_softirq(void) + { + unsigned long flags; +- struct thread_info *curctx; + union irq_ctx *irqctx; + u32 *isp; + +@@ -162,15 +147,22 @@ asmlinkage void do_softirq(void) + local_irq_save(flags); + + if (local_softirq_pending()) { +- curctx = current_thread_info(); + irqctx = __this_cpu_read(softirq_ctx); +- irqctx->tinfo.task = curctx->task; +- irqctx->tinfo.previous_esp = current_stack_pointer; ++ irqctx->previous_esp = current_stack_pointer; + + /* build the stack frame on the softirq stack */ +- isp = (u32 *) ((char *)irqctx + sizeof(*irqctx)); ++ isp = (u32 *) ((char *)irqctx + sizeof(*irqctx) - 8); ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ __set_fs(MAKE_MM_SEG(0)); ++#endif + + call_on_stack(__do_softirq, isp); ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ __set_fs(current_thread_info()->addr_limit); ++#endif ++ + /* + * Shouldn't happen, we returned above if in_interrupt(): + */ +@@ -191,7 +183,7 @@ bool handle_irq(unsigned irq, struct pt_regs *regs) + if (unlikely(!desc)) + return false; + +- if (user_mode_vm(regs) || !execute_on_irq_stack(overflow, desc, irq)) { ++ if (user_mode(regs) || !execute_on_irq_stack(overflow, desc, irq)) { + if (unlikely(overflow)) + print_stack_overflow(); + desc->handle_irq(irq, desc); +diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c +index d04d3ec..ea4b374 100644 +--- a/arch/x86/kernel/irq_64.c ++++ b/arch/x86/kernel/irq_64.c +@@ -44,7 +44,7 @@ static inline void stack_overflow_check(struct pt_regs *regs) + u64 estack_top, estack_bottom; + u64 curbase = (u64)task_stack_page(current); + +- if (user_mode_vm(regs)) ++ if (user_mode(regs)) + return; + + if (regs->sp >= curbase + sizeof(struct thread_info) + +diff --git a/arch/x86/kernel/kdebugfs.c b/arch/x86/kernel/kdebugfs.c +index 1d5d31e..ab846ed 100644 +--- a/arch/x86/kernel/kdebugfs.c ++++ b/arch/x86/kernel/kdebugfs.c +@@ -28,6 +28,8 @@ struct setup_data_node { + }; + + static ssize_t setup_data_read(struct file *file, char __user *user_buf, ++ size_t count, loff_t *ppos) __size_overflow(3); ++static ssize_t setup_data_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) + { + struct setup_data_node *node = file->private_data; +diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c +index 8bfb614..2b3b35f 100644 +--- a/arch/x86/kernel/kgdb.c ++++ b/arch/x86/kernel/kgdb.c +@@ -127,11 +127,11 @@ char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs) + #ifdef CONFIG_X86_32 + switch (regno) { + case GDB_SS: +- if (!user_mode_vm(regs)) ++ if (!user_mode(regs)) + *(unsigned long *)mem = __KERNEL_DS; + break; + case GDB_SP: +- if (!user_mode_vm(regs)) ++ if (!user_mode(regs)) + *(unsigned long *)mem = kernel_stack_pointer(regs); + break; + case GDB_GS: +@@ -476,12 +476,12 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code, + case 'k': + /* clear the trace bit */ + linux_regs->flags &= ~X86_EFLAGS_TF; +- atomic_set(&kgdb_cpu_doing_single_step, -1); ++ atomic_set_unchecked(&kgdb_cpu_doing_single_step, -1); + + /* set the trace bit if we're stepping */ + if (remcomInBuffer[0] == 's') { + linux_regs->flags |= X86_EFLAGS_TF; +- atomic_set(&kgdb_cpu_doing_single_step, ++ atomic_set_unchecked(&kgdb_cpu_doing_single_step, + raw_smp_processor_id()); + } + +@@ -546,7 +546,7 @@ static int __kgdb_notify(struct die_args *args, unsigned long cmd) + + switch (cmd) { + case DIE_DEBUG: +- if (atomic_read(&kgdb_cpu_doing_single_step) != -1) { ++ if (atomic_read_unchecked(&kgdb_cpu_doing_single_step) != -1) { + if (user_mode(regs)) + return single_step_cont(regs, args); + break; +diff --git a/arch/x86/kernel/kprobes-opt.c b/arch/x86/kernel/kprobes-opt.c +index c5e410e..da6aaf9 100644 +--- a/arch/x86/kernel/kprobes-opt.c ++++ b/arch/x86/kernel/kprobes-opt.c +@@ -338,7 +338,7 @@ int __kprobes arch_prepare_optimized_kprobe(struct optimized_kprobe *op) + * Verify if the address gap is in 2GB range, because this uses + * a relative jump. + */ +- rel = (long)op->optinsn.insn - (long)op->kp.addr + RELATIVEJUMP_SIZE; ++ rel = (long)op->optinsn.insn - ktla_ktva((long)op->kp.addr) + RELATIVEJUMP_SIZE; + if (abs(rel) > 0x7fffffff) + return -ERANGE; + +@@ -359,11 +359,11 @@ int __kprobes arch_prepare_optimized_kprobe(struct optimized_kprobe *op) + synthesize_set_arg1(buf + TMPL_MOVE_IDX, (unsigned long)op); + + /* Set probe function call */ +- synthesize_relcall(buf + TMPL_CALL_IDX, optimized_callback); ++ synthesize_relcall(buf + TMPL_CALL_IDX, ktla_ktva(optimized_callback)); + + /* Set returning jmp instruction at the tail of out-of-line buffer */ + synthesize_reljump(buf + TMPL_END_IDX + op->optinsn.size, +- (u8 *)op->kp.addr + op->optinsn.size); ++ (u8 *)ktla_ktva(op->kp.addr) + op->optinsn.size); + + flush_icache_range((unsigned long) buf, + (unsigned long) buf + TMPL_END_IDX + +@@ -385,7 +385,7 @@ static void __kprobes setup_optimize_kprobe(struct text_poke_param *tprm, + ((long)op->kp.addr + RELATIVEJUMP_SIZE)); + + /* Backup instructions which will be replaced by jump address */ +- memcpy(op->optinsn.copied_insn, op->kp.addr + INT3_SIZE, ++ memcpy(op->optinsn.copied_insn, ktla_ktva(op->kp.addr) + INT3_SIZE, + RELATIVE_ADDR_SIZE); + + insn_buf[0] = RELATIVEJUMP_OPCODE; +diff --git a/arch/x86/kernel/kprobes.c b/arch/x86/kernel/kprobes.c +index e213fc8..d783ba4 100644 +--- a/arch/x86/kernel/kprobes.c ++++ b/arch/x86/kernel/kprobes.c +@@ -120,8 +120,11 @@ static void __kprobes __synthesize_relative_insn(void *from, void *to, u8 op) + } __attribute__((packed)) *insn; + + insn = (struct __arch_relative_insn *)from; ++ ++ pax_open_kernel(); + insn->raddr = (s32)((long)(to) - ((long)(from) + 5)); + insn->op = op; ++ pax_close_kernel(); + } + + /* Insert a jump instruction at address 'from', which jumps to address 'to'.*/ +@@ -164,7 +167,7 @@ int __kprobes can_boost(kprobe_opcode_t *opcodes) + kprobe_opcode_t opcode; + kprobe_opcode_t *orig_opcodes = opcodes; + +- if (search_exception_tables((unsigned long)opcodes)) ++ if (search_exception_tables(ktva_ktla((unsigned long)opcodes))) + return 0; /* Page fault may occur on this address. */ + + retry: +@@ -332,7 +335,9 @@ int __kprobes __copy_instruction(u8 *dest, u8 *src) + /* Another subsystem puts a breakpoint, failed to recover */ + if (insn.opcode.bytes[0] == BREAKPOINT_INSTRUCTION) + return 0; ++ pax_open_kernel(); + memcpy(dest, insn.kaddr, insn.length); ++ pax_close_kernel(); + + #ifdef CONFIG_X86_64 + if (insn_rip_relative(&insn)) { +@@ -355,7 +360,9 @@ int __kprobes __copy_instruction(u8 *dest, u8 *src) + newdisp = (u8 *) src + (s64) insn.displacement.value - (u8 *) dest; + BUG_ON((s64) (s32) newdisp != newdisp); /* Sanity check. */ + disp = (u8 *) dest + insn_offset_displacement(&insn); ++ pax_open_kernel(); + *(s32 *) disp = (s32) newdisp; ++ pax_close_kernel(); + } + #endif + return insn.length; +@@ -485,7 +492,7 @@ setup_singlestep(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *k + * nor set current_kprobe, because it doesn't use single + * stepping. + */ +- regs->ip = (unsigned long)p->ainsn.insn; ++ regs->ip = ktva_ktla((unsigned long)p->ainsn.insn); + preempt_enable_no_resched(); + return; + } +@@ -504,7 +511,7 @@ setup_singlestep(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *k + if (p->opcode == BREAKPOINT_INSTRUCTION) + regs->ip = (unsigned long)p->addr; + else +- regs->ip = (unsigned long)p->ainsn.insn; ++ regs->ip = ktva_ktla((unsigned long)p->ainsn.insn); + } + + /* +@@ -583,7 +590,7 @@ static int __kprobes kprobe_handler(struct pt_regs *regs) + setup_singlestep(p, regs, kcb, 0); + return 1; + } +- } else if (*addr != BREAKPOINT_INSTRUCTION) { ++ } else if (*(kprobe_opcode_t *)ktla_ktva((unsigned long)addr) != BREAKPOINT_INSTRUCTION) { + /* + * The breakpoint instruction was removed right + * after we hit it. Another cpu has removed +@@ -628,6 +635,9 @@ static void __used __kprobes kretprobe_trampoline_holder(void) + " movq %rax, 152(%rsp)\n" + RESTORE_REGS_STRING + " popfq\n" ++#ifdef KERNEXEC_PLUGIN ++ " btsq $63,(%rsp)\n" ++#endif + #else + " pushf\n" + SAVE_REGS_STRING +@@ -765,7 +775,7 @@ static void __kprobes + resume_execution(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *kcb) + { + unsigned long *tos = stack_addr(regs); +- unsigned long copy_ip = (unsigned long)p->ainsn.insn; ++ unsigned long copy_ip = ktva_ktla((unsigned long)p->ainsn.insn); + unsigned long orig_ip = (unsigned long)p->addr; + kprobe_opcode_t *insn = p->ainsn.insn; + +@@ -947,7 +957,7 @@ kprobe_exceptions_notify(struct notifier_block *self, unsigned long val, void *d + struct die_args *args = data; + int ret = NOTIFY_DONE; + +- if (args->regs && user_mode_vm(args->regs)) ++ if (args->regs && user_mode(args->regs)) + return ret; + + switch (val) { +diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c +index ebc9873..1b9724b 100644 +--- a/arch/x86/kernel/ldt.c ++++ b/arch/x86/kernel/ldt.c +@@ -66,13 +66,13 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload) + if (reload) { + #ifdef CONFIG_SMP + preempt_disable(); +- load_LDT(pc); ++ load_LDT_nolock(pc); + if (!cpumask_equal(mm_cpumask(current->mm), + cpumask_of(smp_processor_id()))) + smp_call_function(flush_ldt, current->mm, 1); + preempt_enable(); + #else +- load_LDT(pc); ++ load_LDT_nolock(pc); + #endif + } + if (oldsize) { +@@ -94,7 +94,7 @@ static inline int copy_ldt(mm_context_t *new, mm_context_t *old) + return err; + + for (i = 0; i < old->size; i++) +- write_ldt_entry(new->ldt, i, old->ldt + i * LDT_ENTRY_SIZE); ++ write_ldt_entry(new->ldt, i, old->ldt + i); + return 0; + } + +@@ -115,6 +115,24 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm) + retval = copy_ldt(&mm->context, &old_mm->context); + mutex_unlock(&old_mm->context.lock); + } ++ ++ if (tsk == current) { ++ mm->context.vdso = 0; ++ ++#ifdef CONFIG_X86_32 ++#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) ++ mm->context.user_cs_base = 0UL; ++ mm->context.user_cs_limit = ~0UL; ++ ++#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP) ++ cpus_clear(mm->context.cpu_user_cs_mask); ++#endif ++ ++#endif ++#endif ++ ++ } ++ + return retval; + } + +@@ -229,6 +247,13 @@ static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode) + } + } + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (ldt_info.contents & MODIFY_LDT_CONTENTS_CODE)) { ++ error = -EINVAL; ++ goto out_unlock; ++ } ++#endif ++ + fill_ldt(&ldt, &ldt_info); + if (oldmode) + ldt.avl = 0; +diff --git a/arch/x86/kernel/machine_kexec_32.c b/arch/x86/kernel/machine_kexec_32.c +index 5b19e4d..6476a76 100644 +--- a/arch/x86/kernel/machine_kexec_32.c ++++ b/arch/x86/kernel/machine_kexec_32.c +@@ -26,7 +26,7 @@ + #include <asm/cacheflush.h> + #include <asm/debugreg.h> + +-static void set_idt(void *newidt, __u16 limit) ++static void set_idt(struct desc_struct *newidt, __u16 limit) + { + struct desc_ptr curidt; + +@@ -38,7 +38,7 @@ static void set_idt(void *newidt, __u16 limit) + } + + +-static void set_gdt(void *newgdt, __u16 limit) ++static void set_gdt(struct desc_struct *newgdt, __u16 limit) + { + struct desc_ptr curgdt; + +@@ -216,7 +216,7 @@ void machine_kexec(struct kimage *image) + } + + control_page = page_address(image->control_code_page); +- memcpy(control_page, relocate_kernel, KEXEC_CONTROL_CODE_MAX_SIZE); ++ memcpy(control_page, (void *)ktla_ktva((unsigned long)relocate_kernel), KEXEC_CONTROL_CODE_MAX_SIZE); + + relocate_kernel_ptr = control_page; + page_list[PA_CONTROL_PAGE] = __pa(control_page); +diff --git a/arch/x86/kernel/microcode_intel.c b/arch/x86/kernel/microcode_intel.c +index 0327e2b..e43737b 100644 +--- a/arch/x86/kernel/microcode_intel.c ++++ b/arch/x86/kernel/microcode_intel.c +@@ -430,13 +430,13 @@ static enum ucode_state request_microcode_fw(int cpu, struct device *device) + + static int get_ucode_user(void *to, const void *from, size_t n) + { +- return copy_from_user(to, from, n); ++ return copy_from_user(to, (const void __force_user *)from, n); + } + + static enum ucode_state + request_microcode_user(int cpu, const void __user *buf, size_t size) + { +- return generic_load_microcode(cpu, (void *)buf, size, &get_ucode_user); ++ return generic_load_microcode(cpu, (__force_kernel void *)buf, size, &get_ucode_user); + } + + static void microcode_fini_cpu(int cpu) +diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c +index f21fd94..61565cd 100644 +--- a/arch/x86/kernel/module.c ++++ b/arch/x86/kernel/module.c +@@ -35,15 +35,60 @@ + #define DEBUGP(fmt...) + #endif + +-void *module_alloc(unsigned long size) ++static inline void *__module_alloc(unsigned long size, pgprot_t prot) + { +- if (PAGE_ALIGN(size) > MODULES_LEN) ++ if (size == 0 || PAGE_ALIGN(size) > MODULES_LEN) + return NULL; + return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, +- GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL_EXEC, ++ GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO, prot, + -1, __builtin_return_address(0)); + } + ++void *module_alloc(unsigned long size) ++{ ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ return __module_alloc(size, PAGE_KERNEL); ++#else ++ return __module_alloc(size, PAGE_KERNEL_EXEC); ++#endif ++ ++} ++ ++#ifdef CONFIG_PAX_KERNEXEC ++#ifdef CONFIG_X86_32 ++void *module_alloc_exec(unsigned long size) ++{ ++ struct vm_struct *area; ++ ++ if (size == 0) ++ return NULL; ++ ++ area = __get_vm_area(size, VM_ALLOC, (unsigned long)&MODULES_EXEC_VADDR, (unsigned long)&MODULES_EXEC_END); ++ return area ? area->addr : NULL; ++} ++EXPORT_SYMBOL(module_alloc_exec); ++ ++void module_free_exec(struct module *mod, void *module_region) ++{ ++ vunmap(module_region); ++} ++EXPORT_SYMBOL(module_free_exec); ++#else ++void module_free_exec(struct module *mod, void *module_region) ++{ ++ module_free(mod, module_region); ++} ++EXPORT_SYMBOL(module_free_exec); ++ ++void *module_alloc_exec(unsigned long size) ++{ ++ return __module_alloc(size, PAGE_KERNEL_RX); ++} ++EXPORT_SYMBOL(module_alloc_exec); ++#endif ++#endif ++ + #ifdef CONFIG_X86_32 + int apply_relocate(Elf32_Shdr *sechdrs, + const char *strtab, +@@ -54,14 +99,16 @@ int apply_relocate(Elf32_Shdr *sechdrs, + unsigned int i; + Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr; + Elf32_Sym *sym; +- uint32_t *location; ++ uint32_t *plocation, location; + + DEBUGP("Applying relocate section %u to %u\n", relsec, + sechdrs[relsec].sh_info); + for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { + /* This is where to make the change */ +- location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr +- + rel[i].r_offset; ++ plocation = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr + rel[i].r_offset; ++ location = (uint32_t)plocation; ++ if (sechdrs[sechdrs[relsec].sh_info].sh_flags & SHF_EXECINSTR) ++ plocation = ktla_ktva((void *)plocation); + /* This is the symbol it is referring to. Note that all + undefined symbols have been resolved. */ + sym = (Elf32_Sym *)sechdrs[symindex].sh_addr +@@ -70,11 +117,15 @@ int apply_relocate(Elf32_Shdr *sechdrs, + switch (ELF32_R_TYPE(rel[i].r_info)) { + case R_386_32: + /* We add the value into the location given */ +- *location += sym->st_value; ++ pax_open_kernel(); ++ *plocation += sym->st_value; ++ pax_close_kernel(); + break; + case R_386_PC32: + /* Add the value, subtract its postition */ +- *location += sym->st_value - (uint32_t)location; ++ pax_open_kernel(); ++ *plocation += sym->st_value - location; ++ pax_close_kernel(); + break; + default: + printk(KERN_ERR "module %s: Unknown relocation: %u\n", +@@ -119,21 +170,30 @@ int apply_relocate_add(Elf64_Shdr *sechdrs, + case R_X86_64_NONE: + break; + case R_X86_64_64: ++ pax_open_kernel(); + *(u64 *)loc = val; ++ pax_close_kernel(); + break; + case R_X86_64_32: ++ pax_open_kernel(); + *(u32 *)loc = val; ++ pax_close_kernel(); + if (val != *(u32 *)loc) + goto overflow; + break; + case R_X86_64_32S: ++ pax_open_kernel(); + *(s32 *)loc = val; ++ pax_close_kernel(); + if ((s64)val != *(s32 *)loc) + goto overflow; + break; + case R_X86_64_PC32: + val -= (u64)loc; ++ pax_open_kernel(); + *(u32 *)loc = val; ++ pax_close_kernel(); ++ + #if 0 + if ((s64)val != *(s32 *)loc) + goto overflow; +diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c +index 32856fa..ce95eaa 100644 +--- a/arch/x86/kernel/nmi.c ++++ b/arch/x86/kernel/nmi.c +@@ -507,6 +507,17 @@ static inline void nmi_nesting_postprocess(void) + dotraplinkage notrace __kprobes void + do_nmi(struct pt_regs *regs, long error_code) + { ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++ if (!user_mode(regs)) { ++ unsigned long cs = regs->cs & 0xFFFF; ++ unsigned long ip = ktva_ktla(regs->ip); ++ ++ if ((cs == __KERNEL_CS || cs == __KERNEXEC_KERNEL_CS) && ip <= (unsigned long)_etext) ++ regs->ip = ip; ++ } ++#endif ++ + nmi_nesting_preprocess(regs); + + nmi_enter(); +diff --git a/arch/x86/kernel/paravirt-spinlocks.c b/arch/x86/kernel/paravirt-spinlocks.c +index 676b8c7..870ba04 100644 +--- a/arch/x86/kernel/paravirt-spinlocks.c ++++ b/arch/x86/kernel/paravirt-spinlocks.c +@@ -13,7 +13,7 @@ default_spin_lock_flags(arch_spinlock_t *lock, unsigned long flags) + arch_spin_lock(lock); + } + +-struct pv_lock_ops pv_lock_ops = { ++struct pv_lock_ops pv_lock_ops __read_only = { + #ifdef CONFIG_SMP + .spin_is_locked = __ticket_spin_is_locked, + .spin_is_contended = __ticket_spin_is_contended, +diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c +index ab13760..01218e0 100644 +--- a/arch/x86/kernel/paravirt.c ++++ b/arch/x86/kernel/paravirt.c +@@ -55,6 +55,9 @@ u64 _paravirt_ident_64(u64 x) + { + return x; + } ++#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE) ++PV_CALLEE_SAVE_REGS_THUNK(_paravirt_ident_64); ++#endif + + void __init default_banner(void) + { +@@ -147,15 +150,19 @@ unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf, + if (opfunc == NULL) + /* If there's no function, patch it with a ud2a (BUG) */ + ret = paravirt_patch_insns(insnbuf, len, ud2a, ud2a+sizeof(ud2a)); +- else if (opfunc == _paravirt_nop) ++ else if (opfunc == (void *)_paravirt_nop) + /* If the operation is a nop, then nop the callsite */ + ret = paravirt_patch_nop(); + + /* identity functions just return their single argument */ +- else if (opfunc == _paravirt_ident_32) ++ else if (opfunc == (void *)_paravirt_ident_32) + ret = paravirt_patch_ident_32(insnbuf, len); +- else if (opfunc == _paravirt_ident_64) ++ else if (opfunc == (void *)_paravirt_ident_64) + ret = paravirt_patch_ident_64(insnbuf, len); ++#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE) ++ else if (opfunc == (void *)__raw_callee_save__paravirt_ident_64) ++ ret = paravirt_patch_ident_64(insnbuf, len); ++#endif + + else if (type == PARAVIRT_PATCH(pv_cpu_ops.iret) || + type == PARAVIRT_PATCH(pv_cpu_ops.irq_enable_sysexit) || +@@ -180,7 +187,7 @@ unsigned paravirt_patch_insns(void *insnbuf, unsigned len, + if (insn_len > len || start == NULL) + insn_len = len; + else +- memcpy(insnbuf, start, insn_len); ++ memcpy(insnbuf, ktla_ktva(start), insn_len); + + return insn_len; + } +@@ -304,7 +311,7 @@ void arch_flush_lazy_mmu_mode(void) + preempt_enable(); + } + +-struct pv_info pv_info = { ++struct pv_info pv_info __read_only = { + .name = "bare hardware", + .paravirt_enabled = 0, + .kernel_rpl = 0, +@@ -315,16 +322,16 @@ struct pv_info pv_info = { + #endif + }; + +-struct pv_init_ops pv_init_ops = { ++struct pv_init_ops pv_init_ops __read_only = { + .patch = native_patch, + }; + +-struct pv_time_ops pv_time_ops = { ++struct pv_time_ops pv_time_ops __read_only = { + .sched_clock = native_sched_clock, + .steal_clock = native_steal_clock, + }; + +-struct pv_irq_ops pv_irq_ops = { ++struct pv_irq_ops pv_irq_ops __read_only = { + .save_fl = __PV_IS_CALLEE_SAVE(native_save_fl), + .restore_fl = __PV_IS_CALLEE_SAVE(native_restore_fl), + .irq_disable = __PV_IS_CALLEE_SAVE(native_irq_disable), +@@ -336,7 +343,7 @@ struct pv_irq_ops pv_irq_ops = { + #endif + }; + +-struct pv_cpu_ops pv_cpu_ops = { ++struct pv_cpu_ops pv_cpu_ops __read_only = { + .cpuid = native_cpuid, + .get_debugreg = native_get_debugreg, + .set_debugreg = native_set_debugreg, +@@ -397,21 +404,26 @@ struct pv_cpu_ops pv_cpu_ops = { + .end_context_switch = paravirt_nop, + }; + +-struct pv_apic_ops pv_apic_ops = { ++struct pv_apic_ops pv_apic_ops __read_only = { + #ifdef CONFIG_X86_LOCAL_APIC + .startup_ipi_hook = paravirt_nop, + #endif + }; + +-#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_PAE) ++#ifdef CONFIG_X86_32 ++#ifdef CONFIG_X86_PAE ++/* 64-bit pagetable entries */ ++#define PTE_IDENT PV_CALLEE_SAVE(_paravirt_ident_64) ++#else + /* 32-bit pagetable entries */ + #define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_32) ++#endif + #else + /* 64-bit pagetable entries */ + #define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_64) + #endif + +-struct pv_mmu_ops pv_mmu_ops = { ++struct pv_mmu_ops pv_mmu_ops __read_only = { + + .read_cr2 = native_read_cr2, + .write_cr2 = native_write_cr2, +@@ -461,6 +473,7 @@ struct pv_mmu_ops pv_mmu_ops = { + .make_pud = PTE_IDENT, + + .set_pgd = native_set_pgd, ++ .set_pgd_batched = native_set_pgd_batched, + #endif + #endif /* PAGETABLE_LEVELS >= 3 */ + +@@ -480,6 +493,12 @@ struct pv_mmu_ops pv_mmu_ops = { + }, + + .set_fixmap = native_set_fixmap, ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ .pax_open_kernel = native_pax_open_kernel, ++ .pax_close_kernel = native_pax_close_kernel, ++#endif ++ + }; + + EXPORT_SYMBOL_GPL(pv_time_ops); +diff --git a/arch/x86/kernel/pci-iommu_table.c b/arch/x86/kernel/pci-iommu_table.c +index 35ccf75..7a15747 100644 +--- a/arch/x86/kernel/pci-iommu_table.c ++++ b/arch/x86/kernel/pci-iommu_table.c +@@ -2,7 +2,7 @@ + #include <asm/iommu_table.h> + #include <linux/string.h> + #include <linux/kallsyms.h> +- ++#include <linux/sched.h> + + #define DEBUG 1 + +diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c +index 1d92a5a..7bc8c29 100644 +--- a/arch/x86/kernel/process.c ++++ b/arch/x86/kernel/process.c +@@ -69,16 +69,33 @@ void free_thread_xstate(struct task_struct *tsk) + + void free_thread_info(struct thread_info *ti) + { +- free_thread_xstate(ti->task); + free_pages((unsigned long)ti, THREAD_ORDER); + } + ++static struct kmem_cache *task_struct_cachep; ++ + void arch_task_cache_init(void) + { +- task_xstate_cachep = +- kmem_cache_create("task_xstate", xstate_size, ++ /* create a slab on which task_structs can be allocated */ ++ task_struct_cachep = ++ kmem_cache_create("task_struct", sizeof(struct task_struct), ++ ARCH_MIN_TASKALIGN, SLAB_PANIC | SLAB_NOTRACK, NULL); ++ ++ task_xstate_cachep = ++ kmem_cache_create("task_xstate", xstate_size, + __alignof__(union thread_xstate), +- SLAB_PANIC | SLAB_NOTRACK, NULL); ++ SLAB_PANIC | SLAB_NOTRACK | SLAB_USERCOPY, NULL); ++} ++ ++struct task_struct *alloc_task_struct_node(int node) ++{ ++ return kmem_cache_alloc_node(task_struct_cachep, GFP_KERNEL, node); ++} ++ ++void free_task_struct(struct task_struct *task) ++{ ++ free_thread_xstate(task); ++ kmem_cache_free(task_struct_cachep, task); + } + + /* +@@ -91,7 +108,7 @@ void exit_thread(void) + unsigned long *bp = t->io_bitmap_ptr; + + if (bp) { +- struct tss_struct *tss = &per_cpu(init_tss, get_cpu()); ++ struct tss_struct *tss = init_tss + get_cpu(); + + t->io_bitmap_ptr = NULL; + clear_thread_flag(TIF_IO_BITMAP); +@@ -127,7 +144,7 @@ void show_regs_common(void) + + printk(KERN_CONT "\n"); + printk(KERN_DEFAULT "Pid: %d, comm: %.20s %s %s %.*s", +- current->pid, current->comm, print_tainted(), ++ task_pid_nr(current), current->comm, print_tainted(), + init_utsname()->release, + (int)strcspn(init_utsname()->version, " "), + init_utsname()->version); +@@ -141,6 +158,9 @@ void flush_thread(void) + { + struct task_struct *tsk = current; + ++#if defined(CONFIG_X86_32) && !defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_PAX_MEMORY_UDEREF) ++ loadsegment(gs, 0); ++#endif + flush_ptrace_hw_breakpoint(tsk); + memset(tsk->thread.tls_array, 0, sizeof(tsk->thread.tls_array)); + /* +@@ -303,10 +323,10 @@ int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags) + regs.di = (unsigned long) arg; + + #ifdef CONFIG_X86_32 +- regs.ds = __USER_DS; +- regs.es = __USER_DS; ++ regs.ds = __KERNEL_DS; ++ regs.es = __KERNEL_DS; + regs.fs = __KERNEL_PERCPU; +- regs.gs = __KERNEL_STACK_CANARY; ++ savesegment(gs, regs.gs); + #else + regs.ss = __KERNEL_DS; + #endif +@@ -392,7 +412,7 @@ static void __exit_idle(void) + void exit_idle(void) + { + /* idle loop has pid 0 */ +- if (current->pid) ++ if (task_pid_nr(current)) + return; + __exit_idle(); + } +@@ -501,7 +521,7 @@ bool set_pm_idle_to_default(void) + + return ret; + } +-void stop_this_cpu(void *dummy) ++__noreturn void stop_this_cpu(void *dummy) + { + local_irq_disable(); + /* +@@ -743,16 +763,37 @@ static int __init idle_setup(char *str) + } + early_param("idle", idle_setup); + +-unsigned long arch_align_stack(unsigned long sp) ++#ifdef CONFIG_PAX_RANDKSTACK ++void pax_randomize_kstack(struct pt_regs *regs) + { +- if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) +- sp -= get_random_int() % 8192; +- return sp & ~0xf; +-} ++ struct thread_struct *thread = ¤t->thread; ++ unsigned long time; + +-unsigned long arch_randomize_brk(struct mm_struct *mm) +-{ +- unsigned long range_end = mm->brk + 0x02000000; +- return randomize_range(mm->brk, range_end, 0) ? : mm->brk; +-} ++ if (!randomize_va_space) ++ return; ++ ++ if (v8086_mode(regs)) ++ return; + ++ rdtscl(time); ++ ++ /* P4 seems to return a 0 LSB, ignore it */ ++#ifdef CONFIG_MPENTIUM4 ++ time &= 0x3EUL; ++ time <<= 2; ++#elif defined(CONFIG_X86_64) ++ time &= 0xFUL; ++ time <<= 4; ++#else ++ time &= 0x1FUL; ++ time <<= 3; ++#endif ++ ++ thread->sp0 ^= time; ++ load_sp0(init_tss + smp_processor_id(), thread); ++ ++#ifdef CONFIG_X86_64 ++ percpu_write(kernel_stack, thread->sp0); ++#endif ++} ++#endif +diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c +index ae68473..7b0bb71 100644 +--- a/arch/x86/kernel/process_32.c ++++ b/arch/x86/kernel/process_32.c +@@ -64,6 +64,7 @@ asmlinkage void ret_from_fork(void) __asm__("ret_from_fork"); + unsigned long thread_saved_pc(struct task_struct *tsk) + { + return ((unsigned long *)tsk->thread.sp)[3]; ++//XXX return tsk->thread.eip; + } + + void __show_regs(struct pt_regs *regs, int all) +@@ -73,15 +74,14 @@ void __show_regs(struct pt_regs *regs, int all) + unsigned long sp; + unsigned short ss, gs; + +- if (user_mode_vm(regs)) { ++ if (user_mode(regs)) { + sp = regs->sp; + ss = regs->ss & 0xffff; +- gs = get_user_gs(regs); + } else { + sp = kernel_stack_pointer(regs); + savesegment(ss, ss); +- savesegment(gs, gs); + } ++ gs = get_user_gs(regs); + + show_regs_common(); + +@@ -143,13 +143,14 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, + struct task_struct *tsk; + int err; + +- childregs = task_pt_regs(p); ++ childregs = task_stack_page(p) + THREAD_SIZE - sizeof(struct pt_regs) - 8; + *childregs = *regs; + childregs->ax = 0; + childregs->sp = sp; + + p->thread.sp = (unsigned long) childregs; + p->thread.sp0 = (unsigned long) (childregs+1); ++ p->tinfo.lowest_stack = (unsigned long)task_stack_page(p); + + p->thread.ip = (unsigned long) ret_from_fork; + +@@ -240,7 +241,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) + struct thread_struct *prev = &prev_p->thread, + *next = &next_p->thread; + int cpu = smp_processor_id(); +- struct tss_struct *tss = &per_cpu(init_tss, cpu); ++ struct tss_struct *tss = init_tss + cpu; + fpu_switch_t fpu; + + /* never put a printk in __switch_to... printk() calls wake_up*() indirectly */ +@@ -264,6 +265,10 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) + */ + lazy_save_gs(prev->gs); + ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ __set_fs(task_thread_info(next_p)->addr_limit); ++#endif ++ + /* + * Load the per-thread Thread-Local Storage descriptor. + */ +@@ -294,6 +299,9 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) + */ + arch_end_context_switch(next_p); + ++ percpu_write(current_task, next_p); ++ percpu_write(current_tinfo, &next_p->tinfo); ++ + /* + * Restore %gs if needed (which is common) + */ +@@ -302,8 +310,6 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) + + switch_fpu_finish(next_p, fpu); + +- percpu_write(current_task, next_p); +- + return prev_p; + } + +@@ -333,4 +339,3 @@ unsigned long get_wchan(struct task_struct *p) + } while (count++ < 16); + return 0; + } +- +diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c +index 43d8b48..c45d566 100644 +--- a/arch/x86/kernel/process_64.c ++++ b/arch/x86/kernel/process_64.c +@@ -162,8 +162,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, + struct pt_regs *childregs; + struct task_struct *me = current; + +- childregs = ((struct pt_regs *) +- (THREAD_SIZE + task_stack_page(p))) - 1; ++ childregs = task_stack_page(p) + THREAD_SIZE - sizeof(struct pt_regs) - 16; + *childregs = *regs; + + childregs->ax = 0; +@@ -175,6 +174,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, + p->thread.sp = (unsigned long) childregs; + p->thread.sp0 = (unsigned long) (childregs+1); + p->thread.usersp = me->thread.usersp; ++ p->tinfo.lowest_stack = (unsigned long)task_stack_page(p); + + set_tsk_thread_flag(p, TIF_FORK); + +@@ -280,7 +280,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) + struct thread_struct *prev = &prev_p->thread; + struct thread_struct *next = &next_p->thread; + int cpu = smp_processor_id(); +- struct tss_struct *tss = &per_cpu(init_tss, cpu); ++ struct tss_struct *tss = init_tss + cpu; + unsigned fsindex, gsindex; + fpu_switch_t fpu; + +@@ -362,10 +362,9 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) + prev->usersp = percpu_read(old_rsp); + percpu_write(old_rsp, next->usersp); + percpu_write(current_task, next_p); ++ percpu_write(current_tinfo, &next_p->tinfo); + +- percpu_write(kernel_stack, +- (unsigned long)task_stack_page(next_p) + +- THREAD_SIZE - KERNEL_STACK_OFFSET); ++ percpu_write(kernel_stack, next->sp0); + + /* + * Now maybe reload the debug registers and handle I/O bitmaps +@@ -434,12 +433,11 @@ unsigned long get_wchan(struct task_struct *p) + if (!p || p == current || p->state == TASK_RUNNING) + return 0; + stack = (unsigned long)task_stack_page(p); +- if (p->thread.sp < stack || p->thread.sp >= stack+THREAD_SIZE) ++ if (p->thread.sp < stack || p->thread.sp > stack+THREAD_SIZE-16-sizeof(u64)) + return 0; + fp = *(u64 *)(p->thread.sp); + do { +- if (fp < (unsigned long)stack || +- fp >= (unsigned long)stack+THREAD_SIZE) ++ if (fp < stack || fp > stack+THREAD_SIZE-16-sizeof(u64)) + return 0; + ip = *(u64 *)(fp+8); + if (!in_sched_functions(ip)) +diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c +index cf11783..e7ce551 100644 +--- a/arch/x86/kernel/ptrace.c ++++ b/arch/x86/kernel/ptrace.c +@@ -824,7 +824,7 @@ long arch_ptrace(struct task_struct *child, long request, + unsigned long addr, unsigned long data) + { + int ret; +- unsigned long __user *datap = (unsigned long __user *)data; ++ unsigned long __user *datap = (__force unsigned long __user *)data; + + switch (request) { + /* read the word at location addr in the USER area. */ +@@ -909,14 +909,14 @@ long arch_ptrace(struct task_struct *child, long request, + if ((int) addr < 0) + return -EIO; + ret = do_get_thread_area(child, addr, +- (struct user_desc __user *)data); ++ (__force struct user_desc __user *) data); + break; + + case PTRACE_SET_THREAD_AREA: + if ((int) addr < 0) + return -EIO; + ret = do_set_thread_area(child, addr, +- (struct user_desc __user *)data, 0); ++ (__force struct user_desc __user *) data, 0); + break; + #endif + +@@ -1426,7 +1426,7 @@ static void fill_sigtrap_info(struct task_struct *tsk, + memset(info, 0, sizeof(*info)); + info->si_signo = SIGTRAP; + info->si_code = si_code; +- info->si_addr = user_mode_vm(regs) ? (void __user *)regs->ip : NULL; ++ info->si_addr = user_mode(regs) ? (__force void __user *)regs->ip : NULL; + } + + void user_single_step_siginfo(struct task_struct *tsk, +@@ -1455,6 +1455,10 @@ void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, + # define IS_IA32 0 + #endif + ++#ifdef CONFIG_GRKERNSEC_SETXID ++extern void gr_delayed_cred_worker(void); ++#endif ++ + /* + * We must return the syscall number to actually look up in the table. + * This can be -1L to skip running any syscall at all. +@@ -1463,6 +1467,11 @@ long syscall_trace_enter(struct pt_regs *regs) + { + long ret = 0; + ++#ifdef CONFIG_GRKERNSEC_SETXID ++ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID))) ++ gr_delayed_cred_worker(); ++#endif ++ + /* + * If we stepped into a sysenter/syscall insn, it trapped in + * kernel mode; do_debug() cleared TF and set TIF_SINGLESTEP. +@@ -1506,6 +1515,11 @@ void syscall_trace_leave(struct pt_regs *regs) + { + bool step; + ++#ifdef CONFIG_GRKERNSEC_SETXID ++ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID))) ++ gr_delayed_cred_worker(); ++#endif ++ + audit_syscall_exit(regs); + + if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) +diff --git a/arch/x86/kernel/pvclock.c b/arch/x86/kernel/pvclock.c +index 42eb330..139955c 100644 +--- a/arch/x86/kernel/pvclock.c ++++ b/arch/x86/kernel/pvclock.c +@@ -81,11 +81,11 @@ unsigned long pvclock_tsc_khz(struct pvclock_vcpu_time_info *src) + return pv_tsc_khz; + } + +-static atomic64_t last_value = ATOMIC64_INIT(0); ++static atomic64_unchecked_t last_value = ATOMIC64_INIT(0); + + void pvclock_resume(void) + { +- atomic64_set(&last_value, 0); ++ atomic64_set_unchecked(&last_value, 0); + } + + cycle_t pvclock_clocksource_read(struct pvclock_vcpu_time_info *src) +@@ -121,11 +121,11 @@ cycle_t pvclock_clocksource_read(struct pvclock_vcpu_time_info *src) + * updating at the same time, and one of them could be slightly behind, + * making the assumption that last_value always go forward fail to hold. + */ +- last = atomic64_read(&last_value); ++ last = atomic64_read_unchecked(&last_value); + do { + if (ret < last) + return last; +- last = atomic64_cmpxchg(&last_value, last, ret); ++ last = atomic64_cmpxchg_unchecked(&last_value, last, ret); + } while (unlikely(last != ret)); + + return ret; +diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c +index 3034ee5..7cfbfa6 100644 +--- a/arch/x86/kernel/reboot.c ++++ b/arch/x86/kernel/reboot.c +@@ -35,7 +35,7 @@ void (*pm_power_off)(void); + EXPORT_SYMBOL(pm_power_off); + + static const struct desc_ptr no_idt = {}; +-static int reboot_mode; ++static unsigned short reboot_mode; + enum reboot_type reboot_type = BOOT_ACPI; + int reboot_force; + +@@ -335,13 +335,17 @@ core_initcall(reboot_init); + extern const unsigned char machine_real_restart_asm[]; + extern const u64 machine_real_restart_gdt[3]; + +-void machine_real_restart(unsigned int type) ++__noreturn void machine_real_restart(unsigned int type) + { + void *restart_va; + unsigned long restart_pa; +- void (*restart_lowmem)(unsigned int); ++ void (* __noreturn restart_lowmem)(unsigned int); + u64 *lowmem_gdt; + ++#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)) ++ struct desc_struct *gdt; ++#endif ++ + local_irq_disable(); + + /* Write zero to CMOS register number 0x0f, which the BIOS POST +@@ -367,14 +371,14 @@ void machine_real_restart(unsigned int type) + boot)". This seems like a fairly standard thing that gets set by + REBOOT.COM programs, and the previous reset routine did this + too. */ +- *((unsigned short *)0x472) = reboot_mode; ++ *(unsigned short *)(__va(0x472)) = reboot_mode; + + /* Patch the GDT in the low memory trampoline */ + lowmem_gdt = TRAMPOLINE_SYM(machine_real_restart_gdt); + + restart_va = TRAMPOLINE_SYM(machine_real_restart_asm); + restart_pa = virt_to_phys(restart_va); +- restart_lowmem = (void (*)(unsigned int))restart_pa; ++ restart_lowmem = (void *)restart_pa; + + /* GDT[0]: GDT self-pointer */ + lowmem_gdt[0] = +@@ -385,7 +389,33 @@ void machine_real_restart(unsigned int type) + GDT_ENTRY(0x009b, restart_pa, 0xffff); + + /* Jump to the identity-mapped low memory code */ ++ ++#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)) ++ gdt = get_cpu_gdt_table(smp_processor_id()); ++ pax_open_kernel(); ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ gdt[GDT_ENTRY_KERNEL_DS].type = 3; ++ gdt[GDT_ENTRY_KERNEL_DS].limit = 0xf; ++ asm("mov %0, %%ds; mov %0, %%es; mov %0, %%ss" : : "r" (__KERNEL_DS) : "memory"); ++#endif ++#ifdef CONFIG_PAX_KERNEXEC ++ gdt[GDT_ENTRY_KERNEL_CS].base0 = 0; ++ gdt[GDT_ENTRY_KERNEL_CS].base1 = 0; ++ gdt[GDT_ENTRY_KERNEL_CS].base2 = 0; ++ gdt[GDT_ENTRY_KERNEL_CS].limit0 = 0xffff; ++ gdt[GDT_ENTRY_KERNEL_CS].limit = 0xf; ++ gdt[GDT_ENTRY_KERNEL_CS].g = 1; ++#endif ++ pax_close_kernel(); ++#endif ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++ asm volatile("push %0; push %1; lret\n" : : "i" (__KERNEL_CS), "rm" (restart_lowmem), "a" (type)); ++ unreachable(); ++#else + restart_lowmem(type); ++#endif ++ + } + #ifdef CONFIG_APM_MODULE + EXPORT_SYMBOL(machine_real_restart); +@@ -564,7 +594,7 @@ void __attribute__((weak)) mach_reboot_fixups(void) + * try to force a triple fault and then cycle between hitting the keyboard + * controller and doing that + */ +-static void native_machine_emergency_restart(void) ++__noreturn static void native_machine_emergency_restart(void) + { + int i; + int attempt = 0; +@@ -688,13 +718,13 @@ void native_machine_shutdown(void) + #endif + } + +-static void __machine_emergency_restart(int emergency) ++static __noreturn void __machine_emergency_restart(int emergency) + { + reboot_emergency = emergency; + machine_ops.emergency_restart(); + } + +-static void native_machine_restart(char *__unused) ++static __noreturn void native_machine_restart(char *__unused) + { + printk("machine restart\n"); + +@@ -703,7 +733,7 @@ static void native_machine_restart(char *__unused) + __machine_emergency_restart(0); + } + +-static void native_machine_halt(void) ++static __noreturn void native_machine_halt(void) + { + /* stop other cpus and apics */ + machine_shutdown(); +@@ -714,7 +744,7 @@ static void native_machine_halt(void) + stop_this_cpu(NULL); + } + +-static void native_machine_power_off(void) ++__noreturn static void native_machine_power_off(void) + { + if (pm_power_off) { + if (!reboot_force) +@@ -723,6 +753,7 @@ static void native_machine_power_off(void) + } + /* a fallback in case there is no PM info available */ + tboot_shutdown(TB_SHUTDOWN_HALT); ++ unreachable(); + } + + struct machine_ops machine_ops = { +diff --git a/arch/x86/kernel/relocate_kernel_64.S b/arch/x86/kernel/relocate_kernel_64.S +index 7a6f3b3..bed145d7 100644 +--- a/arch/x86/kernel/relocate_kernel_64.S ++++ b/arch/x86/kernel/relocate_kernel_64.S +@@ -11,6 +11,7 @@ + #include <asm/kexec.h> + #include <asm/processor-flags.h> + #include <asm/pgtable_types.h> ++#include <asm/alternative-asm.h> + + /* + * Must be relocatable PIC code callable as a C function +@@ -160,13 +161,14 @@ identity_mapped: + xorq %rbp, %rbp + xorq %r8, %r8 + xorq %r9, %r9 +- xorq %r10, %r9 ++ xorq %r10, %r10 + xorq %r11, %r11 + xorq %r12, %r12 + xorq %r13, %r13 + xorq %r14, %r14 + xorq %r15, %r15 + ++ pax_force_retaddr 0, 1 + ret + + 1: +diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c +index 1a29015..712f324 100644 +--- a/arch/x86/kernel/setup.c ++++ b/arch/x86/kernel/setup.c +@@ -447,7 +447,7 @@ static void __init parse_setup_data(void) + + switch (data->type) { + case SETUP_E820_EXT: +- parse_e820_ext(data); ++ parse_e820_ext((struct setup_data __force_kernel *)data); + break; + case SETUP_DTB: + add_dtb(pa_data); +@@ -639,7 +639,7 @@ static void __init trim_bios_range(void) + * area (640->1Mb) as ram even though it is not. + * take them out. + */ +- e820_remove_range(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_RAM, 1); ++ e820_remove_range(ISA_START_ADDRESS, ISA_END_ADDRESS - ISA_START_ADDRESS, E820_RAM, 1); + sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); + } + +@@ -763,14 +763,14 @@ void __init setup_arch(char **cmdline_p) + + if (!boot_params.hdr.root_flags) + root_mountflags &= ~MS_RDONLY; +- init_mm.start_code = (unsigned long) _text; +- init_mm.end_code = (unsigned long) _etext; ++ init_mm.start_code = ktla_ktva((unsigned long) _text); ++ init_mm.end_code = ktla_ktva((unsigned long) _etext); + init_mm.end_data = (unsigned long) _edata; + init_mm.brk = _brk_end; + +- code_resource.start = virt_to_phys(_text); +- code_resource.end = virt_to_phys(_etext)-1; +- data_resource.start = virt_to_phys(_etext); ++ code_resource.start = virt_to_phys(ktla_ktva(_text)); ++ code_resource.end = virt_to_phys(ktla_ktva(_etext))-1; ++ data_resource.start = virt_to_phys(_sdata); + data_resource.end = virt_to_phys(_edata)-1; + bss_resource.start = virt_to_phys(&__bss_start); + bss_resource.end = virt_to_phys(&__bss_stop)-1; +diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c +index 5a98aa2..2f9288d 100644 +--- a/arch/x86/kernel/setup_percpu.c ++++ b/arch/x86/kernel/setup_percpu.c +@@ -21,19 +21,17 @@ + #include <asm/cpu.h> + #include <asm/stackprotector.h> + +-DEFINE_PER_CPU(int, cpu_number); ++#ifdef CONFIG_SMP ++DEFINE_PER_CPU(unsigned int, cpu_number); + EXPORT_PER_CPU_SYMBOL(cpu_number); ++#endif + +-#ifdef CONFIG_X86_64 + #define BOOT_PERCPU_OFFSET ((unsigned long)__per_cpu_load) +-#else +-#define BOOT_PERCPU_OFFSET 0 +-#endif + + DEFINE_PER_CPU(unsigned long, this_cpu_off) = BOOT_PERCPU_OFFSET; + EXPORT_PER_CPU_SYMBOL(this_cpu_off); + +-unsigned long __per_cpu_offset[NR_CPUS] __read_mostly = { ++unsigned long __per_cpu_offset[NR_CPUS] __read_only = { + [0 ... NR_CPUS-1] = BOOT_PERCPU_OFFSET, + }; + EXPORT_SYMBOL(__per_cpu_offset); +@@ -155,10 +153,10 @@ static inline void setup_percpu_segment(int cpu) + { + #ifdef CONFIG_X86_32 + struct desc_struct gdt; ++ unsigned long base = per_cpu_offset(cpu); + +- pack_descriptor(&gdt, per_cpu_offset(cpu), 0xFFFFF, +- 0x2 | DESCTYPE_S, 0x8); +- gdt.s = 1; ++ pack_descriptor(&gdt, base, (VMALLOC_END - base - 1) >> PAGE_SHIFT, ++ 0x83 | DESCTYPE_S, 0xC); + write_gdt_entry(get_cpu_gdt_table(cpu), + GDT_ENTRY_PERCPU, &gdt, DESCTYPE_S); + #endif +@@ -219,6 +217,11 @@ void __init setup_per_cpu_areas(void) + /* alrighty, percpu areas up and running */ + delta = (unsigned long)pcpu_base_addr - (unsigned long)__per_cpu_start; + for_each_possible_cpu(cpu) { ++#ifdef CONFIG_CC_STACKPROTECTOR ++#ifdef CONFIG_X86_32 ++ unsigned long canary = per_cpu(stack_canary.canary, cpu); ++#endif ++#endif + per_cpu_offset(cpu) = delta + pcpu_unit_offsets[cpu]; + per_cpu(this_cpu_off, cpu) = per_cpu_offset(cpu); + per_cpu(cpu_number, cpu) = cpu; +@@ -259,6 +262,12 @@ void __init setup_per_cpu_areas(void) + */ + set_cpu_numa_node(cpu, early_cpu_to_node(cpu)); + #endif ++#ifdef CONFIG_CC_STACKPROTECTOR ++#ifdef CONFIG_X86_32 ++ if (!cpu) ++ per_cpu(stack_canary.canary, cpu) = canary; ++#endif ++#endif + /* + * Up to this point, the boot CPU has been using .init.data + * area. Reload any changed state for the boot CPU. +diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c +index 115eac4..c0591d5 100644 +--- a/arch/x86/kernel/signal.c ++++ b/arch/x86/kernel/signal.c +@@ -190,7 +190,7 @@ static unsigned long align_sigframe(unsigned long sp) + * Align the stack pointer according to the i386 ABI, + * i.e. so that on function entry ((sp + 4) & 15) == 0. + */ +- sp = ((sp + 4) & -16ul) - 4; ++ sp = ((sp - 12) & -16ul) - 4; + #else /* !CONFIG_X86_32 */ + sp = round_down(sp, 16) - 8; + #endif +@@ -241,11 +241,11 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size, + * Return an always-bogus address instead so we will die with SIGSEGV. + */ + if (onsigstack && !likely(on_sig_stack(sp))) +- return (void __user *)-1L; ++ return (__force void __user *)-1L; + + /* save i387 state */ + if (used_math() && save_i387_xstate(*fpstate) < 0) +- return (void __user *)-1L; ++ return (__force void __user *)-1L; + + return (void __user *)sp; + } +@@ -300,9 +300,9 @@ __setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, + } + + if (current->mm->context.vdso) +- restorer = VDSO32_SYMBOL(current->mm->context.vdso, sigreturn); ++ restorer = (__force void __user *)VDSO32_SYMBOL(current->mm->context.vdso, sigreturn); + else +- restorer = &frame->retcode; ++ restorer = (void __user *)&frame->retcode; + if (ka->sa.sa_flags & SA_RESTORER) + restorer = ka->sa.sa_restorer; + +@@ -316,7 +316,7 @@ __setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, + * reasons and because gdb uses it as a signature to notice + * signal handler stack frames. + */ +- err |= __put_user(*((u64 *)&retcode), (u64 *)frame->retcode); ++ err |= __put_user(*((u64 *)&retcode), (u64 __user *)frame->retcode); + + if (err) + return -EFAULT; +@@ -370,7 +370,10 @@ static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, + err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); + + /* Set up to return from userspace. */ +- restorer = VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn); ++ if (current->mm->context.vdso) ++ restorer = (__force void __user *)VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn); ++ else ++ restorer = (void __user *)&frame->retcode; + if (ka->sa.sa_flags & SA_RESTORER) + restorer = ka->sa.sa_restorer; + put_user_ex(restorer, &frame->pretcode); +@@ -382,7 +385,7 @@ static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, + * reasons and because gdb uses it as a signature to notice + * signal handler stack frames. + */ +- put_user_ex(*((u64 *)&rt_retcode), (u64 *)frame->retcode); ++ put_user_ex(*((u64 *)&rt_retcode), (u64 __user *)frame->retcode); + } put_user_catch(err); + + if (err) +@@ -773,7 +776,7 @@ static void do_signal(struct pt_regs *regs) + * X86_32: vm86 regs switched out by assembly code before reaching + * here, so testing against kernel CS suffices. + */ +- if (!user_mode(regs)) ++ if (!user_mode_novm(regs)) + return; + + signr = get_signal_to_deliver(&info, &ka, regs, NULL); +diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c +index 6e1e406..edfb7cb 100644 +--- a/arch/x86/kernel/smpboot.c ++++ b/arch/x86/kernel/smpboot.c +@@ -699,17 +699,20 @@ static int __cpuinit do_boot_cpu(int apicid, int cpu) + set_idle_for_cpu(cpu, c_idle.idle); + do_rest: + per_cpu(current_task, cpu) = c_idle.idle; ++ per_cpu(current_tinfo, cpu) = &c_idle.idle->tinfo; + #ifdef CONFIG_X86_32 + /* Stack for startup_32 can be just as for start_secondary onwards */ + irq_ctx_init(cpu); + #else + clear_tsk_thread_flag(c_idle.idle, TIF_FORK); + initial_gs = per_cpu_offset(cpu); +- per_cpu(kernel_stack, cpu) = +- (unsigned long)task_stack_page(c_idle.idle) - +- KERNEL_STACK_OFFSET + THREAD_SIZE; ++ per_cpu(kernel_stack, cpu) = (unsigned long)task_stack_page(c_idle.idle) - 16 + THREAD_SIZE; + #endif ++ ++ pax_open_kernel(); + early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu); ++ pax_close_kernel(); ++ + initial_code = (unsigned long)start_secondary; + stack_start = c_idle.idle->thread.sp; + +@@ -851,6 +854,12 @@ int __cpuinit native_cpu_up(unsigned int cpu) + + per_cpu(cpu_state, cpu) = CPU_UP_PREPARE; + ++#ifdef CONFIG_PAX_PER_CPU_PGD ++ clone_pgd_range(get_cpu_pgd(cpu) + KERNEL_PGD_BOUNDARY, ++ swapper_pg_dir + KERNEL_PGD_BOUNDARY, ++ KERNEL_PGD_PTRS); ++#endif ++ + err = do_boot_cpu(apicid, cpu); + if (err) { + pr_debug("do_boot_cpu failed %d\n", err); +diff --git a/arch/x86/kernel/step.c b/arch/x86/kernel/step.c +index c346d11..d43b163 100644 +--- a/arch/x86/kernel/step.c ++++ b/arch/x86/kernel/step.c +@@ -27,10 +27,10 @@ unsigned long convert_ip_to_linear(struct task_struct *child, struct pt_regs *re + struct desc_struct *desc; + unsigned long base; + +- seg &= ~7UL; ++ seg >>= 3; + + mutex_lock(&child->mm->context.lock); +- if (unlikely((seg >> 3) >= child->mm->context.size)) ++ if (unlikely(seg >= child->mm->context.size)) + addr = -1L; /* bogus selector, access would fault */ + else { + desc = child->mm->context.ldt + seg; +@@ -42,7 +42,8 @@ unsigned long convert_ip_to_linear(struct task_struct *child, struct pt_regs *re + addr += base; + } + mutex_unlock(&child->mm->context.lock); +- } ++ } else if (seg == __KERNEL_CS || seg == __KERNEXEC_KERNEL_CS) ++ addr = ktla_ktva(addr); + + return addr; + } +@@ -53,6 +54,9 @@ static int is_setting_trap_flag(struct task_struct *child, struct pt_regs *regs) + unsigned char opcode[15]; + unsigned long addr = convert_ip_to_linear(child, regs); + ++ if (addr == -EINVAL) ++ return 0; ++ + copied = access_process_vm(child, addr, opcode, sizeof(opcode), 0); + for (i = 0; i < copied; i++) { + switch (opcode[i]) { +diff --git a/arch/x86/kernel/sys_i386_32.c b/arch/x86/kernel/sys_i386_32.c +index 0b0cb5f..db6b9ed 100644 +--- a/arch/x86/kernel/sys_i386_32.c ++++ b/arch/x86/kernel/sys_i386_32.c +@@ -24,17 +24,224 @@ + + #include <asm/syscalls.h> + +-/* +- * Do a system call from kernel instead of calling sys_execve so we +- * end up with proper pt_regs. +- */ +-int kernel_execve(const char *filename, +- const char *const argv[], +- const char *const envp[]) ++int i386_mmap_check(unsigned long addr, unsigned long len, unsigned long flags) + { +- long __res; +- asm volatile ("int $0x80" +- : "=a" (__res) +- : "0" (__NR_execve), "b" (filename), "c" (argv), "d" (envp) : "memory"); +- return __res; ++ unsigned long pax_task_size = TASK_SIZE; ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (current->mm->pax_flags & MF_PAX_SEGMEXEC) ++ pax_task_size = SEGMEXEC_TASK_SIZE; ++#endif ++ ++ if (len > pax_task_size || addr > pax_task_size - len) ++ return -EINVAL; ++ ++ return 0; ++} ++ ++unsigned long ++arch_get_unmapped_area(struct file *filp, unsigned long addr, ++ unsigned long len, unsigned long pgoff, unsigned long flags) ++{ ++ struct mm_struct *mm = current->mm; ++ struct vm_area_struct *vma; ++ unsigned long start_addr, pax_task_size = TASK_SIZE; ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (mm->pax_flags & MF_PAX_SEGMEXEC) ++ pax_task_size = SEGMEXEC_TASK_SIZE; ++#endif ++ ++ pax_task_size -= PAGE_SIZE; ++ ++ if (len > pax_task_size) ++ return -ENOMEM; ++ ++ if (flags & MAP_FIXED) ++ return addr; ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) ++#endif ++ ++ if (addr) { ++ addr = PAGE_ALIGN(addr); ++ if (pax_task_size - len >= addr) { ++ vma = find_vma(mm, addr); ++ if (check_heap_stack_gap(vma, addr, len)) ++ return addr; ++ } ++ } ++ if (len > mm->cached_hole_size) { ++ start_addr = addr = mm->free_area_cache; ++ } else { ++ start_addr = addr = mm->mmap_base; ++ mm->cached_hole_size = 0; ++ } ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ if (!(__supported_pte_mask & _PAGE_NX) && (mm->pax_flags & MF_PAX_PAGEEXEC) && (flags & MAP_EXECUTABLE) && start_addr >= mm->mmap_base) { ++ start_addr = 0x00110000UL; ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ start_addr += mm->delta_mmap & 0x03FFF000UL; ++#endif ++ ++ if (mm->start_brk <= start_addr && start_addr < mm->mmap_base) ++ start_addr = addr = mm->mmap_base; ++ else ++ addr = start_addr; ++ } ++#endif ++ ++full_search: ++ for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { ++ /* At this point: (!vma || addr < vma->vm_end). */ ++ if (pax_task_size - len < addr) { ++ /* ++ * Start a new search - just in case we missed ++ * some holes. ++ */ ++ if (start_addr != mm->mmap_base) { ++ start_addr = addr = mm->mmap_base; ++ mm->cached_hole_size = 0; ++ goto full_search; ++ } ++ return -ENOMEM; ++ } ++ if (check_heap_stack_gap(vma, addr, len)) ++ break; ++ if (addr + mm->cached_hole_size < vma->vm_start) ++ mm->cached_hole_size = vma->vm_start - addr; ++ addr = vma->vm_end; ++ if (mm->start_brk <= addr && addr < mm->mmap_base) { ++ start_addr = addr = mm->mmap_base; ++ mm->cached_hole_size = 0; ++ goto full_search; ++ } ++ } ++ ++ /* ++ * Remember the place where we stopped the search: ++ */ ++ mm->free_area_cache = addr + len; ++ return addr; ++} ++ ++unsigned long ++arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, ++ const unsigned long len, const unsigned long pgoff, ++ const unsigned long flags) ++{ ++ struct vm_area_struct *vma; ++ struct mm_struct *mm = current->mm; ++ unsigned long base = mm->mmap_base, addr = addr0, pax_task_size = TASK_SIZE; ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (mm->pax_flags & MF_PAX_SEGMEXEC) ++ pax_task_size = SEGMEXEC_TASK_SIZE; ++#endif ++ ++ pax_task_size -= PAGE_SIZE; ++ ++ /* requested length too big for entire address space */ ++ if (len > pax_task_size) ++ return -ENOMEM; ++ ++ if (flags & MAP_FIXED) ++ return addr; ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ if (!(__supported_pte_mask & _PAGE_NX) && (mm->pax_flags & MF_PAX_PAGEEXEC) && (flags & MAP_EXECUTABLE)) ++ goto bottomup; ++#endif ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) ++#endif ++ ++ /* requesting a specific address */ ++ if (addr) { ++ addr = PAGE_ALIGN(addr); ++ if (pax_task_size - len >= addr) { ++ vma = find_vma(mm, addr); ++ if (check_heap_stack_gap(vma, addr, len)) ++ return addr; ++ } ++ } ++ ++ /* check if free_area_cache is useful for us */ ++ if (len <= mm->cached_hole_size) { ++ mm->cached_hole_size = 0; ++ mm->free_area_cache = mm->mmap_base; ++ } ++ ++ /* either no address requested or can't fit in requested address hole */ ++ addr = mm->free_area_cache; ++ ++ /* make sure it can fit in the remaining address space */ ++ if (addr > len) { ++ vma = find_vma(mm, addr-len); ++ if (check_heap_stack_gap(vma, addr - len, len)) ++ /* remember the address as a hint for next time */ ++ return (mm->free_area_cache = addr-len); ++ } ++ ++ if (mm->mmap_base < len) ++ goto bottomup; ++ ++ addr = mm->mmap_base-len; ++ ++ do { ++ /* ++ * Lookup failure means no vma is above this address, ++ * else if new region fits below vma->vm_start, ++ * return with success: ++ */ ++ vma = find_vma(mm, addr); ++ if (check_heap_stack_gap(vma, addr, len)) ++ /* remember the address as a hint for next time */ ++ return (mm->free_area_cache = addr); ++ ++ /* remember the largest hole we saw so far */ ++ if (addr + mm->cached_hole_size < vma->vm_start) ++ mm->cached_hole_size = vma->vm_start - addr; ++ ++ /* try just below the current vma->vm_start */ ++ addr = skip_heap_stack_gap(vma, len); ++ } while (!IS_ERR_VALUE(addr)); ++ ++bottomup: ++ /* ++ * A failed mmap() very likely causes application failure, ++ * so fall back to the bottom-up function here. This scenario ++ * can happen with large stack limits and large mmap() ++ * allocations. ++ */ ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (mm->pax_flags & MF_PAX_SEGMEXEC) ++ mm->mmap_base = SEGMEXEC_TASK_UNMAPPED_BASE; ++ else ++#endif ++ ++ mm->mmap_base = TASK_UNMAPPED_BASE; ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base += mm->delta_mmap; ++#endif ++ ++ mm->free_area_cache = mm->mmap_base; ++ mm->cached_hole_size = ~0UL; ++ addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags); ++ /* ++ * Restore the topdown base: ++ */ ++ mm->mmap_base = base; ++ mm->free_area_cache = base; ++ mm->cached_hole_size = ~0UL; ++ ++ return addr; + } +diff --git a/arch/x86/kernel/sys_x86_64.c b/arch/x86/kernel/sys_x86_64.c +index b4d3c39..82bb73b 100644 +--- a/arch/x86/kernel/sys_x86_64.c ++++ b/arch/x86/kernel/sys_x86_64.c +@@ -95,8 +95,8 @@ out: + return error; + } + +-static void find_start_end(unsigned long flags, unsigned long *begin, +- unsigned long *end) ++static void find_start_end(struct mm_struct *mm, unsigned long flags, ++ unsigned long *begin, unsigned long *end) + { + if (!test_thread_flag(TIF_ADDR32) && (flags & MAP_32BIT)) { + unsigned long new_begin; +@@ -115,7 +115,7 @@ static void find_start_end(unsigned long flags, unsigned long *begin, + *begin = new_begin; + } + } else { +- *begin = TASK_UNMAPPED_BASE; ++ *begin = mm->mmap_base; + *end = TASK_SIZE; + } + } +@@ -132,16 +132,19 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, + if (flags & MAP_FIXED) + return addr; + +- find_start_end(flags, &begin, &end); ++ find_start_end(mm, flags, &begin, &end); + + if (len > end) + return -ENOMEM; + ++#ifdef CONFIG_PAX_RANDMMAP ++ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) ++#endif ++ + if (addr) { + addr = PAGE_ALIGN(addr); + vma = find_vma(mm, addr); +- if (end - len >= addr && +- (!vma || addr + len <= vma->vm_start)) ++ if (end - len >= addr && check_heap_stack_gap(vma, addr, len)) + return addr; + } + if (((flags & MAP_32BIT) || test_thread_flag(TIF_ADDR32)) +@@ -172,7 +175,7 @@ full_search: + } + return -ENOMEM; + } +- if (!vma || addr + len <= vma->vm_start) { ++ if (check_heap_stack_gap(vma, addr, len)) { + /* + * Remember the place where we stopped the search: + */ +@@ -195,7 +198,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + { + struct vm_area_struct *vma; + struct mm_struct *mm = current->mm; +- unsigned long addr = addr0, start_addr; ++ unsigned long base = mm->mmap_base, addr = addr0, start_addr; + + /* requested length too big for entire address space */ + if (len > TASK_SIZE) +@@ -208,13 +211,18 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + if (!test_thread_flag(TIF_ADDR32) && (flags & MAP_32BIT)) + goto bottomup; + ++#ifdef CONFIG_PAX_RANDMMAP ++ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) ++#endif ++ + /* requesting a specific address */ + if (addr) { + addr = PAGE_ALIGN(addr); +- vma = find_vma(mm, addr); +- if (TASK_SIZE - len >= addr && +- (!vma || addr + len <= vma->vm_start)) +- return addr; ++ if (TASK_SIZE - len >= addr) { ++ vma = find_vma(mm, addr); ++ if (check_heap_stack_gap(vma, addr, len)) ++ return addr; ++ } + } + + /* check if free_area_cache is useful for us */ +@@ -240,7 +248,7 @@ try_again: + * return with success: + */ + vma = find_vma(mm, addr); +- if (!vma || addr+len <= vma->vm_start) ++ if (check_heap_stack_gap(vma, addr, len)) + /* remember the address as a hint for next time */ + return mm->free_area_cache = addr; + +@@ -249,8 +257,8 @@ try_again: + mm->cached_hole_size = vma->vm_start - addr; + + /* try just below the current vma->vm_start */ +- addr = vma->vm_start-len; +- } while (len < vma->vm_start); ++ addr = skip_heap_stack_gap(vma, len); ++ } while (!IS_ERR_VALUE(addr)); + + fail: + /* +@@ -270,13 +278,21 @@ bottomup: + * can happen with large stack limits and large mmap() + * allocations. + */ ++ mm->mmap_base = TASK_UNMAPPED_BASE; ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base += mm->delta_mmap; ++#endif ++ ++ mm->free_area_cache = mm->mmap_base; + mm->cached_hole_size = ~0UL; +- mm->free_area_cache = TASK_UNMAPPED_BASE; + addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags); + /* + * Restore the topdown base: + */ +- mm->free_area_cache = mm->mmap_base; ++ mm->mmap_base = base; ++ mm->free_area_cache = base; + mm->cached_hole_size = ~0UL; + + return addr; +diff --git a/arch/x86/kernel/tboot.c b/arch/x86/kernel/tboot.c +index 6410744..79758f0 100644 +--- a/arch/x86/kernel/tboot.c ++++ b/arch/x86/kernel/tboot.c +@@ -219,7 +219,7 @@ static int tboot_setup_sleep(void) + + void tboot_shutdown(u32 shutdown_type) + { +- void (*shutdown)(void); ++ void (* __noreturn shutdown)(void); + + if (!tboot_enabled()) + return; +@@ -241,7 +241,7 @@ void tboot_shutdown(u32 shutdown_type) + + switch_to_tboot_pt(); + +- shutdown = (void(*)(void))(unsigned long)tboot->shutdown_entry; ++ shutdown = (void *)tboot->shutdown_entry; + shutdown(); + + /* should not reach here */ +@@ -299,7 +299,7 @@ static int tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control) + return 0; + } + +-static atomic_t ap_wfs_count; ++static atomic_unchecked_t ap_wfs_count; + + static int tboot_wait_for_aps(int num_aps) + { +@@ -323,9 +323,9 @@ static int __cpuinit tboot_cpu_callback(struct notifier_block *nfb, + { + switch (action) { + case CPU_DYING: +- atomic_inc(&ap_wfs_count); ++ atomic_inc_unchecked(&ap_wfs_count); + if (num_online_cpus() == 1) +- if (tboot_wait_for_aps(atomic_read(&ap_wfs_count))) ++ if (tboot_wait_for_aps(atomic_read_unchecked(&ap_wfs_count))) + return NOTIFY_BAD; + break; + } +@@ -344,7 +344,7 @@ static __init int tboot_late_init(void) + + tboot_create_trampoline(); + +- atomic_set(&ap_wfs_count, 0); ++ atomic_set_unchecked(&ap_wfs_count, 0); + register_hotcpu_notifier(&tboot_cpu_notifier); + + acpi_os_set_prepare_sleep(&tboot_sleep); +diff --git a/arch/x86/kernel/time.c b/arch/x86/kernel/time.c +index c6eba2b..3303326 100644 +--- a/arch/x86/kernel/time.c ++++ b/arch/x86/kernel/time.c +@@ -31,9 +31,9 @@ unsigned long profile_pc(struct pt_regs *regs) + { + unsigned long pc = instruction_pointer(regs); + +- if (!user_mode_vm(regs) && in_lock_functions(pc)) { ++ if (!user_mode(regs) && in_lock_functions(pc)) { + #ifdef CONFIG_FRAME_POINTER +- return *(unsigned long *)(regs->bp + sizeof(long)); ++ return ktla_ktva(*(unsigned long *)(regs->bp + sizeof(long))); + #else + unsigned long *sp = + (unsigned long *)kernel_stack_pointer(regs); +@@ -42,11 +42,17 @@ unsigned long profile_pc(struct pt_regs *regs) + * or above a saved flags. Eflags has bits 22-31 zero, + * kernel addresses don't. + */ ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ return ktla_ktva(sp[0]); ++#else + if (sp[0] >> 22) + return sp[0]; + if (sp[1] >> 22) + return sp[1]; + #endif ++ ++#endif + } + return pc; + } +diff --git a/arch/x86/kernel/tls.c b/arch/x86/kernel/tls.c +index 9d9d2f9..ed344e4 100644 +--- a/arch/x86/kernel/tls.c ++++ b/arch/x86/kernel/tls.c +@@ -84,6 +84,11 @@ int do_set_thread_area(struct task_struct *p, int idx, + if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX) + return -EINVAL; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if ((p->mm->pax_flags & MF_PAX_SEGMEXEC) && (info.contents & MODIFY_LDT_CONTENTS_CODE)) ++ return -EINVAL; ++#endif ++ + set_tls_desc(p, idx, &info, 1); + + return 0; +diff --git a/arch/x86/kernel/trampoline_32.S b/arch/x86/kernel/trampoline_32.S +index 451c0a7..e57f551 100644 +--- a/arch/x86/kernel/trampoline_32.S ++++ b/arch/x86/kernel/trampoline_32.S +@@ -32,6 +32,12 @@ + #include <asm/segment.h> + #include <asm/page_types.h> + ++#ifdef CONFIG_PAX_KERNEXEC ++#define ta(X) (X) ++#else ++#define ta(X) ((X) - __PAGE_OFFSET) ++#endif ++ + #ifdef CONFIG_SMP + + .section ".x86_trampoline","a" +@@ -62,7 +68,7 @@ r_base = . + inc %ax # protected mode (PE) bit + lmsw %ax # into protected mode + # flush prefetch and jump to startup_32_smp in arch/i386/kernel/head.S +- ljmpl $__BOOT_CS, $(startup_32_smp-__PAGE_OFFSET) ++ ljmpl $__BOOT_CS, $ta(startup_32_smp) + + # These need to be in the same 64K segment as the above; + # hence we don't use the boot_gdt_descr defined in head.S +diff --git a/arch/x86/kernel/trampoline_64.S b/arch/x86/kernel/trampoline_64.S +index 09ff517..df19fbff 100644 +--- a/arch/x86/kernel/trampoline_64.S ++++ b/arch/x86/kernel/trampoline_64.S +@@ -90,7 +90,7 @@ startup_32: + movl $__KERNEL_DS, %eax # Initialize the %ds segment register + movl %eax, %ds + +- movl $X86_CR4_PAE, %eax ++ movl $(X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE), %eax + movl %eax, %cr4 # Enable PAE mode + + # Setup trampoline 4 level pagetables +@@ -138,7 +138,7 @@ tidt: + # so the kernel can live anywhere + .balign 4 + tgdt: +- .short tgdt_end - tgdt # gdt limit ++ .short tgdt_end - tgdt - 1 # gdt limit + .long tgdt - r_base + .short 0 + .quad 0x00cf9b000000ffff # __KERNEL32_CS +diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c +index ff9281f1..30cb4ac 100644 +--- a/arch/x86/kernel/traps.c ++++ b/arch/x86/kernel/traps.c +@@ -70,12 +70,6 @@ asmlinkage int system_call(void); + + /* Do we ignore FPU interrupts ? */ + char ignore_fpu_irq; +- +-/* +- * The IDT has to be page-aligned to simplify the Pentium +- * F0 0F bug workaround. +- */ +-gate_desc idt_table[NR_VECTORS] __page_aligned_data = { { { { 0, 0 } } }, }; + #endif + + DECLARE_BITMAP(used_vectors, NR_VECTORS); +@@ -108,13 +102,13 @@ static inline void preempt_conditional_cli(struct pt_regs *regs) + } + + static void __kprobes +-do_trap(int trapnr, int signr, char *str, struct pt_regs *regs, ++do_trap(int trapnr, int signr, const char *str, struct pt_regs *regs, + long error_code, siginfo_t *info) + { + struct task_struct *tsk = current; + + #ifdef CONFIG_X86_32 +- if (regs->flags & X86_VM_MASK) { ++ if (v8086_mode(regs)) { + /* + * traps 0, 1, 3, 4, and 5 should be forwarded to vm86. + * On nmi (interrupt 2), do_trap should not be called. +@@ -125,7 +119,7 @@ do_trap(int trapnr, int signr, char *str, struct pt_regs *regs, + } + #endif + +- if (!user_mode(regs)) ++ if (!user_mode_novm(regs)) + goto kernel_trap; + + #ifdef CONFIG_X86_32 +@@ -148,7 +142,7 @@ trap_signal: + printk_ratelimit()) { + printk(KERN_INFO + "%s[%d] trap %s ip:%lx sp:%lx error:%lx", +- tsk->comm, tsk->pid, str, ++ tsk->comm, task_pid_nr(tsk), str, + regs->ip, regs->sp, error_code); + print_vma_addr(" in ", regs->ip); + printk("\n"); +@@ -165,8 +159,20 @@ kernel_trap: + if (!fixup_exception(regs)) { + tsk->thread.error_code = error_code; + tsk->thread.trap_nr = trapnr; ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++ if (trapnr == 12 && ((regs->cs & 0xFFFF) == __KERNEL_CS || (regs->cs & 0xFFFF) == __KERNEXEC_KERNEL_CS)) ++ str = "PAX: suspicious stack segment fault"; ++#endif ++ + die(str, regs, error_code); + } ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ if (trapnr == 4) ++ pax_report_refcount_overflow(regs); ++#endif ++ + return; + + #ifdef CONFIG_X86_32 +@@ -259,14 +265,30 @@ do_general_protection(struct pt_regs *regs, long error_code) + conditional_sti(regs); + + #ifdef CONFIG_X86_32 +- if (regs->flags & X86_VM_MASK) ++ if (v8086_mode(regs)) + goto gp_in_vm86; + #endif + + tsk = current; +- if (!user_mode(regs)) ++ if (!user_mode_novm(regs)) + goto gp_in_kernel; + ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) ++ if (!(__supported_pte_mask & _PAGE_NX) && tsk->mm && (tsk->mm->pax_flags & MF_PAX_PAGEEXEC)) { ++ struct mm_struct *mm = tsk->mm; ++ unsigned long limit; ++ ++ down_write(&mm->mmap_sem); ++ limit = mm->context.user_cs_limit; ++ if (limit < TASK_SIZE) { ++ track_exec_limit(mm, limit, TASK_SIZE, VM_EXEC); ++ up_write(&mm->mmap_sem); ++ return; ++ } ++ up_write(&mm->mmap_sem); ++ } ++#endif ++ + tsk->thread.error_code = error_code; + tsk->thread.trap_nr = X86_TRAP_GP; + +@@ -299,6 +321,13 @@ gp_in_kernel: + if (notify_die(DIE_GPF, "general protection fault", regs, error_code, + X86_TRAP_GP, SIGSEGV) == NOTIFY_STOP) + return; ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++ if ((regs->cs & 0xFFFF) == __KERNEL_CS || (regs->cs & 0xFFFF) == __KERNEXEC_KERNEL_CS) ++ die("PAX: suspicious general protection fault", regs, error_code); ++ else ++#endif ++ + die("general protection fault", regs, error_code); + } + +@@ -425,7 +454,7 @@ dotraplinkage void __kprobes do_debug(struct pt_regs *regs, long error_code) + /* It's safe to allow irq's after DR6 has been saved */ + preempt_conditional_sti(regs); + +- if (regs->flags & X86_VM_MASK) { ++ if (v8086_mode(regs)) { + handle_vm86_trap((struct kernel_vm86_regs *) regs, error_code, + X86_TRAP_DB); + preempt_conditional_cli(regs); +@@ -440,7 +469,7 @@ dotraplinkage void __kprobes do_debug(struct pt_regs *regs, long error_code) + * We already checked v86 mode above, so we can check for kernel mode + * by just checking the CPL of CS. + */ +- if ((dr6 & DR_STEP) && !user_mode(regs)) { ++ if ((dr6 & DR_STEP) && !user_mode_novm(regs)) { + tsk->thread.debugreg6 &= ~DR_STEP; + set_tsk_thread_flag(tsk, TIF_SINGLESTEP); + regs->flags &= ~X86_EFLAGS_TF; +@@ -471,7 +500,7 @@ void math_error(struct pt_regs *regs, int error_code, int trapnr) + return; + conditional_sti(regs); + +- if (!user_mode_vm(regs)) ++ if (!user_mode(regs)) + { + if (!fixup_exception(regs)) { + task->thread.error_code = error_code; +diff --git a/arch/x86/kernel/verify_cpu.S b/arch/x86/kernel/verify_cpu.S +index b9242ba..50c5edd 100644 +--- a/arch/x86/kernel/verify_cpu.S ++++ b/arch/x86/kernel/verify_cpu.S +@@ -20,6 +20,7 @@ + * arch/x86/boot/compressed/head_64.S: Boot cpu verification + * arch/x86/kernel/trampoline_64.S: secondary processor verification + * arch/x86/kernel/head_32.S: processor startup ++ * arch/x86/kernel/acpi/realmode/wakeup.S: 32bit processor resume + * + * verify_cpu, returns the status of longmode and SSE in register %eax. + * 0: Success 1: Failure +diff --git a/arch/x86/kernel/vm86_32.c b/arch/x86/kernel/vm86_32.c +index 255f58a..5e91150 100644 +--- a/arch/x86/kernel/vm86_32.c ++++ b/arch/x86/kernel/vm86_32.c +@@ -41,6 +41,7 @@ + #include <linux/ptrace.h> + #include <linux/audit.h> + #include <linux/stddef.h> ++#include <linux/grsecurity.h> + + #include <asm/uaccess.h> + #include <asm/io.h> +@@ -148,7 +149,7 @@ struct pt_regs *save_v86_state(struct kernel_vm86_regs *regs) + do_exit(SIGSEGV); + } + +- tss = &per_cpu(init_tss, get_cpu()); ++ tss = init_tss + get_cpu(); + current->thread.sp0 = current->thread.saved_sp0; + current->thread.sysenter_cs = __KERNEL_CS; + load_sp0(tss, ¤t->thread); +@@ -210,6 +211,13 @@ int sys_vm86old(struct vm86_struct __user *v86, struct pt_regs *regs) + struct task_struct *tsk; + int tmp, ret = -EPERM; + ++#ifdef CONFIG_GRKERNSEC_VM86 ++ if (!capable(CAP_SYS_RAWIO)) { ++ gr_handle_vm86(); ++ goto out; ++ } ++#endif ++ + tsk = current; + if (tsk->thread.saved_sp0) + goto out; +@@ -240,6 +248,14 @@ int sys_vm86(unsigned long cmd, unsigned long arg, struct pt_regs *regs) + int tmp, ret; + struct vm86plus_struct __user *v86; + ++#ifdef CONFIG_GRKERNSEC_VM86 ++ if (!capable(CAP_SYS_RAWIO)) { ++ gr_handle_vm86(); ++ ret = -EPERM; ++ goto out; ++ } ++#endif ++ + tsk = current; + switch (cmd) { + case VM86_REQUEST_IRQ: +@@ -326,7 +342,7 @@ static void do_sys_vm86(struct kernel_vm86_struct *info, struct task_struct *tsk + tsk->thread.saved_fs = info->regs32->fs; + tsk->thread.saved_gs = get_user_gs(info->regs32); + +- tss = &per_cpu(init_tss, get_cpu()); ++ tss = init_tss + get_cpu(); + tsk->thread.sp0 = (unsigned long) &info->VM86_TSS_ESP0; + if (cpu_has_sep) + tsk->thread.sysenter_cs = 0; +@@ -533,7 +549,7 @@ static void do_int(struct kernel_vm86_regs *regs, int i, + goto cannot_handle; + if (i == 0x21 && is_revectored(AH(regs), &KVM86->int21_revectored)) + goto cannot_handle; +- intr_ptr = (unsigned long __user *) (i << 2); ++ intr_ptr = (__force unsigned long __user *) (i << 2); + if (get_user(segoffs, intr_ptr)) + goto cannot_handle; + if ((segoffs >> 16) == BIOSSEG) +diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S +index 0f703f1..9e15f64 100644 +--- a/arch/x86/kernel/vmlinux.lds.S ++++ b/arch/x86/kernel/vmlinux.lds.S +@@ -26,6 +26,13 @@ + #include <asm/page_types.h> + #include <asm/cache.h> + #include <asm/boot.h> ++#include <asm/segment.h> ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++#define __KERNEL_TEXT_OFFSET (LOAD_OFFSET + ____LOAD_PHYSICAL_ADDR) ++#else ++#define __KERNEL_TEXT_OFFSET 0 ++#endif + + #undef i386 /* in case the preprocessor is a 32bit one */ + +@@ -69,30 +76,43 @@ jiffies_64 = jiffies; + + PHDRS { + text PT_LOAD FLAGS(5); /* R_E */ ++#ifdef CONFIG_X86_32 ++ module PT_LOAD FLAGS(5); /* R_E */ ++#endif ++#ifdef CONFIG_XEN ++ rodata PT_LOAD FLAGS(5); /* R_E */ ++#else ++ rodata PT_LOAD FLAGS(4); /* R__ */ ++#endif + data PT_LOAD FLAGS(6); /* RW_ */ +-#ifdef CONFIG_X86_64 ++ init.begin PT_LOAD FLAGS(6); /* RW_ */ + #ifdef CONFIG_SMP + percpu PT_LOAD FLAGS(6); /* RW_ */ + #endif ++ text.init PT_LOAD FLAGS(5); /* R_E */ ++ text.exit PT_LOAD FLAGS(5); /* R_E */ + init PT_LOAD FLAGS(7); /* RWE */ +-#endif + note PT_NOTE FLAGS(0); /* ___ */ + } + + SECTIONS + { + #ifdef CONFIG_X86_32 +- . = LOAD_OFFSET + LOAD_PHYSICAL_ADDR; +- phys_startup_32 = startup_32 - LOAD_OFFSET; ++ . = LOAD_OFFSET + ____LOAD_PHYSICAL_ADDR; + #else +- . = __START_KERNEL; +- phys_startup_64 = startup_64 - LOAD_OFFSET; ++ . = __START_KERNEL; + #endif + + /* Text and read-only data */ +- .text : AT(ADDR(.text) - LOAD_OFFSET) { +- _text = .; ++ .text (. - __KERNEL_TEXT_OFFSET): AT(ADDR(.text) - LOAD_OFFSET + __KERNEL_TEXT_OFFSET) { + /* bootstrapping code */ ++#ifdef CONFIG_X86_32 ++ phys_startup_32 = startup_32 - LOAD_OFFSET + __KERNEL_TEXT_OFFSET; ++#else ++ phys_startup_64 = startup_64 - LOAD_OFFSET + __KERNEL_TEXT_OFFSET; ++#endif ++ __LOAD_PHYSICAL_ADDR = . - LOAD_OFFSET + __KERNEL_TEXT_OFFSET; ++ _text = .; + HEAD_TEXT + #ifdef CONFIG_X86_32 + . = ALIGN(PAGE_SIZE); +@@ -108,13 +128,47 @@ SECTIONS + IRQENTRY_TEXT + *(.fixup) + *(.gnu.warning) +- /* End of text section */ +- _etext = .; + } :text = 0x9090 + +- NOTES :text :note ++ . += __KERNEL_TEXT_OFFSET; + +- EXCEPTION_TABLE(16) :text = 0x9090 ++#ifdef CONFIG_X86_32 ++ . = ALIGN(PAGE_SIZE); ++ .module.text : AT(ADDR(.module.text) - LOAD_OFFSET) { ++ ++#if defined(CONFIG_PAX_KERNEXEC) && defined(CONFIG_MODULES) ++ MODULES_EXEC_VADDR = .; ++ BYTE(0) ++ . += (CONFIG_PAX_KERNEXEC_MODULE_TEXT * 1024 * 1024); ++ . = ALIGN(HPAGE_SIZE); ++ MODULES_EXEC_END = . - 1; ++#endif ++ ++ } :module ++#endif ++ ++ .text.end : AT(ADDR(.text.end) - LOAD_OFFSET) { ++ /* End of text section */ ++ _etext = . - __KERNEL_TEXT_OFFSET; ++ } ++ ++#ifdef CONFIG_X86_32 ++ . = ALIGN(PAGE_SIZE); ++ .rodata.page_aligned : AT(ADDR(.rodata.page_aligned) - LOAD_OFFSET) { ++ *(.idt) ++ . = ALIGN(PAGE_SIZE); ++ *(.empty_zero_page) ++ *(.initial_pg_fixmap) ++ *(.initial_pg_pmd) ++ *(.initial_page_table) ++ *(.swapper_pg_dir) ++ } :rodata ++#endif ++ ++ . = ALIGN(PAGE_SIZE); ++ NOTES :rodata :note ++ ++ EXCEPTION_TABLE(16) :rodata + + #if defined(CONFIG_DEBUG_RODATA) + /* .text should occupy whole number of pages */ +@@ -126,16 +180,20 @@ SECTIONS + + /* Data */ + .data : AT(ADDR(.data) - LOAD_OFFSET) { ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ . = ALIGN(HPAGE_SIZE); ++#else ++ . = ALIGN(PAGE_SIZE); ++#endif ++ + /* Start of data section */ + _sdata = .; + + /* init_task */ + INIT_TASK_DATA(THREAD_SIZE) + +-#ifdef CONFIG_X86_32 +- /* 32 bit has nosave before _edata */ + NOSAVE_DATA +-#endif + + PAGE_ALIGNED_DATA(PAGE_SIZE) + +@@ -176,12 +234,19 @@ SECTIONS + #endif /* CONFIG_X86_64 */ + + /* Init code and data - will be freed after init */ +- . = ALIGN(PAGE_SIZE); + .init.begin : AT(ADDR(.init.begin) - LOAD_OFFSET) { ++ BYTE(0) ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ . = ALIGN(HPAGE_SIZE); ++#else ++ . = ALIGN(PAGE_SIZE); ++#endif ++ + __init_begin = .; /* paired with __init_end */ +- } ++ } :init.begin + +-#if defined(CONFIG_X86_64) && defined(CONFIG_SMP) ++#ifdef CONFIG_SMP + /* + * percpu offsets are zero-based on SMP. PERCPU_VADDR() changes the + * output PHDR, so the next output section - .init.text - should +@@ -190,12 +255,27 @@ SECTIONS + PERCPU_VADDR(INTERNODE_CACHE_BYTES, 0, :percpu) + #endif + +- INIT_TEXT_SECTION(PAGE_SIZE) +-#ifdef CONFIG_X86_64 +- :init +-#endif ++ . = ALIGN(PAGE_SIZE); ++ init_begin = .; ++ .init.text (. - __KERNEL_TEXT_OFFSET): AT(init_begin - LOAD_OFFSET) { ++ VMLINUX_SYMBOL(_sinittext) = .; ++ INIT_TEXT ++ VMLINUX_SYMBOL(_einittext) = .; ++ . = ALIGN(PAGE_SIZE); ++ } :text.init + +- INIT_DATA_SECTION(16) ++ /* ++ * .exit.text is discard at runtime, not link time, to deal with ++ * references from .altinstructions and .eh_frame ++ */ ++ .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET + __KERNEL_TEXT_OFFSET) { ++ EXIT_TEXT ++ . = ALIGN(16); ++ } :text.exit ++ . = init_begin + SIZEOF(.init.text) + SIZEOF(.exit.text); ++ ++ . = ALIGN(PAGE_SIZE); ++ INIT_DATA_SECTION(16) :init + + /* + * Code and data for a variety of lowlevel trampolines, to be +@@ -269,19 +349,12 @@ SECTIONS + } + + . = ALIGN(8); +- /* +- * .exit.text is discard at runtime, not link time, to deal with +- * references from .altinstructions and .eh_frame +- */ +- .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { +- EXIT_TEXT +- } + + .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { + EXIT_DATA + } + +-#if !defined(CONFIG_X86_64) || !defined(CONFIG_SMP) ++#ifndef CONFIG_SMP + PERCPU_SECTION(INTERNODE_CACHE_BYTES) + #endif + +@@ -300,16 +373,10 @@ SECTIONS + .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) { + __smp_locks = .; + *(.smp_locks) +- . = ALIGN(PAGE_SIZE); + __smp_locks_end = .; ++ . = ALIGN(PAGE_SIZE); + } + +-#ifdef CONFIG_X86_64 +- .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { +- NOSAVE_DATA +- } +-#endif +- + /* BSS */ + . = ALIGN(PAGE_SIZE); + .bss : AT(ADDR(.bss) - LOAD_OFFSET) { +@@ -325,6 +392,7 @@ SECTIONS + __brk_base = .; + . += 64 * 1024; /* 64k alignment slop space */ + *(.brk_reservation) /* areas brk users have reserved */ ++ . = ALIGN(HPAGE_SIZE); + __brk_limit = .; + } + +@@ -351,13 +419,12 @@ SECTIONS + * for the boot processor. + */ + #define INIT_PER_CPU(x) init_per_cpu__##x = x + __per_cpu_load +-INIT_PER_CPU(gdt_page); + INIT_PER_CPU(irq_stack_union); + + /* + * Build-time check on the image size: + */ +-. = ASSERT((_end - _text <= KERNEL_IMAGE_SIZE), ++. = ASSERT((_end - _text - __KERNEL_TEXT_OFFSET <= KERNEL_IMAGE_SIZE), + "kernel image bigger than KERNEL_IMAGE_SIZE"); + + #ifdef CONFIG_SMP +diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c +index 7515cf0..331a1a0 100644 +--- a/arch/x86/kernel/vsyscall_64.c ++++ b/arch/x86/kernel/vsyscall_64.c +@@ -54,15 +54,13 @@ + DEFINE_VVAR(int, vgetcpu_mode); + DEFINE_VVAR(struct vsyscall_gtod_data, vsyscall_gtod_data); + +-static enum { EMULATE, NATIVE, NONE } vsyscall_mode = EMULATE; ++static enum { EMULATE, NONE } vsyscall_mode = EMULATE; + + static int __init vsyscall_setup(char *str) + { + if (str) { + if (!strcmp("emulate", str)) + vsyscall_mode = EMULATE; +- else if (!strcmp("native", str)) +- vsyscall_mode = NATIVE; + else if (!strcmp("none", str)) + vsyscall_mode = NONE; + else +@@ -206,7 +204,7 @@ bool emulate_vsyscall(struct pt_regs *regs, unsigned long address) + + tsk = current; + if (seccomp_mode(&tsk->seccomp)) +- do_exit(SIGKILL); ++ do_group_exit(SIGKILL); + + /* + * With a real vsyscall, page faults cause SIGSEGV. We want to +@@ -278,8 +276,7 @@ bool emulate_vsyscall(struct pt_regs *regs, unsigned long address) + return true; + + sigsegv: +- force_sig(SIGSEGV, current); +- return true; ++ do_group_exit(SIGKILL); + } + + /* +@@ -332,10 +329,7 @@ void __init map_vsyscall(void) + extern char __vvar_page; + unsigned long physaddr_vvar_page = __pa_symbol(&__vvar_page); + +- __set_fixmap(VSYSCALL_FIRST_PAGE, physaddr_vsyscall, +- vsyscall_mode == NATIVE +- ? PAGE_KERNEL_VSYSCALL +- : PAGE_KERNEL_VVAR); ++ __set_fixmap(VSYSCALL_FIRST_PAGE, physaddr_vsyscall, PAGE_KERNEL_VVAR); + BUILD_BUG_ON((unsigned long)__fix_to_virt(VSYSCALL_FIRST_PAGE) != + (unsigned long)VSYSCALL_START); + +diff --git a/arch/x86/kernel/x8664_ksyms_64.c b/arch/x86/kernel/x8664_ksyms_64.c +index 9796c2f..f686fbf 100644 +--- a/arch/x86/kernel/x8664_ksyms_64.c ++++ b/arch/x86/kernel/x8664_ksyms_64.c +@@ -29,8 +29,6 @@ EXPORT_SYMBOL(__put_user_8); + EXPORT_SYMBOL(copy_user_generic_string); + EXPORT_SYMBOL(copy_user_generic_unrolled); + EXPORT_SYMBOL(__copy_user_nocache); +-EXPORT_SYMBOL(_copy_from_user); +-EXPORT_SYMBOL(_copy_to_user); + + EXPORT_SYMBOL(copy_page); + EXPORT_SYMBOL(clear_page); +diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c +index e62728e..5fc3a07 100644 +--- a/arch/x86/kernel/xsave.c ++++ b/arch/x86/kernel/xsave.c +@@ -131,7 +131,7 @@ int check_for_xstate(struct i387_fxsave_struct __user *buf, + fx_sw_user->xstate_size > fx_sw_user->extended_size) + return -EINVAL; + +- err = __get_user(magic2, (__u32 *) (((void *)fpstate) + ++ err = __get_user(magic2, (__u32 __user *) (((void __user *)fpstate) + + fx_sw_user->extended_size - + FP_XSTATE_MAGIC2_SIZE)); + if (err) +@@ -267,7 +267,7 @@ fx_only: + * the other extended state. + */ + xrstor_state(init_xstate_buf, pcntxt_mask & ~XSTATE_FPSSE); +- return fxrstor_checking((__force struct i387_fxsave_struct *)buf); ++ return fxrstor_checking((struct i387_fxsave_struct __force_kernel *)buf); + } + + /* +@@ -296,7 +296,7 @@ int restore_i387_xstate(void __user *buf) + if (use_xsave()) + err = restore_user_xstate(buf); + else +- err = fxrstor_checking((__force struct i387_fxsave_struct *) ++ err = fxrstor_checking((struct i387_fxsave_struct __force_kernel *) + buf); + if (unlikely(err)) { + /* +diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c +index 9fed5be..18fd595 100644 +--- a/arch/x86/kvm/cpuid.c ++++ b/arch/x86/kvm/cpuid.c +@@ -124,15 +124,20 @@ int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu, + struct kvm_cpuid2 *cpuid, + struct kvm_cpuid_entry2 __user *entries) + { +- int r; ++ int r, i; + + r = -E2BIG; + if (cpuid->nent > KVM_MAX_CPUID_ENTRIES) + goto out; + r = -EFAULT; +- if (copy_from_user(&vcpu->arch.cpuid_entries, entries, +- cpuid->nent * sizeof(struct kvm_cpuid_entry2))) ++ if (!access_ok(VERIFY_READ, entries, cpuid->nent * sizeof(struct kvm_cpuid_entry2))) + goto out; ++ for (i = 0; i < cpuid->nent; ++i) { ++ struct kvm_cpuid_entry2 cpuid_entry; ++ if (__copy_from_user(&cpuid_entry, entries + i, sizeof(cpuid_entry))) ++ goto out; ++ vcpu->arch.cpuid_entries[i] = cpuid_entry; ++ } + vcpu->arch.cpuid_nent = cpuid->nent; + kvm_apic_set_version(vcpu); + kvm_x86_ops->cpuid_update(vcpu); +@@ -147,15 +152,19 @@ int kvm_vcpu_ioctl_get_cpuid2(struct kvm_vcpu *vcpu, + struct kvm_cpuid2 *cpuid, + struct kvm_cpuid_entry2 __user *entries) + { +- int r; ++ int r, i; + + r = -E2BIG; + if (cpuid->nent < vcpu->arch.cpuid_nent) + goto out; + r = -EFAULT; +- if (copy_to_user(entries, &vcpu->arch.cpuid_entries, +- vcpu->arch.cpuid_nent * sizeof(struct kvm_cpuid_entry2))) ++ if (!access_ok(VERIFY_WRITE, entries, vcpu->arch.cpuid_nent * sizeof(struct kvm_cpuid_entry2))) + goto out; ++ for (i = 0; i < vcpu->arch.cpuid_nent; ++i) { ++ struct kvm_cpuid_entry2 cpuid_entry = vcpu->arch.cpuid_entries[i]; ++ if (__copy_to_user(entries + i, &cpuid_entry, sizeof(cpuid_entry))) ++ goto out; ++ } + return 0; + + out: +diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c +index 8375622..b7bca1a 100644 +--- a/arch/x86/kvm/emulate.c ++++ b/arch/x86/kvm/emulate.c +@@ -252,6 +252,7 @@ struct gprefix { + + #define ____emulate_2op(ctxt, _op, _x, _y, _suffix, _dsttype) \ + do { \ ++ unsigned long _tmp; \ + __asm__ __volatile__ ( \ + _PRE_EFLAGS("0", "4", "2") \ + _op _suffix " %"_x"3,%1; " \ +@@ -266,8 +267,6 @@ struct gprefix { + /* Raw emulation: instruction has two explicit operands. */ + #define __emulate_2op_nobyte(ctxt,_op,_wx,_wy,_lx,_ly,_qx,_qy) \ + do { \ +- unsigned long _tmp; \ +- \ + switch ((ctxt)->dst.bytes) { \ + case 2: \ + ____emulate_2op(ctxt,_op,_wx,_wy,"w",u16); \ +@@ -283,7 +282,6 @@ struct gprefix { + + #define __emulate_2op(ctxt,_op,_bx,_by,_wx,_wy,_lx,_ly,_qx,_qy) \ + do { \ +- unsigned long _tmp; \ + switch ((ctxt)->dst.bytes) { \ + case 1: \ + ____emulate_2op(ctxt,_op,_bx,_by,"b",u8); \ +diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c +index 8584322..17d5955 100644 +--- a/arch/x86/kvm/lapic.c ++++ b/arch/x86/kvm/lapic.c +@@ -54,7 +54,7 @@ + #define APIC_BUS_CYCLE_NS 1 + + /* #define apic_debug(fmt,arg...) printk(KERN_WARNING fmt,##arg) */ +-#define apic_debug(fmt, arg...) ++#define apic_debug(fmt, arg...) do {} while (0) + + #define APIC_LVT_NUM 6 + /* 14 is the version for Xeon and Pentium 8.4.8*/ +diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h +index df5a703..63748a7 100644 +--- a/arch/x86/kvm/paging_tmpl.h ++++ b/arch/x86/kvm/paging_tmpl.h +@@ -197,7 +197,7 @@ retry_walk: + if (unlikely(kvm_is_error_hva(host_addr))) + goto error; + +- ptep_user = (pt_element_t __user *)((void *)host_addr + offset); ++ ptep_user = (pt_element_t __force_user *)((void *)host_addr + offset); + if (unlikely(__copy_from_user(&pte, ptep_user, sizeof(pte)))) + goto error; + +diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c +index e334389..6839087 100644 +--- a/arch/x86/kvm/svm.c ++++ b/arch/x86/kvm/svm.c +@@ -3509,7 +3509,11 @@ static void reload_tss(struct kvm_vcpu *vcpu) + int cpu = raw_smp_processor_id(); + + struct svm_cpu_data *sd = per_cpu(svm_data, cpu); ++ ++ pax_open_kernel(); + sd->tss_desc->type = 9; /* available 32/64-bit TSS */ ++ pax_close_kernel(); ++ + load_TR_desc(); + } + +@@ -3887,6 +3891,10 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) + #endif + #endif + ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) ++ __set_fs(current_thread_info()->addr_limit); ++#endif ++ + reload_tss(vcpu); + + local_irq_disable(); +diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c +index 4ff0ab9..2ff68d3 100644 +--- a/arch/x86/kvm/vmx.c ++++ b/arch/x86/kvm/vmx.c +@@ -1303,7 +1303,11 @@ static void reload_tss(void) + struct desc_struct *descs; + + descs = (void *)gdt->address; ++ ++ pax_open_kernel(); + descs[GDT_ENTRY_TSS].type = 9; /* available TSS */ ++ pax_close_kernel(); ++ + load_TR_desc(); + } + +@@ -2625,8 +2629,11 @@ static __init int hardware_setup(void) + if (!cpu_has_vmx_flexpriority()) + flexpriority_enabled = 0; + +- if (!cpu_has_vmx_tpr_shadow()) +- kvm_x86_ops->update_cr8_intercept = NULL; ++ if (!cpu_has_vmx_tpr_shadow()) { ++ pax_open_kernel(); ++ *(void **)&kvm_x86_ops->update_cr8_intercept = NULL; ++ pax_close_kernel(); ++ } + + if (enable_ept && !cpu_has_vmx_ept_2m_page()) + kvm_disable_largepages(); +@@ -3642,7 +3649,7 @@ static void vmx_set_constant_host_state(void) + vmcs_writel(HOST_IDTR_BASE, dt.address); /* 22.2.4 */ + + asm("mov $.Lkvm_vmx_return, %0" : "=r"(tmpl)); +- vmcs_writel(HOST_RIP, tmpl); /* 22.2.5 */ ++ vmcs_writel(HOST_RIP, ktla_ktva(tmpl)); /* 22.2.5 */ + + rdmsr(MSR_IA32_SYSENTER_CS, low32, high32); + vmcs_write32(HOST_IA32_SYSENTER_CS, low32); +@@ -6180,6 +6187,12 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu) + "jmp .Lkvm_vmx_return \n\t" + ".Llaunched: " __ex(ASM_VMX_VMRESUME) "\n\t" + ".Lkvm_vmx_return: " ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++ "ljmp %[cs],$.Lkvm_vmx_return2\n\t" ++ ".Lkvm_vmx_return2: " ++#endif ++ + /* Save guest registers, load host registers, keep flags */ + "mov %0, %c[wordsize](%%"R"sp) \n\t" + "pop %0 \n\t" +@@ -6228,6 +6241,11 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu) + #endif + [cr2]"i"(offsetof(struct vcpu_vmx, vcpu.arch.cr2)), + [wordsize]"i"(sizeof(ulong)) ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++ ,[cs]"i"(__KERNEL_CS) ++#endif ++ + : "cc", "memory" + , R"ax", R"bx", R"di", R"si" + #ifdef CONFIG_X86_64 +@@ -6256,7 +6274,16 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu) + } + } + +- asm("mov %0, %%ds; mov %0, %%es" : : "r"(__USER_DS)); ++ asm("mov %0, %%ds; mov %0, %%es; mov %0, %%ss" : : "r"(__KERNEL_DS)); ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++ loadsegment(fs, __KERNEL_PERCPU); ++#endif ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) ++ __set_fs(current_thread_info()->addr_limit); ++#endif ++ + vmx->loaded_vmcs->launched = 1; + + vmx->exit_reason = vmcs_read32(VM_EXIT_REASON); +diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c +index 185a2b8..866d2a6 100644 +--- a/arch/x86/kvm/x86.c ++++ b/arch/x86/kvm/x86.c +@@ -1357,8 +1357,8 @@ static int xen_hvm_config(struct kvm_vcpu *vcpu, u64 data) + { + struct kvm *kvm = vcpu->kvm; + int lm = is_long_mode(vcpu); +- u8 *blob_addr = lm ? (u8 *)(long)kvm->arch.xen_hvm_config.blob_addr_64 +- : (u8 *)(long)kvm->arch.xen_hvm_config.blob_addr_32; ++ u8 __user *blob_addr = lm ? (u8 __user *)(long)kvm->arch.xen_hvm_config.blob_addr_64 ++ : (u8 __user *)(long)kvm->arch.xen_hvm_config.blob_addr_32; + u8 blob_size = lm ? kvm->arch.xen_hvm_config.blob_size_64 + : kvm->arch.xen_hvm_config.blob_size_32; + u32 page_num = data & ~PAGE_MASK; +@@ -2213,6 +2213,8 @@ long kvm_arch_dev_ioctl(struct file *filp, + if (n < msr_list.nmsrs) + goto out; + r = -EFAULT; ++ if (num_msrs_to_save > ARRAY_SIZE(msrs_to_save)) ++ goto out; + if (copy_to_user(user_msr_list->indices, &msrs_to_save, + num_msrs_to_save * sizeof(u32))) + goto out; +@@ -2338,7 +2340,7 @@ static int kvm_vcpu_ioctl_set_lapic(struct kvm_vcpu *vcpu, + static int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, + struct kvm_interrupt *irq) + { +- if (irq->irq < 0 || irq->irq >= 256) ++ if (irq->irq >= 256) + return -EINVAL; + if (irqchip_in_kernel(vcpu->kvm)) + return -ENXIO; +@@ -4860,7 +4862,7 @@ static void kvm_set_mmio_spte_mask(void) + kvm_mmu_set_mmio_spte_mask(mask); + } + +-int kvm_arch_init(void *opaque) ++int kvm_arch_init(const void *opaque) + { + int r; + struct kvm_x86_ops *ops = (struct kvm_x86_ops *)opaque; +diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c +index 642d880..44e0f3f 100644 +--- a/arch/x86/lguest/boot.c ++++ b/arch/x86/lguest/boot.c +@@ -1200,9 +1200,10 @@ static __init int early_put_chars(u32 vtermno, const char *buf, int count) + * Rebooting also tells the Host we're finished, but the RESTART flag tells the + * Launcher to reboot us. + */ +-static void lguest_restart(char *reason) ++static __noreturn void lguest_restart(char *reason) + { + hcall(LHCALL_SHUTDOWN, __pa(reason), LGUEST_SHUTDOWN_RESTART, 0, 0); ++ BUG(); + } + + /*G:050 +diff --git a/arch/x86/lib/atomic64_386_32.S b/arch/x86/lib/atomic64_386_32.S +index 00933d5..3a64af9 100644 +--- a/arch/x86/lib/atomic64_386_32.S ++++ b/arch/x86/lib/atomic64_386_32.S +@@ -48,6 +48,10 @@ BEGIN(read) + movl (v), %eax + movl 4(v), %edx + RET_ENDP ++BEGIN(read_unchecked) ++ movl (v), %eax ++ movl 4(v), %edx ++RET_ENDP + #undef v + + #define v %esi +@@ -55,6 +59,10 @@ BEGIN(set) + movl %ebx, (v) + movl %ecx, 4(v) + RET_ENDP ++BEGIN(set_unchecked) ++ movl %ebx, (v) ++ movl %ecx, 4(v) ++RET_ENDP + #undef v + + #define v %esi +@@ -70,6 +78,20 @@ RET_ENDP + BEGIN(add) + addl %eax, (v) + adcl %edx, 4(v) ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ jno 0f ++ subl %eax, (v) ++ sbbl %edx, 4(v) ++ int $4 ++0: ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++RET_ENDP ++BEGIN(add_unchecked) ++ addl %eax, (v) ++ adcl %edx, 4(v) + RET_ENDP + #undef v + +@@ -77,6 +99,24 @@ RET_ENDP + BEGIN(add_return) + addl (v), %eax + adcl 4(v), %edx ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ into ++1234: ++ _ASM_EXTABLE(1234b, 2f) ++#endif ++ ++ movl %eax, (v) ++ movl %edx, 4(v) ++ ++#ifdef CONFIG_PAX_REFCOUNT ++2: ++#endif ++ ++RET_ENDP ++BEGIN(add_return_unchecked) ++ addl (v), %eax ++ adcl 4(v), %edx + movl %eax, (v) + movl %edx, 4(v) + RET_ENDP +@@ -86,6 +126,20 @@ RET_ENDP + BEGIN(sub) + subl %eax, (v) + sbbl %edx, 4(v) ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ jno 0f ++ addl %eax, (v) ++ adcl %edx, 4(v) ++ int $4 ++0: ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++RET_ENDP ++BEGIN(sub_unchecked) ++ subl %eax, (v) ++ sbbl %edx, 4(v) + RET_ENDP + #undef v + +@@ -96,6 +150,27 @@ BEGIN(sub_return) + sbbl $0, %edx + addl (v), %eax + adcl 4(v), %edx ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ into ++1234: ++ _ASM_EXTABLE(1234b, 2f) ++#endif ++ ++ movl %eax, (v) ++ movl %edx, 4(v) ++ ++#ifdef CONFIG_PAX_REFCOUNT ++2: ++#endif ++ ++RET_ENDP ++BEGIN(sub_return_unchecked) ++ negl %edx ++ negl %eax ++ sbbl $0, %edx ++ addl (v), %eax ++ adcl 4(v), %edx + movl %eax, (v) + movl %edx, 4(v) + RET_ENDP +@@ -105,6 +180,20 @@ RET_ENDP + BEGIN(inc) + addl $1, (v) + adcl $0, 4(v) ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ jno 0f ++ subl $1, (v) ++ sbbl $0, 4(v) ++ int $4 ++0: ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++RET_ENDP ++BEGIN(inc_unchecked) ++ addl $1, (v) ++ adcl $0, 4(v) + RET_ENDP + #undef v + +@@ -114,6 +203,26 @@ BEGIN(inc_return) + movl 4(v), %edx + addl $1, %eax + adcl $0, %edx ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ into ++1234: ++ _ASM_EXTABLE(1234b, 2f) ++#endif ++ ++ movl %eax, (v) ++ movl %edx, 4(v) ++ ++#ifdef CONFIG_PAX_REFCOUNT ++2: ++#endif ++ ++RET_ENDP ++BEGIN(inc_return_unchecked) ++ movl (v), %eax ++ movl 4(v), %edx ++ addl $1, %eax ++ adcl $0, %edx + movl %eax, (v) + movl %edx, 4(v) + RET_ENDP +@@ -123,6 +232,20 @@ RET_ENDP + BEGIN(dec) + subl $1, (v) + sbbl $0, 4(v) ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ jno 0f ++ addl $1, (v) ++ adcl $0, 4(v) ++ int $4 ++0: ++ _ASM_EXTABLE(0b, 0b) ++#endif ++ ++RET_ENDP ++BEGIN(dec_unchecked) ++ subl $1, (v) ++ sbbl $0, 4(v) + RET_ENDP + #undef v + +@@ -132,6 +255,26 @@ BEGIN(dec_return) + movl 4(v), %edx + subl $1, %eax + sbbl $0, %edx ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ into ++1234: ++ _ASM_EXTABLE(1234b, 2f) ++#endif ++ ++ movl %eax, (v) ++ movl %edx, 4(v) ++ ++#ifdef CONFIG_PAX_REFCOUNT ++2: ++#endif ++ ++RET_ENDP ++BEGIN(dec_return_unchecked) ++ movl (v), %eax ++ movl 4(v), %edx ++ subl $1, %eax ++ sbbl $0, %edx + movl %eax, (v) + movl %edx, 4(v) + RET_ENDP +@@ -143,6 +286,13 @@ BEGIN(add_unless) + adcl %edx, %edi + addl (v), %eax + adcl 4(v), %edx ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ into ++1234: ++ _ASM_EXTABLE(1234b, 2f) ++#endif ++ + cmpl %eax, %ecx + je 3f + 1: +@@ -168,6 +318,13 @@ BEGIN(inc_not_zero) + 1: + addl $1, %eax + adcl $0, %edx ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ into ++1234: ++ _ASM_EXTABLE(1234b, 2f) ++#endif ++ + movl %eax, (v) + movl %edx, 4(v) + movl $1, %eax +@@ -186,6 +343,13 @@ BEGIN(dec_if_positive) + movl 4(v), %edx + subl $1, %eax + sbbl $0, %edx ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ into ++1234: ++ _ASM_EXTABLE(1234b, 1f) ++#endif ++ + js 1f + movl %eax, (v) + movl %edx, 4(v) +diff --git a/arch/x86/lib/atomic64_cx8_32.S b/arch/x86/lib/atomic64_cx8_32.S +index f5cc9eb..51fa319 100644 +--- a/arch/x86/lib/atomic64_cx8_32.S ++++ b/arch/x86/lib/atomic64_cx8_32.S +@@ -35,10 +35,20 @@ ENTRY(atomic64_read_cx8) + CFI_STARTPROC + + read64 %ecx ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(atomic64_read_cx8) + ++ENTRY(atomic64_read_unchecked_cx8) ++ CFI_STARTPROC ++ ++ read64 %ecx ++ pax_force_retaddr ++ ret ++ CFI_ENDPROC ++ENDPROC(atomic64_read_unchecked_cx8) ++ + ENTRY(atomic64_set_cx8) + CFI_STARTPROC + +@@ -48,10 +58,25 @@ ENTRY(atomic64_set_cx8) + cmpxchg8b (%esi) + jne 1b + ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(atomic64_set_cx8) + ++ENTRY(atomic64_set_unchecked_cx8) ++ CFI_STARTPROC ++ ++1: ++/* we don't need LOCK_PREFIX since aligned 64-bit writes ++ * are atomic on 586 and newer */ ++ cmpxchg8b (%esi) ++ jne 1b ++ ++ pax_force_retaddr ++ ret ++ CFI_ENDPROC ++ENDPROC(atomic64_set_unchecked_cx8) ++ + ENTRY(atomic64_xchg_cx8) + CFI_STARTPROC + +@@ -60,12 +85,13 @@ ENTRY(atomic64_xchg_cx8) + cmpxchg8b (%esi) + jne 1b + ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(atomic64_xchg_cx8) + +-.macro addsub_return func ins insc +-ENTRY(atomic64_\func\()_return_cx8) ++.macro addsub_return func ins insc unchecked="" ++ENTRY(atomic64_\func\()_return\unchecked\()_cx8) + CFI_STARTPROC + SAVE ebp + SAVE ebx +@@ -82,27 +108,44 @@ ENTRY(atomic64_\func\()_return_cx8) + movl %edx, %ecx + \ins\()l %esi, %ebx + \insc\()l %edi, %ecx ++ ++.ifb \unchecked ++#ifdef CONFIG_PAX_REFCOUNT ++ into ++2: ++ _ASM_EXTABLE(2b, 3f) ++#endif ++.endif ++ + LOCK_PREFIX + cmpxchg8b (%ebp) + jne 1b +- +-10: + movl %ebx, %eax + movl %ecx, %edx ++ ++.ifb \unchecked ++#ifdef CONFIG_PAX_REFCOUNT ++3: ++#endif ++.endif ++ + RESTORE edi + RESTORE esi + RESTORE ebx + RESTORE ebp ++ pax_force_retaddr + ret + CFI_ENDPROC +-ENDPROC(atomic64_\func\()_return_cx8) ++ENDPROC(atomic64_\func\()_return\unchecked\()_cx8) + .endm + + addsub_return add add adc + addsub_return sub sub sbb ++addsub_return add add adc _unchecked ++addsub_return sub sub sbb _unchecked + +-.macro incdec_return func ins insc +-ENTRY(atomic64_\func\()_return_cx8) ++.macro incdec_return func ins insc unchecked="" ++ENTRY(atomic64_\func\()_return\unchecked\()_cx8) + CFI_STARTPROC + SAVE ebx + +@@ -112,21 +155,39 @@ ENTRY(atomic64_\func\()_return_cx8) + movl %edx, %ecx + \ins\()l $1, %ebx + \insc\()l $0, %ecx ++ ++.ifb \unchecked ++#ifdef CONFIG_PAX_REFCOUNT ++ into ++2: ++ _ASM_EXTABLE(2b, 3f) ++#endif ++.endif ++ + LOCK_PREFIX + cmpxchg8b (%esi) + jne 1b + +-10: + movl %ebx, %eax + movl %ecx, %edx ++ ++.ifb \unchecked ++#ifdef CONFIG_PAX_REFCOUNT ++3: ++#endif ++.endif ++ + RESTORE ebx ++ pax_force_retaddr + ret + CFI_ENDPROC +-ENDPROC(atomic64_\func\()_return_cx8) ++ENDPROC(atomic64_\func\()_return\unchecked\()_cx8) + .endm + + incdec_return inc add adc + incdec_return dec sub sbb ++incdec_return inc add adc _unchecked ++incdec_return dec sub sbb _unchecked + + ENTRY(atomic64_dec_if_positive_cx8) + CFI_STARTPROC +@@ -138,6 +199,13 @@ ENTRY(atomic64_dec_if_positive_cx8) + movl %edx, %ecx + subl $1, %ebx + sbb $0, %ecx ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ into ++1234: ++ _ASM_EXTABLE(1234b, 2f) ++#endif ++ + js 2f + LOCK_PREFIX + cmpxchg8b (%esi) +@@ -147,6 +215,7 @@ ENTRY(atomic64_dec_if_positive_cx8) + movl %ebx, %eax + movl %ecx, %edx + RESTORE ebx ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(atomic64_dec_if_positive_cx8) +@@ -171,6 +240,13 @@ ENTRY(atomic64_add_unless_cx8) + movl %edx, %ecx + addl %ebp, %ebx + adcl %edi, %ecx ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ into ++1234: ++ _ASM_EXTABLE(1234b, 3f) ++#endif ++ + LOCK_PREFIX + cmpxchg8b (%esi) + jne 1b +@@ -181,6 +257,7 @@ ENTRY(atomic64_add_unless_cx8) + CFI_ADJUST_CFA_OFFSET -8 + RESTORE ebx + RESTORE ebp ++ pax_force_retaddr + ret + 4: + cmpl %edx, 4(%esp) +@@ -203,6 +280,13 @@ ENTRY(atomic64_inc_not_zero_cx8) + xorl %ecx, %ecx + addl $1, %ebx + adcl %edx, %ecx ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ into ++1234: ++ _ASM_EXTABLE(1234b, 3f) ++#endif ++ + LOCK_PREFIX + cmpxchg8b (%esi) + jne 1b +@@ -210,6 +294,7 @@ ENTRY(atomic64_inc_not_zero_cx8) + movl $1, %eax + 3: + RESTORE ebx ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(atomic64_inc_not_zero_cx8) +diff --git a/arch/x86/lib/checksum_32.S b/arch/x86/lib/checksum_32.S +index 78d16a5..fbcf666 100644 +--- a/arch/x86/lib/checksum_32.S ++++ b/arch/x86/lib/checksum_32.S +@@ -28,7 +28,8 @@ + #include <linux/linkage.h> + #include <asm/dwarf2.h> + #include <asm/errno.h> +- ++#include <asm/segment.h> ++ + /* + * computes a partial checksum, e.g. for TCP/UDP fragments + */ +@@ -296,9 +297,24 @@ unsigned int csum_partial_copy_generic (const char *src, char *dst, + + #define ARGBASE 16 + #define FP 12 +- +-ENTRY(csum_partial_copy_generic) ++ ++ENTRY(csum_partial_copy_generic_to_user) + CFI_STARTPROC ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ pushl_cfi %gs ++ popl_cfi %es ++ jmp csum_partial_copy_generic ++#endif ++ ++ENTRY(csum_partial_copy_generic_from_user) ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ pushl_cfi %gs ++ popl_cfi %ds ++#endif ++ ++ENTRY(csum_partial_copy_generic) + subl $4,%esp + CFI_ADJUST_CFA_OFFSET 4 + pushl_cfi %edi +@@ -320,7 +336,7 @@ ENTRY(csum_partial_copy_generic) + jmp 4f + SRC(1: movw (%esi), %bx ) + addl $2, %esi +-DST( movw %bx, (%edi) ) ++DST( movw %bx, %es:(%edi) ) + addl $2, %edi + addw %bx, %ax + adcl $0, %eax +@@ -332,30 +348,30 @@ DST( movw %bx, (%edi) ) + SRC(1: movl (%esi), %ebx ) + SRC( movl 4(%esi), %edx ) + adcl %ebx, %eax +-DST( movl %ebx, (%edi) ) ++DST( movl %ebx, %es:(%edi) ) + adcl %edx, %eax +-DST( movl %edx, 4(%edi) ) ++DST( movl %edx, %es:4(%edi) ) + + SRC( movl 8(%esi), %ebx ) + SRC( movl 12(%esi), %edx ) + adcl %ebx, %eax +-DST( movl %ebx, 8(%edi) ) ++DST( movl %ebx, %es:8(%edi) ) + adcl %edx, %eax +-DST( movl %edx, 12(%edi) ) ++DST( movl %edx, %es:12(%edi) ) + + SRC( movl 16(%esi), %ebx ) + SRC( movl 20(%esi), %edx ) + adcl %ebx, %eax +-DST( movl %ebx, 16(%edi) ) ++DST( movl %ebx, %es:16(%edi) ) + adcl %edx, %eax +-DST( movl %edx, 20(%edi) ) ++DST( movl %edx, %es:20(%edi) ) + + SRC( movl 24(%esi), %ebx ) + SRC( movl 28(%esi), %edx ) + adcl %ebx, %eax +-DST( movl %ebx, 24(%edi) ) ++DST( movl %ebx, %es:24(%edi) ) + adcl %edx, %eax +-DST( movl %edx, 28(%edi) ) ++DST( movl %edx, %es:28(%edi) ) + + lea 32(%esi), %esi + lea 32(%edi), %edi +@@ -369,7 +385,7 @@ DST( movl %edx, 28(%edi) ) + shrl $2, %edx # This clears CF + SRC(3: movl (%esi), %ebx ) + adcl %ebx, %eax +-DST( movl %ebx, (%edi) ) ++DST( movl %ebx, %es:(%edi) ) + lea 4(%esi), %esi + lea 4(%edi), %edi + dec %edx +@@ -381,12 +397,12 @@ DST( movl %ebx, (%edi) ) + jb 5f + SRC( movw (%esi), %cx ) + leal 2(%esi), %esi +-DST( movw %cx, (%edi) ) ++DST( movw %cx, %es:(%edi) ) + leal 2(%edi), %edi + je 6f + shll $16,%ecx + SRC(5: movb (%esi), %cl ) +-DST( movb %cl, (%edi) ) ++DST( movb %cl, %es:(%edi) ) + 6: addl %ecx, %eax + adcl $0, %eax + 7: +@@ -397,7 +413,7 @@ DST( movb %cl, (%edi) ) + + 6001: + movl ARGBASE+20(%esp), %ebx # src_err_ptr +- movl $-EFAULT, (%ebx) ++ movl $-EFAULT, %ss:(%ebx) + + # zero the complete destination - computing the rest + # is too much work +@@ -410,11 +426,15 @@ DST( movb %cl, (%edi) ) + + 6002: + movl ARGBASE+24(%esp), %ebx # dst_err_ptr +- movl $-EFAULT,(%ebx) ++ movl $-EFAULT,%ss:(%ebx) + jmp 5000b + + .previous + ++ pushl_cfi %ss ++ popl_cfi %ds ++ pushl_cfi %ss ++ popl_cfi %es + popl_cfi %ebx + CFI_RESTORE ebx + popl_cfi %esi +@@ -424,26 +444,43 @@ DST( movb %cl, (%edi) ) + popl_cfi %ecx # equivalent to addl $4,%esp + ret + CFI_ENDPROC +-ENDPROC(csum_partial_copy_generic) ++ENDPROC(csum_partial_copy_generic_to_user) + + #else + + /* Version for PentiumII/PPro */ + + #define ROUND1(x) \ ++ nop; nop; nop; \ + SRC(movl x(%esi), %ebx ) ; \ + addl %ebx, %eax ; \ +- DST(movl %ebx, x(%edi) ) ; ++ DST(movl %ebx, %es:x(%edi)) ; + + #define ROUND(x) \ ++ nop; nop; nop; \ + SRC(movl x(%esi), %ebx ) ; \ + adcl %ebx, %eax ; \ +- DST(movl %ebx, x(%edi) ) ; ++ DST(movl %ebx, %es:x(%edi)) ; + + #define ARGBASE 12 +- +-ENTRY(csum_partial_copy_generic) ++ ++ENTRY(csum_partial_copy_generic_to_user) + CFI_STARTPROC ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ pushl_cfi %gs ++ popl_cfi %es ++ jmp csum_partial_copy_generic ++#endif ++ ++ENTRY(csum_partial_copy_generic_from_user) ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ pushl_cfi %gs ++ popl_cfi %ds ++#endif ++ ++ENTRY(csum_partial_copy_generic) + pushl_cfi %ebx + CFI_REL_OFFSET ebx, 0 + pushl_cfi %edi +@@ -464,7 +501,7 @@ ENTRY(csum_partial_copy_generic) + subl %ebx, %edi + lea -1(%esi),%edx + andl $-32,%edx +- lea 3f(%ebx,%ebx), %ebx ++ lea 3f(%ebx,%ebx,2), %ebx + testl %esi, %esi + jmp *%ebx + 1: addl $64,%esi +@@ -485,19 +522,19 @@ ENTRY(csum_partial_copy_generic) + jb 5f + SRC( movw (%esi), %dx ) + leal 2(%esi), %esi +-DST( movw %dx, (%edi) ) ++DST( movw %dx, %es:(%edi) ) + leal 2(%edi), %edi + je 6f + shll $16,%edx + 5: + SRC( movb (%esi), %dl ) +-DST( movb %dl, (%edi) ) ++DST( movb %dl, %es:(%edi) ) + 6: addl %edx, %eax + adcl $0, %eax + 7: + .section .fixup, "ax" + 6001: movl ARGBASE+20(%esp), %ebx # src_err_ptr +- movl $-EFAULT, (%ebx) ++ movl $-EFAULT, %ss:(%ebx) + # zero the complete destination (computing the rest is too much work) + movl ARGBASE+8(%esp),%edi # dst + movl ARGBASE+12(%esp),%ecx # len +@@ -505,10 +542,17 @@ DST( movb %dl, (%edi) ) + rep; stosb + jmp 7b + 6002: movl ARGBASE+24(%esp), %ebx # dst_err_ptr +- movl $-EFAULT, (%ebx) ++ movl $-EFAULT, %ss:(%ebx) + jmp 7b + .previous + ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ pushl_cfi %ss ++ popl_cfi %ds ++ pushl_cfi %ss ++ popl_cfi %es ++#endif ++ + popl_cfi %esi + CFI_RESTORE esi + popl_cfi %edi +@@ -517,7 +561,7 @@ DST( movb %dl, (%edi) ) + CFI_RESTORE ebx + ret + CFI_ENDPROC +-ENDPROC(csum_partial_copy_generic) ++ENDPROC(csum_partial_copy_generic_to_user) + + #undef ROUND + #undef ROUND1 +diff --git a/arch/x86/lib/clear_page_64.S b/arch/x86/lib/clear_page_64.S +index f2145cf..cea889d 100644 +--- a/arch/x86/lib/clear_page_64.S ++++ b/arch/x86/lib/clear_page_64.S +@@ -11,6 +11,7 @@ ENTRY(clear_page_c) + movl $4096/8,%ecx + xorl %eax,%eax + rep stosq ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(clear_page_c) +@@ -20,6 +21,7 @@ ENTRY(clear_page_c_e) + movl $4096,%ecx + xorl %eax,%eax + rep stosb ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(clear_page_c_e) +@@ -43,6 +45,7 @@ ENTRY(clear_page) + leaq 64(%rdi),%rdi + jnz .Lloop + nop ++ pax_force_retaddr + ret + CFI_ENDPROC + .Lclear_page_end: +@@ -58,7 +61,7 @@ ENDPROC(clear_page) + + #include <asm/cpufeature.h> + +- .section .altinstr_replacement,"ax" ++ .section .altinstr_replacement,"a" + 1: .byte 0xeb /* jmp <disp8> */ + .byte (clear_page_c - clear_page) - (2f - 1b) /* offset */ + 2: .byte 0xeb /* jmp <disp8> */ +diff --git a/arch/x86/lib/cmpxchg16b_emu.S b/arch/x86/lib/cmpxchg16b_emu.S +index 1e572c5..2a162cd 100644 +--- a/arch/x86/lib/cmpxchg16b_emu.S ++++ b/arch/x86/lib/cmpxchg16b_emu.S +@@ -53,11 +53,13 @@ this_cpu_cmpxchg16b_emu: + + popf + mov $1, %al ++ pax_force_retaddr + ret + + not_same: + popf + xor %al,%al ++ pax_force_retaddr + ret + + CFI_ENDPROC +diff --git a/arch/x86/lib/copy_page_64.S b/arch/x86/lib/copy_page_64.S +index 6b34d04..dccb07f 100644 +--- a/arch/x86/lib/copy_page_64.S ++++ b/arch/x86/lib/copy_page_64.S +@@ -9,6 +9,7 @@ copy_page_c: + CFI_STARTPROC + movl $4096/8,%ecx + rep movsq ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(copy_page_c) +@@ -20,12 +21,14 @@ ENDPROC(copy_page_c) + + ENTRY(copy_page) + CFI_STARTPROC +- subq $2*8,%rsp +- CFI_ADJUST_CFA_OFFSET 2*8 ++ subq $3*8,%rsp ++ CFI_ADJUST_CFA_OFFSET 3*8 + movq %rbx,(%rsp) + CFI_REL_OFFSET rbx, 0 + movq %r12,1*8(%rsp) + CFI_REL_OFFSET r12, 1*8 ++ movq %r13,2*8(%rsp) ++ CFI_REL_OFFSET r13, 2*8 + + movl $(4096/64)-5,%ecx + .p2align 4 +@@ -37,7 +40,7 @@ ENTRY(copy_page) + movq 16 (%rsi), %rdx + movq 24 (%rsi), %r8 + movq 32 (%rsi), %r9 +- movq 40 (%rsi), %r10 ++ movq 40 (%rsi), %r13 + movq 48 (%rsi), %r11 + movq 56 (%rsi), %r12 + +@@ -48,7 +51,7 @@ ENTRY(copy_page) + movq %rdx, 16 (%rdi) + movq %r8, 24 (%rdi) + movq %r9, 32 (%rdi) +- movq %r10, 40 (%rdi) ++ movq %r13, 40 (%rdi) + movq %r11, 48 (%rdi) + movq %r12, 56 (%rdi) + +@@ -67,7 +70,7 @@ ENTRY(copy_page) + movq 16 (%rsi), %rdx + movq 24 (%rsi), %r8 + movq 32 (%rsi), %r9 +- movq 40 (%rsi), %r10 ++ movq 40 (%rsi), %r13 + movq 48 (%rsi), %r11 + movq 56 (%rsi), %r12 + +@@ -76,7 +79,7 @@ ENTRY(copy_page) + movq %rdx, 16 (%rdi) + movq %r8, 24 (%rdi) + movq %r9, 32 (%rdi) +- movq %r10, 40 (%rdi) ++ movq %r13, 40 (%rdi) + movq %r11, 48 (%rdi) + movq %r12, 56 (%rdi) + +@@ -89,8 +92,11 @@ ENTRY(copy_page) + CFI_RESTORE rbx + movq 1*8(%rsp),%r12 + CFI_RESTORE r12 +- addq $2*8,%rsp +- CFI_ADJUST_CFA_OFFSET -2*8 ++ movq 2*8(%rsp),%r13 ++ CFI_RESTORE r13 ++ addq $3*8,%rsp ++ CFI_ADJUST_CFA_OFFSET -3*8 ++ pax_force_retaddr + ret + .Lcopy_page_end: + CFI_ENDPROC +@@ -101,7 +107,7 @@ ENDPROC(copy_page) + + #include <asm/cpufeature.h> + +- .section .altinstr_replacement,"ax" ++ .section .altinstr_replacement,"a" + 1: .byte 0xeb /* jmp <disp8> */ + .byte (copy_page_c - copy_page) - (2f - 1b) /* offset */ + 2: +diff --git a/arch/x86/lib/copy_user_64.S b/arch/x86/lib/copy_user_64.S +index 0248402..821c786 100644 +--- a/arch/x86/lib/copy_user_64.S ++++ b/arch/x86/lib/copy_user_64.S +@@ -16,6 +16,7 @@ + #include <asm/thread_info.h> + #include <asm/cpufeature.h> + #include <asm/alternative-asm.h> ++#include <asm/pgtable.h> + + /* + * By placing feature2 after feature1 in altinstructions section, we logically +@@ -29,7 +30,7 @@ + .byte 0xe9 /* 32bit jump */ + .long \orig-1f /* by default jump to orig */ + 1: +- .section .altinstr_replacement,"ax" ++ .section .altinstr_replacement,"a" + 2: .byte 0xe9 /* near jump with 32bit immediate */ + .long \alt1-1b /* offset */ /* or alternatively to alt1 */ + 3: .byte 0xe9 /* near jump with 32bit immediate */ +@@ -71,47 +72,20 @@ + #endif + .endm + +-/* Standard copy_to_user with segment limit checking */ +-ENTRY(_copy_to_user) +- CFI_STARTPROC +- GET_THREAD_INFO(%rax) +- movq %rdi,%rcx +- addq %rdx,%rcx +- jc bad_to_user +- cmpq TI_addr_limit(%rax),%rcx +- ja bad_to_user +- ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,X86_FEATURE_ERMS, \ +- copy_user_generic_unrolled,copy_user_generic_string, \ +- copy_user_enhanced_fast_string +- CFI_ENDPROC +-ENDPROC(_copy_to_user) +- +-/* Standard copy_from_user with segment limit checking */ +-ENTRY(_copy_from_user) +- CFI_STARTPROC +- GET_THREAD_INFO(%rax) +- movq %rsi,%rcx +- addq %rdx,%rcx +- jc bad_from_user +- cmpq TI_addr_limit(%rax),%rcx +- ja bad_from_user +- ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,X86_FEATURE_ERMS, \ +- copy_user_generic_unrolled,copy_user_generic_string, \ +- copy_user_enhanced_fast_string +- CFI_ENDPROC +-ENDPROC(_copy_from_user) +- + .section .fixup,"ax" + /* must zero dest */ + ENTRY(bad_from_user) + bad_from_user: + CFI_STARTPROC ++ testl %edx,%edx ++ js bad_to_user + movl %edx,%ecx + xorl %eax,%eax + rep + stosb + bad_to_user: + movl %edx,%eax ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(bad_from_user) +@@ -141,19 +115,19 @@ ENTRY(copy_user_generic_unrolled) + jz 17f + 1: movq (%rsi),%r8 + 2: movq 1*8(%rsi),%r9 +-3: movq 2*8(%rsi),%r10 ++3: movq 2*8(%rsi),%rax + 4: movq 3*8(%rsi),%r11 + 5: movq %r8,(%rdi) + 6: movq %r9,1*8(%rdi) +-7: movq %r10,2*8(%rdi) ++7: movq %rax,2*8(%rdi) + 8: movq %r11,3*8(%rdi) + 9: movq 4*8(%rsi),%r8 + 10: movq 5*8(%rsi),%r9 +-11: movq 6*8(%rsi),%r10 ++11: movq 6*8(%rsi),%rax + 12: movq 7*8(%rsi),%r11 + 13: movq %r8,4*8(%rdi) + 14: movq %r9,5*8(%rdi) +-15: movq %r10,6*8(%rdi) ++15: movq %rax,6*8(%rdi) + 16: movq %r11,7*8(%rdi) + leaq 64(%rsi),%rsi + leaq 64(%rdi),%rdi +@@ -179,6 +153,7 @@ ENTRY(copy_user_generic_unrolled) + decl %ecx + jnz 21b + 23: xor %eax,%eax ++ pax_force_retaddr + ret + + .section .fixup,"ax" +@@ -251,6 +226,7 @@ ENTRY(copy_user_generic_string) + 3: rep + movsb + 4: xorl %eax,%eax ++ pax_force_retaddr + ret + + .section .fixup,"ax" +@@ -287,6 +263,7 @@ ENTRY(copy_user_enhanced_fast_string) + 1: rep + movsb + 2: xorl %eax,%eax ++ pax_force_retaddr + ret + + .section .fixup,"ax" +diff --git a/arch/x86/lib/copy_user_nocache_64.S b/arch/x86/lib/copy_user_nocache_64.S +index cb0c112..e3a6895 100644 +--- a/arch/x86/lib/copy_user_nocache_64.S ++++ b/arch/x86/lib/copy_user_nocache_64.S +@@ -8,12 +8,14 @@ + + #include <linux/linkage.h> + #include <asm/dwarf2.h> ++#include <asm/alternative-asm.h> + + #define FIX_ALIGNMENT 1 + + #include <asm/current.h> + #include <asm/asm-offsets.h> + #include <asm/thread_info.h> ++#include <asm/pgtable.h> + + .macro ALIGN_DESTINATION + #ifdef FIX_ALIGNMENT +@@ -50,6 +52,15 @@ + */ + ENTRY(__copy_user_nocache) + CFI_STARTPROC ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ mov $PAX_USER_SHADOW_BASE,%rcx ++ cmp %rcx,%rsi ++ jae 1f ++ add %rcx,%rsi ++1: ++#endif ++ + cmpl $8,%edx + jb 20f /* less then 8 bytes, go to byte copy loop */ + ALIGN_DESTINATION +@@ -59,19 +70,19 @@ ENTRY(__copy_user_nocache) + jz 17f + 1: movq (%rsi),%r8 + 2: movq 1*8(%rsi),%r9 +-3: movq 2*8(%rsi),%r10 ++3: movq 2*8(%rsi),%rax + 4: movq 3*8(%rsi),%r11 + 5: movnti %r8,(%rdi) + 6: movnti %r9,1*8(%rdi) +-7: movnti %r10,2*8(%rdi) ++7: movnti %rax,2*8(%rdi) + 8: movnti %r11,3*8(%rdi) + 9: movq 4*8(%rsi),%r8 + 10: movq 5*8(%rsi),%r9 +-11: movq 6*8(%rsi),%r10 ++11: movq 6*8(%rsi),%rax + 12: movq 7*8(%rsi),%r11 + 13: movnti %r8,4*8(%rdi) + 14: movnti %r9,5*8(%rdi) +-15: movnti %r10,6*8(%rdi) ++15: movnti %rax,6*8(%rdi) + 16: movnti %r11,7*8(%rdi) + leaq 64(%rsi),%rsi + leaq 64(%rdi),%rdi +@@ -98,6 +109,7 @@ ENTRY(__copy_user_nocache) + jnz 21b + 23: xorl %eax,%eax + sfence ++ pax_force_retaddr + ret + + .section .fixup,"ax" +diff --git a/arch/x86/lib/csum-copy_64.S b/arch/x86/lib/csum-copy_64.S +index fb903b7..c92b7f7 100644 +--- a/arch/x86/lib/csum-copy_64.S ++++ b/arch/x86/lib/csum-copy_64.S +@@ -8,6 +8,7 @@ + #include <linux/linkage.h> + #include <asm/dwarf2.h> + #include <asm/errno.h> ++#include <asm/alternative-asm.h> + + /* + * Checksum copy with exception handling. +@@ -228,6 +229,7 @@ ENTRY(csum_partial_copy_generic) + CFI_RESTORE rbp + addq $7*8, %rsp + CFI_ADJUST_CFA_OFFSET -7*8 ++ pax_force_retaddr 0, 1 + ret + CFI_RESTORE_STATE + +diff --git a/arch/x86/lib/csum-wrappers_64.c b/arch/x86/lib/csum-wrappers_64.c +index 459b58a..9570bc7 100644 +--- a/arch/x86/lib/csum-wrappers_64.c ++++ b/arch/x86/lib/csum-wrappers_64.c +@@ -52,7 +52,13 @@ csum_partial_copy_from_user(const void __user *src, void *dst, + len -= 2; + } + } +- isum = csum_partial_copy_generic((__force const void *)src, ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if ((unsigned long)src < PAX_USER_SHADOW_BASE) ++ src += PAX_USER_SHADOW_BASE; ++#endif ++ ++ isum = csum_partial_copy_generic((const void __force_kernel *)src, + dst, len, isum, errp, NULL); + if (unlikely(*errp)) + goto out_err; +@@ -105,7 +111,13 @@ csum_partial_copy_to_user(const void *src, void __user *dst, + } + + *errp = 0; +- return csum_partial_copy_generic(src, (void __force *)dst, ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if ((unsigned long)dst < PAX_USER_SHADOW_BASE) ++ dst += PAX_USER_SHADOW_BASE; ++#endif ++ ++ return csum_partial_copy_generic(src, (void __force_kernel *)dst, + len, isum, NULL, errp); + } + EXPORT_SYMBOL(csum_partial_copy_to_user); +diff --git a/arch/x86/lib/getuser.S b/arch/x86/lib/getuser.S +index 51f1504..ddac4c1 100644 +--- a/arch/x86/lib/getuser.S ++++ b/arch/x86/lib/getuser.S +@@ -33,15 +33,38 @@ + #include <asm/asm-offsets.h> + #include <asm/thread_info.h> + #include <asm/asm.h> ++#include <asm/segment.h> ++#include <asm/pgtable.h> ++#include <asm/alternative-asm.h> ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) ++#define __copyuser_seg gs; ++#else ++#define __copyuser_seg ++#endif + + .text + ENTRY(__get_user_1) + CFI_STARTPROC ++ ++#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) + GET_THREAD_INFO(%_ASM_DX) + cmp TI_addr_limit(%_ASM_DX),%_ASM_AX + jae bad_get_user +-1: movzb (%_ASM_AX),%edx ++ ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++ mov $PAX_USER_SHADOW_BASE,%_ASM_DX ++ cmp %_ASM_DX,%_ASM_AX ++ jae 1234f ++ add %_ASM_DX,%_ASM_AX ++1234: ++#endif ++ ++#endif ++ ++1: __copyuser_seg movzb (%_ASM_AX),%edx + xor %eax,%eax ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(__get_user_1) +@@ -49,12 +72,26 @@ ENDPROC(__get_user_1) + ENTRY(__get_user_2) + CFI_STARTPROC + add $1,%_ASM_AX ++ ++#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) + jc bad_get_user + GET_THREAD_INFO(%_ASM_DX) + cmp TI_addr_limit(%_ASM_DX),%_ASM_AX + jae bad_get_user +-2: movzwl -1(%_ASM_AX),%edx ++ ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++ mov $PAX_USER_SHADOW_BASE,%_ASM_DX ++ cmp %_ASM_DX,%_ASM_AX ++ jae 1234f ++ add %_ASM_DX,%_ASM_AX ++1234: ++#endif ++ ++#endif ++ ++2: __copyuser_seg movzwl -1(%_ASM_AX),%edx + xor %eax,%eax ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(__get_user_2) +@@ -62,12 +99,26 @@ ENDPROC(__get_user_2) + ENTRY(__get_user_4) + CFI_STARTPROC + add $3,%_ASM_AX ++ ++#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) + jc bad_get_user + GET_THREAD_INFO(%_ASM_DX) + cmp TI_addr_limit(%_ASM_DX),%_ASM_AX + jae bad_get_user +-3: mov -3(%_ASM_AX),%edx ++ ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++ mov $PAX_USER_SHADOW_BASE,%_ASM_DX ++ cmp %_ASM_DX,%_ASM_AX ++ jae 1234f ++ add %_ASM_DX,%_ASM_AX ++1234: ++#endif ++ ++#endif ++ ++3: __copyuser_seg mov -3(%_ASM_AX),%edx + xor %eax,%eax ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(__get_user_4) +@@ -80,8 +131,18 @@ ENTRY(__get_user_8) + GET_THREAD_INFO(%_ASM_DX) + cmp TI_addr_limit(%_ASM_DX),%_ASM_AX + jae bad_get_user ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ mov $PAX_USER_SHADOW_BASE,%_ASM_DX ++ cmp %_ASM_DX,%_ASM_AX ++ jae 1234f ++ add %_ASM_DX,%_ASM_AX ++1234: ++#endif ++ + 4: movq -7(%_ASM_AX),%_ASM_DX + xor %eax,%eax ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(__get_user_8) +@@ -91,6 +152,7 @@ bad_get_user: + CFI_STARTPROC + xor %edx,%edx + mov $(-EFAULT),%_ASM_AX ++ pax_force_retaddr + ret + CFI_ENDPROC + END(bad_get_user) +diff --git a/arch/x86/lib/insn.c b/arch/x86/lib/insn.c +index b1e6c4b..21ae8fc 100644 +--- a/arch/x86/lib/insn.c ++++ b/arch/x86/lib/insn.c +@@ -21,6 +21,11 @@ + #include <linux/string.h> + #include <asm/inat.h> + #include <asm/insn.h> ++#ifdef __KERNEL__ ++#include <asm/pgtable_types.h> ++#else ++#define ktla_ktva(addr) addr ++#endif + + /* Verify next sizeof(t) bytes can be on the same instruction */ + #define validate_next(t, insn, n) \ +@@ -49,8 +54,8 @@ + void insn_init(struct insn *insn, const void *kaddr, int x86_64) + { + memset(insn, 0, sizeof(*insn)); +- insn->kaddr = kaddr; +- insn->next_byte = kaddr; ++ insn->kaddr = ktla_ktva(kaddr); ++ insn->next_byte = ktla_ktva(kaddr); + insn->x86_64 = x86_64 ? 1 : 0; + insn->opnd_bytes = 4; + if (x86_64) +diff --git a/arch/x86/lib/iomap_copy_64.S b/arch/x86/lib/iomap_copy_64.S +index 05a95e7..326f2fa 100644 +--- a/arch/x86/lib/iomap_copy_64.S ++++ b/arch/x86/lib/iomap_copy_64.S +@@ -17,6 +17,7 @@ + + #include <linux/linkage.h> + #include <asm/dwarf2.h> ++#include <asm/alternative-asm.h> + + /* + * override generic version in lib/iomap_copy.c +@@ -25,6 +26,7 @@ ENTRY(__iowrite32_copy) + CFI_STARTPROC + movl %edx,%ecx + rep movsd ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(__iowrite32_copy) +diff --git a/arch/x86/lib/memcpy_64.S b/arch/x86/lib/memcpy_64.S +index 1c273be..da9cc0e 100644 +--- a/arch/x86/lib/memcpy_64.S ++++ b/arch/x86/lib/memcpy_64.S +@@ -33,6 +33,7 @@ + rep movsq + movl %edx, %ecx + rep movsb ++ pax_force_retaddr + ret + .Lmemcpy_e: + .previous +@@ -49,6 +50,7 @@ + movq %rdi, %rax + movq %rdx, %rcx + rep movsb ++ pax_force_retaddr + ret + .Lmemcpy_e_e: + .previous +@@ -76,13 +78,13 @@ ENTRY(memcpy) + */ + movq 0*8(%rsi), %r8 + movq 1*8(%rsi), %r9 +- movq 2*8(%rsi), %r10 ++ movq 2*8(%rsi), %rcx + movq 3*8(%rsi), %r11 + leaq 4*8(%rsi), %rsi + + movq %r8, 0*8(%rdi) + movq %r9, 1*8(%rdi) +- movq %r10, 2*8(%rdi) ++ movq %rcx, 2*8(%rdi) + movq %r11, 3*8(%rdi) + leaq 4*8(%rdi), %rdi + jae .Lcopy_forward_loop +@@ -105,12 +107,12 @@ ENTRY(memcpy) + subq $0x20, %rdx + movq -1*8(%rsi), %r8 + movq -2*8(%rsi), %r9 +- movq -3*8(%rsi), %r10 ++ movq -3*8(%rsi), %rcx + movq -4*8(%rsi), %r11 + leaq -4*8(%rsi), %rsi + movq %r8, -1*8(%rdi) + movq %r9, -2*8(%rdi) +- movq %r10, -3*8(%rdi) ++ movq %rcx, -3*8(%rdi) + movq %r11, -4*8(%rdi) + leaq -4*8(%rdi), %rdi + jae .Lcopy_backward_loop +@@ -130,12 +132,13 @@ ENTRY(memcpy) + */ + movq 0*8(%rsi), %r8 + movq 1*8(%rsi), %r9 +- movq -2*8(%rsi, %rdx), %r10 ++ movq -2*8(%rsi, %rdx), %rcx + movq -1*8(%rsi, %rdx), %r11 + movq %r8, 0*8(%rdi) + movq %r9, 1*8(%rdi) +- movq %r10, -2*8(%rdi, %rdx) ++ movq %rcx, -2*8(%rdi, %rdx) + movq %r11, -1*8(%rdi, %rdx) ++ pax_force_retaddr + retq + .p2align 4 + .Lless_16bytes: +@@ -148,6 +151,7 @@ ENTRY(memcpy) + movq -1*8(%rsi, %rdx), %r9 + movq %r8, 0*8(%rdi) + movq %r9, -1*8(%rdi, %rdx) ++ pax_force_retaddr + retq + .p2align 4 + .Lless_8bytes: +@@ -161,6 +165,7 @@ ENTRY(memcpy) + movl -4(%rsi, %rdx), %r8d + movl %ecx, (%rdi) + movl %r8d, -4(%rdi, %rdx) ++ pax_force_retaddr + retq + .p2align 4 + .Lless_3bytes: +@@ -179,6 +184,7 @@ ENTRY(memcpy) + movb %cl, (%rdi) + + .Lend: ++ pax_force_retaddr + retq + CFI_ENDPROC + ENDPROC(memcpy) +diff --git a/arch/x86/lib/memmove_64.S b/arch/x86/lib/memmove_64.S +index ee16461..c39c199 100644 +--- a/arch/x86/lib/memmove_64.S ++++ b/arch/x86/lib/memmove_64.S +@@ -61,13 +61,13 @@ ENTRY(memmove) + 5: + sub $0x20, %rdx + movq 0*8(%rsi), %r11 +- movq 1*8(%rsi), %r10 ++ movq 1*8(%rsi), %rcx + movq 2*8(%rsi), %r9 + movq 3*8(%rsi), %r8 + leaq 4*8(%rsi), %rsi + + movq %r11, 0*8(%rdi) +- movq %r10, 1*8(%rdi) ++ movq %rcx, 1*8(%rdi) + movq %r9, 2*8(%rdi) + movq %r8, 3*8(%rdi) + leaq 4*8(%rdi), %rdi +@@ -81,10 +81,10 @@ ENTRY(memmove) + 4: + movq %rdx, %rcx + movq -8(%rsi, %rdx), %r11 +- lea -8(%rdi, %rdx), %r10 ++ lea -8(%rdi, %rdx), %r9 + shrq $3, %rcx + rep movsq +- movq %r11, (%r10) ++ movq %r11, (%r9) + jmp 13f + .Lmemmove_end_forward: + +@@ -95,14 +95,14 @@ ENTRY(memmove) + 7: + movq %rdx, %rcx + movq (%rsi), %r11 +- movq %rdi, %r10 ++ movq %rdi, %r9 + leaq -8(%rsi, %rdx), %rsi + leaq -8(%rdi, %rdx), %rdi + shrq $3, %rcx + std + rep movsq + cld +- movq %r11, (%r10) ++ movq %r11, (%r9) + jmp 13f + + /* +@@ -127,13 +127,13 @@ ENTRY(memmove) + 8: + subq $0x20, %rdx + movq -1*8(%rsi), %r11 +- movq -2*8(%rsi), %r10 ++ movq -2*8(%rsi), %rcx + movq -3*8(%rsi), %r9 + movq -4*8(%rsi), %r8 + leaq -4*8(%rsi), %rsi + + movq %r11, -1*8(%rdi) +- movq %r10, -2*8(%rdi) ++ movq %rcx, -2*8(%rdi) + movq %r9, -3*8(%rdi) + movq %r8, -4*8(%rdi) + leaq -4*8(%rdi), %rdi +@@ -151,11 +151,11 @@ ENTRY(memmove) + * Move data from 16 bytes to 31 bytes. + */ + movq 0*8(%rsi), %r11 +- movq 1*8(%rsi), %r10 ++ movq 1*8(%rsi), %rcx + movq -2*8(%rsi, %rdx), %r9 + movq -1*8(%rsi, %rdx), %r8 + movq %r11, 0*8(%rdi) +- movq %r10, 1*8(%rdi) ++ movq %rcx, 1*8(%rdi) + movq %r9, -2*8(%rdi, %rdx) + movq %r8, -1*8(%rdi, %rdx) + jmp 13f +@@ -167,9 +167,9 @@ ENTRY(memmove) + * Move data from 8 bytes to 15 bytes. + */ + movq 0*8(%rsi), %r11 +- movq -1*8(%rsi, %rdx), %r10 ++ movq -1*8(%rsi, %rdx), %r9 + movq %r11, 0*8(%rdi) +- movq %r10, -1*8(%rdi, %rdx) ++ movq %r9, -1*8(%rdi, %rdx) + jmp 13f + 10: + cmpq $4, %rdx +@@ -178,9 +178,9 @@ ENTRY(memmove) + * Move data from 4 bytes to 7 bytes. + */ + movl (%rsi), %r11d +- movl -4(%rsi, %rdx), %r10d ++ movl -4(%rsi, %rdx), %r9d + movl %r11d, (%rdi) +- movl %r10d, -4(%rdi, %rdx) ++ movl %r9d, -4(%rdi, %rdx) + jmp 13f + 11: + cmp $2, %rdx +@@ -189,9 +189,9 @@ ENTRY(memmove) + * Move data from 2 bytes to 3 bytes. + */ + movw (%rsi), %r11w +- movw -2(%rsi, %rdx), %r10w ++ movw -2(%rsi, %rdx), %r9w + movw %r11w, (%rdi) +- movw %r10w, -2(%rdi, %rdx) ++ movw %r9w, -2(%rdi, %rdx) + jmp 13f + 12: + cmp $1, %rdx +@@ -202,6 +202,7 @@ ENTRY(memmove) + movb (%rsi), %r11b + movb %r11b, (%rdi) + 13: ++ pax_force_retaddr + retq + CFI_ENDPROC + +@@ -210,6 +211,7 @@ ENTRY(memmove) + /* Forward moving data. */ + movq %rdx, %rcx + rep movsb ++ pax_force_retaddr + retq + .Lmemmove_end_forward_efs: + .previous +diff --git a/arch/x86/lib/memset_64.S b/arch/x86/lib/memset_64.S +index 2dcb380..963660a 100644 +--- a/arch/x86/lib/memset_64.S ++++ b/arch/x86/lib/memset_64.S +@@ -30,6 +30,7 @@ + movl %edx,%ecx + rep stosb + movq %r9,%rax ++ pax_force_retaddr + ret + .Lmemset_e: + .previous +@@ -52,6 +53,7 @@ + movq %rdx,%rcx + rep stosb + movq %r9,%rax ++ pax_force_retaddr + ret + .Lmemset_e_e: + .previous +@@ -59,7 +61,7 @@ + ENTRY(memset) + ENTRY(__memset) + CFI_STARTPROC +- movq %rdi,%r10 ++ movq %rdi,%r11 + + /* expand byte value */ + movzbl %sil,%ecx +@@ -117,7 +119,8 @@ ENTRY(__memset) + jnz .Lloop_1 + + .Lende: +- movq %r10,%rax ++ movq %r11,%rax ++ pax_force_retaddr + ret + + CFI_RESTORE_STATE +diff --git a/arch/x86/lib/mmx_32.c b/arch/x86/lib/mmx_32.c +index c9f2d9b..e7fd2c0 100644 +--- a/arch/x86/lib/mmx_32.c ++++ b/arch/x86/lib/mmx_32.c +@@ -29,6 +29,7 @@ void *_mmx_memcpy(void *to, const void *from, size_t len) + { + void *p; + int i; ++ unsigned long cr0; + + if (unlikely(in_interrupt())) + return __memcpy(to, from, len); +@@ -39,44 +40,72 @@ void *_mmx_memcpy(void *to, const void *from, size_t len) + kernel_fpu_begin(); + + __asm__ __volatile__ ( +- "1: prefetch (%0)\n" /* This set is 28 bytes */ +- " prefetch 64(%0)\n" +- " prefetch 128(%0)\n" +- " prefetch 192(%0)\n" +- " prefetch 256(%0)\n" ++ "1: prefetch (%1)\n" /* This set is 28 bytes */ ++ " prefetch 64(%1)\n" ++ " prefetch 128(%1)\n" ++ " prefetch 192(%1)\n" ++ " prefetch 256(%1)\n" + "2: \n" + ".section .fixup, \"ax\"\n" +- "3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ ++ "3: \n" ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ " movl %%cr0, %0\n" ++ " movl %0, %%eax\n" ++ " andl $0xFFFEFFFF, %%eax\n" ++ " movl %%eax, %%cr0\n" ++#endif ++ ++ " movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ " movl %0, %%cr0\n" ++#endif ++ + " jmp 2b\n" + ".previous\n" + _ASM_EXTABLE(1b, 3b) +- : : "r" (from)); ++ : "=&r" (cr0) : "r" (from) : "ax"); + + for ( ; i > 5; i--) { + __asm__ __volatile__ ( +- "1: prefetch 320(%0)\n" +- "2: movq (%0), %%mm0\n" +- " movq 8(%0), %%mm1\n" +- " movq 16(%0), %%mm2\n" +- " movq 24(%0), %%mm3\n" +- " movq %%mm0, (%1)\n" +- " movq %%mm1, 8(%1)\n" +- " movq %%mm2, 16(%1)\n" +- " movq %%mm3, 24(%1)\n" +- " movq 32(%0), %%mm0\n" +- " movq 40(%0), %%mm1\n" +- " movq 48(%0), %%mm2\n" +- " movq 56(%0), %%mm3\n" +- " movq %%mm0, 32(%1)\n" +- " movq %%mm1, 40(%1)\n" +- " movq %%mm2, 48(%1)\n" +- " movq %%mm3, 56(%1)\n" ++ "1: prefetch 320(%1)\n" ++ "2: movq (%1), %%mm0\n" ++ " movq 8(%1), %%mm1\n" ++ " movq 16(%1), %%mm2\n" ++ " movq 24(%1), %%mm3\n" ++ " movq %%mm0, (%2)\n" ++ " movq %%mm1, 8(%2)\n" ++ " movq %%mm2, 16(%2)\n" ++ " movq %%mm3, 24(%2)\n" ++ " movq 32(%1), %%mm0\n" ++ " movq 40(%1), %%mm1\n" ++ " movq 48(%1), %%mm2\n" ++ " movq 56(%1), %%mm3\n" ++ " movq %%mm0, 32(%2)\n" ++ " movq %%mm1, 40(%2)\n" ++ " movq %%mm2, 48(%2)\n" ++ " movq %%mm3, 56(%2)\n" + ".section .fixup, \"ax\"\n" +- "3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */ ++ "3:\n" ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ " movl %%cr0, %0\n" ++ " movl %0, %%eax\n" ++ " andl $0xFFFEFFFF, %%eax\n" ++ " movl %%eax, %%cr0\n" ++#endif ++ ++ " movw $0x05EB, 1b\n" /* jmp on 5 bytes */ ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ " movl %0, %%cr0\n" ++#endif ++ + " jmp 2b\n" + ".previous\n" + _ASM_EXTABLE(1b, 3b) +- : : "r" (from), "r" (to) : "memory"); ++ : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax"); + + from += 64; + to += 64; +@@ -158,6 +187,7 @@ static void fast_clear_page(void *page) + static void fast_copy_page(void *to, void *from) + { + int i; ++ unsigned long cr0; + + kernel_fpu_begin(); + +@@ -166,42 +196,70 @@ static void fast_copy_page(void *to, void *from) + * but that is for later. -AV + */ + __asm__ __volatile__( +- "1: prefetch (%0)\n" +- " prefetch 64(%0)\n" +- " prefetch 128(%0)\n" +- " prefetch 192(%0)\n" +- " prefetch 256(%0)\n" ++ "1: prefetch (%1)\n" ++ " prefetch 64(%1)\n" ++ " prefetch 128(%1)\n" ++ " prefetch 192(%1)\n" ++ " prefetch 256(%1)\n" + "2: \n" + ".section .fixup, \"ax\"\n" +- "3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ ++ "3: \n" ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ " movl %%cr0, %0\n" ++ " movl %0, %%eax\n" ++ " andl $0xFFFEFFFF, %%eax\n" ++ " movl %%eax, %%cr0\n" ++#endif ++ ++ " movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ " movl %0, %%cr0\n" ++#endif ++ + " jmp 2b\n" + ".previous\n" +- _ASM_EXTABLE(1b, 3b) : : "r" (from)); ++ _ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from) : "ax"); + + for (i = 0; i < (4096-320)/64; i++) { + __asm__ __volatile__ ( +- "1: prefetch 320(%0)\n" +- "2: movq (%0), %%mm0\n" +- " movntq %%mm0, (%1)\n" +- " movq 8(%0), %%mm1\n" +- " movntq %%mm1, 8(%1)\n" +- " movq 16(%0), %%mm2\n" +- " movntq %%mm2, 16(%1)\n" +- " movq 24(%0), %%mm3\n" +- " movntq %%mm3, 24(%1)\n" +- " movq 32(%0), %%mm4\n" +- " movntq %%mm4, 32(%1)\n" +- " movq 40(%0), %%mm5\n" +- " movntq %%mm5, 40(%1)\n" +- " movq 48(%0), %%mm6\n" +- " movntq %%mm6, 48(%1)\n" +- " movq 56(%0), %%mm7\n" +- " movntq %%mm7, 56(%1)\n" ++ "1: prefetch 320(%1)\n" ++ "2: movq (%1), %%mm0\n" ++ " movntq %%mm0, (%2)\n" ++ " movq 8(%1), %%mm1\n" ++ " movntq %%mm1, 8(%2)\n" ++ " movq 16(%1), %%mm2\n" ++ " movntq %%mm2, 16(%2)\n" ++ " movq 24(%1), %%mm3\n" ++ " movntq %%mm3, 24(%2)\n" ++ " movq 32(%1), %%mm4\n" ++ " movntq %%mm4, 32(%2)\n" ++ " movq 40(%1), %%mm5\n" ++ " movntq %%mm5, 40(%2)\n" ++ " movq 48(%1), %%mm6\n" ++ " movntq %%mm6, 48(%2)\n" ++ " movq 56(%1), %%mm7\n" ++ " movntq %%mm7, 56(%2)\n" + ".section .fixup, \"ax\"\n" +- "3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */ ++ "3:\n" ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ " movl %%cr0, %0\n" ++ " movl %0, %%eax\n" ++ " andl $0xFFFEFFFF, %%eax\n" ++ " movl %%eax, %%cr0\n" ++#endif ++ ++ " movw $0x05EB, 1b\n" /* jmp on 5 bytes */ ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ " movl %0, %%cr0\n" ++#endif ++ + " jmp 2b\n" + ".previous\n" +- _ASM_EXTABLE(1b, 3b) : : "r" (from), "r" (to) : "memory"); ++ _ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax"); + + from += 64; + to += 64; +@@ -280,47 +338,76 @@ static void fast_clear_page(void *page) + static void fast_copy_page(void *to, void *from) + { + int i; ++ unsigned long cr0; + + kernel_fpu_begin(); + + __asm__ __volatile__ ( +- "1: prefetch (%0)\n" +- " prefetch 64(%0)\n" +- " prefetch 128(%0)\n" +- " prefetch 192(%0)\n" +- " prefetch 256(%0)\n" ++ "1: prefetch (%1)\n" ++ " prefetch 64(%1)\n" ++ " prefetch 128(%1)\n" ++ " prefetch 192(%1)\n" ++ " prefetch 256(%1)\n" + "2: \n" + ".section .fixup, \"ax\"\n" +- "3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ ++ "3: \n" ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ " movl %%cr0, %0\n" ++ " movl %0, %%eax\n" ++ " andl $0xFFFEFFFF, %%eax\n" ++ " movl %%eax, %%cr0\n" ++#endif ++ ++ " movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ " movl %0, %%cr0\n" ++#endif ++ + " jmp 2b\n" + ".previous\n" +- _ASM_EXTABLE(1b, 3b) : : "r" (from)); ++ _ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from) : "ax"); + + for (i = 0; i < 4096/64; i++) { + __asm__ __volatile__ ( +- "1: prefetch 320(%0)\n" +- "2: movq (%0), %%mm0\n" +- " movq 8(%0), %%mm1\n" +- " movq 16(%0), %%mm2\n" +- " movq 24(%0), %%mm3\n" +- " movq %%mm0, (%1)\n" +- " movq %%mm1, 8(%1)\n" +- " movq %%mm2, 16(%1)\n" +- " movq %%mm3, 24(%1)\n" +- " movq 32(%0), %%mm0\n" +- " movq 40(%0), %%mm1\n" +- " movq 48(%0), %%mm2\n" +- " movq 56(%0), %%mm3\n" +- " movq %%mm0, 32(%1)\n" +- " movq %%mm1, 40(%1)\n" +- " movq %%mm2, 48(%1)\n" +- " movq %%mm3, 56(%1)\n" ++ "1: prefetch 320(%1)\n" ++ "2: movq (%1), %%mm0\n" ++ " movq 8(%1), %%mm1\n" ++ " movq 16(%1), %%mm2\n" ++ " movq 24(%1), %%mm3\n" ++ " movq %%mm0, (%2)\n" ++ " movq %%mm1, 8(%2)\n" ++ " movq %%mm2, 16(%2)\n" ++ " movq %%mm3, 24(%2)\n" ++ " movq 32(%1), %%mm0\n" ++ " movq 40(%1), %%mm1\n" ++ " movq 48(%1), %%mm2\n" ++ " movq 56(%1), %%mm3\n" ++ " movq %%mm0, 32(%2)\n" ++ " movq %%mm1, 40(%2)\n" ++ " movq %%mm2, 48(%2)\n" ++ " movq %%mm3, 56(%2)\n" + ".section .fixup, \"ax\"\n" +- "3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */ ++ "3:\n" ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ " movl %%cr0, %0\n" ++ " movl %0, %%eax\n" ++ " andl $0xFFFEFFFF, %%eax\n" ++ " movl %%eax, %%cr0\n" ++#endif ++ ++ " movw $0x05EB, 1b\n" /* jmp on 5 bytes */ ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ " movl %0, %%cr0\n" ++#endif ++ + " jmp 2b\n" + ".previous\n" + _ASM_EXTABLE(1b, 3b) +- : : "r" (from), "r" (to) : "memory"); ++ : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax"); + + from += 64; + to += 64; +diff --git a/arch/x86/lib/msr-reg.S b/arch/x86/lib/msr-reg.S +index 69fa106..adda88b 100644 +--- a/arch/x86/lib/msr-reg.S ++++ b/arch/x86/lib/msr-reg.S +@@ -3,6 +3,7 @@ + #include <asm/dwarf2.h> + #include <asm/asm.h> + #include <asm/msr.h> ++#include <asm/alternative-asm.h> + + #ifdef CONFIG_X86_64 + /* +@@ -16,7 +17,7 @@ ENTRY(native_\op\()_safe_regs) + CFI_STARTPROC + pushq_cfi %rbx + pushq_cfi %rbp +- movq %rdi, %r10 /* Save pointer */ ++ movq %rdi, %r9 /* Save pointer */ + xorl %r11d, %r11d /* Return value */ + movl (%rdi), %eax + movl 4(%rdi), %ecx +@@ -27,16 +28,17 @@ ENTRY(native_\op\()_safe_regs) + movl 28(%rdi), %edi + CFI_REMEMBER_STATE + 1: \op +-2: movl %eax, (%r10) ++2: movl %eax, (%r9) + movl %r11d, %eax /* Return value */ +- movl %ecx, 4(%r10) +- movl %edx, 8(%r10) +- movl %ebx, 12(%r10) +- movl %ebp, 20(%r10) +- movl %esi, 24(%r10) +- movl %edi, 28(%r10) ++ movl %ecx, 4(%r9) ++ movl %edx, 8(%r9) ++ movl %ebx, 12(%r9) ++ movl %ebp, 20(%r9) ++ movl %esi, 24(%r9) ++ movl %edi, 28(%r9) + popq_cfi %rbp + popq_cfi %rbx ++ pax_force_retaddr + ret + 3: + CFI_RESTORE_STATE +diff --git a/arch/x86/lib/putuser.S b/arch/x86/lib/putuser.S +index 36b0d15..d381858 100644 +--- a/arch/x86/lib/putuser.S ++++ b/arch/x86/lib/putuser.S +@@ -15,7 +15,9 @@ + #include <asm/thread_info.h> + #include <asm/errno.h> + #include <asm/asm.h> +- ++#include <asm/segment.h> ++#include <asm/pgtable.h> ++#include <asm/alternative-asm.h> + + /* + * __put_user_X +@@ -29,52 +31,119 @@ + * as they get called from within inline assembly. + */ + +-#define ENTER CFI_STARTPROC ; \ +- GET_THREAD_INFO(%_ASM_BX) +-#define EXIT ret ; \ ++#define ENTER CFI_STARTPROC ++#define EXIT pax_force_retaddr; ret ; \ + CFI_ENDPROC + ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++#define _DEST %_ASM_CX,%_ASM_BX ++#else ++#define _DEST %_ASM_CX ++#endif ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) ++#define __copyuser_seg gs; ++#else ++#define __copyuser_seg ++#endif ++ + .text + ENTRY(__put_user_1) + ENTER ++ ++#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) ++ GET_THREAD_INFO(%_ASM_BX) + cmp TI_addr_limit(%_ASM_BX),%_ASM_CX + jae bad_put_user +-1: movb %al,(%_ASM_CX) ++ ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++ mov $PAX_USER_SHADOW_BASE,%_ASM_BX ++ cmp %_ASM_BX,%_ASM_CX ++ jb 1234f ++ xor %ebx,%ebx ++1234: ++#endif ++ ++#endif ++ ++1: __copyuser_seg movb %al,(_DEST) + xor %eax,%eax + EXIT + ENDPROC(__put_user_1) + + ENTRY(__put_user_2) + ENTER ++ ++#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) ++ GET_THREAD_INFO(%_ASM_BX) + mov TI_addr_limit(%_ASM_BX),%_ASM_BX + sub $1,%_ASM_BX + cmp %_ASM_BX,%_ASM_CX + jae bad_put_user +-2: movw %ax,(%_ASM_CX) ++ ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++ mov $PAX_USER_SHADOW_BASE,%_ASM_BX ++ cmp %_ASM_BX,%_ASM_CX ++ jb 1234f ++ xor %ebx,%ebx ++1234: ++#endif ++ ++#endif ++ ++2: __copyuser_seg movw %ax,(_DEST) + xor %eax,%eax + EXIT + ENDPROC(__put_user_2) + + ENTRY(__put_user_4) + ENTER ++ ++#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) ++ GET_THREAD_INFO(%_ASM_BX) + mov TI_addr_limit(%_ASM_BX),%_ASM_BX + sub $3,%_ASM_BX + cmp %_ASM_BX,%_ASM_CX + jae bad_put_user +-3: movl %eax,(%_ASM_CX) ++ ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++ mov $PAX_USER_SHADOW_BASE,%_ASM_BX ++ cmp %_ASM_BX,%_ASM_CX ++ jb 1234f ++ xor %ebx,%ebx ++1234: ++#endif ++ ++#endif ++ ++3: __copyuser_seg movl %eax,(_DEST) + xor %eax,%eax + EXIT + ENDPROC(__put_user_4) + + ENTRY(__put_user_8) + ENTER ++ ++#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) ++ GET_THREAD_INFO(%_ASM_BX) + mov TI_addr_limit(%_ASM_BX),%_ASM_BX + sub $7,%_ASM_BX + cmp %_ASM_BX,%_ASM_CX + jae bad_put_user +-4: mov %_ASM_AX,(%_ASM_CX) ++ ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++ mov $PAX_USER_SHADOW_BASE,%_ASM_BX ++ cmp %_ASM_BX,%_ASM_CX ++ jb 1234f ++ xor %ebx,%ebx ++1234: ++#endif ++ ++#endif ++ ++4: __copyuser_seg mov %_ASM_AX,(_DEST) + #ifdef CONFIG_X86_32 +-5: movl %edx,4(%_ASM_CX) ++5: __copyuser_seg movl %edx,4(_DEST) + #endif + xor %eax,%eax + EXIT +diff --git a/arch/x86/lib/rwlock.S b/arch/x86/lib/rwlock.S +index 1cad221..de671ee 100644 +--- a/arch/x86/lib/rwlock.S ++++ b/arch/x86/lib/rwlock.S +@@ -16,13 +16,34 @@ ENTRY(__write_lock_failed) + FRAME + 0: LOCK_PREFIX + WRITE_LOCK_ADD($RW_LOCK_BIAS) (%__lock_ptr) ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ jno 1234f ++ LOCK_PREFIX ++ WRITE_LOCK_SUB($RW_LOCK_BIAS) (%__lock_ptr) ++ int $4 ++1234: ++ _ASM_EXTABLE(1234b, 1234b) ++#endif ++ + 1: rep; nop + cmpl $WRITE_LOCK_CMP, (%__lock_ptr) + jne 1b + LOCK_PREFIX + WRITE_LOCK_SUB($RW_LOCK_BIAS) (%__lock_ptr) ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ jno 1234f ++ LOCK_PREFIX ++ WRITE_LOCK_ADD($RW_LOCK_BIAS) (%__lock_ptr) ++ int $4 ++1234: ++ _ASM_EXTABLE(1234b, 1234b) ++#endif ++ + jnz 0b + ENDFRAME ++ pax_force_retaddr + ret + CFI_ENDPROC + END(__write_lock_failed) +@@ -32,13 +53,34 @@ ENTRY(__read_lock_failed) + FRAME + 0: LOCK_PREFIX + READ_LOCK_SIZE(inc) (%__lock_ptr) ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ jno 1234f ++ LOCK_PREFIX ++ READ_LOCK_SIZE(dec) (%__lock_ptr) ++ int $4 ++1234: ++ _ASM_EXTABLE(1234b, 1234b) ++#endif ++ + 1: rep; nop + READ_LOCK_SIZE(cmp) $1, (%__lock_ptr) + js 1b + LOCK_PREFIX + READ_LOCK_SIZE(dec) (%__lock_ptr) ++ ++#ifdef CONFIG_PAX_REFCOUNT ++ jno 1234f ++ LOCK_PREFIX ++ READ_LOCK_SIZE(inc) (%__lock_ptr) ++ int $4 ++1234: ++ _ASM_EXTABLE(1234b, 1234b) ++#endif ++ + js 0b + ENDFRAME ++ pax_force_retaddr + ret + CFI_ENDPROC + END(__read_lock_failed) +diff --git a/arch/x86/lib/rwsem.S b/arch/x86/lib/rwsem.S +index 5dff5f0..cadebf4 100644 +--- a/arch/x86/lib/rwsem.S ++++ b/arch/x86/lib/rwsem.S +@@ -94,6 +94,7 @@ ENTRY(call_rwsem_down_read_failed) + __ASM_SIZE(pop,_cfi) %__ASM_REG(dx) + CFI_RESTORE __ASM_REG(dx) + restore_common_regs ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(call_rwsem_down_read_failed) +@@ -104,6 +105,7 @@ ENTRY(call_rwsem_down_write_failed) + movq %rax,%rdi + call rwsem_down_write_failed + restore_common_regs ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(call_rwsem_down_write_failed) +@@ -117,7 +119,8 @@ ENTRY(call_rwsem_wake) + movq %rax,%rdi + call rwsem_wake + restore_common_regs +-1: ret ++1: pax_force_retaddr ++ ret + CFI_ENDPROC + ENDPROC(call_rwsem_wake) + +@@ -131,6 +134,7 @@ ENTRY(call_rwsem_downgrade_wake) + __ASM_SIZE(pop,_cfi) %__ASM_REG(dx) + CFI_RESTORE __ASM_REG(dx) + restore_common_regs ++ pax_force_retaddr + ret + CFI_ENDPROC + ENDPROC(call_rwsem_downgrade_wake) +diff --git a/arch/x86/lib/thunk_64.S b/arch/x86/lib/thunk_64.S +index a63efd6..ccecad8 100644 +--- a/arch/x86/lib/thunk_64.S ++++ b/arch/x86/lib/thunk_64.S +@@ -8,6 +8,7 @@ + #include <linux/linkage.h> + #include <asm/dwarf2.h> + #include <asm/calling.h> ++#include <asm/alternative-asm.h> + + /* rdi: arg1 ... normal C conventions. rax is saved/restored. */ + .macro THUNK name, func, put_ret_addr_in_rdi=0 +@@ -41,5 +42,6 @@ + SAVE_ARGS + restore: + RESTORE_ARGS ++ pax_force_retaddr + ret + CFI_ENDPROC +diff --git a/arch/x86/lib/usercopy_32.c b/arch/x86/lib/usercopy_32.c +index ef2a6a5..3b28862 100644 +--- a/arch/x86/lib/usercopy_32.c ++++ b/arch/x86/lib/usercopy_32.c +@@ -41,10 +41,12 @@ do { \ + int __d0; \ + might_fault(); \ + __asm__ __volatile__( \ ++ __COPYUSER_SET_ES \ + "0: rep; stosl\n" \ + " movl %2,%0\n" \ + "1: rep; stosb\n" \ + "2:\n" \ ++ __COPYUSER_RESTORE_ES \ + ".section .fixup,\"ax\"\n" \ + "3: lea 0(%2,%0,4),%0\n" \ + " jmp 2b\n" \ +@@ -113,6 +115,7 @@ long strnlen_user(const char __user *s, long n) + might_fault(); + + __asm__ __volatile__( ++ __COPYUSER_SET_ES + " testl %0, %0\n" + " jz 3f\n" + " andl %0,%%ecx\n" +@@ -121,6 +124,7 @@ long strnlen_user(const char __user *s, long n) + " subl %%ecx,%0\n" + " addl %0,%%eax\n" + "1:\n" ++ __COPYUSER_RESTORE_ES + ".section .fixup,\"ax\"\n" + "2: xorl %%eax,%%eax\n" + " jmp 1b\n" +@@ -140,7 +144,7 @@ EXPORT_SYMBOL(strnlen_user); + + #ifdef CONFIG_X86_INTEL_USERCOPY + static unsigned long +-__copy_user_intel(void __user *to, const void *from, unsigned long size) ++__generic_copy_to_user_intel(void __user *to, const void *from, unsigned long size) + { + int d0, d1; + __asm__ __volatile__( +@@ -152,36 +156,36 @@ __copy_user_intel(void __user *to, const void *from, unsigned long size) + " .align 2,0x90\n" + "3: movl 0(%4), %%eax\n" + "4: movl 4(%4), %%edx\n" +- "5: movl %%eax, 0(%3)\n" +- "6: movl %%edx, 4(%3)\n" ++ "5: "__copyuser_seg" movl %%eax, 0(%3)\n" ++ "6: "__copyuser_seg" movl %%edx, 4(%3)\n" + "7: movl 8(%4), %%eax\n" + "8: movl 12(%4),%%edx\n" +- "9: movl %%eax, 8(%3)\n" +- "10: movl %%edx, 12(%3)\n" ++ "9: "__copyuser_seg" movl %%eax, 8(%3)\n" ++ "10: "__copyuser_seg" movl %%edx, 12(%3)\n" + "11: movl 16(%4), %%eax\n" + "12: movl 20(%4), %%edx\n" +- "13: movl %%eax, 16(%3)\n" +- "14: movl %%edx, 20(%3)\n" ++ "13: "__copyuser_seg" movl %%eax, 16(%3)\n" ++ "14: "__copyuser_seg" movl %%edx, 20(%3)\n" + "15: movl 24(%4), %%eax\n" + "16: movl 28(%4), %%edx\n" +- "17: movl %%eax, 24(%3)\n" +- "18: movl %%edx, 28(%3)\n" ++ "17: "__copyuser_seg" movl %%eax, 24(%3)\n" ++ "18: "__copyuser_seg" movl %%edx, 28(%3)\n" + "19: movl 32(%4), %%eax\n" + "20: movl 36(%4), %%edx\n" +- "21: movl %%eax, 32(%3)\n" +- "22: movl %%edx, 36(%3)\n" ++ "21: "__copyuser_seg" movl %%eax, 32(%3)\n" ++ "22: "__copyuser_seg" movl %%edx, 36(%3)\n" + "23: movl 40(%4), %%eax\n" + "24: movl 44(%4), %%edx\n" +- "25: movl %%eax, 40(%3)\n" +- "26: movl %%edx, 44(%3)\n" ++ "25: "__copyuser_seg" movl %%eax, 40(%3)\n" ++ "26: "__copyuser_seg" movl %%edx, 44(%3)\n" + "27: movl 48(%4), %%eax\n" + "28: movl 52(%4), %%edx\n" +- "29: movl %%eax, 48(%3)\n" +- "30: movl %%edx, 52(%3)\n" ++ "29: "__copyuser_seg" movl %%eax, 48(%3)\n" ++ "30: "__copyuser_seg" movl %%edx, 52(%3)\n" + "31: movl 56(%4), %%eax\n" + "32: movl 60(%4), %%edx\n" +- "33: movl %%eax, 56(%3)\n" +- "34: movl %%edx, 60(%3)\n" ++ "33: "__copyuser_seg" movl %%eax, 56(%3)\n" ++ "34: "__copyuser_seg" movl %%edx, 60(%3)\n" + " addl $-64, %0\n" + " addl $64, %4\n" + " addl $64, %3\n" +@@ -191,10 +195,12 @@ __copy_user_intel(void __user *to, const void *from, unsigned long size) + " shrl $2, %0\n" + " andl $3, %%eax\n" + " cld\n" ++ __COPYUSER_SET_ES + "99: rep; movsl\n" + "36: movl %%eax, %0\n" + "37: rep; movsb\n" + "100:\n" ++ __COPYUSER_RESTORE_ES + ".section .fixup,\"ax\"\n" + "101: lea 0(%%eax,%0,4),%0\n" + " jmp 100b\n" +@@ -247,46 +253,155 @@ __copy_user_intel(void __user *to, const void *from, unsigned long size) + } + + static unsigned long ++__generic_copy_from_user_intel(void *to, const void __user *from, unsigned long size) ++{ ++ int d0, d1; ++ __asm__ __volatile__( ++ " .align 2,0x90\n" ++ "1: "__copyuser_seg" movl 32(%4), %%eax\n" ++ " cmpl $67, %0\n" ++ " jbe 3f\n" ++ "2: "__copyuser_seg" movl 64(%4), %%eax\n" ++ " .align 2,0x90\n" ++ "3: "__copyuser_seg" movl 0(%4), %%eax\n" ++ "4: "__copyuser_seg" movl 4(%4), %%edx\n" ++ "5: movl %%eax, 0(%3)\n" ++ "6: movl %%edx, 4(%3)\n" ++ "7: "__copyuser_seg" movl 8(%4), %%eax\n" ++ "8: "__copyuser_seg" movl 12(%4),%%edx\n" ++ "9: movl %%eax, 8(%3)\n" ++ "10: movl %%edx, 12(%3)\n" ++ "11: "__copyuser_seg" movl 16(%4), %%eax\n" ++ "12: "__copyuser_seg" movl 20(%4), %%edx\n" ++ "13: movl %%eax, 16(%3)\n" ++ "14: movl %%edx, 20(%3)\n" ++ "15: "__copyuser_seg" movl 24(%4), %%eax\n" ++ "16: "__copyuser_seg" movl 28(%4), %%edx\n" ++ "17: movl %%eax, 24(%3)\n" ++ "18: movl %%edx, 28(%3)\n" ++ "19: "__copyuser_seg" movl 32(%4), %%eax\n" ++ "20: "__copyuser_seg" movl 36(%4), %%edx\n" ++ "21: movl %%eax, 32(%3)\n" ++ "22: movl %%edx, 36(%3)\n" ++ "23: "__copyuser_seg" movl 40(%4), %%eax\n" ++ "24: "__copyuser_seg" movl 44(%4), %%edx\n" ++ "25: movl %%eax, 40(%3)\n" ++ "26: movl %%edx, 44(%3)\n" ++ "27: "__copyuser_seg" movl 48(%4), %%eax\n" ++ "28: "__copyuser_seg" movl 52(%4), %%edx\n" ++ "29: movl %%eax, 48(%3)\n" ++ "30: movl %%edx, 52(%3)\n" ++ "31: "__copyuser_seg" movl 56(%4), %%eax\n" ++ "32: "__copyuser_seg" movl 60(%4), %%edx\n" ++ "33: movl %%eax, 56(%3)\n" ++ "34: movl %%edx, 60(%3)\n" ++ " addl $-64, %0\n" ++ " addl $64, %4\n" ++ " addl $64, %3\n" ++ " cmpl $63, %0\n" ++ " ja 1b\n" ++ "35: movl %0, %%eax\n" ++ " shrl $2, %0\n" ++ " andl $3, %%eax\n" ++ " cld\n" ++ "99: rep; "__copyuser_seg" movsl\n" ++ "36: movl %%eax, %0\n" ++ "37: rep; "__copyuser_seg" movsb\n" ++ "100:\n" ++ ".section .fixup,\"ax\"\n" ++ "101: lea 0(%%eax,%0,4),%0\n" ++ " jmp 100b\n" ++ ".previous\n" ++ ".section __ex_table,\"a\"\n" ++ " .align 4\n" ++ " .long 1b,100b\n" ++ " .long 2b,100b\n" ++ " .long 3b,100b\n" ++ " .long 4b,100b\n" ++ " .long 5b,100b\n" ++ " .long 6b,100b\n" ++ " .long 7b,100b\n" ++ " .long 8b,100b\n" ++ " .long 9b,100b\n" ++ " .long 10b,100b\n" ++ " .long 11b,100b\n" ++ " .long 12b,100b\n" ++ " .long 13b,100b\n" ++ " .long 14b,100b\n" ++ " .long 15b,100b\n" ++ " .long 16b,100b\n" ++ " .long 17b,100b\n" ++ " .long 18b,100b\n" ++ " .long 19b,100b\n" ++ " .long 20b,100b\n" ++ " .long 21b,100b\n" ++ " .long 22b,100b\n" ++ " .long 23b,100b\n" ++ " .long 24b,100b\n" ++ " .long 25b,100b\n" ++ " .long 26b,100b\n" ++ " .long 27b,100b\n" ++ " .long 28b,100b\n" ++ " .long 29b,100b\n" ++ " .long 30b,100b\n" ++ " .long 31b,100b\n" ++ " .long 32b,100b\n" ++ " .long 33b,100b\n" ++ " .long 34b,100b\n" ++ " .long 35b,100b\n" ++ " .long 36b,100b\n" ++ " .long 37b,100b\n" ++ " .long 99b,101b\n" ++ ".previous" ++ : "=&c"(size), "=&D" (d0), "=&S" (d1) ++ : "1"(to), "2"(from), "0"(size) ++ : "eax", "edx", "memory"); ++ return size; ++} ++ ++static unsigned long ++__copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size) __size_overflow(3); ++static unsigned long + __copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size) + { + int d0, d1; + __asm__ __volatile__( + " .align 2,0x90\n" +- "0: movl 32(%4), %%eax\n" ++ "0: "__copyuser_seg" movl 32(%4), %%eax\n" + " cmpl $67, %0\n" + " jbe 2f\n" +- "1: movl 64(%4), %%eax\n" ++ "1: "__copyuser_seg" movl 64(%4), %%eax\n" + " .align 2,0x90\n" +- "2: movl 0(%4), %%eax\n" +- "21: movl 4(%4), %%edx\n" ++ "2: "__copyuser_seg" movl 0(%4), %%eax\n" ++ "21: "__copyuser_seg" movl 4(%4), %%edx\n" + " movl %%eax, 0(%3)\n" + " movl %%edx, 4(%3)\n" +- "3: movl 8(%4), %%eax\n" +- "31: movl 12(%4),%%edx\n" ++ "3: "__copyuser_seg" movl 8(%4), %%eax\n" ++ "31: "__copyuser_seg" movl 12(%4),%%edx\n" + " movl %%eax, 8(%3)\n" + " movl %%edx, 12(%3)\n" +- "4: movl 16(%4), %%eax\n" +- "41: movl 20(%4), %%edx\n" ++ "4: "__copyuser_seg" movl 16(%4), %%eax\n" ++ "41: "__copyuser_seg" movl 20(%4), %%edx\n" + " movl %%eax, 16(%3)\n" + " movl %%edx, 20(%3)\n" +- "10: movl 24(%4), %%eax\n" +- "51: movl 28(%4), %%edx\n" ++ "10: "__copyuser_seg" movl 24(%4), %%eax\n" ++ "51: "__copyuser_seg" movl 28(%4), %%edx\n" + " movl %%eax, 24(%3)\n" + " movl %%edx, 28(%3)\n" +- "11: movl 32(%4), %%eax\n" +- "61: movl 36(%4), %%edx\n" ++ "11: "__copyuser_seg" movl 32(%4), %%eax\n" ++ "61: "__copyuser_seg" movl 36(%4), %%edx\n" + " movl %%eax, 32(%3)\n" + " movl %%edx, 36(%3)\n" +- "12: movl 40(%4), %%eax\n" +- "71: movl 44(%4), %%edx\n" ++ "12: "__copyuser_seg" movl 40(%4), %%eax\n" ++ "71: "__copyuser_seg" movl 44(%4), %%edx\n" + " movl %%eax, 40(%3)\n" + " movl %%edx, 44(%3)\n" +- "13: movl 48(%4), %%eax\n" +- "81: movl 52(%4), %%edx\n" ++ "13: "__copyuser_seg" movl 48(%4), %%eax\n" ++ "81: "__copyuser_seg" movl 52(%4), %%edx\n" + " movl %%eax, 48(%3)\n" + " movl %%edx, 52(%3)\n" +- "14: movl 56(%4), %%eax\n" +- "91: movl 60(%4), %%edx\n" ++ "14: "__copyuser_seg" movl 56(%4), %%eax\n" ++ "91: "__copyuser_seg" movl 60(%4), %%edx\n" + " movl %%eax, 56(%3)\n" + " movl %%edx, 60(%3)\n" + " addl $-64, %0\n" +@@ -298,9 +413,9 @@ __copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size) + " shrl $2, %0\n" + " andl $3, %%eax\n" + " cld\n" +- "6: rep; movsl\n" ++ "6: rep; "__copyuser_seg" movsl\n" + " movl %%eax,%0\n" +- "7: rep; movsb\n" ++ "7: rep; "__copyuser_seg" movsb\n" + "8:\n" + ".section .fixup,\"ax\"\n" + "9: lea 0(%%eax,%0,4),%0\n" +@@ -347,47 +462,49 @@ __copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size) + */ + + static unsigned long __copy_user_zeroing_intel_nocache(void *to, ++ const void __user *from, unsigned long size) __size_overflow(3); ++static unsigned long __copy_user_zeroing_intel_nocache(void *to, + const void __user *from, unsigned long size) + { + int d0, d1; + + __asm__ __volatile__( + " .align 2,0x90\n" +- "0: movl 32(%4), %%eax\n" ++ "0: "__copyuser_seg" movl 32(%4), %%eax\n" + " cmpl $67, %0\n" + " jbe 2f\n" +- "1: movl 64(%4), %%eax\n" ++ "1: "__copyuser_seg" movl 64(%4), %%eax\n" + " .align 2,0x90\n" +- "2: movl 0(%4), %%eax\n" +- "21: movl 4(%4), %%edx\n" ++ "2: "__copyuser_seg" movl 0(%4), %%eax\n" ++ "21: "__copyuser_seg" movl 4(%4), %%edx\n" + " movnti %%eax, 0(%3)\n" + " movnti %%edx, 4(%3)\n" +- "3: movl 8(%4), %%eax\n" +- "31: movl 12(%4),%%edx\n" ++ "3: "__copyuser_seg" movl 8(%4), %%eax\n" ++ "31: "__copyuser_seg" movl 12(%4),%%edx\n" + " movnti %%eax, 8(%3)\n" + " movnti %%edx, 12(%3)\n" +- "4: movl 16(%4), %%eax\n" +- "41: movl 20(%4), %%edx\n" ++ "4: "__copyuser_seg" movl 16(%4), %%eax\n" ++ "41: "__copyuser_seg" movl 20(%4), %%edx\n" + " movnti %%eax, 16(%3)\n" + " movnti %%edx, 20(%3)\n" +- "10: movl 24(%4), %%eax\n" +- "51: movl 28(%4), %%edx\n" ++ "10: "__copyuser_seg" movl 24(%4), %%eax\n" ++ "51: "__copyuser_seg" movl 28(%4), %%edx\n" + " movnti %%eax, 24(%3)\n" + " movnti %%edx, 28(%3)\n" +- "11: movl 32(%4), %%eax\n" +- "61: movl 36(%4), %%edx\n" ++ "11: "__copyuser_seg" movl 32(%4), %%eax\n" ++ "61: "__copyuser_seg" movl 36(%4), %%edx\n" + " movnti %%eax, 32(%3)\n" + " movnti %%edx, 36(%3)\n" +- "12: movl 40(%4), %%eax\n" +- "71: movl 44(%4), %%edx\n" ++ "12: "__copyuser_seg" movl 40(%4), %%eax\n" ++ "71: "__copyuser_seg" movl 44(%4), %%edx\n" + " movnti %%eax, 40(%3)\n" + " movnti %%edx, 44(%3)\n" +- "13: movl 48(%4), %%eax\n" +- "81: movl 52(%4), %%edx\n" ++ "13: "__copyuser_seg" movl 48(%4), %%eax\n" ++ "81: "__copyuser_seg" movl 52(%4), %%edx\n" + " movnti %%eax, 48(%3)\n" + " movnti %%edx, 52(%3)\n" +- "14: movl 56(%4), %%eax\n" +- "91: movl 60(%4), %%edx\n" ++ "14: "__copyuser_seg" movl 56(%4), %%eax\n" ++ "91: "__copyuser_seg" movl 60(%4), %%edx\n" + " movnti %%eax, 56(%3)\n" + " movnti %%edx, 60(%3)\n" + " addl $-64, %0\n" +@@ -400,9 +517,9 @@ static unsigned long __copy_user_zeroing_intel_nocache(void *to, + " shrl $2, %0\n" + " andl $3, %%eax\n" + " cld\n" +- "6: rep; movsl\n" ++ "6: rep; "__copyuser_seg" movsl\n" + " movl %%eax,%0\n" +- "7: rep; movsb\n" ++ "7: rep; "__copyuser_seg" movsb\n" + "8:\n" + ".section .fixup,\"ax\"\n" + "9: lea 0(%%eax,%0,4),%0\n" +@@ -444,47 +561,49 @@ static unsigned long __copy_user_zeroing_intel_nocache(void *to, + } + + static unsigned long __copy_user_intel_nocache(void *to, ++ const void __user *from, unsigned long size) __size_overflow(3); ++static unsigned long __copy_user_intel_nocache(void *to, + const void __user *from, unsigned long size) + { + int d0, d1; + + __asm__ __volatile__( + " .align 2,0x90\n" +- "0: movl 32(%4), %%eax\n" ++ "0: "__copyuser_seg" movl 32(%4), %%eax\n" + " cmpl $67, %0\n" + " jbe 2f\n" +- "1: movl 64(%4), %%eax\n" ++ "1: "__copyuser_seg" movl 64(%4), %%eax\n" + " .align 2,0x90\n" +- "2: movl 0(%4), %%eax\n" +- "21: movl 4(%4), %%edx\n" ++ "2: "__copyuser_seg" movl 0(%4), %%eax\n" ++ "21: "__copyuser_seg" movl 4(%4), %%edx\n" + " movnti %%eax, 0(%3)\n" + " movnti %%edx, 4(%3)\n" +- "3: movl 8(%4), %%eax\n" +- "31: movl 12(%4),%%edx\n" ++ "3: "__copyuser_seg" movl 8(%4), %%eax\n" ++ "31: "__copyuser_seg" movl 12(%4),%%edx\n" + " movnti %%eax, 8(%3)\n" + " movnti %%edx, 12(%3)\n" +- "4: movl 16(%4), %%eax\n" +- "41: movl 20(%4), %%edx\n" ++ "4: "__copyuser_seg" movl 16(%4), %%eax\n" ++ "41: "__copyuser_seg" movl 20(%4), %%edx\n" + " movnti %%eax, 16(%3)\n" + " movnti %%edx, 20(%3)\n" +- "10: movl 24(%4), %%eax\n" +- "51: movl 28(%4), %%edx\n" ++ "10: "__copyuser_seg" movl 24(%4), %%eax\n" ++ "51: "__copyuser_seg" movl 28(%4), %%edx\n" + " movnti %%eax, 24(%3)\n" + " movnti %%edx, 28(%3)\n" +- "11: movl 32(%4), %%eax\n" +- "61: movl 36(%4), %%edx\n" ++ "11: "__copyuser_seg" movl 32(%4), %%eax\n" ++ "61: "__copyuser_seg" movl 36(%4), %%edx\n" + " movnti %%eax, 32(%3)\n" + " movnti %%edx, 36(%3)\n" +- "12: movl 40(%4), %%eax\n" +- "71: movl 44(%4), %%edx\n" ++ "12: "__copyuser_seg" movl 40(%4), %%eax\n" ++ "71: "__copyuser_seg" movl 44(%4), %%edx\n" + " movnti %%eax, 40(%3)\n" + " movnti %%edx, 44(%3)\n" +- "13: movl 48(%4), %%eax\n" +- "81: movl 52(%4), %%edx\n" ++ "13: "__copyuser_seg" movl 48(%4), %%eax\n" ++ "81: "__copyuser_seg" movl 52(%4), %%edx\n" + " movnti %%eax, 48(%3)\n" + " movnti %%edx, 52(%3)\n" +- "14: movl 56(%4), %%eax\n" +- "91: movl 60(%4), %%edx\n" ++ "14: "__copyuser_seg" movl 56(%4), %%eax\n" ++ "91: "__copyuser_seg" movl 60(%4), %%edx\n" + " movnti %%eax, 56(%3)\n" + " movnti %%edx, 60(%3)\n" + " addl $-64, %0\n" +@@ -497,9 +616,9 @@ static unsigned long __copy_user_intel_nocache(void *to, + " shrl $2, %0\n" + " andl $3, %%eax\n" + " cld\n" +- "6: rep; movsl\n" ++ "6: rep; "__copyuser_seg" movsl\n" + " movl %%eax,%0\n" +- "7: rep; movsb\n" ++ "7: rep; "__copyuser_seg" movsb\n" + "8:\n" + ".section .fixup,\"ax\"\n" + "9: lea 0(%%eax,%0,4),%0\n" +@@ -542,32 +661,36 @@ static unsigned long __copy_user_intel_nocache(void *to, + */ + unsigned long __copy_user_zeroing_intel(void *to, const void __user *from, + unsigned long size); +-unsigned long __copy_user_intel(void __user *to, const void *from, ++unsigned long __generic_copy_to_user_intel(void __user *to, const void *from, ++ unsigned long size); ++unsigned long __generic_copy_from_user_intel(void *to, const void __user *from, + unsigned long size); + unsigned long __copy_user_zeroing_intel_nocache(void *to, + const void __user *from, unsigned long size); + #endif /* CONFIG_X86_INTEL_USERCOPY */ + + /* Generic arbitrary sized copy. */ +-#define __copy_user(to, from, size) \ ++#define __copy_user(to, from, size, prefix, set, restore) \ + do { \ + int __d0, __d1, __d2; \ + __asm__ __volatile__( \ ++ set \ + " cmp $7,%0\n" \ + " jbe 1f\n" \ + " movl %1,%0\n" \ + " negl %0\n" \ + " andl $7,%0\n" \ + " subl %0,%3\n" \ +- "4: rep; movsb\n" \ ++ "4: rep; "prefix"movsb\n" \ + " movl %3,%0\n" \ + " shrl $2,%0\n" \ + " andl $3,%3\n" \ + " .align 2,0x90\n" \ +- "0: rep; movsl\n" \ ++ "0: rep; "prefix"movsl\n" \ + " movl %3,%0\n" \ +- "1: rep; movsb\n" \ ++ "1: rep; "prefix"movsb\n" \ + "2:\n" \ ++ restore \ + ".section .fixup,\"ax\"\n" \ + "5: addl %3,%0\n" \ + " jmp 2b\n" \ +@@ -595,14 +718,14 @@ do { \ + " negl %0\n" \ + " andl $7,%0\n" \ + " subl %0,%3\n" \ +- "4: rep; movsb\n" \ ++ "4: rep; "__copyuser_seg"movsb\n" \ + " movl %3,%0\n" \ + " shrl $2,%0\n" \ + " andl $3,%3\n" \ + " .align 2,0x90\n" \ +- "0: rep; movsl\n" \ ++ "0: rep; "__copyuser_seg"movsl\n" \ + " movl %3,%0\n" \ +- "1: rep; movsb\n" \ ++ "1: rep; "__copyuser_seg"movsb\n" \ + "2:\n" \ + ".section .fixup,\"ax\"\n" \ + "5: addl %3,%0\n" \ +@@ -688,9 +811,9 @@ survive: + } + #endif + if (movsl_is_ok(to, from, n)) +- __copy_user(to, from, n); ++ __copy_user(to, from, n, "", __COPYUSER_SET_ES, __COPYUSER_RESTORE_ES); + else +- n = __copy_user_intel(to, from, n); ++ n = __generic_copy_to_user_intel(to, from, n); + return n; + } + EXPORT_SYMBOL(__copy_to_user_ll); +@@ -710,10 +833,9 @@ unsigned long __copy_from_user_ll_nozero(void *to, const void __user *from, + unsigned long n) + { + if (movsl_is_ok(to, from, n)) +- __copy_user(to, from, n); ++ __copy_user(to, from, n, __copyuser_seg, "", ""); + else +- n = __copy_user_intel((void __user *)to, +- (const void *)from, n); ++ n = __generic_copy_from_user_intel(to, from, n); + return n; + } + EXPORT_SYMBOL(__copy_from_user_ll_nozero); +@@ -740,65 +862,50 @@ unsigned long __copy_from_user_ll_nocache_nozero(void *to, const void __user *fr + if (n > 64 && cpu_has_xmm2) + n = __copy_user_intel_nocache(to, from, n); + else +- __copy_user(to, from, n); ++ __copy_user(to, from, n, __copyuser_seg, "", ""); + #else +- __copy_user(to, from, n); ++ __copy_user(to, from, n, __copyuser_seg, "", ""); + #endif + return n; + } + EXPORT_SYMBOL(__copy_from_user_ll_nocache_nozero); + +-/** +- * copy_to_user: - Copy a block of data into user space. +- * @to: Destination address, in user space. +- * @from: Source address, in kernel space. +- * @n: Number of bytes to copy. +- * +- * Context: User context only. This function may sleep. +- * +- * Copy data from kernel space to user space. +- * +- * Returns number of bytes that could not be copied. +- * On success, this will be zero. +- */ +-unsigned long +-copy_to_user(void __user *to, const void *from, unsigned long n) +-{ +- if (access_ok(VERIFY_WRITE, to, n)) +- n = __copy_to_user(to, from, n); +- return n; +-} +-EXPORT_SYMBOL(copy_to_user); +- +-/** +- * copy_from_user: - Copy a block of data from user space. +- * @to: Destination address, in kernel space. +- * @from: Source address, in user space. +- * @n: Number of bytes to copy. +- * +- * Context: User context only. This function may sleep. +- * +- * Copy data from user space to kernel space. +- * +- * Returns number of bytes that could not be copied. +- * On success, this will be zero. +- * +- * If some data could not be copied, this function will pad the copied +- * data to the requested size using zero bytes. +- */ +-unsigned long +-_copy_from_user(void *to, const void __user *from, unsigned long n) +-{ +- if (access_ok(VERIFY_READ, from, n)) +- n = __copy_from_user(to, from, n); +- else +- memset(to, 0, n); +- return n; +-} +-EXPORT_SYMBOL(_copy_from_user); +- + void copy_from_user_overflow(void) + { + WARN(1, "Buffer overflow detected!\n"); + } + EXPORT_SYMBOL(copy_from_user_overflow); ++ ++void copy_to_user_overflow(void) ++{ ++ WARN(1, "Buffer overflow detected!\n"); ++} ++EXPORT_SYMBOL(copy_to_user_overflow); ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++void __set_fs(mm_segment_t x) ++{ ++ switch (x.seg) { ++ case 0: ++ loadsegment(gs, 0); ++ break; ++ case TASK_SIZE_MAX: ++ loadsegment(gs, __USER_DS); ++ break; ++ case -1UL: ++ loadsegment(gs, __KERNEL_DS); ++ break; ++ default: ++ BUG(); ++ } ++ return; ++} ++EXPORT_SYMBOL(__set_fs); ++ ++void set_fs(mm_segment_t x) ++{ ++ current_thread_info()->addr_limit = x; ++ __set_fs(x); ++} ++EXPORT_SYMBOL(set_fs); ++#endif +diff --git a/arch/x86/lib/usercopy_64.c b/arch/x86/lib/usercopy_64.c +index 0d0326f..6a6155b 100644 +--- a/arch/x86/lib/usercopy_64.c ++++ b/arch/x86/lib/usercopy_64.c +@@ -16,6 +16,12 @@ unsigned long __clear_user(void __user *addr, unsigned long size) + { + long __d0; + might_fault(); ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if ((unsigned long)addr < PAX_USER_SHADOW_BASE) ++ addr += PAX_USER_SHADOW_BASE; ++#endif ++ + /* no memory constraint because it doesn't change any memory gcc knows + about */ + asm volatile( +@@ -100,12 +106,20 @@ long strlen_user(const char __user *s) + } + EXPORT_SYMBOL(strlen_user); + +-unsigned long copy_in_user(void __user *to, const void __user *from, unsigned len) ++unsigned long copy_in_user(void __user *to, const void __user *from, unsigned long len) + { +- if (access_ok(VERIFY_WRITE, to, len) && access_ok(VERIFY_READ, from, len)) { +- return copy_user_generic((__force void *)to, (__force void *)from, len); +- } +- return len; ++ if (access_ok(VERIFY_WRITE, to, len) && access_ok(VERIFY_READ, from, len)) { ++ ++#ifdef CONFIG_PAX_MEMORY_UDEREF ++ if ((unsigned long)to < PAX_USER_SHADOW_BASE) ++ to += PAX_USER_SHADOW_BASE; ++ if ((unsigned long)from < PAX_USER_SHADOW_BASE) ++ from += PAX_USER_SHADOW_BASE; ++#endif ++ ++ return copy_user_generic((void __force_kernel *)to, (void __force_kernel *)from, len); ++ } ++ return len; + } + EXPORT_SYMBOL(copy_in_user); + +@@ -115,7 +129,7 @@ EXPORT_SYMBOL(copy_in_user); + * it is not necessary to optimize tail handling. + */ + unsigned long +-copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest) ++copy_user_handle_tail(char __user *to, char __user *from, unsigned long len, unsigned zerorest) + { + char c; + unsigned zero_len; +@@ -132,3 +146,15 @@ copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest) + break; + return len; + } ++ ++void copy_from_user_overflow(void) ++{ ++ WARN(1, "Buffer overflow detected!\n"); ++} ++EXPORT_SYMBOL(copy_from_user_overflow); ++ ++void copy_to_user_overflow(void) ++{ ++ WARN(1, "Buffer overflow detected!\n"); ++} ++EXPORT_SYMBOL(copy_to_user_overflow); +diff --git a/arch/x86/mm/extable.c b/arch/x86/mm/extable.c +index 1fb85db..8b3540b 100644 +--- a/arch/x86/mm/extable.c ++++ b/arch/x86/mm/extable.c +@@ -8,7 +8,7 @@ int fixup_exception(struct pt_regs *regs) + const struct exception_table_entry *fixup; + + #ifdef CONFIG_PNPBIOS +- if (unlikely(SEGMENT_IS_PNP_CODE(regs->cs))) { ++ if (unlikely(!v8086_mode(regs) && SEGMENT_IS_PNP_CODE(regs->cs))) { + extern u32 pnp_bios_fault_eip, pnp_bios_fault_esp; + extern u32 pnp_bios_is_utter_crap; + pnp_bios_is_utter_crap = 1; +diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c +index 3ecfd1a..304d554 100644 +--- a/arch/x86/mm/fault.c ++++ b/arch/x86/mm/fault.c +@@ -13,11 +13,18 @@ + #include <linux/perf_event.h> /* perf_sw_event */ + #include <linux/hugetlb.h> /* hstate_index_to_shift */ + #include <linux/prefetch.h> /* prefetchw */ ++#include <linux/unistd.h> ++#include <linux/compiler.h> + + #include <asm/traps.h> /* dotraplinkage, ... */ + #include <asm/pgalloc.h> /* pgd_*(), ... */ + #include <asm/kmemcheck.h> /* kmemcheck_*(), ... */ + #include <asm/fixmap.h> /* VSYSCALL_START */ ++#include <asm/tlbflush.h> ++ ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++#include <asm/stacktrace.h> ++#endif + + /* + * Page fault error code bits: +@@ -55,7 +62,7 @@ static inline int __kprobes notify_page_fault(struct pt_regs *regs) + int ret = 0; + + /* kprobe_running() needs smp_processor_id() */ +- if (kprobes_built_in() && !user_mode_vm(regs)) { ++ if (kprobes_built_in() && !user_mode(regs)) { + preempt_disable(); + if (kprobe_running() && kprobe_fault_handler(regs, 14)) + ret = 1; +@@ -116,7 +123,10 @@ check_prefetch_opcode(struct pt_regs *regs, unsigned char *instr, + return !instr_lo || (instr_lo>>1) == 1; + case 0x00: + /* Prefetch instruction is 0x0F0D or 0x0F18 */ +- if (probe_kernel_address(instr, opcode)) ++ if (user_mode(regs)) { ++ if (__copy_from_user_inatomic(&opcode, (unsigned char __force_user *)(instr), 1)) ++ return 0; ++ } else if (probe_kernel_address(instr, opcode)) + return 0; + + *prefetch = (instr_lo == 0xF) && +@@ -150,7 +160,10 @@ is_prefetch(struct pt_regs *regs, unsigned long error_code, unsigned long addr) + while (instr < max_instr) { + unsigned char opcode; + +- if (probe_kernel_address(instr, opcode)) ++ if (user_mode(regs)) { ++ if (__copy_from_user_inatomic(&opcode, (unsigned char __force_user *)(instr), 1)) ++ break; ++ } else if (probe_kernel_address(instr, opcode)) + break; + + instr++; +@@ -181,6 +194,34 @@ force_sig_info_fault(int si_signo, int si_code, unsigned long address, + force_sig_info(si_signo, &info, tsk); + } + ++#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) ++static bool pax_is_fetch_fault(struct pt_regs *regs, unsigned long error_code, unsigned long address); ++#endif ++ ++#ifdef CONFIG_PAX_EMUTRAMP ++static int pax_handle_fetch_fault(struct pt_regs *regs); ++#endif ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++static inline pmd_t * pax_get_pmd(struct mm_struct *mm, unsigned long address) ++{ ++ pgd_t *pgd; ++ pud_t *pud; ++ pmd_t *pmd; ++ ++ pgd = pgd_offset(mm, address); ++ if (!pgd_present(*pgd)) ++ return NULL; ++ pud = pud_offset(pgd, address); ++ if (!pud_present(*pud)) ++ return NULL; ++ pmd = pmd_offset(pud, address); ++ if (!pmd_present(*pmd)) ++ return NULL; ++ return pmd; ++} ++#endif ++ + DEFINE_SPINLOCK(pgd_lock); + LIST_HEAD(pgd_list); + +@@ -231,10 +272,22 @@ void vmalloc_sync_all(void) + for (address = VMALLOC_START & PMD_MASK; + address >= TASK_SIZE && address < FIXADDR_TOP; + address += PMD_SIZE) { ++ ++#ifdef CONFIG_PAX_PER_CPU_PGD ++ unsigned long cpu; ++#else + struct page *page; ++#endif + + spin_lock(&pgd_lock); ++ ++#ifdef CONFIG_PAX_PER_CPU_PGD ++ for (cpu = 0; cpu < nr_cpu_ids; ++cpu) { ++ pgd_t *pgd = get_cpu_pgd(cpu); ++ pmd_t *ret; ++#else + list_for_each_entry(page, &pgd_list, lru) { ++ pgd_t *pgd = page_address(page); + spinlock_t *pgt_lock; + pmd_t *ret; + +@@ -242,8 +295,13 @@ void vmalloc_sync_all(void) + pgt_lock = &pgd_page_get_mm(page)->page_table_lock; + + spin_lock(pgt_lock); +- ret = vmalloc_sync_one(page_address(page), address); ++#endif ++ ++ ret = vmalloc_sync_one(pgd, address); ++ ++#ifndef CONFIG_PAX_PER_CPU_PGD + spin_unlock(pgt_lock); ++#endif + + if (!ret) + break; +@@ -277,6 +335,11 @@ static noinline __kprobes int vmalloc_fault(unsigned long address) + * an interrupt in the middle of a task switch.. + */ + pgd_paddr = read_cr3(); ++ ++#ifdef CONFIG_PAX_PER_CPU_PGD ++ BUG_ON(__pa(get_cpu_pgd(smp_processor_id())) != (pgd_paddr & PHYSICAL_PAGE_MASK)); ++#endif ++ + pmd_k = vmalloc_sync_one(__va(pgd_paddr), address); + if (!pmd_k) + return -1; +@@ -372,7 +435,14 @@ static noinline __kprobes int vmalloc_fault(unsigned long address) + * happen within a race in page table update. In the later + * case just flush: + */ ++ ++#ifdef CONFIG_PAX_PER_CPU_PGD ++ BUG_ON(__pa(get_cpu_pgd(smp_processor_id())) != (read_cr3() & PHYSICAL_PAGE_MASK)); ++ pgd = pgd_offset_cpu(smp_processor_id(), address); ++#else + pgd = pgd_offset(current->active_mm, address); ++#endif ++ + pgd_ref = pgd_offset_k(address); + if (pgd_none(*pgd_ref)) + return -1; +@@ -540,7 +610,7 @@ static int is_errata93(struct pt_regs *regs, unsigned long address) + static int is_errata100(struct pt_regs *regs, unsigned long address) + { + #ifdef CONFIG_X86_64 +- if ((regs->cs == __USER32_CS || (regs->cs & (1<<2))) && (address >> 32)) ++ if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT)) && (address >> 32)) + return 1; + #endif + return 0; +@@ -567,7 +637,7 @@ static int is_f00f_bug(struct pt_regs *regs, unsigned long address) + } + + static const char nx_warning[] = KERN_CRIT +-"kernel tried to execute NX-protected page - exploit attempt? (uid: %d)\n"; ++"kernel tried to execute NX-protected page - exploit attempt? (uid: %d, task: %s, pid: %d)\n"; + + static void + show_fault_oops(struct pt_regs *regs, unsigned long error_code, +@@ -576,15 +646,26 @@ show_fault_oops(struct pt_regs *regs, unsigned long error_code, + if (!oops_may_print()) + return; + +- if (error_code & PF_INSTR) { ++ if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR)) { + unsigned int level; + + pte_t *pte = lookup_address(address, &level); + + if (pte && pte_present(*pte) && !pte_exec(*pte)) +- printk(nx_warning, current_uid()); ++ printk(nx_warning, current_uid(), current->comm, task_pid_nr(current)); + } + ++#ifdef CONFIG_PAX_KERNEXEC ++ if (init_mm.start_code <= address && address < init_mm.end_code) { ++ if (current->signal->curr_ip) ++ printk(KERN_ERR "PAX: From %pI4: %s:%d, uid/euid: %u/%u, attempted to modify kernel code\n", ++ ¤t->signal->curr_ip, current->comm, task_pid_nr(current), current_uid(), current_euid()); ++ else ++ printk(KERN_ERR "PAX: %s:%d, uid/euid: %u/%u, attempted to modify kernel code\n", ++ current->comm, task_pid_nr(current), current_uid(), current_euid()); ++ } ++#endif ++ + printk(KERN_ALERT "BUG: unable to handle kernel "); + if (address < PAGE_SIZE) + printk(KERN_CONT "NULL pointer dereference"); +@@ -748,6 +829,21 @@ __bad_area_nosemaphore(struct pt_regs *regs, unsigned long error_code, + } + #endif + ++#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) ++ if (pax_is_fetch_fault(regs, error_code, address)) { ++ ++#ifdef CONFIG_PAX_EMUTRAMP ++ switch (pax_handle_fetch_fault(regs)) { ++ case 2: ++ return; ++ } ++#endif ++ ++ pax_report_fault(regs, (void *)regs->ip, (void *)regs->sp); ++ do_group_exit(SIGKILL); ++ } ++#endif ++ + if (unlikely(show_unhandled_signals)) + show_signal_msg(regs, error_code, address, tsk); + +@@ -844,7 +940,7 @@ do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address, + if (fault & (VM_FAULT_HWPOISON|VM_FAULT_HWPOISON_LARGE)) { + printk(KERN_ERR + "MCE: Killing %s:%d due to hardware memory corruption fault at %lx\n", +- tsk->comm, tsk->pid, address); ++ tsk->comm, task_pid_nr(tsk), address); + code = BUS_MCEERR_AR; + } + #endif +@@ -900,6 +996,99 @@ static int spurious_fault_check(unsigned long error_code, pte_t *pte) + return 1; + } + ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) ++static int pax_handle_pageexec_fault(struct pt_regs *regs, struct mm_struct *mm, unsigned long address, unsigned long error_code) ++{ ++ pte_t *pte; ++ pmd_t *pmd; ++ spinlock_t *ptl; ++ unsigned char pte_mask; ++ ++ if ((__supported_pte_mask & _PAGE_NX) || (error_code & (PF_PROT|PF_USER)) != (PF_PROT|PF_USER) || v8086_mode(regs) || ++ !(mm->pax_flags & MF_PAX_PAGEEXEC)) ++ return 0; ++ ++ /* PaX: it's our fault, let's handle it if we can */ ++ ++ /* PaX: take a look at read faults before acquiring any locks */ ++ if (unlikely(!(error_code & PF_WRITE) && (regs->ip == address))) { ++ /* instruction fetch attempt from a protected page in user mode */ ++ up_read(&mm->mmap_sem); ++ ++#ifdef CONFIG_PAX_EMUTRAMP ++ switch (pax_handle_fetch_fault(regs)) { ++ case 2: ++ return 1; ++ } ++#endif ++ ++ pax_report_fault(regs, (void *)regs->ip, (void *)regs->sp); ++ do_group_exit(SIGKILL); ++ } ++ ++ pmd = pax_get_pmd(mm, address); ++ if (unlikely(!pmd)) ++ return 0; ++ ++ pte = pte_offset_map_lock(mm, pmd, address, &ptl); ++ if (unlikely(!(pte_val(*pte) & _PAGE_PRESENT) || pte_user(*pte))) { ++ pte_unmap_unlock(pte, ptl); ++ return 0; ++ } ++ ++ if (unlikely((error_code & PF_WRITE) && !pte_write(*pte))) { ++ /* write attempt to a protected page in user mode */ ++ pte_unmap_unlock(pte, ptl); ++ return 0; ++ } ++ ++#ifdef CONFIG_SMP ++ if (likely(address > get_limit(regs->cs) && cpu_isset(smp_processor_id(), mm->context.cpu_user_cs_mask))) ++#else ++ if (likely(address > get_limit(regs->cs))) ++#endif ++ { ++ set_pte(pte, pte_mkread(*pte)); ++ __flush_tlb_one(address); ++ pte_unmap_unlock(pte, ptl); ++ up_read(&mm->mmap_sem); ++ return 1; ++ } ++ ++ pte_mask = _PAGE_ACCESSED | _PAGE_USER | ((error_code & PF_WRITE) << (_PAGE_BIT_DIRTY-1)); ++ ++ /* ++ * PaX: fill DTLB with user rights and retry ++ */ ++ __asm__ __volatile__ ( ++ "orb %2,(%1)\n" ++#if defined(CONFIG_M586) || defined(CONFIG_M586TSC) ++/* ++ * PaX: let this uncommented 'invlpg' remind us on the behaviour of Intel's ++ * (and AMD's) TLBs. namely, they do not cache PTEs that would raise *any* ++ * page fault when examined during a TLB load attempt. this is true not only ++ * for PTEs holding a non-present entry but also present entries that will ++ * raise a page fault (such as those set up by PaX, or the copy-on-write ++ * mechanism). in effect it means that we do *not* need to flush the TLBs ++ * for our target pages since their PTEs are simply not in the TLBs at all. ++ ++ * the best thing in omitting it is that we gain around 15-20% speed in the ++ * fast path of the page fault handler and can get rid of tracing since we ++ * can no longer flush unintended entries. ++ */ ++ "invlpg (%0)\n" ++#endif ++ __copyuser_seg"testb $0,(%0)\n" ++ "xorb %3,(%1)\n" ++ : ++ : "r" (address), "r" (pte), "q" (pte_mask), "i" (_PAGE_USER) ++ : "memory", "cc"); ++ pte_unmap_unlock(pte, ptl); ++ up_read(&mm->mmap_sem); ++ return 1; ++} ++#endif ++ + /* + * Handle a spurious fault caused by a stale TLB entry. + * +@@ -972,6 +1161,9 @@ int show_unhandled_signals = 1; + static inline int + access_error(unsigned long error_code, struct vm_area_struct *vma) + { ++ if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR) && !(vma->vm_flags & VM_EXEC)) ++ return 1; ++ + if (error_code & PF_WRITE) { + /* write, present and write, not present: */ + if (unlikely(!(vma->vm_flags & VM_WRITE))) +@@ -1005,18 +1197,33 @@ do_page_fault(struct pt_regs *regs, unsigned long error_code) + { + struct vm_area_struct *vma; + struct task_struct *tsk; +- unsigned long address; + struct mm_struct *mm; + int fault; + int write = error_code & PF_WRITE; + unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE | + (write ? FAULT_FLAG_WRITE : 0); + +- tsk = current; +- mm = tsk->mm; +- + /* Get the faulting address: */ +- address = read_cr2(); ++ unsigned long address = read_cr2(); ++ ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++ if (!user_mode(regs) && address < 2 * PAX_USER_SHADOW_BASE) { ++ if (!search_exception_tables(regs->ip)) { ++ printk(KERN_ERR "PAX: please report this to pageexec@freemail.hu\n"); ++ bad_area_nosemaphore(regs, error_code, address); ++ return; ++ } ++ if (address < PAX_USER_SHADOW_BASE) { ++ printk(KERN_ERR "PAX: please report this to pageexec@freemail.hu\n"); ++ printk(KERN_ERR "PAX: faulting IP: %pS\n", (void *)regs->ip); ++ show_trace_log_lvl(NULL, NULL, (void *)regs->sp, regs->bp, KERN_ERR); ++ } else ++ address -= PAX_USER_SHADOW_BASE; ++ } ++#endif ++ ++ tsk = current; ++ mm = tsk->mm; + + /* + * Detect and handle instructions that would cause a page fault for +@@ -1077,7 +1284,7 @@ do_page_fault(struct pt_regs *regs, unsigned long error_code) + * User-mode registers count as a user access even for any + * potential system fault or CPU buglet: + */ +- if (user_mode_vm(regs)) { ++ if (user_mode(regs)) { + local_irq_enable(); + error_code |= PF_USER; + } else { +@@ -1132,6 +1339,11 @@ retry: + might_sleep(); + } + ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) ++ if (pax_handle_pageexec_fault(regs, mm, address, error_code)) ++ return; ++#endif ++ + vma = find_vma(mm, address); + if (unlikely(!vma)) { + bad_area(regs, error_code, address); +@@ -1143,18 +1355,24 @@ retry: + bad_area(regs, error_code, address); + return; + } +- if (error_code & PF_USER) { +- /* +- * Accessing the stack below %sp is always a bug. +- * The large cushion allows instructions like enter +- * and pusha to work. ("enter $65535, $31" pushes +- * 32 pointers and then decrements %sp by 65535.) +- */ +- if (unlikely(address + 65536 + 32 * sizeof(unsigned long) < regs->sp)) { +- bad_area(regs, error_code, address); +- return; +- } ++ /* ++ * Accessing the stack below %sp is always a bug. ++ * The large cushion allows instructions like enter ++ * and pusha to work. ("enter $65535, $31" pushes ++ * 32 pointers and then decrements %sp by 65535.) ++ */ ++ if (unlikely(address + 65536 + 32 * sizeof(unsigned long) < task_pt_regs(tsk)->sp)) { ++ bad_area(regs, error_code, address); ++ return; + } ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (unlikely((mm->pax_flags & MF_PAX_SEGMEXEC) && vma->vm_end - SEGMEXEC_TASK_SIZE - 1 < address - SEGMEXEC_TASK_SIZE - 1)) { ++ bad_area(regs, error_code, address); ++ return; ++ } ++#endif ++ + if (unlikely(expand_stack(vma, address))) { + bad_area(regs, error_code, address); + return; +@@ -1209,3 +1427,292 @@ good_area: + + up_read(&mm->mmap_sem); + } ++ ++#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) ++static bool pax_is_fetch_fault(struct pt_regs *regs, unsigned long error_code, unsigned long address) ++{ ++ struct mm_struct *mm = current->mm; ++ unsigned long ip = regs->ip; ++ ++ if (v8086_mode(regs)) ++ ip = ((regs->cs & 0xffff) << 4) + (ip & 0xffff); ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ if (mm->pax_flags & MF_PAX_PAGEEXEC) { ++ if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR)) ++ return true; ++ if (!(error_code & (PF_PROT | PF_WRITE)) && ip == address) ++ return true; ++ return false; ++ } ++#endif ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (mm->pax_flags & MF_PAX_SEGMEXEC) { ++ if (!(error_code & (PF_PROT | PF_WRITE)) && (ip + SEGMEXEC_TASK_SIZE == address)) ++ return true; ++ return false; ++ } ++#endif ++ ++ return false; ++} ++#endif ++ ++#ifdef CONFIG_PAX_EMUTRAMP ++static int pax_handle_fetch_fault_32(struct pt_regs *regs) ++{ ++ int err; ++ ++ do { /* PaX: libffi trampoline emulation */ ++ unsigned char mov, jmp; ++ unsigned int addr1, addr2; ++ ++#ifdef CONFIG_X86_64 ++ if ((regs->ip + 9) >> 32) ++ break; ++#endif ++ ++ err = get_user(mov, (unsigned char __user *)regs->ip); ++ err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1)); ++ err |= get_user(jmp, (unsigned char __user *)(regs->ip + 5)); ++ err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6)); ++ ++ if (err) ++ break; ++ ++ if (mov == 0xB8 && jmp == 0xE9) { ++ regs->ax = addr1; ++ regs->ip = (unsigned int)(regs->ip + addr2 + 10); ++ return 2; ++ } ++ } while (0); ++ ++ do { /* PaX: gcc trampoline emulation #1 */ ++ unsigned char mov1, mov2; ++ unsigned short jmp; ++ unsigned int addr1, addr2; ++ ++#ifdef CONFIG_X86_64 ++ if ((regs->ip + 11) >> 32) ++ break; ++#endif ++ ++ err = get_user(mov1, (unsigned char __user *)regs->ip); ++ err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1)); ++ err |= get_user(mov2, (unsigned char __user *)(regs->ip + 5)); ++ err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6)); ++ err |= get_user(jmp, (unsigned short __user *)(regs->ip + 10)); ++ ++ if (err) ++ break; ++ ++ if (mov1 == 0xB9 && mov2 == 0xB8 && jmp == 0xE0FF) { ++ regs->cx = addr1; ++ regs->ax = addr2; ++ regs->ip = addr2; ++ return 2; ++ } ++ } while (0); ++ ++ do { /* PaX: gcc trampoline emulation #2 */ ++ unsigned char mov, jmp; ++ unsigned int addr1, addr2; ++ ++#ifdef CONFIG_X86_64 ++ if ((regs->ip + 9) >> 32) ++ break; ++#endif ++ ++ err = get_user(mov, (unsigned char __user *)regs->ip); ++ err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1)); ++ err |= get_user(jmp, (unsigned char __user *)(regs->ip + 5)); ++ err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6)); ++ ++ if (err) ++ break; ++ ++ if (mov == 0xB9 && jmp == 0xE9) { ++ regs->cx = addr1; ++ regs->ip = (unsigned int)(regs->ip + addr2 + 10); ++ return 2; ++ } ++ } while (0); ++ ++ return 1; /* PaX in action */ ++} ++ ++#ifdef CONFIG_X86_64 ++static int pax_handle_fetch_fault_64(struct pt_regs *regs) ++{ ++ int err; ++ ++ do { /* PaX: libffi trampoline emulation */ ++ unsigned short mov1, mov2, jmp1; ++ unsigned char stcclc, jmp2; ++ unsigned long addr1, addr2; ++ ++ err = get_user(mov1, (unsigned short __user *)regs->ip); ++ err |= get_user(addr1, (unsigned long __user *)(regs->ip + 2)); ++ err |= get_user(mov2, (unsigned short __user *)(regs->ip + 10)); ++ err |= get_user(addr2, (unsigned long __user *)(regs->ip + 12)); ++ err |= get_user(stcclc, (unsigned char __user *)(regs->ip + 20)); ++ err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 21)); ++ err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 23)); ++ ++ if (err) ++ break; ++ ++ if (mov1 == 0xBB49 && mov2 == 0xBA49 && (stcclc == 0xF8 || stcclc == 0xF9) && jmp1 == 0xFF49 && jmp2 == 0xE3) { ++ regs->r11 = addr1; ++ regs->r10 = addr2; ++ if (stcclc == 0xF8) ++ regs->flags &= ~X86_EFLAGS_CF; ++ else ++ regs->flags |= X86_EFLAGS_CF; ++ regs->ip = addr1; ++ return 2; ++ } ++ } while (0); ++ ++ do { /* PaX: gcc trampoline emulation #1 */ ++ unsigned short mov1, mov2, jmp1; ++ unsigned char jmp2; ++ unsigned int addr1; ++ unsigned long addr2; ++ ++ err = get_user(mov1, (unsigned short __user *)regs->ip); ++ err |= get_user(addr1, (unsigned int __user *)(regs->ip + 2)); ++ err |= get_user(mov2, (unsigned short __user *)(regs->ip + 6)); ++ err |= get_user(addr2, (unsigned long __user *)(regs->ip + 8)); ++ err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 16)); ++ err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 18)); ++ ++ if (err) ++ break; ++ ++ if (mov1 == 0xBB41 && mov2 == 0xBA49 && jmp1 == 0xFF49 && jmp2 == 0xE3) { ++ regs->r11 = addr1; ++ regs->r10 = addr2; ++ regs->ip = addr1; ++ return 2; ++ } ++ } while (0); ++ ++ do { /* PaX: gcc trampoline emulation #2 */ ++ unsigned short mov1, mov2, jmp1; ++ unsigned char jmp2; ++ unsigned long addr1, addr2; ++ ++ err = get_user(mov1, (unsigned short __user *)regs->ip); ++ err |= get_user(addr1, (unsigned long __user *)(regs->ip + 2)); ++ err |= get_user(mov2, (unsigned short __user *)(regs->ip + 10)); ++ err |= get_user(addr2, (unsigned long __user *)(regs->ip + 12)); ++ err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 20)); ++ err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 22)); ++ ++ if (err) ++ break; ++ ++ if (mov1 == 0xBB49 && mov2 == 0xBA49 && jmp1 == 0xFF49 && jmp2 == 0xE3) { ++ regs->r11 = addr1; ++ regs->r10 = addr2; ++ regs->ip = addr1; ++ return 2; ++ } ++ } while (0); ++ ++ return 1; /* PaX in action */ ++} ++#endif ++ ++/* ++ * PaX: decide what to do with offenders (regs->ip = fault address) ++ * ++ * returns 1 when task should be killed ++ * 2 when gcc trampoline was detected ++ */ ++static int pax_handle_fetch_fault(struct pt_regs *regs) ++{ ++ if (v8086_mode(regs)) ++ return 1; ++ ++ if (!(current->mm->pax_flags & MF_PAX_EMUTRAMP)) ++ return 1; ++ ++#ifdef CONFIG_X86_32 ++ return pax_handle_fetch_fault_32(regs); ++#else ++ if (regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT)) ++ return pax_handle_fetch_fault_32(regs); ++ else ++ return pax_handle_fetch_fault_64(regs); ++#endif ++} ++#endif ++ ++#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) ++void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) ++{ ++ long i; ++ ++ printk(KERN_ERR "PAX: bytes at PC: "); ++ for (i = 0; i < 20; i++) { ++ unsigned char c; ++ if (get_user(c, (unsigned char __force_user *)pc+i)) ++ printk(KERN_CONT "?? "); ++ else ++ printk(KERN_CONT "%02x ", c); ++ } ++ printk("\n"); ++ ++ printk(KERN_ERR "PAX: bytes at SP-%lu: ", (unsigned long)sizeof(long)); ++ for (i = -1; i < 80 / (long)sizeof(long); i++) { ++ unsigned long c; ++ if (get_user(c, (unsigned long __force_user *)sp+i)) { ++#ifdef CONFIG_X86_32 ++ printk(KERN_CONT "???????? "); ++#else ++ if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT))) ++ printk(KERN_CONT "???????? ???????? "); ++ else ++ printk(KERN_CONT "???????????????? "); ++#endif ++ } else { ++#ifdef CONFIG_X86_64 ++ if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT))) { ++ printk(KERN_CONT "%08x ", (unsigned int)c); ++ printk(KERN_CONT "%08x ", (unsigned int)(c >> 32)); ++ } else ++#endif ++ printk(KERN_CONT "%0*lx ", 2 * (int)sizeof(long), c); ++ } ++ } ++ printk("\n"); ++} ++#endif ++ ++/** ++ * probe_kernel_write(): safely attempt to write to a location ++ * @dst: address to write to ++ * @src: pointer to the data that shall be written ++ * @size: size of the data chunk ++ * ++ * Safely write to address @dst from the buffer at @src. If a kernel fault ++ * happens, handle that and return -EFAULT. ++ */ ++long notrace probe_kernel_write(void *dst, const void *src, size_t size) ++{ ++ long ret; ++ mm_segment_t old_fs = get_fs(); ++ ++ set_fs(KERNEL_DS); ++ pagefault_disable(); ++ pax_open_kernel(); ++ ret = __copy_to_user_inatomic((void __force_user *)dst, src, size); ++ pax_close_kernel(); ++ pagefault_enable(); ++ set_fs(old_fs); ++ ++ return ret ? -EFAULT : 0; ++} +diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c +index dd74e46..7d26398 100644 +--- a/arch/x86/mm/gup.c ++++ b/arch/x86/mm/gup.c +@@ -255,7 +255,7 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write, + addr = start; + len = (unsigned long) nr_pages << PAGE_SHIFT; + end = start + len; +- if (unlikely(!access_ok(write ? VERIFY_WRITE : VERIFY_READ, ++ if (unlikely(!__access_ok(write ? VERIFY_WRITE : VERIFY_READ, + (void __user *)start, len))) + return 0; + +diff --git a/arch/x86/mm/highmem_32.c b/arch/x86/mm/highmem_32.c +index 6f31ee5..8ee4164 100644 +--- a/arch/x86/mm/highmem_32.c ++++ b/arch/x86/mm/highmem_32.c +@@ -44,7 +44,11 @@ void *kmap_atomic_prot(struct page *page, pgprot_t prot) + idx = type + KM_TYPE_NR*smp_processor_id(); + vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); + BUG_ON(!pte_none(*(kmap_pte-idx))); ++ ++ pax_open_kernel(); + set_pte(kmap_pte-idx, mk_pte(page, prot)); ++ pax_close_kernel(); ++ + arch_flush_lazy_mmu_mode(); + + return (void *)vaddr; +diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c +index f6679a7..8f795a3 100644 +--- a/arch/x86/mm/hugetlbpage.c ++++ b/arch/x86/mm/hugetlbpage.c +@@ -266,13 +266,20 @@ static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file, + struct hstate *h = hstate_file(file); + struct mm_struct *mm = current->mm; + struct vm_area_struct *vma; +- unsigned long start_addr; ++ unsigned long start_addr, pax_task_size = TASK_SIZE; ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (mm->pax_flags & MF_PAX_SEGMEXEC) ++ pax_task_size = SEGMEXEC_TASK_SIZE; ++#endif ++ ++ pax_task_size -= PAGE_SIZE; + + if (len > mm->cached_hole_size) { +- start_addr = mm->free_area_cache; ++ start_addr = mm->free_area_cache; + } else { +- start_addr = TASK_UNMAPPED_BASE; +- mm->cached_hole_size = 0; ++ start_addr = mm->mmap_base; ++ mm->cached_hole_size = 0; + } + + full_search: +@@ -280,26 +287,27 @@ full_search: + + for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { + /* At this point: (!vma || addr < vma->vm_end). */ +- if (TASK_SIZE - len < addr) { ++ if (pax_task_size - len < addr) { + /* + * Start a new search - just in case we missed + * some holes. + */ +- if (start_addr != TASK_UNMAPPED_BASE) { +- start_addr = TASK_UNMAPPED_BASE; ++ if (start_addr != mm->mmap_base) { ++ start_addr = mm->mmap_base; + mm->cached_hole_size = 0; + goto full_search; + } + return -ENOMEM; + } +- if (!vma || addr + len <= vma->vm_start) { +- mm->free_area_cache = addr + len; +- return addr; +- } ++ if (check_heap_stack_gap(vma, addr, len)) ++ break; + if (addr + mm->cached_hole_size < vma->vm_start) + mm->cached_hole_size = vma->vm_start - addr; + addr = ALIGN(vma->vm_end, huge_page_size(h)); + } ++ ++ mm->free_area_cache = addr + len; ++ return addr; + } + + static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file, +@@ -310,9 +318,8 @@ static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file, + struct mm_struct *mm = current->mm; + struct vm_area_struct *vma; + unsigned long base = mm->mmap_base; +- unsigned long addr = addr0; ++ unsigned long addr; + unsigned long largest_hole = mm->cached_hole_size; +- unsigned long start_addr; + + /* don't allow allocations above current base */ + if (mm->free_area_cache > base) +@@ -322,16 +329,15 @@ static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file, + largest_hole = 0; + mm->free_area_cache = base; + } +-try_again: +- start_addr = mm->free_area_cache; + + /* make sure it can fit in the remaining address space */ + if (mm->free_area_cache < len) + goto fail; + + /* either no address requested or can't fit in requested address hole */ +- addr = (mm->free_area_cache - len) & huge_page_mask(h); ++ addr = mm->free_area_cache - len; + do { ++ addr &= huge_page_mask(h); + /* + * Lookup failure means no vma is above this address, + * i.e. return with success: +@@ -340,10 +346,10 @@ try_again: + if (!vma) + return addr; + +- if (addr + len <= vma->vm_start) { ++ if (check_heap_stack_gap(vma, addr, len)) { + /* remember the address as a hint for next time */ +- mm->cached_hole_size = largest_hole; +- return (mm->free_area_cache = addr); ++ mm->cached_hole_size = largest_hole; ++ return (mm->free_area_cache = addr); + } else if (mm->free_area_cache == vma->vm_end) { + /* pull free_area_cache down to the first hole */ + mm->free_area_cache = vma->vm_start; +@@ -352,29 +358,34 @@ try_again: + + /* remember the largest hole we saw so far */ + if (addr + largest_hole < vma->vm_start) +- largest_hole = vma->vm_start - addr; ++ largest_hole = vma->vm_start - addr; + + /* try just below the current vma->vm_start */ +- addr = (vma->vm_start - len) & huge_page_mask(h); +- } while (len <= vma->vm_start); ++ addr = skip_heap_stack_gap(vma, len); ++ } while (!IS_ERR_VALUE(addr)); + + fail: + /* +- * if hint left us with no space for the requested +- * mapping then try again: +- */ +- if (start_addr != base) { +- mm->free_area_cache = base; +- largest_hole = 0; +- goto try_again; +- } +- /* + * A failed mmap() very likely causes application failure, + * so fall back to the bottom-up function here. This scenario + * can happen with large stack limits and large mmap() + * allocations. + */ +- mm->free_area_cache = TASK_UNMAPPED_BASE; ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (mm->pax_flags & MF_PAX_SEGMEXEC) ++ mm->mmap_base = SEGMEXEC_TASK_UNMAPPED_BASE; ++ else ++#endif ++ ++ mm->mmap_base = TASK_UNMAPPED_BASE; ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base += mm->delta_mmap; ++#endif ++ ++ mm->free_area_cache = mm->mmap_base; + mm->cached_hole_size = ~0UL; + addr = hugetlb_get_unmapped_area_bottomup(file, addr0, + len, pgoff, flags); +@@ -382,6 +393,7 @@ fail: + /* + * Restore the topdown base: + */ ++ mm->mmap_base = base; + mm->free_area_cache = base; + mm->cached_hole_size = ~0UL; + +@@ -395,10 +407,19 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr, + struct hstate *h = hstate_file(file); + struct mm_struct *mm = current->mm; + struct vm_area_struct *vma; ++ unsigned long pax_task_size = TASK_SIZE; + + if (len & ~huge_page_mask(h)) + return -EINVAL; +- if (len > TASK_SIZE) ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (mm->pax_flags & MF_PAX_SEGMEXEC) ++ pax_task_size = SEGMEXEC_TASK_SIZE; ++#endif ++ ++ pax_task_size -= PAGE_SIZE; ++ ++ if (len > pax_task_size) + return -ENOMEM; + + if (flags & MAP_FIXED) { +@@ -410,8 +431,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr, + if (addr) { + addr = ALIGN(addr, huge_page_size(h)); + vma = find_vma(mm, addr); +- if (TASK_SIZE - len >= addr && +- (!vma || addr + len <= vma->vm_start)) ++ if (pax_task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) + return addr; + } + if (mm->get_unmapped_area == arch_get_unmapped_area) +diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c +index 4f0cec7..00976ce 100644 +--- a/arch/x86/mm/init.c ++++ b/arch/x86/mm/init.c +@@ -16,6 +16,8 @@ + #include <asm/tlb.h> + #include <asm/proto.h> + #include <asm/dma.h> /* for MAX_DMA_PFN */ ++#include <asm/desc.h> ++#include <asm/bios_ebda.h> + + unsigned long __initdata pgt_buf_start; + unsigned long __meminitdata pgt_buf_end; +@@ -32,7 +34,7 @@ int direct_gbpages + static void __init find_early_table_space(unsigned long end, int use_pse, + int use_gbpages) + { +- unsigned long puds, pmds, ptes, tables, start = 0, good_end = end; ++ unsigned long puds, pmds, ptes, tables, start = 0x100000, good_end = end; + phys_addr_t base; + + puds = (end + PUD_SIZE - 1) >> PUD_SHIFT; +@@ -311,10 +313,37 @@ unsigned long __init_refok init_memory_mapping(unsigned long start, + * Access has to be given to non-kernel-ram areas as well, these contain the PCI + * mmio resources as well as potential bios/acpi data regions. + */ ++ ++#ifdef CONFIG_GRKERNSEC_KMEM ++static unsigned int ebda_start __read_only; ++static unsigned int ebda_end __read_only; ++#endif ++ + int devmem_is_allowed(unsigned long pagenr) + { ++#ifdef CONFIG_GRKERNSEC_KMEM ++ /* allow BDA */ ++ if (!pagenr) ++ return 1; ++ /* allow EBDA */ ++ if (pagenr >= ebda_start && pagenr < ebda_end) ++ return 1; ++#else ++ if (!pagenr) ++ return 1; ++#ifdef CONFIG_VM86 ++ if (pagenr < (ISA_START_ADDRESS >> PAGE_SHIFT)) ++ return 1; ++#endif ++#endif ++ ++ if ((ISA_START_ADDRESS >> PAGE_SHIFT) <= pagenr && pagenr < (ISA_END_ADDRESS >> PAGE_SHIFT)) ++ return 1; ++#ifdef CONFIG_GRKERNSEC_KMEM ++ /* throw out everything else below 1MB */ + if (pagenr <= 256) +- return 1; ++ return 0; ++#endif + if (iomem_is_exclusive(pagenr << PAGE_SHIFT)) + return 0; + if (!page_is_ram(pagenr)) +@@ -371,8 +400,116 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end) + #endif + } + ++#ifdef CONFIG_GRKERNSEC_KMEM ++static inline void gr_init_ebda(void) ++{ ++ unsigned int ebda_addr; ++ unsigned int ebda_size = 0; ++ ++ ebda_addr = get_bios_ebda(); ++ if (ebda_addr) { ++ ebda_size = *(unsigned char *)phys_to_virt(ebda_addr); ++ ebda_size <<= 10; ++ } ++ if (ebda_addr && ebda_size) { ++ ebda_start = ebda_addr >> PAGE_SHIFT; ++ ebda_end = min((unsigned int)PAGE_ALIGN(ebda_addr + ebda_size), (unsigned int)0xa0000) >> PAGE_SHIFT; ++ } else { ++ ebda_start = 0x9f000 >> PAGE_SHIFT; ++ ebda_end = 0xa0000 >> PAGE_SHIFT; ++ } ++} ++#else ++static inline void gr_init_ebda(void) { } ++#endif ++ + void free_initmem(void) + { ++#ifdef CONFIG_PAX_KERNEXEC ++#ifdef CONFIG_X86_32 ++ /* PaX: limit KERNEL_CS to actual size */ ++ unsigned long addr, limit; ++ struct desc_struct d; ++ int cpu; ++#else ++ pgd_t *pgd; ++ pud_t *pud; ++ pmd_t *pmd; ++ unsigned long addr, end; ++#endif ++#endif ++ ++ gr_init_ebda(); ++ ++#ifdef CONFIG_PAX_KERNEXEC ++#ifdef CONFIG_X86_32 ++ limit = paravirt_enabled() ? ktva_ktla(0xffffffff) : (unsigned long)&_etext; ++ limit = (limit - 1UL) >> PAGE_SHIFT; ++ ++ memset(__LOAD_PHYSICAL_ADDR + PAGE_OFFSET, POISON_FREE_INITMEM, PAGE_SIZE); ++ for (cpu = 0; cpu < nr_cpu_ids; cpu++) { ++ pack_descriptor(&d, get_desc_base(&get_cpu_gdt_table(cpu)[GDT_ENTRY_KERNEL_CS]), limit, 0x9B, 0xC); ++ write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_KERNEL_CS, &d, DESCTYPE_S); ++ } ++ ++ /* PaX: make KERNEL_CS read-only */ ++ addr = PFN_ALIGN(ktla_ktva((unsigned long)&_text)); ++ if (!paravirt_enabled()) ++ set_memory_ro(addr, (PFN_ALIGN(_sdata) - addr) >> PAGE_SHIFT); ++/* ++ for (addr = ktla_ktva((unsigned long)&_text); addr < (unsigned long)&_sdata; addr += PMD_SIZE) { ++ pgd = pgd_offset_k(addr); ++ pud = pud_offset(pgd, addr); ++ pmd = pmd_offset(pud, addr); ++ set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW)); ++ } ++*/ ++#ifdef CONFIG_X86_PAE ++ set_memory_nx(PFN_ALIGN(__init_begin), (PFN_ALIGN(__init_end) - PFN_ALIGN(__init_begin)) >> PAGE_SHIFT); ++/* ++ for (addr = (unsigned long)&__init_begin; addr < (unsigned long)&__init_end; addr += PMD_SIZE) { ++ pgd = pgd_offset_k(addr); ++ pud = pud_offset(pgd, addr); ++ pmd = pmd_offset(pud, addr); ++ set_pmd(pmd, __pmd(pmd_val(*pmd) | (_PAGE_NX & __supported_pte_mask))); ++ } ++*/ ++#endif ++ ++#ifdef CONFIG_MODULES ++ set_memory_4k((unsigned long)MODULES_EXEC_VADDR, (MODULES_EXEC_END - MODULES_EXEC_VADDR) >> PAGE_SHIFT); ++#endif ++ ++#else ++ /* PaX: make kernel code/rodata read-only, rest non-executable */ ++ for (addr = __START_KERNEL_map; addr < __START_KERNEL_map + KERNEL_IMAGE_SIZE; addr += PMD_SIZE) { ++ pgd = pgd_offset_k(addr); ++ pud = pud_offset(pgd, addr); ++ pmd = pmd_offset(pud, addr); ++ if (!pmd_present(*pmd)) ++ continue; ++ if ((unsigned long)_text <= addr && addr < (unsigned long)_sdata) ++ set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW)); ++ else ++ set_pmd(pmd, __pmd(pmd_val(*pmd) | (_PAGE_NX & __supported_pte_mask))); ++ } ++ ++ addr = (unsigned long)__va(__pa(__START_KERNEL_map)); ++ end = addr + KERNEL_IMAGE_SIZE; ++ for (; addr < end; addr += PMD_SIZE) { ++ pgd = pgd_offset_k(addr); ++ pud = pud_offset(pgd, addr); ++ pmd = pmd_offset(pud, addr); ++ if (!pmd_present(*pmd)) ++ continue; ++ if ((unsigned long)__va(__pa(_text)) <= addr && addr < (unsigned long)__va(__pa(_sdata))) ++ set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW)); ++ } ++#endif ++ ++ flush_tlb_all(); ++#endif ++ + free_init_pages("unused kernel memory", + (unsigned long)(&__init_begin), + (unsigned long)(&__init_end)); +diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c +index 575d86f..4987469 100644 +--- a/arch/x86/mm/init_32.c ++++ b/arch/x86/mm/init_32.c +@@ -73,36 +73,6 @@ static __init void *alloc_low_page(void) + } + + /* +- * Creates a middle page table and puts a pointer to it in the +- * given global directory entry. This only returns the gd entry +- * in non-PAE compilation mode, since the middle layer is folded. +- */ +-static pmd_t * __init one_md_table_init(pgd_t *pgd) +-{ +- pud_t *pud; +- pmd_t *pmd_table; +- +-#ifdef CONFIG_X86_PAE +- if (!(pgd_val(*pgd) & _PAGE_PRESENT)) { +- if (after_bootmem) +- pmd_table = (pmd_t *)alloc_bootmem_pages(PAGE_SIZE); +- else +- pmd_table = (pmd_t *)alloc_low_page(); +- paravirt_alloc_pmd(&init_mm, __pa(pmd_table) >> PAGE_SHIFT); +- set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT)); +- pud = pud_offset(pgd, 0); +- BUG_ON(pmd_table != pmd_offset(pud, 0)); +- +- return pmd_table; +- } +-#endif +- pud = pud_offset(pgd, 0); +- pmd_table = pmd_offset(pud, 0); +- +- return pmd_table; +-} +- +-/* + * Create a page table and place a pointer to it in a middle page + * directory entry: + */ +@@ -122,13 +92,28 @@ static pte_t * __init one_page_table_init(pmd_t *pmd) + page_table = (pte_t *)alloc_low_page(); + + paravirt_alloc_pte(&init_mm, __pa(page_table) >> PAGE_SHIFT); ++#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) ++ set_pmd(pmd, __pmd(__pa(page_table) | _KERNPG_TABLE)); ++#else + set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE)); ++#endif + BUG_ON(page_table != pte_offset_kernel(pmd, 0)); + } + + return pte_offset_kernel(pmd, 0); + } + ++static pmd_t * __init one_md_table_init(pgd_t *pgd) ++{ ++ pud_t *pud; ++ pmd_t *pmd_table; ++ ++ pud = pud_offset(pgd, 0); ++ pmd_table = pmd_offset(pud, 0); ++ ++ return pmd_table; ++} ++ + pmd_t * __init populate_extra_pmd(unsigned long vaddr) + { + int pgd_idx = pgd_index(vaddr); +@@ -202,6 +187,7 @@ page_table_range_init(unsigned long start, unsigned long end, pgd_t *pgd_base) + int pgd_idx, pmd_idx; + unsigned long vaddr; + pgd_t *pgd; ++ pud_t *pud; + pmd_t *pmd; + pte_t *pte = NULL; + +@@ -211,8 +197,13 @@ page_table_range_init(unsigned long start, unsigned long end, pgd_t *pgd_base) + pgd = pgd_base + pgd_idx; + + for ( ; (pgd_idx < PTRS_PER_PGD) && (vaddr != end); pgd++, pgd_idx++) { +- pmd = one_md_table_init(pgd); +- pmd = pmd + pmd_index(vaddr); ++ pud = pud_offset(pgd, vaddr); ++ pmd = pmd_offset(pud, vaddr); ++ ++#ifdef CONFIG_X86_PAE ++ paravirt_alloc_pmd(&init_mm, __pa(pmd) >> PAGE_SHIFT); ++#endif ++ + for (; (pmd_idx < PTRS_PER_PMD) && (vaddr != end); + pmd++, pmd_idx++) { + pte = page_table_kmap_check(one_page_table_init(pmd), +@@ -224,11 +215,20 @@ page_table_range_init(unsigned long start, unsigned long end, pgd_t *pgd_base) + } + } + +-static inline int is_kernel_text(unsigned long addr) ++static inline int is_kernel_text(unsigned long start, unsigned long end) + { +- if (addr >= (unsigned long)_text && addr <= (unsigned long)__init_end) +- return 1; +- return 0; ++ if ((start > ktla_ktva((unsigned long)_etext) || ++ end <= ktla_ktva((unsigned long)_stext)) && ++ (start > ktla_ktva((unsigned long)_einittext) || ++ end <= ktla_ktva((unsigned long)_sinittext)) && ++ ++#ifdef CONFIG_ACPI_SLEEP ++ (start > (unsigned long)__va(acpi_wakeup_address) + 0x4000 || end <= (unsigned long)__va(acpi_wakeup_address)) && ++#endif ++ ++ (start > (unsigned long)__va(0xfffff) || end <= (unsigned long)__va(0xc0000))) ++ return 0; ++ return 1; + } + + /* +@@ -245,9 +245,10 @@ kernel_physical_mapping_init(unsigned long start, + unsigned long last_map_addr = end; + unsigned long start_pfn, end_pfn; + pgd_t *pgd_base = swapper_pg_dir; +- int pgd_idx, pmd_idx, pte_ofs; ++ unsigned int pgd_idx, pmd_idx, pte_ofs; + unsigned long pfn; + pgd_t *pgd; ++ pud_t *pud; + pmd_t *pmd; + pte_t *pte; + unsigned pages_2m, pages_4k; +@@ -280,8 +281,13 @@ repeat: + pfn = start_pfn; + pgd_idx = pgd_index((pfn<<PAGE_SHIFT) + PAGE_OFFSET); + pgd = pgd_base + pgd_idx; +- for (; pgd_idx < PTRS_PER_PGD; pgd++, pgd_idx++) { +- pmd = one_md_table_init(pgd); ++ for (; pgd_idx < PTRS_PER_PGD && pfn < max_low_pfn; pgd++, pgd_idx++) { ++ pud = pud_offset(pgd, 0); ++ pmd = pmd_offset(pud, 0); ++ ++#ifdef CONFIG_X86_PAE ++ paravirt_alloc_pmd(&init_mm, __pa(pmd) >> PAGE_SHIFT); ++#endif + + if (pfn >= end_pfn) + continue; +@@ -293,14 +299,13 @@ repeat: + #endif + for (; pmd_idx < PTRS_PER_PMD && pfn < end_pfn; + pmd++, pmd_idx++) { +- unsigned int addr = pfn * PAGE_SIZE + PAGE_OFFSET; ++ unsigned long address = pfn * PAGE_SIZE + PAGE_OFFSET; + + /* + * Map with big pages if possible, otherwise + * create normal page tables: + */ + if (use_pse) { +- unsigned int addr2; + pgprot_t prot = PAGE_KERNEL_LARGE; + /* + * first pass will use the same initial +@@ -310,11 +315,7 @@ repeat: + __pgprot(PTE_IDENT_ATTR | + _PAGE_PSE); + +- addr2 = (pfn + PTRS_PER_PTE-1) * PAGE_SIZE + +- PAGE_OFFSET + PAGE_SIZE-1; +- +- if (is_kernel_text(addr) || +- is_kernel_text(addr2)) ++ if (is_kernel_text(address, address + PMD_SIZE)) + prot = PAGE_KERNEL_LARGE_EXEC; + + pages_2m++; +@@ -331,7 +332,7 @@ repeat: + pte_ofs = pte_index((pfn<<PAGE_SHIFT) + PAGE_OFFSET); + pte += pte_ofs; + for (; pte_ofs < PTRS_PER_PTE && pfn < end_pfn; +- pte++, pfn++, pte_ofs++, addr += PAGE_SIZE) { ++ pte++, pfn++, pte_ofs++, address += PAGE_SIZE) { + pgprot_t prot = PAGE_KERNEL; + /* + * first pass will use the same initial +@@ -339,7 +340,7 @@ repeat: + */ + pgprot_t init_prot = __pgprot(PTE_IDENT_ATTR); + +- if (is_kernel_text(addr)) ++ if (is_kernel_text(address, address + PAGE_SIZE)) + prot = PAGE_KERNEL_EXEC; + + pages_4k++; +@@ -465,7 +466,7 @@ void __init native_pagetable_setup_start(pgd_t *base) + + pud = pud_offset(pgd, va); + pmd = pmd_offset(pud, va); +- if (!pmd_present(*pmd)) ++ if (!pmd_present(*pmd) || pmd_huge(*pmd)) + break; + + pte = pte_offset_kernel(pmd, va); +@@ -517,12 +518,10 @@ void __init early_ioremap_page_table_range_init(void) + + static void __init pagetable_init(void) + { +- pgd_t *pgd_base = swapper_pg_dir; +- +- permanent_kmaps_init(pgd_base); ++ permanent_kmaps_init(swapper_pg_dir); + } + +-pteval_t __supported_pte_mask __read_mostly = ~(_PAGE_NX | _PAGE_GLOBAL | _PAGE_IOMAP); ++pteval_t __supported_pte_mask __read_only = ~(_PAGE_NX | _PAGE_GLOBAL | _PAGE_IOMAP); + EXPORT_SYMBOL_GPL(__supported_pte_mask); + + /* user-defined highmem size */ +@@ -734,6 +733,12 @@ void __init mem_init(void) + + pci_iommu_alloc(); + ++#ifdef CONFIG_PAX_PER_CPU_PGD ++ clone_pgd_range(get_cpu_pgd(0) + KERNEL_PGD_BOUNDARY, ++ swapper_pg_dir + KERNEL_PGD_BOUNDARY, ++ KERNEL_PGD_PTRS); ++#endif ++ + #ifdef CONFIG_FLATMEM + BUG_ON(!mem_map); + #endif +@@ -760,7 +765,7 @@ void __init mem_init(void) + reservedpages++; + + codesize = (unsigned long) &_etext - (unsigned long) &_text; +- datasize = (unsigned long) &_edata - (unsigned long) &_etext; ++ datasize = (unsigned long) &_edata - (unsigned long) &_sdata; + initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin; + + printk(KERN_INFO "Memory: %luk/%luk available (%dk kernel code, " +@@ -801,10 +806,10 @@ void __init mem_init(void) + ((unsigned long)&__init_end - + (unsigned long)&__init_begin) >> 10, + +- (unsigned long)&_etext, (unsigned long)&_edata, +- ((unsigned long)&_edata - (unsigned long)&_etext) >> 10, ++ (unsigned long)&_sdata, (unsigned long)&_edata, ++ ((unsigned long)&_edata - (unsigned long)&_sdata) >> 10, + +- (unsigned long)&_text, (unsigned long)&_etext, ++ ktla_ktva((unsigned long)&_text), ktla_ktva((unsigned long)&_etext), + ((unsigned long)&_etext - (unsigned long)&_text) >> 10); + + /* +@@ -882,6 +887,7 @@ void set_kernel_text_rw(void) + if (!kernel_set_to_readonly) + return; + ++ start = ktla_ktva(start); + pr_debug("Set kernel text: %lx - %lx for read write\n", + start, start+size); + +@@ -896,6 +902,7 @@ void set_kernel_text_ro(void) + if (!kernel_set_to_readonly) + return; + ++ start = ktla_ktva(start); + pr_debug("Set kernel text: %lx - %lx for read only\n", + start, start+size); + +@@ -924,6 +931,7 @@ void mark_rodata_ro(void) + unsigned long start = PFN_ALIGN(_text); + unsigned long size = PFN_ALIGN(_etext) - start; + ++ start = ktla_ktva(start); + set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT); + printk(KERN_INFO "Write protecting the kernel text: %luk\n", + size >> 10); +diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c +index fc18be0..e539653 100644 +--- a/arch/x86/mm/init_64.c ++++ b/arch/x86/mm/init_64.c +@@ -74,7 +74,7 @@ early_param("gbpages", parse_direct_gbpages_on); + * around without checking the pgd every time. + */ + +-pteval_t __supported_pte_mask __read_mostly = ~_PAGE_IOMAP; ++pteval_t __supported_pte_mask __read_only = ~(_PAGE_NX | _PAGE_IOMAP); + EXPORT_SYMBOL_GPL(__supported_pte_mask); + + int force_personality32; +@@ -107,12 +107,22 @@ void sync_global_pgds(unsigned long start, unsigned long end) + + for (address = start; address <= end; address += PGDIR_SIZE) { + const pgd_t *pgd_ref = pgd_offset_k(address); ++ ++#ifdef CONFIG_PAX_PER_CPU_PGD ++ unsigned long cpu; ++#else + struct page *page; ++#endif + + if (pgd_none(*pgd_ref)) + continue; + + spin_lock(&pgd_lock); ++ ++#ifdef CONFIG_PAX_PER_CPU_PGD ++ for (cpu = 0; cpu < nr_cpu_ids; ++cpu) { ++ pgd_t *pgd = pgd_offset_cpu(cpu, address); ++#else + list_for_each_entry(page, &pgd_list, lru) { + pgd_t *pgd; + spinlock_t *pgt_lock; +@@ -121,6 +131,7 @@ void sync_global_pgds(unsigned long start, unsigned long end) + /* the pgt_lock only for Xen */ + pgt_lock = &pgd_page_get_mm(page)->page_table_lock; + spin_lock(pgt_lock); ++#endif + + if (pgd_none(*pgd)) + set_pgd(pgd, *pgd_ref); +@@ -128,7 +139,10 @@ void sync_global_pgds(unsigned long start, unsigned long end) + BUG_ON(pgd_page_vaddr(*pgd) + != pgd_page_vaddr(*pgd_ref)); + ++#ifndef CONFIG_PAX_PER_CPU_PGD + spin_unlock(pgt_lock); ++#endif ++ + } + spin_unlock(&pgd_lock); + } +@@ -161,7 +175,7 @@ static pud_t *fill_pud(pgd_t *pgd, unsigned long vaddr) + { + if (pgd_none(*pgd)) { + pud_t *pud = (pud_t *)spp_getpage(); +- pgd_populate(&init_mm, pgd, pud); ++ pgd_populate_kernel(&init_mm, pgd, pud); + if (pud != pud_offset(pgd, 0)) + printk(KERN_ERR "PAGETABLE BUG #00! %p <-> %p\n", + pud, pud_offset(pgd, 0)); +@@ -173,7 +187,7 @@ static pmd_t *fill_pmd(pud_t *pud, unsigned long vaddr) + { + if (pud_none(*pud)) { + pmd_t *pmd = (pmd_t *) spp_getpage(); +- pud_populate(&init_mm, pud, pmd); ++ pud_populate_kernel(&init_mm, pud, pmd); + if (pmd != pmd_offset(pud, 0)) + printk(KERN_ERR "PAGETABLE BUG #01! %p <-> %p\n", + pmd, pmd_offset(pud, 0)); +@@ -202,7 +216,9 @@ void set_pte_vaddr_pud(pud_t *pud_page, unsigned long vaddr, pte_t new_pte) + pmd = fill_pmd(pud, vaddr); + pte = fill_pte(pmd, vaddr); + ++ pax_open_kernel(); + set_pte(pte, new_pte); ++ pax_close_kernel(); + + /* + * It's enough to flush this one mapping. +@@ -261,14 +277,12 @@ static void __init __init_extra_mapping(unsigned long phys, unsigned long size, + pgd = pgd_offset_k((unsigned long)__va(phys)); + if (pgd_none(*pgd)) { + pud = (pud_t *) spp_getpage(); +- set_pgd(pgd, __pgd(__pa(pud) | _KERNPG_TABLE | +- _PAGE_USER)); ++ set_pgd(pgd, __pgd(__pa(pud) | _PAGE_TABLE)); + } + pud = pud_offset(pgd, (unsigned long)__va(phys)); + if (pud_none(*pud)) { + pmd = (pmd_t *) spp_getpage(); +- set_pud(pud, __pud(__pa(pmd) | _KERNPG_TABLE | +- _PAGE_USER)); ++ set_pud(pud, __pud(__pa(pmd) | _PAGE_TABLE)); + } + pmd = pmd_offset(pud, phys); + BUG_ON(!pmd_none(*pmd)); +@@ -329,7 +343,7 @@ static __ref void *alloc_low_page(unsigned long *phys) + if (pfn >= pgt_buf_top) + panic("alloc_low_page: ran out of memory"); + +- adr = early_memremap(pfn * PAGE_SIZE, PAGE_SIZE); ++ adr = (void __force_kernel *)early_memremap(pfn * PAGE_SIZE, PAGE_SIZE); + clear_page(adr); + *phys = pfn * PAGE_SIZE; + return adr; +@@ -345,7 +359,7 @@ static __ref void *map_low_page(void *virt) + + phys = __pa(virt); + left = phys & (PAGE_SIZE - 1); +- adr = early_memremap(phys & PAGE_MASK, PAGE_SIZE); ++ adr = (void __force_kernel *)early_memremap(phys & PAGE_MASK, PAGE_SIZE); + adr = (void *)(((unsigned long)adr) | left); + + return adr; +@@ -545,7 +559,7 @@ phys_pud_init(pud_t *pud_page, unsigned long addr, unsigned long end, + unmap_low_page(pmd); + + spin_lock(&init_mm.page_table_lock); +- pud_populate(&init_mm, pud, __va(pmd_phys)); ++ pud_populate_kernel(&init_mm, pud, __va(pmd_phys)); + spin_unlock(&init_mm.page_table_lock); + } + __flush_tlb_all(); +@@ -591,7 +605,7 @@ kernel_physical_mapping_init(unsigned long start, + unmap_low_page(pud); + + spin_lock(&init_mm.page_table_lock); +- pgd_populate(&init_mm, pgd, __va(pud_phys)); ++ pgd_populate_kernel(&init_mm, pgd, __va(pud_phys)); + spin_unlock(&init_mm.page_table_lock); + pgd_changed = true; + } +@@ -683,6 +697,12 @@ void __init mem_init(void) + + pci_iommu_alloc(); + ++#ifdef CONFIG_PAX_PER_CPU_PGD ++ clone_pgd_range(get_cpu_pgd(0) + KERNEL_PGD_BOUNDARY, ++ swapper_pg_dir + KERNEL_PGD_BOUNDARY, ++ KERNEL_PGD_PTRS); ++#endif ++ + /* clear_bss() already clear the empty_zero_page */ + + reservedpages = 0; +@@ -843,8 +863,8 @@ int kern_addr_valid(unsigned long addr) + static struct vm_area_struct gate_vma = { + .vm_start = VSYSCALL_START, + .vm_end = VSYSCALL_START + (VSYSCALL_MAPPED_PAGES * PAGE_SIZE), +- .vm_page_prot = PAGE_READONLY_EXEC, +- .vm_flags = VM_READ | VM_EXEC ++ .vm_page_prot = PAGE_READONLY, ++ .vm_flags = VM_READ + }; + + struct vm_area_struct *get_gate_vma(struct mm_struct *mm) +@@ -878,7 +898,7 @@ int in_gate_area_no_mm(unsigned long addr) + + const char *arch_vma_name(struct vm_area_struct *vma) + { +- if (vma->vm_mm && vma->vm_start == (long)vma->vm_mm->context.vdso) ++ if (vma->vm_mm && vma->vm_start == vma->vm_mm->context.vdso) + return "[vdso]"; + if (vma == &gate_vma) + return "[vsyscall]"; +diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c +index 7b179b4..6bd1777 100644 +--- a/arch/x86/mm/iomap_32.c ++++ b/arch/x86/mm/iomap_32.c +@@ -64,7 +64,11 @@ void *kmap_atomic_prot_pfn(unsigned long pfn, pgprot_t prot) + type = kmap_atomic_idx_push(); + idx = type + KM_TYPE_NR * smp_processor_id(); + vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); ++ ++ pax_open_kernel(); + set_pte(kmap_pte - idx, pfn_pte(pfn, prot)); ++ pax_close_kernel(); ++ + arch_flush_lazy_mmu_mode(); + + return (void *)vaddr; +diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c +index be1ef57..55f0160 100644 +--- a/arch/x86/mm/ioremap.c ++++ b/arch/x86/mm/ioremap.c +@@ -97,7 +97,7 @@ static void __iomem *__ioremap_caller(resource_size_t phys_addr, + for (pfn = phys_addr >> PAGE_SHIFT; pfn <= last_pfn; pfn++) { + int is_ram = page_is_ram(pfn); + +- if (is_ram && pfn_valid(pfn) && !PageReserved(pfn_to_page(pfn))) ++ if (is_ram && pfn_valid(pfn) && (pfn >= 0x100 || !PageReserved(pfn_to_page(pfn)))) + return NULL; + WARN_ON_ONCE(is_ram); + } +@@ -315,6 +315,9 @@ void *xlate_dev_mem_ptr(unsigned long phys) + + /* If page is RAM, we can use __va. Otherwise ioremap and unmap. */ + if (page_is_ram(start >> PAGE_SHIFT)) ++#ifdef CONFIG_HIGHMEM ++ if ((start >> PAGE_SHIFT) < max_low_pfn) ++#endif + return __va(phys); + + addr = (void __force *)ioremap_cache(start, PAGE_SIZE); +@@ -344,7 +347,7 @@ static int __init early_ioremap_debug_setup(char *str) + early_param("early_ioremap_debug", early_ioremap_debug_setup); + + static __initdata int after_paging_init; +-static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)] __page_aligned_bss; ++static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)] __read_only __aligned(PAGE_SIZE); + + static inline pmd_t * __init early_ioremap_pmd(unsigned long addr) + { +@@ -381,8 +384,7 @@ void __init early_ioremap_init(void) + slot_virt[i] = __fix_to_virt(FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*i); + + pmd = early_ioremap_pmd(fix_to_virt(FIX_BTMAP_BEGIN)); +- memset(bm_pte, 0, sizeof(bm_pte)); +- pmd_populate_kernel(&init_mm, pmd, bm_pte); ++ pmd_populate_user(&init_mm, pmd, bm_pte); + + /* + * The boot-ioremap range spans multiple pmds, for which +diff --git a/arch/x86/mm/kmemcheck/kmemcheck.c b/arch/x86/mm/kmemcheck/kmemcheck.c +index d87dd6d..bf3fa66 100644 +--- a/arch/x86/mm/kmemcheck/kmemcheck.c ++++ b/arch/x86/mm/kmemcheck/kmemcheck.c +@@ -622,9 +622,9 @@ bool kmemcheck_fault(struct pt_regs *regs, unsigned long address, + * memory (e.g. tracked pages)? For now, we need this to avoid + * invoking kmemcheck for PnP BIOS calls. + */ +- if (regs->flags & X86_VM_MASK) ++ if (v8086_mode(regs)) + return false; +- if (regs->cs != __KERNEL_CS) ++ if (regs->cs != __KERNEL_CS && regs->cs != __KERNEXEC_KERNEL_CS) + return false; + + pte = kmemcheck_pte_lookup(address); +diff --git a/arch/x86/mm/mmap.c b/arch/x86/mm/mmap.c +index 845df68..1d8d29f 100644 +--- a/arch/x86/mm/mmap.c ++++ b/arch/x86/mm/mmap.c +@@ -52,7 +52,7 @@ static unsigned int stack_maxrandom_size(void) + * Leave an at least ~128 MB hole with possible stack randomization. + */ + #define MIN_GAP (128*1024*1024UL + stack_maxrandom_size()) +-#define MAX_GAP (TASK_SIZE/6*5) ++#define MAX_GAP (pax_task_size/6*5) + + static int mmap_is_legacy(void) + { +@@ -82,27 +82,40 @@ static unsigned long mmap_rnd(void) + return rnd << PAGE_SHIFT; + } + +-static unsigned long mmap_base(void) ++static unsigned long mmap_base(struct mm_struct *mm) + { + unsigned long gap = rlimit(RLIMIT_STACK); ++ unsigned long pax_task_size = TASK_SIZE; ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (mm->pax_flags & MF_PAX_SEGMEXEC) ++ pax_task_size = SEGMEXEC_TASK_SIZE; ++#endif + + if (gap < MIN_GAP) + gap = MIN_GAP; + else if (gap > MAX_GAP) + gap = MAX_GAP; + +- return PAGE_ALIGN(TASK_SIZE - gap - mmap_rnd()); ++ return PAGE_ALIGN(pax_task_size - gap - mmap_rnd()); + } + + /* + * Bottom-up (legacy) layout on X86_32 did not support randomization, X86_64 + * does, but not when emulating X86_32 + */ +-static unsigned long mmap_legacy_base(void) ++static unsigned long mmap_legacy_base(struct mm_struct *mm) + { +- if (mmap_is_ia32()) ++ if (mmap_is_ia32()) { ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (mm->pax_flags & MF_PAX_SEGMEXEC) ++ return SEGMEXEC_TASK_UNMAPPED_BASE; ++ else ++#endif ++ + return TASK_UNMAPPED_BASE; +- else ++ } else + return TASK_UNMAPPED_BASE + mmap_rnd(); + } + +@@ -113,11 +126,23 @@ static unsigned long mmap_legacy_base(void) + void arch_pick_mmap_layout(struct mm_struct *mm) + { + if (mmap_is_legacy()) { +- mm->mmap_base = mmap_legacy_base(); ++ mm->mmap_base = mmap_legacy_base(mm); ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base += mm->delta_mmap; ++#endif ++ + mm->get_unmapped_area = arch_get_unmapped_area; + mm->unmap_area = arch_unmap_area; + } else { +- mm->mmap_base = mmap_base(); ++ mm->mmap_base = mmap_base(mm); ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base -= mm->delta_mmap + mm->delta_stack; ++#endif ++ + mm->get_unmapped_area = arch_get_unmapped_area_topdown; + mm->unmap_area = arch_unmap_area_topdown; + } +diff --git a/arch/x86/mm/mmio-mod.c b/arch/x86/mm/mmio-mod.c +index dc0b727..dc9d71a 100644 +--- a/arch/x86/mm/mmio-mod.c ++++ b/arch/x86/mm/mmio-mod.c +@@ -194,7 +194,7 @@ static void pre(struct kmmio_probe *p, struct pt_regs *regs, + break; + default: + { +- unsigned char *ip = (unsigned char *)instptr; ++ unsigned char *ip = (unsigned char *)ktla_ktva(instptr); + my_trace->opcode = MMIO_UNKNOWN_OP; + my_trace->width = 0; + my_trace->value = (*ip) << 16 | *(ip + 1) << 8 | +@@ -234,7 +234,7 @@ static void post(struct kmmio_probe *p, unsigned long condition, + static void ioremap_trace_core(resource_size_t offset, unsigned long size, + void __iomem *addr) + { +- static atomic_t next_id; ++ static atomic_unchecked_t next_id; + struct remap_trace *trace = kmalloc(sizeof(*trace), GFP_KERNEL); + /* These are page-unaligned. */ + struct mmiotrace_map map = { +@@ -258,7 +258,7 @@ static void ioremap_trace_core(resource_size_t offset, unsigned long size, + .private = trace + }, + .phys = offset, +- .id = atomic_inc_return(&next_id) ++ .id = atomic_inc_return_unchecked(&next_id) + }; + map.map_id = trace->id; + +diff --git a/arch/x86/mm/pageattr-test.c b/arch/x86/mm/pageattr-test.c +index b008656..773eac2 100644 +--- a/arch/x86/mm/pageattr-test.c ++++ b/arch/x86/mm/pageattr-test.c +@@ -36,7 +36,7 @@ enum { + + static int pte_testbit(pte_t pte) + { +- return pte_flags(pte) & _PAGE_UNUSED1; ++ return pte_flags(pte) & _PAGE_CPA_TEST; + } + + struct split_state { +diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c +index e1ebde3..b1e1db38 100644 +--- a/arch/x86/mm/pageattr.c ++++ b/arch/x86/mm/pageattr.c +@@ -261,7 +261,7 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address, + */ + #ifdef CONFIG_PCI_BIOS + if (pcibios_enabled && within(pfn, BIOS_BEGIN >> PAGE_SHIFT, BIOS_END >> PAGE_SHIFT)) +- pgprot_val(forbidden) |= _PAGE_NX; ++ pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask; + #endif + + /* +@@ -269,9 +269,10 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address, + * Does not cover __inittext since that is gone later on. On + * 64bit we do not enforce !NX on the low mapping + */ +- if (within(address, (unsigned long)_text, (unsigned long)_etext)) +- pgprot_val(forbidden) |= _PAGE_NX; ++ if (within(address, ktla_ktva((unsigned long)_text), ktla_ktva((unsigned long)_etext))) ++ pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask; + ++#ifdef CONFIG_DEBUG_RODATA + /* + * The .rodata section needs to be read-only. Using the pfn + * catches all aliases. +@@ -279,6 +280,7 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address, + if (within(pfn, __pa((unsigned long)__start_rodata) >> PAGE_SHIFT, + __pa((unsigned long)__end_rodata) >> PAGE_SHIFT)) + pgprot_val(forbidden) |= _PAGE_RW; ++#endif + + #if defined(CONFIG_X86_64) && defined(CONFIG_DEBUG_RODATA) + /* +@@ -317,6 +319,13 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address, + } + #endif + ++#ifdef CONFIG_PAX_KERNEXEC ++ if (within(pfn, __pa((unsigned long)&_text), __pa((unsigned long)&_sdata))) { ++ pgprot_val(forbidden) |= _PAGE_RW; ++ pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask; ++ } ++#endif ++ + prot = __pgprot(pgprot_val(prot) & ~pgprot_val(forbidden)); + + return prot; +@@ -369,23 +378,37 @@ EXPORT_SYMBOL_GPL(lookup_address); + static void __set_pmd_pte(pte_t *kpte, unsigned long address, pte_t pte) + { + /* change init_mm */ ++ pax_open_kernel(); + set_pte_atomic(kpte, pte); ++ + #ifdef CONFIG_X86_32 + if (!SHARED_KERNEL_PMD) { ++ ++#ifdef CONFIG_PAX_PER_CPU_PGD ++ unsigned long cpu; ++#else + struct page *page; ++#endif + ++#ifdef CONFIG_PAX_PER_CPU_PGD ++ for (cpu = 0; cpu < nr_cpu_ids; ++cpu) { ++ pgd_t *pgd = get_cpu_pgd(cpu); ++#else + list_for_each_entry(page, &pgd_list, lru) { +- pgd_t *pgd; ++ pgd_t *pgd = (pgd_t *)page_address(page); ++#endif ++ + pud_t *pud; + pmd_t *pmd; + +- pgd = (pgd_t *)page_address(page) + pgd_index(address); ++ pgd += pgd_index(address); + pud = pud_offset(pgd, address); + pmd = pmd_offset(pud, address); + set_pte_atomic((pte_t *)pmd, pte); + } + } + #endif ++ pax_close_kernel(); + } + + static int +diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c +index f6ff57b..481690f 100644 +--- a/arch/x86/mm/pat.c ++++ b/arch/x86/mm/pat.c +@@ -361,7 +361,7 @@ int free_memtype(u64 start, u64 end) + + if (!entry) { + printk(KERN_INFO "%s:%d freeing invalid memtype %Lx-%Lx\n", +- current->comm, current->pid, start, end); ++ current->comm, task_pid_nr(current), start, end); + return -EINVAL; + } + +@@ -492,8 +492,8 @@ static inline int range_is_allowed(unsigned long pfn, unsigned long size) + while (cursor < to) { + if (!devmem_is_allowed(pfn)) { + printk(KERN_INFO +- "Program %s tried to access /dev/mem between %Lx->%Lx.\n", +- current->comm, from, to); ++ "Program %s tried to access /dev/mem between %Lx->%Lx (%Lx).\n", ++ current->comm, from, to, cursor); + return 0; + } + cursor += PAGE_SIZE; +@@ -557,7 +557,7 @@ int kernel_map_sync_memtype(u64 base, unsigned long size, unsigned long flags) + printk(KERN_INFO + "%s:%d ioremap_change_attr failed %s " + "for %Lx-%Lx\n", +- current->comm, current->pid, ++ current->comm, task_pid_nr(current), + cattr_name(flags), + base, (unsigned long long)(base + size)); + return -EINVAL; +@@ -593,7 +593,7 @@ static int reserve_pfn_range(u64 paddr, unsigned long size, pgprot_t *vma_prot, + if (want_flags != flags) { + printk(KERN_WARNING + "%s:%d map pfn RAM range req %s for %Lx-%Lx, got %s\n", +- current->comm, current->pid, ++ current->comm, task_pid_nr(current), + cattr_name(want_flags), + (unsigned long long)paddr, + (unsigned long long)(paddr + size), +@@ -615,7 +615,7 @@ static int reserve_pfn_range(u64 paddr, unsigned long size, pgprot_t *vma_prot, + free_memtype(paddr, paddr + size); + printk(KERN_ERR "%s:%d map pfn expected mapping type %s" + " for %Lx-%Lx, got %s\n", +- current->comm, current->pid, ++ current->comm, task_pid_nr(current), + cattr_name(want_flags), + (unsigned long long)paddr, + (unsigned long long)(paddr + size), +diff --git a/arch/x86/mm/pf_in.c b/arch/x86/mm/pf_in.c +index 9f0614d..92ae64a 100644 +--- a/arch/x86/mm/pf_in.c ++++ b/arch/x86/mm/pf_in.c +@@ -148,7 +148,7 @@ enum reason_type get_ins_type(unsigned long ins_addr) + int i; + enum reason_type rv = OTHERS; + +- p = (unsigned char *)ins_addr; ++ p = (unsigned char *)ktla_ktva(ins_addr); + p += skip_prefix(p, &prf); + p += get_opcode(p, &opcode); + +@@ -168,7 +168,7 @@ static unsigned int get_ins_reg_width(unsigned long ins_addr) + struct prefix_bits prf; + int i; + +- p = (unsigned char *)ins_addr; ++ p = (unsigned char *)ktla_ktva(ins_addr); + p += skip_prefix(p, &prf); + p += get_opcode(p, &opcode); + +@@ -191,7 +191,7 @@ unsigned int get_ins_mem_width(unsigned long ins_addr) + struct prefix_bits prf; + int i; + +- p = (unsigned char *)ins_addr; ++ p = (unsigned char *)ktla_ktva(ins_addr); + p += skip_prefix(p, &prf); + p += get_opcode(p, &opcode); + +@@ -415,7 +415,7 @@ unsigned long get_ins_reg_val(unsigned long ins_addr, struct pt_regs *regs) + struct prefix_bits prf; + int i; + +- p = (unsigned char *)ins_addr; ++ p = (unsigned char *)ktla_ktva(ins_addr); + p += skip_prefix(p, &prf); + p += get_opcode(p, &opcode); + for (i = 0; i < ARRAY_SIZE(reg_rop); i++) +@@ -470,7 +470,7 @@ unsigned long get_ins_imm_val(unsigned long ins_addr) + struct prefix_bits prf; + int i; + +- p = (unsigned char *)ins_addr; ++ p = (unsigned char *)ktla_ktva(ins_addr); + p += skip_prefix(p, &prf); + p += get_opcode(p, &opcode); + for (i = 0; i < ARRAY_SIZE(imm_wop); i++) +diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c +index 8573b83..4f3ed7e 100644 +--- a/arch/x86/mm/pgtable.c ++++ b/arch/x86/mm/pgtable.c +@@ -84,10 +84,64 @@ static inline void pgd_list_del(pgd_t *pgd) + list_del(&page->lru); + } + +-#define UNSHARED_PTRS_PER_PGD \ +- (SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD) ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++pgdval_t clone_pgd_mask __read_only = ~_PAGE_PRESENT; + ++void __shadow_user_pgds(pgd_t *dst, const pgd_t *src) ++{ ++ unsigned int count = USER_PGD_PTRS; + ++ while (count--) ++ *dst++ = __pgd((pgd_val(*src++) | (_PAGE_NX & __supported_pte_mask)) & ~_PAGE_USER); ++} ++#endif ++ ++#ifdef CONFIG_PAX_PER_CPU_PGD ++void __clone_user_pgds(pgd_t *dst, const pgd_t *src) ++{ ++ unsigned int count = USER_PGD_PTRS; ++ ++ while (count--) { ++ pgd_t pgd; ++ ++#ifdef CONFIG_X86_64 ++ pgd = __pgd(pgd_val(*src++) | _PAGE_USER); ++#else ++ pgd = *src++; ++#endif ++ ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++ pgd = __pgd(pgd_val(pgd) & clone_pgd_mask); ++#endif ++ ++ *dst++ = pgd; ++ } ++ ++} ++#endif ++ ++#ifdef CONFIG_X86_64 ++#define pxd_t pud_t ++#define pyd_t pgd_t ++#define paravirt_release_pxd(pfn) paravirt_release_pud(pfn) ++#define pxd_free(mm, pud) pud_free((mm), (pud)) ++#define pyd_populate(mm, pgd, pud) pgd_populate((mm), (pgd), (pud)) ++#define pyd_offset(mm, address) pgd_offset((mm), (address)) ++#define PYD_SIZE PGDIR_SIZE ++#else ++#define pxd_t pmd_t ++#define pyd_t pud_t ++#define paravirt_release_pxd(pfn) paravirt_release_pmd(pfn) ++#define pxd_free(mm, pud) pmd_free((mm), (pud)) ++#define pyd_populate(mm, pgd, pud) pud_populate((mm), (pgd), (pud)) ++#define pyd_offset(mm, address) pud_offset((mm), (address)) ++#define PYD_SIZE PUD_SIZE ++#endif ++ ++#ifdef CONFIG_PAX_PER_CPU_PGD ++static inline void pgd_ctor(struct mm_struct *mm, pgd_t *pgd) {} ++static inline void pgd_dtor(pgd_t *pgd) {} ++#else + static void pgd_set_mm(pgd_t *pgd, struct mm_struct *mm) + { + BUILD_BUG_ON(sizeof(virt_to_page(pgd)->index) < sizeof(mm)); +@@ -128,6 +182,7 @@ static void pgd_dtor(pgd_t *pgd) + pgd_list_del(pgd); + spin_unlock(&pgd_lock); + } ++#endif + + /* + * List of all pgd's needed for non-PAE so it can invalidate entries +@@ -140,7 +195,7 @@ static void pgd_dtor(pgd_t *pgd) + * -- wli + */ + +-#ifdef CONFIG_X86_PAE ++#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE) + /* + * In PAE mode, we need to do a cr3 reload (=tlb flush) when + * updating the top-level pagetable entries to guarantee the +@@ -152,7 +207,7 @@ static void pgd_dtor(pgd_t *pgd) + * not shared between pagetables (!SHARED_KERNEL_PMDS), we allocate + * and initialize the kernel pmds here. + */ +-#define PREALLOCATED_PMDS UNSHARED_PTRS_PER_PGD ++#define PREALLOCATED_PXDS (SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD) + + void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd) + { +@@ -170,36 +225,38 @@ void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd) + */ + flush_tlb_mm(mm); + } ++#elif defined(CONFIG_X86_64) && defined(CONFIG_PAX_PER_CPU_PGD) ++#define PREALLOCATED_PXDS USER_PGD_PTRS + #else /* !CONFIG_X86_PAE */ + + /* No need to prepopulate any pagetable entries in non-PAE modes. */ +-#define PREALLOCATED_PMDS 0 ++#define PREALLOCATED_PXDS 0 + + #endif /* CONFIG_X86_PAE */ + +-static void free_pmds(pmd_t *pmds[]) ++static void free_pxds(pxd_t *pxds[]) + { + int i; + +- for(i = 0; i < PREALLOCATED_PMDS; i++) +- if (pmds[i]) +- free_page((unsigned long)pmds[i]); ++ for(i = 0; i < PREALLOCATED_PXDS; i++) ++ if (pxds[i]) ++ free_page((unsigned long)pxds[i]); + } + +-static int preallocate_pmds(pmd_t *pmds[]) ++static int preallocate_pxds(pxd_t *pxds[]) + { + int i; + bool failed = false; + +- for(i = 0; i < PREALLOCATED_PMDS; i++) { +- pmd_t *pmd = (pmd_t *)__get_free_page(PGALLOC_GFP); +- if (pmd == NULL) ++ for(i = 0; i < PREALLOCATED_PXDS; i++) { ++ pxd_t *pxd = (pxd_t *)__get_free_page(PGALLOC_GFP); ++ if (pxd == NULL) + failed = true; +- pmds[i] = pmd; ++ pxds[i] = pxd; + } + + if (failed) { +- free_pmds(pmds); ++ free_pxds(pxds); + return -ENOMEM; + } + +@@ -212,51 +269,55 @@ static int preallocate_pmds(pmd_t *pmds[]) + * preallocate which never got a corresponding vma will need to be + * freed manually. + */ +-static void pgd_mop_up_pmds(struct mm_struct *mm, pgd_t *pgdp) ++static void pgd_mop_up_pxds(struct mm_struct *mm, pgd_t *pgdp) + { + int i; + +- for(i = 0; i < PREALLOCATED_PMDS; i++) { ++ for(i = 0; i < PREALLOCATED_PXDS; i++) { + pgd_t pgd = pgdp[i]; + + if (pgd_val(pgd) != 0) { +- pmd_t *pmd = (pmd_t *)pgd_page_vaddr(pgd); ++ pxd_t *pxd = (pxd_t *)pgd_page_vaddr(pgd); + +- pgdp[i] = native_make_pgd(0); ++ set_pgd(pgdp + i, native_make_pgd(0)); + +- paravirt_release_pmd(pgd_val(pgd) >> PAGE_SHIFT); +- pmd_free(mm, pmd); ++ paravirt_release_pxd(pgd_val(pgd) >> PAGE_SHIFT); ++ pxd_free(mm, pxd); + } + } + } + +-static void pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmds[]) ++static void pgd_prepopulate_pxd(struct mm_struct *mm, pgd_t *pgd, pxd_t *pxds[]) + { +- pud_t *pud; ++ pyd_t *pyd; + unsigned long addr; + int i; + +- if (PREALLOCATED_PMDS == 0) /* Work around gcc-3.4.x bug */ ++ if (PREALLOCATED_PXDS == 0) /* Work around gcc-3.4.x bug */ + return; + +- pud = pud_offset(pgd, 0); ++#ifdef CONFIG_X86_64 ++ pyd = pyd_offset(mm, 0L); ++#else ++ pyd = pyd_offset(pgd, 0L); ++#endif + +- for (addr = i = 0; i < PREALLOCATED_PMDS; +- i++, pud++, addr += PUD_SIZE) { +- pmd_t *pmd = pmds[i]; ++ for (addr = i = 0; i < PREALLOCATED_PXDS; ++ i++, pyd++, addr += PYD_SIZE) { ++ pxd_t *pxd = pxds[i]; + + if (i >= KERNEL_PGD_BOUNDARY) +- memcpy(pmd, (pmd_t *)pgd_page_vaddr(swapper_pg_dir[i]), +- sizeof(pmd_t) * PTRS_PER_PMD); ++ memcpy(pxd, (pxd_t *)pgd_page_vaddr(swapper_pg_dir[i]), ++ sizeof(pxd_t) * PTRS_PER_PMD); + +- pud_populate(mm, pud, pmd); ++ pyd_populate(mm, pyd, pxd); + } + } + + pgd_t *pgd_alloc(struct mm_struct *mm) + { + pgd_t *pgd; +- pmd_t *pmds[PREALLOCATED_PMDS]; ++ pxd_t *pxds[PREALLOCATED_PXDS]; + + pgd = (pgd_t *)__get_free_page(PGALLOC_GFP); + +@@ -265,11 +326,11 @@ pgd_t *pgd_alloc(struct mm_struct *mm) + + mm->pgd = pgd; + +- if (preallocate_pmds(pmds) != 0) ++ if (preallocate_pxds(pxds) != 0) + goto out_free_pgd; + + if (paravirt_pgd_alloc(mm) != 0) +- goto out_free_pmds; ++ goto out_free_pxds; + + /* + * Make sure that pre-populating the pmds is atomic with +@@ -279,14 +340,14 @@ pgd_t *pgd_alloc(struct mm_struct *mm) + spin_lock(&pgd_lock); + + pgd_ctor(mm, pgd); +- pgd_prepopulate_pmd(mm, pgd, pmds); ++ pgd_prepopulate_pxd(mm, pgd, pxds); + + spin_unlock(&pgd_lock); + + return pgd; + +-out_free_pmds: +- free_pmds(pmds); ++out_free_pxds: ++ free_pxds(pxds); + out_free_pgd: + free_page((unsigned long)pgd); + out: +@@ -295,7 +356,7 @@ out: + + void pgd_free(struct mm_struct *mm, pgd_t *pgd) + { +- pgd_mop_up_pmds(mm, pgd); ++ pgd_mop_up_pxds(mm, pgd); + pgd_dtor(pgd); + paravirt_pgd_free(mm, pgd); + free_page((unsigned long)pgd); +diff --git a/arch/x86/mm/pgtable_32.c b/arch/x86/mm/pgtable_32.c +index a69bcb8..19068ab 100644 +--- a/arch/x86/mm/pgtable_32.c ++++ b/arch/x86/mm/pgtable_32.c +@@ -47,10 +47,13 @@ void set_pte_vaddr(unsigned long vaddr, pte_t pteval) + return; + } + pte = pte_offset_kernel(pmd, vaddr); ++ ++ pax_open_kernel(); + if (pte_val(pteval)) + set_pte_at(&init_mm, vaddr, pte, pteval); + else + pte_clear(&init_mm, vaddr, pte); ++ pax_close_kernel(); + + /* + * It's enough to flush this one mapping. +diff --git a/arch/x86/mm/setup_nx.c b/arch/x86/mm/setup_nx.c +index 410531d..0f16030 100644 +--- a/arch/x86/mm/setup_nx.c ++++ b/arch/x86/mm/setup_nx.c +@@ -5,8 +5,10 @@ + #include <asm/pgtable.h> + #include <asm/proto.h> + ++#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) + static int disable_nx __cpuinitdata; + ++#ifndef CONFIG_PAX_PAGEEXEC + /* + * noexec = on|off + * +@@ -28,12 +30,17 @@ static int __init noexec_setup(char *str) + return 0; + } + early_param("noexec", noexec_setup); ++#endif ++ ++#endif + + void __cpuinit x86_configure_nx(void) + { ++#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) + if (cpu_has_nx && !disable_nx) + __supported_pte_mask |= _PAGE_NX; + else ++#endif + __supported_pte_mask &= ~_PAGE_NX; + } + +diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c +index d6c0418..06a0ad5 100644 +--- a/arch/x86/mm/tlb.c ++++ b/arch/x86/mm/tlb.c +@@ -65,7 +65,11 @@ void leave_mm(int cpu) + BUG(); + cpumask_clear_cpu(cpu, + mm_cpumask(percpu_read(cpu_tlbstate.active_mm))); ++ ++#ifndef CONFIG_PAX_PER_CPU_PGD + load_cr3(swapper_pg_dir); ++#endif ++ + } + EXPORT_SYMBOL_GPL(leave_mm); + +diff --git a/arch/x86/net/bpf_jit.S b/arch/x86/net/bpf_jit.S +index 877b9a1..a8ecf42 100644 +--- a/arch/x86/net/bpf_jit.S ++++ b/arch/x86/net/bpf_jit.S +@@ -9,6 +9,7 @@ + */ + #include <linux/linkage.h> + #include <asm/dwarf2.h> ++#include <asm/alternative-asm.h> + + /* + * Calling convention : +@@ -35,6 +36,7 @@ sk_load_word_positive_offset: + jle bpf_slow_path_word + mov (SKBDATA,%rsi),%eax + bswap %eax /* ntohl() */ ++ pax_force_retaddr + ret + + sk_load_half: +@@ -52,6 +54,7 @@ sk_load_half_positive_offset: + jle bpf_slow_path_half + movzwl (SKBDATA,%rsi),%eax + rol $8,%ax # ntohs() ++ pax_force_retaddr + ret + + sk_load_byte: +@@ -66,6 +69,7 @@ sk_load_byte_positive_offset: + cmp %esi,%r9d /* if (offset >= hlen) goto bpf_slow_path_byte */ + jle bpf_slow_path_byte + movzbl (SKBDATA,%rsi),%eax ++ pax_force_retaddr + ret + + /** +@@ -87,6 +91,7 @@ sk_load_byte_msh_positive_offset: + movzbl (SKBDATA,%rsi),%ebx + and $15,%bl + shl $2,%bl ++ pax_force_retaddr + ret + + /* rsi contains offset and can be scratched */ +@@ -109,6 +114,7 @@ bpf_slow_path_word: + js bpf_error + mov -12(%rbp),%eax + bswap %eax ++ pax_force_retaddr + ret + + bpf_slow_path_half: +@@ -117,12 +123,14 @@ bpf_slow_path_half: + mov -12(%rbp),%ax + rol $8,%ax + movzwl %ax,%eax ++ pax_force_retaddr + ret + + bpf_slow_path_byte: + bpf_slow_path_common(1) + js bpf_error + movzbl -12(%rbp),%eax ++ pax_force_retaddr + ret + + bpf_slow_path_byte_msh: +@@ -133,6 +141,7 @@ bpf_slow_path_byte_msh: + and $15,%al + shl $2,%al + xchg %eax,%ebx ++ pax_force_retaddr + ret + + #define sk_negative_common(SIZE) \ +@@ -157,6 +166,7 @@ sk_load_word_negative_offset: + sk_negative_common(4) + mov (%rax), %eax + bswap %eax ++ pax_force_retaddr + ret + + bpf_slow_path_half_neg: +@@ -168,6 +178,7 @@ sk_load_half_negative_offset: + mov (%rax),%ax + rol $8,%ax + movzwl %ax,%eax ++ pax_force_retaddr + ret + + bpf_slow_path_byte_neg: +@@ -177,6 +188,7 @@ sk_load_byte_negative_offset: + .globl sk_load_byte_negative_offset + sk_negative_common(1) + movzbl (%rax), %eax ++ pax_force_retaddr + ret + + bpf_slow_path_byte_msh_neg: +@@ -190,6 +202,7 @@ sk_load_byte_msh_negative_offset: + and $15,%al + shl $2,%al + xchg %eax,%ebx ++ pax_force_retaddr + ret + + bpf_error: +@@ -197,4 +210,5 @@ bpf_error: + xor %eax,%eax + mov -8(%rbp),%rbx + leaveq ++ pax_force_retaddr + ret +diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c +index 0597f95..a12c36e 100644 +--- a/arch/x86/net/bpf_jit_comp.c ++++ b/arch/x86/net/bpf_jit_comp.c +@@ -120,6 +120,11 @@ static inline void bpf_flush_icache(void *start, void *end) + set_fs(old_fs); + } + ++struct bpf_jit_work { ++ struct work_struct work; ++ void *image; ++}; ++ + #define CHOOSE_LOAD_FUNC(K, func) \ + ((int)K < 0 ? ((int)K >= SKF_LL_OFF ? func##_negative_offset : func) : func##_positive_offset) + +@@ -146,6 +151,10 @@ void bpf_jit_compile(struct sk_filter *fp) + if (addrs == NULL) + return; + ++ fp->work = kmalloc(sizeof(*fp->work), GFP_KERNEL); ++ if (!fp->work) ++ goto out; ++ + /* Before first pass, make a rough estimation of addrs[] + * each bpf instruction is translated to less than 64 bytes + */ +@@ -589,17 +598,18 @@ cond_branch: f_offset = addrs[i + filter[i].jf] - addrs[i]; + break; + default: + /* hmm, too complex filter, give up with jit compiler */ +- goto out; ++ goto error; + } + ilen = prog - temp; + if (image) { + if (unlikely(proglen + ilen > oldproglen)) { + pr_err("bpb_jit_compile fatal error\n"); +- kfree(addrs); +- module_free(NULL, image); +- return; ++ module_free_exec(NULL, image); ++ goto error; + } ++ pax_open_kernel(); + memcpy(image + proglen, temp, ilen); ++ pax_close_kernel(); + } + proglen += ilen; + addrs[i] = proglen; +@@ -620,11 +630,9 @@ cond_branch: f_offset = addrs[i + filter[i].jf] - addrs[i]; + break; + } + if (proglen == oldproglen) { +- image = module_alloc(max_t(unsigned int, +- proglen, +- sizeof(struct work_struct))); ++ image = module_alloc_exec(proglen); + if (!image) +- goto out; ++ goto error; + } + oldproglen = proglen; + } +@@ -640,7 +648,10 @@ cond_branch: f_offset = addrs[i + filter[i].jf] - addrs[i]; + bpf_flush_icache(image, image + proglen); + + fp->bpf_func = (void *)image; +- } ++ } else ++error: ++ kfree(fp->work); ++ + out: + kfree(addrs); + return; +@@ -648,18 +659,20 @@ out: + + static void jit_free_defer(struct work_struct *arg) + { +- module_free(NULL, arg); ++ module_free_exec(NULL, ((struct bpf_jit_work *)arg)->image); ++ kfree(arg); + } + + /* run from softirq, we must use a work_struct to call +- * module_free() from process context ++ * module_free_exec() from process context + */ + void bpf_jit_free(struct sk_filter *fp) + { + if (fp->bpf_func != sk_run_filter) { +- struct work_struct *work = (struct work_struct *)fp->bpf_func; ++ struct work_struct *work = &fp->work->work; + + INIT_WORK(work, jit_free_defer); ++ fp->work->image = fp->bpf_func; + schedule_work(work); + } + } +diff --git a/arch/x86/oprofile/backtrace.c b/arch/x86/oprofile/backtrace.c +index d6aa6e8..266395a 100644 +--- a/arch/x86/oprofile/backtrace.c ++++ b/arch/x86/oprofile/backtrace.c +@@ -46,11 +46,11 @@ dump_user_backtrace_32(struct stack_frame_ia32 *head) + struct stack_frame_ia32 *fp; + unsigned long bytes; + +- bytes = copy_from_user_nmi(bufhead, head, sizeof(bufhead)); ++ bytes = copy_from_user_nmi(bufhead, (const char __force_user *)head, sizeof(bufhead)); + if (bytes != sizeof(bufhead)) + return NULL; + +- fp = (struct stack_frame_ia32 *) compat_ptr(bufhead[0].next_frame); ++ fp = (struct stack_frame_ia32 __force_kernel *) compat_ptr(bufhead[0].next_frame); + + oprofile_add_trace(bufhead[0].return_address); + +@@ -92,7 +92,7 @@ static struct stack_frame *dump_user_backtrace(struct stack_frame *head) + struct stack_frame bufhead[2]; + unsigned long bytes; + +- bytes = copy_from_user_nmi(bufhead, head, sizeof(bufhead)); ++ bytes = copy_from_user_nmi(bufhead, (const char __force_user *)head, sizeof(bufhead)); + if (bytes != sizeof(bufhead)) + return NULL; + +@@ -111,7 +111,7 @@ x86_backtrace(struct pt_regs * const regs, unsigned int depth) + { + struct stack_frame *head = (struct stack_frame *)frame_pointer(regs); + +- if (!user_mode_vm(regs)) { ++ if (!user_mode(regs)) { + unsigned long stack = kernel_stack_pointer(regs); + if (depth) + dump_trace(NULL, regs, (unsigned long *)stack, 0, +diff --git a/arch/x86/pci/mrst.c b/arch/x86/pci/mrst.c +index 140942f..8a5cc55 100644 +--- a/arch/x86/pci/mrst.c ++++ b/arch/x86/pci/mrst.c +@@ -238,7 +238,9 @@ int __init pci_mrst_init(void) + printk(KERN_INFO "Intel MID platform detected, using MID PCI ops\n"); + pci_mmcfg_late_init(); + pcibios_enable_irq = mrst_pci_irq_enable; +- pci_root_ops = pci_mrst_ops; ++ pax_open_kernel(); ++ memcpy((void *)&pci_root_ops, &pci_mrst_ops, sizeof(pci_mrst_ops)); ++ pax_close_kernel(); + pci_soc_mode = 1; + /* Continue with standard init */ + return 1; +diff --git a/arch/x86/pci/pcbios.c b/arch/x86/pci/pcbios.c +index da8fe05..7ee6704 100644 +--- a/arch/x86/pci/pcbios.c ++++ b/arch/x86/pci/pcbios.c +@@ -79,50 +79,93 @@ union bios32 { + static struct { + unsigned long address; + unsigned short segment; +-} bios32_indirect = { 0, __KERNEL_CS }; ++} bios32_indirect __read_only = { 0, __PCIBIOS_CS }; + + /* + * Returns the entry point for the given service, NULL on error + */ + +-static unsigned long bios32_service(unsigned long service) ++static unsigned long __devinit bios32_service(unsigned long service) + { + unsigned char return_code; /* %al */ + unsigned long address; /* %ebx */ + unsigned long length; /* %ecx */ + unsigned long entry; /* %edx */ + unsigned long flags; ++ struct desc_struct d, *gdt; + + local_irq_save(flags); +- __asm__("lcall *(%%edi); cld" ++ ++ gdt = get_cpu_gdt_table(smp_processor_id()); ++ ++ pack_descriptor(&d, 0UL, 0xFFFFFUL, 0x9B, 0xC); ++ write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_CS, &d, DESCTYPE_S); ++ pack_descriptor(&d, 0UL, 0xFFFFFUL, 0x93, 0xC); ++ write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_DS, &d, DESCTYPE_S); ++ ++ __asm__("movw %w7, %%ds; lcall *(%%edi); push %%ss; pop %%ds; cld" + : "=a" (return_code), + "=b" (address), + "=c" (length), + "=d" (entry) + : "0" (service), + "1" (0), +- "D" (&bios32_indirect)); ++ "D" (&bios32_indirect), ++ "r"(__PCIBIOS_DS) ++ : "memory"); ++ ++ pax_open_kernel(); ++ gdt[GDT_ENTRY_PCIBIOS_CS].a = 0; ++ gdt[GDT_ENTRY_PCIBIOS_CS].b = 0; ++ gdt[GDT_ENTRY_PCIBIOS_DS].a = 0; ++ gdt[GDT_ENTRY_PCIBIOS_DS].b = 0; ++ pax_close_kernel(); ++ + local_irq_restore(flags); + + switch (return_code) { +- case 0: +- return address + entry; +- case 0x80: /* Not present */ +- printk(KERN_WARNING "bios32_service(0x%lx): not present\n", service); +- return 0; +- default: /* Shouldn't happen */ +- printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n", +- service, return_code); ++ case 0: { ++ int cpu; ++ unsigned char flags; ++ ++ printk(KERN_INFO "bios32_service: base:%08lx length:%08lx entry:%08lx\n", address, length, entry); ++ if (address >= 0xFFFF0 || length > 0x100000 - address || length <= entry) { ++ printk(KERN_WARNING "bios32_service: not valid\n"); + return 0; ++ } ++ address = address + PAGE_OFFSET; ++ length += 16UL; /* some BIOSs underreport this... */ ++ flags = 4; ++ if (length >= 64*1024*1024) { ++ length >>= PAGE_SHIFT; ++ flags |= 8; ++ } ++ ++ for (cpu = 0; cpu < nr_cpu_ids; cpu++) { ++ gdt = get_cpu_gdt_table(cpu); ++ pack_descriptor(&d, address, length, 0x9b, flags); ++ write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_CS, &d, DESCTYPE_S); ++ pack_descriptor(&d, address, length, 0x93, flags); ++ write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_DS, &d, DESCTYPE_S); ++ } ++ return entry; ++ } ++ case 0x80: /* Not present */ ++ printk(KERN_WARNING "bios32_service(0x%lx): not present\n", service); ++ return 0; ++ default: /* Shouldn't happen */ ++ printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n", ++ service, return_code); ++ return 0; + } + } + + static struct { + unsigned long address; + unsigned short segment; +-} pci_indirect = { 0, __KERNEL_CS }; ++} pci_indirect __read_only = { 0, __PCIBIOS_CS }; + +-static int pci_bios_present; ++static int pci_bios_present __read_only; + + static int __devinit check_pcibios(void) + { +@@ -131,11 +174,13 @@ static int __devinit check_pcibios(void) + unsigned long flags, pcibios_entry; + + if ((pcibios_entry = bios32_service(PCI_SERVICE))) { +- pci_indirect.address = pcibios_entry + PAGE_OFFSET; ++ pci_indirect.address = pcibios_entry; + + local_irq_save(flags); +- __asm__( +- "lcall *(%%edi); cld\n\t" ++ __asm__("movw %w6, %%ds\n\t" ++ "lcall *%%ss:(%%edi); cld\n\t" ++ "push %%ss\n\t" ++ "pop %%ds\n\t" + "jc 1f\n\t" + "xor %%ah, %%ah\n" + "1:" +@@ -144,7 +189,8 @@ static int __devinit check_pcibios(void) + "=b" (ebx), + "=c" (ecx) + : "1" (PCIBIOS_PCI_BIOS_PRESENT), +- "D" (&pci_indirect) ++ "D" (&pci_indirect), ++ "r" (__PCIBIOS_DS) + : "memory"); + local_irq_restore(flags); + +@@ -189,7 +235,10 @@ static int pci_bios_read(unsigned int seg, unsigned int bus, + + switch (len) { + case 1: +- __asm__("lcall *(%%esi); cld\n\t" ++ __asm__("movw %w6, %%ds\n\t" ++ "lcall *%%ss:(%%esi); cld\n\t" ++ "push %%ss\n\t" ++ "pop %%ds\n\t" + "jc 1f\n\t" + "xor %%ah, %%ah\n" + "1:" +@@ -198,7 +247,8 @@ static int pci_bios_read(unsigned int seg, unsigned int bus, + : "1" (PCIBIOS_READ_CONFIG_BYTE), + "b" (bx), + "D" ((long)reg), +- "S" (&pci_indirect)); ++ "S" (&pci_indirect), ++ "r" (__PCIBIOS_DS)); + /* + * Zero-extend the result beyond 8 bits, do not trust the + * BIOS having done it: +@@ -206,7 +256,10 @@ static int pci_bios_read(unsigned int seg, unsigned int bus, + *value &= 0xff; + break; + case 2: +- __asm__("lcall *(%%esi); cld\n\t" ++ __asm__("movw %w6, %%ds\n\t" ++ "lcall *%%ss:(%%esi); cld\n\t" ++ "push %%ss\n\t" ++ "pop %%ds\n\t" + "jc 1f\n\t" + "xor %%ah, %%ah\n" + "1:" +@@ -215,7 +268,8 @@ static int pci_bios_read(unsigned int seg, unsigned int bus, + : "1" (PCIBIOS_READ_CONFIG_WORD), + "b" (bx), + "D" ((long)reg), +- "S" (&pci_indirect)); ++ "S" (&pci_indirect), ++ "r" (__PCIBIOS_DS)); + /* + * Zero-extend the result beyond 16 bits, do not trust the + * BIOS having done it: +@@ -223,7 +277,10 @@ static int pci_bios_read(unsigned int seg, unsigned int bus, + *value &= 0xffff; + break; + case 4: +- __asm__("lcall *(%%esi); cld\n\t" ++ __asm__("movw %w6, %%ds\n\t" ++ "lcall *%%ss:(%%esi); cld\n\t" ++ "push %%ss\n\t" ++ "pop %%ds\n\t" + "jc 1f\n\t" + "xor %%ah, %%ah\n" + "1:" +@@ -232,7 +289,8 @@ static int pci_bios_read(unsigned int seg, unsigned int bus, + : "1" (PCIBIOS_READ_CONFIG_DWORD), + "b" (bx), + "D" ((long)reg), +- "S" (&pci_indirect)); ++ "S" (&pci_indirect), ++ "r" (__PCIBIOS_DS)); + break; + } + +@@ -256,7 +314,10 @@ static int pci_bios_write(unsigned int seg, unsigned int bus, + + switch (len) { + case 1: +- __asm__("lcall *(%%esi); cld\n\t" ++ __asm__("movw %w6, %%ds\n\t" ++ "lcall *%%ss:(%%esi); cld\n\t" ++ "push %%ss\n\t" ++ "pop %%ds\n\t" + "jc 1f\n\t" + "xor %%ah, %%ah\n" + "1:" +@@ -265,10 +326,14 @@ static int pci_bios_write(unsigned int seg, unsigned int bus, + "c" (value), + "b" (bx), + "D" ((long)reg), +- "S" (&pci_indirect)); ++ "S" (&pci_indirect), ++ "r" (__PCIBIOS_DS)); + break; + case 2: +- __asm__("lcall *(%%esi); cld\n\t" ++ __asm__("movw %w6, %%ds\n\t" ++ "lcall *%%ss:(%%esi); cld\n\t" ++ "push %%ss\n\t" ++ "pop %%ds\n\t" + "jc 1f\n\t" + "xor %%ah, %%ah\n" + "1:" +@@ -277,10 +342,14 @@ static int pci_bios_write(unsigned int seg, unsigned int bus, + "c" (value), + "b" (bx), + "D" ((long)reg), +- "S" (&pci_indirect)); ++ "S" (&pci_indirect), ++ "r" (__PCIBIOS_DS)); + break; + case 4: +- __asm__("lcall *(%%esi); cld\n\t" ++ __asm__("movw %w6, %%ds\n\t" ++ "lcall *%%ss:(%%esi); cld\n\t" ++ "push %%ss\n\t" ++ "pop %%ds\n\t" + "jc 1f\n\t" + "xor %%ah, %%ah\n" + "1:" +@@ -289,7 +358,8 @@ static int pci_bios_write(unsigned int seg, unsigned int bus, + "c" (value), + "b" (bx), + "D" ((long)reg), +- "S" (&pci_indirect)); ++ "S" (&pci_indirect), ++ "r" (__PCIBIOS_DS)); + break; + } + +@@ -394,10 +464,13 @@ struct irq_routing_table * pcibios_get_irq_routing_table(void) + + DBG("PCI: Fetching IRQ routing table... "); + __asm__("push %%es\n\t" ++ "movw %w8, %%ds\n\t" + "push %%ds\n\t" + "pop %%es\n\t" +- "lcall *(%%esi); cld\n\t" ++ "lcall *%%ss:(%%esi); cld\n\t" + "pop %%es\n\t" ++ "push %%ss\n\t" ++ "pop %%ds\n" + "jc 1f\n\t" + "xor %%ah, %%ah\n" + "1:" +@@ -408,7 +481,8 @@ struct irq_routing_table * pcibios_get_irq_routing_table(void) + "1" (0), + "D" ((long) &opt), + "S" (&pci_indirect), +- "m" (opt) ++ "m" (opt), ++ "r" (__PCIBIOS_DS) + : "memory"); + DBG("OK ret=%d, size=%d, map=%x\n", ret, opt.size, map); + if (ret & 0xff00) +@@ -432,7 +506,10 @@ int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq) + { + int ret; + +- __asm__("lcall *(%%esi); cld\n\t" ++ __asm__("movw %w5, %%ds\n\t" ++ "lcall *%%ss:(%%esi); cld\n\t" ++ "push %%ss\n\t" ++ "pop %%ds\n" + "jc 1f\n\t" + "xor %%ah, %%ah\n" + "1:" +@@ -440,7 +517,8 @@ int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq) + : "0" (PCIBIOS_SET_PCI_HW_INT), + "b" ((dev->bus->number << 8) | dev->devfn), + "c" ((irq << 8) | (pin + 10)), +- "S" (&pci_indirect)); ++ "S" (&pci_indirect), ++ "r" (__PCIBIOS_DS)); + return !(ret & 0xff00); + } + EXPORT_SYMBOL(pcibios_set_irq_routing); +diff --git a/arch/x86/platform/efi/efi_32.c b/arch/x86/platform/efi/efi_32.c +index 40e4469..1ab536e 100644 +--- a/arch/x86/platform/efi/efi_32.c ++++ b/arch/x86/platform/efi/efi_32.c +@@ -44,11 +44,22 @@ void efi_call_phys_prelog(void) + { + struct desc_ptr gdt_descr; + ++#ifdef CONFIG_PAX_KERNEXEC ++ struct desc_struct d; ++#endif ++ + local_irq_save(efi_rt_eflags); + + load_cr3(initial_page_table); + __flush_tlb_all(); + ++#ifdef CONFIG_PAX_KERNEXEC ++ pack_descriptor(&d, 0, 0xFFFFF, 0x9B, 0xC); ++ write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_CS, &d, DESCTYPE_S); ++ pack_descriptor(&d, 0, 0xFFFFF, 0x93, 0xC); ++ write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_DS, &d, DESCTYPE_S); ++#endif ++ + gdt_descr.address = __pa(get_cpu_gdt_table(0)); + gdt_descr.size = GDT_SIZE - 1; + load_gdt(&gdt_descr); +@@ -58,6 +69,14 @@ void efi_call_phys_epilog(void) + { + struct desc_ptr gdt_descr; + ++#ifdef CONFIG_PAX_KERNEXEC ++ struct desc_struct d; ++ ++ memset(&d, 0, sizeof d); ++ write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_CS, &d, DESCTYPE_S); ++ write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_DS, &d, DESCTYPE_S); ++#endif ++ + gdt_descr.address = (unsigned long)get_cpu_gdt_table(0); + gdt_descr.size = GDT_SIZE - 1; + load_gdt(&gdt_descr); +diff --git a/arch/x86/platform/efi/efi_stub_32.S b/arch/x86/platform/efi/efi_stub_32.S +index fbe66e6..c5c0dd2 100644 +--- a/arch/x86/platform/efi/efi_stub_32.S ++++ b/arch/x86/platform/efi/efi_stub_32.S +@@ -6,7 +6,9 @@ + */ + + #include <linux/linkage.h> ++#include <linux/init.h> + #include <asm/page_types.h> ++#include <asm/segment.h> + + /* + * efi_call_phys(void *, ...) is a function with variable parameters. +@@ -20,7 +22,7 @@ + * service functions will comply with gcc calling convention, too. + */ + +-.text ++__INIT + ENTRY(efi_call_phys) + /* + * 0. The function can only be called in Linux kernel. So CS has been +@@ -36,9 +38,11 @@ ENTRY(efi_call_phys) + * The mapping of lower virtual memory has been created in prelog and + * epilog. + */ +- movl $1f, %edx +- subl $__PAGE_OFFSET, %edx +- jmp *%edx ++ movl $(__KERNEXEC_EFI_DS), %edx ++ mov %edx, %ds ++ mov %edx, %es ++ mov %edx, %ss ++ ljmp $(__KERNEXEC_EFI_CS),$1f-__PAGE_OFFSET + 1: + + /* +@@ -47,14 +51,8 @@ ENTRY(efi_call_phys) + * parameter 2, ..., param n. To make things easy, we save the return + * address of efi_call_phys in a global variable. + */ +- popl %edx +- movl %edx, saved_return_addr +- /* get the function pointer into ECX*/ +- popl %ecx +- movl %ecx, efi_rt_function_ptr +- movl $2f, %edx +- subl $__PAGE_OFFSET, %edx +- pushl %edx ++ popl (saved_return_addr) ++ popl (efi_rt_function_ptr) + + /* + * 3. Clear PG bit in %CR0. +@@ -73,9 +71,8 @@ ENTRY(efi_call_phys) + /* + * 5. Call the physical function. + */ +- jmp *%ecx ++ call *(efi_rt_function_ptr-__PAGE_OFFSET) + +-2: + /* + * 6. After EFI runtime service returns, control will return to + * following instruction. We'd better readjust stack pointer first. +@@ -88,35 +85,32 @@ ENTRY(efi_call_phys) + movl %cr0, %edx + orl $0x80000000, %edx + movl %edx, %cr0 +- jmp 1f +-1: ++ + /* + * 8. Now restore the virtual mode from flat mode by + * adding EIP with PAGE_OFFSET. + */ +- movl $1f, %edx +- jmp *%edx ++ ljmp $(__KERNEL_CS),$1f+__PAGE_OFFSET + 1: ++ movl $(__KERNEL_DS), %edx ++ mov %edx, %ds ++ mov %edx, %es ++ mov %edx, %ss + + /* + * 9. Balance the stack. And because EAX contain the return value, + * we'd better not clobber it. + */ +- leal efi_rt_function_ptr, %edx +- movl (%edx), %ecx +- pushl %ecx ++ pushl (efi_rt_function_ptr) + + /* +- * 10. Push the saved return address onto the stack and return. ++ * 10. Return to the saved return address. + */ +- leal saved_return_addr, %edx +- movl (%edx), %ecx +- pushl %ecx +- ret ++ jmpl *(saved_return_addr) + ENDPROC(efi_call_phys) + .previous + +-.data ++__INITDATA + saved_return_addr: + .long 0 + efi_rt_function_ptr: +diff --git a/arch/x86/platform/efi/efi_stub_64.S b/arch/x86/platform/efi/efi_stub_64.S +index 4c07cca..2c8427d 100644 +--- a/arch/x86/platform/efi/efi_stub_64.S ++++ b/arch/x86/platform/efi/efi_stub_64.S +@@ -7,6 +7,7 @@ + */ + + #include <linux/linkage.h> ++#include <asm/alternative-asm.h> + + #define SAVE_XMM \ + mov %rsp, %rax; \ +@@ -40,6 +41,7 @@ ENTRY(efi_call0) + call *%rdi + addq $32, %rsp + RESTORE_XMM ++ pax_force_retaddr 0, 1 + ret + ENDPROC(efi_call0) + +@@ -50,6 +52,7 @@ ENTRY(efi_call1) + call *%rdi + addq $32, %rsp + RESTORE_XMM ++ pax_force_retaddr 0, 1 + ret + ENDPROC(efi_call1) + +@@ -60,6 +63,7 @@ ENTRY(efi_call2) + call *%rdi + addq $32, %rsp + RESTORE_XMM ++ pax_force_retaddr 0, 1 + ret + ENDPROC(efi_call2) + +@@ -71,6 +75,7 @@ ENTRY(efi_call3) + call *%rdi + addq $32, %rsp + RESTORE_XMM ++ pax_force_retaddr 0, 1 + ret + ENDPROC(efi_call3) + +@@ -83,6 +88,7 @@ ENTRY(efi_call4) + call *%rdi + addq $32, %rsp + RESTORE_XMM ++ pax_force_retaddr 0, 1 + ret + ENDPROC(efi_call4) + +@@ -96,6 +102,7 @@ ENTRY(efi_call5) + call *%rdi + addq $48, %rsp + RESTORE_XMM ++ pax_force_retaddr 0, 1 + ret + ENDPROC(efi_call5) + +@@ -112,5 +119,6 @@ ENTRY(efi_call6) + call *%rdi + addq $48, %rsp + RESTORE_XMM ++ pax_force_retaddr 0, 1 + ret + ENDPROC(efi_call6) +diff --git a/arch/x86/platform/mrst/mrst.c b/arch/x86/platform/mrst/mrst.c +index e31bcd8..f12dc46 100644 +--- a/arch/x86/platform/mrst/mrst.c ++++ b/arch/x86/platform/mrst/mrst.c +@@ -78,13 +78,15 @@ struct sfi_rtc_table_entry sfi_mrtc_array[SFI_MRTC_MAX]; + EXPORT_SYMBOL_GPL(sfi_mrtc_array); + int sfi_mrtc_num; + +-static void mrst_power_off(void) ++static __noreturn void mrst_power_off(void) + { ++ BUG(); + } + +-static void mrst_reboot(void) ++static __noreturn void mrst_reboot(void) + { + intel_scu_ipc_simple_command(IPCMSG_COLD_BOOT, 0); ++ BUG(); + } + + /* parse all the mtimer info to a static mtimer array */ +diff --git a/arch/x86/power/cpu.c b/arch/x86/power/cpu.c +index 218cdb1..fd55c08 100644 +--- a/arch/x86/power/cpu.c ++++ b/arch/x86/power/cpu.c +@@ -132,7 +132,7 @@ static void do_fpu_end(void) + static void fix_processor_context(void) + { + int cpu = smp_processor_id(); +- struct tss_struct *t = &per_cpu(init_tss, cpu); ++ struct tss_struct *t = init_tss + cpu; + + set_tss_desc(cpu, t); /* + * This just modifies memory; should not be +@@ -142,7 +142,9 @@ static void fix_processor_context(void) + */ + + #ifdef CONFIG_X86_64 ++ pax_open_kernel(); + get_cpu_gdt_table(cpu)[GDT_ENTRY_TSS].type = 9; ++ pax_close_kernel(); + + syscall_init(); /* This sets MSR_*STAR and related */ + #endif +diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c +index b685296..e00eb65 100644 +--- a/arch/x86/tools/relocs.c ++++ b/arch/x86/tools/relocs.c +@@ -12,10 +12,13 @@ + #include <regex.h> + #include <tools/le_byteshift.h> + ++#include "../../../include/generated/autoconf.h" ++ + static void die(char *fmt, ...); + + #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) + static Elf32_Ehdr ehdr; ++static Elf32_Phdr *phdr; + static unsigned long reloc_count, reloc_idx; + static unsigned long *relocs; + static unsigned long reloc16_count, reloc16_idx; +@@ -323,9 +326,39 @@ static void read_ehdr(FILE *fp) + } + } + ++static void read_phdrs(FILE *fp) ++{ ++ unsigned int i; ++ ++ phdr = calloc(ehdr.e_phnum, sizeof(Elf32_Phdr)); ++ if (!phdr) { ++ die("Unable to allocate %d program headers\n", ++ ehdr.e_phnum); ++ } ++ if (fseek(fp, ehdr.e_phoff, SEEK_SET) < 0) { ++ die("Seek to %d failed: %s\n", ++ ehdr.e_phoff, strerror(errno)); ++ } ++ if (fread(phdr, sizeof(*phdr), ehdr.e_phnum, fp) != ehdr.e_phnum) { ++ die("Cannot read ELF program headers: %s\n", ++ strerror(errno)); ++ } ++ for(i = 0; i < ehdr.e_phnum; i++) { ++ phdr[i].p_type = elf32_to_cpu(phdr[i].p_type); ++ phdr[i].p_offset = elf32_to_cpu(phdr[i].p_offset); ++ phdr[i].p_vaddr = elf32_to_cpu(phdr[i].p_vaddr); ++ phdr[i].p_paddr = elf32_to_cpu(phdr[i].p_paddr); ++ phdr[i].p_filesz = elf32_to_cpu(phdr[i].p_filesz); ++ phdr[i].p_memsz = elf32_to_cpu(phdr[i].p_memsz); ++ phdr[i].p_flags = elf32_to_cpu(phdr[i].p_flags); ++ phdr[i].p_align = elf32_to_cpu(phdr[i].p_align); ++ } ++ ++} ++ + static void read_shdrs(FILE *fp) + { +- int i; ++ unsigned int i; + Elf32_Shdr shdr; + + secs = calloc(ehdr.e_shnum, sizeof(struct section)); +@@ -360,7 +393,7 @@ static void read_shdrs(FILE *fp) + + static void read_strtabs(FILE *fp) + { +- int i; ++ unsigned int i; + for (i = 0; i < ehdr.e_shnum; i++) { + struct section *sec = &secs[i]; + if (sec->shdr.sh_type != SHT_STRTAB) { +@@ -385,7 +418,7 @@ static void read_strtabs(FILE *fp) + + static void read_symtabs(FILE *fp) + { +- int i,j; ++ unsigned int i,j; + for (i = 0; i < ehdr.e_shnum; i++) { + struct section *sec = &secs[i]; + if (sec->shdr.sh_type != SHT_SYMTAB) { +@@ -418,7 +451,9 @@ static void read_symtabs(FILE *fp) + + static void read_relocs(FILE *fp) + { +- int i,j; ++ unsigned int i,j; ++ uint32_t base; ++ + for (i = 0; i < ehdr.e_shnum; i++) { + struct section *sec = &secs[i]; + if (sec->shdr.sh_type != SHT_REL) { +@@ -438,9 +473,22 @@ static void read_relocs(FILE *fp) + die("Cannot read symbol table: %s\n", + strerror(errno)); + } ++ base = 0; ++ ++#if defined(CONFIG_PAX_KERNEXEC) && defined(CONFIG_X86_32) ++ for (j = 0; j < ehdr.e_phnum; j++) { ++ if (phdr[j].p_type != PT_LOAD ) ++ continue; ++ if (secs[sec->shdr.sh_info].shdr.sh_offset < phdr[j].p_offset || secs[sec->shdr.sh_info].shdr.sh_offset >= phdr[j].p_offset + phdr[j].p_filesz) ++ continue; ++ base = CONFIG_PAGE_OFFSET + phdr[j].p_paddr - phdr[j].p_vaddr; ++ break; ++ } ++#endif ++ + for (j = 0; j < sec->shdr.sh_size/sizeof(Elf32_Rel); j++) { + Elf32_Rel *rel = &sec->reltab[j]; +- rel->r_offset = elf32_to_cpu(rel->r_offset); ++ rel->r_offset = elf32_to_cpu(rel->r_offset) + base; + rel->r_info = elf32_to_cpu(rel->r_info); + } + } +@@ -449,13 +497,13 @@ static void read_relocs(FILE *fp) + + static void print_absolute_symbols(void) + { +- int i; ++ unsigned int i; + printf("Absolute symbols\n"); + printf(" Num: Value Size Type Bind Visibility Name\n"); + for (i = 0; i < ehdr.e_shnum; i++) { + struct section *sec = &secs[i]; + char *sym_strtab; +- int j; ++ unsigned int j; + + if (sec->shdr.sh_type != SHT_SYMTAB) { + continue; +@@ -482,14 +530,14 @@ static void print_absolute_symbols(void) + + static void print_absolute_relocs(void) + { +- int i, printed = 0; ++ unsigned int i, printed = 0; + + for (i = 0; i < ehdr.e_shnum; i++) { + struct section *sec = &secs[i]; + struct section *sec_applies, *sec_symtab; + char *sym_strtab; + Elf32_Sym *sh_symtab; +- int j; ++ unsigned int j; + if (sec->shdr.sh_type != SHT_REL) { + continue; + } +@@ -551,13 +599,13 @@ static void print_absolute_relocs(void) + static void walk_relocs(void (*visit)(Elf32_Rel *rel, Elf32_Sym *sym), + int use_real_mode) + { +- int i; ++ unsigned int i; + /* Walk through the relocations */ + for (i = 0; i < ehdr.e_shnum; i++) { + char *sym_strtab; + Elf32_Sym *sh_symtab; + struct section *sec_applies, *sec_symtab; +- int j; ++ unsigned int j; + struct section *sec = &secs[i]; + + if (sec->shdr.sh_type != SHT_REL) { +@@ -581,6 +629,22 @@ static void walk_relocs(void (*visit)(Elf32_Rel *rel, Elf32_Sym *sym), + sym = &sh_symtab[ELF32_R_SYM(rel->r_info)]; + r_type = ELF32_R_TYPE(rel->r_info); + ++ /* Don't relocate actual per-cpu variables, they are absolute indices, not addresses */ ++ if (!strcmp(sec_name(sym->st_shndx), ".data..percpu") && strcmp(sym_name(sym_strtab, sym), "__per_cpu_load")) ++ continue; ++ ++#if defined(CONFIG_PAX_KERNEXEC) && defined(CONFIG_X86_32) ++ /* Don't relocate actual code, they are relocated implicitly by the base address of KERNEL_CS */ ++ if (!strcmp(sec_name(sym->st_shndx), ".module.text") && !strcmp(sym_name(sym_strtab, sym), "_etext")) ++ continue; ++ if (!strcmp(sec_name(sym->st_shndx), ".init.text")) ++ continue; ++ if (!strcmp(sec_name(sym->st_shndx), ".exit.text")) ++ continue; ++ if (!strcmp(sec_name(sym->st_shndx), ".text") && strcmp(sym_name(sym_strtab, sym), "__LOAD_PHYSICAL_ADDR")) ++ continue; ++#endif ++ + shn_abs = sym->st_shndx == SHN_ABS; + + switch (r_type) { +@@ -674,7 +738,7 @@ static int write32(unsigned int v, FILE *f) + + static void emit_relocs(int as_text, int use_real_mode) + { +- int i; ++ unsigned int i; + /* Count how many relocations I have and allocate space for them. */ + reloc_count = 0; + walk_relocs(count_reloc, use_real_mode); +@@ -801,6 +865,7 @@ int main(int argc, char **argv) + fname, strerror(errno)); + } + read_ehdr(fp); ++ read_phdrs(fp); + read_shdrs(fp); + read_strtabs(fp); + read_symtabs(fp); +diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile +index fd14be1..e3c79c0 100644 +--- a/arch/x86/vdso/Makefile ++++ b/arch/x86/vdso/Makefile +@@ -181,7 +181,7 @@ quiet_cmd_vdso = VDSO $@ + -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) && \ + sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@' + +-VDSO_LDFLAGS = -fPIC -shared $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) ++VDSO_LDFLAGS = -fPIC -shared -Wl,--no-undefined $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) + GCOV_PROFILE := n + + # +diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c +index 66e6d93..587f435 100644 +--- a/arch/x86/vdso/vdso32-setup.c ++++ b/arch/x86/vdso/vdso32-setup.c +@@ -25,6 +25,7 @@ + #include <asm/tlbflush.h> + #include <asm/vdso.h> + #include <asm/proto.h> ++#include <asm/mman.h> + + enum { + VDSO_DISABLED = 0, +@@ -226,7 +227,7 @@ static inline void map_compat_vdso(int map) + void enable_sep_cpu(void) + { + int cpu = get_cpu(); +- struct tss_struct *tss = &per_cpu(init_tss, cpu); ++ struct tss_struct *tss = init_tss + cpu; + + if (!boot_cpu_has(X86_FEATURE_SEP)) { + put_cpu(); +@@ -249,7 +250,7 @@ static int __init gate_vma_init(void) + gate_vma.vm_start = FIXADDR_USER_START; + gate_vma.vm_end = FIXADDR_USER_END; + gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC; +- gate_vma.vm_page_prot = __P101; ++ gate_vma.vm_page_prot = vm_get_page_prot(gate_vma.vm_flags); + + return 0; + } +@@ -330,14 +331,14 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) + if (compat) + addr = VDSO_HIGH_BASE; + else { +- addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, 0); ++ addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, MAP_EXECUTABLE); + if (IS_ERR_VALUE(addr)) { + ret = addr; + goto up_fail; + } + } + +- current->mm->context.vdso = (void *)addr; ++ current->mm->context.vdso = addr; + + if (compat_uses_vma || !compat) { + /* +@@ -353,11 +354,11 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) + } + + current_thread_info()->sysenter_return = +- VDSO32_SYMBOL(addr, SYSENTER_RETURN); ++ (__force void __user *)VDSO32_SYMBOL(addr, SYSENTER_RETURN); + + up_fail: + if (ret) +- current->mm->context.vdso = NULL; ++ current->mm->context.vdso = 0; + + up_write(&mm->mmap_sem); + +@@ -404,8 +405,14 @@ __initcall(ia32_binfmt_init); + + const char *arch_vma_name(struct vm_area_struct *vma) + { +- if (vma->vm_mm && vma->vm_start == (long)vma->vm_mm->context.vdso) ++ if (vma->vm_mm && vma->vm_start == vma->vm_mm->context.vdso) + return "[vdso]"; ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (vma->vm_mm && vma->vm_mirror && vma->vm_mirror->vm_start == vma->vm_mm->context.vdso) ++ return "[vdso]"; ++#endif ++ + return NULL; + } + +@@ -415,7 +422,7 @@ struct vm_area_struct *get_gate_vma(struct mm_struct *mm) + * Check to see if the corresponding task was created in compat vdso + * mode. + */ +- if (mm && mm->context.vdso == (void *)VDSO_HIGH_BASE) ++ if (mm && mm->context.vdso == VDSO_HIGH_BASE) + return &gate_vma; + return NULL; + } +diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c +index 00aaf04..4a26505 100644 +--- a/arch/x86/vdso/vma.c ++++ b/arch/x86/vdso/vma.c +@@ -16,8 +16,6 @@ + #include <asm/vdso.h> + #include <asm/page.h> + +-unsigned int __read_mostly vdso_enabled = 1; +- + extern char vdso_start[], vdso_end[]; + extern unsigned short vdso_sync_cpuid; + +@@ -141,7 +139,6 @@ static unsigned long vdso_addr(unsigned long start, unsigned len) + * unaligned here as a result of stack start randomization. + */ + addr = PAGE_ALIGN(addr); +- addr = align_addr(addr, NULL, ALIGN_VDSO); + + return addr; + } +@@ -154,30 +151,31 @@ static int setup_additional_pages(struct linux_binprm *bprm, + unsigned size) + { + struct mm_struct *mm = current->mm; +- unsigned long addr; ++ unsigned long addr = 0; + int ret; + +- if (!vdso_enabled) +- return 0; +- + down_write(&mm->mmap_sem); ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) ++#endif ++ + addr = vdso_addr(mm->start_stack, size); ++ addr = align_addr(addr, NULL, ALIGN_VDSO); + addr = get_unmapped_area(NULL, addr, size, 0, 0); + if (IS_ERR_VALUE(addr)) { + ret = addr; + goto up_fail; + } + +- current->mm->context.vdso = (void *)addr; ++ mm->context.vdso = addr; + + ret = install_special_mapping(mm, addr, size, + VM_READ|VM_EXEC| + VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC, + pages); +- if (ret) { +- current->mm->context.vdso = NULL; +- goto up_fail; +- } ++ if (ret) ++ mm->context.vdso = 0; + + up_fail: + up_write(&mm->mmap_sem); +@@ -197,10 +195,3 @@ int x32_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) + vdsox32_size); + } + #endif +- +-static __init int vdso_setup(char *s) +-{ +- vdso_enabled = simple_strtoul(s, NULL, 0); +- return 0; +-} +-__setup("vdso=", vdso_setup); +diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c +index 40edfc3..b4d80ac 100644 +--- a/arch/x86/xen/enlighten.c ++++ b/arch/x86/xen/enlighten.c +@@ -95,8 +95,6 @@ EXPORT_SYMBOL_GPL(xen_start_info); + + struct shared_info xen_dummy_shared_info; + +-void *xen_initial_gdt; +- + RESERVE_BRK(shared_info_page_brk, PAGE_SIZE); + __read_mostly int xen_have_vector_callback; + EXPORT_SYMBOL_GPL(xen_have_vector_callback); +@@ -1165,30 +1163,30 @@ static const struct pv_apic_ops xen_apic_ops __initconst = { + #endif + }; + +-static void xen_reboot(int reason) ++static __noreturn void xen_reboot(int reason) + { + struct sched_shutdown r = { .reason = reason }; + +- if (HYPERVISOR_sched_op(SCHEDOP_shutdown, &r)) +- BUG(); ++ HYPERVISOR_sched_op(SCHEDOP_shutdown, &r); ++ BUG(); + } + +-static void xen_restart(char *msg) ++static __noreturn void xen_restart(char *msg) + { + xen_reboot(SHUTDOWN_reboot); + } + +-static void xen_emergency_restart(void) ++static __noreturn void xen_emergency_restart(void) + { + xen_reboot(SHUTDOWN_reboot); + } + +-static void xen_machine_halt(void) ++static __noreturn void xen_machine_halt(void) + { + xen_reboot(SHUTDOWN_poweroff); + } + +-static void xen_machine_power_off(void) ++static __noreturn void xen_machine_power_off(void) + { + if (pm_power_off) + pm_power_off(); +@@ -1291,7 +1289,17 @@ asmlinkage void __init xen_start_kernel(void) + __userpte_alloc_gfp &= ~__GFP_HIGHMEM; + + /* Work out if we support NX */ +- x86_configure_nx(); ++#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) ++ if ((cpuid_eax(0x80000000) & 0xffff0000) == 0x80000000 && ++ (cpuid_edx(0x80000001) & (1U << (X86_FEATURE_NX & 31)))) { ++ unsigned l, h; ++ ++ __supported_pte_mask |= _PAGE_NX; ++ rdmsr(MSR_EFER, l, h); ++ l |= EFER_NX; ++ wrmsr(MSR_EFER, l, h); ++ } ++#endif + + xen_setup_features(); + +@@ -1322,13 +1330,6 @@ asmlinkage void __init xen_start_kernel(void) + + machine_ops = xen_machine_ops; + +- /* +- * The only reliable way to retain the initial address of the +- * percpu gdt_page is to remember it here, so we can go and +- * mark it RW later, when the initial percpu area is freed. +- */ +- xen_initial_gdt = &per_cpu(gdt_page, 0); +- + xen_smp_init(); + + #ifdef CONFIG_ACPI_NUMA +diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c +index 69f5857..0699dc5 100644 +--- a/arch/x86/xen/mmu.c ++++ b/arch/x86/xen/mmu.c +@@ -1738,6 +1738,9 @@ pgd_t * __init xen_setup_kernel_pagetable(pgd_t *pgd, + convert_pfn_mfn(init_level4_pgt); + convert_pfn_mfn(level3_ident_pgt); + convert_pfn_mfn(level3_kernel_pgt); ++ convert_pfn_mfn(level3_vmalloc_start_pgt); ++ convert_pfn_mfn(level3_vmalloc_end_pgt); ++ convert_pfn_mfn(level3_vmemmap_pgt); + + l3 = m2v(pgd[pgd_index(__START_KERNEL_map)].pgd); + l2 = m2v(l3[pud_index(__START_KERNEL_map)].pud); +@@ -1756,7 +1759,11 @@ pgd_t * __init xen_setup_kernel_pagetable(pgd_t *pgd, + set_page_prot(init_level4_pgt, PAGE_KERNEL_RO); + set_page_prot(level3_ident_pgt, PAGE_KERNEL_RO); + set_page_prot(level3_kernel_pgt, PAGE_KERNEL_RO); ++ set_page_prot(level3_vmalloc_start_pgt, PAGE_KERNEL_RO); ++ set_page_prot(level3_vmalloc_end_pgt, PAGE_KERNEL_RO); ++ set_page_prot(level3_vmemmap_pgt, PAGE_KERNEL_RO); + set_page_prot(level3_user_vsyscall, PAGE_KERNEL_RO); ++ set_page_prot(level2_vmemmap_pgt, PAGE_KERNEL_RO); + set_page_prot(level2_kernel_pgt, PAGE_KERNEL_RO); + set_page_prot(level2_fixmap_pgt, PAGE_KERNEL_RO); + +@@ -1964,6 +1971,7 @@ static void __init xen_post_allocator_init(void) + pv_mmu_ops.set_pud = xen_set_pud; + #if PAGETABLE_LEVELS == 4 + pv_mmu_ops.set_pgd = xen_set_pgd; ++ pv_mmu_ops.set_pgd_batched = xen_set_pgd; + #endif + + /* This will work as long as patching hasn't happened yet +@@ -2045,6 +2053,7 @@ static const struct pv_mmu_ops xen_mmu_ops __initconst = { + .pud_val = PV_CALLEE_SAVE(xen_pud_val), + .make_pud = PV_CALLEE_SAVE(xen_make_pud), + .set_pgd = xen_set_pgd_hyper, ++ .set_pgd_batched = xen_set_pgd_hyper, + + .alloc_pud = xen_alloc_pmd_init, + .release_pud = xen_release_pmd_init, +diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c +index 0503c0c..ceb2d16 100644 +--- a/arch/x86/xen/smp.c ++++ b/arch/x86/xen/smp.c +@@ -215,11 +215,6 @@ static void __init xen_smp_prepare_boot_cpu(void) + { + BUG_ON(smp_processor_id() != 0); + native_smp_prepare_boot_cpu(); +- +- /* We've switched to the "real" per-cpu gdt, so make sure the +- old memory can be recycled */ +- make_lowmem_page_readwrite(xen_initial_gdt); +- + xen_filter_cpu_maps(); + xen_setup_vcpu_info_placement(); + } +@@ -296,12 +291,12 @@ cpu_initialize_context(unsigned int cpu, struct task_struct *idle) + gdt = get_cpu_gdt_table(cpu); + + ctxt->flags = VGCF_IN_KERNEL; +- ctxt->user_regs.ds = __USER_DS; +- ctxt->user_regs.es = __USER_DS; ++ ctxt->user_regs.ds = __KERNEL_DS; ++ ctxt->user_regs.es = __KERNEL_DS; + ctxt->user_regs.ss = __KERNEL_DS; + #ifdef CONFIG_X86_32 + ctxt->user_regs.fs = __KERNEL_PERCPU; +- ctxt->user_regs.gs = __KERNEL_STACK_CANARY; ++ savesegment(gs, ctxt->user_regs.gs); + #else + ctxt->gs_base_kernel = per_cpu_offset(cpu); + #endif +@@ -352,13 +347,12 @@ static int __cpuinit xen_cpu_up(unsigned int cpu) + int rc; + + per_cpu(current_task, cpu) = idle; ++ per_cpu(current_tinfo, cpu) = &idle->tinfo; + #ifdef CONFIG_X86_32 + irq_ctx_init(cpu); + #else + clear_tsk_thread_flag(idle, TIF_FORK); +- per_cpu(kernel_stack, cpu) = +- (unsigned long)task_stack_page(idle) - +- KERNEL_STACK_OFFSET + THREAD_SIZE; ++ per_cpu(kernel_stack, cpu) = (unsigned long)task_stack_page(idle) - 16 + THREAD_SIZE; + #endif + xen_setup_runstate_info(cpu); + xen_setup_timer(cpu); +diff --git a/arch/x86/xen/xen-asm_32.S b/arch/x86/xen/xen-asm_32.S +index b040b0e..8cc4fe0 100644 +--- a/arch/x86/xen/xen-asm_32.S ++++ b/arch/x86/xen/xen-asm_32.S +@@ -83,14 +83,14 @@ ENTRY(xen_iret) + ESP_OFFSET=4 # bytes pushed onto stack + + /* +- * Store vcpu_info pointer for easy access. Do it this way to +- * avoid having to reload %fs ++ * Store vcpu_info pointer for easy access. + */ + #ifdef CONFIG_SMP +- GET_THREAD_INFO(%eax) +- movl TI_cpu(%eax), %eax +- movl __per_cpu_offset(,%eax,4), %eax +- mov xen_vcpu(%eax), %eax ++ push %fs ++ mov $(__KERNEL_PERCPU), %eax ++ mov %eax, %fs ++ mov PER_CPU_VAR(xen_vcpu), %eax ++ pop %fs + #else + movl xen_vcpu, %eax + #endif +diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S +index aaa7291..3f77960 100644 +--- a/arch/x86/xen/xen-head.S ++++ b/arch/x86/xen/xen-head.S +@@ -19,6 +19,17 @@ ENTRY(startup_xen) + #ifdef CONFIG_X86_32 + mov %esi,xen_start_info + mov $init_thread_union+THREAD_SIZE,%esp ++#ifdef CONFIG_SMP ++ movl $cpu_gdt_table,%edi ++ movl $__per_cpu_load,%eax ++ movw %ax,__KERNEL_PERCPU + 2(%edi) ++ rorl $16,%eax ++ movb %al,__KERNEL_PERCPU + 4(%edi) ++ movb %ah,__KERNEL_PERCPU + 7(%edi) ++ movl $__per_cpu_end - 1,%eax ++ subl $__per_cpu_start,%eax ++ movw %ax,__KERNEL_PERCPU + 0(%edi) ++#endif + #else + mov %rsi,xen_start_info + mov $init_thread_union+THREAD_SIZE,%rsp +diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h +index b095739..8c17bcd 100644 +--- a/arch/x86/xen/xen-ops.h ++++ b/arch/x86/xen/xen-ops.h +@@ -10,8 +10,6 @@ + extern const char xen_hypervisor_callback[]; + extern const char xen_failsafe_callback[]; + +-extern void *xen_initial_gdt; +- + struct trap_info; + void xen_copy_trap_info(struct trap_info *traps); + +diff --git a/arch/xtensa/variants/dc232b/include/variant/core.h b/arch/xtensa/variants/dc232b/include/variant/core.h +index 525bd3d..ef888b1 100644 +--- a/arch/xtensa/variants/dc232b/include/variant/core.h ++++ b/arch/xtensa/variants/dc232b/include/variant/core.h +@@ -119,9 +119,9 @@ + ----------------------------------------------------------------------*/ + + #define XCHAL_ICACHE_LINESIZE 32 /* I-cache line size in bytes */ +-#define XCHAL_DCACHE_LINESIZE 32 /* D-cache line size in bytes */ + #define XCHAL_ICACHE_LINEWIDTH 5 /* log2(I line size in bytes) */ + #define XCHAL_DCACHE_LINEWIDTH 5 /* log2(D line size in bytes) */ ++#define XCHAL_DCACHE_LINESIZE (_AC(1,UL) << XCHAL_DCACHE_LINEWIDTH) /* D-cache line size in bytes */ + + #define XCHAL_ICACHE_SIZE 16384 /* I-cache size in bytes or 0 */ + #define XCHAL_DCACHE_SIZE 16384 /* D-cache size in bytes or 0 */ +diff --git a/arch/xtensa/variants/fsf/include/variant/core.h b/arch/xtensa/variants/fsf/include/variant/core.h +index 2f33760..835e50a 100644 +--- a/arch/xtensa/variants/fsf/include/variant/core.h ++++ b/arch/xtensa/variants/fsf/include/variant/core.h +@@ -11,6 +11,7 @@ + #ifndef _XTENSA_CORE_H + #define _XTENSA_CORE_H + ++#include <linux/const.h> + + /**************************************************************************** + Parameters Useful for Any Code, USER or PRIVILEGED +@@ -112,9 +113,9 @@ + ----------------------------------------------------------------------*/ + + #define XCHAL_ICACHE_LINESIZE 16 /* I-cache line size in bytes */ +-#define XCHAL_DCACHE_LINESIZE 16 /* D-cache line size in bytes */ + #define XCHAL_ICACHE_LINEWIDTH 4 /* log2(I line size in bytes) */ + #define XCHAL_DCACHE_LINEWIDTH 4 /* log2(D line size in bytes) */ ++#define XCHAL_DCACHE_LINESIZE (_AC(1,UL) << XCHAL_DCACHE_LINEWIDTH) /* D-cache line size in bytes */ + + #define XCHAL_ICACHE_SIZE 8192 /* I-cache size in bytes or 0 */ + #define XCHAL_DCACHE_SIZE 8192 /* D-cache size in bytes or 0 */ +diff --git a/arch/xtensa/variants/s6000/include/variant/core.h b/arch/xtensa/variants/s6000/include/variant/core.h +index af00795..2bb8105 100644 +--- a/arch/xtensa/variants/s6000/include/variant/core.h ++++ b/arch/xtensa/variants/s6000/include/variant/core.h +@@ -11,6 +11,7 @@ + #ifndef _XTENSA_CORE_CONFIGURATION_H + #define _XTENSA_CORE_CONFIGURATION_H + ++#include <linux/const.h> + + /**************************************************************************** + Parameters Useful for Any Code, USER or PRIVILEGED +@@ -118,9 +119,9 @@ + ----------------------------------------------------------------------*/ + + #define XCHAL_ICACHE_LINESIZE 16 /* I-cache line size in bytes */ +-#define XCHAL_DCACHE_LINESIZE 16 /* D-cache line size in bytes */ + #define XCHAL_ICACHE_LINEWIDTH 4 /* log2(I line size in bytes) */ + #define XCHAL_DCACHE_LINEWIDTH 4 /* log2(D line size in bytes) */ ++#define XCHAL_DCACHE_LINESIZE (_AC(1,UL) << XCHAL_DCACHE_LINEWIDTH) /* D-cache line size in bytes */ + + #define XCHAL_ICACHE_SIZE 32768 /* I-cache size in bytes or 0 */ + #define XCHAL_DCACHE_SIZE 32768 /* D-cache size in bytes or 0 */ +diff --git a/block/blk-iopoll.c b/block/blk-iopoll.c +index 58916af..9cb880b 100644 +--- a/block/blk-iopoll.c ++++ b/block/blk-iopoll.c +@@ -77,7 +77,7 @@ void blk_iopoll_complete(struct blk_iopoll *iopoll) + } + EXPORT_SYMBOL(blk_iopoll_complete); + +-static void blk_iopoll_softirq(struct softirq_action *h) ++static void blk_iopoll_softirq(void) + { + struct list_head *list = &__get_cpu_var(blk_cpu_iopoll); + int rearm = 0, budget = blk_iopoll_budget; +diff --git a/block/blk-map.c b/block/blk-map.c +index 623e1cd..ca1e109 100644 +--- a/block/blk-map.c ++++ b/block/blk-map.c +@@ -302,7 +302,7 @@ int blk_rq_map_kern(struct request_queue *q, struct request *rq, void *kbuf, + if (!len || !kbuf) + return -EINVAL; + +- do_copy = !blk_rq_aligned(q, addr, len) || object_is_on_stack(kbuf); ++ do_copy = !blk_rq_aligned(q, addr, len) || object_starts_on_stack(kbuf); + if (do_copy) + bio = bio_copy_kern(q, kbuf, len, gfp_mask, reading); + else +diff --git a/block/blk-softirq.c b/block/blk-softirq.c +index 467c8de..4bddc6d 100644 +--- a/block/blk-softirq.c ++++ b/block/blk-softirq.c +@@ -18,7 +18,7 @@ static DEFINE_PER_CPU(struct list_head, blk_cpu_done); + * Softirq action handler - move entries to local list and loop over them + * while passing them to the queue registered handler. + */ +-static void blk_done_softirq(struct softirq_action *h) ++static void blk_done_softirq(void) + { + struct list_head *cpu_list, local_list; + +diff --git a/block/bsg.c b/block/bsg.c +index ff64ae3..593560c 100644 +--- a/block/bsg.c ++++ b/block/bsg.c +@@ -176,16 +176,24 @@ static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq, + struct sg_io_v4 *hdr, struct bsg_device *bd, + fmode_t has_write_perm) + { ++ unsigned char tmpcmd[sizeof(rq->__cmd)]; ++ unsigned char *cmdptr; ++ + if (hdr->request_len > BLK_MAX_CDB) { + rq->cmd = kzalloc(hdr->request_len, GFP_KERNEL); + if (!rq->cmd) + return -ENOMEM; +- } ++ cmdptr = rq->cmd; ++ } else ++ cmdptr = tmpcmd; + +- if (copy_from_user(rq->cmd, (void __user *)(unsigned long)hdr->request, ++ if (copy_from_user(cmdptr, (void __user *)(unsigned long)hdr->request, + hdr->request_len)) + return -EFAULT; + ++ if (cmdptr != rq->cmd) ++ memcpy(rq->cmd, cmdptr, hdr->request_len); ++ + if (hdr->subprotocol == BSG_SUB_PROTOCOL_SCSI_CMD) { + if (blk_verify_command(rq->cmd, has_write_perm)) + return -EPERM; +diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c +index 7c668c8..db3521c 100644 +--- a/block/compat_ioctl.c ++++ b/block/compat_ioctl.c +@@ -340,7 +340,7 @@ static int compat_fd_ioctl(struct block_device *bdev, fmode_t mode, + err |= __get_user(f->spec1, &uf->spec1); + err |= __get_user(f->fmt_gap, &uf->fmt_gap); + err |= __get_user(name, &uf->name); +- f->name = compat_ptr(name); ++ f->name = (void __force_kernel *)compat_ptr(name); + if (err) { + err = -EFAULT; + goto out; +diff --git a/block/partitions/efi.c b/block/partitions/efi.c +index 6296b40..417c00f 100644 +--- a/block/partitions/efi.c ++++ b/block/partitions/efi.c +@@ -234,14 +234,14 @@ static gpt_entry *alloc_read_gpt_entries(struct parsed_partitions *state, + if (!gpt) + return NULL; + ++ if (!le32_to_cpu(gpt->num_partition_entries)) ++ return NULL; ++ pte = kcalloc(le32_to_cpu(gpt->num_partition_entries), le32_to_cpu(gpt->sizeof_partition_entry), GFP_KERNEL); ++ if (!pte) ++ return NULL; ++ + count = le32_to_cpu(gpt->num_partition_entries) * + le32_to_cpu(gpt->sizeof_partition_entry); +- if (!count) +- return NULL; +- pte = kzalloc(count, GFP_KERNEL); +- if (!pte) +- return NULL; +- + if (read_lba(state, le64_to_cpu(gpt->partition_entry_lba), + (u8 *) pte, + count) < count) { +diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c +index 260fa80..e8f3caf 100644 +--- a/block/scsi_ioctl.c ++++ b/block/scsi_ioctl.c +@@ -223,8 +223,20 @@ EXPORT_SYMBOL(blk_verify_command); + static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq, + struct sg_io_hdr *hdr, fmode_t mode) + { +- if (copy_from_user(rq->cmd, hdr->cmdp, hdr->cmd_len)) ++ unsigned char tmpcmd[sizeof(rq->__cmd)]; ++ unsigned char *cmdptr; ++ ++ if (rq->cmd != rq->__cmd) ++ cmdptr = rq->cmd; ++ else ++ cmdptr = tmpcmd; ++ ++ if (copy_from_user(cmdptr, hdr->cmdp, hdr->cmd_len)) + return -EFAULT; ++ ++ if (cmdptr != rq->cmd) ++ memcpy(rq->cmd, cmdptr, hdr->cmd_len); ++ + if (blk_verify_command(rq->cmd, mode & FMODE_WRITE)) + return -EPERM; + +@@ -433,6 +445,8 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode, + int err; + unsigned int in_len, out_len, bytes, opcode, cmdlen; + char *buffer = NULL, sense[SCSI_SENSE_BUFFERSIZE]; ++ unsigned char tmpcmd[sizeof(rq->__cmd)]; ++ unsigned char *cmdptr; + + if (!sic) + return -EINVAL; +@@ -466,9 +480,18 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode, + */ + err = -EFAULT; + rq->cmd_len = cmdlen; +- if (copy_from_user(rq->cmd, sic->data, cmdlen)) ++ ++ if (rq->cmd != rq->__cmd) ++ cmdptr = rq->cmd; ++ else ++ cmdptr = tmpcmd; ++ ++ if (copy_from_user(cmdptr, sic->data, cmdlen)) + goto error; + ++ if (rq->cmd != cmdptr) ++ memcpy(rq->cmd, cmdptr, cmdlen); ++ + if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len)) + goto error; + +diff --git a/crypto/cryptd.c b/crypto/cryptd.c +index 671d4d6..5f24030 100644 +--- a/crypto/cryptd.c ++++ b/crypto/cryptd.c +@@ -63,7 +63,7 @@ struct cryptd_blkcipher_ctx { + + struct cryptd_blkcipher_request_ctx { + crypto_completion_t complete; +-}; ++} __no_const; + + struct cryptd_hash_ctx { + struct crypto_shash *child; +@@ -80,7 +80,7 @@ struct cryptd_aead_ctx { + + struct cryptd_aead_request_ctx { + crypto_completion_t complete; +-}; ++} __no_const; + + static void cryptd_queue_worker(struct work_struct *work); + +diff --git a/drivers/acpi/apei/cper.c b/drivers/acpi/apei/cper.c +index e6defd8..c26a225 100644 +--- a/drivers/acpi/apei/cper.c ++++ b/drivers/acpi/apei/cper.c +@@ -38,12 +38,12 @@ + */ + u64 cper_next_record_id(void) + { +- static atomic64_t seq; ++ static atomic64_unchecked_t seq; + +- if (!atomic64_read(&seq)) +- atomic64_set(&seq, ((u64)get_seconds()) << 32); ++ if (!atomic64_read_unchecked(&seq)) ++ atomic64_set_unchecked(&seq, ((u64)get_seconds()) << 32); + +- return atomic64_inc_return(&seq); ++ return atomic64_inc_return_unchecked(&seq); + } + EXPORT_SYMBOL_GPL(cper_next_record_id); + +diff --git a/drivers/acpi/ec_sys.c b/drivers/acpi/ec_sys.c +index 7586544..636a2f0 100644 +--- a/drivers/acpi/ec_sys.c ++++ b/drivers/acpi/ec_sys.c +@@ -12,6 +12,7 @@ + #include <linux/acpi.h> + #include <linux/debugfs.h> + #include <linux/module.h> ++#include <linux/uaccess.h> + #include "internal.h" + + MODULE_AUTHOR("Thomas Renninger <trenn@suse.de>"); +@@ -34,7 +35,7 @@ static ssize_t acpi_ec_read_io(struct file *f, char __user *buf, + * struct acpi_ec *ec = ((struct seq_file *)f->private_data)->private; + */ + unsigned int size = EC_SPACE_SIZE; +- u8 *data = (u8 *) buf; ++ u8 data; + loff_t init_off = *off; + int err = 0; + +@@ -47,9 +48,11 @@ static ssize_t acpi_ec_read_io(struct file *f, char __user *buf, + size = count; + + while (size) { +- err = ec_read(*off, &data[*off - init_off]); ++ err = ec_read(*off, &data); + if (err) + return err; ++ if (put_user(data, &buf[*off - init_off])) ++ return -EFAULT; + *off += 1; + size--; + } +@@ -65,7 +68,6 @@ static ssize_t acpi_ec_write_io(struct file *f, const char __user *buf, + + unsigned int size = count; + loff_t init_off = *off; +- u8 *data = (u8 *) buf; + int err = 0; + + if (*off >= EC_SPACE_SIZE) +@@ -76,7 +78,9 @@ static ssize_t acpi_ec_write_io(struct file *f, const char __user *buf, + } + + while (size) { +- u8 byte_write = data[*off - init_off]; ++ u8 byte_write; ++ if (get_user(byte_write, &buf[*off - init_off])) ++ return -EFAULT; + err = ec_write(*off, byte_write); + if (err) + return err; +diff --git a/drivers/acpi/proc.c b/drivers/acpi/proc.c +index 251c7b62..000462d 100644 +--- a/drivers/acpi/proc.c ++++ b/drivers/acpi/proc.c +@@ -343,19 +343,13 @@ acpi_system_write_wakeup_device(struct file *file, + size_t count, loff_t * ppos) + { + struct list_head *node, *next; +- char strbuf[5]; +- char str[5] = ""; +- unsigned int len = count; ++ char strbuf[5] = {0}; + +- if (len > 4) +- len = 4; +- if (len < 0) ++ if (count > 4) ++ count = 4; ++ if (copy_from_user(strbuf, buffer, count)) + return -EFAULT; +- +- if (copy_from_user(strbuf, buffer, len)) +- return -EFAULT; +- strbuf[len] = '\0'; +- sscanf(strbuf, "%s", str); ++ strbuf[count] = '\0'; + + mutex_lock(&acpi_device_lock); + list_for_each_safe(node, next, &acpi_wakeup_device_list) { +@@ -364,7 +358,7 @@ acpi_system_write_wakeup_device(struct file *file, + if (!dev->wakeup.flags.valid) + continue; + +- if (!strncmp(dev->pnp.bus_id, str, 4)) { ++ if (!strncmp(dev->pnp.bus_id, strbuf, 4)) { + if (device_can_wakeup(&dev->dev)) { + bool enable = !device_may_wakeup(&dev->dev); + device_set_wakeup_enable(&dev->dev, enable); +diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c +index 0734086..3ad3e4c 100644 +--- a/drivers/acpi/processor_driver.c ++++ b/drivers/acpi/processor_driver.c +@@ -556,7 +556,7 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device) + return 0; + #endif + +- BUG_ON((pr->id >= nr_cpu_ids) || (pr->id < 0)); ++ BUG_ON(pr->id >= nr_cpu_ids); + + /* + * Buggy BIOS check +diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c +index d31ee55..8363a8b 100644 +--- a/drivers/ata/libata-core.c ++++ b/drivers/ata/libata-core.c +@@ -4742,7 +4742,7 @@ void ata_qc_free(struct ata_queued_cmd *qc) + struct ata_port *ap; + unsigned int tag; + +- WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ ++ BUG_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ + ap = qc->ap; + + qc->flags = 0; +@@ -4758,7 +4758,7 @@ void __ata_qc_complete(struct ata_queued_cmd *qc) + struct ata_port *ap; + struct ata_link *link; + +- WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ ++ BUG_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ + WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE)); + ap = qc->ap; + link = qc->dev->link; +@@ -5822,6 +5822,7 @@ static void ata_finalize_port_ops(struct ata_port_operations *ops) + return; + + spin_lock(&lock); ++ pax_open_kernel(); + + for (cur = ops->inherits; cur; cur = cur->inherits) { + void **inherit = (void **)cur; +@@ -5835,8 +5836,9 @@ static void ata_finalize_port_ops(struct ata_port_operations *ops) + if (IS_ERR(*pp)) + *pp = NULL; + +- ops->inherits = NULL; ++ *(struct ata_port_operations **)&ops->inherits = NULL; + ++ pax_close_kernel(); + spin_unlock(&lock); + } + +diff --git a/drivers/ata/pata_arasan_cf.c b/drivers/ata/pata_arasan_cf.c +index 3239517..343b5f6 100644 +--- a/drivers/ata/pata_arasan_cf.c ++++ b/drivers/ata/pata_arasan_cf.c +@@ -862,7 +862,9 @@ static int __devinit arasan_cf_probe(struct platform_device *pdev) + /* Handle platform specific quirks */ + if (pdata->quirk) { + if (pdata->quirk & CF_BROKEN_PIO) { +- ap->ops->set_piomode = NULL; ++ pax_open_kernel(); ++ *(void **)&ap->ops->set_piomode = NULL; ++ pax_close_kernel(); + ap->pio_mask = 0; + } + if (pdata->quirk & CF_BROKEN_MWDMA) +diff --git a/drivers/atm/adummy.c b/drivers/atm/adummy.c +index f9b983a..887b9d8 100644 +--- a/drivers/atm/adummy.c ++++ b/drivers/atm/adummy.c +@@ -114,7 +114,7 @@ adummy_send(struct atm_vcc *vcc, struct sk_buff *skb) + vcc->pop(vcc, skb); + else + dev_kfree_skb_any(skb); +- atomic_inc(&vcc->stats->tx); ++ atomic_inc_unchecked(&vcc->stats->tx); + + return 0; + } +diff --git a/drivers/atm/ambassador.c b/drivers/atm/ambassador.c +index f8f41e0..1f987dd 100644 +--- a/drivers/atm/ambassador.c ++++ b/drivers/atm/ambassador.c +@@ -454,7 +454,7 @@ static void tx_complete (amb_dev * dev, tx_out * tx) { + PRINTD (DBG_FLOW|DBG_TX, "tx_complete %p %p", dev, tx); + + // VC layer stats +- atomic_inc(&ATM_SKB(skb)->vcc->stats->tx); ++ atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx); + + // free the descriptor + kfree (tx_descr); +@@ -495,7 +495,7 @@ static void rx_complete (amb_dev * dev, rx_out * rx) { + dump_skb ("<<<", vc, skb); + + // VC layer stats +- atomic_inc(&atm_vcc->stats->rx); ++ atomic_inc_unchecked(&atm_vcc->stats->rx); + __net_timestamp(skb); + // end of our responsibility + atm_vcc->push (atm_vcc, skb); +@@ -510,7 +510,7 @@ static void rx_complete (amb_dev * dev, rx_out * rx) { + } else { + PRINTK (KERN_INFO, "dropped over-size frame"); + // should we count this? +- atomic_inc(&atm_vcc->stats->rx_drop); ++ atomic_inc_unchecked(&atm_vcc->stats->rx_drop); + } + + } else { +@@ -1338,7 +1338,7 @@ static int amb_send (struct atm_vcc * atm_vcc, struct sk_buff * skb) { + } + + if (check_area (skb->data, skb->len)) { +- atomic_inc(&atm_vcc->stats->tx_err); ++ atomic_inc_unchecked(&atm_vcc->stats->tx_err); + return -ENOMEM; // ? + } + +diff --git a/drivers/atm/atmtcp.c b/drivers/atm/atmtcp.c +index b22d71c..d6e1049 100644 +--- a/drivers/atm/atmtcp.c ++++ b/drivers/atm/atmtcp.c +@@ -207,7 +207,7 @@ static int atmtcp_v_send(struct atm_vcc *vcc,struct sk_buff *skb) + if (vcc->pop) vcc->pop(vcc,skb); + else dev_kfree_skb(skb); + if (dev_data) return 0; +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + return -ENOLINK; + } + size = skb->len+sizeof(struct atmtcp_hdr); +@@ -215,7 +215,7 @@ static int atmtcp_v_send(struct atm_vcc *vcc,struct sk_buff *skb) + if (!new_skb) { + if (vcc->pop) vcc->pop(vcc,skb); + else dev_kfree_skb(skb); +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + return -ENOBUFS; + } + hdr = (void *) skb_put(new_skb,sizeof(struct atmtcp_hdr)); +@@ -226,8 +226,8 @@ static int atmtcp_v_send(struct atm_vcc *vcc,struct sk_buff *skb) + if (vcc->pop) vcc->pop(vcc,skb); + else dev_kfree_skb(skb); + out_vcc->push(out_vcc,new_skb); +- atomic_inc(&vcc->stats->tx); +- atomic_inc(&out_vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->tx); ++ atomic_inc_unchecked(&out_vcc->stats->rx); + return 0; + } + +@@ -301,7 +301,7 @@ static int atmtcp_c_send(struct atm_vcc *vcc,struct sk_buff *skb) + out_vcc = find_vcc(dev, ntohs(hdr->vpi), ntohs(hdr->vci)); + read_unlock(&vcc_sklist_lock); + if (!out_vcc) { +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + goto done; + } + skb_pull(skb,sizeof(struct atmtcp_hdr)); +@@ -313,8 +313,8 @@ static int atmtcp_c_send(struct atm_vcc *vcc,struct sk_buff *skb) + __net_timestamp(new_skb); + skb_copy_from_linear_data(skb, skb_put(new_skb, skb->len), skb->len); + out_vcc->push(out_vcc,new_skb); +- atomic_inc(&vcc->stats->tx); +- atomic_inc(&out_vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->tx); ++ atomic_inc_unchecked(&out_vcc->stats->rx); + done: + if (vcc->pop) vcc->pop(vcc,skb); + else dev_kfree_skb(skb); +diff --git a/drivers/atm/eni.c b/drivers/atm/eni.c +index 2059ee4..faf51c7 100644 +--- a/drivers/atm/eni.c ++++ b/drivers/atm/eni.c +@@ -522,7 +522,7 @@ static int rx_aal0(struct atm_vcc *vcc) + DPRINTK(DEV_LABEL "(itf %d): trashing empty cell\n", + vcc->dev->number); + length = 0; +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + } + else { + length = ATM_CELL_SIZE-1; /* no HEC */ +@@ -577,7 +577,7 @@ static int rx_aal5(struct atm_vcc *vcc) + size); + } + eff = length = 0; +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + } + else { + size = (descr & MID_RED_COUNT)*(ATM_CELL_PAYLOAD >> 2); +@@ -594,7 +594,7 @@ static int rx_aal5(struct atm_vcc *vcc) + "(VCI=%d,length=%ld,size=%ld (descr 0x%lx))\n", + vcc->dev->number,vcc->vci,length,size << 2,descr); + length = eff = 0; +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + } + } + skb = eff ? atm_alloc_charge(vcc,eff << 2,GFP_ATOMIC) : NULL; +@@ -767,7 +767,7 @@ rx_dequeued++; + vcc->push(vcc,skb); + pushed++; + } +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + } + wake_up(&eni_dev->rx_wait); + } +@@ -1227,7 +1227,7 @@ static void dequeue_tx(struct atm_dev *dev) + PCI_DMA_TODEVICE); + if (vcc->pop) vcc->pop(vcc,skb); + else dev_kfree_skb_irq(skb); +- atomic_inc(&vcc->stats->tx); ++ atomic_inc_unchecked(&vcc->stats->tx); + wake_up(&eni_dev->tx_wait); + dma_complete++; + } +@@ -1567,7 +1567,7 @@ tx_complete++; + /*--------------------------------- entries ---------------------------------*/ + + +-static const char *media_name[] __devinitdata = { ++static const char *media_name[] __devinitconst = { + "MMF", "SMF", "MMF", "03?", /* 0- 3 */ + "UTP", "05?", "06?", "07?", /* 4- 7 */ + "TAXI","09?", "10?", "11?", /* 8-11 */ +diff --git a/drivers/atm/firestream.c b/drivers/atm/firestream.c +index 86fed1b..6dc4721 100644 +--- a/drivers/atm/firestream.c ++++ b/drivers/atm/firestream.c +@@ -749,7 +749,7 @@ static void process_txdone_queue (struct fs_dev *dev, struct queue *q) + } + } + +- atomic_inc(&ATM_SKB(skb)->vcc->stats->tx); ++ atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx); + + fs_dprintk (FS_DEBUG_TXMEM, "i"); + fs_dprintk (FS_DEBUG_ALLOC, "Free t-skb: %p\n", skb); +@@ -816,7 +816,7 @@ static void process_incoming (struct fs_dev *dev, struct queue *q) + #endif + skb_put (skb, qe->p1 & 0xffff); + ATM_SKB(skb)->vcc = atm_vcc; +- atomic_inc(&atm_vcc->stats->rx); ++ atomic_inc_unchecked(&atm_vcc->stats->rx); + __net_timestamp(skb); + fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p (pushed)\n", skb); + atm_vcc->push (atm_vcc, skb); +@@ -837,12 +837,12 @@ static void process_incoming (struct fs_dev *dev, struct queue *q) + kfree (pe); + } + if (atm_vcc) +- atomic_inc(&atm_vcc->stats->rx_drop); ++ atomic_inc_unchecked(&atm_vcc->stats->rx_drop); + break; + case 0x1f: /* Reassembly abort: no buffers. */ + /* Silently increment error counter. */ + if (atm_vcc) +- atomic_inc(&atm_vcc->stats->rx_drop); ++ atomic_inc_unchecked(&atm_vcc->stats->rx_drop); + break; + default: /* Hmm. Haven't written the code to handle the others yet... -- REW */ + printk (KERN_WARNING "Don't know what to do with RX status %x: %s.\n", +diff --git a/drivers/atm/fore200e.c b/drivers/atm/fore200e.c +index 361f5ae..7fc552d 100644 +--- a/drivers/atm/fore200e.c ++++ b/drivers/atm/fore200e.c +@@ -933,9 +933,9 @@ fore200e_tx_irq(struct fore200e* fore200e) + #endif + /* check error condition */ + if (*entry->status & STATUS_ERROR) +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + else +- atomic_inc(&vcc->stats->tx); ++ atomic_inc_unchecked(&vcc->stats->tx); + } + } + +@@ -1084,7 +1084,7 @@ fore200e_push_rpd(struct fore200e* fore200e, struct atm_vcc* vcc, struct rpd* rp + if (skb == NULL) { + DPRINTK(2, "unable to alloc new skb, rx PDU length = %d\n", pdu_len); + +- atomic_inc(&vcc->stats->rx_drop); ++ atomic_inc_unchecked(&vcc->stats->rx_drop); + return -ENOMEM; + } + +@@ -1127,14 +1127,14 @@ fore200e_push_rpd(struct fore200e* fore200e, struct atm_vcc* vcc, struct rpd* rp + + dev_kfree_skb_any(skb); + +- atomic_inc(&vcc->stats->rx_drop); ++ atomic_inc_unchecked(&vcc->stats->rx_drop); + return -ENOMEM; + } + + ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0); + + vcc->push(vcc, skb); +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + + ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0); + +@@ -1212,7 +1212,7 @@ fore200e_rx_irq(struct fore200e* fore200e) + DPRINTK(2, "damaged PDU on %d.%d.%d\n", + fore200e->atm_dev->number, + entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci); +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + } + } + +@@ -1657,7 +1657,7 @@ fore200e_send(struct atm_vcc *vcc, struct sk_buff *skb) + goto retry_here; + } + +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + + fore200e->tx_sat++; + DPRINTK(2, "tx queue of device %s is saturated, PDU dropped - heartbeat is %08x\n", +diff --git a/drivers/atm/he.c b/drivers/atm/he.c +index b182c2f..1c6fa8a 100644 +--- a/drivers/atm/he.c ++++ b/drivers/atm/he.c +@@ -1709,7 +1709,7 @@ he_service_rbrq(struct he_dev *he_dev, int group) + + if (RBRQ_HBUF_ERR(he_dev->rbrq_head)) { + hprintk("HBUF_ERR! (cid 0x%x)\n", cid); +- atomic_inc(&vcc->stats->rx_drop); ++ atomic_inc_unchecked(&vcc->stats->rx_drop); + goto return_host_buffers; + } + +@@ -1736,7 +1736,7 @@ he_service_rbrq(struct he_dev *he_dev, int group) + RBRQ_LEN_ERR(he_dev->rbrq_head) + ? "LEN_ERR" : "", + vcc->vpi, vcc->vci); +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + goto return_host_buffers; + } + +@@ -1788,7 +1788,7 @@ he_service_rbrq(struct he_dev *he_dev, int group) + vcc->push(vcc, skb); + spin_lock(&he_dev->global_lock); + +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + + return_host_buffers: + ++pdus_assembled; +@@ -2114,7 +2114,7 @@ __enqueue_tpd(struct he_dev *he_dev, struct he_tpd *tpd, unsigned cid) + tpd->vcc->pop(tpd->vcc, tpd->skb); + else + dev_kfree_skb_any(tpd->skb); +- atomic_inc(&tpd->vcc->stats->tx_err); ++ atomic_inc_unchecked(&tpd->vcc->stats->tx_err); + } + pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status)); + return; +@@ -2526,7 +2526,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb) + vcc->pop(vcc, skb); + else + dev_kfree_skb_any(skb); +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + return -EINVAL; + } + +@@ -2537,7 +2537,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb) + vcc->pop(vcc, skb); + else + dev_kfree_skb_any(skb); +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + return -EINVAL; + } + #endif +@@ -2549,7 +2549,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb) + vcc->pop(vcc, skb); + else + dev_kfree_skb_any(skb); +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + spin_unlock_irqrestore(&he_dev->global_lock, flags); + return -ENOMEM; + } +@@ -2591,7 +2591,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb) + vcc->pop(vcc, skb); + else + dev_kfree_skb_any(skb); +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + spin_unlock_irqrestore(&he_dev->global_lock, flags); + return -ENOMEM; + } +@@ -2622,7 +2622,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb) + __enqueue_tpd(he_dev, tpd, cid); + spin_unlock_irqrestore(&he_dev->global_lock, flags); + +- atomic_inc(&vcc->stats->tx); ++ atomic_inc_unchecked(&vcc->stats->tx); + + return 0; + } +diff --git a/drivers/atm/horizon.c b/drivers/atm/horizon.c +index 75fd691..2d20b14 100644 +--- a/drivers/atm/horizon.c ++++ b/drivers/atm/horizon.c +@@ -1034,7 +1034,7 @@ static void rx_schedule (hrz_dev * dev, int irq) { + { + struct atm_vcc * vcc = ATM_SKB(skb)->vcc; + // VC layer stats +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + __net_timestamp(skb); + // end of our responsibility + vcc->push (vcc, skb); +@@ -1186,7 +1186,7 @@ static void tx_schedule (hrz_dev * const dev, int irq) { + dev->tx_iovec = NULL; + + // VC layer stats +- atomic_inc(&ATM_SKB(skb)->vcc->stats->tx); ++ atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx); + + // free the skb + hrz_kfree_skb (skb); +diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c +index 1c05212..c28e200 100644 +--- a/drivers/atm/idt77252.c ++++ b/drivers/atm/idt77252.c +@@ -812,7 +812,7 @@ drain_scq(struct idt77252_dev *card, struct vc_map *vc) + else + dev_kfree_skb(skb); + +- atomic_inc(&vcc->stats->tx); ++ atomic_inc_unchecked(&vcc->stats->tx); + } + + atomic_dec(&scq->used); +@@ -1075,13 +1075,13 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) + if ((sb = dev_alloc_skb(64)) == NULL) { + printk("%s: Can't allocate buffers for aal0.\n", + card->name); +- atomic_add(i, &vcc->stats->rx_drop); ++ atomic_add_unchecked(i, &vcc->stats->rx_drop); + break; + } + if (!atm_charge(vcc, sb->truesize)) { + RXPRINTK("%s: atm_charge() dropped aal0 packets.\n", + card->name); +- atomic_add(i - 1, &vcc->stats->rx_drop); ++ atomic_add_unchecked(i - 1, &vcc->stats->rx_drop); + dev_kfree_skb(sb); + break; + } +@@ -1098,7 +1098,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) + ATM_SKB(sb)->vcc = vcc; + __net_timestamp(sb); + vcc->push(vcc, sb); +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + + cell += ATM_CELL_PAYLOAD; + } +@@ -1135,13 +1135,13 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) + "(CDC: %08x)\n", + card->name, len, rpp->len, readl(SAR_REG_CDC)); + recycle_rx_pool_skb(card, rpp); +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + return; + } + if (stat & SAR_RSQE_CRC) { + RXPRINTK("%s: AAL5 CRC error.\n", card->name); + recycle_rx_pool_skb(card, rpp); +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + return; + } + if (skb_queue_len(&rpp->queue) > 1) { +@@ -1152,7 +1152,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) + RXPRINTK("%s: Can't alloc RX skb.\n", + card->name); + recycle_rx_pool_skb(card, rpp); +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + return; + } + if (!atm_charge(vcc, skb->truesize)) { +@@ -1171,7 +1171,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) + __net_timestamp(skb); + + vcc->push(vcc, skb); +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + + return; + } +@@ -1193,7 +1193,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) + __net_timestamp(skb); + + vcc->push(vcc, skb); +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + + if (skb->truesize > SAR_FB_SIZE_3) + add_rx_skb(card, 3, SAR_FB_SIZE_3, 1); +@@ -1304,14 +1304,14 @@ idt77252_rx_raw(struct idt77252_dev *card) + if (vcc->qos.aal != ATM_AAL0) { + RPRINTK("%s: raw cell for non AAL0 vc %u.%u\n", + card->name, vpi, vci); +- atomic_inc(&vcc->stats->rx_drop); ++ atomic_inc_unchecked(&vcc->stats->rx_drop); + goto drop; + } + + if ((sb = dev_alloc_skb(64)) == NULL) { + printk("%s: Can't allocate buffers for AAL0.\n", + card->name); +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + goto drop; + } + +@@ -1330,7 +1330,7 @@ idt77252_rx_raw(struct idt77252_dev *card) + ATM_SKB(sb)->vcc = vcc; + __net_timestamp(sb); + vcc->push(vcc, sb); +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + + drop: + skb_pull(queue, 64); +@@ -1955,13 +1955,13 @@ idt77252_send_skb(struct atm_vcc *vcc, struct sk_buff *skb, int oam) + + if (vc == NULL) { + printk("%s: NULL connection in send().\n", card->name); +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + dev_kfree_skb(skb); + return -EINVAL; + } + if (!test_bit(VCF_TX, &vc->flags)) { + printk("%s: Trying to transmit on a non-tx VC.\n", card->name); +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + dev_kfree_skb(skb); + return -EINVAL; + } +@@ -1973,14 +1973,14 @@ idt77252_send_skb(struct atm_vcc *vcc, struct sk_buff *skb, int oam) + break; + default: + printk("%s: Unsupported AAL: %d\n", card->name, vcc->qos.aal); +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + dev_kfree_skb(skb); + return -EINVAL; + } + + if (skb_shinfo(skb)->nr_frags != 0) { + printk("%s: No scatter-gather yet.\n", card->name); +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + dev_kfree_skb(skb); + return -EINVAL; + } +@@ -1988,7 +1988,7 @@ idt77252_send_skb(struct atm_vcc *vcc, struct sk_buff *skb, int oam) + + err = queue_skb(card, vc, skb, oam); + if (err) { +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + dev_kfree_skb(skb); + return err; + } +@@ -2011,7 +2011,7 @@ idt77252_send_oam(struct atm_vcc *vcc, void *cell, int flags) + skb = dev_alloc_skb(64); + if (!skb) { + printk("%s: Out of memory in send_oam().\n", card->name); +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + return -ENOMEM; + } + atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); +diff --git a/drivers/atm/iphase.c b/drivers/atm/iphase.c +index d438601..8b98495 100644 +--- a/drivers/atm/iphase.c ++++ b/drivers/atm/iphase.c +@@ -1145,7 +1145,7 @@ static int rx_pkt(struct atm_dev *dev) + status = (u_short) (buf_desc_ptr->desc_mode); + if (status & (RX_CER | RX_PTE | RX_OFL)) + { +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + IF_ERR(printk("IA: bad packet, dropping it");) + if (status & RX_CER) { + IF_ERR(printk(" cause: packet CRC error\n");) +@@ -1168,7 +1168,7 @@ static int rx_pkt(struct atm_dev *dev) + len = dma_addr - buf_addr; + if (len > iadev->rx_buf_sz) { + printk("Over %d bytes sdu received, dropped!!!\n", iadev->rx_buf_sz); +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + goto out_free_desc; + } + +@@ -1318,7 +1318,7 @@ static void rx_dle_intr(struct atm_dev *dev) + ia_vcc = INPH_IA_VCC(vcc); + if (ia_vcc == NULL) + { +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + atm_return(vcc, skb->truesize); + dev_kfree_skb_any(skb); + goto INCR_DLE; +@@ -1330,7 +1330,7 @@ static void rx_dle_intr(struct atm_dev *dev) + if ((length > iadev->rx_buf_sz) || (length > + (skb->len - sizeof(struct cpcs_trailer)))) + { +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + IF_ERR(printk("rx_dle_intr: Bad AAL5 trailer %d (skb len %d)", + length, skb->len);) + atm_return(vcc, skb->truesize); +@@ -1346,7 +1346,7 @@ static void rx_dle_intr(struct atm_dev *dev) + + IF_RX(printk("rx_dle_intr: skb push");) + vcc->push(vcc,skb); +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + iadev->rx_pkt_cnt++; + } + INCR_DLE: +@@ -2826,15 +2826,15 @@ static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg) + { + struct k_sonet_stats *stats; + stats = &PRIV(_ia_dev[board])->sonet_stats; +- printk("section_bip: %d\n", atomic_read(&stats->section_bip)); +- printk("line_bip : %d\n", atomic_read(&stats->line_bip)); +- printk("path_bip : %d\n", atomic_read(&stats->path_bip)); +- printk("line_febe : %d\n", atomic_read(&stats->line_febe)); +- printk("path_febe : %d\n", atomic_read(&stats->path_febe)); +- printk("corr_hcs : %d\n", atomic_read(&stats->corr_hcs)); +- printk("uncorr_hcs : %d\n", atomic_read(&stats->uncorr_hcs)); +- printk("tx_cells : %d\n", atomic_read(&stats->tx_cells)); +- printk("rx_cells : %d\n", atomic_read(&stats->rx_cells)); ++ printk("section_bip: %d\n", atomic_read_unchecked(&stats->section_bip)); ++ printk("line_bip : %d\n", atomic_read_unchecked(&stats->line_bip)); ++ printk("path_bip : %d\n", atomic_read_unchecked(&stats->path_bip)); ++ printk("line_febe : %d\n", atomic_read_unchecked(&stats->line_febe)); ++ printk("path_febe : %d\n", atomic_read_unchecked(&stats->path_febe)); ++ printk("corr_hcs : %d\n", atomic_read_unchecked(&stats->corr_hcs)); ++ printk("uncorr_hcs : %d\n", atomic_read_unchecked(&stats->uncorr_hcs)); ++ printk("tx_cells : %d\n", atomic_read_unchecked(&stats->tx_cells)); ++ printk("rx_cells : %d\n", atomic_read_unchecked(&stats->rx_cells)); + } + ia_cmds.status = 0; + break; +@@ -2939,7 +2939,7 @@ static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) { + if ((desc == 0) || (desc > iadev->num_tx_desc)) + { + IF_ERR(printk(DEV_LABEL "invalid desc for send: %d\n", desc);) +- atomic_inc(&vcc->stats->tx); ++ atomic_inc_unchecked(&vcc->stats->tx); + if (vcc->pop) + vcc->pop(vcc, skb); + else +@@ -3044,14 +3044,14 @@ static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) { + ATM_DESC(skb) = vcc->vci; + skb_queue_tail(&iadev->tx_dma_q, skb); + +- atomic_inc(&vcc->stats->tx); ++ atomic_inc_unchecked(&vcc->stats->tx); + iadev->tx_pkt_cnt++; + /* Increment transaction counter */ + writel(2, iadev->dma+IPHASE5575_TX_COUNTER); + + #if 0 + /* add flow control logic */ +- if (atomic_read(&vcc->stats->tx) % 20 == 0) { ++ if (atomic_read_unchecked(&vcc->stats->tx) % 20 == 0) { + if (iavcc->vc_desc_cnt > 10) { + vcc->tx_quota = vcc->tx_quota * 3 / 4; + printk("Tx1: vcc->tx_quota = %d \n", (u32)vcc->tx_quota ); +diff --git a/drivers/atm/lanai.c b/drivers/atm/lanai.c +index 68c7588..7036683 100644 +--- a/drivers/atm/lanai.c ++++ b/drivers/atm/lanai.c +@@ -1303,7 +1303,7 @@ static void lanai_send_one_aal5(struct lanai_dev *lanai, + vcc_tx_add_aal5_trailer(lvcc, skb->len, 0, 0); + lanai_endtx(lanai, lvcc); + lanai_free_skb(lvcc->tx.atmvcc, skb); +- atomic_inc(&lvcc->tx.atmvcc->stats->tx); ++ atomic_inc_unchecked(&lvcc->tx.atmvcc->stats->tx); + } + + /* Try to fill the buffer - don't call unless there is backlog */ +@@ -1426,7 +1426,7 @@ static void vcc_rx_aal5(struct lanai_vcc *lvcc, int endptr) + ATM_SKB(skb)->vcc = lvcc->rx.atmvcc; + __net_timestamp(skb); + lvcc->rx.atmvcc->push(lvcc->rx.atmvcc, skb); +- atomic_inc(&lvcc->rx.atmvcc->stats->rx); ++ atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx); + out: + lvcc->rx.buf.ptr = end; + cardvcc_write(lvcc, endptr, vcc_rxreadptr); +@@ -1667,7 +1667,7 @@ static int handle_service(struct lanai_dev *lanai, u32 s) + DPRINTK("(itf %d) got RX service entry 0x%X for non-AAL5 " + "vcc %d\n", lanai->number, (unsigned int) s, vci); + lanai->stats.service_rxnotaal5++; +- atomic_inc(&lvcc->rx.atmvcc->stats->rx_err); ++ atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err); + return 0; + } + if (likely(!(s & (SERVICE_TRASH | SERVICE_STREAM | SERVICE_CRCERR)))) { +@@ -1679,7 +1679,7 @@ static int handle_service(struct lanai_dev *lanai, u32 s) + int bytes; + read_unlock(&vcc_sklist_lock); + DPRINTK("got trashed rx pdu on vci %d\n", vci); +- atomic_inc(&lvcc->rx.atmvcc->stats->rx_err); ++ atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err); + lvcc->stats.x.aal5.service_trash++; + bytes = (SERVICE_GET_END(s) * 16) - + (((unsigned long) lvcc->rx.buf.ptr) - +@@ -1691,7 +1691,7 @@ static int handle_service(struct lanai_dev *lanai, u32 s) + } + if (s & SERVICE_STREAM) { + read_unlock(&vcc_sklist_lock); +- atomic_inc(&lvcc->rx.atmvcc->stats->rx_err); ++ atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err); + lvcc->stats.x.aal5.service_stream++; + printk(KERN_ERR DEV_LABEL "(itf %d): Got AAL5 stream " + "PDU on VCI %d!\n", lanai->number, vci); +@@ -1699,7 +1699,7 @@ static int handle_service(struct lanai_dev *lanai, u32 s) + return 0; + } + DPRINTK("got rx crc error on vci %d\n", vci); +- atomic_inc(&lvcc->rx.atmvcc->stats->rx_err); ++ atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err); + lvcc->stats.x.aal5.service_rxcrc++; + lvcc->rx.buf.ptr = &lvcc->rx.buf.start[SERVICE_GET_END(s) * 4]; + cardvcc_write(lvcc, SERVICE_GET_END(s), vcc_rxreadptr); +diff --git a/drivers/atm/nicstar.c b/drivers/atm/nicstar.c +index 1c70c45..300718d 100644 +--- a/drivers/atm/nicstar.c ++++ b/drivers/atm/nicstar.c +@@ -1654,7 +1654,7 @@ static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb) + if ((vc = (vc_map *) vcc->dev_data) == NULL) { + printk("nicstar%d: vcc->dev_data == NULL on ns_send().\n", + card->index); +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + dev_kfree_skb_any(skb); + return -EINVAL; + } +@@ -1662,7 +1662,7 @@ static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb) + if (!vc->tx) { + printk("nicstar%d: Trying to transmit on a non-tx VC.\n", + card->index); +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + dev_kfree_skb_any(skb); + return -EINVAL; + } +@@ -1670,14 +1670,14 @@ static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb) + if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) { + printk("nicstar%d: Only AAL0 and AAL5 are supported.\n", + card->index); +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + dev_kfree_skb_any(skb); + return -EINVAL; + } + + if (skb_shinfo(skb)->nr_frags != 0) { + printk("nicstar%d: No scatter-gather yet.\n", card->index); +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + dev_kfree_skb_any(skb); + return -EINVAL; + } +@@ -1725,11 +1725,11 @@ static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb) + } + + if (push_scqe(card, vc, scq, &scqe, skb) != 0) { +- atomic_inc(&vcc->stats->tx_err); ++ atomic_inc_unchecked(&vcc->stats->tx_err); + dev_kfree_skb_any(skb); + return -EIO; + } +- atomic_inc(&vcc->stats->tx); ++ atomic_inc_unchecked(&vcc->stats->tx); + + return 0; + } +@@ -2046,14 +2046,14 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) + printk + ("nicstar%d: Can't allocate buffers for aal0.\n", + card->index); +- atomic_add(i, &vcc->stats->rx_drop); ++ atomic_add_unchecked(i, &vcc->stats->rx_drop); + break; + } + if (!atm_charge(vcc, sb->truesize)) { + RXPRINTK + ("nicstar%d: atm_charge() dropped aal0 packets.\n", + card->index); +- atomic_add(i - 1, &vcc->stats->rx_drop); /* already increased by 1 */ ++ atomic_add_unchecked(i - 1, &vcc->stats->rx_drop); /* already increased by 1 */ + dev_kfree_skb_any(sb); + break; + } +@@ -2068,7 +2068,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) + ATM_SKB(sb)->vcc = vcc; + __net_timestamp(sb); + vcc->push(vcc, sb); +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + cell += ATM_CELL_PAYLOAD; + } + +@@ -2085,7 +2085,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) + if (iovb == NULL) { + printk("nicstar%d: Out of iovec buffers.\n", + card->index); +- atomic_inc(&vcc->stats->rx_drop); ++ atomic_inc_unchecked(&vcc->stats->rx_drop); + recycle_rx_buf(card, skb); + return; + } +@@ -2109,7 +2109,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) + small or large buffer itself. */ + } else if (NS_PRV_IOVCNT(iovb) >= NS_MAX_IOVECS) { + printk("nicstar%d: received too big AAL5 SDU.\n", card->index); +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, + NS_MAX_IOVECS); + NS_PRV_IOVCNT(iovb) = 0; +@@ -2129,7 +2129,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) + ("nicstar%d: Expected a small buffer, and this is not one.\n", + card->index); + which_list(card, skb); +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + recycle_rx_buf(card, skb); + vc->rx_iov = NULL; + recycle_iov_buf(card, iovb); +@@ -2142,7 +2142,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) + ("nicstar%d: Expected a large buffer, and this is not one.\n", + card->index); + which_list(card, skb); +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, + NS_PRV_IOVCNT(iovb)); + vc->rx_iov = NULL; +@@ -2165,7 +2165,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) + printk(" - PDU size mismatch.\n"); + else + printk(".\n"); +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, + NS_PRV_IOVCNT(iovb)); + vc->rx_iov = NULL; +@@ -2179,7 +2179,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) + /* skb points to a small buffer */ + if (!atm_charge(vcc, skb->truesize)) { + push_rxbufs(card, skb); +- atomic_inc(&vcc->stats->rx_drop); ++ atomic_inc_unchecked(&vcc->stats->rx_drop); + } else { + skb_put(skb, len); + dequeue_sm_buf(card, skb); +@@ -2189,7 +2189,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) + ATM_SKB(skb)->vcc = vcc; + __net_timestamp(skb); + vcc->push(vcc, skb); +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + } + } else if (NS_PRV_IOVCNT(iovb) == 2) { /* One small plus one large buffer */ + struct sk_buff *sb; +@@ -2200,7 +2200,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) + if (len <= NS_SMBUFSIZE) { + if (!atm_charge(vcc, sb->truesize)) { + push_rxbufs(card, sb); +- atomic_inc(&vcc->stats->rx_drop); ++ atomic_inc_unchecked(&vcc->stats->rx_drop); + } else { + skb_put(sb, len); + dequeue_sm_buf(card, sb); +@@ -2210,7 +2210,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) + ATM_SKB(sb)->vcc = vcc; + __net_timestamp(sb); + vcc->push(vcc, sb); +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + } + + push_rxbufs(card, skb); +@@ -2219,7 +2219,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) + + if (!atm_charge(vcc, skb->truesize)) { + push_rxbufs(card, skb); +- atomic_inc(&vcc->stats->rx_drop); ++ atomic_inc_unchecked(&vcc->stats->rx_drop); + } else { + dequeue_lg_buf(card, skb); + #ifdef NS_USE_DESTRUCTORS +@@ -2232,7 +2232,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) + ATM_SKB(skb)->vcc = vcc; + __net_timestamp(skb); + vcc->push(vcc, skb); +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + } + + push_rxbufs(card, sb); +@@ -2253,7 +2253,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) + printk + ("nicstar%d: Out of huge buffers.\n", + card->index); +- atomic_inc(&vcc->stats->rx_drop); ++ atomic_inc_unchecked(&vcc->stats->rx_drop); + recycle_iovec_rx_bufs(card, + (struct iovec *) + iovb->data, +@@ -2304,7 +2304,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) + card->hbpool.count++; + } else + dev_kfree_skb_any(hb); +- atomic_inc(&vcc->stats->rx_drop); ++ atomic_inc_unchecked(&vcc->stats->rx_drop); + } else { + /* Copy the small buffer to the huge buffer */ + sb = (struct sk_buff *)iov->iov_base; +@@ -2341,7 +2341,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) + #endif /* NS_USE_DESTRUCTORS */ + __net_timestamp(hb); + vcc->push(vcc, hb); +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + } + } + +diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c +index 9851093..adb2b1e 100644 +--- a/drivers/atm/solos-pci.c ++++ b/drivers/atm/solos-pci.c +@@ -714,7 +714,7 @@ void solos_bh(unsigned long card_arg) + } + atm_charge(vcc, skb->truesize); + vcc->push(vcc, skb); +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + break; + + case PKT_STATUS: +@@ -1009,7 +1009,7 @@ static uint32_t fpga_tx(struct solos_card *card) + vcc = SKB_CB(oldskb)->vcc; + + if (vcc) { +- atomic_inc(&vcc->stats->tx); ++ atomic_inc_unchecked(&vcc->stats->tx); + solos_pop(vcc, oldskb); + } else + dev_kfree_skb_irq(oldskb); +diff --git a/drivers/atm/suni.c b/drivers/atm/suni.c +index 0215934..ce9f5b1 100644 +--- a/drivers/atm/suni.c ++++ b/drivers/atm/suni.c +@@ -49,8 +49,8 @@ static DEFINE_SPINLOCK(sunis_lock); + + + #define ADD_LIMITED(s,v) \ +- atomic_add((v),&stats->s); \ +- if (atomic_read(&stats->s) < 0) atomic_set(&stats->s,INT_MAX); ++ atomic_add_unchecked((v),&stats->s); \ ++ if (atomic_read_unchecked(&stats->s) < 0) atomic_set_unchecked(&stats->s,INT_MAX); + + + static void suni_hz(unsigned long from_timer) +diff --git a/drivers/atm/uPD98402.c b/drivers/atm/uPD98402.c +index 5120a96..e2572bd 100644 +--- a/drivers/atm/uPD98402.c ++++ b/drivers/atm/uPD98402.c +@@ -42,7 +42,7 @@ static int fetch_stats(struct atm_dev *dev,struct sonet_stats __user *arg,int ze + struct sonet_stats tmp; + int error = 0; + +- atomic_add(GET(HECCT),&PRIV(dev)->sonet_stats.uncorr_hcs); ++ atomic_add_unchecked(GET(HECCT),&PRIV(dev)->sonet_stats.uncorr_hcs); + sonet_copy_stats(&PRIV(dev)->sonet_stats,&tmp); + if (arg) error = copy_to_user(arg,&tmp,sizeof(tmp)); + if (zero && !error) { +@@ -161,9 +161,9 @@ static int uPD98402_ioctl(struct atm_dev *dev,unsigned int cmd,void __user *arg) + + + #define ADD_LIMITED(s,v) \ +- { atomic_add(GET(v),&PRIV(dev)->sonet_stats.s); \ +- if (atomic_read(&PRIV(dev)->sonet_stats.s) < 0) \ +- atomic_set(&PRIV(dev)->sonet_stats.s,INT_MAX); } ++ { atomic_add_unchecked(GET(v),&PRIV(dev)->sonet_stats.s); \ ++ if (atomic_read_unchecked(&PRIV(dev)->sonet_stats.s) < 0) \ ++ atomic_set_unchecked(&PRIV(dev)->sonet_stats.s,INT_MAX); } + + + static void stat_event(struct atm_dev *dev) +@@ -194,7 +194,7 @@ static void uPD98402_int(struct atm_dev *dev) + if (reason & uPD98402_INT_PFM) stat_event(dev); + if (reason & uPD98402_INT_PCO) { + (void) GET(PCOCR); /* clear interrupt cause */ +- atomic_add(GET(HECCT), ++ atomic_add_unchecked(GET(HECCT), + &PRIV(dev)->sonet_stats.uncorr_hcs); + } + if ((reason & uPD98402_INT_RFO) && +@@ -222,9 +222,9 @@ static int uPD98402_start(struct atm_dev *dev) + PUT(~(uPD98402_INT_PFM | uPD98402_INT_ALM | uPD98402_INT_RFO | + uPD98402_INT_LOS),PIMR); /* enable them */ + (void) fetch_stats(dev,NULL,1); /* clear kernel counters */ +- atomic_set(&PRIV(dev)->sonet_stats.corr_hcs,-1); +- atomic_set(&PRIV(dev)->sonet_stats.tx_cells,-1); +- atomic_set(&PRIV(dev)->sonet_stats.rx_cells,-1); ++ atomic_set_unchecked(&PRIV(dev)->sonet_stats.corr_hcs,-1); ++ atomic_set_unchecked(&PRIV(dev)->sonet_stats.tx_cells,-1); ++ atomic_set_unchecked(&PRIV(dev)->sonet_stats.rx_cells,-1); + return 0; + } + +diff --git a/drivers/atm/zatm.c b/drivers/atm/zatm.c +index abe4e20..83c4727 100644 +--- a/drivers/atm/zatm.c ++++ b/drivers/atm/zatm.c +@@ -459,7 +459,7 @@ printk("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]); + } + if (!size) { + dev_kfree_skb_irq(skb); +- if (vcc) atomic_inc(&vcc->stats->rx_err); ++ if (vcc) atomic_inc_unchecked(&vcc->stats->rx_err); + continue; + } + if (!atm_charge(vcc,skb->truesize)) { +@@ -469,7 +469,7 @@ printk("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]); + skb->len = size; + ATM_SKB(skb)->vcc = vcc; + vcc->push(vcc,skb); +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + } + zout(pos & 0xffff,MTA(mbx)); + #if 0 /* probably a stupid idea */ +@@ -733,7 +733,7 @@ if (*ZATM_PRV_DSC(skb) != (uPD98401_TXPD_V | uPD98401_TXPD_DP | + skb_queue_head(&zatm_vcc->backlog,skb); + break; + } +- atomic_inc(&vcc->stats->tx); ++ atomic_inc_unchecked(&vcc->stats->tx); + wake_up(&zatm_vcc->tx_wait); + } + +diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c +index 8493536..31adee0 100644 +--- a/drivers/base/devtmpfs.c ++++ b/drivers/base/devtmpfs.c +@@ -368,7 +368,7 @@ int devtmpfs_mount(const char *mntdir) + if (!thread) + return 0; + +- err = sys_mount("devtmpfs", (char *)mntdir, "devtmpfs", MS_SILENT, NULL); ++ err = sys_mount((char __force_user *)"devtmpfs", (char __force_user *)mntdir, (char __force_user *)"devtmpfs", MS_SILENT, NULL); + if (err) + printk(KERN_INFO "devtmpfs: error mounting %i\n", err); + else +diff --git a/drivers/base/node.c b/drivers/base/node.c +index 90aa2a1..af1a177 100644 +--- a/drivers/base/node.c ++++ b/drivers/base/node.c +@@ -592,11 +592,9 @@ static ssize_t print_nodes_state(enum node_states state, char *buf) + { + int n; + +- n = nodelist_scnprintf(buf, PAGE_SIZE, node_states[state]); +- if (n > 0 && PAGE_SIZE > n + 1) { +- *(buf + n++) = '\n'; +- *(buf + n++) = '\0'; +- } ++ n = nodelist_scnprintf(buf, PAGE_SIZE-2, node_states[state]); ++ buf[n++] = '\n'; ++ buf[n] = '\0'; + return n; + } + +diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c +index 2a3e581..3d6a73f 100644 +--- a/drivers/base/power/wakeup.c ++++ b/drivers/base/power/wakeup.c +@@ -30,14 +30,14 @@ bool events_check_enabled; + * They need to be modified together atomically, so it's better to use one + * atomic variable to hold them both. + */ +-static atomic_t combined_event_count = ATOMIC_INIT(0); ++static atomic_unchecked_t combined_event_count = ATOMIC_INIT(0); + + #define IN_PROGRESS_BITS (sizeof(int) * 4) + #define MAX_IN_PROGRESS ((1 << IN_PROGRESS_BITS) - 1) + + static void split_counters(unsigned int *cnt, unsigned int *inpr) + { +- unsigned int comb = atomic_read(&combined_event_count); ++ unsigned int comb = atomic_read_unchecked(&combined_event_count); + + *cnt = (comb >> IN_PROGRESS_BITS); + *inpr = comb & MAX_IN_PROGRESS; +@@ -379,7 +379,7 @@ static void wakeup_source_activate(struct wakeup_source *ws) + ws->last_time = ktime_get(); + + /* Increment the counter of events in progress. */ +- atomic_inc(&combined_event_count); ++ atomic_inc_unchecked(&combined_event_count); + } + + /** +@@ -475,7 +475,7 @@ static void wakeup_source_deactivate(struct wakeup_source *ws) + * Increment the counter of registered wakeup events and decrement the + * couter of wakeup events in progress simultaneously. + */ +- atomic_add(MAX_IN_PROGRESS, &combined_event_count); ++ atomic_add_unchecked(MAX_IN_PROGRESS, &combined_event_count); + } + + /** +diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c +index b0f553b..77b928b 100644 +--- a/drivers/block/cciss.c ++++ b/drivers/block/cciss.c +@@ -1198,6 +1198,8 @@ static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, + int err; + u32 cp; + ++ memset(&arg64, 0, sizeof(arg64)); ++ + err = 0; + err |= + copy_from_user(&arg64.LUN_info, &arg32->LUN_info, +@@ -3007,7 +3009,7 @@ static void start_io(ctlr_info_t *h) + while (!list_empty(&h->reqQ)) { + c = list_entry(h->reqQ.next, CommandList_struct, list); + /* can't do anything if fifo is full */ +- if ((h->access.fifo_full(h))) { ++ if ((h->access->fifo_full(h))) { + dev_warn(&h->pdev->dev, "fifo full\n"); + break; + } +@@ -3017,7 +3019,7 @@ static void start_io(ctlr_info_t *h) + h->Qdepth--; + + /* Tell the controller execute command */ +- h->access.submit_command(h, c); ++ h->access->submit_command(h, c); + + /* Put job onto the completed Q */ + addQ(&h->cmpQ, c); +@@ -3443,17 +3445,17 @@ startio: + + static inline unsigned long get_next_completion(ctlr_info_t *h) + { +- return h->access.command_completed(h); ++ return h->access->command_completed(h); + } + + static inline int interrupt_pending(ctlr_info_t *h) + { +- return h->access.intr_pending(h); ++ return h->access->intr_pending(h); + } + + static inline long interrupt_not_for_us(ctlr_info_t *h) + { +- return ((h->access.intr_pending(h) == 0) || ++ return ((h->access->intr_pending(h) == 0) || + (h->interrupts_enabled == 0)); + } + +@@ -3486,7 +3488,7 @@ static inline u32 next_command(ctlr_info_t *h) + u32 a; + + if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) +- return h->access.command_completed(h); ++ return h->access->command_completed(h); + + if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) { + a = *(h->reply_pool_head); /* Next cmd in ring buffer */ +@@ -4044,7 +4046,7 @@ static void __devinit cciss_put_controller_into_performant_mode(ctlr_info_t *h) + trans_support & CFGTBL_Trans_use_short_tags); + + /* Change the access methods to the performant access methods */ +- h->access = SA5_performant_access; ++ h->access = &SA5_performant_access; + h->transMethod = CFGTBL_Trans_Performant; + + return; +@@ -4316,7 +4318,7 @@ static int __devinit cciss_pci_init(ctlr_info_t *h) + if (prod_index < 0) + return -ENODEV; + h->product_name = products[prod_index].product_name; +- h->access = *(products[prod_index].access); ++ h->access = products[prod_index].access; + + if (cciss_board_disabled(h)) { + dev_warn(&h->pdev->dev, "controller appears to be disabled\n"); +@@ -5041,7 +5043,7 @@ reinit_after_soft_reset: + } + + /* make sure the board interrupts are off */ +- h->access.set_intr_mask(h, CCISS_INTR_OFF); ++ h->access->set_intr_mask(h, CCISS_INTR_OFF); + rc = cciss_request_irq(h, do_cciss_msix_intr, do_cciss_intx); + if (rc) + goto clean2; +@@ -5093,7 +5095,7 @@ reinit_after_soft_reset: + * fake ones to scoop up any residual completions. + */ + spin_lock_irqsave(&h->lock, flags); +- h->access.set_intr_mask(h, CCISS_INTR_OFF); ++ h->access->set_intr_mask(h, CCISS_INTR_OFF); + spin_unlock_irqrestore(&h->lock, flags); + free_irq(h->intr[h->intr_mode], h); + rc = cciss_request_irq(h, cciss_msix_discard_completions, +@@ -5113,9 +5115,9 @@ reinit_after_soft_reset: + dev_info(&h->pdev->dev, "Board READY.\n"); + dev_info(&h->pdev->dev, + "Waiting for stale completions to drain.\n"); +- h->access.set_intr_mask(h, CCISS_INTR_ON); ++ h->access->set_intr_mask(h, CCISS_INTR_ON); + msleep(10000); +- h->access.set_intr_mask(h, CCISS_INTR_OFF); ++ h->access->set_intr_mask(h, CCISS_INTR_OFF); + + rc = controller_reset_failed(h->cfgtable); + if (rc) +@@ -5138,7 +5140,7 @@ reinit_after_soft_reset: + cciss_scsi_setup(h); + + /* Turn the interrupts on so we can service requests */ +- h->access.set_intr_mask(h, CCISS_INTR_ON); ++ h->access->set_intr_mask(h, CCISS_INTR_ON); + + /* Get the firmware version */ + inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); +@@ -5211,7 +5213,7 @@ static void cciss_shutdown(struct pci_dev *pdev) + kfree(flush_buf); + if (return_code != IO_OK) + dev_warn(&h->pdev->dev, "Error flushing cache\n"); +- h->access.set_intr_mask(h, CCISS_INTR_OFF); ++ h->access->set_intr_mask(h, CCISS_INTR_OFF); + free_irq(h->intr[h->intr_mode], h); + } + +diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h +index 7fda30e..eb5dfe0 100644 +--- a/drivers/block/cciss.h ++++ b/drivers/block/cciss.h +@@ -101,7 +101,7 @@ struct ctlr_info + /* information about each logical volume */ + drive_info_struct *drv[CISS_MAX_LUN]; + +- struct access_method access; ++ struct access_method *access; + + /* queue and queue Info */ + struct list_head reqQ; +diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c +index 9125bbe..eede5c8 100644 +--- a/drivers/block/cpqarray.c ++++ b/drivers/block/cpqarray.c +@@ -404,7 +404,7 @@ static int __devinit cpqarray_register_ctlr( int i, struct pci_dev *pdev) + if (register_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname)) { + goto Enomem4; + } +- hba[i]->access.set_intr_mask(hba[i], 0); ++ hba[i]->access->set_intr_mask(hba[i], 0); + if (request_irq(hba[i]->intr, do_ida_intr, + IRQF_DISABLED|IRQF_SHARED, hba[i]->devname, hba[i])) + { +@@ -459,7 +459,7 @@ static int __devinit cpqarray_register_ctlr( int i, struct pci_dev *pdev) + add_timer(&hba[i]->timer); + + /* Enable IRQ now that spinlock and rate limit timer are set up */ +- hba[i]->access.set_intr_mask(hba[i], FIFO_NOT_EMPTY); ++ hba[i]->access->set_intr_mask(hba[i], FIFO_NOT_EMPTY); + + for(j=0; j<NWD; j++) { + struct gendisk *disk = ida_gendisk[i][j]; +@@ -694,7 +694,7 @@ DBGINFO( + for(i=0; i<NR_PRODUCTS; i++) { + if (board_id == products[i].board_id) { + c->product_name = products[i].product_name; +- c->access = *(products[i].access); ++ c->access = products[i].access; + break; + } + } +@@ -792,7 +792,7 @@ static int __devinit cpqarray_eisa_detect(void) + hba[ctlr]->intr = intr; + sprintf(hba[ctlr]->devname, "ida%d", nr_ctlr); + hba[ctlr]->product_name = products[j].product_name; +- hba[ctlr]->access = *(products[j].access); ++ hba[ctlr]->access = products[j].access; + hba[ctlr]->ctlr = ctlr; + hba[ctlr]->board_id = board_id; + hba[ctlr]->pci_dev = NULL; /* not PCI */ +@@ -980,7 +980,7 @@ static void start_io(ctlr_info_t *h) + + while((c = h->reqQ) != NULL) { + /* Can't do anything if we're busy */ +- if (h->access.fifo_full(h) == 0) ++ if (h->access->fifo_full(h) == 0) + return; + + /* Get the first entry from the request Q */ +@@ -988,7 +988,7 @@ static void start_io(ctlr_info_t *h) + h->Qdepth--; + + /* Tell the controller to do our bidding */ +- h->access.submit_command(h, c); ++ h->access->submit_command(h, c); + + /* Get onto the completion Q */ + addQ(&h->cmpQ, c); +@@ -1050,7 +1050,7 @@ static irqreturn_t do_ida_intr(int irq, void *dev_id) + unsigned long flags; + __u32 a,a1; + +- istat = h->access.intr_pending(h); ++ istat = h->access->intr_pending(h); + /* Is this interrupt for us? */ + if (istat == 0) + return IRQ_NONE; +@@ -1061,7 +1061,7 @@ static irqreturn_t do_ida_intr(int irq, void *dev_id) + */ + spin_lock_irqsave(IDA_LOCK(h->ctlr), flags); + if (istat & FIFO_NOT_EMPTY) { +- while((a = h->access.command_completed(h))) { ++ while((a = h->access->command_completed(h))) { + a1 = a; a &= ~3; + if ((c = h->cmpQ) == NULL) + { +@@ -1449,11 +1449,11 @@ static int sendcmd( + /* + * Disable interrupt + */ +- info_p->access.set_intr_mask(info_p, 0); ++ info_p->access->set_intr_mask(info_p, 0); + /* Make sure there is room in the command FIFO */ + /* Actually it should be completely empty at this time. */ + for (i = 200000; i > 0; i--) { +- temp = info_p->access.fifo_full(info_p); ++ temp = info_p->access->fifo_full(info_p); + if (temp != 0) { + break; + } +@@ -1466,7 +1466,7 @@ DBG( + /* + * Send the cmd + */ +- info_p->access.submit_command(info_p, c); ++ info_p->access->submit_command(info_p, c); + complete = pollcomplete(ctlr); + + pci_unmap_single(info_p->pci_dev, (dma_addr_t) c->req.sg[0].addr, +@@ -1549,9 +1549,9 @@ static int revalidate_allvol(ctlr_info_t *host) + * we check the new geometry. Then turn interrupts back on when + * we're done. + */ +- host->access.set_intr_mask(host, 0); ++ host->access->set_intr_mask(host, 0); + getgeometry(ctlr); +- host->access.set_intr_mask(host, FIFO_NOT_EMPTY); ++ host->access->set_intr_mask(host, FIFO_NOT_EMPTY); + + for(i=0; i<NWD; i++) { + struct gendisk *disk = ida_gendisk[ctlr][i]; +@@ -1591,7 +1591,7 @@ static int pollcomplete(int ctlr) + /* Wait (up to 2 seconds) for a command to complete */ + + for (i = 200000; i > 0; i--) { +- done = hba[ctlr]->access.command_completed(hba[ctlr]); ++ done = hba[ctlr]->access->command_completed(hba[ctlr]); + if (done == 0) { + udelay(10); /* a short fixed delay */ + } else +diff --git a/drivers/block/cpqarray.h b/drivers/block/cpqarray.h +index be73e9d..7fbf140 100644 +--- a/drivers/block/cpqarray.h ++++ b/drivers/block/cpqarray.h +@@ -99,7 +99,7 @@ struct ctlr_info { + drv_info_t drv[NWD]; + struct proc_dir_entry *proc; + +- struct access_method access; ++ struct access_method *access; + + cmdlist_t *reqQ; + cmdlist_t *cmpQ; +diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h +index 8d68056..e67050f 100644 +--- a/drivers/block/drbd/drbd_int.h ++++ b/drivers/block/drbd/drbd_int.h +@@ -736,7 +736,7 @@ struct drbd_request; + struct drbd_epoch { + struct list_head list; + unsigned int barrier_nr; +- atomic_t epoch_size; /* increased on every request added. */ ++ atomic_unchecked_t epoch_size; /* increased on every request added. */ + atomic_t active; /* increased on every req. added, and dec on every finished. */ + unsigned long flags; + }; +@@ -1108,7 +1108,7 @@ struct drbd_conf { + void *int_dig_in; + void *int_dig_vv; + wait_queue_head_t seq_wait; +- atomic_t packet_seq; ++ atomic_unchecked_t packet_seq; + unsigned int peer_seq; + spinlock_t peer_seq_lock; + unsigned int minor; +@@ -1617,30 +1617,30 @@ static inline int drbd_setsockopt(struct socket *sock, int level, int optname, + + static inline void drbd_tcp_cork(struct socket *sock) + { +- int __user val = 1; ++ int val = 1; + (void) drbd_setsockopt(sock, SOL_TCP, TCP_CORK, +- (char __user *)&val, sizeof(val)); ++ (char __force_user *)&val, sizeof(val)); + } + + static inline void drbd_tcp_uncork(struct socket *sock) + { +- int __user val = 0; ++ int val = 0; + (void) drbd_setsockopt(sock, SOL_TCP, TCP_CORK, +- (char __user *)&val, sizeof(val)); ++ (char __force_user *)&val, sizeof(val)); + } + + static inline void drbd_tcp_nodelay(struct socket *sock) + { +- int __user val = 1; ++ int val = 1; + (void) drbd_setsockopt(sock, SOL_TCP, TCP_NODELAY, +- (char __user *)&val, sizeof(val)); ++ (char __force_user *)&val, sizeof(val)); + } + + static inline void drbd_tcp_quickack(struct socket *sock) + { +- int __user val = 2; ++ int val = 2; + (void) drbd_setsockopt(sock, SOL_TCP, TCP_QUICKACK, +- (char __user *)&val, sizeof(val)); ++ (char __force_user *)&val, sizeof(val)); + } + + void drbd_bump_write_ordering(struct drbd_conf *mdev, enum write_ordering_e wo); +diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c +index 211fc44..c5116f1 100644 +--- a/drivers/block/drbd/drbd_main.c ++++ b/drivers/block/drbd/drbd_main.c +@@ -2397,7 +2397,7 @@ static int _drbd_send_ack(struct drbd_conf *mdev, enum drbd_packets cmd, + p.sector = sector; + p.block_id = block_id; + p.blksize = blksize; +- p.seq_num = cpu_to_be32(atomic_add_return(1, &mdev->packet_seq)); ++ p.seq_num = cpu_to_be32(atomic_add_return_unchecked(1, &mdev->packet_seq)); + + if (!mdev->meta.socket || mdev->state.conn < C_CONNECTED) + return false; +@@ -2696,7 +2696,7 @@ int drbd_send_dblock(struct drbd_conf *mdev, struct drbd_request *req) + p.sector = cpu_to_be64(req->sector); + p.block_id = (unsigned long)req; + p.seq_num = cpu_to_be32(req->seq_num = +- atomic_add_return(1, &mdev->packet_seq)); ++ atomic_add_return_unchecked(1, &mdev->packet_seq)); + + dp_flags = bio_flags_to_wire(mdev, req->master_bio->bi_rw); + +@@ -2981,7 +2981,7 @@ void drbd_init_set_defaults(struct drbd_conf *mdev) + atomic_set(&mdev->unacked_cnt, 0); + atomic_set(&mdev->local_cnt, 0); + atomic_set(&mdev->net_cnt, 0); +- atomic_set(&mdev->packet_seq, 0); ++ atomic_set_unchecked(&mdev->packet_seq, 0); + atomic_set(&mdev->pp_in_use, 0); + atomic_set(&mdev->pp_in_use_by_net, 0); + atomic_set(&mdev->rs_sect_in, 0); +@@ -3063,8 +3063,8 @@ void drbd_mdev_cleanup(struct drbd_conf *mdev) + mdev->receiver.t_state); + + /* no need to lock it, I'm the only thread alive */ +- if (atomic_read(&mdev->current_epoch->epoch_size) != 0) +- dev_err(DEV, "epoch_size:%d\n", atomic_read(&mdev->current_epoch->epoch_size)); ++ if (atomic_read_unchecked(&mdev->current_epoch->epoch_size) != 0) ++ dev_err(DEV, "epoch_size:%d\n", atomic_read_unchecked(&mdev->current_epoch->epoch_size)); + mdev->al_writ_cnt = + mdev->bm_writ_cnt = + mdev->read_cnt = +diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c +index 946166e..356b39a 100644 +--- a/drivers/block/drbd/drbd_nl.c ++++ b/drivers/block/drbd/drbd_nl.c +@@ -2359,7 +2359,7 @@ static void drbd_connector_callback(struct cn_msg *req, struct netlink_skb_parms + module_put(THIS_MODULE); + } + +-static atomic_t drbd_nl_seq = ATOMIC_INIT(2); /* two. */ ++static atomic_unchecked_t drbd_nl_seq = ATOMIC_INIT(2); /* two. */ + + static unsigned short * + __tl_add_blob(unsigned short *tl, enum drbd_tags tag, const void *data, +@@ -2430,7 +2430,7 @@ void drbd_bcast_state(struct drbd_conf *mdev, union drbd_state state) + cn_reply->id.idx = CN_IDX_DRBD; + cn_reply->id.val = CN_VAL_DRBD; + +- cn_reply->seq = atomic_add_return(1, &drbd_nl_seq); ++ cn_reply->seq = atomic_add_return_unchecked(1, &drbd_nl_seq); + cn_reply->ack = 0; /* not used here. */ + cn_reply->len = sizeof(struct drbd_nl_cfg_reply) + + (int)((char *)tl - (char *)reply->tag_list); +@@ -2462,7 +2462,7 @@ void drbd_bcast_ev_helper(struct drbd_conf *mdev, char *helper_name) + cn_reply->id.idx = CN_IDX_DRBD; + cn_reply->id.val = CN_VAL_DRBD; + +- cn_reply->seq = atomic_add_return(1, &drbd_nl_seq); ++ cn_reply->seq = atomic_add_return_unchecked(1, &drbd_nl_seq); + cn_reply->ack = 0; /* not used here. */ + cn_reply->len = sizeof(struct drbd_nl_cfg_reply) + + (int)((char *)tl - (char *)reply->tag_list); +@@ -2540,7 +2540,7 @@ void drbd_bcast_ee(struct drbd_conf *mdev, + cn_reply->id.idx = CN_IDX_DRBD; + cn_reply->id.val = CN_VAL_DRBD; + +- cn_reply->seq = atomic_add_return(1,&drbd_nl_seq); ++ cn_reply->seq = atomic_add_return_unchecked(1,&drbd_nl_seq); + cn_reply->ack = 0; // not used here. + cn_reply->len = sizeof(struct drbd_nl_cfg_reply) + + (int)((char*)tl - (char*)reply->tag_list); +@@ -2579,7 +2579,7 @@ void drbd_bcast_sync_progress(struct drbd_conf *mdev) + cn_reply->id.idx = CN_IDX_DRBD; + cn_reply->id.val = CN_VAL_DRBD; + +- cn_reply->seq = atomic_add_return(1, &drbd_nl_seq); ++ cn_reply->seq = atomic_add_return_unchecked(1, &drbd_nl_seq); + cn_reply->ack = 0; /* not used here. */ + cn_reply->len = sizeof(struct drbd_nl_cfg_reply) + + (int)((char *)tl - (char *)reply->tag_list); +diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c +index 43beaca..4a5b1dd 100644 +--- a/drivers/block/drbd/drbd_receiver.c ++++ b/drivers/block/drbd/drbd_receiver.c +@@ -894,7 +894,7 @@ retry: + sock->sk->sk_sndtimeo = mdev->net_conf->timeout*HZ/10; + sock->sk->sk_rcvtimeo = MAX_SCHEDULE_TIMEOUT; + +- atomic_set(&mdev->packet_seq, 0); ++ atomic_set_unchecked(&mdev->packet_seq, 0); + mdev->peer_seq = 0; + + drbd_thread_start(&mdev->asender); +@@ -985,7 +985,7 @@ static enum finish_epoch drbd_may_finish_epoch(struct drbd_conf *mdev, + do { + next_epoch = NULL; + +- epoch_size = atomic_read(&epoch->epoch_size); ++ epoch_size = atomic_read_unchecked(&epoch->epoch_size); + + switch (ev & ~EV_CLEANUP) { + case EV_PUT: +@@ -1020,7 +1020,7 @@ static enum finish_epoch drbd_may_finish_epoch(struct drbd_conf *mdev, + rv = FE_DESTROYED; + } else { + epoch->flags = 0; +- atomic_set(&epoch->epoch_size, 0); ++ atomic_set_unchecked(&epoch->epoch_size, 0); + /* atomic_set(&epoch->active, 0); is already zero */ + if (rv == FE_STILL_LIVE) + rv = FE_RECYCLED; +@@ -1191,14 +1191,14 @@ static int receive_Barrier(struct drbd_conf *mdev, enum drbd_packets cmd, unsign + drbd_wait_ee_list_empty(mdev, &mdev->active_ee); + drbd_flush(mdev); + +- if (atomic_read(&mdev->current_epoch->epoch_size)) { ++ if (atomic_read_unchecked(&mdev->current_epoch->epoch_size)) { + epoch = kmalloc(sizeof(struct drbd_epoch), GFP_NOIO); + if (epoch) + break; + } + + epoch = mdev->current_epoch; +- wait_event(mdev->ee_wait, atomic_read(&epoch->epoch_size) == 0); ++ wait_event(mdev->ee_wait, atomic_read_unchecked(&epoch->epoch_size) == 0); + + D_ASSERT(atomic_read(&epoch->active) == 0); + D_ASSERT(epoch->flags == 0); +@@ -1210,11 +1210,11 @@ static int receive_Barrier(struct drbd_conf *mdev, enum drbd_packets cmd, unsign + } + + epoch->flags = 0; +- atomic_set(&epoch->epoch_size, 0); ++ atomic_set_unchecked(&epoch->epoch_size, 0); + atomic_set(&epoch->active, 0); + + spin_lock(&mdev->epoch_lock); +- if (atomic_read(&mdev->current_epoch->epoch_size)) { ++ if (atomic_read_unchecked(&mdev->current_epoch->epoch_size)) { + list_add(&epoch->list, &mdev->current_epoch->list); + mdev->current_epoch = epoch; + mdev->epochs++; +@@ -1663,7 +1663,7 @@ static int receive_Data(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned + spin_unlock(&mdev->peer_seq_lock); + + drbd_send_ack_dp(mdev, P_NEG_ACK, p, data_size); +- atomic_inc(&mdev->current_epoch->epoch_size); ++ atomic_inc_unchecked(&mdev->current_epoch->epoch_size); + return drbd_drain_block(mdev, data_size); + } + +@@ -1689,7 +1689,7 @@ static int receive_Data(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned + + spin_lock(&mdev->epoch_lock); + e->epoch = mdev->current_epoch; +- atomic_inc(&e->epoch->epoch_size); ++ atomic_inc_unchecked(&e->epoch->epoch_size); + atomic_inc(&e->epoch->active); + spin_unlock(&mdev->epoch_lock); + +@@ -3885,7 +3885,7 @@ static void drbd_disconnect(struct drbd_conf *mdev) + D_ASSERT(list_empty(&mdev->done_ee)); + + /* ok, no more ee's on the fly, it is safe to reset the epoch_size */ +- atomic_set(&mdev->current_epoch->epoch_size, 0); ++ atomic_set_unchecked(&mdev->current_epoch->epoch_size, 0); + D_ASSERT(list_empty(&mdev->current_epoch->list)); + } + +diff --git a/drivers/block/loop.c b/drivers/block/loop.c +index bbca966..65e37dd 100644 +--- a/drivers/block/loop.c ++++ b/drivers/block/loop.c +@@ -226,7 +226,7 @@ static int __do_lo_send_write(struct file *file, + mm_segment_t old_fs = get_fs(); + + set_fs(get_ds()); +- bw = file->f_op->write(file, buf, len, &pos); ++ bw = file->f_op->write(file, (const char __force_user *)buf, len, &pos); + set_fs(old_fs); + if (likely(bw == len)) + return 0; +diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig +index ee94686..3e09ad3 100644 +--- a/drivers/char/Kconfig ++++ b/drivers/char/Kconfig +@@ -8,7 +8,8 @@ source "drivers/tty/Kconfig" + + config DEVKMEM + bool "/dev/kmem virtual device support" +- default y ++ default n ++ depends on !GRKERNSEC_KMEM + help + Say Y here if you want to support the /dev/kmem device. The + /dev/kmem device is rarely used, but can be used for certain +@@ -581,6 +582,7 @@ config DEVPORT + bool + depends on !M68K + depends on ISA || PCI ++ depends on !GRKERNSEC_KMEM + default y + + source "drivers/s390/char/Kconfig" +diff --git a/drivers/char/agp/frontend.c b/drivers/char/agp/frontend.c +index 2e04433..22afc64 100644 +--- a/drivers/char/agp/frontend.c ++++ b/drivers/char/agp/frontend.c +@@ -817,7 +817,7 @@ static int agpioc_reserve_wrap(struct agp_file_private *priv, void __user *arg) + if (copy_from_user(&reserve, arg, sizeof(struct agp_region))) + return -EFAULT; + +- if ((unsigned) reserve.seg_count >= ~0U/sizeof(struct agp_segment)) ++ if ((unsigned) reserve.seg_count >= ~0U/sizeof(struct agp_segment_priv)) + return -EFAULT; + + client = agp_find_client_by_pid(reserve.pid); +diff --git a/drivers/char/genrtc.c b/drivers/char/genrtc.c +index 21cb980..f15107c 100644 +--- a/drivers/char/genrtc.c ++++ b/drivers/char/genrtc.c +@@ -272,6 +272,7 @@ static int gen_rtc_ioctl(struct file *file, + switch (cmd) { + + case RTC_PLL_GET: ++ memset(&pll, 0, sizeof(pll)); + if (get_rtc_pll(&pll)) + return -EINVAL; + else +diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c +index dfd7876..c0b0885 100644 +--- a/drivers/char/hpet.c ++++ b/drivers/char/hpet.c +@@ -571,7 +571,7 @@ static inline unsigned long hpet_time_div(struct hpets *hpets, + } + + static int +-hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg, ++hpet_ioctl_common(struct hpet_dev *devp, unsigned int cmd, unsigned long arg, + struct hpet_info *info) + { + struct hpet_timer __iomem *timer; +diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c +index 2c29942..604c5ba 100644 +--- a/drivers/char/ipmi/ipmi_msghandler.c ++++ b/drivers/char/ipmi/ipmi_msghandler.c +@@ -420,7 +420,7 @@ struct ipmi_smi { + struct proc_dir_entry *proc_dir; + char proc_dir_name[10]; + +- atomic_t stats[IPMI_NUM_STATS]; ++ atomic_unchecked_t stats[IPMI_NUM_STATS]; + + /* + * run_to_completion duplicate of smb_info, smi_info +@@ -453,9 +453,9 @@ static DEFINE_MUTEX(smi_watchers_mutex); + + + #define ipmi_inc_stat(intf, stat) \ +- atomic_inc(&(intf)->stats[IPMI_STAT_ ## stat]) ++ atomic_inc_unchecked(&(intf)->stats[IPMI_STAT_ ## stat]) + #define ipmi_get_stat(intf, stat) \ +- ((unsigned int) atomic_read(&(intf)->stats[IPMI_STAT_ ## stat])) ++ ((unsigned int) atomic_read_unchecked(&(intf)->stats[IPMI_STAT_ ## stat])) + + static int is_lan_addr(struct ipmi_addr *addr) + { +@@ -2884,7 +2884,7 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers, + INIT_LIST_HEAD(&intf->cmd_rcvrs); + init_waitqueue_head(&intf->waitq); + for (i = 0; i < IPMI_NUM_STATS; i++) +- atomic_set(&intf->stats[i], 0); ++ atomic_set_unchecked(&intf->stats[i], 0); + + intf->proc_dir = NULL; + +diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c +index 1e638ff..a869ef5 100644 +--- a/drivers/char/ipmi/ipmi_si_intf.c ++++ b/drivers/char/ipmi/ipmi_si_intf.c +@@ -275,7 +275,7 @@ struct smi_info { + unsigned char slave_addr; + + /* Counters and things for the proc filesystem. */ +- atomic_t stats[SI_NUM_STATS]; ++ atomic_unchecked_t stats[SI_NUM_STATS]; + + struct task_struct *thread; + +@@ -284,9 +284,9 @@ struct smi_info { + }; + + #define smi_inc_stat(smi, stat) \ +- atomic_inc(&(smi)->stats[SI_STAT_ ## stat]) ++ atomic_inc_unchecked(&(smi)->stats[SI_STAT_ ## stat]) + #define smi_get_stat(smi, stat) \ +- ((unsigned int) atomic_read(&(smi)->stats[SI_STAT_ ## stat])) ++ ((unsigned int) atomic_read_unchecked(&(smi)->stats[SI_STAT_ ## stat])) + + #define SI_MAX_PARMS 4 + +@@ -3209,7 +3209,7 @@ static int try_smi_init(struct smi_info *new_smi) + atomic_set(&new_smi->req_events, 0); + new_smi->run_to_completion = 0; + for (i = 0; i < SI_NUM_STATS; i++) +- atomic_set(&new_smi->stats[i], 0); ++ atomic_set_unchecked(&new_smi->stats[i], 0); + + new_smi->interrupt_disabled = 1; + atomic_set(&new_smi->stop_operation, 0); +diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c +index 47ff7e4..0c7d340 100644 +--- a/drivers/char/mbcs.c ++++ b/drivers/char/mbcs.c +@@ -799,7 +799,7 @@ static int mbcs_remove(struct cx_dev *dev) + return 0; + } + +-static const struct cx_device_id __devinitdata mbcs_id_table[] = { ++static const struct cx_device_id __devinitconst mbcs_id_table[] = { + { + .part_num = MBCS_PART_NUM, + .mfg_num = MBCS_MFG_NUM, +diff --git a/drivers/char/mem.c b/drivers/char/mem.c +index d6e9d08..4493e89 100644 +--- a/drivers/char/mem.c ++++ b/drivers/char/mem.c +@@ -18,6 +18,7 @@ + #include <linux/raw.h> + #include <linux/tty.h> + #include <linux/capability.h> ++#include <linux/security.h> + #include <linux/ptrace.h> + #include <linux/device.h> + #include <linux/highmem.h> +@@ -35,6 +36,10 @@ + # include <linux/efi.h> + #endif + ++#if defined(CONFIG_GRKERNSEC) && !defined(CONFIG_GRKERNSEC_NO_RBAC) ++extern const struct file_operations grsec_fops; ++#endif ++ + static inline unsigned long size_inside_page(unsigned long start, + unsigned long size) + { +@@ -66,9 +71,13 @@ static inline int range_is_allowed(unsigned long pfn, unsigned long size) + + while (cursor < to) { + if (!devmem_is_allowed(pfn)) { ++#ifdef CONFIG_GRKERNSEC_KMEM ++ gr_handle_mem_readwrite(from, to); ++#else + printk(KERN_INFO + "Program %s tried to access /dev/mem between %Lx->%Lx.\n", + current->comm, from, to); ++#endif + return 0; + } + cursor += PAGE_SIZE; +@@ -76,6 +85,11 @@ static inline int range_is_allowed(unsigned long pfn, unsigned long size) + } + return 1; + } ++#elif defined(CONFIG_GRKERNSEC_KMEM) ++static inline int range_is_allowed(unsigned long pfn, unsigned long size) ++{ ++ return 0; ++} + #else + static inline int range_is_allowed(unsigned long pfn, unsigned long size) + { +@@ -118,6 +132,7 @@ static ssize_t read_mem(struct file *file, char __user *buf, + + while (count > 0) { + unsigned long remaining; ++ char *temp; + + sz = size_inside_page(p, count); + +@@ -133,7 +148,23 @@ static ssize_t read_mem(struct file *file, char __user *buf, + if (!ptr) + return -EFAULT; + +- remaining = copy_to_user(buf, ptr, sz); ++#ifdef CONFIG_PAX_USERCOPY ++ temp = kmalloc(sz, GFP_KERNEL); ++ if (!temp) { ++ unxlate_dev_mem_ptr(p, ptr); ++ return -ENOMEM; ++ } ++ memcpy(temp, ptr, sz); ++#else ++ temp = ptr; ++#endif ++ ++ remaining = copy_to_user(buf, temp, sz); ++ ++#ifdef CONFIG_PAX_USERCOPY ++ kfree(temp); ++#endif ++ + unxlate_dev_mem_ptr(p, ptr); + if (remaining) + return -EFAULT; +@@ -396,9 +427,8 @@ static ssize_t read_kmem(struct file *file, char __user *buf, + size_t count, loff_t *ppos) + { + unsigned long p = *ppos; +- ssize_t low_count, read, sz; ++ ssize_t low_count, read, sz, err = 0; + char * kbuf; /* k-addr because vread() takes vmlist_lock rwlock */ +- int err = 0; + + read = 0; + if (p < (unsigned long) high_memory) { +@@ -420,6 +450,8 @@ static ssize_t read_kmem(struct file *file, char __user *buf, + } + #endif + while (low_count > 0) { ++ char *temp; ++ + sz = size_inside_page(p, low_count); + + /* +@@ -429,7 +461,22 @@ static ssize_t read_kmem(struct file *file, char __user *buf, + */ + kbuf = xlate_dev_kmem_ptr((char *)p); + +- if (copy_to_user(buf, kbuf, sz)) ++#ifdef CONFIG_PAX_USERCOPY ++ temp = kmalloc(sz, GFP_KERNEL); ++ if (!temp) ++ return -ENOMEM; ++ memcpy(temp, kbuf, sz); ++#else ++ temp = kbuf; ++#endif ++ ++ err = copy_to_user(buf, temp, sz); ++ ++#ifdef CONFIG_PAX_USERCOPY ++ kfree(temp); ++#endif ++ ++ if (err) + return -EFAULT; + buf += sz; + p += sz; +@@ -867,6 +914,9 @@ static const struct memdev { + #ifdef CONFIG_CRASH_DUMP + [12] = { "oldmem", 0, &oldmem_fops, NULL }, + #endif ++#if defined(CONFIG_GRKERNSEC) && !defined(CONFIG_GRKERNSEC_NO_RBAC) ++ [13] = { "grsec",S_IRUSR | S_IWUGO, &grsec_fops, NULL }, ++#endif + }; + + static int memory_open(struct inode *inode, struct file *filp) +diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c +index 9df78e2..01ba9ae 100644 +--- a/drivers/char/nvram.c ++++ b/drivers/char/nvram.c +@@ -247,7 +247,7 @@ static ssize_t nvram_read(struct file *file, char __user *buf, + + spin_unlock_irq(&rtc_lock); + +- if (copy_to_user(buf, contents, tmp - contents)) ++ if (tmp - contents > sizeof(contents) || copy_to_user(buf, contents, tmp - contents)) + return -EFAULT; + + *ppos = i; +diff --git a/drivers/char/random.c b/drivers/char/random.c +index 4ec04a7..4a092ed 100644 +--- a/drivers/char/random.c ++++ b/drivers/char/random.c +@@ -261,8 +261,13 @@ + /* + * Configuration information + */ ++#ifdef CONFIG_GRKERNSEC_RANDNET ++#define INPUT_POOL_WORDS 512 ++#define OUTPUT_POOL_WORDS 128 ++#else + #define INPUT_POOL_WORDS 128 + #define OUTPUT_POOL_WORDS 32 ++#endif + #define SEC_XFER_SIZE 512 + #define EXTRACT_SIZE 10 + +@@ -300,10 +305,17 @@ static struct poolinfo { + int poolwords; + int tap1, tap2, tap3, tap4, tap5; + } poolinfo_table[] = { ++#ifdef CONFIG_GRKERNSEC_RANDNET ++ /* x^512 + x^411 + x^308 + x^208 +x^104 + x + 1 -- 225 */ ++ { 512, 411, 308, 208, 104, 1 }, ++ /* x^128 + x^103 + x^76 + x^51 + x^25 + x + 1 -- 105 */ ++ { 128, 103, 76, 51, 25, 1 }, ++#else + /* x^128 + x^103 + x^76 + x^51 +x^25 + x + 1 -- 105 */ + { 128, 103, 76, 51, 25, 1 }, + /* x^32 + x^26 + x^20 + x^14 + x^7 + x + 1 -- 15 */ + { 32, 26, 20, 14, 7, 1 }, ++#endif + #if 0 + /* x^2048 + x^1638 + x^1231 + x^819 + x^411 + x + 1 -- 115 */ + { 2048, 1638, 1231, 819, 411, 1 }, +@@ -913,7 +925,7 @@ static ssize_t extract_entropy_user(struct entropy_store *r, void __user *buf, + + extract_buf(r, tmp); + i = min_t(int, nbytes, EXTRACT_SIZE); +- if (copy_to_user(buf, tmp, i)) { ++ if (i > sizeof(tmp) || copy_to_user(buf, tmp, i)) { + ret = -EFAULT; + break; + } +@@ -1238,7 +1250,7 @@ EXPORT_SYMBOL(generate_random_uuid); + #include <linux/sysctl.h> + + static int min_read_thresh = 8, min_write_thresh; +-static int max_read_thresh = INPUT_POOL_WORDS * 32; ++static int max_read_thresh = OUTPUT_POOL_WORDS * 32; + static int max_write_thresh = INPUT_POOL_WORDS * 32; + static char sysctl_bootid[16]; + +diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c +index 45713f0..8286d21 100644 +--- a/drivers/char/sonypi.c ++++ b/drivers/char/sonypi.c +@@ -54,6 +54,7 @@ + + #include <asm/uaccess.h> + #include <asm/io.h> ++#include <asm/local.h> + + #include <linux/sonypi.h> + +@@ -490,7 +491,7 @@ static struct sonypi_device { + spinlock_t fifo_lock; + wait_queue_head_t fifo_proc_list; + struct fasync_struct *fifo_async; +- int open_count; ++ local_t open_count; + int model; + struct input_dev *input_jog_dev; + struct input_dev *input_key_dev; +@@ -897,7 +898,7 @@ static int sonypi_misc_fasync(int fd, struct file *filp, int on) + static int sonypi_misc_release(struct inode *inode, struct file *file) + { + mutex_lock(&sonypi_device.lock); +- sonypi_device.open_count--; ++ local_dec(&sonypi_device.open_count); + mutex_unlock(&sonypi_device.lock); + return 0; + } +@@ -906,9 +907,9 @@ static int sonypi_misc_open(struct inode *inode, struct file *file) + { + mutex_lock(&sonypi_device.lock); + /* Flush input queue on first open */ +- if (!sonypi_device.open_count) ++ if (!local_read(&sonypi_device.open_count)) + kfifo_reset(&sonypi_device.fifo); +- sonypi_device.open_count++; ++ local_inc(&sonypi_device.open_count); + mutex_unlock(&sonypi_device.lock); + + return 0; +diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c +index ad7c732..5aa8054 100644 +--- a/drivers/char/tpm/tpm.c ++++ b/drivers/char/tpm/tpm.c +@@ -415,7 +415,7 @@ static ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf, + chip->vendor.req_complete_val) + goto out_recv; + +- if ((status == chip->vendor.req_canceled)) { ++ if (status == chip->vendor.req_canceled) { + dev_err(chip->dev, "Operation Canceled\n"); + rc = -ECANCELED; + goto out; +diff --git a/drivers/char/tpm/tpm_bios.c b/drivers/char/tpm/tpm_bios.c +index 0636520..169c1d0 100644 +--- a/drivers/char/tpm/tpm_bios.c ++++ b/drivers/char/tpm/tpm_bios.c +@@ -173,7 +173,7 @@ static void *tpm_bios_measurements_start(struct seq_file *m, loff_t *pos) + event = addr; + + if ((event->event_type == 0 && event->event_size == 0) || +- ((addr + sizeof(struct tcpa_event) + event->event_size) >= limit)) ++ (event->event_size >= limit - addr - sizeof(struct tcpa_event))) + return NULL; + + return addr; +@@ -198,7 +198,7 @@ static void *tpm_bios_measurements_next(struct seq_file *m, void *v, + return NULL; + + if ((event->event_type == 0 && event->event_size == 0) || +- ((v + sizeof(struct tcpa_event) + event->event_size) >= limit)) ++ (event->event_size >= limit - v - sizeof(struct tcpa_event))) + return NULL; + + (*pos)++; +@@ -291,7 +291,8 @@ static int tpm_binary_bios_measurements_show(struct seq_file *m, void *v) + int i; + + for (i = 0; i < sizeof(struct tcpa_event) + event->event_size; i++) +- seq_putc(m, data[i]); ++ if (!seq_putc(m, data[i])) ++ return -EFAULT; + + return 0; + } +@@ -410,8 +411,13 @@ static int read_log(struct tpm_bios_log *log) + log->bios_event_log_end = log->bios_event_log + len; + + virt = acpi_os_map_memory(start, len); ++ if (!virt) { ++ kfree(log->bios_event_log); ++ log->bios_event_log = NULL; ++ return -EFAULT; ++ } + +- memcpy(log->bios_event_log, virt, len); ++ memcpy(log->bios_event_log, (const char __force_kernel *)virt, len); + + acpi_os_unmap_memory(virt, len); + return 0; +diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c +index cdf2f54..e55c197 100644 +--- a/drivers/char/virtio_console.c ++++ b/drivers/char/virtio_console.c +@@ -563,7 +563,7 @@ static ssize_t fill_readbuf(struct port *port, char *out_buf, size_t out_count, + if (to_user) { + ssize_t ret; + +- ret = copy_to_user(out_buf, buf->buf + buf->offset, out_count); ++ ret = copy_to_user((char __force_user *)out_buf, buf->buf + buf->offset, out_count); + if (ret) + return -EFAULT; + } else { +@@ -662,7 +662,7 @@ static ssize_t port_fops_read(struct file *filp, char __user *ubuf, + if (!port_has_data(port) && !port->host_connected) + return 0; + +- return fill_readbuf(port, ubuf, count, true); ++ return fill_readbuf(port, (char __force_kernel *)ubuf, count, true); + } + + static ssize_t port_fops_write(struct file *filp, const char __user *ubuf, +diff --git a/drivers/edac/edac_pci_sysfs.c b/drivers/edac/edac_pci_sysfs.c +index 97f5064..202b6e6 100644 +--- a/drivers/edac/edac_pci_sysfs.c ++++ b/drivers/edac/edac_pci_sysfs.c +@@ -26,8 +26,8 @@ static int edac_pci_log_pe = 1; /* log PCI parity errors */ + static int edac_pci_log_npe = 1; /* log PCI non-parity error errors */ + static int edac_pci_poll_msec = 1000; /* one second workq period */ + +-static atomic_t pci_parity_count = ATOMIC_INIT(0); +-static atomic_t pci_nonparity_count = ATOMIC_INIT(0); ++static atomic_unchecked_t pci_parity_count = ATOMIC_INIT(0); ++static atomic_unchecked_t pci_nonparity_count = ATOMIC_INIT(0); + + static struct kobject *edac_pci_top_main_kobj; + static atomic_t edac_pci_sysfs_refcount = ATOMIC_INIT(0); +@@ -582,7 +582,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) + edac_printk(KERN_CRIT, EDAC_PCI, + "Signaled System Error on %s\n", + pci_name(dev)); +- atomic_inc(&pci_nonparity_count); ++ atomic_inc_unchecked(&pci_nonparity_count); + } + + if (status & (PCI_STATUS_PARITY)) { +@@ -590,7 +590,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) + "Master Data Parity Error on %s\n", + pci_name(dev)); + +- atomic_inc(&pci_parity_count); ++ atomic_inc_unchecked(&pci_parity_count); + } + + if (status & (PCI_STATUS_DETECTED_PARITY)) { +@@ -598,7 +598,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) + "Detected Parity Error on %s\n", + pci_name(dev)); + +- atomic_inc(&pci_parity_count); ++ atomic_inc_unchecked(&pci_parity_count); + } + } + +@@ -619,7 +619,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) + edac_printk(KERN_CRIT, EDAC_PCI, "Bridge " + "Signaled System Error on %s\n", + pci_name(dev)); +- atomic_inc(&pci_nonparity_count); ++ atomic_inc_unchecked(&pci_nonparity_count); + } + + if (status & (PCI_STATUS_PARITY)) { +@@ -627,7 +627,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) + "Master Data Parity Error on " + "%s\n", pci_name(dev)); + +- atomic_inc(&pci_parity_count); ++ atomic_inc_unchecked(&pci_parity_count); + } + + if (status & (PCI_STATUS_DETECTED_PARITY)) { +@@ -635,7 +635,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) + "Detected Parity Error on %s\n", + pci_name(dev)); + +- atomic_inc(&pci_parity_count); ++ atomic_inc_unchecked(&pci_parity_count); + } + } + } +@@ -677,7 +677,7 @@ void edac_pci_do_parity_check(void) + if (!check_pci_errors) + return; + +- before_count = atomic_read(&pci_parity_count); ++ before_count = atomic_read_unchecked(&pci_parity_count); + + /* scan all PCI devices looking for a Parity Error on devices and + * bridges. +@@ -689,7 +689,7 @@ void edac_pci_do_parity_check(void) + /* Only if operator has selected panic on PCI Error */ + if (edac_pci_get_panic_on_pe()) { + /* If the count is different 'after' from 'before' */ +- if (before_count != atomic_read(&pci_parity_count)) ++ if (before_count != atomic_read_unchecked(&pci_parity_count)) + panic("EDAC: PCI Parity Error"); + } + } +diff --git a/drivers/edac/mce_amd.h b/drivers/edac/mce_amd.h +index c6074c5..88a9e2e 100644 +--- a/drivers/edac/mce_amd.h ++++ b/drivers/edac/mce_amd.h +@@ -82,7 +82,7 @@ extern const char * const ii_msgs[]; + struct amd_decoder_ops { + bool (*dc_mce)(u16, u8); + bool (*ic_mce)(u16, u8); +-}; ++} __no_const; + + void amd_report_gart_errors(bool); + void amd_register_ecc_decoder(void (*f)(int, struct mce *)); +diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c +index cc595eb..4ec702a 100644 +--- a/drivers/firewire/core-card.c ++++ b/drivers/firewire/core-card.c +@@ -679,7 +679,7 @@ void fw_card_release(struct kref *kref) + + void fw_core_remove_card(struct fw_card *card) + { +- struct fw_card_driver dummy_driver = dummy_driver_template; ++ fw_card_driver_no_const dummy_driver = dummy_driver_template; + + card->driver->update_phy_reg(card, 4, + PHY_LINK_ACTIVE | PHY_CONTENDER, 0); +diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c +index 2e6b245..c3857d9 100644 +--- a/drivers/firewire/core-cdev.c ++++ b/drivers/firewire/core-cdev.c +@@ -1341,8 +1341,7 @@ static int init_iso_resource(struct client *client, + int ret; + + if ((request->channels == 0 && request->bandwidth == 0) || +- request->bandwidth > BANDWIDTH_AVAILABLE_INITIAL || +- request->bandwidth < 0) ++ request->bandwidth > BANDWIDTH_AVAILABLE_INITIAL) + return -EINVAL; + + r = kmalloc(sizeof(*r), GFP_KERNEL); +diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c +index dea2dcc..a4fb978 100644 +--- a/drivers/firewire/core-transaction.c ++++ b/drivers/firewire/core-transaction.c +@@ -37,6 +37,7 @@ + #include <linux/timer.h> + #include <linux/types.h> + #include <linux/workqueue.h> ++#include <linux/sched.h> + + #include <asm/byteorder.h> + +diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h +index 9047f55..e47c7ff 100644 +--- a/drivers/firewire/core.h ++++ b/drivers/firewire/core.h +@@ -110,6 +110,7 @@ struct fw_card_driver { + + int (*stop_iso)(struct fw_iso_context *ctx); + }; ++typedef struct fw_card_driver __no_const fw_card_driver_no_const; + + void fw_card_initialize(struct fw_card *card, + const struct fw_card_driver *driver, struct device *device); +diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c +index 153980b..4b4d046 100644 +--- a/drivers/firmware/dmi_scan.c ++++ b/drivers/firmware/dmi_scan.c +@@ -449,11 +449,6 @@ void __init dmi_scan_machine(void) + } + } + else { +- /* +- * no iounmap() for that ioremap(); it would be a no-op, but +- * it's so early in setup that sucker gets confused into doing +- * what it shouldn't if we actually call it. +- */ + p = dmi_ioremap(0xF0000, 0x10000); + if (p == NULL) + goto error; +@@ -723,7 +718,7 @@ int dmi_walk(void (*decode)(const struct dmi_header *, void *), + if (buf == NULL) + return -1; + +- dmi_table(buf, dmi_len, dmi_num, decode, private_data); ++ dmi_table((char __force_kernel *)buf, dmi_len, dmi_num, decode, private_data); + + iounmap(buf); + return 0; +diff --git a/drivers/gpio/gpio-vr41xx.c b/drivers/gpio/gpio-vr41xx.c +index 82d5c20..44a7177 100644 +--- a/drivers/gpio/gpio-vr41xx.c ++++ b/drivers/gpio/gpio-vr41xx.c +@@ -204,7 +204,7 @@ static int giu_get_irq(unsigned int irq) + printk(KERN_ERR "spurious GIU interrupt: %04x(%04x),%04x(%04x)\n", + maskl, pendl, maskh, pendh); + +- atomic_inc(&irq_err_count); ++ atomic_inc_unchecked(&irq_err_count); + + return -EINVAL; + } +diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c +index 8111889..367b253 100644 +--- a/drivers/gpu/drm/drm_crtc_helper.c ++++ b/drivers/gpu/drm/drm_crtc_helper.c +@@ -286,7 +286,7 @@ static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, + struct drm_crtc *tmp; + int crtc_mask = 1; + +- WARN(!crtc, "checking null crtc?\n"); ++ BUG_ON(!crtc); + + dev = crtc->dev; + +diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c +index 6116e3b..c29dd16 100644 +--- a/drivers/gpu/drm/drm_drv.c ++++ b/drivers/gpu/drm/drm_drv.c +@@ -316,7 +316,7 @@ module_exit(drm_core_exit); + /** + * Copy and IOCTL return string to user space + */ +-static int drm_copy_field(char *buf, size_t *buf_len, const char *value) ++static int drm_copy_field(char __user *buf, size_t *buf_len, const char *value) + { + int len; + +@@ -399,7 +399,7 @@ long drm_ioctl(struct file *filp, + return -ENODEV; + + atomic_inc(&dev->ioctl_count); +- atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); ++ atomic_inc_unchecked(&dev->counts[_DRM_STAT_IOCTLS]); + ++file_priv->ioctl_count; + + DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n", +diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c +index 123de28..43a0897 100644 +--- a/drivers/gpu/drm/drm_fops.c ++++ b/drivers/gpu/drm/drm_fops.c +@@ -71,7 +71,7 @@ static int drm_setup(struct drm_device * dev) + } + + for (i = 0; i < ARRAY_SIZE(dev->counts); i++) +- atomic_set(&dev->counts[i], 0); ++ atomic_set_unchecked(&dev->counts[i], 0); + + dev->sigdata.lock = NULL; + +@@ -138,8 +138,8 @@ int drm_open(struct inode *inode, struct file *filp) + + retcode = drm_open_helper(inode, filp, dev); + if (!retcode) { +- atomic_inc(&dev->counts[_DRM_STAT_OPENS]); +- if (!dev->open_count++) ++ atomic_inc_unchecked(&dev->counts[_DRM_STAT_OPENS]); ++ if (local_inc_return(&dev->open_count) == 1) + retcode = drm_setup(dev); + } + if (!retcode) { +@@ -482,7 +482,7 @@ int drm_release(struct inode *inode, struct file *filp) + + mutex_lock(&drm_global_mutex); + +- DRM_DEBUG("open_count = %d\n", dev->open_count); ++ DRM_DEBUG("open_count = %ld\n", local_read(&dev->open_count)); + + if (dev->driver->preclose) + dev->driver->preclose(dev, file_priv); +@@ -491,10 +491,10 @@ int drm_release(struct inode *inode, struct file *filp) + * Begin inline drm_release + */ + +- DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", ++ DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %ld\n", + task_pid_nr(current), + (long)old_encode_dev(file_priv->minor->device), +- dev->open_count); ++ local_read(&dev->open_count)); + + /* Release any auth tokens that might point to this file_priv, + (do that under the drm_global_mutex) */ +@@ -584,8 +584,8 @@ int drm_release(struct inode *inode, struct file *filp) + * End inline drm_release + */ + +- atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); +- if (!--dev->open_count) { ++ atomic_inc_unchecked(&dev->counts[_DRM_STAT_CLOSES]); ++ if (local_dec_and_test(&dev->open_count)) { + if (atomic_read(&dev->ioctl_count)) { + DRM_ERROR("Device busy: %d\n", + atomic_read(&dev->ioctl_count)); +diff --git a/drivers/gpu/drm/drm_global.c b/drivers/gpu/drm/drm_global.c +index c87dc96..326055d 100644 +--- a/drivers/gpu/drm/drm_global.c ++++ b/drivers/gpu/drm/drm_global.c +@@ -36,7 +36,7 @@ + struct drm_global_item { + struct mutex mutex; + void *object; +- int refcount; ++ atomic_t refcount; + }; + + static struct drm_global_item glob[DRM_GLOBAL_NUM]; +@@ -49,7 +49,7 @@ void drm_global_init(void) + struct drm_global_item *item = &glob[i]; + mutex_init(&item->mutex); + item->object = NULL; +- item->refcount = 0; ++ atomic_set(&item->refcount, 0); + } + } + +@@ -59,7 +59,7 @@ void drm_global_release(void) + for (i = 0; i < DRM_GLOBAL_NUM; ++i) { + struct drm_global_item *item = &glob[i]; + BUG_ON(item->object != NULL); +- BUG_ON(item->refcount != 0); ++ BUG_ON(atomic_read(&item->refcount) != 0); + } + } + +@@ -70,7 +70,7 @@ int drm_global_item_ref(struct drm_global_reference *ref) + void *object; + + mutex_lock(&item->mutex); +- if (item->refcount == 0) { ++ if (atomic_read(&item->refcount) == 0) { + item->object = kzalloc(ref->size, GFP_KERNEL); + if (unlikely(item->object == NULL)) { + ret = -ENOMEM; +@@ -83,7 +83,7 @@ int drm_global_item_ref(struct drm_global_reference *ref) + goto out_err; + + } +- ++item->refcount; ++ atomic_inc(&item->refcount); + ref->object = item->object; + object = item->object; + mutex_unlock(&item->mutex); +@@ -100,9 +100,9 @@ void drm_global_item_unref(struct drm_global_reference *ref) + struct drm_global_item *item = &glob[ref->global_type]; + + mutex_lock(&item->mutex); +- BUG_ON(item->refcount == 0); ++ BUG_ON(atomic_read(&item->refcount) == 0); + BUG_ON(ref->object != item->object); +- if (--item->refcount == 0) { ++ if (atomic_dec_and_test(&item->refcount)) { + ref->release(ref); + item->object = NULL; + } +diff --git a/drivers/gpu/drm/drm_info.c b/drivers/gpu/drm/drm_info.c +index ab1162d..42587b2 100644 +--- a/drivers/gpu/drm/drm_info.c ++++ b/drivers/gpu/drm/drm_info.c +@@ -75,10 +75,14 @@ int drm_vm_info(struct seq_file *m, void *data) + struct drm_local_map *map; + struct drm_map_list *r_list; + +- /* Hardcoded from _DRM_FRAME_BUFFER, +- _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and +- _DRM_SCATTER_GATHER and _DRM_CONSISTENT */ +- const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" }; ++ static const char * const types[] = { ++ [_DRM_FRAME_BUFFER] = "FB", ++ [_DRM_REGISTERS] = "REG", ++ [_DRM_SHM] = "SHM", ++ [_DRM_AGP] = "AGP", ++ [_DRM_SCATTER_GATHER] = "SG", ++ [_DRM_CONSISTENT] = "PCI", ++ [_DRM_GEM] = "GEM" }; + const char *type; + int i; + +@@ -89,7 +93,7 @@ int drm_vm_info(struct seq_file *m, void *data) + map = r_list->map; + if (!map) + continue; +- if (map->type < 0 || map->type > 5) ++ if (map->type >= ARRAY_SIZE(types)) + type = "??"; + else + type = types[map->type]; +@@ -290,7 +294,11 @@ int drm_vma_info(struct seq_file *m, void *data) + vma->vm_flags & VM_MAYSHARE ? 's' : 'p', + vma->vm_flags & VM_LOCKED ? 'l' : '-', + vma->vm_flags & VM_IO ? 'i' : '-', ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ 0); ++#else + vma->vm_pgoff); ++#endif + + #if defined(__i386__) + pgprot = pgprot_val(vma->vm_page_prot); +diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c +index 637fcc3..e890b33 100644 +--- a/drivers/gpu/drm/drm_ioc32.c ++++ b/drivers/gpu/drm/drm_ioc32.c +@@ -457,7 +457,7 @@ static int compat_drm_infobufs(struct file *file, unsigned int cmd, + request = compat_alloc_user_space(nbytes); + if (!access_ok(VERIFY_WRITE, request, nbytes)) + return -EFAULT; +- list = (struct drm_buf_desc *) (request + 1); ++ list = (struct drm_buf_desc __user *) (request + 1); + + if (__put_user(count, &request->count) + || __put_user(list, &request->list)) +@@ -518,7 +518,7 @@ static int compat_drm_mapbufs(struct file *file, unsigned int cmd, + request = compat_alloc_user_space(nbytes); + if (!access_ok(VERIFY_WRITE, request, nbytes)) + return -EFAULT; +- list = (struct drm_buf_pub *) (request + 1); ++ list = (struct drm_buf_pub __user *) (request + 1); + + if (__put_user(count, &request->count) + || __put_user(list, &request->list)) +diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c +index cf85155..f2665cb 100644 +--- a/drivers/gpu/drm/drm_ioctl.c ++++ b/drivers/gpu/drm/drm_ioctl.c +@@ -252,7 +252,7 @@ int drm_getstats(struct drm_device *dev, void *data, + stats->data[i].value = + (file_priv->master->lock.hw_lock ? file_priv->master->lock.hw_lock->lock : 0); + else +- stats->data[i].value = atomic_read(&dev->counts[i]); ++ stats->data[i].value = atomic_read_unchecked(&dev->counts[i]); + stats->data[i].type = dev->types[i]; + } + +diff --git a/drivers/gpu/drm/drm_lock.c b/drivers/gpu/drm/drm_lock.c +index c79c713..2048588 100644 +--- a/drivers/gpu/drm/drm_lock.c ++++ b/drivers/gpu/drm/drm_lock.c +@@ -90,7 +90,7 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv) + if (drm_lock_take(&master->lock, lock->context)) { + master->lock.file_priv = file_priv; + master->lock.lock_time = jiffies; +- atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); ++ atomic_inc_unchecked(&dev->counts[_DRM_STAT_LOCKS]); + break; /* Got lock */ + } + +@@ -161,7 +161,7 @@ int drm_unlock(struct drm_device *dev, void *data, struct drm_file *file_priv) + return -EINVAL; + } + +- atomic_inc(&dev->counts[_DRM_STAT_UNLOCKS]); ++ atomic_inc_unchecked(&dev->counts[_DRM_STAT_UNLOCKS]); + + if (drm_lock_free(&master->lock, lock->context)) { + /* FIXME: Should really bail out here. */ +diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c +index aa454f8..6d38580 100644 +--- a/drivers/gpu/drm/drm_stub.c ++++ b/drivers/gpu/drm/drm_stub.c +@@ -512,7 +512,7 @@ void drm_unplug_dev(struct drm_device *dev) + + drm_device_set_unplugged(dev); + +- if (dev->open_count == 0) { ++ if (local_read(&dev->open_count) == 0) { + drm_put_dev(dev); + } + mutex_unlock(&drm_global_mutex); +diff --git a/drivers/gpu/drm/i810/i810_dma.c b/drivers/gpu/drm/i810/i810_dma.c +index f920fb5..001c52d 100644 +--- a/drivers/gpu/drm/i810/i810_dma.c ++++ b/drivers/gpu/drm/i810/i810_dma.c +@@ -945,8 +945,8 @@ static int i810_dma_vertex(struct drm_device *dev, void *data, + dma->buflist[vertex->idx], + vertex->discard, vertex->used); + +- atomic_add(vertex->used, &dev->counts[_DRM_STAT_SECONDARY]); +- atomic_inc(&dev->counts[_DRM_STAT_DMA]); ++ atomic_add_unchecked(vertex->used, &dev->counts[_DRM_STAT_SECONDARY]); ++ atomic_inc_unchecked(&dev->counts[_DRM_STAT_DMA]); + sarea_priv->last_enqueue = dev_priv->counter - 1; + sarea_priv->last_dispatch = (int)hw_status[5]; + +@@ -1106,8 +1106,8 @@ static int i810_dma_mc(struct drm_device *dev, void *data, + i810_dma_dispatch_mc(dev, dma->buflist[mc->idx], mc->used, + mc->last_render); + +- atomic_add(mc->used, &dev->counts[_DRM_STAT_SECONDARY]); +- atomic_inc(&dev->counts[_DRM_STAT_DMA]); ++ atomic_add_unchecked(mc->used, &dev->counts[_DRM_STAT_SECONDARY]); ++ atomic_inc_unchecked(&dev->counts[_DRM_STAT_DMA]); + sarea_priv->last_enqueue = dev_priv->counter - 1; + sarea_priv->last_dispatch = (int)hw_status[5]; + +diff --git a/drivers/gpu/drm/i810/i810_drv.h b/drivers/gpu/drm/i810/i810_drv.h +index c9339f4..f5e1b9d 100644 +--- a/drivers/gpu/drm/i810/i810_drv.h ++++ b/drivers/gpu/drm/i810/i810_drv.h +@@ -108,8 +108,8 @@ typedef struct drm_i810_private { + int page_flipping; + + wait_queue_head_t irq_queue; +- atomic_t irq_received; +- atomic_t irq_emitted; ++ atomic_unchecked_t irq_received; ++ atomic_unchecked_t irq_emitted; + + int front_offset; + } drm_i810_private_t; +diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c +index e6162a1..b2ff486 100644 +--- a/drivers/gpu/drm/i915/i915_debugfs.c ++++ b/drivers/gpu/drm/i915/i915_debugfs.c +@@ -500,7 +500,7 @@ static int i915_interrupt_info(struct seq_file *m, void *data) + I915_READ(GTIMR)); + } + seq_printf(m, "Interrupts received: %d\n", +- atomic_read(&dev_priv->irq_received)); ++ atomic_read_unchecked(&dev_priv->irq_received)); + for (i = 0; i < I915_NUM_RINGS; i++) { + if (IS_GEN6(dev) || IS_GEN7(dev)) { + seq_printf(m, "Graphics Interrupt mask (%s): %08x\n", +@@ -1313,7 +1313,7 @@ static int i915_opregion(struct seq_file *m, void *unused) + return ret; + + if (opregion->header) +- seq_write(m, opregion->header, OPREGION_SIZE); ++ seq_write(m, (const void __force_kernel *)opregion->header, OPREGION_SIZE); + + mutex_unlock(&dev->struct_mutex); + +diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c +index ba60f3c..e2dff7f 100644 +--- a/drivers/gpu/drm/i915/i915_dma.c ++++ b/drivers/gpu/drm/i915/i915_dma.c +@@ -1178,7 +1178,7 @@ static bool i915_switcheroo_can_switch(struct pci_dev *pdev) + bool can_switch; + + spin_lock(&dev->count_lock); +- can_switch = (dev->open_count == 0); ++ can_switch = (local_read(&dev->open_count) == 0); + spin_unlock(&dev->count_lock); + return can_switch; + } +diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h +index 5fabc6c..0b08aa1 100644 +--- a/drivers/gpu/drm/i915/i915_drv.h ++++ b/drivers/gpu/drm/i915/i915_drv.h +@@ -240,7 +240,7 @@ struct drm_i915_display_funcs { + /* render clock increase/decrease */ + /* display clock increase/decrease */ + /* pll clock increase/decrease */ +-}; ++} __no_const; + + struct intel_device_info { + u8 gen; +@@ -350,7 +350,7 @@ typedef struct drm_i915_private { + int current_page; + int page_flipping; + +- atomic_t irq_received; ++ atomic_unchecked_t irq_received; + + /* protects the irq masks */ + spinlock_t irq_lock; +@@ -937,7 +937,7 @@ struct drm_i915_gem_object { + * will be page flipped away on the next vblank. When it + * reaches 0, dev_priv->pending_flip_queue will be woken up. + */ +- atomic_t pending_flip; ++ atomic_unchecked_t pending_flip; + }; + + #define to_intel_bo(x) container_of(x, struct drm_i915_gem_object, base) +@@ -1359,7 +1359,7 @@ extern int intel_setup_gmbus(struct drm_device *dev); + extern void intel_teardown_gmbus(struct drm_device *dev); + extern void intel_gmbus_set_speed(struct i2c_adapter *adapter, int speed); + extern void intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit); +-extern inline bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter) ++static inline bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter) + { + return container_of(adapter, struct intel_gmbus, adapter)->force_bit; + } +diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c +index de43194..a14c4cc 100644 +--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c ++++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c +@@ -189,7 +189,7 @@ i915_gem_object_set_to_gpu_domain(struct drm_i915_gem_object *obj, + i915_gem_clflush_object(obj); + + if (obj->base.pending_write_domain) +- cd->flips |= atomic_read(&obj->pending_flip); ++ cd->flips |= atomic_read_unchecked(&obj->pending_flip); + + /* The actual obj->write_domain will be updated with + * pending_write_domain after we emit the accumulated flush for all +@@ -933,9 +933,9 @@ i915_gem_check_execbuffer(struct drm_i915_gem_execbuffer2 *exec) + + static int + validate_exec_list(struct drm_i915_gem_exec_object2 *exec, +- int count) ++ unsigned int count) + { +- int i; ++ unsigned int i; + + for (i = 0; i < count; i++) { + char __user *ptr = (char __user *)(uintptr_t)exec[i].relocs_ptr; +diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c +index 26c67a7..8d4cbcb 100644 +--- a/drivers/gpu/drm/i915/i915_irq.c ++++ b/drivers/gpu/drm/i915/i915_irq.c +@@ -496,7 +496,7 @@ static irqreturn_t ivybridge_irq_handler(DRM_IRQ_ARGS) + u32 de_iir, gt_iir, de_ier, pch_iir, pm_iir; + struct drm_i915_master_private *master_priv; + +- atomic_inc(&dev_priv->irq_received); ++ atomic_inc_unchecked(&dev_priv->irq_received); + + /* disable master interrupt before clearing iir */ + de_ier = I915_READ(DEIER); +@@ -579,7 +579,7 @@ static irqreturn_t ironlake_irq_handler(DRM_IRQ_ARGS) + struct drm_i915_master_private *master_priv; + u32 bsd_usr_interrupt = GT_BSD_USER_INTERRUPT; + +- atomic_inc(&dev_priv->irq_received); ++ atomic_inc_unchecked(&dev_priv->irq_received); + + if (IS_GEN6(dev)) + bsd_usr_interrupt = GT_GEN6_BSD_USER_INTERRUPT; +@@ -1291,7 +1291,7 @@ static irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) + int ret = IRQ_NONE, pipe; + bool blc_event = false; + +- atomic_inc(&dev_priv->irq_received); ++ atomic_inc_unchecked(&dev_priv->irq_received); + + iir = I915_READ(IIR); + +@@ -1802,7 +1802,7 @@ static void ironlake_irq_preinstall(struct drm_device *dev) + { + drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; + +- atomic_set(&dev_priv->irq_received, 0); ++ atomic_set_unchecked(&dev_priv->irq_received, 0); + + INIT_WORK(&dev_priv->hotplug_work, i915_hotplug_work_func); + INIT_WORK(&dev_priv->error_work, i915_error_work_func); +@@ -1979,7 +1979,7 @@ static void i915_driver_irq_preinstall(struct drm_device * dev) + drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; + int pipe; + +- atomic_set(&dev_priv->irq_received, 0); ++ atomic_set_unchecked(&dev_priv->irq_received, 0); + + INIT_WORK(&dev_priv->hotplug_work, i915_hotplug_work_func); + INIT_WORK(&dev_priv->error_work, i915_error_work_func); +diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c +index d4d162f..e80037c 100644 +--- a/drivers/gpu/drm/i915/intel_display.c ++++ b/drivers/gpu/drm/i915/intel_display.c +@@ -2254,7 +2254,7 @@ intel_finish_fb(struct drm_framebuffer *old_fb) + + wait_event(dev_priv->pending_flip_queue, + atomic_read(&dev_priv->mm.wedged) || +- atomic_read(&obj->pending_flip) == 0); ++ atomic_read_unchecked(&obj->pending_flip) == 0); + + /* Big Hammer, we also need to ensure that any pending + * MI_WAIT_FOR_EVENT inside a user batch buffer on the +@@ -2919,7 +2919,7 @@ static void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc) + obj = to_intel_framebuffer(crtc->fb)->obj; + dev_priv = crtc->dev->dev_private; + wait_event(dev_priv->pending_flip_queue, +- atomic_read(&obj->pending_flip) == 0); ++ atomic_read_unchecked(&obj->pending_flip) == 0); + } + + static bool intel_crtc_driving_pch(struct drm_crtc *crtc) +@@ -7286,7 +7286,7 @@ static void do_intel_finish_page_flip(struct drm_device *dev, + + atomic_clear_mask(1 << intel_crtc->plane, + &obj->pending_flip.counter); +- if (atomic_read(&obj->pending_flip) == 0) ++ if (atomic_read_unchecked(&obj->pending_flip) == 0) + wake_up(&dev_priv->pending_flip_queue); + + schedule_work(&work->work); +@@ -7582,7 +7582,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc, + /* Block clients from rendering to the new back buffer until + * the flip occurs and the object is no longer visible. + */ +- atomic_add(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip); ++ atomic_add_unchecked(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip); + + ret = dev_priv->display.queue_flip(dev, crtc, fb, obj); + if (ret) +@@ -7596,7 +7596,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc, + return 0; + + cleanup_pending: +- atomic_sub(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip); ++ atomic_sub_unchecked(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip); + drm_gem_object_unreference(&work->old_fb_obj->base); + drm_gem_object_unreference(&obj->base); + mutex_unlock(&dev->struct_mutex); +diff --git a/drivers/gpu/drm/mga/mga_drv.h b/drivers/gpu/drm/mga/mga_drv.h +index 54558a0..2d97005 100644 +--- a/drivers/gpu/drm/mga/mga_drv.h ++++ b/drivers/gpu/drm/mga/mga_drv.h +@@ -120,9 +120,9 @@ typedef struct drm_mga_private { + u32 clear_cmd; + u32 maccess; + +- atomic_t vbl_received; /**< Number of vblanks received. */ ++ atomic_unchecked_t vbl_received; /**< Number of vblanks received. */ + wait_queue_head_t fence_queue; +- atomic_t last_fence_retired; ++ atomic_unchecked_t last_fence_retired; + u32 next_fence_to_post; + + unsigned int fb_cpp; +diff --git a/drivers/gpu/drm/mga/mga_irq.c b/drivers/gpu/drm/mga/mga_irq.c +index 2581202..f230a8d9 100644 +--- a/drivers/gpu/drm/mga/mga_irq.c ++++ b/drivers/gpu/drm/mga/mga_irq.c +@@ -44,7 +44,7 @@ u32 mga_get_vblank_counter(struct drm_device *dev, int crtc) + if (crtc != 0) + return 0; + +- return atomic_read(&dev_priv->vbl_received); ++ return atomic_read_unchecked(&dev_priv->vbl_received); + } + + +@@ -60,7 +60,7 @@ irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS) + /* VBLANK interrupt */ + if (status & MGA_VLINEPEN) { + MGA_WRITE(MGA_ICLEAR, MGA_VLINEICLR); +- atomic_inc(&dev_priv->vbl_received); ++ atomic_inc_unchecked(&dev_priv->vbl_received); + drm_handle_vblank(dev, 0); + handled = 1; + } +@@ -79,7 +79,7 @@ irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS) + if ((prim_start & ~0x03) != (prim_end & ~0x03)) + MGA_WRITE(MGA_PRIMEND, prim_end); + +- atomic_inc(&dev_priv->last_fence_retired); ++ atomic_inc_unchecked(&dev_priv->last_fence_retired); + DRM_WAKEUP(&dev_priv->fence_queue); + handled = 1; + } +@@ -130,7 +130,7 @@ int mga_driver_fence_wait(struct drm_device *dev, unsigned int *sequence) + * using fences. + */ + DRM_WAIT_ON(ret, dev_priv->fence_queue, 3 * DRM_HZ, +- (((cur_fence = atomic_read(&dev_priv->last_fence_retired)) ++ (((cur_fence = atomic_read_unchecked(&dev_priv->last_fence_retired)) + - *sequence) <= (1 << 23))); + + *sequence = cur_fence; +diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c +index 0be4a81..7464804 100644 +--- a/drivers/gpu/drm/nouveau/nouveau_bios.c ++++ b/drivers/gpu/drm/nouveau/nouveau_bios.c +@@ -5329,7 +5329,7 @@ parse_bit_U_tbl_entry(struct drm_device *dev, struct nvbios *bios, + struct bit_table { + const char id; + int (* const parse_fn)(struct drm_device *, struct nvbios *, struct bit_entry *); +-}; ++} __no_const; + + #define BIT_TABLE(id, funcid) ((struct bit_table){ id, parse_bit_##funcid##_tbl_entry }) + +diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h +index 3aef353..0ad1322 100644 +--- a/drivers/gpu/drm/nouveau/nouveau_drv.h ++++ b/drivers/gpu/drm/nouveau/nouveau_drv.h +@@ -240,7 +240,7 @@ struct nouveau_channel { + struct list_head pending; + uint32_t sequence; + uint32_t sequence_ack; +- atomic_t last_sequence_irq; ++ atomic_unchecked_t last_sequence_irq; + struct nouveau_vma vma; + } fence; + +@@ -321,7 +321,7 @@ struct nouveau_exec_engine { + u32 handle, u16 class); + void (*set_tile_region)(struct drm_device *dev, int i); + void (*tlb_flush)(struct drm_device *, int engine); +-}; ++} __no_const; + + struct nouveau_instmem_engine { + void *priv; +@@ -343,13 +343,13 @@ struct nouveau_instmem_engine { + struct nouveau_mc_engine { + int (*init)(struct drm_device *dev); + void (*takedown)(struct drm_device *dev); +-}; ++} __no_const; + + struct nouveau_timer_engine { + int (*init)(struct drm_device *dev); + void (*takedown)(struct drm_device *dev); + uint64_t (*read)(struct drm_device *dev); +-}; ++} __no_const; + + struct nouveau_fb_engine { + int num_tiles; +@@ -590,7 +590,7 @@ struct nouveau_vram_engine { + void (*put)(struct drm_device *, struct nouveau_mem **); + + bool (*flags_valid)(struct drm_device *, u32 tile_flags); +-}; ++} __no_const; + + struct nouveau_engine { + struct nouveau_instmem_engine instmem; +@@ -739,7 +739,7 @@ struct drm_nouveau_private { + struct drm_global_reference mem_global_ref; + struct ttm_bo_global_ref bo_global_ref; + struct ttm_bo_device bdev; +- atomic_t validate_sequence; ++ atomic_unchecked_t validate_sequence; + } ttm; + + struct { +diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c +index c1dc20f..4df673c 100644 +--- a/drivers/gpu/drm/nouveau/nouveau_fence.c ++++ b/drivers/gpu/drm/nouveau/nouveau_fence.c +@@ -85,7 +85,7 @@ nouveau_fence_update(struct nouveau_channel *chan) + if (USE_REFCNT(dev)) + sequence = nvchan_rd32(chan, 0x48); + else +- sequence = atomic_read(&chan->fence.last_sequence_irq); ++ sequence = atomic_read_unchecked(&chan->fence.last_sequence_irq); + + if (chan->fence.sequence_ack == sequence) + goto out; +@@ -538,7 +538,7 @@ nouveau_fence_channel_init(struct nouveau_channel *chan) + return ret; + } + +- atomic_set(&chan->fence.last_sequence_irq, 0); ++ atomic_set_unchecked(&chan->fence.last_sequence_irq, 0); + return 0; + } + +diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c +index ed52a6f..484acdc 100644 +--- a/drivers/gpu/drm/nouveau/nouveau_gem.c ++++ b/drivers/gpu/drm/nouveau/nouveau_gem.c +@@ -314,7 +314,7 @@ validate_init(struct nouveau_channel *chan, struct drm_file *file_priv, + int trycnt = 0; + int ret, i; + +- sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence); ++ sequence = atomic_add_return_unchecked(1, &dev_priv->ttm.validate_sequence); + retry: + if (++trycnt > 100000) { + NV_ERROR(dev, "%s failed and gave up.\n", __func__); +diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c +index c2a8511..4b996f9 100644 +--- a/drivers/gpu/drm/nouveau/nouveau_state.c ++++ b/drivers/gpu/drm/nouveau/nouveau_state.c +@@ -588,7 +588,7 @@ static bool nouveau_switcheroo_can_switch(struct pci_dev *pdev) + bool can_switch; + + spin_lock(&dev->count_lock); +- can_switch = (dev->open_count == 0); ++ can_switch = (local_read(&dev->open_count) == 0); + spin_unlock(&dev->count_lock); + return can_switch; + } +diff --git a/drivers/gpu/drm/nouveau/nv04_graph.c b/drivers/gpu/drm/nouveau/nv04_graph.c +index dbdea8e..cd6eeeb 100644 +--- a/drivers/gpu/drm/nouveau/nv04_graph.c ++++ b/drivers/gpu/drm/nouveau/nv04_graph.c +@@ -554,7 +554,7 @@ static int + nv04_graph_mthd_set_ref(struct nouveau_channel *chan, + u32 class, u32 mthd, u32 data) + { +- atomic_set(&chan->fence.last_sequence_irq, data); ++ atomic_set_unchecked(&chan->fence.last_sequence_irq, data); + return 0; + } + +diff --git a/drivers/gpu/drm/nouveau/nv50_sor.c b/drivers/gpu/drm/nouveau/nv50_sor.c +index 2746402..c8dc4a4 100644 +--- a/drivers/gpu/drm/nouveau/nv50_sor.c ++++ b/drivers/gpu/drm/nouveau/nv50_sor.c +@@ -304,7 +304,7 @@ nv50_sor_dpms(struct drm_encoder *encoder, int mode) + } + + if (nv_encoder->dcb->type == OUTPUT_DP) { +- struct dp_train_func func = { ++ static struct dp_train_func func = { + .link_set = nv50_sor_dp_link_set, + .train_set = nv50_sor_dp_train_set, + .train_adj = nv50_sor_dp_train_adj +diff --git a/drivers/gpu/drm/nouveau/nvd0_display.c b/drivers/gpu/drm/nouveau/nvd0_display.c +index 0247250..d2f6aaf 100644 +--- a/drivers/gpu/drm/nouveau/nvd0_display.c ++++ b/drivers/gpu/drm/nouveau/nvd0_display.c +@@ -1366,7 +1366,7 @@ nvd0_sor_dpms(struct drm_encoder *encoder, int mode) + nv_wait(dev, 0x61c030 + (or * 0x0800), 0x10000000, 0x00000000); + + if (nv_encoder->dcb->type == OUTPUT_DP) { +- struct dp_train_func func = { ++ static struct dp_train_func func = { + .link_set = nvd0_sor_dp_link_set, + .train_set = nvd0_sor_dp_train_set, + .train_adj = nvd0_sor_dp_train_adj +diff --git a/drivers/gpu/drm/r128/r128_cce.c b/drivers/gpu/drm/r128/r128_cce.c +index bcac90b..53bfc76 100644 +--- a/drivers/gpu/drm/r128/r128_cce.c ++++ b/drivers/gpu/drm/r128/r128_cce.c +@@ -378,7 +378,7 @@ static int r128_do_init_cce(struct drm_device *dev, drm_r128_init_t *init) + + /* GH: Simple idle check. + */ +- atomic_set(&dev_priv->idle_count, 0); ++ atomic_set_unchecked(&dev_priv->idle_count, 0); + + /* We don't support anything other than bus-mastering ring mode, + * but the ring can be in either AGP or PCI space for the ring +diff --git a/drivers/gpu/drm/r128/r128_drv.h b/drivers/gpu/drm/r128/r128_drv.h +index 930c71b..499aded 100644 +--- a/drivers/gpu/drm/r128/r128_drv.h ++++ b/drivers/gpu/drm/r128/r128_drv.h +@@ -90,14 +90,14 @@ typedef struct drm_r128_private { + int is_pci; + unsigned long cce_buffers_offset; + +- atomic_t idle_count; ++ atomic_unchecked_t idle_count; + + int page_flipping; + int current_page; + u32 crtc_offset; + u32 crtc_offset_cntl; + +- atomic_t vbl_received; ++ atomic_unchecked_t vbl_received; + + u32 color_fmt; + unsigned int front_offset; +diff --git a/drivers/gpu/drm/r128/r128_irq.c b/drivers/gpu/drm/r128/r128_irq.c +index 429d5a0..7e899ed 100644 +--- a/drivers/gpu/drm/r128/r128_irq.c ++++ b/drivers/gpu/drm/r128/r128_irq.c +@@ -42,7 +42,7 @@ u32 r128_get_vblank_counter(struct drm_device *dev, int crtc) + if (crtc != 0) + return 0; + +- return atomic_read(&dev_priv->vbl_received); ++ return atomic_read_unchecked(&dev_priv->vbl_received); + } + + irqreturn_t r128_driver_irq_handler(DRM_IRQ_ARGS) +@@ -56,7 +56,7 @@ irqreturn_t r128_driver_irq_handler(DRM_IRQ_ARGS) + /* VBLANK interrupt */ + if (status & R128_CRTC_VBLANK_INT) { + R128_WRITE(R128_GEN_INT_STATUS, R128_CRTC_VBLANK_INT_AK); +- atomic_inc(&dev_priv->vbl_received); ++ atomic_inc_unchecked(&dev_priv->vbl_received); + drm_handle_vblank(dev, 0); + return IRQ_HANDLED; + } +diff --git a/drivers/gpu/drm/r128/r128_state.c b/drivers/gpu/drm/r128/r128_state.c +index a9e33ce..09edd4b 100644 +--- a/drivers/gpu/drm/r128/r128_state.c ++++ b/drivers/gpu/drm/r128/r128_state.c +@@ -321,10 +321,10 @@ static void r128_clear_box(drm_r128_private_t *dev_priv, + + static void r128_cce_performance_boxes(drm_r128_private_t *dev_priv) + { +- if (atomic_read(&dev_priv->idle_count) == 0) ++ if (atomic_read_unchecked(&dev_priv->idle_count) == 0) + r128_clear_box(dev_priv, 64, 4, 8, 8, 0, 255, 0); + else +- atomic_set(&dev_priv->idle_count, 0); ++ atomic_set_unchecked(&dev_priv->idle_count, 0); + } + + #endif +diff --git a/drivers/gpu/drm/radeon/mkregtable.c b/drivers/gpu/drm/radeon/mkregtable.c +index 5a82b6b..9e69c73 100644 +--- a/drivers/gpu/drm/radeon/mkregtable.c ++++ b/drivers/gpu/drm/radeon/mkregtable.c +@@ -637,14 +637,14 @@ static int parser_auth(struct table *t, const char *filename) + regex_t mask_rex; + regmatch_t match[4]; + char buf[1024]; +- size_t end; ++ long end; + int len; + int done = 0; + int r; + unsigned o; + struct offset *offset; + char last_reg_s[10]; +- int last_reg; ++ unsigned long last_reg; + + if (regcomp + (&mask_rex, "(0x[0-9a-fA-F]*) *([_a-zA-Z0-9]*)", REG_EXTENDED)) { +diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h +index 138b952..d74f9cb 100644 +--- a/drivers/gpu/drm/radeon/radeon.h ++++ b/drivers/gpu/drm/radeon/radeon.h +@@ -253,7 +253,7 @@ struct radeon_fence_driver { + uint32_t scratch_reg; + uint64_t gpu_addr; + volatile uint32_t *cpu_addr; +- atomic_t seq; ++ atomic_unchecked_t seq; + uint32_t last_seq; + unsigned long last_jiffies; + unsigned long last_timeout; +@@ -753,7 +753,7 @@ struct r600_blit_cp_primitives { + int x2, int y2); + void (*draw_auto)(struct radeon_device *rdev); + void (*set_default_state)(struct radeon_device *rdev); +-}; ++} __no_const; + + struct r600_blit { + struct mutex mutex; +@@ -1246,7 +1246,7 @@ struct radeon_asic { + u32 (*page_flip)(struct radeon_device *rdev, int crtc, u64 crtc_base); + void (*post_page_flip)(struct radeon_device *rdev, int crtc); + } pflip; +-}; ++} __no_const; + + /* + * Asic structures +diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c +index 5992502..c19c633 100644 +--- a/drivers/gpu/drm/radeon/radeon_device.c ++++ b/drivers/gpu/drm/radeon/radeon_device.c +@@ -691,7 +691,7 @@ static bool radeon_switcheroo_can_switch(struct pci_dev *pdev) + bool can_switch; + + spin_lock(&dev->count_lock); +- can_switch = (dev->open_count == 0); ++ can_switch = (local_read(&dev->open_count) == 0); + spin_unlock(&dev->count_lock); + return can_switch; + } +diff --git a/drivers/gpu/drm/radeon/radeon_drv.h b/drivers/gpu/drm/radeon/radeon_drv.h +index a1b59ca..86f2d44 100644 +--- a/drivers/gpu/drm/radeon/radeon_drv.h ++++ b/drivers/gpu/drm/radeon/radeon_drv.h +@@ -255,7 +255,7 @@ typedef struct drm_radeon_private { + + /* SW interrupt */ + wait_queue_head_t swi_queue; +- atomic_t swi_emitted; ++ atomic_unchecked_t swi_emitted; + int vblank_crtc; + uint32_t irq_enable_reg; + uint32_t r500_disp_irq_reg; +diff --git a/drivers/gpu/drm/radeon/radeon_fence.c b/drivers/gpu/drm/radeon/radeon_fence.c +index 4bd36a3..e66fe9c 100644 +--- a/drivers/gpu/drm/radeon/radeon_fence.c ++++ b/drivers/gpu/drm/radeon/radeon_fence.c +@@ -70,7 +70,7 @@ int radeon_fence_emit(struct radeon_device *rdev, struct radeon_fence *fence) + write_unlock_irqrestore(&rdev->fence_lock, irq_flags); + return 0; + } +- fence->seq = atomic_add_return(1, &rdev->fence_drv[fence->ring].seq); ++ fence->seq = atomic_add_return_unchecked(1, &rdev->fence_drv[fence->ring].seq); + if (!rdev->ring[fence->ring].ready) + /* FIXME: cp is not running assume everythings is done right + * away +@@ -405,7 +405,7 @@ int radeon_fence_driver_start_ring(struct radeon_device *rdev, int ring) + } + rdev->fence_drv[ring].cpu_addr = &rdev->wb.wb[index/4]; + rdev->fence_drv[ring].gpu_addr = rdev->wb.gpu_addr + index; +- radeon_fence_write(rdev, atomic_read(&rdev->fence_drv[ring].seq), ring); ++ radeon_fence_write(rdev, atomic_read_unchecked(&rdev->fence_drv[ring].seq), ring); + rdev->fence_drv[ring].initialized = true; + DRM_INFO("fence driver on ring %d use gpu addr 0x%08Lx and cpu addr 0x%p\n", + ring, rdev->fence_drv[ring].gpu_addr, rdev->fence_drv[ring].cpu_addr); +@@ -418,7 +418,7 @@ static void radeon_fence_driver_init_ring(struct radeon_device *rdev, int ring) + rdev->fence_drv[ring].scratch_reg = -1; + rdev->fence_drv[ring].cpu_addr = NULL; + rdev->fence_drv[ring].gpu_addr = 0; +- atomic_set(&rdev->fence_drv[ring].seq, 0); ++ atomic_set_unchecked(&rdev->fence_drv[ring].seq, 0); + INIT_LIST_HEAD(&rdev->fence_drv[ring].created); + INIT_LIST_HEAD(&rdev->fence_drv[ring].emitted); + INIT_LIST_HEAD(&rdev->fence_drv[ring].signaled); +diff --git a/drivers/gpu/drm/radeon/radeon_ioc32.c b/drivers/gpu/drm/radeon/radeon_ioc32.c +index 48b7cea..342236f 100644 +--- a/drivers/gpu/drm/radeon/radeon_ioc32.c ++++ b/drivers/gpu/drm/radeon/radeon_ioc32.c +@@ -359,7 +359,7 @@ static int compat_radeon_cp_setparam(struct file *file, unsigned int cmd, + request = compat_alloc_user_space(sizeof(*request)); + if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) + || __put_user(req32.param, &request->param) +- || __put_user((void __user *)(unsigned long)req32.value, ++ || __put_user((unsigned long)req32.value, + &request->value)) + return -EFAULT; + +diff --git a/drivers/gpu/drm/radeon/radeon_irq.c b/drivers/gpu/drm/radeon/radeon_irq.c +index 00da384..32f972d 100644 +--- a/drivers/gpu/drm/radeon/radeon_irq.c ++++ b/drivers/gpu/drm/radeon/radeon_irq.c +@@ -225,8 +225,8 @@ static int radeon_emit_irq(struct drm_device * dev) + unsigned int ret; + RING_LOCALS; + +- atomic_inc(&dev_priv->swi_emitted); +- ret = atomic_read(&dev_priv->swi_emitted); ++ atomic_inc_unchecked(&dev_priv->swi_emitted); ++ ret = atomic_read_unchecked(&dev_priv->swi_emitted); + + BEGIN_RING(4); + OUT_RING_REG(RADEON_LAST_SWI_REG, ret); +@@ -352,7 +352,7 @@ int radeon_driver_irq_postinstall(struct drm_device *dev) + drm_radeon_private_t *dev_priv = + (drm_radeon_private_t *) dev->dev_private; + +- atomic_set(&dev_priv->swi_emitted, 0); ++ atomic_set_unchecked(&dev_priv->swi_emitted, 0); + DRM_INIT_WAITQUEUE(&dev_priv->swi_queue); + + dev->max_vblank_count = 0x001fffff; +diff --git a/drivers/gpu/drm/radeon/radeon_state.c b/drivers/gpu/drm/radeon/radeon_state.c +index e8422ae..d22d4a8 100644 +--- a/drivers/gpu/drm/radeon/radeon_state.c ++++ b/drivers/gpu/drm/radeon/radeon_state.c +@@ -2168,7 +2168,7 @@ static int radeon_cp_clear(struct drm_device *dev, void *data, struct drm_file * + if (sarea_priv->nbox > RADEON_NR_SAREA_CLIPRECTS) + sarea_priv->nbox = RADEON_NR_SAREA_CLIPRECTS; + +- if (DRM_COPY_FROM_USER(&depth_boxes, clear->depth_boxes, ++ if (sarea_priv->nbox > RADEON_NR_SAREA_CLIPRECTS || DRM_COPY_FROM_USER(&depth_boxes, clear->depth_boxes, + sarea_priv->nbox * sizeof(depth_boxes[0]))) + return -EFAULT; + +@@ -3031,7 +3031,7 @@ static int radeon_cp_getparam(struct drm_device *dev, void *data, struct drm_fil + { + drm_radeon_private_t *dev_priv = dev->dev_private; + drm_radeon_getparam_t *param = data; +- int value; ++ int value = 0; + + DRM_DEBUG("pid=%d\n", DRM_CURRENTPID); + +diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c +index f493c64..524ab6b 100644 +--- a/drivers/gpu/drm/radeon/radeon_ttm.c ++++ b/drivers/gpu/drm/radeon/radeon_ttm.c +@@ -843,8 +843,10 @@ int radeon_mmap(struct file *filp, struct vm_area_struct *vma) + } + if (unlikely(ttm_vm_ops == NULL)) { + ttm_vm_ops = vma->vm_ops; +- radeon_ttm_vm_ops = *ttm_vm_ops; +- radeon_ttm_vm_ops.fault = &radeon_ttm_fault; ++ pax_open_kernel(); ++ memcpy((void *)&radeon_ttm_vm_ops, ttm_vm_ops, sizeof(radeon_ttm_vm_ops)); ++ *(void **)&radeon_ttm_vm_ops.fault = &radeon_ttm_fault; ++ pax_close_kernel(); + } + vma->vm_ops = &radeon_ttm_vm_ops; + return 0; +diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c +index f2c3b9d..d5a376b 100644 +--- a/drivers/gpu/drm/radeon/rs690.c ++++ b/drivers/gpu/drm/radeon/rs690.c +@@ -304,9 +304,11 @@ void rs690_crtc_bandwidth_compute(struct radeon_device *rdev, + if (rdev->pm.max_bandwidth.full > rdev->pm.sideport_bandwidth.full && + rdev->pm.sideport_bandwidth.full) + rdev->pm.max_bandwidth = rdev->pm.sideport_bandwidth; +- read_delay_latency.full = dfixed_const(370 * 800 * 1000); ++ read_delay_latency.full = dfixed_const(800 * 1000); + read_delay_latency.full = dfixed_div(read_delay_latency, + rdev->pm.igp_sideport_mclk); ++ a.full = dfixed_const(370); ++ read_delay_latency.full = dfixed_mul(read_delay_latency, a); + } else { + if (rdev->pm.max_bandwidth.full > rdev->pm.k8_bandwidth.full && + rdev->pm.k8_bandwidth.full) +diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c +index ebc6fac..a8313ed 100644 +--- a/drivers/gpu/drm/ttm/ttm_page_alloc.c ++++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c +@@ -394,9 +394,9 @@ static int ttm_pool_get_num_unused_pages(void) + static int ttm_pool_mm_shrink(struct shrinker *shrink, + struct shrink_control *sc) + { +- static atomic_t start_pool = ATOMIC_INIT(0); ++ static atomic_unchecked_t start_pool = ATOMIC_INIT(0); + unsigned i; +- unsigned pool_offset = atomic_add_return(1, &start_pool); ++ unsigned pool_offset = atomic_add_return_unchecked(1, &start_pool); + struct ttm_page_pool *pool; + int shrink_pages = sc->nr_to_scan; + +diff --git a/drivers/gpu/drm/via/via_drv.h b/drivers/gpu/drm/via/via_drv.h +index 88edacc..1e5412b 100644 +--- a/drivers/gpu/drm/via/via_drv.h ++++ b/drivers/gpu/drm/via/via_drv.h +@@ -51,7 +51,7 @@ typedef struct drm_via_ring_buffer { + typedef uint32_t maskarray_t[5]; + + typedef struct drm_via_irq { +- atomic_t irq_received; ++ atomic_unchecked_t irq_received; + uint32_t pending_mask; + uint32_t enable_mask; + wait_queue_head_t irq_queue; +@@ -75,7 +75,7 @@ typedef struct drm_via_private { + struct timeval last_vblank; + int last_vblank_valid; + unsigned usec_per_vblank; +- atomic_t vbl_received; ++ atomic_unchecked_t vbl_received; + drm_via_state_t hc_state; + char pci_buf[VIA_PCI_BUF_SIZE]; + const uint32_t *fire_offsets[VIA_FIRE_BUF_SIZE]; +diff --git a/drivers/gpu/drm/via/via_irq.c b/drivers/gpu/drm/via/via_irq.c +index d391f48..10c8ca3 100644 +--- a/drivers/gpu/drm/via/via_irq.c ++++ b/drivers/gpu/drm/via/via_irq.c +@@ -102,7 +102,7 @@ u32 via_get_vblank_counter(struct drm_device *dev, int crtc) + if (crtc != 0) + return 0; + +- return atomic_read(&dev_priv->vbl_received); ++ return atomic_read_unchecked(&dev_priv->vbl_received); + } + + irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS) +@@ -117,8 +117,8 @@ irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS) + + status = VIA_READ(VIA_REG_INTERRUPT); + if (status & VIA_IRQ_VBLANK_PENDING) { +- atomic_inc(&dev_priv->vbl_received); +- if (!(atomic_read(&dev_priv->vbl_received) & 0x0F)) { ++ atomic_inc_unchecked(&dev_priv->vbl_received); ++ if (!(atomic_read_unchecked(&dev_priv->vbl_received) & 0x0F)) { + do_gettimeofday(&cur_vblank); + if (dev_priv->last_vblank_valid) { + dev_priv->usec_per_vblank = +@@ -128,7 +128,7 @@ irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS) + dev_priv->last_vblank = cur_vblank; + dev_priv->last_vblank_valid = 1; + } +- if (!(atomic_read(&dev_priv->vbl_received) & 0xFF)) { ++ if (!(atomic_read_unchecked(&dev_priv->vbl_received) & 0xFF)) { + DRM_DEBUG("US per vblank is: %u\n", + dev_priv->usec_per_vblank); + } +@@ -138,7 +138,7 @@ irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS) + + for (i = 0; i < dev_priv->num_irqs; ++i) { + if (status & cur_irq->pending_mask) { +- atomic_inc(&cur_irq->irq_received); ++ atomic_inc_unchecked(&cur_irq->irq_received); + DRM_WAKEUP(&cur_irq->irq_queue); + handled = 1; + if (dev_priv->irq_map[drm_via_irq_dma0_td] == i) +@@ -243,11 +243,11 @@ via_driver_irq_wait(struct drm_device *dev, unsigned int irq, int force_sequence + DRM_WAIT_ON(ret, cur_irq->irq_queue, 3 * DRM_HZ, + ((VIA_READ(masks[irq][2]) & masks[irq][3]) == + masks[irq][4])); +- cur_irq_sequence = atomic_read(&cur_irq->irq_received); ++ cur_irq_sequence = atomic_read_unchecked(&cur_irq->irq_received); + } else { + DRM_WAIT_ON(ret, cur_irq->irq_queue, 3 * DRM_HZ, + (((cur_irq_sequence = +- atomic_read(&cur_irq->irq_received)) - ++ atomic_read_unchecked(&cur_irq->irq_received)) - + *sequence) <= (1 << 23))); + } + *sequence = cur_irq_sequence; +@@ -285,7 +285,7 @@ void via_driver_irq_preinstall(struct drm_device *dev) + } + + for (i = 0; i < dev_priv->num_irqs; ++i) { +- atomic_set(&cur_irq->irq_received, 0); ++ atomic_set_unchecked(&cur_irq->irq_received, 0); + cur_irq->enable_mask = dev_priv->irq_masks[i][0]; + cur_irq->pending_mask = dev_priv->irq_masks[i][1]; + DRM_INIT_WAITQUEUE(&cur_irq->irq_queue); +@@ -367,7 +367,7 @@ int via_wait_irq(struct drm_device *dev, void *data, struct drm_file *file_priv) + switch (irqwait->request.type & ~VIA_IRQ_FLAGS_MASK) { + case VIA_IRQ_RELATIVE: + irqwait->request.sequence += +- atomic_read(&cur_irq->irq_received); ++ atomic_read_unchecked(&cur_irq->irq_received); + irqwait->request.type &= ~_DRM_VBLANK_RELATIVE; + case VIA_IRQ_ABSOLUTE: + break; +diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h +index d0f2c07..9ebd9c3 100644 +--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h ++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h +@@ -263,7 +263,7 @@ struct vmw_private { + * Fencing and IRQs. + */ + +- atomic_t marker_seq; ++ atomic_unchecked_t marker_seq; + wait_queue_head_t fence_queue; + wait_queue_head_t fifo_queue; + int fence_queue_waiters; /* Protected by hw_mutex */ +diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c +index a0c2f12..68ae6cb 100644 +--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c ++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c +@@ -137,7 +137,7 @@ int vmw_fifo_init(struct vmw_private *dev_priv, struct vmw_fifo_state *fifo) + (unsigned int) min, + (unsigned int) fifo->capabilities); + +- atomic_set(&dev_priv->marker_seq, dev_priv->last_read_seqno); ++ atomic_set_unchecked(&dev_priv->marker_seq, dev_priv->last_read_seqno); + iowrite32(dev_priv->last_read_seqno, fifo_mem + SVGA_FIFO_FENCE); + vmw_marker_queue_init(&fifo->marker_queue); + return vmw_fifo_send_fence(dev_priv, &dummy); +@@ -355,7 +355,7 @@ void *vmw_fifo_reserve(struct vmw_private *dev_priv, uint32_t bytes) + if (reserveable) + iowrite32(bytes, fifo_mem + + SVGA_FIFO_RESERVED); +- return fifo_mem + (next_cmd >> 2); ++ return (__le32 __force_kernel *)fifo_mem + (next_cmd >> 2); + } else { + need_bounce = true; + } +@@ -475,7 +475,7 @@ int vmw_fifo_send_fence(struct vmw_private *dev_priv, uint32_t *seqno) + + fm = vmw_fifo_reserve(dev_priv, bytes); + if (unlikely(fm == NULL)) { +- *seqno = atomic_read(&dev_priv->marker_seq); ++ *seqno = atomic_read_unchecked(&dev_priv->marker_seq); + ret = -ENOMEM; + (void)vmw_fallback_wait(dev_priv, false, true, *seqno, + false, 3*HZ); +@@ -483,7 +483,7 @@ int vmw_fifo_send_fence(struct vmw_private *dev_priv, uint32_t *seqno) + } + + do { +- *seqno = atomic_add_return(1, &dev_priv->marker_seq); ++ *seqno = atomic_add_return_unchecked(1, &dev_priv->marker_seq); + } while (*seqno == 0); + + if (!(fifo_state->capabilities & SVGA_FIFO_CAP_FENCE)) { +diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c b/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c +index cabc95f..14b3d77 100644 +--- a/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c ++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c +@@ -107,7 +107,7 @@ bool vmw_seqno_passed(struct vmw_private *dev_priv, + * emitted. Then the fence is stale and signaled. + */ + +- ret = ((atomic_read(&dev_priv->marker_seq) - seqno) ++ ret = ((atomic_read_unchecked(&dev_priv->marker_seq) - seqno) + > VMW_FENCE_WRAP); + + return ret; +@@ -138,7 +138,7 @@ int vmw_fallback_wait(struct vmw_private *dev_priv, + + if (fifo_idle) + down_read(&fifo_state->rwsem); +- signal_seq = atomic_read(&dev_priv->marker_seq); ++ signal_seq = atomic_read_unchecked(&dev_priv->marker_seq); + ret = 0; + + for (;;) { +diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c b/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c +index 8a8725c..afed796 100644 +--- a/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c ++++ b/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c +@@ -151,7 +151,7 @@ int vmw_wait_lag(struct vmw_private *dev_priv, + while (!vmw_lag_lt(queue, us)) { + spin_lock(&queue->lock); + if (list_empty(&queue->head)) +- seqno = atomic_read(&dev_priv->marker_seq); ++ seqno = atomic_read_unchecked(&dev_priv->marker_seq); + else { + marker = list_first_entry(&queue->head, + struct vmw_marker, head); +diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c +index 4da66b4..e948655 100644 +--- a/drivers/hid/hid-core.c ++++ b/drivers/hid/hid-core.c +@@ -2063,7 +2063,7 @@ static bool hid_ignore(struct hid_device *hdev) + + int hid_add_device(struct hid_device *hdev) + { +- static atomic_t id = ATOMIC_INIT(0); ++ static atomic_unchecked_t id = ATOMIC_INIT(0); + int ret; + + if (WARN_ON(hdev->status & HID_STAT_ADDED)) +@@ -2078,7 +2078,7 @@ int hid_add_device(struct hid_device *hdev) + /* XXX hack, any other cleaner solution after the driver core + * is converted to allow more than 20 bytes as the device name? */ + dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus, +- hdev->vendor, hdev->product, atomic_inc_return(&id)); ++ hdev->vendor, hdev->product, atomic_inc_return_unchecked(&id)); + + hid_debug_register(hdev, dev_name(&hdev->dev)); + ret = device_add(&hdev->dev); +diff --git a/drivers/hid/hid-wiimote-debug.c b/drivers/hid/hid-wiimote-debug.c +index eec3291..8ed706b 100644 +--- a/drivers/hid/hid-wiimote-debug.c ++++ b/drivers/hid/hid-wiimote-debug.c +@@ -66,7 +66,7 @@ static ssize_t wiidebug_eeprom_read(struct file *f, char __user *u, size_t s, + else if (size == 0) + return -EIO; + +- if (copy_to_user(u, buf, size)) ++ if (size > sizeof(buf) || copy_to_user(u, buf, size)) + return -EFAULT; + + *off += size; +diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c +index b1ec0e2..c295a61 100644 +--- a/drivers/hid/usbhid/hiddev.c ++++ b/drivers/hid/usbhid/hiddev.c +@@ -624,7 +624,7 @@ static long hiddev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) + break; + + case HIDIOCAPPLICATION: +- if (arg < 0 || arg >= hid->maxapplication) ++ if (arg >= hid->maxapplication) + break; + + for (i = 0; i < hid->maxcollection; i++) +diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c +index 4065374..10ed7dc 100644 +--- a/drivers/hv/channel.c ++++ b/drivers/hv/channel.c +@@ -400,8 +400,8 @@ int vmbus_establish_gpadl(struct vmbus_channel *channel, void *kbuffer, + int ret = 0; + int t; + +- next_gpadl_handle = atomic_read(&vmbus_connection.next_gpadl_handle); +- atomic_inc(&vmbus_connection.next_gpadl_handle); ++ next_gpadl_handle = atomic_read_unchecked(&vmbus_connection.next_gpadl_handle); ++ atomic_inc_unchecked(&vmbus_connection.next_gpadl_handle); + + ret = create_gpadl_header(kbuffer, size, &msginfo, &msgcount); + if (ret) +diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c +index 15956bd..ea34398 100644 +--- a/drivers/hv/hv.c ++++ b/drivers/hv/hv.c +@@ -132,7 +132,7 @@ static u64 do_hypercall(u64 control, void *input, void *output) + u64 output_address = (output) ? virt_to_phys(output) : 0; + u32 output_address_hi = output_address >> 32; + u32 output_address_lo = output_address & 0xFFFFFFFF; +- void *hypercall_page = hv_context.hypercall_page; ++ void *hypercall_page = ktva_ktla(hv_context.hypercall_page); + + __asm__ __volatile__ ("call *%8" : "=d"(hv_status_hi), + "=a"(hv_status_lo) : "d" (control_hi), +diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h +index 699f0d8..f4f19250 100644 +--- a/drivers/hv/hyperv_vmbus.h ++++ b/drivers/hv/hyperv_vmbus.h +@@ -555,7 +555,7 @@ enum vmbus_connect_state { + struct vmbus_connection { + enum vmbus_connect_state conn_state; + +- atomic_t next_gpadl_handle; ++ atomic_unchecked_t next_gpadl_handle; + + /* + * Represents channel interrupts. Each bit position represents a +diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c +index a220e57..428f54d 100644 +--- a/drivers/hv/vmbus_drv.c ++++ b/drivers/hv/vmbus_drv.c +@@ -663,10 +663,10 @@ int vmbus_device_register(struct hv_device *child_device_obj) + { + int ret = 0; + +- static atomic_t device_num = ATOMIC_INIT(0); ++ static atomic_unchecked_t device_num = ATOMIC_INIT(0); + + dev_set_name(&child_device_obj->device, "vmbus_0_%d", +- atomic_inc_return(&device_num)); ++ atomic_inc_return_unchecked(&device_num)); + + child_device_obj->device.bus = &hv_bus; + child_device_obj->device.parent = &hv_acpi_dev->dev; +diff --git a/drivers/hwmon/acpi_power_meter.c b/drivers/hwmon/acpi_power_meter.c +index 9140236..ceaef4e 100644 +--- a/drivers/hwmon/acpi_power_meter.c ++++ b/drivers/hwmon/acpi_power_meter.c +@@ -316,8 +316,6 @@ static ssize_t set_trip(struct device *dev, struct device_attribute *devattr, + return res; + + temp /= 1000; +- if (temp < 0) +- return -EINVAL; + + mutex_lock(&resource->lock); + resource->trip[attr->index - 7] = temp; +diff --git a/drivers/hwmon/sht15.c b/drivers/hwmon/sht15.c +index 8b011d0..3de24a1 100644 +--- a/drivers/hwmon/sht15.c ++++ b/drivers/hwmon/sht15.c +@@ -166,7 +166,7 @@ struct sht15_data { + int supply_uV; + bool supply_uV_valid; + struct work_struct update_supply_work; +- atomic_t interrupt_handled; ++ atomic_unchecked_t interrupt_handled; + }; + + /** +@@ -509,13 +509,13 @@ static int sht15_measurement(struct sht15_data *data, + return ret; + + gpio_direction_input(data->pdata->gpio_data); +- atomic_set(&data->interrupt_handled, 0); ++ atomic_set_unchecked(&data->interrupt_handled, 0); + + enable_irq(gpio_to_irq(data->pdata->gpio_data)); + if (gpio_get_value(data->pdata->gpio_data) == 0) { + disable_irq_nosync(gpio_to_irq(data->pdata->gpio_data)); + /* Only relevant if the interrupt hasn't occurred. */ +- if (!atomic_read(&data->interrupt_handled)) ++ if (!atomic_read_unchecked(&data->interrupt_handled)) + schedule_work(&data->read_work); + } + ret = wait_event_timeout(data->wait_queue, +@@ -782,7 +782,7 @@ static irqreturn_t sht15_interrupt_fired(int irq, void *d) + + /* First disable the interrupt */ + disable_irq_nosync(irq); +- atomic_inc(&data->interrupt_handled); ++ atomic_inc_unchecked(&data->interrupt_handled); + /* Then schedule a reading work struct */ + if (data->state != SHT15_READING_NOTHING) + schedule_work(&data->read_work); +@@ -804,11 +804,11 @@ static void sht15_bh_read_data(struct work_struct *work_s) + * If not, then start the interrupt again - care here as could + * have gone low in meantime so verify it hasn't! + */ +- atomic_set(&data->interrupt_handled, 0); ++ atomic_set_unchecked(&data->interrupt_handled, 0); + enable_irq(gpio_to_irq(data->pdata->gpio_data)); + /* If still not occurred or another handler was scheduled */ + if (gpio_get_value(data->pdata->gpio_data) +- || atomic_read(&data->interrupt_handled)) ++ || atomic_read_unchecked(&data->interrupt_handled)) + return; + } + +diff --git a/drivers/i2c/busses/i2c-amd756-s4882.c b/drivers/i2c/busses/i2c-amd756-s4882.c +index 378fcb5..5e91fa8 100644 +--- a/drivers/i2c/busses/i2c-amd756-s4882.c ++++ b/drivers/i2c/busses/i2c-amd756-s4882.c +@@ -43,7 +43,7 @@ + extern struct i2c_adapter amd756_smbus; + + static struct i2c_adapter *s4882_adapter; +-static struct i2c_algorithm *s4882_algo; ++static i2c_algorithm_no_const *s4882_algo; + + /* Wrapper access functions for multiplexed SMBus */ + static DEFINE_MUTEX(amd756_lock); +diff --git a/drivers/i2c/busses/i2c-nforce2-s4985.c b/drivers/i2c/busses/i2c-nforce2-s4985.c +index 29015eb..af2d8e9 100644 +--- a/drivers/i2c/busses/i2c-nforce2-s4985.c ++++ b/drivers/i2c/busses/i2c-nforce2-s4985.c +@@ -41,7 +41,7 @@ + extern struct i2c_adapter *nforce2_smbus; + + static struct i2c_adapter *s4985_adapter; +-static struct i2c_algorithm *s4985_algo; ++static i2c_algorithm_no_const *s4985_algo; + + /* Wrapper access functions for multiplexed SMBus */ + static DEFINE_MUTEX(nforce2_lock); +diff --git a/drivers/i2c/i2c-mux.c b/drivers/i2c/i2c-mux.c +index d7a4833..7fae376 100644 +--- a/drivers/i2c/i2c-mux.c ++++ b/drivers/i2c/i2c-mux.c +@@ -28,7 +28,7 @@ + /* multiplexer per channel data */ + struct i2c_mux_priv { + struct i2c_adapter adap; +- struct i2c_algorithm algo; ++ i2c_algorithm_no_const algo; + + struct i2c_adapter *parent; + void *mux_dev; /* the mux chip/device */ +diff --git a/drivers/ide/aec62xx.c b/drivers/ide/aec62xx.c +index 57d00ca..0145194 100644 +--- a/drivers/ide/aec62xx.c ++++ b/drivers/ide/aec62xx.c +@@ -181,7 +181,7 @@ static const struct ide_port_ops atp86x_port_ops = { + .cable_detect = atp86x_cable_detect, + }; + +-static const struct ide_port_info aec62xx_chipsets[] __devinitdata = { ++static const struct ide_port_info aec62xx_chipsets[] __devinitconst = { + { /* 0: AEC6210 */ + .name = DRV_NAME, + .init_chipset = init_chipset_aec62xx, +diff --git a/drivers/ide/alim15x3.c b/drivers/ide/alim15x3.c +index 2c8016a..911a27c 100644 +--- a/drivers/ide/alim15x3.c ++++ b/drivers/ide/alim15x3.c +@@ -512,7 +512,7 @@ static const struct ide_dma_ops ali_dma_ops = { + .dma_sff_read_status = ide_dma_sff_read_status, + }; + +-static const struct ide_port_info ali15x3_chipset __devinitdata = { ++static const struct ide_port_info ali15x3_chipset __devinitconst = { + .name = DRV_NAME, + .init_chipset = init_chipset_ali15x3, + .init_hwif = init_hwif_ali15x3, +diff --git a/drivers/ide/amd74xx.c b/drivers/ide/amd74xx.c +index 3747b25..56fc995 100644 +--- a/drivers/ide/amd74xx.c ++++ b/drivers/ide/amd74xx.c +@@ -223,7 +223,7 @@ static const struct ide_port_ops amd_port_ops = { + .udma_mask = udma, \ + } + +-static const struct ide_port_info amd74xx_chipsets[] __devinitdata = { ++static const struct ide_port_info amd74xx_chipsets[] __devinitconst = { + /* 0: AMD7401 */ DECLARE_AMD_DEV(0x00, ATA_UDMA2), + /* 1: AMD7409 */ DECLARE_AMD_DEV(ATA_SWDMA2, ATA_UDMA4), + /* 2: AMD7411/7441 */ DECLARE_AMD_DEV(ATA_SWDMA2, ATA_UDMA5), +diff --git a/drivers/ide/atiixp.c b/drivers/ide/atiixp.c +index 15f0ead..cb43480 100644 +--- a/drivers/ide/atiixp.c ++++ b/drivers/ide/atiixp.c +@@ -139,7 +139,7 @@ static const struct ide_port_ops atiixp_port_ops = { + .cable_detect = atiixp_cable_detect, + }; + +-static const struct ide_port_info atiixp_pci_info[] __devinitdata = { ++static const struct ide_port_info atiixp_pci_info[] __devinitconst = { + { /* 0: IXP200/300/400/700 */ + .name = DRV_NAME, + .enablebits = {{0x48,0x01,0x00}, {0x48,0x08,0x00}}, +diff --git a/drivers/ide/cmd64x.c b/drivers/ide/cmd64x.c +index 5f80312..d1fc438 100644 +--- a/drivers/ide/cmd64x.c ++++ b/drivers/ide/cmd64x.c +@@ -327,7 +327,7 @@ static const struct ide_dma_ops cmd646_rev1_dma_ops = { + .dma_sff_read_status = ide_dma_sff_read_status, + }; + +-static const struct ide_port_info cmd64x_chipsets[] __devinitdata = { ++static const struct ide_port_info cmd64x_chipsets[] __devinitconst = { + { /* 0: CMD643 */ + .name = DRV_NAME, + .init_chipset = init_chipset_cmd64x, +diff --git a/drivers/ide/cs5520.c b/drivers/ide/cs5520.c +index 2c1e5f7..1444762 100644 +--- a/drivers/ide/cs5520.c ++++ b/drivers/ide/cs5520.c +@@ -94,7 +94,7 @@ static const struct ide_port_ops cs5520_port_ops = { + .set_dma_mode = cs5520_set_dma_mode, + }; + +-static const struct ide_port_info cyrix_chipset __devinitdata = { ++static const struct ide_port_info cyrix_chipset __devinitconst = { + .name = DRV_NAME, + .enablebits = { { 0x60, 0x01, 0x01 }, { 0x60, 0x02, 0x02 } }, + .port_ops = &cs5520_port_ops, +diff --git a/drivers/ide/cs5530.c b/drivers/ide/cs5530.c +index 4dc4eb9..49b40ad 100644 +--- a/drivers/ide/cs5530.c ++++ b/drivers/ide/cs5530.c +@@ -245,7 +245,7 @@ static const struct ide_port_ops cs5530_port_ops = { + .udma_filter = cs5530_udma_filter, + }; + +-static const struct ide_port_info cs5530_chipset __devinitdata = { ++static const struct ide_port_info cs5530_chipset __devinitconst = { + .name = DRV_NAME, + .init_chipset = init_chipset_cs5530, + .init_hwif = init_hwif_cs5530, +diff --git a/drivers/ide/cs5535.c b/drivers/ide/cs5535.c +index 5059faf..18d4c85 100644 +--- a/drivers/ide/cs5535.c ++++ b/drivers/ide/cs5535.c +@@ -170,7 +170,7 @@ static const struct ide_port_ops cs5535_port_ops = { + .cable_detect = cs5535_cable_detect, + }; + +-static const struct ide_port_info cs5535_chipset __devinitdata = { ++static const struct ide_port_info cs5535_chipset __devinitconst = { + .name = DRV_NAME, + .port_ops = &cs5535_port_ops, + .host_flags = IDE_HFLAG_SINGLE | IDE_HFLAG_POST_SET_MODE, +diff --git a/drivers/ide/cy82c693.c b/drivers/ide/cy82c693.c +index 847553f..3ffb49d 100644 +--- a/drivers/ide/cy82c693.c ++++ b/drivers/ide/cy82c693.c +@@ -163,7 +163,7 @@ static const struct ide_port_ops cy82c693_port_ops = { + .set_dma_mode = cy82c693_set_dma_mode, + }; + +-static const struct ide_port_info cy82c693_chipset __devinitdata = { ++static const struct ide_port_info cy82c693_chipset __devinitconst = { + .name = DRV_NAME, + .init_iops = init_iops_cy82c693, + .port_ops = &cy82c693_port_ops, +diff --git a/drivers/ide/hpt366.c b/drivers/ide/hpt366.c +index 58c51cd..4aec3b8 100644 +--- a/drivers/ide/hpt366.c ++++ b/drivers/ide/hpt366.c +@@ -443,7 +443,7 @@ static struct hpt_timings hpt37x_timings = { + } + }; + +-static const struct hpt_info hpt36x __devinitdata = { ++static const struct hpt_info hpt36x __devinitconst = { + .chip_name = "HPT36x", + .chip_type = HPT36x, + .udma_mask = HPT366_ALLOW_ATA66_3 ? (HPT366_ALLOW_ATA66_4 ? ATA_UDMA4 : ATA_UDMA3) : ATA_UDMA2, +@@ -451,7 +451,7 @@ static const struct hpt_info hpt36x __devinitdata = { + .timings = &hpt36x_timings + }; + +-static const struct hpt_info hpt370 __devinitdata = { ++static const struct hpt_info hpt370 __devinitconst = { + .chip_name = "HPT370", + .chip_type = HPT370, + .udma_mask = HPT370_ALLOW_ATA100_5 ? ATA_UDMA5 : ATA_UDMA4, +@@ -459,7 +459,7 @@ static const struct hpt_info hpt370 __devinitdata = { + .timings = &hpt37x_timings + }; + +-static const struct hpt_info hpt370a __devinitdata = { ++static const struct hpt_info hpt370a __devinitconst = { + .chip_name = "HPT370A", + .chip_type = HPT370A, + .udma_mask = HPT370_ALLOW_ATA100_5 ? ATA_UDMA5 : ATA_UDMA4, +@@ -467,7 +467,7 @@ static const struct hpt_info hpt370a __devinitdata = { + .timings = &hpt37x_timings + }; + +-static const struct hpt_info hpt374 __devinitdata = { ++static const struct hpt_info hpt374 __devinitconst = { + .chip_name = "HPT374", + .chip_type = HPT374, + .udma_mask = ATA_UDMA5, +@@ -475,7 +475,7 @@ static const struct hpt_info hpt374 __devinitdata = { + .timings = &hpt37x_timings + }; + +-static const struct hpt_info hpt372 __devinitdata = { ++static const struct hpt_info hpt372 __devinitconst = { + .chip_name = "HPT372", + .chip_type = HPT372, + .udma_mask = HPT372_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, +@@ -483,7 +483,7 @@ static const struct hpt_info hpt372 __devinitdata = { + .timings = &hpt37x_timings + }; + +-static const struct hpt_info hpt372a __devinitdata = { ++static const struct hpt_info hpt372a __devinitconst = { + .chip_name = "HPT372A", + .chip_type = HPT372A, + .udma_mask = HPT372_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, +@@ -491,7 +491,7 @@ static const struct hpt_info hpt372a __devinitdata = { + .timings = &hpt37x_timings + }; + +-static const struct hpt_info hpt302 __devinitdata = { ++static const struct hpt_info hpt302 __devinitconst = { + .chip_name = "HPT302", + .chip_type = HPT302, + .udma_mask = HPT302_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, +@@ -499,7 +499,7 @@ static const struct hpt_info hpt302 __devinitdata = { + .timings = &hpt37x_timings + }; + +-static const struct hpt_info hpt371 __devinitdata = { ++static const struct hpt_info hpt371 __devinitconst = { + .chip_name = "HPT371", + .chip_type = HPT371, + .udma_mask = HPT371_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, +@@ -507,7 +507,7 @@ static const struct hpt_info hpt371 __devinitdata = { + .timings = &hpt37x_timings + }; + +-static const struct hpt_info hpt372n __devinitdata = { ++static const struct hpt_info hpt372n __devinitconst = { + .chip_name = "HPT372N", + .chip_type = HPT372N, + .udma_mask = HPT372_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, +@@ -515,7 +515,7 @@ static const struct hpt_info hpt372n __devinitdata = { + .timings = &hpt37x_timings + }; + +-static const struct hpt_info hpt302n __devinitdata = { ++static const struct hpt_info hpt302n __devinitconst = { + .chip_name = "HPT302N", + .chip_type = HPT302N, + .udma_mask = HPT302_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, +@@ -523,7 +523,7 @@ static const struct hpt_info hpt302n __devinitdata = { + .timings = &hpt37x_timings + }; + +-static const struct hpt_info hpt371n __devinitdata = { ++static const struct hpt_info hpt371n __devinitconst = { + .chip_name = "HPT371N", + .chip_type = HPT371N, + .udma_mask = HPT371_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, +@@ -1361,7 +1361,7 @@ static const struct ide_dma_ops hpt36x_dma_ops = { + .dma_sff_read_status = ide_dma_sff_read_status, + }; + +-static const struct ide_port_info hpt366_chipsets[] __devinitdata = { ++static const struct ide_port_info hpt366_chipsets[] __devinitconst = { + { /* 0: HPT36x */ + .name = DRV_NAME, + .init_chipset = init_chipset_hpt366, +diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c +index 8126824..55a2798 100644 +--- a/drivers/ide/ide-cd.c ++++ b/drivers/ide/ide-cd.c +@@ -768,7 +768,7 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) + alignment = queue_dma_alignment(q) | q->dma_pad_mask; + if ((unsigned long)buf & alignment + || blk_rq_bytes(rq) & q->dma_pad_mask +- || object_is_on_stack(buf)) ++ || object_starts_on_stack(buf)) + drive->dma = 0; + } + } +diff --git a/drivers/ide/ide-pci-generic.c b/drivers/ide/ide-pci-generic.c +index 7f56b73..dab5b67 100644 +--- a/drivers/ide/ide-pci-generic.c ++++ b/drivers/ide/ide-pci-generic.c +@@ -53,7 +53,7 @@ static const struct ide_port_ops netcell_port_ops = { + .udma_mask = ATA_UDMA6, \ + } + +-static const struct ide_port_info generic_chipsets[] __devinitdata = { ++static const struct ide_port_info generic_chipsets[] __devinitconst = { + /* 0: Unknown */ + DECLARE_GENERIC_PCI_DEV(0), + +diff --git a/drivers/ide/it8172.c b/drivers/ide/it8172.c +index 560e66d..d5dd180 100644 +--- a/drivers/ide/it8172.c ++++ b/drivers/ide/it8172.c +@@ -115,7 +115,7 @@ static const struct ide_port_ops it8172_port_ops = { + .set_dma_mode = it8172_set_dma_mode, + }; + +-static const struct ide_port_info it8172_port_info __devinitdata = { ++static const struct ide_port_info it8172_port_info __devinitconst = { + .name = DRV_NAME, + .port_ops = &it8172_port_ops, + .enablebits = { {0x41, 0x80, 0x80}, {0x00, 0x00, 0x00} }, +diff --git a/drivers/ide/it8213.c b/drivers/ide/it8213.c +index 46816ba..1847aeb 100644 +--- a/drivers/ide/it8213.c ++++ b/drivers/ide/it8213.c +@@ -156,7 +156,7 @@ static const struct ide_port_ops it8213_port_ops = { + .cable_detect = it8213_cable_detect, + }; + +-static const struct ide_port_info it8213_chipset __devinitdata = { ++static const struct ide_port_info it8213_chipset __devinitconst = { + .name = DRV_NAME, + .enablebits = { {0x41, 0x80, 0x80} }, + .port_ops = &it8213_port_ops, +diff --git a/drivers/ide/it821x.c b/drivers/ide/it821x.c +index 2e3169f..c5611db 100644 +--- a/drivers/ide/it821x.c ++++ b/drivers/ide/it821x.c +@@ -630,7 +630,7 @@ static const struct ide_port_ops it821x_port_ops = { + .cable_detect = it821x_cable_detect, + }; + +-static const struct ide_port_info it821x_chipset __devinitdata = { ++static const struct ide_port_info it821x_chipset __devinitconst = { + .name = DRV_NAME, + .init_chipset = init_chipset_it821x, + .init_hwif = init_hwif_it821x, +diff --git a/drivers/ide/jmicron.c b/drivers/ide/jmicron.c +index 74c2c4a..efddd7d 100644 +--- a/drivers/ide/jmicron.c ++++ b/drivers/ide/jmicron.c +@@ -102,7 +102,7 @@ static const struct ide_port_ops jmicron_port_ops = { + .cable_detect = jmicron_cable_detect, + }; + +-static const struct ide_port_info jmicron_chipset __devinitdata = { ++static const struct ide_port_info jmicron_chipset __devinitconst = { + .name = DRV_NAME, + .enablebits = { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } }, + .port_ops = &jmicron_port_ops, +diff --git a/drivers/ide/ns87415.c b/drivers/ide/ns87415.c +index 95327a2..73f78d8 100644 +--- a/drivers/ide/ns87415.c ++++ b/drivers/ide/ns87415.c +@@ -293,7 +293,7 @@ static const struct ide_dma_ops ns87415_dma_ops = { + .dma_sff_read_status = superio_dma_sff_read_status, + }; + +-static const struct ide_port_info ns87415_chipset __devinitdata = { ++static const struct ide_port_info ns87415_chipset __devinitconst = { + .name = DRV_NAME, + .init_hwif = init_hwif_ns87415, + .tp_ops = &ns87415_tp_ops, +diff --git a/drivers/ide/opti621.c b/drivers/ide/opti621.c +index 1a53a4c..39edc66 100644 +--- a/drivers/ide/opti621.c ++++ b/drivers/ide/opti621.c +@@ -131,7 +131,7 @@ static const struct ide_port_ops opti621_port_ops = { + .set_pio_mode = opti621_set_pio_mode, + }; + +-static const struct ide_port_info opti621_chipset __devinitdata = { ++static const struct ide_port_info opti621_chipset __devinitconst = { + .name = DRV_NAME, + .enablebits = { {0x45, 0x80, 0x00}, {0x40, 0x08, 0x00} }, + .port_ops = &opti621_port_ops, +diff --git a/drivers/ide/pdc202xx_new.c b/drivers/ide/pdc202xx_new.c +index 9546fe2..2e5ceb6 100644 +--- a/drivers/ide/pdc202xx_new.c ++++ b/drivers/ide/pdc202xx_new.c +@@ -465,7 +465,7 @@ static const struct ide_port_ops pdcnew_port_ops = { + .udma_mask = udma, \ + } + +-static const struct ide_port_info pdcnew_chipsets[] __devinitdata = { ++static const struct ide_port_info pdcnew_chipsets[] __devinitconst = { + /* 0: PDC202{68,70} */ DECLARE_PDCNEW_DEV(ATA_UDMA5), + /* 1: PDC202{69,71,75,76,77} */ DECLARE_PDCNEW_DEV(ATA_UDMA6), + }; +diff --git a/drivers/ide/pdc202xx_old.c b/drivers/ide/pdc202xx_old.c +index 3a35ec6..5634510 100644 +--- a/drivers/ide/pdc202xx_old.c ++++ b/drivers/ide/pdc202xx_old.c +@@ -270,7 +270,7 @@ static const struct ide_dma_ops pdc2026x_dma_ops = { + .max_sectors = sectors, \ + } + +-static const struct ide_port_info pdc202xx_chipsets[] __devinitdata = { ++static const struct ide_port_info pdc202xx_chipsets[] __devinitconst = { + { /* 0: PDC20246 */ + .name = DRV_NAME, + .init_chipset = init_chipset_pdc202xx, +diff --git a/drivers/ide/piix.c b/drivers/ide/piix.c +index 1892e81..fe0fd60 100644 +--- a/drivers/ide/piix.c ++++ b/drivers/ide/piix.c +@@ -344,7 +344,7 @@ static const struct ide_port_ops ich_port_ops = { + .udma_mask = udma, \ + } + +-static const struct ide_port_info piix_pci_info[] __devinitdata = { ++static const struct ide_port_info piix_pci_info[] __devinitconst = { + /* 0: MPIIX */ + { /* + * MPIIX actually has only a single IDE channel mapped to +diff --git a/drivers/ide/rz1000.c b/drivers/ide/rz1000.c +index a6414a8..c04173e 100644 +--- a/drivers/ide/rz1000.c ++++ b/drivers/ide/rz1000.c +@@ -38,7 +38,7 @@ static int __devinit rz1000_disable_readahead(struct pci_dev *dev) + } + } + +-static const struct ide_port_info rz1000_chipset __devinitdata = { ++static const struct ide_port_info rz1000_chipset __devinitconst = { + .name = DRV_NAME, + .host_flags = IDE_HFLAG_NO_DMA, + }; +diff --git a/drivers/ide/sc1200.c b/drivers/ide/sc1200.c +index 356b9b5..d4758eb 100644 +--- a/drivers/ide/sc1200.c ++++ b/drivers/ide/sc1200.c +@@ -291,7 +291,7 @@ static const struct ide_dma_ops sc1200_dma_ops = { + .dma_sff_read_status = ide_dma_sff_read_status, + }; + +-static const struct ide_port_info sc1200_chipset __devinitdata = { ++static const struct ide_port_info sc1200_chipset __devinitconst = { + .name = DRV_NAME, + .port_ops = &sc1200_port_ops, + .dma_ops = &sc1200_dma_ops, +diff --git a/drivers/ide/scc_pata.c b/drivers/ide/scc_pata.c +index b7f5b0c..9701038 100644 +--- a/drivers/ide/scc_pata.c ++++ b/drivers/ide/scc_pata.c +@@ -811,7 +811,7 @@ static const struct ide_dma_ops scc_dma_ops = { + .dma_sff_read_status = scc_dma_sff_read_status, + }; + +-static const struct ide_port_info scc_chipset __devinitdata = { ++static const struct ide_port_info scc_chipset __devinitconst = { + .name = "sccIDE", + .init_iops = init_iops_scc, + .init_dma = scc_init_dma, +diff --git a/drivers/ide/serverworks.c b/drivers/ide/serverworks.c +index 35fb8da..24d72ef 100644 +--- a/drivers/ide/serverworks.c ++++ b/drivers/ide/serverworks.c +@@ -337,7 +337,7 @@ static const struct ide_port_ops svwks_port_ops = { + .cable_detect = svwks_cable_detect, + }; + +-static const struct ide_port_info serverworks_chipsets[] __devinitdata = { ++static const struct ide_port_info serverworks_chipsets[] __devinitconst = { + { /* 0: OSB4 */ + .name = DRV_NAME, + .init_chipset = init_chipset_svwks, +diff --git a/drivers/ide/siimage.c b/drivers/ide/siimage.c +index ddeda44..46f7e30 100644 +--- a/drivers/ide/siimage.c ++++ b/drivers/ide/siimage.c +@@ -719,7 +719,7 @@ static const struct ide_dma_ops sil_dma_ops = { + .udma_mask = ATA_UDMA6, \ + } + +-static const struct ide_port_info siimage_chipsets[] __devinitdata = { ++static const struct ide_port_info siimage_chipsets[] __devinitconst = { + /* 0: SiI680 */ DECLARE_SII_DEV(&sil_pata_port_ops), + /* 1: SiI3112 */ DECLARE_SII_DEV(&sil_sata_port_ops) + }; +diff --git a/drivers/ide/sis5513.c b/drivers/ide/sis5513.c +index 4a00225..09e61b4 100644 +--- a/drivers/ide/sis5513.c ++++ b/drivers/ide/sis5513.c +@@ -563,7 +563,7 @@ static const struct ide_port_ops sis_ata133_port_ops = { + .cable_detect = sis_cable_detect, + }; + +-static const struct ide_port_info sis5513_chipset __devinitdata = { ++static const struct ide_port_info sis5513_chipset __devinitconst = { + .name = DRV_NAME, + .init_chipset = init_chipset_sis5513, + .enablebits = { {0x4a, 0x02, 0x02}, {0x4a, 0x04, 0x04} }, +diff --git a/drivers/ide/sl82c105.c b/drivers/ide/sl82c105.c +index f21dc2a..d051cd2 100644 +--- a/drivers/ide/sl82c105.c ++++ b/drivers/ide/sl82c105.c +@@ -299,7 +299,7 @@ static const struct ide_dma_ops sl82c105_dma_ops = { + .dma_sff_read_status = ide_dma_sff_read_status, + }; + +-static const struct ide_port_info sl82c105_chipset __devinitdata = { ++static const struct ide_port_info sl82c105_chipset __devinitconst = { + .name = DRV_NAME, + .init_chipset = init_chipset_sl82c105, + .enablebits = {{0x40,0x01,0x01}, {0x40,0x10,0x10}}, +diff --git a/drivers/ide/slc90e66.c b/drivers/ide/slc90e66.c +index 864ffe0..863a5e9 100644 +--- a/drivers/ide/slc90e66.c ++++ b/drivers/ide/slc90e66.c +@@ -132,7 +132,7 @@ static const struct ide_port_ops slc90e66_port_ops = { + .cable_detect = slc90e66_cable_detect, + }; + +-static const struct ide_port_info slc90e66_chipset __devinitdata = { ++static const struct ide_port_info slc90e66_chipset __devinitconst = { + .name = DRV_NAME, + .enablebits = { {0x41, 0x80, 0x80}, {0x43, 0x80, 0x80} }, + .port_ops = &slc90e66_port_ops, +diff --git a/drivers/ide/tc86c001.c b/drivers/ide/tc86c001.c +index 4799d5c..1794678 100644 +--- a/drivers/ide/tc86c001.c ++++ b/drivers/ide/tc86c001.c +@@ -192,7 +192,7 @@ static const struct ide_dma_ops tc86c001_dma_ops = { + .dma_sff_read_status = ide_dma_sff_read_status, + }; + +-static const struct ide_port_info tc86c001_chipset __devinitdata = { ++static const struct ide_port_info tc86c001_chipset __devinitconst = { + .name = DRV_NAME, + .init_hwif = init_hwif_tc86c001, + .port_ops = &tc86c001_port_ops, +diff --git a/drivers/ide/triflex.c b/drivers/ide/triflex.c +index 281c914..55ce1b8 100644 +--- a/drivers/ide/triflex.c ++++ b/drivers/ide/triflex.c +@@ -92,7 +92,7 @@ static const struct ide_port_ops triflex_port_ops = { + .set_dma_mode = triflex_set_mode, + }; + +-static const struct ide_port_info triflex_device __devinitdata = { ++static const struct ide_port_info triflex_device __devinitconst = { + .name = DRV_NAME, + .enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}}, + .port_ops = &triflex_port_ops, +diff --git a/drivers/ide/trm290.c b/drivers/ide/trm290.c +index 4b42ca0..e494a98 100644 +--- a/drivers/ide/trm290.c ++++ b/drivers/ide/trm290.c +@@ -324,7 +324,7 @@ static struct ide_dma_ops trm290_dma_ops = { + .dma_check = trm290_dma_check, + }; + +-static const struct ide_port_info trm290_chipset __devinitdata = { ++static const struct ide_port_info trm290_chipset __devinitconst = { + .name = DRV_NAME, + .init_hwif = init_hwif_trm290, + .tp_ops = &trm290_tp_ops, +diff --git a/drivers/ide/via82cxxx.c b/drivers/ide/via82cxxx.c +index f46f49c..eb77678 100644 +--- a/drivers/ide/via82cxxx.c ++++ b/drivers/ide/via82cxxx.c +@@ -403,7 +403,7 @@ static const struct ide_port_ops via_port_ops = { + .cable_detect = via82cxxx_cable_detect, + }; + +-static const struct ide_port_info via82cxxx_chipset __devinitdata = { ++static const struct ide_port_info via82cxxx_chipset __devinitconst = { + .name = DRV_NAME, + .init_chipset = init_chipset_via82cxxx, + .enablebits = { { 0x40, 0x02, 0x02 }, { 0x40, 0x01, 0x01 } }, +diff --git a/drivers/ieee802154/fakehard.c b/drivers/ieee802154/fakehard.c +index 73d4531..c90cd2d 100644 +--- a/drivers/ieee802154/fakehard.c ++++ b/drivers/ieee802154/fakehard.c +@@ -386,7 +386,7 @@ static int __devinit ieee802154fake_probe(struct platform_device *pdev) + phy->transmit_power = 0xbf; + + dev->netdev_ops = &fake_ops; +- dev->ml_priv = &fake_mlme; ++ dev->ml_priv = (void *)&fake_mlme; + + priv = netdev_priv(dev); + priv->phy = phy; +diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c +index c889aae..6cf5aa7 100644 +--- a/drivers/infiniband/core/cm.c ++++ b/drivers/infiniband/core/cm.c +@@ -114,7 +114,7 @@ static char const counter_group_names[CM_COUNTER_GROUPS] + + struct cm_counter_group { + struct kobject obj; +- atomic_long_t counter[CM_ATTR_COUNT]; ++ atomic_long_unchecked_t counter[CM_ATTR_COUNT]; + }; + + struct cm_counter_attribute { +@@ -1394,7 +1394,7 @@ static void cm_dup_req_handler(struct cm_work *work, + struct ib_mad_send_buf *msg = NULL; + int ret; + +- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. ++ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. + counter[CM_REQ_COUNTER]); + + /* Quick state check to discard duplicate REQs. */ +@@ -1778,7 +1778,7 @@ static void cm_dup_rep_handler(struct cm_work *work) + if (!cm_id_priv) + return; + +- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. ++ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. + counter[CM_REP_COUNTER]); + ret = cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg); + if (ret) +@@ -1945,7 +1945,7 @@ static int cm_rtu_handler(struct cm_work *work) + if (cm_id_priv->id.state != IB_CM_REP_SENT && + cm_id_priv->id.state != IB_CM_MRA_REP_RCVD) { + spin_unlock_irq(&cm_id_priv->lock); +- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. ++ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. + counter[CM_RTU_COUNTER]); + goto out; + } +@@ -2128,7 +2128,7 @@ static int cm_dreq_handler(struct cm_work *work) + cm_id_priv = cm_acquire_id(dreq_msg->remote_comm_id, + dreq_msg->local_comm_id); + if (!cm_id_priv) { +- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. ++ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. + counter[CM_DREQ_COUNTER]); + cm_issue_drep(work->port, work->mad_recv_wc); + return -EINVAL; +@@ -2153,7 +2153,7 @@ static int cm_dreq_handler(struct cm_work *work) + case IB_CM_MRA_REP_RCVD: + break; + case IB_CM_TIMEWAIT: +- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. ++ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. + counter[CM_DREQ_COUNTER]); + if (cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg)) + goto unlock; +@@ -2167,7 +2167,7 @@ static int cm_dreq_handler(struct cm_work *work) + cm_free_msg(msg); + goto deref; + case IB_CM_DREQ_RCVD: +- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. ++ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. + counter[CM_DREQ_COUNTER]); + goto unlock; + default: +@@ -2534,7 +2534,7 @@ static int cm_mra_handler(struct cm_work *work) + ib_modify_mad(cm_id_priv->av.port->mad_agent, + cm_id_priv->msg, timeout)) { + if (cm_id_priv->id.lap_state == IB_CM_MRA_LAP_RCVD) +- atomic_long_inc(&work->port-> ++ atomic_long_inc_unchecked(&work->port-> + counter_group[CM_RECV_DUPLICATES]. + counter[CM_MRA_COUNTER]); + goto out; +@@ -2543,7 +2543,7 @@ static int cm_mra_handler(struct cm_work *work) + break; + case IB_CM_MRA_REQ_RCVD: + case IB_CM_MRA_REP_RCVD: +- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. ++ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. + counter[CM_MRA_COUNTER]); + /* fall through */ + default: +@@ -2705,7 +2705,7 @@ static int cm_lap_handler(struct cm_work *work) + case IB_CM_LAP_IDLE: + break; + case IB_CM_MRA_LAP_SENT: +- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. ++ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. + counter[CM_LAP_COUNTER]); + if (cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg)) + goto unlock; +@@ -2721,7 +2721,7 @@ static int cm_lap_handler(struct cm_work *work) + cm_free_msg(msg); + goto deref; + case IB_CM_LAP_RCVD: +- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. ++ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. + counter[CM_LAP_COUNTER]); + goto unlock; + default: +@@ -3005,7 +3005,7 @@ static int cm_sidr_req_handler(struct cm_work *work) + cur_cm_id_priv = cm_insert_remote_sidr(cm_id_priv); + if (cur_cm_id_priv) { + spin_unlock_irq(&cm.lock); +- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. ++ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. + counter[CM_SIDR_REQ_COUNTER]); + goto out; /* Duplicate message. */ + } +@@ -3217,10 +3217,10 @@ static void cm_send_handler(struct ib_mad_agent *mad_agent, + if (!msg->context[0] && (attr_index != CM_REJ_COUNTER)) + msg->retries = 1; + +- atomic_long_add(1 + msg->retries, ++ atomic_long_add_unchecked(1 + msg->retries, + &port->counter_group[CM_XMIT].counter[attr_index]); + if (msg->retries) +- atomic_long_add(msg->retries, ++ atomic_long_add_unchecked(msg->retries, + &port->counter_group[CM_XMIT_RETRIES]. + counter[attr_index]); + +@@ -3430,7 +3430,7 @@ static void cm_recv_handler(struct ib_mad_agent *mad_agent, + } + + attr_id = be16_to_cpu(mad_recv_wc->recv_buf.mad->mad_hdr.attr_id); +- atomic_long_inc(&port->counter_group[CM_RECV]. ++ atomic_long_inc_unchecked(&port->counter_group[CM_RECV]. + counter[attr_id - CM_ATTR_ID_OFFSET]); + + work = kmalloc(sizeof *work + sizeof(struct ib_sa_path_rec) * paths, +@@ -3635,7 +3635,7 @@ static ssize_t cm_show_counter(struct kobject *obj, struct attribute *attr, + cm_attr = container_of(attr, struct cm_counter_attribute, attr); + + return sprintf(buf, "%ld\n", +- atomic_long_read(&group->counter[cm_attr->index])); ++ atomic_long_read_unchecked(&group->counter[cm_attr->index])); + } + + static const struct sysfs_ops cm_counter_ops = { +diff --git a/drivers/infiniband/core/fmr_pool.c b/drivers/infiniband/core/fmr_pool.c +index 176c8f9..2627b62 100644 +--- a/drivers/infiniband/core/fmr_pool.c ++++ b/drivers/infiniband/core/fmr_pool.c +@@ -98,8 +98,8 @@ struct ib_fmr_pool { + + struct task_struct *thread; + +- atomic_t req_ser; +- atomic_t flush_ser; ++ atomic_unchecked_t req_ser; ++ atomic_unchecked_t flush_ser; + + wait_queue_head_t force_wait; + }; +@@ -180,10 +180,10 @@ static int ib_fmr_cleanup_thread(void *pool_ptr) + struct ib_fmr_pool *pool = pool_ptr; + + do { +- if (atomic_read(&pool->flush_ser) - atomic_read(&pool->req_ser) < 0) { ++ if (atomic_read_unchecked(&pool->flush_ser) - atomic_read_unchecked(&pool->req_ser) < 0) { + ib_fmr_batch_release(pool); + +- atomic_inc(&pool->flush_ser); ++ atomic_inc_unchecked(&pool->flush_ser); + wake_up_interruptible(&pool->force_wait); + + if (pool->flush_function) +@@ -191,7 +191,7 @@ static int ib_fmr_cleanup_thread(void *pool_ptr) + } + + set_current_state(TASK_INTERRUPTIBLE); +- if (atomic_read(&pool->flush_ser) - atomic_read(&pool->req_ser) >= 0 && ++ if (atomic_read_unchecked(&pool->flush_ser) - atomic_read_unchecked(&pool->req_ser) >= 0 && + !kthread_should_stop()) + schedule(); + __set_current_state(TASK_RUNNING); +@@ -283,8 +283,8 @@ struct ib_fmr_pool *ib_create_fmr_pool(struct ib_pd *pd, + pool->dirty_watermark = params->dirty_watermark; + pool->dirty_len = 0; + spin_lock_init(&pool->pool_lock); +- atomic_set(&pool->req_ser, 0); +- atomic_set(&pool->flush_ser, 0); ++ atomic_set_unchecked(&pool->req_ser, 0); ++ atomic_set_unchecked(&pool->flush_ser, 0); + init_waitqueue_head(&pool->force_wait); + + pool->thread = kthread_run(ib_fmr_cleanup_thread, +@@ -412,11 +412,11 @@ int ib_flush_fmr_pool(struct ib_fmr_pool *pool) + } + spin_unlock_irq(&pool->pool_lock); + +- serial = atomic_inc_return(&pool->req_ser); ++ serial = atomic_inc_return_unchecked(&pool->req_ser); + wake_up_process(pool->thread); + + if (wait_event_interruptible(pool->force_wait, +- atomic_read(&pool->flush_ser) - serial >= 0)) ++ atomic_read_unchecked(&pool->flush_ser) - serial >= 0)) + return -EINTR; + + return 0; +@@ -526,7 +526,7 @@ int ib_fmr_pool_unmap(struct ib_pool_fmr *fmr) + } else { + list_add_tail(&fmr->list, &pool->dirty_list); + if (++pool->dirty_len >= pool->dirty_watermark) { +- atomic_inc(&pool->req_ser); ++ atomic_inc_unchecked(&pool->req_ser); + wake_up_process(pool->thread); + } + } +diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c +index 40c8353..946b0e4 100644 +--- a/drivers/infiniband/hw/cxgb4/mem.c ++++ b/drivers/infiniband/hw/cxgb4/mem.c +@@ -122,7 +122,7 @@ static int write_tpt_entry(struct c4iw_rdev *rdev, u32 reset_tpt_entry, + int err; + struct fw_ri_tpte tpt; + u32 stag_idx; +- static atomic_t key; ++ static atomic_unchecked_t key; + + if (c4iw_fatal_error(rdev)) + return -EIO; +@@ -135,7 +135,7 @@ static int write_tpt_entry(struct c4iw_rdev *rdev, u32 reset_tpt_entry, + &rdev->resource.tpt_fifo_lock); + if (!stag_idx) + return -ENOMEM; +- *stag = (stag_idx << 8) | (atomic_inc_return(&key) & 0xff); ++ *stag = (stag_idx << 8) | (atomic_inc_return_unchecked(&key) & 0xff); + } + PDBG("%s stag_state 0x%0x type 0x%0x pdid 0x%0x, stag_idx 0x%x\n", + __func__, stag_state, type, pdid, stag_idx); +diff --git a/drivers/infiniband/hw/ipath/ipath_rc.c b/drivers/infiniband/hw/ipath/ipath_rc.c +index 79b3dbc..96e5fcc 100644 +--- a/drivers/infiniband/hw/ipath/ipath_rc.c ++++ b/drivers/infiniband/hw/ipath/ipath_rc.c +@@ -1868,7 +1868,7 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, + struct ib_atomic_eth *ateth; + struct ipath_ack_entry *e; + u64 vaddr; +- atomic64_t *maddr; ++ atomic64_unchecked_t *maddr; + u64 sdata; + u32 rkey; + u8 next; +@@ -1903,11 +1903,11 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, + IB_ACCESS_REMOTE_ATOMIC))) + goto nack_acc_unlck; + /* Perform atomic OP and save result. */ +- maddr = (atomic64_t *) qp->r_sge.sge.vaddr; ++ maddr = (atomic64_unchecked_t *) qp->r_sge.sge.vaddr; + sdata = be64_to_cpu(ateth->swap_data); + e = &qp->s_ack_queue[qp->r_head_ack_queue]; + e->atomic_data = (opcode == OP(FETCH_ADD)) ? +- (u64) atomic64_add_return(sdata, maddr) - sdata : ++ (u64) atomic64_add_return_unchecked(sdata, maddr) - sdata : + (u64) cmpxchg((u64 *) qp->r_sge.sge.vaddr, + be64_to_cpu(ateth->compare_data), + sdata); +diff --git a/drivers/infiniband/hw/ipath/ipath_ruc.c b/drivers/infiniband/hw/ipath/ipath_ruc.c +index 1f95bba..9530f87 100644 +--- a/drivers/infiniband/hw/ipath/ipath_ruc.c ++++ b/drivers/infiniband/hw/ipath/ipath_ruc.c +@@ -266,7 +266,7 @@ static void ipath_ruc_loopback(struct ipath_qp *sqp) + unsigned long flags; + struct ib_wc wc; + u64 sdata; +- atomic64_t *maddr; ++ atomic64_unchecked_t *maddr; + enum ib_wc_status send_status; + + /* +@@ -382,11 +382,11 @@ again: + IB_ACCESS_REMOTE_ATOMIC))) + goto acc_err; + /* Perform atomic OP and save result. */ +- maddr = (atomic64_t *) qp->r_sge.sge.vaddr; ++ maddr = (atomic64_unchecked_t *) qp->r_sge.sge.vaddr; + sdata = wqe->wr.wr.atomic.compare_add; + *(u64 *) sqp->s_sge.sge.vaddr = + (wqe->wr.opcode == IB_WR_ATOMIC_FETCH_AND_ADD) ? +- (u64) atomic64_add_return(sdata, maddr) - sdata : ++ (u64) atomic64_add_return_unchecked(sdata, maddr) - sdata : + (u64) cmpxchg((u64 *) qp->r_sge.sge.vaddr, + sdata, wqe->wr.wr.atomic.swap); + goto send_comp; +diff --git a/drivers/infiniband/hw/nes/nes.c b/drivers/infiniband/hw/nes/nes.c +index 7140199..da60063 100644 +--- a/drivers/infiniband/hw/nes/nes.c ++++ b/drivers/infiniband/hw/nes/nes.c +@@ -103,7 +103,7 @@ MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes"); + LIST_HEAD(nes_adapter_list); + static LIST_HEAD(nes_dev_list); + +-atomic_t qps_destroyed; ++atomic_unchecked_t qps_destroyed; + + static unsigned int ee_flsh_adapter; + static unsigned int sysfs_nonidx_addr; +@@ -272,7 +272,7 @@ static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_r + struct nes_qp *nesqp = cqp_request->cqp_callback_pointer; + struct nes_adapter *nesadapter = nesdev->nesadapter; + +- atomic_inc(&qps_destroyed); ++ atomic_inc_unchecked(&qps_destroyed); + + /* Free the control structures */ + +diff --git a/drivers/infiniband/hw/nes/nes.h b/drivers/infiniband/hw/nes/nes.h +index c438e46..ca30356 100644 +--- a/drivers/infiniband/hw/nes/nes.h ++++ b/drivers/infiniband/hw/nes/nes.h +@@ -178,17 +178,17 @@ extern unsigned int nes_debug_level; + extern unsigned int wqm_quanta; + extern struct list_head nes_adapter_list; + +-extern atomic_t cm_connects; +-extern atomic_t cm_accepts; +-extern atomic_t cm_disconnects; +-extern atomic_t cm_closes; +-extern atomic_t cm_connecteds; +-extern atomic_t cm_connect_reqs; +-extern atomic_t cm_rejects; +-extern atomic_t mod_qp_timouts; +-extern atomic_t qps_created; +-extern atomic_t qps_destroyed; +-extern atomic_t sw_qps_destroyed; ++extern atomic_unchecked_t cm_connects; ++extern atomic_unchecked_t cm_accepts; ++extern atomic_unchecked_t cm_disconnects; ++extern atomic_unchecked_t cm_closes; ++extern atomic_unchecked_t cm_connecteds; ++extern atomic_unchecked_t cm_connect_reqs; ++extern atomic_unchecked_t cm_rejects; ++extern atomic_unchecked_t mod_qp_timouts; ++extern atomic_unchecked_t qps_created; ++extern atomic_unchecked_t qps_destroyed; ++extern atomic_unchecked_t sw_qps_destroyed; + extern u32 mh_detected; + extern u32 mh_pauses_sent; + extern u32 cm_packets_sent; +@@ -197,16 +197,16 @@ extern u32 cm_packets_created; + extern u32 cm_packets_received; + extern u32 cm_packets_dropped; + extern u32 cm_packets_retrans; +-extern atomic_t cm_listens_created; +-extern atomic_t cm_listens_destroyed; ++extern atomic_unchecked_t cm_listens_created; ++extern atomic_unchecked_t cm_listens_destroyed; + extern u32 cm_backlog_drops; +-extern atomic_t cm_loopbacks; +-extern atomic_t cm_nodes_created; +-extern atomic_t cm_nodes_destroyed; +-extern atomic_t cm_accel_dropped_pkts; +-extern atomic_t cm_resets_recvd; +-extern atomic_t pau_qps_created; +-extern atomic_t pau_qps_destroyed; ++extern atomic_unchecked_t cm_loopbacks; ++extern atomic_unchecked_t cm_nodes_created; ++extern atomic_unchecked_t cm_nodes_destroyed; ++extern atomic_unchecked_t cm_accel_dropped_pkts; ++extern atomic_unchecked_t cm_resets_recvd; ++extern atomic_unchecked_t pau_qps_created; ++extern atomic_unchecked_t pau_qps_destroyed; + + extern u32 int_mod_timer_init; + extern u32 int_mod_cq_depth_256; +diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c +index 71edfbb..15b62ae 100644 +--- a/drivers/infiniband/hw/nes/nes_cm.c ++++ b/drivers/infiniband/hw/nes/nes_cm.c +@@ -68,14 +68,14 @@ u32 cm_packets_dropped; + u32 cm_packets_retrans; + u32 cm_packets_created; + u32 cm_packets_received; +-atomic_t cm_listens_created; +-atomic_t cm_listens_destroyed; ++atomic_unchecked_t cm_listens_created; ++atomic_unchecked_t cm_listens_destroyed; + u32 cm_backlog_drops; +-atomic_t cm_loopbacks; +-atomic_t cm_nodes_created; +-atomic_t cm_nodes_destroyed; +-atomic_t cm_accel_dropped_pkts; +-atomic_t cm_resets_recvd; ++atomic_unchecked_t cm_loopbacks; ++atomic_unchecked_t cm_nodes_created; ++atomic_unchecked_t cm_nodes_destroyed; ++atomic_unchecked_t cm_accel_dropped_pkts; ++atomic_unchecked_t cm_resets_recvd; + + static inline int mini_cm_accelerated(struct nes_cm_core *, struct nes_cm_node *); + static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *, struct nes_vnic *, struct nes_cm_info *); +@@ -148,13 +148,13 @@ static struct nes_cm_ops nes_cm_api = { + + static struct nes_cm_core *g_cm_core; + +-atomic_t cm_connects; +-atomic_t cm_accepts; +-atomic_t cm_disconnects; +-atomic_t cm_closes; +-atomic_t cm_connecteds; +-atomic_t cm_connect_reqs; +-atomic_t cm_rejects; ++atomic_unchecked_t cm_connects; ++atomic_unchecked_t cm_accepts; ++atomic_unchecked_t cm_disconnects; ++atomic_unchecked_t cm_closes; ++atomic_unchecked_t cm_connecteds; ++atomic_unchecked_t cm_connect_reqs; ++atomic_unchecked_t cm_rejects; + + int nes_add_ref_cm_node(struct nes_cm_node *cm_node) + { +@@ -1279,7 +1279,7 @@ static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core, + kfree(listener); + listener = NULL; + ret = 0; +- atomic_inc(&cm_listens_destroyed); ++ atomic_inc_unchecked(&cm_listens_destroyed); + } else { + spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); + } +@@ -1482,7 +1482,7 @@ static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core, + cm_node->rem_mac); + + add_hte_node(cm_core, cm_node); +- atomic_inc(&cm_nodes_created); ++ atomic_inc_unchecked(&cm_nodes_created); + + return cm_node; + } +@@ -1540,7 +1540,7 @@ static int rem_ref_cm_node(struct nes_cm_core *cm_core, + } + + atomic_dec(&cm_core->node_cnt); +- atomic_inc(&cm_nodes_destroyed); ++ atomic_inc_unchecked(&cm_nodes_destroyed); + nesqp = cm_node->nesqp; + if (nesqp) { + nesqp->cm_node = NULL; +@@ -1604,7 +1604,7 @@ static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc, + + static void drop_packet(struct sk_buff *skb) + { +- atomic_inc(&cm_accel_dropped_pkts); ++ atomic_inc_unchecked(&cm_accel_dropped_pkts); + dev_kfree_skb_any(skb); + } + +@@ -1667,7 +1667,7 @@ static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, + { + + int reset = 0; /* whether to send reset in case of err.. */ +- atomic_inc(&cm_resets_recvd); ++ atomic_inc_unchecked(&cm_resets_recvd); + nes_debug(NES_DBG_CM, "Received Reset, cm_node = %p, state = %u." + " refcnt=%d\n", cm_node, cm_node->state, + atomic_read(&cm_node->ref_count)); +@@ -2308,7 +2308,7 @@ static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core, + rem_ref_cm_node(cm_node->cm_core, cm_node); + return NULL; + } +- atomic_inc(&cm_loopbacks); ++ atomic_inc_unchecked(&cm_loopbacks); + loopbackremotenode->loopbackpartner = cm_node; + loopbackremotenode->tcp_cntxt.rcv_wscale = + NES_CM_DEFAULT_RCV_WND_SCALE; +@@ -2583,7 +2583,7 @@ static int mini_cm_recv_pkt(struct nes_cm_core *cm_core, + nes_queue_mgt_skbs(skb, nesvnic, cm_node->nesqp); + else { + rem_ref_cm_node(cm_core, cm_node); +- atomic_inc(&cm_accel_dropped_pkts); ++ atomic_inc_unchecked(&cm_accel_dropped_pkts); + dev_kfree_skb_any(skb); + } + break; +@@ -2890,7 +2890,7 @@ static int nes_cm_disconn_true(struct nes_qp *nesqp) + + if ((cm_id) && (cm_id->event_handler)) { + if (issue_disconn) { +- atomic_inc(&cm_disconnects); ++ atomic_inc_unchecked(&cm_disconnects); + cm_event.event = IW_CM_EVENT_DISCONNECT; + cm_event.status = disconn_status; + cm_event.local_addr = cm_id->local_addr; +@@ -2912,7 +2912,7 @@ static int nes_cm_disconn_true(struct nes_qp *nesqp) + } + + if (issue_close) { +- atomic_inc(&cm_closes); ++ atomic_inc_unchecked(&cm_closes); + nes_disconnect(nesqp, 1); + + cm_id->provider_data = nesqp; +@@ -3048,7 +3048,7 @@ int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) + + nes_debug(NES_DBG_CM, "QP%u, cm_node=%p, jiffies = %lu listener = %p\n", + nesqp->hwqp.qp_id, cm_node, jiffies, cm_node->listener); +- atomic_inc(&cm_accepts); ++ atomic_inc_unchecked(&cm_accepts); + + nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", + netdev_refcnt_read(nesvnic->netdev)); +@@ -3250,7 +3250,7 @@ int nes_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) + struct nes_cm_core *cm_core; + u8 *start_buff; + +- atomic_inc(&cm_rejects); ++ atomic_inc_unchecked(&cm_rejects); + cm_node = (struct nes_cm_node *)cm_id->provider_data; + loopback = cm_node->loopbackpartner; + cm_core = cm_node->cm_core; +@@ -3310,7 +3310,7 @@ int nes_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) + ntohl(cm_id->local_addr.sin_addr.s_addr), + ntohs(cm_id->local_addr.sin_port)); + +- atomic_inc(&cm_connects); ++ atomic_inc_unchecked(&cm_connects); + nesqp->active_conn = 1; + + /* cache the cm_id in the qp */ +@@ -3416,7 +3416,7 @@ int nes_create_listen(struct iw_cm_id *cm_id, int backlog) + g_cm_core->api->stop_listener(g_cm_core, (void *)cm_node); + return err; + } +- atomic_inc(&cm_listens_created); ++ atomic_inc_unchecked(&cm_listens_created); + } + + cm_id->add_ref(cm_id); +@@ -3517,7 +3517,7 @@ static void cm_event_connected(struct nes_cm_event *event) + + if (nesqp->destroyed) + return; +- atomic_inc(&cm_connecteds); ++ atomic_inc_unchecked(&cm_connecteds); + nes_debug(NES_DBG_CM, "QP%u attempting to connect to 0x%08X:0x%04X on" + " local port 0x%04X. jiffies = %lu.\n", + nesqp->hwqp.qp_id, +@@ -3704,7 +3704,7 @@ static void cm_event_reset(struct nes_cm_event *event) + + cm_id->add_ref(cm_id); + ret = cm_id->event_handler(cm_id, &cm_event); +- atomic_inc(&cm_closes); ++ atomic_inc_unchecked(&cm_closes); + cm_event.event = IW_CM_EVENT_CLOSE; + cm_event.status = 0; + cm_event.provider_data = cm_id->provider_data; +@@ -3740,7 +3740,7 @@ static void cm_event_mpa_req(struct nes_cm_event *event) + return; + cm_id = cm_node->cm_id; + +- atomic_inc(&cm_connect_reqs); ++ atomic_inc_unchecked(&cm_connect_reqs); + nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", + cm_node, cm_id, jiffies); + +@@ -3780,7 +3780,7 @@ static void cm_event_mpa_reject(struct nes_cm_event *event) + return; + cm_id = cm_node->cm_id; + +- atomic_inc(&cm_connect_reqs); ++ atomic_inc_unchecked(&cm_connect_reqs); + nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", + cm_node, cm_id, jiffies); + +diff --git a/drivers/infiniband/hw/nes/nes_mgt.c b/drivers/infiniband/hw/nes/nes_mgt.c +index 3ba7be3..c81f6ff 100644 +--- a/drivers/infiniband/hw/nes/nes_mgt.c ++++ b/drivers/infiniband/hw/nes/nes_mgt.c +@@ -40,8 +40,8 @@ + #include "nes.h" + #include "nes_mgt.h" + +-atomic_t pau_qps_created; +-atomic_t pau_qps_destroyed; ++atomic_unchecked_t pau_qps_created; ++atomic_unchecked_t pau_qps_destroyed; + + static void nes_replenish_mgt_rq(struct nes_vnic_mgt *mgtvnic) + { +@@ -621,7 +621,7 @@ void nes_destroy_pau_qp(struct nes_device *nesdev, struct nes_qp *nesqp) + { + struct sk_buff *skb; + unsigned long flags; +- atomic_inc(&pau_qps_destroyed); ++ atomic_inc_unchecked(&pau_qps_destroyed); + + /* Free packets that have not yet been forwarded */ + /* Lock is acquired by skb_dequeue when removing the skb */ +@@ -812,7 +812,7 @@ static void nes_mgt_ce_handler(struct nes_device *nesdev, struct nes_hw_nic_cq * + cq->cq_vbase[head].cqe_words[NES_NIC_CQE_HASH_RCVNXT]); + skb_queue_head_init(&nesqp->pau_list); + spin_lock_init(&nesqp->pau_lock); +- atomic_inc(&pau_qps_created); ++ atomic_inc_unchecked(&pau_qps_created); + nes_change_quad_hash(nesdev, mgtvnic->nesvnic, nesqp); + } + +diff --git a/drivers/infiniband/hw/nes/nes_nic.c b/drivers/infiniband/hw/nes/nes_nic.c +index f3a3ecf..57d311d 100644 +--- a/drivers/infiniband/hw/nes/nes_nic.c ++++ b/drivers/infiniband/hw/nes/nes_nic.c +@@ -1277,39 +1277,39 @@ static void nes_netdev_get_ethtool_stats(struct net_device *netdev, + target_stat_values[++index] = mh_detected; + target_stat_values[++index] = mh_pauses_sent; + target_stat_values[++index] = nesvnic->endnode_ipv4_tcp_retransmits; +- target_stat_values[++index] = atomic_read(&cm_connects); +- target_stat_values[++index] = atomic_read(&cm_accepts); +- target_stat_values[++index] = atomic_read(&cm_disconnects); +- target_stat_values[++index] = atomic_read(&cm_connecteds); +- target_stat_values[++index] = atomic_read(&cm_connect_reqs); +- target_stat_values[++index] = atomic_read(&cm_rejects); +- target_stat_values[++index] = atomic_read(&mod_qp_timouts); +- target_stat_values[++index] = atomic_read(&qps_created); +- target_stat_values[++index] = atomic_read(&sw_qps_destroyed); +- target_stat_values[++index] = atomic_read(&qps_destroyed); +- target_stat_values[++index] = atomic_read(&cm_closes); ++ target_stat_values[++index] = atomic_read_unchecked(&cm_connects); ++ target_stat_values[++index] = atomic_read_unchecked(&cm_accepts); ++ target_stat_values[++index] = atomic_read_unchecked(&cm_disconnects); ++ target_stat_values[++index] = atomic_read_unchecked(&cm_connecteds); ++ target_stat_values[++index] = atomic_read_unchecked(&cm_connect_reqs); ++ target_stat_values[++index] = atomic_read_unchecked(&cm_rejects); ++ target_stat_values[++index] = atomic_read_unchecked(&mod_qp_timouts); ++ target_stat_values[++index] = atomic_read_unchecked(&qps_created); ++ target_stat_values[++index] = atomic_read_unchecked(&sw_qps_destroyed); ++ target_stat_values[++index] = atomic_read_unchecked(&qps_destroyed); ++ target_stat_values[++index] = atomic_read_unchecked(&cm_closes); + target_stat_values[++index] = cm_packets_sent; + target_stat_values[++index] = cm_packets_bounced; + target_stat_values[++index] = cm_packets_created; + target_stat_values[++index] = cm_packets_received; + target_stat_values[++index] = cm_packets_dropped; + target_stat_values[++index] = cm_packets_retrans; +- target_stat_values[++index] = atomic_read(&cm_listens_created); +- target_stat_values[++index] = atomic_read(&cm_listens_destroyed); ++ target_stat_values[++index] = atomic_read_unchecked(&cm_listens_created); ++ target_stat_values[++index] = atomic_read_unchecked(&cm_listens_destroyed); + target_stat_values[++index] = cm_backlog_drops; +- target_stat_values[++index] = atomic_read(&cm_loopbacks); +- target_stat_values[++index] = atomic_read(&cm_nodes_created); +- target_stat_values[++index] = atomic_read(&cm_nodes_destroyed); +- target_stat_values[++index] = atomic_read(&cm_accel_dropped_pkts); +- target_stat_values[++index] = atomic_read(&cm_resets_recvd); ++ target_stat_values[++index] = atomic_read_unchecked(&cm_loopbacks); ++ target_stat_values[++index] = atomic_read_unchecked(&cm_nodes_created); ++ target_stat_values[++index] = atomic_read_unchecked(&cm_nodes_destroyed); ++ target_stat_values[++index] = atomic_read_unchecked(&cm_accel_dropped_pkts); ++ target_stat_values[++index] = atomic_read_unchecked(&cm_resets_recvd); + target_stat_values[++index] = nesadapter->free_4kpbl; + target_stat_values[++index] = nesadapter->free_256pbl; + target_stat_values[++index] = int_mod_timer_init; + target_stat_values[++index] = nesvnic->lro_mgr.stats.aggregated; + target_stat_values[++index] = nesvnic->lro_mgr.stats.flushed; + target_stat_values[++index] = nesvnic->lro_mgr.stats.no_desc; +- target_stat_values[++index] = atomic_read(&pau_qps_created); +- target_stat_values[++index] = atomic_read(&pau_qps_destroyed); ++ target_stat_values[++index] = atomic_read_unchecked(&pau_qps_created); ++ target_stat_values[++index] = atomic_read_unchecked(&pau_qps_destroyed); + } + + /** +diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c +index 8b8812d..a5e1133 100644 +--- a/drivers/infiniband/hw/nes/nes_verbs.c ++++ b/drivers/infiniband/hw/nes/nes_verbs.c +@@ -46,9 +46,9 @@ + + #include <rdma/ib_umem.h> + +-atomic_t mod_qp_timouts; +-atomic_t qps_created; +-atomic_t sw_qps_destroyed; ++atomic_unchecked_t mod_qp_timouts; ++atomic_unchecked_t qps_created; ++atomic_unchecked_t sw_qps_destroyed; + + static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev); + +@@ -1131,7 +1131,7 @@ static struct ib_qp *nes_create_qp(struct ib_pd *ibpd, + if (init_attr->create_flags) + return ERR_PTR(-EINVAL); + +- atomic_inc(&qps_created); ++ atomic_inc_unchecked(&qps_created); + switch (init_attr->qp_type) { + case IB_QPT_RC: + if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) { +@@ -1460,7 +1460,7 @@ static int nes_destroy_qp(struct ib_qp *ibqp) + struct iw_cm_event cm_event; + int ret = 0; + +- atomic_inc(&sw_qps_destroyed); ++ atomic_inc_unchecked(&sw_qps_destroyed); + nesqp->destroyed = 1; + + /* Blow away the connection if it exists. */ +diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h +index 6b811e3..f8acf88 100644 +--- a/drivers/infiniband/hw/qib/qib.h ++++ b/drivers/infiniband/hw/qib/qib.h +@@ -51,6 +51,7 @@ + #include <linux/completion.h> + #include <linux/kref.h> + #include <linux/sched.h> ++#include <linux/slab.h> + + #include "qib_common.h" + #include "qib_verbs.h" +diff --git a/drivers/input/gameport/gameport.c b/drivers/input/gameport/gameport.c +index da739d9..da1c7f4 100644 +--- a/drivers/input/gameport/gameport.c ++++ b/drivers/input/gameport/gameport.c +@@ -487,14 +487,14 @@ EXPORT_SYMBOL(gameport_set_phys); + */ + static void gameport_init_port(struct gameport *gameport) + { +- static atomic_t gameport_no = ATOMIC_INIT(0); ++ static atomic_unchecked_t gameport_no = ATOMIC_INIT(0); + + __module_get(THIS_MODULE); + + mutex_init(&gameport->drv_mutex); + device_initialize(&gameport->dev); + dev_set_name(&gameport->dev, "gameport%lu", +- (unsigned long)atomic_inc_return(&gameport_no) - 1); ++ (unsigned long)atomic_inc_return_unchecked(&gameport_no) - 1); + gameport->dev.bus = &gameport_bus; + gameport->dev.release = gameport_release_port; + if (gameport->parent) +diff --git a/drivers/input/input.c b/drivers/input/input.c +index 8921c61..f5cd63d 100644 +--- a/drivers/input/input.c ++++ b/drivers/input/input.c +@@ -1814,7 +1814,7 @@ static void input_cleanse_bitmasks(struct input_dev *dev) + */ + int input_register_device(struct input_dev *dev) + { +- static atomic_t input_no = ATOMIC_INIT(0); ++ static atomic_unchecked_t input_no = ATOMIC_INIT(0); + struct input_handler *handler; + const char *path; + int error; +@@ -1851,7 +1851,7 @@ int input_register_device(struct input_dev *dev) + dev->setkeycode = input_default_setkeycode; + + dev_set_name(&dev->dev, "input%ld", +- (unsigned long) atomic_inc_return(&input_no) - 1); ++ (unsigned long) atomic_inc_return_unchecked(&input_no) - 1); + + error = device_add(&dev->dev); + if (error) +diff --git a/drivers/input/joystick/sidewinder.c b/drivers/input/joystick/sidewinder.c +index b8d8611..7a4a04b 100644 +--- a/drivers/input/joystick/sidewinder.c ++++ b/drivers/input/joystick/sidewinder.c +@@ -30,6 +30,7 @@ + #include <linux/kernel.h> + #include <linux/module.h> + #include <linux/slab.h> ++#include <linux/sched.h> + #include <linux/init.h> + #include <linux/input.h> + #include <linux/gameport.h> +diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c +index fd7a0d5..a4af10c 100644 +--- a/drivers/input/joystick/xpad.c ++++ b/drivers/input/joystick/xpad.c +@@ -710,7 +710,7 @@ static void xpad_led_set(struct led_classdev *led_cdev, + + static int xpad_led_probe(struct usb_xpad *xpad) + { +- static atomic_t led_seq = ATOMIC_INIT(0); ++ static atomic_unchecked_t led_seq = ATOMIC_INIT(0); + long led_no; + struct xpad_led *led; + struct led_classdev *led_cdev; +@@ -723,7 +723,7 @@ static int xpad_led_probe(struct usb_xpad *xpad) + if (!led) + return -ENOMEM; + +- led_no = (long)atomic_inc_return(&led_seq) - 1; ++ led_no = (long)atomic_inc_return_unchecked(&led_seq) - 1; + + snprintf(led->name, sizeof(led->name), "xpad%ld", led_no); + led->xpad = xpad; +diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c +index 0110b5a..d3ad144 100644 +--- a/drivers/input/mousedev.c ++++ b/drivers/input/mousedev.c +@@ -763,7 +763,7 @@ static ssize_t mousedev_read(struct file *file, char __user *buffer, + + spin_unlock_irq(&client->packet_lock); + +- if (copy_to_user(buffer, data, count)) ++ if (count > sizeof(data) || copy_to_user(buffer, data, count)) + return -EFAULT; + + return count; +diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c +index d0f7533..fb8215b 100644 +--- a/drivers/input/serio/serio.c ++++ b/drivers/input/serio/serio.c +@@ -496,7 +496,7 @@ static void serio_release_port(struct device *dev) + */ + static void serio_init_port(struct serio *serio) + { +- static atomic_t serio_no = ATOMIC_INIT(0); ++ static atomic_unchecked_t serio_no = ATOMIC_INIT(0); + + __module_get(THIS_MODULE); + +@@ -507,7 +507,7 @@ static void serio_init_port(struct serio *serio) + mutex_init(&serio->drv_mutex); + device_initialize(&serio->dev); + dev_set_name(&serio->dev, "serio%ld", +- (long)atomic_inc_return(&serio_no) - 1); ++ (long)atomic_inc_return_unchecked(&serio_no) - 1); + serio->dev.bus = &serio_bus; + serio->dev.release = serio_release_port; + serio->dev.groups = serio_device_attr_groups; +diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c +index b902794..fc7b85b 100644 +--- a/drivers/isdn/capi/capi.c ++++ b/drivers/isdn/capi/capi.c +@@ -83,8 +83,8 @@ struct capiminor { + + struct capi20_appl *ap; + u32 ncci; +- atomic_t datahandle; +- atomic_t msgid; ++ atomic_unchecked_t datahandle; ++ atomic_unchecked_t msgid; + + struct tty_port port; + int ttyinstop; +@@ -397,7 +397,7 @@ gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb) + capimsg_setu16(s, 2, mp->ap->applid); + capimsg_setu8 (s, 4, CAPI_DATA_B3); + capimsg_setu8 (s, 5, CAPI_RESP); +- capimsg_setu16(s, 6, atomic_inc_return(&mp->msgid)); ++ capimsg_setu16(s, 6, atomic_inc_return_unchecked(&mp->msgid)); + capimsg_setu32(s, 8, mp->ncci); + capimsg_setu16(s, 12, datahandle); + } +@@ -518,14 +518,14 @@ static void handle_minor_send(struct capiminor *mp) + mp->outbytes -= len; + spin_unlock_bh(&mp->outlock); + +- datahandle = atomic_inc_return(&mp->datahandle); ++ datahandle = atomic_inc_return_unchecked(&mp->datahandle); + skb_push(skb, CAPI_DATA_B3_REQ_LEN); + memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN); + capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN); + capimsg_setu16(skb->data, 2, mp->ap->applid); + capimsg_setu8 (skb->data, 4, CAPI_DATA_B3); + capimsg_setu8 (skb->data, 5, CAPI_REQ); +- capimsg_setu16(skb->data, 6, atomic_inc_return(&mp->msgid)); ++ capimsg_setu16(skb->data, 6, atomic_inc_return_unchecked(&mp->msgid)); + capimsg_setu32(skb->data, 8, mp->ncci); /* NCCI */ + capimsg_setu32(skb->data, 12, (u32)(long)skb->data);/* Data32 */ + capimsg_setu16(skb->data, 16, len); /* Data length */ +diff --git a/drivers/isdn/hardware/avm/b1.c b/drivers/isdn/hardware/avm/b1.c +index 821f7ac..28d4030 100644 +--- a/drivers/isdn/hardware/avm/b1.c ++++ b/drivers/isdn/hardware/avm/b1.c +@@ -176,7 +176,7 @@ int b1_load_t4file(avmcard *card, capiloaddatapart *t4file) + } + if (left) { + if (t4file->user) { +- if (copy_from_user(buf, dp, left)) ++ if (left > sizeof buf || copy_from_user(buf, dp, left)) + return -EFAULT; + } else { + memcpy(buf, dp, left); +@@ -224,7 +224,7 @@ int b1_load_config(avmcard *card, capiloaddatapart *config) + } + if (left) { + if (config->user) { +- if (copy_from_user(buf, dp, left)) ++ if (left > sizeof buf || copy_from_user(buf, dp, left)) + return -EFAULT; + } else { + memcpy(buf, dp, left); +diff --git a/drivers/isdn/hardware/eicon/divasync.h b/drivers/isdn/hardware/eicon/divasync.h +index dd6b53a..19d9ee6 100644 +--- a/drivers/isdn/hardware/eicon/divasync.h ++++ b/drivers/isdn/hardware/eicon/divasync.h +@@ -146,7 +146,7 @@ typedef struct _diva_didd_add_adapter { + } diva_didd_add_adapter_t; + typedef struct _diva_didd_remove_adapter { + IDI_CALL p_request; +-} diva_didd_remove_adapter_t; ++} __no_const diva_didd_remove_adapter_t; + typedef struct _diva_didd_read_adapter_array { + void *buffer; + dword length; +diff --git a/drivers/isdn/hardware/eicon/xdi_adapter.h b/drivers/isdn/hardware/eicon/xdi_adapter.h +index d303e65..28bcb7b 100644 +--- a/drivers/isdn/hardware/eicon/xdi_adapter.h ++++ b/drivers/isdn/hardware/eicon/xdi_adapter.h +@@ -44,7 +44,7 @@ typedef struct _xdi_mbox_t { + typedef struct _diva_os_idi_adapter_interface { + diva_init_card_proc_t cleanup_adapter_proc; + diva_cmd_card_proc_t cmd_proc; +-} diva_os_idi_adapter_interface_t; ++} __no_const diva_os_idi_adapter_interface_t; + + typedef struct _diva_os_xdi_adapter { + struct list_head link; +diff --git a/drivers/isdn/icn/icn.c b/drivers/isdn/icn/icn.c +index e74df7c..03a03ba 100644 +--- a/drivers/isdn/icn/icn.c ++++ b/drivers/isdn/icn/icn.c +@@ -1045,7 +1045,7 @@ icn_writecmd(const u_char *buf, int len, int user, icn_card *card) + if (count > len) + count = len; + if (user) { +- if (copy_from_user(msg, buf, count)) ++ if (count > sizeof msg || copy_from_user(msg, buf, count)) + return -EFAULT; + } else + memcpy(msg, buf, count); +diff --git a/drivers/leds/leds-mc13783.c b/drivers/leds/leds-mc13783.c +index 8bc4915..4cc6a2e 100644 +--- a/drivers/leds/leds-mc13783.c ++++ b/drivers/leds/leds-mc13783.c +@@ -280,7 +280,7 @@ static int __devinit mc13783_led_probe(struct platform_device *pdev) + return -EINVAL; + } + +- led = kzalloc(sizeof(*led) * pdata->num_leds, GFP_KERNEL); ++ led = kcalloc(pdata->num_leds, sizeof(*led), GFP_KERNEL); + if (led == NULL) { + dev_err(&pdev->dev, "failed to alloc memory\n"); + return -ENOMEM; +diff --git a/drivers/lguest/core.c b/drivers/lguest/core.c +index b5fdcb7..5b6c59f 100644 +--- a/drivers/lguest/core.c ++++ b/drivers/lguest/core.c +@@ -92,9 +92,17 @@ static __init int map_switcher(void) + * it's worked so far. The end address needs +1 because __get_vm_area + * allocates an extra guard page, so we need space for that. + */ ++ ++#if defined(CONFIG_MODULES) && defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++ switcher_vma = __get_vm_area(TOTAL_SWITCHER_PAGES * PAGE_SIZE, ++ VM_ALLOC | VM_KERNEXEC, SWITCHER_ADDR, SWITCHER_ADDR ++ + (TOTAL_SWITCHER_PAGES+1) * PAGE_SIZE); ++#else + switcher_vma = __get_vm_area(TOTAL_SWITCHER_PAGES * PAGE_SIZE, + VM_ALLOC, SWITCHER_ADDR, SWITCHER_ADDR + + (TOTAL_SWITCHER_PAGES+1) * PAGE_SIZE); ++#endif ++ + if (!switcher_vma) { + err = -ENOMEM; + printk("lguest: could not map switcher pages high\n"); +@@ -119,7 +127,7 @@ static __init int map_switcher(void) + * Now the Switcher is mapped at the right address, we can't fail! + * Copy in the compiled-in Switcher code (from x86/switcher_32.S). + */ +- memcpy(switcher_vma->addr, start_switcher_text, ++ memcpy(switcher_vma->addr, ktla_ktva(start_switcher_text), + end_switcher_text - start_switcher_text); + + printk(KERN_INFO "lguest: mapped switcher at %p\n", +diff --git a/drivers/lguest/x86/core.c b/drivers/lguest/x86/core.c +index 3980903..ce25c5e 100644 +--- a/drivers/lguest/x86/core.c ++++ b/drivers/lguest/x86/core.c +@@ -59,7 +59,7 @@ static struct { + /* Offset from where switcher.S was compiled to where we've copied it */ + static unsigned long switcher_offset(void) + { +- return SWITCHER_ADDR - (unsigned long)start_switcher_text; ++ return SWITCHER_ADDR - (unsigned long)ktla_ktva(start_switcher_text); + } + + /* This cpu's struct lguest_pages. */ +@@ -100,7 +100,13 @@ static void copy_in_guest_info(struct lg_cpu *cpu, struct lguest_pages *pages) + * These copies are pretty cheap, so we do them unconditionally: */ + /* Save the current Host top-level page directory. + */ ++ ++#ifdef CONFIG_PAX_PER_CPU_PGD ++ pages->state.host_cr3 = read_cr3(); ++#else + pages->state.host_cr3 = __pa(current->mm->pgd); ++#endif ++ + /* + * Set up the Guest's page tables to see this CPU's pages (and no + * other CPU's pages). +@@ -472,7 +478,7 @@ void __init lguest_arch_host_init(void) + * compiled-in switcher code and the high-mapped copy we just made. + */ + for (i = 0; i < IDT_ENTRIES; i++) +- default_idt_entries[i] += switcher_offset(); ++ default_idt_entries[i] = ktla_ktva(default_idt_entries[i]) + switcher_offset(); + + /* + * Set up the Switcher's per-cpu areas. +@@ -555,7 +561,7 @@ void __init lguest_arch_host_init(void) + * it will be undisturbed when we switch. To change %cs and jump we + * need this structure to feed to Intel's "lcall" instruction. + */ +- lguest_entry.offset = (long)switch_to_guest + switcher_offset(); ++ lguest_entry.offset = (long)ktla_ktva(switch_to_guest) + switcher_offset(); + lguest_entry.segment = LGUEST_CS; + + /* +diff --git a/drivers/lguest/x86/switcher_32.S b/drivers/lguest/x86/switcher_32.S +index 40634b0..4f5855e 100644 +--- a/drivers/lguest/x86/switcher_32.S ++++ b/drivers/lguest/x86/switcher_32.S +@@ -87,6 +87,7 @@ + #include <asm/page.h> + #include <asm/segment.h> + #include <asm/lguest.h> ++#include <asm/processor-flags.h> + + // We mark the start of the code to copy + // It's placed in .text tho it's never run here +@@ -149,6 +150,13 @@ ENTRY(switch_to_guest) + // Changes type when we load it: damn Intel! + // For after we switch over our page tables + // That entry will be read-only: we'd crash. ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ mov %cr0, %edx ++ xor $X86_CR0_WP, %edx ++ mov %edx, %cr0 ++#endif ++ + movl $(GDT_ENTRY_TSS*8), %edx + ltr %dx + +@@ -157,9 +165,15 @@ ENTRY(switch_to_guest) + // Let's clear it again for our return. + // The GDT descriptor of the Host + // Points to the table after two "size" bytes +- movl (LGUEST_PAGES_host_gdt_desc+2)(%eax), %edx ++ movl (LGUEST_PAGES_host_gdt_desc+2)(%eax), %eax + // Clear "used" from type field (byte 5, bit 2) +- andb $0xFD, (GDT_ENTRY_TSS*8 + 5)(%edx) ++ andb $0xFD, (GDT_ENTRY_TSS*8 + 5)(%eax) ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ mov %cr0, %eax ++ xor $X86_CR0_WP, %eax ++ mov %eax, %cr0 ++#endif + + // Once our page table's switched, the Guest is live! + // The Host fades as we run this final step. +@@ -295,13 +309,12 @@ deliver_to_host: + // I consulted gcc, and it gave + // These instructions, which I gladly credit: + leal (%edx,%ebx,8), %eax +- movzwl (%eax),%edx +- movl 4(%eax), %eax +- xorw %ax, %ax +- orl %eax, %edx ++ movl 4(%eax), %edx ++ movw (%eax), %dx + // Now the address of the handler's in %edx + // We call it now: its "iret" drops us home. +- jmp *%edx ++ ljmp $__KERNEL_CS, $1f ++1: jmp *%edx + + // Every interrupt can come to us here + // But we must truly tell each apart. +diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c +index 20e5c2c..9e849a9 100644 +--- a/drivers/macintosh/macio_asic.c ++++ b/drivers/macintosh/macio_asic.c +@@ -748,7 +748,7 @@ static void __devexit macio_pci_remove(struct pci_dev* pdev) + * MacIO is matched against any Apple ID, it's probe() function + * will then decide wether it applies or not + */ +-static const struct pci_device_id __devinitdata pci_ids [] = { { ++static const struct pci_device_id __devinitconst pci_ids [] = { { + .vendor = PCI_VENDOR_ID_APPLE, + .device = PCI_ANY_ID, + .subvendor = PCI_ANY_ID, +diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c +index 17e2b47..bcbeec4 100644 +--- a/drivers/md/bitmap.c ++++ b/drivers/md/bitmap.c +@@ -1823,7 +1823,7 @@ void bitmap_status(struct seq_file *seq, struct bitmap *bitmap) + chunk_kb ? "KB" : "B"); + if (bitmap->file) { + seq_printf(seq, ", file: "); +- seq_path(seq, &bitmap->file->f_path, " \t\n"); ++ seq_path(seq, &bitmap->file->f_path, " \t\n\\"); + } + + seq_printf(seq, "\n"); +diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c +index a1a3e6d..1918bfc 100644 +--- a/drivers/md/dm-ioctl.c ++++ b/drivers/md/dm-ioctl.c +@@ -1590,7 +1590,7 @@ static int validate_params(uint cmd, struct dm_ioctl *param) + cmd == DM_LIST_VERSIONS_CMD) + return 0; + +- if ((cmd == DM_DEV_CREATE_CMD)) { ++ if (cmd == DM_DEV_CREATE_CMD) { + if (!*param->name) { + DMWARN("name not supplied when creating device"); + return -EINVAL; +diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c +index d039de8..0cf5b87 100644 +--- a/drivers/md/dm-raid1.c ++++ b/drivers/md/dm-raid1.c +@@ -40,7 +40,7 @@ enum dm_raid1_error { + + struct mirror { + struct mirror_set *ms; +- atomic_t error_count; ++ atomic_unchecked_t error_count; + unsigned long error_type; + struct dm_dev *dev; + sector_t offset; +@@ -185,7 +185,7 @@ static struct mirror *get_valid_mirror(struct mirror_set *ms) + struct mirror *m; + + for (m = ms->mirror; m < ms->mirror + ms->nr_mirrors; m++) +- if (!atomic_read(&m->error_count)) ++ if (!atomic_read_unchecked(&m->error_count)) + return m; + + return NULL; +@@ -217,7 +217,7 @@ static void fail_mirror(struct mirror *m, enum dm_raid1_error error_type) + * simple way to tell if a device has encountered + * errors. + */ +- atomic_inc(&m->error_count); ++ atomic_inc_unchecked(&m->error_count); + + if (test_and_set_bit(error_type, &m->error_type)) + return; +@@ -408,7 +408,7 @@ static struct mirror *choose_mirror(struct mirror_set *ms, sector_t sector) + struct mirror *m = get_default_mirror(ms); + + do { +- if (likely(!atomic_read(&m->error_count))) ++ if (likely(!atomic_read_unchecked(&m->error_count))) + return m; + + if (m-- == ms->mirror) +@@ -422,7 +422,7 @@ static int default_ok(struct mirror *m) + { + struct mirror *default_mirror = get_default_mirror(m->ms); + +- return !atomic_read(&default_mirror->error_count); ++ return !atomic_read_unchecked(&default_mirror->error_count); + } + + static int mirror_available(struct mirror_set *ms, struct bio *bio) +@@ -559,7 +559,7 @@ static void do_reads(struct mirror_set *ms, struct bio_list *reads) + */ + if (likely(region_in_sync(ms, region, 1))) + m = choose_mirror(ms, bio->bi_sector); +- else if (m && atomic_read(&m->error_count)) ++ else if (m && atomic_read_unchecked(&m->error_count)) + m = NULL; + + if (likely(m)) +@@ -938,7 +938,7 @@ static int get_mirror(struct mirror_set *ms, struct dm_target *ti, + } + + ms->mirror[mirror].ms = ms; +- atomic_set(&(ms->mirror[mirror].error_count), 0); ++ atomic_set_unchecked(&(ms->mirror[mirror].error_count), 0); + ms->mirror[mirror].error_type = 0; + ms->mirror[mirror].offset = offset; + +@@ -1351,7 +1351,7 @@ static void mirror_resume(struct dm_target *ti) + */ + static char device_status_char(struct mirror *m) + { +- if (!atomic_read(&(m->error_count))) ++ if (!atomic_read_unchecked(&(m->error_count))) + return 'A'; + + return (test_bit(DM_RAID1_FLUSH_ERROR, &(m->error_type))) ? 'F' : +diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c +index 35c94ff..20d4c17 100644 +--- a/drivers/md/dm-stripe.c ++++ b/drivers/md/dm-stripe.c +@@ -20,7 +20,7 @@ struct stripe { + struct dm_dev *dev; + sector_t physical_start; + +- atomic_t error_count; ++ atomic_unchecked_t error_count; + }; + + struct stripe_c { +@@ -193,7 +193,7 @@ static int stripe_ctr(struct dm_target *ti, unsigned int argc, char **argv) + kfree(sc); + return r; + } +- atomic_set(&(sc->stripe[i].error_count), 0); ++ atomic_set_unchecked(&(sc->stripe[i].error_count), 0); + } + + ti->private = sc; +@@ -315,7 +315,7 @@ static int stripe_status(struct dm_target *ti, + DMEMIT("%d ", sc->stripes); + for (i = 0; i < sc->stripes; i++) { + DMEMIT("%s ", sc->stripe[i].dev->name); +- buffer[i] = atomic_read(&(sc->stripe[i].error_count)) ? ++ buffer[i] = atomic_read_unchecked(&(sc->stripe[i].error_count)) ? + 'D' : 'A'; + } + buffer[i] = '\0'; +@@ -362,8 +362,8 @@ static int stripe_end_io(struct dm_target *ti, struct bio *bio, + */ + for (i = 0; i < sc->stripes; i++) + if (!strcmp(sc->stripe[i].dev->name, major_minor)) { +- atomic_inc(&(sc->stripe[i].error_count)); +- if (atomic_read(&(sc->stripe[i].error_count)) < ++ atomic_inc_unchecked(&(sc->stripe[i].error_count)); ++ if (atomic_read_unchecked(&(sc->stripe[i].error_count)) < + DM_IO_ERROR_THRESHOLD) + schedule_work(&sc->trigger_event); + } +diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c +index 2e227fb..44ead1f 100644 +--- a/drivers/md/dm-table.c ++++ b/drivers/md/dm-table.c +@@ -390,7 +390,7 @@ static int device_area_is_invalid(struct dm_target *ti, struct dm_dev *dev, + if (!dev_size) + return 0; + +- if ((start >= dev_size) || (start + len > dev_size)) { ++ if ((start >= dev_size) || (len > dev_size - start)) { + DMWARN("%s: %s too small for target: " + "start=%llu, len=%llu, dev_size=%llu", + dm_device_name(ti->table->md), bdevname(bdev, b), +diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c +index 737d388..811ad5a 100644 +--- a/drivers/md/dm-thin-metadata.c ++++ b/drivers/md/dm-thin-metadata.c +@@ -432,7 +432,7 @@ static int init_pmd(struct dm_pool_metadata *pmd, + + pmd->info.tm = tm; + pmd->info.levels = 2; +- pmd->info.value_type.context = pmd->data_sm; ++ pmd->info.value_type.context = (dm_space_map_no_const *)pmd->data_sm; + pmd->info.value_type.size = sizeof(__le64); + pmd->info.value_type.inc = data_block_inc; + pmd->info.value_type.dec = data_block_dec; +@@ -451,7 +451,7 @@ static int init_pmd(struct dm_pool_metadata *pmd, + + pmd->bl_info.tm = tm; + pmd->bl_info.levels = 1; +- pmd->bl_info.value_type.context = pmd->data_sm; ++ pmd->bl_info.value_type.context = (dm_space_map_no_const *)pmd->data_sm; + pmd->bl_info.value_type.size = sizeof(__le64); + pmd->bl_info.value_type.inc = data_block_inc; + pmd->bl_info.value_type.dec = data_block_dec; +diff --git a/drivers/md/dm.c b/drivers/md/dm.c +index e24143c..ce2f21a1 100644 +--- a/drivers/md/dm.c ++++ b/drivers/md/dm.c +@@ -176,9 +176,9 @@ struct mapped_device { + /* + * Event handling. + */ +- atomic_t event_nr; ++ atomic_unchecked_t event_nr; + wait_queue_head_t eventq; +- atomic_t uevent_seq; ++ atomic_unchecked_t uevent_seq; + struct list_head uevent_list; + spinlock_t uevent_lock; /* Protect access to uevent_list */ + +@@ -1845,8 +1845,8 @@ static struct mapped_device *alloc_dev(int minor) + rwlock_init(&md->map_lock); + atomic_set(&md->holders, 1); + atomic_set(&md->open_count, 0); +- atomic_set(&md->event_nr, 0); +- atomic_set(&md->uevent_seq, 0); ++ atomic_set_unchecked(&md->event_nr, 0); ++ atomic_set_unchecked(&md->uevent_seq, 0); + INIT_LIST_HEAD(&md->uevent_list); + spin_lock_init(&md->uevent_lock); + +@@ -1980,7 +1980,7 @@ static void event_callback(void *context) + + dm_send_uevents(&uevents, &disk_to_dev(md->disk)->kobj); + +- atomic_inc(&md->event_nr); ++ atomic_inc_unchecked(&md->event_nr); + wake_up(&md->eventq); + } + +@@ -2622,18 +2622,18 @@ int dm_kobject_uevent(struct mapped_device *md, enum kobject_action action, + + uint32_t dm_next_uevent_seq(struct mapped_device *md) + { +- return atomic_add_return(1, &md->uevent_seq); ++ return atomic_add_return_unchecked(1, &md->uevent_seq); + } + + uint32_t dm_get_event_nr(struct mapped_device *md) + { +- return atomic_read(&md->event_nr); ++ return atomic_read_unchecked(&md->event_nr); + } + + int dm_wait_event(struct mapped_device *md, int event_nr) + { + return wait_event_interruptible(md->eventq, +- (event_nr != atomic_read(&md->event_nr))); ++ (event_nr != atomic_read_unchecked(&md->event_nr))); + } + + void dm_uevent_add(struct mapped_device *md, struct list_head *elist) +diff --git a/drivers/md/md.c b/drivers/md/md.c +index 2b30ffd..bf789ce 100644 +--- a/drivers/md/md.c ++++ b/drivers/md/md.c +@@ -277,10 +277,10 @@ EXPORT_SYMBOL_GPL(md_trim_bio); + * start build, activate spare + */ + static DECLARE_WAIT_QUEUE_HEAD(md_event_waiters); +-static atomic_t md_event_count; ++static atomic_unchecked_t md_event_count; + void md_new_event(struct mddev *mddev) + { +- atomic_inc(&md_event_count); ++ atomic_inc_unchecked(&md_event_count); + wake_up(&md_event_waiters); + } + EXPORT_SYMBOL_GPL(md_new_event); +@@ -290,7 +290,7 @@ EXPORT_SYMBOL_GPL(md_new_event); + */ + static void md_new_event_inintr(struct mddev *mddev) + { +- atomic_inc(&md_event_count); ++ atomic_inc_unchecked(&md_event_count); + wake_up(&md_event_waiters); + } + +@@ -1526,7 +1526,7 @@ static int super_1_load(struct md_rdev *rdev, struct md_rdev *refdev, int minor_ + + rdev->preferred_minor = 0xffff; + rdev->data_offset = le64_to_cpu(sb->data_offset); +- atomic_set(&rdev->corrected_errors, le32_to_cpu(sb->cnt_corrected_read)); ++ atomic_set_unchecked(&rdev->corrected_errors, le32_to_cpu(sb->cnt_corrected_read)); + + rdev->sb_size = le32_to_cpu(sb->max_dev) * 2 + 256; + bmask = queue_logical_block_size(rdev->bdev->bd_disk->queue)-1; +@@ -1745,7 +1745,7 @@ static void super_1_sync(struct mddev *mddev, struct md_rdev *rdev) + else + sb->resync_offset = cpu_to_le64(0); + +- sb->cnt_corrected_read = cpu_to_le32(atomic_read(&rdev->corrected_errors)); ++ sb->cnt_corrected_read = cpu_to_le32(atomic_read_unchecked(&rdev->corrected_errors)); + + sb->raid_disks = cpu_to_le32(mddev->raid_disks); + sb->size = cpu_to_le64(mddev->dev_sectors); +@@ -2691,7 +2691,7 @@ __ATTR(state, S_IRUGO|S_IWUSR, state_show, state_store); + static ssize_t + errors_show(struct md_rdev *rdev, char *page) + { +- return sprintf(page, "%d\n", atomic_read(&rdev->corrected_errors)); ++ return sprintf(page, "%d\n", atomic_read_unchecked(&rdev->corrected_errors)); + } + + static ssize_t +@@ -2700,7 +2700,7 @@ errors_store(struct md_rdev *rdev, const char *buf, size_t len) + char *e; + unsigned long n = simple_strtoul(buf, &e, 10); + if (*buf && (*e == 0 || *e == '\n')) { +- atomic_set(&rdev->corrected_errors, n); ++ atomic_set_unchecked(&rdev->corrected_errors, n); + return len; + } + return -EINVAL; +@@ -3086,8 +3086,8 @@ int md_rdev_init(struct md_rdev *rdev) + rdev->sb_loaded = 0; + rdev->bb_page = NULL; + atomic_set(&rdev->nr_pending, 0); +- atomic_set(&rdev->read_errors, 0); +- atomic_set(&rdev->corrected_errors, 0); ++ atomic_set_unchecked(&rdev->read_errors, 0); ++ atomic_set_unchecked(&rdev->corrected_errors, 0); + + INIT_LIST_HEAD(&rdev->same_set); + init_waitqueue_head(&rdev->blocked_wait); +@@ -6738,7 +6738,7 @@ static int md_seq_show(struct seq_file *seq, void *v) + + spin_unlock(&pers_lock); + seq_printf(seq, "\n"); +- seq->poll_event = atomic_read(&md_event_count); ++ seq->poll_event = atomic_read_unchecked(&md_event_count); + return 0; + } + if (v == (void*)2) { +@@ -6841,7 +6841,7 @@ static int md_seq_open(struct inode *inode, struct file *file) + return error; + + seq = file->private_data; +- seq->poll_event = atomic_read(&md_event_count); ++ seq->poll_event = atomic_read_unchecked(&md_event_count); + return error; + } + +@@ -6855,7 +6855,7 @@ static unsigned int mdstat_poll(struct file *filp, poll_table *wait) + /* always allow read */ + mask = POLLIN | POLLRDNORM; + +- if (seq->poll_event != atomic_read(&md_event_count)) ++ if (seq->poll_event != atomic_read_unchecked(&md_event_count)) + mask |= POLLERR | POLLPRI; + return mask; + } +@@ -6899,7 +6899,7 @@ static int is_mddev_idle(struct mddev *mddev, int init) + struct gendisk *disk = rdev->bdev->bd_contains->bd_disk; + curr_events = (int)part_stat_read(&disk->part0, sectors[0]) + + (int)part_stat_read(&disk->part0, sectors[1]) - +- atomic_read(&disk->sync_io); ++ atomic_read_unchecked(&disk->sync_io); + /* sync IO will cause sync_io to increase before the disk_stats + * as sync_io is counted when a request starts, and + * disk_stats is counted when it completes. +diff --git a/drivers/md/md.h b/drivers/md/md.h +index 1c2063c..9639970 100644 +--- a/drivers/md/md.h ++++ b/drivers/md/md.h +@@ -93,13 +93,13 @@ struct md_rdev { + * only maintained for arrays that + * support hot removal + */ +- atomic_t read_errors; /* number of consecutive read errors that ++ atomic_unchecked_t read_errors; /* number of consecutive read errors that + * we have tried to ignore. + */ + struct timespec last_read_error; /* monotonic time since our + * last read error + */ +- atomic_t corrected_errors; /* number of corrected read errors, ++ atomic_unchecked_t corrected_errors; /* number of corrected read errors, + * for reporting to userspace and storing + * in superblock. + */ +@@ -429,7 +429,7 @@ static inline void rdev_dec_pending(struct md_rdev *rdev, struct mddev *mddev) + + static inline void md_sync_acct(struct block_device *bdev, unsigned long nr_sectors) + { +- atomic_add(nr_sectors, &bdev->bd_contains->bd_disk->sync_io); ++ atomic_add_unchecked(nr_sectors, &bdev->bd_contains->bd_disk->sync_io); + } + + struct md_personality +diff --git a/drivers/md/persistent-data/dm-space-map-checker.c b/drivers/md/persistent-data/dm-space-map-checker.c +index fc90c11..c8cd9a9 100644 +--- a/drivers/md/persistent-data/dm-space-map-checker.c ++++ b/drivers/md/persistent-data/dm-space-map-checker.c +@@ -167,7 +167,7 @@ static int ca_commit(struct count_array *old, struct count_array *new) + /*----------------------------------------------------------------*/ + + struct sm_checker { +- struct dm_space_map sm; ++ dm_space_map_no_const sm; + + struct count_array old_counts; + struct count_array counts; +diff --git a/drivers/md/persistent-data/dm-space-map-disk.c b/drivers/md/persistent-data/dm-space-map-disk.c +index 3d0ed53..35dc592 100644 +--- a/drivers/md/persistent-data/dm-space-map-disk.c ++++ b/drivers/md/persistent-data/dm-space-map-disk.c +@@ -23,7 +23,7 @@ + * Space map interface. + */ + struct sm_disk { +- struct dm_space_map sm; ++ dm_space_map_no_const sm; + + struct ll_disk ll; + struct ll_disk old_ll; +diff --git a/drivers/md/persistent-data/dm-space-map-metadata.c b/drivers/md/persistent-data/dm-space-map-metadata.c +index e89ae5e..062e4c2 100644 +--- a/drivers/md/persistent-data/dm-space-map-metadata.c ++++ b/drivers/md/persistent-data/dm-space-map-metadata.c +@@ -43,7 +43,7 @@ struct block_op { + }; + + struct sm_metadata { +- struct dm_space_map sm; ++ dm_space_map_no_const sm; + + struct ll_disk ll; + struct ll_disk old_ll; +diff --git a/drivers/md/persistent-data/dm-space-map.h b/drivers/md/persistent-data/dm-space-map.h +index 1cbfc6b..56e1dbb 100644 +--- a/drivers/md/persistent-data/dm-space-map.h ++++ b/drivers/md/persistent-data/dm-space-map.h +@@ -60,6 +60,7 @@ struct dm_space_map { + int (*root_size)(struct dm_space_map *sm, size_t *result); + int (*copy_root)(struct dm_space_map *sm, void *copy_to_here_le, size_t len); + }; ++typedef struct dm_space_map __no_const dm_space_map_no_const; + + /*----------------------------------------------------------------*/ + +diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c +index d7e9577..faa512f2 100644 +--- a/drivers/md/raid1.c ++++ b/drivers/md/raid1.c +@@ -1688,7 +1688,7 @@ static int fix_sync_read_error(struct r1bio *r1_bio) + if (r1_sync_page_io(rdev, sect, s, + bio->bi_io_vec[idx].bv_page, + READ) != 0) +- atomic_add(s, &rdev->corrected_errors); ++ atomic_add_unchecked(s, &rdev->corrected_errors); + } + sectors -= s; + sect += s; +@@ -1902,7 +1902,7 @@ static void fix_read_error(struct r1conf *conf, int read_disk, + test_bit(In_sync, &rdev->flags)) { + if (r1_sync_page_io(rdev, sect, s, + conf->tmppage, READ)) { +- atomic_add(s, &rdev->corrected_errors); ++ atomic_add_unchecked(s, &rdev->corrected_errors); + printk(KERN_INFO + "md/raid1:%s: read error corrected " + "(%d sectors at %llu on %s)\n", +diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c +index a954c95..6e7a21c 100644 +--- a/drivers/md/raid10.c ++++ b/drivers/md/raid10.c +@@ -1684,7 +1684,7 @@ static void end_sync_read(struct bio *bio, int error) + /* The write handler will notice the lack of + * R10BIO_Uptodate and record any errors etc + */ +- atomic_add(r10_bio->sectors, ++ atomic_add_unchecked(r10_bio->sectors, + &conf->mirrors[d].rdev->corrected_errors); + + /* for reconstruct, we always reschedule after a read. +@@ -2033,7 +2033,7 @@ static void check_decay_read_errors(struct mddev *mddev, struct md_rdev *rdev) + { + struct timespec cur_time_mon; + unsigned long hours_since_last; +- unsigned int read_errors = atomic_read(&rdev->read_errors); ++ unsigned int read_errors = atomic_read_unchecked(&rdev->read_errors); + + ktime_get_ts(&cur_time_mon); + +@@ -2055,9 +2055,9 @@ static void check_decay_read_errors(struct mddev *mddev, struct md_rdev *rdev) + * overflowing the shift of read_errors by hours_since_last. + */ + if (hours_since_last >= 8 * sizeof(read_errors)) +- atomic_set(&rdev->read_errors, 0); ++ atomic_set_unchecked(&rdev->read_errors, 0); + else +- atomic_set(&rdev->read_errors, read_errors >> hours_since_last); ++ atomic_set_unchecked(&rdev->read_errors, read_errors >> hours_since_last); + } + + static int r10_sync_page_io(struct md_rdev *rdev, sector_t sector, +@@ -2111,8 +2111,8 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10 + return; + + check_decay_read_errors(mddev, rdev); +- atomic_inc(&rdev->read_errors); +- if (atomic_read(&rdev->read_errors) > max_read_errors) { ++ atomic_inc_unchecked(&rdev->read_errors); ++ if (atomic_read_unchecked(&rdev->read_errors) > max_read_errors) { + char b[BDEVNAME_SIZE]; + bdevname(rdev->bdev, b); + +@@ -2120,7 +2120,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10 + "md/raid10:%s: %s: Raid device exceeded " + "read_error threshold [cur %d:max %d]\n", + mdname(mddev), b, +- atomic_read(&rdev->read_errors), max_read_errors); ++ atomic_read_unchecked(&rdev->read_errors), max_read_errors); + printk(KERN_NOTICE + "md/raid10:%s: %s: Failing raid device\n", + mdname(mddev), b); +@@ -2271,7 +2271,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10 + (unsigned long long)( + sect + rdev->data_offset), + bdevname(rdev->bdev, b)); +- atomic_add(s, &rdev->corrected_errors); ++ atomic_add_unchecked(s, &rdev->corrected_errors); + } + + rdev_dec_pending(rdev, mddev); +diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c +index 73a5800..2b0e3b1 100644 +--- a/drivers/md/raid5.c ++++ b/drivers/md/raid5.c +@@ -1694,18 +1694,18 @@ static void raid5_end_read_request(struct bio * bi, int error) + (unsigned long long)(sh->sector + + rdev->data_offset), + bdevname(rdev->bdev, b)); +- atomic_add(STRIPE_SECTORS, &rdev->corrected_errors); ++ atomic_add_unchecked(STRIPE_SECTORS, &rdev->corrected_errors); + clear_bit(R5_ReadError, &sh->dev[i].flags); + clear_bit(R5_ReWrite, &sh->dev[i].flags); + } +- if (atomic_read(&rdev->read_errors)) +- atomic_set(&rdev->read_errors, 0); ++ if (atomic_read_unchecked(&rdev->read_errors)) ++ atomic_set_unchecked(&rdev->read_errors, 0); + } else { + const char *bdn = bdevname(rdev->bdev, b); + int retry = 0; + + clear_bit(R5_UPTODATE, &sh->dev[i].flags); +- atomic_inc(&rdev->read_errors); ++ atomic_inc_unchecked(&rdev->read_errors); + if (test_bit(R5_ReadRepl, &sh->dev[i].flags)) + printk_ratelimited( + KERN_WARNING +@@ -1734,7 +1734,7 @@ static void raid5_end_read_request(struct bio * bi, int error) + (unsigned long long)(sh->sector + + rdev->data_offset), + bdn); +- else if (atomic_read(&rdev->read_errors) ++ else if (atomic_read_unchecked(&rdev->read_errors) + > conf->max_nr_stripes) + printk(KERN_WARNING + "md/raid:%s: Too many read errors, failing device %s.\n", +diff --git a/drivers/media/dvb/ddbridge/ddbridge-core.c b/drivers/media/dvb/ddbridge/ddbridge-core.c +index d88c4aa..17c80b1 100644 +--- a/drivers/media/dvb/ddbridge/ddbridge-core.c ++++ b/drivers/media/dvb/ddbridge/ddbridge-core.c +@@ -1679,7 +1679,7 @@ static struct ddb_info ddb_v6 = { + .subvendor = _subvend, .subdevice = _subdev, \ + .driver_data = (unsigned long)&_driverdata } + +-static const struct pci_device_id ddb_id_tbl[] __devinitdata = { ++static const struct pci_device_id ddb_id_tbl[] __devinitconst = { + DDB_ID(DDVID, 0x0002, DDVID, 0x0001, ddb_octopus), + DDB_ID(DDVID, 0x0003, DDVID, 0x0001, ddb_octopus), + DDB_ID(DDVID, 0x0003, DDVID, 0x0002, ddb_octopus_le), +diff --git a/drivers/media/dvb/dvb-core/dvb_demux.h b/drivers/media/dvb/dvb-core/dvb_demux.h +index a7d876f..8c21b61 100644 +--- a/drivers/media/dvb/dvb-core/dvb_demux.h ++++ b/drivers/media/dvb/dvb-core/dvb_demux.h +@@ -73,7 +73,7 @@ struct dvb_demux_feed { + union { + dmx_ts_cb ts; + dmx_section_cb sec; +- } cb; ++ } __no_const cb; + + struct dvb_demux *demux; + void *priv; +diff --git a/drivers/media/dvb/dvb-core/dvbdev.c b/drivers/media/dvb/dvb-core/dvbdev.c +index 00a6732..70a682e 100644 +--- a/drivers/media/dvb/dvb-core/dvbdev.c ++++ b/drivers/media/dvb/dvb-core/dvbdev.c +@@ -192,7 +192,7 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, + const struct dvb_device *template, void *priv, int type) + { + struct dvb_device *dvbdev; +- struct file_operations *dvbdevfops; ++ file_operations_no_const *dvbdevfops; + struct device *clsdev; + int minor; + int id; +diff --git a/drivers/media/dvb/dvb-usb/cxusb.c b/drivers/media/dvb/dvb-usb/cxusb.c +index 3940bb0..fb3952a 100644 +--- a/drivers/media/dvb/dvb-usb/cxusb.c ++++ b/drivers/media/dvb/dvb-usb/cxusb.c +@@ -1068,7 +1068,7 @@ static struct dib0070_config dib7070p_dib0070_config = { + + struct dib0700_adapter_state { + int (*set_param_save) (struct dvb_frontend *); +-}; ++} __no_const; + + static int dib7070_set_param_override(struct dvb_frontend *fe) + { +diff --git a/drivers/media/dvb/dvb-usb/dw2102.c b/drivers/media/dvb/dvb-usb/dw2102.c +index 451c5a7..649f711 100644 +--- a/drivers/media/dvb/dvb-usb/dw2102.c ++++ b/drivers/media/dvb/dvb-usb/dw2102.c +@@ -95,7 +95,7 @@ struct su3000_state { + + struct s6x0_state { + int (*old_set_voltage)(struct dvb_frontend *f, fe_sec_voltage_t v); +-}; ++} __no_const; + + /* debug */ + static int dvb_usb_dw2102_debug; +diff --git a/drivers/media/dvb/frontends/dib3000.h b/drivers/media/dvb/frontends/dib3000.h +index 404f63a..4796533 100644 +--- a/drivers/media/dvb/frontends/dib3000.h ++++ b/drivers/media/dvb/frontends/dib3000.h +@@ -39,7 +39,7 @@ struct dib_fe_xfer_ops + int (*fifo_ctrl)(struct dvb_frontend *fe, int onoff); + int (*pid_ctrl)(struct dvb_frontend *fe, int index, int pid, int onoff); + int (*tuner_pass_ctrl)(struct dvb_frontend *fe, int onoff, u8 pll_ctrl); +-}; ++} __no_const; + + #if defined(CONFIG_DVB_DIB3000MB) || (defined(CONFIG_DVB_DIB3000MB_MODULE) && defined(MODULE)) + extern struct dvb_frontend* dib3000mb_attach(const struct dib3000_config* config, +diff --git a/drivers/media/dvb/ngene/ngene-cards.c b/drivers/media/dvb/ngene/ngene-cards.c +index 7539a5d..06531a6 100644 +--- a/drivers/media/dvb/ngene/ngene-cards.c ++++ b/drivers/media/dvb/ngene/ngene-cards.c +@@ -478,7 +478,7 @@ static struct ngene_info ngene_info_m780 = { + + /****************************************************************************/ + +-static const struct pci_device_id ngene_id_tbl[] __devinitdata = { ++static const struct pci_device_id ngene_id_tbl[] __devinitconst = { + NGENE_ID(0x18c3, 0xabc3, ngene_info_cineS2), + NGENE_ID(0x18c3, 0xabc4, ngene_info_cineS2), + NGENE_ID(0x18c3, 0xdb01, ngene_info_satixS2), +diff --git a/drivers/media/radio/radio-cadet.c b/drivers/media/radio/radio-cadet.c +index 16a089f..1661b11 100644 +--- a/drivers/media/radio/radio-cadet.c ++++ b/drivers/media/radio/radio-cadet.c +@@ -326,6 +326,8 @@ static ssize_t cadet_read(struct file *file, char __user *data, size_t count, lo + unsigned char readbuf[RDS_BUFFER]; + int i = 0; + ++ if (count > RDS_BUFFER) ++ return -EFAULT; + mutex_lock(&dev->lock); + if (dev->rdsstat == 0) { + dev->rdsstat = 1; +@@ -347,7 +349,7 @@ static ssize_t cadet_read(struct file *file, char __user *data, size_t count, lo + readbuf[i++] = dev->rdsbuf[dev->rdsout++]; + mutex_unlock(&dev->lock); + +- if (copy_to_user(data, readbuf, i)) ++ if (i > sizeof(readbuf) || copy_to_user(data, readbuf, i)) + return -EFAULT; + return i; + } +diff --git a/drivers/media/video/au0828/au0828.h b/drivers/media/video/au0828/au0828.h +index 9cde353..8c6a1c3 100644 +--- a/drivers/media/video/au0828/au0828.h ++++ b/drivers/media/video/au0828/au0828.h +@@ -191,7 +191,7 @@ struct au0828_dev { + + /* I2C */ + struct i2c_adapter i2c_adap; +- struct i2c_algorithm i2c_algo; ++ i2c_algorithm_no_const i2c_algo; + struct i2c_client i2c_client; + u32 i2c_rc; + +diff --git a/drivers/media/video/cx88/cx88-alsa.c b/drivers/media/video/cx88/cx88-alsa.c +index 04bf662..e0ac026 100644 +--- a/drivers/media/video/cx88/cx88-alsa.c ++++ b/drivers/media/video/cx88/cx88-alsa.c +@@ -766,7 +766,7 @@ static struct snd_kcontrol_new snd_cx88_alc_switch = { + * Only boards with eeprom and byte 1 at eeprom=1 have it + */ + +-static const struct pci_device_id const cx88_audio_pci_tbl[] __devinitdata = { ++static const struct pci_device_id const cx88_audio_pci_tbl[] __devinitconst = { + {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0}, + {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0}, + {0, } +diff --git a/drivers/media/video/omap/omap_vout.c b/drivers/media/video/omap/omap_vout.c +index 88cf9d9..bbc4b2c 100644 +--- a/drivers/media/video/omap/omap_vout.c ++++ b/drivers/media/video/omap/omap_vout.c +@@ -64,7 +64,6 @@ enum omap_vout_channels { + OMAP_VIDEO2, + }; + +-static struct videobuf_queue_ops video_vbq_ops; + /* Variables configurable through module params*/ + static u32 video1_numbuffers = 3; + static u32 video2_numbuffers = 3; +@@ -1000,6 +999,12 @@ static int omap_vout_open(struct file *file) + { + struct videobuf_queue *q; + struct omap_vout_device *vout = NULL; ++ static struct videobuf_queue_ops video_vbq_ops = { ++ .buf_setup = omap_vout_buffer_setup, ++ .buf_prepare = omap_vout_buffer_prepare, ++ .buf_release = omap_vout_buffer_release, ++ .buf_queue = omap_vout_buffer_queue, ++ }; + + vout = video_drvdata(file); + v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__); +@@ -1017,10 +1022,6 @@ static int omap_vout_open(struct file *file) + vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; + + q = &vout->vbq; +- video_vbq_ops.buf_setup = omap_vout_buffer_setup; +- video_vbq_ops.buf_prepare = omap_vout_buffer_prepare; +- video_vbq_ops.buf_release = omap_vout_buffer_release; +- video_vbq_ops.buf_queue = omap_vout_buffer_queue; + spin_lock_init(&vout->vbq_lock); + + videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev, +diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h b/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h +index 305e6aa..0143317 100644 +--- a/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h ++++ b/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h +@@ -196,7 +196,7 @@ struct pvr2_hdw { + + /* I2C stuff */ + struct i2c_adapter i2c_adap; +- struct i2c_algorithm i2c_algo; ++ i2c_algorithm_no_const i2c_algo; + pvr2_i2c_func i2c_func[PVR2_I2C_FUNC_CNT]; + int i2c_cx25840_hack_state; + int i2c_linked; +diff --git a/drivers/media/video/timblogiw.c b/drivers/media/video/timblogiw.c +index 02194c0..091733b 100644 +--- a/drivers/media/video/timblogiw.c ++++ b/drivers/media/video/timblogiw.c +@@ -745,7 +745,7 @@ static int timblogiw_mmap(struct file *file, struct vm_area_struct *vma) + + /* Platform device functions */ + +-static __devinitconst struct v4l2_ioctl_ops timblogiw_ioctl_ops = { ++static __devinitconst v4l2_ioctl_ops_no_const timblogiw_ioctl_ops = { + .vidioc_querycap = timblogiw_querycap, + .vidioc_enum_fmt_vid_cap = timblogiw_enum_fmt, + .vidioc_g_fmt_vid_cap = timblogiw_g_fmt, +@@ -767,7 +767,7 @@ static __devinitconst struct v4l2_ioctl_ops timblogiw_ioctl_ops = { + .vidioc_enum_framesizes = timblogiw_enum_framesizes, + }; + +-static __devinitconst struct v4l2_file_operations timblogiw_fops = { ++static __devinitconst v4l2_file_operations_no_const timblogiw_fops = { + .owner = THIS_MODULE, + .open = timblogiw_open, + .release = timblogiw_close, +diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c +index a5c591f..db692a3 100644 +--- a/drivers/message/fusion/mptbase.c ++++ b/drivers/message/fusion/mptbase.c +@@ -6754,8 +6754,13 @@ static int mpt_iocinfo_proc_show(struct seq_file *m, void *v) + seq_printf(m, " MaxChainDepth = 0x%02x frames\n", ioc->facts.MaxChainDepth); + seq_printf(m, " MinBlockSize = 0x%02x bytes\n", 4*ioc->facts.BlockSize); + ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ seq_printf(m, " RequestFrames @ 0x%p (Dma @ 0x%p)\n", NULL, NULL); ++#else + seq_printf(m, " RequestFrames @ 0x%p (Dma @ 0x%p)\n", + (void *)ioc->req_frames, (void *)(ulong)ioc->req_frames_dma); ++#endif ++ + /* + * Rounding UP to nearest 4-kB boundary here... + */ +diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c +index 551262e..7551198 100644 +--- a/drivers/message/fusion/mptsas.c ++++ b/drivers/message/fusion/mptsas.c +@@ -446,6 +446,23 @@ mptsas_is_end_device(struct mptsas_devinfo * attached) + return 0; + } + ++static inline void ++mptsas_set_rphy(MPT_ADAPTER *ioc, struct mptsas_phyinfo *phy_info, struct sas_rphy *rphy) ++{ ++ if (phy_info->port_details) { ++ phy_info->port_details->rphy = rphy; ++ dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "sas_rphy_add: rphy=%p\n", ++ ioc->name, rphy)); ++ } ++ ++ if (rphy) { ++ dsaswideprintk(ioc, dev_printk(KERN_DEBUG, ++ &rphy->dev, MYIOC_s_FMT "add:", ioc->name)); ++ dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "rphy=%p release=%p\n", ++ ioc->name, rphy, rphy->dev.release)); ++ } ++} ++ + /* no mutex */ + static void + mptsas_port_delete(MPT_ADAPTER *ioc, struct mptsas_portinfo_details * port_details) +@@ -484,23 +501,6 @@ mptsas_get_rphy(struct mptsas_phyinfo *phy_info) + return NULL; + } + +-static inline void +-mptsas_set_rphy(MPT_ADAPTER *ioc, struct mptsas_phyinfo *phy_info, struct sas_rphy *rphy) +-{ +- if (phy_info->port_details) { +- phy_info->port_details->rphy = rphy; +- dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "sas_rphy_add: rphy=%p\n", +- ioc->name, rphy)); +- } +- +- if (rphy) { +- dsaswideprintk(ioc, dev_printk(KERN_DEBUG, +- &rphy->dev, MYIOC_s_FMT "add:", ioc->name)); +- dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "rphy=%p release=%p\n", +- ioc->name, rphy, rphy->dev.release)); +- } +-} +- + static inline struct sas_port * + mptsas_get_port(struct mptsas_phyinfo *phy_info) + { +diff --git a/drivers/message/fusion/mptscsih.c b/drivers/message/fusion/mptscsih.c +index 0c3ced7..1fe34ec 100644 +--- a/drivers/message/fusion/mptscsih.c ++++ b/drivers/message/fusion/mptscsih.c +@@ -1270,15 +1270,16 @@ mptscsih_info(struct Scsi_Host *SChost) + + h = shost_priv(SChost); + +- if (h) { +- if (h->info_kbuf == NULL) +- if ((h->info_kbuf = kmalloc(0x1000 /* 4Kb */, GFP_KERNEL)) == NULL) +- return h->info_kbuf; +- h->info_kbuf[0] = '\0'; ++ if (!h) ++ return NULL; + +- mpt_print_ioc_summary(h->ioc, h->info_kbuf, &size, 0, 0); +- h->info_kbuf[size-1] = '\0'; +- } ++ if (h->info_kbuf == NULL) ++ if ((h->info_kbuf = kmalloc(0x1000 /* 4Kb */, GFP_KERNEL)) == NULL) ++ return h->info_kbuf; ++ h->info_kbuf[0] = '\0'; ++ ++ mpt_print_ioc_summary(h->ioc, h->info_kbuf, &size, 0, 0); ++ h->info_kbuf[size-1] = '\0'; + + return h->info_kbuf; + } +diff --git a/drivers/message/i2o/i2o_proc.c b/drivers/message/i2o/i2o_proc.c +index 6d115c7..58ff7fd 100644 +--- a/drivers/message/i2o/i2o_proc.c ++++ b/drivers/message/i2o/i2o_proc.c +@@ -255,13 +255,6 @@ static char *scsi_devices[] = { + "Array Controller Device" + }; + +-static char *chtostr(u8 * chars, int n) +-{ +- char tmp[256]; +- tmp[0] = 0; +- return strncat(tmp, (char *)chars, n); +-} +- + static int i2o_report_query_status(struct seq_file *seq, int block_status, + char *group) + { +@@ -838,8 +831,7 @@ static int i2o_seq_show_ddm_table(struct seq_file *seq, void *v) + + seq_printf(seq, "%-#7x", ddm_table.i2o_vendor_id); + seq_printf(seq, "%-#8x", ddm_table.module_id); +- seq_printf(seq, "%-29s", +- chtostr(ddm_table.module_name_version, 28)); ++ seq_printf(seq, "%-.28s", ddm_table.module_name_version); + seq_printf(seq, "%9d ", ddm_table.data_size); + seq_printf(seq, "%8d", ddm_table.code_size); + +@@ -940,8 +932,8 @@ static int i2o_seq_show_drivers_stored(struct seq_file *seq, void *v) + + seq_printf(seq, "%-#7x", dst->i2o_vendor_id); + seq_printf(seq, "%-#8x", dst->module_id); +- seq_printf(seq, "%-29s", chtostr(dst->module_name_version, 28)); +- seq_printf(seq, "%-9s", chtostr(dst->date, 8)); ++ seq_printf(seq, "%-.28s", dst->module_name_version); ++ seq_printf(seq, "%-.8s", dst->date); + seq_printf(seq, "%8d ", dst->module_size); + seq_printf(seq, "%8d ", dst->mpb_size); + seq_printf(seq, "0x%04x", dst->module_flags); +@@ -1272,14 +1264,10 @@ static int i2o_seq_show_dev_identity(struct seq_file *seq, void *v) + seq_printf(seq, "Device Class : %s\n", i2o_get_class_name(work16[0])); + seq_printf(seq, "Owner TID : %0#5x\n", work16[2]); + seq_printf(seq, "Parent TID : %0#5x\n", work16[3]); +- seq_printf(seq, "Vendor info : %s\n", +- chtostr((u8 *) (work32 + 2), 16)); +- seq_printf(seq, "Product info : %s\n", +- chtostr((u8 *) (work32 + 6), 16)); +- seq_printf(seq, "Description : %s\n", +- chtostr((u8 *) (work32 + 10), 16)); +- seq_printf(seq, "Product rev. : %s\n", +- chtostr((u8 *) (work32 + 14), 8)); ++ seq_printf(seq, "Vendor info : %.16s\n", (u8 *) (work32 + 2)); ++ seq_printf(seq, "Product info : %.16s\n", (u8 *) (work32 + 6)); ++ seq_printf(seq, "Description : %.16s\n", (u8 *) (work32 + 10)); ++ seq_printf(seq, "Product rev. : %.8s\n", (u8 *) (work32 + 14)); + + seq_printf(seq, "Serial number : "); + print_serial_number(seq, (u8 *) (work32 + 16), +@@ -1324,10 +1312,8 @@ static int i2o_seq_show_ddm_identity(struct seq_file *seq, void *v) + } + + seq_printf(seq, "Registering DDM TID : 0x%03x\n", result.ddm_tid); +- seq_printf(seq, "Module name : %s\n", +- chtostr(result.module_name, 24)); +- seq_printf(seq, "Module revision : %s\n", +- chtostr(result.module_rev, 8)); ++ seq_printf(seq, "Module name : %.24s\n", result.module_name); ++ seq_printf(seq, "Module revision : %.8s\n", result.module_rev); + + seq_printf(seq, "Serial number : "); + print_serial_number(seq, result.serial_number, sizeof(result) - 36); +@@ -1358,14 +1344,10 @@ static int i2o_seq_show_uinfo(struct seq_file *seq, void *v) + return 0; + } + +- seq_printf(seq, "Device name : %s\n", +- chtostr(result.device_name, 64)); +- seq_printf(seq, "Service name : %s\n", +- chtostr(result.service_name, 64)); +- seq_printf(seq, "Physical name : %s\n", +- chtostr(result.physical_location, 64)); +- seq_printf(seq, "Instance number : %s\n", +- chtostr(result.instance_number, 4)); ++ seq_printf(seq, "Device name : %.64s\n", result.device_name); ++ seq_printf(seq, "Service name : %.64s\n", result.service_name); ++ seq_printf(seq, "Physical name : %.64s\n", result.physical_location); ++ seq_printf(seq, "Instance number : %.4s\n", result.instance_number); + + return 0; + } +diff --git a/drivers/message/i2o/iop.c b/drivers/message/i2o/iop.c +index a8c08f3..155fe3d 100644 +--- a/drivers/message/i2o/iop.c ++++ b/drivers/message/i2o/iop.c +@@ -111,10 +111,10 @@ u32 i2o_cntxt_list_add(struct i2o_controller * c, void *ptr) + + spin_lock_irqsave(&c->context_list_lock, flags); + +- if (unlikely(atomic_inc_and_test(&c->context_list_counter))) +- atomic_inc(&c->context_list_counter); ++ if (unlikely(atomic_inc_and_test_unchecked(&c->context_list_counter))) ++ atomic_inc_unchecked(&c->context_list_counter); + +- entry->context = atomic_read(&c->context_list_counter); ++ entry->context = atomic_read_unchecked(&c->context_list_counter); + + list_add(&entry->list, &c->context_list); + +@@ -1077,7 +1077,7 @@ struct i2o_controller *i2o_iop_alloc(void) + + #if BITS_PER_LONG == 64 + spin_lock_init(&c->context_list_lock); +- atomic_set(&c->context_list_counter, 0); ++ atomic_set_unchecked(&c->context_list_counter, 0); + INIT_LIST_HEAD(&c->context_list); + #endif + +diff --git a/drivers/mfd/abx500-core.c b/drivers/mfd/abx500-core.c +index 7ce65f4..e66e9bc 100644 +--- a/drivers/mfd/abx500-core.c ++++ b/drivers/mfd/abx500-core.c +@@ -15,7 +15,7 @@ static LIST_HEAD(abx500_list); + + struct abx500_device_entry { + struct list_head list; +- struct abx500_ops ops; ++ abx500_ops_no_const ops; + struct device *dev; + }; + +diff --git a/drivers/mfd/janz-cmodio.c b/drivers/mfd/janz-cmodio.c +index a9223ed..4127b13 100644 +--- a/drivers/mfd/janz-cmodio.c ++++ b/drivers/mfd/janz-cmodio.c +@@ -13,6 +13,7 @@ + + #include <linux/kernel.h> + #include <linux/module.h> ++#include <linux/slab.h> + #include <linux/init.h> + #include <linux/pci.h> + #include <linux/interrupt.h> +diff --git a/drivers/misc/lis3lv02d/lis3lv02d.c b/drivers/misc/lis3lv02d/lis3lv02d.c +index a981e2a..5ca0c8b 100644 +--- a/drivers/misc/lis3lv02d/lis3lv02d.c ++++ b/drivers/misc/lis3lv02d/lis3lv02d.c +@@ -466,7 +466,7 @@ static irqreturn_t lis302dl_interrupt(int irq, void *data) + * the lid is closed. This leads to interrupts as soon as a little move + * is done. + */ +- atomic_inc(&lis3->count); ++ atomic_inc_unchecked(&lis3->count); + + wake_up_interruptible(&lis3->misc_wait); + kill_fasync(&lis3->async_queue, SIGIO, POLL_IN); +@@ -552,7 +552,7 @@ static int lis3lv02d_misc_open(struct inode *inode, struct file *file) + if (lis3->pm_dev) + pm_runtime_get_sync(lis3->pm_dev); + +- atomic_set(&lis3->count, 0); ++ atomic_set_unchecked(&lis3->count, 0); + return 0; + } + +@@ -585,7 +585,7 @@ static ssize_t lis3lv02d_misc_read(struct file *file, char __user *buf, + add_wait_queue(&lis3->misc_wait, &wait); + while (true) { + set_current_state(TASK_INTERRUPTIBLE); +- data = atomic_xchg(&lis3->count, 0); ++ data = atomic_xchg_unchecked(&lis3->count, 0); + if (data) + break; + +@@ -626,7 +626,7 @@ static unsigned int lis3lv02d_misc_poll(struct file *file, poll_table *wait) + struct lis3lv02d, miscdev); + + poll_wait(file, &lis3->misc_wait, wait); +- if (atomic_read(&lis3->count)) ++ if (atomic_read_unchecked(&lis3->count)) + return POLLIN | POLLRDNORM; + return 0; + } +diff --git a/drivers/misc/lis3lv02d/lis3lv02d.h b/drivers/misc/lis3lv02d/lis3lv02d.h +index 2b1482a..5d33616 100644 +--- a/drivers/misc/lis3lv02d/lis3lv02d.h ++++ b/drivers/misc/lis3lv02d/lis3lv02d.h +@@ -266,7 +266,7 @@ struct lis3lv02d { + struct input_polled_dev *idev; /* input device */ + struct platform_device *pdev; /* platform device */ + struct regulator_bulk_data regulators[2]; +- atomic_t count; /* interrupt count after last read */ ++ atomic_unchecked_t count; /* interrupt count after last read */ + union axis_conversion ac; /* hw -> logical axis */ + int mapped_btns[3]; + +diff --git a/drivers/misc/sgi-gru/gruhandles.c b/drivers/misc/sgi-gru/gruhandles.c +index 2f30bad..c4c13d0 100644 +--- a/drivers/misc/sgi-gru/gruhandles.c ++++ b/drivers/misc/sgi-gru/gruhandles.c +@@ -44,8 +44,8 @@ static void update_mcs_stats(enum mcs_op op, unsigned long clks) + unsigned long nsec; + + nsec = CLKS2NSEC(clks); +- atomic_long_inc(&mcs_op_statistics[op].count); +- atomic_long_add(nsec, &mcs_op_statistics[op].total); ++ atomic_long_inc_unchecked(&mcs_op_statistics[op].count); ++ atomic_long_add_unchecked(nsec, &mcs_op_statistics[op].total); + if (mcs_op_statistics[op].max < nsec) + mcs_op_statistics[op].max = nsec; + } +diff --git a/drivers/misc/sgi-gru/gruprocfs.c b/drivers/misc/sgi-gru/gruprocfs.c +index 950dbe9..eeef0f8 100644 +--- a/drivers/misc/sgi-gru/gruprocfs.c ++++ b/drivers/misc/sgi-gru/gruprocfs.c +@@ -32,9 +32,9 @@ + + #define printstat(s, f) printstat_val(s, &gru_stats.f, #f) + +-static void printstat_val(struct seq_file *s, atomic_long_t *v, char *id) ++static void printstat_val(struct seq_file *s, atomic_long_unchecked_t *v, char *id) + { +- unsigned long val = atomic_long_read(v); ++ unsigned long val = atomic_long_read_unchecked(v); + + seq_printf(s, "%16lu %s\n", val, id); + } +@@ -134,8 +134,8 @@ static int mcs_statistics_show(struct seq_file *s, void *p) + + seq_printf(s, "%-20s%12s%12s%12s\n", "#id", "count", "aver-clks", "max-clks"); + for (op = 0; op < mcsop_last; op++) { +- count = atomic_long_read(&mcs_op_statistics[op].count); +- total = atomic_long_read(&mcs_op_statistics[op].total); ++ count = atomic_long_read_unchecked(&mcs_op_statistics[op].count); ++ total = atomic_long_read_unchecked(&mcs_op_statistics[op].total); + max = mcs_op_statistics[op].max; + seq_printf(s, "%-20s%12ld%12ld%12ld\n", id[op], count, + count ? total / count : 0, max); +diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h +index 5c3ce24..4915ccb 100644 +--- a/drivers/misc/sgi-gru/grutables.h ++++ b/drivers/misc/sgi-gru/grutables.h +@@ -167,82 +167,82 @@ extern unsigned int gru_max_gids; + * GRU statistics. + */ + struct gru_stats_s { +- atomic_long_t vdata_alloc; +- atomic_long_t vdata_free; +- atomic_long_t gts_alloc; +- atomic_long_t gts_free; +- atomic_long_t gms_alloc; +- atomic_long_t gms_free; +- atomic_long_t gts_double_allocate; +- atomic_long_t assign_context; +- atomic_long_t assign_context_failed; +- atomic_long_t free_context; +- atomic_long_t load_user_context; +- atomic_long_t load_kernel_context; +- atomic_long_t lock_kernel_context; +- atomic_long_t unlock_kernel_context; +- atomic_long_t steal_user_context; +- atomic_long_t steal_kernel_context; +- atomic_long_t steal_context_failed; +- atomic_long_t nopfn; +- atomic_long_t asid_new; +- atomic_long_t asid_next; +- atomic_long_t asid_wrap; +- atomic_long_t asid_reuse; +- atomic_long_t intr; +- atomic_long_t intr_cbr; +- atomic_long_t intr_tfh; +- atomic_long_t intr_spurious; +- atomic_long_t intr_mm_lock_failed; +- atomic_long_t call_os; +- atomic_long_t call_os_wait_queue; +- atomic_long_t user_flush_tlb; +- atomic_long_t user_unload_context; +- atomic_long_t user_exception; +- atomic_long_t set_context_option; +- atomic_long_t check_context_retarget_intr; +- atomic_long_t check_context_unload; +- atomic_long_t tlb_dropin; +- atomic_long_t tlb_preload_page; +- atomic_long_t tlb_dropin_fail_no_asid; +- atomic_long_t tlb_dropin_fail_upm; +- atomic_long_t tlb_dropin_fail_invalid; +- atomic_long_t tlb_dropin_fail_range_active; +- atomic_long_t tlb_dropin_fail_idle; +- atomic_long_t tlb_dropin_fail_fmm; +- atomic_long_t tlb_dropin_fail_no_exception; +- atomic_long_t tfh_stale_on_fault; +- atomic_long_t mmu_invalidate_range; +- atomic_long_t mmu_invalidate_page; +- atomic_long_t flush_tlb; +- atomic_long_t flush_tlb_gru; +- atomic_long_t flush_tlb_gru_tgh; +- atomic_long_t flush_tlb_gru_zero_asid; ++ atomic_long_unchecked_t vdata_alloc; ++ atomic_long_unchecked_t vdata_free; ++ atomic_long_unchecked_t gts_alloc; ++ atomic_long_unchecked_t gts_free; ++ atomic_long_unchecked_t gms_alloc; ++ atomic_long_unchecked_t gms_free; ++ atomic_long_unchecked_t gts_double_allocate; ++ atomic_long_unchecked_t assign_context; ++ atomic_long_unchecked_t assign_context_failed; ++ atomic_long_unchecked_t free_context; ++ atomic_long_unchecked_t load_user_context; ++ atomic_long_unchecked_t load_kernel_context; ++ atomic_long_unchecked_t lock_kernel_context; ++ atomic_long_unchecked_t unlock_kernel_context; ++ atomic_long_unchecked_t steal_user_context; ++ atomic_long_unchecked_t steal_kernel_context; ++ atomic_long_unchecked_t steal_context_failed; ++ atomic_long_unchecked_t nopfn; ++ atomic_long_unchecked_t asid_new; ++ atomic_long_unchecked_t asid_next; ++ atomic_long_unchecked_t asid_wrap; ++ atomic_long_unchecked_t asid_reuse; ++ atomic_long_unchecked_t intr; ++ atomic_long_unchecked_t intr_cbr; ++ atomic_long_unchecked_t intr_tfh; ++ atomic_long_unchecked_t intr_spurious; ++ atomic_long_unchecked_t intr_mm_lock_failed; ++ atomic_long_unchecked_t call_os; ++ atomic_long_unchecked_t call_os_wait_queue; ++ atomic_long_unchecked_t user_flush_tlb; ++ atomic_long_unchecked_t user_unload_context; ++ atomic_long_unchecked_t user_exception; ++ atomic_long_unchecked_t set_context_option; ++ atomic_long_unchecked_t check_context_retarget_intr; ++ atomic_long_unchecked_t check_context_unload; ++ atomic_long_unchecked_t tlb_dropin; ++ atomic_long_unchecked_t tlb_preload_page; ++ atomic_long_unchecked_t tlb_dropin_fail_no_asid; ++ atomic_long_unchecked_t tlb_dropin_fail_upm; ++ atomic_long_unchecked_t tlb_dropin_fail_invalid; ++ atomic_long_unchecked_t tlb_dropin_fail_range_active; ++ atomic_long_unchecked_t tlb_dropin_fail_idle; ++ atomic_long_unchecked_t tlb_dropin_fail_fmm; ++ atomic_long_unchecked_t tlb_dropin_fail_no_exception; ++ atomic_long_unchecked_t tfh_stale_on_fault; ++ atomic_long_unchecked_t mmu_invalidate_range; ++ atomic_long_unchecked_t mmu_invalidate_page; ++ atomic_long_unchecked_t flush_tlb; ++ atomic_long_unchecked_t flush_tlb_gru; ++ atomic_long_unchecked_t flush_tlb_gru_tgh; ++ atomic_long_unchecked_t flush_tlb_gru_zero_asid; + +- atomic_long_t copy_gpa; +- atomic_long_t read_gpa; ++ atomic_long_unchecked_t copy_gpa; ++ atomic_long_unchecked_t read_gpa; + +- atomic_long_t mesq_receive; +- atomic_long_t mesq_receive_none; +- atomic_long_t mesq_send; +- atomic_long_t mesq_send_failed; +- atomic_long_t mesq_noop; +- atomic_long_t mesq_send_unexpected_error; +- atomic_long_t mesq_send_lb_overflow; +- atomic_long_t mesq_send_qlimit_reached; +- atomic_long_t mesq_send_amo_nacked; +- atomic_long_t mesq_send_put_nacked; +- atomic_long_t mesq_page_overflow; +- atomic_long_t mesq_qf_locked; +- atomic_long_t mesq_qf_noop_not_full; +- atomic_long_t mesq_qf_switch_head_failed; +- atomic_long_t mesq_qf_unexpected_error; +- atomic_long_t mesq_noop_unexpected_error; +- atomic_long_t mesq_noop_lb_overflow; +- atomic_long_t mesq_noop_qlimit_reached; +- atomic_long_t mesq_noop_amo_nacked; +- atomic_long_t mesq_noop_put_nacked; +- atomic_long_t mesq_noop_page_overflow; ++ atomic_long_unchecked_t mesq_receive; ++ atomic_long_unchecked_t mesq_receive_none; ++ atomic_long_unchecked_t mesq_send; ++ atomic_long_unchecked_t mesq_send_failed; ++ atomic_long_unchecked_t mesq_noop; ++ atomic_long_unchecked_t mesq_send_unexpected_error; ++ atomic_long_unchecked_t mesq_send_lb_overflow; ++ atomic_long_unchecked_t mesq_send_qlimit_reached; ++ atomic_long_unchecked_t mesq_send_amo_nacked; ++ atomic_long_unchecked_t mesq_send_put_nacked; ++ atomic_long_unchecked_t mesq_page_overflow; ++ atomic_long_unchecked_t mesq_qf_locked; ++ atomic_long_unchecked_t mesq_qf_noop_not_full; ++ atomic_long_unchecked_t mesq_qf_switch_head_failed; ++ atomic_long_unchecked_t mesq_qf_unexpected_error; ++ atomic_long_unchecked_t mesq_noop_unexpected_error; ++ atomic_long_unchecked_t mesq_noop_lb_overflow; ++ atomic_long_unchecked_t mesq_noop_qlimit_reached; ++ atomic_long_unchecked_t mesq_noop_amo_nacked; ++ atomic_long_unchecked_t mesq_noop_put_nacked; ++ atomic_long_unchecked_t mesq_noop_page_overflow; + + }; + +@@ -251,8 +251,8 @@ enum mcs_op {cchop_allocate, cchop_start, cchop_interrupt, cchop_interrupt_sync, + tghop_invalidate, mcsop_last}; + + struct mcs_op_statistic { +- atomic_long_t count; +- atomic_long_t total; ++ atomic_long_unchecked_t count; ++ atomic_long_unchecked_t total; + unsigned long max; + }; + +@@ -275,7 +275,7 @@ extern struct mcs_op_statistic mcs_op_statistics[mcsop_last]; + + #define STAT(id) do { \ + if (gru_options & OPT_STATS) \ +- atomic_long_inc(&gru_stats.id); \ ++ atomic_long_inc_unchecked(&gru_stats.id); \ + } while (0) + + #ifdef CONFIG_SGI_GRU_DEBUG +diff --git a/drivers/misc/sgi-xp/xp.h b/drivers/misc/sgi-xp/xp.h +index c862cd4..0d176fe 100644 +--- a/drivers/misc/sgi-xp/xp.h ++++ b/drivers/misc/sgi-xp/xp.h +@@ -288,7 +288,7 @@ struct xpc_interface { + xpc_notify_func, void *); + void (*received) (short, int, void *); + enum xp_retval (*partid_to_nasids) (short, void *); +-}; ++} __no_const; + + extern struct xpc_interface xpc_interface; + +diff --git a/drivers/misc/sgi-xp/xpc.h b/drivers/misc/sgi-xp/xpc.h +index b94d5f7..7f494c5 100644 +--- a/drivers/misc/sgi-xp/xpc.h ++++ b/drivers/misc/sgi-xp/xpc.h +@@ -835,6 +835,7 @@ struct xpc_arch_operations { + void (*received_payload) (struct xpc_channel *, void *); + void (*notify_senders_of_disconnect) (struct xpc_channel *); + }; ++typedef struct xpc_arch_operations __no_const xpc_arch_operations_no_const; + + /* struct xpc_partition act_state values (for XPC HB) */ + +@@ -876,7 +877,7 @@ extern struct xpc_registration xpc_registrations[]; + /* found in xpc_main.c */ + extern struct device *xpc_part; + extern struct device *xpc_chan; +-extern struct xpc_arch_operations xpc_arch_ops; ++extern xpc_arch_operations_no_const xpc_arch_ops; + extern int xpc_disengage_timelimit; + extern int xpc_disengage_timedout; + extern int xpc_activate_IRQ_rcvd; +diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c +index 8d082b4..aa749ae 100644 +--- a/drivers/misc/sgi-xp/xpc_main.c ++++ b/drivers/misc/sgi-xp/xpc_main.c +@@ -162,7 +162,7 @@ static struct notifier_block xpc_die_notifier = { + .notifier_call = xpc_system_die, + }; + +-struct xpc_arch_operations xpc_arch_ops; ++xpc_arch_operations_no_const xpc_arch_ops; + + /* + * Timer function to enforce the timelimit on the partition disengage. +diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c +index 69ef0be..f3ef91e 100644 +--- a/drivers/mmc/host/sdhci-pci.c ++++ b/drivers/mmc/host/sdhci-pci.c +@@ -652,7 +652,7 @@ static const struct sdhci_pci_fixes sdhci_via = { + .probe = via_probe, + }; + +-static const struct pci_device_id pci_ids[] __devinitdata = { ++static const struct pci_device_id pci_ids[] __devinitconst = { + { + .vendor = PCI_VENDOR_ID_RICOH, + .device = PCI_DEVICE_ID_RICOH_R5C822, +diff --git a/drivers/mtd/devices/doc2000.c b/drivers/mtd/devices/doc2000.c +index a4eb8b5..8c0628f 100644 +--- a/drivers/mtd/devices/doc2000.c ++++ b/drivers/mtd/devices/doc2000.c +@@ -753,7 +753,7 @@ static int doc_write(struct mtd_info *mtd, loff_t to, size_t len, + + /* The ECC will not be calculated correctly if less than 512 is written */ + /* DBB- +- if (len != 0x200 && eccbuf) ++ if (len != 0x200) + printk(KERN_WARNING + "ECC needs a full sector write (adr: %lx size %lx)\n", + (long) to, (long) len); +diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c +index a9e57d6..c6d8731 100644 +--- a/drivers/mtd/nand/denali.c ++++ b/drivers/mtd/nand/denali.c +@@ -26,6 +26,7 @@ + #include <linux/pci.h> + #include <linux/mtd/mtd.h> + #include <linux/module.h> ++#include <linux/slab.h> + + #include "denali.h" + +diff --git a/drivers/mtd/nftlmount.c b/drivers/mtd/nftlmount.c +index 51b9d6a..52af9a7 100644 +--- a/drivers/mtd/nftlmount.c ++++ b/drivers/mtd/nftlmount.c +@@ -24,6 +24,7 @@ + #include <asm/errno.h> + #include <linux/delay.h> + #include <linux/slab.h> ++#include <linux/sched.h> + #include <linux/mtd/mtd.h> + #include <linux/mtd/nand.h> + #include <linux/mtd/nftl.h> +diff --git a/drivers/net/ethernet/atheros/atlx/atl2.c b/drivers/net/ethernet/atheros/atlx/atl2.c +index 6762dc4..9956862 100644 +--- a/drivers/net/ethernet/atheros/atlx/atl2.c ++++ b/drivers/net/ethernet/atheros/atlx/atl2.c +@@ -2859,7 +2859,7 @@ static void atl2_force_ps(struct atl2_hw *hw) + */ + + #define ATL2_PARAM(X, desc) \ +- static const int __devinitdata X[ATL2_MAX_NIC + 1] = ATL2_PARAM_INIT; \ ++ static const int __devinitconst X[ATL2_MAX_NIC + 1] = ATL2_PARAM_INIT; \ + MODULE_PARM(X, "1-" __MODULE_STRING(ATL2_MAX_NIC) "i"); \ + MODULE_PARM_DESC(X, desc); + #else +diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h +index 61a7670..7da6e34 100644 +--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h ++++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h +@@ -483,7 +483,7 @@ struct bnx2x_rx_mode_obj { + + int (*wait_comp)(struct bnx2x *bp, + struct bnx2x_rx_mode_ramrod_params *p); +-}; ++} __no_const; + + /********************** Set multicast group ***********************************/ + +diff --git a/drivers/net/ethernet/broadcom/tg3.h b/drivers/net/ethernet/broadcom/tg3.h +index 93865f8..5448741 100644 +--- a/drivers/net/ethernet/broadcom/tg3.h ++++ b/drivers/net/ethernet/broadcom/tg3.h +@@ -140,6 +140,7 @@ + #define CHIPREV_ID_5750_A0 0x4000 + #define CHIPREV_ID_5750_A1 0x4001 + #define CHIPREV_ID_5750_A3 0x4003 ++#define CHIPREV_ID_5750_C1 0x4201 + #define CHIPREV_ID_5750_C2 0x4202 + #define CHIPREV_ID_5752_A0_HW 0x5000 + #define CHIPREV_ID_5752_A0 0x6000 +diff --git a/drivers/net/ethernet/chelsio/cxgb3/l2t.h b/drivers/net/ethernet/chelsio/cxgb3/l2t.h +index c4e8643..0979484 100644 +--- a/drivers/net/ethernet/chelsio/cxgb3/l2t.h ++++ b/drivers/net/ethernet/chelsio/cxgb3/l2t.h +@@ -87,7 +87,7 @@ typedef void (*arp_failure_handler_func)(struct t3cdev * dev, + */ + struct l2t_skb_cb { + arp_failure_handler_func arp_failure_handler; +-}; ++} __no_const; + + #define L2T_SKB_CB(skb) ((struct l2t_skb_cb *)(skb)->cb) + +diff --git a/drivers/net/ethernet/dec/tulip/de4x5.c b/drivers/net/ethernet/dec/tulip/de4x5.c +index 18b106c..2b38d36 100644 +--- a/drivers/net/ethernet/dec/tulip/de4x5.c ++++ b/drivers/net/ethernet/dec/tulip/de4x5.c +@@ -5388,7 +5388,7 @@ de4x5_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) + for (i=0; i<ETH_ALEN; i++) { + tmp.addr[i] = dev->dev_addr[i]; + } +- if (copy_to_user(ioc->data, tmp.addr, ioc->len)) return -EFAULT; ++ if (ioc->len > sizeof tmp.addr || copy_to_user(ioc->data, tmp.addr, ioc->len)) return -EFAULT; + break; + + case DE4X5_SET_HWADDR: /* Set the hardware address */ +@@ -5428,7 +5428,7 @@ de4x5_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) + spin_lock_irqsave(&lp->lock, flags); + memcpy(&statbuf, &lp->pktStats, ioc->len); + spin_unlock_irqrestore(&lp->lock, flags); +- if (copy_to_user(ioc->data, &statbuf, ioc->len)) ++ if (ioc->len > sizeof statbuf || copy_to_user(ioc->data, &statbuf, ioc->len)) + return -EFAULT; + break; + } +diff --git a/drivers/net/ethernet/dec/tulip/eeprom.c b/drivers/net/ethernet/dec/tulip/eeprom.c +index ed7d1dc..d426748 100644 +--- a/drivers/net/ethernet/dec/tulip/eeprom.c ++++ b/drivers/net/ethernet/dec/tulip/eeprom.c +@@ -79,7 +79,7 @@ static struct eeprom_fixup eeprom_fixups[] __devinitdata = { + {NULL}}; + + +-static const char *block_name[] __devinitdata = { ++static const char *block_name[] __devinitconst = { + "21140 non-MII", + "21140 MII PHY", + "21142 Serial PHY", +diff --git a/drivers/net/ethernet/dec/tulip/winbond-840.c b/drivers/net/ethernet/dec/tulip/winbond-840.c +index 2ac6fff..2d127d0 100644 +--- a/drivers/net/ethernet/dec/tulip/winbond-840.c ++++ b/drivers/net/ethernet/dec/tulip/winbond-840.c +@@ -236,7 +236,7 @@ struct pci_id_info { + int drv_flags; /* Driver use, intended as capability flags. */ + }; + +-static const struct pci_id_info pci_id_tbl[] __devinitdata = { ++static const struct pci_id_info pci_id_tbl[] __devinitconst = { + { /* Sometime a Level-One switch card. */ + "Winbond W89c840", CanHaveMII | HasBrokenTx | FDXOnNoMII}, + { "Winbond W89c840", CanHaveMII | HasBrokenTx}, +diff --git a/drivers/net/ethernet/dlink/sundance.c b/drivers/net/ethernet/dlink/sundance.c +index d783f4f..97fa1b0 100644 +--- a/drivers/net/ethernet/dlink/sundance.c ++++ b/drivers/net/ethernet/dlink/sundance.c +@@ -218,7 +218,7 @@ enum { + struct pci_id_info { + const char *name; + }; +-static const struct pci_id_info pci_id_tbl[] __devinitdata = { ++static const struct pci_id_info pci_id_tbl[] __devinitconst = { + {"D-Link DFE-550TX FAST Ethernet Adapter"}, + {"D-Link DFE-550FX 100Mbps Fiber-optics Adapter"}, + {"D-Link DFE-580TX 4 port Server Adapter"}, +diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c +index 1bbf6b3..430dcd0 100644 +--- a/drivers/net/ethernet/emulex/benet/be_main.c ++++ b/drivers/net/ethernet/emulex/benet/be_main.c +@@ -403,7 +403,7 @@ static void accumulate_16bit_val(u32 *acc, u16 val) + + if (wrapped) + newacc += 65536; +- ACCESS_ONCE(*acc) = newacc; ++ ACCESS_ONCE_RW(*acc) = newacc; + } + + void be_parse_stats(struct be_adapter *adapter) +diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c +index 16b0704..d2c07d7 100644 +--- a/drivers/net/ethernet/faraday/ftgmac100.c ++++ b/drivers/net/ethernet/faraday/ftgmac100.c +@@ -31,6 +31,8 @@ + #include <linux/netdevice.h> + #include <linux/phy.h> + #include <linux/platform_device.h> ++#include <linux/interrupt.h> ++#include <linux/irqreturn.h> + #include <net/ip.h> + + #include "ftgmac100.h" +diff --git a/drivers/net/ethernet/faraday/ftmac100.c b/drivers/net/ethernet/faraday/ftmac100.c +index 829b109..4ae5f6a 100644 +--- a/drivers/net/ethernet/faraday/ftmac100.c ++++ b/drivers/net/ethernet/faraday/ftmac100.c +@@ -31,6 +31,8 @@ + #include <linux/module.h> + #include <linux/netdevice.h> + #include <linux/platform_device.h> ++#include <linux/interrupt.h> ++#include <linux/irqreturn.h> + + #include "ftmac100.h" + +diff --git a/drivers/net/ethernet/fealnx.c b/drivers/net/ethernet/fealnx.c +index 1637b98..c42f87b 100644 +--- a/drivers/net/ethernet/fealnx.c ++++ b/drivers/net/ethernet/fealnx.c +@@ -150,7 +150,7 @@ struct chip_info { + int flags; + }; + +-static const struct chip_info skel_netdrv_tbl[] __devinitdata = { ++static const struct chip_info skel_netdrv_tbl[] __devinitconst = { + { "100/10M Ethernet PCI Adapter", HAS_MII_XCVR }, + { "100/10M Ethernet PCI Adapter", HAS_CHIP_XCVR }, + { "1000/100/10M Ethernet PCI Adapter", HAS_MII_XCVR }, +diff --git a/drivers/net/ethernet/intel/e1000e/e1000.h b/drivers/net/ethernet/intel/e1000e/e1000.h +index b83897f..b2d970f 100644 +--- a/drivers/net/ethernet/intel/e1000e/e1000.h ++++ b/drivers/net/ethernet/intel/e1000e/e1000.h +@@ -181,7 +181,7 @@ struct e1000_info; + #define E1000_TXDCTL_DMA_BURST_ENABLE \ + (E1000_TXDCTL_GRAN | /* set descriptor granularity */ \ + E1000_TXDCTL_COUNT_DESC | \ +- (5 << 16) | /* wthresh must be +1 more than desired */\ ++ (1 << 16) | /* wthresh must be +1 more than desired */\ + (1 << 8) | /* hthresh */ \ + 0x1f) /* pthresh */ + +diff --git a/drivers/net/ethernet/intel/e1000e/hw.h b/drivers/net/ethernet/intel/e1000e/hw.h +index f82ecf5..7d59ecb 100644 +--- a/drivers/net/ethernet/intel/e1000e/hw.h ++++ b/drivers/net/ethernet/intel/e1000e/hw.h +@@ -784,6 +784,7 @@ struct e1000_mac_operations { + void (*config_collision_dist)(struct e1000_hw *); + s32 (*read_mac_addr)(struct e1000_hw *); + }; ++typedef struct e1000_mac_operations __no_const e1000_mac_operations_no_const; + + /* + * When to use various PHY register access functions: +@@ -824,6 +825,7 @@ struct e1000_phy_operations { + void (*power_up)(struct e1000_hw *); + void (*power_down)(struct e1000_hw *); + }; ++typedef struct e1000_phy_operations __no_const e1000_phy_operations_no_const; + + /* Function pointers for the NVM. */ + struct e1000_nvm_operations { +@@ -836,9 +838,10 @@ struct e1000_nvm_operations { + s32 (*validate)(struct e1000_hw *); + s32 (*write)(struct e1000_hw *, u16, u16, u16 *); + }; ++typedef struct e1000_nvm_operations __no_const e1000_nvm_operations_no_const; + + struct e1000_mac_info { +- struct e1000_mac_operations ops; ++ e1000_mac_operations_no_const ops; + u8 addr[ETH_ALEN]; + u8 perm_addr[ETH_ALEN]; + +@@ -879,7 +882,7 @@ struct e1000_mac_info { + }; + + struct e1000_phy_info { +- struct e1000_phy_operations ops; ++ e1000_phy_operations_no_const ops; + + enum e1000_phy_type type; + +@@ -913,7 +916,7 @@ struct e1000_phy_info { + }; + + struct e1000_nvm_info { +- struct e1000_nvm_operations ops; ++ e1000_nvm_operations_no_const ops; + + enum e1000_nvm_type type; + enum e1000_nvm_override override; +diff --git a/drivers/net/ethernet/intel/igb/e1000_hw.h b/drivers/net/ethernet/intel/igb/e1000_hw.h +index f67cbd3..cef9e3d 100644 +--- a/drivers/net/ethernet/intel/igb/e1000_hw.h ++++ b/drivers/net/ethernet/intel/igb/e1000_hw.h +@@ -314,6 +314,7 @@ struct e1000_mac_operations { + s32 (*read_mac_addr)(struct e1000_hw *); + s32 (*get_speed_and_duplex)(struct e1000_hw *, u16 *, u16 *); + }; ++typedef struct e1000_mac_operations __no_const e1000_mac_operations_no_const; + + struct e1000_phy_operations { + s32 (*acquire)(struct e1000_hw *); +@@ -330,6 +331,7 @@ struct e1000_phy_operations { + s32 (*set_d3_lplu_state)(struct e1000_hw *, bool); + s32 (*write_reg)(struct e1000_hw *, u32, u16); + }; ++typedef struct e1000_phy_operations __no_const e1000_phy_operations_no_const; + + struct e1000_nvm_operations { + s32 (*acquire)(struct e1000_hw *); +@@ -339,6 +341,7 @@ struct e1000_nvm_operations { + s32 (*update)(struct e1000_hw *); + s32 (*validate)(struct e1000_hw *); + }; ++typedef struct e1000_nvm_operations __no_const e1000_nvm_operations_no_const; + + struct e1000_info { + s32 (*get_invariants)(struct e1000_hw *); +@@ -350,7 +353,7 @@ struct e1000_info { + extern const struct e1000_info e1000_82575_info; + + struct e1000_mac_info { +- struct e1000_mac_operations ops; ++ e1000_mac_operations_no_const ops; + + u8 addr[6]; + u8 perm_addr[6]; +@@ -388,7 +391,7 @@ struct e1000_mac_info { + }; + + struct e1000_phy_info { +- struct e1000_phy_operations ops; ++ e1000_phy_operations_no_const ops; + + enum e1000_phy_type type; + +@@ -423,7 +426,7 @@ struct e1000_phy_info { + }; + + struct e1000_nvm_info { +- struct e1000_nvm_operations ops; ++ e1000_nvm_operations_no_const ops; + enum e1000_nvm_type type; + enum e1000_nvm_override override; + +@@ -468,6 +471,7 @@ struct e1000_mbx_operations { + s32 (*check_for_ack)(struct e1000_hw *, u16); + s32 (*check_for_rst)(struct e1000_hw *, u16); + }; ++typedef struct e1000_mbx_operations __no_const e1000_mbx_operations_no_const; + + struct e1000_mbx_stats { + u32 msgs_tx; +@@ -479,7 +483,7 @@ struct e1000_mbx_stats { + }; + + struct e1000_mbx_info { +- struct e1000_mbx_operations ops; ++ e1000_mbx_operations_no_const ops; + struct e1000_mbx_stats stats; + u32 timeout; + u32 usec_delay; +diff --git a/drivers/net/ethernet/intel/igbvf/vf.h b/drivers/net/ethernet/intel/igbvf/vf.h +index 57db3c6..aa825fc 100644 +--- a/drivers/net/ethernet/intel/igbvf/vf.h ++++ b/drivers/net/ethernet/intel/igbvf/vf.h +@@ -189,9 +189,10 @@ struct e1000_mac_operations { + s32 (*read_mac_addr)(struct e1000_hw *); + s32 (*set_vfta)(struct e1000_hw *, u16, bool); + }; ++typedef struct e1000_mac_operations __no_const e1000_mac_operations_no_const; + + struct e1000_mac_info { +- struct e1000_mac_operations ops; ++ e1000_mac_operations_no_const ops; + u8 addr[6]; + u8 perm_addr[6]; + +@@ -213,6 +214,7 @@ struct e1000_mbx_operations { + s32 (*check_for_ack)(struct e1000_hw *); + s32 (*check_for_rst)(struct e1000_hw *); + }; ++typedef struct e1000_mbx_operations __no_const e1000_mbx_operations_no_const; + + struct e1000_mbx_stats { + u32 msgs_tx; +@@ -224,7 +226,7 @@ struct e1000_mbx_stats { + }; + + struct e1000_mbx_info { +- struct e1000_mbx_operations ops; ++ e1000_mbx_operations_no_const ops; + struct e1000_mbx_stats stats; + u32 timeout; + u32 usec_delay; +diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h +index 8636e83..ab9bbc3 100644 +--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h ++++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h +@@ -2710,6 +2710,7 @@ struct ixgbe_eeprom_operations { + s32 (*update_checksum)(struct ixgbe_hw *); + u16 (*calc_checksum)(struct ixgbe_hw *); + }; ++typedef struct ixgbe_eeprom_operations __no_const ixgbe_eeprom_operations_no_const; + + struct ixgbe_mac_operations { + s32 (*init_hw)(struct ixgbe_hw *); +@@ -2773,6 +2774,7 @@ struct ixgbe_mac_operations { + /* Manageability interface */ + s32 (*set_fw_drv_ver)(struct ixgbe_hw *, u8, u8, u8, u8); + }; ++typedef struct ixgbe_mac_operations __no_const ixgbe_mac_operations_no_const; + + struct ixgbe_phy_operations { + s32 (*identify)(struct ixgbe_hw *); +@@ -2792,9 +2794,10 @@ struct ixgbe_phy_operations { + s32 (*write_i2c_eeprom)(struct ixgbe_hw *, u8, u8); + s32 (*check_overtemp)(struct ixgbe_hw *); + }; ++typedef struct ixgbe_phy_operations __no_const ixgbe_phy_operations_no_const; + + struct ixgbe_eeprom_info { +- struct ixgbe_eeprom_operations ops; ++ ixgbe_eeprom_operations_no_const ops; + enum ixgbe_eeprom_type type; + u32 semaphore_delay; + u16 word_size; +@@ -2804,7 +2807,7 @@ struct ixgbe_eeprom_info { + + #define IXGBE_FLAGS_DOUBLE_RESET_REQUIRED 0x01 + struct ixgbe_mac_info { +- struct ixgbe_mac_operations ops; ++ ixgbe_mac_operations_no_const ops; + enum ixgbe_mac_type type; + u8 addr[ETH_ALEN]; + u8 perm_addr[ETH_ALEN]; +@@ -2832,7 +2835,7 @@ struct ixgbe_mac_info { + }; + + struct ixgbe_phy_info { +- struct ixgbe_phy_operations ops; ++ ixgbe_phy_operations_no_const ops; + struct mdio_if_info mdio; + enum ixgbe_phy_type type; + u32 id; +@@ -2860,6 +2863,7 @@ struct ixgbe_mbx_operations { + s32 (*check_for_ack)(struct ixgbe_hw *, u16); + s32 (*check_for_rst)(struct ixgbe_hw *, u16); + }; ++typedef struct ixgbe_mbx_operations __no_const ixgbe_mbx_operations_no_const; + + struct ixgbe_mbx_stats { + u32 msgs_tx; +@@ -2871,7 +2875,7 @@ struct ixgbe_mbx_stats { + }; + + struct ixgbe_mbx_info { +- struct ixgbe_mbx_operations ops; ++ ixgbe_mbx_operations_no_const ops; + struct ixgbe_mbx_stats stats; + u32 timeout; + u32 usec_delay; +diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.h b/drivers/net/ethernet/intel/ixgbevf/vf.h +index 25c951d..cc7cf33 100644 +--- a/drivers/net/ethernet/intel/ixgbevf/vf.h ++++ b/drivers/net/ethernet/intel/ixgbevf/vf.h +@@ -70,6 +70,7 @@ struct ixgbe_mac_operations { + s32 (*clear_vfta)(struct ixgbe_hw *); + s32 (*set_vfta)(struct ixgbe_hw *, u32, u32, bool); + }; ++typedef struct ixgbe_mac_operations __no_const ixgbe_mac_operations_no_const; + + enum ixgbe_mac_type { + ixgbe_mac_unknown = 0, +@@ -79,7 +80,7 @@ enum ixgbe_mac_type { + }; + + struct ixgbe_mac_info { +- struct ixgbe_mac_operations ops; ++ ixgbe_mac_operations_no_const ops; + u8 addr[6]; + u8 perm_addr[6]; + +@@ -103,6 +104,7 @@ struct ixgbe_mbx_operations { + s32 (*check_for_ack)(struct ixgbe_hw *); + s32 (*check_for_rst)(struct ixgbe_hw *); + }; ++typedef struct ixgbe_mbx_operations __no_const ixgbe_mbx_operations_no_const; + + struct ixgbe_mbx_stats { + u32 msgs_tx; +@@ -114,7 +116,7 @@ struct ixgbe_mbx_stats { + }; + + struct ixgbe_mbx_info { +- struct ixgbe_mbx_operations ops; ++ ixgbe_mbx_operations_no_const ops; + struct ixgbe_mbx_stats stats; + u32 timeout; + u32 udelay; +diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c +index 8bb05b4..074796f 100644 +--- a/drivers/net/ethernet/mellanox/mlx4/main.c ++++ b/drivers/net/ethernet/mellanox/mlx4/main.c +@@ -41,6 +41,7 @@ + #include <linux/slab.h> + #include <linux/io-mapping.h> + #include <linux/delay.h> ++#include <linux/sched.h> + + #include <linux/mlx4/device.h> + #include <linux/mlx4/doorbell.h> +diff --git a/drivers/net/ethernet/neterion/vxge/vxge-config.h b/drivers/net/ethernet/neterion/vxge/vxge-config.h +index 5046a64..71ca936 100644 +--- a/drivers/net/ethernet/neterion/vxge/vxge-config.h ++++ b/drivers/net/ethernet/neterion/vxge/vxge-config.h +@@ -514,7 +514,7 @@ struct vxge_hw_uld_cbs { + void (*link_down)(struct __vxge_hw_device *devh); + void (*crit_err)(struct __vxge_hw_device *devh, + enum vxge_hw_event type, u64 ext_data); +-}; ++} __no_const; + + /* + * struct __vxge_hw_blockpool_entry - Block private data structure +diff --git a/drivers/net/ethernet/neterion/vxge/vxge-traffic.h b/drivers/net/ethernet/neterion/vxge/vxge-traffic.h +index 4a518a3..936b334 100644 +--- a/drivers/net/ethernet/neterion/vxge/vxge-traffic.h ++++ b/drivers/net/ethernet/neterion/vxge/vxge-traffic.h +@@ -2088,7 +2088,7 @@ struct vxge_hw_mempool_cbs { + struct vxge_hw_mempool_dma *dma_object, + u32 index, + u32 is_last); +-}; ++} __no_const; + + #define VXGE_HW_VIRTUAL_PATH_HANDLE(vpath) \ + ((struct __vxge_hw_vpath_handle *)(vpath)->vpath_handles.next) +diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c +index 161e045..0bb5b86 100644 +--- a/drivers/net/ethernet/realtek/r8169.c ++++ b/drivers/net/ethernet/realtek/r8169.c +@@ -708,17 +708,17 @@ struct rtl8169_private { + struct mdio_ops { + void (*write)(void __iomem *, int, int); + int (*read)(void __iomem *, int); +- } mdio_ops; ++ } __no_const mdio_ops; + + struct pll_power_ops { + void (*down)(struct rtl8169_private *); + void (*up)(struct rtl8169_private *); +- } pll_power_ops; ++ } __no_const pll_power_ops; + + struct jumbo_ops { + void (*enable)(struct rtl8169_private *); + void (*disable)(struct rtl8169_private *); +- } jumbo_ops; ++ } __no_const jumbo_ops; + + int (*set_speed)(struct net_device *, u8 aneg, u16 sp, u8 dpx, u32 adv); + int (*get_settings)(struct net_device *, struct ethtool_cmd *); +diff --git a/drivers/net/ethernet/sis/sis190.c b/drivers/net/ethernet/sis/sis190.c +index a9deda8..5507c31 100644 +--- a/drivers/net/ethernet/sis/sis190.c ++++ b/drivers/net/ethernet/sis/sis190.c +@@ -1620,7 +1620,7 @@ static int __devinit sis190_get_mac_addr_from_eeprom(struct pci_dev *pdev, + static int __devinit sis190_get_mac_addr_from_apc(struct pci_dev *pdev, + struct net_device *dev) + { +- static const u16 __devinitdata ids[] = { 0x0965, 0x0966, 0x0968 }; ++ static const u16 __devinitconst ids[] = { 0x0965, 0x0966, 0x0968 }; + struct sis190_private *tp = netdev_priv(dev); + struct pci_dev *isa_bridge; + u8 reg, tmp8; +diff --git a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c +index c07cfe9..81cbf7e 100644 +--- a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c ++++ b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c +@@ -140,8 +140,8 @@ void dwmac_mmc_ctrl(void __iomem *ioaddr, unsigned int mode) + + writel(value, ioaddr + MMC_CNTRL); + +- pr_debug("stmmac: MMC ctrl register (offset 0x%x): 0x%08x\n", +- MMC_CNTRL, value); ++// pr_debug("stmmac: MMC ctrl register (offset 0x%x): 0x%08x\n", ++// MMC_CNTRL, value); + } + + /* To mask all all interrupts.*/ +diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +index 48d56da..a27e46c 100644 +--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c ++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +@@ -1584,7 +1584,7 @@ static const struct file_operations stmmac_rings_status_fops = { + .open = stmmac_sysfs_ring_open, + .read = seq_read, + .llseek = seq_lseek, +- .release = seq_release, ++ .release = single_release, + }; + + static int stmmac_sysfs_dma_cap_read(struct seq_file *seq, void *v) +@@ -1656,7 +1656,7 @@ static const struct file_operations stmmac_dma_cap_fops = { + .open = stmmac_sysfs_dma_cap_open, + .read = seq_read, + .llseek = seq_lseek, +- .release = seq_release, ++ .release = single_release, + }; + + static int stmmac_init_fs(struct net_device *dev) +diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h +index c358245..8c1de63 100644 +--- a/drivers/net/hyperv/hyperv_net.h ++++ b/drivers/net/hyperv/hyperv_net.h +@@ -98,7 +98,7 @@ struct rndis_device { + + enum rndis_device_state state; + bool link_state; +- atomic_t new_req_id; ++ atomic_unchecked_t new_req_id; + + spinlock_t request_lock; + struct list_head req_list; +diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c +index d6be64b..5d97e3b 100644 +--- a/drivers/net/hyperv/rndis_filter.c ++++ b/drivers/net/hyperv/rndis_filter.c +@@ -97,7 +97,7 @@ static struct rndis_request *get_rndis_request(struct rndis_device *dev, + * template + */ + set = &rndis_msg->msg.set_req; +- set->req_id = atomic_inc_return(&dev->new_req_id); ++ set->req_id = atomic_inc_return_unchecked(&dev->new_req_id); + + /* Add to the request list */ + spin_lock_irqsave(&dev->request_lock, flags); +@@ -648,7 +648,7 @@ static void rndis_filter_halt_device(struct rndis_device *dev) + + /* Setup the rndis set */ + halt = &request->request_msg.msg.halt_req; +- halt->req_id = atomic_inc_return(&dev->new_req_id); ++ halt->req_id = atomic_inc_return_unchecked(&dev->new_req_id); + + /* Ignore return since this msg is optional. */ + rndis_filter_send_request(dev, request); +diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c +index 21d7151..8034208 100644 +--- a/drivers/net/ppp/ppp_generic.c ++++ b/drivers/net/ppp/ppp_generic.c +@@ -986,7 +986,6 @@ ppp_net_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) + void __user *addr = (void __user *) ifr->ifr_ifru.ifru_data; + struct ppp_stats stats; + struct ppp_comp_stats cstats; +- char *vers; + + switch (cmd) { + case SIOCGPPPSTATS: +@@ -1008,8 +1007,7 @@ ppp_net_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) + break; + + case SIOCGPPPVER: +- vers = PPP_VERSION; +- if (copy_to_user(addr, vers, strlen(vers) + 1)) ++ if (copy_to_user(addr, PPP_VERSION, sizeof(PPP_VERSION))) + break; + err = 0; + break; +diff --git a/drivers/net/tokenring/abyss.c b/drivers/net/tokenring/abyss.c +index b715e6b..6d2490f 100644 +--- a/drivers/net/tokenring/abyss.c ++++ b/drivers/net/tokenring/abyss.c +@@ -450,10 +450,12 @@ static struct pci_driver abyss_driver = { + + static int __init abyss_init (void) + { +- abyss_netdev_ops = tms380tr_netdev_ops; ++ pax_open_kernel(); ++ memcpy((void *)&abyss_netdev_ops, &tms380tr_netdev_ops, sizeof(tms380tr_netdev_ops)); + +- abyss_netdev_ops.ndo_open = abyss_open; +- abyss_netdev_ops.ndo_stop = abyss_close; ++ *(void **)&abyss_netdev_ops.ndo_open = abyss_open; ++ *(void **)&abyss_netdev_ops.ndo_stop = abyss_close; ++ pax_close_kernel(); + + return pci_register_driver(&abyss_driver); + } +diff --git a/drivers/net/tokenring/madgemc.c b/drivers/net/tokenring/madgemc.c +index 28adcdf..ae82f35 100644 +--- a/drivers/net/tokenring/madgemc.c ++++ b/drivers/net/tokenring/madgemc.c +@@ -742,9 +742,11 @@ static struct mca_driver madgemc_driver = { + + static int __init madgemc_init (void) + { +- madgemc_netdev_ops = tms380tr_netdev_ops; +- madgemc_netdev_ops.ndo_open = madgemc_open; +- madgemc_netdev_ops.ndo_stop = madgemc_close; ++ pax_open_kernel(); ++ memcpy((void *)&madgemc_netdev_ops, &tms380tr_netdev_ops, sizeof(tms380tr_netdev_ops)); ++ *(void **)&madgemc_netdev_ops.ndo_open = madgemc_open; ++ *(void **)&madgemc_netdev_ops.ndo_stop = madgemc_close; ++ pax_close_kernel(); + + return mca_register_driver (&madgemc_driver); + } +diff --git a/drivers/net/tokenring/proteon.c b/drivers/net/tokenring/proteon.c +index 62d90e4..9d84237 100644 +--- a/drivers/net/tokenring/proteon.c ++++ b/drivers/net/tokenring/proteon.c +@@ -352,9 +352,11 @@ static int __init proteon_init(void) + struct platform_device *pdev; + int i, num = 0, err = 0; + +- proteon_netdev_ops = tms380tr_netdev_ops; +- proteon_netdev_ops.ndo_open = proteon_open; +- proteon_netdev_ops.ndo_stop = tms380tr_close; ++ pax_open_kernel(); ++ memcpy((void *)&proteon_netdev_ops, &tms380tr_netdev_ops, sizeof(tms380tr_netdev_ops)); ++ *(void **)&proteon_netdev_ops.ndo_open = proteon_open; ++ *(void **)&proteon_netdev_ops.ndo_stop = tms380tr_close; ++ pax_close_kernel(); + + err = platform_driver_register(&proteon_driver); + if (err) +diff --git a/drivers/net/tokenring/skisa.c b/drivers/net/tokenring/skisa.c +index ee11e93..c8f19c7 100644 +--- a/drivers/net/tokenring/skisa.c ++++ b/drivers/net/tokenring/skisa.c +@@ -362,9 +362,11 @@ static int __init sk_isa_init(void) + struct platform_device *pdev; + int i, num = 0, err = 0; + +- sk_isa_netdev_ops = tms380tr_netdev_ops; +- sk_isa_netdev_ops.ndo_open = sk_isa_open; +- sk_isa_netdev_ops.ndo_stop = tms380tr_close; ++ pax_open_kernel(); ++ memcpy((void *)&sk_isa_netdev_ops, &tms380tr_netdev_ops, sizeof(tms380tr_netdev_ops)); ++ *(void **)&sk_isa_netdev_ops.ndo_open = sk_isa_open; ++ *(void **)&sk_isa_netdev_ops.ndo_stop = tms380tr_close; ++ pax_close_kernel(); + + err = platform_driver_register(&sk_isa_driver); + if (err) +diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c +index 2d2a688..35f2372 100644 +--- a/drivers/net/usb/hso.c ++++ b/drivers/net/usb/hso.c +@@ -71,7 +71,7 @@ + #include <asm/byteorder.h> + #include <linux/serial_core.h> + #include <linux/serial.h> +- ++#include <asm/local.h> + + #define MOD_AUTHOR "Option Wireless" + #define MOD_DESCRIPTION "USB High Speed Option driver" +@@ -257,7 +257,7 @@ struct hso_serial { + + /* from usb_serial_port */ + struct tty_struct *tty; +- int open_count; ++ local_t open_count; + spinlock_t serial_lock; + + int (*write_data) (struct hso_serial *serial); +@@ -1190,7 +1190,7 @@ static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial) + struct urb *urb; + + urb = serial->rx_urb[0]; +- if (serial->open_count > 0) { ++ if (local_read(&serial->open_count) > 0) { + count = put_rxbuf_data(urb, serial); + if (count == -1) + return; +@@ -1226,7 +1226,7 @@ static void hso_std_serial_read_bulk_callback(struct urb *urb) + DUMP1(urb->transfer_buffer, urb->actual_length); + + /* Anyone listening? */ +- if (serial->open_count == 0) ++ if (local_read(&serial->open_count) == 0) + return; + + if (status == 0) { +@@ -1311,8 +1311,7 @@ static int hso_serial_open(struct tty_struct *tty, struct file *filp) + spin_unlock_irq(&serial->serial_lock); + + /* check for port already opened, if not set the termios */ +- serial->open_count++; +- if (serial->open_count == 1) { ++ if (local_inc_return(&serial->open_count) == 1) { + serial->rx_state = RX_IDLE; + /* Force default termio settings */ + _hso_serial_set_termios(tty, NULL); +@@ -1324,7 +1323,7 @@ static int hso_serial_open(struct tty_struct *tty, struct file *filp) + result = hso_start_serial_device(serial->parent, GFP_KERNEL); + if (result) { + hso_stop_serial_device(serial->parent); +- serial->open_count--; ++ local_dec(&serial->open_count); + kref_put(&serial->parent->ref, hso_serial_ref_free); + } + } else { +@@ -1361,10 +1360,10 @@ static void hso_serial_close(struct tty_struct *tty, struct file *filp) + + /* reset the rts and dtr */ + /* do the actual close */ +- serial->open_count--; ++ local_dec(&serial->open_count); + +- if (serial->open_count <= 0) { +- serial->open_count = 0; ++ if (local_read(&serial->open_count) <= 0) { ++ local_set(&serial->open_count, 0); + spin_lock_irq(&serial->serial_lock); + if (serial->tty == tty) { + serial->tty->driver_data = NULL; +@@ -1446,7 +1445,7 @@ static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old) + + /* the actual setup */ + spin_lock_irqsave(&serial->serial_lock, flags); +- if (serial->open_count) ++ if (local_read(&serial->open_count)) + _hso_serial_set_termios(tty, old); + else + tty->termios = old; +@@ -1905,7 +1904,7 @@ static void intr_callback(struct urb *urb) + D1("Pending read interrupt on port %d\n", i); + spin_lock(&serial->serial_lock); + if (serial->rx_state == RX_IDLE && +- serial->open_count > 0) { ++ local_read(&serial->open_count) > 0) { + /* Setup and send a ctrl req read on + * port i */ + if (!serial->rx_urb_filled[0]) { +@@ -3098,7 +3097,7 @@ static int hso_resume(struct usb_interface *iface) + /* Start all serial ports */ + for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { + if (serial_table[i] && (serial_table[i]->interface == iface)) { +- if (dev2ser(serial_table[i])->open_count) { ++ if (local_read(&dev2ser(serial_table[i])->open_count)) { + result = + hso_start_serial_device(serial_table[i], GFP_NOIO); + hso_kick_transmit(dev2ser(serial_table[i])); +diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h +index 420d69b..74f90a2 100644 +--- a/drivers/net/wireless/ath/ath.h ++++ b/drivers/net/wireless/ath/ath.h +@@ -119,6 +119,7 @@ struct ath_ops { + void (*write_flush) (void *); + u32 (*rmw)(void *, u32 reg_offset, u32 set, u32 clr); + }; ++typedef struct ath_ops __no_const ath_ops_no_const; + + struct ath_common; + struct ath_bus_ops; +diff --git a/drivers/net/wireless/ath/ath9k/ar9002_mac.c b/drivers/net/wireless/ath/ath9k/ar9002_mac.c +index aa2abaf..5f5152d 100644 +--- a/drivers/net/wireless/ath/ath9k/ar9002_mac.c ++++ b/drivers/net/wireless/ath/ath9k/ar9002_mac.c +@@ -183,8 +183,8 @@ ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i) + ads->ds_txstatus6 = ads->ds_txstatus7 = 0; + ads->ds_txstatus8 = ads->ds_txstatus9 = 0; + +- ACCESS_ONCE(ads->ds_link) = i->link; +- ACCESS_ONCE(ads->ds_data) = i->buf_addr[0]; ++ ACCESS_ONCE_RW(ads->ds_link) = i->link; ++ ACCESS_ONCE_RW(ads->ds_data) = i->buf_addr[0]; + + ctl1 = i->buf_len[0] | (i->is_last ? 0 : AR_TxMore); + ctl6 = SM(i->keytype, AR_EncrType); +@@ -198,26 +198,26 @@ ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i) + + if ((i->is_first || i->is_last) && + i->aggr != AGGR_BUF_MIDDLE && i->aggr != AGGR_BUF_LAST) { +- ACCESS_ONCE(ads->ds_ctl2) = set11nTries(i->rates, 0) ++ ACCESS_ONCE_RW(ads->ds_ctl2) = set11nTries(i->rates, 0) + | set11nTries(i->rates, 1) + | set11nTries(i->rates, 2) + | set11nTries(i->rates, 3) + | (i->dur_update ? AR_DurUpdateEna : 0) + | SM(0, AR_BurstDur); + +- ACCESS_ONCE(ads->ds_ctl3) = set11nRate(i->rates, 0) ++ ACCESS_ONCE_RW(ads->ds_ctl3) = set11nRate(i->rates, 0) + | set11nRate(i->rates, 1) + | set11nRate(i->rates, 2) + | set11nRate(i->rates, 3); + } else { +- ACCESS_ONCE(ads->ds_ctl2) = 0; +- ACCESS_ONCE(ads->ds_ctl3) = 0; ++ ACCESS_ONCE_RW(ads->ds_ctl2) = 0; ++ ACCESS_ONCE_RW(ads->ds_ctl3) = 0; + } + + if (!i->is_first) { +- ACCESS_ONCE(ads->ds_ctl0) = 0; +- ACCESS_ONCE(ads->ds_ctl1) = ctl1; +- ACCESS_ONCE(ads->ds_ctl6) = ctl6; ++ ACCESS_ONCE_RW(ads->ds_ctl0) = 0; ++ ACCESS_ONCE_RW(ads->ds_ctl1) = ctl1; ++ ACCESS_ONCE_RW(ads->ds_ctl6) = ctl6; + return; + } + +@@ -242,7 +242,7 @@ ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i) + break; + } + +- ACCESS_ONCE(ads->ds_ctl0) = (i->pkt_len & AR_FrameLen) ++ ACCESS_ONCE_RW(ads->ds_ctl0) = (i->pkt_len & AR_FrameLen) + | (i->flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0) + | SM(i->txpower, AR_XmitPower) + | (i->flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0) +@@ -252,19 +252,19 @@ ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i) + | (i->flags & ATH9K_TXDESC_RTSENA ? AR_RTSEnable : + (i->flags & ATH9K_TXDESC_CTSENA ? AR_CTSEnable : 0)); + +- ACCESS_ONCE(ads->ds_ctl1) = ctl1; +- ACCESS_ONCE(ads->ds_ctl6) = ctl6; ++ ACCESS_ONCE_RW(ads->ds_ctl1) = ctl1; ++ ACCESS_ONCE_RW(ads->ds_ctl6) = ctl6; + + if (i->aggr == AGGR_BUF_MIDDLE || i->aggr == AGGR_BUF_LAST) + return; + +- ACCESS_ONCE(ads->ds_ctl4) = set11nPktDurRTSCTS(i->rates, 0) ++ ACCESS_ONCE_RW(ads->ds_ctl4) = set11nPktDurRTSCTS(i->rates, 0) + | set11nPktDurRTSCTS(i->rates, 1); + +- ACCESS_ONCE(ads->ds_ctl5) = set11nPktDurRTSCTS(i->rates, 2) ++ ACCESS_ONCE_RW(ads->ds_ctl5) = set11nPktDurRTSCTS(i->rates, 2) + | set11nPktDurRTSCTS(i->rates, 3); + +- ACCESS_ONCE(ads->ds_ctl7) = set11nRateFlags(i->rates, 0) ++ ACCESS_ONCE_RW(ads->ds_ctl7) = set11nRateFlags(i->rates, 0) + | set11nRateFlags(i->rates, 1) + | set11nRateFlags(i->rates, 2) + | set11nRateFlags(i->rates, 3) +diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c +index a66a13b..0ef399e 100644 +--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c ++++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c +@@ -39,47 +39,47 @@ ar9003_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i) + (i->qcu << AR_TxQcuNum_S) | desc_len; + + checksum += val; +- ACCESS_ONCE(ads->info) = val; ++ ACCESS_ONCE_RW(ads->info) = val; + + checksum += i->link; +- ACCESS_ONCE(ads->link) = i->link; ++ ACCESS_ONCE_RW(ads->link) = i->link; + + checksum += i->buf_addr[0]; +- ACCESS_ONCE(ads->data0) = i->buf_addr[0]; ++ ACCESS_ONCE_RW(ads->data0) = i->buf_addr[0]; + checksum += i->buf_addr[1]; +- ACCESS_ONCE(ads->data1) = i->buf_addr[1]; ++ ACCESS_ONCE_RW(ads->data1) = i->buf_addr[1]; + checksum += i->buf_addr[2]; +- ACCESS_ONCE(ads->data2) = i->buf_addr[2]; ++ ACCESS_ONCE_RW(ads->data2) = i->buf_addr[2]; + checksum += i->buf_addr[3]; +- ACCESS_ONCE(ads->data3) = i->buf_addr[3]; ++ ACCESS_ONCE_RW(ads->data3) = i->buf_addr[3]; + + checksum += (val = (i->buf_len[0] << AR_BufLen_S) & AR_BufLen); +- ACCESS_ONCE(ads->ctl3) = val; ++ ACCESS_ONCE_RW(ads->ctl3) = val; + checksum += (val = (i->buf_len[1] << AR_BufLen_S) & AR_BufLen); +- ACCESS_ONCE(ads->ctl5) = val; ++ ACCESS_ONCE_RW(ads->ctl5) = val; + checksum += (val = (i->buf_len[2] << AR_BufLen_S) & AR_BufLen); +- ACCESS_ONCE(ads->ctl7) = val; ++ ACCESS_ONCE_RW(ads->ctl7) = val; + checksum += (val = (i->buf_len[3] << AR_BufLen_S) & AR_BufLen); +- ACCESS_ONCE(ads->ctl9) = val; ++ ACCESS_ONCE_RW(ads->ctl9) = val; + + checksum = (u16) (((checksum & 0xffff) + (checksum >> 16)) & 0xffff); +- ACCESS_ONCE(ads->ctl10) = checksum; ++ ACCESS_ONCE_RW(ads->ctl10) = checksum; + + if (i->is_first || i->is_last) { +- ACCESS_ONCE(ads->ctl13) = set11nTries(i->rates, 0) ++ ACCESS_ONCE_RW(ads->ctl13) = set11nTries(i->rates, 0) + | set11nTries(i->rates, 1) + | set11nTries(i->rates, 2) + | set11nTries(i->rates, 3) + | (i->dur_update ? AR_DurUpdateEna : 0) + | SM(0, AR_BurstDur); + +- ACCESS_ONCE(ads->ctl14) = set11nRate(i->rates, 0) ++ ACCESS_ONCE_RW(ads->ctl14) = set11nRate(i->rates, 0) + | set11nRate(i->rates, 1) + | set11nRate(i->rates, 2) + | set11nRate(i->rates, 3); + } else { +- ACCESS_ONCE(ads->ctl13) = 0; +- ACCESS_ONCE(ads->ctl14) = 0; ++ ACCESS_ONCE_RW(ads->ctl13) = 0; ++ ACCESS_ONCE_RW(ads->ctl14) = 0; + } + + ads->ctl20 = 0; +@@ -89,17 +89,17 @@ ar9003_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i) + + ctl17 = SM(i->keytype, AR_EncrType); + if (!i->is_first) { +- ACCESS_ONCE(ads->ctl11) = 0; +- ACCESS_ONCE(ads->ctl12) = i->is_last ? 0 : AR_TxMore; +- ACCESS_ONCE(ads->ctl15) = 0; +- ACCESS_ONCE(ads->ctl16) = 0; +- ACCESS_ONCE(ads->ctl17) = ctl17; +- ACCESS_ONCE(ads->ctl18) = 0; +- ACCESS_ONCE(ads->ctl19) = 0; ++ ACCESS_ONCE_RW(ads->ctl11) = 0; ++ ACCESS_ONCE_RW(ads->ctl12) = i->is_last ? 0 : AR_TxMore; ++ ACCESS_ONCE_RW(ads->ctl15) = 0; ++ ACCESS_ONCE_RW(ads->ctl16) = 0; ++ ACCESS_ONCE_RW(ads->ctl17) = ctl17; ++ ACCESS_ONCE_RW(ads->ctl18) = 0; ++ ACCESS_ONCE_RW(ads->ctl19) = 0; + return; + } + +- ACCESS_ONCE(ads->ctl11) = (i->pkt_len & AR_FrameLen) ++ ACCESS_ONCE_RW(ads->ctl11) = (i->pkt_len & AR_FrameLen) + | (i->flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0) + | SM(i->txpower, AR_XmitPower) + | (i->flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0) +@@ -135,22 +135,22 @@ ar9003_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i) + val = (i->flags & ATH9K_TXDESC_PAPRD) >> ATH9K_TXDESC_PAPRD_S; + ctl12 |= SM(val, AR_PAPRDChainMask); + +- ACCESS_ONCE(ads->ctl12) = ctl12; +- ACCESS_ONCE(ads->ctl17) = ctl17; ++ ACCESS_ONCE_RW(ads->ctl12) = ctl12; ++ ACCESS_ONCE_RW(ads->ctl17) = ctl17; + +- ACCESS_ONCE(ads->ctl15) = set11nPktDurRTSCTS(i->rates, 0) ++ ACCESS_ONCE_RW(ads->ctl15) = set11nPktDurRTSCTS(i->rates, 0) + | set11nPktDurRTSCTS(i->rates, 1); + +- ACCESS_ONCE(ads->ctl16) = set11nPktDurRTSCTS(i->rates, 2) ++ ACCESS_ONCE_RW(ads->ctl16) = set11nPktDurRTSCTS(i->rates, 2) + | set11nPktDurRTSCTS(i->rates, 3); + +- ACCESS_ONCE(ads->ctl18) = set11nRateFlags(i->rates, 0) ++ ACCESS_ONCE_RW(ads->ctl18) = set11nRateFlags(i->rates, 0) + | set11nRateFlags(i->rates, 1) + | set11nRateFlags(i->rates, 2) + | set11nRateFlags(i->rates, 3) + | SM(i->rtscts_rate, AR_RTSCTSRate); + +- ACCESS_ONCE(ads->ctl19) = AR_Not_Sounding; ++ ACCESS_ONCE_RW(ads->ctl19) = AR_Not_Sounding; + } + + static u16 ar9003_calc_ptr_chksum(struct ar9003_txc *ads) +diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h +index e88f182..4e57f5d 100644 +--- a/drivers/net/wireless/ath/ath9k/hw.h ++++ b/drivers/net/wireless/ath/ath9k/hw.h +@@ -614,7 +614,7 @@ struct ath_hw_private_ops { + + /* ANI */ + void (*ani_cache_ini_regs)(struct ath_hw *ah); +-}; ++} __no_const; + + /** + * struct ath_hw_ops - callbacks used by hardware code and driver code +@@ -644,7 +644,7 @@ struct ath_hw_ops { + void (*antdiv_comb_conf_set)(struct ath_hw *ah, + struct ath_hw_antcomb_conf *antconf); + +-}; ++} __no_const; + + struct ath_nf_limits { + s16 max; +@@ -664,7 +664,7 @@ enum ath_cal_list { + #define AH_FASTCC 0x4 + + struct ath_hw { +- struct ath_ops reg_ops; ++ ath_ops_no_const reg_ops; + + struct ieee80211_hw *hw; + struct ath_common common; +diff --git a/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_int.h b/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_int.h +index af00e2c..ab04d34 100644 +--- a/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_int.h ++++ b/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_int.h +@@ -545,7 +545,7 @@ struct phy_func_ptr { + void (*carrsuppr)(struct brcms_phy *); + s32 (*rxsigpwr)(struct brcms_phy *, s32); + void (*detach)(struct brcms_phy *); +-}; ++} __no_const; + + struct brcms_phy { + struct brcms_phy_pub pubpi_ro; +diff --git a/drivers/net/wireless/iwlegacy/3945-mac.c b/drivers/net/wireless/iwlegacy/3945-mac.c +index faec404..a5277f1 100644 +--- a/drivers/net/wireless/iwlegacy/3945-mac.c ++++ b/drivers/net/wireless/iwlegacy/3945-mac.c +@@ -3611,7 +3611,9 @@ il3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) + */ + if (il3945_mod_params.disable_hw_scan) { + D_INFO("Disabling hw_scan\n"); +- il3945_mac_ops.hw_scan = NULL; ++ pax_open_kernel(); ++ *(void **)&il3945_mac_ops.hw_scan = NULL; ++ pax_close_kernel(); + } + + D_INFO("*** LOAD DRIVER ***\n"); +diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c +index b7ce6a6..5649756 100644 +--- a/drivers/net/wireless/mac80211_hwsim.c ++++ b/drivers/net/wireless/mac80211_hwsim.c +@@ -1721,9 +1721,11 @@ static int __init init_mac80211_hwsim(void) + return -EINVAL; + + if (fake_hw_scan) { +- mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan; +- mac80211_hwsim_ops.sw_scan_start = NULL; +- mac80211_hwsim_ops.sw_scan_complete = NULL; ++ pax_open_kernel(); ++ *(void **)&mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan; ++ *(void **)&mac80211_hwsim_ops.sw_scan_start = NULL; ++ *(void **)&mac80211_hwsim_ops.sw_scan_complete = NULL; ++ pax_close_kernel(); + } + + spin_lock_init(&hwsim_radio_lock); +diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h +index 35225e9..95e6bf9 100644 +--- a/drivers/net/wireless/mwifiex/main.h ++++ b/drivers/net/wireless/mwifiex/main.h +@@ -537,7 +537,7 @@ struct mwifiex_if_ops { + void (*cleanup_mpa_buf) (struct mwifiex_adapter *); + int (*cmdrsp_complete) (struct mwifiex_adapter *, struct sk_buff *); + int (*event_complete) (struct mwifiex_adapter *, struct sk_buff *); +-}; ++} __no_const; + + struct mwifiex_adapter { + u8 iface_type; +diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c +index d66e298..55b0a89 100644 +--- a/drivers/net/wireless/rndis_wlan.c ++++ b/drivers/net/wireless/rndis_wlan.c +@@ -1278,7 +1278,7 @@ static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold) + + netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold); + +- if (rts_threshold < 0 || rts_threshold > 2347) ++ if (rts_threshold > 2347) + rts_threshold = 2347; + + tmp = cpu_to_le32(rts_threshold); +diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h +index c264dfa..08ee30e 100644 +--- a/drivers/net/wireless/rt2x00/rt2x00.h ++++ b/drivers/net/wireless/rt2x00/rt2x00.h +@@ -396,7 +396,7 @@ struct rt2x00_intf { + * for hardware which doesn't support hardware + * sequence counting. + */ +- atomic_t seqno; ++ atomic_unchecked_t seqno; + }; + + static inline struct rt2x00_intf* vif_to_intf(struct ieee80211_vif *vif) +diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c +index 50f92d5..f3afc41 100644 +--- a/drivers/net/wireless/rt2x00/rt2x00queue.c ++++ b/drivers/net/wireless/rt2x00/rt2x00queue.c +@@ -229,9 +229,9 @@ static void rt2x00queue_create_tx_descriptor_seq(struct rt2x00_dev *rt2x00dev, + * sequence counter given by mac80211. + */ + if (test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags)) +- seqno = atomic_add_return(0x10, &intf->seqno); ++ seqno = atomic_add_return_unchecked(0x10, &intf->seqno); + else +- seqno = atomic_read(&intf->seqno); ++ seqno = atomic_read_unchecked(&intf->seqno); + + hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); + hdr->seq_ctrl |= cpu_to_le16(seqno); +diff --git a/drivers/net/wireless/wl1251/wl1251.h b/drivers/net/wireless/wl1251/wl1251.h +index 9d8f581..0f6589e 100644 +--- a/drivers/net/wireless/wl1251/wl1251.h ++++ b/drivers/net/wireless/wl1251/wl1251.h +@@ -266,7 +266,7 @@ struct wl1251_if_operations { + void (*reset)(struct wl1251 *wl); + void (*enable_irq)(struct wl1251 *wl); + void (*disable_irq)(struct wl1251 *wl); +-}; ++} __no_const; + + struct wl1251 { + struct ieee80211_hw *hw; +diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c +index f34b5b2..b5abb9f 100644 +--- a/drivers/oprofile/buffer_sync.c ++++ b/drivers/oprofile/buffer_sync.c +@@ -343,7 +343,7 @@ static void add_data(struct op_entry *entry, struct mm_struct *mm) + if (cookie == NO_COOKIE) + offset = pc; + if (cookie == INVALID_COOKIE) { +- atomic_inc(&oprofile_stats.sample_lost_no_mapping); ++ atomic_inc_unchecked(&oprofile_stats.sample_lost_no_mapping); + offset = pc; + } + if (cookie != last_cookie) { +@@ -387,14 +387,14 @@ add_sample(struct mm_struct *mm, struct op_sample *s, int in_kernel) + /* add userspace sample */ + + if (!mm) { +- atomic_inc(&oprofile_stats.sample_lost_no_mm); ++ atomic_inc_unchecked(&oprofile_stats.sample_lost_no_mm); + return 0; + } + + cookie = lookup_dcookie(mm, s->eip, &offset); + + if (cookie == INVALID_COOKIE) { +- atomic_inc(&oprofile_stats.sample_lost_no_mapping); ++ atomic_inc_unchecked(&oprofile_stats.sample_lost_no_mapping); + return 0; + } + +@@ -563,7 +563,7 @@ void sync_buffer(int cpu) + /* ignore backtraces if failed to add a sample */ + if (state == sb_bt_start) { + state = sb_bt_ignore; +- atomic_inc(&oprofile_stats.bt_lost_no_mapping); ++ atomic_inc_unchecked(&oprofile_stats.bt_lost_no_mapping); + } + } + release_mm(mm); +diff --git a/drivers/oprofile/event_buffer.c b/drivers/oprofile/event_buffer.c +index c0cc4e7..44d4e54 100644 +--- a/drivers/oprofile/event_buffer.c ++++ b/drivers/oprofile/event_buffer.c +@@ -53,7 +53,7 @@ void add_event_entry(unsigned long value) + } + + if (buffer_pos == buffer_size) { +- atomic_inc(&oprofile_stats.event_lost_overflow); ++ atomic_inc_unchecked(&oprofile_stats.event_lost_overflow); + return; + } + +diff --git a/drivers/oprofile/oprof.c b/drivers/oprofile/oprof.c +index ed2c3ec..deda85a 100644 +--- a/drivers/oprofile/oprof.c ++++ b/drivers/oprofile/oprof.c +@@ -110,7 +110,7 @@ static void switch_worker(struct work_struct *work) + if (oprofile_ops.switch_events()) + return; + +- atomic_inc(&oprofile_stats.multiplex_counter); ++ atomic_inc_unchecked(&oprofile_stats.multiplex_counter); + start_switch_worker(); + } + +diff --git a/drivers/oprofile/oprofile_stats.c b/drivers/oprofile/oprofile_stats.c +index 917d28e..d62d981 100644 +--- a/drivers/oprofile/oprofile_stats.c ++++ b/drivers/oprofile/oprofile_stats.c +@@ -30,11 +30,11 @@ void oprofile_reset_stats(void) + cpu_buf->sample_invalid_eip = 0; + } + +- atomic_set(&oprofile_stats.sample_lost_no_mm, 0); +- atomic_set(&oprofile_stats.sample_lost_no_mapping, 0); +- atomic_set(&oprofile_stats.event_lost_overflow, 0); +- atomic_set(&oprofile_stats.bt_lost_no_mapping, 0); +- atomic_set(&oprofile_stats.multiplex_counter, 0); ++ atomic_set_unchecked(&oprofile_stats.sample_lost_no_mm, 0); ++ atomic_set_unchecked(&oprofile_stats.sample_lost_no_mapping, 0); ++ atomic_set_unchecked(&oprofile_stats.event_lost_overflow, 0); ++ atomic_set_unchecked(&oprofile_stats.bt_lost_no_mapping, 0); ++ atomic_set_unchecked(&oprofile_stats.multiplex_counter, 0); + } + + +diff --git a/drivers/oprofile/oprofile_stats.h b/drivers/oprofile/oprofile_stats.h +index 38b6fc0..b5cbfce 100644 +--- a/drivers/oprofile/oprofile_stats.h ++++ b/drivers/oprofile/oprofile_stats.h +@@ -13,11 +13,11 @@ + #include <linux/atomic.h> + + struct oprofile_stat_struct { +- atomic_t sample_lost_no_mm; +- atomic_t sample_lost_no_mapping; +- atomic_t bt_lost_no_mapping; +- atomic_t event_lost_overflow; +- atomic_t multiplex_counter; ++ atomic_unchecked_t sample_lost_no_mm; ++ atomic_unchecked_t sample_lost_no_mapping; ++ atomic_unchecked_t bt_lost_no_mapping; ++ atomic_unchecked_t event_lost_overflow; ++ atomic_unchecked_t multiplex_counter; + }; + + extern struct oprofile_stat_struct oprofile_stats; +diff --git a/drivers/oprofile/oprofilefs.c b/drivers/oprofile/oprofilefs.c +index 849357c..b83c1e0 100644 +--- a/drivers/oprofile/oprofilefs.c ++++ b/drivers/oprofile/oprofilefs.c +@@ -185,7 +185,7 @@ static const struct file_operations atomic_ro_fops = { + + + int oprofilefs_create_ro_atomic(struct super_block *sb, struct dentry *root, +- char const *name, atomic_t *val) ++ char const *name, atomic_unchecked_t *val) + { + return __oprofilefs_create_file(sb, root, name, + &atomic_ro_fops, 0444, val); +diff --git a/drivers/parport/procfs.c b/drivers/parport/procfs.c +index 3f56bc0..707d642 100644 +--- a/drivers/parport/procfs.c ++++ b/drivers/parport/procfs.c +@@ -64,7 +64,7 @@ static int do_active_device(ctl_table *table, int write, + + *ppos += len; + +- return copy_to_user(result, buffer, len) ? -EFAULT : 0; ++ return (len > sizeof buffer || copy_to_user(result, buffer, len)) ? -EFAULT : 0; + } + + #ifdef CONFIG_PARPORT_1284 +@@ -106,7 +106,7 @@ static int do_autoprobe(ctl_table *table, int write, + + *ppos += len; + +- return copy_to_user (result, buffer, len) ? -EFAULT : 0; ++ return (len > sizeof buffer || copy_to_user (result, buffer, len)) ? -EFAULT : 0; + } + #endif /* IEEE1284.3 support. */ + +diff --git a/drivers/pci/hotplug/cpci_hotplug.h b/drivers/pci/hotplug/cpci_hotplug.h +index 9fff878..ad0ad53 100644 +--- a/drivers/pci/hotplug/cpci_hotplug.h ++++ b/drivers/pci/hotplug/cpci_hotplug.h +@@ -59,7 +59,7 @@ struct cpci_hp_controller_ops { + int (*hardware_test) (struct slot* slot, u32 value); + u8 (*get_power) (struct slot* slot); + int (*set_power) (struct slot* slot, int value); +-}; ++} __no_const; + + struct cpci_hp_controller { + unsigned int irq; +diff --git a/drivers/pci/hotplug/cpqphp_nvram.c b/drivers/pci/hotplug/cpqphp_nvram.c +index 76ba8a1..20ca857 100644 +--- a/drivers/pci/hotplug/cpqphp_nvram.c ++++ b/drivers/pci/hotplug/cpqphp_nvram.c +@@ -428,9 +428,13 @@ static u32 store_HRT (void __iomem *rom_start) + + void compaq_nvram_init (void __iomem *rom_start) + { ++ ++#ifndef CONFIG_PAX_KERNEXEC + if (rom_start) { + compaq_int15_entry_point = (rom_start + ROM_INT15_PHY_ADDR - ROM_PHY_ADDR); + } ++#endif ++ + dbg("int15 entry = %p\n", compaq_int15_entry_point); + + /* initialize our int15 lock */ +diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c +index b500840..d7159d3 100644 +--- a/drivers/pci/pcie/aspm.c ++++ b/drivers/pci/pcie/aspm.c +@@ -27,9 +27,9 @@ + #define MODULE_PARAM_PREFIX "pcie_aspm." + + /* Note: those are not register definitions */ +-#define ASPM_STATE_L0S_UP (1) /* Upstream direction L0s state */ +-#define ASPM_STATE_L0S_DW (2) /* Downstream direction L0s state */ +-#define ASPM_STATE_L1 (4) /* L1 state */ ++#define ASPM_STATE_L0S_UP (1U) /* Upstream direction L0s state */ ++#define ASPM_STATE_L0S_DW (2U) /* Downstream direction L0s state */ ++#define ASPM_STATE_L1 (4U) /* L1 state */ + #define ASPM_STATE_L0S (ASPM_STATE_L0S_UP | ASPM_STATE_L0S_DW) + #define ASPM_STATE_ALL (ASPM_STATE_L0S | ASPM_STATE_L1) + +diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c +index 5e1ca3c..08082fe 100644 +--- a/drivers/pci/probe.c ++++ b/drivers/pci/probe.c +@@ -215,7 +215,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, + u16 orig_cmd; + struct pci_bus_region region; + +- mask = type ? PCI_ROM_ADDRESS_MASK : ~0; ++ mask = type ? (u32)PCI_ROM_ADDRESS_MASK : ~0; + + if (!dev->mmio_always_on) { + pci_read_config_word(dev, PCI_COMMAND, &orig_cmd); +diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c +index 27911b5..5b6db88 100644 +--- a/drivers/pci/proc.c ++++ b/drivers/pci/proc.c +@@ -476,7 +476,16 @@ static const struct file_operations proc_bus_pci_dev_operations = { + static int __init pci_proc_init(void) + { + struct pci_dev *dev = NULL; ++ ++#ifdef CONFIG_GRKERNSEC_PROC_ADD ++#ifdef CONFIG_GRKERNSEC_PROC_USER ++ proc_bus_pci_dir = proc_mkdir_mode("bus/pci", S_IRUSR | S_IXUSR, NULL); ++#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++ proc_bus_pci_dir = proc_mkdir_mode("bus/pci", S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP, NULL); ++#endif ++#else + proc_bus_pci_dir = proc_mkdir("bus/pci", NULL); ++#endif + proc_create("devices", 0, proc_bus_pci_dir, + &proc_bus_pci_dev_operations); + proc_initialized = 1; +diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c +index d68c000..f6094ca 100644 +--- a/drivers/platform/x86/thinkpad_acpi.c ++++ b/drivers/platform/x86/thinkpad_acpi.c +@@ -2094,7 +2094,7 @@ static int hotkey_mask_get(void) + return 0; + } + +-void static hotkey_mask_warn_incomplete_mask(void) ++static void hotkey_mask_warn_incomplete_mask(void) + { + /* log only what the user can fix... */ + const u32 wantedmask = hotkey_driver_mask & +@@ -2325,11 +2325,6 @@ static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) + } + } + +-static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, +- struct tp_nvram_state *newn, +- const u32 event_mask) +-{ +- + #define TPACPI_COMPARE_KEY(__scancode, __member) \ + do { \ + if ((event_mask & (1 << __scancode)) && \ +@@ -2343,36 +2338,42 @@ static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, + tpacpi_hotkey_send_key(__scancode); \ + } while (0) + +- void issue_volchange(const unsigned int oldvol, +- const unsigned int newvol) +- { +- unsigned int i = oldvol; ++static void issue_volchange(const unsigned int oldvol, ++ const unsigned int newvol, ++ const u32 event_mask) ++{ ++ unsigned int i = oldvol; + +- while (i > newvol) { +- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); +- i--; +- } +- while (i < newvol) { +- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); +- i++; +- } ++ while (i > newvol) { ++ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); ++ i--; + } ++ while (i < newvol) { ++ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); ++ i++; ++ } ++} + +- void issue_brightnesschange(const unsigned int oldbrt, +- const unsigned int newbrt) +- { +- unsigned int i = oldbrt; ++static void issue_brightnesschange(const unsigned int oldbrt, ++ const unsigned int newbrt, ++ const u32 event_mask) ++{ ++ unsigned int i = oldbrt; + +- while (i > newbrt) { +- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); +- i--; +- } +- while (i < newbrt) { +- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); +- i++; +- } ++ while (i > newbrt) { ++ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); ++ i--; ++ } ++ while (i < newbrt) { ++ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); ++ i++; + } ++} + ++static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, ++ struct tp_nvram_state *newn, ++ const u32 event_mask) ++{ + TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); + TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); + TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); +@@ -2406,7 +2407,7 @@ static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, + oldn->volume_level != newn->volume_level) { + /* recently muted, or repeated mute keypress, or + * multiple presses ending in mute */ +- issue_volchange(oldn->volume_level, newn->volume_level); ++ issue_volchange(oldn->volume_level, newn->volume_level, event_mask); + TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); + } + } else { +@@ -2416,7 +2417,7 @@ static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, + TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); + } + if (oldn->volume_level != newn->volume_level) { +- issue_volchange(oldn->volume_level, newn->volume_level); ++ issue_volchange(oldn->volume_level, newn->volume_level, event_mask); + } else if (oldn->volume_toggle != newn->volume_toggle) { + /* repeated vol up/down keypress at end of scale ? */ + if (newn->volume_level == 0) +@@ -2429,7 +2430,8 @@ static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, + /* handle brightness */ + if (oldn->brightness_level != newn->brightness_level) { + issue_brightnesschange(oldn->brightness_level, +- newn->brightness_level); ++ newn->brightness_level, ++ event_mask); + } else if (oldn->brightness_toggle != newn->brightness_toggle) { + /* repeated key presses that didn't change state */ + if (newn->brightness_level == 0) +@@ -2438,10 +2440,10 @@ static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, + && !tp_features.bright_unkfw) + TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); + } ++} + + #undef TPACPI_COMPARE_KEY + #undef TPACPI_MAY_SEND_KEY +-} + + /* + * Polling driver +diff --git a/drivers/pnp/pnpbios/bioscalls.c b/drivers/pnp/pnpbios/bioscalls.c +index 769d265..a3a05ca 100644 +--- a/drivers/pnp/pnpbios/bioscalls.c ++++ b/drivers/pnp/pnpbios/bioscalls.c +@@ -58,7 +58,7 @@ do { \ + set_desc_limit(&gdt[(selname) >> 3], (size) - 1); \ + } while(0) + +-static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092, ++static const struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4093, + (unsigned long)__va(0x400UL), PAGE_SIZE - 0x400 - 1); + + /* +@@ -95,7 +95,10 @@ static inline u16 call_pnp_bios(u16 func, u16 arg1, u16 arg2, u16 arg3, + + cpu = get_cpu(); + save_desc_40 = get_cpu_gdt_table(cpu)[0x40 / 8]; ++ ++ pax_open_kernel(); + get_cpu_gdt_table(cpu)[0x40 / 8] = bad_bios_desc; ++ pax_close_kernel(); + + /* On some boxes IRQ's during PnP BIOS calls are deadly. */ + spin_lock_irqsave(&pnp_bios_lock, flags); +@@ -133,7 +136,10 @@ static inline u16 call_pnp_bios(u16 func, u16 arg1, u16 arg2, u16 arg3, + :"memory"); + spin_unlock_irqrestore(&pnp_bios_lock, flags); + ++ pax_open_kernel(); + get_cpu_gdt_table(cpu)[0x40 / 8] = save_desc_40; ++ pax_close_kernel(); ++ + put_cpu(); + + /* If we get here and this is set then the PnP BIOS faulted on us. */ +@@ -467,7 +473,7 @@ int pnp_bios_read_escd(char *data, u32 nvram_base) + return status; + } + +-void pnpbios_calls_init(union pnp_bios_install_struct *header) ++void __init pnpbios_calls_init(union pnp_bios_install_struct *header) + { + int i; + +@@ -475,6 +481,8 @@ void pnpbios_calls_init(union pnp_bios_install_struct *header) + pnp_bios_callpoint.offset = header->fields.pm16offset; + pnp_bios_callpoint.segment = PNP_CS16; + ++ pax_open_kernel(); ++ + for_each_possible_cpu(i) { + struct desc_struct *gdt = get_cpu_gdt_table(i); + if (!gdt) +@@ -486,4 +494,6 @@ void pnpbios_calls_init(union pnp_bios_install_struct *header) + set_desc_base(&gdt[GDT_ENTRY_PNPBIOS_DS], + (unsigned long)__va(header->fields.pm16dseg)); + } ++ ++ pax_close_kernel(); + } +diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c +index b0ecacb..7c9da2e 100644 +--- a/drivers/pnp/resource.c ++++ b/drivers/pnp/resource.c +@@ -360,7 +360,7 @@ int pnp_check_irq(struct pnp_dev *dev, struct resource *res) + return 1; + + /* check if the resource is valid */ +- if (*irq < 0 || *irq > 15) ++ if (*irq > 15) + return 0; + + /* check if the resource is reserved */ +@@ -424,7 +424,7 @@ int pnp_check_dma(struct pnp_dev *dev, struct resource *res) + return 1; + + /* check if the resource is valid */ +- if (*dma < 0 || *dma == 4 || *dma > 7) ++ if (*dma == 4 || *dma > 7) + return 0; + + /* check if the resource is reserved */ +diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c +index 222ccd8..6275fa5 100644 +--- a/drivers/power/bq27x00_battery.c ++++ b/drivers/power/bq27x00_battery.c +@@ -72,7 +72,7 @@ + struct bq27x00_device_info; + struct bq27x00_access_methods { + int (*read)(struct bq27x00_device_info *di, u8 reg, bool single); +-}; ++} __no_const; + + enum bq27x00_chip { BQ27000, BQ27500 }; + +diff --git a/drivers/regulator/max8660.c b/drivers/regulator/max8660.c +index 4c5b053..104263e 100644 +--- a/drivers/regulator/max8660.c ++++ b/drivers/regulator/max8660.c +@@ -385,8 +385,10 @@ static int __devinit max8660_probe(struct i2c_client *client, + max8660->shadow_regs[MAX8660_OVER1] = 5; + } else { + /* Otherwise devices can be toggled via software */ +- max8660_dcdc_ops.enable = max8660_dcdc_enable; +- max8660_dcdc_ops.disable = max8660_dcdc_disable; ++ pax_open_kernel(); ++ *(void **)&max8660_dcdc_ops.enable = max8660_dcdc_enable; ++ *(void **)&max8660_dcdc_ops.disable = max8660_dcdc_disable; ++ pax_close_kernel(); + } + + /* +diff --git a/drivers/regulator/mc13892-regulator.c b/drivers/regulator/mc13892-regulator.c +index 845aa22..99ec402 100644 +--- a/drivers/regulator/mc13892-regulator.c ++++ b/drivers/regulator/mc13892-regulator.c +@@ -574,10 +574,12 @@ static int __devinit mc13892_regulator_probe(struct platform_device *pdev) + } + mc13xxx_unlock(mc13892); + +- mc13892_regulators[MC13892_VCAM].desc.ops->set_mode ++ pax_open_kernel(); ++ *(void **)&mc13892_regulators[MC13892_VCAM].desc.ops->set_mode + = mc13892_vcam_set_mode; +- mc13892_regulators[MC13892_VCAM].desc.ops->get_mode ++ *(void **)&mc13892_regulators[MC13892_VCAM].desc.ops->get_mode + = mc13892_vcam_get_mode; ++ pax_close_kernel(); + + mc13xxx_data = mc13xxx_parse_regulators_dt(pdev, mc13892_regulators, + ARRAY_SIZE(mc13892_regulators)); +diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c +index cace6d3..f623fda 100644 +--- a/drivers/rtc/rtc-dev.c ++++ b/drivers/rtc/rtc-dev.c +@@ -14,6 +14,7 @@ + #include <linux/module.h> + #include <linux/rtc.h> + #include <linux/sched.h> ++#include <linux/grsecurity.h> + #include "rtc-core.h" + + static dev_t rtc_devt; +@@ -345,6 +346,8 @@ static long rtc_dev_ioctl(struct file *file, + if (copy_from_user(&tm, uarg, sizeof(tm))) + return -EFAULT; + ++ gr_log_timechange(); ++ + return rtc_set_time(rtc, &tm); + + case RTC_PIE_ON: +diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h +index 3fcf627..f334910 100644 +--- a/drivers/scsi/aacraid/aacraid.h ++++ b/drivers/scsi/aacraid/aacraid.h +@@ -492,7 +492,7 @@ struct adapter_ops + int (*adapter_scsi)(struct fib * fib, struct scsi_cmnd * cmd); + /* Administrative operations */ + int (*adapter_comm)(struct aac_dev * dev, int comm); +-}; ++} __no_const; + + /* + * Define which interrupt handler needs to be installed +diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c +index 0d279c44..3d25a97 100644 +--- a/drivers/scsi/aacraid/linit.c ++++ b/drivers/scsi/aacraid/linit.c +@@ -93,7 +93,7 @@ static DECLARE_PCI_DEVICE_TABLE(aac_pci_tbl) = { + #elif defined(__devinitconst) + static const struct pci_device_id aac_pci_tbl[] __devinitconst = { + #else +-static const struct pci_device_id aac_pci_tbl[] __devinitdata = { ++static const struct pci_device_id aac_pci_tbl[] __devinitconst = { + #endif + { 0x1028, 0x0001, 0x1028, 0x0001, 0, 0, 0 }, /* PERC 2/Si (Iguana/PERC2Si) */ + { 0x1028, 0x0002, 0x1028, 0x0002, 0, 0, 1 }, /* PERC 3/Di (Opal/PERC3Di) */ +diff --git a/drivers/scsi/aic94xx/aic94xx_init.c b/drivers/scsi/aic94xx/aic94xx_init.c +index ff80552..1c4120c 100644 +--- a/drivers/scsi/aic94xx/aic94xx_init.c ++++ b/drivers/scsi/aic94xx/aic94xx_init.c +@@ -1012,7 +1012,7 @@ static struct sas_domain_function_template aic94xx_transport_functions = { + .lldd_ata_set_dmamode = asd_set_dmamode, + }; + +-static const struct pci_device_id aic94xx_pci_table[] __devinitdata = { ++static const struct pci_device_id aic94xx_pci_table[] __devinitconst = { + {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x410),0, 0, 1}, + {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x412),0, 0, 1}, + {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x416),0, 0, 1}, +diff --git a/drivers/scsi/bfa/bfa.h b/drivers/scsi/bfa/bfa.h +index 4ad7e36..d004679 100644 +--- a/drivers/scsi/bfa/bfa.h ++++ b/drivers/scsi/bfa/bfa.h +@@ -196,7 +196,7 @@ struct bfa_hwif_s { + u32 *end); + int cpe_vec_q0; + int rme_vec_q0; +-}; ++} __no_const; + typedef void (*bfa_cb_iocfc_t) (void *cbarg, enum bfa_status status); + + struct bfa_faa_cbfn_s { +diff --git a/drivers/scsi/bfa/bfa_fcpim.c b/drivers/scsi/bfa/bfa_fcpim.c +index f0f80e2..8ec946b 100644 +--- a/drivers/scsi/bfa/bfa_fcpim.c ++++ b/drivers/scsi/bfa/bfa_fcpim.c +@@ -3715,7 +3715,7 @@ bfa_fcp_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg, + + bfa_iotag_attach(fcp); + +- fcp->itn_arr = (struct bfa_itn_s *) bfa_mem_kva_curp(fcp); ++ fcp->itn_arr = (bfa_itn_s_no_const *) bfa_mem_kva_curp(fcp); + bfa_mem_kva_curp(fcp) = (u8 *)fcp->itn_arr + + (fcp->num_itns * sizeof(struct bfa_itn_s)); + memset(fcp->itn_arr, 0, +@@ -3773,7 +3773,7 @@ bfa_itn_create(struct bfa_s *bfa, struct bfa_rport_s *rport, + void (*isr)(struct bfa_s *bfa, struct bfi_msg_s *m)) + { + struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa); +- struct bfa_itn_s *itn; ++ bfa_itn_s_no_const *itn; + + itn = BFA_ITN_FROM_TAG(fcp, rport->rport_tag); + itn->isr = isr; +diff --git a/drivers/scsi/bfa/bfa_fcpim.h b/drivers/scsi/bfa/bfa_fcpim.h +index 36f26da..38a34a8 100644 +--- a/drivers/scsi/bfa/bfa_fcpim.h ++++ b/drivers/scsi/bfa/bfa_fcpim.h +@@ -37,6 +37,7 @@ struct bfa_iotag_s { + struct bfa_itn_s { + bfa_isr_func_t isr; + }; ++typedef struct bfa_itn_s __no_const bfa_itn_s_no_const; + + void bfa_itn_create(struct bfa_s *bfa, struct bfa_rport_s *rport, + void (*isr)(struct bfa_s *bfa, struct bfi_msg_s *m)); +@@ -147,7 +148,7 @@ struct bfa_fcp_mod_s { + struct list_head iotag_tio_free_q; /* free IO resources */ + struct list_head iotag_unused_q; /* unused IO resources*/ + struct bfa_iotag_s *iotag_arr; +- struct bfa_itn_s *itn_arr; ++ bfa_itn_s_no_const *itn_arr; + int num_ioim_reqs; + int num_fwtio_reqs; + int num_itns; +diff --git a/drivers/scsi/bfa/bfa_ioc.h b/drivers/scsi/bfa/bfa_ioc.h +index 1a99d4b..e85d64b 100644 +--- a/drivers/scsi/bfa/bfa_ioc.h ++++ b/drivers/scsi/bfa/bfa_ioc.h +@@ -258,7 +258,7 @@ struct bfa_ioc_cbfn_s { + bfa_ioc_disable_cbfn_t disable_cbfn; + bfa_ioc_hbfail_cbfn_t hbfail_cbfn; + bfa_ioc_reset_cbfn_t reset_cbfn; +-}; ++} __no_const; + + /* + * IOC event notification mechanism. +@@ -346,7 +346,7 @@ struct bfa_ioc_hwif_s { + void (*ioc_sync_ack) (struct bfa_ioc_s *ioc); + bfa_boolean_t (*ioc_sync_complete) (struct bfa_ioc_s *ioc); + bfa_boolean_t (*ioc_lpu_read_stat) (struct bfa_ioc_s *ioc); +-}; ++} __no_const; + + /* + * Queue element to wait for room in request queue. FIFO order is +diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c +index a3a056a..b9bbc2f 100644 +--- a/drivers/scsi/hosts.c ++++ b/drivers/scsi/hosts.c +@@ -42,7 +42,7 @@ + #include "scsi_logging.h" + + +-static atomic_t scsi_host_next_hn; /* host_no for next new host */ ++static atomic_unchecked_t scsi_host_next_hn; /* host_no for next new host */ + + + static void scsi_host_cls_release(struct device *dev) +@@ -360,7 +360,7 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize) + * subtract one because we increment first then return, but we need to + * know what the next host number was before increment + */ +- shost->host_no = atomic_inc_return(&scsi_host_next_hn) - 1; ++ shost->host_no = atomic_inc_return_unchecked(&scsi_host_next_hn) - 1; + shost->dma_channel = 0xff; + + /* These three are default values which can be overridden */ +diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c +index 500e20d..ebd3059 100644 +--- a/drivers/scsi/hpsa.c ++++ b/drivers/scsi/hpsa.c +@@ -521,7 +521,7 @@ static inline u32 next_command(struct ctlr_info *h) + u32 a; + + if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) +- return h->access.command_completed(h); ++ return h->access->command_completed(h); + + if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) { + a = *(h->reply_pool_head); /* Next cmd in ring buffer */ +@@ -3002,7 +3002,7 @@ static void start_io(struct ctlr_info *h) + while (!list_empty(&h->reqQ)) { + c = list_entry(h->reqQ.next, struct CommandList, list); + /* can't do anything if fifo is full */ +- if ((h->access.fifo_full(h))) { ++ if ((h->access->fifo_full(h))) { + dev_warn(&h->pdev->dev, "fifo full\n"); + break; + } +@@ -3012,7 +3012,7 @@ static void start_io(struct ctlr_info *h) + h->Qdepth--; + + /* Tell the controller execute command */ +- h->access.submit_command(h, c); ++ h->access->submit_command(h, c); + + /* Put job onto the completed Q */ + addQ(&h->cmpQ, c); +@@ -3021,17 +3021,17 @@ static void start_io(struct ctlr_info *h) + + static inline unsigned long get_next_completion(struct ctlr_info *h) + { +- return h->access.command_completed(h); ++ return h->access->command_completed(h); + } + + static inline bool interrupt_pending(struct ctlr_info *h) + { +- return h->access.intr_pending(h); ++ return h->access->intr_pending(h); + } + + static inline long interrupt_not_for_us(struct ctlr_info *h) + { +- return (h->access.intr_pending(h) == 0) || ++ return (h->access->intr_pending(h) == 0) || + (h->interrupts_enabled == 0); + } + +@@ -3930,7 +3930,7 @@ static int __devinit hpsa_pci_init(struct ctlr_info *h) + if (prod_index < 0) + return -ENODEV; + h->product_name = products[prod_index].product_name; +- h->access = *(products[prod_index].access); ++ h->access = products[prod_index].access; + + if (hpsa_board_disabled(h->pdev)) { + dev_warn(&h->pdev->dev, "controller appears to be disabled\n"); +@@ -4175,7 +4175,7 @@ static void controller_lockup_detected(struct ctlr_info *h) + + assert_spin_locked(&lockup_detector_lock); + remove_ctlr_from_lockup_detector_list(h); +- h->access.set_intr_mask(h, HPSA_INTR_OFF); ++ h->access->set_intr_mask(h, HPSA_INTR_OFF); + spin_lock_irqsave(&h->lock, flags); + h->lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); + spin_unlock_irqrestore(&h->lock, flags); +@@ -4355,7 +4355,7 @@ reinit_after_soft_reset: + } + + /* make sure the board interrupts are off */ +- h->access.set_intr_mask(h, HPSA_INTR_OFF); ++ h->access->set_intr_mask(h, HPSA_INTR_OFF); + + if (hpsa_request_irq(h, do_hpsa_intr_msi, do_hpsa_intr_intx)) + goto clean2; +@@ -4389,7 +4389,7 @@ reinit_after_soft_reset: + * fake ones to scoop up any residual completions. + */ + spin_lock_irqsave(&h->lock, flags); +- h->access.set_intr_mask(h, HPSA_INTR_OFF); ++ h->access->set_intr_mask(h, HPSA_INTR_OFF); + spin_unlock_irqrestore(&h->lock, flags); + free_irq(h->intr[h->intr_mode], h); + rc = hpsa_request_irq(h, hpsa_msix_discard_completions, +@@ -4408,9 +4408,9 @@ reinit_after_soft_reset: + dev_info(&h->pdev->dev, "Board READY.\n"); + dev_info(&h->pdev->dev, + "Waiting for stale completions to drain.\n"); +- h->access.set_intr_mask(h, HPSA_INTR_ON); ++ h->access->set_intr_mask(h, HPSA_INTR_ON); + msleep(10000); +- h->access.set_intr_mask(h, HPSA_INTR_OFF); ++ h->access->set_intr_mask(h, HPSA_INTR_OFF); + + rc = controller_reset_failed(h->cfgtable); + if (rc) +@@ -4431,7 +4431,7 @@ reinit_after_soft_reset: + } + + /* Turn the interrupts on so we can service requests */ +- h->access.set_intr_mask(h, HPSA_INTR_ON); ++ h->access->set_intr_mask(h, HPSA_INTR_ON); + + hpsa_hba_inquiry(h); + hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */ +@@ -4483,7 +4483,7 @@ static void hpsa_shutdown(struct pci_dev *pdev) + * To write all data in the battery backed cache to disks + */ + hpsa_flush_cache(h); +- h->access.set_intr_mask(h, HPSA_INTR_OFF); ++ h->access->set_intr_mask(h, HPSA_INTR_OFF); + free_irq(h->intr[h->intr_mode], h); + #ifdef CONFIG_PCI_MSI + if (h->msix_vector) +@@ -4657,7 +4657,7 @@ static __devinit void hpsa_enter_performant_mode(struct ctlr_info *h, + return; + } + /* Change the access methods to the performant access methods */ +- h->access = SA5_performant_access; ++ h->access = &SA5_performant_access; + h->transMethod = CFGTBL_Trans_Performant; + } + +diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h +index 7b28d54..952f23a 100644 +--- a/drivers/scsi/hpsa.h ++++ b/drivers/scsi/hpsa.h +@@ -72,7 +72,7 @@ struct ctlr_info { + unsigned int msix_vector; + unsigned int msi_vector; + int intr_mode; /* either PERF_MODE_INT or SIMPLE_MODE_INT */ +- struct access_method access; ++ struct access_method *access; + + /* queue and queue Info */ + struct list_head reqQ; +diff --git a/drivers/scsi/ips.h b/drivers/scsi/ips.h +index f2df059..a3a9930 100644 +--- a/drivers/scsi/ips.h ++++ b/drivers/scsi/ips.h +@@ -1027,7 +1027,7 @@ typedef struct { + int (*intr)(struct ips_ha *); + void (*enableint)(struct ips_ha *); + uint32_t (*statupd)(struct ips_ha *); +-} ips_hw_func_t; ++} __no_const ips_hw_func_t; + + typedef struct ips_ha { + uint8_t ha_id[IPS_MAX_CHANNELS+1]; +diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c +index aceffad..c35c08d 100644 +--- a/drivers/scsi/libfc/fc_exch.c ++++ b/drivers/scsi/libfc/fc_exch.c +@@ -105,12 +105,12 @@ struct fc_exch_mgr { + * all together if not used XXX + */ + struct { +- atomic_t no_free_exch; +- atomic_t no_free_exch_xid; +- atomic_t xid_not_found; +- atomic_t xid_busy; +- atomic_t seq_not_found; +- atomic_t non_bls_resp; ++ atomic_unchecked_t no_free_exch; ++ atomic_unchecked_t no_free_exch_xid; ++ atomic_unchecked_t xid_not_found; ++ atomic_unchecked_t xid_busy; ++ atomic_unchecked_t seq_not_found; ++ atomic_unchecked_t non_bls_resp; + } stats; + }; + +@@ -719,7 +719,7 @@ static struct fc_exch *fc_exch_em_alloc(struct fc_lport *lport, + /* allocate memory for exchange */ + ep = mempool_alloc(mp->ep_pool, GFP_ATOMIC); + if (!ep) { +- atomic_inc(&mp->stats.no_free_exch); ++ atomic_inc_unchecked(&mp->stats.no_free_exch); + goto out; + } + memset(ep, 0, sizeof(*ep)); +@@ -780,7 +780,7 @@ out: + return ep; + err: + spin_unlock_bh(&pool->lock); +- atomic_inc(&mp->stats.no_free_exch_xid); ++ atomic_inc_unchecked(&mp->stats.no_free_exch_xid); + mempool_free(ep, mp->ep_pool); + return NULL; + } +@@ -923,7 +923,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport, + xid = ntohs(fh->fh_ox_id); /* we originated exch */ + ep = fc_exch_find(mp, xid); + if (!ep) { +- atomic_inc(&mp->stats.xid_not_found); ++ atomic_inc_unchecked(&mp->stats.xid_not_found); + reject = FC_RJT_OX_ID; + goto out; + } +@@ -953,7 +953,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport, + ep = fc_exch_find(mp, xid); + if ((f_ctl & FC_FC_FIRST_SEQ) && fc_sof_is_init(fr_sof(fp))) { + if (ep) { +- atomic_inc(&mp->stats.xid_busy); ++ atomic_inc_unchecked(&mp->stats.xid_busy); + reject = FC_RJT_RX_ID; + goto rel; + } +@@ -964,7 +964,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport, + } + xid = ep->xid; /* get our XID */ + } else if (!ep) { +- atomic_inc(&mp->stats.xid_not_found); ++ atomic_inc_unchecked(&mp->stats.xid_not_found); + reject = FC_RJT_RX_ID; /* XID not found */ + goto out; + } +@@ -981,7 +981,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport, + } else { + sp = &ep->seq; + if (sp->id != fh->fh_seq_id) { +- atomic_inc(&mp->stats.seq_not_found); ++ atomic_inc_unchecked(&mp->stats.seq_not_found); + if (f_ctl & FC_FC_END_SEQ) { + /* + * Update sequence_id based on incoming last +@@ -1431,22 +1431,22 @@ static void fc_exch_recv_seq_resp(struct fc_exch_mgr *mp, struct fc_frame *fp) + + ep = fc_exch_find(mp, ntohs(fh->fh_ox_id)); + if (!ep) { +- atomic_inc(&mp->stats.xid_not_found); ++ atomic_inc_unchecked(&mp->stats.xid_not_found); + goto out; + } + if (ep->esb_stat & ESB_ST_COMPLETE) { +- atomic_inc(&mp->stats.xid_not_found); ++ atomic_inc_unchecked(&mp->stats.xid_not_found); + goto rel; + } + if (ep->rxid == FC_XID_UNKNOWN) + ep->rxid = ntohs(fh->fh_rx_id); + if (ep->sid != 0 && ep->sid != ntoh24(fh->fh_d_id)) { +- atomic_inc(&mp->stats.xid_not_found); ++ atomic_inc_unchecked(&mp->stats.xid_not_found); + goto rel; + } + if (ep->did != ntoh24(fh->fh_s_id) && + ep->did != FC_FID_FLOGI) { +- atomic_inc(&mp->stats.xid_not_found); ++ atomic_inc_unchecked(&mp->stats.xid_not_found); + goto rel; + } + sof = fr_sof(fp); +@@ -1455,7 +1455,7 @@ static void fc_exch_recv_seq_resp(struct fc_exch_mgr *mp, struct fc_frame *fp) + sp->ssb_stat |= SSB_ST_RESP; + sp->id = fh->fh_seq_id; + } else if (sp->id != fh->fh_seq_id) { +- atomic_inc(&mp->stats.seq_not_found); ++ atomic_inc_unchecked(&mp->stats.seq_not_found); + goto rel; + } + +@@ -1519,9 +1519,9 @@ static void fc_exch_recv_resp(struct fc_exch_mgr *mp, struct fc_frame *fp) + sp = fc_seq_lookup_orig(mp, fp); /* doesn't hold sequence */ + + if (!sp) +- atomic_inc(&mp->stats.xid_not_found); ++ atomic_inc_unchecked(&mp->stats.xid_not_found); + else +- atomic_inc(&mp->stats.non_bls_resp); ++ atomic_inc_unchecked(&mp->stats.non_bls_resp); + + fc_frame_free(fp); + } +diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c +index d109cc3..09f4e7d 100644 +--- a/drivers/scsi/libsas/sas_ata.c ++++ b/drivers/scsi/libsas/sas_ata.c +@@ -529,7 +529,7 @@ static struct ata_port_operations sas_sata_ops = { + .postreset = ata_std_postreset, + .error_handler = ata_std_error_handler, + .post_internal_cmd = sas_ata_post_internal, +- .qc_defer = ata_std_qc_defer, ++ .qc_defer = ata_std_qc_defer, + .qc_prep = ata_noop_qc_prep, + .qc_issue = sas_ata_qc_issue, + .qc_fill_rtf = sas_ata_qc_fill_rtf, +diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h +index 3a1ffdd..8eb7c71 100644 +--- a/drivers/scsi/lpfc/lpfc.h ++++ b/drivers/scsi/lpfc/lpfc.h +@@ -413,7 +413,7 @@ struct lpfc_vport { + struct dentry *debug_nodelist; + struct dentry *vport_debugfs_root; + struct lpfc_debugfs_trc *disc_trc; +- atomic_t disc_trc_cnt; ++ atomic_unchecked_t disc_trc_cnt; + #endif + uint8_t stat_data_enabled; + uint8_t stat_data_blocked; +@@ -826,8 +826,8 @@ struct lpfc_hba { + struct timer_list fabric_block_timer; + unsigned long bit_flags; + #define FABRIC_COMANDS_BLOCKED 0 +- atomic_t num_rsrc_err; +- atomic_t num_cmd_success; ++ atomic_unchecked_t num_rsrc_err; ++ atomic_unchecked_t num_cmd_success; + unsigned long last_rsrc_error_time; + unsigned long last_ramp_down_time; + unsigned long last_ramp_up_time; +@@ -863,7 +863,7 @@ struct lpfc_hba { + + struct dentry *debug_slow_ring_trc; + struct lpfc_debugfs_trc *slow_ring_trc; +- atomic_t slow_ring_trc_cnt; ++ atomic_unchecked_t slow_ring_trc_cnt; + /* iDiag debugfs sub-directory */ + struct dentry *idiag_root; + struct dentry *idiag_pci_cfg; +diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c +index af04b0d..8f1a97e 100644 +--- a/drivers/scsi/lpfc/lpfc_debugfs.c ++++ b/drivers/scsi/lpfc/lpfc_debugfs.c +@@ -106,7 +106,7 @@ MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc, + + #include <linux/debugfs.h> + +-static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0); ++static atomic_unchecked_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0); + static unsigned long lpfc_debugfs_start_time = 0L; + + /* iDiag */ +@@ -147,7 +147,7 @@ lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size) + lpfc_debugfs_enable = 0; + + len = 0; +- index = (atomic_read(&vport->disc_trc_cnt) + 1) & ++ index = (atomic_read_unchecked(&vport->disc_trc_cnt) + 1) & + (lpfc_debugfs_max_disc_trc - 1); + for (i = index; i < lpfc_debugfs_max_disc_trc; i++) { + dtp = vport->disc_trc + i; +@@ -213,7 +213,7 @@ lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size) + lpfc_debugfs_enable = 0; + + len = 0; +- index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) & ++ index = (atomic_read_unchecked(&phba->slow_ring_trc_cnt) + 1) & + (lpfc_debugfs_max_slow_ring_trc - 1); + for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) { + dtp = phba->slow_ring_trc + i; +@@ -636,14 +636,14 @@ lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt, + !vport || !vport->disc_trc) + return; + +- index = atomic_inc_return(&vport->disc_trc_cnt) & ++ index = atomic_inc_return_unchecked(&vport->disc_trc_cnt) & + (lpfc_debugfs_max_disc_trc - 1); + dtp = vport->disc_trc + index; + dtp->fmt = fmt; + dtp->data1 = data1; + dtp->data2 = data2; + dtp->data3 = data3; +- dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt); ++ dtp->seq_cnt = atomic_inc_return_unchecked(&lpfc_debugfs_seq_trc_cnt); + dtp->jif = jiffies; + #endif + return; +@@ -674,14 +674,14 @@ lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt, + !phba || !phba->slow_ring_trc) + return; + +- index = atomic_inc_return(&phba->slow_ring_trc_cnt) & ++ index = atomic_inc_return_unchecked(&phba->slow_ring_trc_cnt) & + (lpfc_debugfs_max_slow_ring_trc - 1); + dtp = phba->slow_ring_trc + index; + dtp->fmt = fmt; + dtp->data1 = data1; + dtp->data2 = data2; + dtp->data3 = data3; +- dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt); ++ dtp->seq_cnt = atomic_inc_return_unchecked(&lpfc_debugfs_seq_trc_cnt); + dtp->jif = jiffies; + #endif + return; +@@ -4090,7 +4090,7 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport) + "slow_ring buffer\n"); + goto debug_failed; + } +- atomic_set(&phba->slow_ring_trc_cnt, 0); ++ atomic_set_unchecked(&phba->slow_ring_trc_cnt, 0); + memset(phba->slow_ring_trc, 0, + (sizeof(struct lpfc_debugfs_trc) * + lpfc_debugfs_max_slow_ring_trc)); +@@ -4136,7 +4136,7 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport) + "buffer\n"); + goto debug_failed; + } +- atomic_set(&vport->disc_trc_cnt, 0); ++ atomic_set_unchecked(&vport->disc_trc_cnt, 0); + + snprintf(name, sizeof(name), "discovery_trace"); + vport->debug_disc_trc = +diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c +index 9598fdc..7e9f3d9 100644 +--- a/drivers/scsi/lpfc/lpfc_init.c ++++ b/drivers/scsi/lpfc/lpfc_init.c +@@ -10266,8 +10266,10 @@ lpfc_init(void) + "misc_register returned with status %d", error); + + if (lpfc_enable_npiv) { +- lpfc_transport_functions.vport_create = lpfc_vport_create; +- lpfc_transport_functions.vport_delete = lpfc_vport_delete; ++ pax_open_kernel(); ++ *(void **)&lpfc_transport_functions.vport_create = lpfc_vport_create; ++ *(void **)&lpfc_transport_functions.vport_delete = lpfc_vport_delete; ++ pax_close_kernel(); + } + lpfc_transport_template = + fc_attach_transport(&lpfc_transport_functions); +diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c +index 88f3a83..686d3fa 100644 +--- a/drivers/scsi/lpfc/lpfc_scsi.c ++++ b/drivers/scsi/lpfc/lpfc_scsi.c +@@ -311,7 +311,7 @@ lpfc_rampdown_queue_depth(struct lpfc_hba *phba) + uint32_t evt_posted; + + spin_lock_irqsave(&phba->hbalock, flags); +- atomic_inc(&phba->num_rsrc_err); ++ atomic_inc_unchecked(&phba->num_rsrc_err); + phba->last_rsrc_error_time = jiffies; + + if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) { +@@ -352,7 +352,7 @@ lpfc_rampup_queue_depth(struct lpfc_vport *vport, + unsigned long flags; + struct lpfc_hba *phba = vport->phba; + uint32_t evt_posted; +- atomic_inc(&phba->num_cmd_success); ++ atomic_inc_unchecked(&phba->num_cmd_success); + + if (vport->cfg_lun_queue_depth <= queue_depth) + return; +@@ -396,8 +396,8 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) + unsigned long num_rsrc_err, num_cmd_success; + int i; + +- num_rsrc_err = atomic_read(&phba->num_rsrc_err); +- num_cmd_success = atomic_read(&phba->num_cmd_success); ++ num_rsrc_err = atomic_read_unchecked(&phba->num_rsrc_err); ++ num_cmd_success = atomic_read_unchecked(&phba->num_cmd_success); + + vports = lpfc_create_vport_work_array(phba); + if (vports != NULL) +@@ -417,8 +417,8 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) + } + } + lpfc_destroy_vport_work_array(phba, vports); +- atomic_set(&phba->num_rsrc_err, 0); +- atomic_set(&phba->num_cmd_success, 0); ++ atomic_set_unchecked(&phba->num_rsrc_err, 0); ++ atomic_set_unchecked(&phba->num_cmd_success, 0); + } + + /** +@@ -452,8 +452,8 @@ lpfc_ramp_up_queue_handler(struct lpfc_hba *phba) + } + } + lpfc_destroy_vport_work_array(phba, vports); +- atomic_set(&phba->num_rsrc_err, 0); +- atomic_set(&phba->num_cmd_success, 0); ++ atomic_set_unchecked(&phba->num_rsrc_err, 0); ++ atomic_set_unchecked(&phba->num_cmd_success, 0); + } + + /** +diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c +index ea8a0b4..812a124 100644 +--- a/drivers/scsi/pmcraid.c ++++ b/drivers/scsi/pmcraid.c +@@ -200,8 +200,8 @@ static int pmcraid_slave_alloc(struct scsi_device *scsi_dev) + res->scsi_dev = scsi_dev; + scsi_dev->hostdata = res; + res->change_detected = 0; +- atomic_set(&res->read_failures, 0); +- atomic_set(&res->write_failures, 0); ++ atomic_set_unchecked(&res->read_failures, 0); ++ atomic_set_unchecked(&res->write_failures, 0); + rc = 0; + } + spin_unlock_irqrestore(&pinstance->resource_lock, lock_flags); +@@ -2676,9 +2676,9 @@ static int pmcraid_error_handler(struct pmcraid_cmd *cmd) + + /* If this was a SCSI read/write command keep count of errors */ + if (SCSI_CMD_TYPE(scsi_cmd->cmnd[0]) == SCSI_READ_CMD) +- atomic_inc(&res->read_failures); ++ atomic_inc_unchecked(&res->read_failures); + else if (SCSI_CMD_TYPE(scsi_cmd->cmnd[0]) == SCSI_WRITE_CMD) +- atomic_inc(&res->write_failures); ++ atomic_inc_unchecked(&res->write_failures); + + if (!RES_IS_GSCSI(res->cfg_entry) && + masked_ioasc != PMCRAID_IOASC_HW_DEVICE_BUS_STATUS_ERROR) { +@@ -3534,7 +3534,7 @@ static int pmcraid_queuecommand_lck( + * block of scsi_cmd which is re-used (e.g. cancel/abort), which uses + * hrrq_id assigned here in queuecommand + */ +- ioarcb->hrrq_id = atomic_add_return(1, &(pinstance->last_message_id)) % ++ ioarcb->hrrq_id = atomic_add_return_unchecked(1, &(pinstance->last_message_id)) % + pinstance->num_hrrq; + cmd->cmd_done = pmcraid_io_done; + +@@ -3859,7 +3859,7 @@ static long pmcraid_ioctl_passthrough( + * block of scsi_cmd which is re-used (e.g. cancel/abort), which uses + * hrrq_id assigned here in queuecommand + */ +- ioarcb->hrrq_id = atomic_add_return(1, &(pinstance->last_message_id)) % ++ ioarcb->hrrq_id = atomic_add_return_unchecked(1, &(pinstance->last_message_id)) % + pinstance->num_hrrq; + + if (request_size) { +@@ -4497,7 +4497,7 @@ static void pmcraid_worker_function(struct work_struct *workp) + + pinstance = container_of(workp, struct pmcraid_instance, worker_q); + /* add resources only after host is added into system */ +- if (!atomic_read(&pinstance->expose_resources)) ++ if (!atomic_read_unchecked(&pinstance->expose_resources)) + return; + + fw_version = be16_to_cpu(pinstance->inq_data->fw_version); +@@ -5331,8 +5331,8 @@ static int __devinit pmcraid_init_instance( + init_waitqueue_head(&pinstance->reset_wait_q); + + atomic_set(&pinstance->outstanding_cmds, 0); +- atomic_set(&pinstance->last_message_id, 0); +- atomic_set(&pinstance->expose_resources, 0); ++ atomic_set_unchecked(&pinstance->last_message_id, 0); ++ atomic_set_unchecked(&pinstance->expose_resources, 0); + + INIT_LIST_HEAD(&pinstance->free_res_q); + INIT_LIST_HEAD(&pinstance->used_res_q); +@@ -6047,7 +6047,7 @@ static int __devinit pmcraid_probe( + /* Schedule worker thread to handle CCN and take care of adding and + * removing devices to OS + */ +- atomic_set(&pinstance->expose_resources, 1); ++ atomic_set_unchecked(&pinstance->expose_resources, 1); + schedule_work(&pinstance->worker_q); + return rc; + +diff --git a/drivers/scsi/pmcraid.h b/drivers/scsi/pmcraid.h +index e1d150f..6c6df44 100644 +--- a/drivers/scsi/pmcraid.h ++++ b/drivers/scsi/pmcraid.h +@@ -748,7 +748,7 @@ struct pmcraid_instance { + struct pmcraid_isr_param hrrq_vector[PMCRAID_NUM_MSIX_VECTORS]; + + /* Message id as filled in last fired IOARCB, used to identify HRRQ */ +- atomic_t last_message_id; ++ atomic_unchecked_t last_message_id; + + /* configuration table */ + struct pmcraid_config_table *cfg_table; +@@ -777,7 +777,7 @@ struct pmcraid_instance { + atomic_t outstanding_cmds; + + /* should add/delete resources to mid-layer now ?*/ +- atomic_t expose_resources; ++ atomic_unchecked_t expose_resources; + + + +@@ -813,8 +813,8 @@ struct pmcraid_resource_entry { + struct pmcraid_config_table_entry_ext cfg_entry_ext; + }; + struct scsi_device *scsi_dev; /* Link scsi_device structure */ +- atomic_t read_failures; /* count of failed READ commands */ +- atomic_t write_failures; /* count of failed WRITE commands */ ++ atomic_unchecked_t read_failures; /* count of failed READ commands */ ++ atomic_unchecked_t write_failures; /* count of failed WRITE commands */ + + /* To indicate add/delete/modify during CCN */ + u8 change_detected; +diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h +index a244303..6015eb7 100644 +--- a/drivers/scsi/qla2xxx/qla_def.h ++++ b/drivers/scsi/qla2xxx/qla_def.h +@@ -2264,7 +2264,7 @@ struct isp_operations { + int (*start_scsi) (srb_t *); + int (*abort_isp) (struct scsi_qla_host *); + int (*iospace_config)(struct qla_hw_data*); +-}; ++} __no_const; + + /* MSI-X Support *************************************************************/ + +diff --git a/drivers/scsi/qla4xxx/ql4_def.h b/drivers/scsi/qla4xxx/ql4_def.h +index 7f2492e..5113877 100644 +--- a/drivers/scsi/qla4xxx/ql4_def.h ++++ b/drivers/scsi/qla4xxx/ql4_def.h +@@ -268,7 +268,7 @@ struct ddb_entry { + * (4000 only) */ + atomic_t relogin_timer; /* Max Time to wait for + * relogin to complete */ +- atomic_t relogin_retry_count; /* Num of times relogin has been ++ atomic_unchecked_t relogin_retry_count; /* Num of times relogin has been + * retried */ + uint32_t default_time2wait; /* Default Min time between + * relogins (+aens) */ +diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c +index ee47820..a83b1f4 100644 +--- a/drivers/scsi/qla4xxx/ql4_os.c ++++ b/drivers/scsi/qla4xxx/ql4_os.c +@@ -2551,12 +2551,12 @@ static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess) + */ + if (!iscsi_is_session_online(cls_sess)) { + /* Reset retry relogin timer */ +- atomic_inc(&ddb_entry->relogin_retry_count); ++ atomic_inc_unchecked(&ddb_entry->relogin_retry_count); + DEBUG2(ql4_printk(KERN_INFO, ha, + "%s: index[%d] relogin timed out-retrying" + " relogin (%d), retry (%d)\n", __func__, + ddb_entry->fw_ddb_index, +- atomic_read(&ddb_entry->relogin_retry_count), ++ atomic_read_unchecked(&ddb_entry->relogin_retry_count), + ddb_entry->default_time2wait + 4)); + set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags); + atomic_set(&ddb_entry->retry_relogin_timer, +@@ -4453,7 +4453,7 @@ static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha, + + atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY); + atomic_set(&ddb_entry->relogin_timer, 0); +- atomic_set(&ddb_entry->relogin_retry_count, 0); ++ atomic_set_unchecked(&ddb_entry->relogin_retry_count, 0); + def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout); + ddb_entry->default_relogin_timeout = + (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ? +diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c +index 07322ec..91ccc23 100644 +--- a/drivers/scsi/scsi.c ++++ b/drivers/scsi/scsi.c +@@ -655,7 +655,7 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd) + unsigned long timeout; + int rtn = 0; + +- atomic_inc(&cmd->device->iorequest_cnt); ++ atomic_inc_unchecked(&cmd->device->iorequest_cnt); + + /* check if the device is still usable */ + if (unlikely(cmd->device->sdev_state == SDEV_DEL)) { +diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c +index 4037fd5..a19fcc7 100644 +--- a/drivers/scsi/scsi_lib.c ++++ b/drivers/scsi/scsi_lib.c +@@ -1415,7 +1415,7 @@ static void scsi_kill_request(struct request *req, struct request_queue *q) + shost = sdev->host; + scsi_init_cmd_errh(cmd); + cmd->result = DID_NO_CONNECT << 16; +- atomic_inc(&cmd->device->iorequest_cnt); ++ atomic_inc_unchecked(&cmd->device->iorequest_cnt); + + /* + * SCSI request completion path will do scsi_device_unbusy(), +@@ -1441,9 +1441,9 @@ static void scsi_softirq_done(struct request *rq) + + INIT_LIST_HEAD(&cmd->eh_entry); + +- atomic_inc(&cmd->device->iodone_cnt); ++ atomic_inc_unchecked(&cmd->device->iodone_cnt); + if (cmd->result) +- atomic_inc(&cmd->device->ioerr_cnt); ++ atomic_inc_unchecked(&cmd->device->ioerr_cnt); + + disposition = scsi_decide_disposition(cmd); + if (disposition != SUCCESS && +diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c +index 04c2a27..9d8bd66 100644 +--- a/drivers/scsi/scsi_sysfs.c ++++ b/drivers/scsi/scsi_sysfs.c +@@ -660,7 +660,7 @@ show_iostat_##field(struct device *dev, struct device_attribute *attr, \ + char *buf) \ + { \ + struct scsi_device *sdev = to_scsi_device(dev); \ +- unsigned long long count = atomic_read(&sdev->field); \ ++ unsigned long long count = atomic_read_unchecked(&sdev->field); \ + return snprintf(buf, 20, "0x%llx\n", count); \ + } \ + static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL) +diff --git a/drivers/scsi/scsi_tgt_lib.c b/drivers/scsi/scsi_tgt_lib.c +index 84a1fdf..693b0d6 100644 +--- a/drivers/scsi/scsi_tgt_lib.c ++++ b/drivers/scsi/scsi_tgt_lib.c +@@ -362,7 +362,7 @@ static int scsi_map_user_pages(struct scsi_tgt_cmd *tcmd, struct scsi_cmnd *cmd, + int err; + + dprintk("%lx %u\n", uaddr, len); +- err = blk_rq_map_user(q, rq, NULL, (void *)uaddr, len, GFP_KERNEL); ++ err = blk_rq_map_user(q, rq, NULL, (void __user *)uaddr, len, GFP_KERNEL); + if (err) { + /* + * TODO: need to fixup sg_tablesize, max_segment_size, +diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c +index 80fbe2a..efa223b 100644 +--- a/drivers/scsi/scsi_transport_fc.c ++++ b/drivers/scsi/scsi_transport_fc.c +@@ -498,7 +498,7 @@ static DECLARE_TRANSPORT_CLASS(fc_vport_class, + * Netlink Infrastructure + */ + +-static atomic_t fc_event_seq; ++static atomic_unchecked_t fc_event_seq; + + /** + * fc_get_event_number - Obtain the next sequential FC event number +@@ -511,7 +511,7 @@ static atomic_t fc_event_seq; + u32 + fc_get_event_number(void) + { +- return atomic_add_return(1, &fc_event_seq); ++ return atomic_add_return_unchecked(1, &fc_event_seq); + } + EXPORT_SYMBOL(fc_get_event_number); + +@@ -659,7 +659,7 @@ static __init int fc_transport_init(void) + { + int error; + +- atomic_set(&fc_event_seq, 0); ++ atomic_set_unchecked(&fc_event_seq, 0); + + error = transport_class_register(&fc_host_class); + if (error) +@@ -849,7 +849,7 @@ static int fc_str_to_dev_loss(const char *buf, unsigned long *val) + char *cp; + + *val = simple_strtoul(buf, &cp, 0); +- if ((*cp && (*cp != '\n')) || (*val < 0)) ++ if (*cp && (*cp != '\n')) + return -EINVAL; + /* + * Check for overflow; dev_loss_tmo is u32 +diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c +index 1cf640e..78e9014 100644 +--- a/drivers/scsi/scsi_transport_iscsi.c ++++ b/drivers/scsi/scsi_transport_iscsi.c +@@ -79,7 +79,7 @@ struct iscsi_internal { + struct transport_container session_cont; + }; + +-static atomic_t iscsi_session_nr; /* sysfs session id for next new session */ ++static atomic_unchecked_t iscsi_session_nr; /* sysfs session id for next new session */ + static struct workqueue_struct *iscsi_eh_timer_workq; + + static DEFINE_IDA(iscsi_sess_ida); +@@ -1064,7 +1064,7 @@ int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id) + int err; + + ihost = shost->shost_data; +- session->sid = atomic_add_return(1, &iscsi_session_nr); ++ session->sid = atomic_add_return_unchecked(1, &iscsi_session_nr); + + if (target_id == ISCSI_MAX_TARGET) { + id = ida_simple_get(&iscsi_sess_ida, 0, 0, GFP_KERNEL); +@@ -2940,7 +2940,7 @@ static __init int iscsi_transport_init(void) + printk(KERN_INFO "Loading iSCSI transport class v%s.\n", + ISCSI_TRANSPORT_VERSION); + +- atomic_set(&iscsi_session_nr, 0); ++ atomic_set_unchecked(&iscsi_session_nr, 0); + + err = class_register(&iscsi_transport_class); + if (err) +diff --git a/drivers/scsi/scsi_transport_srp.c b/drivers/scsi/scsi_transport_srp.c +index 21a045e..ec89e03 100644 +--- a/drivers/scsi/scsi_transport_srp.c ++++ b/drivers/scsi/scsi_transport_srp.c +@@ -33,7 +33,7 @@ + #include "scsi_transport_srp_internal.h" + + struct srp_host_attrs { +- atomic_t next_port_id; ++ atomic_unchecked_t next_port_id; + }; + #define to_srp_host_attrs(host) ((struct srp_host_attrs *)(host)->shost_data) + +@@ -62,7 +62,7 @@ static int srp_host_setup(struct transport_container *tc, struct device *dev, + struct Scsi_Host *shost = dev_to_shost(dev); + struct srp_host_attrs *srp_host = to_srp_host_attrs(shost); + +- atomic_set(&srp_host->next_port_id, 0); ++ atomic_set_unchecked(&srp_host->next_port_id, 0); + return 0; + } + +@@ -211,7 +211,7 @@ struct srp_rport *srp_rport_add(struct Scsi_Host *shost, + memcpy(rport->port_id, ids->port_id, sizeof(rport->port_id)); + rport->roles = ids->roles; + +- id = atomic_inc_return(&to_srp_host_attrs(shost)->next_port_id); ++ id = atomic_inc_return_unchecked(&to_srp_host_attrs(shost)->next_port_id); + dev_set_name(&rport->dev, "port-%d:%d", shost->host_no, id); + + transport_setup_device(&rport->dev); +diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c +index eacd46b..e3f4d62 100644 +--- a/drivers/scsi/sg.c ++++ b/drivers/scsi/sg.c +@@ -1077,7 +1077,7 @@ sg_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg) + sdp->disk->disk_name, + MKDEV(SCSI_GENERIC_MAJOR, sdp->index), + NULL, +- (char *)arg); ++ (char __user *)arg); + case BLKTRACESTART: + return blk_trace_startstop(sdp->device->request_queue, 1); + case BLKTRACESTOP: +@@ -2312,7 +2312,7 @@ struct sg_proc_leaf { + const struct file_operations * fops; + }; + +-static struct sg_proc_leaf sg_proc_leaf_arr[] = { ++static const struct sg_proc_leaf sg_proc_leaf_arr[] = { + {"allow_dio", &adio_fops}, + {"debug", &debug_fops}, + {"def_reserved_size", &dressz_fops}, +@@ -2332,7 +2332,7 @@ sg_proc_init(void) + if (!sg_proc_sgp) + return 1; + for (k = 0; k < num_leaves; ++k) { +- struct sg_proc_leaf *leaf = &sg_proc_leaf_arr[k]; ++ const struct sg_proc_leaf *leaf = &sg_proc_leaf_arr[k]; + umode_t mask = leaf->fops->write ? S_IRUGO | S_IWUSR : S_IRUGO; + proc_create(leaf->name, mask, sg_proc_sgp, leaf->fops); + } +diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c +index 3d8f662..070f1a5 100644 +--- a/drivers/spi/spi.c ++++ b/drivers/spi/spi.c +@@ -1361,7 +1361,7 @@ int spi_bus_unlock(struct spi_master *master) + EXPORT_SYMBOL_GPL(spi_bus_unlock); + + /* portable code must never pass more than 32 bytes */ +-#define SPI_BUFSIZ max(32,SMP_CACHE_BYTES) ++#define SPI_BUFSIZ max(32UL,SMP_CACHE_BYTES) + + static u8 *buf; + +diff --git a/drivers/staging/octeon/ethernet-rx.c b/drivers/staging/octeon/ethernet-rx.c +index d91751f..a3a9e36 100644 +--- a/drivers/staging/octeon/ethernet-rx.c ++++ b/drivers/staging/octeon/ethernet-rx.c +@@ -421,11 +421,11 @@ static int cvm_oct_napi_poll(struct napi_struct *napi, int budget) + /* Increment RX stats for virtual ports */ + if (work->ipprt >= CVMX_PIP_NUM_INPUT_PORTS) { + #ifdef CONFIG_64BIT +- atomic64_add(1, (atomic64_t *)&priv->stats.rx_packets); +- atomic64_add(skb->len, (atomic64_t *)&priv->stats.rx_bytes); ++ atomic64_add_unchecked(1, (atomic64_unchecked_t *)&priv->stats.rx_packets); ++ atomic64_add_unchecked(skb->len, (atomic64_unchecked_t *)&priv->stats.rx_bytes); + #else +- atomic_add(1, (atomic_t *)&priv->stats.rx_packets); +- atomic_add(skb->len, (atomic_t *)&priv->stats.rx_bytes); ++ atomic_add_unchecked(1, (atomic_unchecked_t *)&priv->stats.rx_packets); ++ atomic_add_unchecked(skb->len, (atomic_unchecked_t *)&priv->stats.rx_bytes); + #endif + } + netif_receive_skb(skb); +@@ -437,9 +437,9 @@ static int cvm_oct_napi_poll(struct napi_struct *napi, int budget) + dev->name); + */ + #ifdef CONFIG_64BIT +- atomic64_add(1, (atomic64_t *)&priv->stats.rx_dropped); ++ atomic64_unchecked_add(1, (atomic64_unchecked_t *)&priv->stats.rx_dropped); + #else +- atomic_add(1, (atomic_t *)&priv->stats.rx_dropped); ++ atomic_add_unchecked(1, (atomic_unchecked_t *)&priv->stats.rx_dropped); + #endif + dev_kfree_skb_irq(skb); + } +diff --git a/drivers/staging/octeon/ethernet.c b/drivers/staging/octeon/ethernet.c +index 60cba81..71eb239 100644 +--- a/drivers/staging/octeon/ethernet.c ++++ b/drivers/staging/octeon/ethernet.c +@@ -259,11 +259,11 @@ static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev) + * since the RX tasklet also increments it. + */ + #ifdef CONFIG_64BIT +- atomic64_add(rx_status.dropped_packets, +- (atomic64_t *)&priv->stats.rx_dropped); ++ atomic64_add_unchecked(rx_status.dropped_packets, ++ (atomic64_unchecked_t *)&priv->stats.rx_dropped); + #else +- atomic_add(rx_status.dropped_packets, +- (atomic_t *)&priv->stats.rx_dropped); ++ atomic_add_unchecked(rx_status.dropped_packets, ++ (atomic_unchecked_t *)&priv->stats.rx_dropped); + #endif + } + +diff --git a/drivers/staging/rtl8712/rtl871x_io.h b/drivers/staging/rtl8712/rtl871x_io.h +index d3d8727..f9327bb8 100644 +--- a/drivers/staging/rtl8712/rtl871x_io.h ++++ b/drivers/staging/rtl8712/rtl871x_io.h +@@ -108,7 +108,7 @@ struct _io_ops { + u8 *pmem); + u32 (*_write_port)(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, + u8 *pmem); +-}; ++} __no_const; + + struct io_req { + struct list_head list; +diff --git a/drivers/staging/sbe-2t3e3/netdev.c b/drivers/staging/sbe-2t3e3/netdev.c +index c7b5e8b..783d6cb 100644 +--- a/drivers/staging/sbe-2t3e3/netdev.c ++++ b/drivers/staging/sbe-2t3e3/netdev.c +@@ -51,7 +51,7 @@ int t3e3_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) + t3e3_if_config(sc, cmd_2t3e3, (char *)¶m, &resp, &rlen); + + if (rlen) +- if (copy_to_user(data, &resp, rlen)) ++ if (rlen > sizeof resp || copy_to_user(data, &resp, rlen)) + return -EFAULT; + + return 0; +diff --git a/drivers/staging/speakup/speakup_soft.c b/drivers/staging/speakup/speakup_soft.c +index 42cdafe..2769103 100644 +--- a/drivers/staging/speakup/speakup_soft.c ++++ b/drivers/staging/speakup/speakup_soft.c +@@ -241,11 +241,11 @@ static ssize_t softsynth_read(struct file *fp, char *buf, size_t count, + break; + } else if (!initialized) { + if (*init) { +- ch = *init; + init++; + } else { + initialized = 1; + } ++ ch = *init; + } else { + ch = synth_buffer_getc(); + } +diff --git a/drivers/staging/usbip/usbip_common.h b/drivers/staging/usbip/usbip_common.h +index c7b888c..c94be93 100644 +--- a/drivers/staging/usbip/usbip_common.h ++++ b/drivers/staging/usbip/usbip_common.h +@@ -289,7 +289,7 @@ struct usbip_device { + void (*shutdown)(struct usbip_device *); + void (*reset)(struct usbip_device *); + void (*unusable)(struct usbip_device *); +- } eh_ops; ++ } __no_const eh_ops; + }; + + /* usbip_common.c */ +diff --git a/drivers/staging/usbip/vhci.h b/drivers/staging/usbip/vhci.h +index 88b3298..3783eee 100644 +--- a/drivers/staging/usbip/vhci.h ++++ b/drivers/staging/usbip/vhci.h +@@ -88,7 +88,7 @@ struct vhci_hcd { + unsigned resuming:1; + unsigned long re_timeout; + +- atomic_t seqnum; ++ atomic_unchecked_t seqnum; + + /* + * NOTE: +diff --git a/drivers/staging/usbip/vhci_hcd.c b/drivers/staging/usbip/vhci_hcd.c +index dca9bf1..80735c9 100644 +--- a/drivers/staging/usbip/vhci_hcd.c ++++ b/drivers/staging/usbip/vhci_hcd.c +@@ -488,7 +488,7 @@ static void vhci_tx_urb(struct urb *urb) + return; + } + +- priv->seqnum = atomic_inc_return(&the_controller->seqnum); ++ priv->seqnum = atomic_inc_return_unchecked(&the_controller->seqnum); + if (priv->seqnum == 0xffff) + dev_info(&urb->dev->dev, "seqnum max\n"); + +@@ -740,7 +740,7 @@ static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) + return -ENOMEM; + } + +- unlink->seqnum = atomic_inc_return(&the_controller->seqnum); ++ unlink->seqnum = atomic_inc_return_unchecked(&the_controller->seqnum); + if (unlink->seqnum == 0xffff) + pr_info("seqnum max\n"); + +@@ -928,7 +928,7 @@ static int vhci_start(struct usb_hcd *hcd) + vdev->rhport = rhport; + } + +- atomic_set(&vhci->seqnum, 0); ++ atomic_set_unchecked(&vhci->seqnum, 0); + spin_lock_init(&vhci->lock); + + hcd->power_budget = 0; /* no limit */ +diff --git a/drivers/staging/usbip/vhci_rx.c b/drivers/staging/usbip/vhci_rx.c +index f5fba732..210a16c 100644 +--- a/drivers/staging/usbip/vhci_rx.c ++++ b/drivers/staging/usbip/vhci_rx.c +@@ -77,7 +77,7 @@ static void vhci_recv_ret_submit(struct vhci_device *vdev, + if (!urb) { + pr_err("cannot find a urb of seqnum %u\n", pdu->base.seqnum); + pr_info("max seqnum %d\n", +- atomic_read(&the_controller->seqnum)); ++ atomic_read_unchecked(&the_controller->seqnum)); + usbip_event_add(ud, VDEV_EVENT_ERROR_TCP); + return; + } +diff --git a/drivers/staging/vt6655/hostap.c b/drivers/staging/vt6655/hostap.c +index 7735027..30eed13 100644 +--- a/drivers/staging/vt6655/hostap.c ++++ b/drivers/staging/vt6655/hostap.c +@@ -79,14 +79,13 @@ static int msglevel =MSG_LEVEL_INFO; + * + */ + ++static net_device_ops_no_const apdev_netdev_ops; ++ + static int hostap_enable_hostapd(PSDevice pDevice, int rtnl_locked) + { + PSDevice apdev_priv; + struct net_device *dev = pDevice->dev; + int ret; +- const struct net_device_ops apdev_netdev_ops = { +- .ndo_start_xmit = pDevice->tx_80211, +- }; + + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "%s: Enabling hostapd mode\n", dev->name); + +@@ -98,6 +97,8 @@ static int hostap_enable_hostapd(PSDevice pDevice, int rtnl_locked) + *apdev_priv = *pDevice; + memcpy(pDevice->apdev->dev_addr, dev->dev_addr, ETH_ALEN); + ++ /* only half broken now */ ++ apdev_netdev_ops.ndo_start_xmit = pDevice->tx_80211; + pDevice->apdev->netdev_ops = &apdev_netdev_ops; + + pDevice->apdev->type = ARPHRD_IEEE80211; +diff --git a/drivers/staging/vt6656/hostap.c b/drivers/staging/vt6656/hostap.c +index 51b5adf..098e320 100644 +--- a/drivers/staging/vt6656/hostap.c ++++ b/drivers/staging/vt6656/hostap.c +@@ -80,14 +80,13 @@ static int msglevel =MSG_LEVEL_INFO; + * + */ + ++static net_device_ops_no_const apdev_netdev_ops; ++ + static int hostap_enable_hostapd(PSDevice pDevice, int rtnl_locked) + { + PSDevice apdev_priv; + struct net_device *dev = pDevice->dev; + int ret; +- const struct net_device_ops apdev_netdev_ops = { +- .ndo_start_xmit = pDevice->tx_80211, +- }; + + DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "%s: Enabling hostapd mode\n", dev->name); + +@@ -99,6 +98,8 @@ static int hostap_enable_hostapd(PSDevice pDevice, int rtnl_locked) + *apdev_priv = *pDevice; + memcpy(pDevice->apdev->dev_addr, dev->dev_addr, ETH_ALEN); + ++ /* only half broken now */ ++ apdev_netdev_ops.ndo_start_xmit = pDevice->tx_80211; + pDevice->apdev->netdev_ops = &apdev_netdev_ops; + + pDevice->apdev->type = ARPHRD_IEEE80211; +diff --git a/drivers/staging/wlan-ng/hfa384x_usb.c b/drivers/staging/wlan-ng/hfa384x_usb.c +index 7843dfd..3db105f 100644 +--- a/drivers/staging/wlan-ng/hfa384x_usb.c ++++ b/drivers/staging/wlan-ng/hfa384x_usb.c +@@ -204,7 +204,7 @@ static void unlocked_usbctlx_complete(hfa384x_t *hw, hfa384x_usbctlx_t *ctlx); + + struct usbctlx_completor { + int (*complete) (struct usbctlx_completor *); +-}; ++} __no_const; + + static int + hfa384x_usbctlx_complete_sync(hfa384x_t *hw, +diff --git a/drivers/staging/zcache/tmem.c b/drivers/staging/zcache/tmem.c +index 1ca66ea..76f1343 100644 +--- a/drivers/staging/zcache/tmem.c ++++ b/drivers/staging/zcache/tmem.c +@@ -39,7 +39,7 @@ + * A tmem host implementation must use this function to register callbacks + * for memory allocation. + */ +-static struct tmem_hostops tmem_hostops; ++static tmem_hostops_no_const tmem_hostops; + + static void tmem_objnode_tree_init(void); + +@@ -53,7 +53,7 @@ void tmem_register_hostops(struct tmem_hostops *m) + * A tmem host implementation must use this function to register + * callbacks for a page-accessible memory (PAM) implementation + */ +-static struct tmem_pamops tmem_pamops; ++static tmem_pamops_no_const tmem_pamops; + + void tmem_register_pamops(struct tmem_pamops *m) + { +diff --git a/drivers/staging/zcache/tmem.h b/drivers/staging/zcache/tmem.h +index 0d4aa82..f7832d4 100644 +--- a/drivers/staging/zcache/tmem.h ++++ b/drivers/staging/zcache/tmem.h +@@ -180,6 +180,7 @@ struct tmem_pamops { + void (*new_obj)(struct tmem_obj *); + int (*replace_in_obj)(void *, struct tmem_obj *); + }; ++typedef struct tmem_pamops __no_const tmem_pamops_no_const; + extern void tmem_register_pamops(struct tmem_pamops *m); + + /* memory allocation methods provided by the host implementation */ +@@ -189,6 +190,7 @@ struct tmem_hostops { + struct tmem_objnode *(*objnode_alloc)(struct tmem_pool *); + void (*objnode_free)(struct tmem_objnode *, struct tmem_pool *); + }; ++typedef struct tmem_hostops __no_const tmem_hostops_no_const; + extern void tmem_register_hostops(struct tmem_hostops *m); + + /* core tmem accessor functions */ +diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c +index f015839..b15dfc4 100644 +--- a/drivers/target/target_core_tmr.c ++++ b/drivers/target/target_core_tmr.c +@@ -327,7 +327,7 @@ static void core_tmr_drain_task_list( + cmd->se_tfo->get_task_tag(cmd), cmd->pr_res_key, + cmd->t_task_list_num, + atomic_read(&cmd->t_task_cdbs_left), +- atomic_read(&cmd->t_task_cdbs_sent), ++ atomic_read_unchecked(&cmd->t_task_cdbs_sent), + (cmd->transport_state & CMD_T_ACTIVE) != 0, + (cmd->transport_state & CMD_T_STOP) != 0, + (cmd->transport_state & CMD_T_SENT) != 0); +diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c +index 443704f..92d3517 100644 +--- a/drivers/target/target_core_transport.c ++++ b/drivers/target/target_core_transport.c +@@ -1355,7 +1355,7 @@ struct se_device *transport_add_device_to_core_hba( + spin_lock_init(&dev->se_port_lock); + spin_lock_init(&dev->se_tmr_lock); + spin_lock_init(&dev->qf_cmd_lock); +- atomic_set(&dev->dev_ordered_id, 0); ++ atomic_set_unchecked(&dev->dev_ordered_id, 0); + + se_dev_set_default_attribs(dev, dev_limits); + +@@ -1542,7 +1542,7 @@ static int transport_check_alloc_task_attr(struct se_cmd *cmd) + * Used to determine when ORDERED commands should go from + * Dormant to Active status. + */ +- cmd->se_ordered_id = atomic_inc_return(&cmd->se_dev->dev_ordered_id); ++ cmd->se_ordered_id = atomic_inc_return_unchecked(&cmd->se_dev->dev_ordered_id); + smp_mb__after_atomic_inc(); + pr_debug("Allocated se_ordered_id: %u for Task Attr: 0x%02x on %s\n", + cmd->se_ordered_id, cmd->sam_task_attr, +@@ -1956,7 +1956,7 @@ void transport_generic_request_failure(struct se_cmd *cmd) + " CMD_T_ACTIVE: %d CMD_T_STOP: %d CMD_T_SENT: %d\n", + cmd->t_task_list_num, + atomic_read(&cmd->t_task_cdbs_left), +- atomic_read(&cmd->t_task_cdbs_sent), ++ atomic_read_unchecked(&cmd->t_task_cdbs_sent), + atomic_read(&cmd->t_task_cdbs_ex_left), + (cmd->transport_state & CMD_T_ACTIVE) != 0, + (cmd->transport_state & CMD_T_STOP) != 0, +@@ -2216,9 +2216,9 @@ check_depth: + cmd = task->task_se_cmd; + spin_lock_irqsave(&cmd->t_state_lock, flags); + task->task_flags |= (TF_ACTIVE | TF_SENT); +- atomic_inc(&cmd->t_task_cdbs_sent); ++ atomic_inc_unchecked(&cmd->t_task_cdbs_sent); + +- if (atomic_read(&cmd->t_task_cdbs_sent) == ++ if (atomic_read_unchecked(&cmd->t_task_cdbs_sent) == + cmd->t_task_list_num) + cmd->transport_state |= CMD_T_SENT; + +diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c +index 3436436..772237b 100644 +--- a/drivers/tty/hvc/hvcs.c ++++ b/drivers/tty/hvc/hvcs.c +@@ -83,6 +83,7 @@ + #include <asm/hvcserver.h> + #include <asm/uaccess.h> + #include <asm/vio.h> ++#include <asm/local.h> + + /* + * 1.3.0 -> 1.3.1 In hvcs_open memset(..,0x00,..) instead of memset(..,0x3F,00). +@@ -270,7 +271,7 @@ struct hvcs_struct { + unsigned int index; + + struct tty_struct *tty; +- int open_count; ++ local_t open_count; + + /* + * Used to tell the driver kernel_thread what operations need to take +@@ -422,7 +423,7 @@ static ssize_t hvcs_vterm_state_store(struct device *dev, struct device_attribut + + spin_lock_irqsave(&hvcsd->lock, flags); + +- if (hvcsd->open_count > 0) { ++ if (local_read(&hvcsd->open_count) > 0) { + spin_unlock_irqrestore(&hvcsd->lock, flags); + printk(KERN_INFO "HVCS: vterm state unchanged. " + "The hvcs device node is still in use.\n"); +@@ -1138,7 +1139,7 @@ static int hvcs_open(struct tty_struct *tty, struct file *filp) + if ((retval = hvcs_partner_connect(hvcsd))) + goto error_release; + +- hvcsd->open_count = 1; ++ local_set(&hvcsd->open_count, 1); + hvcsd->tty = tty; + tty->driver_data = hvcsd; + +@@ -1172,7 +1173,7 @@ fast_open: + + spin_lock_irqsave(&hvcsd->lock, flags); + kref_get(&hvcsd->kref); +- hvcsd->open_count++; ++ local_inc(&hvcsd->open_count); + hvcsd->todo_mask |= HVCS_SCHED_READ; + spin_unlock_irqrestore(&hvcsd->lock, flags); + +@@ -1216,7 +1217,7 @@ static void hvcs_close(struct tty_struct *tty, struct file *filp) + hvcsd = tty->driver_data; + + spin_lock_irqsave(&hvcsd->lock, flags); +- if (--hvcsd->open_count == 0) { ++ if (local_dec_and_test(&hvcsd->open_count)) { + + vio_disable_interrupts(hvcsd->vdev); + +@@ -1242,10 +1243,10 @@ static void hvcs_close(struct tty_struct *tty, struct file *filp) + free_irq(irq, hvcsd); + kref_put(&hvcsd->kref, destroy_hvcs_struct); + return; +- } else if (hvcsd->open_count < 0) { ++ } else if (local_read(&hvcsd->open_count) < 0) { + printk(KERN_ERR "HVCS: vty-server@%X open_count: %d" + " is missmanaged.\n", +- hvcsd->vdev->unit_address, hvcsd->open_count); ++ hvcsd->vdev->unit_address, local_read(&hvcsd->open_count)); + } + + spin_unlock_irqrestore(&hvcsd->lock, flags); +@@ -1261,7 +1262,7 @@ static void hvcs_hangup(struct tty_struct * tty) + + spin_lock_irqsave(&hvcsd->lock, flags); + /* Preserve this so that we know how many kref refs to put */ +- temp_open_count = hvcsd->open_count; ++ temp_open_count = local_read(&hvcsd->open_count); + + /* + * Don't kref put inside the spinlock because the destruction +@@ -1276,7 +1277,7 @@ static void hvcs_hangup(struct tty_struct * tty) + hvcsd->tty->driver_data = NULL; + hvcsd->tty = NULL; + +- hvcsd->open_count = 0; ++ local_set(&hvcsd->open_count, 0); + + /* This will drop any buffered data on the floor which is OK in a hangup + * scenario. */ +@@ -1347,7 +1348,7 @@ static int hvcs_write(struct tty_struct *tty, + * the middle of a write operation? This is a crummy place to do this + * but we want to keep it all in the spinlock. + */ +- if (hvcsd->open_count <= 0) { ++ if (local_read(&hvcsd->open_count) <= 0) { + spin_unlock_irqrestore(&hvcsd->lock, flags); + return -ENODEV; + } +@@ -1421,7 +1422,7 @@ static int hvcs_write_room(struct tty_struct *tty) + { + struct hvcs_struct *hvcsd = tty->driver_data; + +- if (!hvcsd || hvcsd->open_count <= 0) ++ if (!hvcsd || local_read(&hvcsd->open_count) <= 0) + return 0; + + return HVCS_BUFF_LEN - hvcsd->chars_in_buffer; +diff --git a/drivers/tty/ipwireless/tty.c b/drivers/tty/ipwireless/tty.c +index 4daf962..b4a2281 100644 +--- a/drivers/tty/ipwireless/tty.c ++++ b/drivers/tty/ipwireless/tty.c +@@ -29,6 +29,7 @@ + #include <linux/tty_driver.h> + #include <linux/tty_flip.h> + #include <linux/uaccess.h> ++#include <asm/local.h> + + #include "tty.h" + #include "network.h" +@@ -51,7 +52,7 @@ struct ipw_tty { + int tty_type; + struct ipw_network *network; + struct tty_struct *linux_tty; +- int open_count; ++ local_t open_count; + unsigned int control_lines; + struct mutex ipw_tty_mutex; + int tx_bytes_queued; +@@ -117,10 +118,10 @@ static int ipw_open(struct tty_struct *linux_tty, struct file *filp) + mutex_unlock(&tty->ipw_tty_mutex); + return -ENODEV; + } +- if (tty->open_count == 0) ++ if (local_read(&tty->open_count) == 0) + tty->tx_bytes_queued = 0; + +- tty->open_count++; ++ local_inc(&tty->open_count); + + tty->linux_tty = linux_tty; + linux_tty->driver_data = tty; +@@ -136,9 +137,7 @@ static int ipw_open(struct tty_struct *linux_tty, struct file *filp) + + static void do_ipw_close(struct ipw_tty *tty) + { +- tty->open_count--; +- +- if (tty->open_count == 0) { ++ if (local_dec_return(&tty->open_count) == 0) { + struct tty_struct *linux_tty = tty->linux_tty; + + if (linux_tty != NULL) { +@@ -159,7 +158,7 @@ static void ipw_hangup(struct tty_struct *linux_tty) + return; + + mutex_lock(&tty->ipw_tty_mutex); +- if (tty->open_count == 0) { ++ if (local_read(&tty->open_count) == 0) { + mutex_unlock(&tty->ipw_tty_mutex); + return; + } +@@ -188,7 +187,7 @@ void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data, + return; + } + +- if (!tty->open_count) { ++ if (!local_read(&tty->open_count)) { + mutex_unlock(&tty->ipw_tty_mutex); + return; + } +@@ -230,7 +229,7 @@ static int ipw_write(struct tty_struct *linux_tty, + return -ENODEV; + + mutex_lock(&tty->ipw_tty_mutex); +- if (!tty->open_count) { ++ if (!local_read(&tty->open_count)) { + mutex_unlock(&tty->ipw_tty_mutex); + return -EINVAL; + } +@@ -270,7 +269,7 @@ static int ipw_write_room(struct tty_struct *linux_tty) + if (!tty) + return -ENODEV; + +- if (!tty->open_count) ++ if (!local_read(&tty->open_count)) + return -EINVAL; + + room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued; +@@ -312,7 +311,7 @@ static int ipw_chars_in_buffer(struct tty_struct *linux_tty) + if (!tty) + return 0; + +- if (!tty->open_count) ++ if (!local_read(&tty->open_count)) + return 0; + + return tty->tx_bytes_queued; +@@ -393,7 +392,7 @@ static int ipw_tiocmget(struct tty_struct *linux_tty) + if (!tty) + return -ENODEV; + +- if (!tty->open_count) ++ if (!local_read(&tty->open_count)) + return -EINVAL; + + return get_control_lines(tty); +@@ -409,7 +408,7 @@ ipw_tiocmset(struct tty_struct *linux_tty, + if (!tty) + return -ENODEV; + +- if (!tty->open_count) ++ if (!local_read(&tty->open_count)) + return -EINVAL; + + return set_control_lines(tty, set, clear); +@@ -423,7 +422,7 @@ static int ipw_ioctl(struct tty_struct *linux_tty, + if (!tty) + return -ENODEV; + +- if (!tty->open_count) ++ if (!local_read(&tty->open_count)) + return -EINVAL; + + /* FIXME: Exactly how is the tty object locked here .. */ +@@ -572,7 +571,7 @@ void ipwireless_tty_free(struct ipw_tty *tty) + against a parallel ioctl etc */ + mutex_lock(&ttyj->ipw_tty_mutex); + } +- while (ttyj->open_count) ++ while (local_read(&ttyj->open_count)) + do_ipw_close(ttyj); + ipwireless_disassociate_network_ttys(network, + ttyj->channel_idx); +diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c +index c43b683..0a88f1c 100644 +--- a/drivers/tty/n_gsm.c ++++ b/drivers/tty/n_gsm.c +@@ -1629,7 +1629,7 @@ static struct gsm_dlci *gsm_dlci_alloc(struct gsm_mux *gsm, int addr) + kref_init(&dlci->ref); + mutex_init(&dlci->mutex); + dlci->fifo = &dlci->_fifo; +- if (kfifo_alloc(&dlci->_fifo, 4096, GFP_KERNEL) < 0) { ++ if (kfifo_alloc(&dlci->_fifo, 4096, GFP_KERNEL)) { + kfree(dlci); + return NULL; + } +diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c +index 94b6eda..15f7cec 100644 +--- a/drivers/tty/n_tty.c ++++ b/drivers/tty/n_tty.c +@@ -2122,6 +2122,7 @@ void n_tty_inherit_ops(struct tty_ldisc_ops *ops) + { + *ops = tty_ldisc_N_TTY; + ops->owner = NULL; +- ops->refcount = ops->flags = 0; ++ atomic_set(&ops->refcount, 0); ++ ops->flags = 0; + } + EXPORT_SYMBOL_GPL(n_tty_inherit_ops); +diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c +index eeae7fa..177a743 100644 +--- a/drivers/tty/pty.c ++++ b/drivers/tty/pty.c +@@ -707,8 +707,10 @@ static void __init unix98_pty_init(void) + panic("Couldn't register Unix98 pts driver"); + + /* Now create the /dev/ptmx special device */ ++ pax_open_kernel(); + tty_default_fops(&ptmx_fops); +- ptmx_fops.open = ptmx_open; ++ *(void **)&ptmx_fops.open = ptmx_open; ++ pax_close_kernel(); + + cdev_init(&ptmx_cdev, &ptmx_fops); + if (cdev_add(&ptmx_cdev, MKDEV(TTYAUX_MAJOR, 2), 1) || +diff --git a/drivers/tty/serial/kgdboc.c b/drivers/tty/serial/kgdboc.c +index 2b42a01..32a2ed3 100644 +--- a/drivers/tty/serial/kgdboc.c ++++ b/drivers/tty/serial/kgdboc.c +@@ -24,8 +24,9 @@ + #define MAX_CONFIG_LEN 40 + + static struct kgdb_io kgdboc_io_ops; ++static struct kgdb_io kgdboc_io_ops_console; + +-/* -1 = init not run yet, 0 = unconfigured, 1 = configured. */ ++/* -1 = init not run yet, 0 = unconfigured, 1/2 = configured. */ + static int configured = -1; + + static char config[MAX_CONFIG_LEN]; +@@ -148,6 +149,8 @@ static void cleanup_kgdboc(void) + kgdboc_unregister_kbd(); + if (configured == 1) + kgdb_unregister_io_module(&kgdboc_io_ops); ++ else if (configured == 2) ++ kgdb_unregister_io_module(&kgdboc_io_ops_console); + } + + static int configure_kgdboc(void) +@@ -157,13 +160,13 @@ static int configure_kgdboc(void) + int err; + char *cptr = config; + struct console *cons; ++ int is_console = 0; + + err = kgdboc_option_setup(config); + if (err || !strlen(config) || isspace(config[0])) + goto noconfig; + + err = -ENODEV; +- kgdboc_io_ops.is_console = 0; + kgdb_tty_driver = NULL; + + kgdboc_use_kms = 0; +@@ -184,7 +187,7 @@ static int configure_kgdboc(void) + int idx; + if (cons->device && cons->device(cons, &idx) == p && + idx == tty_line) { +- kgdboc_io_ops.is_console = 1; ++ is_console = 1; + break; + } + cons = cons->next; +@@ -194,12 +197,16 @@ static int configure_kgdboc(void) + kgdb_tty_line = tty_line; + + do_register: +- err = kgdb_register_io_module(&kgdboc_io_ops); ++ if (is_console) { ++ err = kgdb_register_io_module(&kgdboc_io_ops_console); ++ configured = 2; ++ } else { ++ err = kgdb_register_io_module(&kgdboc_io_ops); ++ configured = 1; ++ } + if (err) + goto noconfig; + +- configured = 1; +- + return 0; + + noconfig: +@@ -213,7 +220,7 @@ noconfig: + static int __init init_kgdboc(void) + { + /* Already configured? */ +- if (configured == 1) ++ if (configured >= 1) + return 0; + + return configure_kgdboc(); +@@ -262,7 +269,7 @@ static int param_set_kgdboc_var(const char *kmessage, struct kernel_param *kp) + if (config[len - 1] == '\n') + config[len - 1] = '\0'; + +- if (configured == 1) ++ if (configured >= 1) + cleanup_kgdboc(); + + /* Go and configure with the new params. */ +@@ -302,6 +309,15 @@ static struct kgdb_io kgdboc_io_ops = { + .post_exception = kgdboc_post_exp_handler, + }; + ++static struct kgdb_io kgdboc_io_ops_console = { ++ .name = "kgdboc", ++ .read_char = kgdboc_get_char, ++ .write_char = kgdboc_put_char, ++ .pre_exception = kgdboc_pre_exp_handler, ++ .post_exception = kgdboc_post_exp_handler, ++ .is_console = 1 ++}; ++ + #ifdef CONFIG_KGDB_SERIAL_CONSOLE + /* This is only available if kgdboc is a built in for early debugging */ + static int __init kgdboc_early_init(char *opt) +diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c +index 05728894..b9d44c6 100644 +--- a/drivers/tty/sysrq.c ++++ b/drivers/tty/sysrq.c +@@ -865,7 +865,7 @@ EXPORT_SYMBOL(unregister_sysrq_key); + static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf, + size_t count, loff_t *ppos) + { +- if (count) { ++ if (count && capable(CAP_SYS_ADMIN)) { + char c; + + if (get_user(c, buf)) +diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c +index d939bd7..33d92cd 100644 +--- a/drivers/tty/tty_io.c ++++ b/drivers/tty/tty_io.c +@@ -3278,7 +3278,7 @@ EXPORT_SYMBOL_GPL(get_current_tty); + + void tty_default_fops(struct file_operations *fops) + { +- *fops = tty_fops; ++ memcpy((void *)fops, &tty_fops, sizeof(tty_fops)); + } + + /* +diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c +index 24b95db..9c078d0 100644 +--- a/drivers/tty/tty_ldisc.c ++++ b/drivers/tty/tty_ldisc.c +@@ -57,7 +57,7 @@ static void put_ldisc(struct tty_ldisc *ld) + if (atomic_dec_and_lock(&ld->users, &tty_ldisc_lock)) { + struct tty_ldisc_ops *ldo = ld->ops; + +- ldo->refcount--; ++ atomic_dec(&ldo->refcount); + module_put(ldo->owner); + spin_unlock_irqrestore(&tty_ldisc_lock, flags); + +@@ -92,7 +92,7 @@ int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc) + spin_lock_irqsave(&tty_ldisc_lock, flags); + tty_ldiscs[disc] = new_ldisc; + new_ldisc->num = disc; +- new_ldisc->refcount = 0; ++ atomic_set(&new_ldisc->refcount, 0); + spin_unlock_irqrestore(&tty_ldisc_lock, flags); + + return ret; +@@ -120,7 +120,7 @@ int tty_unregister_ldisc(int disc) + return -EINVAL; + + spin_lock_irqsave(&tty_ldisc_lock, flags); +- if (tty_ldiscs[disc]->refcount) ++ if (atomic_read(&tty_ldiscs[disc]->refcount)) + ret = -EBUSY; + else + tty_ldiscs[disc] = NULL; +@@ -141,7 +141,7 @@ static struct tty_ldisc_ops *get_ldops(int disc) + if (ldops) { + ret = ERR_PTR(-EAGAIN); + if (try_module_get(ldops->owner)) { +- ldops->refcount++; ++ atomic_inc(&ldops->refcount); + ret = ldops; + } + } +@@ -154,7 +154,7 @@ static void put_ldops(struct tty_ldisc_ops *ldops) + unsigned long flags; + + spin_lock_irqsave(&tty_ldisc_lock, flags); +- ldops->refcount--; ++ atomic_dec(&ldops->refcount); + module_put(ldops->owner); + spin_unlock_irqrestore(&tty_ldisc_lock, flags); + } +diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c +index 3b0c4e3..f98a992 100644 +--- a/drivers/tty/vt/keyboard.c ++++ b/drivers/tty/vt/keyboard.c +@@ -663,6 +663,16 @@ static void k_spec(struct vc_data *vc, unsigned char value, char up_flag) + kbd->kbdmode == VC_OFF) && + value != KVAL(K_SAK)) + return; /* SAK is allowed even in raw mode */ ++ ++#if defined(CONFIG_GRKERNSEC_PROC) || defined(CONFIG_GRKERNSEC_PROC_MEMMAP) ++ { ++ void *func = fn_handler[value]; ++ if (func == fn_show_state || func == fn_show_ptregs || ++ func == fn_show_mem) ++ return; ++ } ++#endif ++ + fn_handler[value](vc); + } + +@@ -1812,9 +1822,6 @@ int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm, + if (copy_from_user(&tmp, user_kbe, sizeof(struct kbentry))) + return -EFAULT; + +- if (!capable(CAP_SYS_TTY_CONFIG)) +- perm = 0; +- + switch (cmd) { + case KDGKBENT: + /* Ensure another thread doesn't free it under us */ +@@ -1829,6 +1836,9 @@ int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm, + spin_unlock_irqrestore(&kbd_event_lock, flags); + return put_user(val, &user_kbe->kb_value); + case KDSKBENT: ++ if (!capable(CAP_SYS_TTY_CONFIG)) ++ perm = 0; ++ + if (!perm) + return -EPERM; + if (!i && v == K_NOSUCHMAP) { +@@ -1919,9 +1929,6 @@ int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm) + int i, j, k; + int ret; + +- if (!capable(CAP_SYS_TTY_CONFIG)) +- perm = 0; +- + kbs = kmalloc(sizeof(*kbs), GFP_KERNEL); + if (!kbs) { + ret = -ENOMEM; +@@ -1955,6 +1962,9 @@ int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm) + kfree(kbs); + return ((p && *p) ? -EOVERFLOW : 0); + case KDSKBSENT: ++ if (!capable(CAP_SYS_TTY_CONFIG)) ++ perm = 0; ++ + if (!perm) { + ret = -EPERM; + goto reterr; +diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c +index a783d53..cb30d94 100644 +--- a/drivers/uio/uio.c ++++ b/drivers/uio/uio.c +@@ -25,6 +25,7 @@ + #include <linux/kobject.h> + #include <linux/cdev.h> + #include <linux/uio_driver.h> ++#include <asm/local.h> + + #define UIO_MAX_DEVICES (1U << MINORBITS) + +@@ -32,10 +33,10 @@ struct uio_device { + struct module *owner; + struct device *dev; + int minor; +- atomic_t event; ++ atomic_unchecked_t event; + struct fasync_struct *async_queue; + wait_queue_head_t wait; +- int vma_count; ++ local_t vma_count; + struct uio_info *info; + struct kobject *map_dir; + struct kobject *portio_dir; +@@ -242,7 +243,7 @@ static ssize_t show_event(struct device *dev, + struct device_attribute *attr, char *buf) + { + struct uio_device *idev = dev_get_drvdata(dev); +- return sprintf(buf, "%u\n", (unsigned int)atomic_read(&idev->event)); ++ return sprintf(buf, "%u\n", (unsigned int)atomic_read_unchecked(&idev->event)); + } + + static struct device_attribute uio_class_attributes[] = { +@@ -408,7 +409,7 @@ void uio_event_notify(struct uio_info *info) + { + struct uio_device *idev = info->uio_dev; + +- atomic_inc(&idev->event); ++ atomic_inc_unchecked(&idev->event); + wake_up_interruptible(&idev->wait); + kill_fasync(&idev->async_queue, SIGIO, POLL_IN); + } +@@ -461,7 +462,7 @@ static int uio_open(struct inode *inode, struct file *filep) + } + + listener->dev = idev; +- listener->event_count = atomic_read(&idev->event); ++ listener->event_count = atomic_read_unchecked(&idev->event); + filep->private_data = listener; + + if (idev->info->open) { +@@ -512,7 +513,7 @@ static unsigned int uio_poll(struct file *filep, poll_table *wait) + return -EIO; + + poll_wait(filep, &idev->wait, wait); +- if (listener->event_count != atomic_read(&idev->event)) ++ if (listener->event_count != atomic_read_unchecked(&idev->event)) + return POLLIN | POLLRDNORM; + return 0; + } +@@ -537,7 +538,7 @@ static ssize_t uio_read(struct file *filep, char __user *buf, + do { + set_current_state(TASK_INTERRUPTIBLE); + +- event_count = atomic_read(&idev->event); ++ event_count = atomic_read_unchecked(&idev->event); + if (event_count != listener->event_count) { + if (copy_to_user(buf, &event_count, count)) + retval = -EFAULT; +@@ -606,13 +607,13 @@ static int uio_find_mem_index(struct vm_area_struct *vma) + static void uio_vma_open(struct vm_area_struct *vma) + { + struct uio_device *idev = vma->vm_private_data; +- idev->vma_count++; ++ local_inc(&idev->vma_count); + } + + static void uio_vma_close(struct vm_area_struct *vma) + { + struct uio_device *idev = vma->vm_private_data; +- idev->vma_count--; ++ local_dec(&idev->vma_count); + } + + static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf) +@@ -821,7 +822,7 @@ int __uio_register_device(struct module *owner, + idev->owner = owner; + idev->info = info; + init_waitqueue_head(&idev->wait); +- atomic_set(&idev->event, 0); ++ atomic_set_unchecked(&idev->event, 0); + + ret = uio_get_minor(idev); + if (ret) +diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c +index 98b89fe..aff824e 100644 +--- a/drivers/usb/atm/cxacru.c ++++ b/drivers/usb/atm/cxacru.c +@@ -473,7 +473,7 @@ static ssize_t cxacru_sysfs_store_adsl_config(struct device *dev, + ret = sscanf(buf + pos, "%x=%x%n", &index, &value, &tmp); + if (ret < 2) + return -EINVAL; +- if (index < 0 || index > 0x7f) ++ if (index > 0x7f) + return -EINVAL; + pos += tmp; + +diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c +index d3448ca..d2864ca 100644 +--- a/drivers/usb/atm/usbatm.c ++++ b/drivers/usb/atm/usbatm.c +@@ -333,7 +333,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char + if (printk_ratelimit()) + atm_warn(instance, "%s: OAM not supported (vpi %d, vci %d)!\n", + __func__, vpi, vci); +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + return; + } + +@@ -361,7 +361,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char + if (length > ATM_MAX_AAL5_PDU) { + atm_rldbg(instance, "%s: bogus length %u (vcc: 0x%p)!\n", + __func__, length, vcc); +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + goto out; + } + +@@ -370,14 +370,14 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char + if (sarb->len < pdu_length) { + atm_rldbg(instance, "%s: bogus pdu_length %u (sarb->len: %u, vcc: 0x%p)!\n", + __func__, pdu_length, sarb->len, vcc); +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + goto out; + } + + if (crc32_be(~0, skb_tail_pointer(sarb) - pdu_length, pdu_length) != 0xc704dd7b) { + atm_rldbg(instance, "%s: packet failed crc check (vcc: 0x%p)!\n", + __func__, vcc); +- atomic_inc(&vcc->stats->rx_err); ++ atomic_inc_unchecked(&vcc->stats->rx_err); + goto out; + } + +@@ -387,7 +387,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char + if (printk_ratelimit()) + atm_err(instance, "%s: no memory for skb (length: %u)!\n", + __func__, length); +- atomic_inc(&vcc->stats->rx_drop); ++ atomic_inc_unchecked(&vcc->stats->rx_drop); + goto out; + } + +@@ -412,7 +412,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char + + vcc->push(vcc, skb); + +- atomic_inc(&vcc->stats->rx); ++ atomic_inc_unchecked(&vcc->stats->rx); + out: + skb_trim(sarb, 0); + } +@@ -615,7 +615,7 @@ static void usbatm_tx_process(unsigned long data) + struct atm_vcc *vcc = UDSL_SKB(skb)->atm.vcc; + + usbatm_pop(vcc, skb); +- atomic_inc(&vcc->stats->tx); ++ atomic_inc_unchecked(&vcc->stats->tx); + + skb = skb_dequeue(&instance->sndqueue); + } +@@ -773,11 +773,11 @@ static int usbatm_atm_proc_read(struct atm_dev *atm_dev, loff_t * pos, char *pag + if (!left--) + return sprintf(page, + "AAL5: tx %d ( %d err ), rx %d ( %d err, %d drop )\n", +- atomic_read(&atm_dev->stats.aal5.tx), +- atomic_read(&atm_dev->stats.aal5.tx_err), +- atomic_read(&atm_dev->stats.aal5.rx), +- atomic_read(&atm_dev->stats.aal5.rx_err), +- atomic_read(&atm_dev->stats.aal5.rx_drop)); ++ atomic_read_unchecked(&atm_dev->stats.aal5.tx), ++ atomic_read_unchecked(&atm_dev->stats.aal5.tx_err), ++ atomic_read_unchecked(&atm_dev->stats.aal5.rx), ++ atomic_read_unchecked(&atm_dev->stats.aal5.rx_err), ++ atomic_read_unchecked(&atm_dev->stats.aal5.rx_drop)); + + if (!left--) { + if (instance->disconnected) +diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c +index d956965..4179a77 100644 +--- a/drivers/usb/core/devices.c ++++ b/drivers/usb/core/devices.c +@@ -126,7 +126,7 @@ static const char format_endpt[] = + * time it gets called. + */ + static struct device_connect_event { +- atomic_t count; ++ atomic_unchecked_t count; + wait_queue_head_t wait; + } device_event = { + .count = ATOMIC_INIT(1), +@@ -164,7 +164,7 @@ static const struct class_info clas_info[] = { + + void usbfs_conn_disc_event(void) + { +- atomic_add(2, &device_event.count); ++ atomic_add_unchecked(2, &device_event.count); + wake_up(&device_event.wait); + } + +@@ -648,7 +648,7 @@ static unsigned int usb_device_poll(struct file *file, + + poll_wait(file, &device_event.wait, wait); + +- event_count = atomic_read(&device_event.count); ++ event_count = atomic_read_unchecked(&device_event.count); + if (file->f_version != event_count) { + file->f_version = event_count; + return POLLIN | POLLRDNORM; +diff --git a/drivers/usb/early/ehci-dbgp.c b/drivers/usb/early/ehci-dbgp.c +index 1fc8f12..20647c1 100644 +--- a/drivers/usb/early/ehci-dbgp.c ++++ b/drivers/usb/early/ehci-dbgp.c +@@ -97,7 +97,8 @@ static inline u32 dbgp_len_update(u32 x, u32 len) + + #ifdef CONFIG_KGDB + static struct kgdb_io kgdbdbgp_io_ops; +-#define dbgp_kgdb_mode (dbg_io_ops == &kgdbdbgp_io_ops) ++static struct kgdb_io kgdbdbgp_io_ops_console; ++#define dbgp_kgdb_mode (dbg_io_ops == &kgdbdbgp_io_ops || dbg_io_ops == &kgdbdbgp_io_ops_console) + #else + #define dbgp_kgdb_mode (0) + #endif +@@ -1035,6 +1036,13 @@ static struct kgdb_io kgdbdbgp_io_ops = { + .write_char = kgdbdbgp_write_char, + }; + ++static struct kgdb_io kgdbdbgp_io_ops_console = { ++ .name = "kgdbdbgp", ++ .read_char = kgdbdbgp_read_char, ++ .write_char = kgdbdbgp_write_char, ++ .is_console = 1 ++}; ++ + static int kgdbdbgp_wait_time; + + static int __init kgdbdbgp_parse_config(char *str) +@@ -1050,8 +1058,10 @@ static int __init kgdbdbgp_parse_config(char *str) + ptr++; + kgdbdbgp_wait_time = simple_strtoul(ptr, &ptr, 10); + } +- kgdb_register_io_module(&kgdbdbgp_io_ops); +- kgdbdbgp_io_ops.is_console = early_dbgp_console.index != -1; ++ if (early_dbgp_console.index != -1) ++ kgdb_register_io_module(&kgdbdbgp_io_ops_console); ++ else ++ kgdb_register_io_module(&kgdbdbgp_io_ops); + + return 0; + } +diff --git a/drivers/usb/wusbcore/wa-hc.h b/drivers/usb/wusbcore/wa-hc.h +index d6bea3e..60b250e 100644 +--- a/drivers/usb/wusbcore/wa-hc.h ++++ b/drivers/usb/wusbcore/wa-hc.h +@@ -192,7 +192,7 @@ struct wahc { + struct list_head xfer_delayed_list; + spinlock_t xfer_list_lock; + struct work_struct xfer_work; +- atomic_t xfer_id_count; ++ atomic_unchecked_t xfer_id_count; + }; + + +@@ -246,7 +246,7 @@ static inline void wa_init(struct wahc *wa) + INIT_LIST_HEAD(&wa->xfer_delayed_list); + spin_lock_init(&wa->xfer_list_lock); + INIT_WORK(&wa->xfer_work, wa_urb_enqueue_run); +- atomic_set(&wa->xfer_id_count, 1); ++ atomic_set_unchecked(&wa->xfer_id_count, 1); + } + + /** +diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c +index 57c01ab..8a05959 100644 +--- a/drivers/usb/wusbcore/wa-xfer.c ++++ b/drivers/usb/wusbcore/wa-xfer.c +@@ -296,7 +296,7 @@ out: + */ + static void wa_xfer_id_init(struct wa_xfer *xfer) + { +- xfer->id = atomic_add_return(1, &xfer->wa->xfer_id_count); ++ xfer->id = atomic_add_return_unchecked(1, &xfer->wa->xfer_id_count); + } + + /* +diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c +index 51e4c1e..9d87e2a 100644 +--- a/drivers/vhost/vhost.c ++++ b/drivers/vhost/vhost.c +@@ -632,7 +632,7 @@ static long vhost_set_memory(struct vhost_dev *d, struct vhost_memory __user *m) + return 0; + } + +-static long vhost_set_vring(struct vhost_dev *d, int ioctl, void __user *argp) ++static long vhost_set_vring(struct vhost_dev *d, unsigned int ioctl, void __user *argp) + { + struct file *eventfp, *filep = NULL, + *pollstart = NULL, *pollstop = NULL; +diff --git a/drivers/video/aty/aty128fb.c b/drivers/video/aty/aty128fb.c +index b0b2ac3..89a4399 100644 +--- a/drivers/video/aty/aty128fb.c ++++ b/drivers/video/aty/aty128fb.c +@@ -148,7 +148,7 @@ enum { + }; + + /* Must match above enum */ +-static const char *r128_family[] __devinitdata = { ++static const char *r128_family[] __devinitconst = { + "AGP", + "PCI", + "PRO AGP", +diff --git a/drivers/video/fbcmap.c b/drivers/video/fbcmap.c +index 5c3960d..15cf8fc 100644 +--- a/drivers/video/fbcmap.c ++++ b/drivers/video/fbcmap.c +@@ -285,8 +285,7 @@ int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *info) + rc = -ENODEV; + goto out; + } +- if (cmap->start < 0 || (!info->fbops->fb_setcolreg && +- !info->fbops->fb_setcmap)) { ++ if (!info->fbops->fb_setcolreg && !info->fbops->fb_setcmap) { + rc = -EINVAL; + goto out1; + } +diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c +index c6ce416..3b9b642 100644 +--- a/drivers/video/fbmem.c ++++ b/drivers/video/fbmem.c +@@ -428,7 +428,7 @@ static void fb_do_show_logo(struct fb_info *info, struct fb_image *image, + image->dx += image->width + 8; + } + } else if (rotate == FB_ROTATE_UD) { +- for (x = 0; x < num && image->dx >= 0; x++) { ++ for (x = 0; x < num && (__s32)image->dx >= 0; x++) { + info->fbops->fb_imageblit(info, image); + image->dx -= image->width + 8; + } +@@ -440,7 +440,7 @@ static void fb_do_show_logo(struct fb_info *info, struct fb_image *image, + image->dy += image->height + 8; + } + } else if (rotate == FB_ROTATE_CCW) { +- for (x = 0; x < num && image->dy >= 0; x++) { ++ for (x = 0; x < num && (__s32)image->dy >= 0; x++) { + info->fbops->fb_imageblit(info, image); + image->dy -= image->height + 8; + } +@@ -1157,7 +1157,7 @@ static long do_fb_ioctl(struct fb_info *info, unsigned int cmd, + return -EFAULT; + if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) + return -EINVAL; +- if (con2fb.framebuffer < 0 || con2fb.framebuffer >= FB_MAX) ++ if (con2fb.framebuffer >= FB_MAX) + return -EINVAL; + if (!registered_fb[con2fb.framebuffer]) + request_module("fb%d", con2fb.framebuffer); +diff --git a/drivers/video/geode/gx1fb_core.c b/drivers/video/geode/gx1fb_core.c +index 5a5d092..265c5ed 100644 +--- a/drivers/video/geode/gx1fb_core.c ++++ b/drivers/video/geode/gx1fb_core.c +@@ -29,7 +29,7 @@ static int crt_option = 1; + static char panel_option[32] = ""; + + /* Modes relevant to the GX1 (taken from modedb.c) */ +-static const struct fb_videomode __devinitdata gx1_modedb[] = { ++static const struct fb_videomode __devinitconst gx1_modedb[] = { + /* 640x480-60 VESA */ + { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2, + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, +diff --git a/drivers/video/gxt4500.c b/drivers/video/gxt4500.c +index 0fad23f..0e9afa4 100644 +--- a/drivers/video/gxt4500.c ++++ b/drivers/video/gxt4500.c +@@ -156,7 +156,7 @@ struct gxt4500_par { + static char *mode_option; + + /* default mode: 1280x1024 @ 60 Hz, 8 bpp */ +-static const struct fb_videomode defaultmode __devinitdata = { ++static const struct fb_videomode defaultmode __devinitconst = { + .refresh = 60, + .xres = 1280, + .yres = 1024, +@@ -581,7 +581,7 @@ static int gxt4500_blank(int blank, struct fb_info *info) + return 0; + } + +-static const struct fb_fix_screeninfo gxt4500_fix __devinitdata = { ++static const struct fb_fix_screeninfo gxt4500_fix __devinitconst = { + .id = "IBM GXT4500P", + .type = FB_TYPE_PACKED_PIXELS, + .visual = FB_VISUAL_PSEUDOCOLOR, +diff --git a/drivers/video/i810/i810_accel.c b/drivers/video/i810/i810_accel.c +index 7672d2e..b56437f 100644 +--- a/drivers/video/i810/i810_accel.c ++++ b/drivers/video/i810/i810_accel.c +@@ -73,6 +73,7 @@ static inline int wait_for_space(struct fb_info *info, u32 space) + } + } + printk("ringbuffer lockup!!!\n"); ++ printk("head:%u tail:%u iring.size:%u space:%u\n", head, tail, par->iring.size, space); + i810_report_error(mmio); + par->dev_flags |= LOCKUP; + info->pixmap.scan_align = 1; +diff --git a/drivers/video/i810/i810_main.c b/drivers/video/i810/i810_main.c +index b83f361..2b05a91 100644 +--- a/drivers/video/i810/i810_main.c ++++ b/drivers/video/i810/i810_main.c +@@ -97,7 +97,7 @@ static int i810fb_blank (int blank_mode, struct fb_info *info); + static void i810fb_release_resource (struct fb_info *info, struct i810fb_par *par); + + /* PCI */ +-static const char *i810_pci_list[] __devinitdata = { ++static const char *i810_pci_list[] __devinitconst = { + "Intel(R) 810 Framebuffer Device" , + "Intel(R) 810-DC100 Framebuffer Device" , + "Intel(R) 810E Framebuffer Device" , +diff --git a/drivers/video/jz4740_fb.c b/drivers/video/jz4740_fb.c +index de36693..3c63fc2 100644 +--- a/drivers/video/jz4740_fb.c ++++ b/drivers/video/jz4740_fb.c +@@ -136,7 +136,7 @@ struct jzfb { + uint32_t pseudo_palette[16]; + }; + +-static const struct fb_fix_screeninfo jzfb_fix __devinitdata = { ++static const struct fb_fix_screeninfo jzfb_fix __devinitconst = { + .id = "JZ4740 FB", + .type = FB_TYPE_PACKED_PIXELS, + .visual = FB_VISUAL_TRUECOLOR, +diff --git a/drivers/video/logo/logo_linux_clut224.ppm b/drivers/video/logo/logo_linux_clut224.ppm +index 3c14e43..eafa544 100644 +--- a/drivers/video/logo/logo_linux_clut224.ppm ++++ b/drivers/video/logo/logo_linux_clut224.ppm +@@ -1,1604 +1,1123 @@ + P3 +-# Standard 224-color Linux logo + 80 80 + 255 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 6 6 6 6 6 6 10 10 10 10 10 10 +- 10 10 10 6 6 6 6 6 6 6 6 6 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 0 0 0 0 0 0 0 +- 0 0 0 0 0 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4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 3 3 3 0 0 0 0 0 0 ++0 0 0 0 0 0 0 0 0 0 0 0 3 3 3 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 1 1 1 0 0 0 ++0 0 0 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 2 1 0 2 1 0 3 2 2 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 2 2 2 0 0 0 3 4 3 26 28 28 ++37 38 37 37 38 37 14 17 19 2 2 2 0 0 0 2 2 2 ++5 5 5 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 3 3 3 0 0 0 1 1 1 6 6 6 ++2 2 2 0 0 0 3 3 3 4 4 4 4 4 4 4 4 4 ++4 4 5 3 3 3 1 0 0 0 0 0 1 0 0 0 0 0 ++1 1 1 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++2 2 2 0 0 0 0 0 0 14 17 19 60 74 84 137 136 137 ++153 152 153 137 136 137 125 124 125 60 73 81 6 6 6 3 1 0 ++0 0 0 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 0 0 0 4 4 4 41 54 63 125 124 125 ++60 73 81 6 6 6 4 0 0 3 3 3 4 4 4 4 4 4 ++4 4 4 0 0 0 6 9 11 41 54 63 41 65 82 22 30 35 ++2 2 2 2 1 0 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 5 5 5 5 5 5 2 2 2 0 0 0 ++4 0 0 6 6 6 41 54 63 137 136 137 174 174 174 167 166 167 ++165 164 165 165 164 165 163 162 163 163 162 163 125 124 125 41 54 63 ++1 1 1 0 0 0 0 0 0 3 3 3 5 5 5 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 ++3 3 3 2 0 0 4 0 0 60 73 81 156 155 156 167 166 167 ++163 162 163 85 115 134 5 7 8 0 0 0 4 4 4 5 5 5 ++0 0 0 2 5 5 55 98 126 90 154 193 90 154 193 72 125 159 ++37 51 59 2 0 0 1 1 1 4 5 5 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 5 5 5 4 4 4 1 1 1 0 0 0 3 3 3 ++37 38 37 125 124 125 163 162 163 174 174 174 158 157 158 158 157 158 ++156 155 156 156 155 156 158 157 158 165 164 165 174 174 174 166 165 166 ++125 124 125 16 19 21 1 0 0 0 0 0 0 0 0 4 4 4 ++5 5 5 5 5 5 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 1 1 1 ++0 0 0 0 0 0 37 38 37 153 152 153 174 174 174 158 157 158 ++174 174 174 163 162 163 37 38 37 4 3 3 4 0 0 1 1 1 ++0 0 0 22 40 52 101 161 196 101 161 196 90 154 193 101 161 196 ++64 123 161 14 17 19 0 0 0 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 ++5 5 5 2 2 2 0 0 0 4 0 0 24 26 27 85 115 134 ++156 155 156 174 174 174 167 166 167 156 155 156 154 153 154 157 156 157 ++156 155 156 156 155 156 155 154 155 153 152 153 158 157 158 167 166 167 ++174 174 174 156 155 156 60 74 84 16 19 21 0 0 0 0 0 0 ++1 1 1 5 5 5 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 5 5 5 6 6 6 3 3 3 0 0 0 4 0 0 ++13 16 17 60 73 81 137 136 137 165 164 165 156 155 156 153 152 153 ++174 174 174 177 184 187 60 73 81 3 1 0 0 0 0 1 1 2 ++22 30 35 64 123 161 136 185 209 90 154 193 90 154 193 90 154 193 ++90 154 193 21 29 34 0 0 0 3 2 2 4 4 5 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 3 3 3 ++0 0 0 0 0 0 10 13 16 60 74 84 157 156 157 174 174 174 ++174 174 174 158 157 158 153 152 153 154 153 154 156 155 156 155 154 155 ++156 155 156 155 154 155 154 153 154 157 156 157 154 153 154 153 152 153 ++163 162 163 174 174 174 177 184 187 137 136 137 60 73 81 13 16 17 ++4 0 0 0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 ++5 5 5 4 4 4 1 1 1 0 0 0 3 3 3 41 54 63 ++131 129 131 174 174 174 174 174 174 174 174 174 167 166 167 174 174 174 ++190 197 201 137 136 137 24 26 27 4 0 0 16 21 25 50 82 103 ++90 154 193 136 185 209 90 154 193 101 161 196 101 161 196 101 161 196 ++31 91 132 3 6 7 0 0 0 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 2 2 2 0 0 0 4 0 0 ++4 0 0 43 57 68 137 136 137 177 184 187 174 174 174 163 162 163 ++155 154 155 155 154 155 156 155 156 155 154 155 158 157 158 165 164 165 ++167 166 167 166 165 166 163 162 163 157 156 157 155 154 155 155 154 155 ++153 152 153 156 155 156 167 166 167 174 174 174 174 174 174 131 129 131 ++41 54 63 5 5 5 0 0 0 0 0 0 3 3 3 4 4 4 ++1 1 1 0 0 0 1 0 0 26 28 28 125 124 125 174 174 174 ++177 184 187 174 174 174 174 174 174 156 155 156 131 129 131 137 136 137 ++125 124 125 24 26 27 4 0 0 41 65 82 90 154 193 136 185 209 ++136 185 209 101 161 196 53 118 160 37 112 160 90 154 193 34 86 122 ++7 12 15 0 0 0 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 3 3 3 0 0 0 0 0 0 5 5 5 37 38 37 ++125 124 125 167 166 167 174 174 174 167 166 167 158 157 158 155 154 155 ++156 155 156 156 155 156 156 155 156 163 162 163 167 166 167 155 154 155 ++137 136 137 153 152 153 156 155 156 165 164 165 163 162 163 156 155 156 ++156 155 156 156 155 156 155 154 155 158 157 158 166 165 166 174 174 174 ++167 166 167 125 124 125 37 38 37 1 0 0 0 0 0 0 0 0 ++0 0 0 24 26 27 60 74 84 158 157 158 174 174 174 174 174 174 ++166 165 166 158 157 158 125 124 125 41 54 63 13 16 17 6 6 6 ++6 6 6 37 38 37 80 127 157 136 185 209 101 161 196 101 161 196 ++90 154 193 28 67 93 6 10 14 13 20 25 13 20 25 6 10 14 ++1 1 2 4 3 3 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++1 1 1 1 0 0 4 3 3 37 38 37 60 74 84 153 152 153 ++167 166 167 167 166 167 158 157 158 154 153 154 155 154 155 156 155 156 ++157 156 157 158 157 158 167 166 167 167 166 167 131 129 131 43 57 68 ++26 28 28 37 38 37 60 73 81 131 129 131 165 164 165 166 165 166 ++158 157 158 155 154 155 156 155 156 156 155 156 156 155 156 158 157 158 ++165 164 165 174 174 174 163 162 163 60 74 84 16 19 21 13 16 17 ++60 73 81 131 129 131 174 174 174 174 174 174 167 166 167 165 164 165 ++137 136 137 60 73 81 24 26 27 4 0 0 4 0 0 16 19 21 ++52 104 138 101 161 196 136 185 209 136 185 209 90 154 193 27 99 146 ++13 20 25 4 5 7 2 5 5 4 5 7 1 1 2 0 0 0 ++4 4 4 4 4 4 3 3 3 2 2 2 2 2 2 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 3 3 3 0 0 0 ++0 0 0 13 16 17 60 73 81 137 136 137 174 174 174 166 165 166 ++158 157 158 156 155 156 157 156 157 156 155 156 155 154 155 158 157 158 ++167 166 167 174 174 174 153 152 153 60 73 81 16 19 21 4 0 0 ++4 0 0 4 0 0 6 6 6 26 28 28 60 74 84 158 157 158 ++174 174 174 166 165 166 157 156 157 155 154 155 156 155 156 156 155 156 ++155 154 155 158 157 158 167 166 167 167 166 167 131 129 131 125 124 125 ++137 136 137 167 166 167 167 166 167 174 174 174 158 157 158 125 124 125 ++16 19 21 4 0 0 4 0 0 10 13 16 49 76 92 107 159 188 ++136 185 209 136 185 209 90 154 193 26 108 161 22 40 52 6 10 14 ++2 3 3 1 1 2 1 1 2 4 4 5 4 4 5 4 4 5 ++4 4 5 2 2 1 0 0 0 0 0 0 0 0 0 2 2 2 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 5 5 5 3 3 3 0 0 0 1 0 0 4 0 0 ++37 51 59 131 129 131 167 166 167 167 166 167 163 162 163 157 156 157 ++157 156 157 155 154 155 153 152 153 157 156 157 167 166 167 174 174 174 ++153 152 153 125 124 125 37 38 37 4 0 0 4 0 0 4 0 0 ++4 3 3 4 3 3 4 0 0 6 6 6 4 0 0 37 38 37 ++125 124 125 174 174 174 174 174 174 165 164 165 156 155 156 154 153 154 ++156 155 156 156 155 156 155 154 155 163 162 163 158 157 158 163 162 163 ++174 174 174 174 174 174 174 174 174 125 124 125 37 38 37 0 0 0 ++4 0 0 6 9 11 41 54 63 90 154 193 136 185 209 146 190 211 ++136 185 209 37 112 160 22 40 52 6 10 14 3 6 7 1 1 2 ++1 1 2 3 3 3 1 1 2 3 3 3 4 4 4 4 4 4 ++2 2 2 2 0 0 16 19 21 37 38 37 24 26 27 0 0 0 ++0 0 0 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 ++4 4 4 0 0 0 0 0 0 0 0 0 26 28 28 120 125 127 ++158 157 158 174 174 174 165 164 165 157 156 157 155 154 155 156 155 156 ++153 152 153 153 152 153 167 166 167 174 174 174 174 174 174 125 124 125 ++37 38 37 4 0 0 0 0 0 4 0 0 4 3 3 4 4 4 ++4 4 4 4 4 4 5 5 5 4 0 0 4 0 0 4 0 0 ++4 3 3 43 57 68 137 136 137 174 174 174 174 174 174 165 164 165 ++154 153 154 153 152 153 153 152 153 153 152 153 163 162 163 174 174 174 ++174 174 174 153 152 153 60 73 81 6 6 6 4 0 0 4 3 3 ++32 43 50 80 127 157 136 185 209 146 190 211 146 190 211 90 154 193 ++28 67 93 28 67 93 40 71 93 3 6 7 1 1 2 2 5 5 ++50 82 103 79 117 143 26 37 45 0 0 0 3 3 3 1 1 1 ++0 0 0 41 54 63 137 136 137 174 174 174 153 152 153 60 73 81 ++2 0 0 0 0 0 ++4 4 4 4 4 4 4 4 4 4 4 4 6 6 6 2 2 2 ++0 0 0 2 0 0 24 26 27 60 74 84 153 152 153 174 174 174 ++174 174 174 157 156 157 154 153 154 156 155 156 154 153 154 153 152 153 ++165 164 165 174 174 174 177 184 187 137 136 137 43 57 68 6 6 6 ++4 0 0 2 0 0 3 3 3 5 5 5 5 5 5 4 4 4 ++4 4 4 4 4 4 4 4 4 5 5 5 6 6 6 4 3 3 ++4 0 0 4 0 0 24 26 27 60 73 81 153 152 153 174 174 174 ++174 174 174 158 157 158 158 157 158 174 174 174 174 174 174 158 157 158 ++60 74 84 24 26 27 4 0 0 4 0 0 17 23 27 59 113 148 ++136 185 209 191 222 234 146 190 211 136 185 209 31 91 132 7 11 13 ++22 40 52 101 161 196 90 154 193 6 9 11 3 4 4 43 95 132 ++136 185 209 172 205 220 55 98 126 0 0 0 0 0 0 2 0 0 ++26 28 28 153 152 153 177 184 187 167 166 167 177 184 187 165 164 165 ++37 38 37 0 0 0 ++4 4 4 4 4 4 5 5 5 5 5 5 1 1 1 0 0 0 ++13 16 17 60 73 81 137 136 137 174 174 174 174 174 174 165 164 165 ++153 152 153 153 152 153 155 154 155 154 153 154 158 157 158 174 174 174 ++177 184 187 163 162 163 60 73 81 16 19 21 4 0 0 4 0 0 ++4 3 3 4 4 4 5 5 5 5 5 5 4 4 4 5 5 5 ++5 5 5 5 5 5 5 5 5 4 4 4 4 4 4 5 5 5 ++6 6 6 4 0 0 4 0 0 4 0 0 24 26 27 60 74 84 ++166 165 166 174 174 174 177 184 187 165 164 165 125 124 125 24 26 27 ++4 0 0 4 0 0 5 5 5 50 82 103 136 185 209 172 205 220 ++146 190 211 136 185 209 26 108 161 22 40 52 7 12 15 44 81 103 ++71 116 144 28 67 93 37 51 59 41 65 82 100 139 164 101 161 196 ++90 154 193 90 154 193 28 67 93 0 0 0 0 0 0 26 28 28 ++125 124 125 167 166 167 163 162 163 153 152 153 163 162 163 174 174 174 ++85 115 134 4 0 0 ++4 4 4 5 5 5 4 4 4 1 0 0 4 0 0 34 47 55 ++125 124 125 174 174 174 174 174 174 167 166 167 157 156 157 153 152 153 ++155 154 155 155 154 155 158 157 158 166 165 166 167 166 167 154 153 154 ++125 124 125 26 28 28 4 0 0 4 0 0 4 0 0 5 5 5 ++5 5 5 4 4 4 4 4 4 4 4 4 4 4 4 1 1 1 ++0 0 0 0 0 0 1 1 1 4 4 4 4 4 4 4 4 4 ++5 5 5 5 5 5 4 3 3 4 0 0 4 0 0 6 6 6 ++37 38 37 131 129 131 137 136 137 37 38 37 0 0 0 4 0 0 ++4 5 5 43 61 72 90 154 193 172 205 220 146 190 211 136 185 209 ++90 154 193 28 67 93 13 20 25 43 61 72 71 116 144 44 81 103 ++2 5 5 7 11 13 59 113 148 101 161 196 90 154 193 28 67 93 ++13 20 25 6 10 14 0 0 0 13 16 17 60 73 81 137 136 137 ++166 165 166 158 157 158 156 155 156 154 153 154 167 166 167 174 174 174 ++60 73 81 4 0 0 ++4 4 4 4 4 4 0 0 0 3 3 3 60 74 84 174 174 174 ++174 174 174 167 166 167 163 162 163 155 154 155 157 156 157 155 154 155 ++156 155 156 163 162 163 167 166 167 158 157 158 125 124 125 37 38 37 ++4 3 3 4 0 0 4 0 0 6 6 6 6 6 6 5 5 5 ++4 4 4 4 4 4 4 4 4 1 1 1 0 0 0 2 3 3 ++10 13 16 7 11 13 1 0 0 0 0 0 2 2 1 4 4 4 ++4 4 4 4 4 4 4 4 4 5 5 5 4 3 3 4 0 0 ++4 0 0 7 11 13 13 16 17 4 0 0 3 3 3 34 47 55 ++80 127 157 146 190 211 172 205 220 136 185 209 136 185 209 136 185 209 ++28 67 93 22 40 52 55 98 126 55 98 126 21 29 34 7 11 13 ++50 82 103 101 161 196 101 161 196 35 83 115 13 20 25 2 2 1 ++1 1 2 1 1 2 37 51 59 131 129 131 174 174 174 174 174 174 ++167 166 167 163 162 163 163 162 163 167 166 167 174 174 174 125 124 125 ++16 19 21 4 0 0 ++4 4 4 4 0 0 4 0 0 60 74 84 174 174 174 174 174 174 ++158 157 158 155 154 155 155 154 155 156 155 156 155 154 155 158 157 158 ++167 166 167 165 164 165 131 129 131 60 73 81 13 16 17 4 0 0 ++4 0 0 4 3 3 6 6 6 4 3 3 5 5 5 4 4 4 ++4 4 4 3 2 2 0 0 0 0 0 0 7 11 13 45 69 86 ++80 127 157 71 116 144 43 61 72 7 11 13 0 0 0 1 1 1 ++4 3 3 4 4 4 4 4 4 4 4 4 6 6 6 5 5 5 ++3 2 2 4 0 0 1 0 0 21 29 34 59 113 148 136 185 209 ++146 190 211 136 185 209 136 185 209 136 185 209 136 185 209 136 185 209 ++68 124 159 44 81 103 22 40 52 13 16 17 43 61 72 90 154 193 ++136 185 209 59 113 148 21 29 34 3 4 3 1 1 1 0 0 0 ++24 26 27 125 124 125 163 162 163 174 174 174 166 165 166 165 164 165 ++163 162 163 125 124 125 125 124 125 125 124 125 125 124 125 26 28 28 ++4 0 0 4 3 3 ++3 3 3 0 0 0 24 26 27 153 152 153 177 184 187 158 157 158 ++156 155 156 156 155 156 155 154 155 155 154 155 165 164 165 174 174 174 ++155 154 155 60 74 84 26 28 28 4 0 0 4 0 0 3 1 0 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 3 3 ++2 0 0 0 0 0 0 0 0 32 43 50 72 125 159 101 161 196 ++136 185 209 101 161 196 101 161 196 79 117 143 32 43 50 0 0 0 ++0 0 0 2 2 2 4 4 4 4 4 4 3 3 3 1 0 0 ++0 0 0 4 5 5 49 76 92 101 161 196 146 190 211 146 190 211 ++136 185 209 136 185 209 136 185 209 136 185 209 136 185 209 90 154 193 ++28 67 93 13 16 17 37 51 59 80 127 157 136 185 209 90 154 193 ++22 40 52 6 9 11 3 4 3 2 2 1 16 19 21 60 73 81 ++137 136 137 163 162 163 158 157 158 166 165 166 167 166 167 153 152 153 ++60 74 84 37 38 37 6 6 6 13 16 17 4 0 0 1 0 0 ++3 2 2 4 4 4 ++3 2 2 4 0 0 37 38 37 137 136 137 167 166 167 158 157 158 ++157 156 157 154 153 154 157 156 157 167 166 167 174 174 174 125 124 125 ++37 38 37 4 0 0 4 0 0 4 0 0 4 3 3 4 4 4 ++4 4 4 4 4 4 5 5 5 5 5 5 1 1 1 0 0 0 ++0 0 0 16 21 25 55 98 126 90 154 193 136 185 209 101 161 196 ++101 161 196 101 161 196 136 185 209 136 185 209 101 161 196 55 98 126 ++14 17 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ++22 40 52 90 154 193 146 190 211 146 190 211 136 185 209 136 185 209 ++136 185 209 136 185 209 136 185 209 101 161 196 35 83 115 7 11 13 ++17 23 27 59 113 148 136 185 209 101 161 196 34 86 122 7 12 15 ++2 5 5 3 4 3 6 6 6 60 73 81 131 129 131 163 162 163 ++166 165 166 174 174 174 174 174 174 163 162 163 125 124 125 41 54 63 ++13 16 17 4 0 0 4 0 0 4 0 0 1 0 0 2 2 2 ++4 4 4 4 4 4 ++1 1 1 2 1 0 43 57 68 137 136 137 153 152 153 153 152 153 ++163 162 163 156 155 156 165 164 165 167 166 167 60 74 84 6 6 6 ++4 0 0 4 0 0 5 5 5 4 4 4 4 4 4 4 4 4 ++4 5 5 6 6 6 4 3 3 0 0 0 0 0 0 11 15 18 ++40 71 93 100 139 164 101 161 196 101 161 196 101 161 196 101 161 196 ++101 161 196 101 161 196 101 161 196 101 161 196 136 185 209 136 185 209 ++101 161 196 45 69 86 6 6 6 0 0 0 17 23 27 55 98 126 ++136 185 209 146 190 211 136 185 209 136 185 209 136 185 209 136 185 209 ++136 185 209 136 185 209 90 154 193 22 40 52 7 11 13 50 82 103 ++136 185 209 136 185 209 53 118 160 22 40 52 7 11 13 2 5 5 ++3 4 3 37 38 37 125 124 125 157 156 157 166 165 166 167 166 167 ++174 174 174 174 174 174 137 136 137 60 73 81 4 0 0 4 0 0 ++4 0 0 4 0 0 5 5 5 3 3 3 3 3 3 4 4 4 ++4 4 4 4 4 4 ++4 0 0 4 0 0 41 54 63 137 136 137 125 124 125 131 129 131 ++155 154 155 167 166 167 174 174 174 60 74 84 6 6 6 4 0 0 ++4 3 3 6 6 6 4 4 4 4 4 4 4 4 4 5 5 5 ++4 4 4 1 1 1 0 0 0 3 6 7 41 65 82 72 125 159 ++101 161 196 101 161 196 101 161 196 90 154 193 90 154 193 101 161 196 ++101 161 196 101 161 196 101 161 196 101 161 196 101 161 196 136 185 209 ++136 185 209 136 185 209 80 127 157 55 98 126 101 161 196 146 190 211 ++136 185 209 136 185 209 136 185 209 101 161 196 136 185 209 101 161 196 ++136 185 209 101 161 196 35 83 115 22 30 35 101 161 196 172 205 220 ++90 154 193 28 67 93 7 11 13 2 5 5 3 4 3 13 16 17 ++85 115 134 167 166 167 174 174 174 174 174 174 174 174 174 174 174 174 ++167 166 167 60 74 84 13 16 17 4 0 0 4 0 0 4 3 3 ++6 6 6 5 5 5 4 4 4 5 5 5 4 4 4 5 5 5 ++5 5 5 5 5 5 ++1 1 1 4 0 0 41 54 63 137 136 137 137 136 137 125 124 125 ++131 129 131 167 166 167 157 156 157 37 38 37 6 6 6 4 0 0 ++6 6 6 5 5 5 4 4 4 4 4 4 4 5 5 2 2 1 ++0 0 0 0 0 0 26 37 45 58 111 146 101 161 196 101 161 196 ++101 161 196 90 154 193 90 154 193 90 154 193 101 161 196 101 161 196 ++101 161 196 101 161 196 101 161 196 101 161 196 101 161 196 101 161 196 ++101 161 196 136 185 209 136 185 209 136 185 209 146 190 211 136 185 209 ++136 185 209 101 161 196 136 185 209 136 185 209 101 161 196 136 185 209 ++101 161 196 136 185 209 136 185 209 136 185 209 136 185 209 16 89 141 ++7 11 13 2 5 5 2 5 5 13 16 17 60 73 81 154 154 154 ++174 174 174 174 174 174 174 174 174 174 174 174 163 162 163 125 124 125 ++24 26 27 4 0 0 4 0 0 4 0 0 5 5 5 5 5 5 ++4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 ++5 5 5 4 4 4 ++4 0 0 6 6 6 37 38 37 137 136 137 137 136 137 131 129 131 ++131 129 131 153 152 153 131 129 131 26 28 28 4 0 0 4 3 3 ++6 6 6 4 4 4 4 4 4 4 4 4 0 0 0 0 0 0 ++13 20 25 51 88 114 90 154 193 101 161 196 101 161 196 90 154 193 ++90 154 193 90 154 193 90 154 193 90 154 193 90 154 193 101 161 196 ++101 161 196 101 161 196 101 161 196 101 161 196 136 185 209 101 161 196 ++101 161 196 136 185 209 101 161 196 136 185 209 136 185 209 101 161 196 ++136 185 209 101 161 196 136 185 209 101 161 196 101 161 196 101 161 196 ++136 185 209 136 185 209 136 185 209 37 112 160 21 29 34 5 7 8 ++2 5 5 13 16 17 43 57 68 131 129 131 174 174 174 174 174 174 ++174 174 174 167 166 167 157 156 157 125 124 125 37 38 37 4 0 0 ++4 0 0 4 0 0 5 5 5 5 5 5 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++1 1 1 4 0 0 41 54 63 153 152 153 137 136 137 137 136 137 ++137 136 137 153 152 153 125 124 125 24 26 27 4 0 0 3 2 2 ++4 4 4 4 4 4 4 3 3 4 0 0 3 6 7 43 61 72 ++64 123 161 101 161 196 90 154 193 90 154 193 90 154 193 90 154 193 ++90 154 193 90 154 193 90 154 193 90 154 193 101 161 196 90 154 193 ++101 161 196 101 161 196 101 161 196 101 161 196 101 161 196 101 161 196 ++101 161 196 101 161 196 101 161 196 101 161 196 101 161 196 101 161 196 ++136 185 209 101 161 196 101 161 196 136 185 209 136 185 209 101 161 196 ++101 161 196 90 154 193 28 67 93 13 16 17 7 11 13 3 6 7 ++37 51 59 125 124 125 163 162 163 174 174 174 167 166 167 166 165 166 ++167 166 167 131 129 131 60 73 81 4 0 0 4 0 0 4 0 0 ++3 3 3 5 5 5 6 6 6 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 0 0 4 0 0 41 54 63 137 136 137 153 152 153 137 136 137 ++153 152 153 157 156 157 125 124 125 24 26 27 0 0 0 2 2 2 ++4 4 4 4 4 4 2 0 0 0 0 0 28 67 93 90 154 193 ++90 154 193 90 154 193 90 154 193 90 154 193 64 123 161 90 154 193 ++90 154 193 90 154 193 90 154 193 90 154 193 90 154 193 101 161 196 ++90 154 193 101 161 196 101 161 196 101 161 196 90 154 193 136 185 209 ++101 161 196 101 161 196 136 185 209 101 161 196 136 185 209 101 161 196 ++101 161 196 101 161 196 136 185 209 101 161 196 101 161 196 90 154 193 ++35 83 115 13 16 17 3 6 7 2 5 5 13 16 17 60 74 84 ++154 154 154 166 165 166 165 164 165 158 157 158 163 162 163 157 156 157 ++60 74 84 13 16 17 4 0 0 4 0 0 3 2 2 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++1 1 1 4 0 0 41 54 63 157 156 157 155 154 155 137 136 137 ++153 152 153 158 157 158 137 136 137 26 28 28 2 0 0 2 2 2 ++4 4 4 4 4 4 1 0 0 6 10 14 34 86 122 90 154 193 ++64 123 161 90 154 193 64 123 161 90 154 193 90 154 193 90 154 193 ++64 123 161 90 154 193 90 154 193 90 154 193 90 154 193 90 154 193 ++101 161 196 101 161 196 101 161 196 101 161 196 101 161 196 101 161 196 ++101 161 196 101 161 196 101 161 196 101 161 196 101 161 196 101 161 196 ++136 185 209 101 161 196 136 185 209 90 154 193 26 108 161 22 40 52 ++13 16 17 5 7 8 2 5 5 2 5 5 37 38 37 165 164 165 ++174 174 174 163 162 163 154 154 154 165 164 165 167 166 167 60 73 81 ++6 6 6 4 0 0 4 0 0 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 0 0 6 6 6 41 54 63 156 155 156 158 157 158 153 152 153 ++156 155 156 165 164 165 137 136 137 26 28 28 0 0 0 2 2 2 ++4 4 5 4 4 4 2 0 0 7 12 15 31 96 139 64 123 161 ++90 154 193 64 123 161 90 154 193 90 154 193 64 123 161 90 154 193 ++90 154 193 90 154 193 90 154 193 90 154 193 90 154 193 90 154 193 ++90 154 193 90 154 193 90 154 193 101 161 196 101 161 196 101 161 196 ++101 161 196 101 161 196 101 161 196 101 161 196 101 161 196 136 185 209 ++101 161 196 136 185 209 26 108 161 22 40 52 7 11 13 5 7 8 ++2 5 5 2 5 5 2 5 5 2 2 1 37 38 37 158 157 158 ++174 174 174 154 154 154 156 155 156 167 166 167 165 164 165 37 38 37 ++4 0 0 4 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++3 1 0 4 0 0 60 73 81 157 156 157 163 162 163 153 152 153 ++158 157 158 167 166 167 137 136 137 26 28 28 2 0 0 2 2 2 ++4 5 5 4 4 4 4 0 0 7 12 15 24 86 132 26 108 161 ++37 112 160 64 123 161 90 154 193 64 123 161 90 154 193 90 154 193 ++90 154 193 90 154 193 90 154 193 90 154 193 90 154 193 90 154 193 ++90 154 193 101 161 196 90 154 193 101 161 196 101 161 196 101 161 196 ++101 161 196 101 161 196 101 161 196 136 185 209 101 161 196 136 185 209 ++90 154 193 35 83 115 13 16 17 13 16 17 7 11 13 3 6 7 ++5 7 8 6 6 6 3 4 3 2 2 1 30 32 34 154 154 154 ++167 166 167 154 154 154 154 154 154 174 174 174 165 164 165 37 38 37 ++6 6 6 4 0 0 6 6 6 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 0 0 4 0 0 41 54 63 163 162 163 166 165 166 154 154 154 ++163 162 163 174 174 174 137 136 137 26 28 28 0 0 0 2 2 2 ++4 5 5 4 4 5 1 1 2 6 10 14 28 67 93 18 97 151 ++18 97 151 18 97 151 26 108 161 37 112 160 37 112 160 90 154 193 ++64 123 161 90 154 193 90 154 193 90 154 193 90 154 193 101 161 196 ++90 154 193 101 161 196 101 161 196 90 154 193 101 161 196 101 161 196 ++101 161 196 101 161 196 101 161 196 136 185 209 90 154 193 16 89 141 ++13 20 25 7 11 13 5 7 8 5 7 8 2 5 5 4 5 5 ++3 4 3 4 5 5 3 4 3 0 0 0 37 38 37 158 157 158 ++174 174 174 158 157 158 158 157 158 167 166 167 174 174 174 41 54 63 ++4 0 0 3 2 2 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++1 1 1 4 0 0 60 73 81 165 164 165 174 174 174 158 157 158 ++167 166 167 174 174 174 153 152 153 26 28 28 2 0 0 2 2 2 ++4 5 5 4 4 4 4 0 0 7 12 15 10 87 144 10 87 144 ++18 97 151 18 97 151 18 97 151 26 108 161 26 108 161 26 108 161 ++26 108 161 37 112 160 53 118 160 90 154 193 90 154 193 90 154 193 ++90 154 193 90 154 193 101 161 196 101 161 196 101 161 196 101 161 196 ++101 161 196 136 185 209 90 154 193 26 108 161 22 40 52 13 16 17 ++7 11 13 3 6 7 5 7 8 5 7 8 2 5 5 4 5 5 ++4 5 5 6 6 6 3 4 3 0 0 0 30 32 34 158 157 158 ++174 174 174 156 155 156 155 154 155 165 164 165 154 153 154 37 38 37 ++4 0 0 4 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 0 0 4 0 0 60 73 81 167 166 167 174 174 174 163 162 163 ++174 174 174 174 174 174 153 152 153 26 28 28 0 0 0 3 3 3 ++5 5 5 4 4 4 1 1 2 7 12 15 28 67 93 18 97 151 ++18 97 151 18 97 151 18 97 151 18 97 151 18 97 151 26 108 161 ++26 108 161 26 108 161 26 108 161 26 108 161 26 108 161 26 108 161 ++90 154 193 26 108 161 90 154 193 90 154 193 90 154 193 101 161 196 ++101 161 196 26 108 161 22 40 52 13 16 17 7 11 13 2 5 5 ++2 5 5 6 6 6 2 5 5 4 5 5 4 5 5 4 5 5 ++3 4 3 5 5 5 3 4 3 2 0 0 30 32 34 137 136 137 ++153 152 153 137 136 137 131 129 131 137 136 137 131 129 131 37 38 37 ++4 0 0 4 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++1 1 1 4 0 0 60 73 81 167 166 167 174 174 174 166 165 166 ++174 174 174 177 184 187 153 152 153 30 32 34 1 0 0 3 3 3 ++5 5 5 4 3 3 4 0 0 7 12 15 10 87 144 10 87 144 ++18 97 151 18 97 151 18 97 151 26 108 161 26 108 161 26 108 161 ++26 108 161 26 108 161 26 108 161 26 108 161 26 108 161 26 108 161 ++26 108 161 26 108 161 26 108 161 90 154 193 90 154 193 26 108 161 ++35 83 115 13 16 17 7 11 13 5 7 8 3 6 7 5 7 8 ++2 5 5 6 6 6 4 5 5 4 5 5 3 4 3 4 5 5 ++3 4 3 6 6 6 3 4 3 0 0 0 26 28 28 125 124 125 ++131 129 131 125 124 125 125 124 125 131 129 131 131 129 131 37 38 37 ++4 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++3 1 0 4 0 0 60 73 81 174 174 174 177 184 187 167 166 167 ++174 174 174 177 184 187 153 152 153 30 32 34 0 0 0 3 3 3 ++5 5 5 4 4 4 1 1 2 6 10 14 28 67 93 18 97 151 ++18 97 151 18 97 151 18 97 151 18 97 151 18 97 151 26 108 161 ++26 108 161 26 108 161 26 108 161 26 108 161 26 108 161 26 108 161 ++26 108 161 90 154 193 26 108 161 26 108 161 24 86 132 13 20 25 ++7 11 13 13 20 25 22 40 52 5 7 8 3 4 3 3 4 3 ++4 5 5 3 4 3 4 5 5 3 4 3 4 5 5 3 4 3 ++4 4 4 5 5 5 3 3 3 2 0 0 26 28 28 125 124 125 ++137 136 137 125 124 125 125 124 125 137 136 137 131 129 131 37 38 37 ++0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++1 1 1 4 0 0 60 73 81 174 174 174 177 184 187 174 174 174 ++174 174 174 190 197 201 157 156 157 30 32 34 1 0 0 3 3 3 ++5 5 5 4 3 3 4 0 0 7 12 15 10 87 144 10 87 144 ++18 97 151 19 95 150 19 95 150 18 97 151 18 97 151 26 108 161 ++18 97 151 26 108 161 26 108 161 26 108 161 26 108 161 90 154 193 ++26 108 161 26 108 161 26 108 161 22 40 52 2 5 5 3 4 3 ++28 67 93 37 112 160 34 86 122 2 5 5 3 4 3 3 4 3 ++3 4 3 3 4 3 3 4 3 2 2 1 3 4 3 4 4 4 ++4 5 5 5 5 5 3 3 3 0 0 0 26 28 28 131 129 131 ++137 136 137 125 124 125 125 124 125 137 136 137 131 129 131 37 38 37 ++0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 0 0 4 0 0 60 73 81 174 174 174 177 184 187 174 174 174 ++174 174 174 190 197 201 158 157 158 30 32 34 0 0 0 2 2 2 ++5 5 5 4 4 4 1 1 2 6 10 14 28 67 93 18 97 151 ++10 87 144 19 95 150 19 95 150 18 97 151 18 97 151 18 97 151 ++26 108 161 26 108 161 26 108 161 26 108 161 26 108 161 26 108 161 ++18 97 151 22 40 52 2 5 5 2 2 1 22 40 52 26 108 161 ++90 154 193 37 112 160 22 40 52 3 4 3 13 20 25 22 30 35 ++3 6 7 1 1 1 2 2 2 6 9 11 5 5 5 4 3 3 ++4 4 4 5 5 5 3 3 3 2 0 0 26 28 28 131 129 131 ++137 136 137 125 124 125 125 124 125 137 136 137 131 129 131 37 38 37 ++0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++1 1 1 4 0 0 60 73 81 177 184 187 193 200 203 174 174 174 ++177 184 187 193 200 203 163 162 163 30 32 34 4 0 0 2 2 2 ++5 5 5 4 3 3 4 0 0 6 10 14 24 86 132 10 87 144 ++10 87 144 10 87 144 19 95 150 19 95 150 19 95 150 18 97 151 ++26 108 161 26 108 161 26 108 161 90 154 193 26 108 161 28 67 93 ++6 10 14 2 5 5 13 20 25 24 86 132 37 112 160 90 154 193 ++10 87 144 7 12 15 2 5 5 28 67 93 37 112 160 28 67 93 ++2 2 1 7 12 15 35 83 115 28 67 93 3 6 7 1 0 0 ++4 4 4 5 5 5 3 3 3 0 0 0 26 28 28 131 129 131 ++137 136 137 125 124 125 125 124 125 137 136 137 131 129 131 37 38 37 ++0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 0 0 4 0 0 60 73 81 174 174 174 190 197 201 174 174 174 ++177 184 187 193 200 203 163 162 163 30 32 34 0 0 0 2 2 2 ++5 5 5 4 4 4 1 1 2 6 10 14 28 67 93 10 87 144 ++10 87 144 16 89 141 19 95 150 10 87 144 26 108 161 26 108 161 ++26 108 161 26 108 161 26 108 161 28 67 93 6 10 14 1 1 2 ++7 12 15 28 67 93 26 108 161 16 89 141 24 86 132 21 29 34 ++3 4 3 21 29 34 37 112 160 37 112 160 27 99 146 21 29 34 ++21 29 34 26 108 161 90 154 193 35 83 115 1 1 2 2 0 0 ++4 4 4 5 5 5 3 3 3 2 0 0 26 28 28 125 124 125 ++137 136 137 125 124 125 125 124 125 137 136 137 131 129 131 37 38 37 ++0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++3 1 0 4 0 0 60 73 81 193 200 203 193 200 203 174 174 174 ++190 197 201 193 200 203 165 164 165 37 38 37 4 0 0 2 2 2 ++5 5 5 4 3 3 4 0 0 6 10 14 24 86 132 10 87 144 ++10 87 144 10 87 144 16 89 141 18 97 151 18 97 151 10 87 144 ++24 86 132 24 86 132 13 20 25 4 5 7 4 5 7 22 40 52 ++18 97 151 37 112 160 26 108 161 7 12 15 1 1 1 0 0 0 ++28 67 93 37 112 160 26 108 161 28 67 93 22 40 52 28 67 93 ++26 108 161 90 154 193 26 108 161 10 87 144 0 0 0 2 0 0 ++4 4 4 5 5 5 3 3 3 0 0 0 26 28 28 131 129 131 ++137 136 137 125 124 125 125 124 125 137 136 137 131 129 131 37 38 37 ++0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 0 0 6 6 6 60 73 81 174 174 174 193 200 203 174 174 174 ++190 197 201 193 200 203 165 164 165 30 32 34 0 0 0 2 2 2 ++5 5 5 4 4 4 1 1 2 6 10 14 28 67 93 10 87 144 ++10 87 144 10 87 144 10 87 144 18 97 151 28 67 93 6 10 14 ++0 0 0 1 1 2 4 5 7 13 20 25 16 89 141 26 108 161 ++26 108 161 26 108 161 24 86 132 6 9 11 2 3 3 22 40 52 ++37 112 160 16 89 141 22 40 52 28 67 93 26 108 161 26 108 161 ++90 154 193 26 108 161 26 108 161 28 67 93 1 1 1 4 0 0 ++4 4 4 5 5 5 3 3 3 4 0 0 26 28 28 124 126 130 ++137 136 137 125 124 125 125 124 125 137 136 137 131 129 131 37 38 37 ++0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 0 0 4 0 0 60 73 81 193 200 203 193 200 203 174 174 174 ++193 200 203 193 200 203 167 166 167 37 38 37 4 0 0 2 2 2 ++5 5 5 4 4 4 4 0 0 6 10 14 28 67 93 10 87 144 ++10 87 144 10 87 144 18 97 151 10 87 144 13 20 25 4 5 7 ++1 1 2 1 1 1 22 40 52 26 108 161 26 108 161 26 108 161 ++26 108 161 26 108 161 26 108 161 24 86 132 22 40 52 22 40 52 ++22 40 52 22 40 52 10 87 144 26 108 161 26 108 161 26 108 161 ++26 108 161 26 108 161 90 154 193 10 87 144 0 0 0 4 0 0 ++4 4 4 5 5 5 3 3 3 0 0 0 26 28 28 131 129 131 ++137 136 137 125 124 125 125 124 125 137 136 137 131 129 131 37 38 37 ++0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 0 0 6 6 6 60 73 81 174 174 174 220 221 221 174 174 174 ++190 197 201 205 212 215 167 166 167 30 32 34 0 0 0 2 2 2 ++5 5 5 4 4 4 1 1 2 6 10 14 28 67 93 10 87 144 ++10 87 144 10 87 144 10 87 144 10 87 144 22 40 52 1 1 2 ++2 0 0 1 1 2 24 86 132 26 108 161 26 108 161 26 108 161 ++26 108 161 19 95 150 16 89 141 10 87 144 22 40 52 22 40 52 ++10 87 144 26 108 161 37 112 160 26 108 161 26 108 161 26 108 161 ++26 108 161 26 108 161 26 108 161 28 67 93 2 0 0 3 1 0 ++4 4 4 5 5 5 3 3 3 2 0 0 26 28 28 131 129 131 ++137 136 137 125 124 125 125 124 125 137 136 137 131 129 131 37 38 37 ++0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 0 0 4 0 0 60 73 81 220 221 221 190 197 201 174 174 174 ++193 200 203 193 200 203 174 174 174 37 38 37 4 0 0 2 2 2 ++5 5 5 4 4 4 3 2 2 1 1 2 13 20 25 10 87 144 ++10 87 144 10 87 144 10 87 144 10 87 144 10 87 144 13 20 25 ++13 20 25 22 40 52 10 87 144 18 97 151 18 97 151 26 108 161 ++10 87 144 13 20 25 6 10 14 21 29 34 24 86 132 18 97 151 ++26 108 161 26 108 161 26 108 161 26 108 161 26 108 161 26 108 161 ++26 108 161 90 154 193 18 97 151 13 20 25 0 0 0 4 3 3 ++4 4 4 5 5 5 3 3 3 0 0 0 26 28 28 131 129 131 ++137 136 137 125 124 125 125 124 125 137 136 137 131 129 131 37 38 37 ++0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 0 0 6 6 6 60 73 81 174 174 174 220 221 221 174 174 174 ++190 197 201 220 221 221 167 166 167 30 32 34 1 0 0 2 2 2 ++5 5 5 4 4 4 4 4 5 2 5 5 4 5 7 13 20 25 ++28 67 93 10 87 144 10 87 144 10 87 144 10 87 144 10 87 144 ++10 87 144 10 87 144 18 97 151 10 87 144 18 97 151 18 97 151 ++28 67 93 2 3 3 0 0 0 28 67 93 26 108 161 26 108 161 ++26 108 161 26 108 161 26 108 161 26 108 161 26 108 161 26 108 161 ++26 108 161 10 87 144 13 20 25 1 1 2 3 2 2 4 4 4 ++4 4 4 5 5 5 3 3 3 2 0 0 26 28 28 131 129 131 ++137 136 137 125 124 125 125 124 125 137 136 137 131 129 131 37 38 37 ++0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 0 0 4 0 0 60 73 81 220 221 221 190 197 201 174 174 174 ++193 200 203 193 200 203 174 174 174 26 28 28 4 0 0 4 3 3 ++5 5 5 4 4 4 4 4 4 4 4 5 1 1 2 2 5 5 ++4 5 7 22 40 52 10 87 144 10 87 144 18 97 151 10 87 144 ++10 87 144 10 87 144 10 87 144 10 87 144 10 87 144 18 97 151 ++10 87 144 28 67 93 22 40 52 10 87 144 26 108 161 18 97 151 ++18 97 151 18 97 151 26 108 161 26 108 161 26 108 161 26 108 161 ++22 40 52 1 1 2 0 0 0 2 3 3 4 4 4 4 4 4 ++4 4 4 5 5 5 4 4 4 0 0 0 26 28 28 131 129 131 ++137 136 137 125 124 125 125 124 125 137 136 137 131 129 131 37 38 37 ++0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 0 0 6 6 6 60 73 81 174 174 174 220 221 221 174 174 174 ++190 197 201 220 221 221 190 197 201 41 54 63 4 0 0 2 2 2 ++6 6 6 4 4 4 4 4 4 4 4 5 4 4 5 3 3 3 ++1 1 2 1 1 2 6 10 14 22 40 52 10 87 144 18 97 151 ++18 97 151 10 87 144 10 87 144 10 87 144 18 97 151 10 87 144 ++10 87 144 18 97 151 26 108 161 18 97 151 18 97 151 10 87 144 ++26 108 161 26 108 161 26 108 161 10 87 144 28 67 93 6 10 14 ++1 1 2 1 1 2 4 3 3 4 4 5 4 4 4 4 4 4 ++5 5 5 5 5 5 1 1 1 4 0 0 37 51 59 137 136 137 ++137 136 137 125 124 125 125 124 125 137 136 137 131 129 131 37 38 37 ++0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 0 0 4 0 0 60 73 81 220 221 221 193 200 203 174 174 174 ++193 200 203 193 200 203 220 221 221 137 136 137 13 16 17 4 0 0 ++2 2 2 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 ++4 4 5 4 3 3 1 1 2 4 5 7 13 20 25 28 67 93 ++10 87 144 10 87 144 10 87 144 10 87 144 10 87 144 10 87 144 ++10 87 144 18 97 151 18 97 151 10 87 144 18 97 151 26 108 161 ++26 108 161 18 97 151 28 67 93 6 10 14 0 0 0 0 0 0 ++2 3 3 4 5 5 4 4 5 4 4 4 4 4 4 5 5 5 ++3 3 3 1 1 1 0 0 0 16 19 21 125 124 125 137 136 137 ++131 129 131 125 124 125 125 124 125 137 136 137 131 129 131 37 38 37 ++0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 0 0 6 6 6 60 73 81 174 174 174 220 221 221 174 174 174 ++193 200 203 190 197 201 220 221 221 220 221 221 153 152 153 30 32 34 ++0 0 0 0 0 0 2 2 2 4 4 4 4 4 4 4 4 4 ++4 4 4 4 5 5 4 5 7 1 1 2 1 1 2 4 5 7 ++13 20 25 28 67 93 10 87 144 18 97 151 10 87 144 10 87 144 ++10 87 144 10 87 144 10 87 144 18 97 151 26 108 161 18 97 151 ++28 67 93 7 12 15 0 0 0 0 0 0 2 2 1 4 4 4 ++4 5 5 4 5 5 4 4 4 4 4 4 3 3 3 0 0 0 ++0 0 0 0 0 0 37 38 37 125 124 125 158 157 158 131 129 131 ++125 124 125 125 124 125 125 124 125 137 136 137 131 129 131 37 38 37 ++0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 3 3 4 0 0 41 54 63 193 200 203 220 221 221 174 174 174 ++193 200 203 193 200 203 193 200 203 220 221 221 244 246 246 193 200 203 ++120 125 127 5 5 5 1 0 0 0 0 0 1 1 1 4 4 4 ++4 4 4 4 4 4 4 5 5 4 5 5 4 4 5 1 1 2 ++4 5 7 4 5 7 22 40 52 10 87 144 10 87 144 10 87 144 ++10 87 144 10 87 144 18 97 151 10 87 144 10 87 144 13 20 25 ++4 5 7 2 3 3 1 1 2 4 4 4 4 5 5 4 4 4 ++4 4 4 4 4 4 4 4 4 1 1 1 0 0 0 1 1 2 ++24 26 27 60 74 84 153 152 153 163 162 163 137 136 137 125 124 125 ++125 124 125 125 124 125 125 124 125 137 136 137 125 124 125 26 28 28 ++0 0 0 3 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 0 0 6 6 6 26 28 28 156 155 156 220 221 221 220 221 221 ++174 174 174 193 200 203 193 200 203 193 200 203 205 212 215 220 221 221 ++220 221 221 167 166 167 60 73 81 7 11 13 0 0 0 0 0 0 ++3 3 3 4 4 4 4 4 4 4 4 4 4 4 5 4 4 5 ++4 4 5 1 1 2 1 1 2 4 5 7 22 40 52 10 87 144 ++10 87 144 10 87 144 10 87 144 22 40 52 4 5 7 1 1 2 ++1 1 2 4 4 5 4 4 4 4 4 4 4 4 4 4 4 4 ++5 5 5 2 2 2 0 0 0 4 0 0 16 19 21 60 73 81 ++137 136 137 167 166 167 158 157 158 137 136 137 131 129 131 131 129 131 ++125 124 125 125 124 125 131 129 131 155 154 155 60 74 84 5 7 8 ++0 0 0 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++5 5 5 4 0 0 4 0 0 60 73 81 193 200 203 220 221 221 ++193 200 203 193 200 203 193 200 203 193 200 203 205 212 215 220 221 221 ++220 221 221 220 221 221 220 221 221 137 136 137 43 57 68 6 6 6 ++4 0 0 1 1 1 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 5 4 4 5 3 2 2 1 1 2 2 5 5 13 20 25 ++22 40 52 22 40 52 13 20 25 2 3 3 1 1 2 3 3 3 ++4 5 7 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++1 1 1 0 0 0 2 3 3 41 54 63 131 129 131 166 165 166 ++166 165 166 155 154 155 153 152 153 137 136 137 137 136 137 125 124 125 ++125 124 125 137 136 137 137 136 137 125 124 125 37 38 37 4 3 3 ++4 3 3 5 5 5 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 3 3 6 6 6 6 6 6 13 16 17 60 73 81 167 166 167 ++220 221 221 220 221 221 220 221 221 193 200 203 193 200 203 193 200 203 ++205 212 215 220 221 221 220 221 221 244 246 246 205 212 215 125 124 125 ++24 26 27 0 0 0 0 0 0 2 2 2 5 5 5 5 5 5 ++4 4 4 4 4 4 4 4 4 4 4 5 1 1 2 4 5 7 ++4 5 7 4 5 7 1 1 2 3 2 2 4 4 5 4 4 4 ++4 4 4 4 4 4 5 5 5 4 4 4 0 0 0 0 0 0 ++2 0 0 26 28 28 125 124 125 174 174 174 174 174 174 166 165 166 ++156 155 156 153 152 153 137 136 137 137 136 137 131 129 131 137 136 137 ++137 136 137 137 136 137 60 74 84 30 32 34 4 0 0 4 0 0 ++5 5 5 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++5 5 5 6 6 6 4 0 0 4 0 0 6 6 6 26 28 28 ++125 124 125 174 174 174 220 221 221 220 221 221 220 221 221 193 200 203 ++205 212 215 220 221 221 205 212 215 220 221 221 220 221 221 244 246 246 ++193 200 203 60 74 84 13 16 17 4 0 0 0 0 0 3 3 3 ++5 5 5 5 5 5 4 4 4 4 4 4 4 4 5 3 3 3 ++1 1 2 3 3 3 4 4 5 4 4 5 4 4 4 4 4 4 ++5 5 5 5 5 5 2 2 2 0 0 0 0 0 0 13 16 17 ++60 74 84 174 174 174 193 200 203 174 174 174 167 166 167 163 162 163 ++153 152 153 153 152 153 137 136 137 137 136 137 153 152 153 137 136 137 ++125 124 125 41 54 63 24 26 27 4 0 0 4 0 0 5 5 5 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 3 3 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 ++6 6 6 37 38 37 131 129 131 220 221 221 220 221 221 220 221 221 ++193 200 203 193 200 203 220 221 221 205 212 215 220 221 221 244 246 246 ++244 246 246 244 246 246 174 174 174 41 54 63 0 0 0 0 0 0 ++0 0 0 4 4 4 5 5 5 5 5 5 4 4 4 4 4 5 ++4 4 5 4 4 5 4 4 4 4 4 4 6 6 6 6 6 6 ++3 3 3 0 0 0 2 0 0 13 16 17 60 73 81 156 155 156 ++220 221 221 193 200 203 174 174 174 165 164 165 163 162 163 154 153 154 ++153 152 153 153 152 153 158 157 158 163 162 163 137 136 137 60 73 81 ++13 16 17 4 0 0 4 0 0 4 3 3 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++5 5 5 4 3 3 4 3 3 6 6 6 6 6 6 6 6 6 ++6 6 6 6 6 6 6 6 6 37 38 37 167 166 167 244 246 246 ++244 246 246 220 221 221 205 212 215 205 212 215 220 221 221 193 200 203 ++220 221 221 244 246 246 244 246 246 244 246 246 137 136 137 37 38 37 ++3 2 2 0 0 0 1 1 1 5 5 5 5 5 5 4 4 4 ++4 4 4 4 4 4 4 4 4 5 5 5 4 4 4 1 1 1 ++0 0 0 5 5 5 43 57 68 153 152 153 193 200 203 220 221 221 ++177 184 187 174 174 174 167 166 167 166 165 166 158 157 158 157 156 157 ++158 157 158 166 165 166 156 155 156 85 115 134 13 16 17 4 0 0 ++4 0 0 4 0 0 5 5 5 5 5 5 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++5 5 5 4 3 3 6 6 6 6 6 6 4 0 0 6 6 6 ++6 6 6 6 6 6 6 6 6 6 6 6 13 16 17 60 73 81 ++177 184 187 220 221 221 220 221 221 220 221 221 205 212 215 220 221 221 ++220 221 221 205 212 215 220 221 221 244 246 246 244 246 246 205 212 215 ++125 124 125 30 32 34 0 0 0 0 0 0 2 2 2 5 5 5 ++4 4 4 4 4 4 4 4 4 1 1 1 0 0 0 1 0 0 ++37 38 37 131 129 131 205 212 215 220 221 221 193 200 203 174 174 174 ++174 174 174 174 174 174 167 166 167 165 164 165 166 165 166 167 166 167 ++158 157 158 125 124 125 37 38 37 4 0 0 4 0 0 4 0 0 ++4 3 3 5 5 5 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 5 5 5 4 3 3 4 3 3 6 6 6 6 6 6 ++4 0 0 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 ++26 28 28 125 124 125 205 212 215 220 221 221 220 221 221 220 221 221 ++205 212 215 220 221 221 205 212 215 220 221 221 220 221 221 244 246 246 ++244 246 246 190 197 201 60 74 84 16 19 21 4 0 0 0 0 0 ++0 0 0 0 0 0 0 0 0 0 0 0 16 19 21 120 125 127 ++177 184 187 220 221 221 205 212 215 177 184 187 174 174 174 177 184 187 ++174 174 174 174 174 174 167 166 167 174 174 174 166 165 166 137 136 137 ++60 73 81 13 16 17 4 0 0 4 0 0 4 3 3 6 6 6 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++5 5 5 4 3 3 5 5 5 4 3 3 6 6 6 4 0 0 ++6 6 6 6 6 6 4 0 0 6 6 6 4 0 0 6 6 6 ++6 6 6 6 6 6 37 38 37 137 136 137 193 200 203 220 221 221 ++220 221 221 205 212 215 220 221 221 205 212 215 205 212 215 220 221 221 ++220 221 221 220 221 221 244 246 246 166 165 166 43 57 68 2 2 2 ++0 0 0 4 0 0 16 19 21 60 73 81 157 156 157 202 210 214 ++220 221 221 193 200 203 177 184 187 177 184 187 177 184 187 174 174 174 ++174 174 174 174 174 174 174 174 174 157 156 157 60 74 84 24 26 27 ++4 0 0 4 0 0 4 0 0 6 6 6 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 5 5 5 4 3 3 5 5 5 6 6 6 ++6 6 6 4 0 0 6 6 6 6 6 6 6 6 6 4 0 0 ++4 0 0 4 0 0 6 6 6 24 26 27 60 73 81 167 166 167 ++220 221 221 220 221 221 220 221 221 205 212 215 205 212 215 205 212 215 ++205 212 215 220 221 221 220 221 221 220 221 221 205 212 215 137 136 137 ++60 74 84 125 124 125 137 136 137 190 197 201 220 221 221 193 200 203 ++177 184 187 177 184 187 177 184 187 174 174 174 174 174 174 177 184 187 ++190 197 201 174 174 174 125 124 125 37 38 37 6 6 6 4 0 0 ++4 0 0 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 5 5 5 5 5 5 4 3 3 6 6 6 ++4 0 0 6 6 6 6 6 6 6 6 6 4 0 0 6 6 6 ++6 6 6 6 6 6 4 0 0 4 0 0 6 6 6 6 6 6 ++125 124 125 193 200 203 244 246 246 220 221 221 205 212 215 205 212 215 ++205 212 215 193 200 203 205 212 215 205 212 215 220 221 221 220 221 221 ++193 200 203 193 200 203 205 212 215 193 200 203 193 200 203 177 184 187 ++190 197 201 190 197 201 174 174 174 190 197 201 193 200 203 190 197 201 ++153 152 153 60 73 81 4 0 0 4 0 0 4 0 0 3 2 2 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 4 3 3 ++6 6 6 4 3 3 4 3 3 4 3 3 6 6 6 6 6 6 ++4 0 0 6 6 6 6 6 6 6 6 6 4 0 0 4 0 0 ++4 0 0 26 28 28 131 129 131 220 221 221 244 246 246 220 221 221 ++205 212 215 193 200 203 205 212 215 193 200 203 193 200 203 205 212 215 ++220 221 221 193 200 203 193 200 203 193 200 203 190 197 201 174 174 174 ++174 174 174 190 197 201 193 200 203 193 200 203 167 166 167 125 124 125 ++6 6 6 4 0 0 4 0 0 4 3 3 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 ++5 5 5 4 3 3 5 5 5 6 6 6 4 3 3 5 5 5 ++6 6 6 6 6 6 4 0 0 6 6 6 6 6 6 6 6 6 ++4 0 0 4 0 0 6 6 6 41 54 63 158 157 158 220 221 221 ++220 221 221 220 221 221 193 200 203 193 200 203 193 200 203 190 197 201 ++190 197 201 190 197 201 190 197 201 190 197 201 174 174 174 193 200 203 ++193 200 203 220 221 221 174 174 174 125 124 125 37 38 37 4 0 0 ++4 0 0 4 3 3 6 6 6 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 5 5 5 4 3 3 4 3 3 4 3 3 5 5 5 ++4 3 3 6 6 6 5 5 5 4 3 3 6 6 6 6 6 6 ++6 6 6 6 6 6 4 0 0 4 0 0 13 16 17 60 73 81 ++174 174 174 220 221 221 220 221 221 205 212 215 190 197 201 174 174 174 ++193 200 203 174 174 174 190 197 201 174 174 174 193 200 203 220 221 221 ++193 200 203 131 129 131 37 38 37 6 6 6 4 0 0 4 0 0 ++6 6 6 6 6 6 4 3 3 5 5 5 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 ++5 5 5 4 3 3 4 3 3 5 5 5 4 3 3 4 3 3 ++5 5 5 6 6 6 6 6 6 4 0 0 6 6 6 6 6 6 ++6 6 6 125 124 125 174 174 174 220 221 221 220 221 221 193 200 203 ++193 200 203 193 200 203 193 200 203 193 200 203 220 221 221 158 157 158 ++60 73 81 6 6 6 4 0 0 4 0 0 5 5 5 6 6 6 ++5 5 5 5 5 5 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 5 5 5 5 5 5 4 3 3 5 5 5 4 3 3 ++5 5 5 5 5 5 6 6 6 6 6 6 4 0 0 4 0 0 ++4 0 0 4 0 0 26 28 28 125 124 125 174 174 174 193 200 203 ++193 200 203 174 174 174 193 200 203 167 166 167 125 124 125 6 6 6 ++6 6 6 6 6 6 4 0 0 6 6 6 6 6 6 5 5 5 ++4 3 3 5 5 5 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 ++4 3 3 6 6 6 4 0 0 6 6 6 6 6 6 6 6 6 ++6 6 6 4 0 0 4 0 0 6 6 6 37 38 37 125 124 125 ++153 152 153 131 129 131 125 124 125 37 38 37 6 6 6 6 6 6 ++6 6 6 4 0 0 6 6 6 6 6 6 4 3 3 5 5 5 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 5 5 5 5 5 5 4 3 3 5 5 5 4 3 3 ++6 6 6 6 6 6 4 0 0 4 0 0 6 6 6 6 6 6 ++24 26 27 24 26 27 6 6 6 6 6 6 6 6 6 4 0 0 ++6 6 6 6 6 6 4 0 0 6 6 6 5 5 5 4 3 3 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 5 5 5 4 3 3 5 5 5 6 6 6 ++4 0 0 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 ++6 6 6 6 6 6 6 6 6 4 0 0 6 6 6 6 6 6 ++4 0 0 6 6 6 6 6 6 4 3 3 5 5 5 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 5 5 5 4 3 3 5 5 5 ++5 5 5 5 5 5 4 0 0 6 6 6 4 0 0 6 6 6 ++6 6 6 6 6 6 6 6 6 4 0 0 6 6 6 4 0 0 ++6 6 6 4 3 3 5 5 5 4 3 3 5 5 5 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 ++4 3 3 6 6 6 4 3 3 6 6 6 6 6 6 6 6 6 ++4 0 0 6 6 6 4 0 0 6 6 6 6 6 6 6 6 6 ++6 6 6 4 3 3 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 5 5 5 4 3 3 5 5 5 4 0 0 6 6 6 ++6 6 6 4 0 0 6 6 6 6 6 6 4 0 0 6 6 6 ++4 3 3 5 5 5 5 5 5 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 5 5 5 4 3 3 5 5 5 6 6 6 4 3 3 ++4 3 3 6 6 6 6 6 6 4 3 3 6 6 6 4 3 3 ++5 5 5 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 5 5 5 4 3 3 6 6 6 ++5 5 5 4 3 3 4 3 3 4 3 3 5 5 5 5 5 5 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 4 3 3 ++5 5 5 4 3 3 5 5 5 5 5 5 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ++4 4 4 4 4 4 +diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c +index a159b63..4ab532d 100644 +--- a/drivers/video/udlfb.c ++++ b/drivers/video/udlfb.c +@@ -620,11 +620,11 @@ int dlfb_handle_damage(struct dlfb_data *dev, int x, int y, + dlfb_urb_completion(urb); + + error: +- atomic_add(bytes_sent, &dev->bytes_sent); +- atomic_add(bytes_identical, &dev->bytes_identical); +- atomic_add(width*height*2, &dev->bytes_rendered); ++ atomic_add_unchecked(bytes_sent, &dev->bytes_sent); ++ atomic_add_unchecked(bytes_identical, &dev->bytes_identical); ++ atomic_add_unchecked(width*height*2, &dev->bytes_rendered); + end_cycles = get_cycles(); +- atomic_add(((unsigned int) ((end_cycles - start_cycles) ++ atomic_add_unchecked(((unsigned int) ((end_cycles - start_cycles) + >> 10)), /* Kcycles */ + &dev->cpu_kcycles_used); + +@@ -745,11 +745,11 @@ static void dlfb_dpy_deferred_io(struct fb_info *info, + dlfb_urb_completion(urb); + + error: +- atomic_add(bytes_sent, &dev->bytes_sent); +- atomic_add(bytes_identical, &dev->bytes_identical); +- atomic_add(bytes_rendered, &dev->bytes_rendered); ++ atomic_add_unchecked(bytes_sent, &dev->bytes_sent); ++ atomic_add_unchecked(bytes_identical, &dev->bytes_identical); ++ atomic_add_unchecked(bytes_rendered, &dev->bytes_rendered); + end_cycles = get_cycles(); +- atomic_add(((unsigned int) ((end_cycles - start_cycles) ++ atomic_add_unchecked(((unsigned int) ((end_cycles - start_cycles) + >> 10)), /* Kcycles */ + &dev->cpu_kcycles_used); + } +@@ -1373,7 +1373,7 @@ static ssize_t metrics_bytes_rendered_show(struct device *fbdev, + struct fb_info *fb_info = dev_get_drvdata(fbdev); + struct dlfb_data *dev = fb_info->par; + return snprintf(buf, PAGE_SIZE, "%u\n", +- atomic_read(&dev->bytes_rendered)); ++ atomic_read_unchecked(&dev->bytes_rendered)); + } + + static ssize_t metrics_bytes_identical_show(struct device *fbdev, +@@ -1381,7 +1381,7 @@ static ssize_t metrics_bytes_identical_show(struct device *fbdev, + struct fb_info *fb_info = dev_get_drvdata(fbdev); + struct dlfb_data *dev = fb_info->par; + return snprintf(buf, PAGE_SIZE, "%u\n", +- atomic_read(&dev->bytes_identical)); ++ atomic_read_unchecked(&dev->bytes_identical)); + } + + static ssize_t metrics_bytes_sent_show(struct device *fbdev, +@@ -1389,7 +1389,7 @@ static ssize_t metrics_bytes_sent_show(struct device *fbdev, + struct fb_info *fb_info = dev_get_drvdata(fbdev); + struct dlfb_data *dev = fb_info->par; + return snprintf(buf, PAGE_SIZE, "%u\n", +- atomic_read(&dev->bytes_sent)); ++ atomic_read_unchecked(&dev->bytes_sent)); + } + + static ssize_t metrics_cpu_kcycles_used_show(struct device *fbdev, +@@ -1397,7 +1397,7 @@ static ssize_t metrics_cpu_kcycles_used_show(struct device *fbdev, + struct fb_info *fb_info = dev_get_drvdata(fbdev); + struct dlfb_data *dev = fb_info->par; + return snprintf(buf, PAGE_SIZE, "%u\n", +- atomic_read(&dev->cpu_kcycles_used)); ++ atomic_read_unchecked(&dev->cpu_kcycles_used)); + } + + static ssize_t edid_show( +@@ -1457,10 +1457,10 @@ static ssize_t metrics_reset_store(struct device *fbdev, + struct fb_info *fb_info = dev_get_drvdata(fbdev); + struct dlfb_data *dev = fb_info->par; + +- atomic_set(&dev->bytes_rendered, 0); +- atomic_set(&dev->bytes_identical, 0); +- atomic_set(&dev->bytes_sent, 0); +- atomic_set(&dev->cpu_kcycles_used, 0); ++ atomic_set_unchecked(&dev->bytes_rendered, 0); ++ atomic_set_unchecked(&dev->bytes_identical, 0); ++ atomic_set_unchecked(&dev->bytes_sent, 0); ++ atomic_set_unchecked(&dev->cpu_kcycles_used, 0); + + return count; + } +diff --git a/drivers/video/uvesafb.c b/drivers/video/uvesafb.c +index b0e2a42..e2df3ad 100644 +--- a/drivers/video/uvesafb.c ++++ b/drivers/video/uvesafb.c +@@ -19,6 +19,7 @@ + #include <linux/io.h> + #include <linux/mutex.h> + #include <linux/slab.h> ++#include <linux/moduleloader.h> + #include <video/edid.h> + #include <video/uvesafb.h> + #ifdef CONFIG_X86 +@@ -569,10 +570,32 @@ static int __devinit uvesafb_vbe_getpmi(struct uvesafb_ktask *task, + if ((task->t.regs.eax & 0xffff) != 0x4f || task->t.regs.es < 0xc000) { + par->pmi_setpal = par->ypan = 0; + } else { ++ ++#ifdef CONFIG_PAX_KERNEXEC ++#ifdef CONFIG_MODULES ++ par->pmi_code = module_alloc_exec((u16)task->t.regs.ecx); ++#endif ++ if (!par->pmi_code) { ++ par->pmi_setpal = par->ypan = 0; ++ return 0; ++ } ++#endif ++ + par->pmi_base = (u16 *)phys_to_virt(((u32)task->t.regs.es << 4) + + task->t.regs.edi); ++ ++#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC) ++ pax_open_kernel(); ++ memcpy(par->pmi_code, par->pmi_base, (u16)task->t.regs.ecx); ++ pax_close_kernel(); ++ ++ par->pmi_start = ktva_ktla(par->pmi_code + par->pmi_base[1]); ++ par->pmi_pal = ktva_ktla(par->pmi_code + par->pmi_base[2]); ++#else + par->pmi_start = (u8 *)par->pmi_base + par->pmi_base[1]; + par->pmi_pal = (u8 *)par->pmi_base + par->pmi_base[2]; ++#endif ++ + printk(KERN_INFO "uvesafb: protected mode interface info at " + "%04x:%04x\n", + (u16)task->t.regs.es, (u16)task->t.regs.edi); +@@ -816,13 +839,14 @@ static int __devinit uvesafb_vbe_init(struct fb_info *info) + par->ypan = ypan; + + if (par->pmi_setpal || par->ypan) { ++#if !defined(CONFIG_MODULES) || !defined(CONFIG_PAX_KERNEXEC) + if (__supported_pte_mask & _PAGE_NX) { + par->pmi_setpal = par->ypan = 0; + printk(KERN_WARNING "uvesafb: NX protection is actively." + "We have better not to use the PMI.\n"); +- } else { ++ } else ++#endif + uvesafb_vbe_getpmi(task, par); +- } + } + #else + /* The protected mode interface is not available on non-x86. */ +@@ -1836,6 +1860,11 @@ out: + if (par->vbe_modes) + kfree(par->vbe_modes); + ++#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC) ++ if (par->pmi_code) ++ module_free_exec(NULL, par->pmi_code); ++#endif ++ + framebuffer_release(info); + return err; + } +@@ -1862,6 +1891,12 @@ static int uvesafb_remove(struct platform_device *dev) + kfree(par->vbe_state_orig); + if (par->vbe_state_saved) + kfree(par->vbe_state_saved); ++ ++#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC) ++ if (par->pmi_code) ++ module_free_exec(NULL, par->pmi_code); ++#endif ++ + } + + framebuffer_release(info); +diff --git a/drivers/video/vesafb.c b/drivers/video/vesafb.c +index 501b340..86bd4cf 100644 +--- a/drivers/video/vesafb.c ++++ b/drivers/video/vesafb.c +@@ -9,6 +9,7 @@ + */ + + #include <linux/module.h> ++#include <linux/moduleloader.h> + #include <linux/kernel.h> + #include <linux/errno.h> + #include <linux/string.h> +@@ -52,8 +53,8 @@ static int vram_remap __initdata; /* Set amount of memory to be used */ + static int vram_total __initdata; /* Set total amount of memory */ + static int pmi_setpal __read_mostly = 1; /* pmi for palette changes ??? */ + static int ypan __read_mostly; /* 0..nothing, 1..ypan, 2..ywrap */ +-static void (*pmi_start)(void) __read_mostly; +-static void (*pmi_pal) (void) __read_mostly; ++static void (*pmi_start)(void) __read_only; ++static void (*pmi_pal) (void) __read_only; + static int depth __read_mostly; + static int vga_compat __read_mostly; + /* --------------------------------------------------------------------- */ +@@ -233,6 +234,7 @@ static int __init vesafb_probe(struct platform_device *dev) + unsigned int size_vmode; + unsigned int size_remap; + unsigned int size_total; ++ void *pmi_code = NULL; + + if (screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) + return -ENODEV; +@@ -275,10 +277,6 @@ static int __init vesafb_probe(struct platform_device *dev) + size_remap = size_total; + vesafb_fix.smem_len = size_remap; + +-#ifndef __i386__ +- screen_info.vesapm_seg = 0; +-#endif +- + if (!request_mem_region(vesafb_fix.smem_start, size_total, "vesafb")) { + printk(KERN_WARNING + "vesafb: cannot reserve video memory at 0x%lx\n", +@@ -307,9 +305,21 @@ static int __init vesafb_probe(struct platform_device *dev) + printk(KERN_INFO "vesafb: mode is %dx%dx%d, linelength=%d, pages=%d\n", + vesafb_defined.xres, vesafb_defined.yres, vesafb_defined.bits_per_pixel, vesafb_fix.line_length, screen_info.pages); + ++#ifdef __i386__ ++ ++#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC) ++ pmi_code = module_alloc_exec(screen_info.vesapm_size); ++ if (!pmi_code) ++#elif !defined(CONFIG_PAX_KERNEXEC) ++ if (0) ++#endif ++ ++#endif ++ screen_info.vesapm_seg = 0; ++ + if (screen_info.vesapm_seg) { +- printk(KERN_INFO "vesafb: protected mode interface info at %04x:%04x\n", +- screen_info.vesapm_seg,screen_info.vesapm_off); ++ printk(KERN_INFO "vesafb: protected mode interface info at %04x:%04x %04x bytes\n", ++ screen_info.vesapm_seg,screen_info.vesapm_off,screen_info.vesapm_size); + } + + if (screen_info.vesapm_seg < 0xc000) +@@ -317,9 +327,25 @@ static int __init vesafb_probe(struct platform_device *dev) + + if (ypan || pmi_setpal) { + unsigned short *pmi_base; ++ + pmi_base = (unsigned short*)phys_to_virt(((unsigned long)screen_info.vesapm_seg << 4) + screen_info.vesapm_off); +- pmi_start = (void*)((char*)pmi_base + pmi_base[1]); +- pmi_pal = (void*)((char*)pmi_base + pmi_base[2]); ++ ++#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC) ++ pax_open_kernel(); ++ memcpy(pmi_code, pmi_base, screen_info.vesapm_size); ++#else ++ pmi_code = pmi_base; ++#endif ++ ++ pmi_start = (void*)((char*)pmi_code + pmi_base[1]); ++ pmi_pal = (void*)((char*)pmi_code + pmi_base[2]); ++ ++#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC) ++ pmi_start = ktva_ktla(pmi_start); ++ pmi_pal = ktva_ktla(pmi_pal); ++ pax_close_kernel(); ++#endif ++ + printk(KERN_INFO "vesafb: pmi: set display start = %p, set palette = %p\n",pmi_start,pmi_pal); + if (pmi_base[3]) { + printk(KERN_INFO "vesafb: pmi: ports = "); +@@ -488,6 +514,11 @@ static int __init vesafb_probe(struct platform_device *dev) + info->node, info->fix.id); + return 0; + err: ++ ++#if defined(__i386__) && defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC) ++ module_free_exec(NULL, pmi_code); ++#endif ++ + if (info->screen_base) + iounmap(info->screen_base); + framebuffer_release(info); +diff --git a/drivers/video/via/via_clock.h b/drivers/video/via/via_clock.h +index 88714ae..16c2e11 100644 +--- a/drivers/video/via/via_clock.h ++++ b/drivers/video/via/via_clock.h +@@ -56,7 +56,7 @@ struct via_clock { + + void (*set_engine_pll_state)(u8 state); + void (*set_engine_pll)(struct via_pll_config config); +-}; ++} __no_const; + + + static inline u32 get_pll_internal_frequency(u32 ref_freq, +diff --git a/drivers/xen/xen-pciback/conf_space.h b/drivers/xen/xen-pciback/conf_space.h +index e56c934..fc22f4b 100644 +--- a/drivers/xen/xen-pciback/conf_space.h ++++ b/drivers/xen/xen-pciback/conf_space.h +@@ -44,15 +44,15 @@ struct config_field { + struct { + conf_dword_write write; + conf_dword_read read; +- } dw; ++ } __no_const dw; + struct { + conf_word_write write; + conf_word_read read; +- } w; ++ } __no_const w; + struct { + conf_byte_write write; + conf_byte_read read; +- } b; ++ } __no_const b; + } u; + struct list_head list; + }; +diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c +index 014c8dd..6f3dfe6 100644 +--- a/fs/9p/vfs_inode.c ++++ b/fs/9p/vfs_inode.c +@@ -1303,7 +1303,7 @@ static void *v9fs_vfs_follow_link(struct dentry *dentry, struct nameidata *nd) + void + v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p) + { +- char *s = nd_get_link(nd); ++ const char *s = nd_get_link(nd); + + p9_debug(P9_DEBUG_VFS, " %s %s\n", + dentry->d_name.name, IS_ERR(s) ? "<error>" : s); +diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt +index e95d1b6..3454244 100644 +--- a/fs/Kconfig.binfmt ++++ b/fs/Kconfig.binfmt +@@ -89,7 +89,7 @@ config HAVE_AOUT + + config BINFMT_AOUT + tristate "Kernel support for a.out and ECOFF binaries" +- depends on HAVE_AOUT ++ depends on HAVE_AOUT && BROKEN + ---help--- + A.out (Assembler.OUTput) is a set of formats for libraries and + executables used in the earliest versions of UNIX. Linux used +diff --git a/fs/aio.c b/fs/aio.c +index e7f2fad..15ad8a4 100644 +--- a/fs/aio.c ++++ b/fs/aio.c +@@ -118,7 +118,7 @@ static int aio_setup_ring(struct kioctx *ctx) + size += sizeof(struct io_event) * nr_events; + nr_pages = (size + PAGE_SIZE-1) >> PAGE_SHIFT; + +- if (nr_pages < 0) ++ if (nr_pages <= 0) + return -EINVAL; + + nr_events = (PAGE_SIZE * nr_pages - sizeof(struct aio_ring)) / sizeof(struct io_event); +@@ -1440,18 +1440,19 @@ static ssize_t aio_fsync(struct kiocb *iocb) + static ssize_t aio_setup_vectored_rw(int type, struct kiocb *kiocb, bool compat) + { + ssize_t ret; ++ struct iovec iovstack; + + #ifdef CONFIG_COMPAT + if (compat) + ret = compat_rw_copy_check_uvector(type, + (struct compat_iovec __user *)kiocb->ki_buf, +- kiocb->ki_nbytes, 1, &kiocb->ki_inline_vec, ++ kiocb->ki_nbytes, 1, &iovstack, + &kiocb->ki_iovec, 1); + else + #endif + ret = rw_copy_check_uvector(type, + (struct iovec __user *)kiocb->ki_buf, +- kiocb->ki_nbytes, 1, &kiocb->ki_inline_vec, ++ kiocb->ki_nbytes, 1, &iovstack, + &kiocb->ki_iovec, 1); + if (ret < 0) + goto out; +@@ -1460,6 +1461,10 @@ static ssize_t aio_setup_vectored_rw(int type, struct kiocb *kiocb, bool compat) + if (ret < 0) + goto out; + ++ if (kiocb->ki_iovec == &iovstack) { ++ kiocb->ki_inline_vec = iovstack; ++ kiocb->ki_iovec = &kiocb->ki_inline_vec; ++ } + kiocb->ki_nr_segs = kiocb->ki_nbytes; + kiocb->ki_cur_seg = 0; + /* ki_nbytes/left now reflect bytes instead of segs */ +diff --git a/fs/attr.c b/fs/attr.c +index d94d1b6..f9bccd6 100644 +--- a/fs/attr.c ++++ b/fs/attr.c +@@ -99,6 +99,7 @@ int inode_newsize_ok(const struct inode *inode, loff_t offset) + unsigned long limit; + + limit = rlimit(RLIMIT_FSIZE); ++ gr_learn_resource(current, RLIMIT_FSIZE, (unsigned long)offset, 1); + if (limit != RLIM_INFINITY && offset > limit) + goto out_sig; + if (offset > inode->i_sb->s_maxbytes) +diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c +index da8876d..9f3e6d8 100644 +--- a/fs/autofs4/waitq.c ++++ b/fs/autofs4/waitq.c +@@ -61,7 +61,7 @@ static int autofs4_write(struct autofs_sb_info *sbi, + { + unsigned long sigpipe, flags; + mm_segment_t fs; +- const char *data = (const char *)addr; ++ const char __user *data = (const char __force_user *)addr; + ssize_t wr = 0; + + sigpipe = sigismember(¤t->pending.signal, SIGPIPE); +diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c +index e18da23..affc30e 100644 +--- a/fs/befs/linuxvfs.c ++++ b/fs/befs/linuxvfs.c +@@ -502,7 +502,7 @@ static void befs_put_link(struct dentry *dentry, struct nameidata *nd, void *p) + { + befs_inode_info *befs_ino = BEFS_I(dentry->d_inode); + if (befs_ino->i_flags & BEFS_LONG_SYMLINK) { +- char *link = nd_get_link(nd); ++ const char *link = nd_get_link(nd); + if (!IS_ERR(link)) + kfree(link); + } +diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c +index d146e18..12d1bd1 100644 +--- a/fs/binfmt_aout.c ++++ b/fs/binfmt_aout.c +@@ -16,6 +16,7 @@ + #include <linux/string.h> + #include <linux/fs.h> + #include <linux/file.h> ++#include <linux/security.h> + #include <linux/stat.h> + #include <linux/fcntl.h> + #include <linux/ptrace.h> +@@ -83,6 +84,8 @@ static int aout_core_dump(struct coredump_params *cprm) + #endif + # define START_STACK(u) ((void __user *)u.start_stack) + ++ memset(&dump, 0, sizeof(dump)); ++ + fs = get_fs(); + set_fs(KERNEL_DS); + has_dumped = 1; +@@ -94,10 +97,12 @@ static int aout_core_dump(struct coredump_params *cprm) + + /* If the size of the dump file exceeds the rlimit, then see what would happen + if we wrote the stack, but not the data area. */ ++ gr_learn_resource(current, RLIMIT_CORE, (dump.u_dsize + dump.u_ssize+1) * PAGE_SIZE, 1); + if ((dump.u_dsize + dump.u_ssize+1) * PAGE_SIZE > cprm->limit) + dump.u_dsize = 0; + + /* Make sure we have enough room to write the stack and data areas. */ ++ gr_learn_resource(current, RLIMIT_CORE, (dump.u_ssize + 1) * PAGE_SIZE, 1); + if ((dump.u_ssize + 1) * PAGE_SIZE > cprm->limit) + dump.u_ssize = 0; + +@@ -231,6 +236,8 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs) + rlim = rlimit(RLIMIT_DATA); + if (rlim >= RLIM_INFINITY) + rlim = ~0; ++ ++ gr_learn_resource(current, RLIMIT_DATA, ex.a_data + ex.a_bss, 1); + if (ex.a_data + ex.a_bss > rlim) + return -ENOMEM; + +@@ -265,6 +272,27 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs) + + install_exec_creds(bprm); + ++#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR) ++ current->mm->pax_flags = 0UL; ++#endif ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ if (!(N_FLAGS(ex) & F_PAX_PAGEEXEC)) { ++ current->mm->pax_flags |= MF_PAX_PAGEEXEC; ++ ++#ifdef CONFIG_PAX_EMUTRAMP ++ if (N_FLAGS(ex) & F_PAX_EMUTRAMP) ++ current->mm->pax_flags |= MF_PAX_EMUTRAMP; ++#endif ++ ++#ifdef CONFIG_PAX_MPROTECT ++ if (!(N_FLAGS(ex) & F_PAX_MPROTECT)) ++ current->mm->pax_flags |= MF_PAX_MPROTECT; ++#endif ++ ++ } ++#endif ++ + if (N_MAGIC(ex) == OMAGIC) { + unsigned long text_addr, map_size; + loff_t pos; +@@ -330,7 +358,7 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs) + } + + error = vm_mmap(bprm->file, N_DATADDR(ex), ex.a_data, +- PROT_READ | PROT_WRITE | PROT_EXEC, ++ PROT_READ | PROT_WRITE, + MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE, + fd_offset + ex.a_text); + if (error != N_DATADDR(ex)) { +diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c +index 16f7354..666524e 100644 +--- a/fs/binfmt_elf.c ++++ b/fs/binfmt_elf.c +@@ -32,6 +32,7 @@ + #include <linux/elf.h> + #include <linux/utsname.h> + #include <linux/coredump.h> ++#include <linux/xattr.h> + #include <asm/uaccess.h> + #include <asm/param.h> + #include <asm/page.h> +@@ -52,6 +53,10 @@ static int elf_core_dump(struct coredump_params *cprm); + #define elf_core_dump NULL + #endif + ++#ifdef CONFIG_PAX_MPROTECT ++static void elf_handle_mprotect(struct vm_area_struct *vma, unsigned long newflags); ++#endif ++ + #if ELF_EXEC_PAGESIZE > PAGE_SIZE + #define ELF_MIN_ALIGN ELF_EXEC_PAGESIZE + #else +@@ -71,6 +76,11 @@ static struct linux_binfmt elf_format = { + .load_binary = load_elf_binary, + .load_shlib = load_elf_library, + .core_dump = elf_core_dump, ++ ++#ifdef CONFIG_PAX_MPROTECT ++ .handle_mprotect= elf_handle_mprotect, ++#endif ++ + .min_coredump = ELF_EXEC_PAGESIZE, + }; + +@@ -78,6 +88,8 @@ static struct linux_binfmt elf_format = { + + static int set_brk(unsigned long start, unsigned long end) + { ++ unsigned long e = end; ++ + start = ELF_PAGEALIGN(start); + end = ELF_PAGEALIGN(end); + if (end > start) { +@@ -86,7 +98,7 @@ static int set_brk(unsigned long start, unsigned long end) + if (BAD_ADDR(addr)) + return addr; + } +- current->mm->start_brk = current->mm->brk = end; ++ current->mm->start_brk = current->mm->brk = e; + return 0; + } + +@@ -147,12 +159,13 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec, + elf_addr_t __user *u_rand_bytes; + const char *k_platform = ELF_PLATFORM; + const char *k_base_platform = ELF_BASE_PLATFORM; +- unsigned char k_rand_bytes[16]; ++ u32 k_rand_bytes[4]; + int items; + elf_addr_t *elf_info; + int ei_index = 0; + const struct cred *cred = current_cred(); + struct vm_area_struct *vma; ++ unsigned long saved_auxv[AT_VECTOR_SIZE]; + + /* + * In some cases (e.g. Hyper-Threading), we want to avoid L1 +@@ -194,8 +207,12 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec, + * Generate 16 random bytes for userspace PRNG seeding. + */ + get_random_bytes(k_rand_bytes, sizeof(k_rand_bytes)); +- u_rand_bytes = (elf_addr_t __user *) +- STACK_ALLOC(p, sizeof(k_rand_bytes)); ++ srandom32(k_rand_bytes[0] ^ random32()); ++ srandom32(k_rand_bytes[1] ^ random32()); ++ srandom32(k_rand_bytes[2] ^ random32()); ++ srandom32(k_rand_bytes[3] ^ random32()); ++ p = STACK_ROUND(p, sizeof(k_rand_bytes)); ++ u_rand_bytes = (elf_addr_t __user *) p; + if (__copy_to_user(u_rand_bytes, k_rand_bytes, sizeof(k_rand_bytes))) + return -EFAULT; + +@@ -307,9 +324,11 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec, + return -EFAULT; + current->mm->env_end = p; + ++ memcpy(saved_auxv, elf_info, ei_index * sizeof(elf_addr_t)); ++ + /* Put the elf_info on the stack in the right place. */ + sp = (elf_addr_t __user *)envp + 1; +- if (copy_to_user(sp, elf_info, ei_index * sizeof(elf_addr_t))) ++ if (copy_to_user(sp, saved_auxv, ei_index * sizeof(elf_addr_t))) + return -EFAULT; + return 0; + } +@@ -380,10 +399,10 @@ static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex, + { + struct elf_phdr *elf_phdata; + struct elf_phdr *eppnt; +- unsigned long load_addr = 0; ++ unsigned long load_addr = 0, pax_task_size = TASK_SIZE; + int load_addr_set = 0; + unsigned long last_bss = 0, elf_bss = 0; +- unsigned long error = ~0UL; ++ unsigned long error = -EINVAL; + unsigned long total_size; + int retval, i, size; + +@@ -429,6 +448,11 @@ static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex, + goto out_close; + } + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (current->mm->pax_flags & MF_PAX_SEGMEXEC) ++ pax_task_size = SEGMEXEC_TASK_SIZE; ++#endif ++ + eppnt = elf_phdata; + for (i = 0; i < interp_elf_ex->e_phnum; i++, eppnt++) { + if (eppnt->p_type == PT_LOAD) { +@@ -472,8 +496,8 @@ static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex, + k = load_addr + eppnt->p_vaddr; + if (BAD_ADDR(k) || + eppnt->p_filesz > eppnt->p_memsz || +- eppnt->p_memsz > TASK_SIZE || +- TASK_SIZE - eppnt->p_memsz < k) { ++ eppnt->p_memsz > pax_task_size || ++ pax_task_size - eppnt->p_memsz < k) { + error = -ENOMEM; + goto out_close; + } +@@ -525,6 +549,349 @@ out: + return error; + } + ++#ifdef CONFIG_PAX_PT_PAX_FLAGS ++#ifdef CONFIG_PAX_SOFTMODE ++static unsigned long pax_parse_pt_pax_softmode(const struct elf_phdr * const elf_phdata) ++{ ++ unsigned long pax_flags = 0UL; ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ if (elf_phdata->p_flags & PF_PAGEEXEC) ++ pax_flags |= MF_PAX_PAGEEXEC; ++#endif ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (elf_phdata->p_flags & PF_SEGMEXEC) ++ pax_flags |= MF_PAX_SEGMEXEC; ++#endif ++ ++#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_PAX_SEGMEXEC) ++ if ((pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) == (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) { ++ if ((__supported_pte_mask & _PAGE_NX)) ++ pax_flags &= ~MF_PAX_SEGMEXEC; ++ else ++ pax_flags &= ~MF_PAX_PAGEEXEC; ++ } ++#endif ++ ++#ifdef CONFIG_PAX_EMUTRAMP ++ if (elf_phdata->p_flags & PF_EMUTRAMP) ++ pax_flags |= MF_PAX_EMUTRAMP; ++#endif ++ ++#ifdef CONFIG_PAX_MPROTECT ++ if (elf_phdata->p_flags & PF_MPROTECT) ++ pax_flags |= MF_PAX_MPROTECT; ++#endif ++ ++#if defined(CONFIG_PAX_RANDMMAP) || defined(CONFIG_PAX_RANDUSTACK) ++ if (randomize_va_space && (elf_phdata->p_flags & PF_RANDMMAP)) ++ pax_flags |= MF_PAX_RANDMMAP; ++#endif ++ ++ return pax_flags; ++} ++#endif ++ ++static unsigned long pax_parse_pt_pax_hardmode(const struct elf_phdr * const elf_phdata) ++{ ++ unsigned long pax_flags = 0UL; ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ if (!(elf_phdata->p_flags & PF_NOPAGEEXEC)) ++ pax_flags |= MF_PAX_PAGEEXEC; ++#endif ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (!(elf_phdata->p_flags & PF_NOSEGMEXEC)) ++ pax_flags |= MF_PAX_SEGMEXEC; ++#endif ++ ++#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_PAX_SEGMEXEC) ++ if ((pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) == (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) { ++ if ((__supported_pte_mask & _PAGE_NX)) ++ pax_flags &= ~MF_PAX_SEGMEXEC; ++ else ++ pax_flags &= ~MF_PAX_PAGEEXEC; ++ } ++#endif ++ ++#ifdef CONFIG_PAX_EMUTRAMP ++ if (!(elf_phdata->p_flags & PF_NOEMUTRAMP)) ++ pax_flags |= MF_PAX_EMUTRAMP; ++#endif ++ ++#ifdef CONFIG_PAX_MPROTECT ++ if (!(elf_phdata->p_flags & PF_NOMPROTECT)) ++ pax_flags |= MF_PAX_MPROTECT; ++#endif ++ ++#if defined(CONFIG_PAX_RANDMMAP) || defined(CONFIG_PAX_RANDUSTACK) ++ if (randomize_va_space && !(elf_phdata->p_flags & PF_NORANDMMAP)) ++ pax_flags |= MF_PAX_RANDMMAP; ++#endif ++ ++ return pax_flags; ++} ++#endif ++ ++#ifdef CONFIG_PAX_XATTR_PAX_FLAGS ++#ifdef CONFIG_PAX_SOFTMODE ++static unsigned long pax_parse_xattr_pax_softmode(unsigned long pax_flags_softmode) ++{ ++ unsigned long pax_flags = 0UL; ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ if (pax_flags_softmode & MF_PAX_PAGEEXEC) ++ pax_flags |= MF_PAX_PAGEEXEC; ++#endif ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (pax_flags_softmode & MF_PAX_SEGMEXEC) ++ pax_flags |= MF_PAX_SEGMEXEC; ++#endif ++ ++#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_PAX_SEGMEXEC) ++ if ((pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) == (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) { ++ if ((__supported_pte_mask & _PAGE_NX)) ++ pax_flags &= ~MF_PAX_SEGMEXEC; ++ else ++ pax_flags &= ~MF_PAX_PAGEEXEC; ++ } ++#endif ++ ++#ifdef CONFIG_PAX_EMUTRAMP ++ if (pax_flags_softmode & MF_PAX_EMUTRAMP) ++ pax_flags |= MF_PAX_EMUTRAMP; ++#endif ++ ++#ifdef CONFIG_PAX_MPROTECT ++ if (pax_flags_softmode & MF_PAX_MPROTECT) ++ pax_flags |= MF_PAX_MPROTECT; ++#endif ++ ++#if defined(CONFIG_PAX_RANDMMAP) || defined(CONFIG_PAX_RANDUSTACK) ++ if (randomize_va_space && (pax_flags_softmode & MF_PAX_RANDMMAP)) ++ pax_flags |= MF_PAX_RANDMMAP; ++#endif ++ ++ return pax_flags; ++} ++#endif ++ ++static unsigned long pax_parse_xattr_pax_hardmode(unsigned long pax_flags_hardmode) ++{ ++ unsigned long pax_flags = 0UL; ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ if (!(pax_flags_hardmode & MF_PAX_PAGEEXEC)) ++ pax_flags |= MF_PAX_PAGEEXEC; ++#endif ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (!(pax_flags_hardmode & MF_PAX_SEGMEXEC)) ++ pax_flags |= MF_PAX_SEGMEXEC; ++#endif ++ ++#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_PAX_SEGMEXEC) ++ if ((pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) == (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) { ++ if ((__supported_pte_mask & _PAGE_NX)) ++ pax_flags &= ~MF_PAX_SEGMEXEC; ++ else ++ pax_flags &= ~MF_PAX_PAGEEXEC; ++ } ++#endif ++ ++#ifdef CONFIG_PAX_EMUTRAMP ++ if (!(pax_flags_hardmode & MF_PAX_EMUTRAMP)) ++ pax_flags |= MF_PAX_EMUTRAMP; ++#endif ++ ++#ifdef CONFIG_PAX_MPROTECT ++ if (!(pax_flags_hardmode & MF_PAX_MPROTECT)) ++ pax_flags |= MF_PAX_MPROTECT; ++#endif ++ ++#if defined(CONFIG_PAX_RANDMMAP) || defined(CONFIG_PAX_RANDUSTACK) ++ if (randomize_va_space && !(pax_flags_hardmode & MF_PAX_RANDMMAP)) ++ pax_flags |= MF_PAX_RANDMMAP; ++#endif ++ ++ return pax_flags; ++} ++#endif ++ ++#if defined(CONFIG_PAX_EI_PAX) || defined(CONFIG_PAX_PT_PAX_FLAGS) || defined(CONFIG_PAX_XATTR_PAX_FLAGS) ++static unsigned long pax_parse_ei_pax(const struct elfhdr * const elf_ex) ++{ ++ unsigned long pax_flags = 0UL; ++ ++#ifdef CONFIG_PAX_EI_PAX ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ if (!(elf_ex->e_ident[EI_PAX] & EF_PAX_PAGEEXEC)) ++ pax_flags |= MF_PAX_PAGEEXEC; ++#endif ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (!(elf_ex->e_ident[EI_PAX] & EF_PAX_SEGMEXEC)) ++ pax_flags |= MF_PAX_SEGMEXEC; ++#endif ++ ++#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_PAX_SEGMEXEC) ++ if ((pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) == (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) { ++ if ((__supported_pte_mask & _PAGE_NX)) ++ pax_flags &= ~MF_PAX_SEGMEXEC; ++ else ++ pax_flags &= ~MF_PAX_PAGEEXEC; ++ } ++#endif ++ ++#ifdef CONFIG_PAX_EMUTRAMP ++ if ((pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) && (elf_ex->e_ident[EI_PAX] & EF_PAX_EMUTRAMP)) ++ pax_flags |= MF_PAX_EMUTRAMP; ++#endif ++ ++#ifdef CONFIG_PAX_MPROTECT ++ if ((pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) && !(elf_ex->e_ident[EI_PAX] & EF_PAX_MPROTECT)) ++ pax_flags |= MF_PAX_MPROTECT; ++#endif ++ ++#ifdef CONFIG_PAX_ASLR ++ if (randomize_va_space && !(elf_ex->e_ident[EI_PAX] & EF_PAX_RANDMMAP)) ++ pax_flags |= MF_PAX_RANDMMAP; ++#endif ++ ++#else ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ pax_flags |= MF_PAX_PAGEEXEC; ++#endif ++ ++#ifdef CONFIG_PAX_MPROTECT ++ pax_flags |= MF_PAX_MPROTECT; ++#endif ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ pax_flags |= MF_PAX_RANDMMAP; ++#endif ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (!(pax_flags & MF_PAX_PAGEEXEC) || !(__supported_pte_mask & _PAGE_NX)) { ++ pax_flags &= ~MF_PAX_PAGEEXEC; ++ pax_flags |= MF_PAX_SEGMEXEC; ++ } ++#endif ++ ++#endif ++ ++ return pax_flags; ++} ++ ++static unsigned long pax_parse_pt_pax(const struct elfhdr * const elf_ex, const struct elf_phdr * const elf_phdata) ++{ ++ ++#ifdef CONFIG_PAX_PT_PAX_FLAGS ++ unsigned long i; ++ ++ for (i = 0UL; i < elf_ex->e_phnum; i++) ++ if (elf_phdata[i].p_type == PT_PAX_FLAGS) { ++ if (((elf_phdata[i].p_flags & PF_PAGEEXEC) && (elf_phdata[i].p_flags & PF_NOPAGEEXEC)) || ++ ((elf_phdata[i].p_flags & PF_SEGMEXEC) && (elf_phdata[i].p_flags & PF_NOSEGMEXEC)) || ++ ((elf_phdata[i].p_flags & PF_EMUTRAMP) && (elf_phdata[i].p_flags & PF_NOEMUTRAMP)) || ++ ((elf_phdata[i].p_flags & PF_MPROTECT) && (elf_phdata[i].p_flags & PF_NOMPROTECT)) || ++ ((elf_phdata[i].p_flags & PF_RANDMMAP) && (elf_phdata[i].p_flags & PF_NORANDMMAP))) ++ return ~0UL; ++ ++#ifdef CONFIG_PAX_SOFTMODE ++ if (pax_softmode) ++ return pax_parse_pt_pax_softmode(&elf_phdata[i]); ++ else ++#endif ++ ++ return pax_parse_pt_pax_hardmode(&elf_phdata[i]); ++ break; ++ } ++#endif ++ ++ return ~0UL; ++} ++ ++static unsigned long pax_parse_xattr_pax(struct file * const file) ++{ ++ ++#ifdef CONFIG_PAX_XATTR_PAX_FLAGS ++ ssize_t xattr_size, i; ++ unsigned char xattr_value[5]; ++ unsigned long pax_flags_hardmode = 0UL, pax_flags_softmode = 0UL; ++ ++ xattr_size = vfs_getxattr(file->f_path.dentry, XATTR_NAME_PAX_FLAGS, xattr_value, sizeof xattr_value); ++ if (xattr_size <= 0) ++ return ~0UL; ++ ++ for (i = 0; i < xattr_size; i++) ++ switch (xattr_value[i]) { ++ default: ++ return ~0UL; ++ ++#define parse_flag(option1, option2, flag) \ ++ case option1: \ ++ pax_flags_hardmode |= MF_PAX_##flag; \ ++ break; \ ++ case option2: \ ++ pax_flags_softmode |= MF_PAX_##flag; \ ++ break; ++ ++ parse_flag('p', 'P', PAGEEXEC); ++ parse_flag('e', 'E', EMUTRAMP); ++ parse_flag('m', 'M', MPROTECT); ++ parse_flag('r', 'R', RANDMMAP); ++ parse_flag('s', 'S', SEGMEXEC); ++ ++#undef parse_flag ++ } ++ ++ if (pax_flags_hardmode & pax_flags_softmode) ++ return ~0UL; ++ ++#ifdef CONFIG_PAX_SOFTMODE ++ if (pax_softmode) ++ return pax_parse_xattr_pax_softmode(pax_flags_softmode); ++ else ++#endif ++ ++ return pax_parse_xattr_pax_hardmode(pax_flags_hardmode); ++#else ++ return ~0UL; ++#endif ++ ++} ++ ++static long pax_parse_pax_flags(const struct elfhdr * const elf_ex, const struct elf_phdr * const elf_phdata, struct file * const file) ++{ ++ unsigned long pax_flags, pt_pax_flags, xattr_pax_flags; ++ ++ pax_flags = pax_parse_ei_pax(elf_ex); ++ pt_pax_flags = pax_parse_pt_pax(elf_ex, elf_phdata); ++ xattr_pax_flags = pax_parse_xattr_pax(file); ++ ++ if (pt_pax_flags == ~0UL) ++ pt_pax_flags = xattr_pax_flags; ++ else if (xattr_pax_flags == ~0UL) ++ xattr_pax_flags = pt_pax_flags; ++ if (pt_pax_flags != xattr_pax_flags) ++ return -EINVAL; ++ if (pt_pax_flags != ~0UL) ++ pax_flags = pt_pax_flags; ++ ++ if (0 > pax_check_flags(&pax_flags)) ++ return -EINVAL; ++ ++ current->mm->pax_flags = pax_flags; ++ return 0; ++} ++#endif ++ + /* + * These are the functions used to load ELF style executables and shared + * libraries. There is no binary dependent code anywhere else. +@@ -541,6 +908,11 @@ static unsigned long randomize_stack_top(unsigned long stack_top) + { + unsigned int random_variable = 0; + ++#ifdef CONFIG_PAX_RANDUSTACK ++ if (randomize_va_space) ++ return stack_top - current->mm->delta_stack; ++#endif ++ + if ((current->flags & PF_RANDOMIZE) && + !(current->personality & ADDR_NO_RANDOMIZE)) { + random_variable = get_random_int() & STACK_RND_MASK; +@@ -559,7 +931,7 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs) + unsigned long load_addr = 0, load_bias = 0; + int load_addr_set = 0; + char * elf_interpreter = NULL; +- unsigned long error; ++ unsigned long error = 0; + struct elf_phdr *elf_ppnt, *elf_phdata; + unsigned long elf_bss, elf_brk; + int retval, i; +@@ -569,11 +941,11 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs) + unsigned long start_code, end_code, start_data, end_data; + unsigned long reloc_func_desc __maybe_unused = 0; + int executable_stack = EXSTACK_DEFAULT; +- unsigned long def_flags = 0; + struct { + struct elfhdr elf_ex; + struct elfhdr interp_elf_ex; + } *loc; ++ unsigned long pax_task_size = TASK_SIZE; + + loc = kmalloc(sizeof(*loc), GFP_KERNEL); + if (!loc) { +@@ -709,11 +1081,81 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs) + goto out_free_dentry; + + /* OK, This is the point of no return */ +- current->mm->def_flags = def_flags; ++ ++#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR) ++ current->mm->pax_flags = 0UL; ++#endif ++ ++#ifdef CONFIG_PAX_DLRESOLVE ++ current->mm->call_dl_resolve = 0UL; ++#endif ++ ++#if defined(CONFIG_PPC32) && defined(CONFIG_PAX_EMUSIGRT) ++ current->mm->call_syscall = 0UL; ++#endif ++ ++#ifdef CONFIG_PAX_ASLR ++ current->mm->delta_mmap = 0UL; ++ current->mm->delta_stack = 0UL; ++#endif ++ ++ current->mm->def_flags = 0; ++ ++#if defined(CONFIG_PAX_EI_PAX) || defined(CONFIG_PAX_PT_PAX_FLAGS) || defined(CONFIG_PAX_XATTR_PAX_FLAGS) ++ if (0 > pax_parse_pax_flags(&loc->elf_ex, elf_phdata, bprm->file)) { ++ send_sig(SIGKILL, current, 0); ++ goto out_free_dentry; ++ } ++#endif ++ ++#ifdef CONFIG_PAX_HAVE_ACL_FLAGS ++ pax_set_initial_flags(bprm); ++#elif defined(CONFIG_PAX_HOOK_ACL_FLAGS) ++ if (pax_set_initial_flags_func) ++ (pax_set_initial_flags_func)(bprm); ++#endif ++ ++#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT ++ if ((current->mm->pax_flags & MF_PAX_PAGEEXEC) && !(__supported_pte_mask & _PAGE_NX)) { ++ current->mm->context.user_cs_limit = PAGE_SIZE; ++ current->mm->def_flags |= VM_PAGEEXEC; ++ } ++#endif ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (current->mm->pax_flags & MF_PAX_SEGMEXEC) { ++ current->mm->context.user_cs_base = SEGMEXEC_TASK_SIZE; ++ current->mm->context.user_cs_limit = TASK_SIZE-SEGMEXEC_TASK_SIZE; ++ pax_task_size = SEGMEXEC_TASK_SIZE; ++ current->mm->def_flags |= VM_NOHUGEPAGE; ++ } ++#endif ++ ++#if defined(CONFIG_ARCH_TRACK_EXEC_LIMIT) || defined(CONFIG_PAX_SEGMEXEC) ++ if (current->mm->pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) { ++ set_user_cs(current->mm->context.user_cs_base, current->mm->context.user_cs_limit, get_cpu()); ++ put_cpu(); ++ } ++#endif + + /* Do this immediately, since STACK_TOP as used in setup_arg_pages + may depend on the personality. */ + SET_PERSONALITY(loc->elf_ex); ++ ++#ifdef CONFIG_PAX_ASLR ++ if (current->mm->pax_flags & MF_PAX_RANDMMAP) { ++ current->mm->delta_mmap = (pax_get_random_long() & ((1UL << PAX_DELTA_MMAP_LEN)-1)) << PAGE_SHIFT; ++ current->mm->delta_stack = (pax_get_random_long() & ((1UL << PAX_DELTA_STACK_LEN)-1)) << PAGE_SHIFT; ++ } ++#endif ++ ++#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) ++ if (current->mm->pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) { ++ executable_stack = EXSTACK_DISABLE_X; ++ current->personality &= ~READ_IMPLIES_EXEC; ++ } else ++#endif ++ + if (elf_read_implies_exec(loc->elf_ex, executable_stack)) + current->personality |= READ_IMPLIES_EXEC; + +@@ -804,6 +1246,20 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs) + #else + load_bias = ELF_PAGESTART(ELF_ET_DYN_BASE - vaddr); + #endif ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ /* PaX: randomize base address at the default exe base if requested */ ++ if ((current->mm->pax_flags & MF_PAX_RANDMMAP) && elf_interpreter) { ++#ifdef CONFIG_SPARC64 ++ load_bias = (pax_get_random_long() & ((1UL << PAX_DELTA_MMAP_LEN) - 1)) << (PAGE_SHIFT+1); ++#else ++ load_bias = (pax_get_random_long() & ((1UL << PAX_DELTA_MMAP_LEN) - 1)) << PAGE_SHIFT; ++#endif ++ load_bias = ELF_PAGESTART(PAX_ELF_ET_DYN_BASE - vaddr + load_bias); ++ elf_flags |= MAP_FIXED; ++ } ++#endif ++ + } + + error = elf_map(bprm->file, load_bias + vaddr, elf_ppnt, +@@ -836,9 +1292,9 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs) + * allowed task size. Note that p_filesz must always be + * <= p_memsz so it is only necessary to check p_memsz. + */ +- if (BAD_ADDR(k) || elf_ppnt->p_filesz > elf_ppnt->p_memsz || +- elf_ppnt->p_memsz > TASK_SIZE || +- TASK_SIZE - elf_ppnt->p_memsz < k) { ++ if (k >= pax_task_size || elf_ppnt->p_filesz > elf_ppnt->p_memsz || ++ elf_ppnt->p_memsz > pax_task_size || ++ pax_task_size - elf_ppnt->p_memsz < k) { + /* set_brk can never work. Avoid overflows. */ + send_sig(SIGKILL, current, 0); + retval = -EINVAL; +@@ -877,11 +1333,40 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs) + goto out_free_dentry; + } + if (likely(elf_bss != elf_brk) && unlikely(padzero(elf_bss))) { +- send_sig(SIGSEGV, current, 0); +- retval = -EFAULT; /* Nobody gets to see this, but.. */ +- goto out_free_dentry; ++ /* ++ * This bss-zeroing can fail if the ELF ++ * file specifies odd protections. So ++ * we don't check the return value ++ */ + } + ++#ifdef CONFIG_PAX_RANDMMAP ++ if (current->mm->pax_flags & MF_PAX_RANDMMAP) { ++ unsigned long start, size; ++ ++ start = ELF_PAGEALIGN(elf_brk); ++ size = PAGE_SIZE + ((pax_get_random_long() & ((1UL << 22) - 1UL)) << 4); ++ down_write(¤t->mm->mmap_sem); ++ retval = -ENOMEM; ++ if (!find_vma_intersection(current->mm, start, start + size + PAGE_SIZE)) { ++ unsigned long prot = PROT_NONE; ++ ++ current->mm->brk_gap = PAGE_ALIGN(size) >> PAGE_SHIFT; ++// if (current->personality & ADDR_NO_RANDOMIZE) ++// prot = PROT_READ; ++ start = do_mmap(NULL, start, size, prot, MAP_ANONYMOUS | MAP_FIXED | MAP_PRIVATE, 0); ++ retval = IS_ERR_VALUE(start) ? start : 0; ++ } ++ up_write(¤t->mm->mmap_sem); ++ if (retval == 0) ++ retval = set_brk(start + size, start + size + PAGE_SIZE); ++ if (retval < 0) { ++ send_sig(SIGKILL, current, 0); ++ goto out_free_dentry; ++ } ++ } ++#endif ++ + if (elf_interpreter) { + unsigned long uninitialized_var(interp_map_addr); + +@@ -1109,7 +1594,7 @@ static bool always_dump_vma(struct vm_area_struct *vma) + * Decide what to dump of a segment, part, all or none. + */ + static unsigned long vma_dump_size(struct vm_area_struct *vma, +- unsigned long mm_flags) ++ unsigned long mm_flags, long signr) + { + #define FILTER(type) (mm_flags & (1UL << MMF_DUMP_##type)) + +@@ -1146,7 +1631,7 @@ static unsigned long vma_dump_size(struct vm_area_struct *vma, + if (vma->vm_file == NULL) + return 0; + +- if (FILTER(MAPPED_PRIVATE)) ++ if (signr == SIGKILL || FILTER(MAPPED_PRIVATE)) + goto whole; + + /* +@@ -1368,9 +1853,9 @@ static void fill_auxv_note(struct memelfnote *note, struct mm_struct *mm) + { + elf_addr_t *auxv = (elf_addr_t *) mm->saved_auxv; + int i = 0; +- do ++ do { + i += 2; +- while (auxv[i - 2] != AT_NULL); ++ } while (auxv[i - 2] != AT_NULL); + fill_note(note, "CORE", NT_AUXV, i * sizeof(elf_addr_t), auxv); + } + +@@ -1892,14 +2377,14 @@ static void fill_extnum_info(struct elfhdr *elf, struct elf_shdr *shdr4extnum, + } + + static size_t elf_core_vma_data_size(struct vm_area_struct *gate_vma, +- unsigned long mm_flags) ++ struct coredump_params *cprm) + { + struct vm_area_struct *vma; + size_t size = 0; + + for (vma = first_vma(current, gate_vma); vma != NULL; + vma = next_vma(vma, gate_vma)) +- size += vma_dump_size(vma, mm_flags); ++ size += vma_dump_size(vma, cprm->mm_flags, cprm->signr); + return size; + } + +@@ -1993,7 +2478,7 @@ static int elf_core_dump(struct coredump_params *cprm) + + dataoff = offset = roundup(offset, ELF_EXEC_PAGESIZE); + +- offset += elf_core_vma_data_size(gate_vma, cprm->mm_flags); ++ offset += elf_core_vma_data_size(gate_vma, cprm); + offset += elf_core_extra_data_size(); + e_shoff = offset; + +@@ -2007,10 +2492,12 @@ static int elf_core_dump(struct coredump_params *cprm) + offset = dataoff; + + size += sizeof(*elf); ++ gr_learn_resource(current, RLIMIT_CORE, size, 1); + if (size > cprm->limit || !dump_write(cprm->file, elf, sizeof(*elf))) + goto end_coredump; + + size += sizeof(*phdr4note); ++ gr_learn_resource(current, RLIMIT_CORE, size, 1); + if (size > cprm->limit + || !dump_write(cprm->file, phdr4note, sizeof(*phdr4note))) + goto end_coredump; +@@ -2024,7 +2511,7 @@ static int elf_core_dump(struct coredump_params *cprm) + phdr.p_offset = offset; + phdr.p_vaddr = vma->vm_start; + phdr.p_paddr = 0; +- phdr.p_filesz = vma_dump_size(vma, cprm->mm_flags); ++ phdr.p_filesz = vma_dump_size(vma, cprm->mm_flags, cprm->signr); + phdr.p_memsz = vma->vm_end - vma->vm_start; + offset += phdr.p_filesz; + phdr.p_flags = vma->vm_flags & VM_READ ? PF_R : 0; +@@ -2035,6 +2522,7 @@ static int elf_core_dump(struct coredump_params *cprm) + phdr.p_align = ELF_EXEC_PAGESIZE; + + size += sizeof(phdr); ++ gr_learn_resource(current, RLIMIT_CORE, size, 1); + if (size > cprm->limit + || !dump_write(cprm->file, &phdr, sizeof(phdr))) + goto end_coredump; +@@ -2059,7 +2547,7 @@ static int elf_core_dump(struct coredump_params *cprm) + unsigned long addr; + unsigned long end; + +- end = vma->vm_start + vma_dump_size(vma, cprm->mm_flags); ++ end = vma->vm_start + vma_dump_size(vma, cprm->mm_flags, cprm->signr); + + for (addr = vma->vm_start; addr < end; addr += PAGE_SIZE) { + struct page *page; +@@ -2068,6 +2556,7 @@ static int elf_core_dump(struct coredump_params *cprm) + page = get_dump_page(addr); + if (page) { + void *kaddr = kmap(page); ++ gr_learn_resource(current, RLIMIT_CORE, size + PAGE_SIZE, 1); + stop = ((size += PAGE_SIZE) > cprm->limit) || + !dump_write(cprm->file, kaddr, + PAGE_SIZE); +@@ -2085,6 +2574,7 @@ static int elf_core_dump(struct coredump_params *cprm) + + if (e_phnum == PN_XNUM) { + size += sizeof(*shdr4extnum); ++ gr_learn_resource(current, RLIMIT_CORE, size, 1); + if (size > cprm->limit + || !dump_write(cprm->file, shdr4extnum, + sizeof(*shdr4extnum))) +@@ -2105,6 +2595,97 @@ out: + + #endif /* CONFIG_ELF_CORE */ + ++#ifdef CONFIG_PAX_MPROTECT ++/* PaX: non-PIC ELF libraries need relocations on their executable segments ++ * therefore we'll grant them VM_MAYWRITE once during their life. Similarly ++ * we'll remove VM_MAYWRITE for good on RELRO segments. ++ * ++ * The checks favour ld-linux.so behaviour which operates on a per ELF segment ++ * basis because we want to allow the common case and not the special ones. ++ */ ++static void elf_handle_mprotect(struct vm_area_struct *vma, unsigned long newflags) ++{ ++ struct elfhdr elf_h; ++ struct elf_phdr elf_p; ++ unsigned long i; ++ unsigned long oldflags; ++ bool is_textrel_rw, is_textrel_rx, is_relro; ++ ++ if (!(vma->vm_mm->pax_flags & MF_PAX_MPROTECT)) ++ return; ++ ++ oldflags = vma->vm_flags & (VM_MAYEXEC | VM_MAYWRITE | VM_MAYREAD | VM_EXEC | VM_WRITE | VM_READ); ++ newflags &= VM_MAYEXEC | VM_MAYWRITE | VM_MAYREAD | VM_EXEC | VM_WRITE | VM_READ; ++ ++#ifdef CONFIG_PAX_ELFRELOCS ++ /* possible TEXTREL */ ++ is_textrel_rw = vma->vm_file && !vma->anon_vma && oldflags == (VM_MAYEXEC | VM_MAYREAD | VM_EXEC | VM_READ) && newflags == (VM_WRITE | VM_READ); ++ is_textrel_rx = vma->vm_file && vma->anon_vma && oldflags == (VM_MAYEXEC | VM_MAYWRITE | VM_MAYREAD | VM_WRITE | VM_READ) && newflags == (VM_EXEC | VM_READ); ++#else ++ is_textrel_rw = false; ++ is_textrel_rx = false; ++#endif ++ ++ /* possible RELRO */ ++ is_relro = vma->vm_file && vma->anon_vma && oldflags == (VM_MAYWRITE | VM_MAYREAD | VM_READ) && newflags == (VM_MAYWRITE | VM_MAYREAD | VM_READ); ++ ++ if (!is_textrel_rw && !is_textrel_rx && !is_relro) ++ return; ++ ++ if (sizeof(elf_h) != kernel_read(vma->vm_file, 0UL, (char *)&elf_h, sizeof(elf_h)) || ++ memcmp(elf_h.e_ident, ELFMAG, SELFMAG) || ++ ++#ifdef CONFIG_PAX_ETEXECRELOCS ++ ((is_textrel_rw || is_textrel_rx) && (elf_h.e_type != ET_DYN && elf_h.e_type != ET_EXEC)) || ++#else ++ ((is_textrel_rw || is_textrel_rx) && elf_h.e_type != ET_DYN) || ++#endif ++ ++ (is_relro && (elf_h.e_type != ET_DYN && elf_h.e_type != ET_EXEC)) || ++ !elf_check_arch(&elf_h) || ++ elf_h.e_phentsize != sizeof(struct elf_phdr) || ++ elf_h.e_phnum > 65536UL / sizeof(struct elf_phdr)) ++ return; ++ ++ for (i = 0UL; i < elf_h.e_phnum; i++) { ++ if (sizeof(elf_p) != kernel_read(vma->vm_file, elf_h.e_phoff + i*sizeof(elf_p), (char *)&elf_p, sizeof(elf_p))) ++ return; ++ switch (elf_p.p_type) { ++ case PT_DYNAMIC: ++ if (!is_textrel_rw && !is_textrel_rx) ++ continue; ++ i = 0UL; ++ while ((i+1) * sizeof(elf_dyn) <= elf_p.p_filesz) { ++ elf_dyn dyn; ++ ++ if (sizeof(dyn) != kernel_read(vma->vm_file, elf_p.p_offset + i*sizeof(dyn), (char *)&dyn, sizeof(dyn))) ++ return; ++ if (dyn.d_tag == DT_NULL) ++ return; ++ if (dyn.d_tag == DT_TEXTREL || (dyn.d_tag == DT_FLAGS && (dyn.d_un.d_val & DF_TEXTREL))) { ++ gr_log_textrel(vma); ++ if (is_textrel_rw) ++ vma->vm_flags |= VM_MAYWRITE; ++ else ++ /* PaX: disallow write access after relocs are done, hopefully noone else needs it... */ ++ vma->vm_flags &= ~VM_MAYWRITE; ++ return; ++ } ++ i++; ++ } ++ return; ++ ++ case PT_GNU_RELRO: ++ if (!is_relro) ++ continue; ++ if ((elf_p.p_offset >> PAGE_SHIFT) == vma->vm_pgoff && ELF_PAGEALIGN(elf_p.p_memsz) == vma->vm_end - vma->vm_start) ++ vma->vm_flags &= ~VM_MAYWRITE; ++ return; ++ } ++ } ++} ++#endif ++ + static int __init init_elf_binfmt(void) + { + register_binfmt(&elf_format); +diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c +index 6b2daf9..a70dccb 100644 +--- a/fs/binfmt_flat.c ++++ b/fs/binfmt_flat.c +@@ -562,7 +562,9 @@ static int load_flat_file(struct linux_binprm * bprm, + realdatastart = (unsigned long) -ENOMEM; + printk("Unable to allocate RAM for process data, errno %d\n", + (int)-realdatastart); ++ down_write(¤t->mm->mmap_sem); + do_munmap(current->mm, textpos, text_len); ++ up_write(¤t->mm->mmap_sem); + ret = realdatastart; + goto err; + } +@@ -586,8 +588,10 @@ static int load_flat_file(struct linux_binprm * bprm, + } + if (IS_ERR_VALUE(result)) { + printk("Unable to read data+bss, errno %d\n", (int)-result); ++ down_write(¤t->mm->mmap_sem); + do_munmap(current->mm, textpos, text_len); + do_munmap(current->mm, realdatastart, len); ++ up_write(¤t->mm->mmap_sem); + ret = result; + goto err; + } +@@ -654,8 +658,10 @@ static int load_flat_file(struct linux_binprm * bprm, + } + if (IS_ERR_VALUE(result)) { + printk("Unable to read code+data+bss, errno %d\n",(int)-result); ++ down_write(¤t->mm->mmap_sem); + do_munmap(current->mm, textpos, text_len + data_len + extra + + MAX_SHARED_LIBS * sizeof(unsigned long)); ++ up_write(¤t->mm->mmap_sem); + ret = result; + goto err; + } +diff --git a/fs/bio.c b/fs/bio.c +index 84da885..2149cd9 100644 +--- a/fs/bio.c ++++ b/fs/bio.c +@@ -838,7 +838,7 @@ struct bio *bio_copy_user_iov(struct request_queue *q, + /* + * Overflow, abort + */ +- if (end < start) ++ if (end < start || end - start > INT_MAX - nr_pages) + return ERR_PTR(-EINVAL); + + nr_pages += end - start; +@@ -1234,7 +1234,7 @@ static void bio_copy_kern_endio(struct bio *bio, int err) + const int read = bio_data_dir(bio) == READ; + struct bio_map_data *bmd = bio->bi_private; + int i; +- char *p = bmd->sgvecs[0].iov_base; ++ char *p = (char __force_kernel *)bmd->sgvecs[0].iov_base; + + __bio_for_each_segment(bvec, bio, i, 0) { + char *addr = page_address(bvec->bv_page); +diff --git a/fs/block_dev.c b/fs/block_dev.c +index ba11c30..623d736 100644 +--- a/fs/block_dev.c ++++ b/fs/block_dev.c +@@ -704,7 +704,7 @@ static bool bd_may_claim(struct block_device *bdev, struct block_device *whole, + else if (bdev->bd_contains == bdev) + return true; /* is a whole device which isn't held */ + +- else if (whole->bd_holder == bd_may_claim) ++ else if (whole->bd_holder == (void *)bd_may_claim) + return true; /* is a partition of a device that is being partitioned */ + else if (whole->bd_holder != NULL) + return false; /* is a partition of a held device */ +diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c +index c053e90..e5f1afc 100644 +--- a/fs/btrfs/check-integrity.c ++++ b/fs/btrfs/check-integrity.c +@@ -156,7 +156,7 @@ struct btrfsic_block { + union { + bio_end_io_t *bio; + bh_end_io_t *bh; +- } orig_bio_bh_end_io; ++ } __no_const orig_bio_bh_end_io; + int submit_bio_bh_rw; + u64 flush_gen; /* only valid if !never_written */ + }; +diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c +index 4106264..8157ede 100644 +--- a/fs/btrfs/ctree.c ++++ b/fs/btrfs/ctree.c +@@ -513,9 +513,12 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans, + free_extent_buffer(buf); + add_root_to_dirty_list(root); + } else { +- if (root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID) +- parent_start = parent->start; +- else ++ if (root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID) { ++ if (parent) ++ parent_start = parent->start; ++ else ++ parent_start = 0; ++ } else + parent_start = 0; + + WARN_ON(trans->transid != btrfs_header_generation(parent)); +diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c +index 0df0d1f..4bdcbfe 100644 +--- a/fs/btrfs/inode.c ++++ b/fs/btrfs/inode.c +@@ -7074,7 +7074,7 @@ fail: + return -ENOMEM; + } + +-static int btrfs_getattr(struct vfsmount *mnt, ++int btrfs_getattr(struct vfsmount *mnt, + struct dentry *dentry, struct kstat *stat) + { + struct inode *inode = dentry->d_inode; +@@ -7088,6 +7088,14 @@ static int btrfs_getattr(struct vfsmount *mnt, + return 0; + } + ++EXPORT_SYMBOL(btrfs_getattr); ++ ++dev_t get_btrfs_dev_from_inode(struct inode *inode) ++{ ++ return BTRFS_I(inode)->root->anon_dev; ++} ++EXPORT_SYMBOL(get_btrfs_dev_from_inode); ++ + /* + * If a file is moved, it will inherit the cow and compression flags of the new + * directory. +diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c +index 14f8e1f..ab8d81f 100644 +--- a/fs/btrfs/ioctl.c ++++ b/fs/btrfs/ioctl.c +@@ -2882,9 +2882,12 @@ long btrfs_ioctl_space_info(struct btrfs_root *root, void __user *arg) + for (i = 0; i < num_types; i++) { + struct btrfs_space_info *tmp; + ++ /* Don't copy in more than we allocated */ + if (!slot_count) + break; + ++ slot_count--; ++ + info = NULL; + rcu_read_lock(); + list_for_each_entry_rcu(tmp, &root->fs_info->space_info, +@@ -2906,15 +2909,12 @@ long btrfs_ioctl_space_info(struct btrfs_root *root, void __user *arg) + memcpy(dest, &space, sizeof(space)); + dest++; + space_args.total_spaces++; +- slot_count--; + } +- if (!slot_count) +- break; + } + up_read(&info->groups_sem); + } + +- user_dest = (struct btrfs_ioctl_space_info *) ++ user_dest = (struct btrfs_ioctl_space_info __user *) + (arg + sizeof(struct btrfs_ioctl_space_args)); + + if (copy_to_user(user_dest, dest_orig, alloc_size)) +diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c +index 646ee21..f020f87 100644 +--- a/fs/btrfs/relocation.c ++++ b/fs/btrfs/relocation.c +@@ -1268,7 +1268,7 @@ static int __update_reloc_root(struct btrfs_root *root, int del) + } + spin_unlock(&rc->reloc_root_tree.lock); + +- BUG_ON((struct btrfs_root *)node->data != root); ++ BUG_ON(!node || (struct btrfs_root *)node->data != root); + + if (!del) { + spin_lock(&rc->reloc_root_tree.lock); +diff --git a/fs/buffer.c b/fs/buffer.c +index ad5938c..0bc1bed 100644 +--- a/fs/buffer.c ++++ b/fs/buffer.c +@@ -1036,6 +1036,9 @@ grow_buffers(struct block_device *bdev, sector_t block, int size) + static struct buffer_head * + __getblk_slow(struct block_device *bdev, sector_t block, int size) + { ++ int ret; ++ struct buffer_head *bh; ++ + /* Size must be multiple of hard sectorsize */ + if (unlikely(size & (bdev_logical_block_size(bdev)-1) || + (size < 512 || size > PAGE_SIZE))) { +@@ -1048,20 +1051,21 @@ __getblk_slow(struct block_device *bdev, sector_t block, int size) + return NULL; + } + +- for (;;) { +- struct buffer_head * bh; +- int ret; ++retry: ++ bh = __find_get_block(bdev, block, size); ++ if (bh) ++ return bh; + ++ ret = grow_buffers(bdev, block, size); ++ if (ret == 0) { ++ free_more_memory(); ++ goto retry; ++ } else if (ret > 0) { + bh = __find_get_block(bdev, block, size); + if (bh) + return bh; +- +- ret = grow_buffers(bdev, block, size); +- if (ret < 0) +- return NULL; +- if (ret == 0) +- free_more_memory(); + } ++ return NULL; + } + + /* +diff --git a/fs/cachefiles/bind.c b/fs/cachefiles/bind.c +index 622f469..e8d2d55 100644 +--- a/fs/cachefiles/bind.c ++++ b/fs/cachefiles/bind.c +@@ -39,13 +39,11 @@ int cachefiles_daemon_bind(struct cachefiles_cache *cache, char *args) + args); + + /* start by checking things over */ +- ASSERT(cache->fstop_percent >= 0 && +- cache->fstop_percent < cache->fcull_percent && ++ ASSERT(cache->fstop_percent < cache->fcull_percent && + cache->fcull_percent < cache->frun_percent && + cache->frun_percent < 100); + +- ASSERT(cache->bstop_percent >= 0 && +- cache->bstop_percent < cache->bcull_percent && ++ ASSERT(cache->bstop_percent < cache->bcull_percent && + cache->bcull_percent < cache->brun_percent && + cache->brun_percent < 100); + +diff --git a/fs/cachefiles/daemon.c b/fs/cachefiles/daemon.c +index 0a1467b..6a53245 100644 +--- a/fs/cachefiles/daemon.c ++++ b/fs/cachefiles/daemon.c +@@ -196,7 +196,7 @@ static ssize_t cachefiles_daemon_read(struct file *file, char __user *_buffer, + if (n > buflen) + return -EMSGSIZE; + +- if (copy_to_user(_buffer, buffer, n) != 0) ++ if (n > sizeof(buffer) || copy_to_user(_buffer, buffer, n) != 0) + return -EFAULT; + + return n; +@@ -222,7 +222,7 @@ static ssize_t cachefiles_daemon_write(struct file *file, + if (test_bit(CACHEFILES_DEAD, &cache->flags)) + return -EIO; + +- if (datalen < 0 || datalen > PAGE_SIZE - 1) ++ if (datalen > PAGE_SIZE - 1) + return -EOPNOTSUPP; + + /* drag the command string into the kernel so we can parse it */ +@@ -386,7 +386,7 @@ static int cachefiles_daemon_fstop(struct cachefiles_cache *cache, char *args) + if (args[0] != '%' || args[1] != '\0') + return -EINVAL; + +- if (fstop < 0 || fstop >= cache->fcull_percent) ++ if (fstop >= cache->fcull_percent) + return cachefiles_daemon_range_error(cache, args); + + cache->fstop_percent = fstop; +@@ -458,7 +458,7 @@ static int cachefiles_daemon_bstop(struct cachefiles_cache *cache, char *args) + if (args[0] != '%' || args[1] != '\0') + return -EINVAL; + +- if (bstop < 0 || bstop >= cache->bcull_percent) ++ if (bstop >= cache->bcull_percent) + return cachefiles_daemon_range_error(cache, args); + + cache->bstop_percent = bstop; +diff --git a/fs/cachefiles/internal.h b/fs/cachefiles/internal.h +index bd6bc1b..b627b53 100644 +--- a/fs/cachefiles/internal.h ++++ b/fs/cachefiles/internal.h +@@ -57,7 +57,7 @@ struct cachefiles_cache { + wait_queue_head_t daemon_pollwq; /* poll waitqueue for daemon */ + struct rb_root active_nodes; /* active nodes (can't be culled) */ + rwlock_t active_lock; /* lock for active_nodes */ +- atomic_t gravecounter; /* graveyard uniquifier */ ++ atomic_unchecked_t gravecounter; /* graveyard uniquifier */ + unsigned frun_percent; /* when to stop culling (% files) */ + unsigned fcull_percent; /* when to start culling (% files) */ + unsigned fstop_percent; /* when to stop allocating (% files) */ +@@ -169,19 +169,19 @@ extern int cachefiles_check_in_use(struct cachefiles_cache *cache, + * proc.c + */ + #ifdef CONFIG_CACHEFILES_HISTOGRAM +-extern atomic_t cachefiles_lookup_histogram[HZ]; +-extern atomic_t cachefiles_mkdir_histogram[HZ]; +-extern atomic_t cachefiles_create_histogram[HZ]; ++extern atomic_unchecked_t cachefiles_lookup_histogram[HZ]; ++extern atomic_unchecked_t cachefiles_mkdir_histogram[HZ]; ++extern atomic_unchecked_t cachefiles_create_histogram[HZ]; + + extern int __init cachefiles_proc_init(void); + extern void cachefiles_proc_cleanup(void); + static inline +-void cachefiles_hist(atomic_t histogram[], unsigned long start_jif) ++void cachefiles_hist(atomic_unchecked_t histogram[], unsigned long start_jif) + { + unsigned long jif = jiffies - start_jif; + if (jif >= HZ) + jif = HZ - 1; +- atomic_inc(&histogram[jif]); ++ atomic_inc_unchecked(&histogram[jif]); + } + + #else +diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c +index 7f0771d..87d4f36 100644 +--- a/fs/cachefiles/namei.c ++++ b/fs/cachefiles/namei.c +@@ -318,7 +318,7 @@ try_again: + /* first step is to make up a grave dentry in the graveyard */ + sprintf(nbuffer, "%08x%08x", + (uint32_t) get_seconds(), +- (uint32_t) atomic_inc_return(&cache->gravecounter)); ++ (uint32_t) atomic_inc_return_unchecked(&cache->gravecounter)); + + /* do the multiway lock magic */ + trap = lock_rename(cache->graveyard, dir); +diff --git a/fs/cachefiles/proc.c b/fs/cachefiles/proc.c +index eccd339..4c1d995 100644 +--- a/fs/cachefiles/proc.c ++++ b/fs/cachefiles/proc.c +@@ -14,9 +14,9 @@ + #include <linux/seq_file.h> + #include "internal.h" + +-atomic_t cachefiles_lookup_histogram[HZ]; +-atomic_t cachefiles_mkdir_histogram[HZ]; +-atomic_t cachefiles_create_histogram[HZ]; ++atomic_unchecked_t cachefiles_lookup_histogram[HZ]; ++atomic_unchecked_t cachefiles_mkdir_histogram[HZ]; ++atomic_unchecked_t cachefiles_create_histogram[HZ]; + + /* + * display the latency histogram +@@ -35,9 +35,9 @@ static int cachefiles_histogram_show(struct seq_file *m, void *v) + return 0; + default: + index = (unsigned long) v - 3; +- x = atomic_read(&cachefiles_lookup_histogram[index]); +- y = atomic_read(&cachefiles_mkdir_histogram[index]); +- z = atomic_read(&cachefiles_create_histogram[index]); ++ x = atomic_read_unchecked(&cachefiles_lookup_histogram[index]); ++ y = atomic_read_unchecked(&cachefiles_mkdir_histogram[index]); ++ z = atomic_read_unchecked(&cachefiles_create_histogram[index]); + if (x == 0 && y == 0 && z == 0) + return 0; + +diff --git a/fs/cachefiles/rdwr.c b/fs/cachefiles/rdwr.c +index 0e3c092..818480e 100644 +--- a/fs/cachefiles/rdwr.c ++++ b/fs/cachefiles/rdwr.c +@@ -945,7 +945,7 @@ int cachefiles_write_page(struct fscache_storage *op, struct page *page) + old_fs = get_fs(); + set_fs(KERNEL_DS); + ret = file->f_op->write( +- file, (const void __user *) data, len, &pos); ++ file, (const void __force_user *) data, len, &pos); + set_fs(old_fs); + kunmap(page); + if (ret != len) +diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c +index 3e8094b..cb3ff3d 100644 +--- a/fs/ceph/dir.c ++++ b/fs/ceph/dir.c +@@ -244,7 +244,7 @@ static int ceph_readdir(struct file *filp, void *dirent, filldir_t filldir) + struct ceph_fs_client *fsc = ceph_inode_to_client(inode); + struct ceph_mds_client *mdsc = fsc->mdsc; + unsigned frag = fpos_frag(filp->f_pos); +- int off = fpos_off(filp->f_pos); ++ unsigned int off = fpos_off(filp->f_pos); + int err; + u32 ftype; + struct ceph_mds_reply_info_parsed *rinfo; +@@ -598,7 +598,7 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry, + if (nd && + (nd->flags & LOOKUP_OPEN) && + !(nd->intent.open.flags & O_CREAT)) { +- int mode = nd->intent.open.create_mode & ~current->fs->umask; ++ int mode = nd->intent.open.create_mode & ~current_umask(); + return ceph_lookup_open(dir, dentry, nd, mode, 1); + } + +diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c +index 2704646..c581c91 100644 +--- a/fs/cifs/cifs_debug.c ++++ b/fs/cifs/cifs_debug.c +@@ -265,8 +265,8 @@ static ssize_t cifs_stats_proc_write(struct file *file, + + if (c == '1' || c == 'y' || c == 'Y' || c == '0') { + #ifdef CONFIG_CIFS_STATS2 +- atomic_set(&totBufAllocCount, 0); +- atomic_set(&totSmBufAllocCount, 0); ++ atomic_set_unchecked(&totBufAllocCount, 0); ++ atomic_set_unchecked(&totSmBufAllocCount, 0); + #endif /* CONFIG_CIFS_STATS2 */ + spin_lock(&cifs_tcp_ses_lock); + list_for_each(tmp1, &cifs_tcp_ses_list) { +@@ -279,25 +279,25 @@ static ssize_t cifs_stats_proc_write(struct file *file, + tcon = list_entry(tmp3, + struct cifs_tcon, + tcon_list); +- atomic_set(&tcon->num_smbs_sent, 0); +- atomic_set(&tcon->num_writes, 0); +- atomic_set(&tcon->num_reads, 0); +- atomic_set(&tcon->num_oplock_brks, 0); +- atomic_set(&tcon->num_opens, 0); +- atomic_set(&tcon->num_posixopens, 0); +- atomic_set(&tcon->num_posixmkdirs, 0); +- atomic_set(&tcon->num_closes, 0); +- atomic_set(&tcon->num_deletes, 0); +- atomic_set(&tcon->num_mkdirs, 0); +- atomic_set(&tcon->num_rmdirs, 0); +- atomic_set(&tcon->num_renames, 0); +- atomic_set(&tcon->num_t2renames, 0); +- atomic_set(&tcon->num_ffirst, 0); +- atomic_set(&tcon->num_fnext, 0); +- atomic_set(&tcon->num_fclose, 0); +- atomic_set(&tcon->num_hardlinks, 0); +- atomic_set(&tcon->num_symlinks, 0); +- atomic_set(&tcon->num_locks, 0); ++ atomic_set_unchecked(&tcon->num_smbs_sent, 0); ++ atomic_set_unchecked(&tcon->num_writes, 0); ++ atomic_set_unchecked(&tcon->num_reads, 0); ++ atomic_set_unchecked(&tcon->num_oplock_brks, 0); ++ atomic_set_unchecked(&tcon->num_opens, 0); ++ atomic_set_unchecked(&tcon->num_posixopens, 0); ++ atomic_set_unchecked(&tcon->num_posixmkdirs, 0); ++ atomic_set_unchecked(&tcon->num_closes, 0); ++ atomic_set_unchecked(&tcon->num_deletes, 0); ++ atomic_set_unchecked(&tcon->num_mkdirs, 0); ++ atomic_set_unchecked(&tcon->num_rmdirs, 0); ++ atomic_set_unchecked(&tcon->num_renames, 0); ++ atomic_set_unchecked(&tcon->num_t2renames, 0); ++ atomic_set_unchecked(&tcon->num_ffirst, 0); ++ atomic_set_unchecked(&tcon->num_fnext, 0); ++ atomic_set_unchecked(&tcon->num_fclose, 0); ++ atomic_set_unchecked(&tcon->num_hardlinks, 0); ++ atomic_set_unchecked(&tcon->num_symlinks, 0); ++ atomic_set_unchecked(&tcon->num_locks, 0); + } + } + } +@@ -327,8 +327,8 @@ static int cifs_stats_proc_show(struct seq_file *m, void *v) + smBufAllocCount.counter, cifs_min_small); + #ifdef CONFIG_CIFS_STATS2 + seq_printf(m, "Total Large %d Small %d Allocations\n", +- atomic_read(&totBufAllocCount), +- atomic_read(&totSmBufAllocCount)); ++ atomic_read_unchecked(&totBufAllocCount), ++ atomic_read_unchecked(&totSmBufAllocCount)); + #endif /* CONFIG_CIFS_STATS2 */ + + seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount)); +@@ -357,41 +357,41 @@ static int cifs_stats_proc_show(struct seq_file *m, void *v) + if (tcon->need_reconnect) + seq_puts(m, "\tDISCONNECTED "); + seq_printf(m, "\nSMBs: %d Oplock Breaks: %d", +- atomic_read(&tcon->num_smbs_sent), +- atomic_read(&tcon->num_oplock_brks)); ++ atomic_read_unchecked(&tcon->num_smbs_sent), ++ atomic_read_unchecked(&tcon->num_oplock_brks)); + seq_printf(m, "\nReads: %d Bytes: %lld", +- atomic_read(&tcon->num_reads), ++ atomic_read_unchecked(&tcon->num_reads), + (long long)(tcon->bytes_read)); + seq_printf(m, "\nWrites: %d Bytes: %lld", +- atomic_read(&tcon->num_writes), ++ atomic_read_unchecked(&tcon->num_writes), + (long long)(tcon->bytes_written)); + seq_printf(m, "\nFlushes: %d", +- atomic_read(&tcon->num_flushes)); ++ atomic_read_unchecked(&tcon->num_flushes)); + seq_printf(m, "\nLocks: %d HardLinks: %d " + "Symlinks: %d", +- atomic_read(&tcon->num_locks), +- atomic_read(&tcon->num_hardlinks), +- atomic_read(&tcon->num_symlinks)); ++ atomic_read_unchecked(&tcon->num_locks), ++ atomic_read_unchecked(&tcon->num_hardlinks), ++ atomic_read_unchecked(&tcon->num_symlinks)); + seq_printf(m, "\nOpens: %d Closes: %d " + "Deletes: %d", +- atomic_read(&tcon->num_opens), +- atomic_read(&tcon->num_closes), +- atomic_read(&tcon->num_deletes)); ++ atomic_read_unchecked(&tcon->num_opens), ++ atomic_read_unchecked(&tcon->num_closes), ++ atomic_read_unchecked(&tcon->num_deletes)); + seq_printf(m, "\nPosix Opens: %d " + "Posix Mkdirs: %d", +- atomic_read(&tcon->num_posixopens), +- atomic_read(&tcon->num_posixmkdirs)); ++ atomic_read_unchecked(&tcon->num_posixopens), ++ atomic_read_unchecked(&tcon->num_posixmkdirs)); + seq_printf(m, "\nMkdirs: %d Rmdirs: %d", +- atomic_read(&tcon->num_mkdirs), +- atomic_read(&tcon->num_rmdirs)); ++ atomic_read_unchecked(&tcon->num_mkdirs), ++ atomic_read_unchecked(&tcon->num_rmdirs)); + seq_printf(m, "\nRenames: %d T2 Renames %d", +- atomic_read(&tcon->num_renames), +- atomic_read(&tcon->num_t2renames)); ++ atomic_read_unchecked(&tcon->num_renames), ++ atomic_read_unchecked(&tcon->num_t2renames)); + seq_printf(m, "\nFindFirst: %d FNext %d " + "FClose %d", +- atomic_read(&tcon->num_ffirst), +- atomic_read(&tcon->num_fnext), +- atomic_read(&tcon->num_fclose)); ++ atomic_read_unchecked(&tcon->num_ffirst), ++ atomic_read_unchecked(&tcon->num_fnext), ++ atomic_read_unchecked(&tcon->num_fclose)); + } + } + } +diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c +index 541ef81..a78deb8 100644 +--- a/fs/cifs/cifsfs.c ++++ b/fs/cifs/cifsfs.c +@@ -985,7 +985,7 @@ cifs_init_request_bufs(void) + cifs_req_cachep = kmem_cache_create("cifs_request", + CIFSMaxBufSize + + MAX_CIFS_HDR_SIZE, 0, +- SLAB_HWCACHE_ALIGN, NULL); ++ SLAB_HWCACHE_ALIGN | SLAB_USERCOPY, NULL); + if (cifs_req_cachep == NULL) + return -ENOMEM; + +@@ -1012,7 +1012,7 @@ cifs_init_request_bufs(void) + efficient to alloc 1 per page off the slab compared to 17K (5page) + alloc of large cifs buffers even when page debugging is on */ + cifs_sm_req_cachep = kmem_cache_create("cifs_small_rq", +- MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN, ++ MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN | SLAB_USERCOPY, + NULL); + if (cifs_sm_req_cachep == NULL) { + mempool_destroy(cifs_req_poolp); +@@ -1097,8 +1097,8 @@ init_cifs(void) + atomic_set(&bufAllocCount, 0); + atomic_set(&smBufAllocCount, 0); + #ifdef CONFIG_CIFS_STATS2 +- atomic_set(&totBufAllocCount, 0); +- atomic_set(&totSmBufAllocCount, 0); ++ atomic_set_unchecked(&totBufAllocCount, 0); ++ atomic_set_unchecked(&totSmBufAllocCount, 0); + #endif /* CONFIG_CIFS_STATS2 */ + + atomic_set(&midCount, 0); +diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h +index 73fea28..b996b84 100644 +--- a/fs/cifs/cifsglob.h ++++ b/fs/cifs/cifsglob.h +@@ -439,28 +439,28 @@ struct cifs_tcon { + __u16 Flags; /* optional support bits */ + enum statusEnum tidStatus; + #ifdef CONFIG_CIFS_STATS +- atomic_t num_smbs_sent; +- atomic_t num_writes; +- atomic_t num_reads; +- atomic_t num_flushes; +- atomic_t num_oplock_brks; +- atomic_t num_opens; +- atomic_t num_closes; +- atomic_t num_deletes; +- atomic_t num_mkdirs; +- atomic_t num_posixopens; +- atomic_t num_posixmkdirs; +- atomic_t num_rmdirs; +- atomic_t num_renames; +- atomic_t num_t2renames; +- atomic_t num_ffirst; +- atomic_t num_fnext; +- atomic_t num_fclose; +- atomic_t num_hardlinks; +- atomic_t num_symlinks; +- atomic_t num_locks; +- atomic_t num_acl_get; +- atomic_t num_acl_set; ++ atomic_unchecked_t num_smbs_sent; ++ atomic_unchecked_t num_writes; ++ atomic_unchecked_t num_reads; ++ atomic_unchecked_t num_flushes; ++ atomic_unchecked_t num_oplock_brks; ++ atomic_unchecked_t num_opens; ++ atomic_unchecked_t num_closes; ++ atomic_unchecked_t num_deletes; ++ atomic_unchecked_t num_mkdirs; ++ atomic_unchecked_t num_posixopens; ++ atomic_unchecked_t num_posixmkdirs; ++ atomic_unchecked_t num_rmdirs; ++ atomic_unchecked_t num_renames; ++ atomic_unchecked_t num_t2renames; ++ atomic_unchecked_t num_ffirst; ++ atomic_unchecked_t num_fnext; ++ atomic_unchecked_t num_fclose; ++ atomic_unchecked_t num_hardlinks; ++ atomic_unchecked_t num_symlinks; ++ atomic_unchecked_t num_locks; ++ atomic_unchecked_t num_acl_get; ++ atomic_unchecked_t num_acl_set; + #ifdef CONFIG_CIFS_STATS2 + unsigned long long time_writes; + unsigned long long time_reads; +@@ -677,7 +677,7 @@ convert_delimiter(char *path, char delim) + } + + #ifdef CONFIG_CIFS_STATS +-#define cifs_stats_inc atomic_inc ++#define cifs_stats_inc atomic_inc_unchecked + + static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon, + unsigned int bytes) +@@ -1036,8 +1036,8 @@ GLOBAL_EXTERN atomic_t tconInfoReconnectCount; + /* Various Debug counters */ + GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */ + #ifdef CONFIG_CIFS_STATS2 +-GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */ +-GLOBAL_EXTERN atomic_t totSmBufAllocCount; ++GLOBAL_EXTERN atomic_unchecked_t totBufAllocCount; /* total allocated over all time */ ++GLOBAL_EXTERN atomic_unchecked_t totSmBufAllocCount; + #endif + GLOBAL_EXTERN atomic_t smBufAllocCount; + GLOBAL_EXTERN atomic_t midCount; +diff --git a/fs/cifs/link.c b/fs/cifs/link.c +index 6b0e064..94e6c3c 100644 +--- a/fs/cifs/link.c ++++ b/fs/cifs/link.c +@@ -600,7 +600,7 @@ symlink_exit: + + void cifs_put_link(struct dentry *direntry, struct nameidata *nd, void *cookie) + { +- char *p = nd_get_link(nd); ++ const char *p = nd_get_link(nd); + if (!IS_ERR(p)) + kfree(p); + } +diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c +index c29d1aa..58018da 100644 +--- a/fs/cifs/misc.c ++++ b/fs/cifs/misc.c +@@ -156,7 +156,7 @@ cifs_buf_get(void) + memset(ret_buf, 0, sizeof(struct smb_hdr) + 3); + atomic_inc(&bufAllocCount); + #ifdef CONFIG_CIFS_STATS2 +- atomic_inc(&totBufAllocCount); ++ atomic_inc_unchecked(&totBufAllocCount); + #endif /* CONFIG_CIFS_STATS2 */ + } + +@@ -191,7 +191,7 @@ cifs_small_buf_get(void) + /* memset(ret_buf, 0, sizeof(struct smb_hdr) + 27);*/ + atomic_inc(&smBufAllocCount); + #ifdef CONFIG_CIFS_STATS2 +- atomic_inc(&totSmBufAllocCount); ++ atomic_inc_unchecked(&totSmBufAllocCount); + #endif /* CONFIG_CIFS_STATS2 */ + + } +diff --git a/fs/coda/cache.c b/fs/coda/cache.c +index 6901578..d402eb5 100644 +--- a/fs/coda/cache.c ++++ b/fs/coda/cache.c +@@ -24,7 +24,7 @@ + #include "coda_linux.h" + #include "coda_cache.h" + +-static atomic_t permission_epoch = ATOMIC_INIT(0); ++static atomic_unchecked_t permission_epoch = ATOMIC_INIT(0); + + /* replace or extend an acl cache hit */ + void coda_cache_enter(struct inode *inode, int mask) +@@ -32,7 +32,7 @@ void coda_cache_enter(struct inode *inode, int mask) + struct coda_inode_info *cii = ITOC(inode); + + spin_lock(&cii->c_lock); +- cii->c_cached_epoch = atomic_read(&permission_epoch); ++ cii->c_cached_epoch = atomic_read_unchecked(&permission_epoch); + if (cii->c_uid != current_fsuid()) { + cii->c_uid = current_fsuid(); + cii->c_cached_perm = mask; +@@ -46,14 +46,14 @@ void coda_cache_clear_inode(struct inode *inode) + { + struct coda_inode_info *cii = ITOC(inode); + spin_lock(&cii->c_lock); +- cii->c_cached_epoch = atomic_read(&permission_epoch) - 1; ++ cii->c_cached_epoch = atomic_read_unchecked(&permission_epoch) - 1; + spin_unlock(&cii->c_lock); + } + + /* remove all acl caches */ + void coda_cache_clear_all(struct super_block *sb) + { +- atomic_inc(&permission_epoch); ++ atomic_inc_unchecked(&permission_epoch); + } + + +@@ -66,7 +66,7 @@ int coda_cache_check(struct inode *inode, int mask) + spin_lock(&cii->c_lock); + hit = (mask & cii->c_cached_perm) == mask && + cii->c_uid == current_fsuid() && +- cii->c_cached_epoch == atomic_read(&permission_epoch); ++ cii->c_cached_epoch == atomic_read_unchecked(&permission_epoch); + spin_unlock(&cii->c_lock); + + return hit; +diff --git a/fs/compat.c b/fs/compat.c +index f2944ac..62845d2 100644 +--- a/fs/compat.c ++++ b/fs/compat.c +@@ -490,7 +490,7 @@ compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p) + + set_fs(KERNEL_DS); + /* The __user pointer cast is valid because of the set_fs() */ +- ret = sys_io_setup(nr_reqs, (aio_context_t __user *) &ctx64); ++ ret = sys_io_setup(nr_reqs, (aio_context_t __force_user *) &ctx64); + set_fs(oldfs); + /* truncating is ok because it's a user address */ + if (!ret) +@@ -548,7 +548,7 @@ ssize_t compat_rw_copy_check_uvector(int type, + goto out; + + ret = -EINVAL; +- if (nr_segs > UIO_MAXIOV || nr_segs < 0) ++ if (nr_segs > UIO_MAXIOV) + goto out; + if (nr_segs > fast_segs) { + ret = -ENOMEM; +@@ -831,6 +831,7 @@ struct compat_old_linux_dirent { + + struct compat_readdir_callback { + struct compat_old_linux_dirent __user *dirent; ++ struct file * file; + int result; + }; + +@@ -848,6 +849,10 @@ static int compat_fillonedir(void *__buf, const char *name, int namlen, + buf->result = -EOVERFLOW; + return -EOVERFLOW; + } ++ ++ if (!gr_acl_handle_filldir(buf->file, name, namlen, ino)) ++ return 0; ++ + buf->result++; + dirent = buf->dirent; + if (!access_ok(VERIFY_WRITE, dirent, +@@ -880,6 +885,7 @@ asmlinkage long compat_sys_old_readdir(unsigned int fd, + + buf.result = 0; + buf.dirent = dirent; ++ buf.file = file; + + error = vfs_readdir(file, compat_fillonedir, &buf); + if (buf.result) +@@ -900,6 +906,7 @@ struct compat_linux_dirent { + struct compat_getdents_callback { + struct compat_linux_dirent __user *current_dir; + struct compat_linux_dirent __user *previous; ++ struct file * file; + int count; + int error; + }; +@@ -921,6 +928,10 @@ static int compat_filldir(void *__buf, const char *name, int namlen, + buf->error = -EOVERFLOW; + return -EOVERFLOW; + } ++ ++ if (!gr_acl_handle_filldir(buf->file, name, namlen, ino)) ++ return 0; ++ + dirent = buf->previous; + if (dirent) { + if (__put_user(offset, &dirent->d_off)) +@@ -968,6 +979,7 @@ asmlinkage long compat_sys_getdents(unsigned int fd, + buf.previous = NULL; + buf.count = count; + buf.error = 0; ++ buf.file = file; + + error = vfs_readdir(file, compat_filldir, &buf); + if (error >= 0) +@@ -989,6 +1001,7 @@ out: + struct compat_getdents_callback64 { + struct linux_dirent64 __user *current_dir; + struct linux_dirent64 __user *previous; ++ struct file * file; + int count; + int error; + }; +@@ -1005,6 +1018,10 @@ static int compat_filldir64(void * __buf, const char * name, int namlen, loff_t + buf->error = -EINVAL; /* only used if we fail.. */ + if (reclen > buf->count) + return -EINVAL; ++ ++ if (!gr_acl_handle_filldir(buf->file, name, namlen, ino)) ++ return 0; ++ + dirent = buf->previous; + + if (dirent) { +@@ -1056,13 +1073,14 @@ asmlinkage long compat_sys_getdents64(unsigned int fd, + buf.previous = NULL; + buf.count = count; + buf.error = 0; ++ buf.file = file; + + error = vfs_readdir(file, compat_filldir64, &buf); + if (error >= 0) + error = buf.error; + lastdirent = buf.previous; + if (lastdirent) { +- typeof(lastdirent->d_off) d_off = file->f_pos; ++ typeof(((struct linux_dirent64 *)0)->d_off) d_off = file->f_pos; + if (__put_user_unaligned(d_off, &lastdirent->d_off)) + error = -EFAULT; + else +diff --git a/fs/compat_binfmt_elf.c b/fs/compat_binfmt_elf.c +index 112e45a..b59845b 100644 +--- a/fs/compat_binfmt_elf.c ++++ b/fs/compat_binfmt_elf.c +@@ -30,11 +30,13 @@ + #undef elf_phdr + #undef elf_shdr + #undef elf_note ++#undef elf_dyn + #undef elf_addr_t + #define elfhdr elf32_hdr + #define elf_phdr elf32_phdr + #define elf_shdr elf32_shdr + #define elf_note elf32_note ++#define elf_dyn Elf32_Dyn + #define elf_addr_t Elf32_Addr + + /* +diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c +index debdfe0..75d31d4 100644 +--- a/fs/compat_ioctl.c ++++ b/fs/compat_ioctl.c +@@ -210,6 +210,8 @@ static int do_video_set_spu_palette(unsigned int fd, unsigned int cmd, + + err = get_user(palp, &up->palette); + err |= get_user(length, &up->length); ++ if (err) ++ return -EFAULT; + + up_native = compat_alloc_user_space(sizeof(struct video_spu_palette)); + err = put_user(compat_ptr(palp), &up_native->palette); +@@ -621,7 +623,7 @@ static int serial_struct_ioctl(unsigned fd, unsigned cmd, + return -EFAULT; + if (__get_user(udata, &ss32->iomem_base)) + return -EFAULT; +- ss.iomem_base = compat_ptr(udata); ++ ss.iomem_base = (unsigned char __force_kernel *)compat_ptr(udata); + if (__get_user(ss.iomem_reg_shift, &ss32->iomem_reg_shift) || + __get_user(ss.port_high, &ss32->port_high)) + return -EFAULT; +@@ -796,7 +798,7 @@ static int compat_ioctl_preallocate(struct file *file, + copy_in_user(&p->l_len, &p32->l_len, sizeof(s64)) || + copy_in_user(&p->l_sysid, &p32->l_sysid, sizeof(s32)) || + copy_in_user(&p->l_pid, &p32->l_pid, sizeof(u32)) || +- copy_in_user(&p->l_pad, &p32->l_pad, 4*sizeof(u32))) ++ copy_in_user(p->l_pad, &p32->l_pad, 4*sizeof(u32))) + return -EFAULT; + + return ioctl_preallocate(file, p); +@@ -1610,8 +1612,8 @@ asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, + static int __init init_sys32_ioctl_cmp(const void *p, const void *q) + { + unsigned int a, b; +- a = *(unsigned int *)p; +- b = *(unsigned int *)q; ++ a = *(const unsigned int *)p; ++ b = *(const unsigned int *)q; + if (a > b) + return 1; + if (a < b) +diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c +index 7e6c52d..94bc756 100644 +--- a/fs/configfs/dir.c ++++ b/fs/configfs/dir.c +@@ -1564,7 +1564,8 @@ static int configfs_readdir(struct file * filp, void * dirent, filldir_t filldir + } + for (p=q->next; p!= &parent_sd->s_children; p=p->next) { + struct configfs_dirent *next; +- const char * name; ++ const unsigned char * name; ++ char d_name[sizeof(next->s_dentry->d_iname)]; + int len; + struct inode *inode = NULL; + +@@ -1574,7 +1575,12 @@ static int configfs_readdir(struct file * filp, void * dirent, filldir_t filldir + continue; + + name = configfs_get_name(next); +- len = strlen(name); ++ if (next->s_dentry && name == next->s_dentry->d_iname) { ++ len = next->s_dentry->d_name.len; ++ memcpy(d_name, name, len); ++ name = d_name; ++ } else ++ len = strlen(name); + + /* + * We'll have a dentry and an inode for +diff --git a/fs/dcache.c b/fs/dcache.c +index b80531c..8ca7e2d 100644 +--- a/fs/dcache.c ++++ b/fs/dcache.c +@@ -3084,7 +3084,7 @@ void __init vfs_caches_init(unsigned long mempages) + mempages -= reserve; + + names_cachep = kmem_cache_create("names_cache", PATH_MAX, 0, +- SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL); ++ SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_USERCOPY, NULL); + + dcache_init(); + inode_init(); +diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c +index b80bc84..0d46d1a 100644 +--- a/fs/debugfs/inode.c ++++ b/fs/debugfs/inode.c +@@ -408,7 +408,11 @@ EXPORT_SYMBOL_GPL(debugfs_create_file); + struct dentry *debugfs_create_dir(const char *name, struct dentry *parent) + { + return debugfs_create_file(name, ++#ifdef CONFIG_GRKERNSEC_SYSFS_RESTRICT ++ S_IFDIR | S_IRWXU, ++#else + S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO, ++#endif + parent, NULL, NULL); + } + EXPORT_SYMBOL_GPL(debugfs_create_dir); +diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c +index ab35b11..b30af66 100644 +--- a/fs/ecryptfs/inode.c ++++ b/fs/ecryptfs/inode.c +@@ -672,7 +672,7 @@ static int ecryptfs_readlink_lower(struct dentry *dentry, char **buf, + old_fs = get_fs(); + set_fs(get_ds()); + rc = lower_dentry->d_inode->i_op->readlink(lower_dentry, +- (char __user *)lower_buf, ++ (char __force_user *)lower_buf, + lower_bufsiz); + set_fs(old_fs); + if (rc < 0) +@@ -718,7 +718,7 @@ static void *ecryptfs_follow_link(struct dentry *dentry, struct nameidata *nd) + } + old_fs = get_fs(); + set_fs(get_ds()); +- rc = dentry->d_inode->i_op->readlink(dentry, (char __user *)buf, len); ++ rc = dentry->d_inode->i_op->readlink(dentry, (char __force_user *)buf, len); + set_fs(old_fs); + if (rc < 0) { + kfree(buf); +@@ -733,7 +733,7 @@ out: + static void + ecryptfs_put_link(struct dentry *dentry, struct nameidata *nd, void *ptr) + { +- char *buf = nd_get_link(nd); ++ const char *buf = nd_get_link(nd); + if (!IS_ERR(buf)) { + /* Free the char* */ + kfree(buf); +diff --git a/fs/ecryptfs/miscdev.c b/fs/ecryptfs/miscdev.c +index c0038f6..47ab347 100644 +--- a/fs/ecryptfs/miscdev.c ++++ b/fs/ecryptfs/miscdev.c +@@ -355,7 +355,7 @@ check_list: + goto out_unlock_msg_ctx; + i = PKT_TYPE_SIZE + PKT_CTR_SIZE; + if (msg_ctx->msg) { +- if (copy_to_user(&buf[i], packet_length, packet_length_size)) ++ if (packet_length_size > sizeof(packet_length) || copy_to_user(&buf[i], packet_length, packet_length_size)) + goto out_unlock_msg_ctx; + i += packet_length_size; + if (copy_to_user(&buf[i], msg_ctx->msg, msg_ctx->msg_size)) +diff --git a/fs/ecryptfs/read_write.c b/fs/ecryptfs/read_write.c +index b2a34a1..162fa69 100644 +--- a/fs/ecryptfs/read_write.c ++++ b/fs/ecryptfs/read_write.c +@@ -48,7 +48,7 @@ int ecryptfs_write_lower(struct inode *ecryptfs_inode, char *data, + return -EIO; + fs_save = get_fs(); + set_fs(get_ds()); +- rc = vfs_write(lower_file, data, size, &offset); ++ rc = vfs_write(lower_file, (const char __force_user *)data, size, &offset); + set_fs(fs_save); + mark_inode_dirty_sync(ecryptfs_inode); + return rc; +@@ -244,7 +244,7 @@ int ecryptfs_read_lower(char *data, loff_t offset, size_t size, + return -EIO; + fs_save = get_fs(); + set_fs(get_ds()); +- rc = vfs_read(lower_file, data, size, &offset); ++ rc = vfs_read(lower_file, (char __force_user *)data, size, &offset); + set_fs(fs_save); + return rc; + } +diff --git a/fs/exec.c b/fs/exec.c +index 29e5f84..ec81452 100644 +--- a/fs/exec.c ++++ b/fs/exec.c +@@ -55,6 +55,15 @@ + #include <linux/pipe_fs_i.h> + #include <linux/oom.h> + #include <linux/compat.h> ++#include <linux/random.h> ++#include <linux/seq_file.h> ++ ++#ifdef CONFIG_PAX_REFCOUNT ++#include <linux/kallsyms.h> ++#include <linux/kdebug.h> ++#endif ++ ++#include <trace/events/fs.h> + + #include <asm/uaccess.h> + #include <asm/mmu_context.h> +@@ -66,6 +75,18 @@ + + #include <trace/events/sched.h> + ++#ifdef CONFIG_PAX_HAVE_ACL_FLAGS ++void __weak pax_set_initial_flags(struct linux_binprm *bprm) ++{ ++ WARN_ONCE(1, "PAX: PAX_HAVE_ACL_FLAGS was enabled without providing the pax_set_initial_flags callback, this is probably not what you wanted.\n"); ++} ++#endif ++ ++#ifdef CONFIG_PAX_HOOK_ACL_FLAGS ++void (*pax_set_initial_flags_func)(struct linux_binprm *bprm); ++EXPORT_SYMBOL(pax_set_initial_flags_func); ++#endif ++ + int core_uses_pid; + char core_pattern[CORENAME_MAX_SIZE] = "core"; + unsigned int core_pipe_limit; +@@ -75,7 +96,7 @@ struct core_name { + char *corename; + int used, size; + }; +-static atomic_t call_count = ATOMIC_INIT(1); ++static atomic_unchecked_t call_count = ATOMIC_INIT(1); + + /* The maximal length of core_pattern is also specified in sysctl.c */ + +@@ -191,18 +212,10 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos, + int write) + { + struct page *page; +- int ret; + +-#ifdef CONFIG_STACK_GROWSUP +- if (write) { +- ret = expand_downwards(bprm->vma, pos); +- if (ret < 0) +- return NULL; +- } +-#endif +- ret = get_user_pages(current, bprm->mm, pos, +- 1, write, 1, &page, NULL); +- if (ret <= 0) ++ if (0 > expand_downwards(bprm->vma, pos)) ++ return NULL; ++ if (0 >= get_user_pages(current, bprm->mm, pos, 1, write, 1, &page, NULL)) + return NULL; + + if (write) { +@@ -218,6 +231,17 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos, + if (size <= ARG_MAX) + return page; + ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ // only allow 512KB for argv+env on suid/sgid binaries ++ // to prevent easy ASLR exhaustion ++ if (((bprm->cred->euid != current_euid()) || ++ (bprm->cred->egid != current_egid())) && ++ (size > (512 * 1024))) { ++ put_page(page); ++ return NULL; ++ } ++#endif ++ + /* + * Limit to 1/4-th the stack size for the argv+env strings. + * This ensures that: +@@ -277,6 +301,11 @@ static int __bprm_mm_init(struct linux_binprm *bprm) + vma->vm_end = STACK_TOP_MAX; + vma->vm_start = vma->vm_end - PAGE_SIZE; + vma->vm_flags = VM_STACK_FLAGS | VM_STACK_INCOMPLETE_SETUP; ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ vma->vm_flags &= ~(VM_EXEC | VM_MAYEXEC); ++#endif ++ + vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); + INIT_LIST_HEAD(&vma->anon_vma_chain); + +@@ -291,6 +320,12 @@ static int __bprm_mm_init(struct linux_binprm *bprm) + mm->stack_vm = mm->total_vm = 1; + up_write(&mm->mmap_sem); + bprm->p = vma->vm_end - sizeof(void *); ++ ++#ifdef CONFIG_PAX_RANDUSTACK ++ if (randomize_va_space) ++ bprm->p ^= random32() & ~PAGE_MASK; ++#endif ++ + return 0; + err: + up_write(&mm->mmap_sem); +@@ -399,19 +434,7 @@ err: + return err; + } + +-struct user_arg_ptr { +-#ifdef CONFIG_COMPAT +- bool is_compat; +-#endif +- union { +- const char __user *const __user *native; +-#ifdef CONFIG_COMPAT +- compat_uptr_t __user *compat; +-#endif +- } ptr; +-}; +- +-static const char __user *get_user_arg_ptr(struct user_arg_ptr argv, int nr) ++const char __user *get_user_arg_ptr(struct user_arg_ptr argv, int nr) + { + const char __user *native; + +@@ -420,14 +443,14 @@ static const char __user *get_user_arg_ptr(struct user_arg_ptr argv, int nr) + compat_uptr_t compat; + + if (get_user(compat, argv.ptr.compat + nr)) +- return ERR_PTR(-EFAULT); ++ return (const char __force_user *)ERR_PTR(-EFAULT); + + return compat_ptr(compat); + } + #endif + + if (get_user(native, argv.ptr.native + nr)) +- return ERR_PTR(-EFAULT); ++ return (const char __force_user *)ERR_PTR(-EFAULT); + + return native; + } +@@ -446,7 +469,7 @@ static int count(struct user_arg_ptr argv, int max) + if (!p) + break; + +- if (IS_ERR(p)) ++ if (IS_ERR((const char __force_kernel *)p)) + return -EFAULT; + + if (i++ >= max) +@@ -480,7 +503,7 @@ static int copy_strings(int argc, struct user_arg_ptr argv, + + ret = -EFAULT; + str = get_user_arg_ptr(argv, argc); +- if (IS_ERR(str)) ++ if (IS_ERR((const char __force_kernel *)str)) + goto out; + + len = strnlen_user(str, MAX_ARG_STRLEN); +@@ -562,7 +585,7 @@ int copy_strings_kernel(int argc, const char *const *__argv, + int r; + mm_segment_t oldfs = get_fs(); + struct user_arg_ptr argv = { +- .ptr.native = (const char __user *const __user *)__argv, ++ .ptr.native = (const char __force_user *const __force_user *)__argv, + }; + + set_fs(KERNEL_DS); +@@ -597,7 +620,8 @@ static int shift_arg_pages(struct vm_area_struct *vma, unsigned long shift) + unsigned long new_end = old_end - shift; + struct mmu_gather tlb; + +- BUG_ON(new_start > new_end); ++ if (new_start >= new_end || new_start < mmap_min_addr) ++ return -ENOMEM; + + /* + * ensure there are no vmas between where we want to go +@@ -606,6 +630,10 @@ static int shift_arg_pages(struct vm_area_struct *vma, unsigned long shift) + if (vma != find_vma(mm, new_start)) + return -EFAULT; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ BUG_ON(pax_find_mirror_vma(vma)); ++#endif ++ + /* + * cover the whole range: [new_start, old_end) + */ +@@ -686,10 +714,6 @@ int setup_arg_pages(struct linux_binprm *bprm, + stack_top = arch_align_stack(stack_top); + stack_top = PAGE_ALIGN(stack_top); + +- if (unlikely(stack_top < mmap_min_addr) || +- unlikely(vma->vm_end - vma->vm_start >= stack_top - mmap_min_addr)) +- return -ENOMEM; +- + stack_shift = vma->vm_end - stack_top; + + bprm->p -= stack_shift; +@@ -701,8 +725,28 @@ int setup_arg_pages(struct linux_binprm *bprm, + bprm->exec -= stack_shift; + + down_write(&mm->mmap_sem); ++ ++ /* Move stack pages down in memory. */ ++ if (stack_shift) { ++ ret = shift_arg_pages(vma, stack_shift); ++ if (ret) ++ goto out_unlock; ++ } ++ + vm_flags = VM_STACK_FLAGS; + ++#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) ++ if (mm->pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) { ++ vm_flags &= ~VM_EXEC; ++ ++#ifdef CONFIG_PAX_MPROTECT ++ if (mm->pax_flags & MF_PAX_MPROTECT) ++ vm_flags &= ~VM_MAYEXEC; ++#endif ++ ++ } ++#endif ++ + /* + * Adjust stack execute permissions; explicitly enable for + * EXSTACK_ENABLE_X, disable for EXSTACK_DISABLE_X and leave alone +@@ -721,13 +765,6 @@ int setup_arg_pages(struct linux_binprm *bprm, + goto out_unlock; + BUG_ON(prev != vma); + +- /* Move stack pages down in memory. */ +- if (stack_shift) { +- ret = shift_arg_pages(vma, stack_shift); +- if (ret) +- goto out_unlock; +- } +- + /* mprotect_fixup is overkill to remove the temporary stack flags */ + vma->vm_flags &= ~VM_STACK_INCOMPLETE_SETUP; + +@@ -785,6 +822,8 @@ struct file *open_exec(const char *name) + + fsnotify_open(file); + ++ trace_open_exec(name); ++ + err = deny_write_access(file); + if (err) + goto exit; +@@ -808,7 +847,7 @@ int kernel_read(struct file *file, loff_t offset, + old_fs = get_fs(); + set_fs(get_ds()); + /* The cast to a user pointer is valid due to the set_fs() */ +- result = vfs_read(file, (void __user *)addr, count, &pos); ++ result = vfs_read(file, (void __force_user *)addr, count, &pos); + set_fs(old_fs); + return result; + } +@@ -1254,7 +1293,7 @@ static int check_unsafe_exec(struct linux_binprm *bprm) + } + rcu_read_unlock(); + +- if (p->fs->users > n_fs) { ++ if (atomic_read(&p->fs->users) > n_fs) { + bprm->unsafe |= LSM_UNSAFE_SHARE; + } else { + res = -EAGAIN; +@@ -1451,6 +1490,28 @@ int search_binary_handler(struct linux_binprm *bprm,struct pt_regs *regs) + + EXPORT_SYMBOL(search_binary_handler); + ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++static DEFINE_PER_CPU(u64, exec_counter); ++static int __init init_exec_counters(void) ++{ ++ unsigned int cpu; ++ ++ for_each_possible_cpu(cpu) { ++ per_cpu(exec_counter, cpu) = (u64)cpu; ++ } ++ ++ return 0; ++} ++early_initcall(init_exec_counters); ++static inline void increment_exec_counter(void) ++{ ++ BUILD_BUG_ON(NR_CPUS > (1 << 16)); ++ current->exec_id = this_cpu_add_return(exec_counter, 1 << 16); ++} ++#else ++static inline void increment_exec_counter(void) {} ++#endif ++ + /* + * sys_execve() executes a new program. + */ +@@ -1459,6 +1520,11 @@ static int do_execve_common(const char *filename, + struct user_arg_ptr envp, + struct pt_regs *regs) + { ++#ifdef CONFIG_GRKERNSEC ++ struct file *old_exec_file; ++ struct acl_subject_label *old_acl; ++ struct rlimit old_rlim[RLIM_NLIMITS]; ++#endif + struct linux_binprm *bprm; + struct file *file; + struct files_struct *displaced; +@@ -1466,6 +1532,8 @@ static int do_execve_common(const char *filename, + int retval; + const struct cred *cred = current_cred(); + ++ gr_learn_resource(current, RLIMIT_NPROC, atomic_read(¤t->cred->user->processes), 1); ++ + /* + * We move the actual failure in case of RLIMIT_NPROC excess from + * set*uid() to execve() because too many poorly written programs +@@ -1506,12 +1574,27 @@ static int do_execve_common(const char *filename, + if (IS_ERR(file)) + goto out_unmark; + ++ if (gr_ptrace_readexec(file, bprm->unsafe)) { ++ retval = -EPERM; ++ goto out_file; ++ } ++ + sched_exec(); + + bprm->file = file; + bprm->filename = filename; + bprm->interp = filename; + ++ if (gr_process_user_ban()) { ++ retval = -EPERM; ++ goto out_file; ++ } ++ ++ if (!gr_acl_handle_execve(file->f_dentry, file->f_vfsmnt)) { ++ retval = -EACCES; ++ goto out_file; ++ } ++ + retval = bprm_mm_init(bprm); + if (retval) + goto out_file; +@@ -1528,24 +1611,65 @@ static int do_execve_common(const char *filename, + if (retval < 0) + goto out; + ++#ifdef CONFIG_GRKERNSEC ++ old_acl = current->acl; ++ memcpy(old_rlim, current->signal->rlim, sizeof(old_rlim)); ++ old_exec_file = current->exec_file; ++ get_file(file); ++ current->exec_file = file; ++#endif ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ /* limit suid stack to 8MB ++ we saved the old limits above and will restore them if this exec fails ++ */ ++ if (((bprm->cred->euid != current_euid()) || (bprm->cred->egid != current_egid())) && ++ (old_rlim[RLIMIT_STACK].rlim_cur > (8 * 1024 * 1024))) ++ current->signal->rlim[RLIMIT_STACK].rlim_cur = 8 * 1024 * 1024; ++#endif ++ ++ if (!gr_tpe_allow(file)) { ++ retval = -EACCES; ++ goto out_fail; ++ } ++ ++ if (gr_check_crash_exec(file)) { ++ retval = -EACCES; ++ goto out_fail; ++ } ++ ++ retval = gr_set_proc_label(file->f_dentry, file->f_vfsmnt, ++ bprm->unsafe); ++ if (retval < 0) ++ goto out_fail; ++ + retval = copy_strings_kernel(1, &bprm->filename, bprm); + if (retval < 0) +- goto out; ++ goto out_fail; + + bprm->exec = bprm->p; + retval = copy_strings(bprm->envc, envp, bprm); + if (retval < 0) +- goto out; ++ goto out_fail; + + retval = copy_strings(bprm->argc, argv, bprm); + if (retval < 0) +- goto out; ++ goto out_fail; ++ ++ gr_log_chroot_exec(file->f_dentry, file->f_vfsmnt); ++ ++ gr_handle_exec_args(bprm, argv); + + retval = search_binary_handler(bprm,regs); + if (retval < 0) +- goto out; ++ goto out_fail; ++#ifdef CONFIG_GRKERNSEC ++ if (old_exec_file) ++ fput(old_exec_file); ++#endif + + /* execve succeeded */ ++ ++ increment_exec_counter(); + current->fs->in_exec = 0; + current->in_execve = 0; + acct_update_integrals(current); +@@ -1554,6 +1678,14 @@ static int do_execve_common(const char *filename, + put_files_struct(displaced); + return retval; + ++out_fail: ++#ifdef CONFIG_GRKERNSEC ++ current->acl = old_acl; ++ memcpy(current->signal->rlim, old_rlim, sizeof(old_rlim)); ++ fput(current->exec_file); ++ current->exec_file = old_exec_file; ++#endif ++ + out: + if (bprm->mm) { + acct_arg_size(bprm, 0); +@@ -1627,7 +1759,7 @@ static int expand_corename(struct core_name *cn) + { + char *old_corename = cn->corename; + +- cn->size = CORENAME_MAX_SIZE * atomic_inc_return(&call_count); ++ cn->size = CORENAME_MAX_SIZE * atomic_inc_return_unchecked(&call_count); + cn->corename = krealloc(old_corename, cn->size, GFP_KERNEL); + + if (!cn->corename) { +@@ -1724,7 +1856,7 @@ static int format_corename(struct core_name *cn, long signr) + int pid_in_pattern = 0; + int err = 0; + +- cn->size = CORENAME_MAX_SIZE * atomic_read(&call_count); ++ cn->size = CORENAME_MAX_SIZE * atomic_read_unchecked(&call_count); + cn->corename = kmalloc(cn->size, GFP_KERNEL); + cn->used = 0; + +@@ -1821,6 +1953,228 @@ out: + return ispipe; + } + ++int pax_check_flags(unsigned long *flags) ++{ ++ int retval = 0; ++ ++#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_SEGMEXEC) ++ if (*flags & MF_PAX_SEGMEXEC) ++ { ++ *flags &= ~MF_PAX_SEGMEXEC; ++ retval = -EINVAL; ++ } ++#endif ++ ++ if ((*flags & MF_PAX_PAGEEXEC) ++ ++#ifdef CONFIG_PAX_PAGEEXEC ++ && (*flags & MF_PAX_SEGMEXEC) ++#endif ++ ++ ) ++ { ++ *flags &= ~MF_PAX_PAGEEXEC; ++ retval = -EINVAL; ++ } ++ ++ if ((*flags & MF_PAX_MPROTECT) ++ ++#ifdef CONFIG_PAX_MPROTECT ++ && !(*flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) ++#endif ++ ++ ) ++ { ++ *flags &= ~MF_PAX_MPROTECT; ++ retval = -EINVAL; ++ } ++ ++ if ((*flags & MF_PAX_EMUTRAMP) ++ ++#ifdef CONFIG_PAX_EMUTRAMP ++ && !(*flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) ++#endif ++ ++ ) ++ { ++ *flags &= ~MF_PAX_EMUTRAMP; ++ retval = -EINVAL; ++ } ++ ++ return retval; ++} ++ ++EXPORT_SYMBOL(pax_check_flags); ++ ++#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) ++void pax_report_fault(struct pt_regs *regs, void *pc, void *sp) ++{ ++ struct task_struct *tsk = current; ++ struct mm_struct *mm = current->mm; ++ char *buffer_exec = (char *)__get_free_page(GFP_KERNEL); ++ char *buffer_fault = (char *)__get_free_page(GFP_KERNEL); ++ char *path_exec = NULL; ++ char *path_fault = NULL; ++ unsigned long start = 0UL, end = 0UL, offset = 0UL; ++ ++ if (buffer_exec && buffer_fault) { ++ struct vm_area_struct *vma, *vma_exec = NULL, *vma_fault = NULL; ++ ++ down_read(&mm->mmap_sem); ++ vma = mm->mmap; ++ while (vma && (!vma_exec || !vma_fault)) { ++ if ((vma->vm_flags & VM_EXECUTABLE) && vma->vm_file) ++ vma_exec = vma; ++ if (vma->vm_start <= (unsigned long)pc && (unsigned long)pc < vma->vm_end) ++ vma_fault = vma; ++ vma = vma->vm_next; ++ } ++ if (vma_exec) { ++ path_exec = d_path(&vma_exec->vm_file->f_path, buffer_exec, PAGE_SIZE); ++ if (IS_ERR(path_exec)) ++ path_exec = "<path too long>"; ++ else { ++ path_exec = mangle_path(buffer_exec, path_exec, "\t\n\\"); ++ if (path_exec) { ++ *path_exec = 0; ++ path_exec = buffer_exec; ++ } else ++ path_exec = "<path too long>"; ++ } ++ } ++ if (vma_fault) { ++ start = vma_fault->vm_start; ++ end = vma_fault->vm_end; ++ offset = vma_fault->vm_pgoff << PAGE_SHIFT; ++ if (vma_fault->vm_file) { ++ path_fault = d_path(&vma_fault->vm_file->f_path, buffer_fault, PAGE_SIZE); ++ if (IS_ERR(path_fault)) ++ path_fault = "<path too long>"; ++ else { ++ path_fault = mangle_path(buffer_fault, path_fault, "\t\n\\"); ++ if (path_fault) { ++ *path_fault = 0; ++ path_fault = buffer_fault; ++ } else ++ path_fault = "<path too long>"; ++ } ++ } else ++ path_fault = "<anonymous mapping>"; ++ } ++ up_read(&mm->mmap_sem); ++ } ++ if (tsk->signal->curr_ip) ++ printk(KERN_ERR "PAX: From %pI4: execution attempt in: %s, %08lx-%08lx %08lx\n", &tsk->signal->curr_ip, path_fault, start, end, offset); ++ else ++ printk(KERN_ERR "PAX: execution attempt in: %s, %08lx-%08lx %08lx\n", path_fault, start, end, offset); ++ printk(KERN_ERR "PAX: terminating task: %s(%s):%d, uid/euid: %u/%u, " ++ "PC: %p, SP: %p\n", path_exec, tsk->comm, task_pid_nr(tsk), ++ task_uid(tsk), task_euid(tsk), pc, sp); ++ free_page((unsigned long)buffer_exec); ++ free_page((unsigned long)buffer_fault); ++ pax_report_insns(regs, pc, sp); ++ do_coredump(SIGKILL, SIGKILL, regs); ++} ++#endif ++ ++#ifdef CONFIG_PAX_REFCOUNT ++void pax_report_refcount_overflow(struct pt_regs *regs) ++{ ++ if (current->signal->curr_ip) ++ printk(KERN_ERR "PAX: From %pI4: refcount overflow detected in: %s:%d, uid/euid: %u/%u\n", ++ ¤t->signal->curr_ip, current->comm, task_pid_nr(current), current_uid(), current_euid()); ++ else ++ printk(KERN_ERR "PAX: refcount overflow detected in: %s:%d, uid/euid: %u/%u\n", ++ current->comm, task_pid_nr(current), current_uid(), current_euid()); ++ print_symbol(KERN_ERR "PAX: refcount overflow occured at: %s\n", instruction_pointer(regs)); ++ show_regs(regs); ++ force_sig_info(SIGKILL, SEND_SIG_FORCED, current); ++} ++#endif ++ ++#ifdef CONFIG_PAX_USERCOPY ++/* 0: not at all, 1: fully, 2: fully inside frame, -1: partially (implies an error) */ ++int object_is_on_stack(const void *obj, unsigned long len) ++{ ++ const void * const stack = task_stack_page(current); ++ const void * const stackend = stack + THREAD_SIZE; ++ ++#if defined(CONFIG_FRAME_POINTER) && defined(CONFIG_X86) ++ const void *frame = NULL; ++ const void *oldframe; ++#endif ++ ++ if (obj + len < obj) ++ return -1; ++ ++ if (obj + len <= stack || stackend <= obj) ++ return 0; ++ ++ if (obj < stack || stackend < obj + len) ++ return -1; ++ ++#if defined(CONFIG_FRAME_POINTER) && defined(CONFIG_X86) ++ oldframe = __builtin_frame_address(1); ++ if (oldframe) ++ frame = __builtin_frame_address(2); ++ /* ++ low ----------------------------------------------> high ++ [saved bp][saved ip][args][local vars][saved bp][saved ip] ++ ^----------------^ ++ allow copies only within here ++ */ ++ while (stack <= frame && frame < stackend) { ++ /* if obj + len extends past the last frame, this ++ check won't pass and the next frame will be 0, ++ causing us to bail out and correctly report ++ the copy as invalid ++ */ ++ if (obj + len <= frame) ++ return obj >= oldframe + 2 * sizeof(void *) ? 2 : -1; ++ oldframe = frame; ++ frame = *(const void * const *)frame; ++ } ++ return -1; ++#else ++ return 1; ++#endif ++} ++ ++__noreturn void pax_report_usercopy(const void *ptr, unsigned long len, bool to, const char *type) ++{ ++ if (current->signal->curr_ip) ++ printk(KERN_ERR "PAX: From %pI4: kernel memory %s attempt detected %s %p (%s) (%lu bytes)\n", ++ ¤t->signal->curr_ip, to ? "leak" : "overwrite", to ? "from" : "to", ptr, type ? : "unknown", len); ++ else ++ printk(KERN_ERR "PAX: kernel memory %s attempt detected %s %p (%s) (%lu bytes)\n", ++ to ? "leak" : "overwrite", to ? "from" : "to", ptr, type ? : "unknown", len); ++ dump_stack(); ++ gr_handle_kernel_exploit(); ++ do_group_exit(SIGKILL); ++} ++#endif ++ ++#ifdef CONFIG_PAX_MEMORY_STACKLEAK ++void pax_track_stack(void) ++{ ++ unsigned long sp = (unsigned long)&sp; ++ if (sp < current_thread_info()->lowest_stack && ++ sp > (unsigned long)task_stack_page(current)) ++ current_thread_info()->lowest_stack = sp; ++} ++EXPORT_SYMBOL(pax_track_stack); ++#endif ++ ++#ifdef CONFIG_PAX_SIZE_OVERFLOW ++void report_size_overflow(const char *file, unsigned int line, const char *func) ++{ ++ printk(KERN_ERR "PAX: size overflow detected in function %s %s:%u\n", func, file, line); ++ dump_stack(); ++ do_group_exit(SIGKILL); ++} ++EXPORT_SYMBOL(report_size_overflow); ++#endif ++ + static int zap_process(struct task_struct *start, int exit_code) + { + struct task_struct *t; +@@ -2018,17 +2372,17 @@ static void wait_for_dump_helpers(struct file *file) + pipe = file->f_path.dentry->d_inode->i_pipe; + + pipe_lock(pipe); +- pipe->readers++; +- pipe->writers--; ++ atomic_inc(&pipe->readers); ++ atomic_dec(&pipe->writers); + +- while ((pipe->readers > 1) && (!signal_pending(current))) { ++ while ((atomic_read(&pipe->readers) > 1) && (!signal_pending(current))) { + wake_up_interruptible_sync(&pipe->wait); + kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN); + pipe_wait(pipe); + } + +- pipe->readers--; +- pipe->writers++; ++ atomic_dec(&pipe->readers); ++ atomic_inc(&pipe->writers); + pipe_unlock(pipe); + + } +@@ -2089,7 +2443,7 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs) + int retval = 0; + int flag = 0; + int ispipe; +- static atomic_t core_dump_count = ATOMIC_INIT(0); ++ static atomic_unchecked_t core_dump_count = ATOMIC_INIT(0); + struct coredump_params cprm = { + .signr = signr, + .regs = regs, +@@ -2104,6 +2458,9 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs) + + audit_core_dumps(signr); + ++ if (signr == SIGSEGV || signr == SIGBUS || signr == SIGKILL || signr == SIGILL) ++ gr_handle_brute_attach(current, cprm.mm_flags); ++ + binfmt = mm->binfmt; + if (!binfmt || !binfmt->core_dump) + goto fail; +@@ -2171,7 +2528,7 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs) + } + cprm.limit = RLIM_INFINITY; + +- dump_count = atomic_inc_return(&core_dump_count); ++ dump_count = atomic_inc_return_unchecked(&core_dump_count); + if (core_pipe_limit && (core_pipe_limit < dump_count)) { + printk(KERN_WARNING "Pid %d(%s) over core_pipe_limit\n", + task_tgid_vnr(current), current->comm); +@@ -2198,6 +2555,8 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs) + } else { + struct inode *inode; + ++ gr_learn_resource(current, RLIMIT_CORE, binfmt->min_coredump, 1); ++ + if (cprm.limit < binfmt->min_coredump) + goto fail_unlock; + +@@ -2241,7 +2600,7 @@ close_fail: + filp_close(cprm.file, NULL); + fail_dropcount: + if (ispipe) +- atomic_dec(&core_dump_count); ++ atomic_dec_unchecked(&core_dump_count); + fail_unlock: + kfree(cn.corename); + fail_corename: +@@ -2260,7 +2619,7 @@ fail: + */ + int dump_write(struct file *file, const void *addr, int nr) + { +- return access_ok(VERIFY_READ, addr, nr) && file->f_op->write(file, addr, nr, &file->f_pos) == nr; ++ return access_ok(VERIFY_READ, addr, nr) && file->f_op->write(file, (const char __force_user *)addr, nr, &file->f_pos) == nr; + } + EXPORT_SYMBOL(dump_write); + +diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c +index a8cbe1b..fed04cb 100644 +--- a/fs/ext2/balloc.c ++++ b/fs/ext2/balloc.c +@@ -1192,7 +1192,7 @@ static int ext2_has_free_blocks(struct ext2_sb_info *sbi) + + free_blocks = percpu_counter_read_positive(&sbi->s_freeblocks_counter); + root_blocks = le32_to_cpu(sbi->s_es->s_r_blocks_count); +- if (free_blocks < root_blocks + 1 && !capable(CAP_SYS_RESOURCE) && ++ if (free_blocks < root_blocks + 1 && !capable_nolog(CAP_SYS_RESOURCE) && + sbi->s_resuid != current_fsuid() && + (sbi->s_resgid == 0 || !in_group_p (sbi->s_resgid))) { + return 0; +diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c +index baac1b1..1499b62 100644 +--- a/fs/ext3/balloc.c ++++ b/fs/ext3/balloc.c +@@ -1438,9 +1438,10 @@ static int ext3_has_free_blocks(struct ext3_sb_info *sbi, int use_reservation) + + free_blocks = percpu_counter_read_positive(&sbi->s_freeblocks_counter); + root_blocks = le32_to_cpu(sbi->s_es->s_r_blocks_count); +- if (free_blocks < root_blocks + 1 && !capable(CAP_SYS_RESOURCE) && ++ if (free_blocks < root_blocks + 1 && + !use_reservation && sbi->s_resuid != current_fsuid() && +- (sbi->s_resgid == 0 || !in_group_p (sbi->s_resgid))) { ++ (sbi->s_resgid == 0 || !in_group_p (sbi->s_resgid)) && ++ !capable_nolog(CAP_SYS_RESOURCE)) { + return 0; + } + return 1; +diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c +index 8da837b..ed3835b 100644 +--- a/fs/ext4/balloc.c ++++ b/fs/ext4/balloc.c +@@ -463,8 +463,8 @@ static int ext4_has_free_clusters(struct ext4_sb_info *sbi, + /* Hm, nope. Are (enough) root reserved clusters available? */ + if (sbi->s_resuid == current_fsuid() || + ((sbi->s_resgid != 0) && in_group_p(sbi->s_resgid)) || +- capable(CAP_SYS_RESOURCE) || +- (flags & EXT4_MB_USE_ROOT_BLOCKS)) { ++ (flags & EXT4_MB_USE_ROOT_BLOCKS) || ++ capable_nolog(CAP_SYS_RESOURCE)) { + + if (free_clusters >= (nclusters + dirty_clusters)) + return 1; +diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h +index 0e01e90..ae2bd5e 100644 +--- a/fs/ext4/ext4.h ++++ b/fs/ext4/ext4.h +@@ -1225,19 +1225,19 @@ struct ext4_sb_info { + unsigned long s_mb_last_start; + + /* stats for buddy allocator */ +- atomic_t s_bal_reqs; /* number of reqs with len > 1 */ +- atomic_t s_bal_success; /* we found long enough chunks */ +- atomic_t s_bal_allocated; /* in blocks */ +- atomic_t s_bal_ex_scanned; /* total extents scanned */ +- atomic_t s_bal_goals; /* goal hits */ +- atomic_t s_bal_breaks; /* too long searches */ +- atomic_t s_bal_2orders; /* 2^order hits */ ++ atomic_unchecked_t s_bal_reqs; /* number of reqs with len > 1 */ ++ atomic_unchecked_t s_bal_success; /* we found long enough chunks */ ++ atomic_unchecked_t s_bal_allocated; /* in blocks */ ++ atomic_unchecked_t s_bal_ex_scanned; /* total extents scanned */ ++ atomic_unchecked_t s_bal_goals; /* goal hits */ ++ atomic_unchecked_t s_bal_breaks; /* too long searches */ ++ atomic_unchecked_t s_bal_2orders; /* 2^order hits */ + spinlock_t s_bal_lock; + unsigned long s_mb_buddies_generated; + unsigned long long s_mb_generation_time; +- atomic_t s_mb_lost_chunks; +- atomic_t s_mb_preallocated; +- atomic_t s_mb_discarded; ++ atomic_unchecked_t s_mb_lost_chunks; ++ atomic_unchecked_t s_mb_preallocated; ++ atomic_unchecked_t s_mb_discarded; + atomic_t s_lock_busy; + + /* locality groups */ +diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c +index 6b0a57e..1955a44 100644 +--- a/fs/ext4/mballoc.c ++++ b/fs/ext4/mballoc.c +@@ -1747,7 +1747,7 @@ void ext4_mb_simple_scan_group(struct ext4_allocation_context *ac, + BUG_ON(ac->ac_b_ex.fe_len != ac->ac_g_ex.fe_len); + + if (EXT4_SB(sb)->s_mb_stats) +- atomic_inc(&EXT4_SB(sb)->s_bal_2orders); ++ atomic_inc_unchecked(&EXT4_SB(sb)->s_bal_2orders); + + break; + } +@@ -2041,7 +2041,7 @@ repeat: + ac->ac_status = AC_STATUS_CONTINUE; + ac->ac_flags |= EXT4_MB_HINT_FIRST; + cr = 3; +- atomic_inc(&sbi->s_mb_lost_chunks); ++ atomic_inc_unchecked(&sbi->s_mb_lost_chunks); + goto repeat; + } + } +@@ -2545,25 +2545,25 @@ int ext4_mb_release(struct super_block *sb) + if (sbi->s_mb_stats) { + ext4_msg(sb, KERN_INFO, + "mballoc: %u blocks %u reqs (%u success)", +- atomic_read(&sbi->s_bal_allocated), +- atomic_read(&sbi->s_bal_reqs), +- atomic_read(&sbi->s_bal_success)); ++ atomic_read_unchecked(&sbi->s_bal_allocated), ++ atomic_read_unchecked(&sbi->s_bal_reqs), ++ atomic_read_unchecked(&sbi->s_bal_success)); + ext4_msg(sb, KERN_INFO, + "mballoc: %u extents scanned, %u goal hits, " + "%u 2^N hits, %u breaks, %u lost", +- atomic_read(&sbi->s_bal_ex_scanned), +- atomic_read(&sbi->s_bal_goals), +- atomic_read(&sbi->s_bal_2orders), +- atomic_read(&sbi->s_bal_breaks), +- atomic_read(&sbi->s_mb_lost_chunks)); ++ atomic_read_unchecked(&sbi->s_bal_ex_scanned), ++ atomic_read_unchecked(&sbi->s_bal_goals), ++ atomic_read_unchecked(&sbi->s_bal_2orders), ++ atomic_read_unchecked(&sbi->s_bal_breaks), ++ atomic_read_unchecked(&sbi->s_mb_lost_chunks)); + ext4_msg(sb, KERN_INFO, + "mballoc: %lu generated and it took %Lu", + sbi->s_mb_buddies_generated, + sbi->s_mb_generation_time); + ext4_msg(sb, KERN_INFO, + "mballoc: %u preallocated, %u discarded", +- atomic_read(&sbi->s_mb_preallocated), +- atomic_read(&sbi->s_mb_discarded)); ++ atomic_read_unchecked(&sbi->s_mb_preallocated), ++ atomic_read_unchecked(&sbi->s_mb_discarded)); + } + + free_percpu(sbi->s_locality_groups); +@@ -3045,16 +3045,16 @@ static void ext4_mb_collect_stats(struct ext4_allocation_context *ac) + struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); + + if (sbi->s_mb_stats && ac->ac_g_ex.fe_len > 1) { +- atomic_inc(&sbi->s_bal_reqs); +- atomic_add(ac->ac_b_ex.fe_len, &sbi->s_bal_allocated); ++ atomic_inc_unchecked(&sbi->s_bal_reqs); ++ atomic_add_unchecked(ac->ac_b_ex.fe_len, &sbi->s_bal_allocated); + if (ac->ac_b_ex.fe_len >= ac->ac_o_ex.fe_len) +- atomic_inc(&sbi->s_bal_success); +- atomic_add(ac->ac_found, &sbi->s_bal_ex_scanned); ++ atomic_inc_unchecked(&sbi->s_bal_success); ++ atomic_add_unchecked(ac->ac_found, &sbi->s_bal_ex_scanned); + if (ac->ac_g_ex.fe_start == ac->ac_b_ex.fe_start && + ac->ac_g_ex.fe_group == ac->ac_b_ex.fe_group) +- atomic_inc(&sbi->s_bal_goals); ++ atomic_inc_unchecked(&sbi->s_bal_goals); + if (ac->ac_found > sbi->s_mb_max_to_scan) +- atomic_inc(&sbi->s_bal_breaks); ++ atomic_inc_unchecked(&sbi->s_bal_breaks); + } + + if (ac->ac_op == EXT4_MB_HISTORY_ALLOC) +@@ -3458,7 +3458,7 @@ ext4_mb_new_inode_pa(struct ext4_allocation_context *ac) + trace_ext4_mb_new_inode_pa(ac, pa); + + ext4_mb_use_inode_pa(ac, pa); +- atomic_add(pa->pa_free, &sbi->s_mb_preallocated); ++ atomic_add_unchecked(pa->pa_free, &sbi->s_mb_preallocated); + + ei = EXT4_I(ac->ac_inode); + grp = ext4_get_group_info(sb, ac->ac_b_ex.fe_group); +@@ -3518,7 +3518,7 @@ ext4_mb_new_group_pa(struct ext4_allocation_context *ac) + trace_ext4_mb_new_group_pa(ac, pa); + + ext4_mb_use_group_pa(ac, pa); +- atomic_add(pa->pa_free, &EXT4_SB(sb)->s_mb_preallocated); ++ atomic_add_unchecked(pa->pa_free, &EXT4_SB(sb)->s_mb_preallocated); + + grp = ext4_get_group_info(sb, ac->ac_b_ex.fe_group); + lg = ac->ac_lg; +@@ -3607,7 +3607,7 @@ ext4_mb_release_inode_pa(struct ext4_buddy *e4b, struct buffer_head *bitmap_bh, + * from the bitmap and continue. + */ + } +- atomic_add(free, &sbi->s_mb_discarded); ++ atomic_add_unchecked(free, &sbi->s_mb_discarded); + + return err; + } +@@ -3625,7 +3625,7 @@ ext4_mb_release_group_pa(struct ext4_buddy *e4b, + ext4_get_group_no_and_offset(sb, pa->pa_pstart, &group, &bit); + BUG_ON(group != e4b->bd_group && pa->pa_len != 0); + mb_free_blocks(pa->pa_inode, e4b, bit, pa->pa_len); +- atomic_add(pa->pa_len, &EXT4_SB(sb)->s_mb_discarded); ++ atomic_add_unchecked(pa->pa_len, &EXT4_SB(sb)->s_mb_discarded); + trace_ext4_mballoc_discard(sb, NULL, group, bit, pa->pa_len); + + return 0; +diff --git a/fs/fcntl.c b/fs/fcntl.c +index 75e7c1f..1eb3e4d 100644 +--- a/fs/fcntl.c ++++ b/fs/fcntl.c +@@ -224,6 +224,11 @@ int __f_setown(struct file *filp, struct pid *pid, enum pid_type type, + if (err) + return err; + ++ if (gr_handle_chroot_fowner(pid, type)) ++ return -ENOENT; ++ if (gr_check_protected_task_fowner(pid, type)) ++ return -EACCES; ++ + f_modown(filp, pid, type, force); + return 0; + } +@@ -266,7 +271,7 @@ pid_t f_getown(struct file *filp) + + static int f_setown_ex(struct file *filp, unsigned long arg) + { +- struct f_owner_ex * __user owner_p = (void * __user)arg; ++ struct f_owner_ex __user *owner_p = (void __user *)arg; + struct f_owner_ex owner; + struct pid *pid; + int type; +@@ -306,7 +311,7 @@ static int f_setown_ex(struct file *filp, unsigned long arg) + + static int f_getown_ex(struct file *filp, unsigned long arg) + { +- struct f_owner_ex * __user owner_p = (void * __user)arg; ++ struct f_owner_ex __user *owner_p = (void __user *)arg; + struct f_owner_ex owner; + int ret = 0; + +@@ -348,6 +353,7 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg, + switch (cmd) { + case F_DUPFD: + case F_DUPFD_CLOEXEC: ++ gr_learn_resource(current, RLIMIT_NOFILE, arg, 0); + if (arg >= rlimit(RLIMIT_NOFILE)) + break; + err = alloc_fd(arg, cmd == F_DUPFD_CLOEXEC ? O_CLOEXEC : 0); +diff --git a/fs/fifo.c b/fs/fifo.c +index b1a524d..4ee270e 100644 +--- a/fs/fifo.c ++++ b/fs/fifo.c +@@ -58,10 +58,10 @@ static int fifo_open(struct inode *inode, struct file *filp) + */ + filp->f_op = &read_pipefifo_fops; + pipe->r_counter++; +- if (pipe->readers++ == 0) ++ if (atomic_inc_return(&pipe->readers) == 1) + wake_up_partner(inode); + +- if (!pipe->writers) { ++ if (!atomic_read(&pipe->writers)) { + if ((filp->f_flags & O_NONBLOCK)) { + /* suppress POLLHUP until we have + * seen a writer */ +@@ -81,15 +81,15 @@ static int fifo_open(struct inode *inode, struct file *filp) + * errno=ENXIO when there is no process reading the FIFO. + */ + ret = -ENXIO; +- if ((filp->f_flags & O_NONBLOCK) && !pipe->readers) ++ if ((filp->f_flags & O_NONBLOCK) && !atomic_read(&pipe->readers)) + goto err; + + filp->f_op = &write_pipefifo_fops; + pipe->w_counter++; +- if (!pipe->writers++) ++ if (atomic_inc_return(&pipe->writers) == 1) + wake_up_partner(inode); + +- if (!pipe->readers) { ++ if (!atomic_read(&pipe->readers)) { + wait_for_partner(inode, &pipe->r_counter); + if (signal_pending(current)) + goto err_wr; +@@ -105,11 +105,11 @@ static int fifo_open(struct inode *inode, struct file *filp) + */ + filp->f_op = &rdwr_pipefifo_fops; + +- pipe->readers++; +- pipe->writers++; ++ atomic_inc(&pipe->readers); ++ atomic_inc(&pipe->writers); + pipe->r_counter++; + pipe->w_counter++; +- if (pipe->readers == 1 || pipe->writers == 1) ++ if (atomic_read(&pipe->readers) == 1 || atomic_read(&pipe->writers) == 1) + wake_up_partner(inode); + break; + +@@ -123,19 +123,19 @@ static int fifo_open(struct inode *inode, struct file *filp) + return 0; + + err_rd: +- if (!--pipe->readers) ++ if (atomic_dec_and_test(&pipe->readers)) + wake_up_interruptible(&pipe->wait); + ret = -ERESTARTSYS; + goto err; + + err_wr: +- if (!--pipe->writers) ++ if (atomic_dec_and_test(&pipe->writers)) + wake_up_interruptible(&pipe->wait); + ret = -ERESTARTSYS; + goto err; + + err: +- if (!pipe->readers && !pipe->writers) ++ if (!atomic_read(&pipe->readers) && !atomic_read(&pipe->writers)) + free_pipe_info(inode); + + err_nocleanup: +diff --git a/fs/file.c b/fs/file.c +index ba3f605..fade102 100644 +--- a/fs/file.c ++++ b/fs/file.c +@@ -15,6 +15,7 @@ + #include <linux/slab.h> + #include <linux/vmalloc.h> + #include <linux/file.h> ++#include <linux/security.h> + #include <linux/fdtable.h> + #include <linux/bitops.h> + #include <linux/interrupt.h> +@@ -255,6 +256,7 @@ int expand_files(struct files_struct *files, int nr) + * N.B. For clone tasks sharing a files structure, this test + * will limit the total number of files that can be opened. + */ ++ gr_learn_resource(current, RLIMIT_NOFILE, nr, 0); + if (nr >= rlimit(RLIMIT_NOFILE)) + return -EMFILE; + +diff --git a/fs/filesystems.c b/fs/filesystems.c +index 96f2428..f5eeb8e 100644 +--- a/fs/filesystems.c ++++ b/fs/filesystems.c +@@ -273,7 +273,12 @@ struct file_system_type *get_fs_type(const char *name) + int len = dot ? dot - name : strlen(name); + + fs = __get_fs_type(name, len); ++ ++#ifdef CONFIG_GRKERNSEC_MODHARDEN ++ if (!fs && (___request_module(true, "grsec_modharden_fs", "%.*s", len, name) == 0)) ++#else + if (!fs && (request_module("%.*s", len, name) == 0)) ++#endif + fs = __get_fs_type(name, len); + + if (dot && fs && !(fs->fs_flags & FS_HAS_SUBTYPE)) { +diff --git a/fs/fs_struct.c b/fs/fs_struct.c +index e159e68..e7d2a6f 100644 +--- a/fs/fs_struct.c ++++ b/fs/fs_struct.c +@@ -4,6 +4,7 @@ + #include <linux/path.h> + #include <linux/slab.h> + #include <linux/fs_struct.h> ++#include <linux/grsecurity.h> + #include "internal.h" + + static inline void path_get_longterm(struct path *path) +@@ -31,6 +32,7 @@ void set_fs_root(struct fs_struct *fs, struct path *path) + write_seqcount_begin(&fs->seq); + old_root = fs->root; + fs->root = *path; ++ gr_set_chroot_entries(current, path); + write_seqcount_end(&fs->seq); + spin_unlock(&fs->lock); + if (old_root.dentry) +@@ -65,6 +67,17 @@ static inline int replace_path(struct path *p, const struct path *old, const str + return 1; + } + ++static inline int replace_root_path(struct task_struct *task, struct path *p, const struct path *old, struct path *new) ++{ ++ if (likely(p->dentry != old->dentry || p->mnt != old->mnt)) ++ return 0; ++ *p = *new; ++ ++ gr_set_chroot_entries(task, new); ++ ++ return 1; ++} ++ + void chroot_fs_refs(struct path *old_root, struct path *new_root) + { + struct task_struct *g, *p; +@@ -79,7 +92,7 @@ void chroot_fs_refs(struct path *old_root, struct path *new_root) + int hits = 0; + spin_lock(&fs->lock); + write_seqcount_begin(&fs->seq); +- hits += replace_path(&fs->root, old_root, new_root); ++ hits += replace_root_path(p, &fs->root, old_root, new_root); + hits += replace_path(&fs->pwd, old_root, new_root); + write_seqcount_end(&fs->seq); + while (hits--) { +@@ -111,7 +124,8 @@ void exit_fs(struct task_struct *tsk) + task_lock(tsk); + spin_lock(&fs->lock); + tsk->fs = NULL; +- kill = !--fs->users; ++ gr_clear_chroot_entries(tsk); ++ kill = !atomic_dec_return(&fs->users); + spin_unlock(&fs->lock); + task_unlock(tsk); + if (kill) +@@ -124,7 +138,7 @@ struct fs_struct *copy_fs_struct(struct fs_struct *old) + struct fs_struct *fs = kmem_cache_alloc(fs_cachep, GFP_KERNEL); + /* We don't need to lock fs - think why ;-) */ + if (fs) { +- fs->users = 1; ++ atomic_set(&fs->users, 1); + fs->in_exec = 0; + spin_lock_init(&fs->lock); + seqcount_init(&fs->seq); +@@ -133,6 +147,9 @@ struct fs_struct *copy_fs_struct(struct fs_struct *old) + spin_lock(&old->lock); + fs->root = old->root; + path_get_longterm(&fs->root); ++ /* instead of calling gr_set_chroot_entries here, ++ we call it from every caller of this function ++ */ + fs->pwd = old->pwd; + path_get_longterm(&fs->pwd); + spin_unlock(&old->lock); +@@ -151,8 +168,9 @@ int unshare_fs_struct(void) + + task_lock(current); + spin_lock(&fs->lock); +- kill = !--fs->users; ++ kill = !atomic_dec_return(&fs->users); + current->fs = new_fs; ++ gr_set_chroot_entries(current, &new_fs->root); + spin_unlock(&fs->lock); + task_unlock(current); + +@@ -165,13 +183,13 @@ EXPORT_SYMBOL_GPL(unshare_fs_struct); + + int current_umask(void) + { +- return current->fs->umask; ++ return current->fs->umask | gr_acl_umask(); + } + EXPORT_SYMBOL(current_umask); + + /* to be mentioned only in INIT_TASK */ + struct fs_struct init_fs = { +- .users = 1, ++ .users = ATOMIC_INIT(1), + .lock = __SPIN_LOCK_UNLOCKED(init_fs.lock), + .seq = SEQCNT_ZERO, + .umask = 0022, +@@ -187,12 +205,13 @@ void daemonize_fs_struct(void) + task_lock(current); + + spin_lock(&init_fs.lock); +- init_fs.users++; ++ atomic_inc(&init_fs.users); + spin_unlock(&init_fs.lock); + + spin_lock(&fs->lock); + current->fs = &init_fs; +- kill = !--fs->users; ++ gr_set_chroot_entries(current, ¤t->fs->root); ++ kill = !atomic_dec_return(&fs->users); + spin_unlock(&fs->lock); + + task_unlock(current); +diff --git a/fs/fscache/cookie.c b/fs/fscache/cookie.c +index 9905350..02eaec4 100644 +--- a/fs/fscache/cookie.c ++++ b/fs/fscache/cookie.c +@@ -68,11 +68,11 @@ struct fscache_cookie *__fscache_acquire_cookie( + parent ? (char *) parent->def->name : "<no-parent>", + def->name, netfs_data); + +- fscache_stat(&fscache_n_acquires); ++ fscache_stat_unchecked(&fscache_n_acquires); + + /* if there's no parent cookie, then we don't create one here either */ + if (!parent) { +- fscache_stat(&fscache_n_acquires_null); ++ fscache_stat_unchecked(&fscache_n_acquires_null); + _leave(" [no parent]"); + return NULL; + } +@@ -87,7 +87,7 @@ struct fscache_cookie *__fscache_acquire_cookie( + /* allocate and initialise a cookie */ + cookie = kmem_cache_alloc(fscache_cookie_jar, GFP_KERNEL); + if (!cookie) { +- fscache_stat(&fscache_n_acquires_oom); ++ fscache_stat_unchecked(&fscache_n_acquires_oom); + _leave(" [ENOMEM]"); + return NULL; + } +@@ -109,13 +109,13 @@ struct fscache_cookie *__fscache_acquire_cookie( + + switch (cookie->def->type) { + case FSCACHE_COOKIE_TYPE_INDEX: +- fscache_stat(&fscache_n_cookie_index); ++ fscache_stat_unchecked(&fscache_n_cookie_index); + break; + case FSCACHE_COOKIE_TYPE_DATAFILE: +- fscache_stat(&fscache_n_cookie_data); ++ fscache_stat_unchecked(&fscache_n_cookie_data); + break; + default: +- fscache_stat(&fscache_n_cookie_special); ++ fscache_stat_unchecked(&fscache_n_cookie_special); + break; + } + +@@ -126,13 +126,13 @@ struct fscache_cookie *__fscache_acquire_cookie( + if (fscache_acquire_non_index_cookie(cookie) < 0) { + atomic_dec(&parent->n_children); + __fscache_cookie_put(cookie); +- fscache_stat(&fscache_n_acquires_nobufs); ++ fscache_stat_unchecked(&fscache_n_acquires_nobufs); + _leave(" = NULL"); + return NULL; + } + } + +- fscache_stat(&fscache_n_acquires_ok); ++ fscache_stat_unchecked(&fscache_n_acquires_ok); + _leave(" = %p", cookie); + return cookie; + } +@@ -168,7 +168,7 @@ static int fscache_acquire_non_index_cookie(struct fscache_cookie *cookie) + cache = fscache_select_cache_for_object(cookie->parent); + if (!cache) { + up_read(&fscache_addremove_sem); +- fscache_stat(&fscache_n_acquires_no_cache); ++ fscache_stat_unchecked(&fscache_n_acquires_no_cache); + _leave(" = -ENOMEDIUM [no cache]"); + return -ENOMEDIUM; + } +@@ -256,12 +256,12 @@ static int fscache_alloc_object(struct fscache_cache *cache, + object = cache->ops->alloc_object(cache, cookie); + fscache_stat_d(&fscache_n_cop_alloc_object); + if (IS_ERR(object)) { +- fscache_stat(&fscache_n_object_no_alloc); ++ fscache_stat_unchecked(&fscache_n_object_no_alloc); + ret = PTR_ERR(object); + goto error; + } + +- fscache_stat(&fscache_n_object_alloc); ++ fscache_stat_unchecked(&fscache_n_object_alloc); + + object->debug_id = atomic_inc_return(&fscache_object_debug_id); + +@@ -377,10 +377,10 @@ void __fscache_update_cookie(struct fscache_cookie *cookie) + struct fscache_object *object; + struct hlist_node *_p; + +- fscache_stat(&fscache_n_updates); ++ fscache_stat_unchecked(&fscache_n_updates); + + if (!cookie) { +- fscache_stat(&fscache_n_updates_null); ++ fscache_stat_unchecked(&fscache_n_updates_null); + _leave(" [no cookie]"); + return; + } +@@ -414,12 +414,12 @@ void __fscache_relinquish_cookie(struct fscache_cookie *cookie, int retire) + struct fscache_object *object; + unsigned long event; + +- fscache_stat(&fscache_n_relinquishes); ++ fscache_stat_unchecked(&fscache_n_relinquishes); + if (retire) +- fscache_stat(&fscache_n_relinquishes_retire); ++ fscache_stat_unchecked(&fscache_n_relinquishes_retire); + + if (!cookie) { +- fscache_stat(&fscache_n_relinquishes_null); ++ fscache_stat_unchecked(&fscache_n_relinquishes_null); + _leave(" [no cookie]"); + return; + } +@@ -435,7 +435,7 @@ void __fscache_relinquish_cookie(struct fscache_cookie *cookie, int retire) + + /* wait for the cookie to finish being instantiated (or to fail) */ + if (test_bit(FSCACHE_COOKIE_CREATING, &cookie->flags)) { +- fscache_stat(&fscache_n_relinquishes_waitcrt); ++ fscache_stat_unchecked(&fscache_n_relinquishes_waitcrt); + wait_on_bit(&cookie->flags, FSCACHE_COOKIE_CREATING, + fscache_wait_bit, TASK_UNINTERRUPTIBLE); + } +diff --git a/fs/fscache/internal.h b/fs/fscache/internal.h +index f6aad48..88dcf26 100644 +--- a/fs/fscache/internal.h ++++ b/fs/fscache/internal.h +@@ -144,94 +144,94 @@ extern void fscache_proc_cleanup(void); + extern atomic_t fscache_n_ops_processed[FSCACHE_MAX_THREADS]; + extern atomic_t fscache_n_objs_processed[FSCACHE_MAX_THREADS]; + +-extern atomic_t fscache_n_op_pend; +-extern atomic_t fscache_n_op_run; +-extern atomic_t fscache_n_op_enqueue; +-extern atomic_t fscache_n_op_deferred_release; +-extern atomic_t fscache_n_op_release; +-extern atomic_t fscache_n_op_gc; +-extern atomic_t fscache_n_op_cancelled; +-extern atomic_t fscache_n_op_rejected; ++extern atomic_unchecked_t fscache_n_op_pend; ++extern atomic_unchecked_t fscache_n_op_run; ++extern atomic_unchecked_t fscache_n_op_enqueue; ++extern atomic_unchecked_t fscache_n_op_deferred_release; ++extern atomic_unchecked_t fscache_n_op_release; ++extern atomic_unchecked_t fscache_n_op_gc; ++extern atomic_unchecked_t fscache_n_op_cancelled; ++extern atomic_unchecked_t fscache_n_op_rejected; + +-extern atomic_t fscache_n_attr_changed; +-extern atomic_t fscache_n_attr_changed_ok; +-extern atomic_t fscache_n_attr_changed_nobufs; +-extern atomic_t fscache_n_attr_changed_nomem; +-extern atomic_t fscache_n_attr_changed_calls; ++extern atomic_unchecked_t fscache_n_attr_changed; ++extern atomic_unchecked_t fscache_n_attr_changed_ok; ++extern atomic_unchecked_t fscache_n_attr_changed_nobufs; ++extern atomic_unchecked_t fscache_n_attr_changed_nomem; ++extern atomic_unchecked_t fscache_n_attr_changed_calls; + +-extern atomic_t fscache_n_allocs; +-extern atomic_t fscache_n_allocs_ok; +-extern atomic_t fscache_n_allocs_wait; +-extern atomic_t fscache_n_allocs_nobufs; +-extern atomic_t fscache_n_allocs_intr; +-extern atomic_t fscache_n_allocs_object_dead; +-extern atomic_t fscache_n_alloc_ops; +-extern atomic_t fscache_n_alloc_op_waits; ++extern atomic_unchecked_t fscache_n_allocs; ++extern atomic_unchecked_t fscache_n_allocs_ok; ++extern atomic_unchecked_t fscache_n_allocs_wait; ++extern atomic_unchecked_t fscache_n_allocs_nobufs; ++extern atomic_unchecked_t fscache_n_allocs_intr; ++extern atomic_unchecked_t fscache_n_allocs_object_dead; ++extern atomic_unchecked_t fscache_n_alloc_ops; ++extern atomic_unchecked_t fscache_n_alloc_op_waits; + +-extern atomic_t fscache_n_retrievals; +-extern atomic_t fscache_n_retrievals_ok; +-extern atomic_t fscache_n_retrievals_wait; +-extern atomic_t fscache_n_retrievals_nodata; +-extern atomic_t fscache_n_retrievals_nobufs; +-extern atomic_t fscache_n_retrievals_intr; +-extern atomic_t fscache_n_retrievals_nomem; +-extern atomic_t fscache_n_retrievals_object_dead; +-extern atomic_t fscache_n_retrieval_ops; +-extern atomic_t fscache_n_retrieval_op_waits; ++extern atomic_unchecked_t fscache_n_retrievals; ++extern atomic_unchecked_t fscache_n_retrievals_ok; ++extern atomic_unchecked_t fscache_n_retrievals_wait; ++extern atomic_unchecked_t fscache_n_retrievals_nodata; ++extern atomic_unchecked_t fscache_n_retrievals_nobufs; ++extern atomic_unchecked_t fscache_n_retrievals_intr; ++extern atomic_unchecked_t fscache_n_retrievals_nomem; ++extern atomic_unchecked_t fscache_n_retrievals_object_dead; ++extern atomic_unchecked_t fscache_n_retrieval_ops; ++extern atomic_unchecked_t fscache_n_retrieval_op_waits; + +-extern atomic_t fscache_n_stores; +-extern atomic_t fscache_n_stores_ok; +-extern atomic_t fscache_n_stores_again; +-extern atomic_t fscache_n_stores_nobufs; +-extern atomic_t fscache_n_stores_oom; +-extern atomic_t fscache_n_store_ops; +-extern atomic_t fscache_n_store_calls; +-extern atomic_t fscache_n_store_pages; +-extern atomic_t fscache_n_store_radix_deletes; +-extern atomic_t fscache_n_store_pages_over_limit; ++extern atomic_unchecked_t fscache_n_stores; ++extern atomic_unchecked_t fscache_n_stores_ok; ++extern atomic_unchecked_t fscache_n_stores_again; ++extern atomic_unchecked_t fscache_n_stores_nobufs; ++extern atomic_unchecked_t fscache_n_stores_oom; ++extern atomic_unchecked_t fscache_n_store_ops; ++extern atomic_unchecked_t fscache_n_store_calls; ++extern atomic_unchecked_t fscache_n_store_pages; ++extern atomic_unchecked_t fscache_n_store_radix_deletes; ++extern atomic_unchecked_t fscache_n_store_pages_over_limit; + +-extern atomic_t fscache_n_store_vmscan_not_storing; +-extern atomic_t fscache_n_store_vmscan_gone; +-extern atomic_t fscache_n_store_vmscan_busy; +-extern atomic_t fscache_n_store_vmscan_cancelled; ++extern atomic_unchecked_t fscache_n_store_vmscan_not_storing; ++extern atomic_unchecked_t fscache_n_store_vmscan_gone; ++extern atomic_unchecked_t fscache_n_store_vmscan_busy; ++extern atomic_unchecked_t fscache_n_store_vmscan_cancelled; + +-extern atomic_t fscache_n_marks; +-extern atomic_t fscache_n_uncaches; ++extern atomic_unchecked_t fscache_n_marks; ++extern atomic_unchecked_t fscache_n_uncaches; + +-extern atomic_t fscache_n_acquires; +-extern atomic_t fscache_n_acquires_null; +-extern atomic_t fscache_n_acquires_no_cache; +-extern atomic_t fscache_n_acquires_ok; +-extern atomic_t fscache_n_acquires_nobufs; +-extern atomic_t fscache_n_acquires_oom; ++extern atomic_unchecked_t fscache_n_acquires; ++extern atomic_unchecked_t fscache_n_acquires_null; ++extern atomic_unchecked_t fscache_n_acquires_no_cache; ++extern atomic_unchecked_t fscache_n_acquires_ok; ++extern atomic_unchecked_t fscache_n_acquires_nobufs; ++extern atomic_unchecked_t fscache_n_acquires_oom; + +-extern atomic_t fscache_n_updates; +-extern atomic_t fscache_n_updates_null; +-extern atomic_t fscache_n_updates_run; ++extern atomic_unchecked_t fscache_n_updates; ++extern atomic_unchecked_t fscache_n_updates_null; ++extern atomic_unchecked_t fscache_n_updates_run; + +-extern atomic_t fscache_n_relinquishes; +-extern atomic_t fscache_n_relinquishes_null; +-extern atomic_t fscache_n_relinquishes_waitcrt; +-extern atomic_t fscache_n_relinquishes_retire; ++extern atomic_unchecked_t fscache_n_relinquishes; ++extern atomic_unchecked_t fscache_n_relinquishes_null; ++extern atomic_unchecked_t fscache_n_relinquishes_waitcrt; ++extern atomic_unchecked_t fscache_n_relinquishes_retire; + +-extern atomic_t fscache_n_cookie_index; +-extern atomic_t fscache_n_cookie_data; +-extern atomic_t fscache_n_cookie_special; ++extern atomic_unchecked_t fscache_n_cookie_index; ++extern atomic_unchecked_t fscache_n_cookie_data; ++extern atomic_unchecked_t fscache_n_cookie_special; + +-extern atomic_t fscache_n_object_alloc; +-extern atomic_t fscache_n_object_no_alloc; +-extern atomic_t fscache_n_object_lookups; +-extern atomic_t fscache_n_object_lookups_negative; +-extern atomic_t fscache_n_object_lookups_positive; +-extern atomic_t fscache_n_object_lookups_timed_out; +-extern atomic_t fscache_n_object_created; +-extern atomic_t fscache_n_object_avail; +-extern atomic_t fscache_n_object_dead; ++extern atomic_unchecked_t fscache_n_object_alloc; ++extern atomic_unchecked_t fscache_n_object_no_alloc; ++extern atomic_unchecked_t fscache_n_object_lookups; ++extern atomic_unchecked_t fscache_n_object_lookups_negative; ++extern atomic_unchecked_t fscache_n_object_lookups_positive; ++extern atomic_unchecked_t fscache_n_object_lookups_timed_out; ++extern atomic_unchecked_t fscache_n_object_created; ++extern atomic_unchecked_t fscache_n_object_avail; ++extern atomic_unchecked_t fscache_n_object_dead; + +-extern atomic_t fscache_n_checkaux_none; +-extern atomic_t fscache_n_checkaux_okay; +-extern atomic_t fscache_n_checkaux_update; +-extern atomic_t fscache_n_checkaux_obsolete; ++extern atomic_unchecked_t fscache_n_checkaux_none; ++extern atomic_unchecked_t fscache_n_checkaux_okay; ++extern atomic_unchecked_t fscache_n_checkaux_update; ++extern atomic_unchecked_t fscache_n_checkaux_obsolete; + + extern atomic_t fscache_n_cop_alloc_object; + extern atomic_t fscache_n_cop_lookup_object; +@@ -255,6 +255,11 @@ static inline void fscache_stat(atomic_t *stat) + atomic_inc(stat); + } + ++static inline void fscache_stat_unchecked(atomic_unchecked_t *stat) ++{ ++ atomic_inc_unchecked(stat); ++} ++ + static inline void fscache_stat_d(atomic_t *stat) + { + atomic_dec(stat); +@@ -267,6 +272,7 @@ extern const struct file_operations fscache_stats_fops; + + #define __fscache_stat(stat) (NULL) + #define fscache_stat(stat) do {} while (0) ++#define fscache_stat_unchecked(stat) do {} while (0) + #define fscache_stat_d(stat) do {} while (0) + #endif + +diff --git a/fs/fscache/object.c b/fs/fscache/object.c +index b6b897c..0ffff9c 100644 +--- a/fs/fscache/object.c ++++ b/fs/fscache/object.c +@@ -128,7 +128,7 @@ static void fscache_object_state_machine(struct fscache_object *object) + /* update the object metadata on disk */ + case FSCACHE_OBJECT_UPDATING: + clear_bit(FSCACHE_OBJECT_EV_UPDATE, &object->events); +- fscache_stat(&fscache_n_updates_run); ++ fscache_stat_unchecked(&fscache_n_updates_run); + fscache_stat(&fscache_n_cop_update_object); + object->cache->ops->update_object(object); + fscache_stat_d(&fscache_n_cop_update_object); +@@ -217,7 +217,7 @@ static void fscache_object_state_machine(struct fscache_object *object) + spin_lock(&object->lock); + object->state = FSCACHE_OBJECT_DEAD; + spin_unlock(&object->lock); +- fscache_stat(&fscache_n_object_dead); ++ fscache_stat_unchecked(&fscache_n_object_dead); + goto terminal_transit; + + /* handle the parent cache of this object being withdrawn from +@@ -232,7 +232,7 @@ static void fscache_object_state_machine(struct fscache_object *object) + spin_lock(&object->lock); + object->state = FSCACHE_OBJECT_DEAD; + spin_unlock(&object->lock); +- fscache_stat(&fscache_n_object_dead); ++ fscache_stat_unchecked(&fscache_n_object_dead); + goto terminal_transit; + + /* complain about the object being woken up once it is +@@ -461,7 +461,7 @@ static void fscache_lookup_object(struct fscache_object *object) + parent->cookie->def->name, cookie->def->name, + object->cache->tag->name); + +- fscache_stat(&fscache_n_object_lookups); ++ fscache_stat_unchecked(&fscache_n_object_lookups); + fscache_stat(&fscache_n_cop_lookup_object); + ret = object->cache->ops->lookup_object(object); + fscache_stat_d(&fscache_n_cop_lookup_object); +@@ -472,7 +472,7 @@ static void fscache_lookup_object(struct fscache_object *object) + if (ret == -ETIMEDOUT) { + /* probably stuck behind another object, so move this one to + * the back of the queue */ +- fscache_stat(&fscache_n_object_lookups_timed_out); ++ fscache_stat_unchecked(&fscache_n_object_lookups_timed_out); + set_bit(FSCACHE_OBJECT_EV_REQUEUE, &object->events); + } + +@@ -495,7 +495,7 @@ void fscache_object_lookup_negative(struct fscache_object *object) + + spin_lock(&object->lock); + if (object->state == FSCACHE_OBJECT_LOOKING_UP) { +- fscache_stat(&fscache_n_object_lookups_negative); ++ fscache_stat_unchecked(&fscache_n_object_lookups_negative); + + /* transit here to allow write requests to begin stacking up + * and read requests to begin returning ENODATA */ +@@ -541,7 +541,7 @@ void fscache_obtained_object(struct fscache_object *object) + * result, in which case there may be data available */ + spin_lock(&object->lock); + if (object->state == FSCACHE_OBJECT_LOOKING_UP) { +- fscache_stat(&fscache_n_object_lookups_positive); ++ fscache_stat_unchecked(&fscache_n_object_lookups_positive); + + clear_bit(FSCACHE_COOKIE_NO_DATA_YET, &cookie->flags); + +@@ -555,7 +555,7 @@ void fscache_obtained_object(struct fscache_object *object) + set_bit(FSCACHE_OBJECT_EV_REQUEUE, &object->events); + } else { + ASSERTCMP(object->state, ==, FSCACHE_OBJECT_CREATING); +- fscache_stat(&fscache_n_object_created); ++ fscache_stat_unchecked(&fscache_n_object_created); + + object->state = FSCACHE_OBJECT_AVAILABLE; + spin_unlock(&object->lock); +@@ -602,7 +602,7 @@ static void fscache_object_available(struct fscache_object *object) + fscache_enqueue_dependents(object); + + fscache_hist(fscache_obj_instantiate_histogram, object->lookup_jif); +- fscache_stat(&fscache_n_object_avail); ++ fscache_stat_unchecked(&fscache_n_object_avail); + + _leave(""); + } +@@ -861,7 +861,7 @@ enum fscache_checkaux fscache_check_aux(struct fscache_object *object, + enum fscache_checkaux result; + + if (!object->cookie->def->check_aux) { +- fscache_stat(&fscache_n_checkaux_none); ++ fscache_stat_unchecked(&fscache_n_checkaux_none); + return FSCACHE_CHECKAUX_OKAY; + } + +@@ -870,17 +870,17 @@ enum fscache_checkaux fscache_check_aux(struct fscache_object *object, + switch (result) { + /* entry okay as is */ + case FSCACHE_CHECKAUX_OKAY: +- fscache_stat(&fscache_n_checkaux_okay); ++ fscache_stat_unchecked(&fscache_n_checkaux_okay); + break; + + /* entry requires update */ + case FSCACHE_CHECKAUX_NEEDS_UPDATE: +- fscache_stat(&fscache_n_checkaux_update); ++ fscache_stat_unchecked(&fscache_n_checkaux_update); + break; + + /* entry requires deletion */ + case FSCACHE_CHECKAUX_OBSOLETE: +- fscache_stat(&fscache_n_checkaux_obsolete); ++ fscache_stat_unchecked(&fscache_n_checkaux_obsolete); + break; + + default: +diff --git a/fs/fscache/operation.c b/fs/fscache/operation.c +index 30afdfa..2256596 100644 +--- a/fs/fscache/operation.c ++++ b/fs/fscache/operation.c +@@ -17,7 +17,7 @@ + #include <linux/slab.h> + #include "internal.h" + +-atomic_t fscache_op_debug_id; ++atomic_unchecked_t fscache_op_debug_id; + EXPORT_SYMBOL(fscache_op_debug_id); + + /** +@@ -38,7 +38,7 @@ void fscache_enqueue_operation(struct fscache_operation *op) + ASSERTCMP(op->object->state, >=, FSCACHE_OBJECT_AVAILABLE); + ASSERTCMP(atomic_read(&op->usage), >, 0); + +- fscache_stat(&fscache_n_op_enqueue); ++ fscache_stat_unchecked(&fscache_n_op_enqueue); + switch (op->flags & FSCACHE_OP_TYPE) { + case FSCACHE_OP_ASYNC: + _debug("queue async"); +@@ -69,7 +69,7 @@ static void fscache_run_op(struct fscache_object *object, + wake_up_bit(&op->flags, FSCACHE_OP_WAITING); + if (op->processor) + fscache_enqueue_operation(op); +- fscache_stat(&fscache_n_op_run); ++ fscache_stat_unchecked(&fscache_n_op_run); + } + + /* +@@ -98,11 +98,11 @@ int fscache_submit_exclusive_op(struct fscache_object *object, + if (object->n_ops > 1) { + atomic_inc(&op->usage); + list_add_tail(&op->pend_link, &object->pending_ops); +- fscache_stat(&fscache_n_op_pend); ++ fscache_stat_unchecked(&fscache_n_op_pend); + } else if (!list_empty(&object->pending_ops)) { + atomic_inc(&op->usage); + list_add_tail(&op->pend_link, &object->pending_ops); +- fscache_stat(&fscache_n_op_pend); ++ fscache_stat_unchecked(&fscache_n_op_pend); + fscache_start_operations(object); + } else { + ASSERTCMP(object->n_in_progress, ==, 0); +@@ -118,7 +118,7 @@ int fscache_submit_exclusive_op(struct fscache_object *object, + object->n_exclusive++; /* reads and writes must wait */ + atomic_inc(&op->usage); + list_add_tail(&op->pend_link, &object->pending_ops); +- fscache_stat(&fscache_n_op_pend); ++ fscache_stat_unchecked(&fscache_n_op_pend); + ret = 0; + } else { + /* not allowed to submit ops in any other state */ +@@ -203,11 +203,11 @@ int fscache_submit_op(struct fscache_object *object, + if (object->n_exclusive > 0) { + atomic_inc(&op->usage); + list_add_tail(&op->pend_link, &object->pending_ops); +- fscache_stat(&fscache_n_op_pend); ++ fscache_stat_unchecked(&fscache_n_op_pend); + } else if (!list_empty(&object->pending_ops)) { + atomic_inc(&op->usage); + list_add_tail(&op->pend_link, &object->pending_ops); +- fscache_stat(&fscache_n_op_pend); ++ fscache_stat_unchecked(&fscache_n_op_pend); + fscache_start_operations(object); + } else { + ASSERTCMP(object->n_exclusive, ==, 0); +@@ -219,12 +219,12 @@ int fscache_submit_op(struct fscache_object *object, + object->n_ops++; + atomic_inc(&op->usage); + list_add_tail(&op->pend_link, &object->pending_ops); +- fscache_stat(&fscache_n_op_pend); ++ fscache_stat_unchecked(&fscache_n_op_pend); + ret = 0; + } else if (object->state == FSCACHE_OBJECT_DYING || + object->state == FSCACHE_OBJECT_LC_DYING || + object->state == FSCACHE_OBJECT_WITHDRAWING) { +- fscache_stat(&fscache_n_op_rejected); ++ fscache_stat_unchecked(&fscache_n_op_rejected); + ret = -ENOBUFS; + } else if (!test_bit(FSCACHE_IOERROR, &object->cache->flags)) { + fscache_report_unexpected_submission(object, op, ostate); +@@ -294,7 +294,7 @@ int fscache_cancel_op(struct fscache_operation *op) + + ret = -EBUSY; + if (!list_empty(&op->pend_link)) { +- fscache_stat(&fscache_n_op_cancelled); ++ fscache_stat_unchecked(&fscache_n_op_cancelled); + list_del_init(&op->pend_link); + object->n_ops--; + if (test_bit(FSCACHE_OP_EXCLUSIVE, &op->flags)) +@@ -331,7 +331,7 @@ void fscache_put_operation(struct fscache_operation *op) + if (test_and_set_bit(FSCACHE_OP_DEAD, &op->flags)) + BUG(); + +- fscache_stat(&fscache_n_op_release); ++ fscache_stat_unchecked(&fscache_n_op_release); + + if (op->release) { + op->release(op); +@@ -348,7 +348,7 @@ void fscache_put_operation(struct fscache_operation *op) + * lock, and defer it otherwise */ + if (!spin_trylock(&object->lock)) { + _debug("defer put"); +- fscache_stat(&fscache_n_op_deferred_release); ++ fscache_stat_unchecked(&fscache_n_op_deferred_release); + + cache = object->cache; + spin_lock(&cache->op_gc_list_lock); +@@ -410,7 +410,7 @@ void fscache_operation_gc(struct work_struct *work) + + _debug("GC DEFERRED REL OBJ%x OP%x", + object->debug_id, op->debug_id); +- fscache_stat(&fscache_n_op_gc); ++ fscache_stat_unchecked(&fscache_n_op_gc); + + ASSERTCMP(atomic_read(&op->usage), ==, 0); + +diff --git a/fs/fscache/page.c b/fs/fscache/page.c +index 3f7a59b..cf196cc 100644 +--- a/fs/fscache/page.c ++++ b/fs/fscache/page.c +@@ -60,7 +60,7 @@ bool __fscache_maybe_release_page(struct fscache_cookie *cookie, + val = radix_tree_lookup(&cookie->stores, page->index); + if (!val) { + rcu_read_unlock(); +- fscache_stat(&fscache_n_store_vmscan_not_storing); ++ fscache_stat_unchecked(&fscache_n_store_vmscan_not_storing); + __fscache_uncache_page(cookie, page); + return true; + } +@@ -90,11 +90,11 @@ bool __fscache_maybe_release_page(struct fscache_cookie *cookie, + spin_unlock(&cookie->stores_lock); + + if (xpage) { +- fscache_stat(&fscache_n_store_vmscan_cancelled); +- fscache_stat(&fscache_n_store_radix_deletes); ++ fscache_stat_unchecked(&fscache_n_store_vmscan_cancelled); ++ fscache_stat_unchecked(&fscache_n_store_radix_deletes); + ASSERTCMP(xpage, ==, page); + } else { +- fscache_stat(&fscache_n_store_vmscan_gone); ++ fscache_stat_unchecked(&fscache_n_store_vmscan_gone); + } + + wake_up_bit(&cookie->flags, 0); +@@ -107,7 +107,7 @@ page_busy: + /* we might want to wait here, but that could deadlock the allocator as + * the work threads writing to the cache may all end up sleeping + * on memory allocation */ +- fscache_stat(&fscache_n_store_vmscan_busy); ++ fscache_stat_unchecked(&fscache_n_store_vmscan_busy); + return false; + } + EXPORT_SYMBOL(__fscache_maybe_release_page); +@@ -131,7 +131,7 @@ static void fscache_end_page_write(struct fscache_object *object, + FSCACHE_COOKIE_STORING_TAG); + if (!radix_tree_tag_get(&cookie->stores, page->index, + FSCACHE_COOKIE_PENDING_TAG)) { +- fscache_stat(&fscache_n_store_radix_deletes); ++ fscache_stat_unchecked(&fscache_n_store_radix_deletes); + xpage = radix_tree_delete(&cookie->stores, page->index); + } + spin_unlock(&cookie->stores_lock); +@@ -152,7 +152,7 @@ static void fscache_attr_changed_op(struct fscache_operation *op) + + _enter("{OBJ%x OP%x}", object->debug_id, op->debug_id); + +- fscache_stat(&fscache_n_attr_changed_calls); ++ fscache_stat_unchecked(&fscache_n_attr_changed_calls); + + if (fscache_object_is_active(object)) { + fscache_stat(&fscache_n_cop_attr_changed); +@@ -177,11 +177,11 @@ int __fscache_attr_changed(struct fscache_cookie *cookie) + + ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX); + +- fscache_stat(&fscache_n_attr_changed); ++ fscache_stat_unchecked(&fscache_n_attr_changed); + + op = kzalloc(sizeof(*op), GFP_KERNEL); + if (!op) { +- fscache_stat(&fscache_n_attr_changed_nomem); ++ fscache_stat_unchecked(&fscache_n_attr_changed_nomem); + _leave(" = -ENOMEM"); + return -ENOMEM; + } +@@ -199,7 +199,7 @@ int __fscache_attr_changed(struct fscache_cookie *cookie) + if (fscache_submit_exclusive_op(object, op) < 0) + goto nobufs; + spin_unlock(&cookie->lock); +- fscache_stat(&fscache_n_attr_changed_ok); ++ fscache_stat_unchecked(&fscache_n_attr_changed_ok); + fscache_put_operation(op); + _leave(" = 0"); + return 0; +@@ -207,7 +207,7 @@ int __fscache_attr_changed(struct fscache_cookie *cookie) + nobufs: + spin_unlock(&cookie->lock); + kfree(op); +- fscache_stat(&fscache_n_attr_changed_nobufs); ++ fscache_stat_unchecked(&fscache_n_attr_changed_nobufs); + _leave(" = %d", -ENOBUFS); + return -ENOBUFS; + } +@@ -243,7 +243,7 @@ static struct fscache_retrieval *fscache_alloc_retrieval( + /* allocate a retrieval operation and attempt to submit it */ + op = kzalloc(sizeof(*op), GFP_NOIO); + if (!op) { +- fscache_stat(&fscache_n_retrievals_nomem); ++ fscache_stat_unchecked(&fscache_n_retrievals_nomem); + return NULL; + } + +@@ -271,13 +271,13 @@ static int fscache_wait_for_deferred_lookup(struct fscache_cookie *cookie) + return 0; + } + +- fscache_stat(&fscache_n_retrievals_wait); ++ fscache_stat_unchecked(&fscache_n_retrievals_wait); + + jif = jiffies; + if (wait_on_bit(&cookie->flags, FSCACHE_COOKIE_LOOKING_UP, + fscache_wait_bit_interruptible, + TASK_INTERRUPTIBLE) != 0) { +- fscache_stat(&fscache_n_retrievals_intr); ++ fscache_stat_unchecked(&fscache_n_retrievals_intr); + _leave(" = -ERESTARTSYS"); + return -ERESTARTSYS; + } +@@ -295,8 +295,8 @@ static int fscache_wait_for_deferred_lookup(struct fscache_cookie *cookie) + */ + static int fscache_wait_for_retrieval_activation(struct fscache_object *object, + struct fscache_retrieval *op, +- atomic_t *stat_op_waits, +- atomic_t *stat_object_dead) ++ atomic_unchecked_t *stat_op_waits, ++ atomic_unchecked_t *stat_object_dead) + { + int ret; + +@@ -304,7 +304,7 @@ static int fscache_wait_for_retrieval_activation(struct fscache_object *object, + goto check_if_dead; + + _debug(">>> WT"); +- fscache_stat(stat_op_waits); ++ fscache_stat_unchecked(stat_op_waits); + if (wait_on_bit(&op->op.flags, FSCACHE_OP_WAITING, + fscache_wait_bit_interruptible, + TASK_INTERRUPTIBLE) < 0) { +@@ -321,7 +321,7 @@ static int fscache_wait_for_retrieval_activation(struct fscache_object *object, + + check_if_dead: + if (unlikely(fscache_object_is_dead(object))) { +- fscache_stat(stat_object_dead); ++ fscache_stat_unchecked(stat_object_dead); + return -ENOBUFS; + } + return 0; +@@ -348,7 +348,7 @@ int __fscache_read_or_alloc_page(struct fscache_cookie *cookie, + + _enter("%p,%p,,,", cookie, page); + +- fscache_stat(&fscache_n_retrievals); ++ fscache_stat_unchecked(&fscache_n_retrievals); + + if (hlist_empty(&cookie->backing_objects)) + goto nobufs; +@@ -381,7 +381,7 @@ int __fscache_read_or_alloc_page(struct fscache_cookie *cookie, + goto nobufs_unlock; + spin_unlock(&cookie->lock); + +- fscache_stat(&fscache_n_retrieval_ops); ++ fscache_stat_unchecked(&fscache_n_retrieval_ops); + + /* pin the netfs read context in case we need to do the actual netfs + * read because we've encountered a cache read failure */ +@@ -411,15 +411,15 @@ int __fscache_read_or_alloc_page(struct fscache_cookie *cookie, + + error: + if (ret == -ENOMEM) +- fscache_stat(&fscache_n_retrievals_nomem); ++ fscache_stat_unchecked(&fscache_n_retrievals_nomem); + else if (ret == -ERESTARTSYS) +- fscache_stat(&fscache_n_retrievals_intr); ++ fscache_stat_unchecked(&fscache_n_retrievals_intr); + else if (ret == -ENODATA) +- fscache_stat(&fscache_n_retrievals_nodata); ++ fscache_stat_unchecked(&fscache_n_retrievals_nodata); + else if (ret < 0) +- fscache_stat(&fscache_n_retrievals_nobufs); ++ fscache_stat_unchecked(&fscache_n_retrievals_nobufs); + else +- fscache_stat(&fscache_n_retrievals_ok); ++ fscache_stat_unchecked(&fscache_n_retrievals_ok); + + fscache_put_retrieval(op); + _leave(" = %d", ret); +@@ -429,7 +429,7 @@ nobufs_unlock: + spin_unlock(&cookie->lock); + kfree(op); + nobufs: +- fscache_stat(&fscache_n_retrievals_nobufs); ++ fscache_stat_unchecked(&fscache_n_retrievals_nobufs); + _leave(" = -ENOBUFS"); + return -ENOBUFS; + } +@@ -467,7 +467,7 @@ int __fscache_read_or_alloc_pages(struct fscache_cookie *cookie, + + _enter("%p,,%d,,,", cookie, *nr_pages); + +- fscache_stat(&fscache_n_retrievals); ++ fscache_stat_unchecked(&fscache_n_retrievals); + + if (hlist_empty(&cookie->backing_objects)) + goto nobufs; +@@ -497,7 +497,7 @@ int __fscache_read_or_alloc_pages(struct fscache_cookie *cookie, + goto nobufs_unlock; + spin_unlock(&cookie->lock); + +- fscache_stat(&fscache_n_retrieval_ops); ++ fscache_stat_unchecked(&fscache_n_retrieval_ops); + + /* pin the netfs read context in case we need to do the actual netfs + * read because we've encountered a cache read failure */ +@@ -527,15 +527,15 @@ int __fscache_read_or_alloc_pages(struct fscache_cookie *cookie, + + error: + if (ret == -ENOMEM) +- fscache_stat(&fscache_n_retrievals_nomem); ++ fscache_stat_unchecked(&fscache_n_retrievals_nomem); + else if (ret == -ERESTARTSYS) +- fscache_stat(&fscache_n_retrievals_intr); ++ fscache_stat_unchecked(&fscache_n_retrievals_intr); + else if (ret == -ENODATA) +- fscache_stat(&fscache_n_retrievals_nodata); ++ fscache_stat_unchecked(&fscache_n_retrievals_nodata); + else if (ret < 0) +- fscache_stat(&fscache_n_retrievals_nobufs); ++ fscache_stat_unchecked(&fscache_n_retrievals_nobufs); + else +- fscache_stat(&fscache_n_retrievals_ok); ++ fscache_stat_unchecked(&fscache_n_retrievals_ok); + + fscache_put_retrieval(op); + _leave(" = %d", ret); +@@ -545,7 +545,7 @@ nobufs_unlock: + spin_unlock(&cookie->lock); + kfree(op); + nobufs: +- fscache_stat(&fscache_n_retrievals_nobufs); ++ fscache_stat_unchecked(&fscache_n_retrievals_nobufs); + _leave(" = -ENOBUFS"); + return -ENOBUFS; + } +@@ -569,7 +569,7 @@ int __fscache_alloc_page(struct fscache_cookie *cookie, + + _enter("%p,%p,,,", cookie, page); + +- fscache_stat(&fscache_n_allocs); ++ fscache_stat_unchecked(&fscache_n_allocs); + + if (hlist_empty(&cookie->backing_objects)) + goto nobufs; +@@ -595,7 +595,7 @@ int __fscache_alloc_page(struct fscache_cookie *cookie, + goto nobufs_unlock; + spin_unlock(&cookie->lock); + +- fscache_stat(&fscache_n_alloc_ops); ++ fscache_stat_unchecked(&fscache_n_alloc_ops); + + ret = fscache_wait_for_retrieval_activation( + object, op, +@@ -611,11 +611,11 @@ int __fscache_alloc_page(struct fscache_cookie *cookie, + + error: + if (ret == -ERESTARTSYS) +- fscache_stat(&fscache_n_allocs_intr); ++ fscache_stat_unchecked(&fscache_n_allocs_intr); + else if (ret < 0) +- fscache_stat(&fscache_n_allocs_nobufs); ++ fscache_stat_unchecked(&fscache_n_allocs_nobufs); + else +- fscache_stat(&fscache_n_allocs_ok); ++ fscache_stat_unchecked(&fscache_n_allocs_ok); + + fscache_put_retrieval(op); + _leave(" = %d", ret); +@@ -625,7 +625,7 @@ nobufs_unlock: + spin_unlock(&cookie->lock); + kfree(op); + nobufs: +- fscache_stat(&fscache_n_allocs_nobufs); ++ fscache_stat_unchecked(&fscache_n_allocs_nobufs); + _leave(" = -ENOBUFS"); + return -ENOBUFS; + } +@@ -666,7 +666,7 @@ static void fscache_write_op(struct fscache_operation *_op) + + spin_lock(&cookie->stores_lock); + +- fscache_stat(&fscache_n_store_calls); ++ fscache_stat_unchecked(&fscache_n_store_calls); + + /* find a page to store */ + page = NULL; +@@ -677,7 +677,7 @@ static void fscache_write_op(struct fscache_operation *_op) + page = results[0]; + _debug("gang %d [%lx]", n, page->index); + if (page->index > op->store_limit) { +- fscache_stat(&fscache_n_store_pages_over_limit); ++ fscache_stat_unchecked(&fscache_n_store_pages_over_limit); + goto superseded; + } + +@@ -689,7 +689,7 @@ static void fscache_write_op(struct fscache_operation *_op) + spin_unlock(&cookie->stores_lock); + spin_unlock(&object->lock); + +- fscache_stat(&fscache_n_store_pages); ++ fscache_stat_unchecked(&fscache_n_store_pages); + fscache_stat(&fscache_n_cop_write_page); + ret = object->cache->ops->write_page(op, page); + fscache_stat_d(&fscache_n_cop_write_page); +@@ -757,7 +757,7 @@ int __fscache_write_page(struct fscache_cookie *cookie, + ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX); + ASSERT(PageFsCache(page)); + +- fscache_stat(&fscache_n_stores); ++ fscache_stat_unchecked(&fscache_n_stores); + + op = kzalloc(sizeof(*op), GFP_NOIO); + if (!op) +@@ -808,7 +808,7 @@ int __fscache_write_page(struct fscache_cookie *cookie, + spin_unlock(&cookie->stores_lock); + spin_unlock(&object->lock); + +- op->op.debug_id = atomic_inc_return(&fscache_op_debug_id); ++ op->op.debug_id = atomic_inc_return_unchecked(&fscache_op_debug_id); + op->store_limit = object->store_limit; + + if (fscache_submit_op(object, &op->op) < 0) +@@ -816,8 +816,8 @@ int __fscache_write_page(struct fscache_cookie *cookie, + + spin_unlock(&cookie->lock); + radix_tree_preload_end(); +- fscache_stat(&fscache_n_store_ops); +- fscache_stat(&fscache_n_stores_ok); ++ fscache_stat_unchecked(&fscache_n_store_ops); ++ fscache_stat_unchecked(&fscache_n_stores_ok); + + /* the work queue now carries its own ref on the object */ + fscache_put_operation(&op->op); +@@ -825,14 +825,14 @@ int __fscache_write_page(struct fscache_cookie *cookie, + return 0; + + already_queued: +- fscache_stat(&fscache_n_stores_again); ++ fscache_stat_unchecked(&fscache_n_stores_again); + already_pending: + spin_unlock(&cookie->stores_lock); + spin_unlock(&object->lock); + spin_unlock(&cookie->lock); + radix_tree_preload_end(); + kfree(op); +- fscache_stat(&fscache_n_stores_ok); ++ fscache_stat_unchecked(&fscache_n_stores_ok); + _leave(" = 0"); + return 0; + +@@ -851,14 +851,14 @@ nobufs: + spin_unlock(&cookie->lock); + radix_tree_preload_end(); + kfree(op); +- fscache_stat(&fscache_n_stores_nobufs); ++ fscache_stat_unchecked(&fscache_n_stores_nobufs); + _leave(" = -ENOBUFS"); + return -ENOBUFS; + + nomem_free: + kfree(op); + nomem: +- fscache_stat(&fscache_n_stores_oom); ++ fscache_stat_unchecked(&fscache_n_stores_oom); + _leave(" = -ENOMEM"); + return -ENOMEM; + } +@@ -876,7 +876,7 @@ void __fscache_uncache_page(struct fscache_cookie *cookie, struct page *page) + ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX); + ASSERTCMP(page, !=, NULL); + +- fscache_stat(&fscache_n_uncaches); ++ fscache_stat_unchecked(&fscache_n_uncaches); + + /* cache withdrawal may beat us to it */ + if (!PageFsCache(page)) +@@ -929,7 +929,7 @@ void fscache_mark_pages_cached(struct fscache_retrieval *op, + unsigned long loop; + + #ifdef CONFIG_FSCACHE_STATS +- atomic_add(pagevec->nr, &fscache_n_marks); ++ atomic_add_unchecked(pagevec->nr, &fscache_n_marks); + #endif + + for (loop = 0; loop < pagevec->nr; loop++) { +diff --git a/fs/fscache/stats.c b/fs/fscache/stats.c +index 4765190..2a067f2 100644 +--- a/fs/fscache/stats.c ++++ b/fs/fscache/stats.c +@@ -18,95 +18,95 @@ + /* + * operation counters + */ +-atomic_t fscache_n_op_pend; +-atomic_t fscache_n_op_run; +-atomic_t fscache_n_op_enqueue; +-atomic_t fscache_n_op_requeue; +-atomic_t fscache_n_op_deferred_release; +-atomic_t fscache_n_op_release; +-atomic_t fscache_n_op_gc; +-atomic_t fscache_n_op_cancelled; +-atomic_t fscache_n_op_rejected; ++atomic_unchecked_t fscache_n_op_pend; ++atomic_unchecked_t fscache_n_op_run; ++atomic_unchecked_t fscache_n_op_enqueue; ++atomic_unchecked_t fscache_n_op_requeue; ++atomic_unchecked_t fscache_n_op_deferred_release; ++atomic_unchecked_t fscache_n_op_release; ++atomic_unchecked_t fscache_n_op_gc; ++atomic_unchecked_t fscache_n_op_cancelled; ++atomic_unchecked_t fscache_n_op_rejected; + +-atomic_t fscache_n_attr_changed; +-atomic_t fscache_n_attr_changed_ok; +-atomic_t fscache_n_attr_changed_nobufs; +-atomic_t fscache_n_attr_changed_nomem; +-atomic_t fscache_n_attr_changed_calls; ++atomic_unchecked_t fscache_n_attr_changed; ++atomic_unchecked_t fscache_n_attr_changed_ok; ++atomic_unchecked_t fscache_n_attr_changed_nobufs; ++atomic_unchecked_t fscache_n_attr_changed_nomem; ++atomic_unchecked_t fscache_n_attr_changed_calls; + +-atomic_t fscache_n_allocs; +-atomic_t fscache_n_allocs_ok; +-atomic_t fscache_n_allocs_wait; +-atomic_t fscache_n_allocs_nobufs; +-atomic_t fscache_n_allocs_intr; +-atomic_t fscache_n_allocs_object_dead; +-atomic_t fscache_n_alloc_ops; +-atomic_t fscache_n_alloc_op_waits; ++atomic_unchecked_t fscache_n_allocs; ++atomic_unchecked_t fscache_n_allocs_ok; ++atomic_unchecked_t fscache_n_allocs_wait; ++atomic_unchecked_t fscache_n_allocs_nobufs; ++atomic_unchecked_t fscache_n_allocs_intr; ++atomic_unchecked_t fscache_n_allocs_object_dead; ++atomic_unchecked_t fscache_n_alloc_ops; ++atomic_unchecked_t fscache_n_alloc_op_waits; + +-atomic_t fscache_n_retrievals; +-atomic_t fscache_n_retrievals_ok; +-atomic_t fscache_n_retrievals_wait; +-atomic_t fscache_n_retrievals_nodata; +-atomic_t fscache_n_retrievals_nobufs; +-atomic_t fscache_n_retrievals_intr; +-atomic_t fscache_n_retrievals_nomem; +-atomic_t fscache_n_retrievals_object_dead; +-atomic_t fscache_n_retrieval_ops; +-atomic_t fscache_n_retrieval_op_waits; ++atomic_unchecked_t fscache_n_retrievals; ++atomic_unchecked_t fscache_n_retrievals_ok; ++atomic_unchecked_t fscache_n_retrievals_wait; ++atomic_unchecked_t fscache_n_retrievals_nodata; ++atomic_unchecked_t fscache_n_retrievals_nobufs; ++atomic_unchecked_t fscache_n_retrievals_intr; ++atomic_unchecked_t fscache_n_retrievals_nomem; ++atomic_unchecked_t fscache_n_retrievals_object_dead; ++atomic_unchecked_t fscache_n_retrieval_ops; ++atomic_unchecked_t fscache_n_retrieval_op_waits; + +-atomic_t fscache_n_stores; +-atomic_t fscache_n_stores_ok; +-atomic_t fscache_n_stores_again; +-atomic_t fscache_n_stores_nobufs; +-atomic_t fscache_n_stores_oom; +-atomic_t fscache_n_store_ops; +-atomic_t fscache_n_store_calls; +-atomic_t fscache_n_store_pages; +-atomic_t fscache_n_store_radix_deletes; +-atomic_t fscache_n_store_pages_over_limit; ++atomic_unchecked_t fscache_n_stores; ++atomic_unchecked_t fscache_n_stores_ok; ++atomic_unchecked_t fscache_n_stores_again; ++atomic_unchecked_t fscache_n_stores_nobufs; ++atomic_unchecked_t fscache_n_stores_oom; ++atomic_unchecked_t fscache_n_store_ops; ++atomic_unchecked_t fscache_n_store_calls; ++atomic_unchecked_t fscache_n_store_pages; ++atomic_unchecked_t fscache_n_store_radix_deletes; ++atomic_unchecked_t fscache_n_store_pages_over_limit; + +-atomic_t fscache_n_store_vmscan_not_storing; +-atomic_t fscache_n_store_vmscan_gone; +-atomic_t fscache_n_store_vmscan_busy; +-atomic_t fscache_n_store_vmscan_cancelled; ++atomic_unchecked_t fscache_n_store_vmscan_not_storing; ++atomic_unchecked_t fscache_n_store_vmscan_gone; ++atomic_unchecked_t fscache_n_store_vmscan_busy; ++atomic_unchecked_t fscache_n_store_vmscan_cancelled; + +-atomic_t fscache_n_marks; +-atomic_t fscache_n_uncaches; ++atomic_unchecked_t fscache_n_marks; ++atomic_unchecked_t fscache_n_uncaches; + +-atomic_t fscache_n_acquires; +-atomic_t fscache_n_acquires_null; +-atomic_t fscache_n_acquires_no_cache; +-atomic_t fscache_n_acquires_ok; +-atomic_t fscache_n_acquires_nobufs; +-atomic_t fscache_n_acquires_oom; ++atomic_unchecked_t fscache_n_acquires; ++atomic_unchecked_t fscache_n_acquires_null; ++atomic_unchecked_t fscache_n_acquires_no_cache; ++atomic_unchecked_t fscache_n_acquires_ok; ++atomic_unchecked_t fscache_n_acquires_nobufs; ++atomic_unchecked_t fscache_n_acquires_oom; + +-atomic_t fscache_n_updates; +-atomic_t fscache_n_updates_null; +-atomic_t fscache_n_updates_run; ++atomic_unchecked_t fscache_n_updates; ++atomic_unchecked_t fscache_n_updates_null; ++atomic_unchecked_t fscache_n_updates_run; + +-atomic_t fscache_n_relinquishes; +-atomic_t fscache_n_relinquishes_null; +-atomic_t fscache_n_relinquishes_waitcrt; +-atomic_t fscache_n_relinquishes_retire; ++atomic_unchecked_t fscache_n_relinquishes; ++atomic_unchecked_t fscache_n_relinquishes_null; ++atomic_unchecked_t fscache_n_relinquishes_waitcrt; ++atomic_unchecked_t fscache_n_relinquishes_retire; + +-atomic_t fscache_n_cookie_index; +-atomic_t fscache_n_cookie_data; +-atomic_t fscache_n_cookie_special; ++atomic_unchecked_t fscache_n_cookie_index; ++atomic_unchecked_t fscache_n_cookie_data; ++atomic_unchecked_t fscache_n_cookie_special; + +-atomic_t fscache_n_object_alloc; +-atomic_t fscache_n_object_no_alloc; +-atomic_t fscache_n_object_lookups; +-atomic_t fscache_n_object_lookups_negative; +-atomic_t fscache_n_object_lookups_positive; +-atomic_t fscache_n_object_lookups_timed_out; +-atomic_t fscache_n_object_created; +-atomic_t fscache_n_object_avail; +-atomic_t fscache_n_object_dead; ++atomic_unchecked_t fscache_n_object_alloc; ++atomic_unchecked_t fscache_n_object_no_alloc; ++atomic_unchecked_t fscache_n_object_lookups; ++atomic_unchecked_t fscache_n_object_lookups_negative; ++atomic_unchecked_t fscache_n_object_lookups_positive; ++atomic_unchecked_t fscache_n_object_lookups_timed_out; ++atomic_unchecked_t fscache_n_object_created; ++atomic_unchecked_t fscache_n_object_avail; ++atomic_unchecked_t fscache_n_object_dead; + +-atomic_t fscache_n_checkaux_none; +-atomic_t fscache_n_checkaux_okay; +-atomic_t fscache_n_checkaux_update; +-atomic_t fscache_n_checkaux_obsolete; ++atomic_unchecked_t fscache_n_checkaux_none; ++atomic_unchecked_t fscache_n_checkaux_okay; ++atomic_unchecked_t fscache_n_checkaux_update; ++atomic_unchecked_t fscache_n_checkaux_obsolete; + + atomic_t fscache_n_cop_alloc_object; + atomic_t fscache_n_cop_lookup_object; +@@ -133,113 +133,113 @@ static int fscache_stats_show(struct seq_file *m, void *v) + seq_puts(m, "FS-Cache statistics\n"); + + seq_printf(m, "Cookies: idx=%u dat=%u spc=%u\n", +- atomic_read(&fscache_n_cookie_index), +- atomic_read(&fscache_n_cookie_data), +- atomic_read(&fscache_n_cookie_special)); ++ atomic_read_unchecked(&fscache_n_cookie_index), ++ atomic_read_unchecked(&fscache_n_cookie_data), ++ atomic_read_unchecked(&fscache_n_cookie_special)); + + seq_printf(m, "Objects: alc=%u nal=%u avl=%u ded=%u\n", +- atomic_read(&fscache_n_object_alloc), +- atomic_read(&fscache_n_object_no_alloc), +- atomic_read(&fscache_n_object_avail), +- atomic_read(&fscache_n_object_dead)); ++ atomic_read_unchecked(&fscache_n_object_alloc), ++ atomic_read_unchecked(&fscache_n_object_no_alloc), ++ atomic_read_unchecked(&fscache_n_object_avail), ++ atomic_read_unchecked(&fscache_n_object_dead)); + seq_printf(m, "ChkAux : non=%u ok=%u upd=%u obs=%u\n", +- atomic_read(&fscache_n_checkaux_none), +- atomic_read(&fscache_n_checkaux_okay), +- atomic_read(&fscache_n_checkaux_update), +- atomic_read(&fscache_n_checkaux_obsolete)); ++ atomic_read_unchecked(&fscache_n_checkaux_none), ++ atomic_read_unchecked(&fscache_n_checkaux_okay), ++ atomic_read_unchecked(&fscache_n_checkaux_update), ++ atomic_read_unchecked(&fscache_n_checkaux_obsolete)); + + seq_printf(m, "Pages : mrk=%u unc=%u\n", +- atomic_read(&fscache_n_marks), +- atomic_read(&fscache_n_uncaches)); ++ atomic_read_unchecked(&fscache_n_marks), ++ atomic_read_unchecked(&fscache_n_uncaches)); + + seq_printf(m, "Acquire: n=%u nul=%u noc=%u ok=%u nbf=%u" + " oom=%u\n", +- atomic_read(&fscache_n_acquires), +- atomic_read(&fscache_n_acquires_null), +- atomic_read(&fscache_n_acquires_no_cache), +- atomic_read(&fscache_n_acquires_ok), +- atomic_read(&fscache_n_acquires_nobufs), +- atomic_read(&fscache_n_acquires_oom)); ++ atomic_read_unchecked(&fscache_n_acquires), ++ atomic_read_unchecked(&fscache_n_acquires_null), ++ atomic_read_unchecked(&fscache_n_acquires_no_cache), ++ atomic_read_unchecked(&fscache_n_acquires_ok), ++ atomic_read_unchecked(&fscache_n_acquires_nobufs), ++ atomic_read_unchecked(&fscache_n_acquires_oom)); + + seq_printf(m, "Lookups: n=%u neg=%u pos=%u crt=%u tmo=%u\n", +- atomic_read(&fscache_n_object_lookups), +- atomic_read(&fscache_n_object_lookups_negative), +- atomic_read(&fscache_n_object_lookups_positive), +- atomic_read(&fscache_n_object_created), +- atomic_read(&fscache_n_object_lookups_timed_out)); ++ atomic_read_unchecked(&fscache_n_object_lookups), ++ atomic_read_unchecked(&fscache_n_object_lookups_negative), ++ atomic_read_unchecked(&fscache_n_object_lookups_positive), ++ atomic_read_unchecked(&fscache_n_object_created), ++ atomic_read_unchecked(&fscache_n_object_lookups_timed_out)); + + seq_printf(m, "Updates: n=%u nul=%u run=%u\n", +- atomic_read(&fscache_n_updates), +- atomic_read(&fscache_n_updates_null), +- atomic_read(&fscache_n_updates_run)); ++ atomic_read_unchecked(&fscache_n_updates), ++ atomic_read_unchecked(&fscache_n_updates_null), ++ atomic_read_unchecked(&fscache_n_updates_run)); + + seq_printf(m, "Relinqs: n=%u nul=%u wcr=%u rtr=%u\n", +- atomic_read(&fscache_n_relinquishes), +- atomic_read(&fscache_n_relinquishes_null), +- atomic_read(&fscache_n_relinquishes_waitcrt), +- atomic_read(&fscache_n_relinquishes_retire)); ++ atomic_read_unchecked(&fscache_n_relinquishes), ++ atomic_read_unchecked(&fscache_n_relinquishes_null), ++ atomic_read_unchecked(&fscache_n_relinquishes_waitcrt), ++ atomic_read_unchecked(&fscache_n_relinquishes_retire)); + + seq_printf(m, "AttrChg: n=%u ok=%u nbf=%u oom=%u run=%u\n", +- atomic_read(&fscache_n_attr_changed), +- atomic_read(&fscache_n_attr_changed_ok), +- atomic_read(&fscache_n_attr_changed_nobufs), +- atomic_read(&fscache_n_attr_changed_nomem), +- atomic_read(&fscache_n_attr_changed_calls)); ++ atomic_read_unchecked(&fscache_n_attr_changed), ++ atomic_read_unchecked(&fscache_n_attr_changed_ok), ++ atomic_read_unchecked(&fscache_n_attr_changed_nobufs), ++ atomic_read_unchecked(&fscache_n_attr_changed_nomem), ++ atomic_read_unchecked(&fscache_n_attr_changed_calls)); + + seq_printf(m, "Allocs : n=%u ok=%u wt=%u nbf=%u int=%u\n", +- atomic_read(&fscache_n_allocs), +- atomic_read(&fscache_n_allocs_ok), +- atomic_read(&fscache_n_allocs_wait), +- atomic_read(&fscache_n_allocs_nobufs), +- atomic_read(&fscache_n_allocs_intr)); ++ atomic_read_unchecked(&fscache_n_allocs), ++ atomic_read_unchecked(&fscache_n_allocs_ok), ++ atomic_read_unchecked(&fscache_n_allocs_wait), ++ atomic_read_unchecked(&fscache_n_allocs_nobufs), ++ atomic_read_unchecked(&fscache_n_allocs_intr)); + seq_printf(m, "Allocs : ops=%u owt=%u abt=%u\n", +- atomic_read(&fscache_n_alloc_ops), +- atomic_read(&fscache_n_alloc_op_waits), +- atomic_read(&fscache_n_allocs_object_dead)); ++ atomic_read_unchecked(&fscache_n_alloc_ops), ++ atomic_read_unchecked(&fscache_n_alloc_op_waits), ++ atomic_read_unchecked(&fscache_n_allocs_object_dead)); + + seq_printf(m, "Retrvls: n=%u ok=%u wt=%u nod=%u nbf=%u" + " int=%u oom=%u\n", +- atomic_read(&fscache_n_retrievals), +- atomic_read(&fscache_n_retrievals_ok), +- atomic_read(&fscache_n_retrievals_wait), +- atomic_read(&fscache_n_retrievals_nodata), +- atomic_read(&fscache_n_retrievals_nobufs), +- atomic_read(&fscache_n_retrievals_intr), +- atomic_read(&fscache_n_retrievals_nomem)); ++ atomic_read_unchecked(&fscache_n_retrievals), ++ atomic_read_unchecked(&fscache_n_retrievals_ok), ++ atomic_read_unchecked(&fscache_n_retrievals_wait), ++ atomic_read_unchecked(&fscache_n_retrievals_nodata), ++ atomic_read_unchecked(&fscache_n_retrievals_nobufs), ++ atomic_read_unchecked(&fscache_n_retrievals_intr), ++ atomic_read_unchecked(&fscache_n_retrievals_nomem)); + seq_printf(m, "Retrvls: ops=%u owt=%u abt=%u\n", +- atomic_read(&fscache_n_retrieval_ops), +- atomic_read(&fscache_n_retrieval_op_waits), +- atomic_read(&fscache_n_retrievals_object_dead)); ++ atomic_read_unchecked(&fscache_n_retrieval_ops), ++ atomic_read_unchecked(&fscache_n_retrieval_op_waits), ++ atomic_read_unchecked(&fscache_n_retrievals_object_dead)); + + seq_printf(m, "Stores : n=%u ok=%u agn=%u nbf=%u oom=%u\n", +- atomic_read(&fscache_n_stores), +- atomic_read(&fscache_n_stores_ok), +- atomic_read(&fscache_n_stores_again), +- atomic_read(&fscache_n_stores_nobufs), +- atomic_read(&fscache_n_stores_oom)); ++ atomic_read_unchecked(&fscache_n_stores), ++ atomic_read_unchecked(&fscache_n_stores_ok), ++ atomic_read_unchecked(&fscache_n_stores_again), ++ atomic_read_unchecked(&fscache_n_stores_nobufs), ++ atomic_read_unchecked(&fscache_n_stores_oom)); + seq_printf(m, "Stores : ops=%u run=%u pgs=%u rxd=%u olm=%u\n", +- atomic_read(&fscache_n_store_ops), +- atomic_read(&fscache_n_store_calls), +- atomic_read(&fscache_n_store_pages), +- atomic_read(&fscache_n_store_radix_deletes), +- atomic_read(&fscache_n_store_pages_over_limit)); ++ atomic_read_unchecked(&fscache_n_store_ops), ++ atomic_read_unchecked(&fscache_n_store_calls), ++ atomic_read_unchecked(&fscache_n_store_pages), ++ atomic_read_unchecked(&fscache_n_store_radix_deletes), ++ atomic_read_unchecked(&fscache_n_store_pages_over_limit)); + + seq_printf(m, "VmScan : nos=%u gon=%u bsy=%u can=%u\n", +- atomic_read(&fscache_n_store_vmscan_not_storing), +- atomic_read(&fscache_n_store_vmscan_gone), +- atomic_read(&fscache_n_store_vmscan_busy), +- atomic_read(&fscache_n_store_vmscan_cancelled)); ++ atomic_read_unchecked(&fscache_n_store_vmscan_not_storing), ++ atomic_read_unchecked(&fscache_n_store_vmscan_gone), ++ atomic_read_unchecked(&fscache_n_store_vmscan_busy), ++ atomic_read_unchecked(&fscache_n_store_vmscan_cancelled)); + + seq_printf(m, "Ops : pend=%u run=%u enq=%u can=%u rej=%u\n", +- atomic_read(&fscache_n_op_pend), +- atomic_read(&fscache_n_op_run), +- atomic_read(&fscache_n_op_enqueue), +- atomic_read(&fscache_n_op_cancelled), +- atomic_read(&fscache_n_op_rejected)); ++ atomic_read_unchecked(&fscache_n_op_pend), ++ atomic_read_unchecked(&fscache_n_op_run), ++ atomic_read_unchecked(&fscache_n_op_enqueue), ++ atomic_read_unchecked(&fscache_n_op_cancelled), ++ atomic_read_unchecked(&fscache_n_op_rejected)); + seq_printf(m, "Ops : dfr=%u rel=%u gc=%u\n", +- atomic_read(&fscache_n_op_deferred_release), +- atomic_read(&fscache_n_op_release), +- atomic_read(&fscache_n_op_gc)); ++ atomic_read_unchecked(&fscache_n_op_deferred_release), ++ atomic_read_unchecked(&fscache_n_op_release), ++ atomic_read_unchecked(&fscache_n_op_gc)); + + seq_printf(m, "CacheOp: alo=%d luo=%d luc=%d gro=%d\n", + atomic_read(&fscache_n_cop_alloc_object), +diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c +index 3426521..3b75162 100644 +--- a/fs/fuse/cuse.c ++++ b/fs/fuse/cuse.c +@@ -587,10 +587,12 @@ static int __init cuse_init(void) + INIT_LIST_HEAD(&cuse_conntbl[i]); + + /* inherit and extend fuse_dev_operations */ +- cuse_channel_fops = fuse_dev_operations; +- cuse_channel_fops.owner = THIS_MODULE; +- cuse_channel_fops.open = cuse_channel_open; +- cuse_channel_fops.release = cuse_channel_release; ++ pax_open_kernel(); ++ memcpy((void *)&cuse_channel_fops, &fuse_dev_operations, sizeof(fuse_dev_operations)); ++ *(void **)&cuse_channel_fops.owner = THIS_MODULE; ++ *(void **)&cuse_channel_fops.open = cuse_channel_open; ++ *(void **)&cuse_channel_fops.release = cuse_channel_release; ++ pax_close_kernel(); + + cuse_class = class_create(THIS_MODULE, "cuse"); + if (IS_ERR(cuse_class)) +diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c +index 7df2b5e..5804aa7 100644 +--- a/fs/fuse/dev.c ++++ b/fs/fuse/dev.c +@@ -1242,7 +1242,7 @@ static ssize_t fuse_dev_splice_read(struct file *in, loff_t *ppos, + ret = 0; + pipe_lock(pipe); + +- if (!pipe->readers) { ++ if (!atomic_read(&pipe->readers)) { + send_sig(SIGPIPE, current, 0); + if (!ret) + ret = -EPIPE; +diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c +index bc43832..0cfe5a6 100644 +--- a/fs/fuse/dir.c ++++ b/fs/fuse/dir.c +@@ -1181,7 +1181,7 @@ static char *read_link(struct dentry *dentry) + return link; + } + +-static void free_link(char *link) ++static void free_link(const char *link) + { + if (!IS_ERR(link)) + free_page((unsigned long) link); +diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c +index a9ba244..d9df391 100644 +--- a/fs/gfs2/inode.c ++++ b/fs/gfs2/inode.c +@@ -1496,7 +1496,7 @@ out: + + static void gfs2_put_link(struct dentry *dentry, struct nameidata *nd, void *p) + { +- char *s = nd_get_link(nd); ++ const char *s = nd_get_link(nd); + if (!IS_ERR(s)) + kfree(s); + } +diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c +index 001ef01..f7d5f07 100644 +--- a/fs/hugetlbfs/inode.c ++++ b/fs/hugetlbfs/inode.c +@@ -920,7 +920,7 @@ static struct file_system_type hugetlbfs_fs_type = { + .kill_sb = kill_litter_super, + }; + +-static struct vfsmount *hugetlbfs_vfsmount; ++struct vfsmount *hugetlbfs_vfsmount; + + static int can_do_hugetlb_shm(void) + { +diff --git a/fs/inode.c b/fs/inode.c +index 9f4f5fe..6214688 100644 +--- a/fs/inode.c ++++ b/fs/inode.c +@@ -860,8 +860,8 @@ unsigned int get_next_ino(void) + + #ifdef CONFIG_SMP + if (unlikely((res & (LAST_INO_BATCH-1)) == 0)) { +- static atomic_t shared_last_ino; +- int next = atomic_add_return(LAST_INO_BATCH, &shared_last_ino); ++ static atomic_unchecked_t shared_last_ino; ++ int next = atomic_add_return_unchecked(LAST_INO_BATCH, &shared_last_ino); + + res = next - LAST_INO_BATCH; + } +diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c +index 4a6cf28..d3a29d3 100644 +--- a/fs/jffs2/erase.c ++++ b/fs/jffs2/erase.c +@@ -452,7 +452,8 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb + struct jffs2_unknown_node marker = { + .magic = cpu_to_je16(JFFS2_MAGIC_BITMASK), + .nodetype = cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER), +- .totlen = cpu_to_je32(c->cleanmarker_size) ++ .totlen = cpu_to_je32(c->cleanmarker_size), ++ .hdr_crc = cpu_to_je32(0) + }; + + jffs2_prealloc_raw_node_refs(c, jeb, 1); +diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c +index 74d9be1..d5dd140 100644 +--- a/fs/jffs2/wbuf.c ++++ b/fs/jffs2/wbuf.c +@@ -1022,7 +1022,8 @@ static const struct jffs2_unknown_node oob_cleanmarker = + { + .magic = constant_cpu_to_je16(JFFS2_MAGIC_BITMASK), + .nodetype = constant_cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER), +- .totlen = constant_cpu_to_je32(8) ++ .totlen = constant_cpu_to_je32(8), ++ .hdr_crc = constant_cpu_to_je32(0) + }; + + /* +diff --git a/fs/jfs/super.c b/fs/jfs/super.c +index 4a82950..bcaa0cb 100644 +--- a/fs/jfs/super.c ++++ b/fs/jfs/super.c +@@ -801,7 +801,7 @@ static int __init init_jfs_fs(void) + + jfs_inode_cachep = + kmem_cache_create("jfs_ip", sizeof(struct jfs_inode_info), 0, +- SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD, ++ SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD|SLAB_USERCOPY, + init_once); + if (jfs_inode_cachep == NULL) + return -ENOMEM; +diff --git a/fs/libfs.c b/fs/libfs.c +index 18d08f5..fe3dc64 100644 +--- a/fs/libfs.c ++++ b/fs/libfs.c +@@ -165,6 +165,9 @@ int dcache_readdir(struct file * filp, void * dirent, filldir_t filldir) + + for (p=q->next; p != &dentry->d_subdirs; p=p->next) { + struct dentry *next; ++ char d_name[sizeof(next->d_iname)]; ++ const unsigned char *name; ++ + next = list_entry(p, struct dentry, d_u.d_child); + spin_lock_nested(&next->d_lock, DENTRY_D_LOCK_NESTED); + if (!simple_positive(next)) { +@@ -174,7 +177,12 @@ int dcache_readdir(struct file * filp, void * dirent, filldir_t filldir) + + spin_unlock(&next->d_lock); + spin_unlock(&dentry->d_lock); +- if (filldir(dirent, next->d_name.name, ++ name = next->d_name.name; ++ if (name == next->d_iname) { ++ memcpy(d_name, name, next->d_name.len); ++ name = d_name; ++ } ++ if (filldir(dirent, name, + next->d_name.len, filp->f_pos, + next->d_inode->i_ino, + dt_type(next->d_inode)) < 0) +diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c +index 8392cb8..80d6193 100644 +--- a/fs/lockd/clntproc.c ++++ b/fs/lockd/clntproc.c +@@ -36,11 +36,11 @@ static const struct rpc_call_ops nlmclnt_cancel_ops; + /* + * Cookie counter for NLM requests + */ +-static atomic_t nlm_cookie = ATOMIC_INIT(0x1234); ++static atomic_unchecked_t nlm_cookie = ATOMIC_INIT(0x1234); + + void nlmclnt_next_cookie(struct nlm_cookie *c) + { +- u32 cookie = atomic_inc_return(&nlm_cookie); ++ u32 cookie = atomic_inc_return_unchecked(&nlm_cookie); + + memcpy(c->data, &cookie, 4); + c->len=4; +diff --git a/fs/locks.c b/fs/locks.c +index 0d68f1f..3114738 100644 +--- a/fs/locks.c ++++ b/fs/locks.c +@@ -1465,7 +1465,7 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp) + case F_WRLCK: + return generic_add_lease(filp, arg, flp); + default: +- BUG(); ++ return -EINVAL; + } + } + EXPORT_SYMBOL(generic_setlease); +@@ -2075,16 +2075,16 @@ void locks_remove_flock(struct file *filp) + return; + + if (filp->f_op && filp->f_op->flock) { +- struct file_lock fl = { ++ struct file_lock flock = { + .fl_pid = current->tgid, + .fl_file = filp, + .fl_flags = FL_FLOCK, + .fl_type = F_UNLCK, + .fl_end = OFFSET_MAX, + }; +- filp->f_op->flock(filp, F_SETLKW, &fl); +- if (fl.fl_ops && fl.fl_ops->fl_release_private) +- fl.fl_ops->fl_release_private(&fl); ++ filp->f_op->flock(filp, F_SETLKW, &flock); ++ if (flock.fl_ops && flock.fl_ops->fl_release_private) ++ flock.fl_ops->fl_release_private(&flock); + } + + lock_flocks(); +diff --git a/fs/namei.c b/fs/namei.c +index c427919..232326c 100644 +--- a/fs/namei.c ++++ b/fs/namei.c +@@ -278,16 +278,32 @@ int generic_permission(struct inode *inode, int mask) + if (ret != -EACCES) + return ret; + ++#ifdef CONFIG_GRKERNSEC ++ /* we'll block if we have to log due to a denied capability use */ ++ if (mask & MAY_NOT_BLOCK) ++ return -ECHILD; ++#endif ++ + if (S_ISDIR(inode->i_mode)) { + /* DACs are overridable for directories */ +- if (ns_capable(inode_userns(inode), CAP_DAC_OVERRIDE)) +- return 0; + if (!(mask & MAY_WRITE)) +- if (ns_capable(inode_userns(inode), CAP_DAC_READ_SEARCH)) ++ if (ns_capable_nolog(inode_userns(inode), CAP_DAC_OVERRIDE) || ++ ns_capable(inode_userns(inode), CAP_DAC_READ_SEARCH)) + return 0; ++ if (ns_capable(inode_userns(inode), CAP_DAC_OVERRIDE)) ++ return 0; + return -EACCES; + } + /* ++ * Searching includes executable on directories, else just read. ++ */ ++ mask &= MAY_READ | MAY_WRITE | MAY_EXEC; ++ if (mask == MAY_READ) ++ if (ns_capable_nolog(inode_userns(inode), CAP_DAC_OVERRIDE) || ++ ns_capable(inode_userns(inode), CAP_DAC_READ_SEARCH)) ++ return 0; ++ ++ /* + * Read/write DACs are always overridable. + * Executable DACs are overridable when there is + * at least one exec bit set. +@@ -296,14 +312,6 @@ int generic_permission(struct inode *inode, int mask) + if (ns_capable(inode_userns(inode), CAP_DAC_OVERRIDE)) + return 0; + +- /* +- * Searching includes executable on directories, else just read. +- */ +- mask &= MAY_READ | MAY_WRITE | MAY_EXEC; +- if (mask == MAY_READ) +- if (ns_capable(inode_userns(inode), CAP_DAC_READ_SEARCH)) +- return 0; +- + return -EACCES; + } + +@@ -652,11 +660,19 @@ follow_link(struct path *link, struct nameidata *nd, void **p) + return error; + } + ++ if (gr_handle_follow_link(dentry->d_parent->d_inode, ++ dentry->d_inode, dentry, nd->path.mnt)) { ++ error = -EACCES; ++ *p = ERR_PTR(error); /* no ->put_link(), please */ ++ path_put(&nd->path); ++ return error; ++ } ++ + nd->last_type = LAST_BIND; + *p = dentry->d_inode->i_op->follow_link(dentry, nd); + error = PTR_ERR(*p); + if (!IS_ERR(*p)) { +- char *s = nd_get_link(nd); ++ const char *s = nd_get_link(nd); + error = 0; + if (s) + error = __vfs_follow_link(nd, s); +@@ -1355,6 +1371,9 @@ static inline int nested_symlink(struct path *path, struct nameidata *nd) + if (!res) + res = walk_component(nd, path, &nd->last, + nd->last_type, LOOKUP_FOLLOW); ++ if (res >= 0 && gr_handle_symlink_owner(&link, nd->inode)) { ++ res = -EACCES; ++ } + put_link(nd, &link, cookie); + } while (res > 0); + +@@ -1746,6 +1765,9 @@ static int path_lookupat(int dfd, const char *name, + err = follow_link(&link, nd, &cookie); + if (!err) + err = lookup_last(nd, &path); ++ if (!err && gr_handle_symlink_owner(&link, nd->inode)) { ++ err = -EACCES; ++ } + put_link(nd, &link, cookie); + } + } +@@ -1753,6 +1775,21 @@ static int path_lookupat(int dfd, const char *name, + if (!err) + err = complete_walk(nd); + ++ if (!(nd->flags & LOOKUP_PARENT)) { ++#ifdef CONFIG_GRKERNSEC ++ if (flags & LOOKUP_RCU) { ++ if (!err) ++ path_put(&nd->path); ++ err = -ECHILD; ++ } else ++#endif ++ if (!gr_acl_handle_hidden_file(nd->path.dentry, nd->path.mnt)) { ++ if (!err) ++ path_put(&nd->path); ++ err = -ENOENT; ++ } ++ } ++ + if (!err && nd->flags & LOOKUP_DIRECTORY) { + if (!nd->inode->i_op->lookup) { + path_put(&nd->path); +@@ -1780,6 +1817,15 @@ static int do_path_lookup(int dfd, const char *name, + retval = path_lookupat(dfd, name, flags | LOOKUP_REVAL, nd); + + if (likely(!retval)) { ++ if (*name != '/' && nd->path.dentry && nd->inode) { ++#ifdef CONFIG_GRKERNSEC ++ if (flags & LOOKUP_RCU) ++ return -ECHILD; ++#endif ++ if (!gr_chroot_fchdir(nd->path.dentry, nd->path.mnt)) ++ return -ENOENT; ++ } ++ + if (unlikely(!audit_dummy_context())) { + if (nd->path.dentry && nd->inode) + audit_inode(name, nd->path.dentry); +@@ -2126,6 +2172,13 @@ static int may_open(struct path *path, int acc_mode, int flag) + if (flag & O_NOATIME && !inode_owner_or_capable(inode)) + return -EPERM; + ++ if (gr_handle_rofs_blockwrite(dentry, path->mnt, acc_mode)) ++ return -EPERM; ++ if (gr_handle_rawio(inode)) ++ return -EPERM; ++ if (!gr_acl_handle_open(dentry, path->mnt, acc_mode)) ++ return -EACCES; ++ + return 0; + } + +@@ -2187,6 +2240,16 @@ static struct file *do_last(struct nameidata *nd, struct path *path, + error = complete_walk(nd); + if (error) + return ERR_PTR(error); ++#ifdef CONFIG_GRKERNSEC ++ if (nd->flags & LOOKUP_RCU) { ++ error = -ECHILD; ++ goto exit; ++ } ++#endif ++ if (!gr_acl_handle_hidden_file(nd->path.dentry, nd->path.mnt)) { ++ error = -ENOENT; ++ goto exit; ++ } + audit_inode(pathname, nd->path.dentry); + if (open_flag & O_CREAT) { + error = -EISDIR; +@@ -2197,6 +2260,16 @@ static struct file *do_last(struct nameidata *nd, struct path *path, + error = complete_walk(nd); + if (error) + return ERR_PTR(error); ++#ifdef CONFIG_GRKERNSEC ++ if (nd->flags & LOOKUP_RCU) { ++ error = -ECHILD; ++ goto exit; ++ } ++#endif ++ if (!gr_acl_handle_hidden_file(dir, nd->path.mnt)) { ++ error = -ENOENT; ++ goto exit; ++ } + audit_inode(pathname, dir); + goto ok; + } +@@ -2218,6 +2291,16 @@ static struct file *do_last(struct nameidata *nd, struct path *path, + error = complete_walk(nd); + if (error) + return ERR_PTR(error); ++#ifdef CONFIG_GRKERNSEC ++ if (nd->flags & LOOKUP_RCU) { ++ error = -ECHILD; ++ goto exit; ++ } ++#endif ++ if (!gr_acl_handle_hidden_file(nd->path.dentry, nd->path.mnt)) { ++ error = -ENOENT; ++ goto exit; ++ } + + error = -ENOTDIR; + if (nd->flags & LOOKUP_DIRECTORY) { +@@ -2258,6 +2341,12 @@ static struct file *do_last(struct nameidata *nd, struct path *path, + /* Negative dentry, just create the file */ + if (!dentry->d_inode) { + umode_t mode = op->mode; ++ ++ if (!gr_acl_handle_creat(path->dentry, nd->path.dentry, path->mnt, open_flag, acc_mode, mode)) { ++ error = -EACCES; ++ goto exit_mutex_unlock; ++ } ++ + if (!IS_POSIXACL(dir->d_inode)) + mode &= ~current_umask(); + /* +@@ -2281,6 +2370,8 @@ static struct file *do_last(struct nameidata *nd, struct path *path, + error = vfs_create(dir->d_inode, dentry, mode, nd); + if (error) + goto exit_mutex_unlock; ++ else ++ gr_handle_create(path->dentry, path->mnt); + mutex_unlock(&dir->d_inode->i_mutex); + dput(nd->path.dentry); + nd->path.dentry = dentry; +@@ -2290,6 +2381,19 @@ static struct file *do_last(struct nameidata *nd, struct path *path, + /* + * It already exists. + */ ++ ++ if (!gr_acl_handle_hidden_file(dentry, nd->path.mnt)) { ++ error = -ENOENT; ++ goto exit_mutex_unlock; ++ } ++ ++ /* only check if O_CREAT is specified, all other checks need to go ++ into may_open */ ++ if (gr_handle_fifo(path->dentry, path->mnt, dir, open_flag, acc_mode)) { ++ error = -EACCES; ++ goto exit_mutex_unlock; ++ } ++ + mutex_unlock(&dir->d_inode->i_mutex); + audit_inode(pathname, path->dentry); + +@@ -2407,8 +2511,14 @@ static struct file *path_openat(int dfd, const char *pathname, + error = follow_link(&link, nd, &cookie); + if (unlikely(error)) + filp = ERR_PTR(error); +- else ++ else { + filp = do_last(nd, &path, op, pathname); ++ if (!IS_ERR(filp) && gr_handle_symlink_owner(&link, nd->inode)) { ++ if (filp) ++ fput(filp); ++ filp = ERR_PTR(-EACCES); ++ } ++ } + put_link(nd, &link, cookie); + } + out: +@@ -2502,6 +2612,11 @@ struct dentry *kern_path_create(int dfd, const char *pathname, struct path *path + *path = nd.path; + return dentry; + eexist: ++ if (!gr_acl_handle_hidden_file(dentry, nd.path.mnt)) { ++ dput(dentry); ++ dentry = ERR_PTR(-ENOENT); ++ goto fail; ++ } + dput(dentry); + dentry = ERR_PTR(-EEXIST); + fail: +@@ -2524,6 +2639,20 @@ struct dentry *user_path_create(int dfd, const char __user *pathname, struct pat + } + EXPORT_SYMBOL(user_path_create); + ++static struct dentry *user_path_create_with_name(int dfd, const char __user *pathname, struct path *path, char **to, int is_dir) ++{ ++ char *tmp = getname(pathname); ++ struct dentry *res; ++ if (IS_ERR(tmp)) ++ return ERR_CAST(tmp); ++ res = kern_path_create(dfd, tmp, path, is_dir); ++ if (IS_ERR(res)) ++ putname(tmp); ++ else ++ *to = tmp; ++ return res; ++} ++ + int vfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) + { + int error = may_create(dir, dentry); +@@ -2591,6 +2720,17 @@ SYSCALL_DEFINE4(mknodat, int, dfd, const char __user *, filename, umode_t, mode, + error = mnt_want_write(path.mnt); + if (error) + goto out_dput; ++ ++ if (gr_handle_chroot_mknod(dentry, path.mnt, mode)) { ++ error = -EPERM; ++ goto out_drop_write; ++ } ++ ++ if (!gr_acl_handle_mknod(dentry, path.dentry, path.mnt, mode)) { ++ error = -EACCES; ++ goto out_drop_write; ++ } ++ + error = security_path_mknod(&path, dentry, mode, dev); + if (error) + goto out_drop_write; +@@ -2608,6 +2748,9 @@ SYSCALL_DEFINE4(mknodat, int, dfd, const char __user *, filename, umode_t, mode, + } + out_drop_write: + mnt_drop_write(path.mnt); ++ ++ if (!error) ++ gr_handle_create(dentry, path.mnt); + out_dput: + dput(dentry); + mutex_unlock(&path.dentry->d_inode->i_mutex); +@@ -2661,12 +2804,21 @@ SYSCALL_DEFINE3(mkdirat, int, dfd, const char __user *, pathname, umode_t, mode) + error = mnt_want_write(path.mnt); + if (error) + goto out_dput; ++ ++ if (!gr_acl_handle_mkdir(dentry, path.dentry, path.mnt)) { ++ error = -EACCES; ++ goto out_drop_write; ++ } ++ + error = security_path_mkdir(&path, dentry, mode); + if (error) + goto out_drop_write; + error = vfs_mkdir(path.dentry->d_inode, dentry, mode); + out_drop_write: + mnt_drop_write(path.mnt); ++ ++ if (!error) ++ gr_handle_create(dentry, path.mnt); + out_dput: + dput(dentry); + mutex_unlock(&path.dentry->d_inode->i_mutex); +@@ -2746,6 +2898,8 @@ static long do_rmdir(int dfd, const char __user *pathname) + char * name; + struct dentry *dentry; + struct nameidata nd; ++ ino_t saved_ino = 0; ++ dev_t saved_dev = 0; + + error = user_path_parent(dfd, pathname, &nd, &name); + if (error) +@@ -2774,6 +2928,15 @@ static long do_rmdir(int dfd, const char __user *pathname) + error = -ENOENT; + goto exit3; + } ++ ++ saved_ino = dentry->d_inode->i_ino; ++ saved_dev = gr_get_dev_from_dentry(dentry); ++ ++ if (!gr_acl_handle_rmdir(dentry, nd.path.mnt)) { ++ error = -EACCES; ++ goto exit3; ++ } ++ + error = mnt_want_write(nd.path.mnt); + if (error) + goto exit3; +@@ -2781,6 +2944,8 @@ static long do_rmdir(int dfd, const char __user *pathname) + if (error) + goto exit4; + error = vfs_rmdir(nd.path.dentry->d_inode, dentry); ++ if (!error && (saved_dev || saved_ino)) ++ gr_handle_delete(saved_ino, saved_dev); + exit4: + mnt_drop_write(nd.path.mnt); + exit3: +@@ -2843,6 +3008,8 @@ static long do_unlinkat(int dfd, const char __user *pathname) + struct dentry *dentry; + struct nameidata nd; + struct inode *inode = NULL; ++ ino_t saved_ino = 0; ++ dev_t saved_dev = 0; + + error = user_path_parent(dfd, pathname, &nd, &name); + if (error) +@@ -2865,6 +3032,16 @@ static long do_unlinkat(int dfd, const char __user *pathname) + if (!inode) + goto slashes; + ihold(inode); ++ ++ if (inode->i_nlink <= 1) { ++ saved_ino = inode->i_ino; ++ saved_dev = gr_get_dev_from_dentry(dentry); ++ } ++ if (!gr_acl_handle_unlink(dentry, nd.path.mnt)) { ++ error = -EACCES; ++ goto exit2; ++ } ++ + error = mnt_want_write(nd.path.mnt); + if (error) + goto exit2; +@@ -2872,6 +3049,8 @@ static long do_unlinkat(int dfd, const char __user *pathname) + if (error) + goto exit3; + error = vfs_unlink(nd.path.dentry->d_inode, dentry); ++ if (!error && (saved_ino || saved_dev)) ++ gr_handle_delete(saved_ino, saved_dev); + exit3: + mnt_drop_write(nd.path.mnt); + exit2: +@@ -2947,10 +3126,18 @@ SYSCALL_DEFINE3(symlinkat, const char __user *, oldname, + error = mnt_want_write(path.mnt); + if (error) + goto out_dput; ++ ++ if (!gr_acl_handle_symlink(dentry, path.dentry, path.mnt, from)) { ++ error = -EACCES; ++ goto out_drop_write; ++ } ++ + error = security_path_symlink(&path, dentry, from); + if (error) + goto out_drop_write; + error = vfs_symlink(path.dentry->d_inode, dentry, from); ++ if (!error) ++ gr_handle_create(dentry, path.mnt); + out_drop_write: + mnt_drop_write(path.mnt); + out_dput: +@@ -3025,6 +3212,7 @@ SYSCALL_DEFINE5(linkat, int, olddfd, const char __user *, oldname, + { + struct dentry *new_dentry; + struct path old_path, new_path; ++ char *to = NULL; + int how = 0; + int error; + +@@ -3048,7 +3236,7 @@ SYSCALL_DEFINE5(linkat, int, olddfd, const char __user *, oldname, + if (error) + return error; + +- new_dentry = user_path_create(newdfd, newname, &new_path, 0); ++ new_dentry = user_path_create_with_name(newdfd, newname, &new_path, &to, 0); + error = PTR_ERR(new_dentry); + if (IS_ERR(new_dentry)) + goto out; +@@ -3059,13 +3247,30 @@ SYSCALL_DEFINE5(linkat, int, olddfd, const char __user *, oldname, + error = mnt_want_write(new_path.mnt); + if (error) + goto out_dput; ++ ++ if (gr_handle_hardlink(old_path.dentry, old_path.mnt, ++ old_path.dentry->d_inode, ++ old_path.dentry->d_inode->i_mode, to)) { ++ error = -EACCES; ++ goto out_drop_write; ++ } ++ ++ if (!gr_acl_handle_link(new_dentry, new_path.dentry, new_path.mnt, ++ old_path.dentry, old_path.mnt, to)) { ++ error = -EACCES; ++ goto out_drop_write; ++ } ++ + error = security_path_link(old_path.dentry, &new_path, new_dentry); + if (error) + goto out_drop_write; + error = vfs_link(old_path.dentry, new_path.dentry->d_inode, new_dentry); ++ if (!error) ++ gr_handle_create(new_dentry, new_path.mnt); + out_drop_write: + mnt_drop_write(new_path.mnt); + out_dput: ++ putname(to); + dput(new_dentry); + mutex_unlock(&new_path.dentry->d_inode->i_mutex); + path_put(&new_path); +@@ -3299,6 +3504,12 @@ SYSCALL_DEFINE4(renameat, int, olddfd, const char __user *, oldname, + if (new_dentry == trap) + goto exit5; + ++ error = gr_acl_handle_rename(new_dentry, new_dir, newnd.path.mnt, ++ old_dentry, old_dir->d_inode, oldnd.path.mnt, ++ to); ++ if (error) ++ goto exit5; ++ + error = mnt_want_write(oldnd.path.mnt); + if (error) + goto exit5; +@@ -3308,6 +3519,9 @@ SYSCALL_DEFINE4(renameat, int, olddfd, const char __user *, oldname, + goto exit6; + error = vfs_rename(old_dir->d_inode, old_dentry, + new_dir->d_inode, new_dentry); ++ if (!error) ++ gr_handle_rename(old_dir->d_inode, new_dir->d_inode, old_dentry, ++ new_dentry, oldnd.path.mnt, new_dentry->d_inode ? 1 : 0); + exit6: + mnt_drop_write(oldnd.path.mnt); + exit5: +@@ -3333,6 +3547,8 @@ SYSCALL_DEFINE2(rename, const char __user *, oldname, const char __user *, newna + + int vfs_readlink(struct dentry *dentry, char __user *buffer, int buflen, const char *link) + { ++ char tmpbuf[64]; ++ const char *newlink; + int len; + + len = PTR_ERR(link); +@@ -3342,7 +3558,14 @@ int vfs_readlink(struct dentry *dentry, char __user *buffer, int buflen, const c + len = strlen(link); + if (len > (unsigned) buflen) + len = buflen; +- if (copy_to_user(buffer, link, len)) ++ ++ if (len < sizeof(tmpbuf)) { ++ memcpy(tmpbuf, link, len); ++ newlink = tmpbuf; ++ } else ++ newlink = link; ++ ++ if (copy_to_user(buffer, newlink, len)) + len = -EFAULT; + out: + return len; +diff --git a/fs/namespace.c b/fs/namespace.c +index 4e46539..b28253c 100644 +--- a/fs/namespace.c ++++ b/fs/namespace.c +@@ -1156,6 +1156,9 @@ static int do_umount(struct mount *mnt, int flags) + if (!(sb->s_flags & MS_RDONLY)) + retval = do_remount_sb(sb, MS_RDONLY, NULL, 0); + up_write(&sb->s_umount); ++ ++ gr_log_remount(mnt->mnt_devname, retval); ++ + return retval; + } + +@@ -1175,6 +1178,9 @@ static int do_umount(struct mount *mnt, int flags) + br_write_unlock(vfsmount_lock); + up_write(&namespace_sem); + release_mounts(&umount_list); ++ ++ gr_log_unmount(mnt->mnt_devname, retval); ++ + return retval; + } + +@@ -2176,6 +2182,16 @@ long do_mount(char *dev_name, char *dir_name, char *type_page, + MS_NOATIME | MS_NODIRATIME | MS_RELATIME| MS_KERNMOUNT | + MS_STRICTATIME); + ++ if (gr_handle_rofs_mount(path.dentry, path.mnt, mnt_flags)) { ++ retval = -EPERM; ++ goto dput_out; ++ } ++ ++ if (gr_handle_chroot_mount(path.dentry, path.mnt, dev_name)) { ++ retval = -EPERM; ++ goto dput_out; ++ } ++ + if (flags & MS_REMOUNT) + retval = do_remount(&path, flags & ~MS_REMOUNT, mnt_flags, + data_page); +@@ -2190,6 +2206,9 @@ long do_mount(char *dev_name, char *dir_name, char *type_page, + dev_name, data_page); + dput_out: + path_put(&path); ++ ++ gr_log_mount(dev_name, dir_name, retval); ++ + return retval; + } + +@@ -2471,6 +2490,11 @@ SYSCALL_DEFINE2(pivot_root, const char __user *, new_root, + if (error) + goto out2; + ++ if (gr_handle_chroot_pivot()) { ++ error = -EPERM; ++ goto out2; ++ } ++ + get_fs_root(current->fs, &root); + error = lock_mount(&old); + if (error) +diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c +index e8bbfa5..864f936 100644 +--- a/fs/nfs/inode.c ++++ b/fs/nfs/inode.c +@@ -152,7 +152,7 @@ static void nfs_zap_caches_locked(struct inode *inode) + nfsi->attrtimeo = NFS_MINATTRTIMEO(inode); + nfsi->attrtimeo_timestamp = jiffies; + +- memset(NFS_COOKIEVERF(inode), 0, sizeof(NFS_COOKIEVERF(inode))); ++ memset(NFS_COOKIEVERF(inode), 0, sizeof(NFS_I(inode)->cookieverf)); + if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)) + nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE; + else +@@ -1005,16 +1005,16 @@ static int nfs_size_need_update(const struct inode *inode, const struct nfs_fatt + return nfs_size_to_loff_t(fattr->size) > i_size_read(inode); + } + +-static atomic_long_t nfs_attr_generation_counter; ++static atomic_long_unchecked_t nfs_attr_generation_counter; + + static unsigned long nfs_read_attr_generation_counter(void) + { +- return atomic_long_read(&nfs_attr_generation_counter); ++ return atomic_long_read_unchecked(&nfs_attr_generation_counter); + } + + unsigned long nfs_inc_attr_generation_counter(void) + { +- return atomic_long_inc_return(&nfs_attr_generation_counter); ++ return atomic_long_inc_return_unchecked(&nfs_attr_generation_counter); + } + + void nfs_fattr_init(struct nfs_fattr *fattr) +diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c +index 5686661..80a9a3a 100644 +--- a/fs/nfsd/vfs.c ++++ b/fs/nfsd/vfs.c +@@ -933,7 +933,7 @@ nfsd_vfs_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file, + } else { + oldfs = get_fs(); + set_fs(KERNEL_DS); +- host_err = vfs_readv(file, (struct iovec __user *)vec, vlen, &offset); ++ host_err = vfs_readv(file, (struct iovec __force_user *)vec, vlen, &offset); + set_fs(oldfs); + } + +@@ -1037,7 +1037,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file, + + /* Write the data. */ + oldfs = get_fs(); set_fs(KERNEL_DS); +- host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &offset); ++ host_err = vfs_writev(file, (struct iovec __force_user *)vec, vlen, &offset); + set_fs(oldfs); + if (host_err < 0) + goto out_nfserr; +@@ -1573,7 +1573,7 @@ nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp) + */ + + oldfs = get_fs(); set_fs(KERNEL_DS); +- host_err = inode->i_op->readlink(path.dentry, buf, *lenp); ++ host_err = inode->i_op->readlink(path.dentry, (char __force_user *)buf, *lenp); + set_fs(oldfs); + + if (host_err < 0) +diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c +index 3568c8a..e0240d8 100644 +--- a/fs/notify/fanotify/fanotify_user.c ++++ b/fs/notify/fanotify/fanotify_user.c +@@ -278,7 +278,8 @@ static ssize_t copy_event_to_user(struct fsnotify_group *group, + goto out_close_fd; + + ret = -EFAULT; +- if (copy_to_user(buf, &fanotify_event_metadata, ++ if (fanotify_event_metadata.event_len > sizeof fanotify_event_metadata || ++ copy_to_user(buf, &fanotify_event_metadata, + fanotify_event_metadata.event_len)) + goto out_kill_access_response; + +diff --git a/fs/notify/notification.c b/fs/notify/notification.c +index c887b13..0fdf472 100644 +--- a/fs/notify/notification.c ++++ b/fs/notify/notification.c +@@ -57,7 +57,7 @@ static struct kmem_cache *fsnotify_event_holder_cachep; + * get set to 0 so it will never get 'freed' + */ + static struct fsnotify_event *q_overflow_event; +-static atomic_t fsnotify_sync_cookie = ATOMIC_INIT(0); ++static atomic_unchecked_t fsnotify_sync_cookie = ATOMIC_INIT(0); + + /** + * fsnotify_get_cookie - return a unique cookie for use in synchronizing events. +@@ -65,7 +65,7 @@ static atomic_t fsnotify_sync_cookie = ATOMIC_INIT(0); + */ + u32 fsnotify_get_cookie(void) + { +- return atomic_inc_return(&fsnotify_sync_cookie); ++ return atomic_inc_return_unchecked(&fsnotify_sync_cookie); + } + EXPORT_SYMBOL_GPL(fsnotify_get_cookie); + +diff --git a/fs/ntfs/dir.c b/fs/ntfs/dir.c +index 99e3610..02c1068 100644 +--- a/fs/ntfs/dir.c ++++ b/fs/ntfs/dir.c +@@ -1329,7 +1329,7 @@ find_next_index_buffer: + ia = (INDEX_ALLOCATION*)(kaddr + (ia_pos & ~PAGE_CACHE_MASK & + ~(s64)(ndir->itype.index.block_size - 1))); + /* Bounds checks. */ +- if (unlikely((u8*)ia < kaddr || (u8*)ia > kaddr + PAGE_CACHE_SIZE)) { ++ if (unlikely(!kaddr || (u8*)ia < kaddr || (u8*)ia > kaddr + PAGE_CACHE_SIZE)) { + ntfs_error(sb, "Out of bounds check failed. Corrupt directory " + "inode 0x%lx or driver bug.", vdir->i_ino); + goto err_out; +diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c +index 8639169..76697aa 100644 +--- a/fs/ntfs/file.c ++++ b/fs/ntfs/file.c +@@ -2229,6 +2229,6 @@ const struct inode_operations ntfs_file_inode_ops = { + #endif /* NTFS_RW */ + }; + +-const struct file_operations ntfs_empty_file_ops = {}; ++const struct file_operations ntfs_empty_file_ops __read_only; + +-const struct inode_operations ntfs_empty_inode_ops = {}; ++const struct inode_operations ntfs_empty_inode_ops __read_only; +diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c +index 210c352..a174f83 100644 +--- a/fs/ocfs2/localalloc.c ++++ b/fs/ocfs2/localalloc.c +@@ -1283,7 +1283,7 @@ static int ocfs2_local_alloc_slide_window(struct ocfs2_super *osb, + goto bail; + } + +- atomic_inc(&osb->alloc_stats.moves); ++ atomic_inc_unchecked(&osb->alloc_stats.moves); + + bail: + if (handle) +diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h +index d355e6e..578d905 100644 +--- a/fs/ocfs2/ocfs2.h ++++ b/fs/ocfs2/ocfs2.h +@@ -235,11 +235,11 @@ enum ocfs2_vol_state + + struct ocfs2_alloc_stats + { +- atomic_t moves; +- atomic_t local_data; +- atomic_t bitmap_data; +- atomic_t bg_allocs; +- atomic_t bg_extends; ++ atomic_unchecked_t moves; ++ atomic_unchecked_t local_data; ++ atomic_unchecked_t bitmap_data; ++ atomic_unchecked_t bg_allocs; ++ atomic_unchecked_t bg_extends; + }; + + enum ocfs2_local_alloc_state +diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c +index f169da4..9112253 100644 +--- a/fs/ocfs2/suballoc.c ++++ b/fs/ocfs2/suballoc.c +@@ -872,7 +872,7 @@ static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb, + mlog_errno(status); + goto bail; + } +- atomic_inc(&osb->alloc_stats.bg_extends); ++ atomic_inc_unchecked(&osb->alloc_stats.bg_extends); + + /* You should never ask for this much metadata */ + BUG_ON(bits_wanted > +@@ -2008,7 +2008,7 @@ int ocfs2_claim_metadata(handle_t *handle, + mlog_errno(status); + goto bail; + } +- atomic_inc(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs); ++ atomic_inc_unchecked(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs); + + *suballoc_loc = res.sr_bg_blkno; + *suballoc_bit_start = res.sr_bit_offset; +@@ -2172,7 +2172,7 @@ int ocfs2_claim_new_inode_at_loc(handle_t *handle, + trace_ocfs2_claim_new_inode_at_loc((unsigned long long)di_blkno, + res->sr_bits); + +- atomic_inc(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs); ++ atomic_inc_unchecked(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs); + + BUG_ON(res->sr_bits != 1); + +@@ -2214,7 +2214,7 @@ int ocfs2_claim_new_inode(handle_t *handle, + mlog_errno(status); + goto bail; + } +- atomic_inc(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs); ++ atomic_inc_unchecked(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs); + + BUG_ON(res.sr_bits != 1); + +@@ -2318,7 +2318,7 @@ int __ocfs2_claim_clusters(handle_t *handle, + cluster_start, + num_clusters); + if (!status) +- atomic_inc(&osb->alloc_stats.local_data); ++ atomic_inc_unchecked(&osb->alloc_stats.local_data); + } else { + if (min_clusters > (osb->bitmap_cpg - 1)) { + /* The only paths asking for contiguousness +@@ -2344,7 +2344,7 @@ int __ocfs2_claim_clusters(handle_t *handle, + ocfs2_desc_bitmap_to_cluster_off(ac->ac_inode, + res.sr_bg_blkno, + res.sr_bit_offset); +- atomic_inc(&osb->alloc_stats.bitmap_data); ++ atomic_inc_unchecked(&osb->alloc_stats.bitmap_data); + *num_clusters = res.sr_bits; + } + } +diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c +index 68f4541..89cfe6a 100644 +--- a/fs/ocfs2/super.c ++++ b/fs/ocfs2/super.c +@@ -301,11 +301,11 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len) + "%10s => GlobalAllocs: %d LocalAllocs: %d " + "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n", + "Stats", +- atomic_read(&osb->alloc_stats.bitmap_data), +- atomic_read(&osb->alloc_stats.local_data), +- atomic_read(&osb->alloc_stats.bg_allocs), +- atomic_read(&osb->alloc_stats.moves), +- atomic_read(&osb->alloc_stats.bg_extends)); ++ atomic_read_unchecked(&osb->alloc_stats.bitmap_data), ++ atomic_read_unchecked(&osb->alloc_stats.local_data), ++ atomic_read_unchecked(&osb->alloc_stats.bg_allocs), ++ atomic_read_unchecked(&osb->alloc_stats.moves), ++ atomic_read_unchecked(&osb->alloc_stats.bg_extends)); + + out += snprintf(buf + out, len - out, + "%10s => State: %u Descriptor: %llu Size: %u bits " +@@ -2116,11 +2116,11 @@ static int ocfs2_initialize_super(struct super_block *sb, + spin_lock_init(&osb->osb_xattr_lock); + ocfs2_init_steal_slots(osb); + +- atomic_set(&osb->alloc_stats.moves, 0); +- atomic_set(&osb->alloc_stats.local_data, 0); +- atomic_set(&osb->alloc_stats.bitmap_data, 0); +- atomic_set(&osb->alloc_stats.bg_allocs, 0); +- atomic_set(&osb->alloc_stats.bg_extends, 0); ++ atomic_set_unchecked(&osb->alloc_stats.moves, 0); ++ atomic_set_unchecked(&osb->alloc_stats.local_data, 0); ++ atomic_set_unchecked(&osb->alloc_stats.bitmap_data, 0); ++ atomic_set_unchecked(&osb->alloc_stats.bg_allocs, 0); ++ atomic_set_unchecked(&osb->alloc_stats.bg_extends, 0); + + /* Copy the blockcheck stats from the superblock probe */ + osb->osb_ecc_stats = *stats; +diff --git a/fs/ocfs2/symlink.c b/fs/ocfs2/symlink.c +index 5d22872..523db20 100644 +--- a/fs/ocfs2/symlink.c ++++ b/fs/ocfs2/symlink.c +@@ -142,7 +142,7 @@ bail: + + static void ocfs2_fast_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie) + { +- char *link = nd_get_link(nd); ++ const char *link = nd_get_link(nd); + if (!IS_ERR(link)) + kfree(link); + } +diff --git a/fs/open.c b/fs/open.c +index 3f1108b..822d7f7 100644 +--- a/fs/open.c ++++ b/fs/open.c +@@ -31,6 +31,8 @@ + #include <linux/ima.h> + #include <linux/dnotify.h> + ++#define CREATE_TRACE_POINTS ++#include <trace/events/fs.h> + #include "internal.h" + + int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs, +@@ -112,6 +114,10 @@ static long do_sys_truncate(const char __user *pathname, loff_t length) + error = locks_verify_truncate(inode, NULL, length); + if (!error) + error = security_path_truncate(&path); ++ ++ if (!error && !gr_acl_handle_truncate(path.dentry, path.mnt)) ++ error = -EACCES; ++ + if (!error) + error = do_truncate(path.dentry, length, 0, NULL); + +@@ -358,6 +364,9 @@ SYSCALL_DEFINE3(faccessat, int, dfd, const char __user *, filename, int, mode) + if (__mnt_is_readonly(path.mnt)) + res = -EROFS; + ++ if (!res && !gr_acl_handle_access(path.dentry, path.mnt, mode)) ++ res = -EACCES; ++ + out_path_release: + path_put(&path); + out: +@@ -384,6 +393,8 @@ SYSCALL_DEFINE1(chdir, const char __user *, filename) + if (error) + goto dput_and_out; + ++ gr_log_chdir(path.dentry, path.mnt); ++ + set_fs_pwd(current->fs, &path); + + dput_and_out: +@@ -410,6 +421,13 @@ SYSCALL_DEFINE1(fchdir, unsigned int, fd) + goto out_putf; + + error = inode_permission(inode, MAY_EXEC | MAY_CHDIR); ++ ++ if (!error && !gr_chroot_fchdir(file->f_path.dentry, file->f_path.mnt)) ++ error = -EPERM; ++ ++ if (!error) ++ gr_log_chdir(file->f_path.dentry, file->f_path.mnt); ++ + if (!error) + set_fs_pwd(current->fs, &file->f_path); + out_putf: +@@ -438,7 +456,13 @@ SYSCALL_DEFINE1(chroot, const char __user *, filename) + if (error) + goto dput_and_out; + ++ if (gr_handle_chroot_chroot(path.dentry, path.mnt)) ++ goto dput_and_out; ++ + set_fs_root(current->fs, &path); ++ ++ gr_handle_chroot_chdir(&path); ++ + error = 0; + dput_and_out: + path_put(&path); +@@ -456,6 +480,16 @@ static int chmod_common(struct path *path, umode_t mode) + if (error) + return error; + mutex_lock(&inode->i_mutex); ++ ++ if (!gr_acl_handle_chmod(path->dentry, path->mnt, &mode)) { ++ error = -EACCES; ++ goto out_unlock; ++ } ++ if (gr_handle_chroot_chmod(path->dentry, path->mnt, mode)) { ++ error = -EACCES; ++ goto out_unlock; ++ } ++ + error = security_path_chmod(path, mode); + if (error) + goto out_unlock; +@@ -506,6 +540,9 @@ static int chown_common(struct path *path, uid_t user, gid_t group) + int error; + struct iattr newattrs; + ++ if (!gr_acl_handle_chown(path->dentry, path->mnt)) ++ return -EACCES; ++ + newattrs.ia_valid = ATTR_CTIME; + if (user != (uid_t) -1) { + newattrs.ia_valid |= ATTR_UID; +@@ -987,6 +1024,7 @@ long do_sys_open(int dfd, const char __user *filename, int flags, umode_t mode) + } else { + fsnotify_open(f); + fd_install(fd, f); ++ trace_do_sys_open(tmp, flags, mode); + } + } + putname(tmp); +diff --git a/fs/pipe.c b/fs/pipe.c +index fec5e4a..f4210f9 100644 +--- a/fs/pipe.c ++++ b/fs/pipe.c +@@ -438,9 +438,9 @@ redo: + } + if (bufs) /* More to do? */ + continue; +- if (!pipe->writers) ++ if (!atomic_read(&pipe->writers)) + break; +- if (!pipe->waiting_writers) { ++ if (!atomic_read(&pipe->waiting_writers)) { + /* syscall merging: Usually we must not sleep + * if O_NONBLOCK is set, or if we got some data. + * But if a writer sleeps in kernel space, then +@@ -504,7 +504,7 @@ pipe_write(struct kiocb *iocb, const struct iovec *_iov, + mutex_lock(&inode->i_mutex); + pipe = inode->i_pipe; + +- if (!pipe->readers) { ++ if (!atomic_read(&pipe->readers)) { + send_sig(SIGPIPE, current, 0); + ret = -EPIPE; + goto out; +@@ -553,7 +553,7 @@ redo1: + for (;;) { + int bufs; + +- if (!pipe->readers) { ++ if (!atomic_read(&pipe->readers)) { + send_sig(SIGPIPE, current, 0); + if (!ret) + ret = -EPIPE; +@@ -644,9 +644,9 @@ redo2: + kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN); + do_wakeup = 0; + } +- pipe->waiting_writers++; ++ atomic_inc(&pipe->waiting_writers); + pipe_wait(pipe); +- pipe->waiting_writers--; ++ atomic_dec(&pipe->waiting_writers); + } + out: + mutex_unlock(&inode->i_mutex); +@@ -713,7 +713,7 @@ pipe_poll(struct file *filp, poll_table *wait) + mask = 0; + if (filp->f_mode & FMODE_READ) { + mask = (nrbufs > 0) ? POLLIN | POLLRDNORM : 0; +- if (!pipe->writers && filp->f_version != pipe->w_counter) ++ if (!atomic_read(&pipe->writers) && filp->f_version != pipe->w_counter) + mask |= POLLHUP; + } + +@@ -723,7 +723,7 @@ pipe_poll(struct file *filp, poll_table *wait) + * Most Unices do not set POLLERR for FIFOs but on Linux they + * behave exactly like pipes for poll(). + */ +- if (!pipe->readers) ++ if (!atomic_read(&pipe->readers)) + mask |= POLLERR; + } + +@@ -737,10 +737,10 @@ pipe_release(struct inode *inode, int decr, int decw) + + mutex_lock(&inode->i_mutex); + pipe = inode->i_pipe; +- pipe->readers -= decr; +- pipe->writers -= decw; ++ atomic_sub(decr, &pipe->readers); ++ atomic_sub(decw, &pipe->writers); + +- if (!pipe->readers && !pipe->writers) { ++ if (!atomic_read(&pipe->readers) && !atomic_read(&pipe->writers)) { + free_pipe_info(inode); + } else { + wake_up_interruptible_sync_poll(&pipe->wait, POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM | POLLERR | POLLHUP); +@@ -830,7 +830,7 @@ pipe_read_open(struct inode *inode, struct file *filp) + + if (inode->i_pipe) { + ret = 0; +- inode->i_pipe->readers++; ++ atomic_inc(&inode->i_pipe->readers); + } + + mutex_unlock(&inode->i_mutex); +@@ -847,7 +847,7 @@ pipe_write_open(struct inode *inode, struct file *filp) + + if (inode->i_pipe) { + ret = 0; +- inode->i_pipe->writers++; ++ atomic_inc(&inode->i_pipe->writers); + } + + mutex_unlock(&inode->i_mutex); +@@ -865,9 +865,9 @@ pipe_rdwr_open(struct inode *inode, struct file *filp) + if (inode->i_pipe) { + ret = 0; + if (filp->f_mode & FMODE_READ) +- inode->i_pipe->readers++; ++ atomic_inc(&inode->i_pipe->readers); + if (filp->f_mode & FMODE_WRITE) +- inode->i_pipe->writers++; ++ atomic_inc(&inode->i_pipe->writers); + } + + mutex_unlock(&inode->i_mutex); +@@ -959,7 +959,7 @@ void free_pipe_info(struct inode *inode) + inode->i_pipe = NULL; + } + +-static struct vfsmount *pipe_mnt __read_mostly; ++struct vfsmount *pipe_mnt __read_mostly; + + /* + * pipefs_dname() is called from d_path(). +@@ -989,7 +989,8 @@ static struct inode * get_pipe_inode(void) + goto fail_iput; + inode->i_pipe = pipe; + +- pipe->readers = pipe->writers = 1; ++ atomic_set(&pipe->readers, 1); ++ atomic_set(&pipe->writers, 1); + inode->i_fop = &rdwr_pipefifo_fops; + + /* +diff --git a/fs/proc/Kconfig b/fs/proc/Kconfig +index 15af622..0e9f4467 100644 +--- a/fs/proc/Kconfig ++++ b/fs/proc/Kconfig +@@ -30,12 +30,12 @@ config PROC_FS + + config PROC_KCORE + bool "/proc/kcore support" if !ARM +- depends on PROC_FS && MMU ++ depends on PROC_FS && MMU && !GRKERNSEC_PROC_ADD + + config PROC_VMCORE + bool "/proc/vmcore support" +- depends on PROC_FS && CRASH_DUMP +- default y ++ depends on PROC_FS && CRASH_DUMP && !GRKERNSEC ++ default n + help + Exports the dump image of crashed kernel in ELF format. + +@@ -59,8 +59,8 @@ config PROC_SYSCTL + limited in memory. + + config PROC_PAGE_MONITOR +- default y +- depends on PROC_FS && MMU ++ default n ++ depends on PROC_FS && MMU && !GRKERNSEC + bool "Enable /proc page monitoring" if EXPERT + help + Various /proc files exist to monitor process memory utilization: +diff --git a/fs/proc/array.c b/fs/proc/array.c +index f9bd395..acb7847 100644 +--- a/fs/proc/array.c ++++ b/fs/proc/array.c +@@ -60,6 +60,7 @@ + #include <linux/tty.h> + #include <linux/string.h> + #include <linux/mman.h> ++#include <linux/grsecurity.h> + #include <linux/proc_fs.h> + #include <linux/ioport.h> + #include <linux/uaccess.h> +@@ -337,6 +338,21 @@ static void task_cpus_allowed(struct seq_file *m, struct task_struct *task) + seq_putc(m, '\n'); + } + ++#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR) ++static inline void task_pax(struct seq_file *m, struct task_struct *p) ++{ ++ if (p->mm) ++ seq_printf(m, "PaX:\t%c%c%c%c%c\n", ++ p->mm->pax_flags & MF_PAX_PAGEEXEC ? 'P' : 'p', ++ p->mm->pax_flags & MF_PAX_EMUTRAMP ? 'E' : 'e', ++ p->mm->pax_flags & MF_PAX_MPROTECT ? 'M' : 'm', ++ p->mm->pax_flags & MF_PAX_RANDMMAP ? 'R' : 'r', ++ p->mm->pax_flags & MF_PAX_SEGMEXEC ? 'S' : 's'); ++ else ++ seq_printf(m, "PaX:\t-----\n"); ++} ++#endif ++ + int proc_pid_status(struct seq_file *m, struct pid_namespace *ns, + struct pid *pid, struct task_struct *task) + { +@@ -354,9 +370,24 @@ int proc_pid_status(struct seq_file *m, struct pid_namespace *ns, + task_cpus_allowed(m, task); + cpuset_task_status_allowed(m, task); + task_context_switch_counts(m, task); ++ ++#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR) ++ task_pax(m, task); ++#endif ++ ++#if defined(CONFIG_GRKERNSEC) && !defined(CONFIG_GRKERNSEC_NO_RBAC) ++ task_grsec_rbac(m, task); ++#endif ++ + return 0; + } + ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++#define PAX_RAND_FLAGS(_mm) (_mm != NULL && _mm != current->mm && \ ++ (_mm->pax_flags & MF_PAX_RANDMMAP || \ ++ _mm->pax_flags & MF_PAX_SEGMEXEC)) ++#endif ++ + static int do_task_stat(struct seq_file *m, struct pid_namespace *ns, + struct pid *pid, struct task_struct *task, int whole) + { +@@ -378,6 +409,13 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns, + char tcomm[sizeof(task->comm)]; + unsigned long flags; + ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ if (current->exec_id != m->exec_id) { ++ gr_log_badprocpid("stat"); ++ return 0; ++ } ++#endif ++ + state = *get_task_state(task); + vsize = eip = esp = 0; + permitted = ptrace_may_access(task, PTRACE_MODE_READ | PTRACE_MODE_NOAUDIT); +@@ -449,6 +487,19 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns, + gtime = task->gtime; + } + ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ if (PAX_RAND_FLAGS(mm)) { ++ eip = 0; ++ esp = 0; ++ wchan = 0; ++ } ++#endif ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ wchan = 0; ++ eip =0; ++ esp =0; ++#endif ++ + /* scale priority and nice values from timeslices to -20..20 */ + /* to make it look like a "normal" Unix priority/nice value */ + priority = task_prio(task); +@@ -485,9 +536,15 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns, + seq_put_decimal_ull(m, ' ', vsize); + seq_put_decimal_ll(m, ' ', mm ? get_mm_rss(mm) : 0); + seq_put_decimal_ull(m, ' ', rsslim); ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ seq_put_decimal_ull(m, ' ', PAX_RAND_FLAGS(mm) ? 1 : (mm ? (permitted ? mm->start_code : 1) : 0)); ++ seq_put_decimal_ull(m, ' ', PAX_RAND_FLAGS(mm) ? 1 : (mm ? (permitted ? mm->end_code : 1) : 0)); ++ seq_put_decimal_ull(m, ' ', PAX_RAND_FLAGS(mm) ? 0 : ((permitted && mm) ? mm->start_stack : 0)); ++#else + seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->start_code : 1) : 0); + seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->end_code : 1) : 0); + seq_put_decimal_ull(m, ' ', (permitted && mm) ? mm->start_stack : 0); ++#endif + seq_put_decimal_ull(m, ' ', esp); + seq_put_decimal_ull(m, ' ', eip); + /* The signal information here is obsolete. +@@ -508,9 +565,15 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns, + seq_put_decimal_ull(m, ' ', delayacct_blkio_ticks(task)); + seq_put_decimal_ull(m, ' ', cputime_to_clock_t(gtime)); + seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cgtime)); ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ seq_put_decimal_ull(m, ' ', PAX_RAND_FLAGS(mm) ? 0 : ((mm && permitted) ? mm->start_data : 0)); ++ seq_put_decimal_ull(m, ' ', PAX_RAND_FLAGS(mm) ? 0 : ((mm && permitted) ? mm->end_data : 0)); ++ seq_put_decimal_ull(m, ' ', PAX_RAND_FLAGS(mm) ? 0 : ((mm && permitted) ? mm->start_brk : 0)); ++#else + seq_put_decimal_ull(m, ' ', (mm && permitted) ? mm->start_data : 0); + seq_put_decimal_ull(m, ' ', (mm && permitted) ? mm->end_data : 0); + seq_put_decimal_ull(m, ' ', (mm && permitted) ? mm->start_brk : 0); ++#endif + seq_putc(m, '\n'); + if (mm) + mmput(mm); +@@ -533,8 +596,15 @@ int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns, + struct pid *pid, struct task_struct *task) + { + unsigned long size = 0, resident = 0, shared = 0, text = 0, data = 0; +- struct mm_struct *mm = get_task_mm(task); ++ struct mm_struct *mm; + ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ if (current->exec_id != m->exec_id) { ++ gr_log_badprocpid("statm"); ++ return 0; ++ } ++#endif ++ mm = get_task_mm(task); + if (mm) { + size = task_statm(mm, &shared, &text, &data, &resident); + mmput(mm); +@@ -556,3 +626,18 @@ int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns, + + return 0; + } ++ ++#ifdef CONFIG_GRKERNSEC_PROC_IPADDR ++int proc_pid_ipaddr(struct task_struct *task, char *buffer) ++{ ++ u32 curr_ip = 0; ++ unsigned long flags; ++ ++ if (lock_task_sighand(task, &flags)) { ++ curr_ip = task->signal->curr_ip; ++ unlock_task_sighand(task, &flags); ++ } ++ ++ return sprintf(buffer, "%pI4\n", &curr_ip); ++} ++#endif +diff --git a/fs/proc/base.c b/fs/proc/base.c +index 9fc77b4..04761b8 100644 +--- a/fs/proc/base.c ++++ b/fs/proc/base.c +@@ -109,6 +109,14 @@ struct pid_entry { + union proc_op op; + }; + ++struct getdents_callback { ++ struct linux_dirent __user * current_dir; ++ struct linux_dirent __user * previous; ++ struct file * file; ++ int count; ++ int error; ++}; ++ + #define NOD(NAME, MODE, IOP, FOP, OP) { \ + .name = (NAME), \ + .len = sizeof(NAME) - 1, \ +@@ -213,6 +221,9 @@ static int proc_pid_cmdline(struct task_struct *task, char * buffer) + if (!mm->arg_end) + goto out_mm; /* Shh! No looking before we're done */ + ++ if (gr_acl_handle_procpidmem(task)) ++ goto out_mm; ++ + len = mm->arg_end - mm->arg_start; + + if (len > PAGE_SIZE) +@@ -240,12 +251,28 @@ out: + return res; + } + ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++#define PAX_RAND_FLAGS(_mm) (_mm != NULL && _mm != current->mm && \ ++ (_mm->pax_flags & MF_PAX_RANDMMAP || \ ++ _mm->pax_flags & MF_PAX_SEGMEXEC)) ++#endif ++ + static int proc_pid_auxv(struct task_struct *task, char *buffer) + { + struct mm_struct *mm = mm_for_maps(task); + int res = PTR_ERR(mm); + if (mm && !IS_ERR(mm)) { + unsigned int nwords = 0; ++ ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ /* allow if we're currently ptracing this task */ ++ if (PAX_RAND_FLAGS(mm) && ++ (!(task->ptrace & PT_PTRACED) || (task->parent != current))) { ++ mmput(mm); ++ return 0; ++ } ++#endif ++ + do { + nwords += 2; + } while (mm->saved_auxv[nwords - 2] != 0); /* AT_NULL */ +@@ -259,7 +286,7 @@ static int proc_pid_auxv(struct task_struct *task, char *buffer) + } + + +-#ifdef CONFIG_KALLSYMS ++#if defined(CONFIG_KALLSYMS) && !defined(CONFIG_GRKERNSEC_HIDESYM) + /* + * Provides a wchan file via kallsyms in a proper one-value-per-file format. + * Returns the resolved symbol. If that fails, simply return the address. +@@ -298,7 +325,7 @@ static void unlock_trace(struct task_struct *task) + mutex_unlock(&task->signal->cred_guard_mutex); + } + +-#ifdef CONFIG_STACKTRACE ++#if defined(CONFIG_STACKTRACE) && !defined(CONFIG_GRKERNSEC_HIDESYM) + + #define MAX_STACK_TRACE_DEPTH 64 + +@@ -489,7 +516,7 @@ static int proc_pid_limits(struct task_struct *task, char *buffer) + return count; + } + +-#ifdef CONFIG_HAVE_ARCH_TRACEHOOK ++#if defined(CONFIG_HAVE_ARCH_TRACEHOOK) && !defined(CONFIG_GRKERNSEC_PROC_MEMMAP) + static int proc_pid_syscall(struct task_struct *task, char *buffer) + { + long nr; +@@ -518,7 +545,7 @@ static int proc_pid_syscall(struct task_struct *task, char *buffer) + /************************************************************************/ + + /* permission checks */ +-static int proc_fd_access_allowed(struct inode *inode) ++static int proc_fd_access_allowed(struct inode *inode, unsigned int log) + { + struct task_struct *task; + int allowed = 0; +@@ -528,7 +555,10 @@ static int proc_fd_access_allowed(struct inode *inode) + */ + task = get_proc_task(inode); + if (task) { +- allowed = ptrace_may_access(task, PTRACE_MODE_READ); ++ if (log) ++ allowed = ptrace_may_access(task, PTRACE_MODE_READ); ++ else ++ allowed = ptrace_may_access(task, PTRACE_MODE_READ | PTRACE_MODE_NOAUDIT); + put_task_struct(task); + } + return allowed; +@@ -566,10 +596,35 @@ static bool has_pid_permissions(struct pid_namespace *pid, + struct task_struct *task, + int hide_pid_min) + { ++ if (gr_pid_is_chrooted(task) || gr_check_hidden_task(task)) ++ return false; ++ ++#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++ rcu_read_lock(); ++ { ++ const struct cred *tmpcred = current_cred(); ++ const struct cred *cred = __task_cred(task); ++ ++ if (!tmpcred->uid || (tmpcred->uid == cred->uid) ++#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP ++ || in_group_p(CONFIG_GRKERNSEC_PROC_GID) ++#endif ++ ) { ++ rcu_read_unlock(); ++ return true; ++ } ++ } ++ rcu_read_unlock(); ++ ++ if (!pid->hide_pid) ++ return false; ++#endif ++ + if (pid->hide_pid < hide_pid_min) + return true; + if (in_group_p(pid->pid_gid)) + return true; ++ + return ptrace_may_access(task, PTRACE_MODE_READ); + } + +@@ -587,7 +642,11 @@ static int proc_pid_permission(struct inode *inode, int mask) + put_task_struct(task); + + if (!has_perms) { ++#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++ { ++#else + if (pid->hide_pid == 2) { ++#endif + /* + * Let's make getdents(), stat(), and open() + * consistent with each other. If a process +@@ -702,6 +761,10 @@ static int mem_open(struct inode* inode, struct file* file) + file->f_mode |= FMODE_UNSIGNED_OFFSET; + file->private_data = mm; + ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ file->f_version = current->exec_id; ++#endif ++ + return 0; + } + +@@ -713,6 +776,17 @@ static ssize_t mem_rw(struct file *file, char __user *buf, + ssize_t copied; + char *page; + ++#ifdef CONFIG_GRKERNSEC ++ if (write) ++ return -EPERM; ++#endif ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ if (file->f_version != current->exec_id) { ++ gr_log_badprocpid("mem"); ++ return 0; ++ } ++#endif ++ + if (!mm) + return 0; + +@@ -813,6 +887,9 @@ static ssize_t environ_read(struct file *file, char __user *buf, + if (!task) + goto out_no_task; + ++ if (gr_acl_handle_procpidmem(task)) ++ goto out; ++ + ret = -ENOMEM; + page = (char *)__get_free_page(GFP_TEMPORARY); + if (!page) +@@ -1433,7 +1510,7 @@ static void *proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd) + path_put(&nd->path); + + /* Are we allowed to snoop on the tasks file descriptors? */ +- if (!proc_fd_access_allowed(inode)) ++ if (!proc_fd_access_allowed(inode, 0)) + goto out; + + error = PROC_I(inode)->op.proc_get_link(dentry, &nd->path); +@@ -1472,8 +1549,18 @@ static int proc_pid_readlink(struct dentry * dentry, char __user * buffer, int b + struct path path; + + /* Are we allowed to snoop on the tasks file descriptors? */ +- if (!proc_fd_access_allowed(inode)) +- goto out; ++ /* logging this is needed for learning on chromium to work properly, ++ but we don't want to flood the logs from 'ps' which does a readlink ++ on /proc/fd/2 of tasks in the listing, nor do we want 'ps' to learn ++ CAP_SYS_PTRACE as it's not necessary for its basic functionality ++ */ ++ if (dentry->d_name.name[0] == '2' && dentry->d_name.name[1] == '\0') { ++ if (!proc_fd_access_allowed(inode,0)) ++ goto out; ++ } else { ++ if (!proc_fd_access_allowed(inode,1)) ++ goto out; ++ } + + error = PROC_I(inode)->op.proc_get_link(dentry, &path); + if (error) +@@ -1538,7 +1625,11 @@ struct inode *proc_pid_make_inode(struct super_block * sb, struct task_struct *t + rcu_read_lock(); + cred = __task_cred(task); + inode->i_uid = cred->euid; ++#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP ++ inode->i_gid = CONFIG_GRKERNSEC_PROC_GID; ++#else + inode->i_gid = cred->egid; ++#endif + rcu_read_unlock(); + } + security_task_to_inode(task, inode); +@@ -1574,10 +1665,19 @@ int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) + return -ENOENT; + } + if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) || ++#ifdef CONFIG_GRKERNSEC_PROC_USER ++ (inode->i_mode == (S_IFDIR|S_IRUSR|S_IXUSR)) || ++#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++ (inode->i_mode == (S_IFDIR|S_IRUSR|S_IRGRP|S_IXUSR|S_IXGRP)) || ++#endif + task_dumpable(task)) { + cred = __task_cred(task); + stat->uid = cred->euid; ++#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP ++ stat->gid = CONFIG_GRKERNSEC_PROC_GID; ++#else + stat->gid = cred->egid; ++#endif + } + } + rcu_read_unlock(); +@@ -1615,11 +1715,20 @@ int pid_revalidate(struct dentry *dentry, struct nameidata *nd) + + if (task) { + if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) || ++#ifdef CONFIG_GRKERNSEC_PROC_USER ++ (inode->i_mode == (S_IFDIR|S_IRUSR|S_IXUSR)) || ++#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++ (inode->i_mode == (S_IFDIR|S_IRUSR|S_IRGRP|S_IXUSR|S_IXGRP)) || ++#endif + task_dumpable(task)) { + rcu_read_lock(); + cred = __task_cred(task); + inode->i_uid = cred->euid; ++#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP ++ inode->i_gid = CONFIG_GRKERNSEC_PROC_GID; ++#else + inode->i_gid = cred->egid; ++#endif + rcu_read_unlock(); + } else { + inode->i_uid = 0; +@@ -1737,7 +1846,8 @@ static int proc_fd_info(struct inode *inode, struct path *path, char *info) + int fd = proc_fd(inode); + + if (task) { +- files = get_files_struct(task); ++ if (!gr_acl_handle_procpidmem(task)) ++ files = get_files_struct(task); + put_task_struct(task); + } + if (files) { +@@ -2338,11 +2448,21 @@ static const struct file_operations proc_map_files_operations = { + */ + static int proc_fd_permission(struct inode *inode, int mask) + { ++ struct task_struct *task; + int rv = generic_permission(inode, mask); +- if (rv == 0) +- return 0; ++ + if (task_pid(current) == proc_pid(inode)) + rv = 0; ++ ++ task = get_proc_task(inode); ++ if (task == NULL) ++ return rv; ++ ++ if (gr_acl_handle_procpidmem(task)) ++ rv = -EACCES; ++ ++ put_task_struct(task); ++ + return rv; + } + +@@ -2452,6 +2572,9 @@ static struct dentry *proc_pident_lookup(struct inode *dir, + if (!task) + goto out_no_task; + ++ if (gr_pid_is_chrooted(task) || gr_check_hidden_task(task)) ++ goto out; ++ + /* + * Yes, it does not scale. And it should not. Don't add + * new entries into /proc/<tgid>/ without very good reasons. +@@ -2496,6 +2619,9 @@ static int proc_pident_readdir(struct file *filp, + if (!task) + goto out_no_task; + ++ if (gr_pid_is_chrooted(task) || gr_check_hidden_task(task)) ++ goto out; ++ + ret = 0; + i = filp->f_pos; + switch (i) { +@@ -2766,7 +2892,7 @@ static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd) + static void proc_self_put_link(struct dentry *dentry, struct nameidata *nd, + void *cookie) + { +- char *s = nd_get_link(nd); ++ const char *s = nd_get_link(nd); + if (!IS_ERR(s)) + __putname(s); + } +@@ -2967,7 +3093,7 @@ static const struct pid_entry tgid_base_stuff[] = { + REG("autogroup", S_IRUGO|S_IWUSR, proc_pid_sched_autogroup_operations), + #endif + REG("comm", S_IRUGO|S_IWUSR, proc_pid_set_comm_operations), +-#ifdef CONFIG_HAVE_ARCH_TRACEHOOK ++#if defined(CONFIG_HAVE_ARCH_TRACEHOOK) && !defined(CONFIG_GRKERNSEC_PROC_MEMMAP) + INF("syscall", S_IRUGO, proc_pid_syscall), + #endif + INF("cmdline", S_IRUGO, proc_pid_cmdline), +@@ -2992,10 +3118,10 @@ static const struct pid_entry tgid_base_stuff[] = { + #ifdef CONFIG_SECURITY + DIR("attr", S_IRUGO|S_IXUGO, proc_attr_dir_inode_operations, proc_attr_dir_operations), + #endif +-#ifdef CONFIG_KALLSYMS ++#if defined(CONFIG_KALLSYMS) && !defined(CONFIG_GRKERNSEC_HIDESYM) + INF("wchan", S_IRUGO, proc_pid_wchan), + #endif +-#ifdef CONFIG_STACKTRACE ++#if defined(CONFIG_STACKTRACE) && !defined(CONFIG_GRKERNSEC_HIDESYM) + ONE("stack", S_IRUGO, proc_pid_stack), + #endif + #ifdef CONFIG_SCHEDSTATS +@@ -3029,6 +3155,9 @@ static const struct pid_entry tgid_base_stuff[] = { + #ifdef CONFIG_HARDWALL + INF("hardwall", S_IRUGO, proc_pid_hardwall), + #endif ++#ifdef CONFIG_GRKERNSEC_PROC_IPADDR ++ INF("ipaddr", S_IRUSR, proc_pid_ipaddr), ++#endif + }; + + static int proc_tgid_base_readdir(struct file * filp, +@@ -3155,7 +3284,14 @@ static struct dentry *proc_pid_instantiate(struct inode *dir, + if (!inode) + goto out; + ++#ifdef CONFIG_GRKERNSEC_PROC_USER ++ inode->i_mode = S_IFDIR|S_IRUSR|S_IXUSR; ++#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++ inode->i_gid = CONFIG_GRKERNSEC_PROC_GID; ++ inode->i_mode = S_IFDIR|S_IRUSR|S_IRGRP|S_IXUSR|S_IXGRP; ++#else + inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO; ++#endif + inode->i_op = &proc_tgid_base_inode_operations; + inode->i_fop = &proc_tgid_base_operations; + inode->i_flags|=S_IMMUTABLE; +@@ -3197,7 +3333,11 @@ struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct + if (!task) + goto out; + ++ if (gr_pid_is_chrooted(task) || gr_check_hidden_task(task)) ++ goto out_put_task; ++ + result = proc_pid_instantiate(dir, dentry, task, NULL); ++out_put_task: + put_task_struct(task); + out: + return result; +@@ -3260,6 +3400,8 @@ static int proc_pid_fill_cache(struct file *filp, void *dirent, filldir_t filldi + static int fake_filldir(void *buf, const char *name, int namelen, + loff_t offset, u64 ino, unsigned d_type) + { ++ struct getdents_callback * __buf = (struct getdents_callback *) buf; ++ __buf->error = -EINVAL; + return 0; + } + +@@ -3326,7 +3468,7 @@ static const struct pid_entry tid_base_stuff[] = { + REG("sched", S_IRUGO|S_IWUSR, proc_pid_sched_operations), + #endif + REG("comm", S_IRUGO|S_IWUSR, proc_pid_set_comm_operations), +-#ifdef CONFIG_HAVE_ARCH_TRACEHOOK ++#if defined(CONFIG_HAVE_ARCH_TRACEHOOK) && !defined(CONFIG_GRKERNSEC_PROC_MEMMAP) + INF("syscall", S_IRUGO, proc_pid_syscall), + #endif + INF("cmdline", S_IRUGO, proc_pid_cmdline), +@@ -3350,10 +3492,10 @@ static const struct pid_entry tid_base_stuff[] = { + #ifdef CONFIG_SECURITY + DIR("attr", S_IRUGO|S_IXUGO, proc_attr_dir_inode_operations, proc_attr_dir_operations), + #endif +-#ifdef CONFIG_KALLSYMS ++#if defined(CONFIG_KALLSYMS) && !defined(CONFIG_GRKERNSEC_HIDESYM) + INF("wchan", S_IRUGO, proc_pid_wchan), + #endif +-#ifdef CONFIG_STACKTRACE ++#if defined(CONFIG_STACKTRACE) && !defined(CONFIG_GRKERNSEC_HIDESYM) + ONE("stack", S_IRUGO, proc_pid_stack), + #endif + #ifdef CONFIG_SCHEDSTATS +diff --git a/fs/proc/cmdline.c b/fs/proc/cmdline.c +index 82676e3..5f8518a 100644 +--- a/fs/proc/cmdline.c ++++ b/fs/proc/cmdline.c +@@ -23,7 +23,11 @@ static const struct file_operations cmdline_proc_fops = { + + static int __init proc_cmdline_init(void) + { ++#ifdef CONFIG_GRKERNSEC_PROC_ADD ++ proc_create_grsec("cmdline", 0, NULL, &cmdline_proc_fops); ++#else + proc_create("cmdline", 0, NULL, &cmdline_proc_fops); ++#endif + return 0; + } + module_init(proc_cmdline_init); +diff --git a/fs/proc/devices.c b/fs/proc/devices.c +index b143471..bb105e5 100644 +--- a/fs/proc/devices.c ++++ b/fs/proc/devices.c +@@ -64,7 +64,11 @@ static const struct file_operations proc_devinfo_operations = { + + static int __init proc_devices_init(void) + { ++#ifdef CONFIG_GRKERNSEC_PROC_ADD ++ proc_create_grsec("devices", 0, NULL, &proc_devinfo_operations); ++#else + proc_create("devices", 0, NULL, &proc_devinfo_operations); ++#endif + return 0; + } + module_init(proc_devices_init); +diff --git a/fs/proc/inode.c b/fs/proc/inode.c +index 205c922..2ee4c57 100644 +--- a/fs/proc/inode.c ++++ b/fs/proc/inode.c +@@ -21,11 +21,17 @@ + #include <linux/seq_file.h> + #include <linux/slab.h> + #include <linux/mount.h> ++#include <linux/grsecurity.h> + + #include <asm/uaccess.h> + + #include "internal.h" + ++#ifdef CONFIG_PROC_SYSCTL ++extern const struct inode_operations proc_sys_inode_operations; ++extern const struct inode_operations proc_sys_dir_operations; ++#endif ++ + static void proc_evict_inode(struct inode *inode) + { + struct proc_dir_entry *de; +@@ -51,6 +57,13 @@ static void proc_evict_inode(struct inode *inode) + ns_ops = PROC_I(inode)->ns_ops; + if (ns_ops && ns_ops->put) + ns_ops->put(PROC_I(inode)->ns); ++ ++#ifdef CONFIG_PROC_SYSCTL ++ if (inode->i_op == &proc_sys_inode_operations || ++ inode->i_op == &proc_sys_dir_operations) ++ gr_handle_delete(inode->i_ino, inode->i_sb->s_dev); ++#endif ++ + } + + static struct kmem_cache * proc_inode_cachep; +@@ -456,7 +469,11 @@ struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de) + if (de->mode) { + inode->i_mode = de->mode; + inode->i_uid = de->uid; ++#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP ++ inode->i_gid = CONFIG_GRKERNSEC_PROC_GID; ++#else + inode->i_gid = de->gid; ++#endif + } + if (de->size) + inode->i_size = de->size; +diff --git a/fs/proc/internal.h b/fs/proc/internal.h +index 5f79bb8..eeccee4 100644 +--- a/fs/proc/internal.h ++++ b/fs/proc/internal.h +@@ -54,6 +54,9 @@ extern int proc_pid_status(struct seq_file *m, struct pid_namespace *ns, + struct pid *pid, struct task_struct *task); + extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns, + struct pid *pid, struct task_struct *task); ++#ifdef CONFIG_GRKERNSEC_PROC_IPADDR ++extern int proc_pid_ipaddr(struct task_struct *task, char *buffer); ++#endif + extern loff_t mem_lseek(struct file *file, loff_t offset, int orig); + + extern const struct file_operations proc_pid_maps_operations; +diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c +index 86c67ee..cdca321 100644 +--- a/fs/proc/kcore.c ++++ b/fs/proc/kcore.c +@@ -480,9 +480,10 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos) + * the addresses in the elf_phdr on our list. + */ + start = kc_offset_to_vaddr(*fpos - elf_buflen); +- if ((tsz = (PAGE_SIZE - (start & ~PAGE_MASK))) > buflen) ++ tsz = PAGE_SIZE - (start & ~PAGE_MASK); ++ if (tsz > buflen) + tsz = buflen; +- ++ + while (buflen) { + struct kcore_list *m; + +@@ -511,20 +512,23 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos) + kfree(elf_buf); + } else { + if (kern_addr_valid(start)) { +- unsigned long n; ++ char *elf_buf; ++ mm_segment_t oldfs; + +- n = copy_to_user(buffer, (char *)start, tsz); +- /* +- * We cannot distinguish between fault on source +- * and fault on destination. When this happens +- * we clear too and hope it will trigger the +- * EFAULT again. +- */ +- if (n) { +- if (clear_user(buffer + tsz - n, +- n)) ++ elf_buf = kmalloc(tsz, GFP_KERNEL); ++ if (!elf_buf) ++ return -ENOMEM; ++ oldfs = get_fs(); ++ set_fs(KERNEL_DS); ++ if (!__copy_from_user(elf_buf, (const void __user *)start, tsz)) { ++ set_fs(oldfs); ++ if (copy_to_user(buffer, elf_buf, tsz)) { ++ kfree(elf_buf); + return -EFAULT; ++ } + } ++ set_fs(oldfs); ++ kfree(elf_buf); + } else { + if (clear_user(buffer, tsz)) + return -EFAULT; +@@ -544,6 +548,9 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos) + + static int open_kcore(struct inode *inode, struct file *filp) + { ++#if defined(CONFIG_GRKERNSEC_PROC_ADD) || defined(CONFIG_GRKERNSEC_HIDESYM) ++ return -EPERM; ++#endif + if (!capable(CAP_SYS_RAWIO)) + return -EPERM; + if (kcore_need_update) +diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c +index 80e4645..53e5fcf 100644 +--- a/fs/proc/meminfo.c ++++ b/fs/proc/meminfo.c +@@ -158,7 +158,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v) + vmi.used >> 10, + vmi.largest_chunk >> 10 + #ifdef CONFIG_MEMORY_FAILURE +- ,atomic_long_read(&mce_bad_pages) << (PAGE_SHIFT - 10) ++ ,atomic_long_read_unchecked(&mce_bad_pages) << (PAGE_SHIFT - 10) + #endif + #ifdef CONFIG_TRANSPARENT_HUGEPAGE + ,K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) * +diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c +index b1822dd..df622cb 100644 +--- a/fs/proc/nommu.c ++++ b/fs/proc/nommu.c +@@ -66,7 +66,7 @@ static int nommu_region_show(struct seq_file *m, struct vm_region *region) + if (len < 1) + len = 1; + seq_printf(m, "%*c", len, ' '); +- seq_path(m, &file->f_path, ""); ++ seq_path(m, &file->f_path, "\n\\"); + } + + seq_putc(m, '\n'); +diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c +index 06e1cc1..177cd98 100644 +--- a/fs/proc/proc_net.c ++++ b/fs/proc/proc_net.c +@@ -105,6 +105,17 @@ static struct net *get_proc_task_net(struct inode *dir) + struct task_struct *task; + struct nsproxy *ns; + struct net *net = NULL; ++#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++ const struct cred *cred = current_cred(); ++#endif ++ ++#ifdef CONFIG_GRKERNSEC_PROC_USER ++ if (cred->fsuid) ++ return net; ++#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++ if (cred->fsuid && !in_group_p(CONFIG_GRKERNSEC_PROC_GID)) ++ return net; ++#endif + + rcu_read_lock(); + task = pid_task(proc_pid(dir), PIDTYPE_PID); +diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c +index 21d836f..bebf3ee 100644 +--- a/fs/proc/proc_sysctl.c ++++ b/fs/proc/proc_sysctl.c +@@ -12,11 +12,15 @@ + #include <linux/module.h> + #include "internal.h" + ++extern int gr_handle_chroot_sysctl(const int op); ++extern int gr_handle_sysctl_mod(const char *dirname, const char *name, ++ const int op); ++ + static const struct dentry_operations proc_sys_dentry_operations; + static const struct file_operations proc_sys_file_operations; +-static const struct inode_operations proc_sys_inode_operations; ++const struct inode_operations proc_sys_inode_operations; + static const struct file_operations proc_sys_dir_file_operations; +-static const struct inode_operations proc_sys_dir_operations; ++const struct inode_operations proc_sys_dir_operations; + + void proc_sys_poll_notify(struct ctl_table_poll *poll) + { +@@ -470,8 +474,14 @@ static struct dentry *proc_sys_lookup(struct inode *dir, struct dentry *dentry, + + err = NULL; + d_set_d_op(dentry, &proc_sys_dentry_operations); ++ ++ gr_handle_proc_create(dentry, inode); ++ + d_add(dentry, inode); + ++ if (!gr_acl_handle_hidden_file(dentry, nd->path.mnt)) ++ err = ERR_PTR(-ENOENT); ++ + out: + sysctl_head_finish(head); + return err; +@@ -483,18 +493,20 @@ static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf, + struct inode *inode = filp->f_path.dentry->d_inode; + struct ctl_table_header *head = grab_header(inode); + struct ctl_table *table = PROC_I(inode)->sysctl_entry; ++ int op = write ? MAY_WRITE : MAY_READ; + ssize_t error; + size_t res; + + if (IS_ERR(head)) + return PTR_ERR(head); + ++ + /* + * At this point we know that the sysctl was not unregistered + * and won't be until we finish. + */ + error = -EPERM; +- if (sysctl_perm(head->root, table, write ? MAY_WRITE : MAY_READ)) ++ if (sysctl_perm(head->root, table, op)) + goto out; + + /* if that can happen at all, it should be -EINVAL, not -EISDIR */ +@@ -502,6 +514,22 @@ static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf, + if (!table->proc_handler) + goto out; + ++#ifdef CONFIG_GRKERNSEC ++ error = -EPERM; ++ if (gr_handle_chroot_sysctl(op)) ++ goto out; ++ dget(filp->f_path.dentry); ++ if (gr_handle_sysctl_mod(filp->f_path.dentry->d_parent->d_name.name, table->procname, op)) { ++ dput(filp->f_path.dentry); ++ goto out; ++ } ++ dput(filp->f_path.dentry); ++ if (!gr_acl_handle_open(filp->f_path.dentry, filp->f_path.mnt, op)) ++ goto out; ++ if (write && !capable(CAP_SYS_ADMIN)) ++ goto out; ++#endif ++ + /* careful: calling conventions are nasty here */ + res = count; + error = table->proc_handler(table, write, buf, &res, ppos); +@@ -599,6 +627,9 @@ static int proc_sys_fill_cache(struct file *filp, void *dirent, + return -ENOMEM; + } else { + d_set_d_op(child, &proc_sys_dentry_operations); ++ ++ gr_handle_proc_create(child, inode); ++ + d_add(child, inode); + } + } else { +@@ -642,6 +673,9 @@ static int scan(struct ctl_table_header *head, ctl_table *table, + if ((*pos)++ < file->f_pos) + return 0; + ++ if (!gr_acl_handle_hidden_file(file->f_path.dentry, file->f_path.mnt)) ++ return 0; ++ + if (unlikely(S_ISLNK(table->mode))) + res = proc_sys_link_fill_cache(file, dirent, filldir, head, table); + else +@@ -759,6 +793,9 @@ static int proc_sys_getattr(struct vfsmount *mnt, struct dentry *dentry, struct + if (IS_ERR(head)) + return PTR_ERR(head); + ++ if (table && !gr_acl_handle_hidden_file(dentry, mnt)) ++ return -ENOENT; ++ + generic_fillattr(inode, stat); + if (table) + stat->mode = (stat->mode & S_IFMT) | table->mode; +@@ -781,13 +818,13 @@ static const struct file_operations proc_sys_dir_file_operations = { + .llseek = generic_file_llseek, + }; + +-static const struct inode_operations proc_sys_inode_operations = { ++const struct inode_operations proc_sys_inode_operations = { + .permission = proc_sys_permission, + .setattr = proc_sys_setattr, + .getattr = proc_sys_getattr, + }; + +-static const struct inode_operations proc_sys_dir_operations = { ++const struct inode_operations proc_sys_dir_operations = { + .lookup = proc_sys_lookup, + .permission = proc_sys_permission, + .setattr = proc_sys_setattr, +diff --git a/fs/proc/root.c b/fs/proc/root.c +index eed44bf..abeb499 100644 +--- a/fs/proc/root.c ++++ b/fs/proc/root.c +@@ -188,7 +188,15 @@ void __init proc_root_init(void) + #ifdef CONFIG_PROC_DEVICETREE + proc_device_tree_init(); + #endif ++#ifdef CONFIG_GRKERNSEC_PROC_ADD ++#ifdef CONFIG_GRKERNSEC_PROC_USER ++ proc_mkdir_mode("bus", S_IRUSR | S_IXUSR, NULL); ++#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++ proc_mkdir_mode("bus", S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP, NULL); ++#endif ++#else + proc_mkdir("bus", NULL); ++#endif + proc_sys_init(); + } + +diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c +index 7faaf2a..096c28b 100644 +--- a/fs/proc/task_mmu.c ++++ b/fs/proc/task_mmu.c +@@ -11,12 +11,19 @@ + #include <linux/rmap.h> + #include <linux/swap.h> + #include <linux/swapops.h> ++#include <linux/grsecurity.h> + + #include <asm/elf.h> + #include <asm/uaccess.h> + #include <asm/tlbflush.h> + #include "internal.h" + ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++#define PAX_RAND_FLAGS(_mm) (_mm != NULL && _mm != current->mm && \ ++ (_mm->pax_flags & MF_PAX_RANDMMAP || \ ++ _mm->pax_flags & MF_PAX_SEGMEXEC)) ++#endif ++ + void task_mem(struct seq_file *m, struct mm_struct *mm) + { + unsigned long data, text, lib, swap; +@@ -52,8 +59,13 @@ void task_mem(struct seq_file *m, struct mm_struct *mm) + "VmExe:\t%8lu kB\n" + "VmLib:\t%8lu kB\n" + "VmPTE:\t%8lu kB\n" +- "VmSwap:\t%8lu kB\n", +- hiwater_vm << (PAGE_SHIFT-10), ++ "VmSwap:\t%8lu kB\n" ++ ++#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT ++ "CsBase:\t%8lx\nCsLim:\t%8lx\n" ++#endif ++ ++ ,hiwater_vm << (PAGE_SHIFT-10), + (total_vm - mm->reserved_vm) << (PAGE_SHIFT-10), + mm->locked_vm << (PAGE_SHIFT-10), + mm->pinned_vm << (PAGE_SHIFT-10), +@@ -62,7 +74,19 @@ void task_mem(struct seq_file *m, struct mm_struct *mm) + data << (PAGE_SHIFT-10), + mm->stack_vm << (PAGE_SHIFT-10), text, lib, + (PTRS_PER_PTE*sizeof(pte_t)*mm->nr_ptes) >> 10, +- swap << (PAGE_SHIFT-10)); ++ swap << (PAGE_SHIFT-10) ++ ++#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ , PAX_RAND_FLAGS(mm) ? 0 : mm->context.user_cs_base ++ , PAX_RAND_FLAGS(mm) ? 0 : mm->context.user_cs_limit ++#else ++ , mm->context.user_cs_base ++ , mm->context.user_cs_limit ++#endif ++#endif ++ ++ ); + } + + unsigned long task_vsize(struct mm_struct *mm) +@@ -231,13 +255,13 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid) + pgoff = ((loff_t)vma->vm_pgoff) << PAGE_SHIFT; + } + +- /* We don't show the stack guard page in /proc/maps */ ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ start = PAX_RAND_FLAGS(mm) ? 0UL : vma->vm_start; ++ end = PAX_RAND_FLAGS(mm) ? 0UL : vma->vm_end; ++#else + start = vma->vm_start; +- if (stack_guard_page_start(vma, start)) +- start += PAGE_SIZE; + end = vma->vm_end; +- if (stack_guard_page_end(vma, end)) +- end -= PAGE_SIZE; ++#endif + + seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n", + start, +@@ -246,7 +270,11 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid) + flags & VM_WRITE ? 'w' : '-', + flags & VM_EXEC ? 'x' : '-', + flags & VM_MAYSHARE ? 's' : 'p', ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ PAX_RAND_FLAGS(mm) ? 0UL : pgoff, ++#else + pgoff, ++#endif + MAJOR(dev), MINOR(dev), ino, &len); + + /* +@@ -255,7 +283,7 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid) + */ + if (file) { + pad_len_spaces(m, len); +- seq_path(m, &file->f_path, "\n"); ++ seq_path(m, &file->f_path, "\n\\"); + goto done; + } + +@@ -281,8 +309,9 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid) + * Thread stack in /proc/PID/task/TID/maps or + * the main process stack. + */ +- if (!is_pid || (vma->vm_start <= mm->start_stack && +- vma->vm_end >= mm->start_stack)) { ++ if (!is_pid || (vma->vm_flags & (VM_GROWSDOWN | VM_GROWSUP)) || ++ (vma->vm_start <= mm->start_stack && ++ vma->vm_end >= mm->start_stack)) { + name = "[stack]"; + } else { + /* Thread stack in /proc/PID/maps */ +@@ -306,6 +335,13 @@ static int show_map(struct seq_file *m, void *v, int is_pid) + struct proc_maps_private *priv = m->private; + struct task_struct *task = priv->task; + ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ if (current->exec_id != m->exec_id) { ++ gr_log_badprocpid("maps"); ++ return 0; ++ } ++#endif ++ + show_map_vma(m, vma, is_pid); + + if (m->count < m->size) /* vma is copied successfully */ +@@ -482,12 +518,23 @@ static int show_smap(struct seq_file *m, void *v, int is_pid) + .private = &mss, + }; + ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ if (current->exec_id != m->exec_id) { ++ gr_log_badprocpid("smaps"); ++ return 0; ++ } ++#endif + memset(&mss, 0, sizeof mss); +- mss.vma = vma; +- /* mmap_sem is held in m_start */ +- if (vma->vm_mm && !is_vm_hugetlb_page(vma)) +- walk_page_range(vma->vm_start, vma->vm_end, &smaps_walk); +- ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ if (!PAX_RAND_FLAGS(vma->vm_mm)) { ++#endif ++ mss.vma = vma; ++ /* mmap_sem is held in m_start */ ++ if (vma->vm_mm && !is_vm_hugetlb_page(vma)) ++ walk_page_range(vma->vm_start, vma->vm_end, &smaps_walk); ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ } ++#endif + show_map_vma(m, vma, is_pid); + + seq_printf(m, +@@ -505,7 +552,11 @@ static int show_smap(struct seq_file *m, void *v, int is_pid) + "KernelPageSize: %8lu kB\n" + "MMUPageSize: %8lu kB\n" + "Locked: %8lu kB\n", ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ PAX_RAND_FLAGS(vma->vm_mm) ? 0UL : (vma->vm_end - vma->vm_start) >> 10, ++#else + (vma->vm_end - vma->vm_start) >> 10, ++#endif + mss.resident >> 10, + (unsigned long)(mss.pss >> (10 + PSS_SHIFT)), + mss.shared_clean >> 10, +@@ -1138,6 +1189,13 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid) + int n; + char buffer[50]; + ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ if (current->exec_id != m->exec_id) { ++ gr_log_badprocpid("numa_maps"); ++ return 0; ++ } ++#endif ++ + if (!mm) + return 0; + +@@ -1155,11 +1213,15 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid) + mpol_to_str(buffer, sizeof(buffer), pol, 0); + mpol_cond_put(pol); + ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ seq_printf(m, "%08lx %s", PAX_RAND_FLAGS(vma->vm_mm) ? 0UL : vma->vm_start, buffer); ++#else + seq_printf(m, "%08lx %s", vma->vm_start, buffer); ++#endif + + if (file) { + seq_printf(m, " file="); +- seq_path(m, &file->f_path, "\n\t= "); ++ seq_path(m, &file->f_path, "\n\t\\= "); + } else if (vma->vm_start <= mm->brk && vma->vm_end >= mm->start_brk) { + seq_printf(m, " heap"); + } else { +diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c +index 74fe164..899e77b 100644 +--- a/fs/proc/task_nommu.c ++++ b/fs/proc/task_nommu.c +@@ -51,7 +51,7 @@ void task_mem(struct seq_file *m, struct mm_struct *mm) + else + bytes += kobjsize(mm); + +- if (current->fs && current->fs->users > 1) ++ if (current->fs && atomic_read(¤t->fs->users) > 1) + sbytes += kobjsize(current->fs); + else + bytes += kobjsize(current->fs); +@@ -168,7 +168,7 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma, + + if (file) { + pad_len_spaces(m, len); +- seq_path(m, &file->f_path, ""); ++ seq_path(m, &file->f_path, "\n\\"); + } else if (mm) { + pid_t tid = vm_is_stack(priv->task, vma, is_pid); + +diff --git a/fs/quota/netlink.c b/fs/quota/netlink.c +index d67908b..d13f6a6 100644 +--- a/fs/quota/netlink.c ++++ b/fs/quota/netlink.c +@@ -33,7 +33,7 @@ static struct genl_family quota_genl_family = { + void quota_send_warning(short type, unsigned int id, dev_t dev, + const char warntype) + { +- static atomic_t seq; ++ static atomic_unchecked_t seq; + struct sk_buff *skb; + void *msg_head; + int ret; +@@ -49,7 +49,7 @@ void quota_send_warning(short type, unsigned int id, dev_t dev, + "VFS: Not enough memory to send quota warning.\n"); + return; + } +- msg_head = genlmsg_put(skb, 0, atomic_add_return(1, &seq), ++ msg_head = genlmsg_put(skb, 0, atomic_add_return_unchecked(1, &seq), + "a_genl_family, 0, QUOTA_NL_C_WARNING); + if (!msg_head) { + printk(KERN_ERR +diff --git a/fs/readdir.c b/fs/readdir.c +index cc0a822..43cb195 100644 +--- a/fs/readdir.c ++++ b/fs/readdir.c +@@ -17,6 +17,7 @@ + #include <linux/security.h> + #include <linux/syscalls.h> + #include <linux/unistd.h> ++#include <linux/namei.h> + + #include <asm/uaccess.h> + +@@ -67,6 +68,7 @@ struct old_linux_dirent { + + struct readdir_callback { + struct old_linux_dirent __user * dirent; ++ struct file * file; + int result; + }; + +@@ -84,6 +86,10 @@ static int fillonedir(void * __buf, const char * name, int namlen, loff_t offset + buf->result = -EOVERFLOW; + return -EOVERFLOW; + } ++ ++ if (!gr_acl_handle_filldir(buf->file, name, namlen, ino)) ++ return 0; ++ + buf->result++; + dirent = buf->dirent; + if (!access_ok(VERIFY_WRITE, dirent, +@@ -116,6 +122,7 @@ SYSCALL_DEFINE3(old_readdir, unsigned int, fd, + + buf.result = 0; + buf.dirent = dirent; ++ buf.file = file; + + error = vfs_readdir(file, fillonedir, &buf); + if (buf.result) +@@ -142,6 +149,7 @@ struct linux_dirent { + struct getdents_callback { + struct linux_dirent __user * current_dir; + struct linux_dirent __user * previous; ++ struct file * file; + int count; + int error; + }; +@@ -163,6 +171,10 @@ static int filldir(void * __buf, const char * name, int namlen, loff_t offset, + buf->error = -EOVERFLOW; + return -EOVERFLOW; + } ++ ++ if (!gr_acl_handle_filldir(buf->file, name, namlen, ino)) ++ return 0; ++ + dirent = buf->previous; + if (dirent) { + if (__put_user(offset, &dirent->d_off)) +@@ -210,6 +222,7 @@ SYSCALL_DEFINE3(getdents, unsigned int, fd, + buf.previous = NULL; + buf.count = count; + buf.error = 0; ++ buf.file = file; + + error = vfs_readdir(file, filldir, &buf); + if (error >= 0) +@@ -229,6 +242,7 @@ out: + struct getdents_callback64 { + struct linux_dirent64 __user * current_dir; + struct linux_dirent64 __user * previous; ++ struct file *file; + int count; + int error; + }; +@@ -244,6 +258,10 @@ static int filldir64(void * __buf, const char * name, int namlen, loff_t offset, + buf->error = -EINVAL; /* only used if we fail.. */ + if (reclen > buf->count) + return -EINVAL; ++ ++ if (!gr_acl_handle_filldir(buf->file, name, namlen, ino)) ++ return 0; ++ + dirent = buf->previous; + if (dirent) { + if (__put_user(offset, &dirent->d_off)) +@@ -291,6 +309,7 @@ SYSCALL_DEFINE3(getdents64, unsigned int, fd, + + buf.current_dir = dirent; + buf.previous = NULL; ++ buf.file = file; + buf.count = count; + buf.error = 0; + +@@ -299,7 +318,7 @@ SYSCALL_DEFINE3(getdents64, unsigned int, fd, + error = buf.error; + lastdirent = buf.previous; + if (lastdirent) { +- typeof(lastdirent->d_off) d_off = file->f_pos; ++ typeof(((struct linux_dirent64 *)0)->d_off) d_off = file->f_pos; + if (__put_user(d_off, &lastdirent->d_off)) + error = -EFAULT; + else +diff --git a/fs/reiserfs/do_balan.c b/fs/reiserfs/do_balan.c +index 2b7882b..1c5ef48 100644 +--- a/fs/reiserfs/do_balan.c ++++ b/fs/reiserfs/do_balan.c +@@ -2051,7 +2051,7 @@ void do_balance(struct tree_balance *tb, /* tree_balance structure */ + return; + } + +- atomic_inc(&(fs_generation(tb->tb_sb))); ++ atomic_inc_unchecked(&(fs_generation(tb->tb_sb))); + do_balance_starts(tb); + + /* balance leaf returns 0 except if combining L R and S into +diff --git a/fs/reiserfs/procfs.c b/fs/reiserfs/procfs.c +index 2c1ade6..8c59d8d 100644 +--- a/fs/reiserfs/procfs.c ++++ b/fs/reiserfs/procfs.c +@@ -112,7 +112,7 @@ static int show_super(struct seq_file *m, struct super_block *sb) + "SMALL_TAILS " : "NO_TAILS ", + replay_only(sb) ? "REPLAY_ONLY " : "", + convert_reiserfs(sb) ? "CONV " : "", +- atomic_read(&r->s_generation_counter), ++ atomic_read_unchecked(&r->s_generation_counter), + SF(s_disk_reads), SF(s_disk_writes), SF(s_fix_nodes), + SF(s_do_balance), SF(s_unneeded_left_neighbor), + SF(s_good_search_by_key_reada), SF(s_bmaps), +diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h +index a59d271..e12d1cf 100644 +--- a/fs/reiserfs/reiserfs.h ++++ b/fs/reiserfs/reiserfs.h +@@ -453,7 +453,7 @@ struct reiserfs_sb_info { + /* Comment? -Hans */ + wait_queue_head_t s_wait; + /* To be obsoleted soon by per buffer seals.. -Hans */ +- atomic_t s_generation_counter; // increased by one every time the ++ atomic_unchecked_t s_generation_counter; // increased by one every time the + // tree gets re-balanced + unsigned long s_properties; /* File system properties. Currently holds + on-disk FS format */ +@@ -1973,7 +1973,7 @@ static inline loff_t max_reiserfs_offset(struct inode *inode) + #define REISERFS_USER_MEM 1 /* reiserfs user memory mode */ + + #define fs_generation(s) (REISERFS_SB(s)->s_generation_counter) +-#define get_generation(s) atomic_read (&fs_generation(s)) ++#define get_generation(s) atomic_read_unchecked (&fs_generation(s)) + #define FILESYSTEM_CHANGED_TB(tb) (get_generation((tb)->tb_sb) != (tb)->fs_gen) + #define __fs_changed(gen,s) (gen != get_generation (s)) + #define fs_changed(gen,s) \ +diff --git a/fs/select.c b/fs/select.c +index 17d33d0..da0bf5c 100644 +--- a/fs/select.c ++++ b/fs/select.c +@@ -20,6 +20,7 @@ + #include <linux/export.h> + #include <linux/slab.h> + #include <linux/poll.h> ++#include <linux/security.h> + #include <linux/personality.h> /* for STICKY_TIMEOUTS */ + #include <linux/file.h> + #include <linux/fdtable.h> +@@ -833,6 +834,7 @@ int do_sys_poll(struct pollfd __user *ufds, unsigned int nfds, + struct poll_list *walk = head; + unsigned long todo = nfds; + ++ gr_learn_resource(current, RLIMIT_NOFILE, nfds, 1); + if (nfds > rlimit(RLIMIT_NOFILE)) + return -EINVAL; + +diff --git a/fs/seq_file.c b/fs/seq_file.c +index 0cbd049..cab1127 100644 +--- a/fs/seq_file.c ++++ b/fs/seq_file.c +@@ -9,6 +9,7 @@ + #include <linux/export.h> + #include <linux/seq_file.h> + #include <linux/slab.h> ++#include <linux/sched.h> + + #include <asm/uaccess.h> + #include <asm/page.h> +@@ -56,6 +57,9 @@ int seq_open(struct file *file, const struct seq_operations *op) + memset(p, 0, sizeof(*p)); + mutex_init(&p->lock); + p->op = op; ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ p->exec_id = current->exec_id; ++#endif + + /* + * Wrappers around seq_open(e.g. swaps_open) need to be +@@ -567,7 +571,7 @@ static void single_stop(struct seq_file *p, void *v) + int single_open(struct file *file, int (*show)(struct seq_file *, void *), + void *data) + { +- struct seq_operations *op = kmalloc(sizeof(*op), GFP_KERNEL); ++ seq_operations_no_const *op = kmalloc(sizeof(*op), GFP_KERNEL); + int res = -ENOMEM; + + if (op) { +diff --git a/fs/splice.c b/fs/splice.c +index 5cac690..f833a99 100644 +--- a/fs/splice.c ++++ b/fs/splice.c +@@ -194,7 +194,7 @@ ssize_t splice_to_pipe(struct pipe_inode_info *pipe, + pipe_lock(pipe); + + for (;;) { +- if (!pipe->readers) { ++ if (!atomic_read(&pipe->readers)) { + send_sig(SIGPIPE, current, 0); + if (!ret) + ret = -EPIPE; +@@ -248,9 +248,9 @@ ssize_t splice_to_pipe(struct pipe_inode_info *pipe, + do_wakeup = 0; + } + +- pipe->waiting_writers++; ++ atomic_inc(&pipe->waiting_writers); + pipe_wait(pipe); +- pipe->waiting_writers--; ++ atomic_dec(&pipe->waiting_writers); + } + + pipe_unlock(pipe); +@@ -563,7 +563,7 @@ static ssize_t kernel_readv(struct file *file, const struct iovec *vec, + old_fs = get_fs(); + set_fs(get_ds()); + /* The cast to a user pointer is valid due to the set_fs() */ +- res = vfs_readv(file, (const struct iovec __user *)vec, vlen, &pos); ++ res = vfs_readv(file, (const struct iovec __force_user *)vec, vlen, &pos); + set_fs(old_fs); + + return res; +@@ -578,7 +578,7 @@ static ssize_t kernel_write(struct file *file, const char *buf, size_t count, + old_fs = get_fs(); + set_fs(get_ds()); + /* The cast to a user pointer is valid due to the set_fs() */ +- res = vfs_write(file, (const char __user *)buf, count, &pos); ++ res = vfs_write(file, (const char __force_user *)buf, count, &pos); + set_fs(old_fs); + + return res; +@@ -630,7 +630,7 @@ ssize_t default_file_splice_read(struct file *in, loff_t *ppos, + goto err; + + this_len = min_t(size_t, len, PAGE_CACHE_SIZE - offset); +- vec[i].iov_base = (void __user *) page_address(page); ++ vec[i].iov_base = (void __force_user *) page_address(page); + vec[i].iov_len = this_len; + spd.pages[i] = page; + spd.nr_pages++; +@@ -849,10 +849,10 @@ EXPORT_SYMBOL(splice_from_pipe_feed); + int splice_from_pipe_next(struct pipe_inode_info *pipe, struct splice_desc *sd) + { + while (!pipe->nrbufs) { +- if (!pipe->writers) ++ if (!atomic_read(&pipe->writers)) + return 0; + +- if (!pipe->waiting_writers && sd->num_spliced) ++ if (!atomic_read(&pipe->waiting_writers) && sd->num_spliced) + return 0; + + if (sd->flags & SPLICE_F_NONBLOCK) +@@ -1185,7 +1185,7 @@ ssize_t splice_direct_to_actor(struct file *in, struct splice_desc *sd, + * out of the pipe right after the splice_to_pipe(). So set + * PIPE_READERS appropriately. + */ +- pipe->readers = 1; ++ atomic_set(&pipe->readers, 1); + + current->splice_pipe = pipe; + } +@@ -1738,9 +1738,9 @@ static int ipipe_prep(struct pipe_inode_info *pipe, unsigned int flags) + ret = -ERESTARTSYS; + break; + } +- if (!pipe->writers) ++ if (!atomic_read(&pipe->writers)) + break; +- if (!pipe->waiting_writers) { ++ if (!atomic_read(&pipe->waiting_writers)) { + if (flags & SPLICE_F_NONBLOCK) { + ret = -EAGAIN; + break; +@@ -1772,7 +1772,7 @@ static int opipe_prep(struct pipe_inode_info *pipe, unsigned int flags) + pipe_lock(pipe); + + while (pipe->nrbufs >= pipe->buffers) { +- if (!pipe->readers) { ++ if (!atomic_read(&pipe->readers)) { + send_sig(SIGPIPE, current, 0); + ret = -EPIPE; + break; +@@ -1785,9 +1785,9 @@ static int opipe_prep(struct pipe_inode_info *pipe, unsigned int flags) + ret = -ERESTARTSYS; + break; + } +- pipe->waiting_writers++; ++ atomic_inc(&pipe->waiting_writers); + pipe_wait(pipe); +- pipe->waiting_writers--; ++ atomic_dec(&pipe->waiting_writers); + } + + pipe_unlock(pipe); +@@ -1823,14 +1823,14 @@ retry: + pipe_double_lock(ipipe, opipe); + + do { +- if (!opipe->readers) { ++ if (!atomic_read(&opipe->readers)) { + send_sig(SIGPIPE, current, 0); + if (!ret) + ret = -EPIPE; + break; + } + +- if (!ipipe->nrbufs && !ipipe->writers) ++ if (!ipipe->nrbufs && !atomic_read(&ipipe->writers)) + break; + + /* +@@ -1927,7 +1927,7 @@ static int link_pipe(struct pipe_inode_info *ipipe, + pipe_double_lock(ipipe, opipe); + + do { +- if (!opipe->readers) { ++ if (!atomic_read(&opipe->readers)) { + send_sig(SIGPIPE, current, 0); + if (!ret) + ret = -EPIPE; +@@ -1972,7 +1972,7 @@ static int link_pipe(struct pipe_inode_info *ipipe, + * return EAGAIN if we have the potential of some data in the + * future, otherwise just return 0 + */ +- if (!ret && ipipe->waiting_writers && (flags & SPLICE_F_NONBLOCK)) ++ if (!ret && atomic_read(&ipipe->waiting_writers) && (flags & SPLICE_F_NONBLOCK)) + ret = -EAGAIN; + + pipe_unlock(ipipe); +diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c +index 35a36d3..23424b2 100644 +--- a/fs/sysfs/dir.c ++++ b/fs/sysfs/dir.c +@@ -657,6 +657,18 @@ static int create_dir(struct kobject *kobj, struct sysfs_dirent *parent_sd, + struct sysfs_dirent *sd; + int rc; + ++#ifdef CONFIG_GRKERNSEC_SYSFS_RESTRICT ++ const char *parent_name = parent_sd->s_name; ++ ++ mode = S_IFDIR | S_IRWXU; ++ ++ if ((!strcmp(parent_name, "") && (!strcmp(name, "devices") || !strcmp(name, "fs"))) || ++ (!strcmp(parent_name, "devices") && !strcmp(name, "system")) || ++ (!strcmp(parent_name, "fs") && (!strcmp(name, "selinux") || !strcmp(name, "fuse"))) || ++ (!strcmp(parent_name, "system") && !strcmp(name, "cpu"))) ++ mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO; ++#endif ++ + /* allocate */ + sd = sysfs_new_dirent(name, mode, SYSFS_DIR); + if (!sd) +diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c +index 00012e3..8392349 100644 +--- a/fs/sysfs/file.c ++++ b/fs/sysfs/file.c +@@ -37,7 +37,7 @@ static DEFINE_SPINLOCK(sysfs_open_dirent_lock); + + struct sysfs_open_dirent { + atomic_t refcnt; +- atomic_t event; ++ atomic_unchecked_t event; + wait_queue_head_t poll; + struct list_head buffers; /* goes through sysfs_buffer.list */ + }; +@@ -81,7 +81,7 @@ static int fill_read_buffer(struct dentry * dentry, struct sysfs_buffer * buffer + if (!sysfs_get_active(attr_sd)) + return -ENODEV; + +- buffer->event = atomic_read(&attr_sd->s_attr.open->event); ++ buffer->event = atomic_read_unchecked(&attr_sd->s_attr.open->event); + count = ops->show(kobj, attr_sd->s_attr.attr, buffer->page); + + sysfs_put_active(attr_sd); +@@ -287,7 +287,7 @@ static int sysfs_get_open_dirent(struct sysfs_dirent *sd, + return -ENOMEM; + + atomic_set(&new_od->refcnt, 0); +- atomic_set(&new_od->event, 1); ++ atomic_set_unchecked(&new_od->event, 1); + init_waitqueue_head(&new_od->poll); + INIT_LIST_HEAD(&new_od->buffers); + goto retry; +@@ -432,7 +432,7 @@ static unsigned int sysfs_poll(struct file *filp, poll_table *wait) + + sysfs_put_active(attr_sd); + +- if (buffer->event != atomic_read(&od->event)) ++ if (buffer->event != atomic_read_unchecked(&od->event)) + goto trigger; + + return DEFAULT_POLLMASK; +@@ -451,7 +451,7 @@ void sysfs_notify_dirent(struct sysfs_dirent *sd) + + od = sd->s_attr.open; + if (od) { +- atomic_inc(&od->event); ++ atomic_inc_unchecked(&od->event); + wake_up_interruptible(&od->poll); + } + +diff --git a/fs/sysfs/symlink.c b/fs/sysfs/symlink.c +index a7ac78f..02158e1 100644 +--- a/fs/sysfs/symlink.c ++++ b/fs/sysfs/symlink.c +@@ -286,7 +286,7 @@ static void *sysfs_follow_link(struct dentry *dentry, struct nameidata *nd) + + static void sysfs_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie) + { +- char *page = nd_get_link(nd); ++ const char *page = nd_get_link(nd); + if (!IS_ERR(page)) + free_page((unsigned long)page); + } +diff --git a/fs/udf/misc.c b/fs/udf/misc.c +index c175b4d..8f36a16 100644 +--- a/fs/udf/misc.c ++++ b/fs/udf/misc.c +@@ -289,7 +289,7 @@ void udf_new_tag(char *data, uint16_t ident, uint16_t version, uint16_t snum, + + u8 udf_tag_checksum(const struct tag *t) + { +- u8 *data = (u8 *)t; ++ const u8 *data = (const u8 *)t; + u8 checksum = 0; + int i; + for (i = 0; i < sizeof(struct tag); ++i) +diff --git a/fs/utimes.c b/fs/utimes.c +index ba653f3..06ea4b1 100644 +--- a/fs/utimes.c ++++ b/fs/utimes.c +@@ -1,6 +1,7 @@ + #include <linux/compiler.h> + #include <linux/file.h> + #include <linux/fs.h> ++#include <linux/security.h> + #include <linux/linkage.h> + #include <linux/mount.h> + #include <linux/namei.h> +@@ -101,6 +102,12 @@ static int utimes_common(struct path *path, struct timespec *times) + goto mnt_drop_write_and_out; + } + } ++ ++ if (!gr_acl_handle_utime(path->dentry, path->mnt)) { ++ error = -EACCES; ++ goto mnt_drop_write_and_out; ++ } ++ + mutex_lock(&inode->i_mutex); + error = notify_change(path->dentry, &newattrs); + mutex_unlock(&inode->i_mutex); +diff --git a/fs/xattr.c b/fs/xattr.c +index 3c8c1cc..a83c398 100644 +--- a/fs/xattr.c ++++ b/fs/xattr.c +@@ -316,7 +316,7 @@ EXPORT_SYMBOL_GPL(vfs_removexattr); + * Extended attribute SET operations + */ + static long +-setxattr(struct dentry *d, const char __user *name, const void __user *value, ++setxattr(struct path *path, const char __user *name, const void __user *value, + size_t size, int flags) + { + int error; +@@ -349,7 +349,12 @@ setxattr(struct dentry *d, const char __user *name, const void __user *value, + } + } + +- error = vfs_setxattr(d, kname, kvalue, size, flags); ++ if (!gr_acl_handle_setxattr(path->dentry, path->mnt)) { ++ error = -EACCES; ++ goto out; ++ } ++ ++ error = vfs_setxattr(path->dentry, kname, kvalue, size, flags); + out: + if (vvalue) + vfree(vvalue); +@@ -370,7 +375,7 @@ SYSCALL_DEFINE5(setxattr, const char __user *, pathname, + return error; + error = mnt_want_write(path.mnt); + if (!error) { +- error = setxattr(path.dentry, name, value, size, flags); ++ error = setxattr(&path, name, value, size, flags); + mnt_drop_write(path.mnt); + } + path_put(&path); +@@ -389,7 +394,7 @@ SYSCALL_DEFINE5(lsetxattr, const char __user *, pathname, + return error; + error = mnt_want_write(path.mnt); + if (!error) { +- error = setxattr(path.dentry, name, value, size, flags); ++ error = setxattr(&path, name, value, size, flags); + mnt_drop_write(path.mnt); + } + path_put(&path); +@@ -400,17 +405,15 @@ SYSCALL_DEFINE5(fsetxattr, int, fd, const char __user *, name, + const void __user *,value, size_t, size, int, flags) + { + struct file *f; +- struct dentry *dentry; + int error = -EBADF; + + f = fget(fd); + if (!f) + return error; +- dentry = f->f_path.dentry; +- audit_inode(NULL, dentry); ++ audit_inode(NULL, f->f_path.dentry); + error = mnt_want_write_file(f); + if (!error) { +- error = setxattr(dentry, name, value, size, flags); ++ error = setxattr(&f->f_path, name, value, size, flags); + mnt_drop_write_file(f); + } + fput(f); +diff --git a/fs/xattr_acl.c b/fs/xattr_acl.c +index 69d06b0..c0996e5 100644 +--- a/fs/xattr_acl.c ++++ b/fs/xattr_acl.c +@@ -17,8 +17,8 @@ + struct posix_acl * + posix_acl_from_xattr(const void *value, size_t size) + { +- posix_acl_xattr_header *header = (posix_acl_xattr_header *)value; +- posix_acl_xattr_entry *entry = (posix_acl_xattr_entry *)(header+1), *end; ++ const posix_acl_xattr_header *header = (const posix_acl_xattr_header *)value; ++ const posix_acl_xattr_entry *entry = (const posix_acl_xattr_entry *)(header+1), *end; + int count; + struct posix_acl *acl; + struct posix_acl_entry *acl_e; +diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c +index 85e7e32..5344e52 100644 +--- a/fs/xfs/xfs_bmap.c ++++ b/fs/xfs/xfs_bmap.c +@@ -190,7 +190,7 @@ xfs_bmap_validate_ret( + int nmap, + int ret_nmap); + #else +-#define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap) ++#define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap) do {} while (0) + #endif /* DEBUG */ + + STATIC int +diff --git a/fs/xfs/xfs_dir2_sf.c b/fs/xfs/xfs_dir2_sf.c +index 79d05e8..e3e5861 100644 +--- a/fs/xfs/xfs_dir2_sf.c ++++ b/fs/xfs/xfs_dir2_sf.c +@@ -852,7 +852,15 @@ xfs_dir2_sf_getdents( + } + + ino = xfs_dir2_sfe_get_ino(sfp, sfep); +- if (filldir(dirent, (char *)sfep->name, sfep->namelen, ++ if (dp->i_df.if_u1.if_data == dp->i_df.if_u2.if_inline_data) { ++ char name[sfep->namelen]; ++ memcpy(name, sfep->name, sfep->namelen); ++ if (filldir(dirent, name, sfep->namelen, ++ off & 0x7fffffff, ino, DT_UNKNOWN)) { ++ *offset = off & 0x7fffffff; ++ return 0; ++ } ++ } else if (filldir(dirent, (char *)sfep->name, sfep->namelen, + off & 0x7fffffff, ino, DT_UNKNOWN)) { + *offset = off & 0x7fffffff; + return 0; +diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c +index 91f8ff5..0ce68f9 100644 +--- a/fs/xfs/xfs_ioctl.c ++++ b/fs/xfs/xfs_ioctl.c +@@ -128,7 +128,7 @@ xfs_find_handle( + } + + error = -EFAULT; +- if (copy_to_user(hreq->ohandle, &handle, hsize) || ++ if (hsize > sizeof handle || copy_to_user(hreq->ohandle, &handle, hsize) || + copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) + goto out_put; + +diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c +index 3011b87..1ab03e9 100644 +--- a/fs/xfs/xfs_iops.c ++++ b/fs/xfs/xfs_iops.c +@@ -397,7 +397,7 @@ xfs_vn_put_link( + struct nameidata *nd, + void *p) + { +- char *s = nd_get_link(nd); ++ const char *s = nd_get_link(nd); + + if (!IS_ERR(s)) + kfree(s); +diff --git a/grsecurity/Kconfig b/grsecurity/Kconfig +new file mode 100644 +index 0000000..b9e7d6f +--- /dev/null ++++ b/grsecurity/Kconfig +@@ -0,0 +1,940 @@ ++# ++# grecurity configuration ++# ++menu "Memory Protections" ++depends on GRKERNSEC ++ ++config GRKERNSEC_KMEM ++ bool "Deny reading/writing to /dev/kmem, /dev/mem, and /dev/port" ++ default y if GRKERNSEC_CONFIG_AUTO ++ select STRICT_DEVMEM if (X86 || ARM || TILE || S390) ++ help ++ If you say Y here, /dev/kmem and /dev/mem won't be allowed to ++ be written to or read from to modify or leak the contents of the running ++ kernel. /dev/port will also not be allowed to be opened. If you have module ++ support disabled, enabling this will close up four ways that are ++ currently used to insert malicious code into the running kernel. ++ Even with all these features enabled, we still highly recommend that ++ you use the RBAC system, as it is still possible for an attacker to ++ modify the running kernel through privileged I/O granted by ioperm/iopl. ++ If you are not using XFree86, you may be able to stop this additional ++ case by enabling the 'Disable privileged I/O' option. Though nothing ++ legitimately writes to /dev/kmem, XFree86 does need to write to /dev/mem, ++ but only to video memory, which is the only writing we allow in this ++ case. If /dev/kmem or /dev/mem are mmaped without PROT_WRITE, they will ++ not be allowed to mprotect it with PROT_WRITE later. ++ It is highly recommended that you say Y here if you meet all the ++ conditions above. ++ ++config GRKERNSEC_VM86 ++ bool "Restrict VM86 mode" ++ default y if (GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_SERVER) ++ depends on X86_32 ++ ++ help ++ If you say Y here, only processes with CAP_SYS_RAWIO will be able to ++ make use of a special execution mode on 32bit x86 processors called ++ Virtual 8086 (VM86) mode. XFree86 may need vm86 mode for certain ++ video cards and will still work with this option enabled. The purpose ++ of the option is to prevent exploitation of emulation errors in ++ virtualization of vm86 mode like the one discovered in VMWare in 2009. ++ Nearly all users should be able to enable this option. ++ ++config GRKERNSEC_IO ++ bool "Disable privileged I/O" ++ default y if (GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_SERVER) ++ depends on X86 ++ select RTC_CLASS ++ select RTC_INTF_DEV ++ select RTC_DRV_CMOS ++ ++ help ++ If you say Y here, all ioperm and iopl calls will return an error. ++ Ioperm and iopl can be used to modify the running kernel. ++ Unfortunately, some programs need this access to operate properly, ++ the most notable of which are XFree86 and hwclock. hwclock can be ++ remedied by having RTC support in the kernel, so real-time ++ clock support is enabled if this option is enabled, to ensure ++ that hwclock operates correctly. XFree86 still will not ++ operate correctly with this option enabled, so DO NOT CHOOSE Y ++ IF YOU USE XFree86. If you use XFree86 and you still want to ++ protect your kernel against modification, use the RBAC system. ++ ++config GRKERNSEC_PROC_MEMMAP ++ bool "Harden ASLR against information leaks and entropy reduction" ++ default y if (GRKERNSEC_CONFIG_AUTO || PAX_NOEXEC || PAX_ASLR) ++ depends on PAX_NOEXEC || PAX_ASLR ++ help ++ If you say Y here, the /proc/<pid>/maps and /proc/<pid>/stat files will ++ give no information about the addresses of its mappings if ++ PaX features that rely on random addresses are enabled on the task. ++ In addition to sanitizing this information and disabling other ++ dangerous sources of information, this option causes reads of sensitive ++ /proc/<pid> entries where the file descriptor was opened in a different ++ task than the one performing the read. Such attempts are logged. ++ This option also limits argv/env strings for suid/sgid binaries ++ to 512KB to prevent a complete exhaustion of the stack entropy provided ++ by ASLR. Finally, it places an 8MB stack resource limit on suid/sgid ++ binaries to prevent alternative mmap layouts from being abused. ++ ++ If you use PaX it is essential that you say Y here as it closes up ++ several holes that make full ASLR useless locally. ++ ++config GRKERNSEC_BRUTE ++ bool "Deter exploit bruteforcing" ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ If you say Y here, attempts to bruteforce exploits against forking ++ daemons such as apache or sshd, as well as against suid/sgid binaries ++ will be deterred. When a child of a forking daemon is killed by PaX ++ or crashes due to an illegal instruction or other suspicious signal, ++ the parent process will be delayed 30 seconds upon every subsequent ++ fork until the administrator is able to assess the situation and ++ restart the daemon. ++ In the suid/sgid case, the attempt is logged, the user has all their ++ processes terminated, and they are prevented from executing any further ++ processes for 15 minutes. ++ It is recommended that you also enable signal logging in the auditing ++ section so that logs are generated when a process triggers a suspicious ++ signal. ++ If the sysctl option is enabled, a sysctl option with name ++ "deter_bruteforce" is created. ++ ++ ++config GRKERNSEC_MODHARDEN ++ bool "Harden module auto-loading" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on MODULES ++ help ++ If you say Y here, module auto-loading in response to use of some ++ feature implemented by an unloaded module will be restricted to ++ root users. Enabling this option helps defend against attacks ++ by unprivileged users who abuse the auto-loading behavior to ++ cause a vulnerable module to load that is then exploited. ++ ++ If this option prevents a legitimate use of auto-loading for a ++ non-root user, the administrator can execute modprobe manually ++ with the exact name of the module mentioned in the alert log. ++ Alternatively, the administrator can add the module to the list ++ of modules loaded at boot by modifying init scripts. ++ ++ Modification of init scripts will most likely be needed on ++ Ubuntu servers with encrypted home directory support enabled, ++ as the first non-root user logging in will cause the ecb(aes), ++ ecb(aes)-all, cbc(aes), and cbc(aes)-all modules to be loaded. ++ ++config GRKERNSEC_HIDESYM ++ bool "Hide kernel symbols" ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ If you say Y here, getting information on loaded modules, and ++ displaying all kernel symbols through a syscall will be restricted ++ to users with CAP_SYS_MODULE. For software compatibility reasons, ++ /proc/kallsyms will be restricted to the root user. The RBAC ++ system can hide that entry even from root. ++ ++ This option also prevents leaking of kernel addresses through ++ several /proc entries. ++ ++ Note that this option is only effective provided the following ++ conditions are met: ++ 1) The kernel using grsecurity is not precompiled by some distribution ++ 2) You have also enabled GRKERNSEC_DMESG ++ 3) You are using the RBAC system and hiding other files such as your ++ kernel image and System.map. Alternatively, enabling this option ++ causes the permissions on /boot, /lib/modules, and the kernel ++ source directory to change at compile time to prevent ++ reading by non-root users. ++ If the above conditions are met, this option will aid in providing a ++ useful protection against local kernel exploitation of overflows ++ and arbitrary read/write vulnerabilities. ++ ++config GRKERNSEC_KERN_LOCKOUT ++ bool "Active kernel exploit response" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on X86 || ARM || PPC || SPARC ++ help ++ If you say Y here, when a PaX alert is triggered due to suspicious ++ activity in the kernel (from KERNEXEC/UDEREF/USERCOPY) ++ or an OOPS occurs due to bad memory accesses, instead of just ++ terminating the offending process (and potentially allowing ++ a subsequent exploit from the same user), we will take one of two ++ actions: ++ If the user was root, we will panic the system ++ If the user was non-root, we will log the attempt, terminate ++ all processes owned by the user, then prevent them from creating ++ any new processes until the system is restarted ++ This deters repeated kernel exploitation/bruteforcing attempts ++ and is useful for later forensics. ++ ++endmenu ++menu "Role Based Access Control Options" ++depends on GRKERNSEC ++ ++config GRKERNSEC_RBAC_DEBUG ++ bool ++ ++config GRKERNSEC_NO_RBAC ++ bool "Disable RBAC system" ++ help ++ If you say Y here, the /dev/grsec device will be removed from the kernel, ++ preventing the RBAC system from being enabled. You should only say Y ++ here if you have no intention of using the RBAC system, so as to prevent ++ an attacker with root access from misusing the RBAC system to hide files ++ and processes when loadable module support and /dev/[k]mem have been ++ locked down. ++ ++config GRKERNSEC_ACL_HIDEKERN ++ bool "Hide kernel processes" ++ help ++ If you say Y here, all kernel threads will be hidden to all ++ processes but those whose subject has the "view hidden processes" ++ flag. ++ ++config GRKERNSEC_ACL_MAXTRIES ++ int "Maximum tries before password lockout" ++ default 3 ++ help ++ This option enforces the maximum number of times a user can attempt ++ to authorize themselves with the grsecurity RBAC system before being ++ denied the ability to attempt authorization again for a specified time. ++ The lower the number, the harder it will be to brute-force a password. ++ ++config GRKERNSEC_ACL_TIMEOUT ++ int "Time to wait after max password tries, in seconds" ++ default 30 ++ help ++ This option specifies the time the user must wait after attempting to ++ authorize to the RBAC system with the maximum number of invalid ++ passwords. The higher the number, the harder it will be to brute-force ++ a password. ++ ++endmenu ++menu "Filesystem Protections" ++depends on GRKERNSEC ++ ++config GRKERNSEC_PROC ++ bool "Proc restrictions" ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ If you say Y here, the permissions of the /proc filesystem ++ will be altered to enhance system security and privacy. You MUST ++ choose either a user only restriction or a user and group restriction. ++ Depending upon the option you choose, you can either restrict users to ++ see only the processes they themselves run, or choose a group that can ++ view all processes and files normally restricted to root if you choose ++ the "restrict to user only" option. NOTE: If you're running identd or ++ ntpd as a non-root user, you will have to run it as the group you ++ specify here. ++ ++config GRKERNSEC_PROC_USER ++ bool "Restrict /proc to user only" ++ depends on GRKERNSEC_PROC ++ help ++ If you say Y here, non-root users will only be able to view their own ++ processes, and restricts them from viewing network-related information, ++ and viewing kernel symbol and module information. ++ ++config GRKERNSEC_PROC_USERGROUP ++ bool "Allow special group" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC_PROC && !GRKERNSEC_PROC_USER ++ help ++ If you say Y here, you will be able to select a group that will be ++ able to view all processes and network-related information. If you've ++ enabled GRKERNSEC_HIDESYM, kernel and symbol information may still ++ remain hidden. This option is useful if you want to run identd as ++ a non-root user. ++ ++config GRKERNSEC_PROC_GID ++ int "GID for special group" ++ depends on GRKERNSEC_PROC_USERGROUP ++ default 1001 ++ ++config GRKERNSEC_PROC_ADD ++ bool "Additional restrictions" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC_PROC_USER || GRKERNSEC_PROC_USERGROUP ++ help ++ If you say Y here, additional restrictions will be placed on ++ /proc that keep normal users from viewing device information and ++ slabinfo information that could be useful for exploits. ++ ++config GRKERNSEC_LINK ++ bool "Linking restrictions" ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ If you say Y here, /tmp race exploits will be prevented, since users ++ will no longer be able to follow symlinks owned by other users in ++ world-writable +t directories (e.g. /tmp), unless the owner of the ++ symlink is the owner of the directory. users will also not be ++ able to hardlink to files they do not own. If the sysctl option is ++ enabled, a sysctl option with name "linking_restrictions" is created. ++ ++config GRKERNSEC_SYMLINKOWN ++ bool "Kernel-enforced SymlinksIfOwnerMatch" ++ default y if GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_SERVER ++ help ++ Apache's SymlinksIfOwnerMatch option has an inherent race condition ++ that prevents it from being used as a security feature. As Apache ++ verifies the symlink by performing a stat() against the target of ++ the symlink before it is followed, an attacker can setup a symlink ++ to point to a same-owned file, then replace the symlink with one ++ that targets another user's file just after Apache "validates" the ++ symlink -- a classic TOCTOU race. If you say Y here, a complete, ++ race-free replacement for Apache's "SymlinksIfOwnerMatch" option ++ will be in place for the group you specify. If the sysctl option ++ is enabled, a sysctl option with name "enforce_symlinksifowner" is ++ created. ++ ++config GRKERNSEC_SYMLINKOWN_GID ++ int "GID for users with kernel-enforced SymlinksIfOwnerMatch" ++ depends on GRKERNSEC_SYMLINKOWN ++ default 1006 ++ help ++ Setting this GID determines what group kernel-enforced ++ SymlinksIfOwnerMatch will be enabled for. If the sysctl option ++ is enabled, a sysctl option with name "symlinkown_gid" is created. ++ ++config GRKERNSEC_FIFO ++ bool "FIFO restrictions" ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ If you say Y here, users will not be able to write to FIFOs they don't ++ own in world-writable +t directories (e.g. /tmp), unless the owner of ++ the FIFO is the same owner of the directory it's held in. If the sysctl ++ option is enabled, a sysctl option with name "fifo_restrictions" is ++ created. ++ ++config GRKERNSEC_SYSFS_RESTRICT ++ bool "Sysfs/debugfs restriction" ++ default y if (GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_SERVER) ++ depends on SYSFS ++ help ++ If you say Y here, sysfs (the pseudo-filesystem mounted at /sys) and ++ any filesystem normally mounted under it (e.g. debugfs) will be ++ mostly accessible only by root. These filesystems generally provide access ++ to hardware and debug information that isn't appropriate for unprivileged ++ users of the system. Sysfs and debugfs have also become a large source ++ of new vulnerabilities, ranging from infoleaks to local compromise. ++ There has been very little oversight with an eye toward security involved ++ in adding new exporters of information to these filesystems, so their ++ use is discouraged. ++ For reasons of compatibility, a few directories have been whitelisted ++ for access by non-root users: ++ /sys/fs/selinux ++ /sys/fs/fuse ++ /sys/devices/system/cpu ++ ++config GRKERNSEC_ROFS ++ bool "Runtime read-only mount protection" ++ help ++ If you say Y here, a sysctl option with name "romount_protect" will ++ be created. By setting this option to 1 at runtime, filesystems ++ will be protected in the following ways: ++ * No new writable mounts will be allowed ++ * Existing read-only mounts won't be able to be remounted read/write ++ * Write operations will be denied on all block devices ++ This option acts independently of grsec_lock: once it is set to 1, ++ it cannot be turned off. Therefore, please be mindful of the resulting ++ behavior if this option is enabled in an init script on a read-only ++ filesystem. This feature is mainly intended for secure embedded systems. ++ ++config GRKERNSEC_CHROOT ++ bool "Chroot jail restrictions" ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ If you say Y here, you will be able to choose several options that will ++ make breaking out of a chrooted jail much more difficult. If you ++ encounter no software incompatibilities with the following options, it ++ is recommended that you enable each one. ++ ++config GRKERNSEC_CHROOT_MOUNT ++ bool "Deny mounts" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC_CHROOT ++ help ++ If you say Y here, processes inside a chroot will not be able to ++ mount or remount filesystems. If the sysctl option is enabled, a ++ sysctl option with name "chroot_deny_mount" is created. ++ ++config GRKERNSEC_CHROOT_DOUBLE ++ bool "Deny double-chroots" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC_CHROOT ++ help ++ If you say Y here, processes inside a chroot will not be able to chroot ++ again outside the chroot. This is a widely used method of breaking ++ out of a chroot jail and should not be allowed. If the sysctl ++ option is enabled, a sysctl option with name ++ "chroot_deny_chroot" is created. ++ ++config GRKERNSEC_CHROOT_PIVOT ++ bool "Deny pivot_root in chroot" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC_CHROOT ++ help ++ If you say Y here, processes inside a chroot will not be able to use ++ a function called pivot_root() that was introduced in Linux 2.3.41. It ++ works similar to chroot in that it changes the root filesystem. This ++ function could be misused in a chrooted process to attempt to break out ++ of the chroot, and therefore should not be allowed. If the sysctl ++ option is enabled, a sysctl option with name "chroot_deny_pivot" is ++ created. ++ ++config GRKERNSEC_CHROOT_CHDIR ++ bool "Enforce chdir(\"/\") on all chroots" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC_CHROOT ++ help ++ If you say Y here, the current working directory of all newly-chrooted ++ applications will be set to the the root directory of the chroot. ++ The man page on chroot(2) states: ++ Note that this call does not change the current working ++ directory, so that `.' can be outside the tree rooted at ++ `/'. In particular, the super-user can escape from a ++ `chroot jail' by doing `mkdir foo; chroot foo; cd ..'. ++ ++ It is recommended that you say Y here, since it's not known to break ++ any software. If the sysctl option is enabled, a sysctl option with ++ name "chroot_enforce_chdir" is created. ++ ++config GRKERNSEC_CHROOT_CHMOD ++ bool "Deny (f)chmod +s" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC_CHROOT ++ help ++ If you say Y here, processes inside a chroot will not be able to chmod ++ or fchmod files to make them have suid or sgid bits. This protects ++ against another published method of breaking a chroot. If the sysctl ++ option is enabled, a sysctl option with name "chroot_deny_chmod" is ++ created. ++ ++config GRKERNSEC_CHROOT_FCHDIR ++ bool "Deny fchdir out of chroot" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC_CHROOT ++ help ++ If you say Y here, a well-known method of breaking chroots by fchdir'ing ++ to a file descriptor of the chrooting process that points to a directory ++ outside the filesystem will be stopped. If the sysctl option ++ is enabled, a sysctl option with name "chroot_deny_fchdir" is created. ++ ++config GRKERNSEC_CHROOT_MKNOD ++ bool "Deny mknod" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC_CHROOT ++ help ++ If you say Y here, processes inside a chroot will not be allowed to ++ mknod. The problem with using mknod inside a chroot is that it ++ would allow an attacker to create a device entry that is the same ++ as one on the physical root of your system, which could range from ++ anything from the console device to a device for your harddrive (which ++ they could then use to wipe the drive or steal data). It is recommended ++ that you say Y here, unless you run into software incompatibilities. ++ If the sysctl option is enabled, a sysctl option with name ++ "chroot_deny_mknod" is created. ++ ++config GRKERNSEC_CHROOT_SHMAT ++ bool "Deny shmat() out of chroot" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC_CHROOT ++ help ++ If you say Y here, processes inside a chroot will not be able to attach ++ to shared memory segments that were created outside of the chroot jail. ++ It is recommended that you say Y here. If the sysctl option is enabled, ++ a sysctl option with name "chroot_deny_shmat" is created. ++ ++config GRKERNSEC_CHROOT_UNIX ++ bool "Deny access to abstract AF_UNIX sockets out of chroot" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC_CHROOT ++ help ++ If you say Y here, processes inside a chroot will not be able to ++ connect to abstract (meaning not belonging to a filesystem) Unix ++ domain sockets that were bound outside of a chroot. It is recommended ++ that you say Y here. If the sysctl option is enabled, a sysctl option ++ with name "chroot_deny_unix" is created. ++ ++config GRKERNSEC_CHROOT_FINDTASK ++ bool "Protect outside processes" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC_CHROOT ++ help ++ If you say Y here, processes inside a chroot will not be able to ++ kill, send signals with fcntl, ptrace, capget, getpgid, setpgid, ++ getsid, or view any process outside of the chroot. If the sysctl ++ option is enabled, a sysctl option with name "chroot_findtask" is ++ created. ++ ++config GRKERNSEC_CHROOT_NICE ++ bool "Restrict priority changes" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC_CHROOT ++ help ++ If you say Y here, processes inside a chroot will not be able to raise ++ the priority of processes in the chroot, or alter the priority of ++ processes outside the chroot. This provides more security than simply ++ removing CAP_SYS_NICE from the process' capability set. If the ++ sysctl option is enabled, a sysctl option with name "chroot_restrict_nice" ++ is created. ++ ++config GRKERNSEC_CHROOT_SYSCTL ++ bool "Deny sysctl writes" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC_CHROOT ++ help ++ If you say Y here, an attacker in a chroot will not be able to ++ write to sysctl entries, either by sysctl(2) or through a /proc ++ interface. It is strongly recommended that you say Y here. If the ++ sysctl option is enabled, a sysctl option with name ++ "chroot_deny_sysctl" is created. ++ ++config GRKERNSEC_CHROOT_CAPS ++ bool "Capability restrictions" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC_CHROOT ++ help ++ If you say Y here, the capabilities on all processes within a ++ chroot jail will be lowered to stop module insertion, raw i/o, ++ system and net admin tasks, rebooting the system, modifying immutable ++ files, modifying IPC owned by another, and changing the system time. ++ This is left an option because it can break some apps. Disable this ++ if your chrooted apps are having problems performing those kinds of ++ tasks. If the sysctl option is enabled, a sysctl option with ++ name "chroot_caps" is created. ++ ++endmenu ++menu "Kernel Auditing" ++depends on GRKERNSEC ++ ++config GRKERNSEC_AUDIT_GROUP ++ bool "Single group for auditing" ++ help ++ If you say Y here, the exec, chdir, and (un)mount logging features ++ will only operate on a group you specify. This option is recommended ++ if you only want to watch certain users instead of having a large ++ amount of logs from the entire system. If the sysctl option is enabled, ++ a sysctl option with name "audit_group" is created. ++ ++config GRKERNSEC_AUDIT_GID ++ int "GID for auditing" ++ depends on GRKERNSEC_AUDIT_GROUP ++ default 1007 ++ ++config GRKERNSEC_EXECLOG ++ bool "Exec logging" ++ help ++ If you say Y here, all execve() calls will be logged (since the ++ other exec*() calls are frontends to execve(), all execution ++ will be logged). Useful for shell-servers that like to keep track ++ of their users. If the sysctl option is enabled, a sysctl option with ++ name "exec_logging" is created. ++ WARNING: This option when enabled will produce a LOT of logs, especially ++ on an active system. ++ ++config GRKERNSEC_RESLOG ++ bool "Resource logging" ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ If you say Y here, all attempts to overstep resource limits will ++ be logged with the resource name, the requested size, and the current ++ limit. It is highly recommended that you say Y here. If the sysctl ++ option is enabled, a sysctl option with name "resource_logging" is ++ created. If the RBAC system is enabled, the sysctl value is ignored. ++ ++config GRKERNSEC_CHROOT_EXECLOG ++ bool "Log execs within chroot" ++ help ++ If you say Y here, all executions inside a chroot jail will be logged ++ to syslog. This can cause a large amount of logs if certain ++ applications (eg. djb's daemontools) are installed on the system, and ++ is therefore left as an option. If the sysctl option is enabled, a ++ sysctl option with name "chroot_execlog" is created. ++ ++config GRKERNSEC_AUDIT_PTRACE ++ bool "Ptrace logging" ++ help ++ If you say Y here, all attempts to attach to a process via ptrace ++ will be logged. If the sysctl option is enabled, a sysctl option ++ with name "audit_ptrace" is created. ++ ++config GRKERNSEC_AUDIT_CHDIR ++ bool "Chdir logging" ++ help ++ If you say Y here, all chdir() calls will be logged. If the sysctl ++ option is enabled, a sysctl option with name "audit_chdir" is created. ++ ++config GRKERNSEC_AUDIT_MOUNT ++ bool "(Un)Mount logging" ++ help ++ If you say Y here, all mounts and unmounts will be logged. If the ++ sysctl option is enabled, a sysctl option with name "audit_mount" is ++ created. ++ ++config GRKERNSEC_SIGNAL ++ bool "Signal logging" ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ If you say Y here, certain important signals will be logged, such as ++ SIGSEGV, which will as a result inform you of when a error in a program ++ occurred, which in some cases could mean a possible exploit attempt. ++ If the sysctl option is enabled, a sysctl option with name ++ "signal_logging" is created. ++ ++config GRKERNSEC_FORKFAIL ++ bool "Fork failure logging" ++ help ++ If you say Y here, all failed fork() attempts will be logged. ++ This could suggest a fork bomb, or someone attempting to overstep ++ their process limit. If the sysctl option is enabled, a sysctl option ++ with name "forkfail_logging" is created. ++ ++config GRKERNSEC_TIME ++ bool "Time change logging" ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ If you say Y here, any changes of the system clock will be logged. ++ If the sysctl option is enabled, a sysctl option with name ++ "timechange_logging" is created. ++ ++config GRKERNSEC_PROC_IPADDR ++ bool "/proc/<pid>/ipaddr support" ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ If you say Y here, a new entry will be added to each /proc/<pid> ++ directory that contains the IP address of the person using the task. ++ The IP is carried across local TCP and AF_UNIX stream sockets. ++ This information can be useful for IDS/IPSes to perform remote response ++ to a local attack. The entry is readable by only the owner of the ++ process (and root if he has CAP_DAC_OVERRIDE, which can be removed via ++ the RBAC system), and thus does not create privacy concerns. ++ ++config GRKERNSEC_RWXMAP_LOG ++ bool 'Denied RWX mmap/mprotect logging' ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on PAX_MPROTECT && !PAX_EMUPLT && !PAX_EMUSIGRT ++ help ++ If you say Y here, calls to mmap() and mprotect() with explicit ++ usage of PROT_WRITE and PROT_EXEC together will be logged when ++ denied by the PAX_MPROTECT feature. If the sysctl option is ++ enabled, a sysctl option with name "rwxmap_logging" is created. ++ ++config GRKERNSEC_AUDIT_TEXTREL ++ bool 'ELF text relocations logging (READ HELP)' ++ depends on PAX_MPROTECT ++ help ++ If you say Y here, text relocations will be logged with the filename ++ of the offending library or binary. The purpose of the feature is ++ to help Linux distribution developers get rid of libraries and ++ binaries that need text relocations which hinder the future progress ++ of PaX. Only Linux distribution developers should say Y here, and ++ never on a production machine, as this option creates an information ++ leak that could aid an attacker in defeating the randomization of ++ a single memory region. If the sysctl option is enabled, a sysctl ++ option with name "audit_textrel" is created. ++ ++endmenu ++ ++menu "Executable Protections" ++depends on GRKERNSEC ++ ++config GRKERNSEC_DMESG ++ bool "Dmesg(8) restriction" ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ If you say Y here, non-root users will not be able to use dmesg(8) ++ to view up to the last 4kb of messages in the kernel's log buffer. ++ The kernel's log buffer often contains kernel addresses and other ++ identifying information useful to an attacker in fingerprinting a ++ system for a targeted exploit. ++ If the sysctl option is enabled, a sysctl option with name "dmesg" is ++ created. ++ ++config GRKERNSEC_HARDEN_PTRACE ++ bool "Deter ptrace-based process snooping" ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ If you say Y here, TTY sniffers and other malicious monitoring ++ programs implemented through ptrace will be defeated. If you ++ have been using the RBAC system, this option has already been ++ enabled for several years for all users, with the ability to make ++ fine-grained exceptions. ++ ++ This option only affects the ability of non-root users to ptrace ++ processes that are not a descendent of the ptracing process. ++ This means that strace ./binary and gdb ./binary will still work, ++ but attaching to arbitrary processes will not. If the sysctl ++ option is enabled, a sysctl option with name "harden_ptrace" is ++ created. ++ ++config GRKERNSEC_PTRACE_READEXEC ++ bool "Require read access to ptrace sensitive binaries" ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ If you say Y here, unprivileged users will not be able to ptrace unreadable ++ binaries. This option is useful in environments that ++ remove the read bits (e.g. file mode 4711) from suid binaries to ++ prevent infoleaking of their contents. This option adds ++ consistency to the use of that file mode, as the binary could normally ++ be read out when run without privileges while ptracing. ++ ++ If the sysctl option is enabled, a sysctl option with name "ptrace_readexec" ++ is created. ++ ++config GRKERNSEC_SETXID ++ bool "Enforce consistent multithreaded privileges" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on (X86 || SPARC64 || PPC || ARM || MIPS) ++ help ++ If you say Y here, a change from a root uid to a non-root uid ++ in a multithreaded application will cause the resulting uids, ++ gids, supplementary groups, and capabilities in that thread ++ to be propagated to the other threads of the process. In most ++ cases this is unnecessary, as glibc will emulate this behavior ++ on behalf of the application. Other libcs do not act in the ++ same way, allowing the other threads of the process to continue ++ running with root privileges. If the sysctl option is enabled, ++ a sysctl option with name "consistent_setxid" is created. ++ ++config GRKERNSEC_TPE ++ bool "Trusted Path Execution (TPE)" ++ default y if GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_SERVER ++ help ++ If you say Y here, you will be able to choose a gid to add to the ++ supplementary groups of users you want to mark as "untrusted." ++ These users will not be able to execute any files that are not in ++ root-owned directories writable only by root. If the sysctl option ++ is enabled, a sysctl option with name "tpe" is created. ++ ++config GRKERNSEC_TPE_ALL ++ bool "Partially restrict all non-root users" ++ depends on GRKERNSEC_TPE ++ help ++ If you say Y here, all non-root users will be covered under ++ a weaker TPE restriction. This is separate from, and in addition to, ++ the main TPE options that you have selected elsewhere. Thus, if a ++ "trusted" GID is chosen, this restriction applies to even that GID. ++ Under this restriction, all non-root users will only be allowed to ++ execute files in directories they own that are not group or ++ world-writable, or in directories owned by root and writable only by ++ root. If the sysctl option is enabled, a sysctl option with name ++ "tpe_restrict_all" is created. ++ ++config GRKERNSEC_TPE_INVERT ++ bool "Invert GID option" ++ depends on GRKERNSEC_TPE ++ help ++ If you say Y here, the group you specify in the TPE configuration will ++ decide what group TPE restrictions will be *disabled* for. This ++ option is useful if you want TPE restrictions to be applied to most ++ users on the system. If the sysctl option is enabled, a sysctl option ++ with name "tpe_invert" is created. Unlike other sysctl options, this ++ entry will default to on for backward-compatibility. ++ ++config GRKERNSEC_TPE_GID ++ int "GID for untrusted users" ++ depends on GRKERNSEC_TPE && !GRKERNSEC_TPE_INVERT ++ default 1005 ++ help ++ Setting this GID determines what group TPE restrictions will be ++ *enabled* for. If the sysctl option is enabled, a sysctl option ++ with name "tpe_gid" is created. ++ ++config GRKERNSEC_TPE_GID ++ int "GID for trusted users" ++ depends on GRKERNSEC_TPE && GRKERNSEC_TPE_INVERT ++ default 1005 ++ help ++ Setting this GID determines what group TPE restrictions will be ++ *disabled* for. If the sysctl option is enabled, a sysctl option ++ with name "tpe_gid" is created. ++ ++endmenu ++menu "Network Protections" ++depends on GRKERNSEC ++ ++config GRKERNSEC_RANDNET ++ bool "Larger entropy pools" ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ If you say Y here, the entropy pools used for many features of Linux ++ and grsecurity will be doubled in size. Since several grsecurity ++ features use additional randomness, it is recommended that you say Y ++ here. Saying Y here has a similar effect as modifying ++ /proc/sys/kernel/random/poolsize. ++ ++config GRKERNSEC_BLACKHOLE ++ bool "TCP/UDP blackhole and LAST_ACK DoS prevention" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on NET ++ help ++ If you say Y here, neither TCP resets nor ICMP ++ destination-unreachable packets will be sent in response to packets ++ sent to ports for which no associated listening process exists. ++ This feature supports both IPV4 and IPV6 and exempts the ++ loopback interface from blackholing. Enabling this feature ++ makes a host more resilient to DoS attacks and reduces network ++ visibility against scanners. ++ ++ The blackhole feature as-implemented is equivalent to the FreeBSD ++ blackhole feature, as it prevents RST responses to all packets, not ++ just SYNs. Under most application behavior this causes no ++ problems, but applications (like haproxy) may not close certain ++ connections in a way that cleanly terminates them on the remote ++ end, leaving the remote host in LAST_ACK state. Because of this ++ side-effect and to prevent intentional LAST_ACK DoSes, this ++ feature also adds automatic mitigation against such attacks. ++ The mitigation drastically reduces the amount of time a socket ++ can spend in LAST_ACK state. If you're using haproxy and not ++ all servers it connects to have this option enabled, consider ++ disabling this feature on the haproxy host. ++ ++ If the sysctl option is enabled, two sysctl options with names ++ "ip_blackhole" and "lastack_retries" will be created. ++ While "ip_blackhole" takes the standard zero/non-zero on/off ++ toggle, "lastack_retries" uses the same kinds of values as ++ "tcp_retries1" and "tcp_retries2". The default value of 4 ++ prevents a socket from lasting more than 45 seconds in LAST_ACK ++ state. ++ ++config GRKERNSEC_SOCKET ++ bool "Socket restrictions" ++ depends on NET ++ help ++ If you say Y here, you will be able to choose from several options. ++ If you assign a GID on your system and add it to the supplementary ++ groups of users you want to restrict socket access to, this patch ++ will perform up to three things, based on the option(s) you choose. ++ ++config GRKERNSEC_SOCKET_ALL ++ bool "Deny any sockets to group" ++ depends on GRKERNSEC_SOCKET ++ help ++ If you say Y here, you will be able to choose a GID of whose users will ++ be unable to connect to other hosts from your machine or run server ++ applications from your machine. If the sysctl option is enabled, a ++ sysctl option with name "socket_all" is created. ++ ++config GRKERNSEC_SOCKET_ALL_GID ++ int "GID to deny all sockets for" ++ depends on GRKERNSEC_SOCKET_ALL ++ default 1004 ++ help ++ Here you can choose the GID to disable socket access for. Remember to ++ add the users you want socket access disabled for to the GID ++ specified here. If the sysctl option is enabled, a sysctl option ++ with name "socket_all_gid" is created. ++ ++config GRKERNSEC_SOCKET_CLIENT ++ bool "Deny client sockets to group" ++ depends on GRKERNSEC_SOCKET ++ help ++ If you say Y here, you will be able to choose a GID of whose users will ++ be unable to connect to other hosts from your machine, but will be ++ able to run servers. If this option is enabled, all users in the group ++ you specify will have to use passive mode when initiating ftp transfers ++ from the shell on your machine. If the sysctl option is enabled, a ++ sysctl option with name "socket_client" is created. ++ ++config GRKERNSEC_SOCKET_CLIENT_GID ++ int "GID to deny client sockets for" ++ depends on GRKERNSEC_SOCKET_CLIENT ++ default 1003 ++ help ++ Here you can choose the GID to disable client socket access for. ++ Remember to add the users you want client socket access disabled for to ++ the GID specified here. If the sysctl option is enabled, a sysctl ++ option with name "socket_client_gid" is created. ++ ++config GRKERNSEC_SOCKET_SERVER ++ bool "Deny server sockets to group" ++ depends on GRKERNSEC_SOCKET ++ help ++ If you say Y here, you will be able to choose a GID of whose users will ++ be unable to run server applications from your machine. If the sysctl ++ option is enabled, a sysctl option with name "socket_server" is created. ++ ++config GRKERNSEC_SOCKET_SERVER_GID ++ int "GID to deny server sockets for" ++ depends on GRKERNSEC_SOCKET_SERVER ++ default 1002 ++ help ++ Here you can choose the GID to disable server socket access for. ++ Remember to add the users you want server socket access disabled for to ++ the GID specified here. If the sysctl option is enabled, a sysctl ++ option with name "socket_server_gid" is created. ++ ++endmenu ++menu "Sysctl Support" ++depends on GRKERNSEC && SYSCTL ++ ++config GRKERNSEC_SYSCTL ++ bool "Sysctl support" ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ If you say Y here, you will be able to change the options that ++ grsecurity runs with at bootup, without having to recompile your ++ kernel. You can echo values to files in /proc/sys/kernel/grsecurity ++ to enable (1) or disable (0) various features. All the sysctl entries ++ are mutable until the "grsec_lock" entry is set to a non-zero value. ++ All features enabled in the kernel configuration are disabled at boot ++ if you do not say Y to the "Turn on features by default" option. ++ All options should be set at startup, and the grsec_lock entry should ++ be set to a non-zero value after all the options are set. ++ *THIS IS EXTREMELY IMPORTANT* ++ ++config GRKERNSEC_SYSCTL_DISTRO ++ bool "Extra sysctl support for distro makers (READ HELP)" ++ depends on GRKERNSEC_SYSCTL && GRKERNSEC_IO ++ help ++ If you say Y here, additional sysctl options will be created ++ for features that affect processes running as root. Therefore, ++ it is critical when using this option that the grsec_lock entry be ++ enabled after boot. Only distros with prebuilt kernel packages ++ with this option enabled that can ensure grsec_lock is enabled ++ after boot should use this option. ++ *Failure to set grsec_lock after boot makes all grsec features ++ this option covers useless* ++ ++ Currently this option creates the following sysctl entries: ++ "Disable Privileged I/O": "disable_priv_io" ++ ++config GRKERNSEC_SYSCTL_ON ++ bool "Turn on features by default" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC_SYSCTL ++ help ++ If you say Y here, instead of having all features enabled in the ++ kernel configuration disabled at boot time, the features will be ++ enabled at boot time. It is recommended you say Y here unless ++ there is some reason you would want all sysctl-tunable features to ++ be disabled by default. As mentioned elsewhere, it is important ++ to enable the grsec_lock entry once you have finished modifying ++ the sysctl entries. ++ ++endmenu ++menu "Logging Options" ++depends on GRKERNSEC ++ ++config GRKERNSEC_FLOODTIME ++ int "Seconds in between log messages (minimum)" ++ default 10 ++ help ++ This option allows you to enforce the number of seconds between ++ grsecurity log messages. The default should be suitable for most ++ people, however, if you choose to change it, choose a value small enough ++ to allow informative logs to be produced, but large enough to ++ prevent flooding. ++ ++config GRKERNSEC_FLOODBURST ++ int "Number of messages in a burst (maximum)" ++ default 6 ++ help ++ This option allows you to choose the maximum number of messages allowed ++ within the flood time interval you chose in a separate option. The ++ default should be suitable for most people, however if you find that ++ many of your logs are being interpreted as flooding, you may want to ++ raise this value. ++ ++endmenu +diff --git a/grsecurity/Makefile b/grsecurity/Makefile +new file mode 100644 +index 0000000..1b9afa9 +--- /dev/null ++++ b/grsecurity/Makefile +@@ -0,0 +1,38 @@ ++# grsecurity's ACL system was originally written in 2001 by Michael Dalton ++# during 2001-2009 it has been completely redesigned by Brad Spengler ++# into an RBAC system ++# ++# All code in this directory and various hooks inserted throughout the kernel ++# are copyright Brad Spengler - Open Source Security, Inc., and released ++# under the GPL v2 or higher ++ ++KBUILD_CFLAGS += -Werror ++ ++obj-y = grsec_chdir.o grsec_chroot.o grsec_exec.o grsec_fifo.o grsec_fork.o \ ++ grsec_mount.o grsec_sig.o grsec_sysctl.o \ ++ grsec_time.o grsec_tpe.o grsec_link.o grsec_pax.o grsec_ptrace.o ++ ++obj-$(CONFIG_GRKERNSEC) += grsec_init.o grsum.o gracl.o gracl_segv.o \ ++ gracl_cap.o gracl_alloc.o gracl_shm.o grsec_mem.o gracl_fs.o \ ++ gracl_learn.o grsec_log.o ++obj-$(CONFIG_GRKERNSEC_RESLOG) += gracl_res.o ++ ++ifdef CONFIG_NET ++obj-y += grsec_sock.o ++obj-$(CONFIG_GRKERNSEC) += gracl_ip.o ++endif ++ ++ifndef CONFIG_GRKERNSEC ++obj-y += grsec_disabled.o ++endif ++ ++ifdef CONFIG_GRKERNSEC_HIDESYM ++extra-y := grsec_hidesym.o ++$(obj)/grsec_hidesym.o: ++ @-chmod -f 500 /boot ++ @-chmod -f 500 /lib/modules ++ @-chmod -f 500 /lib64/modules ++ @-chmod -f 500 /lib32/modules ++ @-chmod -f 700 . ++ @echo ' grsec: protected kernel image paths' ++endif +diff --git a/grsecurity/gracl.c b/grsecurity/gracl.c +new file mode 100644 +index 0000000..7a5922f +--- /dev/null ++++ b/grsecurity/gracl.c +@@ -0,0 +1,4016 @@ ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/sched.h> ++#include <linux/mm.h> ++#include <linux/file.h> ++#include <linux/fs.h> ++#include <linux/namei.h> ++#include <linux/mount.h> ++#include <linux/tty.h> ++#include <linux/proc_fs.h> ++#include <linux/lglock.h> ++#include <linux/slab.h> ++#include <linux/vmalloc.h> ++#include <linux/types.h> ++#include <linux/sysctl.h> ++#include <linux/netdevice.h> ++#include <linux/ptrace.h> ++#include <linux/gracl.h> ++#include <linux/gralloc.h> ++#include <linux/security.h> ++#include <linux/grinternal.h> ++#include <linux/pid_namespace.h> ++#include <linux/stop_machine.h> ++#include <linux/fdtable.h> ++#include <linux/percpu.h> ++#include "../fs/mount.h" ++ ++#include <asm/uaccess.h> ++#include <asm/errno.h> ++#include <asm/mman.h> ++ ++static struct acl_role_db acl_role_set; ++static struct name_db name_set; ++static struct inodev_db inodev_set; ++ ++/* for keeping track of userspace pointers used for subjects, so we ++ can share references in the kernel as well ++*/ ++ ++static struct path real_root; ++ ++static struct acl_subj_map_db subj_map_set; ++ ++static struct acl_role_label *default_role; ++ ++static struct acl_role_label *role_list; ++ ++static u16 acl_sp_role_value; ++ ++extern char *gr_shared_page[4]; ++static DEFINE_MUTEX(gr_dev_mutex); ++DEFINE_RWLOCK(gr_inode_lock); ++ ++struct gr_arg *gr_usermode; ++ ++static unsigned int gr_status __read_only = GR_STATUS_INIT; ++ ++extern int chkpw(struct gr_arg *entry, unsigned char *salt, unsigned char *sum); ++extern void gr_clear_learn_entries(void); ++ ++#ifdef CONFIG_GRKERNSEC_RESLOG ++extern void gr_log_resource(const struct task_struct *task, ++ const int res, const unsigned long wanted, const int gt); ++#endif ++ ++unsigned char *gr_system_salt; ++unsigned char *gr_system_sum; ++ ++static struct sprole_pw **acl_special_roles = NULL; ++static __u16 num_sprole_pws = 0; ++ ++static struct acl_role_label *kernel_role = NULL; ++ ++static unsigned int gr_auth_attempts = 0; ++static unsigned long gr_auth_expires = 0UL; ++ ++#ifdef CONFIG_NET ++extern struct vfsmount *sock_mnt; ++#endif ++ ++extern struct vfsmount *pipe_mnt; ++extern struct vfsmount *shm_mnt; ++#ifdef CONFIG_HUGETLBFS ++extern struct vfsmount *hugetlbfs_vfsmount; ++#endif ++ ++static struct acl_object_label *fakefs_obj_rw; ++static struct acl_object_label *fakefs_obj_rwx; ++ ++extern int gr_init_uidset(void); ++extern void gr_free_uidset(void); ++extern void gr_remove_uid(uid_t uid); ++extern int gr_find_uid(uid_t uid); ++ ++DECLARE_BRLOCK(vfsmount_lock); ++ ++__inline__ int ++gr_acl_is_enabled(void) ++{ ++ return (gr_status & GR_READY); ++} ++ ++#ifdef CONFIG_BTRFS_FS ++extern dev_t get_btrfs_dev_from_inode(struct inode *inode); ++extern int btrfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat); ++#endif ++ ++static inline dev_t __get_dev(const struct dentry *dentry) ++{ ++#ifdef CONFIG_BTRFS_FS ++ if (dentry->d_inode->i_op && dentry->d_inode->i_op->getattr == &btrfs_getattr) ++ return get_btrfs_dev_from_inode(dentry->d_inode); ++ else ++#endif ++ return dentry->d_inode->i_sb->s_dev; ++} ++ ++dev_t gr_get_dev_from_dentry(struct dentry *dentry) ++{ ++ return __get_dev(dentry); ++} ++ ++static char gr_task_roletype_to_char(struct task_struct *task) ++{ ++ switch (task->role->roletype & ++ (GR_ROLE_DEFAULT | GR_ROLE_USER | GR_ROLE_GROUP | ++ GR_ROLE_SPECIAL)) { ++ case GR_ROLE_DEFAULT: ++ return 'D'; ++ case GR_ROLE_USER: ++ return 'U'; ++ case GR_ROLE_GROUP: ++ return 'G'; ++ case GR_ROLE_SPECIAL: ++ return 'S'; ++ } ++ ++ return 'X'; ++} ++ ++char gr_roletype_to_char(void) ++{ ++ return gr_task_roletype_to_char(current); ++} ++ ++__inline__ int ++gr_acl_tpe_check(void) ++{ ++ if (unlikely(!(gr_status & GR_READY))) ++ return 0; ++ if (current->role->roletype & GR_ROLE_TPE) ++ return 1; ++ else ++ return 0; ++} ++ ++int ++gr_handle_rawio(const struct inode *inode) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS ++ if (inode && S_ISBLK(inode->i_mode) && ++ grsec_enable_chroot_caps && proc_is_chrooted(current) && ++ !capable(CAP_SYS_RAWIO)) ++ return 1; ++#endif ++ return 0; ++} ++ ++static int ++gr_streq(const char *a, const char *b, const unsigned int lena, const unsigned int lenb) ++{ ++ if (likely(lena != lenb)) ++ return 0; ++ ++ return !memcmp(a, b, lena); ++} ++ ++static int prepend(char **buffer, int *buflen, const char *str, int namelen) ++{ ++ *buflen -= namelen; ++ if (*buflen < 0) ++ return -ENAMETOOLONG; ++ *buffer -= namelen; ++ memcpy(*buffer, str, namelen); ++ return 0; ++} ++ ++static int prepend_name(char **buffer, int *buflen, struct qstr *name) ++{ ++ return prepend(buffer, buflen, name->name, name->len); ++} ++ ++static int prepend_path(const struct path *path, struct path *root, ++ char **buffer, int *buflen) ++{ ++ struct dentry *dentry = path->dentry; ++ struct vfsmount *vfsmnt = path->mnt; ++ struct mount *mnt = real_mount(vfsmnt); ++ bool slash = false; ++ int error = 0; ++ ++ while (dentry != root->dentry || vfsmnt != root->mnt) { ++ struct dentry * parent; ++ ++ if (dentry == vfsmnt->mnt_root || IS_ROOT(dentry)) { ++ /* Global root? */ ++ if (!mnt_has_parent(mnt)) { ++ goto out; ++ } ++ dentry = mnt->mnt_mountpoint; ++ mnt = mnt->mnt_parent; ++ vfsmnt = &mnt->mnt; ++ continue; ++ } ++ parent = dentry->d_parent; ++ prefetch(parent); ++ spin_lock(&dentry->d_lock); ++ error = prepend_name(buffer, buflen, &dentry->d_name); ++ spin_unlock(&dentry->d_lock); ++ if (!error) ++ error = prepend(buffer, buflen, "/", 1); ++ if (error) ++ break; ++ ++ slash = true; ++ dentry = parent; ++ } ++ ++out: ++ if (!error && !slash) ++ error = prepend(buffer, buflen, "/", 1); ++ ++ return error; ++} ++ ++/* this must be called with vfsmount_lock and rename_lock held */ ++ ++static char *__our_d_path(const struct path *path, struct path *root, ++ char *buf, int buflen) ++{ ++ char *res = buf + buflen; ++ int error; ++ ++ prepend(&res, &buflen, "\0", 1); ++ error = prepend_path(path, root, &res, &buflen); ++ if (error) ++ return ERR_PTR(error); ++ ++ return res; ++} ++ ++static char * ++gen_full_path(struct path *path, struct path *root, char *buf, int buflen) ++{ ++ char *retval; ++ ++ retval = __our_d_path(path, root, buf, buflen); ++ if (unlikely(IS_ERR(retval))) ++ retval = strcpy(buf, "<path too long>"); ++ else if (unlikely(retval[1] == '/' && retval[2] == '\0')) ++ retval[1] = '\0'; ++ ++ return retval; ++} ++ ++static char * ++__d_real_path(const struct dentry *dentry, const struct vfsmount *vfsmnt, ++ char *buf, int buflen) ++{ ++ struct path path; ++ char *res; ++ ++ path.dentry = (struct dentry *)dentry; ++ path.mnt = (struct vfsmount *)vfsmnt; ++ ++ /* we can use real_root.dentry, real_root.mnt, because this is only called ++ by the RBAC system */ ++ res = gen_full_path(&path, &real_root, buf, buflen); ++ ++ return res; ++} ++ ++static char * ++d_real_path(const struct dentry *dentry, const struct vfsmount *vfsmnt, ++ char *buf, int buflen) ++{ ++ char *res; ++ struct path path; ++ struct path root; ++ struct task_struct *reaper = init_pid_ns.child_reaper; ++ ++ path.dentry = (struct dentry *)dentry; ++ path.mnt = (struct vfsmount *)vfsmnt; ++ ++ /* we can't use real_root.dentry, real_root.mnt, because they belong only to the RBAC system */ ++ get_fs_root(reaper->fs, &root); ++ ++ write_seqlock(&rename_lock); ++ br_read_lock(vfsmount_lock); ++ res = gen_full_path(&path, &root, buf, buflen); ++ br_read_unlock(vfsmount_lock); ++ write_sequnlock(&rename_lock); ++ ++ path_put(&root); ++ return res; ++} ++ ++static char * ++gr_to_filename_rbac(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++ char *ret; ++ write_seqlock(&rename_lock); ++ br_read_lock(vfsmount_lock); ++ ret = __d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[0],smp_processor_id()), ++ PAGE_SIZE); ++ br_read_unlock(vfsmount_lock); ++ write_sequnlock(&rename_lock); ++ return ret; ++} ++ ++static char * ++gr_to_proc_filename_rbac(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++ char *ret; ++ char *buf; ++ int buflen; ++ ++ write_seqlock(&rename_lock); ++ br_read_lock(vfsmount_lock); ++ buf = per_cpu_ptr(gr_shared_page[0], smp_processor_id()); ++ ret = __d_real_path(dentry, mnt, buf, PAGE_SIZE - 6); ++ buflen = (int)(ret - buf); ++ if (buflen >= 5) ++ prepend(&ret, &buflen, "/proc", 5); ++ else ++ ret = strcpy(buf, "<path too long>"); ++ br_read_unlock(vfsmount_lock); ++ write_sequnlock(&rename_lock); ++ return ret; ++} ++ ++char * ++gr_to_filename_nolock(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++ return __d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[0],smp_processor_id()), ++ PAGE_SIZE); ++} ++ ++char * ++gr_to_filename(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++ return d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[0], smp_processor_id()), ++ PAGE_SIZE); ++} ++ ++char * ++gr_to_filename1(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++ return d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[1], smp_processor_id()), ++ PAGE_SIZE); ++} ++ ++char * ++gr_to_filename2(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++ return d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[2], smp_processor_id()), ++ PAGE_SIZE); ++} ++ ++char * ++gr_to_filename3(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++ return d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[3], smp_processor_id()), ++ PAGE_SIZE); ++} ++ ++__inline__ __u32 ++to_gr_audit(const __u32 reqmode) ++{ ++ /* masks off auditable permission flags, then shifts them to create ++ auditing flags, and adds the special case of append auditing if ++ we're requesting write */ ++ return (((reqmode & ~GR_AUDITS) << 10) | ((reqmode & GR_WRITE) ? GR_AUDIT_APPEND : 0)); ++} ++ ++struct acl_subject_label * ++lookup_subject_map(const struct acl_subject_label *userp) ++{ ++ unsigned int index = shash(userp, subj_map_set.s_size); ++ struct subject_map *match; ++ ++ match = subj_map_set.s_hash[index]; ++ ++ while (match && match->user != userp) ++ match = match->next; ++ ++ if (match != NULL) ++ return match->kernel; ++ else ++ return NULL; ++} ++ ++static void ++insert_subj_map_entry(struct subject_map *subjmap) ++{ ++ unsigned int index = shash(subjmap->user, subj_map_set.s_size); ++ struct subject_map **curr; ++ ++ subjmap->prev = NULL; ++ ++ curr = &subj_map_set.s_hash[index]; ++ if (*curr != NULL) ++ (*curr)->prev = subjmap; ++ ++ subjmap->next = *curr; ++ *curr = subjmap; ++ ++ return; ++} ++ ++static struct acl_role_label * ++lookup_acl_role_label(const struct task_struct *task, const uid_t uid, ++ const gid_t gid) ++{ ++ unsigned int index = rhash(uid, GR_ROLE_USER, acl_role_set.r_size); ++ struct acl_role_label *match; ++ struct role_allowed_ip *ipp; ++ unsigned int x; ++ u32 curr_ip = task->signal->curr_ip; ++ ++ task->signal->saved_ip = curr_ip; ++ ++ match = acl_role_set.r_hash[index]; ++ ++ while (match) { ++ if ((match->roletype & (GR_ROLE_DOMAIN | GR_ROLE_USER)) == (GR_ROLE_DOMAIN | GR_ROLE_USER)) { ++ for (x = 0; x < match->domain_child_num; x++) { ++ if (match->domain_children[x] == uid) ++ goto found; ++ } ++ } else if (match->uidgid == uid && match->roletype & GR_ROLE_USER) ++ break; ++ match = match->next; ++ } ++found: ++ if (match == NULL) { ++ try_group: ++ index = rhash(gid, GR_ROLE_GROUP, acl_role_set.r_size); ++ match = acl_role_set.r_hash[index]; ++ ++ while (match) { ++ if ((match->roletype & (GR_ROLE_DOMAIN | GR_ROLE_GROUP)) == (GR_ROLE_DOMAIN | GR_ROLE_GROUP)) { ++ for (x = 0; x < match->domain_child_num; x++) { ++ if (match->domain_children[x] == gid) ++ goto found2; ++ } ++ } else if (match->uidgid == gid && match->roletype & GR_ROLE_GROUP) ++ break; ++ match = match->next; ++ } ++found2: ++ if (match == NULL) ++ match = default_role; ++ if (match->allowed_ips == NULL) ++ return match; ++ else { ++ for (ipp = match->allowed_ips; ipp; ipp = ipp->next) { ++ if (likely ++ ((ntohl(curr_ip) & ipp->netmask) == ++ (ntohl(ipp->addr) & ipp->netmask))) ++ return match; ++ } ++ match = default_role; ++ } ++ } else if (match->allowed_ips == NULL) { ++ return match; ++ } else { ++ for (ipp = match->allowed_ips; ipp; ipp = ipp->next) { ++ if (likely ++ ((ntohl(curr_ip) & ipp->netmask) == ++ (ntohl(ipp->addr) & ipp->netmask))) ++ return match; ++ } ++ goto try_group; ++ } ++ ++ return match; ++} ++ ++struct acl_subject_label * ++lookup_acl_subj_label(const ino_t ino, const dev_t dev, ++ const struct acl_role_label *role) ++{ ++ unsigned int index = fhash(ino, dev, role->subj_hash_size); ++ struct acl_subject_label *match; ++ ++ match = role->subj_hash[index]; ++ ++ while (match && (match->inode != ino || match->device != dev || ++ (match->mode & GR_DELETED))) { ++ match = match->next; ++ } ++ ++ if (match && !(match->mode & GR_DELETED)) ++ return match; ++ else ++ return NULL; ++} ++ ++struct acl_subject_label * ++lookup_acl_subj_label_deleted(const ino_t ino, const dev_t dev, ++ const struct acl_role_label *role) ++{ ++ unsigned int index = fhash(ino, dev, role->subj_hash_size); ++ struct acl_subject_label *match; ++ ++ match = role->subj_hash[index]; ++ ++ while (match && (match->inode != ino || match->device != dev || ++ !(match->mode & GR_DELETED))) { ++ match = match->next; ++ } ++ ++ if (match && (match->mode & GR_DELETED)) ++ return match; ++ else ++ return NULL; ++} ++ ++static struct acl_object_label * ++lookup_acl_obj_label(const ino_t ino, const dev_t dev, ++ const struct acl_subject_label *subj) ++{ ++ unsigned int index = fhash(ino, dev, subj->obj_hash_size); ++ struct acl_object_label *match; ++ ++ match = subj->obj_hash[index]; ++ ++ while (match && (match->inode != ino || match->device != dev || ++ (match->mode & GR_DELETED))) { ++ match = match->next; ++ } ++ ++ if (match && !(match->mode & GR_DELETED)) ++ return match; ++ else ++ return NULL; ++} ++ ++static struct acl_object_label * ++lookup_acl_obj_label_create(const ino_t ino, const dev_t dev, ++ const struct acl_subject_label *subj) ++{ ++ unsigned int index = fhash(ino, dev, subj->obj_hash_size); ++ struct acl_object_label *match; ++ ++ match = subj->obj_hash[index]; ++ ++ while (match && (match->inode != ino || match->device != dev || ++ !(match->mode & GR_DELETED))) { ++ match = match->next; ++ } ++ ++ if (match && (match->mode & GR_DELETED)) ++ return match; ++ ++ match = subj->obj_hash[index]; ++ ++ while (match && (match->inode != ino || match->device != dev || ++ (match->mode & GR_DELETED))) { ++ match = match->next; ++ } ++ ++ if (match && !(match->mode & GR_DELETED)) ++ return match; ++ else ++ return NULL; ++} ++ ++static struct name_entry * ++lookup_name_entry(const char *name) ++{ ++ unsigned int len = strlen(name); ++ unsigned int key = full_name_hash(name, len); ++ unsigned int index = key % name_set.n_size; ++ struct name_entry *match; ++ ++ match = name_set.n_hash[index]; ++ ++ while (match && (match->key != key || !gr_streq(match->name, name, match->len, len))) ++ match = match->next; ++ ++ return match; ++} ++ ++static struct name_entry * ++lookup_name_entry_create(const char *name) ++{ ++ unsigned int len = strlen(name); ++ unsigned int key = full_name_hash(name, len); ++ unsigned int index = key % name_set.n_size; ++ struct name_entry *match; ++ ++ match = name_set.n_hash[index]; ++ ++ while (match && (match->key != key || !gr_streq(match->name, name, match->len, len) || ++ !match->deleted)) ++ match = match->next; ++ ++ if (match && match->deleted) ++ return match; ++ ++ match = name_set.n_hash[index]; ++ ++ while (match && (match->key != key || !gr_streq(match->name, name, match->len, len) || ++ match->deleted)) ++ match = match->next; ++ ++ if (match && !match->deleted) ++ return match; ++ else ++ return NULL; ++} ++ ++static struct inodev_entry * ++lookup_inodev_entry(const ino_t ino, const dev_t dev) ++{ ++ unsigned int index = fhash(ino, dev, inodev_set.i_size); ++ struct inodev_entry *match; ++ ++ match = inodev_set.i_hash[index]; ++ ++ while (match && (match->nentry->inode != ino || match->nentry->device != dev)) ++ match = match->next; ++ ++ return match; ++} ++ ++static void ++insert_inodev_entry(struct inodev_entry *entry) ++{ ++ unsigned int index = fhash(entry->nentry->inode, entry->nentry->device, ++ inodev_set.i_size); ++ struct inodev_entry **curr; ++ ++ entry->prev = NULL; ++ ++ curr = &inodev_set.i_hash[index]; ++ if (*curr != NULL) ++ (*curr)->prev = entry; ++ ++ entry->next = *curr; ++ *curr = entry; ++ ++ return; ++} ++ ++static void ++__insert_acl_role_label(struct acl_role_label *role, uid_t uidgid) ++{ ++ unsigned int index = ++ rhash(uidgid, role->roletype & (GR_ROLE_USER | GR_ROLE_GROUP), acl_role_set.r_size); ++ struct acl_role_label **curr; ++ struct acl_role_label *tmp, *tmp2; ++ ++ curr = &acl_role_set.r_hash[index]; ++ ++ /* simple case, slot is empty, just set it to our role */ ++ if (*curr == NULL) { ++ *curr = role; ++ } else { ++ /* example: ++ 1 -> 2 -> 3 (adding 2 -> 3 to here) ++ 2 -> 3 ++ */ ++ /* first check to see if we can already be reached via this slot */ ++ tmp = *curr; ++ while (tmp && tmp != role) ++ tmp = tmp->next; ++ if (tmp == role) { ++ /* we don't need to add ourselves to this slot's chain */ ++ return; ++ } ++ /* we need to add ourselves to this chain, two cases */ ++ if (role->next == NULL) { ++ /* simple case, append the current chain to our role */ ++ role->next = *curr; ++ *curr = role; ++ } else { ++ /* 1 -> 2 -> 3 -> 4 ++ 2 -> 3 -> 4 ++ 3 -> 4 (adding 1 -> 2 -> 3 -> 4 to here) ++ */ ++ /* trickier case: walk our role's chain until we find ++ the role for the start of the current slot's chain */ ++ tmp = role; ++ tmp2 = *curr; ++ while (tmp->next && tmp->next != tmp2) ++ tmp = tmp->next; ++ if (tmp->next == tmp2) { ++ /* from example above, we found 3, so just ++ replace this slot's chain with ours */ ++ *curr = role; ++ } else { ++ /* we didn't find a subset of our role's chain ++ in the current slot's chain, so append their ++ chain to ours, and set us as the first role in ++ the slot's chain ++ ++ we could fold this case with the case above, ++ but making it explicit for clarity ++ */ ++ tmp->next = tmp2; ++ *curr = role; ++ } ++ } ++ } ++ ++ return; ++} ++ ++static void ++insert_acl_role_label(struct acl_role_label *role) ++{ ++ int i; ++ ++ if (role_list == NULL) { ++ role_list = role; ++ role->prev = NULL; ++ } else { ++ role->prev = role_list; ++ role_list = role; ++ } ++ ++ /* used for hash chains */ ++ role->next = NULL; ++ ++ if (role->roletype & GR_ROLE_DOMAIN) { ++ for (i = 0; i < role->domain_child_num; i++) ++ __insert_acl_role_label(role, role->domain_children[i]); ++ } else ++ __insert_acl_role_label(role, role->uidgid); ++} ++ ++static int ++insert_name_entry(char *name, const ino_t inode, const dev_t device, __u8 deleted) ++{ ++ struct name_entry **curr, *nentry; ++ struct inodev_entry *ientry; ++ unsigned int len = strlen(name); ++ unsigned int key = full_name_hash(name, len); ++ unsigned int index = key % name_set.n_size; ++ ++ curr = &name_set.n_hash[index]; ++ ++ while (*curr && ((*curr)->key != key || !gr_streq((*curr)->name, name, (*curr)->len, len))) ++ curr = &((*curr)->next); ++ ++ if (*curr != NULL) ++ return 1; ++ ++ nentry = acl_alloc(sizeof (struct name_entry)); ++ if (nentry == NULL) ++ return 0; ++ ientry = acl_alloc(sizeof (struct inodev_entry)); ++ if (ientry == NULL) ++ return 0; ++ ientry->nentry = nentry; ++ ++ nentry->key = key; ++ nentry->name = name; ++ nentry->inode = inode; ++ nentry->device = device; ++ nentry->len = len; ++ nentry->deleted = deleted; ++ ++ nentry->prev = NULL; ++ curr = &name_set.n_hash[index]; ++ if (*curr != NULL) ++ (*curr)->prev = nentry; ++ nentry->next = *curr; ++ *curr = nentry; ++ ++ /* insert us into the table searchable by inode/dev */ ++ insert_inodev_entry(ientry); ++ ++ return 1; ++} ++ ++static void ++insert_acl_obj_label(struct acl_object_label *obj, ++ struct acl_subject_label *subj) ++{ ++ unsigned int index = ++ fhash(obj->inode, obj->device, subj->obj_hash_size); ++ struct acl_object_label **curr; ++ ++ ++ obj->prev = NULL; ++ ++ curr = &subj->obj_hash[index]; ++ if (*curr != NULL) ++ (*curr)->prev = obj; ++ ++ obj->next = *curr; ++ *curr = obj; ++ ++ return; ++} ++ ++static void ++insert_acl_subj_label(struct acl_subject_label *obj, ++ struct acl_role_label *role) ++{ ++ unsigned int index = fhash(obj->inode, obj->device, role->subj_hash_size); ++ struct acl_subject_label **curr; ++ ++ obj->prev = NULL; ++ ++ curr = &role->subj_hash[index]; ++ if (*curr != NULL) ++ (*curr)->prev = obj; ++ ++ obj->next = *curr; ++ *curr = obj; ++ ++ return; ++} ++ ++/* allocating chained hash tables, so optimal size is where lambda ~ 1 */ ++ ++static void * ++create_table(__u32 * len, int elementsize) ++{ ++ unsigned int table_sizes[] = { ++ 7, 13, 31, 61, 127, 251, 509, 1021, 2039, 4093, 8191, 16381, ++ 32749, 65521, 131071, 262139, 524287, 1048573, 2097143, ++ 4194301, 8388593, 16777213, 33554393, 67108859 ++ }; ++ void *newtable = NULL; ++ unsigned int pwr = 0; ++ ++ while ((pwr < ((sizeof (table_sizes) / sizeof (table_sizes[0])) - 1)) && ++ table_sizes[pwr] <= *len) ++ pwr++; ++ ++ if (table_sizes[pwr] <= *len || (table_sizes[pwr] > ULONG_MAX / elementsize)) ++ return newtable; ++ ++ if ((table_sizes[pwr] * elementsize) <= PAGE_SIZE) ++ newtable = ++ kmalloc(table_sizes[pwr] * elementsize, GFP_KERNEL); ++ else ++ newtable = vmalloc(table_sizes[pwr] * elementsize); ++ ++ *len = table_sizes[pwr]; ++ ++ return newtable; ++} ++ ++static int ++init_variables(const struct gr_arg *arg) ++{ ++ struct task_struct *reaper = init_pid_ns.child_reaper; ++ unsigned int stacksize; ++ ++ subj_map_set.s_size = arg->role_db.num_subjects; ++ acl_role_set.r_size = arg->role_db.num_roles + arg->role_db.num_domain_children; ++ name_set.n_size = arg->role_db.num_objects; ++ inodev_set.i_size = arg->role_db.num_objects; ++ ++ if (!subj_map_set.s_size || !acl_role_set.r_size || ++ !name_set.n_size || !inodev_set.i_size) ++ return 1; ++ ++ if (!gr_init_uidset()) ++ return 1; ++ ++ /* set up the stack that holds allocation info */ ++ ++ stacksize = arg->role_db.num_pointers + 5; ++ ++ if (!acl_alloc_stack_init(stacksize)) ++ return 1; ++ ++ /* grab reference for the real root dentry and vfsmount */ ++ get_fs_root(reaper->fs, &real_root); ++ ++#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG ++ printk(KERN_ALERT "Obtained real root device=%d, inode=%lu\n", __get_dev(real_root.dentry), real_root.dentry->d_inode->i_ino); ++#endif ++ ++ fakefs_obj_rw = acl_alloc(sizeof(struct acl_object_label)); ++ if (fakefs_obj_rw == NULL) ++ return 1; ++ fakefs_obj_rw->mode = GR_FIND | GR_READ | GR_WRITE; ++ ++ fakefs_obj_rwx = acl_alloc(sizeof(struct acl_object_label)); ++ if (fakefs_obj_rwx == NULL) ++ return 1; ++ fakefs_obj_rwx->mode = GR_FIND | GR_READ | GR_WRITE | GR_EXEC; ++ ++ subj_map_set.s_hash = ++ (struct subject_map **) create_table(&subj_map_set.s_size, sizeof(void *)); ++ acl_role_set.r_hash = ++ (struct acl_role_label **) create_table(&acl_role_set.r_size, sizeof(void *)); ++ name_set.n_hash = (struct name_entry **) create_table(&name_set.n_size, sizeof(void *)); ++ inodev_set.i_hash = ++ (struct inodev_entry **) create_table(&inodev_set.i_size, sizeof(void *)); ++ ++ if (!subj_map_set.s_hash || !acl_role_set.r_hash || ++ !name_set.n_hash || !inodev_set.i_hash) ++ return 1; ++ ++ memset(subj_map_set.s_hash, 0, ++ sizeof(struct subject_map *) * subj_map_set.s_size); ++ memset(acl_role_set.r_hash, 0, ++ sizeof (struct acl_role_label *) * acl_role_set.r_size); ++ memset(name_set.n_hash, 0, ++ sizeof (struct name_entry *) * name_set.n_size); ++ memset(inodev_set.i_hash, 0, ++ sizeof (struct inodev_entry *) * inodev_set.i_size); ++ ++ return 0; ++} ++ ++/* free information not needed after startup ++ currently contains user->kernel pointer mappings for subjects ++*/ ++ ++static void ++free_init_variables(void) ++{ ++ __u32 i; ++ ++ if (subj_map_set.s_hash) { ++ for (i = 0; i < subj_map_set.s_size; i++) { ++ if (subj_map_set.s_hash[i]) { ++ kfree(subj_map_set.s_hash[i]); ++ subj_map_set.s_hash[i] = NULL; ++ } ++ } ++ ++ if ((subj_map_set.s_size * sizeof (struct subject_map *)) <= ++ PAGE_SIZE) ++ kfree(subj_map_set.s_hash); ++ else ++ vfree(subj_map_set.s_hash); ++ } ++ ++ return; ++} ++ ++static void ++free_variables(void) ++{ ++ struct acl_subject_label *s; ++ struct acl_role_label *r; ++ struct task_struct *task, *task2; ++ unsigned int x; ++ ++ gr_clear_learn_entries(); ++ ++ read_lock(&tasklist_lock); ++ do_each_thread(task2, task) { ++ task->acl_sp_role = 0; ++ task->acl_role_id = 0; ++ task->acl = NULL; ++ task->role = NULL; ++ } while_each_thread(task2, task); ++ read_unlock(&tasklist_lock); ++ ++ /* release the reference to the real root dentry and vfsmount */ ++ path_put(&real_root); ++ memset(&real_root, 0, sizeof(real_root)); ++ ++ /* free all object hash tables */ ++ ++ FOR_EACH_ROLE_START(r) ++ if (r->subj_hash == NULL) ++ goto next_role; ++ FOR_EACH_SUBJECT_START(r, s, x) ++ if (s->obj_hash == NULL) ++ break; ++ if ((s->obj_hash_size * sizeof (struct acl_object_label *)) <= PAGE_SIZE) ++ kfree(s->obj_hash); ++ else ++ vfree(s->obj_hash); ++ FOR_EACH_SUBJECT_END(s, x) ++ FOR_EACH_NESTED_SUBJECT_START(r, s) ++ if (s->obj_hash == NULL) ++ break; ++ if ((s->obj_hash_size * sizeof (struct acl_object_label *)) <= PAGE_SIZE) ++ kfree(s->obj_hash); ++ else ++ vfree(s->obj_hash); ++ FOR_EACH_NESTED_SUBJECT_END(s) ++ if ((r->subj_hash_size * sizeof (struct acl_subject_label *)) <= PAGE_SIZE) ++ kfree(r->subj_hash); ++ else ++ vfree(r->subj_hash); ++ r->subj_hash = NULL; ++next_role: ++ FOR_EACH_ROLE_END(r) ++ ++ acl_free_all(); ++ ++ if (acl_role_set.r_hash) { ++ if ((acl_role_set.r_size * sizeof (struct acl_role_label *)) <= ++ PAGE_SIZE) ++ kfree(acl_role_set.r_hash); ++ else ++ vfree(acl_role_set.r_hash); ++ } ++ if (name_set.n_hash) { ++ if ((name_set.n_size * sizeof (struct name_entry *)) <= ++ PAGE_SIZE) ++ kfree(name_set.n_hash); ++ else ++ vfree(name_set.n_hash); ++ } ++ ++ if (inodev_set.i_hash) { ++ if ((inodev_set.i_size * sizeof (struct inodev_entry *)) <= ++ PAGE_SIZE) ++ kfree(inodev_set.i_hash); ++ else ++ vfree(inodev_set.i_hash); ++ } ++ ++ gr_free_uidset(); ++ ++ memset(&name_set, 0, sizeof (struct name_db)); ++ memset(&inodev_set, 0, sizeof (struct inodev_db)); ++ memset(&acl_role_set, 0, sizeof (struct acl_role_db)); ++ memset(&subj_map_set, 0, sizeof (struct acl_subj_map_db)); ++ ++ default_role = NULL; ++ kernel_role = NULL; ++ role_list = NULL; ++ ++ return; ++} ++ ++static __u32 ++count_user_objs(struct acl_object_label *userp) ++{ ++ struct acl_object_label o_tmp; ++ __u32 num = 0; ++ ++ while (userp) { ++ if (copy_from_user(&o_tmp, userp, ++ sizeof (struct acl_object_label))) ++ break; ++ ++ userp = o_tmp.prev; ++ num++; ++ } ++ ++ return num; ++} ++ ++static struct acl_subject_label * ++do_copy_user_subj(struct acl_subject_label *userp, struct acl_role_label *role); ++ ++static int ++copy_user_glob(struct acl_object_label *obj) ++{ ++ struct acl_object_label *g_tmp, **guser; ++ unsigned int len; ++ char *tmp; ++ ++ if (obj->globbed == NULL) ++ return 0; ++ ++ guser = &obj->globbed; ++ while (*guser) { ++ g_tmp = (struct acl_object_label *) ++ acl_alloc(sizeof (struct acl_object_label)); ++ if (g_tmp == NULL) ++ return -ENOMEM; ++ ++ if (copy_from_user(g_tmp, *guser, ++ sizeof (struct acl_object_label))) ++ return -EFAULT; ++ ++ len = strnlen_user(g_tmp->filename, PATH_MAX); ++ ++ if (!len || len >= PATH_MAX) ++ return -EINVAL; ++ ++ if ((tmp = (char *) acl_alloc(len)) == NULL) ++ return -ENOMEM; ++ ++ if (copy_from_user(tmp, g_tmp->filename, len)) ++ return -EFAULT; ++ tmp[len-1] = '\0'; ++ g_tmp->filename = tmp; ++ ++ *guser = g_tmp; ++ guser = &(g_tmp->next); ++ } ++ ++ return 0; ++} ++ ++static int ++copy_user_objs(struct acl_object_label *userp, struct acl_subject_label *subj, ++ struct acl_role_label *role) ++{ ++ struct acl_object_label *o_tmp; ++ unsigned int len; ++ int ret; ++ char *tmp; ++ ++ while (userp) { ++ if ((o_tmp = (struct acl_object_label *) ++ acl_alloc(sizeof (struct acl_object_label))) == NULL) ++ return -ENOMEM; ++ ++ if (copy_from_user(o_tmp, userp, ++ sizeof (struct acl_object_label))) ++ return -EFAULT; ++ ++ userp = o_tmp->prev; ++ ++ len = strnlen_user(o_tmp->filename, PATH_MAX); ++ ++ if (!len || len >= PATH_MAX) ++ return -EINVAL; ++ ++ if ((tmp = (char *) acl_alloc(len)) == NULL) ++ return -ENOMEM; ++ ++ if (copy_from_user(tmp, o_tmp->filename, len)) ++ return -EFAULT; ++ tmp[len-1] = '\0'; ++ o_tmp->filename = tmp; ++ ++ insert_acl_obj_label(o_tmp, subj); ++ if (!insert_name_entry(o_tmp->filename, o_tmp->inode, ++ o_tmp->device, (o_tmp->mode & GR_DELETED) ? 1 : 0)) ++ return -ENOMEM; ++ ++ ret = copy_user_glob(o_tmp); ++ if (ret) ++ return ret; ++ ++ if (o_tmp->nested) { ++ o_tmp->nested = do_copy_user_subj(o_tmp->nested, role); ++ if (IS_ERR(o_tmp->nested)) ++ return PTR_ERR(o_tmp->nested); ++ ++ /* insert into nested subject list */ ++ o_tmp->nested->next = role->hash->first; ++ role->hash->first = o_tmp->nested; ++ } ++ } ++ ++ return 0; ++} ++ ++static __u32 ++count_user_subjs(struct acl_subject_label *userp) ++{ ++ struct acl_subject_label s_tmp; ++ __u32 num = 0; ++ ++ while (userp) { ++ if (copy_from_user(&s_tmp, userp, ++ sizeof (struct acl_subject_label))) ++ break; ++ ++ userp = s_tmp.prev; ++ /* do not count nested subjects against this count, since ++ they are not included in the hash table, but are ++ attached to objects. We have already counted ++ the subjects in userspace for the allocation ++ stack ++ */ ++ if (!(s_tmp.mode & GR_NESTED)) ++ num++; ++ } ++ ++ return num; ++} ++ ++static int ++copy_user_allowedips(struct acl_role_label *rolep) ++{ ++ struct role_allowed_ip *ruserip, *rtmp = NULL, *rlast; ++ ++ ruserip = rolep->allowed_ips; ++ ++ while (ruserip) { ++ rlast = rtmp; ++ ++ if ((rtmp = (struct role_allowed_ip *) ++ acl_alloc(sizeof (struct role_allowed_ip))) == NULL) ++ return -ENOMEM; ++ ++ if (copy_from_user(rtmp, ruserip, ++ sizeof (struct role_allowed_ip))) ++ return -EFAULT; ++ ++ ruserip = rtmp->prev; ++ ++ if (!rlast) { ++ rtmp->prev = NULL; ++ rolep->allowed_ips = rtmp; ++ } else { ++ rlast->next = rtmp; ++ rtmp->prev = rlast; ++ } ++ ++ if (!ruserip) ++ rtmp->next = NULL; ++ } ++ ++ return 0; ++} ++ ++static int ++copy_user_transitions(struct acl_role_label *rolep) ++{ ++ struct role_transition *rusertp, *rtmp = NULL, *rlast; ++ ++ unsigned int len; ++ char *tmp; ++ ++ rusertp = rolep->transitions; ++ ++ while (rusertp) { ++ rlast = rtmp; ++ ++ if ((rtmp = (struct role_transition *) ++ acl_alloc(sizeof (struct role_transition))) == NULL) ++ return -ENOMEM; ++ ++ if (copy_from_user(rtmp, rusertp, ++ sizeof (struct role_transition))) ++ return -EFAULT; ++ ++ rusertp = rtmp->prev; ++ ++ len = strnlen_user(rtmp->rolename, GR_SPROLE_LEN); ++ ++ if (!len || len >= GR_SPROLE_LEN) ++ return -EINVAL; ++ ++ if ((tmp = (char *) acl_alloc(len)) == NULL) ++ return -ENOMEM; ++ ++ if (copy_from_user(tmp, rtmp->rolename, len)) ++ return -EFAULT; ++ tmp[len-1] = '\0'; ++ rtmp->rolename = tmp; ++ ++ if (!rlast) { ++ rtmp->prev = NULL; ++ rolep->transitions = rtmp; ++ } else { ++ rlast->next = rtmp; ++ rtmp->prev = rlast; ++ } ++ ++ if (!rusertp) ++ rtmp->next = NULL; ++ } ++ ++ return 0; ++} ++ ++static struct acl_subject_label * ++do_copy_user_subj(struct acl_subject_label *userp, struct acl_role_label *role) ++{ ++ struct acl_subject_label *s_tmp = NULL, *s_tmp2; ++ unsigned int len; ++ char *tmp; ++ __u32 num_objs; ++ struct acl_ip_label **i_tmp, *i_utmp2; ++ struct gr_hash_struct ghash; ++ struct subject_map *subjmap; ++ unsigned int i_num; ++ int err; ++ ++ s_tmp = lookup_subject_map(userp); ++ ++ /* we've already copied this subject into the kernel, just return ++ the reference to it, and don't copy it over again ++ */ ++ if (s_tmp) ++ return(s_tmp); ++ ++ if ((s_tmp = (struct acl_subject_label *) ++ acl_alloc(sizeof (struct acl_subject_label))) == NULL) ++ return ERR_PTR(-ENOMEM); ++ ++ subjmap = (struct subject_map *)kmalloc(sizeof (struct subject_map), GFP_KERNEL); ++ if (subjmap == NULL) ++ return ERR_PTR(-ENOMEM); ++ ++ subjmap->user = userp; ++ subjmap->kernel = s_tmp; ++ insert_subj_map_entry(subjmap); ++ ++ if (copy_from_user(s_tmp, userp, ++ sizeof (struct acl_subject_label))) ++ return ERR_PTR(-EFAULT); ++ ++ len = strnlen_user(s_tmp->filename, PATH_MAX); ++ ++ if (!len || len >= PATH_MAX) ++ return ERR_PTR(-EINVAL); ++ ++ if ((tmp = (char *) acl_alloc(len)) == NULL) ++ return ERR_PTR(-ENOMEM); ++ ++ if (copy_from_user(tmp, s_tmp->filename, len)) ++ return ERR_PTR(-EFAULT); ++ tmp[len-1] = '\0'; ++ s_tmp->filename = tmp; ++ ++ if (!strcmp(s_tmp->filename, "/")) ++ role->root_label = s_tmp; ++ ++ if (copy_from_user(&ghash, s_tmp->hash, sizeof(struct gr_hash_struct))) ++ return ERR_PTR(-EFAULT); ++ ++ /* copy user and group transition tables */ ++ ++ if (s_tmp->user_trans_num) { ++ uid_t *uidlist; ++ ++ uidlist = (uid_t *)acl_alloc_num(s_tmp->user_trans_num, sizeof(uid_t)); ++ if (uidlist == NULL) ++ return ERR_PTR(-ENOMEM); ++ if (copy_from_user(uidlist, s_tmp->user_transitions, s_tmp->user_trans_num * sizeof(uid_t))) ++ return ERR_PTR(-EFAULT); ++ ++ s_tmp->user_transitions = uidlist; ++ } ++ ++ if (s_tmp->group_trans_num) { ++ gid_t *gidlist; ++ ++ gidlist = (gid_t *)acl_alloc_num(s_tmp->group_trans_num, sizeof(gid_t)); ++ if (gidlist == NULL) ++ return ERR_PTR(-ENOMEM); ++ if (copy_from_user(gidlist, s_tmp->group_transitions, s_tmp->group_trans_num * sizeof(gid_t))) ++ return ERR_PTR(-EFAULT); ++ ++ s_tmp->group_transitions = gidlist; ++ } ++ ++ /* set up object hash table */ ++ num_objs = count_user_objs(ghash.first); ++ ++ s_tmp->obj_hash_size = num_objs; ++ s_tmp->obj_hash = ++ (struct acl_object_label **) ++ create_table(&(s_tmp->obj_hash_size), sizeof(void *)); ++ ++ if (!s_tmp->obj_hash) ++ return ERR_PTR(-ENOMEM); ++ ++ memset(s_tmp->obj_hash, 0, ++ s_tmp->obj_hash_size * ++ sizeof (struct acl_object_label *)); ++ ++ /* add in objects */ ++ err = copy_user_objs(ghash.first, s_tmp, role); ++ ++ if (err) ++ return ERR_PTR(err); ++ ++ /* set pointer for parent subject */ ++ if (s_tmp->parent_subject) { ++ s_tmp2 = do_copy_user_subj(s_tmp->parent_subject, role); ++ ++ if (IS_ERR(s_tmp2)) ++ return s_tmp2; ++ ++ s_tmp->parent_subject = s_tmp2; ++ } ++ ++ /* add in ip acls */ ++ ++ if (!s_tmp->ip_num) { ++ s_tmp->ips = NULL; ++ goto insert; ++ } ++ ++ i_tmp = ++ (struct acl_ip_label **) acl_alloc_num(s_tmp->ip_num, ++ sizeof (struct acl_ip_label *)); ++ ++ if (!i_tmp) ++ return ERR_PTR(-ENOMEM); ++ ++ for (i_num = 0; i_num < s_tmp->ip_num; i_num++) { ++ *(i_tmp + i_num) = ++ (struct acl_ip_label *) ++ acl_alloc(sizeof (struct acl_ip_label)); ++ if (!*(i_tmp + i_num)) ++ return ERR_PTR(-ENOMEM); ++ ++ if (copy_from_user ++ (&i_utmp2, s_tmp->ips + i_num, ++ sizeof (struct acl_ip_label *))) ++ return ERR_PTR(-EFAULT); ++ ++ if (copy_from_user ++ (*(i_tmp + i_num), i_utmp2, ++ sizeof (struct acl_ip_label))) ++ return ERR_PTR(-EFAULT); ++ ++ if ((*(i_tmp + i_num))->iface == NULL) ++ continue; ++ ++ len = strnlen_user((*(i_tmp + i_num))->iface, IFNAMSIZ); ++ if (!len || len >= IFNAMSIZ) ++ return ERR_PTR(-EINVAL); ++ tmp = acl_alloc(len); ++ if (tmp == NULL) ++ return ERR_PTR(-ENOMEM); ++ if (copy_from_user(tmp, (*(i_tmp + i_num))->iface, len)) ++ return ERR_PTR(-EFAULT); ++ (*(i_tmp + i_num))->iface = tmp; ++ } ++ ++ s_tmp->ips = i_tmp; ++ ++insert: ++ if (!insert_name_entry(s_tmp->filename, s_tmp->inode, ++ s_tmp->device, (s_tmp->mode & GR_DELETED) ? 1 : 0)) ++ return ERR_PTR(-ENOMEM); ++ ++ return s_tmp; ++} ++ ++static int ++copy_user_subjs(struct acl_subject_label *userp, struct acl_role_label *role) ++{ ++ struct acl_subject_label s_pre; ++ struct acl_subject_label * ret; ++ int err; ++ ++ while (userp) { ++ if (copy_from_user(&s_pre, userp, ++ sizeof (struct acl_subject_label))) ++ return -EFAULT; ++ ++ /* do not add nested subjects here, add ++ while parsing objects ++ */ ++ ++ if (s_pre.mode & GR_NESTED) { ++ userp = s_pre.prev; ++ continue; ++ } ++ ++ ret = do_copy_user_subj(userp, role); ++ ++ err = PTR_ERR(ret); ++ if (IS_ERR(ret)) ++ return err; ++ ++ insert_acl_subj_label(ret, role); ++ ++ userp = s_pre.prev; ++ } ++ ++ return 0; ++} ++ ++static int ++copy_user_acl(struct gr_arg *arg) ++{ ++ struct acl_role_label *r_tmp = NULL, **r_utmp, *r_utmp2; ++ struct sprole_pw *sptmp; ++ struct gr_hash_struct *ghash; ++ uid_t *domainlist; ++ unsigned int r_num; ++ unsigned int len; ++ char *tmp; ++ int err = 0; ++ __u16 i; ++ __u32 num_subjs; ++ ++ /* we need a default and kernel role */ ++ if (arg->role_db.num_roles < 2) ++ return -EINVAL; ++ ++ /* copy special role authentication info from userspace */ ++ ++ num_sprole_pws = arg->num_sprole_pws; ++ acl_special_roles = (struct sprole_pw **) acl_alloc_num(num_sprole_pws, sizeof(struct sprole_pw *)); ++ ++ if (!acl_special_roles && num_sprole_pws) ++ return -ENOMEM; ++ ++ for (i = 0; i < num_sprole_pws; i++) { ++ sptmp = (struct sprole_pw *) acl_alloc(sizeof(struct sprole_pw)); ++ if (!sptmp) ++ return -ENOMEM; ++ if (copy_from_user(sptmp, arg->sprole_pws + i, ++ sizeof (struct sprole_pw))) ++ return -EFAULT; ++ ++ len = strnlen_user(sptmp->rolename, GR_SPROLE_LEN); ++ ++ if (!len || len >= GR_SPROLE_LEN) ++ return -EINVAL; ++ ++ if ((tmp = (char *) acl_alloc(len)) == NULL) ++ return -ENOMEM; ++ ++ if (copy_from_user(tmp, sptmp->rolename, len)) ++ return -EFAULT; ++ ++ tmp[len-1] = '\0'; ++#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG ++ printk(KERN_ALERT "Copying special role %s\n", tmp); ++#endif ++ sptmp->rolename = tmp; ++ acl_special_roles[i] = sptmp; ++ } ++ ++ r_utmp = (struct acl_role_label **) arg->role_db.r_table; ++ ++ for (r_num = 0; r_num < arg->role_db.num_roles; r_num++) { ++ r_tmp = acl_alloc(sizeof (struct acl_role_label)); ++ ++ if (!r_tmp) ++ return -ENOMEM; ++ ++ if (copy_from_user(&r_utmp2, r_utmp + r_num, ++ sizeof (struct acl_role_label *))) ++ return -EFAULT; ++ ++ if (copy_from_user(r_tmp, r_utmp2, ++ sizeof (struct acl_role_label))) ++ return -EFAULT; ++ ++ len = strnlen_user(r_tmp->rolename, GR_SPROLE_LEN); ++ ++ if (!len || len >= PATH_MAX) ++ return -EINVAL; ++ ++ if ((tmp = (char *) acl_alloc(len)) == NULL) ++ return -ENOMEM; ++ ++ if (copy_from_user(tmp, r_tmp->rolename, len)) ++ return -EFAULT; ++ ++ tmp[len-1] = '\0'; ++ r_tmp->rolename = tmp; ++ ++ if (!strcmp(r_tmp->rolename, "default") ++ && (r_tmp->roletype & GR_ROLE_DEFAULT)) { ++ default_role = r_tmp; ++ } else if (!strcmp(r_tmp->rolename, ":::kernel:::")) { ++ kernel_role = r_tmp; ++ } ++ ++ if ((ghash = (struct gr_hash_struct *) acl_alloc(sizeof(struct gr_hash_struct))) == NULL) ++ return -ENOMEM; ++ ++ if (copy_from_user(ghash, r_tmp->hash, sizeof(struct gr_hash_struct))) ++ return -EFAULT; ++ ++ r_tmp->hash = ghash; ++ ++ num_subjs = count_user_subjs(r_tmp->hash->first); ++ ++ r_tmp->subj_hash_size = num_subjs; ++ r_tmp->subj_hash = ++ (struct acl_subject_label **) ++ create_table(&(r_tmp->subj_hash_size), sizeof(void *)); ++ ++ if (!r_tmp->subj_hash) ++ return -ENOMEM; ++ ++ err = copy_user_allowedips(r_tmp); ++ if (err) ++ return err; ++ ++ /* copy domain info */ ++ if (r_tmp->domain_children != NULL) { ++ domainlist = acl_alloc_num(r_tmp->domain_child_num, sizeof(uid_t)); ++ if (domainlist == NULL) ++ return -ENOMEM; ++ ++ if (copy_from_user(domainlist, r_tmp->domain_children, r_tmp->domain_child_num * sizeof(uid_t))) ++ return -EFAULT; ++ ++ r_tmp->domain_children = domainlist; ++ } ++ ++ err = copy_user_transitions(r_tmp); ++ if (err) ++ return err; ++ ++ memset(r_tmp->subj_hash, 0, ++ r_tmp->subj_hash_size * ++ sizeof (struct acl_subject_label *)); ++ ++ err = copy_user_subjs(r_tmp->hash->first, r_tmp); ++ ++ if (err) ++ return err; ++ ++ /* set nested subject list to null */ ++ r_tmp->hash->first = NULL; ++ ++ insert_acl_role_label(r_tmp); ++ } ++ ++ if (default_role == NULL || kernel_role == NULL) ++ return -EINVAL; ++ ++ return err; ++} ++ ++static int ++gracl_init(struct gr_arg *args) ++{ ++ int error = 0; ++ ++ memcpy(gr_system_salt, args->salt, GR_SALT_LEN); ++ memcpy(gr_system_sum, args->sum, GR_SHA_LEN); ++ ++ if (init_variables(args)) { ++ gr_log_str(GR_DONT_AUDIT_GOOD, GR_INITF_ACL_MSG, GR_VERSION); ++ error = -ENOMEM; ++ free_variables(); ++ goto out; ++ } ++ ++ error = copy_user_acl(args); ++ free_init_variables(); ++ if (error) { ++ free_variables(); ++ goto out; ++ } ++ ++ if ((error = gr_set_acls(0))) { ++ free_variables(); ++ goto out; ++ } ++ ++ pax_open_kernel(); ++ gr_status |= GR_READY; ++ pax_close_kernel(); ++ ++ out: ++ return error; ++} ++ ++/* derived from glibc fnmatch() 0: match, 1: no match*/ ++ ++static int ++glob_match(const char *p, const char *n) ++{ ++ char c; ++ ++ while ((c = *p++) != '\0') { ++ switch (c) { ++ case '?': ++ if (*n == '\0') ++ return 1; ++ else if (*n == '/') ++ return 1; ++ break; ++ case '\\': ++ if (*n != c) ++ return 1; ++ break; ++ case '*': ++ for (c = *p++; c == '?' || c == '*'; c = *p++) { ++ if (*n == '/') ++ return 1; ++ else if (c == '?') { ++ if (*n == '\0') ++ return 1; ++ else ++ ++n; ++ } ++ } ++ if (c == '\0') { ++ return 0; ++ } else { ++ const char *endp; ++ ++ if ((endp = strchr(n, '/')) == NULL) ++ endp = n + strlen(n); ++ ++ if (c == '[') { ++ for (--p; n < endp; ++n) ++ if (!glob_match(p, n)) ++ return 0; ++ } else if (c == '/') { ++ while (*n != '\0' && *n != '/') ++ ++n; ++ if (*n == '/' && !glob_match(p, n + 1)) ++ return 0; ++ } else { ++ for (--p; n < endp; ++n) ++ if (*n == c && !glob_match(p, n)) ++ return 0; ++ } ++ ++ return 1; ++ } ++ case '[': ++ { ++ int not; ++ char cold; ++ ++ if (*n == '\0' || *n == '/') ++ return 1; ++ ++ not = (*p == '!' || *p == '^'); ++ if (not) ++ ++p; ++ ++ c = *p++; ++ for (;;) { ++ unsigned char fn = (unsigned char)*n; ++ ++ if (c == '\0') ++ return 1; ++ else { ++ if (c == fn) ++ goto matched; ++ cold = c; ++ c = *p++; ++ ++ if (c == '-' && *p != ']') { ++ unsigned char cend = *p++; ++ ++ if (cend == '\0') ++ return 1; ++ ++ if (cold <= fn && fn <= cend) ++ goto matched; ++ ++ c = *p++; ++ } ++ } ++ ++ if (c == ']') ++ break; ++ } ++ if (!not) ++ return 1; ++ break; ++ matched: ++ while (c != ']') { ++ if (c == '\0') ++ return 1; ++ ++ c = *p++; ++ } ++ if (not) ++ return 1; ++ } ++ break; ++ default: ++ if (c != *n) ++ return 1; ++ } ++ ++ ++n; ++ } ++ ++ if (*n == '\0') ++ return 0; ++ ++ if (*n == '/') ++ return 0; ++ ++ return 1; ++} ++ ++static struct acl_object_label * ++chk_glob_label(struct acl_object_label *globbed, ++ const struct dentry *dentry, const struct vfsmount *mnt, char **path) ++{ ++ struct acl_object_label *tmp; ++ ++ if (*path == NULL) ++ *path = gr_to_filename_nolock(dentry, mnt); ++ ++ tmp = globbed; ++ ++ while (tmp) { ++ if (!glob_match(tmp->filename, *path)) ++ return tmp; ++ tmp = tmp->next; ++ } ++ ++ return NULL; ++} ++ ++static struct acl_object_label * ++__full_lookup(const struct dentry *orig_dentry, const struct vfsmount *orig_mnt, ++ const ino_t curr_ino, const dev_t curr_dev, ++ const struct acl_subject_label *subj, char **path, const int checkglob) ++{ ++ struct acl_subject_label *tmpsubj; ++ struct acl_object_label *retval; ++ struct acl_object_label *retval2; ++ ++ tmpsubj = (struct acl_subject_label *) subj; ++ read_lock(&gr_inode_lock); ++ do { ++ retval = lookup_acl_obj_label(curr_ino, curr_dev, tmpsubj); ++ if (retval) { ++ if (checkglob && retval->globbed) { ++ retval2 = chk_glob_label(retval->globbed, orig_dentry, orig_mnt, path); ++ if (retval2) ++ retval = retval2; ++ } ++ break; ++ } ++ } while ((tmpsubj = tmpsubj->parent_subject)); ++ read_unlock(&gr_inode_lock); ++ ++ return retval; ++} ++ ++static __inline__ struct acl_object_label * ++full_lookup(const struct dentry *orig_dentry, const struct vfsmount *orig_mnt, ++ struct dentry *curr_dentry, ++ const struct acl_subject_label *subj, char **path, const int checkglob) ++{ ++ int newglob = checkglob; ++ ino_t inode; ++ dev_t device; ++ ++ /* if we aren't checking a subdirectory of the original path yet, don't do glob checking ++ as we don't want a / * rule to match instead of the / object ++ don't do this for create lookups that call this function though, since they're looking up ++ on the parent and thus need globbing checks on all paths ++ */ ++ if (orig_dentry == curr_dentry && newglob != GR_CREATE_GLOB) ++ newglob = GR_NO_GLOB; ++ ++ spin_lock(&curr_dentry->d_lock); ++ inode = curr_dentry->d_inode->i_ino; ++ device = __get_dev(curr_dentry); ++ spin_unlock(&curr_dentry->d_lock); ++ ++ return __full_lookup(orig_dentry, orig_mnt, inode, device, subj, path, newglob); ++} ++ ++static struct acl_object_label * ++__chk_obj_label(const struct dentry *l_dentry, const struct vfsmount *l_mnt, ++ const struct acl_subject_label *subj, char *path, const int checkglob) ++{ ++ struct dentry *dentry = (struct dentry *) l_dentry; ++ struct vfsmount *mnt = (struct vfsmount *) l_mnt; ++ struct mount *real_mnt = real_mount(mnt); ++ struct acl_object_label *retval; ++ struct dentry *parent; ++ ++ write_seqlock(&rename_lock); ++ br_read_lock(vfsmount_lock); ++ ++ if (unlikely((mnt == shm_mnt && dentry->d_inode->i_nlink == 0) || mnt == pipe_mnt || ++#ifdef CONFIG_NET ++ mnt == sock_mnt || ++#endif ++#ifdef CONFIG_HUGETLBFS ++ (mnt == hugetlbfs_vfsmount && dentry->d_inode->i_nlink == 0) || ++#endif ++ /* ignore Eric Biederman */ ++ IS_PRIVATE(l_dentry->d_inode))) { ++ retval = (subj->mode & GR_SHMEXEC) ? fakefs_obj_rwx : fakefs_obj_rw; ++ goto out; ++ } ++ ++ for (;;) { ++ if (dentry == real_root.dentry && mnt == real_root.mnt) ++ break; ++ ++ if (dentry == mnt->mnt_root || IS_ROOT(dentry)) { ++ if (!mnt_has_parent(real_mnt)) ++ break; ++ ++ retval = full_lookup(l_dentry, l_mnt, dentry, subj, &path, checkglob); ++ if (retval != NULL) ++ goto out; ++ ++ dentry = real_mnt->mnt_mountpoint; ++ real_mnt = real_mnt->mnt_parent; ++ mnt = &real_mnt->mnt; ++ continue; ++ } ++ ++ parent = dentry->d_parent; ++ retval = full_lookup(l_dentry, l_mnt, dentry, subj, &path, checkglob); ++ if (retval != NULL) ++ goto out; ++ ++ dentry = parent; ++ } ++ ++ retval = full_lookup(l_dentry, l_mnt, dentry, subj, &path, checkglob); ++ ++ /* real_root is pinned so we don't have to hold a reference */ ++ if (retval == NULL) ++ retval = full_lookup(l_dentry, l_mnt, real_root.dentry, subj, &path, checkglob); ++out: ++ br_read_unlock(vfsmount_lock); ++ write_sequnlock(&rename_lock); ++ ++ BUG_ON(retval == NULL); ++ ++ return retval; ++} ++ ++static __inline__ struct acl_object_label * ++chk_obj_label(const struct dentry *l_dentry, const struct vfsmount *l_mnt, ++ const struct acl_subject_label *subj) ++{ ++ char *path = NULL; ++ return __chk_obj_label(l_dentry, l_mnt, subj, path, GR_REG_GLOB); ++} ++ ++static __inline__ struct acl_object_label * ++chk_obj_label_noglob(const struct dentry *l_dentry, const struct vfsmount *l_mnt, ++ const struct acl_subject_label *subj) ++{ ++ char *path = NULL; ++ return __chk_obj_label(l_dentry, l_mnt, subj, path, GR_NO_GLOB); ++} ++ ++static __inline__ struct acl_object_label * ++chk_obj_create_label(const struct dentry *l_dentry, const struct vfsmount *l_mnt, ++ const struct acl_subject_label *subj, char *path) ++{ ++ return __chk_obj_label(l_dentry, l_mnt, subj, path, GR_CREATE_GLOB); ++} ++ ++static struct acl_subject_label * ++chk_subj_label(const struct dentry *l_dentry, const struct vfsmount *l_mnt, ++ const struct acl_role_label *role) ++{ ++ struct dentry *dentry = (struct dentry *) l_dentry; ++ struct vfsmount *mnt = (struct vfsmount *) l_mnt; ++ struct mount *real_mnt = real_mount(mnt); ++ struct acl_subject_label *retval; ++ struct dentry *parent; ++ ++ write_seqlock(&rename_lock); ++ br_read_lock(vfsmount_lock); ++ ++ for (;;) { ++ if (dentry == real_root.dentry && mnt == real_root.mnt) ++ break; ++ if (dentry == mnt->mnt_root || IS_ROOT(dentry)) { ++ if (!mnt_has_parent(real_mnt)) ++ break; ++ ++ spin_lock(&dentry->d_lock); ++ read_lock(&gr_inode_lock); ++ retval = ++ lookup_acl_subj_label(dentry->d_inode->i_ino, ++ __get_dev(dentry), role); ++ read_unlock(&gr_inode_lock); ++ spin_unlock(&dentry->d_lock); ++ if (retval != NULL) ++ goto out; ++ ++ dentry = real_mnt->mnt_mountpoint; ++ real_mnt = real_mnt->mnt_parent; ++ mnt = &real_mnt->mnt; ++ continue; ++ } ++ ++ spin_lock(&dentry->d_lock); ++ read_lock(&gr_inode_lock); ++ retval = lookup_acl_subj_label(dentry->d_inode->i_ino, ++ __get_dev(dentry), role); ++ read_unlock(&gr_inode_lock); ++ parent = dentry->d_parent; ++ spin_unlock(&dentry->d_lock); ++ ++ if (retval != NULL) ++ goto out; ++ ++ dentry = parent; ++ } ++ ++ spin_lock(&dentry->d_lock); ++ read_lock(&gr_inode_lock); ++ retval = lookup_acl_subj_label(dentry->d_inode->i_ino, ++ __get_dev(dentry), role); ++ read_unlock(&gr_inode_lock); ++ spin_unlock(&dentry->d_lock); ++ ++ if (unlikely(retval == NULL)) { ++ /* real_root is pinned, we don't need to hold a reference */ ++ read_lock(&gr_inode_lock); ++ retval = lookup_acl_subj_label(real_root.dentry->d_inode->i_ino, ++ __get_dev(real_root.dentry), role); ++ read_unlock(&gr_inode_lock); ++ } ++out: ++ br_read_unlock(vfsmount_lock); ++ write_sequnlock(&rename_lock); ++ ++ BUG_ON(retval == NULL); ++ ++ return retval; ++} ++ ++static void ++gr_log_learn(const struct dentry *dentry, const struct vfsmount *mnt, const __u32 mode) ++{ ++ struct task_struct *task = current; ++ const struct cred *cred = current_cred(); ++ ++ security_learn(GR_LEARN_AUDIT_MSG, task->role->rolename, task->role->roletype, ++ cred->uid, cred->gid, task->exec_file ? gr_to_filename1(task->exec_file->f_path.dentry, ++ task->exec_file->f_path.mnt) : task->acl->filename, task->acl->filename, ++ 1UL, 1UL, gr_to_filename(dentry, mnt), (unsigned long) mode, &task->signal->saved_ip); ++ ++ return; ++} ++ ++static void ++gr_log_learn_id_change(const char type, const unsigned int real, ++ const unsigned int effective, const unsigned int fs) ++{ ++ struct task_struct *task = current; ++ const struct cred *cred = current_cred(); ++ ++ security_learn(GR_ID_LEARN_MSG, task->role->rolename, task->role->roletype, ++ cred->uid, cred->gid, task->exec_file ? gr_to_filename1(task->exec_file->f_path.dentry, ++ task->exec_file->f_path.mnt) : task->acl->filename, task->acl->filename, ++ type, real, effective, fs, &task->signal->saved_ip); ++ ++ return; ++} ++ ++__u32 ++gr_search_file(const struct dentry * dentry, const __u32 mode, ++ const struct vfsmount * mnt) ++{ ++ __u32 retval = mode; ++ struct acl_subject_label *curracl; ++ struct acl_object_label *currobj; ++ ++ if (unlikely(!(gr_status & GR_READY))) ++ return (mode & ~GR_AUDITS); ++ ++ curracl = current->acl; ++ ++ currobj = chk_obj_label(dentry, mnt, curracl); ++ retval = currobj->mode & mode; ++ ++ /* if we're opening a specified transfer file for writing ++ (e.g. /dev/initctl), then transfer our role to init ++ */ ++ if (unlikely(currobj->mode & GR_INIT_TRANSFER && retval & GR_WRITE && ++ current->role->roletype & GR_ROLE_PERSIST)) { ++ struct task_struct *task = init_pid_ns.child_reaper; ++ ++ if (task->role != current->role) { ++ task->acl_sp_role = 0; ++ task->acl_role_id = current->acl_role_id; ++ task->role = current->role; ++ rcu_read_lock(); ++ read_lock(&grsec_exec_file_lock); ++ gr_apply_subject_to_task(task); ++ read_unlock(&grsec_exec_file_lock); ++ rcu_read_unlock(); ++ gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_INIT_TRANSFER_MSG); ++ } ++ } ++ ++ if (unlikely ++ ((curracl->mode & (GR_LEARN | GR_INHERITLEARN)) && !(mode & GR_NOPTRACE) ++ && (retval != (mode & ~(GR_AUDITS | GR_SUPPRESS))))) { ++ __u32 new_mode = mode; ++ ++ new_mode &= ~(GR_AUDITS | GR_SUPPRESS); ++ ++ retval = new_mode; ++ ++ if (new_mode & GR_EXEC && curracl->mode & GR_INHERITLEARN) ++ new_mode |= GR_INHERIT; ++ ++ if (!(mode & GR_NOLEARN)) ++ gr_log_learn(dentry, mnt, new_mode); ++ } ++ ++ return retval; ++} ++ ++struct acl_object_label *gr_get_create_object(const struct dentry *new_dentry, ++ const struct dentry *parent, ++ const struct vfsmount *mnt) ++{ ++ struct name_entry *match; ++ struct acl_object_label *matchpo; ++ struct acl_subject_label *curracl; ++ char *path; ++ ++ if (unlikely(!(gr_status & GR_READY))) ++ return NULL; ++ ++ preempt_disable(); ++ path = gr_to_filename_rbac(new_dentry, mnt); ++ match = lookup_name_entry_create(path); ++ ++ curracl = current->acl; ++ ++ if (match) { ++ read_lock(&gr_inode_lock); ++ matchpo = lookup_acl_obj_label_create(match->inode, match->device, curracl); ++ read_unlock(&gr_inode_lock); ++ ++ if (matchpo) { ++ preempt_enable(); ++ return matchpo; ++ } ++ } ++ ++ // lookup parent ++ ++ matchpo = chk_obj_create_label(parent, mnt, curracl, path); ++ ++ preempt_enable(); ++ return matchpo; ++} ++ ++__u32 ++gr_check_create(const struct dentry * new_dentry, const struct dentry * parent, ++ const struct vfsmount * mnt, const __u32 mode) ++{ ++ struct acl_object_label *matchpo; ++ __u32 retval; ++ ++ if (unlikely(!(gr_status & GR_READY))) ++ return (mode & ~GR_AUDITS); ++ ++ matchpo = gr_get_create_object(new_dentry, parent, mnt); ++ ++ retval = matchpo->mode & mode; ++ ++ if ((retval != (mode & ~(GR_AUDITS | GR_SUPPRESS))) ++ && (current->acl->mode & (GR_LEARN | GR_INHERITLEARN))) { ++ __u32 new_mode = mode; ++ ++ new_mode &= ~(GR_AUDITS | GR_SUPPRESS); ++ ++ gr_log_learn(new_dentry, mnt, new_mode); ++ return new_mode; ++ } ++ ++ return retval; ++} ++ ++__u32 ++gr_check_link(const struct dentry * new_dentry, ++ const struct dentry * parent_dentry, ++ const struct vfsmount * parent_mnt, ++ const struct dentry * old_dentry, const struct vfsmount * old_mnt) ++{ ++ struct acl_object_label *obj; ++ __u32 oldmode, newmode; ++ __u32 needmode; ++ __u32 checkmodes = GR_FIND | GR_APPEND | GR_WRITE | GR_EXEC | GR_SETID | GR_READ | ++ GR_DELETE | GR_INHERIT; ++ ++ if (unlikely(!(gr_status & GR_READY))) ++ return (GR_CREATE | GR_LINK); ++ ++ obj = chk_obj_label(old_dentry, old_mnt, current->acl); ++ oldmode = obj->mode; ++ ++ obj = gr_get_create_object(new_dentry, parent_dentry, parent_mnt); ++ newmode = obj->mode; ++ ++ needmode = newmode & checkmodes; ++ ++ // old name for hardlink must have at least the permissions of the new name ++ if ((oldmode & needmode) != needmode) ++ goto bad; ++ ++ // if old name had restrictions/auditing, make sure the new name does as well ++ needmode = oldmode & (GR_NOPTRACE | GR_PTRACERD | GR_INHERIT | GR_AUDITS); ++ ++ // don't allow hardlinking of suid/sgid files without permission ++ if (old_dentry->d_inode->i_mode & (S_ISUID | S_ISGID)) ++ needmode |= GR_SETID; ++ ++ if ((newmode & needmode) != needmode) ++ goto bad; ++ ++ // enforce minimum permissions ++ if ((newmode & (GR_CREATE | GR_LINK)) == (GR_CREATE | GR_LINK)) ++ return newmode; ++bad: ++ needmode = oldmode; ++ if (old_dentry->d_inode->i_mode & (S_ISUID | S_ISGID)) ++ needmode |= GR_SETID; ++ ++ if (current->acl->mode & (GR_LEARN | GR_INHERITLEARN)) { ++ gr_log_learn(old_dentry, old_mnt, needmode | GR_CREATE | GR_LINK); ++ return (GR_CREATE | GR_LINK); ++ } else if (newmode & GR_SUPPRESS) ++ return GR_SUPPRESS; ++ else ++ return 0; ++} ++ ++int ++gr_check_hidden_task(const struct task_struct *task) ++{ ++ if (unlikely(!(gr_status & GR_READY))) ++ return 0; ++ ++ if (!(task->acl->mode & GR_PROCFIND) && !(current->acl->mode & GR_VIEW)) ++ return 1; ++ ++ return 0; ++} ++ ++int ++gr_check_protected_task(const struct task_struct *task) ++{ ++ if (unlikely(!(gr_status & GR_READY) || !task)) ++ return 0; ++ ++ if ((task->acl->mode & GR_PROTECTED) && !(current->acl->mode & GR_KILL) && ++ task->acl != current->acl) ++ return 1; ++ ++ return 0; ++} ++ ++int ++gr_check_protected_task_fowner(struct pid *pid, enum pid_type type) ++{ ++ struct task_struct *p; ++ int ret = 0; ++ ++ if (unlikely(!(gr_status & GR_READY) || !pid)) ++ return ret; ++ ++ read_lock(&tasklist_lock); ++ do_each_pid_task(pid, type, p) { ++ if ((p->acl->mode & GR_PROTECTED) && !(current->acl->mode & GR_KILL) && ++ p->acl != current->acl) { ++ ret = 1; ++ goto out; ++ } ++ } while_each_pid_task(pid, type, p); ++out: ++ read_unlock(&tasklist_lock); ++ ++ return ret; ++} ++ ++void ++gr_copy_label(struct task_struct *tsk) ++{ ++ tsk->signal->used_accept = 0; ++ tsk->acl_sp_role = 0; ++ tsk->acl_role_id = current->acl_role_id; ++ tsk->acl = current->acl; ++ tsk->role = current->role; ++ tsk->signal->curr_ip = current->signal->curr_ip; ++ tsk->signal->saved_ip = current->signal->saved_ip; ++ if (current->exec_file) ++ get_file(current->exec_file); ++ tsk->exec_file = current->exec_file; ++ tsk->is_writable = current->is_writable; ++ if (unlikely(current->signal->used_accept)) { ++ current->signal->curr_ip = 0; ++ current->signal->saved_ip = 0; ++ } ++ ++ return; ++} ++ ++static void ++gr_set_proc_res(struct task_struct *task) ++{ ++ struct acl_subject_label *proc; ++ unsigned short i; ++ ++ proc = task->acl; ++ ++ if (proc->mode & (GR_LEARN | GR_INHERITLEARN)) ++ return; ++ ++ for (i = 0; i < RLIM_NLIMITS; i++) { ++ if (!(proc->resmask & (1 << i))) ++ continue; ++ ++ task->signal->rlim[i].rlim_cur = proc->res[i].rlim_cur; ++ task->signal->rlim[i].rlim_max = proc->res[i].rlim_max; ++ } ++ ++ return; ++} ++ ++extern int __gr_process_user_ban(struct user_struct *user); ++ ++int ++gr_check_user_change(int real, int effective, int fs) ++{ ++ unsigned int i; ++ __u16 num; ++ uid_t *uidlist; ++ int curuid; ++ int realok = 0; ++ int effectiveok = 0; ++ int fsok = 0; ++ ++#if defined(CONFIG_GRKERNSEC_KERN_LOCKOUT) || defined(CONFIG_GRKERNSEC_BRUTE) ++ struct user_struct *user; ++ ++ if (real == -1) ++ goto skipit; ++ ++ user = find_user(real); ++ if (user == NULL) ++ goto skipit; ++ ++ if (__gr_process_user_ban(user)) { ++ /* for find_user */ ++ free_uid(user); ++ return 1; ++ } ++ ++ /* for find_user */ ++ free_uid(user); ++ ++skipit: ++#endif ++ ++ if (unlikely(!(gr_status & GR_READY))) ++ return 0; ++ ++ if (current->acl->mode & (GR_LEARN | GR_INHERITLEARN)) ++ gr_log_learn_id_change('u', real, effective, fs); ++ ++ num = current->acl->user_trans_num; ++ uidlist = current->acl->user_transitions; ++ ++ if (uidlist == NULL) ++ return 0; ++ ++ if (real == -1) ++ realok = 1; ++ if (effective == -1) ++ effectiveok = 1; ++ if (fs == -1) ++ fsok = 1; ++ ++ if (current->acl->user_trans_type & GR_ID_ALLOW) { ++ for (i = 0; i < num; i++) { ++ curuid = (int)uidlist[i]; ++ if (real == curuid) ++ realok = 1; ++ if (effective == curuid) ++ effectiveok = 1; ++ if (fs == curuid) ++ fsok = 1; ++ } ++ } else if (current->acl->user_trans_type & GR_ID_DENY) { ++ for (i = 0; i < num; i++) { ++ curuid = (int)uidlist[i]; ++ if (real == curuid) ++ break; ++ if (effective == curuid) ++ break; ++ if (fs == curuid) ++ break; ++ } ++ /* not in deny list */ ++ if (i == num) { ++ realok = 1; ++ effectiveok = 1; ++ fsok = 1; ++ } ++ } ++ ++ if (realok && effectiveok && fsok) ++ return 0; ++ else { ++ gr_log_int(GR_DONT_AUDIT, GR_USRCHANGE_ACL_MSG, realok ? (effectiveok ? (fsok ? 0 : fs) : effective) : real); ++ return 1; ++ } ++} ++ ++int ++gr_check_group_change(int real, int effective, int fs) ++{ ++ unsigned int i; ++ __u16 num; ++ gid_t *gidlist; ++ int curgid; ++ int realok = 0; ++ int effectiveok = 0; ++ int fsok = 0; ++ ++ if (unlikely(!(gr_status & GR_READY))) ++ return 0; ++ ++ if (current->acl->mode & (GR_LEARN | GR_INHERITLEARN)) ++ gr_log_learn_id_change('g', real, effective, fs); ++ ++ num = current->acl->group_trans_num; ++ gidlist = current->acl->group_transitions; ++ ++ if (gidlist == NULL) ++ return 0; ++ ++ if (real == -1) ++ realok = 1; ++ if (effective == -1) ++ effectiveok = 1; ++ if (fs == -1) ++ fsok = 1; ++ ++ if (current->acl->group_trans_type & GR_ID_ALLOW) { ++ for (i = 0; i < num; i++) { ++ curgid = (int)gidlist[i]; ++ if (real == curgid) ++ realok = 1; ++ if (effective == curgid) ++ effectiveok = 1; ++ if (fs == curgid) ++ fsok = 1; ++ } ++ } else if (current->acl->group_trans_type & GR_ID_DENY) { ++ for (i = 0; i < num; i++) { ++ curgid = (int)gidlist[i]; ++ if (real == curgid) ++ break; ++ if (effective == curgid) ++ break; ++ if (fs == curgid) ++ break; ++ } ++ /* not in deny list */ ++ if (i == num) { ++ realok = 1; ++ effectiveok = 1; ++ fsok = 1; ++ } ++ } ++ ++ if (realok && effectiveok && fsok) ++ return 0; ++ else { ++ gr_log_int(GR_DONT_AUDIT, GR_GRPCHANGE_ACL_MSG, realok ? (effectiveok ? (fsok ? 0 : fs) : effective) : real); ++ return 1; ++ } ++} ++ ++extern int gr_acl_is_capable(const int cap); ++ ++void ++gr_set_role_label(struct task_struct *task, const uid_t uid, const uid_t gid) ++{ ++ struct acl_role_label *role = task->role; ++ struct acl_subject_label *subj = NULL; ++ struct acl_object_label *obj; ++ struct file *filp; ++ ++ if (unlikely(!(gr_status & GR_READY))) ++ return; ++ ++ filp = task->exec_file; ++ ++ /* kernel process, we'll give them the kernel role */ ++ if (unlikely(!filp)) { ++ task->role = kernel_role; ++ task->acl = kernel_role->root_label; ++ return; ++ } else if (!task->role || !(task->role->roletype & GR_ROLE_SPECIAL)) ++ role = lookup_acl_role_label(task, uid, gid); ++ ++ /* don't change the role if we're not a privileged process */ ++ if (role && task->role != role && ++ (((role->roletype & GR_ROLE_USER) && !gr_acl_is_capable(CAP_SETUID)) || ++ ((role->roletype & GR_ROLE_GROUP) && !gr_acl_is_capable(CAP_SETGID)))) ++ return; ++ ++ /* perform subject lookup in possibly new role ++ we can use this result below in the case where role == task->role ++ */ ++ subj = chk_subj_label(filp->f_path.dentry, filp->f_path.mnt, role); ++ ++ /* if we changed uid/gid, but result in the same role ++ and are using inheritance, don't lose the inherited subject ++ if current subject is other than what normal lookup ++ would result in, we arrived via inheritance, don't ++ lose subject ++ */ ++ if (role != task->role || (!(task->acl->mode & GR_INHERITLEARN) && ++ (subj == task->acl))) ++ task->acl = subj; ++ ++ task->role = role; ++ ++ task->is_writable = 0; ++ ++ /* ignore additional mmap checks for processes that are writable ++ by the default ACL */ ++ obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, default_role->root_label); ++ if (unlikely(obj->mode & GR_WRITE)) ++ task->is_writable = 1; ++ obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, task->role->root_label); ++ if (unlikely(obj->mode & GR_WRITE)) ++ task->is_writable = 1; ++ ++#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG ++ printk(KERN_ALERT "Set role label for (%s:%d): role:%s, subject:%s\n", task->comm, task->pid, task->role->rolename, task->acl->filename); ++#endif ++ ++ gr_set_proc_res(task); ++ ++ return; ++} ++ ++int ++gr_set_proc_label(const struct dentry *dentry, const struct vfsmount *mnt, ++ const int unsafe_flags) ++{ ++ struct task_struct *task = current; ++ struct acl_subject_label *newacl; ++ struct acl_object_label *obj; ++ __u32 retmode; ++ ++ if (unlikely(!(gr_status & GR_READY))) ++ return 0; ++ ++ newacl = chk_subj_label(dentry, mnt, task->role); ++ ++ /* special handling for if we did an strace -f -p <pid> from an admin role, where pid then ++ did an exec ++ */ ++ rcu_read_lock(); ++ read_lock(&tasklist_lock); ++ if (task->ptrace && task->parent && ((task->parent->role->roletype & GR_ROLE_GOD) || ++ (task->parent->acl->mode & GR_POVERRIDE))) { ++ read_unlock(&tasklist_lock); ++ rcu_read_unlock(); ++ goto skip_check; ++ } ++ read_unlock(&tasklist_lock); ++ rcu_read_unlock(); ++ ++ if (unsafe_flags && !(task->acl->mode & GR_POVERRIDE) && (task->acl != newacl) && ++ !(task->role->roletype & GR_ROLE_GOD) && ++ !gr_search_file(dentry, GR_PTRACERD, mnt) && ++ !(task->acl->mode & (GR_LEARN | GR_INHERITLEARN))) { ++ if (unsafe_flags & LSM_UNSAFE_SHARE) ++ gr_log_fs_generic(GR_DONT_AUDIT, GR_UNSAFESHARE_EXEC_ACL_MSG, dentry, mnt); ++ else ++ gr_log_fs_generic(GR_DONT_AUDIT, GR_PTRACE_EXEC_ACL_MSG, dentry, mnt); ++ return -EACCES; ++ } ++ ++skip_check: ++ ++ obj = chk_obj_label(dentry, mnt, task->acl); ++ retmode = obj->mode & (GR_INHERIT | GR_AUDIT_INHERIT); ++ ++ if (!(task->acl->mode & GR_INHERITLEARN) && ++ ((newacl->mode & GR_LEARN) || !(retmode & GR_INHERIT))) { ++ if (obj->nested) ++ task->acl = obj->nested; ++ else ++ task->acl = newacl; ++ } else if (retmode & GR_INHERIT && retmode & GR_AUDIT_INHERIT) ++ gr_log_str_fs(GR_DO_AUDIT, GR_INHERIT_ACL_MSG, task->acl->filename, dentry, mnt); ++ ++ task->is_writable = 0; ++ ++ /* ignore additional mmap checks for processes that are writable ++ by the default ACL */ ++ obj = chk_obj_label(dentry, mnt, default_role->root_label); ++ if (unlikely(obj->mode & GR_WRITE)) ++ task->is_writable = 1; ++ obj = chk_obj_label(dentry, mnt, task->role->root_label); ++ if (unlikely(obj->mode & GR_WRITE)) ++ task->is_writable = 1; ++ ++ gr_set_proc_res(task); ++ ++#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG ++ printk(KERN_ALERT "Set subject label for (%s:%d): role:%s, subject:%s\n", task->comm, task->pid, task->role->rolename, task->acl->filename); ++#endif ++ return 0; ++} ++ ++/* always called with valid inodev ptr */ ++static void ++do_handle_delete(struct inodev_entry *inodev, const ino_t ino, const dev_t dev) ++{ ++ struct acl_object_label *matchpo; ++ struct acl_subject_label *matchps; ++ struct acl_subject_label *subj; ++ struct acl_role_label *role; ++ unsigned int x; ++ ++ FOR_EACH_ROLE_START(role) ++ FOR_EACH_SUBJECT_START(role, subj, x) ++ if ((matchpo = lookup_acl_obj_label(ino, dev, subj)) != NULL) ++ matchpo->mode |= GR_DELETED; ++ FOR_EACH_SUBJECT_END(subj,x) ++ FOR_EACH_NESTED_SUBJECT_START(role, subj) ++ if (subj->inode == ino && subj->device == dev) ++ subj->mode |= GR_DELETED; ++ FOR_EACH_NESTED_SUBJECT_END(subj) ++ if ((matchps = lookup_acl_subj_label(ino, dev, role)) != NULL) ++ matchps->mode |= GR_DELETED; ++ FOR_EACH_ROLE_END(role) ++ ++ inodev->nentry->deleted = 1; ++ ++ return; ++} ++ ++void ++gr_handle_delete(const ino_t ino, const dev_t dev) ++{ ++ struct inodev_entry *inodev; ++ ++ if (unlikely(!(gr_status & GR_READY))) ++ return; ++ ++ write_lock(&gr_inode_lock); ++ inodev = lookup_inodev_entry(ino, dev); ++ if (inodev != NULL) ++ do_handle_delete(inodev, ino, dev); ++ write_unlock(&gr_inode_lock); ++ ++ return; ++} ++ ++static void ++update_acl_obj_label(const ino_t oldinode, const dev_t olddevice, ++ const ino_t newinode, const dev_t newdevice, ++ struct acl_subject_label *subj) ++{ ++ unsigned int index = fhash(oldinode, olddevice, subj->obj_hash_size); ++ struct acl_object_label *match; ++ ++ match = subj->obj_hash[index]; ++ ++ while (match && (match->inode != oldinode || ++ match->device != olddevice || ++ !(match->mode & GR_DELETED))) ++ match = match->next; ++ ++ if (match && (match->inode == oldinode) ++ && (match->device == olddevice) ++ && (match->mode & GR_DELETED)) { ++ if (match->prev == NULL) { ++ subj->obj_hash[index] = match->next; ++ if (match->next != NULL) ++ match->next->prev = NULL; ++ } else { ++ match->prev->next = match->next; ++ if (match->next != NULL) ++ match->next->prev = match->prev; ++ } ++ match->prev = NULL; ++ match->next = NULL; ++ match->inode = newinode; ++ match->device = newdevice; ++ match->mode &= ~GR_DELETED; ++ ++ insert_acl_obj_label(match, subj); ++ } ++ ++ return; ++} ++ ++static void ++update_acl_subj_label(const ino_t oldinode, const dev_t olddevice, ++ const ino_t newinode, const dev_t newdevice, ++ struct acl_role_label *role) ++{ ++ unsigned int index = fhash(oldinode, olddevice, role->subj_hash_size); ++ struct acl_subject_label *match; ++ ++ match = role->subj_hash[index]; ++ ++ while (match && (match->inode != oldinode || ++ match->device != olddevice || ++ !(match->mode & GR_DELETED))) ++ match = match->next; ++ ++ if (match && (match->inode == oldinode) ++ && (match->device == olddevice) ++ && (match->mode & GR_DELETED)) { ++ if (match->prev == NULL) { ++ role->subj_hash[index] = match->next; ++ if (match->next != NULL) ++ match->next->prev = NULL; ++ } else { ++ match->prev->next = match->next; ++ if (match->next != NULL) ++ match->next->prev = match->prev; ++ } ++ match->prev = NULL; ++ match->next = NULL; ++ match->inode = newinode; ++ match->device = newdevice; ++ match->mode &= ~GR_DELETED; ++ ++ insert_acl_subj_label(match, role); ++ } ++ ++ return; ++} ++ ++static void ++update_inodev_entry(const ino_t oldinode, const dev_t olddevice, ++ const ino_t newinode, const dev_t newdevice) ++{ ++ unsigned int index = fhash(oldinode, olddevice, inodev_set.i_size); ++ struct inodev_entry *match; ++ ++ match = inodev_set.i_hash[index]; ++ ++ while (match && (match->nentry->inode != oldinode || ++ match->nentry->device != olddevice || !match->nentry->deleted)) ++ match = match->next; ++ ++ if (match && (match->nentry->inode == oldinode) ++ && (match->nentry->device == olddevice) && ++ match->nentry->deleted) { ++ if (match->prev == NULL) { ++ inodev_set.i_hash[index] = match->next; ++ if (match->next != NULL) ++ match->next->prev = NULL; ++ } else { ++ match->prev->next = match->next; ++ if (match->next != NULL) ++ match->next->prev = match->prev; ++ } ++ match->prev = NULL; ++ match->next = NULL; ++ match->nentry->inode = newinode; ++ match->nentry->device = newdevice; ++ match->nentry->deleted = 0; ++ ++ insert_inodev_entry(match); ++ } ++ ++ return; ++} ++ ++static void ++__do_handle_create(const struct name_entry *matchn, ino_t ino, dev_t dev) ++{ ++ struct acl_subject_label *subj; ++ struct acl_role_label *role; ++ unsigned int x; ++ ++ FOR_EACH_ROLE_START(role) ++ update_acl_subj_label(matchn->inode, matchn->device, ino, dev, role); ++ ++ FOR_EACH_NESTED_SUBJECT_START(role, subj) ++ if ((subj->inode == ino) && (subj->device == dev)) { ++ subj->inode = ino; ++ subj->device = dev; ++ } ++ FOR_EACH_NESTED_SUBJECT_END(subj) ++ FOR_EACH_SUBJECT_START(role, subj, x) ++ update_acl_obj_label(matchn->inode, matchn->device, ++ ino, dev, subj); ++ FOR_EACH_SUBJECT_END(subj,x) ++ FOR_EACH_ROLE_END(role) ++ ++ update_inodev_entry(matchn->inode, matchn->device, ino, dev); ++ ++ return; ++} ++ ++static void ++do_handle_create(const struct name_entry *matchn, const struct dentry *dentry, ++ const struct vfsmount *mnt) ++{ ++ ino_t ino = dentry->d_inode->i_ino; ++ dev_t dev = __get_dev(dentry); ++ ++ __do_handle_create(matchn, ino, dev); ++ ++ return; ++} ++ ++void ++gr_handle_create(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++ struct name_entry *matchn; ++ ++ if (unlikely(!(gr_status & GR_READY))) ++ return; ++ ++ preempt_disable(); ++ matchn = lookup_name_entry(gr_to_filename_rbac(dentry, mnt)); ++ ++ if (unlikely((unsigned long)matchn)) { ++ write_lock(&gr_inode_lock); ++ do_handle_create(matchn, dentry, mnt); ++ write_unlock(&gr_inode_lock); ++ } ++ preempt_enable(); ++ ++ return; ++} ++ ++void ++gr_handle_proc_create(const struct dentry *dentry, const struct inode *inode) ++{ ++ struct name_entry *matchn; ++ ++ if (unlikely(!(gr_status & GR_READY))) ++ return; ++ ++ preempt_disable(); ++ matchn = lookup_name_entry(gr_to_proc_filename_rbac(dentry, init_pid_ns.proc_mnt)); ++ ++ if (unlikely((unsigned long)matchn)) { ++ write_lock(&gr_inode_lock); ++ __do_handle_create(matchn, inode->i_ino, inode->i_sb->s_dev); ++ write_unlock(&gr_inode_lock); ++ } ++ preempt_enable(); ++ ++ return; ++} ++ ++void ++gr_handle_rename(struct inode *old_dir, struct inode *new_dir, ++ struct dentry *old_dentry, ++ struct dentry *new_dentry, ++ struct vfsmount *mnt, const __u8 replace) ++{ ++ struct name_entry *matchn; ++ struct inodev_entry *inodev; ++ struct inode *inode = new_dentry->d_inode; ++ ino_t old_ino = old_dentry->d_inode->i_ino; ++ dev_t old_dev = __get_dev(old_dentry); ++ ++ /* vfs_rename swaps the name and parent link for old_dentry and ++ new_dentry ++ at this point, old_dentry has the new name, parent link, and inode ++ for the renamed file ++ if a file is being replaced by a rename, new_dentry has the inode ++ and name for the replaced file ++ */ ++ ++ if (unlikely(!(gr_status & GR_READY))) ++ return; ++ ++ preempt_disable(); ++ matchn = lookup_name_entry(gr_to_filename_rbac(old_dentry, mnt)); ++ ++ /* we wouldn't have to check d_inode if it weren't for ++ NFS silly-renaming ++ */ ++ ++ write_lock(&gr_inode_lock); ++ if (unlikely(replace && inode)) { ++ ino_t new_ino = inode->i_ino; ++ dev_t new_dev = __get_dev(new_dentry); ++ ++ inodev = lookup_inodev_entry(new_ino, new_dev); ++ if (inodev != NULL && ((inode->i_nlink <= 1) || S_ISDIR(inode->i_mode))) ++ do_handle_delete(inodev, new_ino, new_dev); ++ } ++ ++ inodev = lookup_inodev_entry(old_ino, old_dev); ++ if (inodev != NULL && ((old_dentry->d_inode->i_nlink <= 1) || S_ISDIR(old_dentry->d_inode->i_mode))) ++ do_handle_delete(inodev, old_ino, old_dev); ++ ++ if (unlikely((unsigned long)matchn)) ++ do_handle_create(matchn, old_dentry, mnt); ++ ++ write_unlock(&gr_inode_lock); ++ preempt_enable(); ++ ++ return; ++} ++ ++static int ++lookup_special_role_auth(__u16 mode, const char *rolename, unsigned char **salt, ++ unsigned char **sum) ++{ ++ struct acl_role_label *r; ++ struct role_allowed_ip *ipp; ++ struct role_transition *trans; ++ unsigned int i; ++ int found = 0; ++ u32 curr_ip = current->signal->curr_ip; ++ ++ current->signal->saved_ip = curr_ip; ++ ++ /* check transition table */ ++ ++ for (trans = current->role->transitions; trans; trans = trans->next) { ++ if (!strcmp(rolename, trans->rolename)) { ++ found = 1; ++ break; ++ } ++ } ++ ++ if (!found) ++ return 0; ++ ++ /* handle special roles that do not require authentication ++ and check ip */ ++ ++ FOR_EACH_ROLE_START(r) ++ if (!strcmp(rolename, r->rolename) && ++ (r->roletype & GR_ROLE_SPECIAL)) { ++ found = 0; ++ if (r->allowed_ips != NULL) { ++ for (ipp = r->allowed_ips; ipp; ipp = ipp->next) { ++ if ((ntohl(curr_ip) & ipp->netmask) == ++ (ntohl(ipp->addr) & ipp->netmask)) ++ found = 1; ++ } ++ } else ++ found = 2; ++ if (!found) ++ return 0; ++ ++ if (((mode == GR_SPROLE) && (r->roletype & GR_ROLE_NOPW)) || ++ ((mode == GR_SPROLEPAM) && (r->roletype & GR_ROLE_PAM))) { ++ *salt = NULL; ++ *sum = NULL; ++ return 1; ++ } ++ } ++ FOR_EACH_ROLE_END(r) ++ ++ for (i = 0; i < num_sprole_pws; i++) { ++ if (!strcmp(rolename, acl_special_roles[i]->rolename)) { ++ *salt = acl_special_roles[i]->salt; ++ *sum = acl_special_roles[i]->sum; ++ return 1; ++ } ++ } ++ ++ return 0; ++} ++ ++static void ++assign_special_role(char *rolename) ++{ ++ struct acl_object_label *obj; ++ struct acl_role_label *r; ++ struct acl_role_label *assigned = NULL; ++ struct task_struct *tsk; ++ struct file *filp; ++ ++ FOR_EACH_ROLE_START(r) ++ if (!strcmp(rolename, r->rolename) && ++ (r->roletype & GR_ROLE_SPECIAL)) { ++ assigned = r; ++ break; ++ } ++ FOR_EACH_ROLE_END(r) ++ ++ if (!assigned) ++ return; ++ ++ read_lock(&tasklist_lock); ++ read_lock(&grsec_exec_file_lock); ++ ++ tsk = current->real_parent; ++ if (tsk == NULL) ++ goto out_unlock; ++ ++ filp = tsk->exec_file; ++ if (filp == NULL) ++ goto out_unlock; ++ ++ tsk->is_writable = 0; ++ ++ tsk->acl_sp_role = 1; ++ tsk->acl_role_id = ++acl_sp_role_value; ++ tsk->role = assigned; ++ tsk->acl = chk_subj_label(filp->f_path.dentry, filp->f_path.mnt, tsk->role); ++ ++ /* ignore additional mmap checks for processes that are writable ++ by the default ACL */ ++ obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, default_role->root_label); ++ if (unlikely(obj->mode & GR_WRITE)) ++ tsk->is_writable = 1; ++ obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, tsk->role->root_label); ++ if (unlikely(obj->mode & GR_WRITE)) ++ tsk->is_writable = 1; ++ ++#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG ++ printk(KERN_ALERT "Assigning special role:%s subject:%s to process (%s:%d)\n", tsk->role->rolename, tsk->acl->filename, tsk->comm, tsk->pid); ++#endif ++ ++out_unlock: ++ read_unlock(&grsec_exec_file_lock); ++ read_unlock(&tasklist_lock); ++ return; ++} ++ ++int gr_check_secure_terminal(struct task_struct *task) ++{ ++ struct task_struct *p, *p2, *p3; ++ struct files_struct *files; ++ struct fdtable *fdt; ++ struct file *our_file = NULL, *file; ++ int i; ++ ++ if (task->signal->tty == NULL) ++ return 1; ++ ++ files = get_files_struct(task); ++ if (files != NULL) { ++ rcu_read_lock(); ++ fdt = files_fdtable(files); ++ for (i=0; i < fdt->max_fds; i++) { ++ file = fcheck_files(files, i); ++ if (file && (our_file == NULL) && (file->private_data == task->signal->tty)) { ++ get_file(file); ++ our_file = file; ++ } ++ } ++ rcu_read_unlock(); ++ put_files_struct(files); ++ } ++ ++ if (our_file == NULL) ++ return 1; ++ ++ read_lock(&tasklist_lock); ++ do_each_thread(p2, p) { ++ files = get_files_struct(p); ++ if (files == NULL || ++ (p->signal && p->signal->tty == task->signal->tty)) { ++ if (files != NULL) ++ put_files_struct(files); ++ continue; ++ } ++ rcu_read_lock(); ++ fdt = files_fdtable(files); ++ for (i=0; i < fdt->max_fds; i++) { ++ file = fcheck_files(files, i); ++ if (file && S_ISCHR(file->f_path.dentry->d_inode->i_mode) && ++ file->f_path.dentry->d_inode->i_rdev == our_file->f_path.dentry->d_inode->i_rdev) { ++ p3 = task; ++ while (p3->pid > 0) { ++ if (p3 == p) ++ break; ++ p3 = p3->real_parent; ++ } ++ if (p3 == p) ++ break; ++ gr_log_ttysniff(GR_DONT_AUDIT_GOOD, GR_TTYSNIFF_ACL_MSG, p); ++ gr_handle_alertkill(p); ++ rcu_read_unlock(); ++ put_files_struct(files); ++ read_unlock(&tasklist_lock); ++ fput(our_file); ++ return 0; ++ } ++ } ++ rcu_read_unlock(); ++ put_files_struct(files); ++ } while_each_thread(p2, p); ++ read_unlock(&tasklist_lock); ++ ++ fput(our_file); ++ return 1; ++} ++ ++static int gr_rbac_disable(void *unused) ++{ ++ pax_open_kernel(); ++ gr_status &= ~GR_READY; ++ pax_close_kernel(); ++ ++ return 0; ++} ++ ++ssize_t ++write_grsec_handler(struct file *file, const char * buf, size_t count, loff_t *ppos) ++{ ++ struct gr_arg_wrapper uwrap; ++ unsigned char *sprole_salt = NULL; ++ unsigned char *sprole_sum = NULL; ++ int error = sizeof (struct gr_arg_wrapper); ++ int error2 = 0; ++ ++ mutex_lock(&gr_dev_mutex); ++ ++ if ((gr_status & GR_READY) && !(current->acl->mode & GR_KERNELAUTH)) { ++ error = -EPERM; ++ goto out; ++ } ++ ++ if (count != sizeof (struct gr_arg_wrapper)) { ++ gr_log_int_int(GR_DONT_AUDIT_GOOD, GR_DEV_ACL_MSG, (int)count, (int)sizeof(struct gr_arg_wrapper)); ++ error = -EINVAL; ++ goto out; ++ } ++ ++ ++ if (gr_auth_expires && time_after_eq(get_seconds(), gr_auth_expires)) { ++ gr_auth_expires = 0; ++ gr_auth_attempts = 0; ++ } ++ ++ if (copy_from_user(&uwrap, buf, sizeof (struct gr_arg_wrapper))) { ++ error = -EFAULT; ++ goto out; ++ } ++ ++ if ((uwrap.version != GRSECURITY_VERSION) || (uwrap.size != sizeof(struct gr_arg))) { ++ error = -EINVAL; ++ goto out; ++ } ++ ++ if (copy_from_user(gr_usermode, uwrap.arg, sizeof (struct gr_arg))) { ++ error = -EFAULT; ++ goto out; ++ } ++ ++ if (gr_usermode->mode != GR_SPROLE && gr_usermode->mode != GR_SPROLEPAM && ++ gr_auth_attempts >= CONFIG_GRKERNSEC_ACL_MAXTRIES && ++ time_after(gr_auth_expires, get_seconds())) { ++ error = -EBUSY; ++ goto out; ++ } ++ ++ /* if non-root trying to do anything other than use a special role, ++ do not attempt authentication, do not count towards authentication ++ locking ++ */ ++ ++ if (gr_usermode->mode != GR_SPROLE && gr_usermode->mode != GR_STATUS && ++ gr_usermode->mode != GR_UNSPROLE && gr_usermode->mode != GR_SPROLEPAM && ++ current_uid()) { ++ error = -EPERM; ++ goto out; ++ } ++ ++ /* ensure pw and special role name are null terminated */ ++ ++ gr_usermode->pw[GR_PW_LEN - 1] = '\0'; ++ gr_usermode->sp_role[GR_SPROLE_LEN - 1] = '\0'; ++ ++ /* Okay. ++ * We have our enough of the argument structure..(we have yet ++ * to copy_from_user the tables themselves) . Copy the tables ++ * only if we need them, i.e. for loading operations. */ ++ ++ switch (gr_usermode->mode) { ++ case GR_STATUS: ++ if (gr_status & GR_READY) { ++ error = 1; ++ if (!gr_check_secure_terminal(current)) ++ error = 3; ++ } else ++ error = 2; ++ goto out; ++ case GR_SHUTDOWN: ++ if ((gr_status & GR_READY) ++ && !(chkpw(gr_usermode, gr_system_salt, gr_system_sum))) { ++ stop_machine(gr_rbac_disable, NULL, NULL); ++ free_variables(); ++ memset(gr_usermode, 0, sizeof (struct gr_arg)); ++ memset(gr_system_salt, 0, GR_SALT_LEN); ++ memset(gr_system_sum, 0, GR_SHA_LEN); ++ gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_SHUTS_ACL_MSG); ++ } else if (gr_status & GR_READY) { ++ gr_log_noargs(GR_DONT_AUDIT, GR_SHUTF_ACL_MSG); ++ error = -EPERM; ++ } else { ++ gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_SHUTI_ACL_MSG); ++ error = -EAGAIN; ++ } ++ break; ++ case GR_ENABLE: ++ if (!(gr_status & GR_READY) && !(error2 = gracl_init(gr_usermode))) ++ gr_log_str(GR_DONT_AUDIT_GOOD, GR_ENABLE_ACL_MSG, GR_VERSION); ++ else { ++ if (gr_status & GR_READY) ++ error = -EAGAIN; ++ else ++ error = error2; ++ gr_log_str(GR_DONT_AUDIT, GR_ENABLEF_ACL_MSG, GR_VERSION); ++ } ++ break; ++ case GR_RELOAD: ++ if (!(gr_status & GR_READY)) { ++ gr_log_str(GR_DONT_AUDIT_GOOD, GR_RELOADI_ACL_MSG, GR_VERSION); ++ error = -EAGAIN; ++ } else if (!(chkpw(gr_usermode, gr_system_salt, gr_system_sum))) { ++ stop_machine(gr_rbac_disable, NULL, NULL); ++ free_variables(); ++ error2 = gracl_init(gr_usermode); ++ if (!error2) ++ gr_log_str(GR_DONT_AUDIT_GOOD, GR_RELOAD_ACL_MSG, GR_VERSION); ++ else { ++ gr_log_str(GR_DONT_AUDIT, GR_RELOADF_ACL_MSG, GR_VERSION); ++ error = error2; ++ } ++ } else { ++ gr_log_str(GR_DONT_AUDIT, GR_RELOADF_ACL_MSG, GR_VERSION); ++ error = -EPERM; ++ } ++ break; ++ case GR_SEGVMOD: ++ if (unlikely(!(gr_status & GR_READY))) { ++ gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_SEGVMODI_ACL_MSG); ++ error = -EAGAIN; ++ break; ++ } ++ ++ if (!(chkpw(gr_usermode, gr_system_salt, gr_system_sum))) { ++ gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_SEGVMODS_ACL_MSG); ++ if (gr_usermode->segv_device && gr_usermode->segv_inode) { ++ struct acl_subject_label *segvacl; ++ segvacl = ++ lookup_acl_subj_label(gr_usermode->segv_inode, ++ gr_usermode->segv_device, ++ current->role); ++ if (segvacl) { ++ segvacl->crashes = 0; ++ segvacl->expires = 0; ++ } ++ } else if (gr_find_uid(gr_usermode->segv_uid) >= 0) { ++ gr_remove_uid(gr_usermode->segv_uid); ++ } ++ } else { ++ gr_log_noargs(GR_DONT_AUDIT, GR_SEGVMODF_ACL_MSG); ++ error = -EPERM; ++ } ++ break; ++ case GR_SPROLE: ++ case GR_SPROLEPAM: ++ if (unlikely(!(gr_status & GR_READY))) { ++ gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_SPROLEI_ACL_MSG); ++ error = -EAGAIN; ++ break; ++ } ++ ++ if (current->role->expires && time_after_eq(get_seconds(), current->role->expires)) { ++ current->role->expires = 0; ++ current->role->auth_attempts = 0; ++ } ++ ++ if (current->role->auth_attempts >= CONFIG_GRKERNSEC_ACL_MAXTRIES && ++ time_after(current->role->expires, get_seconds())) { ++ error = -EBUSY; ++ goto out; ++ } ++ ++ if (lookup_special_role_auth ++ (gr_usermode->mode, gr_usermode->sp_role, &sprole_salt, &sprole_sum) ++ && ((!sprole_salt && !sprole_sum) ++ || !(chkpw(gr_usermode, sprole_salt, sprole_sum)))) { ++ char *p = ""; ++ assign_special_role(gr_usermode->sp_role); ++ read_lock(&tasklist_lock); ++ if (current->real_parent) ++ p = current->real_parent->role->rolename; ++ read_unlock(&tasklist_lock); ++ gr_log_str_int(GR_DONT_AUDIT_GOOD, GR_SPROLES_ACL_MSG, ++ p, acl_sp_role_value); ++ } else { ++ gr_log_str(GR_DONT_AUDIT, GR_SPROLEF_ACL_MSG, gr_usermode->sp_role); ++ error = -EPERM; ++ if(!(current->role->auth_attempts++)) ++ current->role->expires = get_seconds() + CONFIG_GRKERNSEC_ACL_TIMEOUT; ++ ++ goto out; ++ } ++ break; ++ case GR_UNSPROLE: ++ if (unlikely(!(gr_status & GR_READY))) { ++ gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_UNSPROLEI_ACL_MSG); ++ error = -EAGAIN; ++ break; ++ } ++ ++ if (current->role->roletype & GR_ROLE_SPECIAL) { ++ char *p = ""; ++ int i = 0; ++ ++ read_lock(&tasklist_lock); ++ if (current->real_parent) { ++ p = current->real_parent->role->rolename; ++ i = current->real_parent->acl_role_id; ++ } ++ read_unlock(&tasklist_lock); ++ ++ gr_log_str_int(GR_DONT_AUDIT_GOOD, GR_UNSPROLES_ACL_MSG, p, i); ++ gr_set_acls(1); ++ } else { ++ error = -EPERM; ++ goto out; ++ } ++ break; ++ default: ++ gr_log_int(GR_DONT_AUDIT, GR_INVMODE_ACL_MSG, gr_usermode->mode); ++ error = -EINVAL; ++ break; ++ } ++ ++ if (error != -EPERM) ++ goto out; ++ ++ if(!(gr_auth_attempts++)) ++ gr_auth_expires = get_seconds() + CONFIG_GRKERNSEC_ACL_TIMEOUT; ++ ++ out: ++ mutex_unlock(&gr_dev_mutex); ++ return error; ++} ++ ++/* must be called with ++ rcu_read_lock(); ++ read_lock(&tasklist_lock); ++ read_lock(&grsec_exec_file_lock); ++*/ ++int gr_apply_subject_to_task(struct task_struct *task) ++{ ++ struct acl_object_label *obj; ++ char *tmpname; ++ struct acl_subject_label *tmpsubj; ++ struct file *filp; ++ struct name_entry *nmatch; ++ ++ filp = task->exec_file; ++ if (filp == NULL) ++ return 0; ++ ++ /* the following is to apply the correct subject ++ on binaries running when the RBAC system ++ is enabled, when the binaries have been ++ replaced or deleted since their execution ++ ----- ++ when the RBAC system starts, the inode/dev ++ from exec_file will be one the RBAC system ++ is unaware of. It only knows the inode/dev ++ of the present file on disk, or the absence ++ of it. ++ */ ++ preempt_disable(); ++ tmpname = gr_to_filename_rbac(filp->f_path.dentry, filp->f_path.mnt); ++ ++ nmatch = lookup_name_entry(tmpname); ++ preempt_enable(); ++ tmpsubj = NULL; ++ if (nmatch) { ++ if (nmatch->deleted) ++ tmpsubj = lookup_acl_subj_label_deleted(nmatch->inode, nmatch->device, task->role); ++ else ++ tmpsubj = lookup_acl_subj_label(nmatch->inode, nmatch->device, task->role); ++ if (tmpsubj != NULL) ++ task->acl = tmpsubj; ++ } ++ if (tmpsubj == NULL) ++ task->acl = chk_subj_label(filp->f_path.dentry, filp->f_path.mnt, ++ task->role); ++ if (task->acl) { ++ task->is_writable = 0; ++ /* ignore additional mmap checks for processes that are writable ++ by the default ACL */ ++ obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, default_role->root_label); ++ if (unlikely(obj->mode & GR_WRITE)) ++ task->is_writable = 1; ++ obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, task->role->root_label); ++ if (unlikely(obj->mode & GR_WRITE)) ++ task->is_writable = 1; ++ ++ gr_set_proc_res(task); ++ ++#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG ++ printk(KERN_ALERT "gr_set_acls for (%s:%d): role:%s, subject:%s\n", task->comm, task->pid, task->role->rolename, task->acl->filename); ++#endif ++ } else { ++ return 1; ++ } ++ ++ return 0; ++} ++ ++int ++gr_set_acls(const int type) ++{ ++ struct task_struct *task, *task2; ++ struct acl_role_label *role = current->role; ++ __u16 acl_role_id = current->acl_role_id; ++ const struct cred *cred; ++ int ret; ++ ++ rcu_read_lock(); ++ read_lock(&tasklist_lock); ++ read_lock(&grsec_exec_file_lock); ++ do_each_thread(task2, task) { ++ /* check to see if we're called from the exit handler, ++ if so, only replace ACLs that have inherited the admin ++ ACL */ ++ ++ if (type && (task->role != role || ++ task->acl_role_id != acl_role_id)) ++ continue; ++ ++ task->acl_role_id = 0; ++ task->acl_sp_role = 0; ++ ++ if (task->exec_file) { ++ cred = __task_cred(task); ++ task->role = lookup_acl_role_label(task, cred->uid, cred->gid); ++ ret = gr_apply_subject_to_task(task); ++ if (ret) { ++ read_unlock(&grsec_exec_file_lock); ++ read_unlock(&tasklist_lock); ++ rcu_read_unlock(); ++ gr_log_str_int(GR_DONT_AUDIT_GOOD, GR_DEFACL_MSG, task->comm, task->pid); ++ return ret; ++ } ++ } else { ++ // it's a kernel process ++ task->role = kernel_role; ++ task->acl = kernel_role->root_label; ++#ifdef CONFIG_GRKERNSEC_ACL_HIDEKERN ++ task->acl->mode &= ~GR_PROCFIND; ++#endif ++ } ++ } while_each_thread(task2, task); ++ read_unlock(&grsec_exec_file_lock); ++ read_unlock(&tasklist_lock); ++ rcu_read_unlock(); ++ ++ return 0; ++} ++ ++void ++gr_learn_resource(const struct task_struct *task, ++ const int res, const unsigned long wanted, const int gt) ++{ ++ struct acl_subject_label *acl; ++ const struct cred *cred; ++ ++ if (unlikely((gr_status & GR_READY) && ++ task->acl && (task->acl->mode & (GR_LEARN | GR_INHERITLEARN)))) ++ goto skip_reslog; ++ ++#ifdef CONFIG_GRKERNSEC_RESLOG ++ gr_log_resource(task, res, wanted, gt); ++#endif ++ skip_reslog: ++ ++ if (unlikely(!(gr_status & GR_READY) || !wanted || res >= GR_NLIMITS)) ++ return; ++ ++ acl = task->acl; ++ ++ if (likely(!acl || !(acl->mode & (GR_LEARN | GR_INHERITLEARN)) || ++ !(acl->resmask & (1 << (unsigned short) res)))) ++ return; ++ ++ if (wanted >= acl->res[res].rlim_cur) { ++ unsigned long res_add; ++ ++ res_add = wanted; ++ switch (res) { ++ case RLIMIT_CPU: ++ res_add += GR_RLIM_CPU_BUMP; ++ break; ++ case RLIMIT_FSIZE: ++ res_add += GR_RLIM_FSIZE_BUMP; ++ break; ++ case RLIMIT_DATA: ++ res_add += GR_RLIM_DATA_BUMP; ++ break; ++ case RLIMIT_STACK: ++ res_add += GR_RLIM_STACK_BUMP; ++ break; ++ case RLIMIT_CORE: ++ res_add += GR_RLIM_CORE_BUMP; ++ break; ++ case RLIMIT_RSS: ++ res_add += GR_RLIM_RSS_BUMP; ++ break; ++ case RLIMIT_NPROC: ++ res_add += GR_RLIM_NPROC_BUMP; ++ break; ++ case RLIMIT_NOFILE: ++ res_add += GR_RLIM_NOFILE_BUMP; ++ break; ++ case RLIMIT_MEMLOCK: ++ res_add += GR_RLIM_MEMLOCK_BUMP; ++ break; ++ case RLIMIT_AS: ++ res_add += GR_RLIM_AS_BUMP; ++ break; ++ case RLIMIT_LOCKS: ++ res_add += GR_RLIM_LOCKS_BUMP; ++ break; ++ case RLIMIT_SIGPENDING: ++ res_add += GR_RLIM_SIGPENDING_BUMP; ++ break; ++ case RLIMIT_MSGQUEUE: ++ res_add += GR_RLIM_MSGQUEUE_BUMP; ++ break; ++ case RLIMIT_NICE: ++ res_add += GR_RLIM_NICE_BUMP; ++ break; ++ case RLIMIT_RTPRIO: ++ res_add += GR_RLIM_RTPRIO_BUMP; ++ break; ++ case RLIMIT_RTTIME: ++ res_add += GR_RLIM_RTTIME_BUMP; ++ break; ++ } ++ ++ acl->res[res].rlim_cur = res_add; ++ ++ if (wanted > acl->res[res].rlim_max) ++ acl->res[res].rlim_max = res_add; ++ ++ /* only log the subject filename, since resource logging is supported for ++ single-subject learning only */ ++ rcu_read_lock(); ++ cred = __task_cred(task); ++ security_learn(GR_LEARN_AUDIT_MSG, task->role->rolename, ++ task->role->roletype, cred->uid, cred->gid, acl->filename, ++ acl->filename, acl->res[res].rlim_cur, acl->res[res].rlim_max, ++ "", (unsigned long) res, &task->signal->saved_ip); ++ rcu_read_unlock(); ++ } ++ ++ return; ++} ++ ++#if defined(CONFIG_PAX_HAVE_ACL_FLAGS) && (defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)) ++void ++pax_set_initial_flags(struct linux_binprm *bprm) ++{ ++ struct task_struct *task = current; ++ struct acl_subject_label *proc; ++ unsigned long flags; ++ ++ if (unlikely(!(gr_status & GR_READY))) ++ return; ++ ++ flags = pax_get_flags(task); ++ ++ proc = task->acl; ++ ++ if (proc->pax_flags & GR_PAX_DISABLE_PAGEEXEC) ++ flags &= ~MF_PAX_PAGEEXEC; ++ if (proc->pax_flags & GR_PAX_DISABLE_SEGMEXEC) ++ flags &= ~MF_PAX_SEGMEXEC; ++ if (proc->pax_flags & GR_PAX_DISABLE_RANDMMAP) ++ flags &= ~MF_PAX_RANDMMAP; ++ if (proc->pax_flags & GR_PAX_DISABLE_EMUTRAMP) ++ flags &= ~MF_PAX_EMUTRAMP; ++ if (proc->pax_flags & GR_PAX_DISABLE_MPROTECT) ++ flags &= ~MF_PAX_MPROTECT; ++ ++ if (proc->pax_flags & GR_PAX_ENABLE_PAGEEXEC) ++ flags |= MF_PAX_PAGEEXEC; ++ if (proc->pax_flags & GR_PAX_ENABLE_SEGMEXEC) ++ flags |= MF_PAX_SEGMEXEC; ++ if (proc->pax_flags & GR_PAX_ENABLE_RANDMMAP) ++ flags |= MF_PAX_RANDMMAP; ++ if (proc->pax_flags & GR_PAX_ENABLE_EMUTRAMP) ++ flags |= MF_PAX_EMUTRAMP; ++ if (proc->pax_flags & GR_PAX_ENABLE_MPROTECT) ++ flags |= MF_PAX_MPROTECT; ++ ++ pax_set_flags(task, flags); ++ ++ return; ++} ++#endif ++ ++int ++gr_handle_proc_ptrace(struct task_struct *task) ++{ ++ struct file *filp; ++ struct task_struct *tmp = task; ++ struct task_struct *curtemp = current; ++ __u32 retmode; ++ ++#ifndef CONFIG_GRKERNSEC_HARDEN_PTRACE ++ if (unlikely(!(gr_status & GR_READY))) ++ return 0; ++#endif ++ ++ read_lock(&tasklist_lock); ++ read_lock(&grsec_exec_file_lock); ++ filp = task->exec_file; ++ ++ while (tmp->pid > 0) { ++ if (tmp == curtemp) ++ break; ++ tmp = tmp->real_parent; ++ } ++ ++ if (!filp || (tmp->pid == 0 && ((grsec_enable_harden_ptrace && current_uid() && !(gr_status & GR_READY)) || ++ ((gr_status & GR_READY) && !(current->acl->mode & GR_RELAXPTRACE))))) { ++ read_unlock(&grsec_exec_file_lock); ++ read_unlock(&tasklist_lock); ++ return 1; ++ } ++ ++#ifdef CONFIG_GRKERNSEC_HARDEN_PTRACE ++ if (!(gr_status & GR_READY)) { ++ read_unlock(&grsec_exec_file_lock); ++ read_unlock(&tasklist_lock); ++ return 0; ++ } ++#endif ++ ++ retmode = gr_search_file(filp->f_path.dentry, GR_NOPTRACE, filp->f_path.mnt); ++ read_unlock(&grsec_exec_file_lock); ++ read_unlock(&tasklist_lock); ++ ++ if (retmode & GR_NOPTRACE) ++ return 1; ++ ++ if (!(current->acl->mode & GR_POVERRIDE) && !(current->role->roletype & GR_ROLE_GOD) ++ && (current->acl != task->acl || (current->acl != current->role->root_label ++ && current->pid != task->pid))) ++ return 1; ++ ++ return 0; ++} ++ ++void task_grsec_rbac(struct seq_file *m, struct task_struct *p) ++{ ++ if (unlikely(!(gr_status & GR_READY))) ++ return; ++ ++ if (!(current->role->roletype & GR_ROLE_GOD)) ++ return; ++ ++ seq_printf(m, "RBAC:\t%.64s:%c:%.950s\n", ++ p->role->rolename, gr_task_roletype_to_char(p), ++ p->acl->filename); ++} ++ ++int ++gr_handle_ptrace(struct task_struct *task, const long request) ++{ ++ struct task_struct *tmp = task; ++ struct task_struct *curtemp = current; ++ __u32 retmode; ++ ++#ifndef CONFIG_GRKERNSEC_HARDEN_PTRACE ++ if (unlikely(!(gr_status & GR_READY))) ++ return 0; ++#endif ++ if (request == PTRACE_ATTACH || request == PTRACE_SEIZE) { ++ read_lock(&tasklist_lock); ++ while (tmp->pid > 0) { ++ if (tmp == curtemp) ++ break; ++ tmp = tmp->real_parent; ++ } ++ ++ if (tmp->pid == 0 && ((grsec_enable_harden_ptrace && current_uid() && !(gr_status & GR_READY)) || ++ ((gr_status & GR_READY) && !(current->acl->mode & GR_RELAXPTRACE)))) { ++ read_unlock(&tasklist_lock); ++ gr_log_ptrace(GR_DONT_AUDIT, GR_PTRACE_ACL_MSG, task); ++ return 1; ++ } ++ read_unlock(&tasklist_lock); ++ } ++ ++#ifdef CONFIG_GRKERNSEC_HARDEN_PTRACE ++ if (!(gr_status & GR_READY)) ++ return 0; ++#endif ++ ++ read_lock(&grsec_exec_file_lock); ++ if (unlikely(!task->exec_file)) { ++ read_unlock(&grsec_exec_file_lock); ++ return 0; ++ } ++ ++ retmode = gr_search_file(task->exec_file->f_path.dentry, GR_PTRACERD | GR_NOPTRACE, task->exec_file->f_path.mnt); ++ read_unlock(&grsec_exec_file_lock); ++ ++ if (retmode & GR_NOPTRACE) { ++ gr_log_ptrace(GR_DONT_AUDIT, GR_PTRACE_ACL_MSG, task); ++ return 1; ++ } ++ ++ if (retmode & GR_PTRACERD) { ++ switch (request) { ++ case PTRACE_SEIZE: ++ case PTRACE_POKETEXT: ++ case PTRACE_POKEDATA: ++ case PTRACE_POKEUSR: ++#if !defined(CONFIG_PPC32) && !defined(CONFIG_PPC64) && !defined(CONFIG_PARISC) && !defined(CONFIG_ALPHA) && !defined(CONFIG_IA64) ++ case PTRACE_SETREGS: ++ case PTRACE_SETFPREGS: ++#endif ++#ifdef CONFIG_X86 ++ case PTRACE_SETFPXREGS: ++#endif ++#ifdef CONFIG_ALTIVEC ++ case PTRACE_SETVRREGS: ++#endif ++ return 1; ++ default: ++ return 0; ++ } ++ } else if (!(current->acl->mode & GR_POVERRIDE) && ++ !(current->role->roletype & GR_ROLE_GOD) && ++ (current->acl != task->acl)) { ++ gr_log_ptrace(GR_DONT_AUDIT, GR_PTRACE_ACL_MSG, task); ++ return 1; ++ } ++ ++ return 0; ++} ++ ++static int is_writable_mmap(const struct file *filp) ++{ ++ struct task_struct *task = current; ++ struct acl_object_label *obj, *obj2; ++ ++ if (gr_status & GR_READY && !(task->acl->mode & GR_OVERRIDE) && ++ !task->is_writable && S_ISREG(filp->f_path.dentry->d_inode->i_mode) && (filp->f_path.mnt != shm_mnt || (filp->f_path.dentry->d_inode->i_nlink > 0))) { ++ obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, default_role->root_label); ++ obj2 = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, ++ task->role->root_label); ++ if (unlikely((obj->mode & GR_WRITE) || (obj2->mode & GR_WRITE))) { ++ gr_log_fs_generic(GR_DONT_AUDIT, GR_WRITLIB_ACL_MSG, filp->f_path.dentry, filp->f_path.mnt); ++ return 1; ++ } ++ } ++ return 0; ++} ++ ++int ++gr_acl_handle_mmap(const struct file *file, const unsigned long prot) ++{ ++ __u32 mode; ++ ++ if (unlikely(!file || !(prot & PROT_EXEC))) ++ return 1; ++ ++ if (is_writable_mmap(file)) ++ return 0; ++ ++ mode = ++ gr_search_file(file->f_path.dentry, ++ GR_EXEC | GR_AUDIT_EXEC | GR_SUPPRESS, ++ file->f_path.mnt); ++ ++ if (!gr_tpe_allow(file)) ++ return 0; ++ ++ if (unlikely(!(mode & GR_EXEC) && !(mode & GR_SUPPRESS))) { ++ gr_log_fs_rbac_generic(GR_DONT_AUDIT, GR_MMAP_ACL_MSG, file->f_path.dentry, file->f_path.mnt); ++ return 0; ++ } else if (unlikely(!(mode & GR_EXEC))) { ++ return 0; ++ } else if (unlikely(mode & GR_EXEC && mode & GR_AUDIT_EXEC)) { ++ gr_log_fs_rbac_generic(GR_DO_AUDIT, GR_MMAP_ACL_MSG, file->f_path.dentry, file->f_path.mnt); ++ return 1; ++ } ++ ++ return 1; ++} ++ ++int ++gr_acl_handle_mprotect(const struct file *file, const unsigned long prot) ++{ ++ __u32 mode; ++ ++ if (unlikely(!file || !(prot & PROT_EXEC))) ++ return 1; ++ ++ if (is_writable_mmap(file)) ++ return 0; ++ ++ mode = ++ gr_search_file(file->f_path.dentry, ++ GR_EXEC | GR_AUDIT_EXEC | GR_SUPPRESS, ++ file->f_path.mnt); ++ ++ if (!gr_tpe_allow(file)) ++ return 0; ++ ++ if (unlikely(!(mode & GR_EXEC) && !(mode & GR_SUPPRESS))) { ++ gr_log_fs_rbac_generic(GR_DONT_AUDIT, GR_MPROTECT_ACL_MSG, file->f_path.dentry, file->f_path.mnt); ++ return 0; ++ } else if (unlikely(!(mode & GR_EXEC))) { ++ return 0; ++ } else if (unlikely(mode & GR_EXEC && mode & GR_AUDIT_EXEC)) { ++ gr_log_fs_rbac_generic(GR_DO_AUDIT, GR_MPROTECT_ACL_MSG, file->f_path.dentry, file->f_path.mnt); ++ return 1; ++ } ++ ++ return 1; ++} ++ ++void ++gr_acl_handle_psacct(struct task_struct *task, const long code) ++{ ++ unsigned long runtime; ++ unsigned long cputime; ++ unsigned int wday, cday; ++ __u8 whr, chr; ++ __u8 wmin, cmin; ++ __u8 wsec, csec; ++ struct timespec timeval; ++ ++ if (unlikely(!(gr_status & GR_READY) || !task->acl || ++ !(task->acl->mode & GR_PROCACCT))) ++ return; ++ ++ do_posix_clock_monotonic_gettime(&timeval); ++ runtime = timeval.tv_sec - task->start_time.tv_sec; ++ wday = runtime / (3600 * 24); ++ runtime -= wday * (3600 * 24); ++ whr = runtime / 3600; ++ runtime -= whr * 3600; ++ wmin = runtime / 60; ++ runtime -= wmin * 60; ++ wsec = runtime; ++ ++ cputime = (task->utime + task->stime) / HZ; ++ cday = cputime / (3600 * 24); ++ cputime -= cday * (3600 * 24); ++ chr = cputime / 3600; ++ cputime -= chr * 3600; ++ cmin = cputime / 60; ++ cputime -= cmin * 60; ++ csec = cputime; ++ ++ gr_log_procacct(GR_DO_AUDIT, GR_ACL_PROCACCT_MSG, task, wday, whr, wmin, wsec, cday, chr, cmin, csec, code); ++ ++ return; ++} ++ ++void gr_set_kernel_label(struct task_struct *task) ++{ ++ if (gr_status & GR_READY) { ++ task->role = kernel_role; ++ task->acl = kernel_role->root_label; ++ } ++ return; ++} ++ ++#ifdef CONFIG_TASKSTATS ++int gr_is_taskstats_denied(int pid) ++{ ++ struct task_struct *task; ++#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++ const struct cred *cred; ++#endif ++ int ret = 0; ++ ++ /* restrict taskstats viewing to un-chrooted root users ++ who have the 'view' subject flag if the RBAC system is enabled ++ */ ++ ++ rcu_read_lock(); ++ read_lock(&tasklist_lock); ++ task = find_task_by_vpid(pid); ++ if (task) { ++#ifdef CONFIG_GRKERNSEC_CHROOT ++ if (proc_is_chrooted(task)) ++ ret = -EACCES; ++#endif ++#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++ cred = __task_cred(task); ++#ifdef CONFIG_GRKERNSEC_PROC_USER ++ if (cred->uid != 0) ++ ret = -EACCES; ++#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++ if (cred->uid != 0 && !groups_search(cred->group_info, CONFIG_GRKERNSEC_PROC_GID)) ++ ret = -EACCES; ++#endif ++#endif ++ if (gr_status & GR_READY) { ++ if (!(task->acl->mode & GR_VIEW)) ++ ret = -EACCES; ++ } ++ } else ++ ret = -ENOENT; ++ ++ read_unlock(&tasklist_lock); ++ rcu_read_unlock(); ++ ++ return ret; ++} ++#endif ++ ++/* AUXV entries are filled via a descendant of search_binary_handler ++ after we've already applied the subject for the target ++*/ ++int gr_acl_enable_at_secure(void) ++{ ++ if (unlikely(!(gr_status & GR_READY))) ++ return 0; ++ ++ if (current->acl->mode & GR_ATSECURE) ++ return 1; ++ ++ return 0; ++} ++ ++int gr_acl_handle_filldir(const struct file *file, const char *name, const unsigned int namelen, const ino_t ino) ++{ ++ struct task_struct *task = current; ++ struct dentry *dentry = file->f_path.dentry; ++ struct vfsmount *mnt = file->f_path.mnt; ++ struct acl_object_label *obj, *tmp; ++ struct acl_subject_label *subj; ++ unsigned int bufsize; ++ int is_not_root; ++ char *path; ++ dev_t dev = __get_dev(dentry); ++ ++ if (unlikely(!(gr_status & GR_READY))) ++ return 1; ++ ++ if (task->acl->mode & (GR_LEARN | GR_INHERITLEARN)) ++ return 1; ++ ++ /* ignore Eric Biederman */ ++ if (IS_PRIVATE(dentry->d_inode)) ++ return 1; ++ ++ subj = task->acl; ++ read_lock(&gr_inode_lock); ++ do { ++ obj = lookup_acl_obj_label(ino, dev, subj); ++ if (obj != NULL) { ++ read_unlock(&gr_inode_lock); ++ return (obj->mode & GR_FIND) ? 1 : 0; ++ } ++ } while ((subj = subj->parent_subject)); ++ read_unlock(&gr_inode_lock); ++ ++ /* this is purely an optimization since we're looking for an object ++ for the directory we're doing a readdir on ++ if it's possible for any globbed object to match the entry we're ++ filling into the directory, then the object we find here will be ++ an anchor point with attached globbed objects ++ */ ++ obj = chk_obj_label_noglob(dentry, mnt, task->acl); ++ if (obj->globbed == NULL) ++ return (obj->mode & GR_FIND) ? 1 : 0; ++ ++ is_not_root = ((obj->filename[0] == '/') && ++ (obj->filename[1] == '\0')) ? 0 : 1; ++ bufsize = PAGE_SIZE - namelen - is_not_root; ++ ++ /* check bufsize > PAGE_SIZE || bufsize == 0 */ ++ if (unlikely((bufsize - 1) > (PAGE_SIZE - 1))) ++ return 1; ++ ++ preempt_disable(); ++ path = d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[0], smp_processor_id()), ++ bufsize); ++ ++ bufsize = strlen(path); ++ ++ /* if base is "/", don't append an additional slash */ ++ if (is_not_root) ++ *(path + bufsize) = '/'; ++ memcpy(path + bufsize + is_not_root, name, namelen); ++ *(path + bufsize + namelen + is_not_root) = '\0'; ++ ++ tmp = obj->globbed; ++ while (tmp) { ++ if (!glob_match(tmp->filename, path)) { ++ preempt_enable(); ++ return (tmp->mode & GR_FIND) ? 1 : 0; ++ } ++ tmp = tmp->next; ++ } ++ preempt_enable(); ++ return (obj->mode & GR_FIND) ? 1 : 0; ++} ++ ++#ifdef CONFIG_NETFILTER_XT_MATCH_GRADM_MODULE ++EXPORT_SYMBOL(gr_acl_is_enabled); ++#endif ++EXPORT_SYMBOL(gr_learn_resource); ++EXPORT_SYMBOL(gr_set_kernel_label); ++#ifdef CONFIG_SECURITY ++EXPORT_SYMBOL(gr_check_user_change); ++EXPORT_SYMBOL(gr_check_group_change); ++#endif ++ +diff --git a/grsecurity/gracl_alloc.c b/grsecurity/gracl_alloc.c +new file mode 100644 +index 0000000..34fefda +--- /dev/null ++++ b/grsecurity/gracl_alloc.c +@@ -0,0 +1,105 @@ ++#include <linux/kernel.h> ++#include <linux/mm.h> ++#include <linux/slab.h> ++#include <linux/vmalloc.h> ++#include <linux/gracl.h> ++#include <linux/grsecurity.h> ++ ++static unsigned long alloc_stack_next = 1; ++static unsigned long alloc_stack_size = 1; ++static void **alloc_stack; ++ ++static __inline__ int ++alloc_pop(void) ++{ ++ if (alloc_stack_next == 1) ++ return 0; ++ ++ kfree(alloc_stack[alloc_stack_next - 2]); ++ ++ alloc_stack_next--; ++ ++ return 1; ++} ++ ++static __inline__ int ++alloc_push(void *buf) ++{ ++ if (alloc_stack_next >= alloc_stack_size) ++ return 1; ++ ++ alloc_stack[alloc_stack_next - 1] = buf; ++ ++ alloc_stack_next++; ++ ++ return 0; ++} ++ ++void * ++acl_alloc(unsigned long len) ++{ ++ void *ret = NULL; ++ ++ if (!len || len > PAGE_SIZE) ++ goto out; ++ ++ ret = kmalloc(len, GFP_KERNEL); ++ ++ if (ret) { ++ if (alloc_push(ret)) { ++ kfree(ret); ++ ret = NULL; ++ } ++ } ++ ++out: ++ return ret; ++} ++ ++void * ++acl_alloc_num(unsigned long num, unsigned long len) ++{ ++ if (!len || (num > (PAGE_SIZE / len))) ++ return NULL; ++ ++ return acl_alloc(num * len); ++} ++ ++void ++acl_free_all(void) ++{ ++ if (gr_acl_is_enabled() || !alloc_stack) ++ return; ++ ++ while (alloc_pop()) ; ++ ++ if (alloc_stack) { ++ if ((alloc_stack_size * sizeof (void *)) <= PAGE_SIZE) ++ kfree(alloc_stack); ++ else ++ vfree(alloc_stack); ++ } ++ ++ alloc_stack = NULL; ++ alloc_stack_size = 1; ++ alloc_stack_next = 1; ++ ++ return; ++} ++ ++int ++acl_alloc_stack_init(unsigned long size) ++{ ++ if ((size * sizeof (void *)) <= PAGE_SIZE) ++ alloc_stack = ++ (void **) kmalloc(size * sizeof (void *), GFP_KERNEL); ++ else ++ alloc_stack = (void **) vmalloc(size * sizeof (void *)); ++ ++ alloc_stack_size = size; ++ ++ if (!alloc_stack) ++ return 0; ++ else ++ return 1; ++} +diff --git a/grsecurity/gracl_cap.c b/grsecurity/gracl_cap.c +new file mode 100644 +index 0000000..6d21049 +--- /dev/null ++++ b/grsecurity/gracl_cap.c +@@ -0,0 +1,110 @@ ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/sched.h> ++#include <linux/gracl.h> ++#include <linux/grsecurity.h> ++#include <linux/grinternal.h> ++ ++extern const char *captab_log[]; ++extern int captab_log_entries; ++ ++int gr_task_acl_is_capable(const struct task_struct *task, const struct cred *cred, const int cap) ++{ ++ struct acl_subject_label *curracl; ++ kernel_cap_t cap_drop = __cap_empty_set, cap_mask = __cap_empty_set; ++ kernel_cap_t cap_audit = __cap_empty_set; ++ ++ if (!gr_acl_is_enabled()) ++ return 1; ++ ++ curracl = task->acl; ++ ++ cap_drop = curracl->cap_lower; ++ cap_mask = curracl->cap_mask; ++ cap_audit = curracl->cap_invert_audit; ++ ++ while ((curracl = curracl->parent_subject)) { ++ /* if the cap isn't specified in the current computed mask but is specified in the ++ current level subject, and is lowered in the current level subject, then add ++ it to the set of dropped capabilities ++ otherwise, add the current level subject's mask to the current computed mask ++ */ ++ if (!cap_raised(cap_mask, cap) && cap_raised(curracl->cap_mask, cap)) { ++ cap_raise(cap_mask, cap); ++ if (cap_raised(curracl->cap_lower, cap)) ++ cap_raise(cap_drop, cap); ++ if (cap_raised(curracl->cap_invert_audit, cap)) ++ cap_raise(cap_audit, cap); ++ } ++ } ++ ++ if (!cap_raised(cap_drop, cap)) { ++ if (cap_raised(cap_audit, cap)) ++ gr_log_cap(GR_DO_AUDIT, GR_CAP_ACL_MSG2, task, captab_log[cap]); ++ return 1; ++ } ++ ++ curracl = task->acl; ++ ++ if ((curracl->mode & (GR_LEARN | GR_INHERITLEARN)) ++ && cap_raised(cred->cap_effective, cap)) { ++ security_learn(GR_LEARN_AUDIT_MSG, task->role->rolename, ++ task->role->roletype, cred->uid, ++ cred->gid, task->exec_file ? ++ gr_to_filename(task->exec_file->f_path.dentry, ++ task->exec_file->f_path.mnt) : curracl->filename, ++ curracl->filename, 0UL, ++ 0UL, "", (unsigned long) cap, &task->signal->saved_ip); ++ return 1; ++ } ++ ++ if ((cap >= 0) && (cap < captab_log_entries) && cap_raised(cred->cap_effective, cap) && !cap_raised(cap_audit, cap)) ++ gr_log_cap(GR_DONT_AUDIT, GR_CAP_ACL_MSG, task, captab_log[cap]); ++ ++ return 0; ++} ++ ++int ++gr_acl_is_capable(const int cap) ++{ ++ return gr_task_acl_is_capable(current, current_cred(), cap); ++} ++ ++int gr_task_acl_is_capable_nolog(const struct task_struct *task, const int cap) ++{ ++ struct acl_subject_label *curracl; ++ kernel_cap_t cap_drop = __cap_empty_set, cap_mask = __cap_empty_set; ++ ++ if (!gr_acl_is_enabled()) ++ return 1; ++ ++ curracl = task->acl; ++ ++ cap_drop = curracl->cap_lower; ++ cap_mask = curracl->cap_mask; ++ ++ while ((curracl = curracl->parent_subject)) { ++ /* if the cap isn't specified in the current computed mask but is specified in the ++ current level subject, and is lowered in the current level subject, then add ++ it to the set of dropped capabilities ++ otherwise, add the current level subject's mask to the current computed mask ++ */ ++ if (!cap_raised(cap_mask, cap) && cap_raised(curracl->cap_mask, cap)) { ++ cap_raise(cap_mask, cap); ++ if (cap_raised(curracl->cap_lower, cap)) ++ cap_raise(cap_drop, cap); ++ } ++ } ++ ++ if (!cap_raised(cap_drop, cap)) ++ return 1; ++ ++ return 0; ++} ++ ++int ++gr_acl_is_capable_nolog(const int cap) ++{ ++ return gr_task_acl_is_capable_nolog(current, cap); ++} ++ +diff --git a/grsecurity/gracl_fs.c b/grsecurity/gracl_fs.c +new file mode 100644 +index 0000000..88d0e87 +--- /dev/null ++++ b/grsecurity/gracl_fs.c +@@ -0,0 +1,435 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/types.h> ++#include <linux/fs.h> ++#include <linux/file.h> ++#include <linux/stat.h> ++#include <linux/grsecurity.h> ++#include <linux/grinternal.h> ++#include <linux/gracl.h> ++ ++umode_t ++gr_acl_umask(void) ++{ ++ if (unlikely(!gr_acl_is_enabled())) ++ return 0; ++ ++ return current->role->umask; ++} ++ ++__u32 ++gr_acl_handle_hidden_file(const struct dentry * dentry, ++ const struct vfsmount * mnt) ++{ ++ __u32 mode; ++ ++ if (unlikely(!dentry->d_inode)) ++ return GR_FIND; ++ ++ mode = ++ gr_search_file(dentry, GR_FIND | GR_AUDIT_FIND | GR_SUPPRESS, mnt); ++ ++ if (unlikely(mode & GR_FIND && mode & GR_AUDIT_FIND)) { ++ gr_log_fs_rbac_generic(GR_DO_AUDIT, GR_HIDDEN_ACL_MSG, dentry, mnt); ++ return mode; ++ } else if (unlikely(!(mode & GR_FIND) && !(mode & GR_SUPPRESS))) { ++ gr_log_fs_rbac_generic(GR_DONT_AUDIT, GR_HIDDEN_ACL_MSG, dentry, mnt); ++ return 0; ++ } else if (unlikely(!(mode & GR_FIND))) ++ return 0; ++ ++ return GR_FIND; ++} ++ ++__u32 ++gr_acl_handle_open(const struct dentry * dentry, const struct vfsmount * mnt, ++ int acc_mode) ++{ ++ __u32 reqmode = GR_FIND; ++ __u32 mode; ++ ++ if (unlikely(!dentry->d_inode)) ++ return reqmode; ++ ++ if (acc_mode & MAY_APPEND) ++ reqmode |= GR_APPEND; ++ else if (acc_mode & MAY_WRITE) ++ reqmode |= GR_WRITE; ++ if ((acc_mode & MAY_READ) && !S_ISDIR(dentry->d_inode->i_mode)) ++ reqmode |= GR_READ; ++ ++ mode = ++ gr_search_file(dentry, reqmode | to_gr_audit(reqmode) | GR_SUPPRESS, ++ mnt); ++ ++ if (unlikely(((mode & reqmode) == reqmode) && mode & GR_AUDITS)) { ++ gr_log_fs_rbac_mode2(GR_DO_AUDIT, GR_OPEN_ACL_MSG, dentry, mnt, ++ reqmode & GR_READ ? " reading" : "", ++ reqmode & GR_WRITE ? " writing" : reqmode & ++ GR_APPEND ? " appending" : ""); ++ return reqmode; ++ } else ++ if (unlikely((mode & reqmode) != reqmode && !(mode & GR_SUPPRESS))) ++ { ++ gr_log_fs_rbac_mode2(GR_DONT_AUDIT, GR_OPEN_ACL_MSG, dentry, mnt, ++ reqmode & GR_READ ? " reading" : "", ++ reqmode & GR_WRITE ? " writing" : reqmode & ++ GR_APPEND ? " appending" : ""); ++ return 0; ++ } else if (unlikely((mode & reqmode) != reqmode)) ++ return 0; ++ ++ return reqmode; ++} ++ ++__u32 ++gr_acl_handle_creat(const struct dentry * dentry, ++ const struct dentry * p_dentry, ++ const struct vfsmount * p_mnt, int open_flags, int acc_mode, ++ const int imode) ++{ ++ __u32 reqmode = GR_WRITE | GR_CREATE; ++ __u32 mode; ++ ++ if (acc_mode & MAY_APPEND) ++ reqmode |= GR_APPEND; ++ // if a directory was required or the directory already exists, then ++ // don't count this open as a read ++ if ((acc_mode & MAY_READ) && ++ !((open_flags & O_DIRECTORY) || (dentry->d_inode && S_ISDIR(dentry->d_inode->i_mode)))) ++ reqmode |= GR_READ; ++ if ((open_flags & O_CREAT) && (imode & (S_ISUID | S_ISGID))) ++ reqmode |= GR_SETID; ++ ++ mode = ++ gr_check_create(dentry, p_dentry, p_mnt, ++ reqmode | to_gr_audit(reqmode) | GR_SUPPRESS); ++ ++ if (unlikely(((mode & reqmode) == reqmode) && mode & GR_AUDITS)) { ++ gr_log_fs_rbac_mode2(GR_DO_AUDIT, GR_CREATE_ACL_MSG, dentry, p_mnt, ++ reqmode & GR_READ ? " reading" : "", ++ reqmode & GR_WRITE ? " writing" : reqmode & ++ GR_APPEND ? " appending" : ""); ++ return reqmode; ++ } else ++ if (unlikely((mode & reqmode) != reqmode && !(mode & GR_SUPPRESS))) ++ { ++ gr_log_fs_rbac_mode2(GR_DONT_AUDIT, GR_CREATE_ACL_MSG, dentry, p_mnt, ++ reqmode & GR_READ ? " reading" : "", ++ reqmode & GR_WRITE ? " writing" : reqmode & ++ GR_APPEND ? " appending" : ""); ++ return 0; ++ } else if (unlikely((mode & reqmode) != reqmode)) ++ return 0; ++ ++ return reqmode; ++} ++ ++__u32 ++gr_acl_handle_access(const struct dentry * dentry, const struct vfsmount * mnt, ++ const int fmode) ++{ ++ __u32 mode, reqmode = GR_FIND; ++ ++ if ((fmode & S_IXOTH) && !S_ISDIR(dentry->d_inode->i_mode)) ++ reqmode |= GR_EXEC; ++ if (fmode & S_IWOTH) ++ reqmode |= GR_WRITE; ++ if (fmode & S_IROTH) ++ reqmode |= GR_READ; ++ ++ mode = ++ gr_search_file(dentry, reqmode | to_gr_audit(reqmode) | GR_SUPPRESS, ++ mnt); ++ ++ if (unlikely(((mode & reqmode) == reqmode) && mode & GR_AUDITS)) { ++ gr_log_fs_rbac_mode3(GR_DO_AUDIT, GR_ACCESS_ACL_MSG, dentry, mnt, ++ reqmode & GR_READ ? " reading" : "", ++ reqmode & GR_WRITE ? " writing" : "", ++ reqmode & GR_EXEC ? " executing" : ""); ++ return reqmode; ++ } else ++ if (unlikely((mode & reqmode) != reqmode && !(mode & GR_SUPPRESS))) ++ { ++ gr_log_fs_rbac_mode3(GR_DONT_AUDIT, GR_ACCESS_ACL_MSG, dentry, mnt, ++ reqmode & GR_READ ? " reading" : "", ++ reqmode & GR_WRITE ? " writing" : "", ++ reqmode & GR_EXEC ? " executing" : ""); ++ return 0; ++ } else if (unlikely((mode & reqmode) != reqmode)) ++ return 0; ++ ++ return reqmode; ++} ++ ++static __u32 generic_fs_handler(const struct dentry *dentry, const struct vfsmount *mnt, __u32 reqmode, const char *fmt) ++{ ++ __u32 mode; ++ ++ mode = gr_search_file(dentry, reqmode | to_gr_audit(reqmode) | GR_SUPPRESS, mnt); ++ ++ if (unlikely(((mode & (reqmode)) == (reqmode)) && mode & GR_AUDITS)) { ++ gr_log_fs_rbac_generic(GR_DO_AUDIT, fmt, dentry, mnt); ++ return mode; ++ } else if (unlikely((mode & (reqmode)) != (reqmode) && !(mode & GR_SUPPRESS))) { ++ gr_log_fs_rbac_generic(GR_DONT_AUDIT, fmt, dentry, mnt); ++ return 0; ++ } else if (unlikely((mode & (reqmode)) != (reqmode))) ++ return 0; ++ ++ return (reqmode); ++} ++ ++__u32 ++gr_acl_handle_rmdir(const struct dentry * dentry, const struct vfsmount * mnt) ++{ ++ return generic_fs_handler(dentry, mnt, GR_WRITE | GR_DELETE , GR_RMDIR_ACL_MSG); ++} ++ ++__u32 ++gr_acl_handle_unlink(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++ return generic_fs_handler(dentry, mnt, GR_WRITE | GR_DELETE , GR_UNLINK_ACL_MSG); ++} ++ ++__u32 ++gr_acl_handle_truncate(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++ return generic_fs_handler(dentry, mnt, GR_WRITE, GR_TRUNCATE_ACL_MSG); ++} ++ ++__u32 ++gr_acl_handle_utime(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++ return generic_fs_handler(dentry, mnt, GR_WRITE, GR_ATIME_ACL_MSG); ++} ++ ++__u32 ++gr_acl_handle_chmod(const struct dentry *dentry, const struct vfsmount *mnt, ++ umode_t *modeptr) ++{ ++ umode_t mode; ++ ++ *modeptr &= ~gr_acl_umask(); ++ mode = *modeptr; ++ ++ if (unlikely(dentry->d_inode && S_ISSOCK(dentry->d_inode->i_mode))) ++ return 1; ++ ++ if (unlikely(mode & (S_ISUID | S_ISGID))) { ++ return generic_fs_handler(dentry, mnt, GR_WRITE | GR_SETID, ++ GR_CHMOD_ACL_MSG); ++ } else { ++ return generic_fs_handler(dentry, mnt, GR_WRITE, GR_CHMOD_ACL_MSG); ++ } ++} ++ ++__u32 ++gr_acl_handle_chown(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++ return generic_fs_handler(dentry, mnt, GR_WRITE, GR_CHOWN_ACL_MSG); ++} ++ ++__u32 ++gr_acl_handle_setxattr(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++ return generic_fs_handler(dentry, mnt, GR_WRITE, GR_SETXATTR_ACL_MSG); ++} ++ ++__u32 ++gr_acl_handle_execve(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++ return generic_fs_handler(dentry, mnt, GR_EXEC, GR_EXEC_ACL_MSG); ++} ++ ++__u32 ++gr_acl_handle_unix(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++ return generic_fs_handler(dentry, mnt, GR_READ | GR_WRITE, ++ GR_UNIXCONNECT_ACL_MSG); ++} ++ ++/* hardlinks require at minimum create and link permission, ++ any additional privilege required is based on the ++ privilege of the file being linked to ++*/ ++__u32 ++gr_acl_handle_link(const struct dentry * new_dentry, ++ const struct dentry * parent_dentry, ++ const struct vfsmount * parent_mnt, ++ const struct dentry * old_dentry, ++ const struct vfsmount * old_mnt, const char *to) ++{ ++ __u32 mode; ++ __u32 needmode = GR_CREATE | GR_LINK; ++ __u32 needaudit = GR_AUDIT_CREATE | GR_AUDIT_LINK; ++ ++ mode = ++ gr_check_link(new_dentry, parent_dentry, parent_mnt, old_dentry, ++ old_mnt); ++ ++ if (unlikely(((mode & needmode) == needmode) && (mode & needaudit))) { ++ gr_log_fs_rbac_str(GR_DO_AUDIT, GR_LINK_ACL_MSG, old_dentry, old_mnt, to); ++ return mode; ++ } else if (unlikely(((mode & needmode) != needmode) && !(mode & GR_SUPPRESS))) { ++ gr_log_fs_rbac_str(GR_DONT_AUDIT, GR_LINK_ACL_MSG, old_dentry, old_mnt, to); ++ return 0; ++ } else if (unlikely((mode & needmode) != needmode)) ++ return 0; ++ ++ return 1; ++} ++ ++__u32 ++gr_acl_handle_symlink(const struct dentry * new_dentry, ++ const struct dentry * parent_dentry, ++ const struct vfsmount * parent_mnt, const char *from) ++{ ++ __u32 needmode = GR_WRITE | GR_CREATE; ++ __u32 mode; ++ ++ mode = ++ gr_check_create(new_dentry, parent_dentry, parent_mnt, ++ GR_CREATE | GR_AUDIT_CREATE | ++ GR_WRITE | GR_AUDIT_WRITE | GR_SUPPRESS); ++ ++ if (unlikely(mode & GR_WRITE && mode & GR_AUDITS)) { ++ gr_log_fs_str_rbac(GR_DO_AUDIT, GR_SYMLINK_ACL_MSG, from, new_dentry, parent_mnt); ++ return mode; ++ } else if (unlikely(((mode & needmode) != needmode) && !(mode & GR_SUPPRESS))) { ++ gr_log_fs_str_rbac(GR_DONT_AUDIT, GR_SYMLINK_ACL_MSG, from, new_dentry, parent_mnt); ++ return 0; ++ } else if (unlikely((mode & needmode) != needmode)) ++ return 0; ++ ++ return (GR_WRITE | GR_CREATE); ++} ++ ++static __u32 generic_fs_create_handler(const struct dentry *new_dentry, const struct dentry *parent_dentry, const struct vfsmount *parent_mnt, __u32 reqmode, const char *fmt) ++{ ++ __u32 mode; ++ ++ mode = gr_check_create(new_dentry, parent_dentry, parent_mnt, reqmode | to_gr_audit(reqmode) | GR_SUPPRESS); ++ ++ if (unlikely(((mode & (reqmode)) == (reqmode)) && mode & GR_AUDITS)) { ++ gr_log_fs_rbac_generic(GR_DO_AUDIT, fmt, new_dentry, parent_mnt); ++ return mode; ++ } else if (unlikely((mode & (reqmode)) != (reqmode) && !(mode & GR_SUPPRESS))) { ++ gr_log_fs_rbac_generic(GR_DONT_AUDIT, fmt, new_dentry, parent_mnt); ++ return 0; ++ } else if (unlikely((mode & (reqmode)) != (reqmode))) ++ return 0; ++ ++ return (reqmode); ++} ++ ++__u32 ++gr_acl_handle_mknod(const struct dentry * new_dentry, ++ const struct dentry * parent_dentry, ++ const struct vfsmount * parent_mnt, ++ const int mode) ++{ ++ __u32 reqmode = GR_WRITE | GR_CREATE; ++ if (unlikely(mode & (S_ISUID | S_ISGID))) ++ reqmode |= GR_SETID; ++ ++ return generic_fs_create_handler(new_dentry, parent_dentry, parent_mnt, ++ reqmode, GR_MKNOD_ACL_MSG); ++} ++ ++__u32 ++gr_acl_handle_mkdir(const struct dentry *new_dentry, ++ const struct dentry *parent_dentry, ++ const struct vfsmount *parent_mnt) ++{ ++ return generic_fs_create_handler(new_dentry, parent_dentry, parent_mnt, ++ GR_WRITE | GR_CREATE, GR_MKDIR_ACL_MSG); ++} ++ ++#define RENAME_CHECK_SUCCESS(old, new) \ ++ (((old & (GR_WRITE | GR_READ)) == (GR_WRITE | GR_READ)) && \ ++ ((new & (GR_WRITE | GR_READ)) == (GR_WRITE | GR_READ))) ++ ++int ++gr_acl_handle_rename(struct dentry *new_dentry, ++ struct dentry *parent_dentry, ++ const struct vfsmount *parent_mnt, ++ struct dentry *old_dentry, ++ struct inode *old_parent_inode, ++ struct vfsmount *old_mnt, const char *newname) ++{ ++ __u32 comp1, comp2; ++ int error = 0; ++ ++ if (unlikely(!gr_acl_is_enabled())) ++ return 0; ++ ++ if (!new_dentry->d_inode) { ++ comp1 = gr_check_create(new_dentry, parent_dentry, parent_mnt, ++ GR_READ | GR_WRITE | GR_CREATE | GR_AUDIT_READ | ++ GR_AUDIT_WRITE | GR_AUDIT_CREATE | GR_SUPPRESS); ++ comp2 = gr_search_file(old_dentry, GR_READ | GR_WRITE | ++ GR_DELETE | GR_AUDIT_DELETE | ++ GR_AUDIT_READ | GR_AUDIT_WRITE | ++ GR_SUPPRESS, old_mnt); ++ } else { ++ comp1 = gr_search_file(new_dentry, GR_READ | GR_WRITE | ++ GR_CREATE | GR_DELETE | ++ GR_AUDIT_CREATE | GR_AUDIT_DELETE | ++ GR_AUDIT_READ | GR_AUDIT_WRITE | ++ GR_SUPPRESS, parent_mnt); ++ comp2 = ++ gr_search_file(old_dentry, ++ GR_READ | GR_WRITE | GR_AUDIT_READ | ++ GR_DELETE | GR_AUDIT_DELETE | ++ GR_AUDIT_WRITE | GR_SUPPRESS, old_mnt); ++ } ++ ++ if (RENAME_CHECK_SUCCESS(comp1, comp2) && ++ ((comp1 & GR_AUDITS) || (comp2 & GR_AUDITS))) ++ gr_log_fs_rbac_str(GR_DO_AUDIT, GR_RENAME_ACL_MSG, old_dentry, old_mnt, newname); ++ else if (!RENAME_CHECK_SUCCESS(comp1, comp2) && !(comp1 & GR_SUPPRESS) ++ && !(comp2 & GR_SUPPRESS)) { ++ gr_log_fs_rbac_str(GR_DONT_AUDIT, GR_RENAME_ACL_MSG, old_dentry, old_mnt, newname); ++ error = -EACCES; ++ } else if (unlikely(!RENAME_CHECK_SUCCESS(comp1, comp2))) ++ error = -EACCES; ++ ++ return error; ++} ++ ++void ++gr_acl_handle_exit(void) ++{ ++ u16 id; ++ char *rolename; ++ struct file *exec_file; ++ ++ if (unlikely(current->acl_sp_role && gr_acl_is_enabled() && ++ !(current->role->roletype & GR_ROLE_PERSIST))) { ++ id = current->acl_role_id; ++ rolename = current->role->rolename; ++ gr_set_acls(1); ++ gr_log_str_int(GR_DONT_AUDIT_GOOD, GR_SPROLEL_ACL_MSG, rolename, id); ++ } ++ ++ write_lock(&grsec_exec_file_lock); ++ exec_file = current->exec_file; ++ current->exec_file = NULL; ++ write_unlock(&grsec_exec_file_lock); ++ ++ if (exec_file) ++ fput(exec_file); ++} ++ ++int ++gr_acl_handle_procpidmem(const struct task_struct *task) ++{ ++ if (unlikely(!gr_acl_is_enabled())) ++ return 0; ++ ++ if (task != current && task->acl->mode & GR_PROTPROCFD) ++ return -EACCES; ++ ++ return 0; ++} +diff --git a/grsecurity/gracl_ip.c b/grsecurity/gracl_ip.c +new file mode 100644 +index 0000000..58800a7 +--- /dev/null ++++ b/grsecurity/gracl_ip.c +@@ -0,0 +1,384 @@ ++#include <linux/kernel.h> ++#include <asm/uaccess.h> ++#include <asm/errno.h> ++#include <net/sock.h> ++#include <linux/file.h> ++#include <linux/fs.h> ++#include <linux/net.h> ++#include <linux/in.h> ++#include <linux/skbuff.h> ++#include <linux/ip.h> ++#include <linux/udp.h> ++#include <linux/types.h> ++#include <linux/sched.h> ++#include <linux/netdevice.h> ++#include <linux/inetdevice.h> ++#include <linux/gracl.h> ++#include <linux/grsecurity.h> ++#include <linux/grinternal.h> ++ ++#define GR_BIND 0x01 ++#define GR_CONNECT 0x02 ++#define GR_INVERT 0x04 ++#define GR_BINDOVERRIDE 0x08 ++#define GR_CONNECTOVERRIDE 0x10 ++#define GR_SOCK_FAMILY 0x20 ++ ++static const char * gr_protocols[IPPROTO_MAX] = { ++ "ip", "icmp", "igmp", "ggp", "ipencap", "st", "tcp", "cbt", ++ "egp", "igp", "bbn-rcc", "nvp", "pup", "argus", "emcon", "xnet", ++ "chaos", "udp", "mux", "dcn", "hmp", "prm", "xns-idp", "trunk-1", ++ "trunk-2", "leaf-1", "leaf-2", "rdp", "irtp", "iso-tp4", "netblt", "mfe-nsp", ++ "merit-inp", "sep", "3pc", "idpr", "xtp", "ddp", "idpr-cmtp", "tp++", ++ "il", "ipv6", "sdrp", "ipv6-route", "ipv6-frag", "idrp", "rsvp", "gre", ++ "mhrp", "bna", "ipv6-crypt", "ipv6-auth", "i-nlsp", "swipe", "narp", "mobile", ++ "tlsp", "skip", "ipv6-icmp", "ipv6-nonxt", "ipv6-opts", "unknown:61", "cftp", "unknown:63", ++ "sat-expak", "kryptolan", "rvd", "ippc", "unknown:68", "sat-mon", "visa", "ipcv", ++ "cpnx", "cphb", "wsn", "pvp", "br-sat-mon", "sun-nd", "wb-mon", "wb-expak", ++ "iso-ip", "vmtp", "secure-vmtp", "vines", "ttp", "nfsnet-igp", "dgp", "tcf", ++ "eigrp", "ospf", "sprite-rpc", "larp", "mtp", "ax.25", "ipip", "micp", ++ "scc-sp", "etherip", "encap", "unknown:99", "gmtp", "ifmp", "pnni", "pim", ++ "aris", "scps", "qnx", "a/n", "ipcomp", "snp", "compaq-peer", "ipx-in-ip", ++ "vrrp", "pgm", "unknown:114", "l2tp", "ddx", "iatp", "stp", "srp", ++ "uti", "smp", "sm", "ptp", "isis", "fire", "crtp", "crdup", ++ "sscopmce", "iplt", "sps", "pipe", "sctp", "fc", "unkown:134", "unknown:135", ++ "unknown:136", "unknown:137", "unknown:138", "unknown:139", "unknown:140", "unknown:141", "unknown:142", "unknown:143", ++ "unknown:144", "unknown:145", "unknown:146", "unknown:147", "unknown:148", "unknown:149", "unknown:150", "unknown:151", ++ "unknown:152", "unknown:153", "unknown:154", "unknown:155", "unknown:156", "unknown:157", "unknown:158", "unknown:159", ++ "unknown:160", "unknown:161", "unknown:162", "unknown:163", "unknown:164", "unknown:165", "unknown:166", "unknown:167", ++ "unknown:168", "unknown:169", "unknown:170", "unknown:171", "unknown:172", "unknown:173", "unknown:174", "unknown:175", ++ "unknown:176", "unknown:177", "unknown:178", "unknown:179", "unknown:180", "unknown:181", "unknown:182", "unknown:183", ++ "unknown:184", "unknown:185", "unknown:186", "unknown:187", "unknown:188", "unknown:189", "unknown:190", "unknown:191", ++ "unknown:192", "unknown:193", "unknown:194", "unknown:195", "unknown:196", "unknown:197", "unknown:198", "unknown:199", ++ "unknown:200", "unknown:201", "unknown:202", "unknown:203", "unknown:204", "unknown:205", "unknown:206", "unknown:207", ++ "unknown:208", "unknown:209", "unknown:210", "unknown:211", "unknown:212", "unknown:213", "unknown:214", "unknown:215", ++ "unknown:216", "unknown:217", "unknown:218", "unknown:219", "unknown:220", "unknown:221", "unknown:222", "unknown:223", ++ "unknown:224", "unknown:225", "unknown:226", "unknown:227", "unknown:228", "unknown:229", "unknown:230", "unknown:231", ++ "unknown:232", "unknown:233", "unknown:234", "unknown:235", "unknown:236", "unknown:237", "unknown:238", "unknown:239", ++ "unknown:240", "unknown:241", "unknown:242", "unknown:243", "unknown:244", "unknown:245", "unknown:246", "unknown:247", ++ "unknown:248", "unknown:249", "unknown:250", "unknown:251", "unknown:252", "unknown:253", "unknown:254", "unknown:255", ++ }; ++ ++static const char * gr_socktypes[SOCK_MAX] = { ++ "unknown:0", "stream", "dgram", "raw", "rdm", "seqpacket", "unknown:6", ++ "unknown:7", "unknown:8", "unknown:9", "packet" ++ }; ++ ++static const char * gr_sockfamilies[AF_MAX+1] = { ++ "unspec", "unix", "inet", "ax25", "ipx", "appletalk", "netrom", "bridge", "atmpvc", "x25", ++ "inet6", "rose", "decnet", "netbeui", "security", "key", "netlink", "packet", "ash", ++ "econet", "atmsvc", "rds", "sna", "irda", "ppox", "wanpipe", "llc", "fam_27", "fam_28", ++ "tipc", "bluetooth", "iucv", "rxrpc", "isdn", "phonet", "ieee802154", "ciaf" ++ }; ++ ++const char * ++gr_proto_to_name(unsigned char proto) ++{ ++ return gr_protocols[proto]; ++} ++ ++const char * ++gr_socktype_to_name(unsigned char type) ++{ ++ return gr_socktypes[type]; ++} ++ ++const char * ++gr_sockfamily_to_name(unsigned char family) ++{ ++ return gr_sockfamilies[family]; ++} ++ ++int ++gr_search_socket(const int domain, const int type, const int protocol) ++{ ++ struct acl_subject_label *curr; ++ const struct cred *cred = current_cred(); ++ ++ if (unlikely(!gr_acl_is_enabled())) ++ goto exit; ++ ++ if ((domain < 0) || (type < 0) || (protocol < 0) || ++ (domain >= AF_MAX) || (type >= SOCK_MAX) || (protocol >= IPPROTO_MAX)) ++ goto exit; // let the kernel handle it ++ ++ curr = current->acl; ++ ++ if (curr->sock_families[domain / 32] & (1 << (domain % 32))) { ++ /* the family is allowed, if this is PF_INET allow it only if ++ the extra sock type/protocol checks pass */ ++ if (domain == PF_INET) ++ goto inet_check; ++ goto exit; ++ } else { ++ if (curr->mode & (GR_LEARN | GR_INHERITLEARN)) { ++ __u32 fakeip = 0; ++ security_learn(GR_IP_LEARN_MSG, current->role->rolename, ++ current->role->roletype, cred->uid, ++ cred->gid, current->exec_file ? ++ gr_to_filename(current->exec_file->f_path.dentry, ++ current->exec_file->f_path.mnt) : ++ curr->filename, curr->filename, ++ &fakeip, domain, 0, 0, GR_SOCK_FAMILY, ++ ¤t->signal->saved_ip); ++ goto exit; ++ } ++ goto exit_fail; ++ } ++ ++inet_check: ++ /* the rest of this checking is for IPv4 only */ ++ if (!curr->ips) ++ goto exit; ++ ++ if ((curr->ip_type & (1 << type)) && ++ (curr->ip_proto[protocol / 32] & (1 << (protocol % 32)))) ++ goto exit; ++ ++ if (curr->mode & (GR_LEARN | GR_INHERITLEARN)) { ++ /* we don't place acls on raw sockets , and sometimes ++ dgram/ip sockets are opened for ioctl and not ++ bind/connect, so we'll fake a bind learn log */ ++ if (type == SOCK_RAW || type == SOCK_PACKET) { ++ __u32 fakeip = 0; ++ security_learn(GR_IP_LEARN_MSG, current->role->rolename, ++ current->role->roletype, cred->uid, ++ cred->gid, current->exec_file ? ++ gr_to_filename(current->exec_file->f_path.dentry, ++ current->exec_file->f_path.mnt) : ++ curr->filename, curr->filename, ++ &fakeip, 0, type, ++ protocol, GR_CONNECT, ¤t->signal->saved_ip); ++ } else if ((type == SOCK_DGRAM) && (protocol == IPPROTO_IP)) { ++ __u32 fakeip = 0; ++ security_learn(GR_IP_LEARN_MSG, current->role->rolename, ++ current->role->roletype, cred->uid, ++ cred->gid, current->exec_file ? ++ gr_to_filename(current->exec_file->f_path.dentry, ++ current->exec_file->f_path.mnt) : ++ curr->filename, curr->filename, ++ &fakeip, 0, type, ++ protocol, GR_BIND, ¤t->signal->saved_ip); ++ } ++ /* we'll log when they use connect or bind */ ++ goto exit; ++ } ++ ++exit_fail: ++ if (domain == PF_INET) ++ gr_log_str3(GR_DONT_AUDIT, GR_SOCK_MSG, gr_sockfamily_to_name(domain), ++ gr_socktype_to_name(type), gr_proto_to_name(protocol)); ++ else ++ gr_log_str2_int(GR_DONT_AUDIT, GR_SOCK_NOINET_MSG, gr_sockfamily_to_name(domain), ++ gr_socktype_to_name(type), protocol); ++ ++ return 0; ++exit: ++ return 1; ++} ++ ++int check_ip_policy(struct acl_ip_label *ip, __u32 ip_addr, __u16 ip_port, __u8 protocol, const int mode, const int type, __u32 our_addr, __u32 our_netmask) ++{ ++ if ((ip->mode & mode) && ++ (ip_port >= ip->low) && ++ (ip_port <= ip->high) && ++ ((ntohl(ip_addr) & our_netmask) == ++ (ntohl(our_addr) & our_netmask)) ++ && (ip->proto[protocol / 32] & (1 << (protocol % 32))) ++ && (ip->type & (1 << type))) { ++ if (ip->mode & GR_INVERT) ++ return 2; // specifically denied ++ else ++ return 1; // allowed ++ } ++ ++ return 0; // not specifically allowed, may continue parsing ++} ++ ++static int ++gr_search_connectbind(const int full_mode, struct sock *sk, ++ struct sockaddr_in *addr, const int type) ++{ ++ char iface[IFNAMSIZ] = {0}; ++ struct acl_subject_label *curr; ++ struct acl_ip_label *ip; ++ struct inet_sock *isk; ++ struct net_device *dev; ++ struct in_device *idev; ++ unsigned long i; ++ int ret; ++ int mode = full_mode & (GR_BIND | GR_CONNECT); ++ __u32 ip_addr = 0; ++ __u32 our_addr; ++ __u32 our_netmask; ++ char *p; ++ __u16 ip_port = 0; ++ const struct cred *cred = current_cred(); ++ ++ if (unlikely(!gr_acl_is_enabled() || sk->sk_family != PF_INET)) ++ return 0; ++ ++ curr = current->acl; ++ isk = inet_sk(sk); ++ ++ /* INADDR_ANY overriding for binds, inaddr_any_override is already in network order */ ++ if ((full_mode & GR_BINDOVERRIDE) && addr->sin_addr.s_addr == htonl(INADDR_ANY) && curr->inaddr_any_override != 0) ++ addr->sin_addr.s_addr = curr->inaddr_any_override; ++ if ((full_mode & GR_CONNECT) && isk->inet_saddr == htonl(INADDR_ANY) && curr->inaddr_any_override != 0) { ++ struct sockaddr_in saddr; ++ int err; ++ ++ saddr.sin_family = AF_INET; ++ saddr.sin_addr.s_addr = curr->inaddr_any_override; ++ saddr.sin_port = isk->inet_sport; ++ ++ err = security_socket_bind(sk->sk_socket, (struct sockaddr *)&saddr, sizeof(struct sockaddr_in)); ++ if (err) ++ return err; ++ ++ err = sk->sk_socket->ops->bind(sk->sk_socket, (struct sockaddr *)&saddr, sizeof(struct sockaddr_in)); ++ if (err) ++ return err; ++ } ++ ++ if (!curr->ips) ++ return 0; ++ ++ ip_addr = addr->sin_addr.s_addr; ++ ip_port = ntohs(addr->sin_port); ++ ++ if (curr->mode & (GR_LEARN | GR_INHERITLEARN)) { ++ security_learn(GR_IP_LEARN_MSG, current->role->rolename, ++ current->role->roletype, cred->uid, ++ cred->gid, current->exec_file ? ++ gr_to_filename(current->exec_file->f_path.dentry, ++ current->exec_file->f_path.mnt) : ++ curr->filename, curr->filename, ++ &ip_addr, ip_port, type, ++ sk->sk_protocol, mode, ¤t->signal->saved_ip); ++ return 0; ++ } ++ ++ for (i = 0; i < curr->ip_num; i++) { ++ ip = *(curr->ips + i); ++ if (ip->iface != NULL) { ++ strncpy(iface, ip->iface, IFNAMSIZ - 1); ++ p = strchr(iface, ':'); ++ if (p != NULL) ++ *p = '\0'; ++ dev = dev_get_by_name(sock_net(sk), iface); ++ if (dev == NULL) ++ continue; ++ idev = in_dev_get(dev); ++ if (idev == NULL) { ++ dev_put(dev); ++ continue; ++ } ++ rcu_read_lock(); ++ for_ifa(idev) { ++ if (!strcmp(ip->iface, ifa->ifa_label)) { ++ our_addr = ifa->ifa_address; ++ our_netmask = 0xffffffff; ++ ret = check_ip_policy(ip, ip_addr, ip_port, sk->sk_protocol, mode, type, our_addr, our_netmask); ++ if (ret == 1) { ++ rcu_read_unlock(); ++ in_dev_put(idev); ++ dev_put(dev); ++ return 0; ++ } else if (ret == 2) { ++ rcu_read_unlock(); ++ in_dev_put(idev); ++ dev_put(dev); ++ goto denied; ++ } ++ } ++ } endfor_ifa(idev); ++ rcu_read_unlock(); ++ in_dev_put(idev); ++ dev_put(dev); ++ } else { ++ our_addr = ip->addr; ++ our_netmask = ip->netmask; ++ ret = check_ip_policy(ip, ip_addr, ip_port, sk->sk_protocol, mode, type, our_addr, our_netmask); ++ if (ret == 1) ++ return 0; ++ else if (ret == 2) ++ goto denied; ++ } ++ } ++ ++denied: ++ if (mode == GR_BIND) ++ gr_log_int5_str2(GR_DONT_AUDIT, GR_BIND_ACL_MSG, &ip_addr, ip_port, gr_socktype_to_name(type), gr_proto_to_name(sk->sk_protocol)); ++ else if (mode == GR_CONNECT) ++ gr_log_int5_str2(GR_DONT_AUDIT, GR_CONNECT_ACL_MSG, &ip_addr, ip_port, gr_socktype_to_name(type), gr_proto_to_name(sk->sk_protocol)); ++ ++ return -EACCES; ++} ++ ++int ++gr_search_connect(struct socket *sock, struct sockaddr_in *addr) ++{ ++ /* always allow disconnection of dgram sockets with connect */ ++ if (addr->sin_family == AF_UNSPEC) ++ return 0; ++ return gr_search_connectbind(GR_CONNECT | GR_CONNECTOVERRIDE, sock->sk, addr, sock->type); ++} ++ ++int ++gr_search_bind(struct socket *sock, struct sockaddr_in *addr) ++{ ++ return gr_search_connectbind(GR_BIND | GR_BINDOVERRIDE, sock->sk, addr, sock->type); ++} ++ ++int gr_search_listen(struct socket *sock) ++{ ++ struct sock *sk = sock->sk; ++ struct sockaddr_in addr; ++ ++ addr.sin_addr.s_addr = inet_sk(sk)->inet_saddr; ++ addr.sin_port = inet_sk(sk)->inet_sport; ++ ++ return gr_search_connectbind(GR_BIND | GR_CONNECTOVERRIDE, sock->sk, &addr, sock->type); ++} ++ ++int gr_search_accept(struct socket *sock) ++{ ++ struct sock *sk = sock->sk; ++ struct sockaddr_in addr; ++ ++ addr.sin_addr.s_addr = inet_sk(sk)->inet_saddr; ++ addr.sin_port = inet_sk(sk)->inet_sport; ++ ++ return gr_search_connectbind(GR_BIND | GR_CONNECTOVERRIDE, sock->sk, &addr, sock->type); ++} ++ ++int ++gr_search_udp_sendmsg(struct sock *sk, struct sockaddr_in *addr) ++{ ++ if (addr) ++ return gr_search_connectbind(GR_CONNECT, sk, addr, SOCK_DGRAM); ++ else { ++ struct sockaddr_in sin; ++ const struct inet_sock *inet = inet_sk(sk); ++ ++ sin.sin_addr.s_addr = inet->inet_daddr; ++ sin.sin_port = inet->inet_dport; ++ ++ return gr_search_connectbind(GR_CONNECT | GR_CONNECTOVERRIDE, sk, &sin, SOCK_DGRAM); ++ } ++} ++ ++int ++gr_search_udp_recvmsg(struct sock *sk, const struct sk_buff *skb) ++{ ++ struct sockaddr_in sin; ++ ++ if (unlikely(skb->len < sizeof (struct udphdr))) ++ return 0; // skip this packet ++ ++ sin.sin_addr.s_addr = ip_hdr(skb)->saddr; ++ sin.sin_port = udp_hdr(skb)->source; ++ ++ return gr_search_connectbind(GR_CONNECT | GR_CONNECTOVERRIDE, sk, &sin, SOCK_DGRAM); ++} +diff --git a/grsecurity/gracl_learn.c b/grsecurity/gracl_learn.c +new file mode 100644 +index 0000000..25f54ef +--- /dev/null ++++ b/grsecurity/gracl_learn.c +@@ -0,0 +1,207 @@ ++#include <linux/kernel.h> ++#include <linux/mm.h> ++#include <linux/sched.h> ++#include <linux/poll.h> ++#include <linux/string.h> ++#include <linux/file.h> ++#include <linux/types.h> ++#include <linux/vmalloc.h> ++#include <linux/grinternal.h> ++ ++extern ssize_t write_grsec_handler(struct file * file, const char __user * buf, ++ size_t count, loff_t *ppos); ++extern int gr_acl_is_enabled(void); ++ ++static DECLARE_WAIT_QUEUE_HEAD(learn_wait); ++static int gr_learn_attached; ++ ++/* use a 512k buffer */ ++#define LEARN_BUFFER_SIZE (512 * 1024) ++ ++static DEFINE_SPINLOCK(gr_learn_lock); ++static DEFINE_MUTEX(gr_learn_user_mutex); ++ ++/* we need to maintain two buffers, so that the kernel context of grlearn ++ uses a semaphore around the userspace copying, and the other kernel contexts ++ use a spinlock when copying into the buffer, since they cannot sleep ++*/ ++static char *learn_buffer; ++static char *learn_buffer_user; ++static int learn_buffer_len; ++static int learn_buffer_user_len; ++ ++static ssize_t ++read_learn(struct file *file, char __user * buf, size_t count, loff_t * ppos) ++{ ++ DECLARE_WAITQUEUE(wait, current); ++ ssize_t retval = 0; ++ ++ add_wait_queue(&learn_wait, &wait); ++ set_current_state(TASK_INTERRUPTIBLE); ++ do { ++ mutex_lock(&gr_learn_user_mutex); ++ spin_lock(&gr_learn_lock); ++ if (learn_buffer_len) ++ break; ++ spin_unlock(&gr_learn_lock); ++ mutex_unlock(&gr_learn_user_mutex); ++ if (file->f_flags & O_NONBLOCK) { ++ retval = -EAGAIN; ++ goto out; ++ } ++ if (signal_pending(current)) { ++ retval = -ERESTARTSYS; ++ goto out; ++ } ++ ++ schedule(); ++ } while (1); ++ ++ memcpy(learn_buffer_user, learn_buffer, learn_buffer_len); ++ learn_buffer_user_len = learn_buffer_len; ++ retval = learn_buffer_len; ++ learn_buffer_len = 0; ++ ++ spin_unlock(&gr_learn_lock); ++ ++ if (copy_to_user(buf, learn_buffer_user, learn_buffer_user_len)) ++ retval = -EFAULT; ++ ++ mutex_unlock(&gr_learn_user_mutex); ++out: ++ set_current_state(TASK_RUNNING); ++ remove_wait_queue(&learn_wait, &wait); ++ return retval; ++} ++ ++static unsigned int ++poll_learn(struct file * file, poll_table * wait) ++{ ++ poll_wait(file, &learn_wait, wait); ++ ++ if (learn_buffer_len) ++ return (POLLIN | POLLRDNORM); ++ ++ return 0; ++} ++ ++void ++gr_clear_learn_entries(void) ++{ ++ char *tmp; ++ ++ mutex_lock(&gr_learn_user_mutex); ++ spin_lock(&gr_learn_lock); ++ tmp = learn_buffer; ++ learn_buffer = NULL; ++ spin_unlock(&gr_learn_lock); ++ if (tmp) ++ vfree(tmp); ++ if (learn_buffer_user != NULL) { ++ vfree(learn_buffer_user); ++ learn_buffer_user = NULL; ++ } ++ learn_buffer_len = 0; ++ mutex_unlock(&gr_learn_user_mutex); ++ ++ return; ++} ++ ++void ++gr_add_learn_entry(const char *fmt, ...) ++{ ++ va_list args; ++ unsigned int len; ++ ++ if (!gr_learn_attached) ++ return; ++ ++ spin_lock(&gr_learn_lock); ++ ++ /* leave a gap at the end so we know when it's "full" but don't have to ++ compute the exact length of the string we're trying to append ++ */ ++ if (learn_buffer_len > LEARN_BUFFER_SIZE - 16384) { ++ spin_unlock(&gr_learn_lock); ++ wake_up_interruptible(&learn_wait); ++ return; ++ } ++ if (learn_buffer == NULL) { ++ spin_unlock(&gr_learn_lock); ++ return; ++ } ++ ++ va_start(args, fmt); ++ len = vsnprintf(learn_buffer + learn_buffer_len, LEARN_BUFFER_SIZE - learn_buffer_len, fmt, args); ++ va_end(args); ++ ++ learn_buffer_len += len + 1; ++ ++ spin_unlock(&gr_learn_lock); ++ wake_up_interruptible(&learn_wait); ++ ++ return; ++} ++ ++static int ++open_learn(struct inode *inode, struct file *file) ++{ ++ if (file->f_mode & FMODE_READ && gr_learn_attached) ++ return -EBUSY; ++ if (file->f_mode & FMODE_READ) { ++ int retval = 0; ++ mutex_lock(&gr_learn_user_mutex); ++ if (learn_buffer == NULL) ++ learn_buffer = vmalloc(LEARN_BUFFER_SIZE); ++ if (learn_buffer_user == NULL) ++ learn_buffer_user = vmalloc(LEARN_BUFFER_SIZE); ++ if (learn_buffer == NULL) { ++ retval = -ENOMEM; ++ goto out_error; ++ } ++ if (learn_buffer_user == NULL) { ++ retval = -ENOMEM; ++ goto out_error; ++ } ++ learn_buffer_len = 0; ++ learn_buffer_user_len = 0; ++ gr_learn_attached = 1; ++out_error: ++ mutex_unlock(&gr_learn_user_mutex); ++ return retval; ++ } ++ return 0; ++} ++ ++static int ++close_learn(struct inode *inode, struct file *file) ++{ ++ if (file->f_mode & FMODE_READ) { ++ char *tmp = NULL; ++ mutex_lock(&gr_learn_user_mutex); ++ spin_lock(&gr_learn_lock); ++ tmp = learn_buffer; ++ learn_buffer = NULL; ++ spin_unlock(&gr_learn_lock); ++ if (tmp) ++ vfree(tmp); ++ if (learn_buffer_user != NULL) { ++ vfree(learn_buffer_user); ++ learn_buffer_user = NULL; ++ } ++ learn_buffer_len = 0; ++ learn_buffer_user_len = 0; ++ gr_learn_attached = 0; ++ mutex_unlock(&gr_learn_user_mutex); ++ } ++ ++ return 0; ++} ++ ++const struct file_operations grsec_fops = { ++ .read = read_learn, ++ .write = write_grsec_handler, ++ .open = open_learn, ++ .release = close_learn, ++ .poll = poll_learn, ++}; +diff --git a/grsecurity/gracl_res.c b/grsecurity/gracl_res.c +new file mode 100644 +index 0000000..39645c9 +--- /dev/null ++++ b/grsecurity/gracl_res.c +@@ -0,0 +1,68 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/gracl.h> ++#include <linux/grinternal.h> ++ ++static const char *restab_log[] = { ++ [RLIMIT_CPU] = "RLIMIT_CPU", ++ [RLIMIT_FSIZE] = "RLIMIT_FSIZE", ++ [RLIMIT_DATA] = "RLIMIT_DATA", ++ [RLIMIT_STACK] = "RLIMIT_STACK", ++ [RLIMIT_CORE] = "RLIMIT_CORE", ++ [RLIMIT_RSS] = "RLIMIT_RSS", ++ [RLIMIT_NPROC] = "RLIMIT_NPROC", ++ [RLIMIT_NOFILE] = "RLIMIT_NOFILE", ++ [RLIMIT_MEMLOCK] = "RLIMIT_MEMLOCK", ++ [RLIMIT_AS] = "RLIMIT_AS", ++ [RLIMIT_LOCKS] = "RLIMIT_LOCKS", ++ [RLIMIT_SIGPENDING] = "RLIMIT_SIGPENDING", ++ [RLIMIT_MSGQUEUE] = "RLIMIT_MSGQUEUE", ++ [RLIMIT_NICE] = "RLIMIT_NICE", ++ [RLIMIT_RTPRIO] = "RLIMIT_RTPRIO", ++ [RLIMIT_RTTIME] = "RLIMIT_RTTIME", ++ [GR_CRASH_RES] = "RLIMIT_CRASH" ++}; ++ ++void ++gr_log_resource(const struct task_struct *task, ++ const int res, const unsigned long wanted, const int gt) ++{ ++ const struct cred *cred; ++ unsigned long rlim; ++ ++ if (!gr_acl_is_enabled() && !grsec_resource_logging) ++ return; ++ ++ // not yet supported resource ++ if (unlikely(!restab_log[res])) ++ return; ++ ++ if (res == RLIMIT_CPU || res == RLIMIT_RTTIME) ++ rlim = task_rlimit_max(task, res); ++ else ++ rlim = task_rlimit(task, res); ++ ++ if (likely((rlim == RLIM_INFINITY) || (gt && wanted <= rlim) || (!gt && wanted < rlim))) ++ return; ++ ++ rcu_read_lock(); ++ cred = __task_cred(task); ++ ++ if (res == RLIMIT_NPROC && ++ (cap_raised(cred->cap_effective, CAP_SYS_ADMIN) || ++ cap_raised(cred->cap_effective, CAP_SYS_RESOURCE))) ++ goto out_rcu_unlock; ++ else if (res == RLIMIT_MEMLOCK && ++ cap_raised(cred->cap_effective, CAP_IPC_LOCK)) ++ goto out_rcu_unlock; ++ else if (res == RLIMIT_NICE && cap_raised(cred->cap_effective, CAP_SYS_NICE)) ++ goto out_rcu_unlock; ++ rcu_read_unlock(); ++ ++ gr_log_res_ulong2_str(GR_DONT_AUDIT, GR_RESOURCE_MSG, task, wanted, restab_log[res], rlim); ++ ++ return; ++out_rcu_unlock: ++ rcu_read_unlock(); ++ return; ++} +diff --git a/grsecurity/gracl_segv.c b/grsecurity/gracl_segv.c +new file mode 100644 +index 0000000..5556be3 +--- /dev/null ++++ b/grsecurity/gracl_segv.c +@@ -0,0 +1,299 @@ ++#include <linux/kernel.h> ++#include <linux/mm.h> ++#include <asm/uaccess.h> ++#include <asm/errno.h> ++#include <asm/mman.h> ++#include <net/sock.h> ++#include <linux/file.h> ++#include <linux/fs.h> ++#include <linux/net.h> ++#include <linux/in.h> ++#include <linux/slab.h> ++#include <linux/types.h> ++#include <linux/sched.h> ++#include <linux/timer.h> ++#include <linux/gracl.h> ++#include <linux/grsecurity.h> ++#include <linux/grinternal.h> ++ ++static struct crash_uid *uid_set; ++static unsigned short uid_used; ++static DEFINE_SPINLOCK(gr_uid_lock); ++extern rwlock_t gr_inode_lock; ++extern struct acl_subject_label * ++ lookup_acl_subj_label(const ino_t inode, const dev_t dev, ++ struct acl_role_label *role); ++ ++#ifdef CONFIG_BTRFS_FS ++extern dev_t get_btrfs_dev_from_inode(struct inode *inode); ++extern int btrfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat); ++#endif ++ ++static inline dev_t __get_dev(const struct dentry *dentry) ++{ ++#ifdef CONFIG_BTRFS_FS ++ if (dentry->d_inode->i_op && dentry->d_inode->i_op->getattr == &btrfs_getattr) ++ return get_btrfs_dev_from_inode(dentry->d_inode); ++ else ++#endif ++ return dentry->d_inode->i_sb->s_dev; ++} ++ ++int ++gr_init_uidset(void) ++{ ++ uid_set = ++ kmalloc(GR_UIDTABLE_MAX * sizeof (struct crash_uid), GFP_KERNEL); ++ uid_used = 0; ++ ++ return uid_set ? 1 : 0; ++} ++ ++void ++gr_free_uidset(void) ++{ ++ if (uid_set) ++ kfree(uid_set); ++ ++ return; ++} ++ ++int ++gr_find_uid(const uid_t uid) ++{ ++ struct crash_uid *tmp = uid_set; ++ uid_t buid; ++ int low = 0, high = uid_used - 1, mid; ++ ++ while (high >= low) { ++ mid = (low + high) >> 1; ++ buid = tmp[mid].uid; ++ if (buid == uid) ++ return mid; ++ if (buid > uid) ++ high = mid - 1; ++ if (buid < uid) ++ low = mid + 1; ++ } ++ ++ return -1; ++} ++ ++static __inline__ void ++gr_insertsort(void) ++{ ++ unsigned short i, j; ++ struct crash_uid index; ++ ++ for (i = 1; i < uid_used; i++) { ++ index = uid_set[i]; ++ j = i; ++ while ((j > 0) && uid_set[j - 1].uid > index.uid) { ++ uid_set[j] = uid_set[j - 1]; ++ j--; ++ } ++ uid_set[j] = index; ++ } ++ ++ return; ++} ++ ++static __inline__ void ++gr_insert_uid(const uid_t uid, const unsigned long expires) ++{ ++ int loc; ++ ++ if (uid_used == GR_UIDTABLE_MAX) ++ return; ++ ++ loc = gr_find_uid(uid); ++ ++ if (loc >= 0) { ++ uid_set[loc].expires = expires; ++ return; ++ } ++ ++ uid_set[uid_used].uid = uid; ++ uid_set[uid_used].expires = expires; ++ uid_used++; ++ ++ gr_insertsort(); ++ ++ return; ++} ++ ++void ++gr_remove_uid(const unsigned short loc) ++{ ++ unsigned short i; ++ ++ for (i = loc + 1; i < uid_used; i++) ++ uid_set[i - 1] = uid_set[i]; ++ ++ uid_used--; ++ ++ return; ++} ++ ++int ++gr_check_crash_uid(const uid_t uid) ++{ ++ int loc; ++ int ret = 0; ++ ++ if (unlikely(!gr_acl_is_enabled())) ++ return 0; ++ ++ spin_lock(&gr_uid_lock); ++ loc = gr_find_uid(uid); ++ ++ if (loc < 0) ++ goto out_unlock; ++ ++ if (time_before_eq(uid_set[loc].expires, get_seconds())) ++ gr_remove_uid(loc); ++ else ++ ret = 1; ++ ++out_unlock: ++ spin_unlock(&gr_uid_lock); ++ return ret; ++} ++ ++static __inline__ int ++proc_is_setxid(const struct cred *cred) ++{ ++ if (cred->uid != cred->euid || cred->uid != cred->suid || ++ cred->uid != cred->fsuid) ++ return 1; ++ if (cred->gid != cred->egid || cred->gid != cred->sgid || ++ cred->gid != cred->fsgid) ++ return 1; ++ ++ return 0; ++} ++ ++extern int gr_fake_force_sig(int sig, struct task_struct *t); ++ ++void ++gr_handle_crash(struct task_struct *task, const int sig) ++{ ++ struct acl_subject_label *curr; ++ struct task_struct *tsk, *tsk2; ++ const struct cred *cred; ++ const struct cred *cred2; ++ ++ if (sig != SIGSEGV && sig != SIGKILL && sig != SIGBUS && sig != SIGILL) ++ return; ++ ++ if (unlikely(!gr_acl_is_enabled())) ++ return; ++ ++ curr = task->acl; ++ ++ if (!(curr->resmask & (1 << GR_CRASH_RES))) ++ return; ++ ++ if (time_before_eq(curr->expires, get_seconds())) { ++ curr->expires = 0; ++ curr->crashes = 0; ++ } ++ ++ curr->crashes++; ++ ++ if (!curr->expires) ++ curr->expires = get_seconds() + curr->res[GR_CRASH_RES].rlim_max; ++ ++ if ((curr->crashes >= curr->res[GR_CRASH_RES].rlim_cur) && ++ time_after(curr->expires, get_seconds())) { ++ rcu_read_lock(); ++ cred = __task_cred(task); ++ if (cred->uid && proc_is_setxid(cred)) { ++ gr_log_crash1(GR_DONT_AUDIT, GR_SEGVSTART_ACL_MSG, task, curr->res[GR_CRASH_RES].rlim_max); ++ spin_lock(&gr_uid_lock); ++ gr_insert_uid(cred->uid, curr->expires); ++ spin_unlock(&gr_uid_lock); ++ curr->expires = 0; ++ curr->crashes = 0; ++ read_lock(&tasklist_lock); ++ do_each_thread(tsk2, tsk) { ++ cred2 = __task_cred(tsk); ++ if (tsk != task && cred2->uid == cred->uid) ++ gr_fake_force_sig(SIGKILL, tsk); ++ } while_each_thread(tsk2, tsk); ++ read_unlock(&tasklist_lock); ++ } else { ++ gr_log_crash2(GR_DONT_AUDIT, GR_SEGVNOSUID_ACL_MSG, task, curr->res[GR_CRASH_RES].rlim_max); ++ read_lock(&tasklist_lock); ++ read_lock(&grsec_exec_file_lock); ++ do_each_thread(tsk2, tsk) { ++ if (likely(tsk != task)) { ++ // if this thread has the same subject as the one that triggered ++ // RES_CRASH and it's the same binary, kill it ++ if (tsk->acl == task->acl && tsk->exec_file == task->exec_file) ++ gr_fake_force_sig(SIGKILL, tsk); ++ } ++ } while_each_thread(tsk2, tsk); ++ read_unlock(&grsec_exec_file_lock); ++ read_unlock(&tasklist_lock); ++ } ++ rcu_read_unlock(); ++ } ++ ++ return; ++} ++ ++int ++gr_check_crash_exec(const struct file *filp) ++{ ++ struct acl_subject_label *curr; ++ ++ if (unlikely(!gr_acl_is_enabled())) ++ return 0; ++ ++ read_lock(&gr_inode_lock); ++ curr = lookup_acl_subj_label(filp->f_path.dentry->d_inode->i_ino, ++ __get_dev(filp->f_path.dentry), ++ current->role); ++ read_unlock(&gr_inode_lock); ++ ++ if (!curr || !(curr->resmask & (1 << GR_CRASH_RES)) || ++ (!curr->crashes && !curr->expires)) ++ return 0; ++ ++ if ((curr->crashes >= curr->res[GR_CRASH_RES].rlim_cur) && ++ time_after(curr->expires, get_seconds())) ++ return 1; ++ else if (time_before_eq(curr->expires, get_seconds())) { ++ curr->crashes = 0; ++ curr->expires = 0; ++ } ++ ++ return 0; ++} ++ ++void ++gr_handle_alertkill(struct task_struct *task) ++{ ++ struct acl_subject_label *curracl; ++ __u32 curr_ip; ++ struct task_struct *p, *p2; ++ ++ if (unlikely(!gr_acl_is_enabled())) ++ return; ++ ++ curracl = task->acl; ++ curr_ip = task->signal->curr_ip; ++ ++ if ((curracl->mode & GR_KILLIPPROC) && curr_ip) { ++ read_lock(&tasklist_lock); ++ do_each_thread(p2, p) { ++ if (p->signal->curr_ip == curr_ip) ++ gr_fake_force_sig(SIGKILL, p); ++ } while_each_thread(p2, p); ++ read_unlock(&tasklist_lock); ++ } else if (curracl->mode & GR_KILLPROC) ++ gr_fake_force_sig(SIGKILL, task); ++ ++ return; ++} +diff --git a/grsecurity/gracl_shm.c b/grsecurity/gracl_shm.c +new file mode 100644 +index 0000000..9d83a69 +--- /dev/null ++++ b/grsecurity/gracl_shm.c +@@ -0,0 +1,40 @@ ++#include <linux/kernel.h> ++#include <linux/mm.h> ++#include <linux/sched.h> ++#include <linux/file.h> ++#include <linux/ipc.h> ++#include <linux/gracl.h> ++#include <linux/grsecurity.h> ++#include <linux/grinternal.h> ++ ++int ++gr_handle_shmat(const pid_t shm_cprid, const pid_t shm_lapid, ++ const time_t shm_createtime, const uid_t cuid, const int shmid) ++{ ++ struct task_struct *task; ++ ++ if (!gr_acl_is_enabled()) ++ return 1; ++ ++ rcu_read_lock(); ++ read_lock(&tasklist_lock); ++ ++ task = find_task_by_vpid(shm_cprid); ++ ++ if (unlikely(!task)) ++ task = find_task_by_vpid(shm_lapid); ++ ++ if (unlikely(task && (time_before_eq((unsigned long)task->start_time.tv_sec, (unsigned long)shm_createtime) || ++ (task->pid == shm_lapid)) && ++ (task->acl->mode & GR_PROTSHM) && ++ (task->acl != current->acl))) { ++ read_unlock(&tasklist_lock); ++ rcu_read_unlock(); ++ gr_log_int3(GR_DONT_AUDIT, GR_SHMAT_ACL_MSG, cuid, shm_cprid, shmid); ++ return 0; ++ } ++ read_unlock(&tasklist_lock); ++ rcu_read_unlock(); ++ ++ return 1; ++} +diff --git a/grsecurity/grsec_chdir.c b/grsecurity/grsec_chdir.c +new file mode 100644 +index 0000000..bc0be01 +--- /dev/null ++++ b/grsecurity/grsec_chdir.c +@@ -0,0 +1,19 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/fs.h> ++#include <linux/file.h> ++#include <linux/grsecurity.h> ++#include <linux/grinternal.h> ++ ++void ++gr_log_chdir(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++#ifdef CONFIG_GRKERNSEC_AUDIT_CHDIR ++ if ((grsec_enable_chdir && grsec_enable_group && ++ in_group_p(grsec_audit_gid)) || (grsec_enable_chdir && ++ !grsec_enable_group)) { ++ gr_log_fs_generic(GR_DO_AUDIT, GR_CHDIR_AUDIT_MSG, dentry, mnt); ++ } ++#endif ++ return; ++} +diff --git a/grsecurity/grsec_chroot.c b/grsecurity/grsec_chroot.c +new file mode 100644 +index 0000000..9807ee2 +--- /dev/null ++++ b/grsecurity/grsec_chroot.c +@@ -0,0 +1,368 @@ ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/sched.h> ++#include <linux/file.h> ++#include <linux/fs.h> ++#include <linux/mount.h> ++#include <linux/types.h> ++#include "../fs/mount.h" ++#include <linux/grsecurity.h> ++#include <linux/grinternal.h> ++ ++void gr_set_chroot_entries(struct task_struct *task, struct path *path) ++{ ++#ifdef CONFIG_GRKERNSEC ++ if (task->pid > 1 && path->dentry != init_task.fs->root.dentry && ++ path->dentry != task->nsproxy->mnt_ns->root->mnt.mnt_root) ++ task->gr_is_chrooted = 1; ++ else ++ task->gr_is_chrooted = 0; ++ ++ task->gr_chroot_dentry = path->dentry; ++#endif ++ return; ++} ++ ++void gr_clear_chroot_entries(struct task_struct *task) ++{ ++#ifdef CONFIG_GRKERNSEC ++ task->gr_is_chrooted = 0; ++ task->gr_chroot_dentry = NULL; ++#endif ++ return; ++} ++ ++int ++gr_handle_chroot_unix(const pid_t pid) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_UNIX ++ struct task_struct *p; ++ ++ if (unlikely(!grsec_enable_chroot_unix)) ++ return 1; ++ ++ if (likely(!proc_is_chrooted(current))) ++ return 1; ++ ++ rcu_read_lock(); ++ read_lock(&tasklist_lock); ++ p = find_task_by_vpid_unrestricted(pid); ++ if (unlikely(p && !have_same_root(current, p))) { ++ read_unlock(&tasklist_lock); ++ rcu_read_unlock(); ++ gr_log_noargs(GR_DONT_AUDIT, GR_UNIX_CHROOT_MSG); ++ return 0; ++ } ++ read_unlock(&tasklist_lock); ++ rcu_read_unlock(); ++#endif ++ return 1; ++} ++ ++int ++gr_handle_chroot_nice(void) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_NICE ++ if (grsec_enable_chroot_nice && proc_is_chrooted(current)) { ++ gr_log_noargs(GR_DONT_AUDIT, GR_NICE_CHROOT_MSG); ++ return -EPERM; ++ } ++#endif ++ return 0; ++} ++ ++int ++gr_handle_chroot_setpriority(struct task_struct *p, const int niceval) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_NICE ++ if (grsec_enable_chroot_nice && (niceval < task_nice(p)) ++ && proc_is_chrooted(current)) { ++ gr_log_str_int(GR_DONT_AUDIT, GR_PRIORITY_CHROOT_MSG, p->comm, p->pid); ++ return -EACCES; ++ } ++#endif ++ return 0; ++} ++ ++int ++gr_handle_chroot_rawio(const struct inode *inode) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS ++ if (grsec_enable_chroot_caps && proc_is_chrooted(current) && ++ inode && S_ISBLK(inode->i_mode) && !capable(CAP_SYS_RAWIO)) ++ return 1; ++#endif ++ return 0; ++} ++ ++int ++gr_handle_chroot_fowner(struct pid *pid, enum pid_type type) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK ++ struct task_struct *p; ++ int ret = 0; ++ if (!grsec_enable_chroot_findtask || !proc_is_chrooted(current) || !pid) ++ return ret; ++ ++ read_lock(&tasklist_lock); ++ do_each_pid_task(pid, type, p) { ++ if (!have_same_root(current, p)) { ++ ret = 1; ++ goto out; ++ } ++ } while_each_pid_task(pid, type, p); ++out: ++ read_unlock(&tasklist_lock); ++ return ret; ++#endif ++ return 0; ++} ++ ++int ++gr_pid_is_chrooted(struct task_struct *p) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK ++ if (!grsec_enable_chroot_findtask || !proc_is_chrooted(current) || p == NULL) ++ return 0; ++ ++ if ((p->exit_state & (EXIT_ZOMBIE | EXIT_DEAD)) || ++ !have_same_root(current, p)) { ++ return 1; ++ } ++#endif ++ return 0; ++} ++ ++EXPORT_SYMBOL(gr_pid_is_chrooted); ++ ++#if defined(CONFIG_GRKERNSEC_CHROOT_DOUBLE) || defined(CONFIG_GRKERNSEC_CHROOT_FCHDIR) ++int gr_is_outside_chroot(const struct dentry *u_dentry, const struct vfsmount *u_mnt) ++{ ++ struct path path, currentroot; ++ int ret = 0; ++ ++ path.dentry = (struct dentry *)u_dentry; ++ path.mnt = (struct vfsmount *)u_mnt; ++ get_fs_root(current->fs, ¤troot); ++ if (path_is_under(&path, ¤troot)) ++ ret = 1; ++ path_put(¤troot); ++ ++ return ret; ++} ++#endif ++ ++int ++gr_chroot_fchdir(struct dentry *u_dentry, struct vfsmount *u_mnt) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_FCHDIR ++ if (!grsec_enable_chroot_fchdir) ++ return 1; ++ ++ if (!proc_is_chrooted(current)) ++ return 1; ++ else if (!gr_is_outside_chroot(u_dentry, u_mnt)) { ++ gr_log_fs_generic(GR_DONT_AUDIT, GR_CHROOT_FCHDIR_MSG, u_dentry, u_mnt); ++ return 0; ++ } ++#endif ++ return 1; ++} ++ ++int ++gr_chroot_shmat(const pid_t shm_cprid, const pid_t shm_lapid, ++ const time_t shm_createtime) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_SHMAT ++ struct task_struct *p; ++ time_t starttime; ++ ++ if (unlikely(!grsec_enable_chroot_shmat)) ++ return 1; ++ ++ if (likely(!proc_is_chrooted(current))) ++ return 1; ++ ++ rcu_read_lock(); ++ read_lock(&tasklist_lock); ++ ++ if ((p = find_task_by_vpid_unrestricted(shm_cprid))) { ++ starttime = p->start_time.tv_sec; ++ if (time_before_eq((unsigned long)starttime, (unsigned long)shm_createtime)) { ++ if (have_same_root(current, p)) { ++ goto allow; ++ } else { ++ read_unlock(&tasklist_lock); ++ rcu_read_unlock(); ++ gr_log_noargs(GR_DONT_AUDIT, GR_SHMAT_CHROOT_MSG); ++ return 0; ++ } ++ } ++ /* creator exited, pid reuse, fall through to next check */ ++ } ++ if ((p = find_task_by_vpid_unrestricted(shm_lapid))) { ++ if (unlikely(!have_same_root(current, p))) { ++ read_unlock(&tasklist_lock); ++ rcu_read_unlock(); ++ gr_log_noargs(GR_DONT_AUDIT, GR_SHMAT_CHROOT_MSG); ++ return 0; ++ } ++ } ++ ++allow: ++ read_unlock(&tasklist_lock); ++ rcu_read_unlock(); ++#endif ++ return 1; ++} ++ ++void ++gr_log_chroot_exec(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_EXECLOG ++ if (grsec_enable_chroot_execlog && proc_is_chrooted(current)) ++ gr_log_fs_generic(GR_DO_AUDIT, GR_EXEC_CHROOT_MSG, dentry, mnt); ++#endif ++ return; ++} ++ ++int ++gr_handle_chroot_mknod(const struct dentry *dentry, ++ const struct vfsmount *mnt, const int mode) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_MKNOD ++ if (grsec_enable_chroot_mknod && !S_ISFIFO(mode) && !S_ISREG(mode) && ++ proc_is_chrooted(current)) { ++ gr_log_fs_generic(GR_DONT_AUDIT, GR_MKNOD_CHROOT_MSG, dentry, mnt); ++ return -EPERM; ++ } ++#endif ++ return 0; ++} ++ ++int ++gr_handle_chroot_mount(const struct dentry *dentry, ++ const struct vfsmount *mnt, const char *dev_name) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_MOUNT ++ if (grsec_enable_chroot_mount && proc_is_chrooted(current)) { ++ gr_log_str_fs(GR_DONT_AUDIT, GR_MOUNT_CHROOT_MSG, dev_name ? dev_name : "none", dentry, mnt); ++ return -EPERM; ++ } ++#endif ++ return 0; ++} ++ ++int ++gr_handle_chroot_pivot(void) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_PIVOT ++ if (grsec_enable_chroot_pivot && proc_is_chrooted(current)) { ++ gr_log_noargs(GR_DONT_AUDIT, GR_PIVOT_CHROOT_MSG); ++ return -EPERM; ++ } ++#endif ++ return 0; ++} ++ ++int ++gr_handle_chroot_chroot(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_DOUBLE ++ if (grsec_enable_chroot_double && proc_is_chrooted(current) && ++ !gr_is_outside_chroot(dentry, mnt)) { ++ gr_log_fs_generic(GR_DONT_AUDIT, GR_CHROOT_CHROOT_MSG, dentry, mnt); ++ return -EPERM; ++ } ++#endif ++ return 0; ++} ++ ++extern const char *captab_log[]; ++extern int captab_log_entries; ++ ++int ++gr_task_chroot_is_capable(const struct task_struct *task, const struct cred *cred, const int cap) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS ++ if (grsec_enable_chroot_caps && proc_is_chrooted(task)) { ++ kernel_cap_t chroot_caps = GR_CHROOT_CAPS; ++ if (cap_raised(chroot_caps, cap)) { ++ if (cap_raised(cred->cap_effective, cap) && cap < captab_log_entries) { ++ gr_log_cap(GR_DONT_AUDIT, GR_CAP_CHROOT_MSG, task, captab_log[cap]); ++ } ++ return 0; ++ } ++ } ++#endif ++ return 1; ++} ++ ++int ++gr_chroot_is_capable(const int cap) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS ++ return gr_task_chroot_is_capable(current, current_cred(), cap); ++#endif ++ return 1; ++} ++ ++int ++gr_task_chroot_is_capable_nolog(const struct task_struct *task, const int cap) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS ++ if (grsec_enable_chroot_caps && proc_is_chrooted(task)) { ++ kernel_cap_t chroot_caps = GR_CHROOT_CAPS; ++ if (cap_raised(chroot_caps, cap)) { ++ return 0; ++ } ++ } ++#endif ++ return 1; ++} ++ ++int ++gr_chroot_is_capable_nolog(const int cap) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS ++ return gr_task_chroot_is_capable_nolog(current, cap); ++#endif ++ return 1; ++} ++ ++int ++gr_handle_chroot_sysctl(const int op) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_SYSCTL ++ if (grsec_enable_chroot_sysctl && (op & MAY_WRITE) && ++ proc_is_chrooted(current)) ++ return -EACCES; ++#endif ++ return 0; ++} ++ ++void ++gr_handle_chroot_chdir(struct path *path) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_CHDIR ++ if (grsec_enable_chroot_chdir) ++ set_fs_pwd(current->fs, path); ++#endif ++ return; ++} ++ ++int ++gr_handle_chroot_chmod(const struct dentry *dentry, ++ const struct vfsmount *mnt, const int mode) ++{ ++#ifdef CONFIG_GRKERNSEC_CHROOT_CHMOD ++ /* allow chmod +s on directories, but not files */ ++ if (grsec_enable_chroot_chmod && !S_ISDIR(dentry->d_inode->i_mode) && ++ ((mode & S_ISUID) || ((mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP))) && ++ proc_is_chrooted(current)) { ++ gr_log_fs_generic(GR_DONT_AUDIT, GR_CHMOD_CHROOT_MSG, dentry, mnt); ++ return -EPERM; ++ } ++#endif ++ return 0; ++} +diff --git a/grsecurity/grsec_disabled.c b/grsecurity/grsec_disabled.c +new file mode 100644 +index 0000000..213ad8b +--- /dev/null ++++ b/grsecurity/grsec_disabled.c +@@ -0,0 +1,437 @@ ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/sched.h> ++#include <linux/file.h> ++#include <linux/fs.h> ++#include <linux/kdev_t.h> ++#include <linux/net.h> ++#include <linux/in.h> ++#include <linux/ip.h> ++#include <linux/skbuff.h> ++#include <linux/sysctl.h> ++ ++#ifdef CONFIG_PAX_HAVE_ACL_FLAGS ++void ++pax_set_initial_flags(struct linux_binprm *bprm) ++{ ++ return; ++} ++#endif ++ ++#ifdef CONFIG_SYSCTL ++__u32 ++gr_handle_sysctl(const struct ctl_table * table, const int op) ++{ ++ return 0; ++} ++#endif ++ ++#ifdef CONFIG_TASKSTATS ++int gr_is_taskstats_denied(int pid) ++{ ++ return 0; ++} ++#endif ++ ++int ++gr_acl_is_enabled(void) ++{ ++ return 0; ++} ++ ++void ++gr_handle_proc_create(const struct dentry *dentry, const struct inode *inode) ++{ ++ return; ++} ++ ++int ++gr_handle_rawio(const struct inode *inode) ++{ ++ return 0; ++} ++ ++void ++gr_acl_handle_psacct(struct task_struct *task, const long code) ++{ ++ return; ++} ++ ++int ++gr_handle_ptrace(struct task_struct *task, const long request) ++{ ++ return 0; ++} ++ ++int ++gr_handle_proc_ptrace(struct task_struct *task) ++{ ++ return 0; ++} ++ ++void ++gr_learn_resource(const struct task_struct *task, ++ const int res, const unsigned long wanted, const int gt) ++{ ++ return; ++} ++ ++int ++gr_set_acls(const int type) ++{ ++ return 0; ++} ++ ++int ++gr_check_hidden_task(const struct task_struct *tsk) ++{ ++ return 0; ++} ++ ++int ++gr_check_protected_task(const struct task_struct *task) ++{ ++ return 0; ++} ++ ++int ++gr_check_protected_task_fowner(struct pid *pid, enum pid_type type) ++{ ++ return 0; ++} ++ ++void ++gr_copy_label(struct task_struct *tsk) ++{ ++ return; ++} ++ ++void ++gr_set_pax_flags(struct task_struct *task) ++{ ++ return; ++} ++ ++int ++gr_set_proc_label(const struct dentry *dentry, const struct vfsmount *mnt, ++ const int unsafe_share) ++{ ++ return 0; ++} ++ ++void ++gr_handle_delete(const ino_t ino, const dev_t dev) ++{ ++ return; ++} ++ ++void ++gr_handle_create(const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++ return; ++} ++ ++void ++gr_handle_crash(struct task_struct *task, const int sig) ++{ ++ return; ++} ++ ++int ++gr_check_crash_exec(const struct file *filp) ++{ ++ return 0; ++} ++ ++int ++gr_check_crash_uid(const uid_t uid) ++{ ++ return 0; ++} ++ ++void ++gr_handle_rename(struct inode *old_dir, struct inode *new_dir, ++ struct dentry *old_dentry, ++ struct dentry *new_dentry, ++ struct vfsmount *mnt, const __u8 replace) ++{ ++ return; ++} ++ ++int ++gr_search_socket(const int family, const int type, const int protocol) ++{ ++ return 1; ++} ++ ++int ++gr_search_connectbind(const int mode, const struct socket *sock, ++ const struct sockaddr_in *addr) ++{ ++ return 0; ++} ++ ++void ++gr_handle_alertkill(struct task_struct *task) ++{ ++ return; ++} ++ ++__u32 ++gr_acl_handle_execve(const struct dentry * dentry, const struct vfsmount * mnt) ++{ ++ return 1; ++} ++ ++__u32 ++gr_acl_handle_hidden_file(const struct dentry * dentry, ++ const struct vfsmount * mnt) ++{ ++ return 1; ++} ++ ++__u32 ++gr_acl_handle_open(const struct dentry * dentry, const struct vfsmount * mnt, ++ int acc_mode) ++{ ++ return 1; ++} ++ ++__u32 ++gr_acl_handle_rmdir(const struct dentry * dentry, const struct vfsmount * mnt) ++{ ++ return 1; ++} ++ ++__u32 ++gr_acl_handle_unlink(const struct dentry * dentry, const struct vfsmount * mnt) ++{ ++ return 1; ++} ++ ++int ++gr_acl_handle_mmap(const struct file *file, const unsigned long prot, ++ unsigned int *vm_flags) ++{ ++ return 1; ++} ++ ++__u32 ++gr_acl_handle_truncate(const struct dentry * dentry, ++ const struct vfsmount * mnt) ++{ ++ return 1; ++} ++ ++__u32 ++gr_acl_handle_utime(const struct dentry * dentry, const struct vfsmount * mnt) ++{ ++ return 1; ++} ++ ++__u32 ++gr_acl_handle_access(const struct dentry * dentry, ++ const struct vfsmount * mnt, const int fmode) ++{ ++ return 1; ++} ++ ++__u32 ++gr_acl_handle_chmod(const struct dentry * dentry, const struct vfsmount * mnt, ++ umode_t *mode) ++{ ++ return 1; ++} ++ ++__u32 ++gr_acl_handle_chown(const struct dentry * dentry, const struct vfsmount * mnt) ++{ ++ return 1; ++} ++ ++__u32 ++gr_acl_handle_setxattr(const struct dentry * dentry, const struct vfsmount * mnt) ++{ ++ return 1; ++} ++ ++void ++grsecurity_init(void) ++{ ++ return; ++} ++ ++umode_t gr_acl_umask(void) ++{ ++ return 0; ++} ++ ++__u32 ++gr_acl_handle_mknod(const struct dentry * new_dentry, ++ const struct dentry * parent_dentry, ++ const struct vfsmount * parent_mnt, ++ const int mode) ++{ ++ return 1; ++} ++ ++__u32 ++gr_acl_handle_mkdir(const struct dentry * new_dentry, ++ const struct dentry * parent_dentry, ++ const struct vfsmount * parent_mnt) ++{ ++ return 1; ++} ++ ++__u32 ++gr_acl_handle_symlink(const struct dentry * new_dentry, ++ const struct dentry * parent_dentry, ++ const struct vfsmount * parent_mnt, const char *from) ++{ ++ return 1; ++} ++ ++__u32 ++gr_acl_handle_link(const struct dentry * new_dentry, ++ const struct dentry * parent_dentry, ++ const struct vfsmount * parent_mnt, ++ const struct dentry * old_dentry, ++ const struct vfsmount * old_mnt, const char *to) ++{ ++ return 1; ++} ++ ++int ++gr_acl_handle_rename(const struct dentry *new_dentry, ++ const struct dentry *parent_dentry, ++ const struct vfsmount *parent_mnt, ++ const struct dentry *old_dentry, ++ const struct inode *old_parent_inode, ++ const struct vfsmount *old_mnt, const char *newname) ++{ ++ return 0; ++} ++ ++int ++gr_acl_handle_filldir(const struct file *file, const char *name, ++ const int namelen, const ino_t ino) ++{ ++ return 1; ++} ++ ++int ++gr_handle_shmat(const pid_t shm_cprid, const pid_t shm_lapid, ++ const time_t shm_createtime, const uid_t cuid, const int shmid) ++{ ++ return 1; ++} ++ ++int ++gr_search_bind(const struct socket *sock, const struct sockaddr_in *addr) ++{ ++ return 0; ++} ++ ++int ++gr_search_accept(const struct socket *sock) ++{ ++ return 0; ++} ++ ++int ++gr_search_listen(const struct socket *sock) ++{ ++ return 0; ++} ++ ++int ++gr_search_connect(const struct socket *sock, const struct sockaddr_in *addr) ++{ ++ return 0; ++} ++ ++__u32 ++gr_acl_handle_unix(const struct dentry * dentry, const struct vfsmount * mnt) ++{ ++ return 1; ++} ++ ++__u32 ++gr_acl_handle_creat(const struct dentry * dentry, ++ const struct dentry * p_dentry, ++ const struct vfsmount * p_mnt, int open_flags, int acc_mode, ++ const int imode) ++{ ++ return 1; ++} ++ ++void ++gr_acl_handle_exit(void) ++{ ++ return; ++} ++ ++int ++gr_acl_handle_mprotect(const struct file *file, const unsigned long prot) ++{ ++ return 1; ++} ++ ++void ++gr_set_role_label(const uid_t uid, const gid_t gid) ++{ ++ return; ++} ++ ++int ++gr_acl_handle_procpidmem(const struct task_struct *task) ++{ ++ return 0; ++} ++ ++int ++gr_search_udp_recvmsg(const struct sock *sk, const struct sk_buff *skb) ++{ ++ return 0; ++} ++ ++int ++gr_search_udp_sendmsg(const struct sock *sk, const struct sockaddr_in *addr) ++{ ++ return 0; ++} ++ ++void ++gr_set_kernel_label(struct task_struct *task) ++{ ++ return; ++} ++ ++int ++gr_check_user_change(int real, int effective, int fs) ++{ ++ return 0; ++} ++ ++int ++gr_check_group_change(int real, int effective, int fs) ++{ ++ return 0; ++} ++ ++int gr_acl_enable_at_secure(void) ++{ ++ return 0; ++} ++ ++dev_t gr_get_dev_from_dentry(struct dentry *dentry) ++{ ++ return dentry->d_inode->i_sb->s_dev; ++} ++ ++EXPORT_SYMBOL(gr_learn_resource); ++EXPORT_SYMBOL(gr_set_kernel_label); ++#ifdef CONFIG_SECURITY ++EXPORT_SYMBOL(gr_check_user_change); ++EXPORT_SYMBOL(gr_check_group_change); ++#endif +diff --git a/grsecurity/grsec_exec.c b/grsecurity/grsec_exec.c +new file mode 100644 +index 0000000..abfa971 +--- /dev/null ++++ b/grsecurity/grsec_exec.c +@@ -0,0 +1,174 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/file.h> ++#include <linux/binfmts.h> ++#include <linux/fs.h> ++#include <linux/types.h> ++#include <linux/grdefs.h> ++#include <linux/grsecurity.h> ++#include <linux/grinternal.h> ++#include <linux/capability.h> ++#include <linux/module.h> ++ ++#include <asm/uaccess.h> ++ ++#ifdef CONFIG_GRKERNSEC_EXECLOG ++static char gr_exec_arg_buf[132]; ++static DEFINE_MUTEX(gr_exec_arg_mutex); ++#endif ++ ++extern const char __user *get_user_arg_ptr(struct user_arg_ptr argv, int nr); ++ ++void ++gr_handle_exec_args(struct linux_binprm *bprm, struct user_arg_ptr argv) ++{ ++#ifdef CONFIG_GRKERNSEC_EXECLOG ++ char *grarg = gr_exec_arg_buf; ++ unsigned int i, x, execlen = 0; ++ char c; ++ ++ if (!((grsec_enable_execlog && grsec_enable_group && ++ in_group_p(grsec_audit_gid)) ++ || (grsec_enable_execlog && !grsec_enable_group))) ++ return; ++ ++ mutex_lock(&gr_exec_arg_mutex); ++ memset(grarg, 0, sizeof(gr_exec_arg_buf)); ++ ++ for (i = 0; i < bprm->argc && execlen < 128; i++) { ++ const char __user *p; ++ unsigned int len; ++ ++ p = get_user_arg_ptr(argv, i); ++ if (IS_ERR(p)) ++ goto log; ++ ++ len = strnlen_user(p, 128 - execlen); ++ if (len > 128 - execlen) ++ len = 128 - execlen; ++ else if (len > 0) ++ len--; ++ if (copy_from_user(grarg + execlen, p, len)) ++ goto log; ++ ++ /* rewrite unprintable characters */ ++ for (x = 0; x < len; x++) { ++ c = *(grarg + execlen + x); ++ if (c < 32 || c > 126) ++ *(grarg + execlen + x) = ' '; ++ } ++ ++ execlen += len; ++ *(grarg + execlen) = ' '; ++ *(grarg + execlen + 1) = '\0'; ++ execlen++; ++ } ++ ++ log: ++ gr_log_fs_str(GR_DO_AUDIT, GR_EXEC_AUDIT_MSG, bprm->file->f_path.dentry, ++ bprm->file->f_path.mnt, grarg); ++ mutex_unlock(&gr_exec_arg_mutex); ++#endif ++ return; ++} ++ ++#ifdef CONFIG_GRKERNSEC ++extern int gr_acl_is_capable(const int cap); ++extern int gr_acl_is_capable_nolog(const int cap); ++extern int gr_task_acl_is_capable(const struct task_struct *task, const struct cred *cred, const int cap); ++extern int gr_task_acl_is_capable_nolog(const struct task_struct *task, const int cap); ++extern int gr_chroot_is_capable(const int cap); ++extern int gr_chroot_is_capable_nolog(const int cap); ++extern int gr_task_chroot_is_capable(const struct task_struct *task, const struct cred *cred, const int cap); ++extern int gr_task_chroot_is_capable_nolog(const struct task_struct *task, const int cap); ++#endif ++ ++const char *captab_log[] = { ++ "CAP_CHOWN", ++ "CAP_DAC_OVERRIDE", ++ "CAP_DAC_READ_SEARCH", ++ "CAP_FOWNER", ++ "CAP_FSETID", ++ "CAP_KILL", ++ "CAP_SETGID", ++ "CAP_SETUID", ++ "CAP_SETPCAP", ++ "CAP_LINUX_IMMUTABLE", ++ "CAP_NET_BIND_SERVICE", ++ "CAP_NET_BROADCAST", ++ "CAP_NET_ADMIN", ++ "CAP_NET_RAW", ++ "CAP_IPC_LOCK", ++ "CAP_IPC_OWNER", ++ "CAP_SYS_MODULE", ++ "CAP_SYS_RAWIO", ++ "CAP_SYS_CHROOT", ++ "CAP_SYS_PTRACE", ++ "CAP_SYS_PACCT", ++ "CAP_SYS_ADMIN", ++ "CAP_SYS_BOOT", ++ "CAP_SYS_NICE", ++ "CAP_SYS_RESOURCE", ++ "CAP_SYS_TIME", ++ "CAP_SYS_TTY_CONFIG", ++ "CAP_MKNOD", ++ "CAP_LEASE", ++ "CAP_AUDIT_WRITE", ++ "CAP_AUDIT_CONTROL", ++ "CAP_SETFCAP", ++ "CAP_MAC_OVERRIDE", ++ "CAP_MAC_ADMIN", ++ "CAP_SYSLOG", ++ "CAP_WAKE_ALARM" ++}; ++ ++int captab_log_entries = sizeof(captab_log)/sizeof(captab_log[0]); ++ ++int gr_is_capable(const int cap) ++{ ++#ifdef CONFIG_GRKERNSEC ++ if (gr_acl_is_capable(cap) && gr_chroot_is_capable(cap)) ++ return 1; ++ return 0; ++#else ++ return 1; ++#endif ++} ++ ++int gr_task_is_capable(const struct task_struct *task, const struct cred *cred, const int cap) ++{ ++#ifdef CONFIG_GRKERNSEC ++ if (gr_task_acl_is_capable(task, cred, cap) && gr_task_chroot_is_capable(task, cred, cap)) ++ return 1; ++ return 0; ++#else ++ return 1; ++#endif ++} ++ ++int gr_is_capable_nolog(const int cap) ++{ ++#ifdef CONFIG_GRKERNSEC ++ if (gr_acl_is_capable_nolog(cap) && gr_chroot_is_capable_nolog(cap)) ++ return 1; ++ return 0; ++#else ++ return 1; ++#endif ++} ++ ++int gr_task_is_capable_nolog(const struct task_struct *task, const int cap) ++{ ++#ifdef CONFIG_GRKERNSEC ++ if (gr_task_acl_is_capable_nolog(task, cap) && gr_task_chroot_is_capable_nolog(task, cap)) ++ return 1; ++ return 0; ++#else ++ return 1; ++#endif ++} ++ ++EXPORT_SYMBOL(gr_is_capable); ++EXPORT_SYMBOL(gr_is_capable_nolog); ++EXPORT_SYMBOL(gr_task_is_capable); ++EXPORT_SYMBOL(gr_task_is_capable_nolog); +diff --git a/grsecurity/grsec_fifo.c b/grsecurity/grsec_fifo.c +new file mode 100644 +index 0000000..d3ee748 +--- /dev/null ++++ b/grsecurity/grsec_fifo.c +@@ -0,0 +1,24 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/fs.h> ++#include <linux/file.h> ++#include <linux/grinternal.h> ++ ++int ++gr_handle_fifo(const struct dentry *dentry, const struct vfsmount *mnt, ++ const struct dentry *dir, const int flag, const int acc_mode) ++{ ++#ifdef CONFIG_GRKERNSEC_FIFO ++ const struct cred *cred = current_cred(); ++ ++ if (grsec_enable_fifo && S_ISFIFO(dentry->d_inode->i_mode) && ++ !(flag & O_EXCL) && (dir->d_inode->i_mode & S_ISVTX) && ++ (dentry->d_inode->i_uid != dir->d_inode->i_uid) && ++ (cred->fsuid != dentry->d_inode->i_uid)) { ++ if (!inode_permission(dentry->d_inode, acc_mode)) ++ gr_log_fs_int2(GR_DONT_AUDIT, GR_FIFO_MSG, dentry, mnt, dentry->d_inode->i_uid, dentry->d_inode->i_gid); ++ return -EACCES; ++ } ++#endif ++ return 0; ++} +diff --git a/grsecurity/grsec_fork.c b/grsecurity/grsec_fork.c +new file mode 100644 +index 0000000..8ca18bf +--- /dev/null ++++ b/grsecurity/grsec_fork.c +@@ -0,0 +1,23 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/grsecurity.h> ++#include <linux/grinternal.h> ++#include <linux/errno.h> ++ ++void ++gr_log_forkfail(const int retval) ++{ ++#ifdef CONFIG_GRKERNSEC_FORKFAIL ++ if (grsec_enable_forkfail && (retval == -EAGAIN || retval == -ENOMEM)) { ++ switch (retval) { ++ case -EAGAIN: ++ gr_log_str(GR_DONT_AUDIT, GR_FAILFORK_MSG, "EAGAIN"); ++ break; ++ case -ENOMEM: ++ gr_log_str(GR_DONT_AUDIT, GR_FAILFORK_MSG, "ENOMEM"); ++ break; ++ } ++ } ++#endif ++ return; ++} +diff --git a/grsecurity/grsec_init.c b/grsecurity/grsec_init.c +new file mode 100644 +index 0000000..05a6015 +--- /dev/null ++++ b/grsecurity/grsec_init.c +@@ -0,0 +1,283 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/mm.h> ++#include <linux/gracl.h> ++#include <linux/slab.h> ++#include <linux/vmalloc.h> ++#include <linux/percpu.h> ++#include <linux/module.h> ++ ++int grsec_enable_ptrace_readexec; ++int grsec_enable_setxid; ++int grsec_enable_symlinkown; ++int grsec_symlinkown_gid; ++int grsec_enable_brute; ++int grsec_enable_link; ++int grsec_enable_dmesg; ++int grsec_enable_harden_ptrace; ++int grsec_enable_fifo; ++int grsec_enable_execlog; ++int grsec_enable_signal; ++int grsec_enable_forkfail; ++int grsec_enable_audit_ptrace; ++int grsec_enable_time; ++int grsec_enable_audit_textrel; ++int grsec_enable_group; ++int grsec_audit_gid; ++int grsec_enable_chdir; ++int grsec_enable_mount; ++int grsec_enable_rofs; ++int grsec_enable_chroot_findtask; ++int grsec_enable_chroot_mount; ++int grsec_enable_chroot_shmat; ++int grsec_enable_chroot_fchdir; ++int grsec_enable_chroot_double; ++int grsec_enable_chroot_pivot; ++int grsec_enable_chroot_chdir; ++int grsec_enable_chroot_chmod; ++int grsec_enable_chroot_mknod; ++int grsec_enable_chroot_nice; ++int grsec_enable_chroot_execlog; ++int grsec_enable_chroot_caps; ++int grsec_enable_chroot_sysctl; ++int grsec_enable_chroot_unix; ++int grsec_enable_tpe; ++int grsec_tpe_gid; ++int grsec_enable_blackhole; ++#ifdef CONFIG_IPV6_MODULE ++EXPORT_SYMBOL(grsec_enable_blackhole); ++#endif ++int grsec_lastack_retries; ++int grsec_enable_tpe_all; ++int grsec_enable_tpe_invert; ++int grsec_enable_socket_all; ++int grsec_socket_all_gid; ++int grsec_enable_socket_client; ++int grsec_socket_client_gid; ++int grsec_enable_socket_server; ++int grsec_socket_server_gid; ++int grsec_resource_logging; ++int grsec_disable_privio; ++int grsec_enable_log_rwxmaps; ++int grsec_lock; ++ ++DEFINE_SPINLOCK(grsec_alert_lock); ++unsigned long grsec_alert_wtime = 0; ++unsigned long grsec_alert_fyet = 0; ++ ++DEFINE_SPINLOCK(grsec_audit_lock); ++ ++DEFINE_RWLOCK(grsec_exec_file_lock); ++ ++char *gr_shared_page[4]; ++ ++char *gr_alert_log_fmt; ++char *gr_audit_log_fmt; ++char *gr_alert_log_buf; ++char *gr_audit_log_buf; ++ ++extern struct gr_arg *gr_usermode; ++extern unsigned char *gr_system_salt; ++extern unsigned char *gr_system_sum; ++ ++void __init ++grsecurity_init(void) ++{ ++ int j; ++ /* create the per-cpu shared pages */ ++ ++#ifdef CONFIG_X86 ++ memset((char *)(0x41a + PAGE_OFFSET), 0, 36); ++#endif ++ ++ for (j = 0; j < 4; j++) { ++ gr_shared_page[j] = (char *)__alloc_percpu(PAGE_SIZE, __alignof__(unsigned long long)); ++ if (gr_shared_page[j] == NULL) { ++ panic("Unable to allocate grsecurity shared page"); ++ return; ++ } ++ } ++ ++ /* allocate log buffers */ ++ gr_alert_log_fmt = kmalloc(512, GFP_KERNEL); ++ if (!gr_alert_log_fmt) { ++ panic("Unable to allocate grsecurity alert log format buffer"); ++ return; ++ } ++ gr_audit_log_fmt = kmalloc(512, GFP_KERNEL); ++ if (!gr_audit_log_fmt) { ++ panic("Unable to allocate grsecurity audit log format buffer"); ++ return; ++ } ++ gr_alert_log_buf = (char *) get_zeroed_page(GFP_KERNEL); ++ if (!gr_alert_log_buf) { ++ panic("Unable to allocate grsecurity alert log buffer"); ++ return; ++ } ++ gr_audit_log_buf = (char *) get_zeroed_page(GFP_KERNEL); ++ if (!gr_audit_log_buf) { ++ panic("Unable to allocate grsecurity audit log buffer"); ++ return; ++ } ++ ++ /* allocate memory for authentication structure */ ++ gr_usermode = kmalloc(sizeof(struct gr_arg), GFP_KERNEL); ++ gr_system_salt = kmalloc(GR_SALT_LEN, GFP_KERNEL); ++ gr_system_sum = kmalloc(GR_SHA_LEN, GFP_KERNEL); ++ ++ if (!gr_usermode || !gr_system_salt || !gr_system_sum) { ++ panic("Unable to allocate grsecurity authentication structure"); ++ return; ++ } ++ ++ ++#ifdef CONFIG_GRKERNSEC_IO ++#if !defined(CONFIG_GRKERNSEC_SYSCTL_DISTRO) ++ grsec_disable_privio = 1; ++#elif defined(CONFIG_GRKERNSEC_SYSCTL_ON) ++ grsec_disable_privio = 1; ++#else ++ grsec_disable_privio = 0; ++#endif ++#endif ++ ++#ifdef CONFIG_GRKERNSEC_TPE_INVERT ++ /* for backward compatibility, tpe_invert always defaults to on if ++ enabled in the kernel ++ */ ++ grsec_enable_tpe_invert = 1; ++#endif ++ ++#if !defined(CONFIG_GRKERNSEC_SYSCTL) || defined(CONFIG_GRKERNSEC_SYSCTL_ON) ++#ifndef CONFIG_GRKERNSEC_SYSCTL ++ grsec_lock = 1; ++#endif ++ ++#ifdef CONFIG_GRKERNSEC_AUDIT_TEXTREL ++ grsec_enable_audit_textrel = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG ++ grsec_enable_log_rwxmaps = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_AUDIT_GROUP ++ grsec_enable_group = 1; ++ grsec_audit_gid = CONFIG_GRKERNSEC_AUDIT_GID; ++#endif ++#ifdef CONFIG_GRKERNSEC_PTRACE_READEXEC ++ grsec_enable_ptrace_readexec = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_AUDIT_CHDIR ++ grsec_enable_chdir = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_HARDEN_PTRACE ++ grsec_enable_harden_ptrace = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT ++ grsec_enable_mount = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_LINK ++ grsec_enable_link = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_BRUTE ++ grsec_enable_brute = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_DMESG ++ grsec_enable_dmesg = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++ grsec_enable_blackhole = 1; ++ grsec_lastack_retries = 4; ++#endif ++#ifdef CONFIG_GRKERNSEC_FIFO ++ grsec_enable_fifo = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_EXECLOG ++ grsec_enable_execlog = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_SETXID ++ grsec_enable_setxid = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_SIGNAL ++ grsec_enable_signal = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_FORKFAIL ++ grsec_enable_forkfail = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_TIME ++ grsec_enable_time = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_RESLOG ++ grsec_resource_logging = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK ++ grsec_enable_chroot_findtask = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_UNIX ++ grsec_enable_chroot_unix = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_MOUNT ++ grsec_enable_chroot_mount = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_FCHDIR ++ grsec_enable_chroot_fchdir = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_SHMAT ++ grsec_enable_chroot_shmat = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_AUDIT_PTRACE ++ grsec_enable_audit_ptrace = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_DOUBLE ++ grsec_enable_chroot_double = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_PIVOT ++ grsec_enable_chroot_pivot = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_CHDIR ++ grsec_enable_chroot_chdir = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_CHMOD ++ grsec_enable_chroot_chmod = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_MKNOD ++ grsec_enable_chroot_mknod = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_NICE ++ grsec_enable_chroot_nice = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_EXECLOG ++ grsec_enable_chroot_execlog = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS ++ grsec_enable_chroot_caps = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_SYSCTL ++ grsec_enable_chroot_sysctl = 1; ++#endif ++#ifdef CONFIG_GRKERNSEC_SYMLINKOWN ++ grsec_enable_symlinkown = 1; ++ grsec_symlinkown_gid = CONFIG_GRKERNSEC_SYMLINKOWN_GID; ++#endif ++#ifdef CONFIG_GRKERNSEC_TPE ++ grsec_enable_tpe = 1; ++ grsec_tpe_gid = CONFIG_GRKERNSEC_TPE_GID; ++#ifdef CONFIG_GRKERNSEC_TPE_ALL ++ grsec_enable_tpe_all = 1; ++#endif ++#endif ++#ifdef CONFIG_GRKERNSEC_SOCKET_ALL ++ grsec_enable_socket_all = 1; ++ grsec_socket_all_gid = CONFIG_GRKERNSEC_SOCKET_ALL_GID; ++#endif ++#ifdef CONFIG_GRKERNSEC_SOCKET_CLIENT ++ grsec_enable_socket_client = 1; ++ grsec_socket_client_gid = CONFIG_GRKERNSEC_SOCKET_CLIENT_GID; ++#endif ++#ifdef CONFIG_GRKERNSEC_SOCKET_SERVER ++ grsec_enable_socket_server = 1; ++ grsec_socket_server_gid = CONFIG_GRKERNSEC_SOCKET_SERVER_GID; ++#endif ++#endif ++ ++ return; ++} +diff --git a/grsecurity/grsec_link.c b/grsecurity/grsec_link.c +new file mode 100644 +index 0000000..35a96d1 +--- /dev/null ++++ b/grsecurity/grsec_link.c +@@ -0,0 +1,59 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/fs.h> ++#include <linux/file.h> ++#include <linux/grinternal.h> ++ ++int gr_handle_symlink_owner(const struct path *link, const struct inode *target) ++{ ++#ifdef CONFIG_GRKERNSEC_SYMLINKOWN ++ const struct inode *link_inode = link->dentry->d_inode; ++ ++ if (grsec_enable_symlinkown && in_group_p(grsec_symlinkown_gid) && ++ /* ignore root-owned links, e.g. /proc/self */ ++ link_inode->i_uid && ++ link_inode->i_uid != target->i_uid) { ++ gr_log_fs_int2(GR_DONT_AUDIT, GR_SYMLINKOWNER_MSG, link->dentry, link->mnt, link_inode->i_uid, target->i_uid); ++ return 1; ++ } ++#endif ++ return 0; ++} ++ ++int ++gr_handle_follow_link(const struct inode *parent, ++ const struct inode *inode, ++ const struct dentry *dentry, const struct vfsmount *mnt) ++{ ++#ifdef CONFIG_GRKERNSEC_LINK ++ const struct cred *cred = current_cred(); ++ ++ if (grsec_enable_link && S_ISLNK(inode->i_mode) && ++ (parent->i_mode & S_ISVTX) && (parent->i_uid != inode->i_uid) && ++ (parent->i_mode & S_IWOTH) && (cred->fsuid != inode->i_uid)) { ++ gr_log_fs_int2(GR_DONT_AUDIT, GR_SYMLINK_MSG, dentry, mnt, inode->i_uid, inode->i_gid); ++ return -EACCES; ++ } ++#endif ++ return 0; ++} ++ ++int ++gr_handle_hardlink(const struct dentry *dentry, ++ const struct vfsmount *mnt, ++ struct inode *inode, const int mode, const char *to) ++{ ++#ifdef CONFIG_GRKERNSEC_LINK ++ const struct cred *cred = current_cred(); ++ ++ if (grsec_enable_link && cred->fsuid != inode->i_uid && ++ (!S_ISREG(mode) || (mode & S_ISUID) || ++ ((mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP)) || ++ (inode_permission(inode, MAY_READ | MAY_WRITE))) && ++ !capable(CAP_FOWNER) && cred->uid) { ++ gr_log_fs_int2_str(GR_DONT_AUDIT, GR_HARDLINK_MSG, dentry, mnt, inode->i_uid, inode->i_gid, to); ++ return -EPERM; ++ } ++#endif ++ return 0; ++} +diff --git a/grsecurity/grsec_log.c b/grsecurity/grsec_log.c +new file mode 100644 +index 0000000..a45d2e9 +--- /dev/null ++++ b/grsecurity/grsec_log.c +@@ -0,0 +1,322 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/file.h> ++#include <linux/tty.h> ++#include <linux/fs.h> ++#include <linux/grinternal.h> ++ ++#ifdef CONFIG_TREE_PREEMPT_RCU ++#define DISABLE_PREEMPT() preempt_disable() ++#define ENABLE_PREEMPT() preempt_enable() ++#else ++#define DISABLE_PREEMPT() ++#define ENABLE_PREEMPT() ++#endif ++ ++#define BEGIN_LOCKS(x) \ ++ DISABLE_PREEMPT(); \ ++ rcu_read_lock(); \ ++ read_lock(&tasklist_lock); \ ++ read_lock(&grsec_exec_file_lock); \ ++ if (x != GR_DO_AUDIT) \ ++ spin_lock(&grsec_alert_lock); \ ++ else \ ++ spin_lock(&grsec_audit_lock) ++ ++#define END_LOCKS(x) \ ++ if (x != GR_DO_AUDIT) \ ++ spin_unlock(&grsec_alert_lock); \ ++ else \ ++ spin_unlock(&grsec_audit_lock); \ ++ read_unlock(&grsec_exec_file_lock); \ ++ read_unlock(&tasklist_lock); \ ++ rcu_read_unlock(); \ ++ ENABLE_PREEMPT(); \ ++ if (x == GR_DONT_AUDIT) \ ++ gr_handle_alertkill(current) ++ ++enum { ++ FLOODING, ++ NO_FLOODING ++}; ++ ++extern char *gr_alert_log_fmt; ++extern char *gr_audit_log_fmt; ++extern char *gr_alert_log_buf; ++extern char *gr_audit_log_buf; ++ ++static int gr_log_start(int audit) ++{ ++ char *loglevel = (audit == GR_DO_AUDIT) ? KERN_INFO : KERN_ALERT; ++ char *fmt = (audit == GR_DO_AUDIT) ? gr_audit_log_fmt : gr_alert_log_fmt; ++ char *buf = (audit == GR_DO_AUDIT) ? gr_audit_log_buf : gr_alert_log_buf; ++#if (CONFIG_GRKERNSEC_FLOODTIME > 0 && CONFIG_GRKERNSEC_FLOODBURST > 0) ++ unsigned long curr_secs = get_seconds(); ++ ++ if (audit == GR_DO_AUDIT) ++ goto set_fmt; ++ ++ if (!grsec_alert_wtime || time_after(curr_secs, grsec_alert_wtime + CONFIG_GRKERNSEC_FLOODTIME)) { ++ grsec_alert_wtime = curr_secs; ++ grsec_alert_fyet = 0; ++ } else if (time_before_eq(curr_secs, grsec_alert_wtime + CONFIG_GRKERNSEC_FLOODTIME) ++ && (grsec_alert_fyet < CONFIG_GRKERNSEC_FLOODBURST)) { ++ grsec_alert_fyet++; ++ } else if (grsec_alert_fyet == CONFIG_GRKERNSEC_FLOODBURST) { ++ grsec_alert_wtime = curr_secs; ++ grsec_alert_fyet++; ++ printk(KERN_ALERT "grsec: more alerts, logging disabled for %d seconds\n", CONFIG_GRKERNSEC_FLOODTIME); ++ return FLOODING; ++ } ++ else return FLOODING; ++ ++set_fmt: ++#endif ++ memset(buf, 0, PAGE_SIZE); ++ if (current->signal->curr_ip && gr_acl_is_enabled()) { ++ sprintf(fmt, "%s%s", loglevel, "grsec: From %pI4: (%.64s:%c:%.950s) "); ++ snprintf(buf, PAGE_SIZE - 1, fmt, ¤t->signal->curr_ip, current->role->rolename, gr_roletype_to_char(), current->acl->filename); ++ } else if (current->signal->curr_ip) { ++ sprintf(fmt, "%s%s", loglevel, "grsec: From %pI4: "); ++ snprintf(buf, PAGE_SIZE - 1, fmt, ¤t->signal->curr_ip); ++ } else if (gr_acl_is_enabled()) { ++ sprintf(fmt, "%s%s", loglevel, "grsec: (%.64s:%c:%.950s) "); ++ snprintf(buf, PAGE_SIZE - 1, fmt, current->role->rolename, gr_roletype_to_char(), current->acl->filename); ++ } else { ++ sprintf(fmt, "%s%s", loglevel, "grsec: "); ++ strcpy(buf, fmt); ++ } ++ ++ return NO_FLOODING; ++} ++ ++static void gr_log_middle(int audit, const char *msg, va_list ap) ++ __attribute__ ((format (printf, 2, 0))); ++ ++static void gr_log_middle(int audit, const char *msg, va_list ap) ++{ ++ char *buf = (audit == GR_DO_AUDIT) ? gr_audit_log_buf : gr_alert_log_buf; ++ unsigned int len = strlen(buf); ++ ++ vsnprintf(buf + len, PAGE_SIZE - len - 1, msg, ap); ++ ++ return; ++} ++ ++static void gr_log_middle_varargs(int audit, const char *msg, ...) ++ __attribute__ ((format (printf, 2, 3))); ++ ++static void gr_log_middle_varargs(int audit, const char *msg, ...) ++{ ++ char *buf = (audit == GR_DO_AUDIT) ? gr_audit_log_buf : gr_alert_log_buf; ++ unsigned int len = strlen(buf); ++ va_list ap; ++ ++ va_start(ap, msg); ++ vsnprintf(buf + len, PAGE_SIZE - len - 1, msg, ap); ++ va_end(ap); ++ ++ return; ++} ++ ++static void gr_log_end(int audit, int append_default) ++{ ++ char *buf = (audit == GR_DO_AUDIT) ? gr_audit_log_buf : gr_alert_log_buf; ++ ++ if (append_default) { ++ unsigned int len = strlen(buf); ++ snprintf(buf + len, PAGE_SIZE - len - 1, DEFAULTSECMSG, DEFAULTSECARGS(current, current_cred(), __task_cred(current->real_parent))); ++ } ++ ++ printk("%s\n", buf); ++ ++ return; ++} ++ ++void gr_log_varargs(int audit, const char *msg, int argtypes, ...) ++{ ++ int logtype; ++ char *result = (audit == GR_DO_AUDIT) ? "successful" : "denied"; ++ char *str1 = NULL, *str2 = NULL, *str3 = NULL; ++ void *voidptr = NULL; ++ int num1 = 0, num2 = 0; ++ unsigned long ulong1 = 0, ulong2 = 0; ++ struct dentry *dentry = NULL; ++ struct vfsmount *mnt = NULL; ++ struct file *file = NULL; ++ struct task_struct *task = NULL; ++ const struct cred *cred, *pcred; ++ va_list ap; ++ ++ BEGIN_LOCKS(audit); ++ logtype = gr_log_start(audit); ++ if (logtype == FLOODING) { ++ END_LOCKS(audit); ++ return; ++ } ++ va_start(ap, argtypes); ++ switch (argtypes) { ++ case GR_TTYSNIFF: ++ task = va_arg(ap, struct task_struct *); ++ gr_log_middle_varargs(audit, msg, &task->signal->curr_ip, gr_task_fullpath0(task), task->comm, task->pid, gr_parent_task_fullpath0(task), task->real_parent->comm, task->real_parent->pid); ++ break; ++ case GR_SYSCTL_HIDDEN: ++ str1 = va_arg(ap, char *); ++ gr_log_middle_varargs(audit, msg, result, str1); ++ break; ++ case GR_RBAC: ++ dentry = va_arg(ap, struct dentry *); ++ mnt = va_arg(ap, struct vfsmount *); ++ gr_log_middle_varargs(audit, msg, result, gr_to_filename(dentry, mnt)); ++ break; ++ case GR_RBAC_STR: ++ dentry = va_arg(ap, struct dentry *); ++ mnt = va_arg(ap, struct vfsmount *); ++ str1 = va_arg(ap, char *); ++ gr_log_middle_varargs(audit, msg, result, gr_to_filename(dentry, mnt), str1); ++ break; ++ case GR_STR_RBAC: ++ str1 = va_arg(ap, char *); ++ dentry = va_arg(ap, struct dentry *); ++ mnt = va_arg(ap, struct vfsmount *); ++ gr_log_middle_varargs(audit, msg, result, str1, gr_to_filename(dentry, mnt)); ++ break; ++ case GR_RBAC_MODE2: ++ dentry = va_arg(ap, struct dentry *); ++ mnt = va_arg(ap, struct vfsmount *); ++ str1 = va_arg(ap, char *); ++ str2 = va_arg(ap, char *); ++ gr_log_middle_varargs(audit, msg, result, gr_to_filename(dentry, mnt), str1, str2); ++ break; ++ case GR_RBAC_MODE3: ++ dentry = va_arg(ap, struct dentry *); ++ mnt = va_arg(ap, struct vfsmount *); ++ str1 = va_arg(ap, char *); ++ str2 = va_arg(ap, char *); ++ str3 = va_arg(ap, char *); ++ gr_log_middle_varargs(audit, msg, result, gr_to_filename(dentry, mnt), str1, str2, str3); ++ break; ++ case GR_FILENAME: ++ dentry = va_arg(ap, struct dentry *); ++ mnt = va_arg(ap, struct vfsmount *); ++ gr_log_middle_varargs(audit, msg, gr_to_filename(dentry, mnt)); ++ break; ++ case GR_STR_FILENAME: ++ str1 = va_arg(ap, char *); ++ dentry = va_arg(ap, struct dentry *); ++ mnt = va_arg(ap, struct vfsmount *); ++ gr_log_middle_varargs(audit, msg, str1, gr_to_filename(dentry, mnt)); ++ break; ++ case GR_FILENAME_STR: ++ dentry = va_arg(ap, struct dentry *); ++ mnt = va_arg(ap, struct vfsmount *); ++ str1 = va_arg(ap, char *); ++ gr_log_middle_varargs(audit, msg, gr_to_filename(dentry, mnt), str1); ++ break; ++ case GR_FILENAME_TWO_INT: ++ dentry = va_arg(ap, struct dentry *); ++ mnt = va_arg(ap, struct vfsmount *); ++ num1 = va_arg(ap, int); ++ num2 = va_arg(ap, int); ++ gr_log_middle_varargs(audit, msg, gr_to_filename(dentry, mnt), num1, num2); ++ break; ++ case GR_FILENAME_TWO_INT_STR: ++ dentry = va_arg(ap, struct dentry *); ++ mnt = va_arg(ap, struct vfsmount *); ++ num1 = va_arg(ap, int); ++ num2 = va_arg(ap, int); ++ str1 = va_arg(ap, char *); ++ gr_log_middle_varargs(audit, msg, gr_to_filename(dentry, mnt), num1, num2, str1); ++ break; ++ case GR_TEXTREL: ++ file = va_arg(ap, struct file *); ++ ulong1 = va_arg(ap, unsigned long); ++ ulong2 = va_arg(ap, unsigned long); ++ gr_log_middle_varargs(audit, msg, file ? gr_to_filename(file->f_path.dentry, file->f_path.mnt) : "<anonymous mapping>", ulong1, ulong2); ++ break; ++ case GR_PTRACE: ++ task = va_arg(ap, struct task_struct *); ++ gr_log_middle_varargs(audit, msg, task->exec_file ? gr_to_filename(task->exec_file->f_path.dentry, task->exec_file->f_path.mnt) : "(none)", task->comm, task->pid); ++ break; ++ case GR_RESOURCE: ++ task = va_arg(ap, struct task_struct *); ++ cred = __task_cred(task); ++ pcred = __task_cred(task->real_parent); ++ ulong1 = va_arg(ap, unsigned long); ++ str1 = va_arg(ap, char *); ++ ulong2 = va_arg(ap, unsigned long); ++ gr_log_middle_varargs(audit, msg, ulong1, str1, ulong2, gr_task_fullpath(task), task->comm, task->pid, cred->uid, cred->euid, cred->gid, cred->egid, gr_parent_task_fullpath(task), task->real_parent->comm, task->real_parent->pid, pcred->uid, pcred->euid, pcred->gid, pcred->egid); ++ break; ++ case GR_CAP: ++ task = va_arg(ap, struct task_struct *); ++ cred = __task_cred(task); ++ pcred = __task_cred(task->real_parent); ++ str1 = va_arg(ap, char *); ++ gr_log_middle_varargs(audit, msg, str1, gr_task_fullpath(task), task->comm, task->pid, cred->uid, cred->euid, cred->gid, cred->egid, gr_parent_task_fullpath(task), task->real_parent->comm, task->real_parent->pid, pcred->uid, pcred->euid, pcred->gid, pcred->egid); ++ break; ++ case GR_SIG: ++ str1 = va_arg(ap, char *); ++ voidptr = va_arg(ap, void *); ++ gr_log_middle_varargs(audit, msg, str1, voidptr); ++ break; ++ case GR_SIG2: ++ task = va_arg(ap, struct task_struct *); ++ cred = __task_cred(task); ++ pcred = __task_cred(task->real_parent); ++ num1 = va_arg(ap, int); ++ gr_log_middle_varargs(audit, msg, num1, gr_task_fullpath0(task), task->comm, task->pid, cred->uid, cred->euid, cred->gid, cred->egid, gr_parent_task_fullpath0(task), task->real_parent->comm, task->real_parent->pid, pcred->uid, pcred->euid, pcred->gid, pcred->egid); ++ break; ++ case GR_CRASH1: ++ task = va_arg(ap, struct task_struct *); ++ cred = __task_cred(task); ++ pcred = __task_cred(task->real_parent); ++ ulong1 = va_arg(ap, unsigned long); ++ gr_log_middle_varargs(audit, msg, gr_task_fullpath(task), task->comm, task->pid, cred->uid, cred->euid, cred->gid, cred->egid, gr_parent_task_fullpath(task), task->real_parent->comm, task->real_parent->pid, pcred->uid, pcred->euid, pcred->gid, pcred->egid, cred->uid, ulong1); ++ break; ++ case GR_CRASH2: ++ task = va_arg(ap, struct task_struct *); ++ cred = __task_cred(task); ++ pcred = __task_cred(task->real_parent); ++ ulong1 = va_arg(ap, unsigned long); ++ gr_log_middle_varargs(audit, msg, gr_task_fullpath(task), task->comm, task->pid, cred->uid, cred->euid, cred->gid, cred->egid, gr_parent_task_fullpath(task), task->real_parent->comm, task->real_parent->pid, pcred->uid, pcred->euid, pcred->gid, pcred->egid, ulong1); ++ break; ++ case GR_RWXMAP: ++ file = va_arg(ap, struct file *); ++ gr_log_middle_varargs(audit, msg, file ? gr_to_filename(file->f_path.dentry, file->f_path.mnt) : "<anonymous mapping>"); ++ break; ++ case GR_PSACCT: ++ { ++ unsigned int wday, cday; ++ __u8 whr, chr; ++ __u8 wmin, cmin; ++ __u8 wsec, csec; ++ char cur_tty[64] = { 0 }; ++ char parent_tty[64] = { 0 }; ++ ++ task = va_arg(ap, struct task_struct *); ++ wday = va_arg(ap, unsigned int); ++ cday = va_arg(ap, unsigned int); ++ whr = va_arg(ap, int); ++ chr = va_arg(ap, int); ++ wmin = va_arg(ap, int); ++ cmin = va_arg(ap, int); ++ wsec = va_arg(ap, int); ++ csec = va_arg(ap, int); ++ ulong1 = va_arg(ap, unsigned long); ++ cred = __task_cred(task); ++ pcred = __task_cred(task->real_parent); ++ ++ gr_log_middle_varargs(audit, msg, gr_task_fullpath(task), task->comm, task->pid, &task->signal->curr_ip, tty_name(task->signal->tty, cur_tty), cred->uid, cred->euid, cred->gid, cred->egid, wday, whr, wmin, wsec, cday, chr, cmin, csec, (task->flags & PF_SIGNALED) ? "killed by signal" : "exited", ulong1, gr_parent_task_fullpath(task), task->real_parent->comm, task->real_parent->pid, &task->real_parent->signal->curr_ip, tty_name(task->real_parent->signal->tty, parent_tty), pcred->uid, pcred->euid, pcred->gid, pcred->egid); ++ } ++ break; ++ default: ++ gr_log_middle(audit, msg, ap); ++ } ++ va_end(ap); ++ // these don't need DEFAULTSECARGS printed on the end ++ if (argtypes == GR_CRASH1 || argtypes == GR_CRASH2) ++ gr_log_end(audit, 0); ++ else ++ gr_log_end(audit, 1); ++ END_LOCKS(audit); ++} +diff --git a/grsecurity/grsec_mem.c b/grsecurity/grsec_mem.c +new file mode 100644 +index 0000000..f536303 +--- /dev/null ++++ b/grsecurity/grsec_mem.c +@@ -0,0 +1,40 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/mm.h> ++#include <linux/mman.h> ++#include <linux/grinternal.h> ++ ++void ++gr_handle_ioperm(void) ++{ ++ gr_log_noargs(GR_DONT_AUDIT, GR_IOPERM_MSG); ++ return; ++} ++ ++void ++gr_handle_iopl(void) ++{ ++ gr_log_noargs(GR_DONT_AUDIT, GR_IOPL_MSG); ++ return; ++} ++ ++void ++gr_handle_mem_readwrite(u64 from, u64 to) ++{ ++ gr_log_two_u64(GR_DONT_AUDIT, GR_MEM_READWRITE_MSG, from, to); ++ return; ++} ++ ++void ++gr_handle_vm86(void) ++{ ++ gr_log_noargs(GR_DONT_AUDIT, GR_VM86_MSG); ++ return; ++} ++ ++void ++gr_log_badprocpid(const char *entry) ++{ ++ gr_log_str(GR_DONT_AUDIT, GR_BADPROCPID_MSG, entry); ++ return; ++} +diff --git a/grsecurity/grsec_mount.c b/grsecurity/grsec_mount.c +new file mode 100644 +index 0000000..2131422 +--- /dev/null ++++ b/grsecurity/grsec_mount.c +@@ -0,0 +1,62 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/mount.h> ++#include <linux/grsecurity.h> ++#include <linux/grinternal.h> ++ ++void ++gr_log_remount(const char *devname, const int retval) ++{ ++#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT ++ if (grsec_enable_mount && (retval >= 0)) ++ gr_log_str(GR_DO_AUDIT, GR_REMOUNT_AUDIT_MSG, devname ? devname : "none"); ++#endif ++ return; ++} ++ ++void ++gr_log_unmount(const char *devname, const int retval) ++{ ++#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT ++ if (grsec_enable_mount && (retval >= 0)) ++ gr_log_str(GR_DO_AUDIT, GR_UNMOUNT_AUDIT_MSG, devname ? devname : "none"); ++#endif ++ return; ++} ++ ++void ++gr_log_mount(const char *from, const char *to, const int retval) ++{ ++#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT ++ if (grsec_enable_mount && (retval >= 0)) ++ gr_log_str_str(GR_DO_AUDIT, GR_MOUNT_AUDIT_MSG, from ? from : "none", to); ++#endif ++ return; ++} ++ ++int ++gr_handle_rofs_mount(struct dentry *dentry, struct vfsmount *mnt, int mnt_flags) ++{ ++#ifdef CONFIG_GRKERNSEC_ROFS ++ if (grsec_enable_rofs && !(mnt_flags & MNT_READONLY)) { ++ gr_log_fs_generic(GR_DO_AUDIT, GR_ROFS_MOUNT_MSG, dentry, mnt); ++ return -EPERM; ++ } else ++ return 0; ++#endif ++ return 0; ++} ++ ++int ++gr_handle_rofs_blockwrite(struct dentry *dentry, struct vfsmount *mnt, int acc_mode) ++{ ++#ifdef CONFIG_GRKERNSEC_ROFS ++ if (grsec_enable_rofs && (acc_mode & MAY_WRITE) && ++ dentry->d_inode && S_ISBLK(dentry->d_inode->i_mode)) { ++ gr_log_fs_generic(GR_DO_AUDIT, GR_ROFS_BLOCKWRITE_MSG, dentry, mnt); ++ return -EPERM; ++ } else ++ return 0; ++#endif ++ return 0; ++} +diff --git a/grsecurity/grsec_pax.c b/grsecurity/grsec_pax.c +new file mode 100644 +index 0000000..a3b12a0 +--- /dev/null ++++ b/grsecurity/grsec_pax.c +@@ -0,0 +1,36 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/mm.h> ++#include <linux/file.h> ++#include <linux/grinternal.h> ++#include <linux/grsecurity.h> ++ ++void ++gr_log_textrel(struct vm_area_struct * vma) ++{ ++#ifdef CONFIG_GRKERNSEC_AUDIT_TEXTREL ++ if (grsec_enable_audit_textrel) ++ gr_log_textrel_ulong_ulong(GR_DO_AUDIT, GR_TEXTREL_AUDIT_MSG, vma->vm_file, vma->vm_start, vma->vm_pgoff); ++#endif ++ return; ++} ++ ++void ++gr_log_rwxmmap(struct file *file) ++{ ++#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG ++ if (grsec_enable_log_rwxmaps) ++ gr_log_rwxmap(GR_DONT_AUDIT, GR_RWXMMAP_MSG, file); ++#endif ++ return; ++} ++ ++void ++gr_log_rwxmprotect(struct file *file) ++{ ++#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG ++ if (grsec_enable_log_rwxmaps) ++ gr_log_rwxmap(GR_DONT_AUDIT, GR_RWXMPROTECT_MSG, file); ++#endif ++ return; ++} +diff --git a/grsecurity/grsec_ptrace.c b/grsecurity/grsec_ptrace.c +new file mode 100644 +index 0000000..f7f29aa +--- /dev/null ++++ b/grsecurity/grsec_ptrace.c +@@ -0,0 +1,30 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/grinternal.h> ++#include <linux/security.h> ++ ++void ++gr_audit_ptrace(struct task_struct *task) ++{ ++#ifdef CONFIG_GRKERNSEC_AUDIT_PTRACE ++ if (grsec_enable_audit_ptrace) ++ gr_log_ptrace(GR_DO_AUDIT, GR_PTRACE_AUDIT_MSG, task); ++#endif ++ return; ++} ++ ++int ++gr_ptrace_readexec(struct file *file, int unsafe_flags) ++{ ++#ifdef CONFIG_GRKERNSEC_PTRACE_READEXEC ++ const struct dentry *dentry = file->f_path.dentry; ++ const struct vfsmount *mnt = file->f_path.mnt; ++ ++ if (grsec_enable_ptrace_readexec && (unsafe_flags & LSM_UNSAFE_PTRACE) && ++ (inode_permission(dentry->d_inode, MAY_READ) || !gr_acl_handle_open(dentry, mnt, MAY_READ))) { ++ gr_log_fs_generic(GR_DONT_AUDIT, GR_PTRACE_READEXEC_MSG, dentry, mnt); ++ return -EACCES; ++ } ++#endif ++ return 0; ++} +diff --git a/grsecurity/grsec_sig.c b/grsecurity/grsec_sig.c +new file mode 100644 +index 0000000..7a5b2de +--- /dev/null ++++ b/grsecurity/grsec_sig.c +@@ -0,0 +1,207 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/delay.h> ++#include <linux/grsecurity.h> ++#include <linux/grinternal.h> ++#include <linux/hardirq.h> ++ ++char *signames[] = { ++ [SIGSEGV] = "Segmentation fault", ++ [SIGILL] = "Illegal instruction", ++ [SIGABRT] = "Abort", ++ [SIGBUS] = "Invalid alignment/Bus error" ++}; ++ ++void ++gr_log_signal(const int sig, const void *addr, const struct task_struct *t) ++{ ++#ifdef CONFIG_GRKERNSEC_SIGNAL ++ if (grsec_enable_signal && ((sig == SIGSEGV) || (sig == SIGILL) || ++ (sig == SIGABRT) || (sig == SIGBUS))) { ++ if (t->pid == current->pid) { ++ gr_log_sig_addr(GR_DONT_AUDIT_GOOD, GR_UNISIGLOG_MSG, signames[sig], addr); ++ } else { ++ gr_log_sig_task(GR_DONT_AUDIT_GOOD, GR_DUALSIGLOG_MSG, t, sig); ++ } ++ } ++#endif ++ return; ++} ++ ++int ++gr_handle_signal(const struct task_struct *p, const int sig) ++{ ++#ifdef CONFIG_GRKERNSEC ++ /* ignore the 0 signal for protected task checks */ ++ if (current->pid > 1 && sig && gr_check_protected_task(p)) { ++ gr_log_sig_task(GR_DONT_AUDIT, GR_SIG_ACL_MSG, p, sig); ++ return -EPERM; ++ } else if (gr_pid_is_chrooted((struct task_struct *)p)) { ++ return -EPERM; ++ } ++#endif ++ return 0; ++} ++ ++#ifdef CONFIG_GRKERNSEC ++extern int specific_send_sig_info(int sig, struct siginfo *info, struct task_struct *t); ++ ++int gr_fake_force_sig(int sig, struct task_struct *t) ++{ ++ unsigned long int flags; ++ int ret, blocked, ignored; ++ struct k_sigaction *action; ++ ++ spin_lock_irqsave(&t->sighand->siglock, flags); ++ action = &t->sighand->action[sig-1]; ++ ignored = action->sa.sa_handler == SIG_IGN; ++ blocked = sigismember(&t->blocked, sig); ++ if (blocked || ignored) { ++ action->sa.sa_handler = SIG_DFL; ++ if (blocked) { ++ sigdelset(&t->blocked, sig); ++ recalc_sigpending_and_wake(t); ++ } ++ } ++ if (action->sa.sa_handler == SIG_DFL) ++ t->signal->flags &= ~SIGNAL_UNKILLABLE; ++ ret = specific_send_sig_info(sig, SEND_SIG_PRIV, t); ++ ++ spin_unlock_irqrestore(&t->sighand->siglock, flags); ++ ++ return ret; ++} ++#endif ++ ++#ifdef CONFIG_GRKERNSEC_BRUTE ++#define GR_USER_BAN_TIME (15 * 60) ++ ++static int __get_dumpable(unsigned long mm_flags) ++{ ++ int ret; ++ ++ ret = mm_flags & MMF_DUMPABLE_MASK; ++ return (ret >= 2) ? 2 : ret; ++} ++#endif ++ ++void gr_handle_brute_attach(struct task_struct *p, unsigned long mm_flags) ++{ ++#ifdef CONFIG_GRKERNSEC_BRUTE ++ uid_t uid = 0; ++ ++ if (!grsec_enable_brute) ++ return; ++ ++ rcu_read_lock(); ++ read_lock(&tasklist_lock); ++ read_lock(&grsec_exec_file_lock); ++ if (p->real_parent && p->real_parent->exec_file == p->exec_file) ++ p->real_parent->brute = 1; ++ else { ++ const struct cred *cred = __task_cred(p), *cred2; ++ struct task_struct *tsk, *tsk2; ++ ++ if (!__get_dumpable(mm_flags) && cred->uid) { ++ struct user_struct *user; ++ ++ uid = cred->uid; ++ ++ /* this is put upon execution past expiration */ ++ user = find_user(uid); ++ if (user == NULL) ++ goto unlock; ++ user->banned = 1; ++ user->ban_expires = get_seconds() + GR_USER_BAN_TIME; ++ if (user->ban_expires == ~0UL) ++ user->ban_expires--; ++ ++ do_each_thread(tsk2, tsk) { ++ cred2 = __task_cred(tsk); ++ if (tsk != p && cred2->uid == uid) ++ gr_fake_force_sig(SIGKILL, tsk); ++ } while_each_thread(tsk2, tsk); ++ } ++ } ++unlock: ++ read_unlock(&grsec_exec_file_lock); ++ read_unlock(&tasklist_lock); ++ rcu_read_unlock(); ++ ++ if (uid) ++ printk(KERN_ALERT "grsec: bruteforce prevention initiated against uid %u, banning for %d minutes\n", uid, GR_USER_BAN_TIME / 60); ++ ++#endif ++ return; ++} ++ ++void gr_handle_brute_check(void) ++{ ++#ifdef CONFIG_GRKERNSEC_BRUTE ++ if (current->brute) ++ msleep(30 * 1000); ++#endif ++ return; ++} ++ ++void gr_handle_kernel_exploit(void) ++{ ++#ifdef CONFIG_GRKERNSEC_KERN_LOCKOUT ++ const struct cred *cred; ++ struct task_struct *tsk, *tsk2; ++ struct user_struct *user; ++ uid_t uid; ++ ++ if (in_irq() || in_serving_softirq() || in_nmi()) ++ panic("grsec: halting the system due to suspicious kernel crash caused in interrupt context"); ++ ++ uid = current_uid(); ++ ++ if (uid == 0) ++ panic("grsec: halting the system due to suspicious kernel crash caused by root"); ++ else { ++ /* kill all the processes of this user, hold a reference ++ to their creds struct, and prevent them from creating ++ another process until system reset ++ */ ++ printk(KERN_ALERT "grsec: banning user with uid %u until system restart for suspicious kernel crash\n", uid); ++ /* we intentionally leak this ref */ ++ user = get_uid(current->cred->user); ++ if (user) { ++ user->banned = 1; ++ user->ban_expires = ~0UL; ++ } ++ ++ read_lock(&tasklist_lock); ++ do_each_thread(tsk2, tsk) { ++ cred = __task_cred(tsk); ++ if (cred->uid == uid) ++ gr_fake_force_sig(SIGKILL, tsk); ++ } while_each_thread(tsk2, tsk); ++ read_unlock(&tasklist_lock); ++ } ++#endif ++} ++ ++int __gr_process_user_ban(struct user_struct *user) ++{ ++#if defined(CONFIG_GRKERNSEC_KERN_LOCKOUT) || defined(CONFIG_GRKERNSEC_BRUTE) ++ if (unlikely(user->banned)) { ++ if (user->ban_expires != ~0UL && time_after_eq(get_seconds(), user->ban_expires)) { ++ user->banned = 0; ++ user->ban_expires = 0; ++ free_uid(user); ++ } else ++ return -EPERM; ++ } ++#endif ++ return 0; ++} ++ ++int gr_process_user_ban(void) ++{ ++#if defined(CONFIG_GRKERNSEC_KERN_LOCKOUT) || defined(CONFIG_GRKERNSEC_BRUTE) ++ return __gr_process_user_ban(current->cred->user); ++#endif ++ return 0; ++} +diff --git a/grsecurity/grsec_sock.c b/grsecurity/grsec_sock.c +new file mode 100644 +index 0000000..4030d57 +--- /dev/null ++++ b/grsecurity/grsec_sock.c +@@ -0,0 +1,244 @@ ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/sched.h> ++#include <linux/file.h> ++#include <linux/net.h> ++#include <linux/in.h> ++#include <linux/ip.h> ++#include <net/sock.h> ++#include <net/inet_sock.h> ++#include <linux/grsecurity.h> ++#include <linux/grinternal.h> ++#include <linux/gracl.h> ++ ++extern int gr_search_udp_recvmsg(const struct sock *sk, const struct sk_buff *skb); ++extern int gr_search_udp_sendmsg(const struct sock *sk, const struct sockaddr_in *addr); ++ ++EXPORT_SYMBOL(gr_search_udp_recvmsg); ++EXPORT_SYMBOL(gr_search_udp_sendmsg); ++ ++#ifdef CONFIG_UNIX_MODULE ++EXPORT_SYMBOL(gr_acl_handle_unix); ++EXPORT_SYMBOL(gr_acl_handle_mknod); ++EXPORT_SYMBOL(gr_handle_chroot_unix); ++EXPORT_SYMBOL(gr_handle_create); ++#endif ++ ++#ifdef CONFIG_GRKERNSEC ++#define gr_conn_table_size 32749 ++struct conn_table_entry { ++ struct conn_table_entry *next; ++ struct signal_struct *sig; ++}; ++ ++struct conn_table_entry *gr_conn_table[gr_conn_table_size]; ++DEFINE_SPINLOCK(gr_conn_table_lock); ++ ++extern const char * gr_socktype_to_name(unsigned char type); ++extern const char * gr_proto_to_name(unsigned char proto); ++extern const char * gr_sockfamily_to_name(unsigned char family); ++ ++static __inline__ int ++conn_hash(__u32 saddr, __u32 daddr, __u16 sport, __u16 dport, unsigned int size) ++{ ++ return ((daddr + saddr + (sport << 8) + (dport << 16)) % size); ++} ++ ++static __inline__ int ++conn_match(const struct signal_struct *sig, __u32 saddr, __u32 daddr, ++ __u16 sport, __u16 dport) ++{ ++ if (unlikely(sig->gr_saddr == saddr && sig->gr_daddr == daddr && ++ sig->gr_sport == sport && sig->gr_dport == dport)) ++ return 1; ++ else ++ return 0; ++} ++ ++static void gr_add_to_task_ip_table_nolock(struct signal_struct *sig, struct conn_table_entry *newent) ++{ ++ struct conn_table_entry **match; ++ unsigned int index; ++ ++ index = conn_hash(sig->gr_saddr, sig->gr_daddr, ++ sig->gr_sport, sig->gr_dport, ++ gr_conn_table_size); ++ ++ newent->sig = sig; ++ ++ match = &gr_conn_table[index]; ++ newent->next = *match; ++ *match = newent; ++ ++ return; ++} ++ ++static void gr_del_task_from_ip_table_nolock(struct signal_struct *sig) ++{ ++ struct conn_table_entry *match, *last = NULL; ++ unsigned int index; ++ ++ index = conn_hash(sig->gr_saddr, sig->gr_daddr, ++ sig->gr_sport, sig->gr_dport, ++ gr_conn_table_size); ++ ++ match = gr_conn_table[index]; ++ while (match && !conn_match(match->sig, ++ sig->gr_saddr, sig->gr_daddr, sig->gr_sport, ++ sig->gr_dport)) { ++ last = match; ++ match = match->next; ++ } ++ ++ if (match) { ++ if (last) ++ last->next = match->next; ++ else ++ gr_conn_table[index] = NULL; ++ kfree(match); ++ } ++ ++ return; ++} ++ ++static struct signal_struct * gr_lookup_task_ip_table(__u32 saddr, __u32 daddr, ++ __u16 sport, __u16 dport) ++{ ++ struct conn_table_entry *match; ++ unsigned int index; ++ ++ index = conn_hash(saddr, daddr, sport, dport, gr_conn_table_size); ++ ++ match = gr_conn_table[index]; ++ while (match && !conn_match(match->sig, saddr, daddr, sport, dport)) ++ match = match->next; ++ ++ if (match) ++ return match->sig; ++ else ++ return NULL; ++} ++ ++#endif ++ ++void gr_update_task_in_ip_table(struct task_struct *task, const struct inet_sock *inet) ++{ ++#ifdef CONFIG_GRKERNSEC ++ struct signal_struct *sig = task->signal; ++ struct conn_table_entry *newent; ++ ++ newent = kmalloc(sizeof(struct conn_table_entry), GFP_ATOMIC); ++ if (newent == NULL) ++ return; ++ /* no bh lock needed since we are called with bh disabled */ ++ spin_lock(&gr_conn_table_lock); ++ gr_del_task_from_ip_table_nolock(sig); ++ sig->gr_saddr = inet->inet_rcv_saddr; ++ sig->gr_daddr = inet->inet_daddr; ++ sig->gr_sport = inet->inet_sport; ++ sig->gr_dport = inet->inet_dport; ++ gr_add_to_task_ip_table_nolock(sig, newent); ++ spin_unlock(&gr_conn_table_lock); ++#endif ++ return; ++} ++ ++void gr_del_task_from_ip_table(struct task_struct *task) ++{ ++#ifdef CONFIG_GRKERNSEC ++ spin_lock_bh(&gr_conn_table_lock); ++ gr_del_task_from_ip_table_nolock(task->signal); ++ spin_unlock_bh(&gr_conn_table_lock); ++#endif ++ return; ++} ++ ++void ++gr_attach_curr_ip(const struct sock *sk) ++{ ++#ifdef CONFIG_GRKERNSEC ++ struct signal_struct *p, *set; ++ const struct inet_sock *inet = inet_sk(sk); ++ ++ if (unlikely(sk->sk_protocol != IPPROTO_TCP)) ++ return; ++ ++ set = current->signal; ++ ++ spin_lock_bh(&gr_conn_table_lock); ++ p = gr_lookup_task_ip_table(inet->inet_daddr, inet->inet_rcv_saddr, ++ inet->inet_dport, inet->inet_sport); ++ if (unlikely(p != NULL)) { ++ set->curr_ip = p->curr_ip; ++ set->used_accept = 1; ++ gr_del_task_from_ip_table_nolock(p); ++ spin_unlock_bh(&gr_conn_table_lock); ++ return; ++ } ++ spin_unlock_bh(&gr_conn_table_lock); ++ ++ set->curr_ip = inet->inet_daddr; ++ set->used_accept = 1; ++#endif ++ return; ++} ++ ++int ++gr_handle_sock_all(const int family, const int type, const int protocol) ++{ ++#ifdef CONFIG_GRKERNSEC_SOCKET_ALL ++ if (grsec_enable_socket_all && in_group_p(grsec_socket_all_gid) && ++ (family != AF_UNIX)) { ++ if (family == AF_INET) ++ gr_log_str3(GR_DONT_AUDIT, GR_SOCK_MSG, gr_sockfamily_to_name(family), gr_socktype_to_name(type), gr_proto_to_name(protocol)); ++ else ++ gr_log_str2_int(GR_DONT_AUDIT, GR_SOCK_NOINET_MSG, gr_sockfamily_to_name(family), gr_socktype_to_name(type), protocol); ++ return -EACCES; ++ } ++#endif ++ return 0; ++} ++ ++int ++gr_handle_sock_server(const struct sockaddr *sck) ++{ ++#ifdef CONFIG_GRKERNSEC_SOCKET_SERVER ++ if (grsec_enable_socket_server && ++ in_group_p(grsec_socket_server_gid) && ++ sck && (sck->sa_family != AF_UNIX) && ++ (sck->sa_family != AF_LOCAL)) { ++ gr_log_noargs(GR_DONT_AUDIT, GR_BIND_MSG); ++ return -EACCES; ++ } ++#endif ++ return 0; ++} ++ ++int ++gr_handle_sock_server_other(const struct sock *sck) ++{ ++#ifdef CONFIG_GRKERNSEC_SOCKET_SERVER ++ if (grsec_enable_socket_server && ++ in_group_p(grsec_socket_server_gid) && ++ sck && (sck->sk_family != AF_UNIX) && ++ (sck->sk_family != AF_LOCAL)) { ++ gr_log_noargs(GR_DONT_AUDIT, GR_BIND_MSG); ++ return -EACCES; ++ } ++#endif ++ return 0; ++} ++ ++int ++gr_handle_sock_client(const struct sockaddr *sck) ++{ ++#ifdef CONFIG_GRKERNSEC_SOCKET_CLIENT ++ if (grsec_enable_socket_client && in_group_p(grsec_socket_client_gid) && ++ sck && (sck->sa_family != AF_UNIX) && ++ (sck->sa_family != AF_LOCAL)) { ++ gr_log_noargs(GR_DONT_AUDIT, GR_CONNECT_MSG); ++ return -EACCES; ++ } ++#endif ++ return 0; ++} +diff --git a/grsecurity/grsec_sysctl.c b/grsecurity/grsec_sysctl.c +new file mode 100644 +index 0000000..f55ef0f +--- /dev/null ++++ b/grsecurity/grsec_sysctl.c +@@ -0,0 +1,469 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/sysctl.h> ++#include <linux/grsecurity.h> ++#include <linux/grinternal.h> ++ ++int ++gr_handle_sysctl_mod(const char *dirname, const char *name, const int op) ++{ ++#ifdef CONFIG_GRKERNSEC_SYSCTL ++ if (dirname == NULL || name == NULL) ++ return 0; ++ if (!strcmp(dirname, "grsecurity") && grsec_lock && (op & MAY_WRITE)) { ++ gr_log_str(GR_DONT_AUDIT, GR_SYSCTL_MSG, name); ++ return -EACCES; ++ } ++#endif ++ return 0; ++} ++ ++#ifdef CONFIG_GRKERNSEC_ROFS ++static int __maybe_unused one = 1; ++#endif ++ ++#if defined(CONFIG_GRKERNSEC_SYSCTL) || defined(CONFIG_GRKERNSEC_ROFS) ++struct ctl_table grsecurity_table[] = { ++#ifdef CONFIG_GRKERNSEC_SYSCTL ++#ifdef CONFIG_GRKERNSEC_SYSCTL_DISTRO ++#ifdef CONFIG_GRKERNSEC_IO ++ { ++ .procname = "disable_priv_io", ++ .data = &grsec_disable_privio, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#endif ++#ifdef CONFIG_GRKERNSEC_LINK ++ { ++ .procname = "linking_restrictions", ++ .data = &grsec_enable_link, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_SYMLINKOWN ++ { ++ .procname = "enforce_symlinksifowner", ++ .data = &grsec_enable_symlinkown, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++ { ++ .procname = "symlinkown_gid", ++ .data = &grsec_symlinkown_gid, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_BRUTE ++ { ++ .procname = "deter_bruteforce", ++ .data = &grsec_enable_brute, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_FIFO ++ { ++ .procname = "fifo_restrictions", ++ .data = &grsec_enable_fifo, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_PTRACE_READEXEC ++ { ++ .procname = "ptrace_readexec", ++ .data = &grsec_enable_ptrace_readexec, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_SETXID ++ { ++ .procname = "consistent_setxid", ++ .data = &grsec_enable_setxid, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++ { ++ .procname = "ip_blackhole", ++ .data = &grsec_enable_blackhole, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++ { ++ .procname = "lastack_retries", ++ .data = &grsec_lastack_retries, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_EXECLOG ++ { ++ .procname = "exec_logging", ++ .data = &grsec_enable_execlog, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG ++ { ++ .procname = "rwxmap_logging", ++ .data = &grsec_enable_log_rwxmaps, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_SIGNAL ++ { ++ .procname = "signal_logging", ++ .data = &grsec_enable_signal, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_FORKFAIL ++ { ++ .procname = "forkfail_logging", ++ .data = &grsec_enable_forkfail, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_TIME ++ { ++ .procname = "timechange_logging", ++ .data = &grsec_enable_time, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_SHMAT ++ { ++ .procname = "chroot_deny_shmat", ++ .data = &grsec_enable_chroot_shmat, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_UNIX ++ { ++ .procname = "chroot_deny_unix", ++ .data = &grsec_enable_chroot_unix, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_MOUNT ++ { ++ .procname = "chroot_deny_mount", ++ .data = &grsec_enable_chroot_mount, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_FCHDIR ++ { ++ .procname = "chroot_deny_fchdir", ++ .data = &grsec_enable_chroot_fchdir, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_DOUBLE ++ { ++ .procname = "chroot_deny_chroot", ++ .data = &grsec_enable_chroot_double, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_PIVOT ++ { ++ .procname = "chroot_deny_pivot", ++ .data = &grsec_enable_chroot_pivot, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_CHDIR ++ { ++ .procname = "chroot_enforce_chdir", ++ .data = &grsec_enable_chroot_chdir, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_CHMOD ++ { ++ .procname = "chroot_deny_chmod", ++ .data = &grsec_enable_chroot_chmod, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_MKNOD ++ { ++ .procname = "chroot_deny_mknod", ++ .data = &grsec_enable_chroot_mknod, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_NICE ++ { ++ .procname = "chroot_restrict_nice", ++ .data = &grsec_enable_chroot_nice, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_EXECLOG ++ { ++ .procname = "chroot_execlog", ++ .data = &grsec_enable_chroot_execlog, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS ++ { ++ .procname = "chroot_caps", ++ .data = &grsec_enable_chroot_caps, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_SYSCTL ++ { ++ .procname = "chroot_deny_sysctl", ++ .data = &grsec_enable_chroot_sysctl, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_TPE ++ { ++ .procname = "tpe", ++ .data = &grsec_enable_tpe, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++ { ++ .procname = "tpe_gid", ++ .data = &grsec_tpe_gid, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_TPE_INVERT ++ { ++ .procname = "tpe_invert", ++ .data = &grsec_enable_tpe_invert, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_TPE_ALL ++ { ++ .procname = "tpe_restrict_all", ++ .data = &grsec_enable_tpe_all, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_SOCKET_ALL ++ { ++ .procname = "socket_all", ++ .data = &grsec_enable_socket_all, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++ { ++ .procname = "socket_all_gid", ++ .data = &grsec_socket_all_gid, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_SOCKET_CLIENT ++ { ++ .procname = "socket_client", ++ .data = &grsec_enable_socket_client, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++ { ++ .procname = "socket_client_gid", ++ .data = &grsec_socket_client_gid, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_SOCKET_SERVER ++ { ++ .procname = "socket_server", ++ .data = &grsec_enable_socket_server, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++ { ++ .procname = "socket_server_gid", ++ .data = &grsec_socket_server_gid, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_AUDIT_GROUP ++ { ++ .procname = "audit_group", ++ .data = &grsec_enable_group, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++ { ++ .procname = "audit_gid", ++ .data = &grsec_audit_gid, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_AUDIT_CHDIR ++ { ++ .procname = "audit_chdir", ++ .data = &grsec_enable_chdir, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT ++ { ++ .procname = "audit_mount", ++ .data = &grsec_enable_mount, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_AUDIT_TEXTREL ++ { ++ .procname = "audit_textrel", ++ .data = &grsec_enable_audit_textrel, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_DMESG ++ { ++ .procname = "dmesg", ++ .data = &grsec_enable_dmesg, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK ++ { ++ .procname = "chroot_findtask", ++ .data = &grsec_enable_chroot_findtask, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_RESLOG ++ { ++ .procname = "resource_logging", ++ .data = &grsec_resource_logging, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_AUDIT_PTRACE ++ { ++ .procname = "audit_ptrace", ++ .data = &grsec_enable_audit_ptrace, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_HARDEN_PTRACE ++ { ++ .procname = "harden_ptrace", ++ .data = &grsec_enable_harden_ptrace, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++ { ++ .procname = "grsec_lock", ++ .data = &grsec_lock, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++#endif ++#ifdef CONFIG_GRKERNSEC_ROFS ++ { ++ .procname = "romount_protect", ++ .data = &grsec_enable_rofs, ++ .maxlen = sizeof(int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec_minmax, ++ .extra1 = &one, ++ .extra2 = &one, ++ }, ++#endif ++ { } ++}; ++#endif +diff --git a/grsecurity/grsec_time.c b/grsecurity/grsec_time.c +new file mode 100644 +index 0000000..0dc13c3 +--- /dev/null ++++ b/grsecurity/grsec_time.c +@@ -0,0 +1,16 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/grinternal.h> ++#include <linux/module.h> ++ ++void ++gr_log_timechange(void) ++{ ++#ifdef CONFIG_GRKERNSEC_TIME ++ if (grsec_enable_time) ++ gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_TIME_MSG); ++#endif ++ return; ++} ++ ++EXPORT_SYMBOL(gr_log_timechange); +diff --git a/grsecurity/grsec_tpe.c b/grsecurity/grsec_tpe.c +new file mode 100644 +index 0000000..07e0dc0 +--- /dev/null ++++ b/grsecurity/grsec_tpe.c +@@ -0,0 +1,73 @@ ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/file.h> ++#include <linux/fs.h> ++#include <linux/grinternal.h> ++ ++extern int gr_acl_tpe_check(void); ++ ++int ++gr_tpe_allow(const struct file *file) ++{ ++#ifdef CONFIG_GRKERNSEC ++ struct inode *inode = file->f_path.dentry->d_parent->d_inode; ++ const struct cred *cred = current_cred(); ++ char *msg = NULL; ++ char *msg2 = NULL; ++ ++ // never restrict root ++ if (!cred->uid) ++ return 1; ++ ++ if (grsec_enable_tpe) { ++#ifdef CONFIG_GRKERNSEC_TPE_INVERT ++ if (grsec_enable_tpe_invert && !in_group_p(grsec_tpe_gid)) ++ msg = "not being in trusted group"; ++ else if (!grsec_enable_tpe_invert && in_group_p(grsec_tpe_gid)) ++ msg = "being in untrusted group"; ++#else ++ if (in_group_p(grsec_tpe_gid)) ++ msg = "being in untrusted group"; ++#endif ++ } ++ if (!msg && gr_acl_tpe_check()) ++ msg = "being in untrusted role"; ++ ++ // not in any affected group/role ++ if (!msg) ++ goto next_check; ++ ++ if (inode->i_uid) ++ msg2 = "file in non-root-owned directory"; ++ else if (inode->i_mode & S_IWOTH) ++ msg2 = "file in world-writable directory"; ++ else if (inode->i_mode & S_IWGRP) ++ msg2 = "file in group-writable directory"; ++ ++ if (msg && msg2) { ++ char fullmsg[70] = {0}; ++ snprintf(fullmsg, sizeof(fullmsg)-1, "%s and %s", msg, msg2); ++ gr_log_str_fs(GR_DONT_AUDIT, GR_EXEC_TPE_MSG, fullmsg, file->f_path.dentry, file->f_path.mnt); ++ return 0; ++ } ++ msg = NULL; ++next_check: ++#ifdef CONFIG_GRKERNSEC_TPE_ALL ++ if (!grsec_enable_tpe || !grsec_enable_tpe_all) ++ return 1; ++ ++ if (inode->i_uid && (inode->i_uid != cred->uid)) ++ msg = "directory not owned by user"; ++ else if (inode->i_mode & S_IWOTH) ++ msg = "file in world-writable directory"; ++ else if (inode->i_mode & S_IWGRP) ++ msg = "file in group-writable directory"; ++ ++ if (msg) { ++ gr_log_str_fs(GR_DONT_AUDIT, GR_EXEC_TPE_MSG, msg, file->f_path.dentry, file->f_path.mnt); ++ return 0; ++ } ++#endif ++#endif ++ return 1; ++} +diff --git a/grsecurity/grsum.c b/grsecurity/grsum.c +new file mode 100644 +index 0000000..9f7b1ac +--- /dev/null ++++ b/grsecurity/grsum.c +@@ -0,0 +1,61 @@ ++#include <linux/err.h> ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/mm.h> ++#include <linux/scatterlist.h> ++#include <linux/crypto.h> ++#include <linux/gracl.h> ++ ++ ++#if !defined(CONFIG_CRYPTO) || defined(CONFIG_CRYPTO_MODULE) || !defined(CONFIG_CRYPTO_SHA256) || defined(CONFIG_CRYPTO_SHA256_MODULE) ++#error "crypto and sha256 must be built into the kernel" ++#endif ++ ++int ++chkpw(struct gr_arg *entry, unsigned char *salt, unsigned char *sum) ++{ ++ char *p; ++ struct crypto_hash *tfm; ++ struct hash_desc desc; ++ struct scatterlist sg; ++ unsigned char temp_sum[GR_SHA_LEN]; ++ volatile int retval = 0; ++ volatile int dummy = 0; ++ unsigned int i; ++ ++ sg_init_table(&sg, 1); ++ ++ tfm = crypto_alloc_hash("sha256", 0, CRYPTO_ALG_ASYNC); ++ if (IS_ERR(tfm)) { ++ /* should never happen, since sha256 should be built in */ ++ return 1; ++ } ++ ++ desc.tfm = tfm; ++ desc.flags = 0; ++ ++ crypto_hash_init(&desc); ++ ++ p = salt; ++ sg_set_buf(&sg, p, GR_SALT_LEN); ++ crypto_hash_update(&desc, &sg, sg.length); ++ ++ p = entry->pw; ++ sg_set_buf(&sg, p, strlen(p)); ++ ++ crypto_hash_update(&desc, &sg, sg.length); ++ ++ crypto_hash_final(&desc, temp_sum); ++ ++ memset(entry->pw, 0, GR_PW_LEN); ++ ++ for (i = 0; i < GR_SHA_LEN; i++) ++ if (sum[i] != temp_sum[i]) ++ retval = 1; ++ else ++ dummy = 1; // waste a cycle ++ ++ crypto_free_hash(tfm); ++ ++ return retval; ++} +diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h +index f1c8ca6..b5c1cc7 100644 +--- a/include/acpi/acpi_bus.h ++++ b/include/acpi/acpi_bus.h +@@ -107,7 +107,7 @@ struct acpi_device_ops { + acpi_op_bind bind; + acpi_op_unbind unbind; + acpi_op_notify notify; +-}; ++} __no_const; + + #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */ + +diff --git a/include/asm-generic/atomic-long.h b/include/asm-generic/atomic-long.h +index b7babf0..71e4e74 100644 +--- a/include/asm-generic/atomic-long.h ++++ b/include/asm-generic/atomic-long.h +@@ -22,6 +22,12 @@ + + typedef atomic64_t atomic_long_t; + ++#ifdef CONFIG_PAX_REFCOUNT ++typedef atomic64_unchecked_t atomic_long_unchecked_t; ++#else ++typedef atomic64_t atomic_long_unchecked_t; ++#endif ++ + #define ATOMIC_LONG_INIT(i) ATOMIC64_INIT(i) + + static inline long atomic_long_read(atomic_long_t *l) +@@ -31,6 +37,15 @@ static inline long atomic_long_read(atomic_long_t *l) + return (long)atomic64_read(v); + } + ++#ifdef CONFIG_PAX_REFCOUNT ++static inline long atomic_long_read_unchecked(atomic_long_unchecked_t *l) ++{ ++ atomic64_unchecked_t *v = (atomic64_unchecked_t *)l; ++ ++ return (long)atomic64_read_unchecked(v); ++} ++#endif ++ + static inline void atomic_long_set(atomic_long_t *l, long i) + { + atomic64_t *v = (atomic64_t *)l; +@@ -38,6 +53,15 @@ static inline void atomic_long_set(atomic_long_t *l, long i) + atomic64_set(v, i); + } + ++#ifdef CONFIG_PAX_REFCOUNT ++static inline void atomic_long_set_unchecked(atomic_long_unchecked_t *l, long i) ++{ ++ atomic64_unchecked_t *v = (atomic64_unchecked_t *)l; ++ ++ atomic64_set_unchecked(v, i); ++} ++#endif ++ + static inline void atomic_long_inc(atomic_long_t *l) + { + atomic64_t *v = (atomic64_t *)l; +@@ -45,6 +69,15 @@ static inline void atomic_long_inc(atomic_long_t *l) + atomic64_inc(v); + } + ++#ifdef CONFIG_PAX_REFCOUNT ++static inline void atomic_long_inc_unchecked(atomic_long_unchecked_t *l) ++{ ++ atomic64_unchecked_t *v = (atomic64_unchecked_t *)l; ++ ++ atomic64_inc_unchecked(v); ++} ++#endif ++ + static inline void atomic_long_dec(atomic_long_t *l) + { + atomic64_t *v = (atomic64_t *)l; +@@ -52,6 +85,15 @@ static inline void atomic_long_dec(atomic_long_t *l) + atomic64_dec(v); + } + ++#ifdef CONFIG_PAX_REFCOUNT ++static inline void atomic_long_dec_unchecked(atomic_long_unchecked_t *l) ++{ ++ atomic64_unchecked_t *v = (atomic64_unchecked_t *)l; ++ ++ atomic64_dec_unchecked(v); ++} ++#endif ++ + static inline void atomic_long_add(long i, atomic_long_t *l) + { + atomic64_t *v = (atomic64_t *)l; +@@ -59,6 +101,15 @@ static inline void atomic_long_add(long i, atomic_long_t *l) + atomic64_add(i, v); + } + ++#ifdef CONFIG_PAX_REFCOUNT ++static inline void atomic_long_add_unchecked(long i, atomic_long_unchecked_t *l) ++{ ++ atomic64_unchecked_t *v = (atomic64_unchecked_t *)l; ++ ++ atomic64_add_unchecked(i, v); ++} ++#endif ++ + static inline void atomic_long_sub(long i, atomic_long_t *l) + { + atomic64_t *v = (atomic64_t *)l; +@@ -66,6 +117,15 @@ static inline void atomic_long_sub(long i, atomic_long_t *l) + atomic64_sub(i, v); + } + ++#ifdef CONFIG_PAX_REFCOUNT ++static inline void atomic_long_sub_unchecked(long i, atomic_long_unchecked_t *l) ++{ ++ atomic64_unchecked_t *v = (atomic64_unchecked_t *)l; ++ ++ atomic64_sub_unchecked(i, v); ++} ++#endif ++ + static inline int atomic_long_sub_and_test(long i, atomic_long_t *l) + { + atomic64_t *v = (atomic64_t *)l; +@@ -115,6 +175,15 @@ static inline long atomic_long_inc_return(atomic_long_t *l) + return (long)atomic64_inc_return(v); + } + ++#ifdef CONFIG_PAX_REFCOUNT ++static inline long atomic_long_inc_return_unchecked(atomic_long_unchecked_t *l) ++{ ++ atomic64_unchecked_t *v = (atomic64_unchecked_t *)l; ++ ++ return (long)atomic64_inc_return_unchecked(v); ++} ++#endif ++ + static inline long atomic_long_dec_return(atomic_long_t *l) + { + atomic64_t *v = (atomic64_t *)l; +@@ -140,6 +209,12 @@ static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u) + + typedef atomic_t atomic_long_t; + ++#ifdef CONFIG_PAX_REFCOUNT ++typedef atomic_unchecked_t atomic_long_unchecked_t; ++#else ++typedef atomic_t atomic_long_unchecked_t; ++#endif ++ + #define ATOMIC_LONG_INIT(i) ATOMIC_INIT(i) + static inline long atomic_long_read(atomic_long_t *l) + { +@@ -148,6 +223,15 @@ static inline long atomic_long_read(atomic_long_t *l) + return (long)atomic_read(v); + } + ++#ifdef CONFIG_PAX_REFCOUNT ++static inline long atomic_long_read_unchecked(atomic_long_unchecked_t *l) ++{ ++ atomic_unchecked_t *v = (atomic_unchecked_t *)l; ++ ++ return (long)atomic_read_unchecked(v); ++} ++#endif ++ + static inline void atomic_long_set(atomic_long_t *l, long i) + { + atomic_t *v = (atomic_t *)l; +@@ -155,6 +239,15 @@ static inline void atomic_long_set(atomic_long_t *l, long i) + atomic_set(v, i); + } + ++#ifdef CONFIG_PAX_REFCOUNT ++static inline void atomic_long_set_unchecked(atomic_long_unchecked_t *l, long i) ++{ ++ atomic_unchecked_t *v = (atomic_unchecked_t *)l; ++ ++ atomic_set_unchecked(v, i); ++} ++#endif ++ + static inline void atomic_long_inc(atomic_long_t *l) + { + atomic_t *v = (atomic_t *)l; +@@ -162,6 +255,15 @@ static inline void atomic_long_inc(atomic_long_t *l) + atomic_inc(v); + } + ++#ifdef CONFIG_PAX_REFCOUNT ++static inline void atomic_long_inc_unchecked(atomic_long_unchecked_t *l) ++{ ++ atomic_unchecked_t *v = (atomic_unchecked_t *)l; ++ ++ atomic_inc_unchecked(v); ++} ++#endif ++ + static inline void atomic_long_dec(atomic_long_t *l) + { + atomic_t *v = (atomic_t *)l; +@@ -169,6 +271,15 @@ static inline void atomic_long_dec(atomic_long_t *l) + atomic_dec(v); + } + ++#ifdef CONFIG_PAX_REFCOUNT ++static inline void atomic_long_dec_unchecked(atomic_long_unchecked_t *l) ++{ ++ atomic_unchecked_t *v = (atomic_unchecked_t *)l; ++ ++ atomic_dec_unchecked(v); ++} ++#endif ++ + static inline void atomic_long_add(long i, atomic_long_t *l) + { + atomic_t *v = (atomic_t *)l; +@@ -176,6 +287,15 @@ static inline void atomic_long_add(long i, atomic_long_t *l) + atomic_add(i, v); + } + ++#ifdef CONFIG_PAX_REFCOUNT ++static inline void atomic_long_add_unchecked(long i, atomic_long_unchecked_t *l) ++{ ++ atomic_unchecked_t *v = (atomic_unchecked_t *)l; ++ ++ atomic_add_unchecked(i, v); ++} ++#endif ++ + static inline void atomic_long_sub(long i, atomic_long_t *l) + { + atomic_t *v = (atomic_t *)l; +@@ -183,6 +303,15 @@ static inline void atomic_long_sub(long i, atomic_long_t *l) + atomic_sub(i, v); + } + ++#ifdef CONFIG_PAX_REFCOUNT ++static inline void atomic_long_sub_unchecked(long i, atomic_long_unchecked_t *l) ++{ ++ atomic_unchecked_t *v = (atomic_unchecked_t *)l; ++ ++ atomic_sub_unchecked(i, v); ++} ++#endif ++ + static inline int atomic_long_sub_and_test(long i, atomic_long_t *l) + { + atomic_t *v = (atomic_t *)l; +@@ -232,6 +361,15 @@ static inline long atomic_long_inc_return(atomic_long_t *l) + return (long)atomic_inc_return(v); + } + ++#ifdef CONFIG_PAX_REFCOUNT ++static inline long atomic_long_inc_return_unchecked(atomic_long_unchecked_t *l) ++{ ++ atomic_unchecked_t *v = (atomic_unchecked_t *)l; ++ ++ return (long)atomic_inc_return_unchecked(v); ++} ++#endif ++ + static inline long atomic_long_dec_return(atomic_long_t *l) + { + atomic_t *v = (atomic_t *)l; +@@ -255,4 +393,49 @@ static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u) + + #endif /* BITS_PER_LONG == 64 */ + ++#ifdef CONFIG_PAX_REFCOUNT ++static inline void pax_refcount_needs_these_functions(void) ++{ ++ atomic_read_unchecked((atomic_unchecked_t *)NULL); ++ atomic_set_unchecked((atomic_unchecked_t *)NULL, 0); ++ atomic_add_unchecked(0, (atomic_unchecked_t *)NULL); ++ atomic_sub_unchecked(0, (atomic_unchecked_t *)NULL); ++ atomic_inc_unchecked((atomic_unchecked_t *)NULL); ++ (void)atomic_inc_and_test_unchecked((atomic_unchecked_t *)NULL); ++ atomic_inc_return_unchecked((atomic_unchecked_t *)NULL); ++ atomic_add_return_unchecked(0, (atomic_unchecked_t *)NULL); ++ atomic_dec_unchecked((atomic_unchecked_t *)NULL); ++ atomic_cmpxchg_unchecked((atomic_unchecked_t *)NULL, 0, 0); ++ (void)atomic_xchg_unchecked((atomic_unchecked_t *)NULL, 0); ++ ++ atomic_long_read_unchecked((atomic_long_unchecked_t *)NULL); ++ atomic_long_set_unchecked((atomic_long_unchecked_t *)NULL, 0); ++ atomic_long_add_unchecked(0, (atomic_long_unchecked_t *)NULL); ++ atomic_long_sub_unchecked(0, (atomic_long_unchecked_t *)NULL); ++ atomic_long_inc_unchecked((atomic_long_unchecked_t *)NULL); ++ atomic_long_inc_return_unchecked((atomic_long_unchecked_t *)NULL); ++ atomic_long_dec_unchecked((atomic_long_unchecked_t *)NULL); ++} ++#else ++#define atomic_read_unchecked(v) atomic_read(v) ++#define atomic_set_unchecked(v, i) atomic_set((v), (i)) ++#define atomic_add_unchecked(i, v) atomic_add((i), (v)) ++#define atomic_sub_unchecked(i, v) atomic_sub((i), (v)) ++#define atomic_inc_unchecked(v) atomic_inc(v) ++#define atomic_inc_and_test_unchecked(v) atomic_inc_and_test(v) ++#define atomic_inc_return_unchecked(v) atomic_inc_return(v) ++#define atomic_add_return_unchecked(i, v) atomic_add_return((i), (v)) ++#define atomic_dec_unchecked(v) atomic_dec(v) ++#define atomic_cmpxchg_unchecked(v, o, n) atomic_cmpxchg((v), (o), (n)) ++#define atomic_xchg_unchecked(v, i) atomic_xchg((v), (i)) ++ ++#define atomic_long_read_unchecked(v) atomic_long_read(v) ++#define atomic_long_set_unchecked(v, i) atomic_long_set((v), (i)) ++#define atomic_long_add_unchecked(i, v) atomic_long_add((i), (v)) ++#define atomic_long_sub_unchecked(i, v) atomic_long_sub((i), (v)) ++#define atomic_long_inc_unchecked(v) atomic_long_inc(v) ++#define atomic_long_inc_return_unchecked(v) atomic_long_inc_return(v) ++#define atomic_long_dec_unchecked(v) atomic_long_dec(v) ++#endif ++ + #endif /* _ASM_GENERIC_ATOMIC_LONG_H */ +diff --git a/include/asm-generic/atomic64.h b/include/asm-generic/atomic64.h +index b18ce4f..2ee2843 100644 +--- a/include/asm-generic/atomic64.h ++++ b/include/asm-generic/atomic64.h +@@ -16,6 +16,8 @@ typedef struct { + long long counter; + } atomic64_t; + ++typedef atomic64_t atomic64_unchecked_t; ++ + #define ATOMIC64_INIT(i) { (i) } + + extern long long atomic64_read(const atomic64_t *v); +@@ -39,4 +41,14 @@ extern int atomic64_add_unless(atomic64_t *v, long long a, long long u); + #define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0) + #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1LL, 0LL) + ++#define atomic64_read_unchecked(v) atomic64_read(v) ++#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) ++#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) ++#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) ++#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) ++#define atomic64_inc_unchecked(v) atomic64_inc(v) ++#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) ++#define atomic64_dec_unchecked(v) atomic64_dec(v) ++#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) ++ + #endif /* _ASM_GENERIC_ATOMIC64_H */ +diff --git a/include/asm-generic/cache.h b/include/asm-generic/cache.h +index 1bfcfe5..e04c5c9 100644 +--- a/include/asm-generic/cache.h ++++ b/include/asm-generic/cache.h +@@ -6,7 +6,7 @@ + * cache lines need to provide their own cache.h. + */ + +-#define L1_CACHE_SHIFT 5 +-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ++#define L1_CACHE_SHIFT 5UL ++#define L1_CACHE_BYTES (1UL << L1_CACHE_SHIFT) + + #endif /* __ASM_GENERIC_CACHE_H */ +diff --git a/include/asm-generic/emergency-restart.h b/include/asm-generic/emergency-restart.h +index 0d68a1e..b74a761 100644 +--- a/include/asm-generic/emergency-restart.h ++++ b/include/asm-generic/emergency-restart.h +@@ -1,7 +1,7 @@ + #ifndef _ASM_GENERIC_EMERGENCY_RESTART_H + #define _ASM_GENERIC_EMERGENCY_RESTART_H + +-static inline void machine_emergency_restart(void) ++static inline __noreturn void machine_emergency_restart(void) + { + machine_restart(NULL); + } +diff --git a/include/asm-generic/kmap_types.h b/include/asm-generic/kmap_types.h +index 0232ccb..13d9165 100644 +--- a/include/asm-generic/kmap_types.h ++++ b/include/asm-generic/kmap_types.h +@@ -29,10 +29,11 @@ KMAP_D(16) KM_IRQ_PTE, + KMAP_D(17) KM_NMI, + KMAP_D(18) KM_NMI_PTE, + KMAP_D(19) KM_KDB, ++KMAP_D(20) KM_CLEARPAGE, + /* + * Remember to update debug_kmap_atomic() when adding new kmap types! + */ +-KMAP_D(20) KM_TYPE_NR ++KMAP_D(21) KM_TYPE_NR + }; + + #undef KMAP_D +diff --git a/include/asm-generic/local.h b/include/asm-generic/local.h +index 9ceb03b..2efbcbd 100644 +--- a/include/asm-generic/local.h ++++ b/include/asm-generic/local.h +@@ -39,6 +39,7 @@ typedef struct + #define local_add_return(i, l) atomic_long_add_return((i), (&(l)->a)) + #define local_sub_return(i, l) atomic_long_sub_return((i), (&(l)->a)) + #define local_inc_return(l) atomic_long_inc_return(&(l)->a) ++#define local_dec_return(l) atomic_long_dec_return(&(l)->a) + + #define local_cmpxchg(l, o, n) atomic_long_cmpxchg((&(l)->a), (o), (n)) + #define local_xchg(l, n) atomic_long_xchg((&(l)->a), (n)) +diff --git a/include/asm-generic/pgtable-nopmd.h b/include/asm-generic/pgtable-nopmd.h +index 725612b..9cc513a 100644 +--- a/include/asm-generic/pgtable-nopmd.h ++++ b/include/asm-generic/pgtable-nopmd.h +@@ -1,14 +1,19 @@ + #ifndef _PGTABLE_NOPMD_H + #define _PGTABLE_NOPMD_H + +-#ifndef __ASSEMBLY__ +- + #include <asm-generic/pgtable-nopud.h> + +-struct mm_struct; +- + #define __PAGETABLE_PMD_FOLDED + ++#define PMD_SHIFT PUD_SHIFT ++#define PTRS_PER_PMD 1 ++#define PMD_SIZE (_AC(1,UL) << PMD_SHIFT) ++#define PMD_MASK (~(PMD_SIZE-1)) ++ ++#ifndef __ASSEMBLY__ ++ ++struct mm_struct; ++ + /* + * Having the pmd type consist of a pud gets the size right, and allows + * us to conceptually access the pud entry that this pmd is folded into +@@ -16,11 +21,6 @@ struct mm_struct; + */ + typedef struct { pud_t pud; } pmd_t; + +-#define PMD_SHIFT PUD_SHIFT +-#define PTRS_PER_PMD 1 +-#define PMD_SIZE (1UL << PMD_SHIFT) +-#define PMD_MASK (~(PMD_SIZE-1)) +- + /* + * The "pud_xxx()" functions here are trivial for a folded two-level + * setup: the pmd is never bad, and a pmd always exists (as it's folded +diff --git a/include/asm-generic/pgtable-nopud.h b/include/asm-generic/pgtable-nopud.h +index 810431d..0ec4804f 100644 +--- a/include/asm-generic/pgtable-nopud.h ++++ b/include/asm-generic/pgtable-nopud.h +@@ -1,10 +1,15 @@ + #ifndef _PGTABLE_NOPUD_H + #define _PGTABLE_NOPUD_H + +-#ifndef __ASSEMBLY__ +- + #define __PAGETABLE_PUD_FOLDED + ++#define PUD_SHIFT PGDIR_SHIFT ++#define PTRS_PER_PUD 1 ++#define PUD_SIZE (_AC(1,UL) << PUD_SHIFT) ++#define PUD_MASK (~(PUD_SIZE-1)) ++ ++#ifndef __ASSEMBLY__ ++ + /* + * Having the pud type consist of a pgd gets the size right, and allows + * us to conceptually access the pgd entry that this pud is folded into +@@ -12,11 +17,6 @@ + */ + typedef struct { pgd_t pgd; } pud_t; + +-#define PUD_SHIFT PGDIR_SHIFT +-#define PTRS_PER_PUD 1 +-#define PUD_SIZE (1UL << PUD_SHIFT) +-#define PUD_MASK (~(PUD_SIZE-1)) +- + /* + * The "pgd_xxx()" functions here are trivial for a folded two-level + * setup: the pud is never bad, and a pud always exists (as it's folded +@@ -29,6 +29,7 @@ static inline void pgd_clear(pgd_t *pgd) { } + #define pud_ERROR(pud) (pgd_ERROR((pud).pgd)) + + #define pgd_populate(mm, pgd, pud) do { } while (0) ++#define pgd_populate_kernel(mm, pgd, pud) do { } while (0) + /* + * (puds are folded into pgds so this doesn't get actually called, + * but the define is needed for a generic inline function.) +diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h +index c7ec2cd..909d125 100644 +--- a/include/asm-generic/pgtable.h ++++ b/include/asm-generic/pgtable.h +@@ -531,6 +531,14 @@ static inline int pmd_trans_unstable(pmd_t *pmd) + #endif + } + ++#ifndef __HAVE_ARCH_PAX_OPEN_KERNEL ++static inline unsigned long pax_open_kernel(void) { return 0; } ++#endif ++ ++#ifndef __HAVE_ARCH_PAX_CLOSE_KERNEL ++static inline unsigned long pax_close_kernel(void) { return 0; } ++#endif ++ + #endif /* CONFIG_MMU */ + + #endif /* !__ASSEMBLY__ */ +diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h +index 8aeadf6..f1dc019 100644 +--- a/include/asm-generic/vmlinux.lds.h ++++ b/include/asm-generic/vmlinux.lds.h +@@ -218,6 +218,7 @@ + .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \ + VMLINUX_SYMBOL(__start_rodata) = .; \ + *(.rodata) *(.rodata.*) \ ++ *(.data..read_only) \ + *(__vermagic) /* Kernel version magic */ \ + . = ALIGN(8); \ + VMLINUX_SYMBOL(__start___tracepoints_ptrs) = .; \ +@@ -716,17 +717,18 @@ + * section in the linker script will go there too. @phdr should have + * a leading colon. + * +- * Note that this macros defines __per_cpu_load as an absolute symbol. ++ * Note that this macros defines per_cpu_load as an absolute symbol. + * If there is no need to put the percpu section at a predetermined + * address, use PERCPU_SECTION. + */ + #define PERCPU_VADDR(cacheline, vaddr, phdr) \ +- VMLINUX_SYMBOL(__per_cpu_load) = .; \ +- .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load) \ ++ per_cpu_load = .; \ ++ .data..percpu vaddr : AT(VMLINUX_SYMBOL(per_cpu_load) \ + - LOAD_OFFSET) { \ ++ VMLINUX_SYMBOL(__per_cpu_load) = . + per_cpu_load; \ + PERCPU_INPUT(cacheline) \ + } phdr \ +- . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu); ++ . = VMLINUX_SYMBOL(per_cpu_load) + SIZEOF(.data..percpu); + + /** + * PERCPU_SECTION - define output section for percpu area, simple version +diff --git a/include/drm/drmP.h b/include/drm/drmP.h +index dd73104..fde86bd 100644 +--- a/include/drm/drmP.h ++++ b/include/drm/drmP.h +@@ -72,6 +72,7 @@ + #include <linux/workqueue.h> + #include <linux/poll.h> + #include <asm/pgalloc.h> ++#include <asm/local.h> + #include "drm.h" + + #include <linux/idr.h> +@@ -1074,7 +1075,7 @@ struct drm_device { + + /** \name Usage Counters */ + /*@{ */ +- int open_count; /**< Outstanding files open */ ++ local_t open_count; /**< Outstanding files open */ + atomic_t ioctl_count; /**< Outstanding IOCTLs pending */ + atomic_t vma_count; /**< Outstanding vma areas open */ + int buf_use; /**< Buffers in use -- cannot alloc */ +@@ -1085,7 +1086,7 @@ struct drm_device { + /*@{ */ + unsigned long counters; + enum drm_stat_type types[15]; +- atomic_t counts[15]; ++ atomic_unchecked_t counts[15]; + /*@} */ + + struct list_head filelist; +diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h +index 37515d1..34fa8b0 100644 +--- a/include/drm/drm_crtc_helper.h ++++ b/include/drm/drm_crtc_helper.h +@@ -74,7 +74,7 @@ struct drm_crtc_helper_funcs { + + /* disable crtc when not in use - more explicit than dpms off */ + void (*disable)(struct drm_crtc *crtc); +-}; ++} __no_const; + + struct drm_encoder_helper_funcs { + void (*dpms)(struct drm_encoder *encoder, int mode); +@@ -95,7 +95,7 @@ struct drm_encoder_helper_funcs { + struct drm_connector *connector); + /* disable encoder when not in use - more explicit than dpms off */ + void (*disable)(struct drm_encoder *encoder); +-}; ++} __no_const; + + struct drm_connector_helper_funcs { + int (*get_modes)(struct drm_connector *connector); +diff --git a/include/drm/ttm/ttm_memory.h b/include/drm/ttm/ttm_memory.h +index d6d1da4..fdd1ac5 100644 +--- a/include/drm/ttm/ttm_memory.h ++++ b/include/drm/ttm/ttm_memory.h +@@ -48,7 +48,7 @@ + + struct ttm_mem_shrink { + int (*do_shrink) (struct ttm_mem_shrink *); +-}; ++} __no_const; + + /** + * struct ttm_mem_global - Global memory accounting structure. +diff --git a/include/linux/a.out.h b/include/linux/a.out.h +index e86dfca..40cc55f 100644 +--- a/include/linux/a.out.h ++++ b/include/linux/a.out.h +@@ -39,6 +39,14 @@ enum machine_type { + M_MIPS2 = 152 /* MIPS R6000/R4000 binary */ + }; + ++/* Constants for the N_FLAGS field */ ++#define F_PAX_PAGEEXEC 1 /* Paging based non-executable pages */ ++#define F_PAX_EMUTRAMP 2 /* Emulate trampolines */ ++#define F_PAX_MPROTECT 4 /* Restrict mprotect() */ ++#define F_PAX_RANDMMAP 8 /* Randomize mmap() base */ ++/*#define F_PAX_RANDEXEC 16*/ /* Randomize ET_EXEC base */ ++#define F_PAX_SEGMEXEC 32 /* Segmentation based non-executable pages */ ++ + #if !defined (N_MAGIC) + #define N_MAGIC(exec) ((exec).a_info & 0xffff) + #endif +diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h +index 06fd4bb..1caec0d 100644 +--- a/include/linux/atmdev.h ++++ b/include/linux/atmdev.h +@@ -237,7 +237,7 @@ struct compat_atm_iobuf { + #endif + + struct k_atm_aal_stats { +-#define __HANDLE_ITEM(i) atomic_t i ++#define __HANDLE_ITEM(i) atomic_unchecked_t i + __AAL_STAT_ITEMS + #undef __HANDLE_ITEM + }; +diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h +index 366422b..1fa7f84 100644 +--- a/include/linux/binfmts.h ++++ b/include/linux/binfmts.h +@@ -89,6 +89,7 @@ struct linux_binfmt { + int (*load_binary)(struct linux_binprm *, struct pt_regs * regs); + int (*load_shlib)(struct file *); + int (*core_dump)(struct coredump_params *cprm); ++ void (*handle_mprotect)(struct vm_area_struct *vma, unsigned long newflags); + unsigned long min_coredump; /* minimal dump size */ + }; + +diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h +index 4d4ac24..2c3ccce 100644 +--- a/include/linux/blkdev.h ++++ b/include/linux/blkdev.h +@@ -1376,7 +1376,7 @@ struct block_device_operations { + /* this callback is with swap_lock and sometimes page table lock held */ + void (*swap_slot_free_notify) (struct block_device *, unsigned long); + struct module *owner; +-}; ++} __do_const; + + extern int __blkdev_driver_ioctl(struct block_device *, fmode_t, unsigned int, + unsigned long); +diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h +index 4d1a074..88f929a 100644 +--- a/include/linux/blktrace_api.h ++++ b/include/linux/blktrace_api.h +@@ -162,7 +162,7 @@ struct blk_trace { + struct dentry *dir; + struct dentry *dropped_file; + struct dentry *msg_file; +- atomic_t dropped; ++ atomic_unchecked_t dropped; + }; + + extern int blk_trace_ioctl(struct block_device *, unsigned, char __user *); +diff --git a/include/linux/byteorder/little_endian.h b/include/linux/byteorder/little_endian.h +index 83195fb..0b0f77d 100644 +--- a/include/linux/byteorder/little_endian.h ++++ b/include/linux/byteorder/little_endian.h +@@ -42,51 +42,51 @@ + + static inline __le64 __cpu_to_le64p(const __u64 *p) + { +- return (__force __le64)*p; ++ return (__force const __le64)*p; + } + static inline __u64 __le64_to_cpup(const __le64 *p) + { +- return (__force __u64)*p; ++ return (__force const __u64)*p; + } + static inline __le32 __cpu_to_le32p(const __u32 *p) + { +- return (__force __le32)*p; ++ return (__force const __le32)*p; + } + static inline __u32 __le32_to_cpup(const __le32 *p) + { +- return (__force __u32)*p; ++ return (__force const __u32)*p; + } + static inline __le16 __cpu_to_le16p(const __u16 *p) + { +- return (__force __le16)*p; ++ return (__force const __le16)*p; + } + static inline __u16 __le16_to_cpup(const __le16 *p) + { +- return (__force __u16)*p; ++ return (__force const __u16)*p; + } + static inline __be64 __cpu_to_be64p(const __u64 *p) + { +- return (__force __be64)__swab64p(p); ++ return (__force const __be64)__swab64p(p); + } + static inline __u64 __be64_to_cpup(const __be64 *p) + { +- return __swab64p((__u64 *)p); ++ return __swab64p((const __u64 *)p); + } + static inline __be32 __cpu_to_be32p(const __u32 *p) + { +- return (__force __be32)__swab32p(p); ++ return (__force const __be32)__swab32p(p); + } + static inline __u32 __be32_to_cpup(const __be32 *p) + { +- return __swab32p((__u32 *)p); ++ return __swab32p((const __u32 *)p); + } + static inline __be16 __cpu_to_be16p(const __u16 *p) + { +- return (__force __be16)__swab16p(p); ++ return (__force const __be16)__swab16p(p); + } + static inline __u16 __be16_to_cpup(const __be16 *p) + { +- return __swab16p((__u16 *)p); ++ return __swab16p((const __u16 *)p); + } + #define __cpu_to_le64s(x) do { (void)(x); } while (0) + #define __le64_to_cpus(x) do { (void)(x); } while (0) +diff --git a/include/linux/cache.h b/include/linux/cache.h +index 4c57065..4307975 100644 +--- a/include/linux/cache.h ++++ b/include/linux/cache.h +@@ -16,6 +16,10 @@ + #define __read_mostly + #endif + ++#ifndef __read_only ++#define __read_only __read_mostly ++#endif ++ + #ifndef ____cacheline_aligned + #define ____cacheline_aligned __attribute__((__aligned__(SMP_CACHE_BYTES))) + #endif +diff --git a/include/linux/capability.h b/include/linux/capability.h +index 12d52de..b5f7fa7 100644 +--- a/include/linux/capability.h ++++ b/include/linux/capability.h +@@ -548,6 +548,8 @@ extern bool has_ns_capability_noaudit(struct task_struct *t, + extern bool capable(int cap); + extern bool ns_capable(struct user_namespace *ns, int cap); + extern bool nsown_capable(int cap); ++extern bool capable_nolog(int cap); ++extern bool ns_capable_nolog(struct user_namespace *ns, int cap); + + /* audit system wants to get cap info from files as well */ + extern int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps); +diff --git a/include/linux/cleancache.h b/include/linux/cleancache.h +index 42e55de..1cd0e66 100644 +--- a/include/linux/cleancache.h ++++ b/include/linux/cleancache.h +@@ -31,7 +31,7 @@ struct cleancache_ops { + void (*invalidate_page)(int, struct cleancache_filekey, pgoff_t); + void (*invalidate_inode)(int, struct cleancache_filekey); + void (*invalidate_fs)(int); +-}; ++} __no_const; + + extern struct cleancache_ops + cleancache_register_ops(struct cleancache_ops *ops); +diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h +index 2f40791..a62d196 100644 +--- a/include/linux/compiler-gcc4.h ++++ b/include/linux/compiler-gcc4.h +@@ -32,6 +32,16 @@ + #define __linktime_error(message) __attribute__((__error__(message))) + + #if __GNUC_MINOR__ >= 5 ++ ++#ifdef CONSTIFY_PLUGIN ++#define __no_const __attribute__((no_const)) ++#define __do_const __attribute__((do_const)) ++#endif ++ ++#ifdef SIZE_OVERFLOW_PLUGIN ++#define __size_overflow(...) __attribute__((size_overflow(__VA_ARGS__))) ++#endif ++ + /* + * Mark a position in code as unreachable. This can be used to + * suppress control flow warnings after asm blocks that transfer +@@ -47,6 +57,11 @@ + #define __noclone __attribute__((__noclone__)) + + #endif ++ ++#define __alloc_size(...) __attribute((alloc_size(__VA_ARGS__))) ++#define __bos(ptr, arg) __builtin_object_size((ptr), (arg)) ++#define __bos0(ptr) __bos((ptr), 0) ++#define __bos1(ptr) __bos((ptr), 1) + #endif + + #if __GNUC_MINOR__ > 0 +diff --git a/include/linux/compiler.h b/include/linux/compiler.h +index 923d093..726c17f 100644 +--- a/include/linux/compiler.h ++++ b/include/linux/compiler.h +@@ -5,31 +5,62 @@ + + #ifdef __CHECKER__ + # define __user __attribute__((noderef, address_space(1))) ++# define __force_user __force __user + # define __kernel __attribute__((address_space(0))) ++# define __force_kernel __force __kernel + # define __safe __attribute__((safe)) + # define __force __attribute__((force)) + # define __nocast __attribute__((nocast)) + # define __iomem __attribute__((noderef, address_space(2))) ++# define __force_iomem __force __iomem + # define __acquires(x) __attribute__((context(x,0,1))) + # define __releases(x) __attribute__((context(x,1,0))) + # define __acquire(x) __context__(x,1) + # define __release(x) __context__(x,-1) + # define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0) + # define __percpu __attribute__((noderef, address_space(3))) ++# define __force_percpu __force __percpu + #ifdef CONFIG_SPARSE_RCU_POINTER + # define __rcu __attribute__((noderef, address_space(4))) ++# define __force_rcu __force __rcu + #else + # define __rcu ++# define __force_rcu + #endif + extern void __chk_user_ptr(const volatile void __user *); + extern void __chk_io_ptr(const volatile void __iomem *); ++#elif defined(CHECKER_PLUGIN) ++//# define __user ++//# define __force_user ++//# define __kernel ++//# define __force_kernel ++# define __safe ++# define __force ++# define __nocast ++# define __iomem ++# define __force_iomem ++# define __chk_user_ptr(x) (void)0 ++# define __chk_io_ptr(x) (void)0 ++# define __builtin_warning(x, y...) (1) ++# define __acquires(x) ++# define __releases(x) ++# define __acquire(x) (void)0 ++# define __release(x) (void)0 ++# define __cond_lock(x,c) (c) ++# define __percpu ++# define __force_percpu ++# define __rcu ++# define __force_rcu + #else + # define __user ++# define __force_user + # define __kernel ++# define __force_kernel + # define __safe + # define __force + # define __nocast + # define __iomem ++# define __force_iomem + # define __chk_user_ptr(x) (void)0 + # define __chk_io_ptr(x) (void)0 + # define __builtin_warning(x, y...) (1) +@@ -39,7 +70,9 @@ extern void __chk_io_ptr(const volatile void __iomem *); + # define __release(x) (void)0 + # define __cond_lock(x,c) (c) + # define __percpu ++# define __force_percpu + # define __rcu ++# define __force_rcu + #endif + + #ifdef __KERNEL__ +@@ -264,6 +297,18 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect); + # define __attribute_const__ /* unimplemented */ + #endif + ++#ifndef __no_const ++# define __no_const ++#endif ++ ++#ifndef __do_const ++# define __do_const ++#endif ++ ++#ifndef __size_overflow ++# define __size_overflow(...) ++#endif ++ + /* + * Tell gcc if a function is cold. The compiler will assume any path + * directly leading to the call is unlikely. +@@ -273,6 +318,22 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect); + #define __cold + #endif + ++#ifndef __alloc_size ++#define __alloc_size(...) ++#endif ++ ++#ifndef __bos ++#define __bos(ptr, arg) ++#endif ++ ++#ifndef __bos0 ++#define __bos0(ptr) ++#endif ++ ++#ifndef __bos1 ++#define __bos1(ptr) ++#endif ++ + /* Simple shorthand for a section definition */ + #ifndef __section + # define __section(S) __attribute__ ((__section__(#S))) +@@ -308,6 +369,7 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect); + * use is to mediate communication between process-level code and irq/NMI + * handlers, all running on the same CPU. + */ +-#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x)) ++#define ACCESS_ONCE(x) (*(volatile const typeof(x) *)&(x)) ++#define ACCESS_ONCE_RW(x) (*(volatile typeof(x) *)&(x)) + + #endif /* __LINUX_COMPILER_H */ +diff --git a/include/linux/cred.h b/include/linux/cred.h +index adadf71..6af5560 100644 +--- a/include/linux/cred.h ++++ b/include/linux/cred.h +@@ -207,6 +207,9 @@ static inline void validate_creds_for_do_exit(struct task_struct *tsk) + static inline void validate_process_creds(void) + { + } ++static inline void validate_task_creds(struct task_struct *task) ++{ ++} + #endif + + /** +diff --git a/include/linux/crypto.h b/include/linux/crypto.h +index b92eadf..b4ecdc1 100644 +--- a/include/linux/crypto.h ++++ b/include/linux/crypto.h +@@ -373,7 +373,7 @@ struct cipher_tfm { + const u8 *key, unsigned int keylen); + void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src); + void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src); +-}; ++} __no_const; + + struct hash_tfm { + int (*init)(struct hash_desc *desc); +@@ -394,13 +394,13 @@ struct compress_tfm { + int (*cot_decompress)(struct crypto_tfm *tfm, + const u8 *src, unsigned int slen, + u8 *dst, unsigned int *dlen); +-}; ++} __no_const; + + struct rng_tfm { + int (*rng_gen_random)(struct crypto_rng *tfm, u8 *rdata, + unsigned int dlen); + int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen); +-}; ++} __no_const; + + #define crt_ablkcipher crt_u.ablkcipher + #define crt_aead crt_u.aead +diff --git a/include/linux/decompress/mm.h b/include/linux/decompress/mm.h +index 7925bf0..d5143d2 100644 +--- a/include/linux/decompress/mm.h ++++ b/include/linux/decompress/mm.h +@@ -77,7 +77,7 @@ static void free(void *where) + * warnings when not needed (indeed large_malloc / large_free are not + * needed by inflate */ + +-#define malloc(a) kmalloc(a, GFP_KERNEL) ++#define malloc(a) kmalloc((a), GFP_KERNEL) + #define free(a) kfree(a) + + #define large_malloc(a) vmalloc(a) +diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h +index dfc099e..e583e66 100644 +--- a/include/linux/dma-mapping.h ++++ b/include/linux/dma-mapping.h +@@ -51,7 +51,7 @@ struct dma_map_ops { + u64 (*get_required_mask)(struct device *dev); + #endif + int is_phys; +-}; ++} __do_const; + + #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) + +diff --git a/include/linux/efi.h b/include/linux/efi.h +index ec45ccd..9923c32 100644 +--- a/include/linux/efi.h ++++ b/include/linux/efi.h +@@ -635,7 +635,7 @@ struct efivar_operations { + efi_get_variable_t *get_variable; + efi_get_next_variable_t *get_next_variable; + efi_set_variable_t *set_variable; +-}; ++} __no_const; + + struct efivars { + /* +diff --git a/include/linux/elf.h b/include/linux/elf.h +index 999b4f5..57753b4 100644 +--- a/include/linux/elf.h ++++ b/include/linux/elf.h +@@ -40,6 +40,17 @@ typedef __s64 Elf64_Sxword; + #define PT_GNU_EH_FRAME 0x6474e550 + + #define PT_GNU_STACK (PT_LOOS + 0x474e551) ++#define PT_GNU_RELRO (PT_LOOS + 0x474e552) ++ ++#define PT_PAX_FLAGS (PT_LOOS + 0x5041580) ++ ++/* Constants for the e_flags field */ ++#define EF_PAX_PAGEEXEC 1 /* Paging based non-executable pages */ ++#define EF_PAX_EMUTRAMP 2 /* Emulate trampolines */ ++#define EF_PAX_MPROTECT 4 /* Restrict mprotect() */ ++#define EF_PAX_RANDMMAP 8 /* Randomize mmap() base */ ++/*#define EF_PAX_RANDEXEC 16*/ /* Randomize ET_EXEC base */ ++#define EF_PAX_SEGMEXEC 32 /* Segmentation based non-executable pages */ + + /* + * Extended Numbering +@@ -97,6 +108,8 @@ typedef __s64 Elf64_Sxword; + #define DT_DEBUG 21 + #define DT_TEXTREL 22 + #define DT_JMPREL 23 ++#define DT_FLAGS 30 ++ #define DF_TEXTREL 0x00000004 + #define DT_ENCODING 32 + #define OLD_DT_LOOS 0x60000000 + #define DT_LOOS 0x6000000d +@@ -243,6 +256,19 @@ typedef struct elf64_hdr { + #define PF_W 0x2 + #define PF_X 0x1 + ++#define PF_PAGEEXEC (1U << 4) /* Enable PAGEEXEC */ ++#define PF_NOPAGEEXEC (1U << 5) /* Disable PAGEEXEC */ ++#define PF_SEGMEXEC (1U << 6) /* Enable SEGMEXEC */ ++#define PF_NOSEGMEXEC (1U << 7) /* Disable SEGMEXEC */ ++#define PF_MPROTECT (1U << 8) /* Enable MPROTECT */ ++#define PF_NOMPROTECT (1U << 9) /* Disable MPROTECT */ ++/*#define PF_RANDEXEC (1U << 10)*/ /* Enable RANDEXEC */ ++/*#define PF_NORANDEXEC (1U << 11)*/ /* Disable RANDEXEC */ ++#define PF_EMUTRAMP (1U << 12) /* Enable EMUTRAMP */ ++#define PF_NOEMUTRAMP (1U << 13) /* Disable EMUTRAMP */ ++#define PF_RANDMMAP (1U << 14) /* Enable RANDMMAP */ ++#define PF_NORANDMMAP (1U << 15) /* Disable RANDMMAP */ ++ + typedef struct elf32_phdr{ + Elf32_Word p_type; + Elf32_Off p_offset; +@@ -335,6 +361,8 @@ typedef struct elf64_shdr { + #define EI_OSABI 7 + #define EI_PAD 8 + ++#define EI_PAX 14 ++ + #define ELFMAG0 0x7f /* EI_MAG */ + #define ELFMAG1 'E' + #define ELFMAG2 'L' +@@ -421,6 +449,7 @@ extern Elf32_Dyn _DYNAMIC []; + #define elf_note elf32_note + #define elf_addr_t Elf32_Off + #define Elf_Half Elf32_Half ++#define elf_dyn Elf32_Dyn + + #else + +@@ -431,6 +460,7 @@ extern Elf64_Dyn _DYNAMIC []; + #define elf_note elf64_note + #define elf_addr_t Elf64_Off + #define Elf_Half Elf64_Half ++#define elf_dyn Elf64_Dyn + + #endif + +diff --git a/include/linux/filter.h b/include/linux/filter.h +index 8eeb205..d59bfa2 100644 +--- a/include/linux/filter.h ++++ b/include/linux/filter.h +@@ -134,6 +134,7 @@ struct sock_fprog { /* Required for SO_ATTACH_FILTER. */ + + struct sk_buff; + struct sock; ++struct bpf_jit_work; + + struct sk_filter + { +@@ -141,6 +142,9 @@ struct sk_filter + unsigned int len; /* Number of filter blocks */ + unsigned int (*bpf_func)(const struct sk_buff *skb, + const struct sock_filter *filter); ++#ifdef CONFIG_BPF_JIT ++ struct bpf_jit_work *work; ++#endif + struct rcu_head rcu; + struct sock_filter insns[0]; + }; +diff --git a/include/linux/firewire.h b/include/linux/firewire.h +index cdc9b71..ce69fb5 100644 +--- a/include/linux/firewire.h ++++ b/include/linux/firewire.h +@@ -413,7 +413,7 @@ struct fw_iso_context { + union { + fw_iso_callback_t sc; + fw_iso_mc_callback_t mc; +- } callback; ++ } __no_const callback; + void *callback_data; + }; + +diff --git a/include/linux/fs.h b/include/linux/fs.h +index 25c40b9..1bfd4f4 100644 +--- a/include/linux/fs.h ++++ b/include/linux/fs.h +@@ -1634,7 +1634,8 @@ struct file_operations { + int (*setlease)(struct file *, long, struct file_lock **); + long (*fallocate)(struct file *file, int mode, loff_t offset, + loff_t len); +-}; ++} __do_const; ++typedef struct file_operations __no_const file_operations_no_const; + + struct inode_operations { + struct dentry * (*lookup) (struct inode *,struct dentry *, struct nameidata *); +diff --git a/include/linux/fs_struct.h b/include/linux/fs_struct.h +index 003dc0f..3c4ea97 100644 +--- a/include/linux/fs_struct.h ++++ b/include/linux/fs_struct.h +@@ -6,7 +6,7 @@ + #include <linux/seqlock.h> + + struct fs_struct { +- int users; ++ atomic_t users; + spinlock_t lock; + seqcount_t seq; + int umask; +diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h +index ce31408..b1ad003 100644 +--- a/include/linux/fscache-cache.h ++++ b/include/linux/fscache-cache.h +@@ -102,7 +102,7 @@ struct fscache_operation { + fscache_operation_release_t release; + }; + +-extern atomic_t fscache_op_debug_id; ++extern atomic_unchecked_t fscache_op_debug_id; + extern void fscache_op_work_func(struct work_struct *work); + + extern void fscache_enqueue_operation(struct fscache_operation *); +@@ -122,7 +122,7 @@ static inline void fscache_operation_init(struct fscache_operation *op, + { + INIT_WORK(&op->work, fscache_op_work_func); + atomic_set(&op->usage, 1); +- op->debug_id = atomic_inc_return(&fscache_op_debug_id); ++ op->debug_id = atomic_inc_return_unchecked(&fscache_op_debug_id); + op->processor = processor; + op->release = release; + INIT_LIST_HEAD(&op->pend_link); +diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h +index a6dfe69..569586df 100644 +--- a/include/linux/fsnotify.h ++++ b/include/linux/fsnotify.h +@@ -315,7 +315,7 @@ static inline void fsnotify_change(struct dentry *dentry, unsigned int ia_valid) + */ + static inline const unsigned char *fsnotify_oldname_init(const unsigned char *name) + { +- return kstrdup(name, GFP_KERNEL); ++ return (const unsigned char *)kstrdup((const char *)name, GFP_KERNEL); + } + + /* +diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h +index 91d0e0a3..035666b 100644 +--- a/include/linux/fsnotify_backend.h ++++ b/include/linux/fsnotify_backend.h +@@ -105,6 +105,7 @@ struct fsnotify_ops { + void (*freeing_mark)(struct fsnotify_mark *mark, struct fsnotify_group *group); + void (*free_event_priv)(struct fsnotify_event_private_data *priv); + }; ++typedef struct fsnotify_ops __no_const fsnotify_ops_no_const; + + /* + * A group is a "thing" that wants to receive notification about filesystem +diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h +index 176a939..1462211 100644 +--- a/include/linux/ftrace_event.h ++++ b/include/linux/ftrace_event.h +@@ -97,7 +97,7 @@ struct trace_event_functions { + trace_print_func raw; + trace_print_func hex; + trace_print_func binary; +-}; ++} __no_const; + + struct trace_event { + struct hlist_node node; +@@ -263,7 +263,7 @@ extern int trace_define_field(struct ftrace_event_call *call, const char *type, + extern int trace_add_event_call(struct ftrace_event_call *call); + extern void trace_remove_event_call(struct ftrace_event_call *call); + +-#define is_signed_type(type) (((type)(-1)) < 0) ++#define is_signed_type(type) (((type)(-1)) < (type)1) + + int trace_set_clr_event(const char *system, const char *event, int set); + +diff --git a/include/linux/genhd.h b/include/linux/genhd.h +index 017a7fb..33a8507 100644 +--- a/include/linux/genhd.h ++++ b/include/linux/genhd.h +@@ -185,7 +185,7 @@ struct gendisk { + struct kobject *slave_dir; + + struct timer_rand_state *random; +- atomic_t sync_io; /* RAID */ ++ atomic_unchecked_t sync_io; /* RAID */ + struct disk_events *ev; + #ifdef CONFIG_BLK_DEV_INTEGRITY + struct blk_integrity *integrity; +diff --git a/include/linux/gracl.h b/include/linux/gracl.h +new file mode 100644 +index 0000000..c938b1f +--- /dev/null ++++ b/include/linux/gracl.h +@@ -0,0 +1,319 @@ ++#ifndef GR_ACL_H ++#define GR_ACL_H ++ ++#include <linux/grdefs.h> ++#include <linux/resource.h> ++#include <linux/capability.h> ++#include <linux/dcache.h> ++#include <asm/resource.h> ++ ++/* Major status information */ ++ ++#define GR_VERSION "grsecurity 2.9.1" ++#define GRSECURITY_VERSION 0x2901 ++ ++enum { ++ GR_SHUTDOWN = 0, ++ GR_ENABLE = 1, ++ GR_SPROLE = 2, ++ GR_RELOAD = 3, ++ GR_SEGVMOD = 4, ++ GR_STATUS = 5, ++ GR_UNSPROLE = 6, ++ GR_PASSSET = 7, ++ GR_SPROLEPAM = 8, ++}; ++ ++/* Password setup definitions ++ * kernel/grhash.c */ ++enum { ++ GR_PW_LEN = 128, ++ GR_SALT_LEN = 16, ++ GR_SHA_LEN = 32, ++}; ++ ++enum { ++ GR_SPROLE_LEN = 64, ++}; ++ ++enum { ++ GR_NO_GLOB = 0, ++ GR_REG_GLOB, ++ GR_CREATE_GLOB ++}; ++ ++#define GR_NLIMITS 32 ++ ++/* Begin Data Structures */ ++ ++struct sprole_pw { ++ unsigned char *rolename; ++ unsigned char salt[GR_SALT_LEN]; ++ unsigned char sum[GR_SHA_LEN]; /* 256-bit SHA hash of the password */ ++}; ++ ++struct name_entry { ++ __u32 key; ++ ino_t inode; ++ dev_t device; ++ char *name; ++ __u16 len; ++ __u8 deleted; ++ struct name_entry *prev; ++ struct name_entry *next; ++}; ++ ++struct inodev_entry { ++ struct name_entry *nentry; ++ struct inodev_entry *prev; ++ struct inodev_entry *next; ++}; ++ ++struct acl_role_db { ++ struct acl_role_label **r_hash; ++ __u32 r_size; ++}; ++ ++struct inodev_db { ++ struct inodev_entry **i_hash; ++ __u32 i_size; ++}; ++ ++struct name_db { ++ struct name_entry **n_hash; ++ __u32 n_size; ++}; ++ ++struct crash_uid { ++ uid_t uid; ++ unsigned long expires; ++}; ++ ++struct gr_hash_struct { ++ void **table; ++ void **nametable; ++ void *first; ++ __u32 table_size; ++ __u32 used_size; ++ int type; ++}; ++ ++/* Userspace Grsecurity ACL data structures */ ++ ++struct acl_subject_label { ++ char *filename; ++ ino_t inode; ++ dev_t device; ++ __u32 mode; ++ kernel_cap_t cap_mask; ++ kernel_cap_t cap_lower; ++ kernel_cap_t cap_invert_audit; ++ ++ struct rlimit res[GR_NLIMITS]; ++ __u32 resmask; ++ ++ __u8 user_trans_type; ++ __u8 group_trans_type; ++ uid_t *user_transitions; ++ gid_t *group_transitions; ++ __u16 user_trans_num; ++ __u16 group_trans_num; ++ ++ __u32 sock_families[2]; ++ __u32 ip_proto[8]; ++ __u32 ip_type; ++ struct acl_ip_label **ips; ++ __u32 ip_num; ++ __u32 inaddr_any_override; ++ ++ __u32 crashes; ++ unsigned long expires; ++ ++ struct acl_subject_label *parent_subject; ++ struct gr_hash_struct *hash; ++ struct acl_subject_label *prev; ++ struct acl_subject_label *next; ++ ++ struct acl_object_label **obj_hash; ++ __u32 obj_hash_size; ++ __u16 pax_flags; ++}; ++ ++struct role_allowed_ip { ++ __u32 addr; ++ __u32 netmask; ++ ++ struct role_allowed_ip *prev; ++ struct role_allowed_ip *next; ++}; ++ ++struct role_transition { ++ char *rolename; ++ ++ struct role_transition *prev; ++ struct role_transition *next; ++}; ++ ++struct acl_role_label { ++ char *rolename; ++ uid_t uidgid; ++ __u16 roletype; ++ ++ __u16 auth_attempts; ++ unsigned long expires; ++ ++ struct acl_subject_label *root_label; ++ struct gr_hash_struct *hash; ++ ++ struct acl_role_label *prev; ++ struct acl_role_label *next; ++ ++ struct role_transition *transitions; ++ struct role_allowed_ip *allowed_ips; ++ uid_t *domain_children; ++ __u16 domain_child_num; ++ ++ umode_t umask; ++ ++ struct acl_subject_label **subj_hash; ++ __u32 subj_hash_size; ++}; ++ ++struct user_acl_role_db { ++ struct acl_role_label **r_table; ++ __u32 num_pointers; /* Number of allocations to track */ ++ __u32 num_roles; /* Number of roles */ ++ __u32 num_domain_children; /* Number of domain children */ ++ __u32 num_subjects; /* Number of subjects */ ++ __u32 num_objects; /* Number of objects */ ++}; ++ ++struct acl_object_label { ++ char *filename; ++ ino_t inode; ++ dev_t device; ++ __u32 mode; ++ ++ struct acl_subject_label *nested; ++ struct acl_object_label *globbed; ++ ++ /* next two structures not used */ ++ ++ struct acl_object_label *prev; ++ struct acl_object_label *next; ++}; ++ ++struct acl_ip_label { ++ char *iface; ++ __u32 addr; ++ __u32 netmask; ++ __u16 low, high; ++ __u8 mode; ++ __u32 type; ++ __u32 proto[8]; ++ ++ /* next two structures not used */ ++ ++ struct acl_ip_label *prev; ++ struct acl_ip_label *next; ++}; ++ ++struct gr_arg { ++ struct user_acl_role_db role_db; ++ unsigned char pw[GR_PW_LEN]; ++ unsigned char salt[GR_SALT_LEN]; ++ unsigned char sum[GR_SHA_LEN]; ++ unsigned char sp_role[GR_SPROLE_LEN]; ++ struct sprole_pw *sprole_pws; ++ dev_t segv_device; ++ ino_t segv_inode; ++ uid_t segv_uid; ++ __u16 num_sprole_pws; ++ __u16 mode; ++}; ++ ++struct gr_arg_wrapper { ++ struct gr_arg *arg; ++ __u32 version; ++ __u32 size; ++}; ++ ++struct subject_map { ++ struct acl_subject_label *user; ++ struct acl_subject_label *kernel; ++ struct subject_map *prev; ++ struct subject_map *next; ++}; ++ ++struct acl_subj_map_db { ++ struct subject_map **s_hash; ++ __u32 s_size; ++}; ++ ++/* End Data Structures Section */ ++ ++/* Hash functions generated by empirical testing by Brad Spengler ++ Makes good use of the low bits of the inode. Generally 0-1 times ++ in loop for successful match. 0-3 for unsuccessful match. ++ Shift/add algorithm with modulus of table size and an XOR*/ ++ ++static __inline__ unsigned int ++rhash(const uid_t uid, const __u16 type, const unsigned int sz) ++{ ++ return ((((uid + type) << (16 + type)) ^ uid) % sz); ++} ++ ++ static __inline__ unsigned int ++shash(const struct acl_subject_label *userp, const unsigned int sz) ++{ ++ return ((const unsigned long)userp % sz); ++} ++ ++static __inline__ unsigned int ++fhash(const ino_t ino, const dev_t dev, const unsigned int sz) ++{ ++ return (((ino + dev) ^ ((ino << 13) + (ino << 23) + (dev << 9))) % sz); ++} ++ ++static __inline__ unsigned int ++nhash(const char *name, const __u16 len, const unsigned int sz) ++{ ++ return full_name_hash((const unsigned char *)name, len) % sz; ++} ++ ++#define FOR_EACH_ROLE_START(role) \ ++ role = role_list; \ ++ while (role) { ++ ++#define FOR_EACH_ROLE_END(role) \ ++ role = role->prev; \ ++ } ++ ++#define FOR_EACH_SUBJECT_START(role,subj,iter) \ ++ subj = NULL; \ ++ iter = 0; \ ++ while (iter < role->subj_hash_size) { \ ++ if (subj == NULL) \ ++ subj = role->subj_hash[iter]; \ ++ if (subj == NULL) { \ ++ iter++; \ ++ continue; \ ++ } ++ ++#define FOR_EACH_SUBJECT_END(subj,iter) \ ++ subj = subj->next; \ ++ if (subj == NULL) \ ++ iter++; \ ++ } ++ ++ ++#define FOR_EACH_NESTED_SUBJECT_START(role,subj) \ ++ subj = role->hash->first; \ ++ while (subj != NULL) { ++ ++#define FOR_EACH_NESTED_SUBJECT_END(subj) \ ++ subj = subj->next; \ ++ } ++ ++#endif ++ +diff --git a/include/linux/gralloc.h b/include/linux/gralloc.h +new file mode 100644 +index 0000000..323ecf2 +--- /dev/null ++++ b/include/linux/gralloc.h +@@ -0,0 +1,9 @@ ++#ifndef __GRALLOC_H ++#define __GRALLOC_H ++ ++void acl_free_all(void); ++int acl_alloc_stack_init(unsigned long size); ++void *acl_alloc(unsigned long len); ++void *acl_alloc_num(unsigned long num, unsigned long len); ++ ++#endif +diff --git a/include/linux/grdefs.h b/include/linux/grdefs.h +new file mode 100644 +index 0000000..b30e9bc +--- /dev/null ++++ b/include/linux/grdefs.h +@@ -0,0 +1,140 @@ ++#ifndef GRDEFS_H ++#define GRDEFS_H ++ ++/* Begin grsecurity status declarations */ ++ ++enum { ++ GR_READY = 0x01, ++ GR_STATUS_INIT = 0x00 // disabled state ++}; ++ ++/* Begin ACL declarations */ ++ ++/* Role flags */ ++ ++enum { ++ GR_ROLE_USER = 0x0001, ++ GR_ROLE_GROUP = 0x0002, ++ GR_ROLE_DEFAULT = 0x0004, ++ GR_ROLE_SPECIAL = 0x0008, ++ GR_ROLE_AUTH = 0x0010, ++ GR_ROLE_NOPW = 0x0020, ++ GR_ROLE_GOD = 0x0040, ++ GR_ROLE_LEARN = 0x0080, ++ GR_ROLE_TPE = 0x0100, ++ GR_ROLE_DOMAIN = 0x0200, ++ GR_ROLE_PAM = 0x0400, ++ GR_ROLE_PERSIST = 0x0800 ++}; ++ ++/* ACL Subject and Object mode flags */ ++enum { ++ GR_DELETED = 0x80000000 ++}; ++ ++/* ACL Object-only mode flags */ ++enum { ++ GR_READ = 0x00000001, ++ GR_APPEND = 0x00000002, ++ GR_WRITE = 0x00000004, ++ GR_EXEC = 0x00000008, ++ GR_FIND = 0x00000010, ++ GR_INHERIT = 0x00000020, ++ GR_SETID = 0x00000040, ++ GR_CREATE = 0x00000080, ++ GR_DELETE = 0x00000100, ++ GR_LINK = 0x00000200, ++ GR_AUDIT_READ = 0x00000400, ++ GR_AUDIT_APPEND = 0x00000800, ++ GR_AUDIT_WRITE = 0x00001000, ++ GR_AUDIT_EXEC = 0x00002000, ++ GR_AUDIT_FIND = 0x00004000, ++ GR_AUDIT_INHERIT= 0x00008000, ++ GR_AUDIT_SETID = 0x00010000, ++ GR_AUDIT_CREATE = 0x00020000, ++ GR_AUDIT_DELETE = 0x00040000, ++ GR_AUDIT_LINK = 0x00080000, ++ GR_PTRACERD = 0x00100000, ++ GR_NOPTRACE = 0x00200000, ++ GR_SUPPRESS = 0x00400000, ++ GR_NOLEARN = 0x00800000, ++ GR_INIT_TRANSFER= 0x01000000 ++}; ++ ++#define GR_AUDITS (GR_AUDIT_READ | GR_AUDIT_WRITE | GR_AUDIT_APPEND | GR_AUDIT_EXEC | \ ++ GR_AUDIT_FIND | GR_AUDIT_INHERIT | GR_AUDIT_SETID | \ ++ GR_AUDIT_CREATE | GR_AUDIT_DELETE | GR_AUDIT_LINK) ++ ++/* ACL subject-only mode flags */ ++enum { ++ GR_KILL = 0x00000001, ++ GR_VIEW = 0x00000002, ++ GR_PROTECTED = 0x00000004, ++ GR_LEARN = 0x00000008, ++ GR_OVERRIDE = 0x00000010, ++ /* just a placeholder, this mode is only used in userspace */ ++ GR_DUMMY = 0x00000020, ++ GR_PROTSHM = 0x00000040, ++ GR_KILLPROC = 0x00000080, ++ GR_KILLIPPROC = 0x00000100, ++ /* just a placeholder, this mode is only used in userspace */ ++ GR_NOTROJAN = 0x00000200, ++ GR_PROTPROCFD = 0x00000400, ++ GR_PROCACCT = 0x00000800, ++ GR_RELAXPTRACE = 0x00001000, ++ GR_NESTED = 0x00002000, ++ GR_INHERITLEARN = 0x00004000, ++ GR_PROCFIND = 0x00008000, ++ GR_POVERRIDE = 0x00010000, ++ GR_KERNELAUTH = 0x00020000, ++ GR_ATSECURE = 0x00040000, ++ GR_SHMEXEC = 0x00080000 ++}; ++ ++enum { ++ GR_PAX_ENABLE_SEGMEXEC = 0x0001, ++ GR_PAX_ENABLE_PAGEEXEC = 0x0002, ++ GR_PAX_ENABLE_MPROTECT = 0x0004, ++ GR_PAX_ENABLE_RANDMMAP = 0x0008, ++ GR_PAX_ENABLE_EMUTRAMP = 0x0010, ++ GR_PAX_DISABLE_SEGMEXEC = 0x0100, ++ GR_PAX_DISABLE_PAGEEXEC = 0x0200, ++ GR_PAX_DISABLE_MPROTECT = 0x0400, ++ GR_PAX_DISABLE_RANDMMAP = 0x0800, ++ GR_PAX_DISABLE_EMUTRAMP = 0x1000, ++}; ++ ++enum { ++ GR_ID_USER = 0x01, ++ GR_ID_GROUP = 0x02, ++}; ++ ++enum { ++ GR_ID_ALLOW = 0x01, ++ GR_ID_DENY = 0x02, ++}; ++ ++#define GR_CRASH_RES 31 ++#define GR_UIDTABLE_MAX 500 ++ ++/* begin resource learning section */ ++enum { ++ GR_RLIM_CPU_BUMP = 60, ++ GR_RLIM_FSIZE_BUMP = 50000, ++ GR_RLIM_DATA_BUMP = 10000, ++ GR_RLIM_STACK_BUMP = 1000, ++ GR_RLIM_CORE_BUMP = 10000, ++ GR_RLIM_RSS_BUMP = 500000, ++ GR_RLIM_NPROC_BUMP = 1, ++ GR_RLIM_NOFILE_BUMP = 5, ++ GR_RLIM_MEMLOCK_BUMP = 50000, ++ GR_RLIM_AS_BUMP = 500000, ++ GR_RLIM_LOCKS_BUMP = 2, ++ GR_RLIM_SIGPENDING_BUMP = 5, ++ GR_RLIM_MSGQUEUE_BUMP = 10000, ++ GR_RLIM_NICE_BUMP = 1, ++ GR_RLIM_RTPRIO_BUMP = 1, ++ GR_RLIM_RTTIME_BUMP = 1000000 ++}; ++ ++#endif +diff --git a/include/linux/grinternal.h b/include/linux/grinternal.h +new file mode 100644 +index 0000000..c9292f7 +--- /dev/null ++++ b/include/linux/grinternal.h +@@ -0,0 +1,223 @@ ++#ifndef __GRINTERNAL_H ++#define __GRINTERNAL_H ++ ++#ifdef CONFIG_GRKERNSEC ++ ++#include <linux/fs.h> ++#include <linux/mnt_namespace.h> ++#include <linux/nsproxy.h> ++#include <linux/gracl.h> ++#include <linux/grdefs.h> ++#include <linux/grmsg.h> ++ ++void gr_add_learn_entry(const char *fmt, ...) ++ __attribute__ ((format (printf, 1, 2))); ++__u32 gr_search_file(const struct dentry *dentry, const __u32 mode, ++ const struct vfsmount *mnt); ++__u32 gr_check_create(const struct dentry *new_dentry, ++ const struct dentry *parent, ++ const struct vfsmount *mnt, const __u32 mode); ++int gr_check_protected_task(const struct task_struct *task); ++__u32 to_gr_audit(const __u32 reqmode); ++int gr_set_acls(const int type); ++int gr_apply_subject_to_task(struct task_struct *task); ++int gr_acl_is_enabled(void); ++char gr_roletype_to_char(void); ++ ++void gr_handle_alertkill(struct task_struct *task); ++char *gr_to_filename(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++char *gr_to_filename1(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++char *gr_to_filename2(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++char *gr_to_filename3(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++ ++extern int grsec_enable_ptrace_readexec; ++extern int grsec_enable_harden_ptrace; ++extern int grsec_enable_link; ++extern int grsec_enable_fifo; ++extern int grsec_enable_execve; ++extern int grsec_enable_shm; ++extern int grsec_enable_execlog; ++extern int grsec_enable_signal; ++extern int grsec_enable_audit_ptrace; ++extern int grsec_enable_forkfail; ++extern int grsec_enable_time; ++extern int grsec_enable_rofs; ++extern int grsec_enable_chroot_shmat; ++extern int grsec_enable_chroot_mount; ++extern int grsec_enable_chroot_double; ++extern int grsec_enable_chroot_pivot; ++extern int grsec_enable_chroot_chdir; ++extern int grsec_enable_chroot_chmod; ++extern int grsec_enable_chroot_mknod; ++extern int grsec_enable_chroot_fchdir; ++extern int grsec_enable_chroot_nice; ++extern int grsec_enable_chroot_execlog; ++extern int grsec_enable_chroot_caps; ++extern int grsec_enable_chroot_sysctl; ++extern int grsec_enable_chroot_unix; ++extern int grsec_enable_symlinkown; ++extern int grsec_symlinkown_gid; ++extern int grsec_enable_tpe; ++extern int grsec_tpe_gid; ++extern int grsec_enable_tpe_all; ++extern int grsec_enable_tpe_invert; ++extern int grsec_enable_socket_all; ++extern int grsec_socket_all_gid; ++extern int grsec_enable_socket_client; ++extern int grsec_socket_client_gid; ++extern int grsec_enable_socket_server; ++extern int grsec_socket_server_gid; ++extern int grsec_audit_gid; ++extern int grsec_enable_group; ++extern int grsec_enable_audit_textrel; ++extern int grsec_enable_log_rwxmaps; ++extern int grsec_enable_mount; ++extern int grsec_enable_chdir; ++extern int grsec_resource_logging; ++extern int grsec_enable_blackhole; ++extern int grsec_lastack_retries; ++extern int grsec_enable_brute; ++extern int grsec_lock; ++ ++extern spinlock_t grsec_alert_lock; ++extern unsigned long grsec_alert_wtime; ++extern unsigned long grsec_alert_fyet; ++ ++extern spinlock_t grsec_audit_lock; ++ ++extern rwlock_t grsec_exec_file_lock; ++ ++#define gr_task_fullpath(tsk) ((tsk)->exec_file ? \ ++ gr_to_filename2((tsk)->exec_file->f_path.dentry, \ ++ (tsk)->exec_file->f_vfsmnt) : "/") ++ ++#define gr_parent_task_fullpath(tsk) ((tsk)->real_parent->exec_file ? \ ++ gr_to_filename3((tsk)->real_parent->exec_file->f_path.dentry, \ ++ (tsk)->real_parent->exec_file->f_vfsmnt) : "/") ++ ++#define gr_task_fullpath0(tsk) ((tsk)->exec_file ? \ ++ gr_to_filename((tsk)->exec_file->f_path.dentry, \ ++ (tsk)->exec_file->f_vfsmnt) : "/") ++ ++#define gr_parent_task_fullpath0(tsk) ((tsk)->real_parent->exec_file ? \ ++ gr_to_filename1((tsk)->real_parent->exec_file->f_path.dentry, \ ++ (tsk)->real_parent->exec_file->f_vfsmnt) : "/") ++ ++#define proc_is_chrooted(tsk_a) ((tsk_a)->gr_is_chrooted) ++ ++#define have_same_root(tsk_a,tsk_b) ((tsk_a)->gr_chroot_dentry == (tsk_b)->gr_chroot_dentry) ++ ++#define DEFAULTSECARGS(task, cred, pcred) gr_task_fullpath(task), (task)->comm, \ ++ (task)->pid, (cred)->uid, \ ++ (cred)->euid, (cred)->gid, (cred)->egid, \ ++ gr_parent_task_fullpath(task), \ ++ (task)->real_parent->comm, (task)->real_parent->pid, \ ++ (pcred)->uid, (pcred)->euid, \ ++ (pcred)->gid, (pcred)->egid ++ ++#define GR_CHROOT_CAPS {{ \ ++ CAP_TO_MASK(CAP_LINUX_IMMUTABLE) | CAP_TO_MASK(CAP_NET_ADMIN) | \ ++ CAP_TO_MASK(CAP_SYS_MODULE) | CAP_TO_MASK(CAP_SYS_RAWIO) | \ ++ CAP_TO_MASK(CAP_SYS_PACCT) | CAP_TO_MASK(CAP_SYS_ADMIN) | \ ++ CAP_TO_MASK(CAP_SYS_BOOT) | CAP_TO_MASK(CAP_SYS_TIME) | \ ++ CAP_TO_MASK(CAP_NET_RAW) | CAP_TO_MASK(CAP_SYS_TTY_CONFIG) | \ ++ CAP_TO_MASK(CAP_IPC_OWNER) | CAP_TO_MASK(CAP_SETFCAP), \ ++ CAP_TO_MASK(CAP_SYSLOG) | CAP_TO_MASK(CAP_MAC_ADMIN) }} ++ ++#define security_learn(normal_msg,args...) \ ++({ \ ++ read_lock(&grsec_exec_file_lock); \ ++ gr_add_learn_entry(normal_msg "\n", ## args); \ ++ read_unlock(&grsec_exec_file_lock); \ ++}) ++ ++enum { ++ GR_DO_AUDIT, ++ GR_DONT_AUDIT, ++ /* used for non-audit messages that we shouldn't kill the task on */ ++ GR_DONT_AUDIT_GOOD ++}; ++ ++enum { ++ GR_TTYSNIFF, ++ GR_RBAC, ++ GR_RBAC_STR, ++ GR_STR_RBAC, ++ GR_RBAC_MODE2, ++ GR_RBAC_MODE3, ++ GR_FILENAME, ++ GR_SYSCTL_HIDDEN, ++ GR_NOARGS, ++ GR_ONE_INT, ++ GR_ONE_INT_TWO_STR, ++ GR_ONE_STR, ++ GR_STR_INT, ++ GR_TWO_STR_INT, ++ GR_TWO_INT, ++ GR_TWO_U64, ++ GR_THREE_INT, ++ GR_FIVE_INT_TWO_STR, ++ GR_TWO_STR, ++ GR_THREE_STR, ++ GR_FOUR_STR, ++ GR_STR_FILENAME, ++ GR_FILENAME_STR, ++ GR_FILENAME_TWO_INT, ++ GR_FILENAME_TWO_INT_STR, ++ GR_TEXTREL, ++ GR_PTRACE, ++ GR_RESOURCE, ++ GR_CAP, ++ GR_SIG, ++ GR_SIG2, ++ GR_CRASH1, ++ GR_CRASH2, ++ GR_PSACCT, ++ GR_RWXMAP ++}; ++ ++#define gr_log_hidden_sysctl(audit, msg, str) gr_log_varargs(audit, msg, GR_SYSCTL_HIDDEN, str) ++#define gr_log_ttysniff(audit, msg, task) gr_log_varargs(audit, msg, GR_TTYSNIFF, task) ++#define gr_log_fs_rbac_generic(audit, msg, dentry, mnt) gr_log_varargs(audit, msg, GR_RBAC, dentry, mnt) ++#define gr_log_fs_rbac_str(audit, msg, dentry, mnt, str) gr_log_varargs(audit, msg, GR_RBAC_STR, dentry, mnt, str) ++#define gr_log_fs_str_rbac(audit, msg, str, dentry, mnt) gr_log_varargs(audit, msg, GR_STR_RBAC, str, dentry, mnt) ++#define gr_log_fs_rbac_mode2(audit, msg, dentry, mnt, str1, str2) gr_log_varargs(audit, msg, GR_RBAC_MODE2, dentry, mnt, str1, str2) ++#define gr_log_fs_rbac_mode3(audit, msg, dentry, mnt, str1, str2, str3) gr_log_varargs(audit, msg, GR_RBAC_MODE3, dentry, mnt, str1, str2, str3) ++#define gr_log_fs_generic(audit, msg, dentry, mnt) gr_log_varargs(audit, msg, GR_FILENAME, dentry, mnt) ++#define gr_log_noargs(audit, msg) gr_log_varargs(audit, msg, GR_NOARGS) ++#define gr_log_int(audit, msg, num) gr_log_varargs(audit, msg, GR_ONE_INT, num) ++#define gr_log_int_str2(audit, msg, num, str1, str2) gr_log_varargs(audit, msg, GR_ONE_INT_TWO_STR, num, str1, str2) ++#define gr_log_str(audit, msg, str) gr_log_varargs(audit, msg, GR_ONE_STR, str) ++#define gr_log_str_int(audit, msg, str, num) gr_log_varargs(audit, msg, GR_STR_INT, str, num) ++#define gr_log_int_int(audit, msg, num1, num2) gr_log_varargs(audit, msg, GR_TWO_INT, num1, num2) ++#define gr_log_two_u64(audit, msg, num1, num2) gr_log_varargs(audit, msg, GR_TWO_U64, num1, num2) ++#define gr_log_int3(audit, msg, num1, num2, num3) gr_log_varargs(audit, msg, GR_THREE_INT, num1, num2, num3) ++#define gr_log_int5_str2(audit, msg, num1, num2, str1, str2) gr_log_varargs(audit, msg, GR_FIVE_INT_TWO_STR, num1, num2, str1, str2) ++#define gr_log_str_str(audit, msg, str1, str2) gr_log_varargs(audit, msg, GR_TWO_STR, str1, str2) ++#define gr_log_str2_int(audit, msg, str1, str2, num) gr_log_varargs(audit, msg, GR_TWO_STR_INT, str1, str2, num) ++#define gr_log_str3(audit, msg, str1, str2, str3) gr_log_varargs(audit, msg, GR_THREE_STR, str1, str2, str3) ++#define gr_log_str4(audit, msg, str1, str2, str3, str4) gr_log_varargs(audit, msg, GR_FOUR_STR, str1, str2, str3, str4) ++#define gr_log_str_fs(audit, msg, str, dentry, mnt) gr_log_varargs(audit, msg, GR_STR_FILENAME, str, dentry, mnt) ++#define gr_log_fs_str(audit, msg, dentry, mnt, str) gr_log_varargs(audit, msg, GR_FILENAME_STR, dentry, mnt, str) ++#define gr_log_fs_int2(audit, msg, dentry, mnt, num1, num2) gr_log_varargs(audit, msg, GR_FILENAME_TWO_INT, dentry, mnt, num1, num2) ++#define gr_log_fs_int2_str(audit, msg, dentry, mnt, num1, num2, str) gr_log_varargs(audit, msg, GR_FILENAME_TWO_INT_STR, dentry, mnt, num1, num2, str) ++#define gr_log_textrel_ulong_ulong(audit, msg, file, ulong1, ulong2) gr_log_varargs(audit, msg, GR_TEXTREL, file, ulong1, ulong2) ++#define gr_log_ptrace(audit, msg, task) gr_log_varargs(audit, msg, GR_PTRACE, task) ++#define gr_log_res_ulong2_str(audit, msg, task, ulong1, str, ulong2) gr_log_varargs(audit, msg, GR_RESOURCE, task, ulong1, str, ulong2) ++#define gr_log_cap(audit, msg, task, str) gr_log_varargs(audit, msg, GR_CAP, task, str) ++#define gr_log_sig_addr(audit, msg, str, addr) gr_log_varargs(audit, msg, GR_SIG, str, addr) ++#define gr_log_sig_task(audit, msg, task, num) gr_log_varargs(audit, msg, GR_SIG2, task, num) ++#define gr_log_crash1(audit, msg, task, ulong) gr_log_varargs(audit, msg, GR_CRASH1, task, ulong) ++#define gr_log_crash2(audit, msg, task, ulong1) gr_log_varargs(audit, msg, GR_CRASH2, task, ulong1) ++#define gr_log_procacct(audit, msg, task, num1, num2, num3, num4, num5, num6, num7, num8, num9) gr_log_varargs(audit, msg, GR_PSACCT, task, num1, num2, num3, num4, num5, num6, num7, num8, num9) ++#define gr_log_rwxmap(audit, msg, str) gr_log_varargs(audit, msg, GR_RWXMAP, str) ++ ++void gr_log_varargs(int audit, const char *msg, int argtypes, ...); ++ ++#endif ++ ++#endif +diff --git a/include/linux/grmsg.h b/include/linux/grmsg.h +new file mode 100644 +index 0000000..54f4e85 +--- /dev/null ++++ b/include/linux/grmsg.h +@@ -0,0 +1,110 @@ ++#define DEFAULTSECMSG "%.256s[%.16s:%d] uid/euid:%u/%u gid/egid:%u/%u, parent %.256s[%.16s:%d] uid/euid:%u/%u gid/egid:%u/%u" ++#define GR_ACL_PROCACCT_MSG "%.256s[%.16s:%d] IP:%pI4 TTY:%.64s uid/euid:%u/%u gid/egid:%u/%u run time:[%ud %uh %um %us] cpu time:[%ud %uh %um %us] %s with exit code %ld, parent %.256s[%.16s:%d] IP:%pI4 TTY:%.64s uid/euid:%u/%u gid/egid:%u/%u" ++#define GR_PTRACE_ACL_MSG "denied ptrace of %.950s(%.16s:%d) by " ++#define GR_STOPMOD_MSG "denied modification of module state by " ++#define GR_ROFS_BLOCKWRITE_MSG "denied write to block device %.950s by " ++#define GR_ROFS_MOUNT_MSG "denied writable mount of %.950s by " ++#define GR_IOPERM_MSG "denied use of ioperm() by " ++#define GR_IOPL_MSG "denied use of iopl() by " ++#define GR_SHMAT_ACL_MSG "denied attach of shared memory of UID %u, PID %d, ID %u by " ++#define GR_UNIX_CHROOT_MSG "denied connect() to abstract AF_UNIX socket outside of chroot by " ++#define GR_SHMAT_CHROOT_MSG "denied attach of shared memory outside of chroot by " ++#define GR_MEM_READWRITE_MSG "denied access of range %Lx -> %Lx in /dev/mem by " ++#define GR_SYMLINK_MSG "not following symlink %.950s owned by %d.%d by " ++#define GR_LEARN_AUDIT_MSG "%s\t%u\t%u\t%u\t%.4095s\t%.4095s\t%lu\t%lu\t%.4095s\t%lu\t%pI4" ++#define GR_ID_LEARN_MSG "%s\t%u\t%u\t%u\t%.4095s\t%.4095s\t%c\t%d\t%d\t%d\t%pI4" ++#define GR_HIDDEN_ACL_MSG "%s access to hidden file %.950s by " ++#define GR_OPEN_ACL_MSG "%s open of %.950s for%s%s by " ++#define GR_CREATE_ACL_MSG "%s create of %.950s for%s%s by " ++#define GR_FIFO_MSG "denied writing FIFO %.950s of %d.%d by " ++#define GR_MKNOD_CHROOT_MSG "denied mknod of %.950s from chroot by " ++#define GR_MKNOD_ACL_MSG "%s mknod of %.950s by " ++#define GR_UNIXCONNECT_ACL_MSG "%s connect() to the unix domain socket %.950s by " ++#define GR_TTYSNIFF_ACL_MSG "terminal being sniffed by IP:%pI4 %.480s[%.16s:%d], parent %.480s[%.16s:%d] against " ++#define GR_MKDIR_ACL_MSG "%s mkdir of %.950s by " ++#define GR_RMDIR_ACL_MSG "%s rmdir of %.950s by " ++#define GR_UNLINK_ACL_MSG "%s unlink of %.950s by " ++#define GR_SYMLINK_ACL_MSG "%s symlink from %.480s to %.480s by " ++#define GR_HARDLINK_MSG "denied hardlink of %.930s (owned by %d.%d) to %.30s for " ++#define GR_LINK_ACL_MSG "%s link of %.480s to %.480s by " ++#define GR_INHERIT_ACL_MSG "successful inherit of %.480s's ACL for %.480s by " ++#define GR_RENAME_ACL_MSG "%s rename of %.480s to %.480s by " ++#define GR_UNSAFESHARE_EXEC_ACL_MSG "denied exec with cloned fs of %.950s by " ++#define GR_PTRACE_EXEC_ACL_MSG "denied ptrace of %.950s by " ++#define GR_EXEC_ACL_MSG "%s execution of %.950s by " ++#define GR_EXEC_TPE_MSG "denied untrusted exec (due to %.70s) of %.950s by " ++#define GR_SEGVSTART_ACL_MSG "possible exploit bruteforcing on " DEFAULTSECMSG " banning uid %u from login for %lu seconds" ++#define GR_SEGVNOSUID_ACL_MSG "possible exploit bruteforcing on " DEFAULTSECMSG " banning execution for %lu seconds" ++#define GR_MOUNT_CHROOT_MSG "denied mount of %.256s as %.930s from chroot by " ++#define GR_PIVOT_CHROOT_MSG "denied pivot_root from chroot by " ++#define GR_TRUNCATE_ACL_MSG "%s truncate of %.950s by " ++#define GR_ATIME_ACL_MSG "%s access time change of %.950s by " ++#define GR_ACCESS_ACL_MSG "%s access of %.950s for%s%s%s by " ++#define GR_CHROOT_CHROOT_MSG "denied double chroot to %.950s by " ++#define GR_CHMOD_CHROOT_MSG "denied chmod +s of %.950s by " ++#define GR_CHMOD_ACL_MSG "%s chmod of %.950s by " ++#define GR_CHROOT_FCHDIR_MSG "denied fchdir outside of chroot to %.950s by " ++#define GR_CHOWN_ACL_MSG "%s chown of %.950s by " ++#define GR_SETXATTR_ACL_MSG "%s setting extended attributes of %.950s by " ++#define GR_WRITLIB_ACL_MSG "denied load of writable library %.950s by " ++#define GR_INITF_ACL_MSG "init_variables() failed %s by " ++#define GR_DISABLED_ACL_MSG "Error loading %s, trying to run kernel with acls disabled. To disable acls at startup use <kernel image name> gracl=off from your boot loader" ++#define GR_DEV_ACL_MSG "/dev/grsec: %d bytes sent %d required, being fed garbage by " ++#define GR_SHUTS_ACL_MSG "shutdown auth success for " ++#define GR_SHUTF_ACL_MSG "shutdown auth failure for " ++#define GR_SHUTI_ACL_MSG "ignoring shutdown for disabled RBAC system for " ++#define GR_SEGVMODS_ACL_MSG "segvmod auth success for " ++#define GR_SEGVMODF_ACL_MSG "segvmod auth failure for " ++#define GR_SEGVMODI_ACL_MSG "ignoring segvmod for disabled RBAC system for " ++#define GR_ENABLE_ACL_MSG "%s RBAC system loaded by " ++#define GR_ENABLEF_ACL_MSG "unable to load %s for " ++#define GR_RELOADI_ACL_MSG "ignoring reload request for disabled RBAC system" ++#define GR_RELOAD_ACL_MSG "%s RBAC system reloaded by " ++#define GR_RELOADF_ACL_MSG "failed reload of %s for " ++#define GR_SPROLEI_ACL_MSG "ignoring change to special role for disabled RBAC system for " ++#define GR_SPROLES_ACL_MSG "successful change to special role %s (id %d) by " ++#define GR_SPROLEL_ACL_MSG "special role %s (id %d) exited by " ++#define GR_SPROLEF_ACL_MSG "special role %s failure for " ++#define GR_UNSPROLEI_ACL_MSG "ignoring unauth of special role for disabled RBAC system for " ++#define GR_UNSPROLES_ACL_MSG "successful unauth of special role %s (id %d) by " ++#define GR_INVMODE_ACL_MSG "invalid mode %d by " ++#define GR_PRIORITY_CHROOT_MSG "denied priority change of process (%.16s:%d) by " ++#define GR_FAILFORK_MSG "failed fork with errno %s by " ++#define GR_NICE_CHROOT_MSG "denied priority change by " ++#define GR_UNISIGLOG_MSG "%.32s occurred at %p in " ++#define GR_DUALSIGLOG_MSG "signal %d sent to " DEFAULTSECMSG " by " ++#define GR_SIG_ACL_MSG "denied send of signal %d to protected task " DEFAULTSECMSG " by " ++#define GR_SYSCTL_MSG "denied modification of grsecurity sysctl value : %.32s by " ++#define GR_SYSCTL_ACL_MSG "%s sysctl of %.950s for%s%s by " ++#define GR_TIME_MSG "time set by " ++#define GR_DEFACL_MSG "fatal: unable to find subject for (%.16s:%d), loaded by " ++#define GR_MMAP_ACL_MSG "%s executable mmap of %.950s by " ++#define GR_MPROTECT_ACL_MSG "%s executable mprotect of %.950s by " ++#define GR_SOCK_MSG "denied socket(%.16s,%.16s,%.16s) by " ++#define GR_SOCK_NOINET_MSG "denied socket(%.16s,%.16s,%d) by " ++#define GR_BIND_MSG "denied bind() by " ++#define GR_CONNECT_MSG "denied connect() by " ++#define GR_BIND_ACL_MSG "denied bind() to %pI4 port %u sock type %.16s protocol %.16s by " ++#define GR_CONNECT_ACL_MSG "denied connect() to %pI4 port %u sock type %.16s protocol %.16s by " ++#define GR_IP_LEARN_MSG "%s\t%u\t%u\t%u\t%.4095s\t%.4095s\t%pI4\t%u\t%u\t%u\t%u\t%pI4" ++#define GR_EXEC_CHROOT_MSG "exec of %.980s within chroot by process " ++#define GR_CAP_ACL_MSG "use of %s denied for " ++#define GR_CAP_CHROOT_MSG "use of %s in chroot denied for " ++#define GR_CAP_ACL_MSG2 "use of %s permitted for " ++#define GR_USRCHANGE_ACL_MSG "change to uid %u denied for " ++#define GR_GRPCHANGE_ACL_MSG "change to gid %u denied for " ++#define GR_REMOUNT_AUDIT_MSG "remount of %.256s by " ++#define GR_UNMOUNT_AUDIT_MSG "unmount of %.256s by " ++#define GR_MOUNT_AUDIT_MSG "mount of %.256s to %.256s by " ++#define GR_CHDIR_AUDIT_MSG "chdir to %.980s by " ++#define GR_EXEC_AUDIT_MSG "exec of %.930s (%.128s) by " ++#define GR_RESOURCE_MSG "denied resource overstep by requesting %lu for %.16s against limit %lu for " ++#define GR_RWXMMAP_MSG "denied RWX mmap of %.950s by " ++#define GR_RWXMPROTECT_MSG "denied RWX mprotect of %.950s by " ++#define GR_TEXTREL_AUDIT_MSG "text relocation in %s, VMA:0x%08lx 0x%08lx by " ++#define GR_VM86_MSG "denied use of vm86 by " ++#define GR_PTRACE_AUDIT_MSG "process %.950s(%.16s:%d) attached to via ptrace by " ++#define GR_PTRACE_READEXEC_MSG "denied ptrace of unreadable binary %.950s by " ++#define GR_INIT_TRANSFER_MSG "persistent special role transferred privilege to init by " ++#define GR_BADPROCPID_MSG "denied read of sensitive /proc/pid/%s entry via fd passed across exec by " ++#define GR_SYMLINKOWNER_MSG "denied following symlink %.950s since symlink owner %u does not match target owner %u, by " +diff --git a/include/linux/grsecurity.h b/include/linux/grsecurity.h +new file mode 100644 +index 0000000..38bfb04 +--- /dev/null ++++ b/include/linux/grsecurity.h +@@ -0,0 +1,233 @@ ++#ifndef GR_SECURITY_H ++#define GR_SECURITY_H ++#include <linux/fs.h> ++#include <linux/fs_struct.h> ++#include <linux/binfmts.h> ++#include <linux/gracl.h> ++ ++/* notify of brain-dead configs */ ++#if defined(CONFIG_GRKERNSEC_PROC_USER) && defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++#error "CONFIG_GRKERNSEC_PROC_USER and CONFIG_GRKERNSEC_PROC_USERGROUP cannot both be enabled." ++#endif ++#if defined(CONFIG_PAX_NOEXEC) && !defined(CONFIG_PAX_PAGEEXEC) && !defined(CONFIG_PAX_SEGMEXEC) && !defined(CONFIG_PAX_KERNEXEC) ++#error "CONFIG_PAX_NOEXEC enabled, but PAGEEXEC, SEGMEXEC, and KERNEXEC are disabled." ++#endif ++#if defined(CONFIG_PAX_ASLR) && !defined(CONFIG_PAX_RANDKSTACK) && !defined(CONFIG_PAX_RANDUSTACK) && !defined(CONFIG_PAX_RANDMMAP) ++#error "CONFIG_PAX_ASLR enabled, but RANDKSTACK, RANDUSTACK, and RANDMMAP are disabled." ++#endif ++#if defined(CONFIG_PAX) && !defined(CONFIG_PAX_NOEXEC) && !defined(CONFIG_PAX_ASLR) ++#error "CONFIG_PAX enabled, but no PaX options are enabled." ++#endif ++ ++#include <linux/compat.h> ++ ++struct user_arg_ptr { ++#ifdef CONFIG_COMPAT ++ bool is_compat; ++#endif ++ union { ++ const char __user *const __user *native; ++#ifdef CONFIG_COMPAT ++ compat_uptr_t __user *compat; ++#endif ++ } ptr; ++}; ++ ++void gr_handle_brute_attach(struct task_struct *p, unsigned long mm_flags); ++void gr_handle_brute_check(void); ++void gr_handle_kernel_exploit(void); ++int gr_process_user_ban(void); ++ ++char gr_roletype_to_char(void); ++ ++int gr_acl_enable_at_secure(void); ++ ++int gr_check_user_change(int real, int effective, int fs); ++int gr_check_group_change(int real, int effective, int fs); ++ ++void gr_del_task_from_ip_table(struct task_struct *p); ++ ++int gr_pid_is_chrooted(struct task_struct *p); ++int gr_handle_chroot_fowner(struct pid *pid, enum pid_type type); ++int gr_handle_chroot_nice(void); ++int gr_handle_chroot_sysctl(const int op); ++int gr_handle_chroot_setpriority(struct task_struct *p, ++ const int niceval); ++int gr_chroot_fchdir(struct dentry *u_dentry, struct vfsmount *u_mnt); ++int gr_handle_chroot_chroot(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++void gr_handle_chroot_chdir(struct path *path); ++int gr_handle_chroot_chmod(const struct dentry *dentry, ++ const struct vfsmount *mnt, const int mode); ++int gr_handle_chroot_mknod(const struct dentry *dentry, ++ const struct vfsmount *mnt, const int mode); ++int gr_handle_chroot_mount(const struct dentry *dentry, ++ const struct vfsmount *mnt, ++ const char *dev_name); ++int gr_handle_chroot_pivot(void); ++int gr_handle_chroot_unix(const pid_t pid); ++ ++int gr_handle_rawio(const struct inode *inode); ++ ++void gr_handle_ioperm(void); ++void gr_handle_iopl(void); ++ ++umode_t gr_acl_umask(void); ++ ++int gr_tpe_allow(const struct file *file); ++ ++void gr_set_chroot_entries(struct task_struct *task, struct path *path); ++void gr_clear_chroot_entries(struct task_struct *task); ++ ++void gr_log_forkfail(const int retval); ++void gr_log_timechange(void); ++void gr_log_signal(const int sig, const void *addr, const struct task_struct *t); ++void gr_log_chdir(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++void gr_log_chroot_exec(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++void gr_handle_exec_args(struct linux_binprm *bprm, struct user_arg_ptr argv); ++void gr_log_remount(const char *devname, const int retval); ++void gr_log_unmount(const char *devname, const int retval); ++void gr_log_mount(const char *from, const char *to, const int retval); ++void gr_log_textrel(struct vm_area_struct *vma); ++void gr_log_rwxmmap(struct file *file); ++void gr_log_rwxmprotect(struct file *file); ++ ++int gr_handle_follow_link(const struct inode *parent, ++ const struct inode *inode, ++ const struct dentry *dentry, ++ const struct vfsmount *mnt); ++int gr_handle_fifo(const struct dentry *dentry, ++ const struct vfsmount *mnt, ++ const struct dentry *dir, const int flag, ++ const int acc_mode); ++int gr_handle_hardlink(const struct dentry *dentry, ++ const struct vfsmount *mnt, ++ struct inode *inode, ++ const int mode, const char *to); ++ ++int gr_is_capable(const int cap); ++int gr_is_capable_nolog(const int cap); ++int gr_task_is_capable(const struct task_struct *task, const struct cred *cred, const int cap); ++int gr_task_is_capable_nolog(const struct task_struct *task, const int cap); ++ ++void gr_learn_resource(const struct task_struct *task, const int limit, ++ const unsigned long wanted, const int gt); ++void gr_copy_label(struct task_struct *tsk); ++void gr_handle_crash(struct task_struct *task, const int sig); ++int gr_handle_signal(const struct task_struct *p, const int sig); ++int gr_check_crash_uid(const uid_t uid); ++int gr_check_protected_task(const struct task_struct *task); ++int gr_check_protected_task_fowner(struct pid *pid, enum pid_type type); ++int gr_acl_handle_mmap(const struct file *file, ++ const unsigned long prot); ++int gr_acl_handle_mprotect(const struct file *file, ++ const unsigned long prot); ++int gr_check_hidden_task(const struct task_struct *tsk); ++__u32 gr_acl_handle_truncate(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++__u32 gr_acl_handle_utime(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++__u32 gr_acl_handle_access(const struct dentry *dentry, ++ const struct vfsmount *mnt, const int fmode); ++__u32 gr_acl_handle_chmod(const struct dentry *dentry, ++ const struct vfsmount *mnt, umode_t *mode); ++__u32 gr_acl_handle_chown(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++__u32 gr_acl_handle_setxattr(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++int gr_handle_ptrace(struct task_struct *task, const long request); ++int gr_handle_proc_ptrace(struct task_struct *task); ++__u32 gr_acl_handle_execve(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++int gr_check_crash_exec(const struct file *filp); ++int gr_acl_is_enabled(void); ++void gr_set_kernel_label(struct task_struct *task); ++void gr_set_role_label(struct task_struct *task, const uid_t uid, ++ const gid_t gid); ++int gr_set_proc_label(const struct dentry *dentry, ++ const struct vfsmount *mnt, ++ const int unsafe_flags); ++__u32 gr_acl_handle_hidden_file(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++__u32 gr_acl_handle_open(const struct dentry *dentry, ++ const struct vfsmount *mnt, int acc_mode); ++__u32 gr_acl_handle_creat(const struct dentry *dentry, ++ const struct dentry *p_dentry, ++ const struct vfsmount *p_mnt, ++ int open_flags, int acc_mode, const int imode); ++void gr_handle_create(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++void gr_handle_proc_create(const struct dentry *dentry, ++ const struct inode *inode); ++__u32 gr_acl_handle_mknod(const struct dentry *new_dentry, ++ const struct dentry *parent_dentry, ++ const struct vfsmount *parent_mnt, ++ const int mode); ++__u32 gr_acl_handle_mkdir(const struct dentry *new_dentry, ++ const struct dentry *parent_dentry, ++ const struct vfsmount *parent_mnt); ++__u32 gr_acl_handle_rmdir(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++void gr_handle_delete(const ino_t ino, const dev_t dev); ++__u32 gr_acl_handle_unlink(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++__u32 gr_acl_handle_symlink(const struct dentry *new_dentry, ++ const struct dentry *parent_dentry, ++ const struct vfsmount *parent_mnt, ++ const char *from); ++__u32 gr_acl_handle_link(const struct dentry *new_dentry, ++ const struct dentry *parent_dentry, ++ const struct vfsmount *parent_mnt, ++ const struct dentry *old_dentry, ++ const struct vfsmount *old_mnt, const char *to); ++int gr_handle_symlink_owner(const struct path *link, const struct inode *target); ++int gr_acl_handle_rename(struct dentry *new_dentry, ++ struct dentry *parent_dentry, ++ const struct vfsmount *parent_mnt, ++ struct dentry *old_dentry, ++ struct inode *old_parent_inode, ++ struct vfsmount *old_mnt, const char *newname); ++void gr_handle_rename(struct inode *old_dir, struct inode *new_dir, ++ struct dentry *old_dentry, ++ struct dentry *new_dentry, ++ struct vfsmount *mnt, const __u8 replace); ++__u32 gr_check_link(const struct dentry *new_dentry, ++ const struct dentry *parent_dentry, ++ const struct vfsmount *parent_mnt, ++ const struct dentry *old_dentry, ++ const struct vfsmount *old_mnt); ++int gr_acl_handle_filldir(const struct file *file, const char *name, ++ const unsigned int namelen, const ino_t ino); ++ ++__u32 gr_acl_handle_unix(const struct dentry *dentry, ++ const struct vfsmount *mnt); ++void gr_acl_handle_exit(void); ++void gr_acl_handle_psacct(struct task_struct *task, const long code); ++int gr_acl_handle_procpidmem(const struct task_struct *task); ++int gr_handle_rofs_mount(struct dentry *dentry, struct vfsmount *mnt, int mnt_flags); ++int gr_handle_rofs_blockwrite(struct dentry *dentry, struct vfsmount *mnt, int acc_mode); ++void gr_audit_ptrace(struct task_struct *task); ++dev_t gr_get_dev_from_dentry(struct dentry *dentry); ++ ++int gr_ptrace_readexec(struct file *file, int unsafe_flags); ++ ++#ifdef CONFIG_GRKERNSEC ++void task_grsec_rbac(struct seq_file *m, struct task_struct *p); ++void gr_handle_vm86(void); ++void gr_handle_mem_readwrite(u64 from, u64 to); ++ ++void gr_log_badprocpid(const char *entry); ++ ++extern int grsec_enable_dmesg; ++extern int grsec_disable_privio; ++#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK ++extern int grsec_enable_chroot_findtask; ++#endif ++#ifdef CONFIG_GRKERNSEC_SETXID ++extern int grsec_enable_setxid; ++#endif ++#endif ++ ++#endif +diff --git a/include/linux/grsock.h b/include/linux/grsock.h +new file mode 100644 +index 0000000..e7ffaaf +--- /dev/null ++++ b/include/linux/grsock.h +@@ -0,0 +1,19 @@ ++#ifndef __GRSOCK_H ++#define __GRSOCK_H ++ ++extern void gr_attach_curr_ip(const struct sock *sk); ++extern int gr_handle_sock_all(const int family, const int type, ++ const int protocol); ++extern int gr_handle_sock_server(const struct sockaddr *sck); ++extern int gr_handle_sock_server_other(const struct sock *sck); ++extern int gr_handle_sock_client(const struct sockaddr *sck); ++extern int gr_search_connect(struct socket * sock, ++ struct sockaddr_in * addr); ++extern int gr_search_bind(struct socket * sock, ++ struct sockaddr_in * addr); ++extern int gr_search_listen(struct socket * sock); ++extern int gr_search_accept(struct socket * sock); ++extern int gr_search_socket(const int domain, const int type, ++ const int protocol); ++ ++#endif +diff --git a/include/linux/hid.h b/include/linux/hid.h +index 3a95da6..51986f1 100644 +--- a/include/linux/hid.h ++++ b/include/linux/hid.h +@@ -696,7 +696,7 @@ struct hid_ll_driver { + unsigned int code, int value); + + int (*parse)(struct hid_device *hdev); +-}; ++} __no_const; + + #define PM_HINT_FULLON 1<<5 + #define PM_HINT_NORMAL 1<<1 +diff --git a/include/linux/highmem.h b/include/linux/highmem.h +index d3999b4..1304cb4 100644 +--- a/include/linux/highmem.h ++++ b/include/linux/highmem.h +@@ -221,6 +221,18 @@ static inline void clear_highpage(struct page *page) + kunmap_atomic(kaddr); + } + ++static inline void sanitize_highpage(struct page *page) ++{ ++ void *kaddr; ++ unsigned long flags; ++ ++ local_irq_save(flags); ++ kaddr = kmap_atomic(page); ++ clear_page(kaddr); ++ kunmap_atomic(kaddr); ++ local_irq_restore(flags); ++} ++ + static inline void zero_user_segments(struct page *page, + unsigned start1, unsigned end1, + unsigned start2, unsigned end2) +diff --git a/include/linux/i2c.h b/include/linux/i2c.h +index 195d8b3..e20cfab 100644 +--- a/include/linux/i2c.h ++++ b/include/linux/i2c.h +@@ -365,6 +365,7 @@ struct i2c_algorithm { + /* To determine what the adapter supports */ + u32 (*functionality) (struct i2c_adapter *); + }; ++typedef struct i2c_algorithm __no_const i2c_algorithm_no_const; + + /* + * i2c_adapter is the structure used to identify a physical i2c bus along +diff --git a/include/linux/i2o.h b/include/linux/i2o.h +index d23c3c2..eb63c81 100644 +--- a/include/linux/i2o.h ++++ b/include/linux/i2o.h +@@ -565,7 +565,7 @@ struct i2o_controller { + struct i2o_device *exec; /* Executive */ + #if BITS_PER_LONG == 64 + spinlock_t context_list_lock; /* lock for context_list */ +- atomic_t context_list_counter; /* needed for unique contexts */ ++ atomic_unchecked_t context_list_counter; /* needed for unique contexts */ + struct list_head context_list; /* list of context id's + and pointers */ + #endif +diff --git a/include/linux/if_team.h b/include/linux/if_team.h +index 58404b0..439ed95 100644 +--- a/include/linux/if_team.h ++++ b/include/linux/if_team.h +@@ -64,6 +64,7 @@ struct team_mode_ops { + void (*port_leave)(struct team *team, struct team_port *port); + void (*port_change_mac)(struct team *team, struct team_port *port); + }; ++typedef struct team_mode_ops __no_const team_mode_ops_no_const; + + enum team_option_type { + TEAM_OPTION_TYPE_U32, +@@ -112,7 +113,7 @@ struct team { + struct list_head option_list; + + const struct team_mode *mode; +- struct team_mode_ops ops; ++ team_mode_ops_no_const ops; + long mode_priv[TEAM_MODE_PRIV_LONGS]; + }; + +diff --git a/include/linux/init.h b/include/linux/init.h +index 6b95109..4aca62c 100644 +--- a/include/linux/init.h ++++ b/include/linux/init.h +@@ -294,13 +294,13 @@ void __init parse_early_options(char *cmdline); + + /* Each module must use one module_init(). */ + #define module_init(initfn) \ +- static inline initcall_t __inittest(void) \ ++ static inline __used initcall_t __inittest(void) \ + { return initfn; } \ + int init_module(void) __attribute__((alias(#initfn))); + + /* This is only required if you want to be unloadable. */ + #define module_exit(exitfn) \ +- static inline exitcall_t __exittest(void) \ ++ static inline __used exitcall_t __exittest(void) \ + { return exitfn; } \ + void cleanup_module(void) __attribute__((alias(#exitfn))); + +diff --git a/include/linux/init_task.h b/include/linux/init_task.h +index e4baff5..83bb175 100644 +--- a/include/linux/init_task.h ++++ b/include/linux/init_task.h +@@ -134,6 +134,12 @@ extern struct cred init_cred; + + #define INIT_TASK_COMM "swapper" + ++#ifdef CONFIG_X86 ++#define INIT_TASK_THREAD_INFO .tinfo = INIT_THREAD_INFO, ++#else ++#define INIT_TASK_THREAD_INFO ++#endif ++ + /* + * INIT_TASK is used to set up the first task table, touch at + * your own risk!. Base=0, limit=0x1fffff (=2MB) +@@ -172,6 +178,7 @@ extern struct cred init_cred; + RCU_INIT_POINTER(.cred, &init_cred), \ + .comm = INIT_TASK_COMM, \ + .thread = INIT_THREAD, \ ++ INIT_TASK_THREAD_INFO \ + .fs = &init_fs, \ + .files = &init_files, \ + .signal = &init_signals, \ +diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h +index e6ca56d..8583707 100644 +--- a/include/linux/intel-iommu.h ++++ b/include/linux/intel-iommu.h +@@ -296,7 +296,7 @@ struct iommu_flush { + u8 fm, u64 type); + void (*flush_iotlb)(struct intel_iommu *iommu, u16 did, u64 addr, + unsigned int size_order, u64 type); +-}; ++} __no_const; + + enum { + SR_DMAR_FECTL_REG, +diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h +index 2aea5d2..0b82f0c 100644 +--- a/include/linux/interrupt.h ++++ b/include/linux/interrupt.h +@@ -439,7 +439,7 @@ enum + /* map softirq index to softirq name. update 'softirq_to_name' in + * kernel/softirq.c when adding a new softirq. + */ +-extern char *softirq_to_name[NR_SOFTIRQS]; ++extern const char * const softirq_to_name[NR_SOFTIRQS]; + + /* softirq mask and active fields moved to irq_cpustat_t in + * asm/hardirq.h to get better cache usage. KAO +@@ -447,12 +447,12 @@ extern char *softirq_to_name[NR_SOFTIRQS]; + + struct softirq_action + { +- void (*action)(struct softirq_action *); ++ void (*action)(void); + }; + + asmlinkage void do_softirq(void); + asmlinkage void __do_softirq(void); +-extern void open_softirq(int nr, void (*action)(struct softirq_action *)); ++extern void open_softirq(int nr, void (*action)(void)); + extern void softirq_init(void); + extern void __raise_softirq_irqoff(unsigned int nr); + +diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h +index 3875719..4cd454c 100644 +--- a/include/linux/kallsyms.h ++++ b/include/linux/kallsyms.h +@@ -15,7 +15,8 @@ + + struct module; + +-#ifdef CONFIG_KALLSYMS ++#if !defined(__INCLUDED_BY_HIDESYM) || !defined(CONFIG_KALLSYMS) ++#if defined(CONFIG_KALLSYMS) && !defined(CONFIG_GRKERNSEC_HIDESYM) + /* Lookup the address for a symbol. Returns 0 if not found. */ + unsigned long kallsyms_lookup_name(const char *name); + +@@ -99,6 +100,16 @@ static inline int lookup_symbol_attrs(unsigned long addr, unsigned long *size, u + /* Stupid that this does nothing, but I didn't create this mess. */ + #define __print_symbol(fmt, addr) + #endif /*CONFIG_KALLSYMS*/ ++#else /* when included by kallsyms.c, vsnprintf.c, or ++ arch/x86/kernel/dumpstack.c, with HIDESYM enabled */ ++extern void __print_symbol(const char *fmt, unsigned long address); ++extern int sprint_backtrace(char *buffer, unsigned long address); ++extern int sprint_symbol(char *buffer, unsigned long address); ++const char *kallsyms_lookup(unsigned long addr, ++ unsigned long *symbolsize, ++ unsigned long *offset, ++ char **modname, char *namebuf); ++#endif + + /* This macro allows us to keep printk typechecking */ + static __printf(1, 2) +diff --git a/include/linux/kgdb.h b/include/linux/kgdb.h +index c4d2fc1..5df9c19 100644 +--- a/include/linux/kgdb.h ++++ b/include/linux/kgdb.h +@@ -53,7 +53,7 @@ extern int kgdb_connected; + extern int kgdb_io_module_registered; + + extern atomic_t kgdb_setting_breakpoint; +-extern atomic_t kgdb_cpu_doing_single_step; ++extern atomic_unchecked_t kgdb_cpu_doing_single_step; + + extern struct task_struct *kgdb_usethread; + extern struct task_struct *kgdb_contthread; +@@ -252,7 +252,7 @@ struct kgdb_arch { + void (*disable_hw_break)(struct pt_regs *regs); + void (*remove_all_hw_break)(void); + void (*correct_hw_break)(void); +-}; ++} __do_const; + + /** + * struct kgdb_io - Describe the interface for an I/O driver to talk with KGDB. +@@ -277,7 +277,7 @@ struct kgdb_io { + void (*pre_exception) (void); + void (*post_exception) (void); + int is_console; +-}; ++} __do_const; + + extern struct kgdb_arch arch_kgdb_ops; + +diff --git a/include/linux/kmod.h b/include/linux/kmod.h +index dd99c32..da06047 100644 +--- a/include/linux/kmod.h ++++ b/include/linux/kmod.h +@@ -34,6 +34,8 @@ extern char modprobe_path[]; /* for sysctl */ + * usually useless though. */ + extern __printf(2, 3) + int __request_module(bool wait, const char *name, ...); ++extern __printf(3, 4) ++int ___request_module(bool wait, char *param_name, const char *name, ...); + #define request_module(mod...) __request_module(true, mod) + #define request_module_nowait(mod...) __request_module(false, mod) + #define try_then_request_module(x, mod...) \ +diff --git a/include/linux/kref.h b/include/linux/kref.h +index 9c07dce..a92fa71 100644 +--- a/include/linux/kref.h ++++ b/include/linux/kref.h +@@ -63,7 +63,7 @@ static inline void kref_get(struct kref *kref) + static inline int kref_sub(struct kref *kref, unsigned int count, + void (*release)(struct kref *kref)) + { +- WARN_ON(release == NULL); ++ BUG_ON(release == NULL); + + if (atomic_sub_and_test((int) count, &kref->refcount)) { + release(kref); +diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h +index 72cbf08..dd0201d 100644 +--- a/include/linux/kvm_host.h ++++ b/include/linux/kvm_host.h +@@ -322,7 +322,7 @@ void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); + void vcpu_load(struct kvm_vcpu *vcpu); + void vcpu_put(struct kvm_vcpu *vcpu); + +-int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, ++int kvm_init(const void *opaque, unsigned vcpu_size, unsigned vcpu_align, + struct module *module); + void kvm_exit(void); + +@@ -486,7 +486,7 @@ int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, + struct kvm_guest_debug *dbg); + int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); + +-int kvm_arch_init(void *opaque); ++int kvm_arch_init(const void *opaque); + void kvm_arch_exit(void); + + int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); +diff --git a/include/linux/libata.h b/include/linux/libata.h +index 6e887c7..4539601 100644 +--- a/include/linux/libata.h ++++ b/include/linux/libata.h +@@ -910,7 +910,7 @@ struct ata_port_operations { + * fields must be pointers. + */ + const struct ata_port_operations *inherits; +-}; ++} __do_const; + + struct ata_port_info { + unsigned long flags; +diff --git a/include/linux/mca.h b/include/linux/mca.h +index 3797270..7765ede 100644 +--- a/include/linux/mca.h ++++ b/include/linux/mca.h +@@ -80,7 +80,7 @@ struct mca_bus_accessor_functions { + int region); + void * (*mca_transform_memory)(struct mca_device *, + void *memory); +-}; ++} __no_const; + + struct mca_bus { + u64 default_dma_mask; +diff --git a/include/linux/memory.h b/include/linux/memory.h +index 1ac7f6e..a5794d0 100644 +--- a/include/linux/memory.h ++++ b/include/linux/memory.h +@@ -143,7 +143,7 @@ struct memory_accessor { + size_t count); + ssize_t (*write)(struct memory_accessor *, const char *buf, + off_t offset, size_t count); +-}; ++} __no_const; + + /* + * Kernel text modification mutex, used for code patching. Users of this lock +diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h +index ee96cd5..7823c3a 100644 +--- a/include/linux/mfd/abx500.h ++++ b/include/linux/mfd/abx500.h +@@ -455,6 +455,7 @@ struct abx500_ops { + int (*event_registers_startup_state_get) (struct device *, u8 *); + int (*startup_irq_enabled) (struct device *, unsigned int); + }; ++typedef struct abx500_ops __no_const abx500_ops_no_const; + + int abx500_register_ops(struct device *core_dev, struct abx500_ops *ops); + void abx500_remove_ops(struct device *dev); +diff --git a/include/linux/mfd/abx500/ux500_chargalg.h b/include/linux/mfd/abx500/ux500_chargalg.h +index 9b07725..3d55001 100644 +--- a/include/linux/mfd/abx500/ux500_chargalg.h ++++ b/include/linux/mfd/abx500/ux500_chargalg.h +@@ -19,7 +19,7 @@ struct ux500_charger_ops { + int (*enable) (struct ux500_charger *, int, int, int); + int (*kick_wd) (struct ux500_charger *); + int (*update_curr) (struct ux500_charger *, int); +-}; ++} __no_const; + + /** + * struct ux500_charger - power supply ux500 charger sub class +diff --git a/include/linux/mm.h b/include/linux/mm.h +index 74aa71b..4ae97ba 100644 +--- a/include/linux/mm.h ++++ b/include/linux/mm.h +@@ -116,7 +116,14 @@ extern unsigned int kobjsize(const void *objp); + + #define VM_CAN_NONLINEAR 0x08000000 /* Has ->fault & does nonlinear pages */ + #define VM_MIXEDMAP 0x10000000 /* Can contain "struct page" and pure PFN pages */ ++ ++#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_X86_32) ++#define VM_SAO 0x00000000 /* Strong Access Ordering (powerpc) */ ++#define VM_PAGEEXEC 0x20000000 /* vma->vm_page_prot needs special handling */ ++#else + #define VM_SAO 0x20000000 /* Strong Access Ordering (powerpc) */ ++#endif ++ + #define VM_PFN_AT_MMAP 0x40000000 /* PFNMAP vma that is fully mapped at mmap time */ + #define VM_MERGEABLE 0x80000000 /* KSM may merge identical pages */ + +@@ -1013,34 +1020,6 @@ int set_page_dirty(struct page *page); + int set_page_dirty_lock(struct page *page); + int clear_page_dirty_for_io(struct page *page); + +-/* Is the vma a continuation of the stack vma above it? */ +-static inline int vma_growsdown(struct vm_area_struct *vma, unsigned long addr) +-{ +- return vma && (vma->vm_end == addr) && (vma->vm_flags & VM_GROWSDOWN); +-} +- +-static inline int stack_guard_page_start(struct vm_area_struct *vma, +- unsigned long addr) +-{ +- return (vma->vm_flags & VM_GROWSDOWN) && +- (vma->vm_start == addr) && +- !vma_growsdown(vma->vm_prev, addr); +-} +- +-/* Is the vma a continuation of the stack vma below it? */ +-static inline int vma_growsup(struct vm_area_struct *vma, unsigned long addr) +-{ +- return vma && (vma->vm_start == addr) && (vma->vm_flags & VM_GROWSUP); +-} +- +-static inline int stack_guard_page_end(struct vm_area_struct *vma, +- unsigned long addr) +-{ +- return (vma->vm_flags & VM_GROWSUP) && +- (vma->vm_end == addr) && +- !vma_growsup(vma->vm_next, addr); +-} +- + extern pid_t + vm_is_stack(struct task_struct *task, struct vm_area_struct *vma, int in_group); + +@@ -1139,6 +1118,15 @@ static inline void sync_mm_rss(struct mm_struct *mm) + } + #endif + ++#ifdef CONFIG_MMU ++pgprot_t vm_get_page_prot(vm_flags_t vm_flags); ++#else ++static inline pgprot_t vm_get_page_prot(vm_flags_t vm_flags) ++{ ++ return __pgprot(0); ++} ++#endif ++ + int vma_wants_writenotify(struct vm_area_struct *vma); + + extern pte_t *__get_locked_pte(struct mm_struct *mm, unsigned long addr, +@@ -1157,8 +1145,15 @@ static inline int __pud_alloc(struct mm_struct *mm, pgd_t *pgd, + { + return 0; + } ++ ++static inline int __pud_alloc_kernel(struct mm_struct *mm, pgd_t *pgd, ++ unsigned long address) ++{ ++ return 0; ++} + #else + int __pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address); ++int __pud_alloc_kernel(struct mm_struct *mm, pgd_t *pgd, unsigned long address); + #endif + + #ifdef __PAGETABLE_PMD_FOLDED +@@ -1167,8 +1162,15 @@ static inline int __pmd_alloc(struct mm_struct *mm, pud_t *pud, + { + return 0; + } ++ ++static inline int __pmd_alloc_kernel(struct mm_struct *mm, pud_t *pud, ++ unsigned long address) ++{ ++ return 0; ++} + #else + int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address); ++int __pmd_alloc_kernel(struct mm_struct *mm, pud_t *pud, unsigned long address); + #endif + + int __pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma, +@@ -1186,11 +1188,23 @@ static inline pud_t *pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long a + NULL: pud_offset(pgd, address); + } + ++static inline pud_t *pud_alloc_kernel(struct mm_struct *mm, pgd_t *pgd, unsigned long address) ++{ ++ return (unlikely(pgd_none(*pgd)) && __pud_alloc_kernel(mm, pgd, address))? ++ NULL: pud_offset(pgd, address); ++} ++ + static inline pmd_t *pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address) + { + return (unlikely(pud_none(*pud)) && __pmd_alloc(mm, pud, address))? + NULL: pmd_offset(pud, address); + } ++ ++static inline pmd_t *pmd_alloc_kernel(struct mm_struct *mm, pud_t *pud, unsigned long address) ++{ ++ return (unlikely(pud_none(*pud)) && __pmd_alloc_kernel(mm, pud, address))? ++ NULL: pmd_offset(pud, address); ++} + #endif /* CONFIG_MMU && !__ARCH_HAS_4LEVEL_HACK */ + + #if USE_SPLIT_PTLOCKS +@@ -1400,6 +1414,7 @@ extern unsigned long do_mmap(struct file *, unsigned long, + unsigned long, unsigned long, + unsigned long, unsigned long); + extern int do_munmap(struct mm_struct *, unsigned long, size_t); ++extern int __do_munmap(struct mm_struct *, unsigned long, size_t); + + /* These take the mm semaphore themselves */ + extern unsigned long vm_brk(unsigned long, unsigned long); +@@ -1462,6 +1477,10 @@ extern struct vm_area_struct * find_vma(struct mm_struct * mm, unsigned long add + extern struct vm_area_struct * find_vma_prev(struct mm_struct * mm, unsigned long addr, + struct vm_area_struct **pprev); + ++extern struct vm_area_struct *pax_find_mirror_vma(struct vm_area_struct *vma); ++extern __must_check long pax_mirror_vma(struct vm_area_struct *vma_m, struct vm_area_struct *vma); ++extern void pax_mirror_file_pte(struct vm_area_struct *vma, unsigned long address, struct page *page_m, spinlock_t *ptl); ++ + /* Look up the first VMA which intersects the interval start_addr..end_addr-1, + NULL if none. Assume start_addr < end_addr. */ + static inline struct vm_area_struct * find_vma_intersection(struct mm_struct * mm, unsigned long start_addr, unsigned long end_addr) +@@ -1490,15 +1509,6 @@ static inline struct vm_area_struct *find_exact_vma(struct mm_struct *mm, + return vma; + } + +-#ifdef CONFIG_MMU +-pgprot_t vm_get_page_prot(unsigned long vm_flags); +-#else +-static inline pgprot_t vm_get_page_prot(unsigned long vm_flags) +-{ +- return __pgprot(0); +-} +-#endif +- + struct vm_area_struct *find_extend_vma(struct mm_struct *, unsigned long addr); + int remap_pfn_range(struct vm_area_struct *, unsigned long addr, + unsigned long pfn, unsigned long size, pgprot_t); +@@ -1602,7 +1612,7 @@ extern int unpoison_memory(unsigned long pfn); + extern int sysctl_memory_failure_early_kill; + extern int sysctl_memory_failure_recovery; + extern void shake_page(struct page *p, int access); +-extern atomic_long_t mce_bad_pages; ++extern atomic_long_unchecked_t mce_bad_pages; + extern int soft_offline_page(struct page *page, int flags); + + extern void dump_page(struct page *page); +@@ -1633,5 +1643,11 @@ static inline unsigned int debug_guardpage_minorder(void) { return 0; } + static inline bool page_is_guard(struct page *page) { return false; } + #endif /* CONFIG_DEBUG_PAGEALLOC */ + ++#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT ++extern void track_exec_limit(struct mm_struct *mm, unsigned long start, unsigned long end, unsigned long prot); ++#else ++static inline void track_exec_limit(struct mm_struct *mm, unsigned long start, unsigned long end, unsigned long prot) {} ++#endif ++ + #endif /* __KERNEL__ */ + #endif /* _LINUX_MM_H */ +diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h +index b35752f..41075a0 100644 +--- a/include/linux/mm_types.h ++++ b/include/linux/mm_types.h +@@ -262,6 +262,8 @@ struct vm_area_struct { + #ifdef CONFIG_NUMA + struct mempolicy *vm_policy; /* NUMA policy for the VMA */ + #endif ++ ++ struct vm_area_struct *vm_mirror;/* PaX: mirror vma or NULL */ + }; + + struct core_thread { +@@ -336,7 +338,7 @@ struct mm_struct { + unsigned long def_flags; + unsigned long nr_ptes; /* Page table pages */ + unsigned long start_code, end_code, start_data, end_data; +- unsigned long start_brk, brk, start_stack; ++ unsigned long brk_gap, start_brk, brk, start_stack; + unsigned long arg_start, arg_end, env_start, env_end; + + unsigned long saved_auxv[AT_VECTOR_SIZE]; /* for /proc/PID/auxv */ +@@ -398,6 +400,24 @@ struct mm_struct { + #ifdef CONFIG_CPUMASK_OFFSTACK + struct cpumask cpumask_allocation; + #endif ++ ++#if defined(CONFIG_PAX_EI_PAX) || defined(CONFIG_PAX_PT_PAX_FLAGS) || defined(CONFIG_PAX_XATTR_PAX_FLAGS) || defined(CONFIG_PAX_HAVE_ACL_FLAGS) || defined(CONFIG_PAX_HOOK_ACL_FLAGS) ++ unsigned long pax_flags; ++#endif ++ ++#ifdef CONFIG_PAX_DLRESOLVE ++ unsigned long call_dl_resolve; ++#endif ++ ++#if defined(CONFIG_PPC32) && defined(CONFIG_PAX_EMUSIGRT) ++ unsigned long call_syscall; ++#endif ++ ++#ifdef CONFIG_PAX_ASLR ++ unsigned long delta_mmap; /* randomized offset */ ++ unsigned long delta_stack; /* randomized offset */ ++#endif ++ + }; + + static inline void mm_init_cpumask(struct mm_struct *mm) +diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h +index 1d1b1e1..2a13c78 100644 +--- a/include/linux/mmu_notifier.h ++++ b/include/linux/mmu_notifier.h +@@ -255,12 +255,12 @@ static inline void mmu_notifier_mm_destroy(struct mm_struct *mm) + */ + #define ptep_clear_flush_notify(__vma, __address, __ptep) \ + ({ \ +- pte_t __pte; \ ++ pte_t ___pte; \ + struct vm_area_struct *___vma = __vma; \ + unsigned long ___address = __address; \ +- __pte = ptep_clear_flush(___vma, ___address, __ptep); \ ++ ___pte = ptep_clear_flush(___vma, ___address, __ptep); \ + mmu_notifier_invalidate_page(___vma->vm_mm, ___address); \ +- __pte; \ ++ ___pte; \ + }) + + #define pmdp_clear_flush_notify(__vma, __address, __pmdp) \ +diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h +index 5f6806b..49db2b2 100644 +--- a/include/linux/mmzone.h ++++ b/include/linux/mmzone.h +@@ -380,7 +380,7 @@ struct zone { + unsigned long flags; /* zone flags, see below */ + + /* Zone statistics */ +- atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS]; ++ atomic_long_unchecked_t vm_stat[NR_VM_ZONE_STAT_ITEMS]; + + /* + * The target ratio of ACTIVE_ANON to INACTIVE_ANON pages on +diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h +index 501da4c..ba79bb4 100644 +--- a/include/linux/mod_devicetable.h ++++ b/include/linux/mod_devicetable.h +@@ -12,7 +12,7 @@ + typedef unsigned long kernel_ulong_t; + #endif + +-#define PCI_ANY_ID (~0) ++#define PCI_ANY_ID ((__u16)~0) + + struct pci_device_id { + __u32 vendor, device; /* Vendor and device ID or PCI_ANY_ID*/ +@@ -131,7 +131,7 @@ struct usb_device_id { + #define USB_DEVICE_ID_MATCH_INT_SUBCLASS 0x0100 + #define USB_DEVICE_ID_MATCH_INT_PROTOCOL 0x0200 + +-#define HID_ANY_ID (~0) ++#define HID_ANY_ID (~0U) + + struct hid_device_id { + __u16 bus; +diff --git a/include/linux/module.h b/include/linux/module.h +index fbcafe2..e5d9587 100644 +--- a/include/linux/module.h ++++ b/include/linux/module.h +@@ -17,6 +17,7 @@ + #include <linux/moduleparam.h> + #include <linux/tracepoint.h> + #include <linux/export.h> ++#include <linux/fs.h> + + #include <linux/percpu.h> + #include <asm/module.h> +@@ -273,19 +274,16 @@ struct module + int (*init)(void); + + /* If this is non-NULL, vfree after init() returns */ +- void *module_init; ++ void *module_init_rx, *module_init_rw; + + /* Here is the actual code + data, vfree'd on unload. */ +- void *module_core; ++ void *module_core_rx, *module_core_rw; + + /* Here are the sizes of the init and core sections */ +- unsigned int init_size, core_size; ++ unsigned int init_size_rw, core_size_rw; + + /* The size of the executable code in each section. */ +- unsigned int init_text_size, core_text_size; +- +- /* Size of RO sections of the module (text+rodata) */ +- unsigned int init_ro_size, core_ro_size; ++ unsigned int init_size_rx, core_size_rx; + + /* Arch-specific module values */ + struct mod_arch_specific arch; +@@ -341,6 +339,10 @@ struct module + #ifdef CONFIG_EVENT_TRACING + struct ftrace_event_call **trace_events; + unsigned int num_trace_events; ++ struct file_operations trace_id; ++ struct file_operations trace_enable; ++ struct file_operations trace_format; ++ struct file_operations trace_filter; + #endif + #ifdef CONFIG_FTRACE_MCOUNT_RECORD + unsigned int num_ftrace_callsites; +@@ -388,16 +390,46 @@ bool is_module_address(unsigned long addr); + bool is_module_percpu_address(unsigned long addr); + bool is_module_text_address(unsigned long addr); + ++static inline int within_module_range(unsigned long addr, void *start, unsigned long size) ++{ ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ if (ktla_ktva(addr) >= (unsigned long)start && ++ ktla_ktva(addr) < (unsigned long)start + size) ++ return 1; ++#endif ++ ++ return ((void *)addr >= start && (void *)addr < start + size); ++} ++ ++static inline int within_module_core_rx(unsigned long addr, struct module *mod) ++{ ++ return within_module_range(addr, mod->module_core_rx, mod->core_size_rx); ++} ++ ++static inline int within_module_core_rw(unsigned long addr, struct module *mod) ++{ ++ return within_module_range(addr, mod->module_core_rw, mod->core_size_rw); ++} ++ ++static inline int within_module_init_rx(unsigned long addr, struct module *mod) ++{ ++ return within_module_range(addr, mod->module_init_rx, mod->init_size_rx); ++} ++ ++static inline int within_module_init_rw(unsigned long addr, struct module *mod) ++{ ++ return within_module_range(addr, mod->module_init_rw, mod->init_size_rw); ++} ++ + static inline int within_module_core(unsigned long addr, struct module *mod) + { +- return (unsigned long)mod->module_core <= addr && +- addr < (unsigned long)mod->module_core + mod->core_size; ++ return within_module_core_rx(addr, mod) || within_module_core_rw(addr, mod); + } + + static inline int within_module_init(unsigned long addr, struct module *mod) + { +- return (unsigned long)mod->module_init <= addr && +- addr < (unsigned long)mod->module_init + mod->init_size; ++ return within_module_init_rx(addr, mod) || within_module_init_rw(addr, mod); + } + + /* Search for module by name: must hold module_mutex. */ +diff --git a/include/linux/moduleloader.h b/include/linux/moduleloader.h +index b2be02e..72d2f78 100644 +--- a/include/linux/moduleloader.h ++++ b/include/linux/moduleloader.h +@@ -23,11 +23,23 @@ unsigned int arch_mod_section_prepend(struct module *mod, unsigned int section); + + /* Allocator used for allocating struct module, core sections and init + sections. Returns NULL on failure. */ +-void *module_alloc(unsigned long size); ++void *module_alloc(unsigned long size) __size_overflow(1); ++ ++#ifdef CONFIG_PAX_KERNEXEC ++void *module_alloc_exec(unsigned long size) __size_overflow(1); ++#else ++#define module_alloc_exec(x) module_alloc(x) ++#endif + + /* Free memory returned from module_alloc. */ + void module_free(struct module *mod, void *module_region); + ++#ifdef CONFIG_PAX_KERNEXEC ++void module_free_exec(struct module *mod, void *module_region); ++#else ++#define module_free_exec(x, y) module_free((x), (y)) ++#endif ++ + /* Apply the given relocation to the (simplified) ELF. Return -error + or 0. */ + int apply_relocate(Elf_Shdr *sechdrs, +diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h +index 944bc18..042d291 100644 +--- a/include/linux/moduleparam.h ++++ b/include/linux/moduleparam.h +@@ -286,7 +286,7 @@ static inline void __kernel_param_unlock(void) + * @len is usually just sizeof(string). + */ + #define module_param_string(name, string, len, perm) \ +- static const struct kparam_string __param_string_##name \ ++ static const struct kparam_string __param_string_##name __used \ + = { len, string }; \ + __module_param_call(MODULE_PARAM_PREFIX, name, \ + ¶m_ops_string, \ +@@ -424,7 +424,7 @@ extern int param_set_bint(const char *val, const struct kernel_param *kp); + */ + #define module_param_array_named(name, array, type, nump, perm) \ + param_check_##type(name, &(array)[0]); \ +- static const struct kparam_array __param_arr_##name \ ++ static const struct kparam_array __param_arr_##name __used \ + = { .max = ARRAY_SIZE(array), .num = nump, \ + .ops = ¶m_ops_##type, \ + .elemsize = sizeof(array[0]), .elem = array }; \ +diff --git a/include/linux/namei.h b/include/linux/namei.h +index ffc0213..2c1f2cb 100644 +--- a/include/linux/namei.h ++++ b/include/linux/namei.h +@@ -24,7 +24,7 @@ struct nameidata { + unsigned seq; + int last_type; + unsigned depth; +- char *saved_names[MAX_NESTED_LINKS + 1]; ++ const char *saved_names[MAX_NESTED_LINKS + 1]; + + /* Intent data */ + union { +@@ -94,12 +94,12 @@ extern int follow_up(struct path *); + extern struct dentry *lock_rename(struct dentry *, struct dentry *); + extern void unlock_rename(struct dentry *, struct dentry *); + +-static inline void nd_set_link(struct nameidata *nd, char *path) ++static inline void nd_set_link(struct nameidata *nd, const char *path) + { + nd->saved_names[nd->depth] = path; + } + +-static inline char *nd_get_link(struct nameidata *nd) ++static inline const char *nd_get_link(const struct nameidata *nd) + { + return nd->saved_names[nd->depth]; + } +diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h +index 33900a5..2072000 100644 +--- a/include/linux/netdevice.h ++++ b/include/linux/netdevice.h +@@ -1003,6 +1003,7 @@ struct net_device_ops { + int (*ndo_neigh_construct)(struct neighbour *n); + void (*ndo_neigh_destroy)(struct neighbour *n); + }; ++typedef struct net_device_ops __no_const net_device_ops_no_const; + + /* + * The DEVICE structure. +@@ -1064,7 +1065,7 @@ struct net_device { + int iflink; + + struct net_device_stats stats; +- atomic_long_t rx_dropped; /* dropped packets by core network ++ atomic_long_unchecked_t rx_dropped; /* dropped packets by core network + * Do not use this in drivers. + */ + +diff --git a/include/linux/netfilter/xt_gradm.h b/include/linux/netfilter/xt_gradm.h +new file mode 100644 +index 0000000..33f4af8 +--- /dev/null ++++ b/include/linux/netfilter/xt_gradm.h +@@ -0,0 +1,9 @@ ++#ifndef _LINUX_NETFILTER_XT_GRADM_H ++#define _LINUX_NETFILTER_XT_GRADM_H 1 ++ ++struct xt_gradm_mtinfo { ++ __u16 flags; ++ __u16 invflags; ++}; ++ ++#endif +diff --git a/include/linux/of_pdt.h b/include/linux/of_pdt.h +index c65a18a..0c05f3a 100644 +--- a/include/linux/of_pdt.h ++++ b/include/linux/of_pdt.h +@@ -32,7 +32,7 @@ struct of_pdt_ops { + + /* return 0 on success; fill in 'len' with number of bytes in path */ + int (*pkg2path)(phandle node, char *buf, const int buflen, int *len); +-}; ++} __no_const; + + extern void *prom_early_alloc(unsigned long size); + +diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h +index a4c5624..79d6d88 100644 +--- a/include/linux/oprofile.h ++++ b/include/linux/oprofile.h +@@ -139,9 +139,9 @@ int oprofilefs_create_ulong(struct super_block * sb, struct dentry * root, + int oprofilefs_create_ro_ulong(struct super_block * sb, struct dentry * root, + char const * name, ulong * val); + +-/** Create a file for read-only access to an atomic_t. */ ++/** Create a file for read-only access to an atomic_unchecked_t. */ + int oprofilefs_create_ro_atomic(struct super_block * sb, struct dentry * root, +- char const * name, atomic_t * val); ++ char const * name, atomic_unchecked_t * val); + + /** create a directory */ + struct dentry * oprofilefs_mkdir(struct super_block * sb, struct dentry * root, +diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h +index ddbb6a9..be1680e 100644 +--- a/include/linux/perf_event.h ++++ b/include/linux/perf_event.h +@@ -879,8 +879,8 @@ struct perf_event { + + enum perf_event_active_state state; + unsigned int attach_state; +- local64_t count; +- atomic64_t child_count; ++ local64_t count; /* PaX: fix it one day */ ++ atomic64_unchecked_t child_count; + + /* + * These are the total time in nanoseconds that the event +@@ -931,8 +931,8 @@ struct perf_event { + * These accumulate total time (in nanoseconds) that children + * events have been enabled and running, respectively. + */ +- atomic64_t child_total_time_enabled; +- atomic64_t child_total_time_running; ++ atomic64_unchecked_t child_total_time_enabled; ++ atomic64_unchecked_t child_total_time_running; + + /* + * Protect attach/detach and child_list: +diff --git a/include/linux/personality.h b/include/linux/personality.h +index 8fc7dd1a..c19d89e 100644 +--- a/include/linux/personality.h ++++ b/include/linux/personality.h +@@ -44,6 +44,7 @@ enum { + #define PER_CLEAR_ON_SETID (READ_IMPLIES_EXEC | \ + ADDR_NO_RANDOMIZE | \ + ADDR_COMPAT_LAYOUT | \ ++ ADDR_LIMIT_3GB | \ + MMAP_PAGE_ZERO) + + /* +diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h +index e1ac1ce..0675fed 100644 +--- a/include/linux/pipe_fs_i.h ++++ b/include/linux/pipe_fs_i.h +@@ -45,9 +45,9 @@ struct pipe_buffer { + struct pipe_inode_info { + wait_queue_head_t wait; + unsigned int nrbufs, curbuf, buffers; +- unsigned int readers; +- unsigned int writers; +- unsigned int waiting_writers; ++ atomic_t readers; ++ atomic_t writers; ++ atomic_t waiting_writers; + unsigned int r_counter; + unsigned int w_counter; + struct page *tmp_page; +diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h +index 609daae..5392427 100644 +--- a/include/linux/pm_runtime.h ++++ b/include/linux/pm_runtime.h +@@ -97,7 +97,7 @@ static inline bool pm_runtime_callbacks_present(struct device *dev) + + static inline void pm_runtime_mark_last_busy(struct device *dev) + { +- ACCESS_ONCE(dev->power.last_busy) = jiffies; ++ ACCESS_ONCE_RW(dev->power.last_busy) = jiffies; + } + + #else /* !CONFIG_PM_RUNTIME */ +diff --git a/include/linux/poison.h b/include/linux/poison.h +index 2110a81..13a11bb 100644 +--- a/include/linux/poison.h ++++ b/include/linux/poison.h +@@ -19,8 +19,8 @@ + * under normal circumstances, used to verify that nobody uses + * non-initialized list entries. + */ +-#define LIST_POISON1 ((void *) 0x00100100 + POISON_POINTER_DELTA) +-#define LIST_POISON2 ((void *) 0x00200200 + POISON_POINTER_DELTA) ++#define LIST_POISON1 ((void *) (long)0xFFFFFF01) ++#define LIST_POISON2 ((void *) (long)0xFFFFFF02) + + /********** include/linux/timer.h **********/ + /* +diff --git a/include/linux/preempt.h b/include/linux/preempt.h +index 5a710b9..0b0dab9 100644 +--- a/include/linux/preempt.h ++++ b/include/linux/preempt.h +@@ -126,7 +126,7 @@ struct preempt_ops { + void (*sched_in)(struct preempt_notifier *notifier, int cpu); + void (*sched_out)(struct preempt_notifier *notifier, + struct task_struct *next); +-}; ++} __no_const; + + /** + * preempt_notifier - key for installing preemption notifiers +diff --git a/include/linux/printk.h b/include/linux/printk.h +index 0525927..a5388b6 100644 +--- a/include/linux/printk.h ++++ b/include/linux/printk.h +@@ -94,6 +94,8 @@ void early_printk(const char *fmt, ...); + extern int printk_needs_cpu(int cpu); + extern void printk_tick(void); + ++extern int kptr_restrict; ++ + #ifdef CONFIG_PRINTK + asmlinkage __printf(1, 0) + int vprintk(const char *fmt, va_list args); +@@ -117,7 +119,6 @@ extern bool printk_timed_ratelimit(unsigned long *caller_jiffies, + + extern int printk_delay_msec; + extern int dmesg_restrict; +-extern int kptr_restrict; + + void log_buf_kexec_setup(void); + void __init setup_log_buf(int early); +diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h +index 85c5073..51fac8b 100644 +--- a/include/linux/proc_fs.h ++++ b/include/linux/proc_fs.h +@@ -155,6 +155,18 @@ static inline struct proc_dir_entry *proc_create(const char *name, umode_t mode, + return proc_create_data(name, mode, parent, proc_fops, NULL); + } + ++static inline struct proc_dir_entry *proc_create_grsec(const char *name, umode_t mode, ++ struct proc_dir_entry *parent, const struct file_operations *proc_fops) ++{ ++#ifdef CONFIG_GRKERNSEC_PROC_USER ++ return proc_create_data(name, S_IRUSR, parent, proc_fops, NULL); ++#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++ return proc_create_data(name, S_IRUSR | S_IRGRP, parent, proc_fops, NULL); ++#else ++ return proc_create_data(name, mode, parent, proc_fops, NULL); ++#endif ++} ++ + static inline struct proc_dir_entry *create_proc_read_entry(const char *name, + umode_t mode, struct proc_dir_entry *base, + read_proc_t *read_proc, void * data) +@@ -258,7 +270,7 @@ union proc_op { + int (*proc_show)(struct seq_file *m, + struct pid_namespace *ns, struct pid *pid, + struct task_struct *task); +-}; ++} __no_const; + + struct ctl_table_header; + struct ctl_table; +diff --git a/include/linux/random.h b/include/linux/random.h +index 8f74538..02a1012 100644 +--- a/include/linux/random.h ++++ b/include/linux/random.h +@@ -69,12 +69,17 @@ void srandom32(u32 seed); + + u32 prandom32(struct rnd_state *); + ++static inline unsigned long pax_get_random_long(void) ++{ ++ return random32() + (sizeof(long) > 4 ? (unsigned long)random32() << 32 : 0); ++} ++ + /* + * Handle minimum values for seeds + */ + static inline u32 __seed(u32 x, u32 m) + { +- return (x < m) ? x + m : x; ++ return (x <= m) ? x + m + 1 : x; + } + + /** +diff --git a/include/linux/reboot.h b/include/linux/reboot.h +index e0879a7..a12f962 100644 +--- a/include/linux/reboot.h ++++ b/include/linux/reboot.h +@@ -52,9 +52,9 @@ extern int unregister_reboot_notifier(struct notifier_block *); + * Architecture-specific implementations of sys_reboot commands. + */ + +-extern void machine_restart(char *cmd); +-extern void machine_halt(void); +-extern void machine_power_off(void); ++extern void machine_restart(char *cmd) __noreturn; ++extern void machine_halt(void) __noreturn; ++extern void machine_power_off(void) __noreturn; + + extern void machine_shutdown(void); + struct pt_regs; +@@ -65,9 +65,9 @@ extern void machine_crash_shutdown(struct pt_regs *); + */ + + extern void kernel_restart_prepare(char *cmd); +-extern void kernel_restart(char *cmd); +-extern void kernel_halt(void); +-extern void kernel_power_off(void); ++extern void kernel_restart(char *cmd) __noreturn; ++extern void kernel_halt(void) __noreturn; ++extern void kernel_power_off(void) __noreturn; + + extern int C_A_D; /* for sysctl */ + void ctrl_alt_del(void); +@@ -81,7 +81,7 @@ extern int orderly_poweroff(bool force); + * Emergency restart, callable from an interrupt handler. + */ + +-extern void emergency_restart(void); ++extern void emergency_restart(void) __noreturn; + #include <asm/emergency-restart.h> + + #endif +diff --git a/include/linux/relay.h b/include/linux/relay.h +index 91cacc3..b55ff74 100644 +--- a/include/linux/relay.h ++++ b/include/linux/relay.h +@@ -160,7 +160,7 @@ struct rchan_callbacks + * The callback should return 0 if successful, negative if not. + */ + int (*remove_buf_file)(struct dentry *dentry); +-}; ++} __no_const; + + /* + * CONFIG_RELAY kernel API, kernel/relay.c +diff --git a/include/linux/rfkill.h b/include/linux/rfkill.h +index 6fdf027..ff72610 100644 +--- a/include/linux/rfkill.h ++++ b/include/linux/rfkill.h +@@ -147,6 +147,7 @@ struct rfkill_ops { + void (*query)(struct rfkill *rfkill, void *data); + int (*set_block)(void *data, bool blocked); + }; ++typedef struct rfkill_ops __no_const rfkill_ops_no_const; + + #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) + /** +diff --git a/include/linux/rio.h b/include/linux/rio.h +index 4d50611..c6858a2 100644 +--- a/include/linux/rio.h ++++ b/include/linux/rio.h +@@ -315,7 +315,7 @@ struct rio_ops { + int mbox, void *buffer, size_t len); + int (*add_inb_buffer)(struct rio_mport *mport, int mbox, void *buf); + void *(*get_inb_message)(struct rio_mport *mport, int mbox); +-}; ++} __no_const; + + #define RIO_RESOURCE_MEM 0x00000100 + #define RIO_RESOURCE_DOORBELL 0x00000200 +diff --git a/include/linux/rmap.h b/include/linux/rmap.h +index fd07c45..4676b8e 100644 +--- a/include/linux/rmap.h ++++ b/include/linux/rmap.h +@@ -119,9 +119,9 @@ static inline void anon_vma_unlock(struct anon_vma *anon_vma) + void anon_vma_init(void); /* create anon_vma_cachep */ + int anon_vma_prepare(struct vm_area_struct *); + void unlink_anon_vmas(struct vm_area_struct *); +-int anon_vma_clone(struct vm_area_struct *, struct vm_area_struct *); ++int anon_vma_clone(struct vm_area_struct *, const struct vm_area_struct *); + void anon_vma_moveto_tail(struct vm_area_struct *); +-int anon_vma_fork(struct vm_area_struct *, struct vm_area_struct *); ++int anon_vma_fork(struct vm_area_struct *, const struct vm_area_struct *); + + static inline void anon_vma_merge(struct vm_area_struct *vma, + struct vm_area_struct *next) +diff --git a/include/linux/sched.h b/include/linux/sched.h +index 81a173c..85ccd8f 100644 +--- a/include/linux/sched.h ++++ b/include/linux/sched.h +@@ -100,6 +100,7 @@ struct bio_list; + struct fs_struct; + struct perf_event_context; + struct blk_plug; ++struct linux_binprm; + + /* + * List of flags we want to share for kernel threads, +@@ -382,10 +383,13 @@ struct user_namespace; + #define DEFAULT_MAX_MAP_COUNT (USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN) + + extern int sysctl_max_map_count; ++extern unsigned long sysctl_heap_stack_gap; + + #include <linux/aio.h> + + #ifdef CONFIG_MMU ++extern bool check_heap_stack_gap(const struct vm_area_struct *vma, unsigned long addr, unsigned long len); ++extern unsigned long skip_heap_stack_gap(const struct vm_area_struct *vma, unsigned long len); + extern void arch_pick_mmap_layout(struct mm_struct *mm); + extern unsigned long + arch_get_unmapped_area(struct file *, unsigned long, unsigned long, +@@ -643,6 +647,17 @@ struct signal_struct { + #ifdef CONFIG_TASKSTATS + struct taskstats *stats; + #endif ++ ++#ifdef CONFIG_GRKERNSEC ++ u32 curr_ip; ++ u32 saved_ip; ++ u32 gr_saddr; ++ u32 gr_daddr; ++ u16 gr_sport; ++ u16 gr_dport; ++ u8 used_accept:1; ++#endif ++ + #ifdef CONFIG_AUDIT + unsigned audit_tty; + struct tty_audit_buf *tty_audit_buf; +@@ -726,6 +741,11 @@ struct user_struct { + struct key *session_keyring; /* UID's default session keyring */ + #endif + ++#if defined(CONFIG_GRKERNSEC_KERN_LOCKOUT) || defined(CONFIG_GRKERNSEC_BRUTE) ++ unsigned int banned; ++ unsigned long ban_expires; ++#endif ++ + /* Hash table maintenance information */ + struct hlist_node uidhash_node; + uid_t uid; +@@ -1386,8 +1406,8 @@ struct task_struct { + struct list_head thread_group; + + struct completion *vfork_done; /* for vfork() */ +- int __user *set_child_tid; /* CLONE_CHILD_SETTID */ +- int __user *clear_child_tid; /* CLONE_CHILD_CLEARTID */ ++ pid_t __user *set_child_tid; /* CLONE_CHILD_SETTID */ ++ pid_t __user *clear_child_tid; /* CLONE_CHILD_CLEARTID */ + + cputime_t utime, stime, utimescaled, stimescaled; + cputime_t gtime; +@@ -1403,13 +1423,6 @@ struct task_struct { + struct task_cputime cputime_expires; + struct list_head cpu_timers[3]; + +-/* process credentials */ +- const struct cred __rcu *real_cred; /* objective and real subjective task +- * credentials (COW) */ +- const struct cred __rcu *cred; /* effective (overridable) subjective task +- * credentials (COW) */ +- struct cred *replacement_session_keyring; /* for KEYCTL_SESSION_TO_PARENT */ +- + char comm[TASK_COMM_LEN]; /* executable name excluding path + - access with [gs]et_task_comm (which lock + it with task_lock()) +@@ -1426,8 +1439,16 @@ struct task_struct { + #endif + /* CPU-specific state of this task */ + struct thread_struct thread; ++/* thread_info moved to task_struct */ ++#ifdef CONFIG_X86 ++ struct thread_info tinfo; ++#endif + /* filesystem information */ + struct fs_struct *fs; ++ ++ const struct cred __rcu *cred; /* effective (overridable) subjective task ++ * credentials (COW) */ ++ + /* open file information */ + struct files_struct *files; + /* namespaces */ +@@ -1469,6 +1490,11 @@ struct task_struct { + struct rt_mutex_waiter *pi_blocked_on; + #endif + ++/* process credentials */ ++ const struct cred __rcu *real_cred; /* objective and real subjective task ++ * credentials (COW) */ ++ struct cred *replacement_session_keyring; /* for KEYCTL_SESSION_TO_PARENT */ ++ + #ifdef CONFIG_DEBUG_MUTEXES + /* mutex deadlock detection */ + struct mutex_waiter *blocked_on; +@@ -1585,6 +1611,27 @@ struct task_struct { + unsigned long default_timer_slack_ns; + + struct list_head *scm_work_list; ++ ++#ifdef CONFIG_GRKERNSEC ++ /* grsecurity */ ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ u64 exec_id; ++#endif ++#ifdef CONFIG_GRKERNSEC_SETXID ++ const struct cred *delayed_cred; ++#endif ++ struct dentry *gr_chroot_dentry; ++ struct acl_subject_label *acl; ++ struct acl_role_label *role; ++ struct file *exec_file; ++ u16 acl_role_id; ++ /* is this the task that authenticated to the special role */ ++ u8 acl_sp_role; ++ u8 is_writable; ++ u8 brute; ++ u8 gr_is_chrooted; ++#endif ++ + #ifdef CONFIG_FUNCTION_GRAPH_TRACER + /* Index of current stored address in ret_stack */ + int curr_ret_stack; +@@ -1619,6 +1666,51 @@ struct task_struct { + #endif + }; + ++#define MF_PAX_PAGEEXEC 0x01000000 /* Paging based non-executable pages */ ++#define MF_PAX_EMUTRAMP 0x02000000 /* Emulate trampolines */ ++#define MF_PAX_MPROTECT 0x04000000 /* Restrict mprotect() */ ++#define MF_PAX_RANDMMAP 0x08000000 /* Randomize mmap() base */ ++/*#define MF_PAX_RANDEXEC 0x10000000*/ /* Randomize ET_EXEC base */ ++#define MF_PAX_SEGMEXEC 0x20000000 /* Segmentation based non-executable pages */ ++ ++#ifdef CONFIG_PAX_SOFTMODE ++extern int pax_softmode; ++#endif ++ ++extern int pax_check_flags(unsigned long *); ++ ++/* if tsk != current then task_lock must be held on it */ ++#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR) ++static inline unsigned long pax_get_flags(struct task_struct *tsk) ++{ ++ if (likely(tsk->mm)) ++ return tsk->mm->pax_flags; ++ else ++ return 0UL; ++} ++ ++/* if tsk != current then task_lock must be held on it */ ++static inline long pax_set_flags(struct task_struct *tsk, unsigned long flags) ++{ ++ if (likely(tsk->mm)) { ++ tsk->mm->pax_flags = flags; ++ return 0; ++ } ++ return -EINVAL; ++} ++#endif ++ ++#ifdef CONFIG_PAX_HAVE_ACL_FLAGS ++extern void pax_set_initial_flags(struct linux_binprm *bprm); ++#elif defined(CONFIG_PAX_HOOK_ACL_FLAGS) ++extern void (*pax_set_initial_flags_func)(struct linux_binprm *bprm); ++#endif ++ ++extern void pax_report_fault(struct pt_regs *regs, void *pc, void *sp); ++extern void pax_report_insns(struct pt_regs *regs, void *pc, void *sp); ++extern void pax_report_refcount_overflow(struct pt_regs *regs); ++extern __noreturn void pax_report_usercopy(const void *ptr, unsigned long len, bool to, const char *type); ++ + /* Future-safe accessor for struct task_struct's cpus_allowed. */ + #define tsk_cpus_allowed(tsk) (&(tsk)->cpus_allowed) + +@@ -2138,7 +2230,9 @@ void yield(void); + extern struct exec_domain default_exec_domain; + + union thread_union { ++#ifndef CONFIG_X86 + struct thread_info thread_info; ++#endif + unsigned long stack[THREAD_SIZE/sizeof(long)]; + }; + +@@ -2171,6 +2265,7 @@ extern struct pid_namespace init_pid_ns; + */ + + extern struct task_struct *find_task_by_vpid(pid_t nr); ++extern struct task_struct *find_task_by_vpid_unrestricted(pid_t nr); + extern struct task_struct *find_task_by_pid_ns(pid_t nr, + struct pid_namespace *ns); + +@@ -2314,7 +2409,7 @@ extern void __cleanup_sighand(struct sighand_struct *); + extern void exit_itimers(struct signal_struct *); + extern void flush_itimer_signals(void); + +-extern void do_group_exit(int); ++extern __noreturn void do_group_exit(int); + + extern void daemonize(const char *, ...); + extern int allow_signal(int); +@@ -2515,13 +2610,17 @@ static inline unsigned long *end_of_stack(struct task_struct *p) + + #endif + +-static inline int object_is_on_stack(void *obj) ++static inline int object_starts_on_stack(void *obj) + { +- void *stack = task_stack_page(current); ++ const void *stack = task_stack_page(current); + + return (obj >= stack) && (obj < (stack + THREAD_SIZE)); + } + ++#ifdef CONFIG_PAX_USERCOPY ++extern int object_is_on_stack(const void *obj, unsigned long len); ++#endif ++ + extern void thread_info_cache_init(void); + + #ifdef CONFIG_DEBUG_STACK_USAGE +diff --git a/include/linux/screen_info.h b/include/linux/screen_info.h +index 899fbb4..1cb4138 100644 +--- a/include/linux/screen_info.h ++++ b/include/linux/screen_info.h +@@ -43,7 +43,8 @@ struct screen_info { + __u16 pages; /* 0x32 */ + __u16 vesa_attributes; /* 0x34 */ + __u32 capabilities; /* 0x36 */ +- __u8 _reserved[6]; /* 0x3a */ ++ __u16 vesapm_size; /* 0x3a */ ++ __u8 _reserved[4]; /* 0x3c */ + } __attribute__((packed)); + + #define VIDEO_TYPE_MDA 0x10 /* Monochrome Text Display */ +diff --git a/include/linux/security.h b/include/linux/security.h +index 673afbb..2b7454b 100644 +--- a/include/linux/security.h ++++ b/include/linux/security.h +@@ -26,6 +26,7 @@ + #include <linux/capability.h> + #include <linux/slab.h> + #include <linux/err.h> ++#include <linux/grsecurity.h> + + struct linux_binprm; + struct cred; +diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h +index fc61854..d7c490b 100644 +--- a/include/linux/seq_file.h ++++ b/include/linux/seq_file.h +@@ -25,6 +25,9 @@ struct seq_file { + struct mutex lock; + const struct seq_operations *op; + int poll_event; ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ u64 exec_id; ++#endif + void *private; + }; + +@@ -34,6 +37,7 @@ struct seq_operations { + void * (*next) (struct seq_file *m, void *v, loff_t *pos); + int (*show) (struct seq_file *m, void *v); + }; ++typedef struct seq_operations __no_const seq_operations_no_const; + + #define SEQ_SKIP 1 + +diff --git a/include/linux/shm.h b/include/linux/shm.h +index 92808b8..c28cac4 100644 +--- a/include/linux/shm.h ++++ b/include/linux/shm.h +@@ -98,6 +98,10 @@ struct shmid_kernel /* private to the kernel */ + + /* The task created the shm object. NULL if the task is dead. */ + struct task_struct *shm_creator; ++#ifdef CONFIG_GRKERNSEC ++ time_t shm_createtime; ++ pid_t shm_lapid; ++#endif + }; + + /* shm_mode upper byte flags */ +diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h +index c1bae8d..2dbcd31 100644 +--- a/include/linux/skbuff.h ++++ b/include/linux/skbuff.h +@@ -663,7 +663,7 @@ static inline struct skb_shared_hwtstamps *skb_hwtstamps(struct sk_buff *skb) + */ + static inline int skb_queue_empty(const struct sk_buff_head *list) + { +- return list->next == (struct sk_buff *)list; ++ return list->next == (const struct sk_buff *)list; + } + + /** +@@ -676,7 +676,7 @@ static inline int skb_queue_empty(const struct sk_buff_head *list) + static inline bool skb_queue_is_last(const struct sk_buff_head *list, + const struct sk_buff *skb) + { +- return skb->next == (struct sk_buff *)list; ++ return skb->next == (const struct sk_buff *)list; + } + + /** +@@ -689,7 +689,7 @@ static inline bool skb_queue_is_last(const struct sk_buff_head *list, + static inline bool skb_queue_is_first(const struct sk_buff_head *list, + const struct sk_buff *skb) + { +- return skb->prev == (struct sk_buff *)list; ++ return skb->prev == (const struct sk_buff *)list; + } + + /** +@@ -1584,7 +1584,7 @@ static inline int pskb_network_may_pull(struct sk_buff *skb, unsigned int len) + * NET_IP_ALIGN(2) + ethernet_header(14) + IP_header(20/40) + ports(8) + */ + #ifndef NET_SKB_PAD +-#define NET_SKB_PAD max(32, L1_CACHE_BYTES) ++#define NET_SKB_PAD max(_AC(32,UL), L1_CACHE_BYTES) + #endif + + extern int ___pskb_trim(struct sk_buff *skb, unsigned int len); +diff --git a/include/linux/slab.h b/include/linux/slab.h +index a595dce..c403597 100644 +--- a/include/linux/slab.h ++++ b/include/linux/slab.h +@@ -11,12 +11,20 @@ + + #include <linux/gfp.h> + #include <linux/types.h> ++#include <linux/err.h> + + /* + * Flags to pass to kmem_cache_create(). + * The ones marked DEBUG are only valid if CONFIG_SLAB_DEBUG is set. + */ + #define SLAB_DEBUG_FREE 0x00000100UL /* DEBUG: Perform (expensive) checks on free */ ++ ++#ifdef CONFIG_PAX_USERCOPY ++#define SLAB_USERCOPY 0x00000200UL /* PaX: Allow copying objs to/from userland */ ++#else ++#define SLAB_USERCOPY 0x00000000UL ++#endif ++ + #define SLAB_RED_ZONE 0x00000400UL /* DEBUG: Red zone objs in a cache */ + #define SLAB_POISON 0x00000800UL /* DEBUG: Poison objects */ + #define SLAB_HWCACHE_ALIGN 0x00002000UL /* Align objs on cache lines */ +@@ -87,10 +95,13 @@ + * ZERO_SIZE_PTR can be passed to kfree though in the same way that NULL can. + * Both make kfree a no-op. + */ +-#define ZERO_SIZE_PTR ((void *)16) ++#define ZERO_SIZE_PTR \ ++({ \ ++ BUILD_BUG_ON(!(MAX_ERRNO & ~PAGE_MASK));\ ++ (void *)(-MAX_ERRNO-1L); \ ++}) + +-#define ZERO_OR_NULL_PTR(x) ((unsigned long)(x) <= \ +- (unsigned long)ZERO_SIZE_PTR) ++#define ZERO_OR_NULL_PTR(x) ((unsigned long)(x) - 1 >= (unsigned long)ZERO_SIZE_PTR - 1) + + /* + * struct kmem_cache related prototypes +@@ -161,6 +172,7 @@ void * __must_check krealloc(const void *, size_t, gfp_t); + void kfree(const void *); + void kzfree(const void *); + size_t ksize(const void *); ++void check_object_size(const void *ptr, unsigned long n, bool to); + + /* + * Allocator specific definitions. These are mainly used to establish optimized +@@ -240,6 +252,7 @@ size_t ksize(const void *); + * for general use, and so are not documented here. For a full list of + * potential flags, always refer to linux/gfp.h. + */ ++static void *kmalloc_array(size_t n, size_t size, gfp_t flags) __size_overflow(1, 2); + static inline void *kmalloc_array(size_t n, size_t size, gfp_t flags) + { + if (size != 0 && n > ULONG_MAX / size) +@@ -298,7 +311,7 @@ static inline void *kmem_cache_alloc_node(struct kmem_cache *cachep, + */ + #if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB) || \ + (defined(CONFIG_SLAB) && defined(CONFIG_TRACING)) +-extern void *__kmalloc_track_caller(size_t, gfp_t, unsigned long); ++extern void *__kmalloc_track_caller(size_t, gfp_t, unsigned long) __size_overflow(1); + #define kmalloc_track_caller(size, flags) \ + __kmalloc_track_caller(size, flags, _RET_IP_) + #else +@@ -317,7 +330,7 @@ extern void *__kmalloc_track_caller(size_t, gfp_t, unsigned long); + */ + #if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB) || \ + (defined(CONFIG_SLAB) && defined(CONFIG_TRACING)) +-extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, unsigned long); ++extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, unsigned long) __size_overflow(1); + #define kmalloc_node_track_caller(size, flags, node) \ + __kmalloc_node_track_caller(size, flags, node, \ + _RET_IP_) +diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h +index fbd1117..d4d8ef8 100644 +--- a/include/linux/slab_def.h ++++ b/include/linux/slab_def.h +@@ -66,10 +66,10 @@ struct kmem_cache { + unsigned long node_allocs; + unsigned long node_frees; + unsigned long node_overflow; +- atomic_t allochit; +- atomic_t allocmiss; +- atomic_t freehit; +- atomic_t freemiss; ++ atomic_unchecked_t allochit; ++ atomic_unchecked_t allocmiss; ++ atomic_unchecked_t freehit; ++ atomic_unchecked_t freemiss; + + /* + * If debugging is enabled, then the allocator can add additional +@@ -107,7 +107,7 @@ struct cache_sizes { + extern struct cache_sizes malloc_sizes[]; + + void *kmem_cache_alloc(struct kmem_cache *, gfp_t); +-void *__kmalloc(size_t size, gfp_t flags); ++void *__kmalloc(size_t size, gfp_t flags) __size_overflow(1); + + #ifdef CONFIG_TRACING + extern void *kmem_cache_alloc_trace(size_t size, +@@ -160,7 +160,7 @@ found: + } + + #ifdef CONFIG_NUMA +-extern void *__kmalloc_node(size_t size, gfp_t flags, int node); ++extern void *__kmalloc_node(size_t size, gfp_t flags, int node) __size_overflow(1); + extern void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node); + + #ifdef CONFIG_TRACING +diff --git a/include/linux/slob_def.h b/include/linux/slob_def.h +index 0ec00b3..39cb7fc 100644 +--- a/include/linux/slob_def.h ++++ b/include/linux/slob_def.h +@@ -9,7 +9,7 @@ static __always_inline void *kmem_cache_alloc(struct kmem_cache *cachep, + return kmem_cache_alloc_node(cachep, flags, -1); + } + +-void *__kmalloc_node(size_t size, gfp_t flags, int node); ++void *__kmalloc_node(size_t size, gfp_t flags, int node) __size_overflow(1); + + static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node) + { +@@ -29,6 +29,7 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags) + return __kmalloc_node(size, flags, -1); + } + ++static __always_inline void *__kmalloc(size_t size, gfp_t flags) __size_overflow(1); + static __always_inline void *__kmalloc(size_t size, gfp_t flags) + { + return kmalloc(size, flags); +diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h +index c2f8c8b..be9e036 100644 +--- a/include/linux/slub_def.h ++++ b/include/linux/slub_def.h +@@ -92,7 +92,7 @@ struct kmem_cache { + struct kmem_cache_order_objects max; + struct kmem_cache_order_objects min; + gfp_t allocflags; /* gfp flags to use on each alloc */ +- int refcount; /* Refcount for slab cache destroy */ ++ atomic_t refcount; /* Refcount for slab cache destroy */ + void (*ctor)(void *); + int inuse; /* Offset to metadata */ + int align; /* Alignment */ +@@ -153,6 +153,7 @@ extern struct kmem_cache *kmalloc_caches[SLUB_PAGE_SHIFT]; + * Sorry that the following has to be that ugly but some versions of GCC + * have trouble with constant propagation and loops. + */ ++static __always_inline int kmalloc_index(size_t size) __size_overflow(1); + static __always_inline int kmalloc_index(size_t size) + { + if (!size) +@@ -218,7 +219,7 @@ static __always_inline struct kmem_cache *kmalloc_slab(size_t size) + } + + void *kmem_cache_alloc(struct kmem_cache *, gfp_t); +-void *__kmalloc(size_t size, gfp_t flags); ++void *__kmalloc(size_t size, gfp_t flags) __alloc_size(1) __size_overflow(1); + + static __always_inline void * + kmalloc_order(size_t size, gfp_t flags, unsigned int order) +@@ -259,6 +260,7 @@ kmalloc_order_trace(size_t size, gfp_t flags, unsigned int order) + } + #endif + ++static __always_inline void *kmalloc_large(size_t size, gfp_t flags) __size_overflow(1); + static __always_inline void *kmalloc_large(size_t size, gfp_t flags) + { + unsigned int order = get_order(size); +@@ -284,7 +286,7 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags) + } + + #ifdef CONFIG_NUMA +-void *__kmalloc_node(size_t size, gfp_t flags, int node); ++void *__kmalloc_node(size_t size, gfp_t flags, int node) __size_overflow(1); + void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node); + + #ifdef CONFIG_TRACING +diff --git a/include/linux/sonet.h b/include/linux/sonet.h +index de8832d..0147b46 100644 +--- a/include/linux/sonet.h ++++ b/include/linux/sonet.h +@@ -61,7 +61,7 @@ struct sonet_stats { + #include <linux/atomic.h> + + struct k_sonet_stats { +-#define __HANDLE_ITEM(i) atomic_t i ++#define __HANDLE_ITEM(i) atomic_unchecked_t i + __SONET_ITEMS + #undef __HANDLE_ITEM + }; +diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h +index 523547e..2cb7140 100644 +--- a/include/linux/sunrpc/clnt.h ++++ b/include/linux/sunrpc/clnt.h +@@ -174,9 +174,9 @@ static inline unsigned short rpc_get_port(const struct sockaddr *sap) + { + switch (sap->sa_family) { + case AF_INET: +- return ntohs(((struct sockaddr_in *)sap)->sin_port); ++ return ntohs(((const struct sockaddr_in *)sap)->sin_port); + case AF_INET6: +- return ntohs(((struct sockaddr_in6 *)sap)->sin6_port); ++ return ntohs(((const struct sockaddr_in6 *)sap)->sin6_port); + } + return 0; + } +@@ -209,7 +209,7 @@ static inline bool __rpc_cmp_addr4(const struct sockaddr *sap1, + static inline bool __rpc_copy_addr4(struct sockaddr *dst, + const struct sockaddr *src) + { +- const struct sockaddr_in *ssin = (struct sockaddr_in *) src; ++ const struct sockaddr_in *ssin = (const struct sockaddr_in *) src; + struct sockaddr_in *dsin = (struct sockaddr_in *) dst; + + dsin->sin_family = ssin->sin_family; +@@ -312,7 +312,7 @@ static inline u32 rpc_get_scope_id(const struct sockaddr *sa) + if (sa->sa_family != AF_INET6) + return 0; + +- return ((struct sockaddr_in6 *) sa)->sin6_scope_id; ++ return ((const struct sockaddr_in6 *) sa)->sin6_scope_id; + } + + #endif /* __KERNEL__ */ +diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h +index dc0c3cc..8503fb6 100644 +--- a/include/linux/sunrpc/sched.h ++++ b/include/linux/sunrpc/sched.h +@@ -106,6 +106,7 @@ struct rpc_call_ops { + void (*rpc_count_stats)(struct rpc_task *, void *); + void (*rpc_release)(void *); + }; ++typedef struct rpc_call_ops __no_const rpc_call_ops_no_const; + + struct rpc_task_setup { + struct rpc_task *task; +diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h +index 0b8e3e6..33e0a01 100644 +--- a/include/linux/sunrpc/svc_rdma.h ++++ b/include/linux/sunrpc/svc_rdma.h +@@ -53,15 +53,15 @@ extern unsigned int svcrdma_ord; + extern unsigned int svcrdma_max_requests; + extern unsigned int svcrdma_max_req_size; + +-extern atomic_t rdma_stat_recv; +-extern atomic_t rdma_stat_read; +-extern atomic_t rdma_stat_write; +-extern atomic_t rdma_stat_sq_starve; +-extern atomic_t rdma_stat_rq_starve; +-extern atomic_t rdma_stat_rq_poll; +-extern atomic_t rdma_stat_rq_prod; +-extern atomic_t rdma_stat_sq_poll; +-extern atomic_t rdma_stat_sq_prod; ++extern atomic_unchecked_t rdma_stat_recv; ++extern atomic_unchecked_t rdma_stat_read; ++extern atomic_unchecked_t rdma_stat_write; ++extern atomic_unchecked_t rdma_stat_sq_starve; ++extern atomic_unchecked_t rdma_stat_rq_starve; ++extern atomic_unchecked_t rdma_stat_rq_poll; ++extern atomic_unchecked_t rdma_stat_rq_prod; ++extern atomic_unchecked_t rdma_stat_sq_poll; ++extern atomic_unchecked_t rdma_stat_sq_prod; + + #define RPCRDMA_VERSION 1 + +diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h +index c34b4c8..a65b67d 100644 +--- a/include/linux/sysctl.h ++++ b/include/linux/sysctl.h +@@ -155,7 +155,11 @@ enum + KERN_PANIC_ON_NMI=76, /* int: whether we will panic on an unrecovered */ + }; + +- ++#ifdef CONFIG_PAX_SOFTMODE ++enum { ++ PAX_SOFTMODE=1 /* PaX: disable/enable soft mode */ ++}; ++#endif + + /* CTL_VM names: */ + enum +@@ -948,6 +952,8 @@ typedef int proc_handler (struct ctl_table *ctl, int write, + + extern int proc_dostring(struct ctl_table *, int, + void __user *, size_t *, loff_t *); ++extern int proc_dostring_modpriv(struct ctl_table *, int, ++ void __user *, size_t *, loff_t *); + extern int proc_dointvec(struct ctl_table *, int, + void __user *, size_t *, loff_t *); + extern int proc_dointvec_minmax(struct ctl_table *, int, +diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h +index ff7dc08..893e1bd 100644 +--- a/include/linux/tty_ldisc.h ++++ b/include/linux/tty_ldisc.h +@@ -148,7 +148,7 @@ struct tty_ldisc_ops { + + struct module *owner; + +- int refcount; ++ atomic_t refcount; + }; + + struct tty_ldisc { +diff --git a/include/linux/types.h b/include/linux/types.h +index 7f480db..175c256 100644 +--- a/include/linux/types.h ++++ b/include/linux/types.h +@@ -220,10 +220,26 @@ typedef struct { + int counter; + } atomic_t; + ++#ifdef CONFIG_PAX_REFCOUNT ++typedef struct { ++ int counter; ++} atomic_unchecked_t; ++#else ++typedef atomic_t atomic_unchecked_t; ++#endif ++ + #ifdef CONFIG_64BIT + typedef struct { + long counter; + } atomic64_t; ++ ++#ifdef CONFIG_PAX_REFCOUNT ++typedef struct { ++ long counter; ++} atomic64_unchecked_t; ++#else ++typedef atomic64_t atomic64_unchecked_t; ++#endif + #endif + + struct list_head { +diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h +index 5ca0951..ab496a5 100644 +--- a/include/linux/uaccess.h ++++ b/include/linux/uaccess.h +@@ -76,11 +76,11 @@ static inline unsigned long __copy_from_user_nocache(void *to, + long ret; \ + mm_segment_t old_fs = get_fs(); \ + \ +- set_fs(KERNEL_DS); \ + pagefault_disable(); \ +- ret = __copy_from_user_inatomic(&(retval), (__force typeof(retval) __user *)(addr), sizeof(retval)); \ +- pagefault_enable(); \ ++ set_fs(KERNEL_DS); \ ++ ret = __copy_from_user_inatomic(&(retval), (typeof(retval) __force_user *)(addr), sizeof(retval)); \ + set_fs(old_fs); \ ++ pagefault_enable(); \ + ret; \ + }) + +diff --git a/include/linux/unaligned/access_ok.h b/include/linux/unaligned/access_ok.h +index 99c1b4d..bb94261 100644 +--- a/include/linux/unaligned/access_ok.h ++++ b/include/linux/unaligned/access_ok.h +@@ -6,32 +6,32 @@ + + static inline u16 get_unaligned_le16(const void *p) + { +- return le16_to_cpup((__le16 *)p); ++ return le16_to_cpup((const __le16 *)p); + } + + static inline u32 get_unaligned_le32(const void *p) + { +- return le32_to_cpup((__le32 *)p); ++ return le32_to_cpup((const __le32 *)p); + } + + static inline u64 get_unaligned_le64(const void *p) + { +- return le64_to_cpup((__le64 *)p); ++ return le64_to_cpup((const __le64 *)p); + } + + static inline u16 get_unaligned_be16(const void *p) + { +- return be16_to_cpup((__be16 *)p); ++ return be16_to_cpup((const __be16 *)p); + } + + static inline u32 get_unaligned_be32(const void *p) + { +- return be32_to_cpup((__be32 *)p); ++ return be32_to_cpup((const __be32 *)p); + } + + static inline u64 get_unaligned_be64(const void *p) + { +- return be64_to_cpup((__be64 *)p); ++ return be64_to_cpup((const __be64 *)p); + } + + static inline void put_unaligned_le16(u16 val, void *p) +diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h +index 547e59c..db6ad19 100644 +--- a/include/linux/usb/renesas_usbhs.h ++++ b/include/linux/usb/renesas_usbhs.h +@@ -39,7 +39,7 @@ enum { + */ + struct renesas_usbhs_driver_callback { + int (*notify_hotplug)(struct platform_device *pdev); +-}; ++} __no_const; + + /* + * callback functions for platform +@@ -97,7 +97,7 @@ struct renesas_usbhs_platform_callback { + * VBUS control is needed for Host + */ + int (*set_vbus)(struct platform_device *pdev, int enable); +-}; ++} __no_const; + + /* + * parameters for renesas usbhs +diff --git a/include/linux/vermagic.h b/include/linux/vermagic.h +index 6f8fbcf..8259001 100644 +--- a/include/linux/vermagic.h ++++ b/include/linux/vermagic.h +@@ -25,9 +25,35 @@ + #define MODULE_ARCH_VERMAGIC "" + #endif + ++#ifdef CONFIG_PAX_REFCOUNT ++#define MODULE_PAX_REFCOUNT "REFCOUNT " ++#else ++#define MODULE_PAX_REFCOUNT "" ++#endif ++ ++#ifdef CONSTIFY_PLUGIN ++#define MODULE_CONSTIFY_PLUGIN "CONSTIFY_PLUGIN " ++#else ++#define MODULE_CONSTIFY_PLUGIN "" ++#endif ++ ++#ifdef STACKLEAK_PLUGIN ++#define MODULE_STACKLEAK_PLUGIN "STACKLEAK_PLUGIN " ++#else ++#define MODULE_STACKLEAK_PLUGIN "" ++#endif ++ ++#ifdef CONFIG_GRKERNSEC ++#define MODULE_GRSEC "GRSEC " ++#else ++#define MODULE_GRSEC "" ++#endif ++ + #define VERMAGIC_STRING \ + UTS_RELEASE " " \ + MODULE_VERMAGIC_SMP MODULE_VERMAGIC_PREEMPT \ + MODULE_VERMAGIC_MODULE_UNLOAD MODULE_VERMAGIC_MODVERSIONS \ +- MODULE_ARCH_VERMAGIC ++ MODULE_ARCH_VERMAGIC \ ++ MODULE_PAX_REFCOUNT MODULE_CONSTIFY_PLUGIN MODULE_STACKLEAK_PLUGIN \ ++ MODULE_GRSEC + +diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h +index dcdfc2b..ec79ab5 100644 +--- a/include/linux/vmalloc.h ++++ b/include/linux/vmalloc.h +@@ -14,6 +14,11 @@ struct vm_area_struct; /* vma defining user mapping in mm_types.h */ + #define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */ + #define VM_VPAGES 0x00000010 /* buffer for pages was vmalloc'ed */ + #define VM_UNLIST 0x00000020 /* vm_struct is not listed in vmlist */ ++ ++#if defined(CONFIG_MODULES) && defined(CONFIG_X86) && defined(CONFIG_PAX_KERNEXEC) ++#define VM_KERNEXEC 0x00000040 /* allocate from executable kernel memory range */ ++#endif ++ + /* bits [20..32] reserved for arch specific ioremap internals */ + + /* +@@ -62,7 +67,7 @@ extern void *vmalloc_32_user(unsigned long size); + extern void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot); + extern void *__vmalloc_node_range(unsigned long size, unsigned long align, + unsigned long start, unsigned long end, gfp_t gfp_mask, +- pgprot_t prot, int node, void *caller); ++ pgprot_t prot, int node, void *caller) __size_overflow(1); + extern void vfree(const void *addr); + + extern void *vmap(struct page **pages, unsigned int count, +@@ -123,8 +128,8 @@ extern struct vm_struct *alloc_vm_area(size_t size, pte_t **ptes); + extern void free_vm_area(struct vm_struct *area); + + /* for /dev/kmem */ +-extern long vread(char *buf, char *addr, unsigned long count); +-extern long vwrite(char *buf, char *addr, unsigned long count); ++extern long vread(char *buf, char *addr, unsigned long count) __size_overflow(3); ++extern long vwrite(char *buf, char *addr, unsigned long count) __size_overflow(3); + + /* + * Internals. Dont't use.. +diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h +index 65efb92..137adbb 100644 +--- a/include/linux/vmstat.h ++++ b/include/linux/vmstat.h +@@ -87,18 +87,18 @@ static inline void vm_events_fold_cpu(int cpu) + /* + * Zone based page accounting with per cpu differentials. + */ +-extern atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS]; ++extern atomic_long_unchecked_t vm_stat[NR_VM_ZONE_STAT_ITEMS]; + + static inline void zone_page_state_add(long x, struct zone *zone, + enum zone_stat_item item) + { +- atomic_long_add(x, &zone->vm_stat[item]); +- atomic_long_add(x, &vm_stat[item]); ++ atomic_long_add_unchecked(x, &zone->vm_stat[item]); ++ atomic_long_add_unchecked(x, &vm_stat[item]); + } + + static inline unsigned long global_page_state(enum zone_stat_item item) + { +- long x = atomic_long_read(&vm_stat[item]); ++ long x = atomic_long_read_unchecked(&vm_stat[item]); + #ifdef CONFIG_SMP + if (x < 0) + x = 0; +@@ -109,7 +109,7 @@ static inline unsigned long global_page_state(enum zone_stat_item item) + static inline unsigned long zone_page_state(struct zone *zone, + enum zone_stat_item item) + { +- long x = atomic_long_read(&zone->vm_stat[item]); ++ long x = atomic_long_read_unchecked(&zone->vm_stat[item]); + #ifdef CONFIG_SMP + if (x < 0) + x = 0; +@@ -126,7 +126,7 @@ static inline unsigned long zone_page_state(struct zone *zone, + static inline unsigned long zone_page_state_snapshot(struct zone *zone, + enum zone_stat_item item) + { +- long x = atomic_long_read(&zone->vm_stat[item]); ++ long x = atomic_long_read_unchecked(&zone->vm_stat[item]); + + #ifdef CONFIG_SMP + int cpu; +@@ -221,8 +221,8 @@ static inline void __mod_zone_page_state(struct zone *zone, + + static inline void __inc_zone_state(struct zone *zone, enum zone_stat_item item) + { +- atomic_long_inc(&zone->vm_stat[item]); +- atomic_long_inc(&vm_stat[item]); ++ atomic_long_inc_unchecked(&zone->vm_stat[item]); ++ atomic_long_inc_unchecked(&vm_stat[item]); + } + + static inline void __inc_zone_page_state(struct page *page, +@@ -233,8 +233,8 @@ static inline void __inc_zone_page_state(struct page *page, + + static inline void __dec_zone_state(struct zone *zone, enum zone_stat_item item) + { +- atomic_long_dec(&zone->vm_stat[item]); +- atomic_long_dec(&vm_stat[item]); ++ atomic_long_dec_unchecked(&zone->vm_stat[item]); ++ atomic_long_dec_unchecked(&vm_stat[item]); + } + + static inline void __dec_zone_page_state(struct page *page, +diff --git a/include/linux/xattr.h b/include/linux/xattr.h +index e5d1220..ef6e406 100644 +--- a/include/linux/xattr.h ++++ b/include/linux/xattr.h +@@ -57,6 +57,11 @@ + #define XATTR_POSIX_ACL_DEFAULT "posix_acl_default" + #define XATTR_NAME_POSIX_ACL_DEFAULT XATTR_SYSTEM_PREFIX XATTR_POSIX_ACL_DEFAULT + ++/* User namespace */ ++#define XATTR_PAX_PREFIX XATTR_USER_PREFIX "pax." ++#define XATTR_PAX_FLAGS_SUFFIX "flags" ++#define XATTR_NAME_PAX_FLAGS XATTR_PAX_PREFIX XATTR_PAX_FLAGS_SUFFIX ++ + #ifdef __KERNEL__ + + #include <linux/types.h> +diff --git a/include/media/saa7146_vv.h b/include/media/saa7146_vv.h +index 4aeff96..b378cdc 100644 +--- a/include/media/saa7146_vv.h ++++ b/include/media/saa7146_vv.h +@@ -163,7 +163,7 @@ struct saa7146_ext_vv + int (*std_callback)(struct saa7146_dev*, struct saa7146_standard *); + + /* the extension can override this */ +- struct v4l2_ioctl_ops ops; ++ v4l2_ioctl_ops_no_const ops; + /* pointer to the saa7146 core ops */ + const struct v4l2_ioctl_ops *core_ops; + +diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h +index 96d2221..2292f89 100644 +--- a/include/media/v4l2-dev.h ++++ b/include/media/v4l2-dev.h +@@ -56,7 +56,7 @@ int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority local); + + + struct v4l2_file_operations { +- struct module *owner; ++ struct module * const owner; + ssize_t (*read) (struct file *, char __user *, size_t, loff_t *); + ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *); + unsigned int (*poll) (struct file *, struct poll_table_struct *); +@@ -71,6 +71,7 @@ struct v4l2_file_operations { + int (*open) (struct file *); + int (*release) (struct file *); + }; ++typedef struct v4l2_file_operations __no_const v4l2_file_operations_no_const; + + /* + * Newer version of video_device, handled by videodev2.c +diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h +index 3cb939c..f23c6bb 100644 +--- a/include/media/v4l2-ioctl.h ++++ b/include/media/v4l2-ioctl.h +@@ -281,7 +281,7 @@ struct v4l2_ioctl_ops { + long (*vidioc_default) (struct file *file, void *fh, + bool valid_prio, int cmd, void *arg); + }; +- ++typedef struct v4l2_ioctl_ops __no_const v4l2_ioctl_ops_no_const; + + /* v4l debugging and diagnostics */ + +diff --git a/include/net/caif/caif_hsi.h b/include/net/caif/caif_hsi.h +index 6db8ecf..8c23861 100644 +--- a/include/net/caif/caif_hsi.h ++++ b/include/net/caif/caif_hsi.h +@@ -98,7 +98,7 @@ struct cfhsi_drv { + void (*rx_done_cb) (struct cfhsi_drv *drv); + void (*wake_up_cb) (struct cfhsi_drv *drv); + void (*wake_down_cb) (struct cfhsi_drv *drv); +-}; ++} __no_const; + + /* Structure implemented by HSI device. */ + struct cfhsi_dev { +diff --git a/include/net/caif/cfctrl.h b/include/net/caif/cfctrl.h +index 9e5425b..8136ffc 100644 +--- a/include/net/caif/cfctrl.h ++++ b/include/net/caif/cfctrl.h +@@ -52,7 +52,7 @@ struct cfctrl_rsp { + void (*radioset_rsp)(void); + void (*reject_rsp)(struct cflayer *layer, u8 linkid, + struct cflayer *client_layer); +-}; ++} __no_const; + + /* Link Setup Parameters for CAIF-Links. */ + struct cfctrl_link_param { +@@ -101,8 +101,8 @@ struct cfctrl_request_info { + struct cfctrl { + struct cfsrvl serv; + struct cfctrl_rsp res; +- atomic_t req_seq_no; +- atomic_t rsp_seq_no; ++ atomic_unchecked_t req_seq_no; ++ atomic_unchecked_t rsp_seq_no; + struct list_head list; + /* Protects from simultaneous access to first_req list */ + spinlock_t info_list_lock; +diff --git a/include/net/flow.h b/include/net/flow.h +index 6c469db..7743b8e 100644 +--- a/include/net/flow.h ++++ b/include/net/flow.h +@@ -221,6 +221,6 @@ extern struct flow_cache_object *flow_cache_lookup( + + extern void flow_cache_flush(void); + extern void flow_cache_flush_deferred(void); +-extern atomic_t flow_cache_genid; ++extern atomic_unchecked_t flow_cache_genid; + + #endif +diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h +index 2040bff..f4c0733 100644 +--- a/include/net/inetpeer.h ++++ b/include/net/inetpeer.h +@@ -51,8 +51,8 @@ struct inet_peer { + */ + union { + struct { +- atomic_t rid; /* Frag reception counter */ +- atomic_t ip_id_count; /* IP ID for the next packet */ ++ atomic_unchecked_t rid; /* Frag reception counter */ ++ atomic_unchecked_t ip_id_count; /* IP ID for the next packet */ + __u32 tcp_ts; + __u32 tcp_ts_stamp; + }; +@@ -118,11 +118,11 @@ static inline int inet_getid(struct inet_peer *p, int more) + more++; + inet_peer_refcheck(p); + do { +- old = atomic_read(&p->ip_id_count); ++ old = atomic_read_unchecked(&p->ip_id_count); + new = old + more; + if (!new) + new = 1; +- } while (atomic_cmpxchg(&p->ip_id_count, old, new) != old); ++ } while (atomic_cmpxchg_unchecked(&p->ip_id_count, old, new) != old); + return new; + } + +diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h +index 10422ef..662570f 100644 +--- a/include/net/ip_fib.h ++++ b/include/net/ip_fib.h +@@ -146,7 +146,7 @@ extern __be32 fib_info_update_nh_saddr(struct net *net, struct fib_nh *nh); + + #define FIB_RES_SADDR(net, res) \ + ((FIB_RES_NH(res).nh_saddr_genid == \ +- atomic_read(&(net)->ipv4.dev_addr_genid)) ? \ ++ atomic_read_unchecked(&(net)->ipv4.dev_addr_genid)) ? \ + FIB_RES_NH(res).nh_saddr : \ + fib_info_update_nh_saddr((net), &FIB_RES_NH(res))) + #define FIB_RES_GW(res) (FIB_RES_NH(res).nh_gw) +diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h +index 72522f0..6f03a2b 100644 +--- a/include/net/ip_vs.h ++++ b/include/net/ip_vs.h +@@ -510,7 +510,7 @@ struct ip_vs_conn { + struct ip_vs_conn *control; /* Master control connection */ + atomic_t n_control; /* Number of controlled ones */ + struct ip_vs_dest *dest; /* real server */ +- atomic_t in_pkts; /* incoming packet counter */ ++ atomic_unchecked_t in_pkts; /* incoming packet counter */ + + /* packet transmitter for different forwarding methods. If it + mangles the packet, it must return NF_DROP or better NF_STOLEN, +@@ -648,7 +648,7 @@ struct ip_vs_dest { + __be16 port; /* port number of the server */ + union nf_inet_addr addr; /* IP address of the server */ + volatile unsigned flags; /* dest status flags */ +- atomic_t conn_flags; /* flags to copy to conn */ ++ atomic_unchecked_t conn_flags; /* flags to copy to conn */ + atomic_t weight; /* server weight */ + + atomic_t refcnt; /* reference counter */ +diff --git a/include/net/irda/ircomm_core.h b/include/net/irda/ircomm_core.h +index 69b610a..fe3962c 100644 +--- a/include/net/irda/ircomm_core.h ++++ b/include/net/irda/ircomm_core.h +@@ -51,7 +51,7 @@ typedef struct { + int (*connect_response)(struct ircomm_cb *, struct sk_buff *); + int (*disconnect_request)(struct ircomm_cb *, struct sk_buff *, + struct ircomm_info *); +-} call_t; ++} __no_const call_t; + + struct ircomm_cb { + irda_queue_t queue; +diff --git a/include/net/irda/ircomm_tty.h b/include/net/irda/ircomm_tty.h +index 59ba38bc..d515662 100644 +--- a/include/net/irda/ircomm_tty.h ++++ b/include/net/irda/ircomm_tty.h +@@ -35,6 +35,7 @@ + #include <linux/termios.h> + #include <linux/timer.h> + #include <linux/tty.h> /* struct tty_struct */ ++#include <asm/local.h> + + #include <net/irda/irias_object.h> + #include <net/irda/ircomm_core.h> +@@ -105,8 +106,8 @@ struct ircomm_tty_cb { + unsigned short close_delay; + unsigned short closing_wait; /* time to wait before closing */ + +- int open_count; +- int blocked_open; /* # of blocked opens */ ++ local_t open_count; ++ local_t blocked_open; /* # of blocked opens */ + + /* Protect concurent access to : + * o self->open_count +diff --git a/include/net/iucv/af_iucv.h b/include/net/iucv/af_iucv.h +index cc7c197..9f2da2a 100644 +--- a/include/net/iucv/af_iucv.h ++++ b/include/net/iucv/af_iucv.h +@@ -141,7 +141,7 @@ struct iucv_sock { + struct iucv_sock_list { + struct hlist_head head; + rwlock_t lock; +- atomic_t autobind_name; ++ atomic_unchecked_t autobind_name; + }; + + unsigned int iucv_sock_poll(struct file *file, struct socket *sock, +diff --git a/include/net/neighbour.h b/include/net/neighbour.h +index 34c996f..bb3b4d4 100644 +--- a/include/net/neighbour.h ++++ b/include/net/neighbour.h +@@ -123,7 +123,7 @@ struct neigh_ops { + void (*error_report)(struct neighbour *, struct sk_buff *); + int (*output)(struct neighbour *, struct sk_buff *); + int (*connected_output)(struct neighbour *, struct sk_buff *); +-}; ++} __do_const; + + struct pneigh_entry { + struct pneigh_entry *next; +diff --git a/include/net/netlink.h b/include/net/netlink.h +index f394fe5..fd073f9 100644 +--- a/include/net/netlink.h ++++ b/include/net/netlink.h +@@ -534,7 +534,7 @@ static inline void *nlmsg_get_pos(struct sk_buff *skb) + static inline void nlmsg_trim(struct sk_buff *skb, const void *mark) + { + if (mark) +- skb_trim(skb, (unsigned char *) mark - skb->data); ++ skb_trim(skb, (const unsigned char *) mark - skb->data); + } + + /** +diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h +index bbd023a..97c6d0d 100644 +--- a/include/net/netns/ipv4.h ++++ b/include/net/netns/ipv4.h +@@ -57,8 +57,8 @@ struct netns_ipv4 { + unsigned int sysctl_ping_group_range[2]; + long sysctl_tcp_mem[3]; + +- atomic_t rt_genid; +- atomic_t dev_addr_genid; ++ atomic_unchecked_t rt_genid; ++ atomic_unchecked_t dev_addr_genid; + + #ifdef CONFIG_IP_MROUTE + #ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES +diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h +index a2ef814..31a8e3f 100644 +--- a/include/net/sctp/sctp.h ++++ b/include/net/sctp/sctp.h +@@ -318,9 +318,9 @@ do { \ + + #else /* SCTP_DEBUG */ + +-#define SCTP_DEBUG_PRINTK(whatever...) +-#define SCTP_DEBUG_PRINTK_CONT(fmt, args...) +-#define SCTP_DEBUG_PRINTK_IPADDR(whatever...) ++#define SCTP_DEBUG_PRINTK(whatever...) do {} while (0) ++#define SCTP_DEBUG_PRINTK_CONT(fmt, args...) do {} while (0) ++#define SCTP_DEBUG_PRINTK_IPADDR(whatever...) do {} while (0) + #define SCTP_ENABLE_DEBUG + #define SCTP_DISABLE_DEBUG + #define SCTP_ASSERT(expr, str, func) +diff --git a/include/net/sock.h b/include/net/sock.h +index 5a0a58a..2e3d4d0 100644 +--- a/include/net/sock.h ++++ b/include/net/sock.h +@@ -302,7 +302,7 @@ struct sock { + #ifdef CONFIG_RPS + __u32 sk_rxhash; + #endif +- atomic_t sk_drops; ++ atomic_unchecked_t sk_drops; + int sk_rcvbuf; + + struct sk_filter __rcu *sk_filter; +@@ -1691,7 +1691,7 @@ static inline void sk_nocaps_add(struct sock *sk, netdev_features_t flags) + } + + static inline int skb_do_copy_data_nocache(struct sock *sk, struct sk_buff *skb, +- char __user *from, char *to, ++ char __user *from, unsigned char *to, + int copy, int offset) + { + if (skb->ip_summed == CHECKSUM_NONE) { +diff --git a/include/net/tcp.h b/include/net/tcp.h +index f75a04d..702cf06 100644 +--- a/include/net/tcp.h ++++ b/include/net/tcp.h +@@ -1425,7 +1425,7 @@ struct tcp_seq_afinfo { + char *name; + sa_family_t family; + const struct file_operations *seq_fops; +- struct seq_operations seq_ops; ++ seq_operations_no_const seq_ops; + }; + + struct tcp_iter_state { +diff --git a/include/net/udp.h b/include/net/udp.h +index 5d606d9..e879f7b 100644 +--- a/include/net/udp.h ++++ b/include/net/udp.h +@@ -244,7 +244,7 @@ struct udp_seq_afinfo { + sa_family_t family; + struct udp_table *udp_table; + const struct file_operations *seq_fops; +- struct seq_operations seq_ops; ++ seq_operations_no_const seq_ops; + }; + + struct udp_iter_state { +diff --git a/include/net/xfrm.h b/include/net/xfrm.h +index 96239e7..c85b032 100644 +--- a/include/net/xfrm.h ++++ b/include/net/xfrm.h +@@ -505,7 +505,7 @@ struct xfrm_policy { + struct timer_list timer; + + struct flow_cache_object flo; +- atomic_t genid; ++ atomic_unchecked_t genid; + u32 priority; + u32 index; + struct xfrm_mark mark; +diff --git a/include/rdma/iw_cm.h b/include/rdma/iw_cm.h +index 1a046b1..ee0bef0 100644 +--- a/include/rdma/iw_cm.h ++++ b/include/rdma/iw_cm.h +@@ -122,7 +122,7 @@ struct iw_cm_verbs { + int backlog); + + int (*destroy_listen)(struct iw_cm_id *cm_id); +-}; ++} __no_const; + + /** + * iw_create_cm_id - Create an IW CM identifier. +diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h +index 8f9dfba..610ab6c 100644 +--- a/include/scsi/libfc.h ++++ b/include/scsi/libfc.h +@@ -756,6 +756,7 @@ struct libfc_function_template { + */ + void (*disc_stop_final) (struct fc_lport *); + }; ++typedef struct libfc_function_template __no_const libfc_function_template_no_const; + + /** + * struct fc_disc - Discovery context +@@ -861,7 +862,7 @@ struct fc_lport { + struct fc_vport *vport; + + /* Operational Information */ +- struct libfc_function_template tt; ++ libfc_function_template_no_const tt; + u8 link_up; + u8 qfull; + enum fc_lport_state state; +diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h +index ba96988..ecf2eb9 100644 +--- a/include/scsi/scsi_device.h ++++ b/include/scsi/scsi_device.h +@@ -163,9 +163,9 @@ struct scsi_device { + unsigned int max_device_blocked; /* what device_blocked counts down from */ + #define SCSI_DEFAULT_DEVICE_BLOCKED 3 + +- atomic_t iorequest_cnt; +- atomic_t iodone_cnt; +- atomic_t ioerr_cnt; ++ atomic_unchecked_t iorequest_cnt; ++ atomic_unchecked_t iodone_cnt; ++ atomic_unchecked_t ioerr_cnt; + + struct device sdev_gendev, + sdev_dev; +diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h +index 719faf1..d1154d4 100644 +--- a/include/scsi/scsi_transport_fc.h ++++ b/include/scsi/scsi_transport_fc.h +@@ -739,7 +739,7 @@ struct fc_function_template { + unsigned long show_host_system_hostname:1; + + unsigned long disable_target_scan:1; +-}; ++} __do_const; + + + /** +diff --git a/include/sound/ak4xxx-adda.h b/include/sound/ak4xxx-adda.h +index 030b87c..98a6954 100644 +--- a/include/sound/ak4xxx-adda.h ++++ b/include/sound/ak4xxx-adda.h +@@ -35,7 +35,7 @@ struct snd_ak4xxx_ops { + void (*write)(struct snd_akm4xxx *ak, int chip, unsigned char reg, + unsigned char val); + void (*set_rate_val)(struct snd_akm4xxx *ak, unsigned int rate); +-}; ++} __no_const; + + #define AK4XXX_IMAGE_SIZE (AK4XXX_MAX_CHIPS * 16) /* 64 bytes */ + +diff --git a/include/sound/hwdep.h b/include/sound/hwdep.h +index 8c05e47..2b5df97 100644 +--- a/include/sound/hwdep.h ++++ b/include/sound/hwdep.h +@@ -49,7 +49,7 @@ struct snd_hwdep_ops { + struct snd_hwdep_dsp_status *status); + int (*dsp_load)(struct snd_hwdep *hw, + struct snd_hwdep_dsp_image *image); +-}; ++} __no_const; + + struct snd_hwdep { + struct snd_card *card; +diff --git a/include/sound/info.h b/include/sound/info.h +index 9ca1a49..aba1728 100644 +--- a/include/sound/info.h ++++ b/include/sound/info.h +@@ -44,7 +44,7 @@ struct snd_info_entry_text { + struct snd_info_buffer *buffer); + void (*write)(struct snd_info_entry *entry, + struct snd_info_buffer *buffer); +-}; ++} __no_const; + + struct snd_info_entry_ops { + int (*open)(struct snd_info_entry *entry, +diff --git a/include/sound/pcm.h b/include/sound/pcm.h +index 0d11128..814178e 100644 +--- a/include/sound/pcm.h ++++ b/include/sound/pcm.h +@@ -81,6 +81,7 @@ struct snd_pcm_ops { + int (*mmap)(struct snd_pcm_substream *substream, struct vm_area_struct *vma); + int (*ack)(struct snd_pcm_substream *substream); + }; ++typedef struct snd_pcm_ops __no_const snd_pcm_ops_no_const; + + /* + * +diff --git a/include/sound/sb16_csp.h b/include/sound/sb16_csp.h +index af1b49e..a5d55a5 100644 +--- a/include/sound/sb16_csp.h ++++ b/include/sound/sb16_csp.h +@@ -146,7 +146,7 @@ struct snd_sb_csp_ops { + int (*csp_start) (struct snd_sb_csp * p, int sample_width, int channels); + int (*csp_stop) (struct snd_sb_csp * p); + int (*csp_qsound_transfer) (struct snd_sb_csp * p); +-}; ++} __no_const; + + /* + * CSP private data +diff --git a/include/sound/soc.h b/include/sound/soc.h +index 2ebf787..0276839 100644 +--- a/include/sound/soc.h ++++ b/include/sound/soc.h +@@ -711,7 +711,7 @@ struct snd_soc_platform_driver { + /* platform IO - used for platform DAPM */ + unsigned int (*read)(struct snd_soc_platform *, unsigned int); + int (*write)(struct snd_soc_platform *, unsigned int, unsigned int); +-}; ++} __do_const; + + struct snd_soc_platform { + const char *name; +@@ -887,7 +887,7 @@ struct snd_soc_pcm_runtime { + struct snd_soc_dai_link *dai_link; + struct mutex pcm_mutex; + enum snd_soc_pcm_subclass pcm_subclass; +- struct snd_pcm_ops ops; ++ snd_pcm_ops_no_const ops; + + unsigned int complete:1; + unsigned int dev_registered:1; +diff --git a/include/sound/ymfpci.h b/include/sound/ymfpci.h +index 4119966..1a4671c 100644 +--- a/include/sound/ymfpci.h ++++ b/include/sound/ymfpci.h +@@ -358,7 +358,7 @@ struct snd_ymfpci { + spinlock_t reg_lock; + spinlock_t voice_lock; + wait_queue_head_t interrupt_sleep; +- atomic_t interrupt_sleep_count; ++ atomic_unchecked_t interrupt_sleep_count; + struct snd_info_entry *proc_entry; + const struct firmware *dsp_microcode; + const struct firmware *controller_microcode; +diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h +index aaccc5f..092d568 100644 +--- a/include/target/target_core_base.h ++++ b/include/target/target_core_base.h +@@ -447,7 +447,7 @@ struct t10_reservation_ops { + int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32); + int (*t10_pr_register)(struct se_cmd *); + int (*t10_pr_clear)(struct se_cmd *); +-}; ++} __no_const; + + struct t10_reservation { + /* Reservation effects all target ports */ +@@ -576,7 +576,7 @@ struct se_cmd { + atomic_t t_se_count; + atomic_t t_task_cdbs_left; + atomic_t t_task_cdbs_ex_left; +- atomic_t t_task_cdbs_sent; ++ atomic_unchecked_t t_task_cdbs_sent; + unsigned int transport_state; + #define CMD_T_ABORTED (1 << 0) + #define CMD_T_ACTIVE (1 << 1) +@@ -802,7 +802,7 @@ struct se_device { + spinlock_t stats_lock; + /* Active commands on this virtual SE device */ + atomic_t simple_cmds; +- atomic_t dev_ordered_id; ++ atomic_unchecked_t dev_ordered_id; + atomic_t execute_tasks; + atomic_t dev_ordered_sync; + atomic_t dev_qf_count; +diff --git a/include/trace/events/fs.h b/include/trace/events/fs.h +new file mode 100644 +index 0000000..2efe49d +--- /dev/null ++++ b/include/trace/events/fs.h +@@ -0,0 +1,53 @@ ++#undef TRACE_SYSTEM ++#define TRACE_SYSTEM fs ++ ++#if !defined(_TRACE_FS_H) || defined(TRACE_HEADER_MULTI_READ) ++#define _TRACE_FS_H ++ ++#include <linux/fs.h> ++#include <linux/tracepoint.h> ++ ++TRACE_EVENT(do_sys_open, ++ ++ TP_PROTO(char *filename, int flags, int mode), ++ ++ TP_ARGS(filename, flags, mode), ++ ++ TP_STRUCT__entry( ++ __string( filename, filename ) ++ __field( int, flags ) ++ __field( int, mode ) ++ ), ++ ++ TP_fast_assign( ++ __assign_str(filename, filename); ++ __entry->flags = flags; ++ __entry->mode = mode; ++ ), ++ ++ TP_printk("\"%s\" %x %o", ++ __get_str(filename), __entry->flags, __entry->mode) ++); ++ ++TRACE_EVENT(open_exec, ++ ++ TP_PROTO(const char *filename), ++ ++ TP_ARGS(filename), ++ ++ TP_STRUCT__entry( ++ __string( filename, filename ) ++ ), ++ ++ TP_fast_assign( ++ __assign_str(filename, filename); ++ ), ++ ++ TP_printk("\"%s\"", ++ __get_str(filename)) ++); ++ ++#endif /* _TRACE_FS_H */ ++ ++/* This part must be outside protection */ ++#include <trace/define_trace.h> +diff --git a/include/trace/events/irq.h b/include/trace/events/irq.h +index 1c09820..7f5ec79 100644 +--- a/include/trace/events/irq.h ++++ b/include/trace/events/irq.h +@@ -36,7 +36,7 @@ struct softirq_action; + */ + TRACE_EVENT(irq_handler_entry, + +- TP_PROTO(int irq, struct irqaction *action), ++ TP_PROTO(int irq, const struct irqaction *action), + + TP_ARGS(irq, action), + +@@ -66,7 +66,7 @@ TRACE_EVENT(irq_handler_entry, + */ + TRACE_EVENT(irq_handler_exit, + +- TP_PROTO(int irq, struct irqaction *action, int ret), ++ TP_PROTO(int irq, const struct irqaction *action, int ret), + + TP_ARGS(irq, action, ret), + +diff --git a/include/video/udlfb.h b/include/video/udlfb.h +index f9466fa..f4e2b81 100644 +--- a/include/video/udlfb.h ++++ b/include/video/udlfb.h +@@ -53,10 +53,10 @@ struct dlfb_data { + u32 pseudo_palette[256]; + int blank_mode; /*one of FB_BLANK_ */ + /* blit-only rendering path metrics, exposed through sysfs */ +- atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */ +- atomic_t bytes_identical; /* saved effort with backbuffer comparison */ +- atomic_t bytes_sent; /* to usb, after compression including overhead */ +- atomic_t cpu_kcycles_used; /* transpired during pixel processing */ ++ atomic_unchecked_t bytes_rendered; /* raw pixel-bytes driver asked to render */ ++ atomic_unchecked_t bytes_identical; /* saved effort with backbuffer comparison */ ++ atomic_unchecked_t bytes_sent; /* to usb, after compression including overhead */ ++ atomic_unchecked_t cpu_kcycles_used; /* transpired during pixel processing */ + }; + + #define NR_USB_REQUEST_I2C_SUB_IO 0x02 +diff --git a/include/video/uvesafb.h b/include/video/uvesafb.h +index 0993a22..32ba2fe 100644 +--- a/include/video/uvesafb.h ++++ b/include/video/uvesafb.h +@@ -177,6 +177,7 @@ struct uvesafb_par { + u8 ypan; /* 0 - nothing, 1 - ypan, 2 - ywrap */ + u8 pmi_setpal; /* PMI for palette changes */ + u16 *pmi_base; /* protected mode interface location */ ++ u8 *pmi_code; /* protected mode code location */ + void *pmi_start; + void *pmi_pal; + u8 *vbe_state_orig; /* +diff --git a/init/Kconfig b/init/Kconfig +index 6cfd71d..16006e6 100644 +--- a/init/Kconfig ++++ b/init/Kconfig +@@ -790,6 +790,7 @@ endif # CGROUPS + + config CHECKPOINT_RESTORE + bool "Checkpoint/restore support" if EXPERT ++ depends on !GRKERNSEC + default n + help + Enables additional kernel features in a sake of checkpoint/restore. +@@ -1240,7 +1241,7 @@ config SLUB_DEBUG + + config COMPAT_BRK + bool "Disable heap randomization" +- default y ++ default n + help + Randomizing heap placement makes heap exploits harder, but it + also breaks ancient binaries (including anything libc5 based). +@@ -1423,7 +1424,7 @@ config INIT_ALL_POSSIBLE + config STOP_MACHINE + bool + default y +- depends on (SMP && MODULE_UNLOAD) || HOTPLUG_CPU ++ depends on (SMP && MODULE_UNLOAD) || HOTPLUG_CPU || GRKERNSEC + help + Need stop_machine() primitive. + +diff --git a/init/do_mounts.c b/init/do_mounts.c +index 42b0707..c06eef4 100644 +--- a/init/do_mounts.c ++++ b/init/do_mounts.c +@@ -326,11 +326,11 @@ static void __init get_fs_names(char *page) + static int __init do_mount_root(char *name, char *fs, int flags, void *data) + { + struct super_block *s; +- int err = sys_mount(name, "/root", fs, flags, data); ++ int err = sys_mount((char __force_user *)name, (char __force_user *)"/root", (char __force_user *)fs, flags, (void __force_user *)data); + if (err) + return err; + +- sys_chdir((const char __user __force *)"/root"); ++ sys_chdir((const char __force_user *)"/root"); + s = current->fs->pwd.dentry->d_sb; + ROOT_DEV = s->s_dev; + printk(KERN_INFO +@@ -450,18 +450,18 @@ void __init change_floppy(char *fmt, ...) + va_start(args, fmt); + vsprintf(buf, fmt, args); + va_end(args); +- fd = sys_open("/dev/root", O_RDWR | O_NDELAY, 0); ++ fd = sys_open((char __user *)"/dev/root", O_RDWR | O_NDELAY, 0); + if (fd >= 0) { + sys_ioctl(fd, FDEJECT, 0); + sys_close(fd); + } + printk(KERN_NOTICE "VFS: Insert %s and press ENTER\n", buf); +- fd = sys_open("/dev/console", O_RDWR, 0); ++ fd = sys_open((__force const char __user *)"/dev/console", O_RDWR, 0); + if (fd >= 0) { + sys_ioctl(fd, TCGETS, (long)&termios); + termios.c_lflag &= ~ICANON; + sys_ioctl(fd, TCSETSF, (long)&termios); +- sys_read(fd, &c, 1); ++ sys_read(fd, (char __user *)&c, 1); + termios.c_lflag |= ICANON; + sys_ioctl(fd, TCSETSF, (long)&termios); + sys_close(fd); +@@ -555,6 +555,6 @@ void __init prepare_namespace(void) + mount_root(); + out: + devtmpfs_mount("dev"); +- sys_mount(".", "/", NULL, MS_MOVE, NULL); +- sys_chroot((const char __user __force *)"."); ++ sys_mount((char __force_user *)".", (char __force_user *)"/", NULL, MS_MOVE, NULL); ++ sys_chroot((const char __force_user *)"."); + } +diff --git a/init/do_mounts.h b/init/do_mounts.h +index f5b978a..69dbfe8 100644 +--- a/init/do_mounts.h ++++ b/init/do_mounts.h +@@ -15,15 +15,15 @@ extern int root_mountflags; + + static inline int create_dev(char *name, dev_t dev) + { +- sys_unlink(name); +- return sys_mknod(name, S_IFBLK|0600, new_encode_dev(dev)); ++ sys_unlink((char __force_user *)name); ++ return sys_mknod((char __force_user *)name, S_IFBLK|0600, new_encode_dev(dev)); + } + + #if BITS_PER_LONG == 32 + static inline u32 bstat(char *name) + { + struct stat64 stat; +- if (sys_stat64(name, &stat) != 0) ++ if (sys_stat64((char __force_user *)name, (struct stat64 __force_user *)&stat) != 0) + return 0; + if (!S_ISBLK(stat.st_mode)) + return 0; +@@ -35,7 +35,7 @@ static inline u32 bstat(char *name) + static inline u32 bstat(char *name) + { + struct stat stat; +- if (sys_newstat(name, &stat) != 0) ++ if (sys_newstat((const char __force_user *)name, (struct stat __force_user *)&stat) != 0) + return 0; + if (!S_ISBLK(stat.st_mode)) + return 0; +diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c +index 9047330..de0d1fb 100644 +--- a/init/do_mounts_initrd.c ++++ b/init/do_mounts_initrd.c +@@ -43,13 +43,13 @@ static void __init handle_initrd(void) + create_dev("/dev/root.old", Root_RAM0); + /* mount initrd on rootfs' /root */ + mount_block_root("/dev/root.old", root_mountflags & ~MS_RDONLY); +- sys_mkdir("/old", 0700); +- root_fd = sys_open("/", 0, 0); +- old_fd = sys_open("/old", 0, 0); ++ sys_mkdir((const char __force_user *)"/old", 0700); ++ root_fd = sys_open((const char __force_user *)"/", 0, 0); ++ old_fd = sys_open((const char __force_user *)"/old", 0, 0); + /* move initrd over / and chdir/chroot in initrd root */ +- sys_chdir("/root"); +- sys_mount(".", "/", NULL, MS_MOVE, NULL); +- sys_chroot("."); ++ sys_chdir((const char __force_user *)"/root"); ++ sys_mount((char __force_user *)".", (char __force_user *)"/", NULL, MS_MOVE, NULL); ++ sys_chroot((const char __force_user *)"."); + + /* + * In case that a resume from disk is carried out by linuxrc or one of +@@ -66,15 +66,15 @@ static void __init handle_initrd(void) + + /* move initrd to rootfs' /old */ + sys_fchdir(old_fd); +- sys_mount("/", ".", NULL, MS_MOVE, NULL); ++ sys_mount((char __force_user *)"/", (char __force_user *)".", NULL, MS_MOVE, NULL); + /* switch root and cwd back to / of rootfs */ + sys_fchdir(root_fd); +- sys_chroot("."); ++ sys_chroot((const char __force_user *)"."); + sys_close(old_fd); + sys_close(root_fd); + + if (new_decode_dev(real_root_dev) == Root_RAM0) { +- sys_chdir("/old"); ++ sys_chdir((const char __force_user *)"/old"); + return; + } + +@@ -82,17 +82,17 @@ static void __init handle_initrd(void) + mount_root(); + + printk(KERN_NOTICE "Trying to move old root to /initrd ... "); +- error = sys_mount("/old", "/root/initrd", NULL, MS_MOVE, NULL); ++ error = sys_mount((char __force_user *)"/old", (char __force_user *)"/root/initrd", NULL, MS_MOVE, NULL); + if (!error) + printk("okay\n"); + else { +- int fd = sys_open("/dev/root.old", O_RDWR, 0); ++ int fd = sys_open((const char __force_user *)"/dev/root.old", O_RDWR, 0); + if (error == -ENOENT) + printk("/initrd does not exist. Ignored.\n"); + else + printk("failed\n"); + printk(KERN_NOTICE "Unmounting old root\n"); +- sys_umount("/old", MNT_DETACH); ++ sys_umount((char __force_user *)"/old", MNT_DETACH); + printk(KERN_NOTICE "Trying to free ramdisk memory ... "); + if (fd < 0) { + error = fd; +@@ -115,11 +115,11 @@ int __init initrd_load(void) + * mounted in the normal path. + */ + if (rd_load_image("/initrd.image") && ROOT_DEV != Root_RAM0) { +- sys_unlink("/initrd.image"); ++ sys_unlink((const char __force_user *)"/initrd.image"); + handle_initrd(); + return 1; + } + } +- sys_unlink("/initrd.image"); ++ sys_unlink((const char __force_user *)"/initrd.image"); + return 0; + } +diff --git a/init/do_mounts_md.c b/init/do_mounts_md.c +index 32c4799..c27ee74 100644 +--- a/init/do_mounts_md.c ++++ b/init/do_mounts_md.c +@@ -170,7 +170,7 @@ static void __init md_setup_drive(void) + partitioned ? "_d" : "", minor, + md_setup_args[ent].device_names); + +- fd = sys_open(name, 0, 0); ++ fd = sys_open((char __force_user *)name, 0, 0); + if (fd < 0) { + printk(KERN_ERR "md: open failed - cannot start " + "array %s\n", name); +@@ -233,7 +233,7 @@ static void __init md_setup_drive(void) + * array without it + */ + sys_close(fd); +- fd = sys_open(name, 0, 0); ++ fd = sys_open((char __force_user *)name, 0, 0); + sys_ioctl(fd, BLKRRPART, 0); + } + sys_close(fd); +@@ -283,7 +283,7 @@ static void __init autodetect_raid(void) + + wait_for_device_probe(); + +- fd = sys_open((const char __user __force *) "/dev/md0", 0, 0); ++ fd = sys_open((const char __force_user *) "/dev/md0", 0, 0); + if (fd >= 0) { + sys_ioctl(fd, RAID_AUTORUN, raid_autopart); + sys_close(fd); +diff --git a/init/initramfs.c b/init/initramfs.c +index 8216c30..25e8e32 100644 +--- a/init/initramfs.c ++++ b/init/initramfs.c +@@ -74,7 +74,7 @@ static void __init free_hash(void) + } + } + +-static long __init do_utime(char __user *filename, time_t mtime) ++static long __init do_utime(__force char __user *filename, time_t mtime) + { + struct timespec t[2]; + +@@ -109,7 +109,7 @@ static void __init dir_utime(void) + struct dir_entry *de, *tmp; + list_for_each_entry_safe(de, tmp, &dir_list, list) { + list_del(&de->list); +- do_utime(de->name, de->mtime); ++ do_utime((char __force_user *)de->name, de->mtime); + kfree(de->name); + kfree(de); + } +@@ -271,7 +271,7 @@ static int __init maybe_link(void) + if (nlink >= 2) { + char *old = find_link(major, minor, ino, mode, collected); + if (old) +- return (sys_link(old, collected) < 0) ? -1 : 1; ++ return (sys_link((char __force_user *)old, (char __force_user *)collected) < 0) ? -1 : 1; + } + return 0; + } +@@ -280,11 +280,11 @@ static void __init clean_path(char *path, umode_t mode) + { + struct stat st; + +- if (!sys_newlstat(path, &st) && (st.st_mode^mode) & S_IFMT) { ++ if (!sys_newlstat((char __force_user *)path, (struct stat __force_user *)&st) && (st.st_mode^mode) & S_IFMT) { + if (S_ISDIR(st.st_mode)) +- sys_rmdir(path); ++ sys_rmdir((char __force_user *)path); + else +- sys_unlink(path); ++ sys_unlink((char __force_user *)path); + } + } + +@@ -305,7 +305,7 @@ static int __init do_name(void) + int openflags = O_WRONLY|O_CREAT; + if (ml != 1) + openflags |= O_TRUNC; +- wfd = sys_open(collected, openflags, mode); ++ wfd = sys_open((char __force_user *)collected, openflags, mode); + + if (wfd >= 0) { + sys_fchown(wfd, uid, gid); +@@ -317,17 +317,17 @@ static int __init do_name(void) + } + } + } else if (S_ISDIR(mode)) { +- sys_mkdir(collected, mode); +- sys_chown(collected, uid, gid); +- sys_chmod(collected, mode); ++ sys_mkdir((char __force_user *)collected, mode); ++ sys_chown((char __force_user *)collected, uid, gid); ++ sys_chmod((char __force_user *)collected, mode); + dir_add(collected, mtime); + } else if (S_ISBLK(mode) || S_ISCHR(mode) || + S_ISFIFO(mode) || S_ISSOCK(mode)) { + if (maybe_link() == 0) { +- sys_mknod(collected, mode, rdev); +- sys_chown(collected, uid, gid); +- sys_chmod(collected, mode); +- do_utime(collected, mtime); ++ sys_mknod((char __force_user *)collected, mode, rdev); ++ sys_chown((char __force_user *)collected, uid, gid); ++ sys_chmod((char __force_user *)collected, mode); ++ do_utime((char __force_user *)collected, mtime); + } + } + return 0; +@@ -336,15 +336,15 @@ static int __init do_name(void) + static int __init do_copy(void) + { + if (count >= body_len) { +- sys_write(wfd, victim, body_len); ++ sys_write(wfd, (char __force_user *)victim, body_len); + sys_close(wfd); +- do_utime(vcollected, mtime); ++ do_utime((char __force_user *)vcollected, mtime); + kfree(vcollected); + eat(body_len); + state = SkipIt; + return 0; + } else { +- sys_write(wfd, victim, count); ++ sys_write(wfd, (char __force_user *)victim, count); + body_len -= count; + eat(count); + return 1; +@@ -355,9 +355,9 @@ static int __init do_symlink(void) + { + collected[N_ALIGN(name_len) + body_len] = '\0'; + clean_path(collected, 0); +- sys_symlink(collected + N_ALIGN(name_len), collected); +- sys_lchown(collected, uid, gid); +- do_utime(collected, mtime); ++ sys_symlink((char __force_user *)collected + N_ALIGN(name_len), (char __force_user *)collected); ++ sys_lchown((char __force_user *)collected, uid, gid); ++ do_utime((char __force_user *)collected, mtime); + state = SkipIt; + next_state = Reset; + return 0; +diff --git a/init/main.c b/init/main.c +index b08c5f7..09f865e 100644 +--- a/init/main.c ++++ b/init/main.c +@@ -95,6 +95,8 @@ static inline void mark_rodata_ro(void) { } + extern void tc_init(void); + #endif + ++extern void grsecurity_init(void); ++ + /* + * Debug helper: via this flag we know that we are in 'early bootup code' + * where only the boot processor is running with IRQ disabled. This means +@@ -148,6 +150,49 @@ static int __init set_reset_devices(char *str) + + __setup("reset_devices", set_reset_devices); + ++#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) ++extern char pax_enter_kernel_user[]; ++extern char pax_exit_kernel_user[]; ++extern pgdval_t clone_pgd_mask; ++#endif ++ ++#if defined(CONFIG_X86) && defined(CONFIG_PAX_MEMORY_UDEREF) ++static int __init setup_pax_nouderef(char *str) ++{ ++#ifdef CONFIG_X86_32 ++ unsigned int cpu; ++ struct desc_struct *gdt; ++ ++ for (cpu = 0; cpu < nr_cpu_ids; cpu++) { ++ gdt = get_cpu_gdt_table(cpu); ++ gdt[GDT_ENTRY_KERNEL_DS].type = 3; ++ gdt[GDT_ENTRY_KERNEL_DS].limit = 0xf; ++ gdt[GDT_ENTRY_DEFAULT_USER_CS].limit = 0xf; ++ gdt[GDT_ENTRY_DEFAULT_USER_DS].limit = 0xf; ++ } ++ asm("mov %0, %%ds; mov %0, %%es; mov %0, %%ss" : : "r" (__KERNEL_DS) : "memory"); ++#else ++ memcpy(pax_enter_kernel_user, (unsigned char []){0xc3}, 1); ++ memcpy(pax_exit_kernel_user, (unsigned char []){0xc3}, 1); ++ clone_pgd_mask = ~(pgdval_t)0UL; ++#endif ++ ++ return 0; ++} ++early_param("pax_nouderef", setup_pax_nouderef); ++#endif ++ ++#ifdef CONFIG_PAX_SOFTMODE ++int pax_softmode; ++ ++static int __init setup_pax_softmode(char *str) ++{ ++ get_option(&str, &pax_softmode); ++ return 1; ++} ++__setup("pax_softmode=", setup_pax_softmode); ++#endif ++ + static const char * argv_init[MAX_INIT_ARGS+2] = { "init", NULL, }; + const char * envp_init[MAX_INIT_ENVS+2] = { "HOME=/", "TERM=linux", NULL, }; + static const char *panic_later, *panic_param; +@@ -674,6 +719,7 @@ int __init_or_module do_one_initcall(initcall_t fn) + { + int count = preempt_count(); + int ret; ++ const char *msg1 = "", *msg2 = ""; + + if (initcall_debug) + ret = do_one_initcall_debug(fn); +@@ -686,15 +732,15 @@ int __init_or_module do_one_initcall(initcall_t fn) + sprintf(msgbuf, "error code %d ", ret); + + if (preempt_count() != count) { +- strlcat(msgbuf, "preemption imbalance ", sizeof(msgbuf)); ++ msg1 = " preemption imbalance"; + preempt_count() = count; + } + if (irqs_disabled()) { +- strlcat(msgbuf, "disabled interrupts ", sizeof(msgbuf)); ++ msg2 = " disabled interrupts"; + local_irq_enable(); + } +- if (msgbuf[0]) { +- printk("initcall %pF returned with %s\n", fn, msgbuf); ++ if (msgbuf[0] || *msg1 || *msg2) { ++ printk("initcall %pF returned with %s%s%s\n", fn, msgbuf, msg1, msg2); + } + + return ret; +@@ -865,7 +911,7 @@ static int __init kernel_init(void * unused) + do_basic_setup(); + + /* Open the /dev/console on the rootfs, this should never fail */ +- if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0) ++ if (sys_open((const char __force_user *) "/dev/console", O_RDWR, 0) < 0) + printk(KERN_WARNING "Warning: unable to open an initial console.\n"); + + (void) sys_dup(0); +@@ -878,11 +924,13 @@ static int __init kernel_init(void * unused) + if (!ramdisk_execute_command) + ramdisk_execute_command = "/init"; + +- if (sys_access((const char __user *) ramdisk_execute_command, 0) != 0) { ++ if (sys_access((const char __force_user *) ramdisk_execute_command, 0) != 0) { + ramdisk_execute_command = NULL; + prepare_namespace(); + } + ++ grsecurity_init(); ++ + /* + * Ok, we have completed the initial bootup, and + * we're essentially up and running. Get rid of the +diff --git a/ipc/mqueue.c b/ipc/mqueue.c +index 28bd64d..c66b72a 100644 +--- a/ipc/mqueue.c ++++ b/ipc/mqueue.c +@@ -156,6 +156,7 @@ static struct inode *mqueue_get_inode(struct super_block *sb, + mq_bytes = (mq_msg_tblsz + + (info->attr.mq_maxmsg * info->attr.mq_msgsize)); + ++ gr_learn_resource(current, RLIMIT_MSGQUEUE, u->mq_bytes + mq_bytes, 1); + spin_lock(&mq_lock); + if (u->mq_bytes + mq_bytes < u->mq_bytes || + u->mq_bytes + mq_bytes > rlimit(RLIMIT_MSGQUEUE)) { +diff --git a/ipc/msg.c b/ipc/msg.c +index 7385de2..a8180e08 100644 +--- a/ipc/msg.c ++++ b/ipc/msg.c +@@ -309,18 +309,19 @@ static inline int msg_security(struct kern_ipc_perm *ipcp, int msgflg) + return security_msg_queue_associate(msq, msgflg); + } + ++static struct ipc_ops msg_ops = { ++ .getnew = newque, ++ .associate = msg_security, ++ .more_checks = NULL ++}; ++ + SYSCALL_DEFINE2(msgget, key_t, key, int, msgflg) + { + struct ipc_namespace *ns; +- struct ipc_ops msg_ops; + struct ipc_params msg_params; + + ns = current->nsproxy->ipc_ns; + +- msg_ops.getnew = newque; +- msg_ops.associate = msg_security; +- msg_ops.more_checks = NULL; +- + msg_params.key = key; + msg_params.flg = msgflg; + +diff --git a/ipc/sem.c b/ipc/sem.c +index 5215a81..cfc0cac 100644 +--- a/ipc/sem.c ++++ b/ipc/sem.c +@@ -364,10 +364,15 @@ static inline int sem_more_checks(struct kern_ipc_perm *ipcp, + return 0; + } + ++static struct ipc_ops sem_ops = { ++ .getnew = newary, ++ .associate = sem_security, ++ .more_checks = sem_more_checks ++}; ++ + SYSCALL_DEFINE3(semget, key_t, key, int, nsems, int, semflg) + { + struct ipc_namespace *ns; +- struct ipc_ops sem_ops; + struct ipc_params sem_params; + + ns = current->nsproxy->ipc_ns; +@@ -375,10 +380,6 @@ SYSCALL_DEFINE3(semget, key_t, key, int, nsems, int, semflg) + if (nsems < 0 || nsems > ns->sc_semmsl) + return -EINVAL; + +- sem_ops.getnew = newary; +- sem_ops.associate = sem_security; +- sem_ops.more_checks = sem_more_checks; +- + sem_params.key = key; + sem_params.flg = semflg; + sem_params.u.nsems = nsems; +diff --git a/ipc/shm.c b/ipc/shm.c +index 406c5b2..bc66d67 100644 +--- a/ipc/shm.c ++++ b/ipc/shm.c +@@ -69,6 +69,14 @@ static void shm_destroy (struct ipc_namespace *ns, struct shmid_kernel *shp); + static int sysvipc_shm_proc_show(struct seq_file *s, void *it); + #endif + ++#ifdef CONFIG_GRKERNSEC ++extern int gr_handle_shmat(const pid_t shm_cprid, const pid_t shm_lapid, ++ const time_t shm_createtime, const uid_t cuid, ++ const int shmid); ++extern int gr_chroot_shmat(const pid_t shm_cprid, const pid_t shm_lapid, ++ const time_t shm_createtime); ++#endif ++ + void shm_init_ns(struct ipc_namespace *ns) + { + ns->shm_ctlmax = SHMMAX; +@@ -508,6 +516,14 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params) + shp->shm_lprid = 0; + shp->shm_atim = shp->shm_dtim = 0; + shp->shm_ctim = get_seconds(); ++#ifdef CONFIG_GRKERNSEC ++ { ++ struct timespec timeval; ++ do_posix_clock_monotonic_gettime(&timeval); ++ ++ shp->shm_createtime = timeval.tv_sec; ++ } ++#endif + shp->shm_segsz = size; + shp->shm_nattch = 0; + shp->shm_file = file; +@@ -559,18 +575,19 @@ static inline int shm_more_checks(struct kern_ipc_perm *ipcp, + return 0; + } + ++static struct ipc_ops shm_ops = { ++ .getnew = newseg, ++ .associate = shm_security, ++ .more_checks = shm_more_checks ++}; ++ + SYSCALL_DEFINE3(shmget, key_t, key, size_t, size, int, shmflg) + { + struct ipc_namespace *ns; +- struct ipc_ops shm_ops; + struct ipc_params shm_params; + + ns = current->nsproxy->ipc_ns; + +- shm_ops.getnew = newseg; +- shm_ops.associate = shm_security; +- shm_ops.more_checks = shm_more_checks; +- + shm_params.key = key; + shm_params.flg = shmflg; + shm_params.u.size = size; +@@ -988,6 +1005,12 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr) + f_mode = FMODE_READ | FMODE_WRITE; + } + if (shmflg & SHM_EXEC) { ++ ++#ifdef CONFIG_PAX_MPROTECT ++ if (current->mm->pax_flags & MF_PAX_MPROTECT) ++ goto out; ++#endif ++ + prot |= PROT_EXEC; + acc_mode |= S_IXUGO; + } +@@ -1011,9 +1034,21 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr) + if (err) + goto out_unlock; + ++#ifdef CONFIG_GRKERNSEC ++ if (!gr_handle_shmat(shp->shm_cprid, shp->shm_lapid, shp->shm_createtime, ++ shp->shm_perm.cuid, shmid) || ++ !gr_chroot_shmat(shp->shm_cprid, shp->shm_lapid, shp->shm_createtime)) { ++ err = -EACCES; ++ goto out_unlock; ++ } ++#endif ++ + path = shp->shm_file->f_path; + path_get(&path); + shp->shm_nattch++; ++#ifdef CONFIG_GRKERNSEC ++ shp->shm_lapid = current->pid; ++#endif + size = i_size_read(path.dentry->d_inode); + shm_unlock(shp); + +diff --git a/kernel/acct.c b/kernel/acct.c +index 02e6167..54824f7 100644 +--- a/kernel/acct.c ++++ b/kernel/acct.c +@@ -550,7 +550,7 @@ static void do_acct_process(struct bsd_acct_struct *acct, + */ + flim = current->signal->rlim[RLIMIT_FSIZE].rlim_cur; + current->signal->rlim[RLIMIT_FSIZE].rlim_cur = RLIM_INFINITY; +- file->f_op->write(file, (char *)&ac, ++ file->f_op->write(file, (char __force_user *)&ac, + sizeof(acct_t), &file->f_pos); + current->signal->rlim[RLIMIT_FSIZE].rlim_cur = flim; + set_fs(fs); +diff --git a/kernel/audit.c b/kernel/audit.c +index 1c7f2c6..9ba5359 100644 +--- a/kernel/audit.c ++++ b/kernel/audit.c +@@ -115,7 +115,7 @@ u32 audit_sig_sid = 0; + 3) suppressed due to audit_rate_limit + 4) suppressed due to audit_backlog_limit + */ +-static atomic_t audit_lost = ATOMIC_INIT(0); ++static atomic_unchecked_t audit_lost = ATOMIC_INIT(0); + + /* The netlink socket. */ + static struct sock *audit_sock; +@@ -237,7 +237,7 @@ void audit_log_lost(const char *message) + unsigned long now; + int print; + +- atomic_inc(&audit_lost); ++ atomic_inc_unchecked(&audit_lost); + + print = (audit_failure == AUDIT_FAIL_PANIC || !audit_rate_limit); + +@@ -256,7 +256,7 @@ void audit_log_lost(const char *message) + printk(KERN_WARNING + "audit: audit_lost=%d audit_rate_limit=%d " + "audit_backlog_limit=%d\n", +- atomic_read(&audit_lost), ++ atomic_read_unchecked(&audit_lost), + audit_rate_limit, + audit_backlog_limit); + audit_panic(message); +@@ -689,7 +689,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh) + status_set.pid = audit_pid; + status_set.rate_limit = audit_rate_limit; + status_set.backlog_limit = audit_backlog_limit; +- status_set.lost = atomic_read(&audit_lost); ++ status_set.lost = atomic_read_unchecked(&audit_lost); + status_set.backlog = skb_queue_len(&audit_skb_queue); + audit_send_reply(NETLINK_CB(skb).pid, seq, AUDIT_GET, 0, 0, + &status_set, sizeof(status_set)); +diff --git a/kernel/auditsc.c b/kernel/auditsc.c +index af1de0f..06dfe57 100644 +--- a/kernel/auditsc.c ++++ b/kernel/auditsc.c +@@ -2288,7 +2288,7 @@ int auditsc_get_stamp(struct audit_context *ctx, + } + + /* global counter which is incremented every time something logs in */ +-static atomic_t session_id = ATOMIC_INIT(0); ++static atomic_unchecked_t session_id = ATOMIC_INIT(0); + + /** + * audit_set_loginuid - set current task's audit_context loginuid +@@ -2312,7 +2312,7 @@ int audit_set_loginuid(uid_t loginuid) + return -EPERM; + #endif /* CONFIG_AUDIT_LOGINUID_IMMUTABLE */ + +- sessionid = atomic_inc_return(&session_id); ++ sessionid = atomic_inc_return_unchecked(&session_id); + if (context && context->in_syscall) { + struct audit_buffer *ab; + +diff --git a/kernel/capability.c b/kernel/capability.c +index 3f1adb6..c564db0 100644 +--- a/kernel/capability.c ++++ b/kernel/capability.c +@@ -202,6 +202,9 @@ SYSCALL_DEFINE2(capget, cap_user_header_t, header, cap_user_data_t, dataptr) + * before modification is attempted and the application + * fails. + */ ++ if (tocopy > ARRAY_SIZE(kdata)) ++ return -EFAULT; ++ + if (copy_to_user(dataptr, kdata, tocopy + * sizeof(struct __user_cap_data_struct))) { + return -EFAULT; +@@ -303,10 +306,11 @@ bool has_ns_capability(struct task_struct *t, + int ret; + + rcu_read_lock(); +- ret = security_capable(__task_cred(t), ns, cap); ++ ret = security_capable(__task_cred(t), ns, cap) == 0 && ++ gr_task_is_capable(t, __task_cred(t), cap); + rcu_read_unlock(); + +- return (ret == 0); ++ return ret; + } + + /** +@@ -343,10 +347,10 @@ bool has_ns_capability_noaudit(struct task_struct *t, + int ret; + + rcu_read_lock(); +- ret = security_capable_noaudit(__task_cred(t), ns, cap); ++ ret = security_capable_noaudit(__task_cred(t), ns, cap) == 0 && gr_task_is_capable_nolog(t, cap); + rcu_read_unlock(); + +- return (ret == 0); ++ return ret; + } + + /** +@@ -384,7 +388,7 @@ bool ns_capable(struct user_namespace *ns, int cap) + BUG(); + } + +- if (security_capable(current_cred(), ns, cap) == 0) { ++ if (security_capable(current_cred(), ns, cap) == 0 && gr_is_capable(cap)) { + current->flags |= PF_SUPERPRIV; + return true; + } +@@ -392,6 +396,21 @@ bool ns_capable(struct user_namespace *ns, int cap) + } + EXPORT_SYMBOL(ns_capable); + ++bool ns_capable_nolog(struct user_namespace *ns, int cap) ++{ ++ if (unlikely(!cap_valid(cap))) { ++ printk(KERN_CRIT "capable() called with invalid cap=%u\n", cap); ++ BUG(); ++ } ++ ++ if (security_capable(current_cred(), ns, cap) == 0 && gr_is_capable_nolog(cap)) { ++ current->flags |= PF_SUPERPRIV; ++ return true; ++ } ++ return false; ++} ++EXPORT_SYMBOL(ns_capable_nolog); ++ + /** + * capable - Determine if the current task has a superior capability in effect + * @cap: The capability to be tested for +@@ -408,6 +427,12 @@ bool capable(int cap) + } + EXPORT_SYMBOL(capable); + ++bool capable_nolog(int cap) ++{ ++ return ns_capable_nolog(&init_user_ns, cap); ++} ++EXPORT_SYMBOL(capable_nolog); ++ + /** + * nsown_capable - Check superior capability to one's own user_ns + * @cap: The capability in question +diff --git a/kernel/compat.c b/kernel/compat.c +index d2c67aa..a629b2e 100644 +--- a/kernel/compat.c ++++ b/kernel/compat.c +@@ -13,6 +13,7 @@ + + #include <linux/linkage.h> + #include <linux/compat.h> ++#include <linux/module.h> + #include <linux/errno.h> + #include <linux/time.h> + #include <linux/signal.h> +@@ -220,7 +221,7 @@ static long compat_nanosleep_restart(struct restart_block *restart) + mm_segment_t oldfs; + long ret; + +- restart->nanosleep.rmtp = (struct timespec __user *) &rmt; ++ restart->nanosleep.rmtp = (struct timespec __force_user *) &rmt; + oldfs = get_fs(); + set_fs(KERNEL_DS); + ret = hrtimer_nanosleep_restart(restart); +@@ -252,7 +253,7 @@ asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp, + oldfs = get_fs(); + set_fs(KERNEL_DS); + ret = hrtimer_nanosleep(&tu, +- rmtp ? (struct timespec __user *)&rmt : NULL, ++ rmtp ? (struct timespec __force_user *)&rmt : NULL, + HRTIMER_MODE_REL, CLOCK_MONOTONIC); + set_fs(oldfs); + +@@ -361,7 +362,7 @@ asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set) + mm_segment_t old_fs = get_fs(); + + set_fs(KERNEL_DS); +- ret = sys_sigpending((old_sigset_t __user *) &s); ++ ret = sys_sigpending((old_sigset_t __force_user *) &s); + set_fs(old_fs); + if (ret == 0) + ret = put_user(s, set); +@@ -451,7 +452,7 @@ asmlinkage long compat_sys_old_getrlimit(unsigned int resource, + mm_segment_t old_fs = get_fs(); + + set_fs(KERNEL_DS); +- ret = sys_old_getrlimit(resource, &r); ++ ret = sys_old_getrlimit(resource, (struct rlimit __force_user *)&r); + set_fs(old_fs); + + if (!ret) { +@@ -523,7 +524,7 @@ asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru) + mm_segment_t old_fs = get_fs(); + + set_fs(KERNEL_DS); +- ret = sys_getrusage(who, (struct rusage __user *) &r); ++ ret = sys_getrusage(who, (struct rusage __force_user *) &r); + set_fs(old_fs); + + if (ret) +@@ -550,8 +551,8 @@ compat_sys_wait4(compat_pid_t pid, compat_uint_t __user *stat_addr, int options, + set_fs (KERNEL_DS); + ret = sys_wait4(pid, + (stat_addr ? +- (unsigned int __user *) &status : NULL), +- options, (struct rusage __user *) &r); ++ (unsigned int __force_user *) &status : NULL), ++ options, (struct rusage __force_user *) &r); + set_fs (old_fs); + + if (ret > 0) { +@@ -576,8 +577,8 @@ asmlinkage long compat_sys_waitid(int which, compat_pid_t pid, + memset(&info, 0, sizeof(info)); + + set_fs(KERNEL_DS); +- ret = sys_waitid(which, pid, (siginfo_t __user *)&info, options, +- uru ? (struct rusage __user *)&ru : NULL); ++ ret = sys_waitid(which, pid, (siginfo_t __force_user *)&info, options, ++ uru ? (struct rusage __force_user *)&ru : NULL); + set_fs(old_fs); + + if ((ret < 0) || (info.si_signo == 0)) +@@ -707,8 +708,8 @@ long compat_sys_timer_settime(timer_t timer_id, int flags, + oldfs = get_fs(); + set_fs(KERNEL_DS); + err = sys_timer_settime(timer_id, flags, +- (struct itimerspec __user *) &newts, +- (struct itimerspec __user *) &oldts); ++ (struct itimerspec __force_user *) &newts, ++ (struct itimerspec __force_user *) &oldts); + set_fs(oldfs); + if (!err && old && put_compat_itimerspec(old, &oldts)) + return -EFAULT; +@@ -725,7 +726,7 @@ long compat_sys_timer_gettime(timer_t timer_id, + oldfs = get_fs(); + set_fs(KERNEL_DS); + err = sys_timer_gettime(timer_id, +- (struct itimerspec __user *) &ts); ++ (struct itimerspec __force_user *) &ts); + set_fs(oldfs); + if (!err && put_compat_itimerspec(setting, &ts)) + return -EFAULT; +@@ -744,7 +745,7 @@ long compat_sys_clock_settime(clockid_t which_clock, + oldfs = get_fs(); + set_fs(KERNEL_DS); + err = sys_clock_settime(which_clock, +- (struct timespec __user *) &ts); ++ (struct timespec __force_user *) &ts); + set_fs(oldfs); + return err; + } +@@ -759,7 +760,7 @@ long compat_sys_clock_gettime(clockid_t which_clock, + oldfs = get_fs(); + set_fs(KERNEL_DS); + err = sys_clock_gettime(which_clock, +- (struct timespec __user *) &ts); ++ (struct timespec __force_user *) &ts); + set_fs(oldfs); + if (!err && put_compat_timespec(&ts, tp)) + return -EFAULT; +@@ -779,7 +780,7 @@ long compat_sys_clock_adjtime(clockid_t which_clock, + + oldfs = get_fs(); + set_fs(KERNEL_DS); +- ret = sys_clock_adjtime(which_clock, (struct timex __user *) &txc); ++ ret = sys_clock_adjtime(which_clock, (struct timex __force_user *) &txc); + set_fs(oldfs); + + err = compat_put_timex(utp, &txc); +@@ -799,7 +800,7 @@ long compat_sys_clock_getres(clockid_t which_clock, + oldfs = get_fs(); + set_fs(KERNEL_DS); + err = sys_clock_getres(which_clock, +- (struct timespec __user *) &ts); ++ (struct timespec __force_user *) &ts); + set_fs(oldfs); + if (!err && tp && put_compat_timespec(&ts, tp)) + return -EFAULT; +@@ -811,9 +812,9 @@ static long compat_clock_nanosleep_restart(struct restart_block *restart) + long err; + mm_segment_t oldfs; + struct timespec tu; +- struct compat_timespec *rmtp = restart->nanosleep.compat_rmtp; ++ struct compat_timespec __user *rmtp = restart->nanosleep.compat_rmtp; + +- restart->nanosleep.rmtp = (struct timespec __user *) &tu; ++ restart->nanosleep.rmtp = (struct timespec __force_user *) &tu; + oldfs = get_fs(); + set_fs(KERNEL_DS); + err = clock_nanosleep_restart(restart); +@@ -845,8 +846,8 @@ long compat_sys_clock_nanosleep(clockid_t which_clock, int flags, + oldfs = get_fs(); + set_fs(KERNEL_DS); + err = sys_clock_nanosleep(which_clock, flags, +- (struct timespec __user *) &in, +- (struct timespec __user *) &out); ++ (struct timespec __force_user *) &in, ++ (struct timespec __force_user *) &out); + set_fs(oldfs); + + if ((err == -ERESTART_RESTARTBLOCK) && rmtp && +diff --git a/kernel/configs.c b/kernel/configs.c +index 42e8fa0..9e7406b 100644 +--- a/kernel/configs.c ++++ b/kernel/configs.c +@@ -74,8 +74,19 @@ static int __init ikconfig_init(void) + struct proc_dir_entry *entry; + + /* create the current config file */ ++#if defined(CONFIG_GRKERNSEC_PROC_ADD) || defined(CONFIG_GRKERNSEC_HIDESYM) ++#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_HIDESYM) ++ entry = proc_create("config.gz", S_IFREG | S_IRUSR, NULL, ++ &ikconfig_file_ops); ++#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++ entry = proc_create("config.gz", S_IFREG | S_IRUSR | S_IRGRP, NULL, ++ &ikconfig_file_ops); ++#endif ++#else + entry = proc_create("config.gz", S_IFREG | S_IRUGO, NULL, + &ikconfig_file_ops); ++#endif ++ + if (!entry) + return -ENOMEM; + +diff --git a/kernel/cred.c b/kernel/cred.c +index e70683d..27761b6 100644 +--- a/kernel/cred.c ++++ b/kernel/cred.c +@@ -205,6 +205,15 @@ void exit_creds(struct task_struct *tsk) + validate_creds(cred); + put_cred(cred); + } ++ ++#ifdef CONFIG_GRKERNSEC_SETXID ++ cred = (struct cred *) tsk->delayed_cred; ++ if (cred) { ++ tsk->delayed_cred = NULL; ++ validate_creds(cred); ++ put_cred(cred); ++ } ++#endif + } + + /** +@@ -473,7 +482,7 @@ error_put: + * Always returns 0 thus allowing this function to be tail-called at the end + * of, say, sys_setgid(). + */ +-int commit_creds(struct cred *new) ++static int __commit_creds(struct cred *new) + { + struct task_struct *task = current; + const struct cred *old = task->real_cred; +@@ -492,6 +501,8 @@ int commit_creds(struct cred *new) + + get_cred(new); /* we will require a ref for the subj creds too */ + ++ gr_set_role_label(task, new->uid, new->gid); ++ + /* dumpability changes */ + if (old->euid != new->euid || + old->egid != new->egid || +@@ -541,6 +552,101 @@ int commit_creds(struct cred *new) + put_cred(old); + return 0; + } ++#ifdef CONFIG_GRKERNSEC_SETXID ++extern int set_user(struct cred *new); ++ ++void gr_delayed_cred_worker(void) ++{ ++ const struct cred *new = current->delayed_cred; ++ struct cred *ncred; ++ ++ current->delayed_cred = NULL; ++ ++ if (current_uid() && new != NULL) { ++ // from doing get_cred on it when queueing this ++ put_cred(new); ++ return; ++ } else if (new == NULL) ++ return; ++ ++ ncred = prepare_creds(); ++ if (!ncred) ++ goto die; ++ // uids ++ ncred->uid = new->uid; ++ ncred->euid = new->euid; ++ ncred->suid = new->suid; ++ ncred->fsuid = new->fsuid; ++ // gids ++ ncred->gid = new->gid; ++ ncred->egid = new->egid; ++ ncred->sgid = new->sgid; ++ ncred->fsgid = new->fsgid; ++ // groups ++ if (set_groups(ncred, new->group_info) < 0) { ++ abort_creds(ncred); ++ goto die; ++ } ++ // caps ++ ncred->securebits = new->securebits; ++ ncred->cap_inheritable = new->cap_inheritable; ++ ncred->cap_permitted = new->cap_permitted; ++ ncred->cap_effective = new->cap_effective; ++ ncred->cap_bset = new->cap_bset; ++ ++ if (set_user(ncred)) { ++ abort_creds(ncred); ++ goto die; ++ } ++ ++ // from doing get_cred on it when queueing this ++ put_cred(new); ++ ++ __commit_creds(ncred); ++ return; ++die: ++ // from doing get_cred on it when queueing this ++ put_cred(new); ++ do_group_exit(SIGKILL); ++} ++#endif ++ ++int commit_creds(struct cred *new) ++{ ++#ifdef CONFIG_GRKERNSEC_SETXID ++ int ret; ++ int schedule_it = 0; ++ struct task_struct *t; ++ ++ /* we won't get called with tasklist_lock held for writing ++ and interrupts disabled as the cred struct in that case is ++ init_cred ++ */ ++ if (grsec_enable_setxid && !current_is_single_threaded() && ++ !current_uid() && new->uid) { ++ schedule_it = 1; ++ } ++ ret = __commit_creds(new); ++ if (schedule_it) { ++ rcu_read_lock(); ++ read_lock(&tasklist_lock); ++ for (t = next_thread(current); t != current; ++ t = next_thread(t)) { ++ if (t->delayed_cred == NULL) { ++ t->delayed_cred = get_cred(new); ++ set_tsk_thread_flag(t, TIF_GRSEC_SETXID); ++ set_tsk_need_resched(t); ++ } ++ } ++ read_unlock(&tasklist_lock); ++ rcu_read_unlock(); ++ } ++ return ret; ++#else ++ return __commit_creds(new); ++#endif ++} ++ + EXPORT_SYMBOL(commit_creds); + + /** +diff --git a/kernel/debug/debug_core.c b/kernel/debug/debug_core.c +index 0557f24..1a00d9a 100644 +--- a/kernel/debug/debug_core.c ++++ b/kernel/debug/debug_core.c +@@ -122,7 +122,7 @@ static DEFINE_RAW_SPINLOCK(dbg_slave_lock); + */ + static atomic_t masters_in_kgdb; + static atomic_t slaves_in_kgdb; +-static atomic_t kgdb_break_tasklet_var; ++static atomic_unchecked_t kgdb_break_tasklet_var; + atomic_t kgdb_setting_breakpoint; + + struct task_struct *kgdb_usethread; +@@ -132,7 +132,7 @@ int kgdb_single_step; + static pid_t kgdb_sstep_pid; + + /* to keep track of the CPU which is doing the single stepping*/ +-atomic_t kgdb_cpu_doing_single_step = ATOMIC_INIT(-1); ++atomic_unchecked_t kgdb_cpu_doing_single_step = ATOMIC_INIT(-1); + + /* + * If you are debugging a problem where roundup (the collection of +@@ -540,7 +540,7 @@ return_normal: + * kernel will only try for the value of sstep_tries before + * giving up and continuing on. + */ +- if (atomic_read(&kgdb_cpu_doing_single_step) != -1 && ++ if (atomic_read_unchecked(&kgdb_cpu_doing_single_step) != -1 && + (kgdb_info[cpu].task && + kgdb_info[cpu].task->pid != kgdb_sstep_pid) && --sstep_tries) { + atomic_set(&kgdb_active, -1); +@@ -634,8 +634,8 @@ cpu_master_loop: + } + + kgdb_restore: +- if (atomic_read(&kgdb_cpu_doing_single_step) != -1) { +- int sstep_cpu = atomic_read(&kgdb_cpu_doing_single_step); ++ if (atomic_read_unchecked(&kgdb_cpu_doing_single_step) != -1) { ++ int sstep_cpu = atomic_read_unchecked(&kgdb_cpu_doing_single_step); + if (kgdb_info[sstep_cpu].task) + kgdb_sstep_pid = kgdb_info[sstep_cpu].task->pid; + else +@@ -861,18 +861,18 @@ static void kgdb_unregister_callbacks(void) + static void kgdb_tasklet_bpt(unsigned long ing) + { + kgdb_breakpoint(); +- atomic_set(&kgdb_break_tasklet_var, 0); ++ atomic_set_unchecked(&kgdb_break_tasklet_var, 0); + } + + static DECLARE_TASKLET(kgdb_tasklet_breakpoint, kgdb_tasklet_bpt, 0); + + void kgdb_schedule_breakpoint(void) + { +- if (atomic_read(&kgdb_break_tasklet_var) || ++ if (atomic_read_unchecked(&kgdb_break_tasklet_var) || + atomic_read(&kgdb_active) != -1 || + atomic_read(&kgdb_setting_breakpoint)) + return; +- atomic_inc(&kgdb_break_tasklet_var); ++ atomic_inc_unchecked(&kgdb_break_tasklet_var); + tasklet_schedule(&kgdb_tasklet_breakpoint); + } + EXPORT_SYMBOL_GPL(kgdb_schedule_breakpoint); +diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c +index 67b847d..93834dd 100644 +--- a/kernel/debug/kdb/kdb_main.c ++++ b/kernel/debug/kdb/kdb_main.c +@@ -1983,7 +1983,7 @@ static int kdb_lsmod(int argc, const char **argv) + list_for_each_entry(mod, kdb_modules, list) { + + kdb_printf("%-20s%8u 0x%p ", mod->name, +- mod->core_size, (void *)mod); ++ mod->core_size_rx + mod->core_size_rw, (void *)mod); + #ifdef CONFIG_MODULE_UNLOAD + kdb_printf("%4ld ", module_refcount(mod)); + #endif +@@ -1993,7 +1993,7 @@ static int kdb_lsmod(int argc, const char **argv) + kdb_printf(" (Loading)"); + else + kdb_printf(" (Live)"); +- kdb_printf(" 0x%p", mod->module_core); ++ kdb_printf(" 0x%p 0x%p", mod->module_core_rx, mod->module_core_rw); + + #ifdef CONFIG_MODULE_UNLOAD + { +diff --git a/kernel/events/core.c b/kernel/events/core.c +index fd126f8..70b755b 100644 +--- a/kernel/events/core.c ++++ b/kernel/events/core.c +@@ -181,7 +181,7 @@ int perf_proc_update_handler(struct ctl_table *table, int write, + return 0; + } + +-static atomic64_t perf_event_id; ++static atomic64_unchecked_t perf_event_id; + + static void cpu_ctx_sched_out(struct perf_cpu_context *cpuctx, + enum event_type_t event_type); +@@ -2659,7 +2659,7 @@ static void __perf_event_read(void *info) + + static inline u64 perf_event_count(struct perf_event *event) + { +- return local64_read(&event->count) + atomic64_read(&event->child_count); ++ return local64_read(&event->count) + atomic64_read_unchecked(&event->child_count); + } + + static u64 perf_event_read(struct perf_event *event) +@@ -2983,9 +2983,9 @@ u64 perf_event_read_value(struct perf_event *event, u64 *enabled, u64 *running) + mutex_lock(&event->child_mutex); + total += perf_event_read(event); + *enabled += event->total_time_enabled + +- atomic64_read(&event->child_total_time_enabled); ++ atomic64_read_unchecked(&event->child_total_time_enabled); + *running += event->total_time_running + +- atomic64_read(&event->child_total_time_running); ++ atomic64_read_unchecked(&event->child_total_time_running); + + list_for_each_entry(child, &event->child_list, child_list) { + total += perf_event_read(child); +@@ -3393,10 +3393,10 @@ void perf_event_update_userpage(struct perf_event *event) + userpg->offset -= local64_read(&event->hw.prev_count); + + userpg->time_enabled = enabled + +- atomic64_read(&event->child_total_time_enabled); ++ atomic64_read_unchecked(&event->child_total_time_enabled); + + userpg->time_running = running + +- atomic64_read(&event->child_total_time_running); ++ atomic64_read_unchecked(&event->child_total_time_running); + + arch_perf_update_userpage(userpg, now); + +@@ -3829,11 +3829,11 @@ static void perf_output_read_one(struct perf_output_handle *handle, + values[n++] = perf_event_count(event); + if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) { + values[n++] = enabled + +- atomic64_read(&event->child_total_time_enabled); ++ atomic64_read_unchecked(&event->child_total_time_enabled); + } + if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) { + values[n++] = running + +- atomic64_read(&event->child_total_time_running); ++ atomic64_read_unchecked(&event->child_total_time_running); + } + if (read_format & PERF_FORMAT_ID) + values[n++] = primary_event_id(event); +@@ -4511,12 +4511,12 @@ static void perf_event_mmap_event(struct perf_mmap_event *mmap_event) + * need to add enough zero bytes after the string to handle + * the 64bit alignment we do later. + */ +- buf = kzalloc(PATH_MAX + sizeof(u64), GFP_KERNEL); ++ buf = kzalloc(PATH_MAX, GFP_KERNEL); + if (!buf) { + name = strncpy(tmp, "//enomem", sizeof(tmp)); + goto got_name; + } +- name = d_path(&file->f_path, buf, PATH_MAX); ++ name = d_path(&file->f_path, buf, PATH_MAX - sizeof(u64)); + if (IS_ERR(name)) { + name = strncpy(tmp, "//toolong", sizeof(tmp)); + goto got_name; +@@ -5929,7 +5929,7 @@ perf_event_alloc(struct perf_event_attr *attr, int cpu, + event->parent = parent_event; + + event->ns = get_pid_ns(current->nsproxy->pid_ns); +- event->id = atomic64_inc_return(&perf_event_id); ++ event->id = atomic64_inc_return_unchecked(&perf_event_id); + + event->state = PERF_EVENT_STATE_INACTIVE; + +@@ -6491,10 +6491,10 @@ static void sync_child_event(struct perf_event *child_event, + /* + * Add back the child's count to the parent's count: + */ +- atomic64_add(child_val, &parent_event->child_count); +- atomic64_add(child_event->total_time_enabled, ++ atomic64_add_unchecked(child_val, &parent_event->child_count); ++ atomic64_add_unchecked(child_event->total_time_enabled, + &parent_event->child_total_time_enabled); +- atomic64_add(child_event->total_time_running, ++ atomic64_add_unchecked(child_event->total_time_running, + &parent_event->child_total_time_running); + + /* +diff --git a/kernel/exit.c b/kernel/exit.c +index 9d81012..d7911f1 100644 +--- a/kernel/exit.c ++++ b/kernel/exit.c +@@ -59,6 +59,10 @@ + #include <asm/pgtable.h> + #include <asm/mmu_context.h> + ++#ifdef CONFIG_GRKERNSEC ++extern rwlock_t grsec_exec_file_lock; ++#endif ++ + static void exit_mm(struct task_struct * tsk); + + static void __unhash_process(struct task_struct *p, bool group_dead) +@@ -170,6 +174,10 @@ void release_task(struct task_struct * p) + struct task_struct *leader; + int zap_leader; + repeat: ++#ifdef CONFIG_NET ++ gr_del_task_from_ip_table(p); ++#endif ++ + /* don't need to get the RCU readlock here - the process is dead and + * can't be modifying its own credentials. But shut RCU-lockdep up */ + rcu_read_lock(); +@@ -382,7 +390,7 @@ int allow_signal(int sig) + * know it'll be handled, so that they don't get converted to + * SIGKILL or just silently dropped. + */ +- current->sighand->action[(sig)-1].sa.sa_handler = (void __user *)2; ++ current->sighand->action[(sig)-1].sa.sa_handler = (__force void __user *)2; + recalc_sigpending(); + spin_unlock_irq(¤t->sighand->siglock); + return 0; +@@ -418,6 +426,17 @@ void daemonize(const char *name, ...) + vsnprintf(current->comm, sizeof(current->comm), name, args); + va_end(args); + ++#ifdef CONFIG_GRKERNSEC ++ write_lock(&grsec_exec_file_lock); ++ if (current->exec_file) { ++ fput(current->exec_file); ++ current->exec_file = NULL; ++ } ++ write_unlock(&grsec_exec_file_lock); ++#endif ++ ++ gr_set_kernel_label(current); ++ + /* + * If we were started as result of loading a module, close all of the + * user space pages. We don't need them, and if we didn't close them +@@ -901,6 +920,8 @@ void do_exit(long code) + struct task_struct *tsk = current; + int group_dead; + ++ set_fs(USER_DS); ++ + profile_task_exit(tsk); + + WARN_ON(blk_needs_flush_plug(tsk)); +@@ -917,7 +938,6 @@ void do_exit(long code) + * mm_release()->clear_child_tid() from writing to a user-controlled + * kernel address. + */ +- set_fs(USER_DS); + + ptrace_event(PTRACE_EVENT_EXIT, code); + +@@ -978,6 +998,9 @@ void do_exit(long code) + tsk->exit_code = code; + taskstats_exit(tsk, group_dead); + ++ gr_acl_handle_psacct(tsk, code); ++ gr_acl_handle_exit(); ++ + exit_mm(tsk); + + if (group_dead) +@@ -1094,7 +1117,7 @@ SYSCALL_DEFINE1(exit, int, error_code) + * Take down every thread in the group. This is called by fatal signals + * as well as by sys_exit_group (below). + */ +-void ++__noreturn void + do_group_exit(int exit_code) + { + struct signal_struct *sig = current->signal; +diff --git a/kernel/fork.c b/kernel/fork.c +index 8163333..aee97f3 100644 +--- a/kernel/fork.c ++++ b/kernel/fork.c +@@ -274,19 +274,24 @@ static struct task_struct *dup_task_struct(struct task_struct *orig) + } + + err = arch_dup_task_struct(tsk, orig); +- if (err) +- goto out; + ++ /* ++ * We defer looking at err, because we will need this setup ++ * for the clean up path to work correctly. ++ */ + tsk->stack = ti; +- + setup_thread_stack(tsk, orig); ++ ++ if (err) ++ goto out; ++ + clear_user_return_notifier(tsk); + clear_tsk_need_resched(tsk); + stackend = end_of_stack(tsk); + *stackend = STACK_END_MAGIC; /* for overflow detection */ + + #ifdef CONFIG_CC_STACKPROTECTOR +- tsk->stack_canary = get_random_int(); ++ tsk->stack_canary = pax_get_random_long(); + #endif + + /* +@@ -310,13 +315,78 @@ out: + } + + #ifdef CONFIG_MMU ++static struct vm_area_struct *dup_vma(struct mm_struct *mm, struct mm_struct *oldmm, struct vm_area_struct *mpnt) ++{ ++ struct vm_area_struct *tmp; ++ unsigned long charge; ++ struct mempolicy *pol; ++ struct file *file; ++ ++ charge = 0; ++ if (mpnt->vm_flags & VM_ACCOUNT) { ++ unsigned long len; ++ len = (mpnt->vm_end - mpnt->vm_start) >> PAGE_SHIFT; ++ if (security_vm_enough_memory_mm(oldmm, len)) /* sic */ ++ goto fail_nomem; ++ charge = len; ++ } ++ tmp = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL); ++ if (!tmp) ++ goto fail_nomem; ++ *tmp = *mpnt; ++ tmp->vm_mm = mm; ++ INIT_LIST_HEAD(&tmp->anon_vma_chain); ++ pol = mpol_dup(vma_policy(mpnt)); ++ if (IS_ERR(pol)) ++ goto fail_nomem_policy; ++ vma_set_policy(tmp, pol); ++ if (anon_vma_fork(tmp, mpnt)) ++ goto fail_nomem_anon_vma_fork; ++ tmp->vm_flags &= ~VM_LOCKED; ++ tmp->vm_next = tmp->vm_prev = NULL; ++ tmp->vm_mirror = NULL; ++ file = tmp->vm_file; ++ if (file) { ++ struct inode *inode = file->f_path.dentry->d_inode; ++ struct address_space *mapping = file->f_mapping; ++ ++ get_file(file); ++ if (tmp->vm_flags & VM_DENYWRITE) ++ atomic_dec(&inode->i_writecount); ++ mutex_lock(&mapping->i_mmap_mutex); ++ if (tmp->vm_flags & VM_SHARED) ++ mapping->i_mmap_writable++; ++ flush_dcache_mmap_lock(mapping); ++ /* insert tmp into the share list, just after mpnt */ ++ vma_prio_tree_add(tmp, mpnt); ++ flush_dcache_mmap_unlock(mapping); ++ mutex_unlock(&mapping->i_mmap_mutex); ++ } ++ ++ /* ++ * Clear hugetlb-related page reserves for children. This only ++ * affects MAP_PRIVATE mappings. Faults generated by the child ++ * are not guaranteed to succeed, even if read-only ++ */ ++ if (is_vm_hugetlb_page(tmp)) ++ reset_vma_resv_huge_pages(tmp); ++ ++ return tmp; ++ ++fail_nomem_anon_vma_fork: ++ mpol_put(pol); ++fail_nomem_policy: ++ kmem_cache_free(vm_area_cachep, tmp); ++fail_nomem: ++ vm_unacct_memory(charge); ++ return NULL; ++} ++ + static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm) + { + struct vm_area_struct *mpnt, *tmp, *prev, **pprev; + struct rb_node **rb_link, *rb_parent; + int retval; +- unsigned long charge; +- struct mempolicy *pol; + + down_write(&oldmm->mmap_sem); + flush_cache_dup_mm(oldmm); +@@ -328,8 +398,8 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm) + mm->locked_vm = 0; + mm->mmap = NULL; + mm->mmap_cache = NULL; +- mm->free_area_cache = oldmm->mmap_base; +- mm->cached_hole_size = ~0UL; ++ mm->free_area_cache = oldmm->free_area_cache; ++ mm->cached_hole_size = oldmm->cached_hole_size; + mm->map_count = 0; + cpumask_clear(mm_cpumask(mm)); + mm->mm_rb = RB_ROOT; +@@ -345,8 +415,6 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm) + + prev = NULL; + for (mpnt = oldmm->mmap; mpnt; mpnt = mpnt->vm_next) { +- struct file *file; +- + if (mpnt->vm_flags & VM_DONTCOPY) { + long pages = vma_pages(mpnt); + mm->total_vm -= pages; +@@ -354,54 +422,11 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm) + -pages); + continue; + } +- charge = 0; +- if (mpnt->vm_flags & VM_ACCOUNT) { +- unsigned long len; +- len = (mpnt->vm_end - mpnt->vm_start) >> PAGE_SHIFT; +- if (security_vm_enough_memory_mm(oldmm, len)) /* sic */ +- goto fail_nomem; +- charge = len; ++ tmp = dup_vma(mm, oldmm, mpnt); ++ if (!tmp) { ++ retval = -ENOMEM; ++ goto out; + } +- tmp = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL); +- if (!tmp) +- goto fail_nomem; +- *tmp = *mpnt; +- INIT_LIST_HEAD(&tmp->anon_vma_chain); +- pol = mpol_dup(vma_policy(mpnt)); +- retval = PTR_ERR(pol); +- if (IS_ERR(pol)) +- goto fail_nomem_policy; +- vma_set_policy(tmp, pol); +- tmp->vm_mm = mm; +- if (anon_vma_fork(tmp, mpnt)) +- goto fail_nomem_anon_vma_fork; +- tmp->vm_flags &= ~VM_LOCKED; +- tmp->vm_next = tmp->vm_prev = NULL; +- file = tmp->vm_file; +- if (file) { +- struct inode *inode = file->f_path.dentry->d_inode; +- struct address_space *mapping = file->f_mapping; +- +- get_file(file); +- if (tmp->vm_flags & VM_DENYWRITE) +- atomic_dec(&inode->i_writecount); +- mutex_lock(&mapping->i_mmap_mutex); +- if (tmp->vm_flags & VM_SHARED) +- mapping->i_mmap_writable++; +- flush_dcache_mmap_lock(mapping); +- /* insert tmp into the share list, just after mpnt */ +- vma_prio_tree_add(tmp, mpnt); +- flush_dcache_mmap_unlock(mapping); +- mutex_unlock(&mapping->i_mmap_mutex); +- } +- +- /* +- * Clear hugetlb-related page reserves for children. This only +- * affects MAP_PRIVATE mappings. Faults generated by the child +- * are not guaranteed to succeed, even if read-only +- */ +- if (is_vm_hugetlb_page(tmp)) +- reset_vma_resv_huge_pages(tmp); + + /* + * Link in the new vma and copy the page table entries. +@@ -424,6 +449,31 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm) + if (retval) + goto out; + } ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (oldmm->pax_flags & MF_PAX_SEGMEXEC) { ++ struct vm_area_struct *mpnt_m; ++ ++ for (mpnt = oldmm->mmap, mpnt_m = mm->mmap; mpnt; mpnt = mpnt->vm_next, mpnt_m = mpnt_m->vm_next) { ++ BUG_ON(!mpnt_m || mpnt_m->vm_mirror || mpnt->vm_mm != oldmm || mpnt_m->vm_mm != mm); ++ ++ if (!mpnt->vm_mirror) ++ continue; ++ ++ if (mpnt->vm_end <= SEGMEXEC_TASK_SIZE) { ++ BUG_ON(mpnt->vm_mirror->vm_mirror != mpnt); ++ mpnt->vm_mirror = mpnt_m; ++ } else { ++ BUG_ON(mpnt->vm_mirror->vm_mirror == mpnt || mpnt->vm_mirror->vm_mirror->vm_mm != mm); ++ mpnt_m->vm_mirror = mpnt->vm_mirror->vm_mirror; ++ mpnt_m->vm_mirror->vm_mirror = mpnt_m; ++ mpnt->vm_mirror->vm_mirror = mpnt; ++ } ++ } ++ BUG_ON(mpnt_m); ++ } ++#endif ++ + /* a new mm has just been created */ + arch_dup_mmap(oldmm, mm); + retval = 0; +@@ -432,14 +482,6 @@ out: + flush_tlb_mm(oldmm); + up_write(&oldmm->mmap_sem); + return retval; +-fail_nomem_anon_vma_fork: +- mpol_put(pol); +-fail_nomem_policy: +- kmem_cache_free(vm_area_cachep, tmp); +-fail_nomem: +- retval = -ENOMEM; +- vm_unacct_memory(charge); +- goto out; + } + + static inline int mm_alloc_pgd(struct mm_struct *mm) +@@ -676,8 +718,8 @@ struct mm_struct *mm_access(struct task_struct *task, unsigned int mode) + return ERR_PTR(err); + + mm = get_task_mm(task); +- if (mm && mm != current->mm && +- !ptrace_may_access(task, mode)) { ++ if (mm && ((mm != current->mm && !ptrace_may_access(task, mode)) || ++ (mode == PTRACE_MODE_ATTACH && (gr_handle_proc_ptrace(task) || gr_acl_handle_procpidmem(task))))) { + mmput(mm); + mm = ERR_PTR(-EACCES); + } +@@ -899,13 +941,14 @@ static int copy_fs(unsigned long clone_flags, struct task_struct *tsk) + spin_unlock(&fs->lock); + return -EAGAIN; + } +- fs->users++; ++ atomic_inc(&fs->users); + spin_unlock(&fs->lock); + return 0; + } + tsk->fs = copy_fs_struct(fs); + if (!tsk->fs) + return -ENOMEM; ++ gr_set_chroot_entries(tsk, &tsk->fs->root); + return 0; + } + +@@ -1172,6 +1215,9 @@ static struct task_struct *copy_process(unsigned long clone_flags, + DEBUG_LOCKS_WARN_ON(!p->softirqs_enabled); + #endif + retval = -EAGAIN; ++ ++ gr_learn_resource(p, RLIMIT_NPROC, atomic_read(&p->real_cred->user->processes), 0); ++ + if (atomic_read(&p->real_cred->user->processes) >= + task_rlimit(p, RLIMIT_NPROC)) { + if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RESOURCE) && +@@ -1392,6 +1438,9 @@ static struct task_struct *copy_process(unsigned long clone_flags, + /* Need tasklist lock for parent etc handling! */ + write_lock_irq(&tasklist_lock); + ++ /* synchronizes with gr_set_acls() */ ++ gr_copy_label(p); ++ + /* CLONE_PARENT re-uses the old parent */ + if (clone_flags & (CLONE_PARENT|CLONE_THREAD)) { + p->real_parent = current->real_parent; +@@ -1502,6 +1551,8 @@ bad_fork_cleanup_count: + bad_fork_free: + free_task(p); + fork_out: ++ gr_log_forkfail(retval); ++ + return ERR_PTR(retval); + } + +@@ -1602,6 +1653,8 @@ long do_fork(unsigned long clone_flags, + if (clone_flags & CLONE_PARENT_SETTID) + put_user(nr, parent_tidptr); + ++ gr_handle_brute_check(); ++ + if (clone_flags & CLONE_VFORK) { + p->vfork_done = &vfork; + init_completion(&vfork); +@@ -1700,7 +1753,7 @@ static int unshare_fs(unsigned long unshare_flags, struct fs_struct **new_fsp) + return 0; + + /* don't need lock here; in the worst case we'll do useless copy */ +- if (fs->users == 1) ++ if (atomic_read(&fs->users) == 1) + return 0; + + *new_fsp = copy_fs_struct(fs); +@@ -1789,7 +1842,8 @@ SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags) + fs = current->fs; + spin_lock(&fs->lock); + current->fs = new_fs; +- if (--fs->users) ++ gr_set_chroot_entries(current, ¤t->fs->root); ++ if (atomic_dec_return(&fs->users)) + new_fs = NULL; + else + new_fs = fs; +diff --git a/kernel/futex.c b/kernel/futex.c +index e2b0fb9..db818ac 100644 +--- a/kernel/futex.c ++++ b/kernel/futex.c +@@ -54,6 +54,7 @@ + #include <linux/mount.h> + #include <linux/pagemap.h> + #include <linux/syscalls.h> ++#include <linux/ptrace.h> + #include <linux/signal.h> + #include <linux/export.h> + #include <linux/magic.h> +@@ -239,6 +240,11 @@ get_futex_key(u32 __user *uaddr, int fshared, union futex_key *key, int rw) + struct page *page, *page_head; + int err, ro = 0; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && address >= SEGMEXEC_TASK_SIZE) ++ return -EFAULT; ++#endif ++ + /* + * The futex address must be "naturally" aligned. + */ +@@ -2711,6 +2717,7 @@ static int __init futex_init(void) + { + u32 curval; + int i; ++ mm_segment_t oldfs; + + /* + * This will fail and we want it. Some arch implementations do +@@ -2722,8 +2729,11 @@ static int __init futex_init(void) + * implementation, the non-functional ones will return + * -ENOSYS. + */ ++ oldfs = get_fs(); ++ set_fs(USER_DS); + if (cmpxchg_futex_value_locked(&curval, NULL, 0, 0) == -EFAULT) + futex_cmpxchg_enabled = 1; ++ set_fs(oldfs); + + for (i = 0; i < ARRAY_SIZE(futex_queues); i++) { + plist_head_init(&futex_queues[i].chain); +diff --git a/kernel/gcov/base.c b/kernel/gcov/base.c +index 9b22d03..6295b62 100644 +--- a/kernel/gcov/base.c ++++ b/kernel/gcov/base.c +@@ -102,11 +102,6 @@ void gcov_enable_events(void) + } + + #ifdef CONFIG_MODULES +-static inline int within(void *addr, void *start, unsigned long size) +-{ +- return ((addr >= start) && (addr < start + size)); +-} +- + /* Update list and generate events when modules are unloaded. */ + static int gcov_module_notifier(struct notifier_block *nb, unsigned long event, + void *data) +@@ -121,7 +116,7 @@ static int gcov_module_notifier(struct notifier_block *nb, unsigned long event, + prev = NULL; + /* Remove entries located in module from linked list. */ + for (info = gcov_info_head; info; info = info->next) { +- if (within(info, mod->module_core, mod->core_size)) { ++ if (within_module_core_rw((unsigned long)info, mod)) { + if (prev) + prev->next = info->next; + else +diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c +index ae34bf5..4e2f3d0 100644 +--- a/kernel/hrtimer.c ++++ b/kernel/hrtimer.c +@@ -1393,7 +1393,7 @@ void hrtimer_peek_ahead_timers(void) + local_irq_restore(flags); + } + +-static void run_hrtimer_softirq(struct softirq_action *h) ++static void run_hrtimer_softirq(void) + { + hrtimer_peek_ahead_timers(); + } +diff --git a/kernel/jump_label.c b/kernel/jump_label.c +index 4304919..408c4c0 100644 +--- a/kernel/jump_label.c ++++ b/kernel/jump_label.c +@@ -13,6 +13,7 @@ + #include <linux/sort.h> + #include <linux/err.h> + #include <linux/static_key.h> ++#include <linux/mm.h> + + #ifdef HAVE_JUMP_LABEL + +@@ -50,7 +51,9 @@ jump_label_sort_entries(struct jump_entry *start, struct jump_entry *stop) + + size = (((unsigned long)stop - (unsigned long)start) + / sizeof(struct jump_entry)); ++ pax_open_kernel(); + sort(start, size, sizeof(struct jump_entry), jump_label_cmp, NULL); ++ pax_close_kernel(); + } + + static void jump_label_update(struct static_key *key, int enable); +@@ -356,10 +359,12 @@ static void jump_label_invalidate_module_init(struct module *mod) + struct jump_entry *iter_stop = iter_start + mod->num_jump_entries; + struct jump_entry *iter; + ++ pax_open_kernel(); + for (iter = iter_start; iter < iter_stop; iter++) { + if (within_module_init(iter->code, mod)) + iter->code = 0; + } ++ pax_close_kernel(); + } + + static int +diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c +index 079f1d3..a407562 100644 +--- a/kernel/kallsyms.c ++++ b/kernel/kallsyms.c +@@ -11,6 +11,9 @@ + * Changed the compression method from stem compression to "table lookup" + * compression (see scripts/kallsyms.c for a more complete description) + */ ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++#define __INCLUDED_BY_HIDESYM 1 ++#endif + #include <linux/kallsyms.h> + #include <linux/module.h> + #include <linux/init.h> +@@ -53,12 +56,33 @@ extern const unsigned long kallsyms_markers[] __attribute__((weak)); + + static inline int is_kernel_inittext(unsigned long addr) + { ++ if (system_state != SYSTEM_BOOTING) ++ return 0; ++ + if (addr >= (unsigned long)_sinittext + && addr <= (unsigned long)_einittext) + return 1; + return 0; + } + ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++#ifdef CONFIG_MODULES ++static inline int is_module_text(unsigned long addr) ++{ ++ if ((unsigned long)MODULES_EXEC_VADDR <= addr && addr <= (unsigned long)MODULES_EXEC_END) ++ return 1; ++ ++ addr = ktla_ktva(addr); ++ return (unsigned long)MODULES_EXEC_VADDR <= addr && addr <= (unsigned long)MODULES_EXEC_END; ++} ++#else ++static inline int is_module_text(unsigned long addr) ++{ ++ return 0; ++} ++#endif ++#endif ++ + static inline int is_kernel_text(unsigned long addr) + { + if ((addr >= (unsigned long)_stext && addr <= (unsigned long)_etext) || +@@ -69,13 +93,28 @@ static inline int is_kernel_text(unsigned long addr) + + static inline int is_kernel(unsigned long addr) + { ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++ if (is_kernel_text(addr) || is_kernel_inittext(addr)) ++ return 1; ++ ++ if (ktla_ktva((unsigned long)_text) <= addr && addr < (unsigned long)_end) ++#else + if (addr >= (unsigned long)_stext && addr <= (unsigned long)_end) ++#endif ++ + return 1; + return in_gate_area_no_mm(addr); + } + + static int is_ksym_addr(unsigned long addr) + { ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++ if (is_module_text(addr)) ++ return 0; ++#endif ++ + if (all_var) + return is_kernel(addr); + +@@ -454,7 +493,6 @@ static unsigned long get_ksymbol_core(struct kallsym_iter *iter) + + static void reset_iter(struct kallsym_iter *iter, loff_t new_pos) + { +- iter->name[0] = '\0'; + iter->nameoff = get_symbol_offset(new_pos); + iter->pos = new_pos; + } +@@ -502,6 +540,11 @@ static int s_show(struct seq_file *m, void *p) + { + struct kallsym_iter *iter = m->private; + ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ if (current_uid()) ++ return 0; ++#endif ++ + /* Some debugging symbols have no name. Ignore them. */ + if (!iter->name[0]) + return 0; +@@ -540,7 +583,7 @@ static int kallsyms_open(struct inode *inode, struct file *file) + struct kallsym_iter *iter; + int ret; + +- iter = kmalloc(sizeof(*iter), GFP_KERNEL); ++ iter = kzalloc(sizeof(*iter), GFP_KERNEL); + if (!iter) + return -ENOMEM; + reset_iter(iter, 0); +diff --git a/kernel/kexec.c b/kernel/kexec.c +index 4e2e472..cd0c7ae 100644 +--- a/kernel/kexec.c ++++ b/kernel/kexec.c +@@ -1046,7 +1046,8 @@ asmlinkage long compat_sys_kexec_load(unsigned long entry, + unsigned long flags) + { + struct compat_kexec_segment in; +- struct kexec_segment out, __user *ksegments; ++ struct kexec_segment out; ++ struct kexec_segment __user *ksegments; + unsigned long i, result; + + /* Don't allow clients that don't understand the native +diff --git a/kernel/kmod.c b/kernel/kmod.c +index 05698a7..a4c1e3a 100644 +--- a/kernel/kmod.c ++++ b/kernel/kmod.c +@@ -66,7 +66,7 @@ static void free_modprobe_argv(struct subprocess_info *info) + kfree(info->argv); + } + +-static int call_modprobe(char *module_name, int wait) ++static int call_modprobe(char *module_name, char *module_param, int wait) + { + static char *envp[] = { + "HOME=/", +@@ -75,7 +75,7 @@ static int call_modprobe(char *module_name, int wait) + NULL + }; + +- char **argv = kmalloc(sizeof(char *[5]), GFP_KERNEL); ++ char **argv = kmalloc(sizeof(char *[6]), GFP_KERNEL); + if (!argv) + goto out; + +@@ -87,7 +87,8 @@ static int call_modprobe(char *module_name, int wait) + argv[1] = "-q"; + argv[2] = "--"; + argv[3] = module_name; /* check free_modprobe_argv() */ +- argv[4] = NULL; ++ argv[4] = module_param; ++ argv[5] = NULL; + + return call_usermodehelper_fns(modprobe_path, argv, envp, + wait | UMH_KILLABLE, NULL, free_modprobe_argv, NULL); +@@ -112,9 +113,8 @@ out: + * If module auto-loading support is disabled then this function + * becomes a no-operation. + */ +-int __request_module(bool wait, const char *fmt, ...) ++static int ____request_module(bool wait, char *module_param, const char *fmt, va_list ap) + { +- va_list args; + char module_name[MODULE_NAME_LEN]; + unsigned int max_modprobes; + int ret; +@@ -122,9 +122,7 @@ int __request_module(bool wait, const char *fmt, ...) + #define MAX_KMOD_CONCURRENT 50 /* Completely arbitrary value - KAO */ + static int kmod_loop_msg; + +- va_start(args, fmt); +- ret = vsnprintf(module_name, MODULE_NAME_LEN, fmt, args); +- va_end(args); ++ ret = vsnprintf(module_name, MODULE_NAME_LEN, fmt, ap); + if (ret >= MODULE_NAME_LEN) + return -ENAMETOOLONG; + +@@ -132,6 +130,20 @@ int __request_module(bool wait, const char *fmt, ...) + if (ret) + return ret; + ++#ifdef CONFIG_GRKERNSEC_MODHARDEN ++ if (!current_uid()) { ++ /* hack to workaround consolekit/udisks stupidity */ ++ read_lock(&tasklist_lock); ++ if (!strcmp(current->comm, "mount") && ++ current->real_parent && !strncmp(current->real_parent->comm, "udisk", 5)) { ++ read_unlock(&tasklist_lock); ++ printk(KERN_ALERT "grsec: denied attempt to auto-load fs module %.64s by udisks\n", module_name); ++ return -EPERM; ++ } ++ read_unlock(&tasklist_lock); ++ } ++#endif ++ + /* If modprobe needs a service that is in a module, we get a recursive + * loop. Limit the number of running kmod threads to max_threads/2 or + * MAX_KMOD_CONCURRENT, whichever is the smaller. A cleaner method +@@ -160,11 +172,52 @@ int __request_module(bool wait, const char *fmt, ...) + + trace_module_request(module_name, wait, _RET_IP_); + +- ret = call_modprobe(module_name, wait ? UMH_WAIT_PROC : UMH_WAIT_EXEC); ++ ret = call_modprobe(module_name, module_param, wait ? UMH_WAIT_PROC : UMH_WAIT_EXEC); + + atomic_dec(&kmod_concurrent); + return ret; + } ++ ++int ___request_module(bool wait, char *module_param, const char *fmt, ...) ++{ ++ va_list args; ++ int ret; ++ ++ va_start(args, fmt); ++ ret = ____request_module(wait, module_param, fmt, args); ++ va_end(args); ++ ++ return ret; ++} ++ ++int __request_module(bool wait, const char *fmt, ...) ++{ ++ va_list args; ++ int ret; ++ ++#ifdef CONFIG_GRKERNSEC_MODHARDEN ++ if (current_uid()) { ++ char module_param[MODULE_NAME_LEN]; ++ ++ memset(module_param, 0, sizeof(module_param)); ++ ++ snprintf(module_param, sizeof(module_param) - 1, "grsec_modharden_normal%u_", current_uid()); ++ ++ va_start(args, fmt); ++ ret = ____request_module(wait, module_param, fmt, args); ++ va_end(args); ++ ++ return ret; ++ } ++#endif ++ ++ va_start(args, fmt); ++ ret = ____request_module(wait, NULL, fmt, args); ++ va_end(args); ++ ++ return ret; ++} ++ + EXPORT_SYMBOL(__request_module); + #endif /* CONFIG_MODULES */ + +@@ -267,7 +320,7 @@ static int wait_for_helper(void *data) + * + * Thus the __user pointer cast is valid here. + */ +- sys_wait4(pid, (int __user *)&ret, 0, NULL); ++ sys_wait4(pid, (int __force_user *)&ret, 0, NULL); + + /* + * If ret is 0, either ____call_usermodehelper failed and the +diff --git a/kernel/kprobes.c b/kernel/kprobes.c +index c62b854..cb67968 100644 +--- a/kernel/kprobes.c ++++ b/kernel/kprobes.c +@@ -185,7 +185,7 @@ static kprobe_opcode_t __kprobes *__get_insn_slot(struct kprobe_insn_cache *c) + * kernel image and loaded module images reside. This is required + * so x86_64 can correctly handle the %rip-relative fixups. + */ +- kip->insns = module_alloc(PAGE_SIZE); ++ kip->insns = module_alloc_exec(PAGE_SIZE); + if (!kip->insns) { + kfree(kip); + return NULL; +@@ -225,7 +225,7 @@ static int __kprobes collect_one_slot(struct kprobe_insn_page *kip, int idx) + */ + if (!list_is_singular(&kip->list)) { + list_del(&kip->list); +- module_free(NULL, kip->insns); ++ module_free_exec(NULL, kip->insns); + kfree(kip); + } + return 1; +@@ -1955,7 +1955,7 @@ static int __init init_kprobes(void) + { + int i, err = 0; + unsigned long offset = 0, size = 0; +- char *modname, namebuf[128]; ++ char *modname, namebuf[KSYM_NAME_LEN]; + const char *symbol_name; + void *addr; + struct kprobe_blackpoint *kb; +@@ -2081,7 +2081,7 @@ static int __kprobes show_kprobe_addr(struct seq_file *pi, void *v) + const char *sym = NULL; + unsigned int i = *(loff_t *) v; + unsigned long offset = 0; +- char *modname, namebuf[128]; ++ char *modname, namebuf[KSYM_NAME_LEN]; + + head = &kprobe_table[i]; + preempt_disable(); +diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c +index 4e316e1..5501eef 100644 +--- a/kernel/ksysfs.c ++++ b/kernel/ksysfs.c +@@ -47,6 +47,8 @@ static ssize_t uevent_helper_store(struct kobject *kobj, + { + if (count+1 > UEVENT_HELPER_PATH_LEN) + return -ENOENT; ++ if (!capable(CAP_SYS_ADMIN)) ++ return -EPERM; + memcpy(uevent_helper, buf, count); + uevent_helper[count] = '\0'; + if (count && uevent_helper[count-1] == '\n') +diff --git a/kernel/lockdep.c b/kernel/lockdep.c +index ea9ee45..67ebc8f 100644 +--- a/kernel/lockdep.c ++++ b/kernel/lockdep.c +@@ -590,6 +590,10 @@ static int static_obj(void *obj) + end = (unsigned long) &_end, + addr = (unsigned long) obj; + ++#ifdef CONFIG_PAX_KERNEXEC ++ start = ktla_ktva(start); ++#endif ++ + /* + * static variable? + */ +@@ -730,6 +734,7 @@ register_lock_class(struct lockdep_map *lock, unsigned int subclass, int force) + if (!static_obj(lock->key)) { + debug_locks_off(); + printk("INFO: trying to register non-static key.\n"); ++ printk("lock:%pS key:%pS.\n", lock, lock->key); + printk("the code is fine but needs lockdep annotation.\n"); + printk("turning off the locking correctness validator.\n"); + dump_stack(); +@@ -3042,7 +3047,7 @@ static int __lock_acquire(struct lockdep_map *lock, unsigned int subclass, + if (!class) + return 0; + } +- atomic_inc((atomic_t *)&class->ops); ++ atomic_inc_unchecked((atomic_unchecked_t *)&class->ops); + if (very_verbose(class)) { + printk("\nacquire class [%p] %s", class->key, class->name); + if (class->name_version > 1) +diff --git a/kernel/lockdep_proc.c b/kernel/lockdep_proc.c +index 91c32a0..b2c71c5 100644 +--- a/kernel/lockdep_proc.c ++++ b/kernel/lockdep_proc.c +@@ -39,7 +39,7 @@ static void l_stop(struct seq_file *m, void *v) + + static void print_name(struct seq_file *m, struct lock_class *class) + { +- char str[128]; ++ char str[KSYM_NAME_LEN]; + const char *name = class->name; + + if (!name) { +diff --git a/kernel/module.c b/kernel/module.c +index 78ac6ec..e87db0e 100644 +--- a/kernel/module.c ++++ b/kernel/module.c +@@ -58,6 +58,7 @@ + #include <linux/jump_label.h> + #include <linux/pfn.h> + #include <linux/bsearch.h> ++#include <linux/grsecurity.h> + + #define CREATE_TRACE_POINTS + #include <trace/events/module.h> +@@ -114,7 +115,8 @@ static BLOCKING_NOTIFIER_HEAD(module_notify_list); + + /* Bounds of module allocation, for speeding __module_address. + * Protected by module_mutex. */ +-static unsigned long module_addr_min = -1UL, module_addr_max = 0; ++static unsigned long module_addr_min_rw = -1UL, module_addr_max_rw = 0; ++static unsigned long module_addr_min_rx = -1UL, module_addr_max_rx = 0; + + int register_module_notifier(struct notifier_block * nb) + { +@@ -278,7 +280,7 @@ bool each_symbol_section(bool (*fn)(const struct symsearch *arr, + return true; + + list_for_each_entry_rcu(mod, &modules, list) { +- struct symsearch arr[] = { ++ struct symsearch modarr[] = { + { mod->syms, mod->syms + mod->num_syms, mod->crcs, + NOT_GPL_ONLY, false }, + { mod->gpl_syms, mod->gpl_syms + mod->num_gpl_syms, +@@ -300,7 +302,7 @@ bool each_symbol_section(bool (*fn)(const struct symsearch *arr, + #endif + }; + +- if (each_symbol_in_section(arr, ARRAY_SIZE(arr), mod, fn, data)) ++ if (each_symbol_in_section(modarr, ARRAY_SIZE(modarr), mod, fn, data)) + return true; + } + return false; +@@ -432,7 +434,7 @@ static inline void __percpu *mod_percpu(struct module *mod) + static int percpu_modalloc(struct module *mod, + unsigned long size, unsigned long align) + { +- if (align > PAGE_SIZE) { ++ if (align-1 >= PAGE_SIZE) { + printk(KERN_WARNING "%s: per-cpu alignment %li > %li\n", + mod->name, align, PAGE_SIZE); + align = PAGE_SIZE; +@@ -1032,7 +1034,7 @@ struct module_attribute module_uevent = + static ssize_t show_coresize(struct module_attribute *mattr, + struct module_kobject *mk, char *buffer) + { +- return sprintf(buffer, "%u\n", mk->mod->core_size); ++ return sprintf(buffer, "%u\n", mk->mod->core_size_rx + mk->mod->core_size_rw); + } + + static struct module_attribute modinfo_coresize = +@@ -1041,7 +1043,7 @@ static struct module_attribute modinfo_coresize = + static ssize_t show_initsize(struct module_attribute *mattr, + struct module_kobject *mk, char *buffer) + { +- return sprintf(buffer, "%u\n", mk->mod->init_size); ++ return sprintf(buffer, "%u\n", mk->mod->init_size_rx + mk->mod->init_size_rw); + } + + static struct module_attribute modinfo_initsize = +@@ -1255,7 +1257,7 @@ resolve_symbol_wait(struct module *mod, + */ + #ifdef CONFIG_SYSFS + +-#ifdef CONFIG_KALLSYMS ++#if defined(CONFIG_KALLSYMS) && !defined(CONFIG_GRKERNSEC_HIDESYM) + static inline bool sect_empty(const Elf_Shdr *sect) + { + return !(sect->sh_flags & SHF_ALLOC) || sect->sh_size == 0; +@@ -1721,21 +1723,21 @@ static void set_section_ro_nx(void *base, + + static void unset_module_core_ro_nx(struct module *mod) + { +- set_page_attributes(mod->module_core + mod->core_text_size, +- mod->module_core + mod->core_size, ++ set_page_attributes(mod->module_core_rw, ++ mod->module_core_rw + mod->core_size_rw, + set_memory_x); +- set_page_attributes(mod->module_core, +- mod->module_core + mod->core_ro_size, ++ set_page_attributes(mod->module_core_rx, ++ mod->module_core_rx + mod->core_size_rx, + set_memory_rw); + } + + static void unset_module_init_ro_nx(struct module *mod) + { +- set_page_attributes(mod->module_init + mod->init_text_size, +- mod->module_init + mod->init_size, ++ set_page_attributes(mod->module_init_rw, ++ mod->module_init_rw + mod->init_size_rw, + set_memory_x); +- set_page_attributes(mod->module_init, +- mod->module_init + mod->init_ro_size, ++ set_page_attributes(mod->module_init_rx, ++ mod->module_init_rx + mod->init_size_rx, + set_memory_rw); + } + +@@ -1746,14 +1748,14 @@ void set_all_modules_text_rw(void) + + mutex_lock(&module_mutex); + list_for_each_entry_rcu(mod, &modules, list) { +- if ((mod->module_core) && (mod->core_text_size)) { +- set_page_attributes(mod->module_core, +- mod->module_core + mod->core_text_size, ++ if ((mod->module_core_rx) && (mod->core_size_rx)) { ++ set_page_attributes(mod->module_core_rx, ++ mod->module_core_rx + mod->core_size_rx, + set_memory_rw); + } +- if ((mod->module_init) && (mod->init_text_size)) { +- set_page_attributes(mod->module_init, +- mod->module_init + mod->init_text_size, ++ if ((mod->module_init_rx) && (mod->init_size_rx)) { ++ set_page_attributes(mod->module_init_rx, ++ mod->module_init_rx + mod->init_size_rx, + set_memory_rw); + } + } +@@ -1767,14 +1769,14 @@ void set_all_modules_text_ro(void) + + mutex_lock(&module_mutex); + list_for_each_entry_rcu(mod, &modules, list) { +- if ((mod->module_core) && (mod->core_text_size)) { +- set_page_attributes(mod->module_core, +- mod->module_core + mod->core_text_size, ++ if ((mod->module_core_rx) && (mod->core_size_rx)) { ++ set_page_attributes(mod->module_core_rx, ++ mod->module_core_rx + mod->core_size_rx, + set_memory_ro); + } +- if ((mod->module_init) && (mod->init_text_size)) { +- set_page_attributes(mod->module_init, +- mod->module_init + mod->init_text_size, ++ if ((mod->module_init_rx) && (mod->init_size_rx)) { ++ set_page_attributes(mod->module_init_rx, ++ mod->module_init_rx + mod->init_size_rx, + set_memory_ro); + } + } +@@ -1820,16 +1822,19 @@ static void free_module(struct module *mod) + + /* This may be NULL, but that's OK */ + unset_module_init_ro_nx(mod); +- module_free(mod, mod->module_init); ++ module_free(mod, mod->module_init_rw); ++ module_free_exec(mod, mod->module_init_rx); + kfree(mod->args); + percpu_modfree(mod); + + /* Free lock-classes: */ +- lockdep_free_key_range(mod->module_core, mod->core_size); ++ lockdep_free_key_range(mod->module_core_rx, mod->core_size_rx); ++ lockdep_free_key_range(mod->module_core_rw, mod->core_size_rw); + + /* Finally, free the core (containing the module structure) */ + unset_module_core_ro_nx(mod); +- module_free(mod, mod->module_core); ++ module_free_exec(mod, mod->module_core_rx); ++ module_free(mod, mod->module_core_rw); + + #ifdef CONFIG_MPU + update_protections(current->mm); +@@ -1899,9 +1904,31 @@ static int simplify_symbols(struct module *mod, const struct load_info *info) + int ret = 0; + const struct kernel_symbol *ksym; + ++#ifdef CONFIG_GRKERNSEC_MODHARDEN ++ int is_fs_load = 0; ++ int register_filesystem_found = 0; ++ char *p; ++ ++ p = strstr(mod->args, "grsec_modharden_fs"); ++ if (p) { ++ char *endptr = p + strlen("grsec_modharden_fs"); ++ /* copy \0 as well */ ++ memmove(p, endptr, strlen(mod->args) - (unsigned int)(endptr - mod->args) + 1); ++ is_fs_load = 1; ++ } ++#endif ++ + for (i = 1; i < symsec->sh_size / sizeof(Elf_Sym); i++) { + const char *name = info->strtab + sym[i].st_name; + ++#ifdef CONFIG_GRKERNSEC_MODHARDEN ++ /* it's a real shame this will never get ripped and copied ++ upstream! ;( ++ */ ++ if (is_fs_load && !strcmp(name, "register_filesystem")) ++ register_filesystem_found = 1; ++#endif ++ + switch (sym[i].st_shndx) { + case SHN_COMMON: + /* We compiled with -fno-common. These are not +@@ -1922,7 +1949,9 @@ static int simplify_symbols(struct module *mod, const struct load_info *info) + ksym = resolve_symbol_wait(mod, info, name); + /* Ok if resolved. */ + if (ksym && !IS_ERR(ksym)) { ++ pax_open_kernel(); + sym[i].st_value = ksym->value; ++ pax_close_kernel(); + break; + } + +@@ -1941,11 +1970,20 @@ static int simplify_symbols(struct module *mod, const struct load_info *info) + secbase = (unsigned long)mod_percpu(mod); + else + secbase = info->sechdrs[sym[i].st_shndx].sh_addr; ++ pax_open_kernel(); + sym[i].st_value += secbase; ++ pax_close_kernel(); + break; + } + } + ++#ifdef CONFIG_GRKERNSEC_MODHARDEN ++ if (is_fs_load && !register_filesystem_found) { ++ printk(KERN_ALERT "grsec: Denied attempt to load non-fs module %.64s through mount\n", mod->name); ++ ret = -EPERM; ++ } ++#endif ++ + return ret; + } + +@@ -2049,22 +2087,12 @@ static void layout_sections(struct module *mod, struct load_info *info) + || s->sh_entsize != ~0UL + || strstarts(sname, ".init")) + continue; +- s->sh_entsize = get_offset(mod, &mod->core_size, s, i); ++ if ((s->sh_flags & SHF_WRITE) || !(s->sh_flags & SHF_ALLOC)) ++ s->sh_entsize = get_offset(mod, &mod->core_size_rw, s, i); ++ else ++ s->sh_entsize = get_offset(mod, &mod->core_size_rx, s, i); + pr_debug("\t%s\n", sname); + } +- switch (m) { +- case 0: /* executable */ +- mod->core_size = debug_align(mod->core_size); +- mod->core_text_size = mod->core_size; +- break; +- case 1: /* RO: text and ro-data */ +- mod->core_size = debug_align(mod->core_size); +- mod->core_ro_size = mod->core_size; +- break; +- case 3: /* whole core */ +- mod->core_size = debug_align(mod->core_size); +- break; +- } + } + + pr_debug("Init section allocation order:\n"); +@@ -2078,23 +2106,13 @@ static void layout_sections(struct module *mod, struct load_info *info) + || s->sh_entsize != ~0UL + || !strstarts(sname, ".init")) + continue; +- s->sh_entsize = (get_offset(mod, &mod->init_size, s, i) +- | INIT_OFFSET_MASK); ++ if ((s->sh_flags & SHF_WRITE) || !(s->sh_flags & SHF_ALLOC)) ++ s->sh_entsize = get_offset(mod, &mod->init_size_rw, s, i); ++ else ++ s->sh_entsize = get_offset(mod, &mod->init_size_rx, s, i); ++ s->sh_entsize |= INIT_OFFSET_MASK; + pr_debug("\t%s\n", sname); + } +- switch (m) { +- case 0: /* executable */ +- mod->init_size = debug_align(mod->init_size); +- mod->init_text_size = mod->init_size; +- break; +- case 1: /* RO: text and ro-data */ +- mod->init_size = debug_align(mod->init_size); +- mod->init_ro_size = mod->init_size; +- break; +- case 3: /* whole init */ +- mod->init_size = debug_align(mod->init_size); +- break; +- } + } + } + +@@ -2266,7 +2284,7 @@ static void layout_symtab(struct module *mod, struct load_info *info) + + /* Put symbol section at end of init part of module. */ + symsect->sh_flags |= SHF_ALLOC; +- symsect->sh_entsize = get_offset(mod, &mod->init_size, symsect, ++ symsect->sh_entsize = get_offset(mod, &mod->init_size_rx, symsect, + info->index.sym) | INIT_OFFSET_MASK; + pr_debug("\t%s\n", info->secstrings + symsect->sh_name); + +@@ -2281,13 +2299,13 @@ static void layout_symtab(struct module *mod, struct load_info *info) + } + + /* Append room for core symbols at end of core part. */ +- info->symoffs = ALIGN(mod->core_size, symsect->sh_addralign ?: 1); +- info->stroffs = mod->core_size = info->symoffs + ndst * sizeof(Elf_Sym); +- mod->core_size += strtab_size; ++ info->symoffs = ALIGN(mod->core_size_rx, symsect->sh_addralign ?: 1); ++ info->stroffs = mod->core_size_rx = info->symoffs + ndst * sizeof(Elf_Sym); ++ mod->core_size_rx += strtab_size; + + /* Put string table section at end of init part of module. */ + strsect->sh_flags |= SHF_ALLOC; +- strsect->sh_entsize = get_offset(mod, &mod->init_size, strsect, ++ strsect->sh_entsize = get_offset(mod, &mod->init_size_rx, strsect, + info->index.str) | INIT_OFFSET_MASK; + pr_debug("\t%s\n", info->secstrings + strsect->sh_name); + } +@@ -2305,12 +2323,14 @@ static void add_kallsyms(struct module *mod, const struct load_info *info) + /* Make sure we get permanent strtab: don't use info->strtab. */ + mod->strtab = (void *)info->sechdrs[info->index.str].sh_addr; + ++ pax_open_kernel(); ++ + /* Set types up while we still have access to sections. */ + for (i = 0; i < mod->num_symtab; i++) + mod->symtab[i].st_info = elf_type(&mod->symtab[i], info); + +- mod->core_symtab = dst = mod->module_core + info->symoffs; +- mod->core_strtab = s = mod->module_core + info->stroffs; ++ mod->core_symtab = dst = mod->module_core_rx + info->symoffs; ++ mod->core_strtab = s = mod->module_core_rx + info->stroffs; + src = mod->symtab; + *dst = *src; + *s++ = 0; +@@ -2323,6 +2343,8 @@ static void add_kallsyms(struct module *mod, const struct load_info *info) + s += strlcpy(s, &mod->strtab[src->st_name], KSYM_NAME_LEN) + 1; + } + mod->core_num_syms = ndst; ++ ++ pax_close_kernel(); + } + #else + static inline void layout_symtab(struct module *mod, struct load_info *info) +@@ -2356,17 +2378,33 @@ void * __weak module_alloc(unsigned long size) + return size == 0 ? NULL : vmalloc_exec(size); + } + +-static void *module_alloc_update_bounds(unsigned long size) ++static void *module_alloc_update_bounds_rw(unsigned long size) + { + void *ret = module_alloc(size); + + if (ret) { + mutex_lock(&module_mutex); + /* Update module bounds. */ +- if ((unsigned long)ret < module_addr_min) +- module_addr_min = (unsigned long)ret; +- if ((unsigned long)ret + size > module_addr_max) +- module_addr_max = (unsigned long)ret + size; ++ if ((unsigned long)ret < module_addr_min_rw) ++ module_addr_min_rw = (unsigned long)ret; ++ if ((unsigned long)ret + size > module_addr_max_rw) ++ module_addr_max_rw = (unsigned long)ret + size; ++ mutex_unlock(&module_mutex); ++ } ++ return ret; ++} ++ ++static void *module_alloc_update_bounds_rx(unsigned long size) ++{ ++ void *ret = module_alloc_exec(size); ++ ++ if (ret) { ++ mutex_lock(&module_mutex); ++ /* Update module bounds. */ ++ if ((unsigned long)ret < module_addr_min_rx) ++ module_addr_min_rx = (unsigned long)ret; ++ if ((unsigned long)ret + size > module_addr_max_rx) ++ module_addr_max_rx = (unsigned long)ret + size; + mutex_unlock(&module_mutex); + } + return ret; +@@ -2543,8 +2581,14 @@ static struct module *setup_load_info(struct load_info *info) + static int check_modinfo(struct module *mod, struct load_info *info) + { + const char *modmagic = get_modinfo(info, "vermagic"); ++ const char *license = get_modinfo(info, "license"); + int err; + ++#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR ++ if (!license || !license_is_gpl_compatible(license)) ++ return -ENOEXEC; ++#endif ++ + /* This is allowed: modprobe --force will invalidate it. */ + if (!modmagic) { + err = try_to_force_load(mod, "bad vermagic"); +@@ -2567,7 +2611,7 @@ static int check_modinfo(struct module *mod, struct load_info *info) + } + + /* Set up license info based on the info section */ +- set_license(mod, get_modinfo(info, "license")); ++ set_license(mod, license); + + return 0; + } +@@ -2661,7 +2705,7 @@ static int move_module(struct module *mod, struct load_info *info) + void *ptr; + + /* Do the allocs. */ +- ptr = module_alloc_update_bounds(mod->core_size); ++ ptr = module_alloc_update_bounds_rw(mod->core_size_rw); + /* + * The pointer to this block is stored in the module structure + * which is inside the block. Just mark it as not being a +@@ -2671,23 +2715,50 @@ static int move_module(struct module *mod, struct load_info *info) + if (!ptr) + return -ENOMEM; + +- memset(ptr, 0, mod->core_size); +- mod->module_core = ptr; ++ memset(ptr, 0, mod->core_size_rw); ++ mod->module_core_rw = ptr; + +- ptr = module_alloc_update_bounds(mod->init_size); ++ ptr = module_alloc_update_bounds_rw(mod->init_size_rw); + /* + * The pointer to this block is stored in the module structure + * which is inside the block. This block doesn't need to be + * scanned as it contains data and code that will be freed + * after the module is initialized. + */ +- kmemleak_ignore(ptr); +- if (!ptr && mod->init_size) { +- module_free(mod, mod->module_core); ++ kmemleak_not_leak(ptr); ++ if (!ptr && mod->init_size_rw) { ++ module_free(mod, mod->module_core_rw); + return -ENOMEM; + } +- memset(ptr, 0, mod->init_size); +- mod->module_init = ptr; ++ memset(ptr, 0, mod->init_size_rw); ++ mod->module_init_rw = ptr; ++ ++ ptr = module_alloc_update_bounds_rx(mod->core_size_rx); ++ kmemleak_not_leak(ptr); ++ if (!ptr) { ++ module_free(mod, mod->module_init_rw); ++ module_free(mod, mod->module_core_rw); ++ return -ENOMEM; ++ } ++ ++ pax_open_kernel(); ++ memset(ptr, 0, mod->core_size_rx); ++ pax_close_kernel(); ++ mod->module_core_rx = ptr; ++ ++ ptr = module_alloc_update_bounds_rx(mod->init_size_rx); ++ kmemleak_not_leak(ptr); ++ if (!ptr && mod->init_size_rx) { ++ module_free_exec(mod, mod->module_core_rx); ++ module_free(mod, mod->module_init_rw); ++ module_free(mod, mod->module_core_rw); ++ return -ENOMEM; ++ } ++ ++ pax_open_kernel(); ++ memset(ptr, 0, mod->init_size_rx); ++ pax_close_kernel(); ++ mod->module_init_rx = ptr; + + /* Transfer each section which specifies SHF_ALLOC */ + pr_debug("final section addresses:\n"); +@@ -2698,16 +2769,45 @@ static int move_module(struct module *mod, struct load_info *info) + if (!(shdr->sh_flags & SHF_ALLOC)) + continue; + +- if (shdr->sh_entsize & INIT_OFFSET_MASK) +- dest = mod->module_init +- + (shdr->sh_entsize & ~INIT_OFFSET_MASK); +- else +- dest = mod->module_core + shdr->sh_entsize; ++ if (shdr->sh_entsize & INIT_OFFSET_MASK) { ++ if ((shdr->sh_flags & SHF_WRITE) || !(shdr->sh_flags & SHF_ALLOC)) ++ dest = mod->module_init_rw ++ + (shdr->sh_entsize & ~INIT_OFFSET_MASK); ++ else ++ dest = mod->module_init_rx ++ + (shdr->sh_entsize & ~INIT_OFFSET_MASK); ++ } else { ++ if ((shdr->sh_flags & SHF_WRITE) || !(shdr->sh_flags & SHF_ALLOC)) ++ dest = mod->module_core_rw + shdr->sh_entsize; ++ else ++ dest = mod->module_core_rx + shdr->sh_entsize; ++ } ++ ++ if (shdr->sh_type != SHT_NOBITS) { ++ ++#ifdef CONFIG_PAX_KERNEXEC ++#ifdef CONFIG_X86_64 ++ if ((shdr->sh_flags & SHF_WRITE) && (shdr->sh_flags & SHF_EXECINSTR)) ++ set_memory_x((unsigned long)dest, (shdr->sh_size + PAGE_SIZE) >> PAGE_SHIFT); ++#endif ++ if (!(shdr->sh_flags & SHF_WRITE) && (shdr->sh_flags & SHF_ALLOC)) { ++ pax_open_kernel(); ++ memcpy(dest, (void *)shdr->sh_addr, shdr->sh_size); ++ pax_close_kernel(); ++ } else ++#endif + +- if (shdr->sh_type != SHT_NOBITS) + memcpy(dest, (void *)shdr->sh_addr, shdr->sh_size); ++ } + /* Update sh_addr to point to copy in image. */ +- shdr->sh_addr = (unsigned long)dest; ++ ++#ifdef CONFIG_PAX_KERNEXEC ++ if (shdr->sh_flags & SHF_EXECINSTR) ++ shdr->sh_addr = ktva_ktla((unsigned long)dest); ++ else ++#endif ++ ++ shdr->sh_addr = (unsigned long)dest; + pr_debug("\t0x%lx %s\n", + (long)shdr->sh_addr, info->secstrings + shdr->sh_name); + } +@@ -2758,12 +2858,12 @@ static void flush_module_icache(const struct module *mod) + * Do it before processing of module parameters, so the module + * can provide parameter accessor functions of its own. + */ +- if (mod->module_init) +- flush_icache_range((unsigned long)mod->module_init, +- (unsigned long)mod->module_init +- + mod->init_size); +- flush_icache_range((unsigned long)mod->module_core, +- (unsigned long)mod->module_core + mod->core_size); ++ if (mod->module_init_rx) ++ flush_icache_range((unsigned long)mod->module_init_rx, ++ (unsigned long)mod->module_init_rx ++ + mod->init_size_rx); ++ flush_icache_range((unsigned long)mod->module_core_rx, ++ (unsigned long)mod->module_core_rx + mod->core_size_rx); + + set_fs(old_fs); + } +@@ -2833,8 +2933,10 @@ out: + static void module_deallocate(struct module *mod, struct load_info *info) + { + percpu_modfree(mod); +- module_free(mod, mod->module_init); +- module_free(mod, mod->module_core); ++ module_free_exec(mod, mod->module_init_rx); ++ module_free_exec(mod, mod->module_core_rx); ++ module_free(mod, mod->module_init_rw); ++ module_free(mod, mod->module_core_rw); + } + + int __weak module_finalize(const Elf_Ehdr *hdr, +@@ -2898,9 +3000,38 @@ static struct module *load_module(void __user *umod, + if (err) + goto free_unload; + ++ /* Now copy in args */ ++ mod->args = strndup_user(uargs, ~0UL >> 1); ++ if (IS_ERR(mod->args)) { ++ err = PTR_ERR(mod->args); ++ goto free_unload; ++ } ++ + /* Set up MODINFO_ATTR fields */ + setup_modinfo(mod, &info); + ++#ifdef CONFIG_GRKERNSEC_MODHARDEN ++ { ++ char *p, *p2; ++ ++ if (strstr(mod->args, "grsec_modharden_netdev")) { ++ printk(KERN_ALERT "grsec: denied auto-loading kernel module for a network device with CAP_SYS_MODULE (deprecated). Use CAP_NET_ADMIN and alias netdev-%.64s instead.", mod->name); ++ err = -EPERM; ++ goto free_modinfo; ++ } else if ((p = strstr(mod->args, "grsec_modharden_normal"))) { ++ p += strlen("grsec_modharden_normal"); ++ p2 = strstr(p, "_"); ++ if (p2) { ++ *p2 = '\0'; ++ printk(KERN_ALERT "grsec: denied kernel module auto-load of %.64s by uid %.9s\n", mod->name, p); ++ *p2 = '_'; ++ } ++ err = -EPERM; ++ goto free_modinfo; ++ } ++ } ++#endif ++ + /* Fix up syms, so that st_value is a pointer to location. */ + err = simplify_symbols(mod, &info); + if (err < 0) +@@ -2916,13 +3047,6 @@ static struct module *load_module(void __user *umod, + + flush_module_icache(mod); + +- /* Now copy in args */ +- mod->args = strndup_user(uargs, ~0UL >> 1); +- if (IS_ERR(mod->args)) { +- err = PTR_ERR(mod->args); +- goto free_arch_cleanup; +- } +- + /* Mark state as coming so strong_try_module_get() ignores us. */ + mod->state = MODULE_STATE_COMING; + +@@ -2980,11 +3104,10 @@ static struct module *load_module(void __user *umod, + unlock: + mutex_unlock(&module_mutex); + synchronize_sched(); +- kfree(mod->args); +- free_arch_cleanup: + module_arch_cleanup(mod); + free_modinfo: + free_modinfo(mod); ++ kfree(mod->args); + free_unload: + module_unload_free(mod); + free_module: +@@ -3025,16 +3148,16 @@ SYSCALL_DEFINE3(init_module, void __user *, umod, + MODULE_STATE_COMING, mod); + + /* Set RO and NX regions for core */ +- set_section_ro_nx(mod->module_core, +- mod->core_text_size, +- mod->core_ro_size, +- mod->core_size); ++ set_section_ro_nx(mod->module_core_rx, ++ mod->core_size_rx, ++ mod->core_size_rx, ++ mod->core_size_rx); + + /* Set RO and NX regions for init */ +- set_section_ro_nx(mod->module_init, +- mod->init_text_size, +- mod->init_ro_size, +- mod->init_size); ++ set_section_ro_nx(mod->module_init_rx, ++ mod->init_size_rx, ++ mod->init_size_rx, ++ mod->init_size_rx); + + do_mod_ctors(mod); + /* Start the module */ +@@ -3080,11 +3203,12 @@ SYSCALL_DEFINE3(init_module, void __user *, umod, + mod->strtab = mod->core_strtab; + #endif + unset_module_init_ro_nx(mod); +- module_free(mod, mod->module_init); +- mod->module_init = NULL; +- mod->init_size = 0; +- mod->init_ro_size = 0; +- mod->init_text_size = 0; ++ module_free(mod, mod->module_init_rw); ++ module_free_exec(mod, mod->module_init_rx); ++ mod->module_init_rw = NULL; ++ mod->module_init_rx = NULL; ++ mod->init_size_rw = 0; ++ mod->init_size_rx = 0; + mutex_unlock(&module_mutex); + + return 0; +@@ -3115,10 +3239,16 @@ static const char *get_ksymbol(struct module *mod, + unsigned long nextval; + + /* At worse, next value is at end of module */ +- if (within_module_init(addr, mod)) +- nextval = (unsigned long)mod->module_init+mod->init_text_size; ++ if (within_module_init_rx(addr, mod)) ++ nextval = (unsigned long)mod->module_init_rx+mod->init_size_rx; ++ else if (within_module_init_rw(addr, mod)) ++ nextval = (unsigned long)mod->module_init_rw+mod->init_size_rw; ++ else if (within_module_core_rx(addr, mod)) ++ nextval = (unsigned long)mod->module_core_rx+mod->core_size_rx; ++ else if (within_module_core_rw(addr, mod)) ++ nextval = (unsigned long)mod->module_core_rw+mod->core_size_rw; + else +- nextval = (unsigned long)mod->module_core+mod->core_text_size; ++ return NULL; + + /* Scan for closest preceding symbol, and next symbol. (ELF + starts real symbols at 1). */ +@@ -3353,7 +3483,7 @@ static int m_show(struct seq_file *m, void *p) + char buf[8]; + + seq_printf(m, "%s %u", +- mod->name, mod->init_size + mod->core_size); ++ mod->name, mod->init_size_rx + mod->init_size_rw + mod->core_size_rx + mod->core_size_rw); + print_unload_info(m, mod); + + /* Informative for users. */ +@@ -3362,7 +3492,7 @@ static int m_show(struct seq_file *m, void *p) + mod->state == MODULE_STATE_COMING ? "Loading": + "Live"); + /* Used by oprofile and other similar tools. */ +- seq_printf(m, " 0x%pK", mod->module_core); ++ seq_printf(m, " 0x%pK 0x%pK", mod->module_core_rx, mod->module_core_rw); + + /* Taints info */ + if (mod->taints) +@@ -3398,7 +3528,17 @@ static const struct file_operations proc_modules_operations = { + + static int __init proc_modules_init(void) + { ++#ifndef CONFIG_GRKERNSEC_HIDESYM ++#ifdef CONFIG_GRKERNSEC_PROC_USER ++ proc_create("modules", S_IRUSR, NULL, &proc_modules_operations); ++#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++ proc_create("modules", S_IRUSR | S_IRGRP, NULL, &proc_modules_operations); ++#else + proc_create("modules", 0, NULL, &proc_modules_operations); ++#endif ++#else ++ proc_create("modules", S_IRUSR, NULL, &proc_modules_operations); ++#endif + return 0; + } + module_init(proc_modules_init); +@@ -3457,12 +3597,12 @@ struct module *__module_address(unsigned long addr) + { + struct module *mod; + +- if (addr < module_addr_min || addr > module_addr_max) ++ if ((addr < module_addr_min_rx || addr > module_addr_max_rx) && ++ (addr < module_addr_min_rw || addr > module_addr_max_rw)) + return NULL; + + list_for_each_entry_rcu(mod, &modules, list) +- if (within_module_core(addr, mod) +- || within_module_init(addr, mod)) ++ if (within_module_init(addr, mod) || within_module_core(addr, mod)) + return mod; + return NULL; + } +@@ -3496,11 +3636,20 @@ bool is_module_text_address(unsigned long addr) + */ + struct module *__module_text_address(unsigned long addr) + { +- struct module *mod = __module_address(addr); ++ struct module *mod; ++ ++#ifdef CONFIG_X86_32 ++ addr = ktla_ktva(addr); ++#endif ++ ++ if (addr < module_addr_min_rx || addr > module_addr_max_rx) ++ return NULL; ++ ++ mod = __module_address(addr); ++ + if (mod) { + /* Make sure it's within the text section. */ +- if (!within(addr, mod->module_init, mod->init_text_size) +- && !within(addr, mod->module_core, mod->core_text_size)) ++ if (!within_module_init_rx(addr, mod) && !within_module_core_rx(addr, mod)) + mod = NULL; + } + return mod; +diff --git a/kernel/mutex-debug.c b/kernel/mutex-debug.c +index 7e3443f..b2a1e6b 100644 +--- a/kernel/mutex-debug.c ++++ b/kernel/mutex-debug.c +@@ -49,21 +49,21 @@ void debug_mutex_free_waiter(struct mutex_waiter *waiter) + } + + void debug_mutex_add_waiter(struct mutex *lock, struct mutex_waiter *waiter, +- struct thread_info *ti) ++ struct task_struct *task) + { + SMP_DEBUG_LOCKS_WARN_ON(!spin_is_locked(&lock->wait_lock)); + + /* Mark the current thread as blocked on the lock: */ +- ti->task->blocked_on = waiter; ++ task->blocked_on = waiter; + } + + void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter, +- struct thread_info *ti) ++ struct task_struct *task) + { + DEBUG_LOCKS_WARN_ON(list_empty(&waiter->list)); +- DEBUG_LOCKS_WARN_ON(waiter->task != ti->task); +- DEBUG_LOCKS_WARN_ON(ti->task->blocked_on != waiter); +- ti->task->blocked_on = NULL; ++ DEBUG_LOCKS_WARN_ON(waiter->task != task); ++ DEBUG_LOCKS_WARN_ON(task->blocked_on != waiter); ++ task->blocked_on = NULL; + + list_del_init(&waiter->list); + waiter->task = NULL; +diff --git a/kernel/mutex-debug.h b/kernel/mutex-debug.h +index 0799fd3..d06ae3b 100644 +--- a/kernel/mutex-debug.h ++++ b/kernel/mutex-debug.h +@@ -20,9 +20,9 @@ extern void debug_mutex_wake_waiter(struct mutex *lock, + extern void debug_mutex_free_waiter(struct mutex_waiter *waiter); + extern void debug_mutex_add_waiter(struct mutex *lock, + struct mutex_waiter *waiter, +- struct thread_info *ti); ++ struct task_struct *task); + extern void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter, +- struct thread_info *ti); ++ struct task_struct *task); + extern void debug_mutex_unlock(struct mutex *lock); + extern void debug_mutex_init(struct mutex *lock, const char *name, + struct lock_class_key *key); +diff --git a/kernel/mutex.c b/kernel/mutex.c +index a307cc9..27fd2e9 100644 +--- a/kernel/mutex.c ++++ b/kernel/mutex.c +@@ -198,7 +198,7 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass, + spin_lock_mutex(&lock->wait_lock, flags); + + debug_mutex_lock_common(lock, &waiter); +- debug_mutex_add_waiter(lock, &waiter, task_thread_info(task)); ++ debug_mutex_add_waiter(lock, &waiter, task); + + /* add waiting tasks to the end of the waitqueue (FIFO): */ + list_add_tail(&waiter.list, &lock->wait_list); +@@ -227,8 +227,7 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass, + * TASK_UNINTERRUPTIBLE case.) + */ + if (unlikely(signal_pending_state(state, task))) { +- mutex_remove_waiter(lock, &waiter, +- task_thread_info(task)); ++ mutex_remove_waiter(lock, &waiter, task); + mutex_release(&lock->dep_map, 1, ip); + spin_unlock_mutex(&lock->wait_lock, flags); + +@@ -247,7 +246,7 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass, + done: + lock_acquired(&lock->dep_map, ip); + /* got the lock - rejoice! */ +- mutex_remove_waiter(lock, &waiter, current_thread_info()); ++ mutex_remove_waiter(lock, &waiter, task); + mutex_set_owner(lock); + + /* set it to 0 if there are no waiters left: */ +diff --git a/kernel/panic.c b/kernel/panic.c +index 9ed023b..e49543e 100644 +--- a/kernel/panic.c ++++ b/kernel/panic.c +@@ -402,7 +402,7 @@ static void warn_slowpath_common(const char *file, int line, void *caller, + const char *board; + + printk(KERN_WARNING "------------[ cut here ]------------\n"); +- printk(KERN_WARNING "WARNING: at %s:%d %pS()\n", file, line, caller); ++ printk(KERN_WARNING "WARNING: at %s:%d %pA()\n", file, line, caller); + board = dmi_get_system_info(DMI_PRODUCT_NAME); + if (board) + printk(KERN_WARNING "Hardware name: %s\n", board); +@@ -457,7 +457,8 @@ EXPORT_SYMBOL(warn_slowpath_null); + */ + void __stack_chk_fail(void) + { +- panic("stack-protector: Kernel stack is corrupted in: %p\n", ++ dump_stack(); ++ panic("stack-protector: Kernel stack is corrupted in: %pA\n", + __builtin_return_address(0)); + } + EXPORT_SYMBOL(__stack_chk_fail); +diff --git a/kernel/pid.c b/kernel/pid.c +index 9f08dfa..6765c40 100644 +--- a/kernel/pid.c ++++ b/kernel/pid.c +@@ -33,6 +33,7 @@ + #include <linux/rculist.h> + #include <linux/bootmem.h> + #include <linux/hash.h> ++#include <linux/security.h> + #include <linux/pid_namespace.h> + #include <linux/init_task.h> + #include <linux/syscalls.h> +@@ -45,7 +46,7 @@ struct pid init_struct_pid = INIT_STRUCT_PID; + + int pid_max = PID_MAX_DEFAULT; + +-#define RESERVED_PIDS 300 ++#define RESERVED_PIDS 500 + + int pid_max_min = RESERVED_PIDS + 1; + int pid_max_max = PID_MAX_LIMIT; +@@ -420,10 +421,18 @@ EXPORT_SYMBOL(pid_task); + */ + struct task_struct *find_task_by_pid_ns(pid_t nr, struct pid_namespace *ns) + { ++ struct task_struct *task; ++ + rcu_lockdep_assert(rcu_read_lock_held(), + "find_task_by_pid_ns() needs rcu_read_lock()" + " protection"); +- return pid_task(find_pid_ns(nr, ns), PIDTYPE_PID); ++ ++ task = pid_task(find_pid_ns(nr, ns), PIDTYPE_PID); ++ ++ if (gr_pid_is_chrooted(task)) ++ return NULL; ++ ++ return task; + } + + struct task_struct *find_task_by_vpid(pid_t vnr) +@@ -431,6 +440,14 @@ struct task_struct *find_task_by_vpid(pid_t vnr) + return find_task_by_pid_ns(vnr, current->nsproxy->pid_ns); + } + ++struct task_struct *find_task_by_vpid_unrestricted(pid_t vnr) ++{ ++ rcu_lockdep_assert(rcu_read_lock_held(), ++ "find_task_by_pid_ns() needs rcu_read_lock()" ++ " protection"); ++ return pid_task(find_pid_ns(vnr, current->nsproxy->pid_ns), PIDTYPE_PID); ++} ++ + struct pid *get_task_pid(struct task_struct *task, enum pid_type type) + { + struct pid *pid; +diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c +index 125cb67..a4d1c30 100644 +--- a/kernel/posix-cpu-timers.c ++++ b/kernel/posix-cpu-timers.c +@@ -6,6 +6,7 @@ + #include <linux/posix-timers.h> + #include <linux/errno.h> + #include <linux/math64.h> ++#include <linux/security.h> + #include <asm/uaccess.h> + #include <linux/kernel_stat.h> + #include <trace/events/timer.h> +@@ -1578,14 +1579,14 @@ struct k_clock clock_posix_cpu = { + + static __init int init_posix_cpu_timers(void) + { +- struct k_clock process = { ++ static struct k_clock process = { + .clock_getres = process_cpu_clock_getres, + .clock_get = process_cpu_clock_get, + .timer_create = process_cpu_timer_create, + .nsleep = process_cpu_nsleep, + .nsleep_restart = process_cpu_nsleep_restart, + }; +- struct k_clock thread = { ++ static struct k_clock thread = { + .clock_getres = thread_cpu_clock_getres, + .clock_get = thread_cpu_clock_get, + .timer_create = thread_cpu_timer_create, +diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c +index 69185ae..cc2847a 100644 +--- a/kernel/posix-timers.c ++++ b/kernel/posix-timers.c +@@ -43,6 +43,7 @@ + #include <linux/idr.h> + #include <linux/posix-clock.h> + #include <linux/posix-timers.h> ++#include <linux/grsecurity.h> + #include <linux/syscalls.h> + #include <linux/wait.h> + #include <linux/workqueue.h> +@@ -129,7 +130,7 @@ static DEFINE_SPINLOCK(idr_lock); + * which we beg off on and pass to do_sys_settimeofday(). + */ + +-static struct k_clock posix_clocks[MAX_CLOCKS]; ++static struct k_clock *posix_clocks[MAX_CLOCKS]; + + /* + * These ones are defined below. +@@ -227,7 +228,7 @@ static int posix_get_boottime(const clockid_t which_clock, struct timespec *tp) + */ + static __init int init_posix_timers(void) + { +- struct k_clock clock_realtime = { ++ static struct k_clock clock_realtime = { + .clock_getres = hrtimer_get_res, + .clock_get = posix_clock_realtime_get, + .clock_set = posix_clock_realtime_set, +@@ -239,7 +240,7 @@ static __init int init_posix_timers(void) + .timer_get = common_timer_get, + .timer_del = common_timer_del, + }; +- struct k_clock clock_monotonic = { ++ static struct k_clock clock_monotonic = { + .clock_getres = hrtimer_get_res, + .clock_get = posix_ktime_get_ts, + .nsleep = common_nsleep, +@@ -249,19 +250,19 @@ static __init int init_posix_timers(void) + .timer_get = common_timer_get, + .timer_del = common_timer_del, + }; +- struct k_clock clock_monotonic_raw = { ++ static struct k_clock clock_monotonic_raw = { + .clock_getres = hrtimer_get_res, + .clock_get = posix_get_monotonic_raw, + }; +- struct k_clock clock_realtime_coarse = { ++ static struct k_clock clock_realtime_coarse = { + .clock_getres = posix_get_coarse_res, + .clock_get = posix_get_realtime_coarse, + }; +- struct k_clock clock_monotonic_coarse = { ++ static struct k_clock clock_monotonic_coarse = { + .clock_getres = posix_get_coarse_res, + .clock_get = posix_get_monotonic_coarse, + }; +- struct k_clock clock_boottime = { ++ static struct k_clock clock_boottime = { + .clock_getres = hrtimer_get_res, + .clock_get = posix_get_boottime, + .nsleep = common_nsleep, +@@ -473,7 +474,7 @@ void posix_timers_register_clock(const clockid_t clock_id, + return; + } + +- posix_clocks[clock_id] = *new_clock; ++ posix_clocks[clock_id] = new_clock; + } + EXPORT_SYMBOL_GPL(posix_timers_register_clock); + +@@ -519,9 +520,9 @@ static struct k_clock *clockid_to_kclock(const clockid_t id) + return (id & CLOCKFD_MASK) == CLOCKFD ? + &clock_posix_dynamic : &clock_posix_cpu; + +- if (id >= MAX_CLOCKS || !posix_clocks[id].clock_getres) ++ if (id >= MAX_CLOCKS || !posix_clocks[id] || !posix_clocks[id]->clock_getres) + return NULL; +- return &posix_clocks[id]; ++ return posix_clocks[id]; + } + + static int common_timer_create(struct k_itimer *new_timer) +@@ -959,6 +960,13 @@ SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock, + if (copy_from_user(&new_tp, tp, sizeof (*tp))) + return -EFAULT; + ++ /* only the CLOCK_REALTIME clock can be set, all other clocks ++ have their clock_set fptr set to a nosettime dummy function ++ CLOCK_REALTIME has a NULL clock_set fptr which causes it to ++ call common_clock_set, which calls do_sys_settimeofday, which ++ we hook ++ */ ++ + return kc->clock_set(which_clock, &new_tp); + } + +diff --git a/kernel/power/poweroff.c b/kernel/power/poweroff.c +index d523593..68197a4 100644 +--- a/kernel/power/poweroff.c ++++ b/kernel/power/poweroff.c +@@ -37,7 +37,7 @@ static struct sysrq_key_op sysrq_poweroff_op = { + .enable_mask = SYSRQ_ENABLE_BOOT, + }; + +-static int pm_sysrq_init(void) ++static int __init pm_sysrq_init(void) + { + register_sysrq_key('o', &sysrq_poweroff_op); + return 0; +diff --git a/kernel/power/process.c b/kernel/power/process.c +index 19db29f..33b52b6 100644 +--- a/kernel/power/process.c ++++ b/kernel/power/process.c +@@ -33,6 +33,7 @@ static int try_to_freeze_tasks(bool user_only) + u64 elapsed_csecs64; + unsigned int elapsed_csecs; + bool wakeup = false; ++ bool timedout = false; + + do_gettimeofday(&start); + +@@ -43,6 +44,8 @@ static int try_to_freeze_tasks(bool user_only) + + while (true) { + todo = 0; ++ if (time_after(jiffies, end_time)) ++ timedout = true; + read_lock(&tasklist_lock); + do_each_thread(g, p) { + if (p == current || !freeze_task(p)) +@@ -58,9 +61,13 @@ static int try_to_freeze_tasks(bool user_only) + * guaranteed that TASK_STOPPED/TRACED -> TASK_RUNNING + * transition can't race with task state testing here. + */ +- if (!task_is_stopped_or_traced(p) && +- !freezer_should_skip(p)) ++ if (!task_is_stopped_or_traced(p) && !freezer_should_skip(p)) { + todo++; ++ if (timedout) { ++ printk(KERN_ERR "Task refusing to freeze:\n"); ++ sched_show_task(p); ++ } ++ } + } while_each_thread(g, p); + read_unlock(&tasklist_lock); + +@@ -69,7 +76,7 @@ static int try_to_freeze_tasks(bool user_only) + todo += wq_busy; + } + +- if (!todo || time_after(jiffies, end_time)) ++ if (!todo || timedout) + break; + + if (pm_wakeup_pending()) { +diff --git a/kernel/printk.c b/kernel/printk.c +index b663c2c..1d6ba7a 100644 +--- a/kernel/printk.c ++++ b/kernel/printk.c +@@ -316,6 +316,11 @@ static int check_syslog_permissions(int type, bool from_file) + if (from_file && type != SYSLOG_ACTION_OPEN) + return 0; + ++#ifdef CONFIG_GRKERNSEC_DMESG ++ if (grsec_enable_dmesg && !capable(CAP_SYSLOG) && !capable_nolog(CAP_SYS_ADMIN)) ++ return -EPERM; ++#endif ++ + if (syslog_action_restricted(type)) { + if (capable(CAP_SYSLOG)) + return 0; +diff --git a/kernel/profile.c b/kernel/profile.c +index 76b8e77..a2930e8 100644 +--- a/kernel/profile.c ++++ b/kernel/profile.c +@@ -39,7 +39,7 @@ struct profile_hit { + /* Oprofile timer tick hook */ + static int (*timer_hook)(struct pt_regs *) __read_mostly; + +-static atomic_t *prof_buffer; ++static atomic_unchecked_t *prof_buffer; + static unsigned long prof_len, prof_shift; + + int prof_on __read_mostly; +@@ -281,7 +281,7 @@ static void profile_flip_buffers(void) + hits[i].pc = 0; + continue; + } +- atomic_add(hits[i].hits, &prof_buffer[hits[i].pc]); ++ atomic_add_unchecked(hits[i].hits, &prof_buffer[hits[i].pc]); + hits[i].hits = hits[i].pc = 0; + } + } +@@ -342,9 +342,9 @@ static void do_profile_hits(int type, void *__pc, unsigned int nr_hits) + * Add the current hit(s) and flush the write-queue out + * to the global buffer: + */ +- atomic_add(nr_hits, &prof_buffer[pc]); ++ atomic_add_unchecked(nr_hits, &prof_buffer[pc]); + for (i = 0; i < NR_PROFILE_HIT; ++i) { +- atomic_add(hits[i].hits, &prof_buffer[hits[i].pc]); ++ atomic_add_unchecked(hits[i].hits, &prof_buffer[hits[i].pc]); + hits[i].pc = hits[i].hits = 0; + } + out: +@@ -419,7 +419,7 @@ static void do_profile_hits(int type, void *__pc, unsigned int nr_hits) + { + unsigned long pc; + pc = ((unsigned long)__pc - (unsigned long)_stext) >> prof_shift; +- atomic_add(nr_hits, &prof_buffer[min(pc, prof_len - 1)]); ++ atomic_add_unchecked(nr_hits, &prof_buffer[min(pc, prof_len - 1)]); + } + #endif /* !CONFIG_SMP */ + +@@ -517,7 +517,7 @@ read_profile(struct file *file, char __user *buf, size_t count, loff_t *ppos) + return -EFAULT; + buf++; p++; count--; read++; + } +- pnt = (char *)prof_buffer + p - sizeof(atomic_t); ++ pnt = (char *)prof_buffer + p - sizeof(atomic_unchecked_t); + if (copy_to_user(buf, (void *)pnt, count)) + return -EFAULT; + read += count; +@@ -548,7 +548,7 @@ static ssize_t write_profile(struct file *file, const char __user *buf, + } + #endif + profile_discard_flip_buffers(); +- memset(prof_buffer, 0, prof_len * sizeof(atomic_t)); ++ memset(prof_buffer, 0, prof_len * sizeof(atomic_unchecked_t)); + return count; + } + +diff --git a/kernel/ptrace.c b/kernel/ptrace.c +index ee8d49b..bd3d790 100644 +--- a/kernel/ptrace.c ++++ b/kernel/ptrace.c +@@ -280,7 +280,7 @@ static int ptrace_attach(struct task_struct *task, long request, + + if (seize) + flags |= PT_SEIZED; +- if (ns_capable(task_user_ns(task), CAP_SYS_PTRACE)) ++ if (ns_capable_nolog(task_user_ns(task), CAP_SYS_PTRACE)) + flags |= PT_PTRACE_CAP; + task->ptrace = flags; + +@@ -487,7 +487,7 @@ int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __user *dst + break; + return -EIO; + } +- if (copy_to_user(dst, buf, retval)) ++ if (retval > sizeof(buf) || copy_to_user(dst, buf, retval)) + return -EFAULT; + copied += retval; + src += retval; +@@ -672,7 +672,7 @@ int ptrace_request(struct task_struct *child, long request, + bool seized = child->ptrace & PT_SEIZED; + int ret = -EIO; + siginfo_t siginfo, *si; +- void __user *datavp = (void __user *) data; ++ void __user *datavp = (__force void __user *) data; + unsigned long __user *datalp = datavp; + unsigned long flags; + +@@ -874,14 +874,21 @@ SYSCALL_DEFINE4(ptrace, long, request, long, pid, unsigned long, addr, + goto out; + } + ++ if (gr_handle_ptrace(child, request)) { ++ ret = -EPERM; ++ goto out_put_task_struct; ++ } ++ + if (request == PTRACE_ATTACH || request == PTRACE_SEIZE) { + ret = ptrace_attach(child, request, addr, data); + /* + * Some architectures need to do book-keeping after + * a ptrace attach. + */ +- if (!ret) ++ if (!ret) { + arch_ptrace_attach(child); ++ gr_audit_ptrace(child); ++ } + goto out_put_task_struct; + } + +@@ -907,7 +914,7 @@ int generic_ptrace_peekdata(struct task_struct *tsk, unsigned long addr, + copied = access_process_vm(tsk, addr, &tmp, sizeof(tmp), 0); + if (copied != sizeof(tmp)) + return -EIO; +- return put_user(tmp, (unsigned long __user *)data); ++ return put_user(tmp, (__force unsigned long __user *)data); + } + + int generic_ptrace_pokedata(struct task_struct *tsk, unsigned long addr, +@@ -1017,14 +1024,21 @@ asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, + goto out; + } + ++ if (gr_handle_ptrace(child, request)) { ++ ret = -EPERM; ++ goto out_put_task_struct; ++ } ++ + if (request == PTRACE_ATTACH || request == PTRACE_SEIZE) { + ret = ptrace_attach(child, request, addr, data); + /* + * Some architectures need to do book-keeping after + * a ptrace attach. + */ +- if (!ret) ++ if (!ret) { + arch_ptrace_attach(child); ++ gr_audit_ptrace(child); ++ } + goto out_put_task_struct; + } + +diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c +index 37a5444..eec170a 100644 +--- a/kernel/rcutiny.c ++++ b/kernel/rcutiny.c +@@ -46,7 +46,7 @@ + struct rcu_ctrlblk; + static void invoke_rcu_callbacks(void); + static void __rcu_process_callbacks(struct rcu_ctrlblk *rcp); +-static void rcu_process_callbacks(struct softirq_action *unused); ++static void rcu_process_callbacks(void); + static void __call_rcu(struct rcu_head *head, + void (*func)(struct rcu_head *rcu), + struct rcu_ctrlblk *rcp); +@@ -307,7 +307,7 @@ static void __rcu_process_callbacks(struct rcu_ctrlblk *rcp) + rcu_is_callbacks_kthread())); + } + +-static void rcu_process_callbacks(struct softirq_action *unused) ++static void rcu_process_callbacks(void) + { + __rcu_process_callbacks(&rcu_sched_ctrlblk); + __rcu_process_callbacks(&rcu_bh_ctrlblk); +diff --git a/kernel/rcutiny_plugin.h b/kernel/rcutiny_plugin.h +index 22ecea0..3789898 100644 +--- a/kernel/rcutiny_plugin.h ++++ b/kernel/rcutiny_plugin.h +@@ -955,7 +955,7 @@ static int rcu_kthread(void *arg) + have_rcu_kthread_work = morework; + local_irq_restore(flags); + if (work) +- rcu_process_callbacks(NULL); ++ rcu_process_callbacks(); + schedule_timeout_interruptible(1); /* Leave CPU for others. */ + } + +diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c +index a89b381..efdcad8 100644 +--- a/kernel/rcutorture.c ++++ b/kernel/rcutorture.c +@@ -158,12 +158,12 @@ static DEFINE_PER_CPU(long [RCU_TORTURE_PIPE_LEN + 1], rcu_torture_count) = + { 0 }; + static DEFINE_PER_CPU(long [RCU_TORTURE_PIPE_LEN + 1], rcu_torture_batch) = + { 0 }; +-static atomic_t rcu_torture_wcount[RCU_TORTURE_PIPE_LEN + 1]; +-static atomic_t n_rcu_torture_alloc; +-static atomic_t n_rcu_torture_alloc_fail; +-static atomic_t n_rcu_torture_free; +-static atomic_t n_rcu_torture_mberror; +-static atomic_t n_rcu_torture_error; ++static atomic_unchecked_t rcu_torture_wcount[RCU_TORTURE_PIPE_LEN + 1]; ++static atomic_unchecked_t n_rcu_torture_alloc; ++static atomic_unchecked_t n_rcu_torture_alloc_fail; ++static atomic_unchecked_t n_rcu_torture_free; ++static atomic_unchecked_t n_rcu_torture_mberror; ++static atomic_unchecked_t n_rcu_torture_error; + static long n_rcu_torture_boost_ktrerror; + static long n_rcu_torture_boost_rterror; + static long n_rcu_torture_boost_failure; +@@ -253,11 +253,11 @@ rcu_torture_alloc(void) + + spin_lock_bh(&rcu_torture_lock); + if (list_empty(&rcu_torture_freelist)) { +- atomic_inc(&n_rcu_torture_alloc_fail); ++ atomic_inc_unchecked(&n_rcu_torture_alloc_fail); + spin_unlock_bh(&rcu_torture_lock); + return NULL; + } +- atomic_inc(&n_rcu_torture_alloc); ++ atomic_inc_unchecked(&n_rcu_torture_alloc); + p = rcu_torture_freelist.next; + list_del_init(p); + spin_unlock_bh(&rcu_torture_lock); +@@ -270,7 +270,7 @@ rcu_torture_alloc(void) + static void + rcu_torture_free(struct rcu_torture *p) + { +- atomic_inc(&n_rcu_torture_free); ++ atomic_inc_unchecked(&n_rcu_torture_free); + spin_lock_bh(&rcu_torture_lock); + list_add_tail(&p->rtort_free, &rcu_torture_freelist); + spin_unlock_bh(&rcu_torture_lock); +@@ -390,7 +390,7 @@ rcu_torture_cb(struct rcu_head *p) + i = rp->rtort_pipe_count; + if (i > RCU_TORTURE_PIPE_LEN) + i = RCU_TORTURE_PIPE_LEN; +- atomic_inc(&rcu_torture_wcount[i]); ++ atomic_inc_unchecked(&rcu_torture_wcount[i]); + if (++rp->rtort_pipe_count >= RCU_TORTURE_PIPE_LEN) { + rp->rtort_mbtest = 0; + rcu_torture_free(rp); +@@ -437,7 +437,7 @@ static void rcu_sync_torture_deferred_free(struct rcu_torture *p) + i = rp->rtort_pipe_count; + if (i > RCU_TORTURE_PIPE_LEN) + i = RCU_TORTURE_PIPE_LEN; +- atomic_inc(&rcu_torture_wcount[i]); ++ atomic_inc_unchecked(&rcu_torture_wcount[i]); + if (++rp->rtort_pipe_count >= RCU_TORTURE_PIPE_LEN) { + rp->rtort_mbtest = 0; + list_del(&rp->rtort_free); +@@ -926,7 +926,7 @@ rcu_torture_writer(void *arg) + i = old_rp->rtort_pipe_count; + if (i > RCU_TORTURE_PIPE_LEN) + i = RCU_TORTURE_PIPE_LEN; +- atomic_inc(&rcu_torture_wcount[i]); ++ atomic_inc_unchecked(&rcu_torture_wcount[i]); + old_rp->rtort_pipe_count++; + cur_ops->deferred_free(old_rp); + } +@@ -1007,7 +1007,7 @@ static void rcu_torture_timer(unsigned long unused) + } + do_trace_rcu_torture_read(cur_ops->name, &p->rtort_rcu); + if (p->rtort_mbtest == 0) +- atomic_inc(&n_rcu_torture_mberror); ++ atomic_inc_unchecked(&n_rcu_torture_mberror); + spin_lock(&rand_lock); + cur_ops->read_delay(&rand); + n_rcu_torture_timers++; +@@ -1071,7 +1071,7 @@ rcu_torture_reader(void *arg) + } + do_trace_rcu_torture_read(cur_ops->name, &p->rtort_rcu); + if (p->rtort_mbtest == 0) +- atomic_inc(&n_rcu_torture_mberror); ++ atomic_inc_unchecked(&n_rcu_torture_mberror); + cur_ops->read_delay(&rand); + preempt_disable(); + pipe_count = p->rtort_pipe_count; +@@ -1133,10 +1133,10 @@ rcu_torture_printk(char *page) + rcu_torture_current, + rcu_torture_current_version, + list_empty(&rcu_torture_freelist), +- atomic_read(&n_rcu_torture_alloc), +- atomic_read(&n_rcu_torture_alloc_fail), +- atomic_read(&n_rcu_torture_free), +- atomic_read(&n_rcu_torture_mberror), ++ atomic_read_unchecked(&n_rcu_torture_alloc), ++ atomic_read_unchecked(&n_rcu_torture_alloc_fail), ++ atomic_read_unchecked(&n_rcu_torture_free), ++ atomic_read_unchecked(&n_rcu_torture_mberror), + n_rcu_torture_boost_ktrerror, + n_rcu_torture_boost_rterror, + n_rcu_torture_boost_failure, +@@ -1146,7 +1146,7 @@ rcu_torture_printk(char *page) + n_online_attempts, + n_offline_successes, + n_offline_attempts); +- if (atomic_read(&n_rcu_torture_mberror) != 0 || ++ if (atomic_read_unchecked(&n_rcu_torture_mberror) != 0 || + n_rcu_torture_boost_ktrerror != 0 || + n_rcu_torture_boost_rterror != 0 || + n_rcu_torture_boost_failure != 0) +@@ -1154,7 +1154,7 @@ rcu_torture_printk(char *page) + cnt += sprintf(&page[cnt], "\n%s%s ", torture_type, TORTURE_FLAG); + if (i > 1) { + cnt += sprintf(&page[cnt], "!!! "); +- atomic_inc(&n_rcu_torture_error); ++ atomic_inc_unchecked(&n_rcu_torture_error); + WARN_ON_ONCE(1); + } + cnt += sprintf(&page[cnt], "Reader Pipe: "); +@@ -1168,7 +1168,7 @@ rcu_torture_printk(char *page) + cnt += sprintf(&page[cnt], "Free-Block Circulation: "); + for (i = 0; i < RCU_TORTURE_PIPE_LEN + 1; i++) { + cnt += sprintf(&page[cnt], " %d", +- atomic_read(&rcu_torture_wcount[i])); ++ atomic_read_unchecked(&rcu_torture_wcount[i])); + } + cnt += sprintf(&page[cnt], "\n"); + if (cur_ops->stats) +@@ -1676,7 +1676,7 @@ rcu_torture_cleanup(void) + + if (cur_ops->cleanup) + cur_ops->cleanup(); +- if (atomic_read(&n_rcu_torture_error)) ++ if (atomic_read_unchecked(&n_rcu_torture_error)) + rcu_torture_print_module_parms(cur_ops, "End of test: FAILURE"); + else if (n_online_successes != n_online_attempts || + n_offline_successes != n_offline_attempts) +@@ -1744,17 +1744,17 @@ rcu_torture_init(void) + + rcu_torture_current = NULL; + rcu_torture_current_version = 0; +- atomic_set(&n_rcu_torture_alloc, 0); +- atomic_set(&n_rcu_torture_alloc_fail, 0); +- atomic_set(&n_rcu_torture_free, 0); +- atomic_set(&n_rcu_torture_mberror, 0); +- atomic_set(&n_rcu_torture_error, 0); ++ atomic_set_unchecked(&n_rcu_torture_alloc, 0); ++ atomic_set_unchecked(&n_rcu_torture_alloc_fail, 0); ++ atomic_set_unchecked(&n_rcu_torture_free, 0); ++ atomic_set_unchecked(&n_rcu_torture_mberror, 0); ++ atomic_set_unchecked(&n_rcu_torture_error, 0); + n_rcu_torture_boost_ktrerror = 0; + n_rcu_torture_boost_rterror = 0; + n_rcu_torture_boost_failure = 0; + n_rcu_torture_boosts = 0; + for (i = 0; i < RCU_TORTURE_PIPE_LEN + 1; i++) +- atomic_set(&rcu_torture_wcount[i], 0); ++ atomic_set_unchecked(&rcu_torture_wcount[i], 0); + for_each_possible_cpu(cpu) { + for (i = 0; i < RCU_TORTURE_PIPE_LEN + 1; i++) { + per_cpu(rcu_torture_count, cpu)[i] = 0; +diff --git a/kernel/rcutree.c b/kernel/rcutree.c +index d0c5baf..109b2e7 100644 +--- a/kernel/rcutree.c ++++ b/kernel/rcutree.c +@@ -357,9 +357,9 @@ static void rcu_idle_enter_common(struct rcu_dynticks *rdtp, long long oldval) + rcu_prepare_for_idle(smp_processor_id()); + /* CPUs seeing atomic_inc() must see prior RCU read-side crit sects */ + smp_mb__before_atomic_inc(); /* See above. */ +- atomic_inc(&rdtp->dynticks); ++ atomic_inc_unchecked(&rdtp->dynticks); + smp_mb__after_atomic_inc(); /* Force ordering with next sojourn. */ +- WARN_ON_ONCE(atomic_read(&rdtp->dynticks) & 0x1); ++ WARN_ON_ONCE(atomic_read_unchecked(&rdtp->dynticks) & 0x1); + + /* + * The idle task is not permitted to enter the idle loop while +@@ -448,10 +448,10 @@ void rcu_irq_exit(void) + static void rcu_idle_exit_common(struct rcu_dynticks *rdtp, long long oldval) + { + smp_mb__before_atomic_inc(); /* Force ordering w/previous sojourn. */ +- atomic_inc(&rdtp->dynticks); ++ atomic_inc_unchecked(&rdtp->dynticks); + /* CPUs seeing atomic_inc() must see later RCU read-side crit sects */ + smp_mb__after_atomic_inc(); /* See above. */ +- WARN_ON_ONCE(!(atomic_read(&rdtp->dynticks) & 0x1)); ++ WARN_ON_ONCE(!(atomic_read_unchecked(&rdtp->dynticks) & 0x1)); + rcu_cleanup_after_idle(smp_processor_id()); + trace_rcu_dyntick("End", oldval, rdtp->dynticks_nesting); + if (!is_idle_task(current)) { +@@ -545,14 +545,14 @@ void rcu_nmi_enter(void) + struct rcu_dynticks *rdtp = &__get_cpu_var(rcu_dynticks); + + if (rdtp->dynticks_nmi_nesting == 0 && +- (atomic_read(&rdtp->dynticks) & 0x1)) ++ (atomic_read_unchecked(&rdtp->dynticks) & 0x1)) + return; + rdtp->dynticks_nmi_nesting++; + smp_mb__before_atomic_inc(); /* Force delay from prior write. */ +- atomic_inc(&rdtp->dynticks); ++ atomic_inc_unchecked(&rdtp->dynticks); + /* CPUs seeing atomic_inc() must see later RCU read-side crit sects */ + smp_mb__after_atomic_inc(); /* See above. */ +- WARN_ON_ONCE(!(atomic_read(&rdtp->dynticks) & 0x1)); ++ WARN_ON_ONCE(!(atomic_read_unchecked(&rdtp->dynticks) & 0x1)); + } + + /** +@@ -571,9 +571,9 @@ void rcu_nmi_exit(void) + return; + /* CPUs seeing atomic_inc() must see prior RCU read-side crit sects */ + smp_mb__before_atomic_inc(); /* See above. */ +- atomic_inc(&rdtp->dynticks); ++ atomic_inc_unchecked(&rdtp->dynticks); + smp_mb__after_atomic_inc(); /* Force delay to next write. */ +- WARN_ON_ONCE(atomic_read(&rdtp->dynticks) & 0x1); ++ WARN_ON_ONCE(atomic_read_unchecked(&rdtp->dynticks) & 0x1); + } + + #ifdef CONFIG_PROVE_RCU +@@ -589,7 +589,7 @@ int rcu_is_cpu_idle(void) + int ret; + + preempt_disable(); +- ret = (atomic_read(&__get_cpu_var(rcu_dynticks).dynticks) & 0x1) == 0; ++ ret = (atomic_read_unchecked(&__get_cpu_var(rcu_dynticks).dynticks) & 0x1) == 0; + preempt_enable(); + return ret; + } +@@ -659,7 +659,7 @@ int rcu_is_cpu_rrupt_from_idle(void) + */ + static int dyntick_save_progress_counter(struct rcu_data *rdp) + { +- rdp->dynticks_snap = atomic_add_return(0, &rdp->dynticks->dynticks); ++ rdp->dynticks_snap = atomic_add_return_unchecked(0, &rdp->dynticks->dynticks); + return (rdp->dynticks_snap & 0x1) == 0; + } + +@@ -674,7 +674,7 @@ static int rcu_implicit_dynticks_qs(struct rcu_data *rdp) + unsigned int curr; + unsigned int snap; + +- curr = (unsigned int)atomic_add_return(0, &rdp->dynticks->dynticks); ++ curr = (unsigned int)atomic_add_return_unchecked(0, &rdp->dynticks->dynticks); + snap = (unsigned int)rdp->dynticks_snap; + + /* +@@ -704,10 +704,10 @@ static int jiffies_till_stall_check(void) + * for CONFIG_RCU_CPU_STALL_TIMEOUT. + */ + if (till_stall_check < 3) { +- ACCESS_ONCE(rcu_cpu_stall_timeout) = 3; ++ ACCESS_ONCE_RW(rcu_cpu_stall_timeout) = 3; + till_stall_check = 3; + } else if (till_stall_check > 300) { +- ACCESS_ONCE(rcu_cpu_stall_timeout) = 300; ++ ACCESS_ONCE_RW(rcu_cpu_stall_timeout) = 300; + till_stall_check = 300; + } + return till_stall_check * HZ + RCU_STALL_DELAY_DELTA; +@@ -1766,7 +1766,7 @@ __rcu_process_callbacks(struct rcu_state *rsp, struct rcu_data *rdp) + /* + * Do RCU core processing for the current CPU. + */ +-static void rcu_process_callbacks(struct softirq_action *unused) ++static void rcu_process_callbacks(void) + { + trace_rcu_utilization("Start RCU core"); + __rcu_process_callbacks(&rcu_sched_state, +@@ -1949,8 +1949,8 @@ void synchronize_rcu_bh(void) + } + EXPORT_SYMBOL_GPL(synchronize_rcu_bh); + +-static atomic_t sync_sched_expedited_started = ATOMIC_INIT(0); +-static atomic_t sync_sched_expedited_done = ATOMIC_INIT(0); ++static atomic_unchecked_t sync_sched_expedited_started = ATOMIC_INIT(0); ++static atomic_unchecked_t sync_sched_expedited_done = ATOMIC_INIT(0); + + static int synchronize_sched_expedited_cpu_stop(void *data) + { +@@ -2011,7 +2011,7 @@ void synchronize_sched_expedited(void) + int firstsnap, s, snap, trycount = 0; + + /* Note that atomic_inc_return() implies full memory barrier. */ +- firstsnap = snap = atomic_inc_return(&sync_sched_expedited_started); ++ firstsnap = snap = atomic_inc_return_unchecked(&sync_sched_expedited_started); + get_online_cpus(); + WARN_ON_ONCE(cpu_is_offline(raw_smp_processor_id())); + +@@ -2033,7 +2033,7 @@ void synchronize_sched_expedited(void) + } + + /* Check to see if someone else did our work for us. */ +- s = atomic_read(&sync_sched_expedited_done); ++ s = atomic_read_unchecked(&sync_sched_expedited_done); + if (UINT_CMP_GE((unsigned)s, (unsigned)firstsnap)) { + smp_mb(); /* ensure test happens before caller kfree */ + return; +@@ -2048,7 +2048,7 @@ void synchronize_sched_expedited(void) + * grace period works for us. + */ + get_online_cpus(); +- snap = atomic_read(&sync_sched_expedited_started); ++ snap = atomic_read_unchecked(&sync_sched_expedited_started); + smp_mb(); /* ensure read is before try_stop_cpus(). */ + } + +@@ -2059,12 +2059,12 @@ void synchronize_sched_expedited(void) + * than we did beat us to the punch. + */ + do { +- s = atomic_read(&sync_sched_expedited_done); ++ s = atomic_read_unchecked(&sync_sched_expedited_done); + if (UINT_CMP_GE((unsigned)s, (unsigned)snap)) { + smp_mb(); /* ensure test happens before caller kfree */ + break; + } +- } while (atomic_cmpxchg(&sync_sched_expedited_done, s, snap) != s); ++ } while (atomic_cmpxchg_unchecked(&sync_sched_expedited_done, s, snap) != s); + + put_online_cpus(); + } +@@ -2262,7 +2262,7 @@ rcu_boot_init_percpu_data(int cpu, struct rcu_state *rsp) + rdp->qlen = 0; + rdp->dynticks = &per_cpu(rcu_dynticks, cpu); + WARN_ON_ONCE(rdp->dynticks->dynticks_nesting != DYNTICK_TASK_EXIT_IDLE); +- WARN_ON_ONCE(atomic_read(&rdp->dynticks->dynticks) != 1); ++ WARN_ON_ONCE(atomic_read_unchecked(&rdp->dynticks->dynticks) != 1); + rdp->cpu = cpu; + rdp->rsp = rsp; + raw_spin_unlock_irqrestore(&rnp->lock, flags); +@@ -2290,8 +2290,8 @@ rcu_init_percpu_data(int cpu, struct rcu_state *rsp, int preemptible) + rdp->n_force_qs_snap = rsp->n_force_qs; + rdp->blimit = blimit; + rdp->dynticks->dynticks_nesting = DYNTICK_TASK_EXIT_IDLE; +- atomic_set(&rdp->dynticks->dynticks, +- (atomic_read(&rdp->dynticks->dynticks) & ~0x1) + 1); ++ atomic_set_unchecked(&rdp->dynticks->dynticks, ++ (atomic_read_unchecked(&rdp->dynticks->dynticks) & ~0x1) + 1); + rcu_prepare_for_idle_init(cpu); + raw_spin_unlock(&rnp->lock); /* irqs remain disabled. */ + +diff --git a/kernel/rcutree.h b/kernel/rcutree.h +index cdd1be0..5b2efb4 100644 +--- a/kernel/rcutree.h ++++ b/kernel/rcutree.h +@@ -87,7 +87,7 @@ struct rcu_dynticks { + long long dynticks_nesting; /* Track irq/process nesting level. */ + /* Process level is worth LLONG_MAX/2. */ + int dynticks_nmi_nesting; /* Track NMI nesting level. */ +- atomic_t dynticks; /* Even value for idle, else odd. */ ++ atomic_unchecked_t dynticks;/* Even value for idle, else odd. */ + }; + + /* RCU's kthread states for tracing. */ +diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h +index c023464..7f57225 100644 +--- a/kernel/rcutree_plugin.h ++++ b/kernel/rcutree_plugin.h +@@ -909,7 +909,7 @@ void synchronize_rcu_expedited(void) + + /* Clean up and exit. */ + smp_mb(); /* ensure expedited GP seen before counter increment. */ +- ACCESS_ONCE(sync_rcu_preempt_exp_count)++; ++ ACCESS_ONCE_RW(sync_rcu_preempt_exp_count)++; + unlock_mb_ret: + mutex_unlock(&sync_rcu_preempt_exp_mutex); + mb_ret: +diff --git a/kernel/rcutree_trace.c b/kernel/rcutree_trace.c +index ed459ed..a03c3fa 100644 +--- a/kernel/rcutree_trace.c ++++ b/kernel/rcutree_trace.c +@@ -68,7 +68,7 @@ static void print_one_rcu_data(struct seq_file *m, struct rcu_data *rdp) + rdp->passed_quiesce, rdp->passed_quiesce_gpnum, + rdp->qs_pending); + seq_printf(m, " dt=%d/%llx/%d df=%lu", +- atomic_read(&rdp->dynticks->dynticks), ++ atomic_read_unchecked(&rdp->dynticks->dynticks), + rdp->dynticks->dynticks_nesting, + rdp->dynticks->dynticks_nmi_nesting, + rdp->dynticks_fqs); +@@ -140,7 +140,7 @@ static void print_one_rcu_data_csv(struct seq_file *m, struct rcu_data *rdp) + rdp->passed_quiesce, rdp->passed_quiesce_gpnum, + rdp->qs_pending); + seq_printf(m, ",%d,%llx,%d,%lu", +- atomic_read(&rdp->dynticks->dynticks), ++ atomic_read_unchecked(&rdp->dynticks->dynticks), + rdp->dynticks->dynticks_nesting, + rdp->dynticks->dynticks_nmi_nesting, + rdp->dynticks_fqs); +diff --git a/kernel/resource.c b/kernel/resource.c +index 7e8ea66..1efd11f 100644 +--- a/kernel/resource.c ++++ b/kernel/resource.c +@@ -141,8 +141,18 @@ static const struct file_operations proc_iomem_operations = { + + static int __init ioresources_init(void) + { ++#ifdef CONFIG_GRKERNSEC_PROC_ADD ++#ifdef CONFIG_GRKERNSEC_PROC_USER ++ proc_create("ioports", S_IRUSR, NULL, &proc_ioports_operations); ++ proc_create("iomem", S_IRUSR, NULL, &proc_iomem_operations); ++#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP) ++ proc_create("ioports", S_IRUSR | S_IRGRP, NULL, &proc_ioports_operations); ++ proc_create("iomem", S_IRUSR | S_IRGRP, NULL, &proc_iomem_operations); ++#endif ++#else + proc_create("ioports", 0, NULL, &proc_ioports_operations); + proc_create("iomem", 0, NULL, &proc_iomem_operations); ++#endif + return 0; + } + __initcall(ioresources_init); +diff --git a/kernel/rtmutex-tester.c b/kernel/rtmutex-tester.c +index 98ec494..4241d6d 100644 +--- a/kernel/rtmutex-tester.c ++++ b/kernel/rtmutex-tester.c +@@ -20,7 +20,7 @@ + #define MAX_RT_TEST_MUTEXES 8 + + static spinlock_t rttest_lock; +-static atomic_t rttest_event; ++static atomic_unchecked_t rttest_event; + + struct test_thread_data { + int opcode; +@@ -61,7 +61,7 @@ static int handle_op(struct test_thread_data *td, int lockwakeup) + + case RTTEST_LOCKCONT: + td->mutexes[td->opdata] = 1; +- td->event = atomic_add_return(1, &rttest_event); ++ td->event = atomic_add_return_unchecked(1, &rttest_event); + return 0; + + case RTTEST_RESET: +@@ -74,7 +74,7 @@ static int handle_op(struct test_thread_data *td, int lockwakeup) + return 0; + + case RTTEST_RESETEVENT: +- atomic_set(&rttest_event, 0); ++ atomic_set_unchecked(&rttest_event, 0); + return 0; + + default: +@@ -91,9 +91,9 @@ static int handle_op(struct test_thread_data *td, int lockwakeup) + return ret; + + td->mutexes[id] = 1; +- td->event = atomic_add_return(1, &rttest_event); ++ td->event = atomic_add_return_unchecked(1, &rttest_event); + rt_mutex_lock(&mutexes[id]); +- td->event = atomic_add_return(1, &rttest_event); ++ td->event = atomic_add_return_unchecked(1, &rttest_event); + td->mutexes[id] = 4; + return 0; + +@@ -104,9 +104,9 @@ static int handle_op(struct test_thread_data *td, int lockwakeup) + return ret; + + td->mutexes[id] = 1; +- td->event = atomic_add_return(1, &rttest_event); ++ td->event = atomic_add_return_unchecked(1, &rttest_event); + ret = rt_mutex_lock_interruptible(&mutexes[id], 0); +- td->event = atomic_add_return(1, &rttest_event); ++ td->event = atomic_add_return_unchecked(1, &rttest_event); + td->mutexes[id] = ret ? 0 : 4; + return ret ? -EINTR : 0; + +@@ -115,9 +115,9 @@ static int handle_op(struct test_thread_data *td, int lockwakeup) + if (id < 0 || id >= MAX_RT_TEST_MUTEXES || td->mutexes[id] != 4) + return ret; + +- td->event = atomic_add_return(1, &rttest_event); ++ td->event = atomic_add_return_unchecked(1, &rttest_event); + rt_mutex_unlock(&mutexes[id]); +- td->event = atomic_add_return(1, &rttest_event); ++ td->event = atomic_add_return_unchecked(1, &rttest_event); + td->mutexes[id] = 0; + return 0; + +@@ -164,7 +164,7 @@ void schedule_rt_mutex_test(struct rt_mutex *mutex) + break; + + td->mutexes[dat] = 2; +- td->event = atomic_add_return(1, &rttest_event); ++ td->event = atomic_add_return_unchecked(1, &rttest_event); + break; + + default: +@@ -184,7 +184,7 @@ void schedule_rt_mutex_test(struct rt_mutex *mutex) + return; + + td->mutexes[dat] = 3; +- td->event = atomic_add_return(1, &rttest_event); ++ td->event = atomic_add_return_unchecked(1, &rttest_event); + break; + + case RTTEST_LOCKNOWAIT: +@@ -196,7 +196,7 @@ void schedule_rt_mutex_test(struct rt_mutex *mutex) + return; + + td->mutexes[dat] = 1; +- td->event = atomic_add_return(1, &rttest_event); ++ td->event = atomic_add_return_unchecked(1, &rttest_event); + return; + + default: +diff --git a/kernel/sched/auto_group.c b/kernel/sched/auto_group.c +index 0984a21..939f183 100644 +--- a/kernel/sched/auto_group.c ++++ b/kernel/sched/auto_group.c +@@ -11,7 +11,7 @@ + + unsigned int __read_mostly sysctl_sched_autogroup_enabled = 1; + static struct autogroup autogroup_default; +-static atomic_t autogroup_seq_nr; ++static atomic_unchecked_t autogroup_seq_nr; + + void __init autogroup_init(struct task_struct *init_task) + { +@@ -78,7 +78,7 @@ static inline struct autogroup *autogroup_create(void) + + kref_init(&ag->kref); + init_rwsem(&ag->lock); +- ag->id = atomic_inc_return(&autogroup_seq_nr); ++ ag->id = atomic_inc_return_unchecked(&autogroup_seq_nr); + ag->tg = tg; + #ifdef CONFIG_RT_GROUP_SCHED + /* +diff --git a/kernel/sched/core.c b/kernel/sched/core.c +index 2000e06..79cf3d8 100644 +--- a/kernel/sched/core.c ++++ b/kernel/sched/core.c +@@ -3907,6 +3907,8 @@ int can_nice(const struct task_struct *p, const int nice) + /* convert nice value [19,-20] to rlimit style value [1,40] */ + int nice_rlim = 20 - nice; + ++ gr_learn_resource(p, RLIMIT_NICE, nice_rlim, 1); ++ + return (nice_rlim <= task_rlimit(p, RLIMIT_NICE) || + capable(CAP_SYS_NICE)); + } +@@ -3940,7 +3942,8 @@ SYSCALL_DEFINE1(nice, int, increment) + if (nice > 19) + nice = 19; + +- if (increment < 0 && !can_nice(current, nice)) ++ if (increment < 0 && (!can_nice(current, nice) || ++ gr_handle_chroot_nice())) + return -EPERM; + + retval = security_task_setnice(current, nice); +@@ -4097,6 +4100,7 @@ recheck: + unsigned long rlim_rtprio = + task_rlimit(p, RLIMIT_RTPRIO); + ++ gr_learn_resource(p, RLIMIT_RTPRIO, param->sched_priority, 1); + /* can't set/change the rt policy */ + if (policy != p->policy && !rlim_rtprio) + return -EPERM; +diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c +index e955364..eacd2a4 100644 +--- a/kernel/sched/fair.c ++++ b/kernel/sched/fair.c +@@ -5107,7 +5107,7 @@ static void nohz_idle_balance(int this_cpu, enum cpu_idle_type idle) { } + * run_rebalance_domains is triggered when needed from the scheduler tick. + * Also triggered for nohz idle balancing (with nohz_balancing_kick set). + */ +-static void run_rebalance_domains(struct softirq_action *h) ++static void run_rebalance_domains(void) + { + int this_cpu = smp_processor_id(); + struct rq *this_rq = cpu_rq(this_cpu); +diff --git a/kernel/signal.c b/kernel/signal.c +index 17afcaf..4500b05 100644 +--- a/kernel/signal.c ++++ b/kernel/signal.c +@@ -47,12 +47,12 @@ static struct kmem_cache *sigqueue_cachep; + + int print_fatal_signals __read_mostly; + +-static void __user *sig_handler(struct task_struct *t, int sig) ++static __sighandler_t sig_handler(struct task_struct *t, int sig) + { + return t->sighand->action[sig - 1].sa.sa_handler; + } + +-static int sig_handler_ignored(void __user *handler, int sig) ++static int sig_handler_ignored(__sighandler_t handler, int sig) + { + /* Is it explicitly or implicitly ignored? */ + return handler == SIG_IGN || +@@ -61,7 +61,7 @@ static int sig_handler_ignored(void __user *handler, int sig) + + static int sig_task_ignored(struct task_struct *t, int sig, bool force) + { +- void __user *handler; ++ __sighandler_t handler; + + handler = sig_handler(t, sig); + +@@ -365,6 +365,9 @@ __sigqueue_alloc(int sig, struct task_struct *t, gfp_t flags, int override_rlimi + atomic_inc(&user->sigpending); + rcu_read_unlock(); + ++ if (!override_rlimit) ++ gr_learn_resource(t, RLIMIT_SIGPENDING, atomic_read(&user->sigpending), 1); ++ + if (override_rlimit || + atomic_read(&user->sigpending) <= + task_rlimit(t, RLIMIT_SIGPENDING)) { +@@ -489,7 +492,7 @@ flush_signal_handlers(struct task_struct *t, int force_default) + + int unhandled_signal(struct task_struct *tsk, int sig) + { +- void __user *handler = tsk->sighand->action[sig-1].sa.sa_handler; ++ __sighandler_t handler = tsk->sighand->action[sig-1].sa.sa_handler; + if (is_global_init(tsk)) + return 1; + if (handler != SIG_IGN && handler != SIG_DFL) +@@ -816,6 +819,13 @@ static int check_kill_permission(int sig, struct siginfo *info, + } + } + ++ /* allow glibc communication via tgkill to other threads in our ++ thread group */ ++ if ((info == SEND_SIG_NOINFO || info->si_code != SI_TKILL || ++ sig != (SIGRTMIN+1) || task_tgid_vnr(t) != info->si_pid) ++ && gr_handle_signal(t, sig)) ++ return -EPERM; ++ + return security_task_kill(t, info, sig, 0); + } + +@@ -1204,7 +1214,7 @@ __group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p) + return send_signal(sig, info, p, 1); + } + +-static int ++int + specific_send_sig_info(int sig, struct siginfo *info, struct task_struct *t) + { + return send_signal(sig, info, t, 0); +@@ -1241,6 +1251,7 @@ force_sig_info(int sig, struct siginfo *info, struct task_struct *t) + unsigned long int flags; + int ret, blocked, ignored; + struct k_sigaction *action; ++ int is_unhandled = 0; + + spin_lock_irqsave(&t->sighand->siglock, flags); + action = &t->sighand->action[sig-1]; +@@ -1255,9 +1266,18 @@ force_sig_info(int sig, struct siginfo *info, struct task_struct *t) + } + if (action->sa.sa_handler == SIG_DFL) + t->signal->flags &= ~SIGNAL_UNKILLABLE; ++ if (action->sa.sa_handler == SIG_IGN || action->sa.sa_handler == SIG_DFL) ++ is_unhandled = 1; + ret = specific_send_sig_info(sig, info, t); + spin_unlock_irqrestore(&t->sighand->siglock, flags); + ++ /* only deal with unhandled signals, java etc trigger SIGSEGV during ++ normal operation */ ++ if (is_unhandled) { ++ gr_log_signal(sig, !is_si_special(info) ? info->si_addr : NULL, t); ++ gr_handle_crash(t, sig); ++ } ++ + return ret; + } + +@@ -1324,8 +1344,11 @@ int group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p) + ret = check_kill_permission(sig, info, p); + rcu_read_unlock(); + +- if (!ret && sig) ++ if (!ret && sig) { + ret = do_send_sig_info(sig, info, p, true); ++ if (!ret) ++ gr_log_signal(sig, !is_si_special(info) ? info->si_addr : NULL, p); ++ } + + return ret; + } +@@ -2840,7 +2863,15 @@ do_send_specific(pid_t tgid, pid_t pid, int sig, struct siginfo *info) + int error = -ESRCH; + + rcu_read_lock(); +- p = find_task_by_vpid(pid); ++#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK ++ /* allow glibc communication via tgkill to other threads in our ++ thread group */ ++ if (grsec_enable_chroot_findtask && info->si_code == SI_TKILL && ++ sig == (SIGRTMIN+1) && tgid == info->si_pid) ++ p = find_task_by_vpid_unrestricted(pid); ++ else ++#endif ++ p = find_task_by_vpid(pid); + if (p && (tgid <= 0 || task_tgid_vnr(p) == tgid)) { + error = check_kill_permission(sig, info, p); + /* +diff --git a/kernel/smp.c b/kernel/smp.c +index 2f8b10e..a41bc14 100644 +--- a/kernel/smp.c ++++ b/kernel/smp.c +@@ -580,22 +580,22 @@ int smp_call_function(smp_call_func_t func, void *info, int wait) + } + EXPORT_SYMBOL(smp_call_function); + +-void ipi_call_lock(void) ++void ipi_call_lock(void) __acquires(call_function.lock) + { + raw_spin_lock(&call_function.lock); + } + +-void ipi_call_unlock(void) ++void ipi_call_unlock(void) __releases(call_function.lock) + { + raw_spin_unlock(&call_function.lock); + } + +-void ipi_call_lock_irq(void) ++void ipi_call_lock_irq(void) __acquires(call_function.lock) + { + raw_spin_lock_irq(&call_function.lock); + } + +-void ipi_call_unlock_irq(void) ++void ipi_call_unlock_irq(void) __releases(call_function.lock) + { + raw_spin_unlock_irq(&call_function.lock); + } +diff --git a/kernel/softirq.c b/kernel/softirq.c +index 671f959..91c51cb 100644 +--- a/kernel/softirq.c ++++ b/kernel/softirq.c +@@ -56,7 +56,7 @@ static struct softirq_action softirq_vec[NR_SOFTIRQS] __cacheline_aligned_in_smp + + DEFINE_PER_CPU(struct task_struct *, ksoftirqd); + +-char *softirq_to_name[NR_SOFTIRQS] = { ++const char * const softirq_to_name[NR_SOFTIRQS] = { + "HI", "TIMER", "NET_TX", "NET_RX", "BLOCK", "BLOCK_IOPOLL", + "TASKLET", "SCHED", "HRTIMER", "RCU" + }; +@@ -235,7 +235,7 @@ restart: + kstat_incr_softirqs_this_cpu(vec_nr); + + trace_softirq_entry(vec_nr); +- h->action(h); ++ h->action(); + trace_softirq_exit(vec_nr); + if (unlikely(prev_count != preempt_count())) { + printk(KERN_ERR "huh, entered softirq %u %s %p" +@@ -381,9 +381,11 @@ void __raise_softirq_irqoff(unsigned int nr) + or_softirq_pending(1UL << nr); + } + +-void open_softirq(int nr, void (*action)(struct softirq_action *)) ++void open_softirq(int nr, void (*action)(void)) + { +- softirq_vec[nr].action = action; ++ pax_open_kernel(); ++ *(void **)&softirq_vec[nr].action = action; ++ pax_close_kernel(); + } + + /* +@@ -437,7 +439,7 @@ void __tasklet_hi_schedule_first(struct tasklet_struct *t) + + EXPORT_SYMBOL(__tasklet_hi_schedule_first); + +-static void tasklet_action(struct softirq_action *a) ++static void tasklet_action(void) + { + struct tasklet_struct *list; + +@@ -472,7 +474,7 @@ static void tasklet_action(struct softirq_action *a) + } + } + +-static void tasklet_hi_action(struct softirq_action *a) ++static void tasklet_hi_action(void) + { + struct tasklet_struct *list; + +diff --git a/kernel/sys.c b/kernel/sys.c +index e7006eb..8fb7c51 100644 +--- a/kernel/sys.c ++++ b/kernel/sys.c +@@ -158,6 +158,12 @@ static int set_one_prio(struct task_struct *p, int niceval, int error) + error = -EACCES; + goto out; + } ++ ++ if (gr_handle_chroot_setpriority(p, niceval)) { ++ error = -EACCES; ++ goto out; ++ } ++ + no_nice = security_task_setnice(p, niceval); + if (no_nice) { + error = no_nice; +@@ -581,6 +587,9 @@ SYSCALL_DEFINE2(setregid, gid_t, rgid, gid_t, egid) + goto error; + } + ++ if (gr_check_group_change(new->gid, new->egid, -1)) ++ goto error; ++ + if (rgid != (gid_t) -1 || + (egid != (gid_t) -1 && egid != old->gid)) + new->sgid = new->egid; +@@ -610,6 +619,10 @@ SYSCALL_DEFINE1(setgid, gid_t, gid) + old = current_cred(); + + retval = -EPERM; ++ ++ if (gr_check_group_change(gid, gid, gid)) ++ goto error; ++ + if (nsown_capable(CAP_SETGID)) + new->gid = new->egid = new->sgid = new->fsgid = gid; + else if (gid == old->gid || gid == old->sgid) +@@ -627,7 +640,7 @@ error: + /* + * change the user struct in a credentials set to match the new UID + */ +-static int set_user(struct cred *new) ++int set_user(struct cred *new) + { + struct user_struct *new_user; + +@@ -697,6 +710,9 @@ SYSCALL_DEFINE2(setreuid, uid_t, ruid, uid_t, euid) + goto error; + } + ++ if (gr_check_user_change(new->uid, new->euid, -1)) ++ goto error; ++ + if (new->uid != old->uid) { + retval = set_user(new); + if (retval < 0) +@@ -741,6 +757,12 @@ SYSCALL_DEFINE1(setuid, uid_t, uid) + old = current_cred(); + + retval = -EPERM; ++ ++ if (gr_check_crash_uid(uid)) ++ goto error; ++ if (gr_check_user_change(uid, uid, uid)) ++ goto error; ++ + if (nsown_capable(CAP_SETUID)) { + new->suid = new->uid = uid; + if (uid != old->uid) { +@@ -795,6 +817,9 @@ SYSCALL_DEFINE3(setresuid, uid_t, ruid, uid_t, euid, uid_t, suid) + goto error; + } + ++ if (gr_check_user_change(ruid, euid, -1)) ++ goto error; ++ + if (ruid != (uid_t) -1) { + new->uid = ruid; + if (ruid != old->uid) { +@@ -859,6 +884,9 @@ SYSCALL_DEFINE3(setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid) + goto error; + } + ++ if (gr_check_group_change(rgid, egid, -1)) ++ goto error; ++ + if (rgid != (gid_t) -1) + new->gid = rgid; + if (egid != (gid_t) -1) +@@ -905,6 +933,9 @@ SYSCALL_DEFINE1(setfsuid, uid_t, uid) + old = current_cred(); + old_fsuid = old->fsuid; + ++ if (gr_check_user_change(-1, -1, uid)) ++ goto error; ++ + if (uid == old->uid || uid == old->euid || + uid == old->suid || uid == old->fsuid || + nsown_capable(CAP_SETUID)) { +@@ -915,6 +946,7 @@ SYSCALL_DEFINE1(setfsuid, uid_t, uid) + } + } + ++error: + abort_creds(new); + return old_fsuid; + +@@ -941,12 +973,16 @@ SYSCALL_DEFINE1(setfsgid, gid_t, gid) + if (gid == old->gid || gid == old->egid || + gid == old->sgid || gid == old->fsgid || + nsown_capable(CAP_SETGID)) { ++ if (gr_check_group_change(-1, -1, gid)) ++ goto error; ++ + if (gid != old_fsgid) { + new->fsgid = gid; + goto change_okay; + } + } + ++error: + abort_creds(new); + return old_fsgid; + +@@ -1198,7 +1234,10 @@ static int override_release(char __user *release, int len) + } + v = ((LINUX_VERSION_CODE >> 8) & 0xff) + 40; + snprintf(buf, len, "2.6.%u%s", v, rest); +- ret = copy_to_user(release, buf, len); ++ if (len > sizeof(buf)) ++ ret = -EFAULT; ++ else ++ ret = copy_to_user(release, buf, len); + } + return ret; + } +@@ -1252,19 +1291,19 @@ SYSCALL_DEFINE1(olduname, struct oldold_utsname __user *, name) + return -EFAULT; + + down_read(&uts_sem); +- error = __copy_to_user(&name->sysname, &utsname()->sysname, ++ error = __copy_to_user(name->sysname, &utsname()->sysname, + __OLD_UTS_LEN); + error |= __put_user(0, name->sysname + __OLD_UTS_LEN); +- error |= __copy_to_user(&name->nodename, &utsname()->nodename, ++ error |= __copy_to_user(name->nodename, &utsname()->nodename, + __OLD_UTS_LEN); + error |= __put_user(0, name->nodename + __OLD_UTS_LEN); +- error |= __copy_to_user(&name->release, &utsname()->release, ++ error |= __copy_to_user(name->release, &utsname()->release, + __OLD_UTS_LEN); + error |= __put_user(0, name->release + __OLD_UTS_LEN); +- error |= __copy_to_user(&name->version, &utsname()->version, ++ error |= __copy_to_user(name->version, &utsname()->version, + __OLD_UTS_LEN); + error |= __put_user(0, name->version + __OLD_UTS_LEN); +- error |= __copy_to_user(&name->machine, &utsname()->machine, ++ error |= __copy_to_user(name->machine, &utsname()->machine, + __OLD_UTS_LEN); + error |= __put_user(0, name->machine + __OLD_UTS_LEN); + up_read(&uts_sem); +@@ -1847,7 +1886,7 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, + error = get_dumpable(me->mm); + break; + case PR_SET_DUMPABLE: +- if (arg2 < 0 || arg2 > 1) { ++ if (arg2 > 1) { + error = -EINVAL; + break; + } +diff --git a/kernel/sysctl.c b/kernel/sysctl.c +index 4ab1187..0b75ced 100644 +--- a/kernel/sysctl.c ++++ b/kernel/sysctl.c +@@ -91,7 +91,6 @@ + + + #if defined(CONFIG_SYSCTL) +- + /* External variables not in a header file. */ + extern int sysctl_overcommit_memory; + extern int sysctl_overcommit_ratio; +@@ -169,10 +168,8 @@ static int proc_taint(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos); + #endif + +-#ifdef CONFIG_PRINTK + static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos); +-#endif + + #ifdef CONFIG_MAGIC_SYSRQ + /* Note: sysrq code uses it's own private copy */ +@@ -196,6 +193,8 @@ static int sysrq_sysctl_handler(ctl_table *table, int write, + + #endif + ++extern struct ctl_table grsecurity_table[]; ++ + static struct ctl_table kern_table[]; + static struct ctl_table vm_table[]; + static struct ctl_table fs_table[]; +@@ -210,6 +209,20 @@ extern struct ctl_table epoll_table[]; + int sysctl_legacy_va_layout; + #endif + ++#ifdef CONFIG_PAX_SOFTMODE ++static ctl_table pax_table[] = { ++ { ++ .procname = "softmode", ++ .data = &pax_softmode, ++ .maxlen = sizeof(unsigned int), ++ .mode = 0600, ++ .proc_handler = &proc_dointvec, ++ }, ++ ++ { } ++}; ++#endif ++ + /* The default sysctl tables: */ + + static struct ctl_table sysctl_base_table[] = { +@@ -256,6 +269,22 @@ static int max_extfrag_threshold = 1000; + #endif + + static struct ctl_table kern_table[] = { ++#if defined(CONFIG_GRKERNSEC_SYSCTL) || defined(CONFIG_GRKERNSEC_ROFS) ++ { ++ .procname = "grsecurity", ++ .mode = 0500, ++ .child = grsecurity_table, ++ }, ++#endif ++ ++#ifdef CONFIG_PAX_SOFTMODE ++ { ++ .procname = "pax", ++ .mode = 0500, ++ .child = pax_table, ++ }, ++#endif ++ + { + .procname = "sched_child_runs_first", + .data = &sysctl_sched_child_runs_first, +@@ -540,7 +569,7 @@ static struct ctl_table kern_table[] = { + .data = &modprobe_path, + .maxlen = KMOD_PATH_LEN, + .mode = 0644, +- .proc_handler = proc_dostring, ++ .proc_handler = proc_dostring_modpriv, + }, + { + .procname = "modules_disabled", +@@ -707,16 +736,20 @@ static struct ctl_table kern_table[] = { + .extra1 = &zero, + .extra2 = &one, + }, ++#endif + { + .procname = "kptr_restrict", + .data = &kptr_restrict, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax_sysadmin, ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ .extra1 = &two, ++#else + .extra1 = &zero, ++#endif + .extra2 = &two, + }, +-#endif + { + .procname = "ngroups_max", + .data = &ngroups_max, +@@ -1215,6 +1248,13 @@ static struct ctl_table vm_table[] = { + .proc_handler = proc_dointvec_minmax, + .extra1 = &zero, + }, ++ { ++ .procname = "heap_stack_gap", ++ .data = &sysctl_heap_stack_gap, ++ .maxlen = sizeof(sysctl_heap_stack_gap), ++ .mode = 0644, ++ .proc_handler = proc_doulongvec_minmax, ++ }, + #else + { + .procname = "nr_trim_pages", +@@ -1645,6 +1685,16 @@ int proc_dostring(struct ctl_table *table, int write, + buffer, lenp, ppos); + } + ++int proc_dostring_modpriv(struct ctl_table *table, int write, ++ void __user *buffer, size_t *lenp, loff_t *ppos) ++{ ++ if (write && !capable(CAP_SYS_MODULE)) ++ return -EPERM; ++ ++ return _proc_do_string(table->data, table->maxlen, write, ++ buffer, lenp, ppos); ++} ++ + static size_t proc_skip_spaces(char **buf) + { + size_t ret; +@@ -1750,6 +1800,8 @@ static int proc_put_long(void __user **buf, size_t *size, unsigned long val, + len = strlen(tmp); + if (len > *size) + len = *size; ++ if (len > sizeof(tmp)) ++ len = sizeof(tmp); + if (copy_to_user(*buf, tmp, len)) + return -EFAULT; + *size -= len; +@@ -1942,7 +1994,6 @@ static int proc_taint(struct ctl_table *table, int write, + return err; + } + +-#ifdef CONFIG_PRINTK + static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) + { +@@ -1951,7 +2002,6 @@ static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write, + + return proc_dointvec_minmax(table, write, buffer, lenp, ppos); + } +-#endif + + struct do_proc_dointvec_minmax_conv_param { + int *min; +@@ -2066,8 +2116,11 @@ static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int + *i = val; + } else { + val = convdiv * (*i) / convmul; +- if (!first) ++ if (!first) { + err = proc_put_char(&buffer, &left, '\t'); ++ if (err) ++ break; ++ } + err = proc_put_long(&buffer, &left, val, false); + if (err) + break; +@@ -2459,6 +2512,12 @@ int proc_dostring(struct ctl_table *table, int write, + return -ENOSYS; + } + ++int proc_dostring_modpriv(struct ctl_table *table, int write, ++ void __user *buffer, size_t *lenp, loff_t *ppos) ++{ ++ return -ENOSYS; ++} ++ + int proc_dointvec(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) + { +@@ -2515,5 +2574,6 @@ EXPORT_SYMBOL(proc_dointvec_minmax); + EXPORT_SYMBOL(proc_dointvec_userhz_jiffies); + EXPORT_SYMBOL(proc_dointvec_ms_jiffies); + EXPORT_SYMBOL(proc_dostring); ++EXPORT_SYMBOL(proc_dostring_modpriv); + EXPORT_SYMBOL(proc_doulongvec_minmax); + EXPORT_SYMBOL(proc_doulongvec_ms_jiffies_minmax); +diff --git a/kernel/sysctl_binary.c b/kernel/sysctl_binary.c +index a650694..aaeeb20 100644 +--- a/kernel/sysctl_binary.c ++++ b/kernel/sysctl_binary.c +@@ -989,7 +989,7 @@ static ssize_t bin_intvec(struct file *file, + int i; + + set_fs(KERNEL_DS); +- result = vfs_read(file, buffer, BUFSZ - 1, &pos); ++ result = vfs_read(file, (char __force_user *)buffer, BUFSZ - 1, &pos); + set_fs(old_fs); + if (result < 0) + goto out_kfree; +@@ -1034,7 +1034,7 @@ static ssize_t bin_intvec(struct file *file, + } + + set_fs(KERNEL_DS); +- result = vfs_write(file, buffer, str - buffer, &pos); ++ result = vfs_write(file, (const char __force_user *)buffer, str - buffer, &pos); + set_fs(old_fs); + if (result < 0) + goto out_kfree; +@@ -1067,7 +1067,7 @@ static ssize_t bin_ulongvec(struct file *file, + int i; + + set_fs(KERNEL_DS); +- result = vfs_read(file, buffer, BUFSZ - 1, &pos); ++ result = vfs_read(file, (char __force_user *)buffer, BUFSZ - 1, &pos); + set_fs(old_fs); + if (result < 0) + goto out_kfree; +@@ -1112,7 +1112,7 @@ static ssize_t bin_ulongvec(struct file *file, + } + + set_fs(KERNEL_DS); +- result = vfs_write(file, buffer, str - buffer, &pos); ++ result = vfs_write(file, (const char __force_user *)buffer, str - buffer, &pos); + set_fs(old_fs); + if (result < 0) + goto out_kfree; +@@ -1138,7 +1138,7 @@ static ssize_t bin_uuid(struct file *file, + int i; + + set_fs(KERNEL_DS); +- result = vfs_read(file, buf, sizeof(buf) - 1, &pos); ++ result = vfs_read(file, (char __force_user *)buf, sizeof(buf) - 1, &pos); + set_fs(old_fs); + if (result < 0) + goto out; +@@ -1185,7 +1185,7 @@ static ssize_t bin_dn_node_address(struct file *file, + __le16 dnaddr; + + set_fs(KERNEL_DS); +- result = vfs_read(file, buf, sizeof(buf) - 1, &pos); ++ result = vfs_read(file, (char __force_user *)buf, sizeof(buf) - 1, &pos); + set_fs(old_fs); + if (result < 0) + goto out; +@@ -1233,7 +1233,7 @@ static ssize_t bin_dn_node_address(struct file *file, + le16_to_cpu(dnaddr) & 0x3ff); + + set_fs(KERNEL_DS); +- result = vfs_write(file, buf, len, &pos); ++ result = vfs_write(file, (const char __force_user *)buf, len, &pos); + set_fs(old_fs); + if (result < 0) + goto out; +diff --git a/kernel/taskstats.c b/kernel/taskstats.c +index e660464..c8b9e67 100644 +--- a/kernel/taskstats.c ++++ b/kernel/taskstats.c +@@ -27,9 +27,12 @@ + #include <linux/cgroup.h> + #include <linux/fs.h> + #include <linux/file.h> ++#include <linux/grsecurity.h> + #include <net/genetlink.h> + #include <linux/atomic.h> + ++extern int gr_is_taskstats_denied(int pid); ++ + /* + * Maximum length of a cpumask that can be specified in + * the TASKSTATS_CMD_ATTR_REGISTER/DEREGISTER_CPUMASK attribute +@@ -556,6 +559,9 @@ err: + + static int taskstats_user_cmd(struct sk_buff *skb, struct genl_info *info) + { ++ if (gr_is_taskstats_denied(current->pid)) ++ return -EACCES; ++ + if (info->attrs[TASKSTATS_CMD_ATTR_REGISTER_CPUMASK]) + return cmd_attr_register_cpumask(info); + else if (info->attrs[TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK]) +diff --git a/kernel/time.c b/kernel/time.c +index ba744cf..267b7c5 100644 +--- a/kernel/time.c ++++ b/kernel/time.c +@@ -163,6 +163,11 @@ int do_sys_settimeofday(const struct timespec *tv, const struct timezone *tz) + return error; + + if (tz) { ++ /* we log in do_settimeofday called below, so don't log twice ++ */ ++ if (!tv) ++ gr_log_timechange(); ++ + sys_tz = *tz; + update_vsyscall_tz(); + if (firsttime) { +diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c +index 8a538c5..def79d4 100644 +--- a/kernel/time/alarmtimer.c ++++ b/kernel/time/alarmtimer.c +@@ -779,7 +779,7 @@ static int __init alarmtimer_init(void) + struct platform_device *pdev; + int error = 0; + int i; +- struct k_clock alarm_clock = { ++ static struct k_clock alarm_clock = { + .clock_getres = alarm_clock_getres, + .clock_get = alarm_clock_get, + .timer_create = alarm_timer_create, +diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c +index f113755..ec24223 100644 +--- a/kernel/time/tick-broadcast.c ++++ b/kernel/time/tick-broadcast.c +@@ -115,7 +115,7 @@ int tick_device_uses_broadcast(struct clock_event_device *dev, int cpu) + * then clear the broadcast bit. + */ + if (!(dev->features & CLOCK_EVT_FEAT_C3STOP)) { +- int cpu = smp_processor_id(); ++ cpu = smp_processor_id(); + + cpumask_clear_cpu(cpu, tick_get_broadcast_mask()); + tick_broadcast_clear_oneshot(cpu); +diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c +index d42574df..247414c 100644 +--- a/kernel/time/timekeeping.c ++++ b/kernel/time/timekeeping.c +@@ -14,6 +14,7 @@ + #include <linux/init.h> + #include <linux/mm.h> + #include <linux/sched.h> ++#include <linux/grsecurity.h> + #include <linux/syscore_ops.h> + #include <linux/clocksource.h> + #include <linux/jiffies.h> +@@ -373,6 +374,8 @@ int do_settimeofday(const struct timespec *tv) + if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC) + return -EINVAL; + ++ gr_log_timechange(); ++ + write_seqlock_irqsave(&timekeeper.lock, flags); + + timekeeping_forward_now(); +diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c +index 3258455..f35227d 100644 +--- a/kernel/time/timer_list.c ++++ b/kernel/time/timer_list.c +@@ -38,12 +38,16 @@ DECLARE_PER_CPU(struct hrtimer_cpu_base, hrtimer_bases); + + static void print_name_offset(struct seq_file *m, void *sym) + { ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ SEQ_printf(m, "<%p>", NULL); ++#else + char symname[KSYM_NAME_LEN]; + + if (lookup_symbol_name((unsigned long)sym, symname) < 0) + SEQ_printf(m, "<%pK>", sym); + else + SEQ_printf(m, "%s", symname); ++#endif + } + + static void +@@ -112,7 +116,11 @@ next_one: + static void + print_base(struct seq_file *m, struct hrtimer_clock_base *base, u64 now) + { ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ SEQ_printf(m, " .base: %p\n", NULL); ++#else + SEQ_printf(m, " .base: %pK\n", base); ++#endif + SEQ_printf(m, " .index: %d\n", + base->index); + SEQ_printf(m, " .resolution: %Lu nsecs\n", +@@ -293,7 +301,11 @@ static int __init init_timer_list_procfs(void) + { + struct proc_dir_entry *pe; + ++#ifdef CONFIG_GRKERNSEC_PROC_ADD ++ pe = proc_create("timer_list", 0400, NULL, &timer_list_fops); ++#else + pe = proc_create("timer_list", 0444, NULL, &timer_list_fops); ++#endif + if (!pe) + return -ENOMEM; + return 0; +diff --git a/kernel/time/timer_stats.c b/kernel/time/timer_stats.c +index 0b537f2..9e71eca 100644 +--- a/kernel/time/timer_stats.c ++++ b/kernel/time/timer_stats.c +@@ -116,7 +116,7 @@ static ktime_t time_start, time_stop; + static unsigned long nr_entries; + static struct entry entries[MAX_ENTRIES]; + +-static atomic_t overflow_count; ++static atomic_unchecked_t overflow_count; + + /* + * The entries are in a hash-table, for fast lookup: +@@ -140,7 +140,7 @@ static void reset_entries(void) + nr_entries = 0; + memset(entries, 0, sizeof(entries)); + memset(tstat_hash_table, 0, sizeof(tstat_hash_table)); +- atomic_set(&overflow_count, 0); ++ atomic_set_unchecked(&overflow_count, 0); + } + + static struct entry *alloc_entry(void) +@@ -261,7 +261,7 @@ void timer_stats_update_stats(void *timer, pid_t pid, void *startf, + if (likely(entry)) + entry->count++; + else +- atomic_inc(&overflow_count); ++ atomic_inc_unchecked(&overflow_count); + + out_unlock: + raw_spin_unlock_irqrestore(lock, flags); +@@ -269,12 +269,16 @@ void timer_stats_update_stats(void *timer, pid_t pid, void *startf, + + static void print_name_offset(struct seq_file *m, unsigned long addr) + { ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ seq_printf(m, "<%p>", NULL); ++#else + char symname[KSYM_NAME_LEN]; + + if (lookup_symbol_name(addr, symname) < 0) + seq_printf(m, "<%p>", (void *)addr); + else + seq_printf(m, "%s", symname); ++#endif + } + + static int tstats_show(struct seq_file *m, void *v) +@@ -300,9 +304,9 @@ static int tstats_show(struct seq_file *m, void *v) + + seq_puts(m, "Timer Stats Version: v0.2\n"); + seq_printf(m, "Sample period: %ld.%03ld s\n", period.tv_sec, ms); +- if (atomic_read(&overflow_count)) ++ if (atomic_read_unchecked(&overflow_count)) + seq_printf(m, "Overflow: %d entries\n", +- atomic_read(&overflow_count)); ++ atomic_read_unchecked(&overflow_count)); + + for (i = 0; i < nr_entries; i++) { + entry = entries + i; +@@ -417,7 +421,11 @@ static int __init init_tstats_procfs(void) + { + struct proc_dir_entry *pe; + ++#ifdef CONFIG_GRKERNSEC_PROC_ADD ++ pe = proc_create("timer_stats", 0600, NULL, &tstats_fops); ++#else + pe = proc_create("timer_stats", 0644, NULL, &tstats_fops); ++#endif + if (!pe) + return -ENOMEM; + return 0; +diff --git a/kernel/timer.c b/kernel/timer.c +index a297ffc..5e16b0b 100644 +--- a/kernel/timer.c ++++ b/kernel/timer.c +@@ -1354,7 +1354,7 @@ void update_process_times(int user_tick) + /* + * This function runs timers and the timer-tq in bottom half context. + */ +-static void run_timer_softirq(struct softirq_action *h) ++static void run_timer_softirq(void) + { + struct tvec_base *base = __this_cpu_read(tvec_bases); + +diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c +index c0bd030..62a1927 100644 +--- a/kernel/trace/blktrace.c ++++ b/kernel/trace/blktrace.c +@@ -317,7 +317,7 @@ static ssize_t blk_dropped_read(struct file *filp, char __user *buffer, + struct blk_trace *bt = filp->private_data; + char buf[16]; + +- snprintf(buf, sizeof(buf), "%u\n", atomic_read(&bt->dropped)); ++ snprintf(buf, sizeof(buf), "%u\n", atomic_read_unchecked(&bt->dropped)); + + return simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf)); + } +@@ -375,7 +375,7 @@ static int blk_subbuf_start_callback(struct rchan_buf *buf, void *subbuf, + return 1; + + bt = buf->chan->private_data; +- atomic_inc(&bt->dropped); ++ atomic_inc_unchecked(&bt->dropped); + return 0; + } + +@@ -476,7 +476,7 @@ int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev, + + bt->dir = dir; + bt->dev = dev; +- atomic_set(&bt->dropped, 0); ++ atomic_set_unchecked(&bt->dropped, 0); + + ret = -EIO; + bt->dropped_file = debugfs_create_file("dropped", 0444, dir, bt, +diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c +index 0fa92f6..89950b2 100644 +--- a/kernel/trace/ftrace.c ++++ b/kernel/trace/ftrace.c +@@ -1800,12 +1800,17 @@ ftrace_code_disable(struct module *mod, struct dyn_ftrace *rec) + if (unlikely(ftrace_disabled)) + return 0; + ++ ret = ftrace_arch_code_modify_prepare(); ++ FTRACE_WARN_ON(ret); ++ if (ret) ++ return 0; ++ + ret = ftrace_make_nop(mod, rec, MCOUNT_ADDR); ++ FTRACE_WARN_ON(ftrace_arch_code_modify_post_process()); + if (ret) { + ftrace_bug(ret, ip); +- return 0; + } +- return 1; ++ return ret ? 0 : 1; + } + + /* +@@ -2917,7 +2922,7 @@ static void ftrace_free_entry_rcu(struct rcu_head *rhp) + + int + register_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops, +- void *data) ++ void *data) + { + struct ftrace_func_probe *entry; + struct ftrace_page *pg; +diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c +index 55e4d4c..8c915ec 100644 +--- a/kernel/trace/trace.c ++++ b/kernel/trace/trace.c +@@ -4316,10 +4316,9 @@ static const struct file_operations tracing_dyn_info_fops = { + }; + #endif + +-static struct dentry *d_tracer; +- + struct dentry *tracing_init_dentry(void) + { ++ static struct dentry *d_tracer; + static int once; + + if (d_tracer) +@@ -4339,10 +4338,9 @@ struct dentry *tracing_init_dentry(void) + return d_tracer; + } + +-static struct dentry *d_percpu; +- + struct dentry *tracing_dentry_percpu(void) + { ++ static struct dentry *d_percpu; + static int once; + struct dentry *d_tracer; + +diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c +index 29111da..d190fe2 100644 +--- a/kernel/trace/trace_events.c ++++ b/kernel/trace/trace_events.c +@@ -1308,10 +1308,6 @@ static LIST_HEAD(ftrace_module_file_list); + struct ftrace_module_file_ops { + struct list_head list; + struct module *mod; +- struct file_operations id; +- struct file_operations enable; +- struct file_operations format; +- struct file_operations filter; + }; + + static struct ftrace_module_file_ops * +@@ -1332,17 +1328,12 @@ trace_create_file_ops(struct module *mod) + + file_ops->mod = mod; + +- file_ops->id = ftrace_event_id_fops; +- file_ops->id.owner = mod; +- +- file_ops->enable = ftrace_enable_fops; +- file_ops->enable.owner = mod; +- +- file_ops->filter = ftrace_event_filter_fops; +- file_ops->filter.owner = mod; +- +- file_ops->format = ftrace_event_format_fops; +- file_ops->format.owner = mod; ++ pax_open_kernel(); ++ *(void **)&mod->trace_id.owner = mod; ++ *(void **)&mod->trace_enable.owner = mod; ++ *(void **)&mod->trace_filter.owner = mod; ++ *(void **)&mod->trace_format.owner = mod; ++ pax_close_kernel(); + + list_add(&file_ops->list, &ftrace_module_file_list); + +@@ -1366,8 +1357,8 @@ static void trace_module_add_events(struct module *mod) + + for_each_event(call, start, end) { + __trace_add_event_call(*call, mod, +- &file_ops->id, &file_ops->enable, +- &file_ops->filter, &file_ops->format); ++ &mod->trace_id, &mod->trace_enable, ++ &mod->trace_filter, &mod->trace_format); + } + } + +diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c +index 580a05e..9b31acb 100644 +--- a/kernel/trace/trace_kprobe.c ++++ b/kernel/trace/trace_kprobe.c +@@ -217,7 +217,7 @@ static __kprobes void FETCH_FUNC_NAME(memory, string)(struct pt_regs *regs, + long ret; + int maxlen = get_rloc_len(*(u32 *)dest); + u8 *dst = get_rloc_data(dest); +- u8 *src = addr; ++ const u8 __user *src = (const u8 __force_user *)addr; + mm_segment_t old_fs = get_fs(); + if (!maxlen) + return; +@@ -229,7 +229,7 @@ static __kprobes void FETCH_FUNC_NAME(memory, string)(struct pt_regs *regs, + pagefault_disable(); + do + ret = __copy_from_user_inatomic(dst++, src++, 1); +- while (dst[-1] && ret == 0 && src - (u8 *)addr < maxlen); ++ while (dst[-1] && ret == 0 && src - (const u8 __force_user *)addr < maxlen); + dst[-1] = '\0'; + pagefault_enable(); + set_fs(old_fs); +@@ -238,7 +238,7 @@ static __kprobes void FETCH_FUNC_NAME(memory, string)(struct pt_regs *regs, + ((u8 *)get_rloc_data(dest))[0] = '\0'; + *(u32 *)dest = make_data_rloc(0, get_rloc_offs(*(u32 *)dest)); + } else +- *(u32 *)dest = make_data_rloc(src - (u8 *)addr, ++ *(u32 *)dest = make_data_rloc(src - (const u8 __force_user *)addr, + get_rloc_offs(*(u32 *)dest)); + } + /* Return the length of string -- including null terminal byte */ +@@ -252,7 +252,7 @@ static __kprobes void FETCH_FUNC_NAME(memory, string_size)(struct pt_regs *regs, + set_fs(KERNEL_DS); + pagefault_disable(); + do { +- ret = __copy_from_user_inatomic(&c, (u8 *)addr + len, 1); ++ ret = __copy_from_user_inatomic(&c, (const u8 __force_user *)addr + len, 1); + len++; + } while (c && ret == 0 && len < MAX_STRING_SIZE); + pagefault_enable(); +diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c +index fd3c8aa..5f324a6 100644 +--- a/kernel/trace/trace_mmiotrace.c ++++ b/kernel/trace/trace_mmiotrace.c +@@ -24,7 +24,7 @@ struct header_iter { + static struct trace_array *mmio_trace_array; + static bool overrun_detected; + static unsigned long prev_overruns; +-static atomic_t dropped_count; ++static atomic_unchecked_t dropped_count; + + static void mmio_reset_data(struct trace_array *tr) + { +@@ -127,7 +127,7 @@ static void mmio_close(struct trace_iterator *iter) + + static unsigned long count_overruns(struct trace_iterator *iter) + { +- unsigned long cnt = atomic_xchg(&dropped_count, 0); ++ unsigned long cnt = atomic_xchg_unchecked(&dropped_count, 0); + unsigned long over = ring_buffer_overruns(iter->tr->buffer); + + if (over > prev_overruns) +@@ -317,7 +317,7 @@ static void __trace_mmiotrace_rw(struct trace_array *tr, + event = trace_buffer_lock_reserve(buffer, TRACE_MMIO_RW, + sizeof(*entry), 0, pc); + if (!event) { +- atomic_inc(&dropped_count); ++ atomic_inc_unchecked(&dropped_count); + return; + } + entry = ring_buffer_event_data(event); +@@ -347,7 +347,7 @@ static void __trace_mmiotrace_map(struct trace_array *tr, + event = trace_buffer_lock_reserve(buffer, TRACE_MMIO_MAP, + sizeof(*entry), 0, pc); + if (!event) { +- atomic_inc(&dropped_count); ++ atomic_inc_unchecked(&dropped_count); + return; + } + entry = ring_buffer_event_data(event); +diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c +index df611a0..10d8b32 100644 +--- a/kernel/trace/trace_output.c ++++ b/kernel/trace/trace_output.c +@@ -278,7 +278,7 @@ int trace_seq_path(struct trace_seq *s, const struct path *path) + + p = d_path(path, s->buffer + s->len, PAGE_SIZE - s->len); + if (!IS_ERR(p)) { +- p = mangle_path(s->buffer + s->len, p, "\n"); ++ p = mangle_path(s->buffer + s->len, p, "\n\\"); + if (p) { + s->len = p - s->buffer; + return 1; +diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c +index d4545f4..a9010a1 100644 +--- a/kernel/trace/trace_stack.c ++++ b/kernel/trace/trace_stack.c +@@ -53,7 +53,7 @@ static inline void check_stack(void) + return; + + /* we do not handle interrupt stacks yet */ +- if (!object_is_on_stack(&this_size)) ++ if (!object_starts_on_stack(&this_size)) + return; + + local_irq_save(flags); +diff --git a/kernel/trace/trace_workqueue.c b/kernel/trace/trace_workqueue.c +index 209b379..7f76423 100644 +--- a/kernel/trace/trace_workqueue.c ++++ b/kernel/trace/trace_workqueue.c +@@ -22,7 +22,7 @@ struct cpu_workqueue_stats { + int cpu; + pid_t pid; + /* Can be inserted from interrupt or user context, need to be atomic */ +- atomic_t inserted; ++ atomic_unchecked_t inserted; + /* + * Don't need to be atomic, works are serialized in a single workqueue thread + * on a single CPU. +@@ -60,7 +60,7 @@ probe_workqueue_insertion(void *ignore, + spin_lock_irqsave(&workqueue_cpu_stat(cpu)->lock, flags); + list_for_each_entry(node, &workqueue_cpu_stat(cpu)->list, list) { + if (node->pid == wq_thread->pid) { +- atomic_inc(&node->inserted); ++ atomic_inc_unchecked(&node->inserted); + goto found; + } + } +@@ -210,7 +210,7 @@ static int workqueue_stat_show(struct seq_file *s, void *p) + tsk = get_pid_task(pid, PIDTYPE_PID); + if (tsk) { + seq_printf(s, "%3d %6d %6u %s\n", cws->cpu, +- atomic_read(&cws->inserted), cws->executed, ++ atomic_read_unchecked(&cws->inserted), cws->executed, + tsk->comm); + put_task_struct(tsk); + } +diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug +index 6777153..8519f60 100644 +--- a/lib/Kconfig.debug ++++ b/lib/Kconfig.debug +@@ -1132,6 +1132,7 @@ config LATENCYTOP + depends on DEBUG_KERNEL + depends on STACKTRACE_SUPPORT + depends on PROC_FS ++ depends on !GRKERNSEC_HIDESYM + select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND + select KALLSYMS + select KALLSYMS_ALL +diff --git a/lib/bitmap.c b/lib/bitmap.c +index b5a8b6a..a69623c 100644 +--- a/lib/bitmap.c ++++ b/lib/bitmap.c +@@ -421,7 +421,7 @@ int __bitmap_parse(const char *buf, unsigned int buflen, + { + int c, old_c, totaldigits, ndigits, nchunks, nbits; + u32 chunk; +- const char __user __force *ubuf = (const char __user __force *)buf; ++ const char __user *ubuf = (const char __force_user *)buf; + + bitmap_zero(maskp, nmaskbits); + +@@ -506,7 +506,7 @@ int bitmap_parse_user(const char __user *ubuf, + { + if (!access_ok(VERIFY_READ, ubuf, ulen)) + return -EFAULT; +- return __bitmap_parse((const char __force *)ubuf, ++ return __bitmap_parse((const char __force_kernel *)ubuf, + ulen, 1, maskp, nmaskbits); + + } +@@ -598,7 +598,7 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen, + { + unsigned a, b; + int c, old_c, totaldigits; +- const char __user __force *ubuf = (const char __user __force *)buf; ++ const char __user *ubuf = (const char __force_user *)buf; + int exp_digit, in_range; + + totaldigits = c = 0; +@@ -698,7 +698,7 @@ int bitmap_parselist_user(const char __user *ubuf, + { + if (!access_ok(VERIFY_READ, ubuf, ulen)) + return -EFAULT; +- return __bitmap_parselist((const char __force *)ubuf, ++ return __bitmap_parselist((const char __force_kernel *)ubuf, + ulen, 1, maskp, nmaskbits); + } + EXPORT_SYMBOL(bitmap_parselist_user); +diff --git a/lib/bug.c b/lib/bug.c +index a28c141..2bd3d95 100644 +--- a/lib/bug.c ++++ b/lib/bug.c +@@ -133,6 +133,8 @@ enum bug_trap_type report_bug(unsigned long bugaddr, struct pt_regs *regs) + return BUG_TRAP_TYPE_NONE; + + bug = find_bug(bugaddr); ++ if (!bug) ++ return BUG_TRAP_TYPE_NONE; + + file = NULL; + line = 0; +diff --git a/lib/debugobjects.c b/lib/debugobjects.c +index 0ab9ae8..f01ceca 100644 +--- a/lib/debugobjects.c ++++ b/lib/debugobjects.c +@@ -288,7 +288,7 @@ static void debug_object_is_on_stack(void *addr, int onstack) + if (limit > 4) + return; + +- is_on_stack = object_is_on_stack(addr); ++ is_on_stack = object_starts_on_stack(addr); + if (is_on_stack == onstack) + return; + +diff --git a/lib/devres.c b/lib/devres.c +index 80b9c76..9e32279 100644 +--- a/lib/devres.c ++++ b/lib/devres.c +@@ -80,7 +80,7 @@ EXPORT_SYMBOL(devm_ioremap_nocache); + void devm_iounmap(struct device *dev, void __iomem *addr) + { + WARN_ON(devres_destroy(dev, devm_ioremap_release, devm_ioremap_match, +- (void *)addr)); ++ (void __force *)addr)); + iounmap(addr); + } + EXPORT_SYMBOL(devm_iounmap); +@@ -192,7 +192,7 @@ void devm_ioport_unmap(struct device *dev, void __iomem *addr) + { + ioport_unmap(addr); + WARN_ON(devres_destroy(dev, devm_ioport_map_release, +- devm_ioport_map_match, (void *)addr)); ++ devm_ioport_map_match, (void __force *)addr)); + } + EXPORT_SYMBOL(devm_ioport_unmap); + +diff --git a/lib/dma-debug.c b/lib/dma-debug.c +index 13ef233..5241683 100644 +--- a/lib/dma-debug.c ++++ b/lib/dma-debug.c +@@ -924,7 +924,7 @@ out: + + static void check_for_stack(struct device *dev, void *addr) + { +- if (object_is_on_stack(addr)) ++ if (object_starts_on_stack(addr)) + err_printk(dev, NULL, "DMA-API: device driver maps memory from" + "stack [addr=%p]\n", addr); + } +diff --git a/lib/extable.c b/lib/extable.c +index 4cac81e..63e9b8f 100644 +--- a/lib/extable.c ++++ b/lib/extable.c +@@ -13,6 +13,7 @@ + #include <linux/init.h> + #include <linux/sort.h> + #include <asm/uaccess.h> ++#include <asm/pgtable.h> + + #ifndef ARCH_HAS_SORT_EXTABLE + /* +@@ -36,8 +37,10 @@ static int cmp_ex(const void *a, const void *b) + void sort_extable(struct exception_table_entry *start, + struct exception_table_entry *finish) + { ++ pax_open_kernel(); + sort(start, finish - start, sizeof(struct exception_table_entry), + cmp_ex, NULL); ++ pax_close_kernel(); + } + + #ifdef CONFIG_MODULES +diff --git a/lib/inflate.c b/lib/inflate.c +index 013a761..c28f3fc 100644 +--- a/lib/inflate.c ++++ b/lib/inflate.c +@@ -269,7 +269,7 @@ static void free(void *where) + malloc_ptr = free_mem_ptr; + } + #else +-#define malloc(a) kmalloc(a, GFP_KERNEL) ++#define malloc(a) kmalloc((a), GFP_KERNEL) + #define free(a) kfree(a) + #endif + +diff --git a/lib/ioremap.c b/lib/ioremap.c +index 0c9216c..863bd89 100644 +--- a/lib/ioremap.c ++++ b/lib/ioremap.c +@@ -38,7 +38,7 @@ static inline int ioremap_pmd_range(pud_t *pud, unsigned long addr, + unsigned long next; + + phys_addr -= addr; +- pmd = pmd_alloc(&init_mm, pud, addr); ++ pmd = pmd_alloc_kernel(&init_mm, pud, addr); + if (!pmd) + return -ENOMEM; + do { +@@ -56,7 +56,7 @@ static inline int ioremap_pud_range(pgd_t *pgd, unsigned long addr, + unsigned long next; + + phys_addr -= addr; +- pud = pud_alloc(&init_mm, pgd, addr); ++ pud = pud_alloc_kernel(&init_mm, pgd, addr); + if (!pud) + return -ENOMEM; + do { +diff --git a/lib/is_single_threaded.c b/lib/is_single_threaded.c +index bd2bea9..6b3c95e 100644 +--- a/lib/is_single_threaded.c ++++ b/lib/is_single_threaded.c +@@ -22,6 +22,9 @@ bool current_is_single_threaded(void) + struct task_struct *p, *t; + bool ret; + ++ if (!mm) ++ return true; ++ + if (atomic_read(&task->signal->live) != 1) + return false; + +diff --git a/lib/radix-tree.c b/lib/radix-tree.c +index 3ac50dc..240bb7e 100644 +--- a/lib/radix-tree.c ++++ b/lib/radix-tree.c +@@ -79,7 +79,7 @@ struct radix_tree_preload { + int nr; + struct radix_tree_node *nodes[RADIX_TREE_MAX_PATH]; + }; +-static DEFINE_PER_CPU(struct radix_tree_preload, radix_tree_preloads) = { 0, }; ++static DEFINE_PER_CPU(struct radix_tree_preload, radix_tree_preloads); + + static inline void *ptr_to_indirect(void *ptr) + { +diff --git a/lib/vsprintf.c b/lib/vsprintf.c +index abbabec..362988d 100644 +--- a/lib/vsprintf.c ++++ b/lib/vsprintf.c +@@ -16,6 +16,9 @@ + * - scnprintf and vscnprintf + */ + ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++#define __INCLUDED_BY_HIDESYM 1 ++#endif + #include <stdarg.h> + #include <linux/module.h> /* for KSYM_SYMBOL_LEN */ + #include <linux/types.h> +@@ -433,7 +436,7 @@ char *symbol_string(char *buf, char *end, void *ptr, + char sym[KSYM_SYMBOL_LEN]; + if (ext == 'B') + sprint_backtrace(sym, value); +- else if (ext != 'f' && ext != 's') ++ else if (ext != 'f' && ext != 's' && ext != 'a') + sprint_symbol(sym, value); + else + kallsyms_lookup(value, NULL, NULL, NULL, sym); +@@ -809,7 +812,11 @@ char *netdev_feature_string(char *buf, char *end, const u8 *addr, + return number(buf, end, *(const netdev_features_t *)addr, spec); + } + ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++int kptr_restrict __read_mostly = 2; ++#else + int kptr_restrict __read_mostly; ++#endif + + /* + * Show a '%p' thing. A kernel extension is that the '%p' is followed +@@ -823,6 +830,8 @@ int kptr_restrict __read_mostly; + * - 'S' For symbolic direct pointers with offset + * - 's' For symbolic direct pointers without offset + * - 'B' For backtraced symbolic direct pointers with offset ++ * - 'A' For symbolic direct pointers with offset approved for use with GRKERNSEC_HIDESYM ++ * - 'a' For symbolic direct pointers without offset approved for use with GRKERNSEC_HIDESYM + * - 'R' For decoded struct resource, e.g., [mem 0x0-0x1f 64bit pref] + * - 'r' For raw struct resource, e.g., [mem 0x0-0x1f flags 0x201] + * - 'M' For a 6-byte MAC address, it prints the address in the +@@ -868,12 +877,12 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr, + { + if (!ptr && *fmt != 'K') { + /* +- * Print (null) with the same width as a pointer so it makes ++ * Print (nil) with the same width as a pointer so it makes + * tabular output look nice. + */ + if (spec.field_width == -1) + spec.field_width = 2 * sizeof(void *); +- return string(buf, end, "(null)", spec); ++ return string(buf, end, "(nil)", spec); + } + + switch (*fmt) { +@@ -883,6 +892,13 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr, + /* Fallthrough */ + case 'S': + case 's': ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ break; ++#else ++ return symbol_string(buf, end, ptr, spec, *fmt); ++#endif ++ case 'A': ++ case 'a': + case 'B': + return symbol_string(buf, end, ptr, spec, *fmt); + case 'R': +@@ -1653,11 +1669,11 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf) + typeof(type) value; \ + if (sizeof(type) == 8) { \ + args = PTR_ALIGN(args, sizeof(u32)); \ +- *(u32 *)&value = *(u32 *)args; \ +- *((u32 *)&value + 1) = *(u32 *)(args + 4); \ ++ *(u32 *)&value = *(const u32 *)args; \ ++ *((u32 *)&value + 1) = *(const u32 *)(args + 4); \ + } else { \ + args = PTR_ALIGN(args, sizeof(type)); \ +- value = *(typeof(type) *)args; \ ++ value = *(const typeof(type) *)args; \ + } \ + args += sizeof(type); \ + value; \ +@@ -1720,7 +1736,7 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf) + case FORMAT_TYPE_STR: { + const char *str_arg = args; + args += strlen(str_arg) + 1; +- str = string(str, end, (char *)str_arg, spec); ++ str = string(str, end, str_arg, spec); + break; + } + +diff --git a/localversion-grsec b/localversion-grsec +new file mode 100644 +index 0000000..7cd6065 +--- /dev/null ++++ b/localversion-grsec +@@ -0,0 +1 @@ ++-grsec +diff --git a/mm/Kconfig b/mm/Kconfig +index e338407..4210331 100644 +--- a/mm/Kconfig ++++ b/mm/Kconfig +@@ -247,10 +247,10 @@ config KSM + root has set /sys/kernel/mm/ksm/run to 1 (if CONFIG_SYSFS is set). + + config DEFAULT_MMAP_MIN_ADDR +- int "Low address space to protect from user allocation" ++ int "Low address space to protect from user allocation" + depends on MMU +- default 4096 +- help ++ default 65536 ++ help + This is the portion of low virtual memory which should be protected + from userspace allocation. Keeping a user from writing to low pages + can help reduce the impact of kernel NULL pointer bugs. +@@ -280,7 +280,7 @@ config MEMORY_FAILURE + + config HWPOISON_INJECT + tristate "HWPoison pages injector" +- depends on MEMORY_FAILURE && DEBUG_KERNEL && PROC_FS ++ depends on MEMORY_FAILURE && DEBUG_KERNEL && PROC_FS && !GRKERNSEC + select PROC_PAGE_MONITOR + + config NOMMU_INITIAL_TRIM_EXCESS +diff --git a/mm/filemap.c b/mm/filemap.c +index 79c4b2b..596b417 100644 +--- a/mm/filemap.c ++++ b/mm/filemap.c +@@ -1762,7 +1762,7 @@ int generic_file_mmap(struct file * file, struct vm_area_struct * vma) + struct address_space *mapping = file->f_mapping; + + if (!mapping->a_ops->readpage) +- return -ENOEXEC; ++ return -ENODEV; + file_accessed(file); + vma->vm_ops = &generic_file_vm_ops; + vma->vm_flags |= VM_CAN_NONLINEAR; +@@ -2168,6 +2168,7 @@ inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count, i + *pos = i_size_read(inode); + + if (limit != RLIM_INFINITY) { ++ gr_learn_resource(current, RLIMIT_FSIZE,*pos, 0); + if (*pos >= limit) { + send_sig(SIGXFSZ, current, 0); + return -EFBIG; +diff --git a/mm/fremap.c b/mm/fremap.c +index 9ed4fd4..c42648d 100644 +--- a/mm/fremap.c ++++ b/mm/fremap.c +@@ -155,6 +155,11 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, + retry: + vma = find_vma(mm, start); + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (vma && (mm->pax_flags & MF_PAX_SEGMEXEC) && (vma->vm_flags & VM_MAYEXEC)) ++ goto out; ++#endif ++ + /* + * Make sure the vma is shared, that it supports prefaulting, + * and that the remapped range is valid and fully within +diff --git a/mm/highmem.c b/mm/highmem.c +index 57d82c6..e9e0552 100644 +--- a/mm/highmem.c ++++ b/mm/highmem.c +@@ -125,9 +125,10 @@ static void flush_all_zero_pkmaps(void) + * So no dangers, even with speculative execution. + */ + page = pte_page(pkmap_page_table[i]); ++ pax_open_kernel(); + pte_clear(&init_mm, (unsigned long)page_address(page), + &pkmap_page_table[i]); +- ++ pax_close_kernel(); + set_page_address(page, NULL); + need_flush = 1; + } +@@ -186,9 +187,11 @@ start: + } + } + vaddr = PKMAP_ADDR(last_pkmap_nr); ++ ++ pax_open_kernel(); + set_pte_at(&init_mm, vaddr, + &(pkmap_page_table[last_pkmap_nr]), mk_pte(page, kmap_prot)); +- ++ pax_close_kernel(); + pkmap_count[last_pkmap_nr] = 1; + set_page_address(page, (void *)vaddr); + +diff --git a/mm/huge_memory.c b/mm/huge_memory.c +index f0e5306..cb9398e 100644 +--- a/mm/huge_memory.c ++++ b/mm/huge_memory.c +@@ -733,7 +733,7 @@ out: + * run pte_offset_map on the pmd, if an huge pmd could + * materialize from under us from a different thread. + */ +- if (unlikely(__pte_alloc(mm, vma, pmd, address))) ++ if (unlikely(pmd_none(*pmd) && __pte_alloc(mm, vma, pmd, address))) + return VM_FAULT_OOM; + /* if an huge pmd materialized from under us just retry later */ + if (unlikely(pmd_trans_huge(*pmd))) +diff --git a/mm/hugetlb.c b/mm/hugetlb.c +index 263e177..3f36aec 100644 +--- a/mm/hugetlb.c ++++ b/mm/hugetlb.c +@@ -2446,6 +2446,27 @@ static int unmap_ref_private(struct mm_struct *mm, struct vm_area_struct *vma, + return 1; + } + ++#ifdef CONFIG_PAX_SEGMEXEC ++static void pax_mirror_huge_pte(struct vm_area_struct *vma, unsigned long address, struct page *page_m) ++{ ++ struct mm_struct *mm = vma->vm_mm; ++ struct vm_area_struct *vma_m; ++ unsigned long address_m; ++ pte_t *ptep_m; ++ ++ vma_m = pax_find_mirror_vma(vma); ++ if (!vma_m) ++ return; ++ ++ BUG_ON(address >= SEGMEXEC_TASK_SIZE); ++ address_m = address + SEGMEXEC_TASK_SIZE; ++ ptep_m = huge_pte_offset(mm, address_m & HPAGE_MASK); ++ get_page(page_m); ++ hugepage_add_anon_rmap(page_m, vma_m, address_m); ++ set_huge_pte_at(mm, address_m, ptep_m, make_huge_pte(vma_m, page_m, 0)); ++} ++#endif ++ + /* + * Hugetlb_cow() should be called with page lock of the original hugepage held. + * Called with hugetlb_instantiation_mutex held and pte_page locked so we +@@ -2558,6 +2579,11 @@ retry_avoidcopy: + make_huge_pte(vma, new_page, 1)); + page_remove_rmap(old_page); + hugepage_add_new_anon_rmap(new_page, vma, address); ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ pax_mirror_huge_pte(vma, address, new_page); ++#endif ++ + /* Make the old page be freed below */ + new_page = old_page; + mmu_notifier_invalidate_range_end(mm, +@@ -2712,6 +2738,10 @@ retry: + && (vma->vm_flags & VM_SHARED))); + set_huge_pte_at(mm, address, ptep, new_pte); + ++#ifdef CONFIG_PAX_SEGMEXEC ++ pax_mirror_huge_pte(vma, address, page); ++#endif ++ + if ((flags & FAULT_FLAG_WRITE) && !(vma->vm_flags & VM_SHARED)) { + /* Optimization, do the COW without a second fault */ + ret = hugetlb_cow(mm, vma, address, ptep, new_pte, page); +@@ -2741,6 +2771,10 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma, + static DEFINE_MUTEX(hugetlb_instantiation_mutex); + struct hstate *h = hstate_vma(vma); + ++#ifdef CONFIG_PAX_SEGMEXEC ++ struct vm_area_struct *vma_m; ++#endif ++ + address &= huge_page_mask(h); + + ptep = huge_pte_offset(mm, address); +@@ -2754,6 +2788,26 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma, + VM_FAULT_SET_HINDEX(h - hstates); + } + ++#ifdef CONFIG_PAX_SEGMEXEC ++ vma_m = pax_find_mirror_vma(vma); ++ if (vma_m) { ++ unsigned long address_m; ++ ++ if (vma->vm_start > vma_m->vm_start) { ++ address_m = address; ++ address -= SEGMEXEC_TASK_SIZE; ++ vma = vma_m; ++ h = hstate_vma(vma); ++ } else ++ address_m = address + SEGMEXEC_TASK_SIZE; ++ ++ if (!huge_pte_alloc(mm, address_m, huge_page_size(h))) ++ return VM_FAULT_OOM; ++ address_m &= HPAGE_MASK; ++ unmap_hugepage_range(vma, address_m, address_m + HPAGE_SIZE, NULL); ++ } ++#endif ++ + ptep = huge_pte_alloc(mm, address, huge_page_size(h)); + if (!ptep) + return VM_FAULT_OOM; +diff --git a/mm/internal.h b/mm/internal.h +index 2189af4..f2ca332 100644 +--- a/mm/internal.h ++++ b/mm/internal.h +@@ -95,6 +95,7 @@ extern void putback_lru_page(struct page *page); + * in mm/page_alloc.c + */ + extern void __free_pages_bootmem(struct page *page, unsigned int order); ++extern void free_compound_page(struct page *page); + extern void prep_compound_page(struct page *page, unsigned long order); + #ifdef CONFIG_MEMORY_FAILURE + extern bool is_free_buddy_page(struct page *page); +diff --git a/mm/kmemleak.c b/mm/kmemleak.c +index 45eb621..6ccd8ea 100644 +--- a/mm/kmemleak.c ++++ b/mm/kmemleak.c +@@ -363,7 +363,7 @@ static void print_unreferenced(struct seq_file *seq, + + for (i = 0; i < object->trace_len; i++) { + void *ptr = (void *)object->trace[i]; +- seq_printf(seq, " [<%p>] %pS\n", ptr, ptr); ++ seq_printf(seq, " [<%p>] %pA\n", ptr, ptr); + } + } + +diff --git a/mm/maccess.c b/mm/maccess.c +index d53adf9..03a24bf 100644 +--- a/mm/maccess.c ++++ b/mm/maccess.c +@@ -26,7 +26,7 @@ long __probe_kernel_read(void *dst, const void *src, size_t size) + set_fs(KERNEL_DS); + pagefault_disable(); + ret = __copy_from_user_inatomic(dst, +- (__force const void __user *)src, size); ++ (const void __force_user *)src, size); + pagefault_enable(); + set_fs(old_fs); + +@@ -53,7 +53,7 @@ long __probe_kernel_write(void *dst, const void *src, size_t size) + + set_fs(KERNEL_DS); + pagefault_disable(); +- ret = __copy_to_user_inatomic((__force void __user *)dst, src, size); ++ ret = __copy_to_user_inatomic((void __force_user *)dst, src, size); + pagefault_enable(); + set_fs(old_fs); + +diff --git a/mm/madvise.c b/mm/madvise.c +index 55f645c..4f3fd75 100644 +--- a/mm/madvise.c ++++ b/mm/madvise.c +@@ -46,6 +46,10 @@ static long madvise_behavior(struct vm_area_struct * vma, + pgoff_t pgoff; + unsigned long new_flags = vma->vm_flags; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ struct vm_area_struct *vma_m; ++#endif ++ + switch (behavior) { + case MADV_NORMAL: + new_flags = new_flags & ~VM_RAND_READ & ~VM_SEQ_READ; +@@ -117,6 +121,13 @@ success: + /* + * vm_flags is protected by the mmap_sem held in write mode. + */ ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ vma_m = pax_find_mirror_vma(vma); ++ if (vma_m) ++ vma_m->vm_flags = new_flags & ~(VM_WRITE | VM_MAYWRITE | VM_ACCOUNT); ++#endif ++ + vma->vm_flags = new_flags; + + out: +@@ -175,6 +186,11 @@ static long madvise_dontneed(struct vm_area_struct * vma, + struct vm_area_struct ** prev, + unsigned long start, unsigned long end) + { ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ struct vm_area_struct *vma_m; ++#endif ++ + *prev = vma; + if (vma->vm_flags & (VM_LOCKED|VM_HUGETLB|VM_PFNMAP)) + return -EINVAL; +@@ -187,6 +203,21 @@ static long madvise_dontneed(struct vm_area_struct * vma, + zap_page_range(vma, start, end - start, &details); + } else + zap_page_range(vma, start, end - start, NULL); ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ vma_m = pax_find_mirror_vma(vma); ++ if (vma_m) { ++ if (unlikely(vma->vm_flags & VM_NONLINEAR)) { ++ struct zap_details details = { ++ .nonlinear_vma = vma_m, ++ .last_index = ULONG_MAX, ++ }; ++ zap_page_range(vma, start + SEGMEXEC_TASK_SIZE, end - start, &details); ++ } else ++ zap_page_range(vma, start + SEGMEXEC_TASK_SIZE, end - start, NULL); ++ } ++#endif ++ + return 0; + } + +@@ -238,6 +269,7 @@ static long madvise_remove(struct vm_area_struct *vma, + error = vmtruncate_range(mapping->host, offset, endoff); + fput(f); + down_read(¤t->mm->mmap_sem); ++ fput(f); + return error; + } + +@@ -394,6 +426,16 @@ SYSCALL_DEFINE3(madvise, unsigned long, start, size_t, len_in, int, behavior) + if (end < start) + goto out; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (current->mm->pax_flags & MF_PAX_SEGMEXEC) { ++ if (end > SEGMEXEC_TASK_SIZE) ++ goto out; ++ } else ++#endif ++ ++ if (end > TASK_SIZE) ++ goto out; ++ + error = 0; + if (end == start) + goto out; +diff --git a/mm/memory-failure.c b/mm/memory-failure.c +index 97cc273..6ed703f 100644 +--- a/mm/memory-failure.c ++++ b/mm/memory-failure.c +@@ -61,7 +61,7 @@ int sysctl_memory_failure_early_kill __read_mostly = 0; + + int sysctl_memory_failure_recovery __read_mostly = 1; + +-atomic_long_t mce_bad_pages __read_mostly = ATOMIC_LONG_INIT(0); ++atomic_long_unchecked_t mce_bad_pages __read_mostly = ATOMIC_LONG_INIT(0); + + #if defined(CONFIG_HWPOISON_INJECT) || defined(CONFIG_HWPOISON_INJECT_MODULE) + +@@ -202,7 +202,7 @@ static int kill_proc(struct task_struct *t, unsigned long addr, int trapno, + pfn, t->comm, t->pid); + si.si_signo = SIGBUS; + si.si_errno = 0; +- si.si_addr = (void *)addr; ++ si.si_addr = (void __user *)addr; + #ifdef __ARCH_SI_TRAPNO + si.si_trapno = trapno; + #endif +@@ -1036,7 +1036,7 @@ int memory_failure(unsigned long pfn, int trapno, int flags) + } + + nr_pages = 1 << compound_trans_order(hpage); +- atomic_long_add(nr_pages, &mce_bad_pages); ++ atomic_long_add_unchecked(nr_pages, &mce_bad_pages); + + /* + * We need/can do nothing about count=0 pages. +@@ -1066,7 +1066,7 @@ int memory_failure(unsigned long pfn, int trapno, int flags) + if (!PageHWPoison(hpage) + || (hwpoison_filter(p) && TestClearPageHWPoison(p)) + || (p != hpage && TestSetPageHWPoison(hpage))) { +- atomic_long_sub(nr_pages, &mce_bad_pages); ++ atomic_long_sub_unchecked(nr_pages, &mce_bad_pages); + return 0; + } + set_page_hwpoison_huge_page(hpage); +@@ -1124,7 +1124,7 @@ int memory_failure(unsigned long pfn, int trapno, int flags) + } + if (hwpoison_filter(p)) { + if (TestClearPageHWPoison(p)) +- atomic_long_sub(nr_pages, &mce_bad_pages); ++ atomic_long_sub_unchecked(nr_pages, &mce_bad_pages); + unlock_page(hpage); + put_page(hpage); + return 0; +@@ -1319,7 +1319,7 @@ int unpoison_memory(unsigned long pfn) + return 0; + } + if (TestClearPageHWPoison(p)) +- atomic_long_sub(nr_pages, &mce_bad_pages); ++ atomic_long_sub_unchecked(nr_pages, &mce_bad_pages); + pr_info("MCE: Software-unpoisoned free page %#lx\n", pfn); + return 0; + } +@@ -1333,7 +1333,7 @@ int unpoison_memory(unsigned long pfn) + */ + if (TestClearPageHWPoison(page)) { + pr_info("MCE: Software-unpoisoned page %#lx\n", pfn); +- atomic_long_sub(nr_pages, &mce_bad_pages); ++ atomic_long_sub_unchecked(nr_pages, &mce_bad_pages); + freeit = 1; + if (PageHuge(page)) + clear_page_hwpoison_huge_page(page); +@@ -1446,7 +1446,7 @@ static int soft_offline_huge_page(struct page *page, int flags) + } + done: + if (!PageHWPoison(hpage)) +- atomic_long_add(1 << compound_trans_order(hpage), &mce_bad_pages); ++ atomic_long_add_unchecked(1 << compound_trans_order(hpage), &mce_bad_pages); + set_page_hwpoison_huge_page(hpage); + dequeue_hwpoisoned_huge_page(hpage); + /* keep elevated page count for bad page */ +@@ -1577,7 +1577,7 @@ int soft_offline_page(struct page *page, int flags) + return ret; + + done: +- atomic_long_add(1, &mce_bad_pages); ++ atomic_long_add_unchecked(1, &mce_bad_pages); + SetPageHWPoison(page); + /* keep elevated page count for bad page */ + return ret; +diff --git a/mm/memory.c b/mm/memory.c +index 6105f47..3363489 100644 +--- a/mm/memory.c ++++ b/mm/memory.c +@@ -434,8 +434,12 @@ static inline void free_pmd_range(struct mmu_gather *tlb, pud_t *pud, + return; + + pmd = pmd_offset(pud, start); ++ ++#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_PER_CPU_PGD) + pud_clear(pud); + pmd_free_tlb(tlb, pmd, start); ++#endif ++ + } + + static inline void free_pud_range(struct mmu_gather *tlb, pgd_t *pgd, +@@ -466,9 +470,12 @@ static inline void free_pud_range(struct mmu_gather *tlb, pgd_t *pgd, + if (end - 1 > ceiling - 1) + return; + ++#if !defined(CONFIG_X86_64) || !defined(CONFIG_PAX_PER_CPU_PGD) + pud = pud_offset(pgd, start); + pgd_clear(pgd); + pud_free_tlb(tlb, pud, start); ++#endif ++ + } + + /* +@@ -1597,12 +1604,6 @@ no_page_table: + return page; + } + +-static inline int stack_guard_page(struct vm_area_struct *vma, unsigned long addr) +-{ +- return stack_guard_page_start(vma, addr) || +- stack_guard_page_end(vma, addr+PAGE_SIZE); +-} +- + /** + * __get_user_pages() - pin user pages in memory + * @tsk: task_struct of target task +@@ -1675,10 +1676,10 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm, + (VM_MAYREAD | VM_MAYWRITE) : (VM_READ | VM_WRITE); + i = 0; + +- do { ++ while (nr_pages) { + struct vm_area_struct *vma; + +- vma = find_extend_vma(mm, start); ++ vma = find_vma(mm, start); + if (!vma && in_gate_area(mm, start)) { + unsigned long pg = start & PAGE_MASK; + pgd_t *pgd; +@@ -1726,7 +1727,7 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm, + goto next_page; + } + +- if (!vma || ++ if (!vma || start < vma->vm_start || + (vma->vm_flags & (VM_IO | VM_PFNMAP)) || + !(vm_flags & vma->vm_flags)) + return i ? : -EFAULT; +@@ -1753,11 +1754,6 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm, + int ret; + unsigned int fault_flags = 0; + +- /* For mlock, just skip the stack guard page. */ +- if (foll_flags & FOLL_MLOCK) { +- if (stack_guard_page(vma, start)) +- goto next_page; +- } + if (foll_flags & FOLL_WRITE) + fault_flags |= FAULT_FLAG_WRITE; + if (nonblocking) +@@ -1831,7 +1827,7 @@ next_page: + start += PAGE_SIZE; + nr_pages--; + } while (nr_pages && start < vma->vm_end); +- } while (nr_pages); ++ } + return i; + } + EXPORT_SYMBOL(__get_user_pages); +@@ -2038,6 +2034,10 @@ static int insert_page(struct vm_area_struct *vma, unsigned long addr, + page_add_file_rmap(page); + set_pte_at(mm, addr, pte, mk_pte(page, prot)); + ++#ifdef CONFIG_PAX_SEGMEXEC ++ pax_mirror_file_pte(vma, addr, page, ptl); ++#endif ++ + retval = 0; + pte_unmap_unlock(pte, ptl); + return retval; +@@ -2072,10 +2072,22 @@ out: + int vm_insert_page(struct vm_area_struct *vma, unsigned long addr, + struct page *page) + { ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ struct vm_area_struct *vma_m; ++#endif ++ + if (addr < vma->vm_start || addr >= vma->vm_end) + return -EFAULT; + if (!page_count(page)) + return -EINVAL; ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ vma_m = pax_find_mirror_vma(vma); ++ if (vma_m) ++ vma_m->vm_flags |= VM_INSERTPAGE; ++#endif ++ + vma->vm_flags |= VM_INSERTPAGE; + return insert_page(vma, addr, page, vma->vm_page_prot); + } +@@ -2161,6 +2173,7 @@ int vm_insert_mixed(struct vm_area_struct *vma, unsigned long addr, + unsigned long pfn) + { + BUG_ON(!(vma->vm_flags & VM_MIXEDMAP)); ++ BUG_ON(vma->vm_mirror); + + if (addr < vma->vm_start || addr >= vma->vm_end) + return -EFAULT; +@@ -2368,7 +2381,9 @@ static int apply_to_pmd_range(struct mm_struct *mm, pud_t *pud, + + BUG_ON(pud_huge(*pud)); + +- pmd = pmd_alloc(mm, pud, addr); ++ pmd = (mm == &init_mm) ? ++ pmd_alloc_kernel(mm, pud, addr) : ++ pmd_alloc(mm, pud, addr); + if (!pmd) + return -ENOMEM; + do { +@@ -2388,7 +2403,9 @@ static int apply_to_pud_range(struct mm_struct *mm, pgd_t *pgd, + unsigned long next; + int err; + +- pud = pud_alloc(mm, pgd, addr); ++ pud = (mm == &init_mm) ? ++ pud_alloc_kernel(mm, pgd, addr) : ++ pud_alloc(mm, pgd, addr); + if (!pud) + return -ENOMEM; + do { +@@ -2476,6 +2493,186 @@ static inline void cow_user_page(struct page *dst, struct page *src, unsigned lo + copy_user_highpage(dst, src, va, vma); + } + ++#ifdef CONFIG_PAX_SEGMEXEC ++static void pax_unmap_mirror_pte(struct vm_area_struct *vma, unsigned long address, pmd_t *pmd) ++{ ++ struct mm_struct *mm = vma->vm_mm; ++ spinlock_t *ptl; ++ pte_t *pte, entry; ++ ++ pte = pte_offset_map_lock(mm, pmd, address, &ptl); ++ entry = *pte; ++ if (!pte_present(entry)) { ++ if (!pte_none(entry)) { ++ BUG_ON(pte_file(entry)); ++ free_swap_and_cache(pte_to_swp_entry(entry)); ++ pte_clear_not_present_full(mm, address, pte, 0); ++ } ++ } else { ++ struct page *page; ++ ++ flush_cache_page(vma, address, pte_pfn(entry)); ++ entry = ptep_clear_flush(vma, address, pte); ++ BUG_ON(pte_dirty(entry)); ++ page = vm_normal_page(vma, address, entry); ++ if (page) { ++ update_hiwater_rss(mm); ++ if (PageAnon(page)) ++ dec_mm_counter_fast(mm, MM_ANONPAGES); ++ else ++ dec_mm_counter_fast(mm, MM_FILEPAGES); ++ page_remove_rmap(page); ++ page_cache_release(page); ++ } ++ } ++ pte_unmap_unlock(pte, ptl); ++} ++ ++/* PaX: if vma is mirrored, synchronize the mirror's PTE ++ * ++ * the ptl of the lower mapped page is held on entry and is not released on exit ++ * or inside to ensure atomic changes to the PTE states (swapout, mremap, munmap, etc) ++ */ ++static void pax_mirror_anon_pte(struct vm_area_struct *vma, unsigned long address, struct page *page_m, spinlock_t *ptl) ++{ ++ struct mm_struct *mm = vma->vm_mm; ++ unsigned long address_m; ++ spinlock_t *ptl_m; ++ struct vm_area_struct *vma_m; ++ pmd_t *pmd_m; ++ pte_t *pte_m, entry_m; ++ ++ BUG_ON(!page_m || !PageAnon(page_m)); ++ ++ vma_m = pax_find_mirror_vma(vma); ++ if (!vma_m) ++ return; ++ ++ BUG_ON(!PageLocked(page_m)); ++ BUG_ON(address >= SEGMEXEC_TASK_SIZE); ++ address_m = address + SEGMEXEC_TASK_SIZE; ++ pmd_m = pmd_offset(pud_offset(pgd_offset(mm, address_m), address_m), address_m); ++ pte_m = pte_offset_map(pmd_m, address_m); ++ ptl_m = pte_lockptr(mm, pmd_m); ++ if (ptl != ptl_m) { ++ spin_lock_nested(ptl_m, SINGLE_DEPTH_NESTING); ++ if (!pte_none(*pte_m)) ++ goto out; ++ } ++ ++ entry_m = pfn_pte(page_to_pfn(page_m), vma_m->vm_page_prot); ++ page_cache_get(page_m); ++ page_add_anon_rmap(page_m, vma_m, address_m); ++ inc_mm_counter_fast(mm, MM_ANONPAGES); ++ set_pte_at(mm, address_m, pte_m, entry_m); ++ update_mmu_cache(vma_m, address_m, entry_m); ++out: ++ if (ptl != ptl_m) ++ spin_unlock(ptl_m); ++ pte_unmap(pte_m); ++ unlock_page(page_m); ++} ++ ++void pax_mirror_file_pte(struct vm_area_struct *vma, unsigned long address, struct page *page_m, spinlock_t *ptl) ++{ ++ struct mm_struct *mm = vma->vm_mm; ++ unsigned long address_m; ++ spinlock_t *ptl_m; ++ struct vm_area_struct *vma_m; ++ pmd_t *pmd_m; ++ pte_t *pte_m, entry_m; ++ ++ BUG_ON(!page_m || PageAnon(page_m)); ++ ++ vma_m = pax_find_mirror_vma(vma); ++ if (!vma_m) ++ return; ++ ++ BUG_ON(address >= SEGMEXEC_TASK_SIZE); ++ address_m = address + SEGMEXEC_TASK_SIZE; ++ pmd_m = pmd_offset(pud_offset(pgd_offset(mm, address_m), address_m), address_m); ++ pte_m = pte_offset_map(pmd_m, address_m); ++ ptl_m = pte_lockptr(mm, pmd_m); ++ if (ptl != ptl_m) { ++ spin_lock_nested(ptl_m, SINGLE_DEPTH_NESTING); ++ if (!pte_none(*pte_m)) ++ goto out; ++ } ++ ++ entry_m = pfn_pte(page_to_pfn(page_m), vma_m->vm_page_prot); ++ page_cache_get(page_m); ++ page_add_file_rmap(page_m); ++ inc_mm_counter_fast(mm, MM_FILEPAGES); ++ set_pte_at(mm, address_m, pte_m, entry_m); ++ update_mmu_cache(vma_m, address_m, entry_m); ++out: ++ if (ptl != ptl_m) ++ spin_unlock(ptl_m); ++ pte_unmap(pte_m); ++} ++ ++static void pax_mirror_pfn_pte(struct vm_area_struct *vma, unsigned long address, unsigned long pfn_m, spinlock_t *ptl) ++{ ++ struct mm_struct *mm = vma->vm_mm; ++ unsigned long address_m; ++ spinlock_t *ptl_m; ++ struct vm_area_struct *vma_m; ++ pmd_t *pmd_m; ++ pte_t *pte_m, entry_m; ++ ++ vma_m = pax_find_mirror_vma(vma); ++ if (!vma_m) ++ return; ++ ++ BUG_ON(address >= SEGMEXEC_TASK_SIZE); ++ address_m = address + SEGMEXEC_TASK_SIZE; ++ pmd_m = pmd_offset(pud_offset(pgd_offset(mm, address_m), address_m), address_m); ++ pte_m = pte_offset_map(pmd_m, address_m); ++ ptl_m = pte_lockptr(mm, pmd_m); ++ if (ptl != ptl_m) { ++ spin_lock_nested(ptl_m, SINGLE_DEPTH_NESTING); ++ if (!pte_none(*pte_m)) ++ goto out; ++ } ++ ++ entry_m = pfn_pte(pfn_m, vma_m->vm_page_prot); ++ set_pte_at(mm, address_m, pte_m, entry_m); ++out: ++ if (ptl != ptl_m) ++ spin_unlock(ptl_m); ++ pte_unmap(pte_m); ++} ++ ++static void pax_mirror_pte(struct vm_area_struct *vma, unsigned long address, pte_t *pte, pmd_t *pmd, spinlock_t *ptl) ++{ ++ struct page *page_m; ++ pte_t entry; ++ ++ if (!(vma->vm_mm->pax_flags & MF_PAX_SEGMEXEC)) ++ goto out; ++ ++ entry = *pte; ++ page_m = vm_normal_page(vma, address, entry); ++ if (!page_m) ++ pax_mirror_pfn_pte(vma, address, pte_pfn(entry), ptl); ++ else if (PageAnon(page_m)) { ++ if (pax_find_mirror_vma(vma)) { ++ pte_unmap_unlock(pte, ptl); ++ lock_page(page_m); ++ pte = pte_offset_map_lock(vma->vm_mm, pmd, address, &ptl); ++ if (pte_same(entry, *pte)) ++ pax_mirror_anon_pte(vma, address, page_m, ptl); ++ else ++ unlock_page(page_m); ++ } ++ } else ++ pax_mirror_file_pte(vma, address, page_m, ptl); ++ ++out: ++ pte_unmap_unlock(pte, ptl); ++} ++#endif ++ + /* + * This routine handles present pages, when users try to write + * to a shared page. It is done by copying the page to a new address +@@ -2687,6 +2884,12 @@ gotten: + */ + page_table = pte_offset_map_lock(mm, pmd, address, &ptl); + if (likely(pte_same(*page_table, orig_pte))) { ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (pax_find_mirror_vma(vma)) ++ BUG_ON(!trylock_page(new_page)); ++#endif ++ + if (old_page) { + if (!PageAnon(old_page)) { + dec_mm_counter_fast(mm, MM_FILEPAGES); +@@ -2738,6 +2941,10 @@ gotten: + page_remove_rmap(old_page); + } + ++#ifdef CONFIG_PAX_SEGMEXEC ++ pax_mirror_anon_pte(vma, address, new_page, ptl); ++#endif ++ + /* Free the old page.. */ + new_page = old_page; + ret |= VM_FAULT_WRITE; +@@ -3017,6 +3224,11 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma, + swap_free(entry); + if (vm_swap_full() || (vma->vm_flags & VM_LOCKED) || PageMlocked(page)) + try_to_free_swap(page); ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if ((flags & FAULT_FLAG_WRITE) || !pax_find_mirror_vma(vma)) ++#endif ++ + unlock_page(page); + if (swapcache) { + /* +@@ -3040,6 +3252,11 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma, + + /* No need to invalidate - it was non-present before */ + update_mmu_cache(vma, address, page_table); ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ pax_mirror_anon_pte(vma, address, page, ptl); ++#endif ++ + unlock: + pte_unmap_unlock(page_table, ptl); + out: +@@ -3059,40 +3276,6 @@ out_release: + } + + /* +- * This is like a special single-page "expand_{down|up}wards()", +- * except we must first make sure that 'address{-|+}PAGE_SIZE' +- * doesn't hit another vma. +- */ +-static inline int check_stack_guard_page(struct vm_area_struct *vma, unsigned long address) +-{ +- address &= PAGE_MASK; +- if ((vma->vm_flags & VM_GROWSDOWN) && address == vma->vm_start) { +- struct vm_area_struct *prev = vma->vm_prev; +- +- /* +- * Is there a mapping abutting this one below? +- * +- * That's only ok if it's the same stack mapping +- * that has gotten split.. +- */ +- if (prev && prev->vm_end == address) +- return prev->vm_flags & VM_GROWSDOWN ? 0 : -ENOMEM; +- +- expand_downwards(vma, address - PAGE_SIZE); +- } +- if ((vma->vm_flags & VM_GROWSUP) && address + PAGE_SIZE == vma->vm_end) { +- struct vm_area_struct *next = vma->vm_next; +- +- /* As VM_GROWSDOWN but s/below/above/ */ +- if (next && next->vm_start == address + PAGE_SIZE) +- return next->vm_flags & VM_GROWSUP ? 0 : -ENOMEM; +- +- expand_upwards(vma, address + PAGE_SIZE); +- } +- return 0; +-} +- +-/* + * We enter with non-exclusive mmap_sem (to exclude vma changes, + * but allow concurrent faults), and pte mapped but not yet locked. + * We return with mmap_sem still held, but pte unmapped and unlocked. +@@ -3101,27 +3284,23 @@ static int do_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma, + unsigned long address, pte_t *page_table, pmd_t *pmd, + unsigned int flags) + { +- struct page *page; ++ struct page *page = NULL; + spinlock_t *ptl; + pte_t entry; + +- pte_unmap(page_table); +- +- /* Check if we need to add a guard page to the stack */ +- if (check_stack_guard_page(vma, address) < 0) +- return VM_FAULT_SIGBUS; +- +- /* Use the zero-page for reads */ + if (!(flags & FAULT_FLAG_WRITE)) { + entry = pte_mkspecial(pfn_pte(my_zero_pfn(address), + vma->vm_page_prot)); +- page_table = pte_offset_map_lock(mm, pmd, address, &ptl); ++ ptl = pte_lockptr(mm, pmd); ++ spin_lock(ptl); + if (!pte_none(*page_table)) + goto unlock; + goto setpte; + } + + /* Allocate our own private page. */ ++ pte_unmap(page_table); ++ + if (unlikely(anon_vma_prepare(vma))) + goto oom; + page = alloc_zeroed_user_highpage_movable(vma, address); +@@ -3140,6 +3319,11 @@ static int do_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma, + if (!pte_none(*page_table)) + goto release; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (pax_find_mirror_vma(vma)) ++ BUG_ON(!trylock_page(page)); ++#endif ++ + inc_mm_counter_fast(mm, MM_ANONPAGES); + page_add_new_anon_rmap(page, vma, address); + setpte: +@@ -3147,6 +3331,12 @@ setpte: + + /* No need to invalidate - it was non-present before */ + update_mmu_cache(vma, address, page_table); ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (page) ++ pax_mirror_anon_pte(vma, address, page, ptl); ++#endif ++ + unlock: + pte_unmap_unlock(page_table, ptl); + return 0; +@@ -3290,6 +3480,12 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma, + */ + /* Only go through if we didn't race with anybody else... */ + if (likely(pte_same(*page_table, orig_pte))) { ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (anon && pax_find_mirror_vma(vma)) ++ BUG_ON(!trylock_page(page)); ++#endif ++ + flush_icache_page(vma, page); + entry = mk_pte(page, vma->vm_page_prot); + if (flags & FAULT_FLAG_WRITE) +@@ -3309,6 +3505,14 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma, + + /* no need to invalidate: a not-present page won't be cached */ + update_mmu_cache(vma, address, page_table); ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (anon) ++ pax_mirror_anon_pte(vma, address, page, ptl); ++ else ++ pax_mirror_file_pte(vma, address, page, ptl); ++#endif ++ + } else { + if (cow_page) + mem_cgroup_uncharge_page(cow_page); +@@ -3462,6 +3666,12 @@ int handle_pte_fault(struct mm_struct *mm, + if (flags & FAULT_FLAG_WRITE) + flush_tlb_fix_spurious_fault(vma, address); + } ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ pax_mirror_pte(vma, address, pte, pmd, ptl); ++ return 0; ++#endif ++ + unlock: + pte_unmap_unlock(pte, ptl); + return 0; +@@ -3478,6 +3688,10 @@ int handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma, + pmd_t *pmd; + pte_t *pte; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ struct vm_area_struct *vma_m; ++#endif ++ + __set_current_state(TASK_RUNNING); + + count_vm_event(PGFAULT); +@@ -3489,6 +3703,34 @@ int handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma, + if (unlikely(is_vm_hugetlb_page(vma))) + return hugetlb_fault(mm, vma, address, flags); + ++#ifdef CONFIG_PAX_SEGMEXEC ++ vma_m = pax_find_mirror_vma(vma); ++ if (vma_m) { ++ unsigned long address_m; ++ pgd_t *pgd_m; ++ pud_t *pud_m; ++ pmd_t *pmd_m; ++ ++ if (vma->vm_start > vma_m->vm_start) { ++ address_m = address; ++ address -= SEGMEXEC_TASK_SIZE; ++ vma = vma_m; ++ } else ++ address_m = address + SEGMEXEC_TASK_SIZE; ++ ++ pgd_m = pgd_offset(mm, address_m); ++ pud_m = pud_alloc(mm, pgd_m, address_m); ++ if (!pud_m) ++ return VM_FAULT_OOM; ++ pmd_m = pmd_alloc(mm, pud_m, address_m); ++ if (!pmd_m) ++ return VM_FAULT_OOM; ++ if (!pmd_present(*pmd_m) && __pte_alloc(mm, vma_m, pmd_m, address_m)) ++ return VM_FAULT_OOM; ++ pax_unmap_mirror_pte(vma_m, address_m, pmd_m); ++ } ++#endif ++ + pgd = pgd_offset(mm, address); + pud = pud_alloc(mm, pgd, address); + if (!pud) +@@ -3518,7 +3760,7 @@ int handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma, + * run pte_offset_map on the pmd, if an huge pmd could + * materialize from under us from a different thread. + */ +- if (unlikely(pmd_none(*pmd)) && __pte_alloc(mm, vma, pmd, address)) ++ if (unlikely(pmd_none(*pmd) && __pte_alloc(mm, vma, pmd, address))) + return VM_FAULT_OOM; + /* if an huge pmd materialized from under us just retry later */ + if (unlikely(pmd_trans_huge(*pmd))) +@@ -3555,6 +3797,23 @@ int __pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address) + spin_unlock(&mm->page_table_lock); + return 0; + } ++ ++int __pud_alloc_kernel(struct mm_struct *mm, pgd_t *pgd, unsigned long address) ++{ ++ pud_t *new = pud_alloc_one(mm, address); ++ if (!new) ++ return -ENOMEM; ++ ++ smp_wmb(); /* See comment in __pte_alloc */ ++ ++ spin_lock(&mm->page_table_lock); ++ if (pgd_present(*pgd)) /* Another has populated it */ ++ pud_free(mm, new); ++ else ++ pgd_populate_kernel(mm, pgd, new); ++ spin_unlock(&mm->page_table_lock); ++ return 0; ++} + #endif /* __PAGETABLE_PUD_FOLDED */ + + #ifndef __PAGETABLE_PMD_FOLDED +@@ -3585,6 +3844,30 @@ int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address) + spin_unlock(&mm->page_table_lock); + return 0; + } ++ ++int __pmd_alloc_kernel(struct mm_struct *mm, pud_t *pud, unsigned long address) ++{ ++ pmd_t *new = pmd_alloc_one(mm, address); ++ if (!new) ++ return -ENOMEM; ++ ++ smp_wmb(); /* See comment in __pte_alloc */ ++ ++ spin_lock(&mm->page_table_lock); ++#ifndef __ARCH_HAS_4LEVEL_HACK ++ if (pud_present(*pud)) /* Another has populated it */ ++ pmd_free(mm, new); ++ else ++ pud_populate_kernel(mm, pud, new); ++#else ++ if (pgd_present(*pud)) /* Another has populated it */ ++ pmd_free(mm, new); ++ else ++ pgd_populate_kernel(mm, pud, new); ++#endif /* __ARCH_HAS_4LEVEL_HACK */ ++ spin_unlock(&mm->page_table_lock); ++ return 0; ++} + #endif /* __PAGETABLE_PMD_FOLDED */ + + int make_pages_present(unsigned long addr, unsigned long end) +@@ -3622,7 +3905,7 @@ static int __init gate_vma_init(void) + gate_vma.vm_start = FIXADDR_USER_START; + gate_vma.vm_end = FIXADDR_USER_END; + gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC; +- gate_vma.vm_page_prot = __P101; ++ gate_vma.vm_page_prot = vm_get_page_prot(gate_vma.vm_flags); + + return 0; + } +diff --git a/mm/mempolicy.c b/mm/mempolicy.c +index bf5b485..e44c2cb 100644 +--- a/mm/mempolicy.c ++++ b/mm/mempolicy.c +@@ -619,6 +619,10 @@ static int mbind_range(struct mm_struct *mm, unsigned long start, + unsigned long vmstart; + unsigned long vmend; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ struct vm_area_struct *vma_m; ++#endif ++ + vma = find_vma(mm, start); + if (!vma || vma->vm_start > start) + return -EFAULT; +@@ -672,6 +676,16 @@ static int mbind_range(struct mm_struct *mm, unsigned long start, + if (err) + goto out; + } ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ vma_m = pax_find_mirror_vma(vma); ++ if (vma_m && vma_m->vm_ops && vma_m->vm_ops->set_policy) { ++ err = vma_m->vm_ops->set_policy(vma_m, new_pol); ++ if (err) ++ goto out; ++ } ++#endif ++ + } + + out: +@@ -1105,6 +1119,17 @@ static long do_mbind(unsigned long start, unsigned long len, + + if (end < start) + return -EINVAL; ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (mm->pax_flags & MF_PAX_SEGMEXEC) { ++ if (end > SEGMEXEC_TASK_SIZE) ++ return -EINVAL; ++ } else ++#endif ++ ++ if (end > TASK_SIZE) ++ return -EINVAL; ++ + if (end == start) + return 0; + +@@ -1328,8 +1353,7 @@ SYSCALL_DEFINE4(migrate_pages, pid_t, pid, unsigned long, maxnode, + */ + tcred = __task_cred(task); + if (cred->euid != tcred->suid && cred->euid != tcred->uid && +- cred->uid != tcred->suid && cred->uid != tcred->uid && +- !capable(CAP_SYS_NICE)) { ++ cred->uid != tcred->suid && !capable(CAP_SYS_NICE)) { + rcu_read_unlock(); + err = -EPERM; + goto out_put; +@@ -1360,6 +1384,15 @@ SYSCALL_DEFINE4(migrate_pages, pid_t, pid, unsigned long, maxnode, + goto out; + } + ++#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP ++ if (mm != current->mm && ++ (mm->pax_flags & MF_PAX_RANDMMAP || mm->pax_flags & MF_PAX_SEGMEXEC)) { ++ mmput(mm); ++ err = -EPERM; ++ goto out; ++ } ++#endif ++ + err = do_migrate_pages(mm, old, new, + capable(CAP_SYS_NICE) ? MPOL_MF_MOVE_ALL : MPOL_MF_MOVE); + +diff --git a/mm/mlock.c b/mm/mlock.c +index ef726e8..13e0901 100644 +--- a/mm/mlock.c ++++ b/mm/mlock.c +@@ -13,6 +13,7 @@ + #include <linux/pagemap.h> + #include <linux/mempolicy.h> + #include <linux/syscalls.h> ++#include <linux/security.h> + #include <linux/sched.h> + #include <linux/export.h> + #include <linux/rmap.h> +@@ -385,6 +386,9 @@ static int do_mlock(unsigned long start, size_t len, int on) + return -EINVAL; + if (end == start) + return 0; ++ if (end > TASK_SIZE) ++ return -EINVAL; ++ + vma = find_vma(current->mm, start); + if (!vma || vma->vm_start > start) + return -ENOMEM; +@@ -396,6 +400,11 @@ static int do_mlock(unsigned long start, size_t len, int on) + for (nstart = start ; ; ) { + vm_flags_t newflags; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if ((current->mm->pax_flags & MF_PAX_SEGMEXEC) && (vma->vm_start >= SEGMEXEC_TASK_SIZE)) ++ break; ++#endif ++ + /* Here we know that vma->vm_start <= nstart < vma->vm_end. */ + + newflags = vma->vm_flags | VM_LOCKED; +@@ -501,6 +510,7 @@ SYSCALL_DEFINE2(mlock, unsigned long, start, size_t, len) + lock_limit >>= PAGE_SHIFT; + + /* check against resource limits */ ++ gr_learn_resource(current, RLIMIT_MEMLOCK, (current->mm->locked_vm << PAGE_SHIFT) + len, 1); + if ((locked <= lock_limit) || capable(CAP_IPC_LOCK)) + error = do_mlock(start, len, 1); + up_write(¤t->mm->mmap_sem); +@@ -524,17 +534,23 @@ SYSCALL_DEFINE2(munlock, unsigned long, start, size_t, len) + static int do_mlockall(int flags) + { + struct vm_area_struct * vma, * prev = NULL; +- unsigned int def_flags = 0; + + if (flags & MCL_FUTURE) +- def_flags = VM_LOCKED; +- current->mm->def_flags = def_flags; ++ current->mm->def_flags |= VM_LOCKED; ++ else ++ current->mm->def_flags &= ~VM_LOCKED; + if (flags == MCL_FUTURE) + goto out; + + for (vma = current->mm->mmap; vma ; vma = prev->vm_next) { + vm_flags_t newflags; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if ((current->mm->pax_flags & MF_PAX_SEGMEXEC) && (vma->vm_start >= SEGMEXEC_TASK_SIZE)) ++ break; ++#endif ++ ++ BUG_ON(vma->vm_end > TASK_SIZE); + newflags = vma->vm_flags | VM_LOCKED; + if (!(flags & MCL_CURRENT)) + newflags &= ~VM_LOCKED; +@@ -567,6 +583,7 @@ SYSCALL_DEFINE1(mlockall, int, flags) + lock_limit >>= PAGE_SHIFT; + + ret = -ENOMEM; ++ gr_learn_resource(current, RLIMIT_MEMLOCK, current->mm->total_vm << PAGE_SHIFT, 1); + if (!(flags & MCL_CURRENT) || (current->mm->total_vm <= lock_limit) || + capable(CAP_IPC_LOCK)) + ret = do_mlockall(flags); +diff --git a/mm/mmap.c b/mm/mmap.c +index 848ef52..d2b586c 100644 +--- a/mm/mmap.c ++++ b/mm/mmap.c +@@ -46,6 +46,16 @@ + #define arch_rebalance_pgtables(addr, len) (addr) + #endif + ++static inline void verify_mm_writelocked(struct mm_struct *mm) ++{ ++#if defined(CONFIG_DEBUG_VM) || defined(CONFIG_PAX) ++ if (unlikely(down_read_trylock(&mm->mmap_sem))) { ++ up_read(&mm->mmap_sem); ++ BUG(); ++ } ++#endif ++} ++ + static void unmap_region(struct mm_struct *mm, + struct vm_area_struct *vma, struct vm_area_struct *prev, + unsigned long start, unsigned long end); +@@ -71,22 +81,32 @@ static void unmap_region(struct mm_struct *mm, + * x: (no) no x: (no) yes x: (no) yes x: (yes) yes + * + */ +-pgprot_t protection_map[16] = { ++pgprot_t protection_map[16] __read_only = { + __P000, __P001, __P010, __P011, __P100, __P101, __P110, __P111, + __S000, __S001, __S010, __S011, __S100, __S101, __S110, __S111 + }; + +-pgprot_t vm_get_page_prot(unsigned long vm_flags) ++pgprot_t vm_get_page_prot(vm_flags_t vm_flags) + { +- return __pgprot(pgprot_val(protection_map[vm_flags & ++ pgprot_t prot = __pgprot(pgprot_val(protection_map[vm_flags & + (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)]) | + pgprot_val(arch_vm_get_page_prot(vm_flags))); ++ ++#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_X86_32) ++ if (!(__supported_pte_mask & _PAGE_NX) && ++ (vm_flags & (VM_PAGEEXEC | VM_EXEC)) == VM_PAGEEXEC && ++ (vm_flags & (VM_READ | VM_WRITE))) ++ prot = __pgprot(pte_val(pte_exprotect(__pte(pgprot_val(prot))))); ++#endif ++ ++ return prot; + } + EXPORT_SYMBOL(vm_get_page_prot); + + int sysctl_overcommit_memory __read_mostly = OVERCOMMIT_GUESS; /* heuristic overcommit */ + int sysctl_overcommit_ratio __read_mostly = 50; /* default is 50% */ + int sysctl_max_map_count __read_mostly = DEFAULT_MAX_MAP_COUNT; ++unsigned long sysctl_heap_stack_gap __read_mostly = 64*1024; + /* + * Make sure vm_committed_as in one cacheline and not cacheline shared with + * other variables. It can be updated by several CPUs frequently. +@@ -228,6 +248,7 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma) + struct vm_area_struct *next = vma->vm_next; + + might_sleep(); ++ BUG_ON(vma->vm_mirror); + if (vma->vm_ops && vma->vm_ops->close) + vma->vm_ops->close(vma); + if (vma->vm_file) { +@@ -274,6 +295,7 @@ SYSCALL_DEFINE1(brk, unsigned long, brk) + * not page aligned -Ram Gupta + */ + rlim = rlimit(RLIMIT_DATA); ++ gr_learn_resource(current, RLIMIT_DATA, (brk - mm->start_brk) + (mm->end_data - mm->start_data), 1); + if (rlim < RLIM_INFINITY && (brk - mm->start_brk) + + (mm->end_data - mm->start_data) > rlim) + goto out; +@@ -690,6 +712,12 @@ static int + can_vma_merge_before(struct vm_area_struct *vma, unsigned long vm_flags, + struct anon_vma *anon_vma, struct file *file, pgoff_t vm_pgoff) + { ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if ((vma->vm_mm->pax_flags & MF_PAX_SEGMEXEC) && vma->vm_start == SEGMEXEC_TASK_SIZE) ++ return 0; ++#endif ++ + if (is_mergeable_vma(vma, file, vm_flags) && + is_mergeable_anon_vma(anon_vma, vma->anon_vma, vma)) { + if (vma->vm_pgoff == vm_pgoff) +@@ -709,6 +737,12 @@ static int + can_vma_merge_after(struct vm_area_struct *vma, unsigned long vm_flags, + struct anon_vma *anon_vma, struct file *file, pgoff_t vm_pgoff) + { ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if ((vma->vm_mm->pax_flags & MF_PAX_SEGMEXEC) && vma->vm_end == SEGMEXEC_TASK_SIZE) ++ return 0; ++#endif ++ + if (is_mergeable_vma(vma, file, vm_flags) && + is_mergeable_anon_vma(anon_vma, vma->anon_vma, vma)) { + pgoff_t vm_pglen; +@@ -751,13 +785,20 @@ can_vma_merge_after(struct vm_area_struct *vma, unsigned long vm_flags, + struct vm_area_struct *vma_merge(struct mm_struct *mm, + struct vm_area_struct *prev, unsigned long addr, + unsigned long end, unsigned long vm_flags, +- struct anon_vma *anon_vma, struct file *file, ++ struct anon_vma *anon_vma, struct file *file, + pgoff_t pgoff, struct mempolicy *policy) + { + pgoff_t pglen = (end - addr) >> PAGE_SHIFT; + struct vm_area_struct *area, *next; + int err; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ unsigned long addr_m = addr + SEGMEXEC_TASK_SIZE, end_m = end + SEGMEXEC_TASK_SIZE; ++ struct vm_area_struct *area_m = NULL, *next_m = NULL, *prev_m = NULL; ++ ++ BUG_ON((mm->pax_flags & MF_PAX_SEGMEXEC) && SEGMEXEC_TASK_SIZE < end); ++#endif ++ + /* + * We later require that vma->vm_flags == vm_flags, + * so this tests vma->vm_flags & VM_SPECIAL, too. +@@ -773,6 +814,15 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm, + if (next && next->vm_end == end) /* cases 6, 7, 8 */ + next = next->vm_next; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (prev) ++ prev_m = pax_find_mirror_vma(prev); ++ if (area) ++ area_m = pax_find_mirror_vma(area); ++ if (next) ++ next_m = pax_find_mirror_vma(next); ++#endif ++ + /* + * Can it merge with the predecessor? + */ +@@ -792,9 +842,24 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm, + /* cases 1, 6 */ + err = vma_adjust(prev, prev->vm_start, + next->vm_end, prev->vm_pgoff, NULL); +- } else /* cases 2, 5, 7 */ ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (!err && prev_m) ++ err = vma_adjust(prev_m, prev_m->vm_start, ++ next_m->vm_end, prev_m->vm_pgoff, NULL); ++#endif ++ ++ } else { /* cases 2, 5, 7 */ + err = vma_adjust(prev, prev->vm_start, + end, prev->vm_pgoff, NULL); ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (!err && prev_m) ++ err = vma_adjust(prev_m, prev_m->vm_start, ++ end_m, prev_m->vm_pgoff, NULL); ++#endif ++ ++ } + if (err) + return NULL; + khugepaged_enter_vma_merge(prev); +@@ -808,12 +873,27 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm, + mpol_equal(policy, vma_policy(next)) && + can_vma_merge_before(next, vm_flags, + anon_vma, file, pgoff+pglen)) { +- if (prev && addr < prev->vm_end) /* case 4 */ ++ if (prev && addr < prev->vm_end) { /* case 4 */ + err = vma_adjust(prev, prev->vm_start, + addr, prev->vm_pgoff, NULL); +- else /* cases 3, 8 */ ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (!err && prev_m) ++ err = vma_adjust(prev_m, prev_m->vm_start, ++ addr_m, prev_m->vm_pgoff, NULL); ++#endif ++ ++ } else { /* cases 3, 8 */ + err = vma_adjust(area, addr, next->vm_end, + next->vm_pgoff - pglen, NULL); ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (!err && area_m) ++ err = vma_adjust(area_m, addr_m, next_m->vm_end, ++ next_m->vm_pgoff - pglen, NULL); ++#endif ++ ++ } + if (err) + return NULL; + khugepaged_enter_vma_merge(area); +@@ -922,14 +1002,11 @@ none: + void vm_stat_account(struct mm_struct *mm, unsigned long flags, + struct file *file, long pages) + { +- const unsigned long stack_flags +- = VM_STACK_FLAGS & (VM_GROWSUP|VM_GROWSDOWN); +- + if (file) { + mm->shared_vm += pages; + if ((flags & (VM_EXEC|VM_WRITE)) == VM_EXEC) + mm->exec_vm += pages; +- } else if (flags & stack_flags) ++ } else if (flags & (VM_GROWSUP|VM_GROWSDOWN)) + mm->stack_vm += pages; + if (flags & (VM_RESERVED|VM_IO)) + mm->reserved_vm += pages; +@@ -969,7 +1046,7 @@ static unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, + * (the exception is when the underlying filesystem is noexec + * mounted, in which case we dont add PROT_EXEC.) + */ +- if ((prot & PROT_READ) && (current->personality & READ_IMPLIES_EXEC)) ++ if ((prot & (PROT_READ | PROT_WRITE)) && (current->personality & READ_IMPLIES_EXEC)) + if (!(file && (file->f_path.mnt->mnt_flags & MNT_NOEXEC))) + prot |= PROT_EXEC; + +@@ -995,7 +1072,7 @@ static unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, + /* Obtain the address to map to. we verify (or select) it and ensure + * that it represents a valid section of the address space. + */ +- addr = get_unmapped_area(file, addr, len, pgoff, flags); ++ addr = get_unmapped_area(file, addr, len, pgoff, flags | ((prot & PROT_EXEC) ? MAP_EXECUTABLE : 0)); + if (addr & ~PAGE_MASK) + return addr; + +@@ -1006,6 +1083,36 @@ static unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, + vm_flags = calc_vm_prot_bits(prot) | calc_vm_flag_bits(flags) | + mm->def_flags | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC; + ++#ifdef CONFIG_PAX_MPROTECT ++ if (mm->pax_flags & MF_PAX_MPROTECT) { ++#ifndef CONFIG_PAX_MPROTECT_COMPAT ++ if ((vm_flags & (VM_WRITE | VM_EXEC)) == (VM_WRITE | VM_EXEC)) { ++ gr_log_rwxmmap(file); ++ ++#ifdef CONFIG_PAX_EMUPLT ++ vm_flags &= ~VM_EXEC; ++#else ++ return -EPERM; ++#endif ++ ++ } ++ ++ if (!(vm_flags & VM_EXEC)) ++ vm_flags &= ~VM_MAYEXEC; ++#else ++ if ((vm_flags & (VM_WRITE | VM_EXEC)) != VM_EXEC) ++ vm_flags &= ~(VM_EXEC | VM_MAYEXEC); ++#endif ++ else ++ vm_flags &= ~VM_MAYWRITE; ++ } ++#endif ++ ++#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_X86_32) ++ if ((mm->pax_flags & MF_PAX_PAGEEXEC) && file) ++ vm_flags &= ~VM_PAGEEXEC; ++#endif ++ + if (flags & MAP_LOCKED) + if (!can_do_mlock()) + return -EPERM; +@@ -1017,6 +1124,7 @@ static unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, + locked += mm->locked_vm; + lock_limit = rlimit(RLIMIT_MEMLOCK); + lock_limit >>= PAGE_SHIFT; ++ gr_learn_resource(current, RLIMIT_MEMLOCK, locked << PAGE_SHIFT, 1); + if (locked > lock_limit && !capable(CAP_IPC_LOCK)) + return -EAGAIN; + } +@@ -1087,6 +1195,9 @@ static unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, + if (error) + return error; + ++ if (!gr_acl_handle_mmap(file, prot)) ++ return -EACCES; ++ + return mmap_region(file, addr, len, flags, vm_flags, pgoff); + } + +@@ -1192,7 +1303,7 @@ int vma_wants_writenotify(struct vm_area_struct *vma) + vm_flags_t vm_flags = vma->vm_flags; + + /* If it was private or non-writable, the write bit is already clear */ +- if ((vm_flags & (VM_WRITE|VM_SHARED)) != ((VM_WRITE|VM_SHARED))) ++ if ((vm_flags & (VM_WRITE|VM_SHARED)) != (VM_WRITE|VM_SHARED)) + return 0; + + /* The backer wishes to know when pages are first written to? */ +@@ -1241,14 +1352,24 @@ unsigned long mmap_region(struct file *file, unsigned long addr, + unsigned long charged = 0; + struct inode *inode = file ? file->f_path.dentry->d_inode : NULL; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ struct vm_area_struct *vma_m = NULL; ++#endif ++ ++ /* ++ * mm->mmap_sem is required to protect against another thread ++ * changing the mappings in case we sleep. ++ */ ++ verify_mm_writelocked(mm); ++ + /* Clear old maps */ + error = -ENOMEM; +-munmap_back: + vma = find_vma_prepare(mm, addr, &prev, &rb_link, &rb_parent); + if (vma && vma->vm_start < addr + len) { + if (do_munmap(mm, addr, len)) + return -ENOMEM; +- goto munmap_back; ++ vma = find_vma_prepare(mm, addr, &prev, &rb_link, &rb_parent); ++ BUG_ON(vma && vma->vm_start < addr + len); + } + + /* Check against address space limit. */ +@@ -1297,6 +1418,16 @@ munmap_back: + goto unacct_error; + } + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (vm_flags & VM_EXEC)) { ++ vma_m = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); ++ if (!vma_m) { ++ error = -ENOMEM; ++ goto free_vma; ++ } ++ } ++#endif ++ + vma->vm_mm = mm; + vma->vm_start = addr; + vma->vm_end = addr + len; +@@ -1321,6 +1452,19 @@ munmap_back: + error = file->f_op->mmap(file, vma); + if (error) + goto unmap_and_free_vma; ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (vma_m && (vm_flags & VM_EXECUTABLE)) ++ added_exe_file_vma(mm); ++#endif ++ ++#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_X86_32) ++ if ((mm->pax_flags & MF_PAX_PAGEEXEC) && !(vma->vm_flags & VM_SPECIAL)) { ++ vma->vm_flags |= VM_PAGEEXEC; ++ vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); ++ } ++#endif ++ + if (vm_flags & VM_EXECUTABLE) + added_exe_file_vma(mm); + +@@ -1358,6 +1502,11 @@ munmap_back: + vma_link(mm, vma, prev, rb_link, rb_parent); + file = vma->vm_file; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (vma_m) ++ BUG_ON(pax_mirror_vma(vma_m, vma)); ++#endif ++ + /* Once vma denies write, undo our temporary denial count */ + if (correct_wcount) + atomic_inc(&inode->i_writecount); +@@ -1366,6 +1515,7 @@ out: + + mm->total_vm += len >> PAGE_SHIFT; + vm_stat_account(mm, vm_flags, file, len >> PAGE_SHIFT); ++ track_exec_limit(mm, addr, addr + len, vm_flags); + if (vm_flags & VM_LOCKED) { + if (!mlock_vma_pages_range(vma, addr, addr + len)) + mm->locked_vm += (len >> PAGE_SHIFT); +@@ -1383,6 +1533,12 @@ unmap_and_free_vma: + unmap_region(mm, vma, prev, vma->vm_start, vma->vm_end); + charged = 0; + free_vma: ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (vma_m) ++ kmem_cache_free(vm_area_cachep, vma_m); ++#endif ++ + kmem_cache_free(vm_area_cachep, vma); + unacct_error: + if (charged) +@@ -1390,6 +1546,44 @@ unacct_error: + return error; + } + ++bool check_heap_stack_gap(const struct vm_area_struct *vma, unsigned long addr, unsigned long len) ++{ ++ if (!vma) { ++#ifdef CONFIG_STACK_GROWSUP ++ if (addr > sysctl_heap_stack_gap) ++ vma = find_vma(current->mm, addr - sysctl_heap_stack_gap); ++ else ++ vma = find_vma(current->mm, 0); ++ if (vma && (vma->vm_flags & VM_GROWSUP)) ++ return false; ++#endif ++ return true; ++ } ++ ++ if (addr + len > vma->vm_start) ++ return false; ++ ++ if (vma->vm_flags & VM_GROWSDOWN) ++ return sysctl_heap_stack_gap <= vma->vm_start - addr - len; ++#ifdef CONFIG_STACK_GROWSUP ++ else if (vma->vm_prev && (vma->vm_prev->vm_flags & VM_GROWSUP)) ++ return addr - vma->vm_prev->vm_end <= sysctl_heap_stack_gap; ++#endif ++ ++ return true; ++} ++ ++unsigned long skip_heap_stack_gap(const struct vm_area_struct *vma, unsigned long len) ++{ ++ if (vma->vm_start < len) ++ return -ENOMEM; ++ if (!(vma->vm_flags & VM_GROWSDOWN)) ++ return vma->vm_start - len; ++ if (sysctl_heap_stack_gap <= vma->vm_start - len) ++ return vma->vm_start - len - sysctl_heap_stack_gap; ++ return -ENOMEM; ++} ++ + /* Get an address range which is currently unmapped. + * For shmat() with addr=0. + * +@@ -1416,18 +1610,23 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, + if (flags & MAP_FIXED) + return addr; + ++#ifdef CONFIG_PAX_RANDMMAP ++ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) ++#endif ++ + if (addr) { + addr = PAGE_ALIGN(addr); +- vma = find_vma(mm, addr); +- if (TASK_SIZE - len >= addr && +- (!vma || addr + len <= vma->vm_start)) +- return addr; ++ if (TASK_SIZE - len >= addr) { ++ vma = find_vma(mm, addr); ++ if (check_heap_stack_gap(vma, addr, len)) ++ return addr; ++ } + } + if (len > mm->cached_hole_size) { +- start_addr = addr = mm->free_area_cache; ++ start_addr = addr = mm->free_area_cache; + } else { +- start_addr = addr = TASK_UNMAPPED_BASE; +- mm->cached_hole_size = 0; ++ start_addr = addr = mm->mmap_base; ++ mm->cached_hole_size = 0; + } + + full_search: +@@ -1438,34 +1637,40 @@ full_search: + * Start a new search - just in case we missed + * some holes. + */ +- if (start_addr != TASK_UNMAPPED_BASE) { +- addr = TASK_UNMAPPED_BASE; +- start_addr = addr; ++ if (start_addr != mm->mmap_base) { ++ start_addr = addr = mm->mmap_base; + mm->cached_hole_size = 0; + goto full_search; + } + return -ENOMEM; + } +- if (!vma || addr + len <= vma->vm_start) { +- /* +- * Remember the place where we stopped the search: +- */ +- mm->free_area_cache = addr + len; +- return addr; +- } ++ if (check_heap_stack_gap(vma, addr, len)) ++ break; + if (addr + mm->cached_hole_size < vma->vm_start) + mm->cached_hole_size = vma->vm_start - addr; + addr = vma->vm_end; + } ++ ++ /* ++ * Remember the place where we stopped the search: ++ */ ++ mm->free_area_cache = addr + len; ++ return addr; + } + #endif + + void arch_unmap_area(struct mm_struct *mm, unsigned long addr) + { ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && SEGMEXEC_TASK_SIZE <= addr) ++ return; ++#endif ++ + /* + * Is this a new hole at the lowest possible address? + */ +- if (addr >= TASK_UNMAPPED_BASE && addr < mm->free_area_cache) ++ if (addr >= mm->mmap_base && addr < mm->free_area_cache) + mm->free_area_cache = addr; + } + +@@ -1481,7 +1686,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + { + struct vm_area_struct *vma; + struct mm_struct *mm = current->mm; +- unsigned long addr = addr0, start_addr; ++ unsigned long base = mm->mmap_base, addr = addr0, start_addr; + + /* requested length too big for entire address space */ + if (len > TASK_SIZE) +@@ -1490,13 +1695,18 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + if (flags & MAP_FIXED) + return addr; + ++#ifdef CONFIG_PAX_RANDMMAP ++ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) ++#endif ++ + /* requesting a specific address */ + if (addr) { + addr = PAGE_ALIGN(addr); +- vma = find_vma(mm, addr); +- if (TASK_SIZE - len >= addr && +- (!vma || addr + len <= vma->vm_start)) +- return addr; ++ if (TASK_SIZE - len >= addr) { ++ vma = find_vma(mm, addr); ++ if (check_heap_stack_gap(vma, addr, len)) ++ return addr; ++ } + } + + /* check if free_area_cache is useful for us */ +@@ -1520,7 +1730,7 @@ try_again: + * return with success: + */ + vma = find_vma(mm, addr); +- if (!vma || addr+len <= vma->vm_start) ++ if (check_heap_stack_gap(vma, addr, len)) + /* remember the address as a hint for next time */ + return (mm->free_area_cache = addr); + +@@ -1529,8 +1739,8 @@ try_again: + mm->cached_hole_size = vma->vm_start - addr; + + /* try just below the current vma->vm_start */ +- addr = vma->vm_start-len; +- } while (len < vma->vm_start); ++ addr = skip_heap_stack_gap(vma, len); ++ } while (!IS_ERR_VALUE(addr)); + + fail: + /* +@@ -1553,13 +1763,21 @@ fail: + * can happen with large stack limits and large mmap() + * allocations. + */ ++ mm->mmap_base = TASK_UNMAPPED_BASE; ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base += mm->delta_mmap; ++#endif ++ ++ mm->free_area_cache = mm->mmap_base; + mm->cached_hole_size = ~0UL; +- mm->free_area_cache = TASK_UNMAPPED_BASE; + addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags); + /* + * Restore the topdown base: + */ +- mm->free_area_cache = mm->mmap_base; ++ mm->mmap_base = base; ++ mm->free_area_cache = base; + mm->cached_hole_size = ~0UL; + + return addr; +@@ -1568,6 +1786,12 @@ fail: + + void arch_unmap_area_topdown(struct mm_struct *mm, unsigned long addr) + { ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && SEGMEXEC_TASK_SIZE <= addr) ++ return; ++#endif ++ + /* + * Is this a new hole at the highest possible address? + */ +@@ -1575,8 +1799,10 @@ void arch_unmap_area_topdown(struct mm_struct *mm, unsigned long addr) + mm->free_area_cache = addr; + + /* dont allow allocations above current base */ +- if (mm->free_area_cache > mm->mmap_base) ++ if (mm->free_area_cache > mm->mmap_base) { + mm->free_area_cache = mm->mmap_base; ++ mm->cached_hole_size = ~0UL; ++ } + } + + unsigned long +@@ -1672,6 +1898,28 @@ find_vma_prev(struct mm_struct *mm, unsigned long addr, + return vma; + } + ++#ifdef CONFIG_PAX_SEGMEXEC ++struct vm_area_struct *pax_find_mirror_vma(struct vm_area_struct *vma) ++{ ++ struct vm_area_struct *vma_m; ++ ++ BUG_ON(!vma || vma->vm_start >= vma->vm_end); ++ if (!(vma->vm_mm->pax_flags & MF_PAX_SEGMEXEC) || !(vma->vm_flags & VM_EXEC)) { ++ BUG_ON(vma->vm_mirror); ++ return NULL; ++ } ++ BUG_ON(vma->vm_start < SEGMEXEC_TASK_SIZE && SEGMEXEC_TASK_SIZE < vma->vm_end); ++ vma_m = vma->vm_mirror; ++ BUG_ON(!vma_m || vma_m->vm_mirror != vma); ++ BUG_ON(vma->vm_file != vma_m->vm_file); ++ BUG_ON(vma->vm_end - vma->vm_start != vma_m->vm_end - vma_m->vm_start); ++ BUG_ON(vma->vm_pgoff != vma_m->vm_pgoff); ++ BUG_ON(vma->anon_vma != vma_m->anon_vma && vma->anon_vma->root != vma_m->anon_vma->root); ++ BUG_ON((vma->vm_flags ^ vma_m->vm_flags) & ~(VM_WRITE | VM_MAYWRITE | VM_ACCOUNT | VM_LOCKED | VM_RESERVED)); ++ return vma_m; ++} ++#endif ++ + /* + * Verify that the stack growth is acceptable and + * update accounting. This is shared with both the +@@ -1688,6 +1936,7 @@ static int acct_stack_growth(struct vm_area_struct *vma, unsigned long size, uns + return -ENOMEM; + + /* Stack limit test */ ++ gr_learn_resource(current, RLIMIT_STACK, size, 1); + if (size > ACCESS_ONCE(rlim[RLIMIT_STACK].rlim_cur)) + return -ENOMEM; + +@@ -1698,6 +1947,7 @@ static int acct_stack_growth(struct vm_area_struct *vma, unsigned long size, uns + locked = mm->locked_vm + grow; + limit = ACCESS_ONCE(rlim[RLIMIT_MEMLOCK].rlim_cur); + limit >>= PAGE_SHIFT; ++ gr_learn_resource(current, RLIMIT_MEMLOCK, locked << PAGE_SHIFT, 1); + if (locked > limit && !capable(CAP_IPC_LOCK)) + return -ENOMEM; + } +@@ -1728,37 +1978,48 @@ static int acct_stack_growth(struct vm_area_struct *vma, unsigned long size, uns + * PA-RISC uses this for its stack; IA64 for its Register Backing Store. + * vma is the last one with address > vma->vm_end. Have to extend vma. + */ ++#ifndef CONFIG_IA64 ++static ++#endif + int expand_upwards(struct vm_area_struct *vma, unsigned long address) + { + int error; ++ bool locknext; + + if (!(vma->vm_flags & VM_GROWSUP)) + return -EFAULT; + ++ /* Also guard against wrapping around to address 0. */ ++ if (address < PAGE_ALIGN(address+1)) ++ address = PAGE_ALIGN(address+1); ++ else ++ return -ENOMEM; ++ + /* + * We must make sure the anon_vma is allocated + * so that the anon_vma locking is not a noop. + */ + if (unlikely(anon_vma_prepare(vma))) + return -ENOMEM; ++ locknext = vma->vm_next && (vma->vm_next->vm_flags & VM_GROWSDOWN); ++ if (locknext && anon_vma_prepare(vma->vm_next)) ++ return -ENOMEM; + vma_lock_anon_vma(vma); ++ if (locknext) ++ vma_lock_anon_vma(vma->vm_next); + + /* + * vma->vm_start/vm_end cannot change under us because the caller + * is required to hold the mmap_sem in read mode. We need the +- * anon_vma lock to serialize against concurrent expand_stacks. +- * Also guard against wrapping around to address 0. ++ * anon_vma locks to serialize against concurrent expand_stacks ++ * and expand_upwards. + */ +- if (address < PAGE_ALIGN(address+4)) +- address = PAGE_ALIGN(address+4); +- else { +- vma_unlock_anon_vma(vma); +- return -ENOMEM; +- } + error = 0; + + /* Somebody else might have raced and expanded it already */ +- if (address > vma->vm_end) { ++ if (vma->vm_next && (vma->vm_next->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)) && vma->vm_next->vm_start - address < sysctl_heap_stack_gap) ++ error = -ENOMEM; ++ else if (address > vma->vm_end && (!locknext || vma->vm_next->vm_start >= address)) { + unsigned long size, grow; + + size = address - vma->vm_start; +@@ -1773,6 +2034,8 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address) + } + } + } ++ if (locknext) ++ vma_unlock_anon_vma(vma->vm_next); + vma_unlock_anon_vma(vma); + khugepaged_enter_vma_merge(vma); + return error; +@@ -1786,6 +2049,8 @@ int expand_downwards(struct vm_area_struct *vma, + unsigned long address) + { + int error; ++ bool lockprev = false; ++ struct vm_area_struct *prev; + + /* + * We must make sure the anon_vma is allocated +@@ -1799,6 +2064,15 @@ int expand_downwards(struct vm_area_struct *vma, + if (error) + return error; + ++ prev = vma->vm_prev; ++#if defined(CONFIG_STACK_GROWSUP) || defined(CONFIG_IA64) ++ lockprev = prev && (prev->vm_flags & VM_GROWSUP); ++#endif ++ if (lockprev && anon_vma_prepare(prev)) ++ return -ENOMEM; ++ if (lockprev) ++ vma_lock_anon_vma(prev); ++ + vma_lock_anon_vma(vma); + + /* +@@ -1808,9 +2082,17 @@ int expand_downwards(struct vm_area_struct *vma, + */ + + /* Somebody else might have raced and expanded it already */ +- if (address < vma->vm_start) { ++ if (prev && (prev->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)) && address - prev->vm_end < sysctl_heap_stack_gap) ++ error = -ENOMEM; ++ else if (address < vma->vm_start && (!lockprev || prev->vm_end <= address)) { + unsigned long size, grow; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ struct vm_area_struct *vma_m; ++ ++ vma_m = pax_find_mirror_vma(vma); ++#endif ++ + size = vma->vm_end - address; + grow = (vma->vm_start - address) >> PAGE_SHIFT; + +@@ -1820,11 +2102,22 @@ int expand_downwards(struct vm_area_struct *vma, + if (!error) { + vma->vm_start = address; + vma->vm_pgoff -= grow; ++ track_exec_limit(vma->vm_mm, vma->vm_start, vma->vm_end, vma->vm_flags); ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (vma_m) { ++ vma_m->vm_start -= grow << PAGE_SHIFT; ++ vma_m->vm_pgoff -= grow; ++ } ++#endif ++ + perf_event_mmap(vma); + } + } + } + vma_unlock_anon_vma(vma); ++ if (lockprev) ++ vma_unlock_anon_vma(prev); + khugepaged_enter_vma_merge(vma); + return error; + } +@@ -1894,6 +2187,13 @@ static void remove_vma_list(struct mm_struct *mm, struct vm_area_struct *vma) + do { + long nrpages = vma_pages(vma); + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (vma->vm_start >= SEGMEXEC_TASK_SIZE)) { ++ vma = remove_vma(vma); ++ continue; ++ } ++#endif ++ + mm->total_vm -= nrpages; + vm_stat_account(mm, vma->vm_flags, vma->vm_file, -nrpages); + vma = remove_vma(vma); +@@ -1939,6 +2239,16 @@ detach_vmas_to_be_unmapped(struct mm_struct *mm, struct vm_area_struct *vma, + insertion_point = (prev ? &prev->vm_next : &mm->mmap); + vma->vm_prev = NULL; + do { ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (vma->vm_mirror) { ++ BUG_ON(!vma->vm_mirror->vm_mirror || vma->vm_mirror->vm_mirror != vma); ++ vma->vm_mirror->vm_mirror = NULL; ++ vma->vm_mirror->vm_flags &= ~VM_EXEC; ++ vma->vm_mirror = NULL; ++ } ++#endif ++ + rb_erase(&vma->vm_rb, &mm->mm_rb); + mm->map_count--; + tail_vma = vma; +@@ -1967,14 +2277,33 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma, + struct vm_area_struct *new; + int err = -ENOMEM; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ struct vm_area_struct *vma_m, *new_m = NULL; ++ unsigned long addr_m = addr + SEGMEXEC_TASK_SIZE; ++#endif ++ + if (is_vm_hugetlb_page(vma) && (addr & + ~(huge_page_mask(hstate_vma(vma))))) + return -EINVAL; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ vma_m = pax_find_mirror_vma(vma); ++#endif ++ + new = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL); + if (!new) + goto out_err; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (vma_m) { ++ new_m = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL); ++ if (!new_m) { ++ kmem_cache_free(vm_area_cachep, new); ++ goto out_err; ++ } ++ } ++#endif ++ + /* most fields are the same, copy all, and then fixup */ + *new = *vma; + +@@ -1987,6 +2316,22 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma, + new->vm_pgoff += ((addr - vma->vm_start) >> PAGE_SHIFT); + } + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (vma_m) { ++ *new_m = *vma_m; ++ INIT_LIST_HEAD(&new_m->anon_vma_chain); ++ new_m->vm_mirror = new; ++ new->vm_mirror = new_m; ++ ++ if (new_below) ++ new_m->vm_end = addr_m; ++ else { ++ new_m->vm_start = addr_m; ++ new_m->vm_pgoff += ((addr_m - vma_m->vm_start) >> PAGE_SHIFT); ++ } ++ } ++#endif ++ + pol = mpol_dup(vma_policy(vma)); + if (IS_ERR(pol)) { + err = PTR_ERR(pol); +@@ -2012,6 +2357,42 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma, + else + err = vma_adjust(vma, vma->vm_start, addr, vma->vm_pgoff, new); + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (!err && vma_m) { ++ if (anon_vma_clone(new_m, vma_m)) ++ goto out_free_mpol; ++ ++ mpol_get(pol); ++ vma_set_policy(new_m, pol); ++ ++ if (new_m->vm_file) { ++ get_file(new_m->vm_file); ++ if (vma_m->vm_flags & VM_EXECUTABLE) ++ added_exe_file_vma(mm); ++ } ++ ++ if (new_m->vm_ops && new_m->vm_ops->open) ++ new_m->vm_ops->open(new_m); ++ ++ if (new_below) ++ err = vma_adjust(vma_m, addr_m, vma_m->vm_end, vma_m->vm_pgoff + ++ ((addr_m - new_m->vm_start) >> PAGE_SHIFT), new_m); ++ else ++ err = vma_adjust(vma_m, vma_m->vm_start, addr_m, vma_m->vm_pgoff, new_m); ++ ++ if (err) { ++ if (new_m->vm_ops && new_m->vm_ops->close) ++ new_m->vm_ops->close(new_m); ++ if (new_m->vm_file) { ++ if (vma_m->vm_flags & VM_EXECUTABLE) ++ removed_exe_file_vma(mm); ++ fput(new_m->vm_file); ++ } ++ mpol_put(pol); ++ } ++ } ++#endif ++ + /* Success. */ + if (!err) + return 0; +@@ -2024,10 +2405,18 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma, + removed_exe_file_vma(mm); + fput(new->vm_file); + } +- unlink_anon_vmas(new); + out_free_mpol: + mpol_put(pol); + out_free_vma: ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (new_m) { ++ unlink_anon_vmas(new_m); ++ kmem_cache_free(vm_area_cachep, new_m); ++ } ++#endif ++ ++ unlink_anon_vmas(new); + kmem_cache_free(vm_area_cachep, new); + out_err: + return err; +@@ -2040,6 +2429,15 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma, + int split_vma(struct mm_struct *mm, struct vm_area_struct *vma, + unsigned long addr, int new_below) + { ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (mm->pax_flags & MF_PAX_SEGMEXEC) { ++ BUG_ON(vma->vm_end > SEGMEXEC_TASK_SIZE); ++ if (mm->map_count >= sysctl_max_map_count-1) ++ return -ENOMEM; ++ } else ++#endif ++ + if (mm->map_count >= sysctl_max_map_count) + return -ENOMEM; + +@@ -2051,11 +2449,30 @@ int split_vma(struct mm_struct *mm, struct vm_area_struct *vma, + * work. This now handles partial unmappings. + * Jeremy Fitzhardinge <jeremy@goop.org> + */ ++#ifdef CONFIG_PAX_SEGMEXEC + int do_munmap(struct mm_struct *mm, unsigned long start, size_t len) + { ++ int ret = __do_munmap(mm, start, len); ++ if (ret || !(mm->pax_flags & MF_PAX_SEGMEXEC)) ++ return ret; ++ ++ return __do_munmap(mm, start + SEGMEXEC_TASK_SIZE, len); ++} ++ ++int __do_munmap(struct mm_struct *mm, unsigned long start, size_t len) ++#else ++int do_munmap(struct mm_struct *mm, unsigned long start, size_t len) ++#endif ++{ + unsigned long end; + struct vm_area_struct *vma, *prev, *last; + ++ /* ++ * mm->mmap_sem is required to protect against another thread ++ * changing the mappings in case we sleep. ++ */ ++ verify_mm_writelocked(mm); ++ + if ((start & ~PAGE_MASK) || start > TASK_SIZE || len > TASK_SIZE-start) + return -EINVAL; + +@@ -2130,6 +2547,8 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len) + /* Fix up all other VM information */ + remove_vma_list(mm, vma); + ++ track_exec_limit(mm, start, end, 0UL); ++ + return 0; + } + EXPORT_SYMBOL(do_munmap); +@@ -2139,6 +2558,13 @@ int vm_munmap(unsigned long start, size_t len) + int ret; + struct mm_struct *mm = current->mm; + ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && ++ (len > SEGMEXEC_TASK_SIZE || start > SEGMEXEC_TASK_SIZE-len)) ++ return -EINVAL; ++#endif ++ + down_write(&mm->mmap_sem); + ret = do_munmap(mm, start, len); + up_write(&mm->mmap_sem); +@@ -2152,16 +2578,6 @@ SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len) + return vm_munmap(addr, len); + } + +-static inline void verify_mm_writelocked(struct mm_struct *mm) +-{ +-#ifdef CONFIG_DEBUG_VM +- if (unlikely(down_read_trylock(&mm->mmap_sem))) { +- WARN_ON(1); +- up_read(&mm->mmap_sem); +- } +-#endif +-} +- + /* + * this is really a simplified "do_mmap". it only handles + * anonymous maps. eventually we may be able to do some +@@ -2175,6 +2591,7 @@ static unsigned long do_brk(unsigned long addr, unsigned long len) + struct rb_node ** rb_link, * rb_parent; + pgoff_t pgoff = addr >> PAGE_SHIFT; + int error; ++ unsigned long charged; + + len = PAGE_ALIGN(len); + if (!len) +@@ -2186,16 +2603,30 @@ static unsigned long do_brk(unsigned long addr, unsigned long len) + + flags = VM_DATA_DEFAULT_FLAGS | VM_ACCOUNT | mm->def_flags; + ++#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) ++ if (mm->pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) { ++ flags &= ~VM_EXEC; ++ ++#ifdef CONFIG_PAX_MPROTECT ++ if (mm->pax_flags & MF_PAX_MPROTECT) ++ flags &= ~VM_MAYEXEC; ++#endif ++ ++ } ++#endif ++ + error = get_unmapped_area(NULL, addr, len, 0, MAP_FIXED); + if (error & ~PAGE_MASK) + return error; + ++ charged = len >> PAGE_SHIFT; ++ + /* + * mlock MCL_FUTURE? + */ + if (mm->def_flags & VM_LOCKED) { + unsigned long locked, lock_limit; +- locked = len >> PAGE_SHIFT; ++ locked = charged; + locked += mm->locked_vm; + lock_limit = rlimit(RLIMIT_MEMLOCK); + lock_limit >>= PAGE_SHIFT; +@@ -2212,22 +2643,22 @@ static unsigned long do_brk(unsigned long addr, unsigned long len) + /* + * Clear old maps. this also does some error checking for us + */ +- munmap_back: + vma = find_vma_prepare(mm, addr, &prev, &rb_link, &rb_parent); + if (vma && vma->vm_start < addr + len) { + if (do_munmap(mm, addr, len)) + return -ENOMEM; +- goto munmap_back; +- } ++ vma = find_vma_prepare(mm, addr, &prev, &rb_link, &rb_parent); ++ BUG_ON(vma && vma->vm_start < addr + len); ++ } + + /* Check against address space limits *after* clearing old maps... */ +- if (!may_expand_vm(mm, len >> PAGE_SHIFT)) ++ if (!may_expand_vm(mm, charged)) + return -ENOMEM; + + if (mm->map_count > sysctl_max_map_count) + return -ENOMEM; + +- if (security_vm_enough_memory_mm(mm, len >> PAGE_SHIFT)) ++ if (security_vm_enough_memory_mm(mm, charged)) + return -ENOMEM; + + /* Can we just expand an old private anonymous mapping? */ +@@ -2241,7 +2672,7 @@ static unsigned long do_brk(unsigned long addr, unsigned long len) + */ + vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); + if (!vma) { +- vm_unacct_memory(len >> PAGE_SHIFT); ++ vm_unacct_memory(charged); + return -ENOMEM; + } + +@@ -2255,11 +2686,12 @@ static unsigned long do_brk(unsigned long addr, unsigned long len) + vma_link(mm, vma, prev, rb_link, rb_parent); + out: + perf_event_mmap(vma); +- mm->total_vm += len >> PAGE_SHIFT; ++ mm->total_vm += charged; + if (flags & VM_LOCKED) { + if (!mlock_vma_pages_range(vma, addr, addr + len)) +- mm->locked_vm += (len >> PAGE_SHIFT); ++ mm->locked_vm += charged; + } ++ track_exec_limit(mm, addr, addr + len, flags); + return addr; + } + +@@ -2315,8 +2747,10 @@ void exit_mmap(struct mm_struct *mm) + * Walk the list again, actually closing and freeing it, + * with preemption enabled, without holding any MM locks. + */ +- while (vma) ++ while (vma) { ++ vma->vm_mirror = NULL; + vma = remove_vma(vma); ++ } + + BUG_ON(mm->nr_ptes > (FIRST_USER_ADDRESS+PMD_SIZE-1)>>PMD_SHIFT); + } +@@ -2330,6 +2764,13 @@ int insert_vm_struct(struct mm_struct * mm, struct vm_area_struct * vma) + struct vm_area_struct * __vma, * prev; + struct rb_node ** rb_link, * rb_parent; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ struct vm_area_struct *vma_m = NULL; ++#endif ++ ++ if (security_file_mmap(NULL, 0, 0, 0, vma->vm_start, 1)) ++ return -EPERM; ++ + /* + * The vm_pgoff of a purely anonymous vma should be irrelevant + * until its first write fault, when page's anon_vma and index +@@ -2352,7 +2793,22 @@ int insert_vm_struct(struct mm_struct * mm, struct vm_area_struct * vma) + if ((vma->vm_flags & VM_ACCOUNT) && + security_vm_enough_memory_mm(mm, vma_pages(vma))) + return -ENOMEM; ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (vma->vm_flags & VM_EXEC)) { ++ vma_m = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); ++ if (!vma_m) ++ return -ENOMEM; ++ } ++#endif ++ + vma_link(mm, vma, prev, rb_link, rb_parent); ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (vma_m) ++ BUG_ON(pax_mirror_vma(vma_m, vma)); ++#endif ++ + return 0; + } + +@@ -2371,6 +2827,8 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap, + struct mempolicy *pol; + bool faulted_in_anon_vma = true; + ++ BUG_ON(vma->vm_mirror); ++ + /* + * If anonymous vma has not yet been faulted, update new pgoff + * to match new location, to increase its chance of merging. +@@ -2438,6 +2896,39 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap, + return NULL; + } + ++#ifdef CONFIG_PAX_SEGMEXEC ++long pax_mirror_vma(struct vm_area_struct *vma_m, struct vm_area_struct *vma) ++{ ++ struct vm_area_struct *prev_m; ++ struct rb_node **rb_link_m, *rb_parent_m; ++ struct mempolicy *pol_m; ++ ++ BUG_ON(!(vma->vm_mm->pax_flags & MF_PAX_SEGMEXEC) || !(vma->vm_flags & VM_EXEC)); ++ BUG_ON(vma->vm_mirror || vma_m->vm_mirror); ++ BUG_ON(!mpol_equal(vma_policy(vma), vma_policy(vma_m))); ++ *vma_m = *vma; ++ INIT_LIST_HEAD(&vma_m->anon_vma_chain); ++ if (anon_vma_clone(vma_m, vma)) ++ return -ENOMEM; ++ pol_m = vma_policy(vma_m); ++ mpol_get(pol_m); ++ vma_set_policy(vma_m, pol_m); ++ vma_m->vm_start += SEGMEXEC_TASK_SIZE; ++ vma_m->vm_end += SEGMEXEC_TASK_SIZE; ++ vma_m->vm_flags &= ~(VM_WRITE | VM_MAYWRITE | VM_ACCOUNT | VM_LOCKED); ++ vma_m->vm_page_prot = vm_get_page_prot(vma_m->vm_flags); ++ if (vma_m->vm_file) ++ get_file(vma_m->vm_file); ++ if (vma_m->vm_ops && vma_m->vm_ops->open) ++ vma_m->vm_ops->open(vma_m); ++ find_vma_prepare(vma->vm_mm, vma_m->vm_start, &prev_m, &rb_link_m, &rb_parent_m); ++ vma_link(vma->vm_mm, vma_m, prev_m, rb_link_m, rb_parent_m); ++ vma_m->vm_mirror = vma; ++ vma->vm_mirror = vma_m; ++ return 0; ++} ++#endif ++ + /* + * Return true if the calling process may expand its vm space by the passed + * number of pages +@@ -2449,6 +2940,12 @@ int may_expand_vm(struct mm_struct *mm, unsigned long npages) + + lim = rlimit(RLIMIT_AS) >> PAGE_SHIFT; + ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ cur -= mm->brk_gap; ++#endif ++ ++ gr_learn_resource(current, RLIMIT_AS, (cur + npages) << PAGE_SHIFT, 1); + if (cur + npages > lim) + return 0; + return 1; +@@ -2519,6 +3016,22 @@ int install_special_mapping(struct mm_struct *mm, + vma->vm_start = addr; + vma->vm_end = addr + len; + ++#ifdef CONFIG_PAX_MPROTECT ++ if (mm->pax_flags & MF_PAX_MPROTECT) { ++#ifndef CONFIG_PAX_MPROTECT_COMPAT ++ if ((vm_flags & (VM_WRITE | VM_EXEC)) == (VM_WRITE | VM_EXEC)) ++ return -EPERM; ++ if (!(vm_flags & VM_EXEC)) ++ vm_flags &= ~VM_MAYEXEC; ++#else ++ if ((vm_flags & (VM_WRITE | VM_EXEC)) != VM_EXEC) ++ vm_flags &= ~(VM_EXEC | VM_MAYEXEC); ++#endif ++ else ++ vm_flags &= ~VM_MAYWRITE; ++ } ++#endif ++ + vma->vm_flags = vm_flags | mm->def_flags | VM_DONTEXPAND; + vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); + +diff --git a/mm/mprotect.c b/mm/mprotect.c +index a409926..8b32e6d 100644 +--- a/mm/mprotect.c ++++ b/mm/mprotect.c +@@ -23,10 +23,17 @@ + #include <linux/mmu_notifier.h> + #include <linux/migrate.h> + #include <linux/perf_event.h> ++ ++#ifdef CONFIG_PAX_MPROTECT ++#include <linux/elf.h> ++#include <linux/binfmts.h> ++#endif ++ + #include <asm/uaccess.h> + #include <asm/pgtable.h> + #include <asm/cacheflush.h> + #include <asm/tlbflush.h> ++#include <asm/mmu_context.h> + + #ifndef pgprot_modify + static inline pgprot_t pgprot_modify(pgprot_t oldprot, pgprot_t newprot) +@@ -141,6 +148,48 @@ static void change_protection(struct vm_area_struct *vma, + flush_tlb_range(vma, start, end); + } + ++#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT ++/* called while holding the mmap semaphor for writing except stack expansion */ ++void track_exec_limit(struct mm_struct *mm, unsigned long start, unsigned long end, unsigned long prot) ++{ ++ unsigned long oldlimit, newlimit = 0UL; ++ ++ if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || (__supported_pte_mask & _PAGE_NX)) ++ return; ++ ++ spin_lock(&mm->page_table_lock); ++ oldlimit = mm->context.user_cs_limit; ++ if ((prot & VM_EXEC) && oldlimit < end) ++ /* USER_CS limit moved up */ ++ newlimit = end; ++ else if (!(prot & VM_EXEC) && start < oldlimit && oldlimit <= end) ++ /* USER_CS limit moved down */ ++ newlimit = start; ++ ++ if (newlimit) { ++ mm->context.user_cs_limit = newlimit; ++ ++#ifdef CONFIG_SMP ++ wmb(); ++ cpus_clear(mm->context.cpu_user_cs_mask); ++ cpu_set(smp_processor_id(), mm->context.cpu_user_cs_mask); ++#endif ++ ++ set_user_cs(mm->context.user_cs_base, mm->context.user_cs_limit, smp_processor_id()); ++ } ++ spin_unlock(&mm->page_table_lock); ++ if (newlimit == end) { ++ struct vm_area_struct *vma = find_vma(mm, oldlimit); ++ ++ for (; vma && vma->vm_start < end; vma = vma->vm_next) ++ if (is_vm_hugetlb_page(vma)) ++ hugetlb_change_protection(vma, vma->vm_start, vma->vm_end, vma->vm_page_prot); ++ else ++ change_protection(vma, vma->vm_start, vma->vm_end, vma->vm_page_prot, vma_wants_writenotify(vma)); ++ } ++} ++#endif ++ + int + mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev, + unsigned long start, unsigned long end, unsigned long newflags) +@@ -153,11 +202,29 @@ mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev, + int error; + int dirty_accountable = 0; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ struct vm_area_struct *vma_m = NULL; ++ unsigned long start_m, end_m; ++ ++ start_m = start + SEGMEXEC_TASK_SIZE; ++ end_m = end + SEGMEXEC_TASK_SIZE; ++#endif ++ + if (newflags == oldflags) { + *pprev = vma; + return 0; + } + ++ if (newflags & (VM_READ | VM_WRITE | VM_EXEC)) { ++ struct vm_area_struct *prev = vma->vm_prev, *next = vma->vm_next; ++ ++ if (next && (next->vm_flags & VM_GROWSDOWN) && sysctl_heap_stack_gap > next->vm_start - end) ++ return -ENOMEM; ++ ++ if (prev && (prev->vm_flags & VM_GROWSUP) && sysctl_heap_stack_gap > start - prev->vm_end) ++ return -ENOMEM; ++ } ++ + /* + * If we make a private mapping writable we increase our commit; + * but (without finer accounting) cannot reduce our commit if we +@@ -174,6 +241,42 @@ mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev, + } + } + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && ((oldflags ^ newflags) & VM_EXEC)) { ++ if (start != vma->vm_start) { ++ error = split_vma(mm, vma, start, 1); ++ if (error) ++ goto fail; ++ BUG_ON(!*pprev || (*pprev)->vm_next == vma); ++ *pprev = (*pprev)->vm_next; ++ } ++ ++ if (end != vma->vm_end) { ++ error = split_vma(mm, vma, end, 0); ++ if (error) ++ goto fail; ++ } ++ ++ if (pax_find_mirror_vma(vma)) { ++ error = __do_munmap(mm, start_m, end_m - start_m); ++ if (error) ++ goto fail; ++ } else { ++ vma_m = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); ++ if (!vma_m) { ++ error = -ENOMEM; ++ goto fail; ++ } ++ vma->vm_flags = newflags; ++ error = pax_mirror_vma(vma_m, vma); ++ if (error) { ++ vma->vm_flags = oldflags; ++ goto fail; ++ } ++ } ++ } ++#endif ++ + /* + * First try to merge with previous and/or next vma. + */ +@@ -204,9 +307,21 @@ success: + * vm_flags and vm_page_prot are protected by the mmap_sem + * held in write mode. + */ ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (newflags & VM_EXEC) && ((vma->vm_flags ^ newflags) & VM_READ)) ++ pax_find_mirror_vma(vma)->vm_flags ^= VM_READ; ++#endif ++ + vma->vm_flags = newflags; ++ ++#ifdef CONFIG_PAX_MPROTECT ++ if (mm->binfmt && mm->binfmt->handle_mprotect) ++ mm->binfmt->handle_mprotect(vma, newflags); ++#endif ++ + vma->vm_page_prot = pgprot_modify(vma->vm_page_prot, +- vm_get_page_prot(newflags)); ++ vm_get_page_prot(vma->vm_flags)); + + if (vma_wants_writenotify(vma)) { + vma->vm_page_prot = vm_get_page_prot(newflags & ~VM_SHARED); +@@ -248,6 +363,17 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len, + end = start + len; + if (end <= start) + return -ENOMEM; ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (current->mm->pax_flags & MF_PAX_SEGMEXEC) { ++ if (end > SEGMEXEC_TASK_SIZE) ++ return -EINVAL; ++ } else ++#endif ++ ++ if (end > TASK_SIZE) ++ return -EINVAL; ++ + if (!arch_validate_prot(prot)) + return -EINVAL; + +@@ -255,7 +381,7 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len, + /* + * Does the application expect PROT_READ to imply PROT_EXEC: + */ +- if ((prot & PROT_READ) && (current->personality & READ_IMPLIES_EXEC)) ++ if ((prot & (PROT_READ | PROT_WRITE)) && (current->personality & READ_IMPLIES_EXEC)) + prot |= PROT_EXEC; + + vm_flags = calc_vm_prot_bits(prot); +@@ -288,6 +414,11 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len, + if (start > vma->vm_start) + prev = vma; + ++#ifdef CONFIG_PAX_MPROTECT ++ if (current->mm->binfmt && current->mm->binfmt->handle_mprotect) ++ current->mm->binfmt->handle_mprotect(vma, vm_flags); ++#endif ++ + for (nstart = start ; ; ) { + unsigned long newflags; + +@@ -297,6 +428,14 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len, + + /* newflags >> 4 shift VM_MAY% in place of VM_% */ + if ((newflags & ~(newflags >> 4)) & (VM_READ | VM_WRITE | VM_EXEC)) { ++ if (prot & (PROT_WRITE | PROT_EXEC)) ++ gr_log_rwxmprotect(vma->vm_file); ++ ++ error = -EACCES; ++ goto out; ++ } ++ ++ if (!gr_acl_handle_mprotect(vma->vm_file, prot)) { + error = -EACCES; + goto out; + } +@@ -311,6 +450,9 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len, + error = mprotect_fixup(vma, &prev, nstart, tmp, newflags); + if (error) + goto out; ++ ++ track_exec_limit(current->mm, nstart, tmp, vm_flags); ++ + nstart = tmp; + + if (nstart < prev->vm_end) +diff --git a/mm/mremap.c b/mm/mremap.c +index db8d983..76506cb 100644 +--- a/mm/mremap.c ++++ b/mm/mremap.c +@@ -106,6 +106,12 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd, + continue; + pte = ptep_get_and_clear(mm, old_addr, old_pte); + pte = move_pte(pte, new_vma->vm_page_prot, old_addr, new_addr); ++ ++#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT ++ if (!(__supported_pte_mask & _PAGE_NX) && (new_vma->vm_flags & (VM_PAGEEXEC | VM_EXEC)) == VM_PAGEEXEC) ++ pte = pte_exprotect(pte); ++#endif ++ + set_pte_at(mm, new_addr, new_pte, pte); + } + +@@ -299,6 +305,11 @@ static struct vm_area_struct *vma_to_resize(unsigned long addr, + if (is_vm_hugetlb_page(vma)) + goto Einval; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (pax_find_mirror_vma(vma)) ++ goto Einval; ++#endif ++ + /* We can't remap across vm area boundaries */ + if (old_len > vma->vm_end - addr) + goto Efault; +@@ -355,20 +366,25 @@ static unsigned long mremap_to(unsigned long addr, + unsigned long ret = -EINVAL; + unsigned long charged = 0; + unsigned long map_flags; ++ unsigned long pax_task_size = TASK_SIZE; + + if (new_addr & ~PAGE_MASK) + goto out; + +- if (new_len > TASK_SIZE || new_addr > TASK_SIZE - new_len) ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (mm->pax_flags & MF_PAX_SEGMEXEC) ++ pax_task_size = SEGMEXEC_TASK_SIZE; ++#endif ++ ++ pax_task_size -= PAGE_SIZE; ++ ++ if (new_len > TASK_SIZE || new_addr > pax_task_size - new_len) + goto out; + + /* Check if the location we're moving into overlaps the + * old location at all, and fail if it does. + */ +- if ((new_addr <= addr) && (new_addr+new_len) > addr) +- goto out; +- +- if ((addr <= new_addr) && (addr+old_len) > new_addr) ++ if (addr + old_len > new_addr && new_addr + new_len > addr) + goto out; + + ret = security_file_mmap(NULL, 0, 0, 0, new_addr, 1); +@@ -440,6 +456,7 @@ unsigned long do_mremap(unsigned long addr, + struct vm_area_struct *vma; + unsigned long ret = -EINVAL; + unsigned long charged = 0; ++ unsigned long pax_task_size = TASK_SIZE; + + if (flags & ~(MREMAP_FIXED | MREMAP_MAYMOVE)) + goto out; +@@ -458,6 +475,17 @@ unsigned long do_mremap(unsigned long addr, + if (!new_len) + goto out; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (mm->pax_flags & MF_PAX_SEGMEXEC) ++ pax_task_size = SEGMEXEC_TASK_SIZE; ++#endif ++ ++ pax_task_size -= PAGE_SIZE; ++ ++ if (new_len > pax_task_size || addr > pax_task_size-new_len || ++ old_len > pax_task_size || addr > pax_task_size-old_len) ++ goto out; ++ + if (flags & MREMAP_FIXED) { + if (flags & MREMAP_MAYMOVE) + ret = mremap_to(addr, old_len, new_addr, new_len); +@@ -507,6 +535,7 @@ unsigned long do_mremap(unsigned long addr, + addr + new_len); + } + ret = addr; ++ track_exec_limit(vma->vm_mm, vma->vm_start, addr + new_len, vma->vm_flags); + goto out; + } + } +@@ -533,7 +562,13 @@ unsigned long do_mremap(unsigned long addr, + ret = security_file_mmap(NULL, 0, 0, 0, new_addr, 1); + if (ret) + goto out; ++ ++ map_flags = vma->vm_flags; + ret = move_vma(vma, addr, old_len, new_len, new_addr); ++ if (!(ret & ~PAGE_MASK)) { ++ track_exec_limit(current->mm, addr, addr + old_len, 0UL); ++ track_exec_limit(current->mm, new_addr, new_addr + new_len, map_flags); ++ } + } + out: + if (ret & ~PAGE_MASK) +diff --git a/mm/nommu.c b/mm/nommu.c +index bb8f4f0..40d3e02 100644 +--- a/mm/nommu.c ++++ b/mm/nommu.c +@@ -62,7 +62,6 @@ int sysctl_overcommit_memory = OVERCOMMIT_GUESS; /* heuristic overcommit */ + int sysctl_overcommit_ratio = 50; /* default is 50% */ + int sysctl_max_map_count = DEFAULT_MAX_MAP_COUNT; + int sysctl_nr_trim_pages = CONFIG_NOMMU_INITIAL_TRIM_EXCESS; +-int heap_stack_gap = 0; + + atomic_long_t mmap_pages_allocated; + +@@ -827,15 +826,6 @@ struct vm_area_struct *find_vma(struct mm_struct *mm, unsigned long addr) + EXPORT_SYMBOL(find_vma); + + /* +- * find a VMA +- * - we don't extend stack VMAs under NOMMU conditions +- */ +-struct vm_area_struct *find_extend_vma(struct mm_struct *mm, unsigned long addr) +-{ +- return find_vma(mm, addr); +-} +- +-/* + * expand a stack to a given address + * - not supported under NOMMU conditions + */ +@@ -1580,6 +1570,7 @@ int split_vma(struct mm_struct *mm, struct vm_area_struct *vma, + + /* most fields are the same, copy all, and then fixup */ + *new = *vma; ++ INIT_LIST_HEAD(&new->anon_vma_chain); + *region = *vma->vm_region; + new->vm_region = region; + +diff --git a/mm/page_alloc.c b/mm/page_alloc.c +index 918330f..ae99ae1 100644 +--- a/mm/page_alloc.c ++++ b/mm/page_alloc.c +@@ -335,7 +335,7 @@ out: + * This usage means that zero-order pages may not be compound. + */ + +-static void free_compound_page(struct page *page) ++void free_compound_page(struct page *page) + { + __free_pages_ok(page, compound_order(page)); + } +@@ -692,6 +692,10 @@ static bool free_pages_prepare(struct page *page, unsigned int order) + int i; + int bad = 0; + ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++ unsigned long index = 1UL << order; ++#endif ++ + trace_mm_page_free(page, order); + kmemcheck_free_shadow(page, order); + +@@ -707,6 +711,12 @@ static bool free_pages_prepare(struct page *page, unsigned int order) + debug_check_no_obj_freed(page_address(page), + PAGE_SIZE << order); + } ++ ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++ for (; index; --index) ++ sanitize_highpage(page + index - 1); ++#endif ++ + arch_free_page(page, order); + kernel_map_pages(page, 1 << order, 0); + +@@ -830,8 +840,10 @@ static int prep_new_page(struct page *page, int order, gfp_t gfp_flags) + arch_alloc_page(page, order); + kernel_map_pages(page, 1 << order, 1); + ++#ifndef CONFIG_PAX_MEMORY_SANITIZE + if (gfp_flags & __GFP_ZERO) + prep_zero_page(page, order, gfp_flags); ++#endif + + if (order && (gfp_flags & __GFP_COMP)) + prep_compound_page(page, order); +@@ -3523,7 +3535,13 @@ static int pageblock_is_reserved(unsigned long start_pfn, unsigned long end_pfn) + unsigned long pfn; + + for (pfn = start_pfn; pfn < end_pfn; pfn++) { ++#ifdef CONFIG_X86_32 ++ /* boot failures in VMware 8 on 32bit vanilla since ++ this change */ ++ if (!pfn_valid(pfn) || PageReserved(pfn_to_page(pfn))) ++#else + if (!pfn_valid_within(pfn) || PageReserved(pfn_to_page(pfn))) ++#endif + return 1; + } + return 0; +diff --git a/mm/percpu.c b/mm/percpu.c +index bb4be74..a43ea85 100644 +--- a/mm/percpu.c ++++ b/mm/percpu.c +@@ -122,7 +122,7 @@ static unsigned int pcpu_low_unit_cpu __read_mostly; + static unsigned int pcpu_high_unit_cpu __read_mostly; + + /* the address of the first chunk which starts with the kernel static area */ +-void *pcpu_base_addr __read_mostly; ++void *pcpu_base_addr __read_only; + EXPORT_SYMBOL_GPL(pcpu_base_addr); + + static const int *pcpu_unit_map __read_mostly; /* cpu -> unit */ +diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c +index c20ff48..137702a 100644 +--- a/mm/process_vm_access.c ++++ b/mm/process_vm_access.c +@@ -13,6 +13,7 @@ + #include <linux/uio.h> + #include <linux/sched.h> + #include <linux/highmem.h> ++#include <linux/security.h> + #include <linux/ptrace.h> + #include <linux/slab.h> + #include <linux/syscalls.h> +@@ -258,19 +259,19 @@ static ssize_t process_vm_rw_core(pid_t pid, const struct iovec *lvec, + size_t iov_l_curr_offset = 0; + ssize_t iov_len; + ++ return -ENOSYS; // PaX: until properly audited ++ + /* + * Work out how many pages of struct pages we're going to need + * when eventually calling get_user_pages + */ + for (i = 0; i < riovcnt; i++) { + iov_len = rvec[i].iov_len; +- if (iov_len > 0) { +- nr_pages_iov = ((unsigned long)rvec[i].iov_base +- + iov_len) +- / PAGE_SIZE - (unsigned long)rvec[i].iov_base +- / PAGE_SIZE + 1; +- nr_pages = max(nr_pages, nr_pages_iov); +- } ++ if (iov_len <= 0) ++ continue; ++ nr_pages_iov = ((unsigned long)rvec[i].iov_base + iov_len) / PAGE_SIZE - ++ (unsigned long)rvec[i].iov_base / PAGE_SIZE + 1; ++ nr_pages = max(nr_pages, nr_pages_iov); + } + + if (nr_pages == 0) +@@ -298,6 +299,11 @@ static ssize_t process_vm_rw_core(pid_t pid, const struct iovec *lvec, + goto free_proc_pages; + } + ++ if (gr_handle_ptrace(task, vm_write ? PTRACE_POKETEXT : PTRACE_ATTACH)) { ++ rc = -EPERM; ++ goto put_task_struct; ++ } ++ + mm = mm_access(task, PTRACE_MODE_ATTACH); + if (!mm || IS_ERR(mm)) { + rc = IS_ERR(mm) ? PTR_ERR(mm) : -ESRCH; +diff --git a/mm/rmap.c b/mm/rmap.c +index 5b5ad58..0f77903 100644 +--- a/mm/rmap.c ++++ b/mm/rmap.c +@@ -167,6 +167,10 @@ int anon_vma_prepare(struct vm_area_struct *vma) + struct anon_vma *anon_vma = vma->anon_vma; + struct anon_vma_chain *avc; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ struct anon_vma_chain *avc_m = NULL; ++#endif ++ + might_sleep(); + if (unlikely(!anon_vma)) { + struct mm_struct *mm = vma->vm_mm; +@@ -176,6 +180,12 @@ int anon_vma_prepare(struct vm_area_struct *vma) + if (!avc) + goto out_enomem; + ++#ifdef CONFIG_PAX_SEGMEXEC ++ avc_m = anon_vma_chain_alloc(GFP_KERNEL); ++ if (!avc_m) ++ goto out_enomem_free_avc; ++#endif ++ + anon_vma = find_mergeable_anon_vma(vma); + allocated = NULL; + if (!anon_vma) { +@@ -189,6 +199,18 @@ int anon_vma_prepare(struct vm_area_struct *vma) + /* page_table_lock to protect against threads */ + spin_lock(&mm->page_table_lock); + if (likely(!vma->anon_vma)) { ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ struct vm_area_struct *vma_m = pax_find_mirror_vma(vma); ++ ++ if (vma_m) { ++ BUG_ON(vma_m->anon_vma); ++ vma_m->anon_vma = anon_vma; ++ anon_vma_chain_link(vma_m, avc_m, anon_vma); ++ avc_m = NULL; ++ } ++#endif ++ + vma->anon_vma = anon_vma; + anon_vma_chain_link(vma, avc, anon_vma); + allocated = NULL; +@@ -199,12 +221,24 @@ int anon_vma_prepare(struct vm_area_struct *vma) + + if (unlikely(allocated)) + put_anon_vma(allocated); ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (unlikely(avc_m)) ++ anon_vma_chain_free(avc_m); ++#endif ++ + if (unlikely(avc)) + anon_vma_chain_free(avc); + } + return 0; + + out_enomem_free_avc: ++ ++#ifdef CONFIG_PAX_SEGMEXEC ++ if (avc_m) ++ anon_vma_chain_free(avc_m); ++#endif ++ + anon_vma_chain_free(avc); + out_enomem: + return -ENOMEM; +@@ -240,7 +274,7 @@ static inline void unlock_anon_vma_root(struct anon_vma *root) + * Attach the anon_vmas from src to dst. + * Returns 0 on success, -ENOMEM on failure. + */ +-int anon_vma_clone(struct vm_area_struct *dst, struct vm_area_struct *src) ++int anon_vma_clone(struct vm_area_struct *dst, const struct vm_area_struct *src) + { + struct anon_vma_chain *avc, *pavc; + struct anon_vma *root = NULL; +@@ -318,7 +352,7 @@ void anon_vma_moveto_tail(struct vm_area_struct *dst) + * the corresponding VMA in the parent process is attached to. + * Returns 0 on success, non-zero on failure. + */ +-int anon_vma_fork(struct vm_area_struct *vma, struct vm_area_struct *pvma) ++int anon_vma_fork(struct vm_area_struct *vma, const struct vm_area_struct *pvma) + { + struct anon_vma_chain *avc; + struct anon_vma *anon_vma; +diff --git a/mm/shmem.c b/mm/shmem.c +index 9d65a02..7c877e7 100644 +--- a/mm/shmem.c ++++ b/mm/shmem.c +@@ -31,7 +31,7 @@ + #include <linux/export.h> + #include <linux/swap.h> + +-static struct vfsmount *shm_mnt; ++struct vfsmount *shm_mnt; + + #ifdef CONFIG_SHMEM + /* +@@ -74,7 +74,7 @@ static struct vfsmount *shm_mnt; + #define BOGO_DIRENT_SIZE 20 + + /* Symlink up to this size is kmalloc'ed instead of using a swappable page */ +-#define SHORT_SYMLINK_LEN 128 ++#define SHORT_SYMLINK_LEN 64 + + struct shmem_xattr { + struct list_head list; /* anchored by shmem_inode_info->xattr_list */ +@@ -2236,8 +2236,7 @@ int shmem_fill_super(struct super_block *sb, void *data, int silent) + int err = -ENOMEM; + + /* Round up to L1_CACHE_BYTES to resist false sharing */ +- sbinfo = kzalloc(max((int)sizeof(struct shmem_sb_info), +- L1_CACHE_BYTES), GFP_KERNEL); ++ sbinfo = kzalloc(max(sizeof(struct shmem_sb_info), L1_CACHE_BYTES), GFP_KERNEL); + if (!sbinfo) + return -ENOMEM; + +diff --git a/mm/slab.c b/mm/slab.c +index e901a36..ee8fe97 100644 +--- a/mm/slab.c ++++ b/mm/slab.c +@@ -153,7 +153,7 @@ + + /* Legal flag mask for kmem_cache_create(). */ + #if DEBUG +-# define CREATE_MASK (SLAB_RED_ZONE | \ ++# define CREATE_MASK (SLAB_USERCOPY | SLAB_RED_ZONE | \ + SLAB_POISON | SLAB_HWCACHE_ALIGN | \ + SLAB_CACHE_DMA | \ + SLAB_STORE_USER | \ +@@ -161,7 +161,7 @@ + SLAB_DESTROY_BY_RCU | SLAB_MEM_SPREAD | \ + SLAB_DEBUG_OBJECTS | SLAB_NOLEAKTRACE | SLAB_NOTRACK) + #else +-# define CREATE_MASK (SLAB_HWCACHE_ALIGN | \ ++# define CREATE_MASK (SLAB_USERCOPY | SLAB_HWCACHE_ALIGN | \ + SLAB_CACHE_DMA | \ + SLAB_RECLAIM_ACCOUNT | SLAB_PANIC | \ + SLAB_DESTROY_BY_RCU | SLAB_MEM_SPREAD | \ +@@ -290,7 +290,7 @@ struct kmem_list3 { + * Need this for bootstrapping a per node allocator. + */ + #define NUM_INIT_LISTS (3 * MAX_NUMNODES) +-static struct kmem_list3 __initdata initkmem_list3[NUM_INIT_LISTS]; ++static struct kmem_list3 initkmem_list3[NUM_INIT_LISTS]; + #define CACHE_CACHE 0 + #define SIZE_AC MAX_NUMNODES + #define SIZE_L3 (2 * MAX_NUMNODES) +@@ -391,10 +391,10 @@ static void kmem_list3_init(struct kmem_list3 *parent) + if ((x)->max_freeable < i) \ + (x)->max_freeable = i; \ + } while (0) +-#define STATS_INC_ALLOCHIT(x) atomic_inc(&(x)->allochit) +-#define STATS_INC_ALLOCMISS(x) atomic_inc(&(x)->allocmiss) +-#define STATS_INC_FREEHIT(x) atomic_inc(&(x)->freehit) +-#define STATS_INC_FREEMISS(x) atomic_inc(&(x)->freemiss) ++#define STATS_INC_ALLOCHIT(x) atomic_inc_unchecked(&(x)->allochit) ++#define STATS_INC_ALLOCMISS(x) atomic_inc_unchecked(&(x)->allocmiss) ++#define STATS_INC_FREEHIT(x) atomic_inc_unchecked(&(x)->freehit) ++#define STATS_INC_FREEMISS(x) atomic_inc_unchecked(&(x)->freemiss) + #else + #define STATS_INC_ACTIVE(x) do { } while (0) + #define STATS_DEC_ACTIVE(x) do { } while (0) +@@ -542,7 +542,7 @@ static inline void *index_to_obj(struct kmem_cache *cache, struct slab *slab, + * reciprocal_divide(offset, cache->reciprocal_buffer_size) + */ + static inline unsigned int obj_to_index(const struct kmem_cache *cache, +- const struct slab *slab, void *obj) ++ const struct slab *slab, const void *obj) + { + u32 offset = (obj - slab->s_mem); + return reciprocal_divide(offset, cache->reciprocal_buffer_size); +@@ -568,7 +568,7 @@ struct cache_names { + static struct cache_names __initdata cache_names[] = { + #define CACHE(x) { .name = "size-" #x, .name_dma = "size-" #x "(DMA)" }, + #include <linux/kmalloc_sizes.h> +- {NULL,} ++ {NULL} + #undef CACHE + }; + +@@ -1588,7 +1588,7 @@ void __init kmem_cache_init(void) + sizes[INDEX_AC].cs_cachep = kmem_cache_create(names[INDEX_AC].name, + sizes[INDEX_AC].cs_size, + ARCH_KMALLOC_MINALIGN, +- ARCH_KMALLOC_FLAGS|SLAB_PANIC, ++ ARCH_KMALLOC_FLAGS|SLAB_PANIC|SLAB_USERCOPY, + NULL); + + if (INDEX_AC != INDEX_L3) { +@@ -1596,7 +1596,7 @@ void __init kmem_cache_init(void) + kmem_cache_create(names[INDEX_L3].name, + sizes[INDEX_L3].cs_size, + ARCH_KMALLOC_MINALIGN, +- ARCH_KMALLOC_FLAGS|SLAB_PANIC, ++ ARCH_KMALLOC_FLAGS|SLAB_PANIC|SLAB_USERCOPY, + NULL); + } + +@@ -1614,7 +1614,7 @@ void __init kmem_cache_init(void) + sizes->cs_cachep = kmem_cache_create(names->name, + sizes->cs_size, + ARCH_KMALLOC_MINALIGN, +- ARCH_KMALLOC_FLAGS|SLAB_PANIC, ++ ARCH_KMALLOC_FLAGS|SLAB_PANIC|SLAB_USERCOPY, + NULL); + } + #ifdef CONFIG_ZONE_DMA +@@ -4390,10 +4390,10 @@ static int s_show(struct seq_file *m, void *p) + } + /* cpu stats */ + { +- unsigned long allochit = atomic_read(&cachep->allochit); +- unsigned long allocmiss = atomic_read(&cachep->allocmiss); +- unsigned long freehit = atomic_read(&cachep->freehit); +- unsigned long freemiss = atomic_read(&cachep->freemiss); ++ unsigned long allochit = atomic_read_unchecked(&cachep->allochit); ++ unsigned long allocmiss = atomic_read_unchecked(&cachep->allocmiss); ++ unsigned long freehit = atomic_read_unchecked(&cachep->freehit); ++ unsigned long freemiss = atomic_read_unchecked(&cachep->freemiss); + + seq_printf(m, " : cpustat %6lu %6lu %6lu %6lu", + allochit, allocmiss, freehit, freemiss); +@@ -4652,13 +4652,62 @@ static int __init slab_proc_init(void) + { + proc_create("slabinfo",S_IWUSR|S_IRUSR,NULL,&proc_slabinfo_operations); + #ifdef CONFIG_DEBUG_SLAB_LEAK +- proc_create("slab_allocators", 0, NULL, &proc_slabstats_operations); ++ proc_create("slab_allocators", S_IRUSR, NULL, &proc_slabstats_operations); + #endif + return 0; + } + module_init(slab_proc_init); + #endif + ++void check_object_size(const void *ptr, unsigned long n, bool to) ++{ ++ ++#ifdef CONFIG_PAX_USERCOPY ++ struct page *page; ++ struct kmem_cache *cachep = NULL; ++ struct slab *slabp; ++ unsigned int objnr; ++ unsigned long offset; ++ const char *type; ++ ++ if (!n) ++ return; ++ ++ type = "<null>"; ++ if (ZERO_OR_NULL_PTR(ptr)) ++ goto report; ++ ++ if (!virt_addr_valid(ptr)) ++ return; ++ ++ page = virt_to_head_page(ptr); ++ ++ type = "<process stack>"; ++ if (!PageSlab(page)) { ++ if (object_is_on_stack(ptr, n) == -1) ++ goto report; ++ return; ++ } ++ ++ cachep = page_get_cache(page); ++ type = cachep->name; ++ if (!(cachep->flags & SLAB_USERCOPY)) ++ goto report; ++ ++ slabp = page_get_slab(page); ++ objnr = obj_to_index(cachep, slabp, ptr); ++ BUG_ON(objnr >= cachep->num); ++ offset = ptr - index_to_obj(cachep, slabp, objnr) - obj_offset(cachep); ++ if (offset <= obj_size(cachep) && n <= obj_size(cachep) - offset) ++ return; ++ ++report: ++ pax_report_usercopy(ptr, n, to, type); ++#endif ++ ++} ++EXPORT_SYMBOL(check_object_size); ++ + /** + * ksize - get the actual amount of memory allocated for a given object + * @objp: Pointer to the object +diff --git a/mm/slob.c b/mm/slob.c +index 8105be4..e045f96 100644 +--- a/mm/slob.c ++++ b/mm/slob.c +@@ -29,7 +29,7 @@ + * If kmalloc is asked for objects of PAGE_SIZE or larger, it calls + * alloc_pages() directly, allocating compound pages so the page order + * does not have to be separately tracked, and also stores the exact +- * allocation size in page->private so that it can be used to accurately ++ * allocation size in slob_page->size so that it can be used to accurately + * provide ksize(). These objects are detected in kfree() because slob_page() + * is false for them. + * +@@ -58,6 +58,7 @@ + */ + + #include <linux/kernel.h> ++#include <linux/sched.h> + #include <linux/slab.h> + #include <linux/mm.h> + #include <linux/swap.h> /* struct reclaim_state */ +@@ -102,7 +103,8 @@ struct slob_page { + unsigned long flags; /* mandatory */ + atomic_t _count; /* mandatory */ + slobidx_t units; /* free units left in page */ +- unsigned long pad[2]; ++ unsigned long pad[1]; ++ unsigned long size; /* size when >=PAGE_SIZE */ + slob_t *free; /* first free slob_t in page */ + struct list_head list; /* linked list of free pages */ + }; +@@ -135,7 +137,7 @@ static LIST_HEAD(free_slob_large); + */ + static inline int is_slob_page(struct slob_page *sp) + { +- return PageSlab((struct page *)sp); ++ return PageSlab((struct page *)sp) && !sp->size; + } + + static inline void set_slob_page(struct slob_page *sp) +@@ -150,7 +152,7 @@ static inline void clear_slob_page(struct slob_page *sp) + + static inline struct slob_page *slob_page(const void *addr) + { +- return (struct slob_page *)virt_to_page(addr); ++ return (struct slob_page *)virt_to_head_page(addr); + } + + /* +@@ -210,7 +212,7 @@ static void set_slob(slob_t *s, slobidx_t size, slob_t *next) + /* + * Return the size of a slob block. + */ +-static slobidx_t slob_units(slob_t *s) ++static slobidx_t slob_units(const slob_t *s) + { + if (s->units > 0) + return s->units; +@@ -220,7 +222,7 @@ static slobidx_t slob_units(slob_t *s) + /* + * Return the next free slob block pointer after this one. + */ +-static slob_t *slob_next(slob_t *s) ++static slob_t *slob_next(const slob_t *s) + { + slob_t *base = (slob_t *)((unsigned long)s & PAGE_MASK); + slobidx_t next; +@@ -235,7 +237,7 @@ static slob_t *slob_next(slob_t *s) + /* + * Returns true if s is the last free block in its page. + */ +-static int slob_last(slob_t *s) ++static int slob_last(const slob_t *s) + { + return !((unsigned long)slob_next(s) & ~PAGE_MASK); + } +@@ -254,6 +256,7 @@ static void *slob_new_pages(gfp_t gfp, int order, int node) + if (!page) + return NULL; + ++ set_slob_page(page); + return page_address(page); + } + +@@ -370,11 +373,11 @@ static void *slob_alloc(size_t size, gfp_t gfp, int align, int node) + if (!b) + return NULL; + sp = slob_page(b); +- set_slob_page(sp); + + spin_lock_irqsave(&slob_lock, flags); + sp->units = SLOB_UNITS(PAGE_SIZE); + sp->free = b; ++ sp->size = 0; + INIT_LIST_HEAD(&sp->list); + set_slob(b, SLOB_UNITS(PAGE_SIZE), b + SLOB_UNITS(PAGE_SIZE)); + set_slob_page_free(sp, slob_list); +@@ -476,10 +479,9 @@ out: + * End of slob allocator proper. Begin kmem_cache_alloc and kmalloc frontend. + */ + +-void *__kmalloc_node(size_t size, gfp_t gfp, int node) ++static void *__kmalloc_node_align(size_t size, gfp_t gfp, int node, int align) + { +- unsigned int *m; +- int align = max(ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN); ++ slob_t *m; + void *ret; + + gfp &= gfp_allowed_mask; +@@ -494,7 +496,10 @@ void *__kmalloc_node(size_t size, gfp_t gfp, int node) + + if (!m) + return NULL; +- *m = size; ++ BUILD_BUG_ON(ARCH_KMALLOC_MINALIGN < 2 * SLOB_UNIT); ++ BUILD_BUG_ON(ARCH_SLAB_MINALIGN < 2 * SLOB_UNIT); ++ m[0].units = size; ++ m[1].units = align; + ret = (void *)m + align; + + trace_kmalloc_node(_RET_IP_, ret, +@@ -506,16 +511,25 @@ void *__kmalloc_node(size_t size, gfp_t gfp, int node) + gfp |= __GFP_COMP; + ret = slob_new_pages(gfp, order, node); + if (ret) { +- struct page *page; +- page = virt_to_page(ret); +- page->private = size; ++ struct slob_page *sp; ++ sp = slob_page(ret); ++ sp->size = size; + } + + trace_kmalloc_node(_RET_IP_, ret, + size, PAGE_SIZE << order, gfp, node); + } + +- kmemleak_alloc(ret, size, 1, gfp); ++ return ret; ++} ++ ++void *__kmalloc_node(size_t size, gfp_t gfp, int node) ++{ ++ int align = max(ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN); ++ void *ret = __kmalloc_node_align(size, gfp, node, align); ++ ++ if (!ZERO_OR_NULL_PTR(ret)) ++ kmemleak_alloc(ret, size, 1, gfp); + return ret; + } + EXPORT_SYMBOL(__kmalloc_node); +@@ -533,13 +547,92 @@ void kfree(const void *block) + sp = slob_page(block); + if (is_slob_page(sp)) { + int align = max(ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN); +- unsigned int *m = (unsigned int *)(block - align); +- slob_free(m, *m + align); +- } else ++ slob_t *m = (slob_t *)(block - align); ++ slob_free(m, m[0].units + align); ++ } else { ++ clear_slob_page(sp); ++ free_slob_page(sp); ++ sp->size = 0; + put_page(&sp->page); ++ } + } + EXPORT_SYMBOL(kfree); + ++void check_object_size(const void *ptr, unsigned long n, bool to) ++{ ++ ++#ifdef CONFIG_PAX_USERCOPY ++ struct slob_page *sp; ++ const slob_t *free; ++ const void *base; ++ unsigned long flags; ++ const char *type; ++ ++ if (!n) ++ return; ++ ++ type = "<null>"; ++ if (ZERO_OR_NULL_PTR(ptr)) ++ goto report; ++ ++ if (!virt_addr_valid(ptr)) ++ return; ++ ++ type = "<process stack>"; ++ sp = slob_page(ptr); ++ if (!PageSlab((struct page *)sp)) { ++ if (object_is_on_stack(ptr, n) == -1) ++ goto report; ++ return; ++ } ++ ++ type = "<slob>"; ++ if (sp->size) { ++ base = page_address(&sp->page); ++ if (base <= ptr && n <= sp->size - (ptr - base)) ++ return; ++ goto report; ++ } ++ ++ /* some tricky double walking to find the chunk */ ++ spin_lock_irqsave(&slob_lock, flags); ++ base = (void *)((unsigned long)ptr & PAGE_MASK); ++ free = sp->free; ++ ++ while (!slob_last(free) && (void *)free <= ptr) { ++ base = free + slob_units(free); ++ free = slob_next(free); ++ } ++ ++ while (base < (void *)free) { ++ slobidx_t m = ((slob_t *)base)[0].units, align = ((slob_t *)base)[1].units; ++ int size = SLOB_UNIT * SLOB_UNITS(m + align); ++ int offset; ++ ++ if (ptr < base + align) ++ break; ++ ++ offset = ptr - base - align; ++ if (offset >= m) { ++ base += size; ++ continue; ++ } ++ ++ if (n > m - offset) ++ break; ++ ++ spin_unlock_irqrestore(&slob_lock, flags); ++ return; ++ } ++ ++ spin_unlock_irqrestore(&slob_lock, flags); ++report: ++ pax_report_usercopy(ptr, n, to, type); ++#endif ++ ++} ++EXPORT_SYMBOL(check_object_size); ++ + /* can't use ksize for kmem_cache_alloc memory, only kmalloc */ + size_t ksize(const void *block) + { +@@ -552,10 +645,10 @@ size_t ksize(const void *block) + sp = slob_page(block); + if (is_slob_page(sp)) { + int align = max(ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN); +- unsigned int *m = (unsigned int *)(block - align); +- return SLOB_UNITS(*m) * SLOB_UNIT; ++ slob_t *m = (slob_t *)(block - align); ++ return SLOB_UNITS(m[0].units) * SLOB_UNIT; + } else +- return sp->page.private; ++ return sp->size; + } + EXPORT_SYMBOL(ksize); + +@@ -571,8 +664,13 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size, + { + struct kmem_cache *c; + ++#ifdef CONFIG_PAX_USERCOPY ++ c = __kmalloc_node_align(sizeof(struct kmem_cache), ++ GFP_KERNEL, -1, ARCH_KMALLOC_MINALIGN); ++#else + c = slob_alloc(sizeof(struct kmem_cache), + GFP_KERNEL, ARCH_KMALLOC_MINALIGN, -1); ++#endif + + if (c) { + c->name = name; +@@ -614,17 +712,25 @@ void *kmem_cache_alloc_node(struct kmem_cache *c, gfp_t flags, int node) + + lockdep_trace_alloc(flags); + ++#ifdef CONFIG_PAX_USERCOPY ++ b = __kmalloc_node_align(c->size, flags, node, c->align); ++#else + if (c->size < PAGE_SIZE) { + b = slob_alloc(c->size, flags, c->align, node); + trace_kmem_cache_alloc_node(_RET_IP_, b, c->size, + SLOB_UNITS(c->size) * SLOB_UNIT, + flags, node); + } else { ++ struct slob_page *sp; ++ + b = slob_new_pages(flags, get_order(c->size), node); ++ sp = slob_page(b); ++ sp->size = c->size; + trace_kmem_cache_alloc_node(_RET_IP_, b, c->size, + PAGE_SIZE << get_order(c->size), + flags, node); + } ++#endif + + if (c->ctor) + c->ctor(b); +@@ -636,10 +742,16 @@ EXPORT_SYMBOL(kmem_cache_alloc_node); + + static void __kmem_cache_free(void *b, int size) + { +- if (size < PAGE_SIZE) ++ struct slob_page *sp = slob_page(b); ++ ++ if (is_slob_page(sp)) + slob_free(b, size); +- else ++ else { ++ clear_slob_page(sp); ++ free_slob_page(sp); ++ sp->size = 0; + slob_free_pages(b, get_order(size)); ++ } + } + + static void kmem_rcu_free(struct rcu_head *head) +@@ -652,17 +764,31 @@ static void kmem_rcu_free(struct rcu_head *head) + + void kmem_cache_free(struct kmem_cache *c, void *b) + { ++ int size = c->size; ++ ++#ifdef CONFIG_PAX_USERCOPY ++ if (size + c->align < PAGE_SIZE) { ++ size += c->align; ++ b -= c->align; ++ } ++#endif ++ + kmemleak_free_recursive(b, c->flags); + if (unlikely(c->flags & SLAB_DESTROY_BY_RCU)) { + struct slob_rcu *slob_rcu; +- slob_rcu = b + (c->size - sizeof(struct slob_rcu)); +- slob_rcu->size = c->size; ++ slob_rcu = b + (size - sizeof(struct slob_rcu)); ++ slob_rcu->size = size; + call_rcu(&slob_rcu->head, kmem_rcu_free); + } else { +- __kmem_cache_free(b, c->size); ++ __kmem_cache_free(b, size); + } + ++#ifdef CONFIG_PAX_USERCOPY ++ trace_kfree(_RET_IP_, b); ++#else + trace_kmem_cache_free(_RET_IP_, b); ++#endif ++ + } + EXPORT_SYMBOL(kmem_cache_free); + +diff --git a/mm/slub.c b/mm/slub.c +index 71de9b5..dd263c5 100644 +--- a/mm/slub.c ++++ b/mm/slub.c +@@ -209,7 +209,7 @@ struct track { + + enum track_item { TRACK_ALLOC, TRACK_FREE }; + +-#ifdef CONFIG_SYSFS ++#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD) + static int sysfs_slab_add(struct kmem_cache *); + static int sysfs_slab_alias(struct kmem_cache *, const char *); + static void sysfs_slab_remove(struct kmem_cache *); +@@ -538,7 +538,7 @@ static void print_track(const char *s, struct track *t) + if (!t->addr) + return; + +- printk(KERN_ERR "INFO: %s in %pS age=%lu cpu=%u pid=%d\n", ++ printk(KERN_ERR "INFO: %s in %pA age=%lu cpu=%u pid=%d\n", + s, (void *)t->addr, jiffies - t->when, t->cpu, t->pid); + #ifdef CONFIG_STACKTRACE + { +@@ -2603,6 +2603,8 @@ void kmem_cache_free(struct kmem_cache *s, void *x) + + page = virt_to_head_page(x); + ++ BUG_ON(!PageSlab(page)); ++ + slab_free(s, page, x, _RET_IP_); + + trace_kmem_cache_free(_RET_IP_, x); +@@ -2636,7 +2638,7 @@ static int slub_min_objects; + * Merge control. If this is set then no merging of slab caches will occur. + * (Could be removed. This was introduced to pacify the merge skeptics.) + */ +-static int slub_nomerge; ++static int slub_nomerge = 1; + + /* + * Calculate the order of allocation given an slab object size. +@@ -3089,7 +3091,7 @@ static int kmem_cache_open(struct kmem_cache *s, + else + s->cpu_partial = 30; + +- s->refcount = 1; ++ atomic_set(&s->refcount, 1); + #ifdef CONFIG_NUMA + s->remote_node_defrag_ratio = 1000; + #endif +@@ -3193,8 +3195,7 @@ static inline int kmem_cache_close(struct kmem_cache *s) + void kmem_cache_destroy(struct kmem_cache *s) + { + down_write(&slub_lock); +- s->refcount--; +- if (!s->refcount) { ++ if (atomic_dec_and_test(&s->refcount)) { + list_del(&s->list); + up_write(&slub_lock); + if (kmem_cache_close(s)) { +@@ -3405,6 +3406,50 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node) + EXPORT_SYMBOL(__kmalloc_node); + #endif + ++void check_object_size(const void *ptr, unsigned long n, bool to) ++{ ++ ++#ifdef CONFIG_PAX_USERCOPY ++ struct page *page; ++ struct kmem_cache *s = NULL; ++ unsigned long offset; ++ const char *type; ++ ++ if (!n) ++ return; ++ ++ type = "<null>"; ++ if (ZERO_OR_NULL_PTR(ptr)) ++ goto report; ++ ++ if (!virt_addr_valid(ptr)) ++ return; ++ ++ page = virt_to_head_page(ptr); ++ ++ type = "<process stack>"; ++ if (!PageSlab(page)) { ++ if (object_is_on_stack(ptr, n) == -1) ++ goto report; ++ return; ++ } ++ ++ s = page->slab; ++ type = s->name; ++ if (!(s->flags & SLAB_USERCOPY)) ++ goto report; ++ ++ offset = (ptr - page_address(page)) % s->size; ++ if (offset <= s->objsize && n <= s->objsize - offset) ++ return; ++ ++report: ++ pax_report_usercopy(ptr, n, to, type); ++#endif ++ ++} ++EXPORT_SYMBOL(check_object_size); ++ + size_t ksize(const void *object) + { + struct page *page; +@@ -3679,7 +3724,7 @@ static void __init kmem_cache_bootstrap_fixup(struct kmem_cache *s) + int node; + + list_add(&s->list, &slab_caches); +- s->refcount = -1; ++ atomic_set(&s->refcount, -1); + + for_each_node_state(node, N_NORMAL_MEMORY) { + struct kmem_cache_node *n = get_node(s, node); +@@ -3799,17 +3844,17 @@ void __init kmem_cache_init(void) + + /* Caches that are not of the two-to-the-power-of size */ + if (KMALLOC_MIN_SIZE <= 32) { +- kmalloc_caches[1] = create_kmalloc_cache("kmalloc-96", 96, 0); ++ kmalloc_caches[1] = create_kmalloc_cache("kmalloc-96", 96, SLAB_USERCOPY); + caches++; + } + + if (KMALLOC_MIN_SIZE <= 64) { +- kmalloc_caches[2] = create_kmalloc_cache("kmalloc-192", 192, 0); ++ kmalloc_caches[2] = create_kmalloc_cache("kmalloc-192", 192, SLAB_USERCOPY); + caches++; + } + + for (i = KMALLOC_SHIFT_LOW; i < SLUB_PAGE_SHIFT; i++) { +- kmalloc_caches[i] = create_kmalloc_cache("kmalloc", 1 << i, 0); ++ kmalloc_caches[i] = create_kmalloc_cache("kmalloc", 1 << i, SLAB_USERCOPY); + caches++; + } + +@@ -3877,7 +3922,7 @@ static int slab_unmergeable(struct kmem_cache *s) + /* + * We may have set a slab to be unmergeable during bootstrap. + */ +- if (s->refcount < 0) ++ if (atomic_read(&s->refcount) < 0) + return 1; + + return 0; +@@ -3936,7 +3981,7 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size, + down_write(&slub_lock); + s = find_mergeable(size, align, flags, name, ctor); + if (s) { +- s->refcount++; ++ atomic_inc(&s->refcount); + /* + * Adjust the object sizes so that we clear + * the complete object on kzalloc. +@@ -3945,7 +3990,7 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size, + s->inuse = max_t(int, s->inuse, ALIGN(size, sizeof(void *))); + + if (sysfs_slab_alias(s, name)) { +- s->refcount--; ++ atomic_dec(&s->refcount); + goto err; + } + up_write(&slub_lock); +@@ -4074,7 +4119,7 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags, + } + #endif + +-#ifdef CONFIG_SYSFS ++#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD) + static int count_inuse(struct page *page) + { + return page->inuse; +@@ -4461,12 +4506,12 @@ static void resiliency_test(void) + validate_slab_cache(kmalloc_caches[9]); + } + #else +-#ifdef CONFIG_SYSFS ++#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD) + static void resiliency_test(void) {}; + #endif + #endif + +-#ifdef CONFIG_SYSFS ++#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD) + enum slab_stat_type { + SL_ALL, /* All slabs */ + SL_PARTIAL, /* Only partially allocated slabs */ +@@ -4709,7 +4754,7 @@ SLAB_ATTR_RO(ctor); + + static ssize_t aliases_show(struct kmem_cache *s, char *buf) + { +- return sprintf(buf, "%d\n", s->refcount - 1); ++ return sprintf(buf, "%d\n", atomic_read(&s->refcount) - 1); + } + SLAB_ATTR_RO(aliases); + +@@ -5280,6 +5325,7 @@ static char *create_unique_id(struct kmem_cache *s) + return name; + } + ++#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD) + static int sysfs_slab_add(struct kmem_cache *s) + { + int err; +@@ -5342,6 +5388,7 @@ static void sysfs_slab_remove(struct kmem_cache *s) + kobject_del(&s->kobj); + kobject_put(&s->kobj); + } ++#endif + + /* + * Need to buffer aliases during bootup until sysfs becomes +@@ -5355,6 +5402,7 @@ struct saved_alias { + + static struct saved_alias *alias_list; + ++#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD) + static int sysfs_slab_alias(struct kmem_cache *s, const char *name) + { + struct saved_alias *al; +@@ -5377,6 +5425,7 @@ static int sysfs_slab_alias(struct kmem_cache *s, const char *name) + alias_list = al; + return 0; + } ++#endif + + static int __init slab_sysfs_init(void) + { +diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c +index 1b7e22a..3fcd4f3 100644 +--- a/mm/sparse-vmemmap.c ++++ b/mm/sparse-vmemmap.c +@@ -128,7 +128,7 @@ pud_t * __meminit vmemmap_pud_populate(pgd_t *pgd, unsigned long addr, int node) + void *p = vmemmap_alloc_block(PAGE_SIZE, node); + if (!p) + return NULL; +- pud_populate(&init_mm, pud, p); ++ pud_populate_kernel(&init_mm, pud, p); + } + return pud; + } +@@ -140,7 +140,7 @@ pgd_t * __meminit vmemmap_pgd_populate(unsigned long addr, int node) + void *p = vmemmap_alloc_block(PAGE_SIZE, node); + if (!p) + return NULL; +- pgd_populate(&init_mm, pgd, p); ++ pgd_populate_kernel(&init_mm, pgd, p); + } + return pgd; + } +diff --git a/mm/swap.c b/mm/swap.c +index 5c13f13..f1cfc13 100644 +--- a/mm/swap.c ++++ b/mm/swap.c +@@ -30,6 +30,7 @@ + #include <linux/backing-dev.h> + #include <linux/memcontrol.h> + #include <linux/gfp.h> ++#include <linux/hugetlb.h> + + #include "internal.h" + +@@ -70,6 +71,8 @@ static void __put_compound_page(struct page *page) + + __page_cache_release(page); + dtor = get_compound_page_dtor(page); ++ if (!PageHuge(page)) ++ BUG_ON(dtor != free_compound_page); + (*dtor)(page); + } + +diff --git a/mm/swapfile.c b/mm/swapfile.c +index 38186d9..bfba6d3 100644 +--- a/mm/swapfile.c ++++ b/mm/swapfile.c +@@ -61,7 +61,7 @@ static DEFINE_MUTEX(swapon_mutex); + + static DECLARE_WAIT_QUEUE_HEAD(proc_poll_wait); + /* Activity counter to indicate that a swapon or swapoff has occurred */ +-static atomic_t proc_poll_event = ATOMIC_INIT(0); ++static atomic_unchecked_t proc_poll_event = ATOMIC_INIT(0); + + static inline unsigned char swap_count(unsigned char ent) + { +@@ -1671,7 +1671,7 @@ SYSCALL_DEFINE1(swapoff, const char __user *, specialfile) + } + filp_close(swap_file, NULL); + err = 0; +- atomic_inc(&proc_poll_event); ++ atomic_inc_unchecked(&proc_poll_event); + wake_up_interruptible(&proc_poll_wait); + + out_dput: +@@ -1687,8 +1687,8 @@ static unsigned swaps_poll(struct file *file, poll_table *wait) + + poll_wait(file, &proc_poll_wait, wait); + +- if (seq->poll_event != atomic_read(&proc_poll_event)) { +- seq->poll_event = atomic_read(&proc_poll_event); ++ if (seq->poll_event != atomic_read_unchecked(&proc_poll_event)) { ++ seq->poll_event = atomic_read_unchecked(&proc_poll_event); + return POLLIN | POLLRDNORM | POLLERR | POLLPRI; + } + +@@ -1786,7 +1786,7 @@ static int swaps_open(struct inode *inode, struct file *file) + return ret; + + seq = file->private_data; +- seq->poll_event = atomic_read(&proc_poll_event); ++ seq->poll_event = atomic_read_unchecked(&proc_poll_event); + return 0; + } + +@@ -2123,7 +2123,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags) + (p->flags & SWP_DISCARDABLE) ? "D" : ""); + + mutex_unlock(&swapon_mutex); +- atomic_inc(&proc_poll_event); ++ atomic_inc_unchecked(&proc_poll_event); + wake_up_interruptible(&proc_poll_wait); + + if (S_ISREG(inode->i_mode)) +diff --git a/mm/util.c b/mm/util.c +index ae962b3..0bba886 100644 +--- a/mm/util.c ++++ b/mm/util.c +@@ -284,6 +284,12 @@ done: + void arch_pick_mmap_layout(struct mm_struct *mm) + { + mm->mmap_base = TASK_UNMAPPED_BASE; ++ ++#ifdef CONFIG_PAX_RANDMMAP ++ if (mm->pax_flags & MF_PAX_RANDMMAP) ++ mm->mmap_base += mm->delta_mmap; ++#endif ++ + mm->get_unmapped_area = arch_get_unmapped_area; + mm->unmap_area = arch_unmap_area; + } +diff --git a/mm/vmalloc.c b/mm/vmalloc.c +index 1196c77..2e608e8 100644 +--- a/mm/vmalloc.c ++++ b/mm/vmalloc.c +@@ -39,8 +39,19 @@ static void vunmap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end) + + pte = pte_offset_kernel(pmd, addr); + do { +- pte_t ptent = ptep_get_and_clear(&init_mm, addr, pte); +- WARN_ON(!pte_none(ptent) && !pte_present(ptent)); ++ ++#if defined(CONFIG_MODULES) && defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++ if ((unsigned long)MODULES_EXEC_VADDR <= addr && addr < (unsigned long)MODULES_EXEC_END) { ++ BUG_ON(!pte_exec(*pte)); ++ set_pte_at(&init_mm, addr, pte, pfn_pte(__pa(addr) >> PAGE_SHIFT, PAGE_KERNEL_EXEC)); ++ continue; ++ } ++#endif ++ ++ { ++ pte_t ptent = ptep_get_and_clear(&init_mm, addr, pte); ++ WARN_ON(!pte_none(ptent) && !pte_present(ptent)); ++ } + } while (pte++, addr += PAGE_SIZE, addr != end); + } + +@@ -91,6 +102,7 @@ static int vmap_pte_range(pmd_t *pmd, unsigned long addr, + unsigned long end, pgprot_t prot, struct page **pages, int *nr) + { + pte_t *pte; ++ int ret = -ENOMEM; + + /* + * nr is a running index into the array which helps higher level +@@ -100,17 +112,30 @@ static int vmap_pte_range(pmd_t *pmd, unsigned long addr, + pte = pte_alloc_kernel(pmd, addr); + if (!pte) + return -ENOMEM; ++ ++ pax_open_kernel(); + do { + struct page *page = pages[*nr]; + +- if (WARN_ON(!pte_none(*pte))) +- return -EBUSY; +- if (WARN_ON(!page)) +- return -ENOMEM; ++#if defined(CONFIG_MODULES) && defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++ if (pgprot_val(prot) & _PAGE_NX) ++#endif ++ ++ if (WARN_ON(!pte_none(*pte))) { ++ ret = -EBUSY; ++ goto out; ++ } ++ if (WARN_ON(!page)) { ++ ret = -ENOMEM; ++ goto out; ++ } + set_pte_at(&init_mm, addr, pte, mk_pte(page, prot)); + (*nr)++; + } while (pte++, addr += PAGE_SIZE, addr != end); +- return 0; ++ ret = 0; ++out: ++ pax_close_kernel(); ++ return ret; + } + + static int vmap_pmd_range(pud_t *pud, unsigned long addr, +@@ -119,7 +144,7 @@ static int vmap_pmd_range(pud_t *pud, unsigned long addr, + pmd_t *pmd; + unsigned long next; + +- pmd = pmd_alloc(&init_mm, pud, addr); ++ pmd = pmd_alloc_kernel(&init_mm, pud, addr); + if (!pmd) + return -ENOMEM; + do { +@@ -136,7 +161,7 @@ static int vmap_pud_range(pgd_t *pgd, unsigned long addr, + pud_t *pud; + unsigned long next; + +- pud = pud_alloc(&init_mm, pgd, addr); ++ pud = pud_alloc_kernel(&init_mm, pgd, addr); + if (!pud) + return -ENOMEM; + do { +@@ -191,11 +216,20 @@ int is_vmalloc_or_module_addr(const void *x) + * and fall back on vmalloc() if that fails. Others + * just put it in the vmalloc space. + */ +-#if defined(CONFIG_MODULES) && defined(MODULES_VADDR) ++#ifdef CONFIG_MODULES ++#ifdef MODULES_VADDR + unsigned long addr = (unsigned long)x; + if (addr >= MODULES_VADDR && addr < MODULES_END) + return 1; + #endif ++ ++#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) ++ if (x >= (const void *)MODULES_EXEC_VADDR && x < (const void *)MODULES_EXEC_END) ++ return 1; ++#endif ++ ++#endif ++ + return is_vmalloc_addr(x); + } + +@@ -216,8 +250,14 @@ struct page *vmalloc_to_page(const void *vmalloc_addr) + + if (!pgd_none(*pgd)) { + pud_t *pud = pud_offset(pgd, addr); ++#ifdef CONFIG_X86 ++ if (!pud_large(*pud)) ++#endif + if (!pud_none(*pud)) { + pmd_t *pmd = pmd_offset(pud, addr); ++#ifdef CONFIG_X86 ++ if (!pmd_large(*pmd)) ++#endif + if (!pmd_none(*pmd)) { + pte_t *ptep, pte; + +@@ -332,6 +372,10 @@ static void purge_vmap_area_lazy(void); + static struct vmap_area *alloc_vmap_area(unsigned long size, + unsigned long align, + unsigned long vstart, unsigned long vend, ++ int node, gfp_t gfp_mask) __size_overflow(1); ++static struct vmap_area *alloc_vmap_area(unsigned long size, ++ unsigned long align, ++ unsigned long vstart, unsigned long vend, + int node, gfp_t gfp_mask) + { + struct vmap_area *va; +@@ -1320,6 +1364,16 @@ static struct vm_struct *__get_vm_area_node(unsigned long size, + struct vm_struct *area; + + BUG_ON(in_interrupt()); ++ ++#if defined(CONFIG_MODULES) && defined(CONFIG_X86) && defined(CONFIG_PAX_KERNEXEC) ++ if (flags & VM_KERNEXEC) { ++ if (start != VMALLOC_START || end != VMALLOC_END) ++ return NULL; ++ start = (unsigned long)MODULES_EXEC_VADDR; ++ end = (unsigned long)MODULES_EXEC_END; ++ } ++#endif ++ + if (flags & VM_IOREMAP) { + int bit = fls(size); + +@@ -1552,6 +1606,11 @@ void *vmap(struct page **pages, unsigned int count, + if (count > totalram_pages) + return NULL; + ++#if defined(CONFIG_MODULES) && defined(CONFIG_X86) && defined(CONFIG_PAX_KERNEXEC) ++ if (!(pgprot_val(prot) & _PAGE_NX)) ++ flags |= VM_KERNEXEC; ++#endif ++ + area = get_vm_area_caller((count << PAGE_SHIFT), flags, + __builtin_return_address(0)); + if (!area) +@@ -1653,6 +1712,13 @@ void *__vmalloc_node_range(unsigned long size, unsigned long align, + if (!size || (size >> PAGE_SHIFT) > totalram_pages) + goto fail; + ++#if defined(CONFIG_MODULES) && defined(CONFIG_X86) && defined(CONFIG_PAX_KERNEXEC) ++ if (!(pgprot_val(prot) & _PAGE_NX)) ++ area = __get_vm_area_node(size, align, VM_ALLOC | VM_UNLIST | VM_KERNEXEC, ++ VMALLOC_START, VMALLOC_END, node, gfp_mask, caller); ++ else ++#endif ++ + area = __get_vm_area_node(size, align, VM_ALLOC | VM_UNLIST, + start, end, node, gfp_mask, caller); + if (!area) +@@ -1826,10 +1892,9 @@ EXPORT_SYMBOL(vzalloc_node); + * For tight control over page level allocator and protection flags + * use __vmalloc() instead. + */ +- + void *vmalloc_exec(unsigned long size) + { +- return __vmalloc_node(size, 1, GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL_EXEC, ++ return __vmalloc_node(size, 1, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO, PAGE_KERNEL_EXEC, + -1, __builtin_return_address(0)); + } + +@@ -2124,6 +2189,8 @@ int remap_vmalloc_range(struct vm_area_struct *vma, void *addr, + unsigned long uaddr = vma->vm_start; + unsigned long usize = vma->vm_end - vma->vm_start; + ++ BUG_ON(vma->vm_mirror); ++ + if ((PAGE_SIZE-1) & (unsigned long)addr) + return -EINVAL; + +@@ -2376,8 +2443,8 @@ struct vm_struct **pcpu_get_vm_areas(const unsigned long *offsets, + return NULL; + } + +- vms = kzalloc(sizeof(vms[0]) * nr_vms, GFP_KERNEL); +- vas = kzalloc(sizeof(vas[0]) * nr_vms, GFP_KERNEL); ++ vms = kcalloc(nr_vms, sizeof(vms[0]), GFP_KERNEL); ++ vas = kcalloc(nr_vms, sizeof(vas[0]), GFP_KERNEL); + if (!vas || !vms) + goto err_free2; + +diff --git a/mm/vmstat.c b/mm/vmstat.c +index 7db1b9b..e9f6b07 100644 +--- a/mm/vmstat.c ++++ b/mm/vmstat.c +@@ -78,7 +78,7 @@ void vm_events_fold_cpu(int cpu) + * + * vm_stat contains the global counters + */ +-atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS] __cacheline_aligned_in_smp; ++atomic_long_unchecked_t vm_stat[NR_VM_ZONE_STAT_ITEMS] __cacheline_aligned_in_smp; + EXPORT_SYMBOL(vm_stat); + + #ifdef CONFIG_SMP +@@ -454,7 +454,7 @@ void refresh_cpu_vm_stats(int cpu) + v = p->vm_stat_diff[i]; + p->vm_stat_diff[i] = 0; + local_irq_restore(flags); +- atomic_long_add(v, &zone->vm_stat[i]); ++ atomic_long_add_unchecked(v, &zone->vm_stat[i]); + global_diff[i] += v; + #ifdef CONFIG_NUMA + /* 3 seconds idle till flush */ +@@ -492,7 +492,7 @@ void refresh_cpu_vm_stats(int cpu) + + for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) + if (global_diff[i]) +- atomic_long_add(global_diff[i], &vm_stat[i]); ++ atomic_long_add_unchecked(global_diff[i], &vm_stat[i]); + } + + #endif +@@ -1208,10 +1208,20 @@ static int __init setup_vmstat(void) + start_cpu_timer(cpu); + #endif + #ifdef CONFIG_PROC_FS +- proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations); +- proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops); +- proc_create("vmstat", S_IRUGO, NULL, &proc_vmstat_file_operations); +- proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations); ++ { ++ mode_t gr_mode = S_IRUGO; ++#ifdef CONFIG_GRKERNSEC_PROC_ADD ++ gr_mode = S_IRUSR; ++#endif ++ proc_create("buddyinfo", gr_mode, NULL, &fragmentation_file_operations); ++ proc_create("pagetypeinfo", gr_mode, NULL, &pagetypeinfo_file_ops); ++#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP ++ proc_create("vmstat", gr_mode | S_IRGRP, NULL, &proc_vmstat_file_operations); ++#else ++ proc_create("vmstat", gr_mode, NULL, &proc_vmstat_file_operations); ++#endif ++ proc_create("zoneinfo", gr_mode, NULL, &proc_zoneinfo_file_operations); ++ } + #endif + return 0; + } +diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c +index efea35b..9c8dd0b 100644 +--- a/net/8021q/vlan.c ++++ b/net/8021q/vlan.c +@@ -554,8 +554,7 @@ static int vlan_ioctl_handler(struct net *net, void __user *arg) + err = -EPERM; + if (!capable(CAP_NET_ADMIN)) + break; +- if ((args.u.name_type >= 0) && +- (args.u.name_type < VLAN_NAME_TYPE_HIGHEST)) { ++ if (args.u.name_type < VLAN_NAME_TYPE_HIGHEST) { + struct vlan_net *vn; + + vn = net_generic(net, vlan_net_id); +diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c +index fccae26..e7ece2f 100644 +--- a/net/9p/trans_fd.c ++++ b/net/9p/trans_fd.c +@@ -425,7 +425,7 @@ static int p9_fd_write(struct p9_client *client, void *v, int len) + oldfs = get_fs(); + set_fs(get_ds()); + /* The cast to a user pointer is valid due to the set_fs() */ +- ret = vfs_write(ts->wr, (__force void __user *)v, len, &ts->wr->f_pos); ++ ret = vfs_write(ts->wr, (void __force_user *)v, len, &ts->wr->f_pos); + set_fs(oldfs); + + if (ret <= 0 && ret != -ERESTARTSYS && ret != -EAGAIN) +diff --git a/net/atm/atm_misc.c b/net/atm/atm_misc.c +index 876fbe8..8bbea9f 100644 +--- a/net/atm/atm_misc.c ++++ b/net/atm/atm_misc.c +@@ -17,7 +17,7 @@ int atm_charge(struct atm_vcc *vcc, int truesize) + if (atomic_read(&sk_atm(vcc)->sk_rmem_alloc) <= sk_atm(vcc)->sk_rcvbuf) + return 1; + atm_return(vcc, truesize); +- atomic_inc(&vcc->stats->rx_drop); ++ atomic_inc_unchecked(&vcc->stats->rx_drop); + return 0; + } + EXPORT_SYMBOL(atm_charge); +@@ -39,7 +39,7 @@ struct sk_buff *atm_alloc_charge(struct atm_vcc *vcc, int pdu_size, + } + } + atm_return(vcc, guess); +- atomic_inc(&vcc->stats->rx_drop); ++ atomic_inc_unchecked(&vcc->stats->rx_drop); + return NULL; + } + EXPORT_SYMBOL(atm_alloc_charge); +@@ -86,7 +86,7 @@ EXPORT_SYMBOL(atm_pcr_goal); + + void sonet_copy_stats(struct k_sonet_stats *from, struct sonet_stats *to) + { +-#define __HANDLE_ITEM(i) to->i = atomic_read(&from->i) ++#define __HANDLE_ITEM(i) to->i = atomic_read_unchecked(&from->i) + __SONET_ITEMS + #undef __HANDLE_ITEM + } +@@ -94,7 +94,7 @@ EXPORT_SYMBOL(sonet_copy_stats); + + void sonet_subtract_stats(struct k_sonet_stats *from, struct sonet_stats *to) + { +-#define __HANDLE_ITEM(i) atomic_sub(to->i, &from->i) ++#define __HANDLE_ITEM(i) atomic_sub_unchecked(to->i,&from->i) + __SONET_ITEMS + #undef __HANDLE_ITEM + } +diff --git a/net/atm/lec.h b/net/atm/lec.h +index dfc0719..47c5322 100644 +--- a/net/atm/lec.h ++++ b/net/atm/lec.h +@@ -48,7 +48,7 @@ struct lane2_ops { + const u8 *tlvs, u32 sizeoftlvs); + void (*associate_indicator) (struct net_device *dev, const u8 *mac_addr, + const u8 *tlvs, u32 sizeoftlvs); +-}; ++} __no_const; + + /* + * ATM LAN Emulation supports both LLC & Dix Ethernet EtherType +diff --git a/net/atm/mpc.h b/net/atm/mpc.h +index 0919a88..a23d54e 100644 +--- a/net/atm/mpc.h ++++ b/net/atm/mpc.h +@@ -33,7 +33,7 @@ struct mpoa_client { + struct mpc_parameters parameters; /* parameters for this client */ + + const struct net_device_ops *old_ops; +- struct net_device_ops new_ops; ++ net_device_ops_no_const new_ops; + }; + + +diff --git a/net/atm/proc.c b/net/atm/proc.c +index 0d020de..011c7bb 100644 +--- a/net/atm/proc.c ++++ b/net/atm/proc.c +@@ -45,9 +45,9 @@ static void add_stats(struct seq_file *seq, const char *aal, + const struct k_atm_aal_stats *stats) + { + seq_printf(seq, "%s ( %d %d %d %d %d )", aal, +- atomic_read(&stats->tx), atomic_read(&stats->tx_err), +- atomic_read(&stats->rx), atomic_read(&stats->rx_err), +- atomic_read(&stats->rx_drop)); ++ atomic_read_unchecked(&stats->tx),atomic_read_unchecked(&stats->tx_err), ++ atomic_read_unchecked(&stats->rx),atomic_read_unchecked(&stats->rx_err), ++ atomic_read_unchecked(&stats->rx_drop)); + } + + static void atm_dev_info(struct seq_file *seq, const struct atm_dev *dev) +diff --git a/net/atm/resources.c b/net/atm/resources.c +index 23f45ce..c748f1a 100644 +--- a/net/atm/resources.c ++++ b/net/atm/resources.c +@@ -160,7 +160,7 @@ EXPORT_SYMBOL(atm_dev_deregister); + static void copy_aal_stats(struct k_atm_aal_stats *from, + struct atm_aal_stats *to) + { +-#define __HANDLE_ITEM(i) to->i = atomic_read(&from->i) ++#define __HANDLE_ITEM(i) to->i = atomic_read_unchecked(&from->i) + __AAL_STAT_ITEMS + #undef __HANDLE_ITEM + } +@@ -168,7 +168,7 @@ static void copy_aal_stats(struct k_atm_aal_stats *from, + static void subtract_aal_stats(struct k_atm_aal_stats *from, + struct atm_aal_stats *to) + { +-#define __HANDLE_ITEM(i) atomic_sub(to->i, &from->i) ++#define __HANDLE_ITEM(i) atomic_sub_unchecked(to->i, &from->i) + __AAL_STAT_ITEMS + #undef __HANDLE_ITEM + } +diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c +index a6d5d63..1cc6c2b 100644 +--- a/net/batman-adv/bat_iv_ogm.c ++++ b/net/batman-adv/bat_iv_ogm.c +@@ -539,7 +539,7 @@ static void bat_iv_ogm_schedule(struct hard_iface *hard_iface, + + /* change sequence number to network order */ + batman_ogm_packet->seqno = +- htonl((uint32_t)atomic_read(&hard_iface->seqno)); ++ htonl((uint32_t)atomic_read_unchecked(&hard_iface->seqno)); + + batman_ogm_packet->ttvn = atomic_read(&bat_priv->ttvn); + batman_ogm_packet->tt_crc = htons((uint16_t) +@@ -559,7 +559,7 @@ static void bat_iv_ogm_schedule(struct hard_iface *hard_iface, + else + batman_ogm_packet->gw_flags = NO_FLAGS; + +- atomic_inc(&hard_iface->seqno); ++ atomic_inc_unchecked(&hard_iface->seqno); + + slide_own_bcast_window(hard_iface); + bat_iv_ogm_queue_add(bat_priv, hard_iface->packet_buff, +@@ -917,7 +917,7 @@ static void bat_iv_ogm_process(const struct ethhdr *ethhdr, + return; + + /* could be changed by schedule_own_packet() */ +- if_incoming_seqno = atomic_read(&if_incoming->seqno); ++ if_incoming_seqno = atomic_read_unchecked(&if_incoming->seqno); + + has_directlink_flag = (batman_ogm_packet->flags & DIRECTLINK ? 1 : 0); + +diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c +index 3778977..f6a9450 100644 +--- a/net/batman-adv/hard-interface.c ++++ b/net/batman-adv/hard-interface.c +@@ -328,8 +328,8 @@ int hardif_enable_interface(struct hard_iface *hard_iface, + hard_iface->batman_adv_ptype.dev = hard_iface->net_dev; + dev_add_pack(&hard_iface->batman_adv_ptype); + +- atomic_set(&hard_iface->seqno, 1); +- atomic_set(&hard_iface->frag_seqno, 1); ++ atomic_set_unchecked(&hard_iface->seqno, 1); ++ atomic_set_unchecked(&hard_iface->frag_seqno, 1); + bat_info(hard_iface->soft_iface, "Adding interface: %s\n", + hard_iface->net_dev->name); + +diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c +index a5590f4..8d31969 100644 +--- a/net/batman-adv/soft-interface.c ++++ b/net/batman-adv/soft-interface.c +@@ -645,7 +645,7 @@ static int interface_tx(struct sk_buff *skb, struct net_device *soft_iface) + + /* set broadcast sequence number */ + bcast_packet->seqno = +- htonl(atomic_inc_return(&bat_priv->bcast_seqno)); ++ htonl(atomic_inc_return_unchecked(&bat_priv->bcast_seqno)); + + add_bcast_packet_to_list(bat_priv, skb, 1); + +@@ -841,7 +841,7 @@ struct net_device *softif_create(const char *name) + atomic_set(&bat_priv->batman_queue_left, BATMAN_QUEUE_LEN); + + atomic_set(&bat_priv->mesh_state, MESH_INACTIVE); +- atomic_set(&bat_priv->bcast_seqno, 1); ++ atomic_set_unchecked(&bat_priv->bcast_seqno, 1); + atomic_set(&bat_priv->ttvn, 0); + atomic_set(&bat_priv->tt_local_changes, 0); + atomic_set(&bat_priv->tt_ogm_append_cnt, 0); +diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h +index 302efb5..1590365 100644 +--- a/net/batman-adv/types.h ++++ b/net/batman-adv/types.h +@@ -38,8 +38,8 @@ struct hard_iface { + int16_t if_num; + char if_status; + struct net_device *net_dev; +- atomic_t seqno; +- atomic_t frag_seqno; ++ atomic_unchecked_t seqno; ++ atomic_unchecked_t frag_seqno; + unsigned char *packet_buff; + int packet_len; + struct kobject *hardif_obj; +@@ -155,7 +155,7 @@ struct bat_priv { + atomic_t orig_interval; /* uint */ + atomic_t hop_penalty; /* uint */ + atomic_t log_level; /* uint */ +- atomic_t bcast_seqno; ++ atomic_unchecked_t bcast_seqno; + atomic_t bcast_queue_left; + atomic_t batman_queue_left; + atomic_t ttvn; /* translation table version number */ +diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c +index 676f6a6..3b4e668 100644 +--- a/net/batman-adv/unicast.c ++++ b/net/batman-adv/unicast.c +@@ -264,7 +264,7 @@ int frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv, + frag1->flags = UNI_FRAG_HEAD | large_tail; + frag2->flags = large_tail; + +- seqno = atomic_add_return(2, &hard_iface->frag_seqno); ++ seqno = atomic_add_return_unchecked(2, &hard_iface->frag_seqno); + frag1->seqno = htons(seqno - 1); + frag2->seqno = htons(seqno); + +diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c +index 5238b6b..c9798ce 100644 +--- a/net/bluetooth/hci_conn.c ++++ b/net/bluetooth/hci_conn.c +@@ -233,7 +233,7 @@ void hci_le_ltk_reply(struct hci_conn *conn, u8 ltk[16]) + memset(&cp, 0, sizeof(cp)); + + cp.handle = cpu_to_le16(conn->handle); +- memcpy(cp.ltk, ltk, sizeof(ltk)); ++ memcpy(cp.ltk, ltk, sizeof(cp.ltk)); + + hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); + } +diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c +index 6f9c25b..d19fd66 100644 +--- a/net/bluetooth/l2cap_core.c ++++ b/net/bluetooth/l2cap_core.c +@@ -2466,8 +2466,10 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len, voi + break; + + case L2CAP_CONF_RFC: +- if (olen == sizeof(rfc)) +- memcpy(&rfc, (void *)val, olen); ++ if (olen != sizeof(rfc)) ++ break; ++ ++ memcpy(&rfc, (void *)val, olen); + + if (test_bit(CONF_STATE2_DEVICE, &chan->conf_state) && + rfc.mode != chan->mode) +@@ -2585,8 +2587,10 @@ static void l2cap_conf_rfc_get(struct l2cap_chan *chan, void *rsp, int len) + + switch (type) { + case L2CAP_CONF_RFC: +- if (olen == sizeof(rfc)) +- memcpy(&rfc, (void *)val, olen); ++ if (olen != sizeof(rfc)) ++ break; ++ ++ memcpy(&rfc, (void *)val, olen); + goto done; + } + } +diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c +index 5fe2ff3..10968b5 100644 +--- a/net/bridge/netfilter/ebtables.c ++++ b/net/bridge/netfilter/ebtables.c +@@ -1523,7 +1523,7 @@ static int do_ebt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len) + tmp.valid_hooks = t->table->valid_hooks; + } + mutex_unlock(&ebt_mutex); +- if (copy_to_user(user, &tmp, *len) != 0){ ++ if (*len > sizeof(tmp) || copy_to_user(user, &tmp, *len) != 0){ + BUGPRINT("c2u Didn't work\n"); + ret = -EFAULT; + break; +diff --git a/net/caif/cfctrl.c b/net/caif/cfctrl.c +index 5cf5222..6f704ad 100644 +--- a/net/caif/cfctrl.c ++++ b/net/caif/cfctrl.c +@@ -9,6 +9,7 @@ + #include <linux/stddef.h> + #include <linux/spinlock.h> + #include <linux/slab.h> ++#include <linux/sched.h> + #include <net/caif/caif_layer.h> + #include <net/caif/cfpkt.h> + #include <net/caif/cfctrl.h> +@@ -42,8 +43,8 @@ struct cflayer *cfctrl_create(void) + memset(&dev_info, 0, sizeof(dev_info)); + dev_info.id = 0xff; + cfsrvl_init(&this->serv, 0, &dev_info, false); +- atomic_set(&this->req_seq_no, 1); +- atomic_set(&this->rsp_seq_no, 1); ++ atomic_set_unchecked(&this->req_seq_no, 1); ++ atomic_set_unchecked(&this->rsp_seq_no, 1); + this->serv.layer.receive = cfctrl_recv; + sprintf(this->serv.layer.name, "ctrl"); + this->serv.layer.ctrlcmd = cfctrl_ctrlcmd; +@@ -129,8 +130,8 @@ static void cfctrl_insert_req(struct cfctrl *ctrl, + struct cfctrl_request_info *req) + { + spin_lock_bh(&ctrl->info_list_lock); +- atomic_inc(&ctrl->req_seq_no); +- req->sequence_no = atomic_read(&ctrl->req_seq_no); ++ atomic_inc_unchecked(&ctrl->req_seq_no); ++ req->sequence_no = atomic_read_unchecked(&ctrl->req_seq_no); + list_add_tail(&req->list, &ctrl->list); + spin_unlock_bh(&ctrl->info_list_lock); + } +@@ -148,7 +149,7 @@ static struct cfctrl_request_info *cfctrl_remove_req(struct cfctrl *ctrl, + if (p != first) + pr_warn("Requests are not received in order\n"); + +- atomic_set(&ctrl->rsp_seq_no, ++ atomic_set_unchecked(&ctrl->rsp_seq_no, + p->sequence_no); + list_del(&p->list); + goto out; +diff --git a/net/can/gw.c b/net/can/gw.c +index 3d79b12..8de85fa 100644 +--- a/net/can/gw.c ++++ b/net/can/gw.c +@@ -96,7 +96,7 @@ struct cf_mod { + struct { + void (*xor)(struct can_frame *cf, struct cgw_csum_xor *xor); + void (*crc8)(struct can_frame *cf, struct cgw_csum_crc8 *crc8); +- } csumfunc; ++ } __no_const csumfunc; + }; + + +diff --git a/net/compat.c b/net/compat.c +index e055708..3f80795 100644 +--- a/net/compat.c ++++ b/net/compat.c +@@ -71,9 +71,9 @@ int get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr __user *umsg) + __get_user(kmsg->msg_controllen, &umsg->msg_controllen) || + __get_user(kmsg->msg_flags, &umsg->msg_flags)) + return -EFAULT; +- kmsg->msg_name = compat_ptr(tmp1); +- kmsg->msg_iov = compat_ptr(tmp2); +- kmsg->msg_control = compat_ptr(tmp3); ++ kmsg->msg_name = (void __force_kernel *)compat_ptr(tmp1); ++ kmsg->msg_iov = (void __force_kernel *)compat_ptr(tmp2); ++ kmsg->msg_control = (void __force_kernel *)compat_ptr(tmp3); + return 0; + } + +@@ -85,7 +85,7 @@ int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov, + + if (kern_msg->msg_namelen) { + if (mode == VERIFY_READ) { +- int err = move_addr_to_kernel(kern_msg->msg_name, ++ int err = move_addr_to_kernel((void __force_user *)kern_msg->msg_name, + kern_msg->msg_namelen, + kern_address); + if (err < 0) +@@ -96,7 +96,7 @@ int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov, + kern_msg->msg_name = NULL; + + tot_len = iov_from_user_compat_to_kern(kern_iov, +- (struct compat_iovec __user *)kern_msg->msg_iov, ++ (struct compat_iovec __force_user *)kern_msg->msg_iov, + kern_msg->msg_iovlen); + if (tot_len >= 0) + kern_msg->msg_iov = kern_iov; +@@ -116,20 +116,20 @@ int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov, + + #define CMSG_COMPAT_FIRSTHDR(msg) \ + (((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \ +- (struct compat_cmsghdr __user *)((msg)->msg_control) : \ ++ (struct compat_cmsghdr __force_user *)((msg)->msg_control) : \ + (struct compat_cmsghdr __user *)NULL) + + #define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \ + ((ucmlen) >= sizeof(struct compat_cmsghdr) && \ + (ucmlen) <= (unsigned long) \ + ((mhdr)->msg_controllen - \ +- ((char *)(ucmsg) - (char *)(mhdr)->msg_control))) ++ ((char __force_kernel *)(ucmsg) - (char *)(mhdr)->msg_control))) + + static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg, + struct compat_cmsghdr __user *cmsg, int cmsg_len) + { + char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len); +- if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) > ++ if ((unsigned long)(ptr + 1 - (char __force_user *)msg->msg_control) > + msg->msg_controllen) + return NULL; + return (struct compat_cmsghdr __user *)ptr; +@@ -219,7 +219,7 @@ Efault: + + int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data) + { +- struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; ++ struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __force_user *) kmsg->msg_control; + struct compat_cmsghdr cmhdr; + int cmlen; + +@@ -275,7 +275,7 @@ int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *dat + + void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm) + { +- struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; ++ struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __force_user *) kmsg->msg_control; + int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int); + int fdnum = scm->fp->count; + struct file **fp = scm->fp->fp; +@@ -372,7 +372,7 @@ static int do_set_sock_timeout(struct socket *sock, int level, + return -EFAULT; + old_fs = get_fs(); + set_fs(KERNEL_DS); +- err = sock_setsockopt(sock, level, optname, (char *)&ktime, sizeof(ktime)); ++ err = sock_setsockopt(sock, level, optname, (char __force_user *)&ktime, sizeof(ktime)); + set_fs(old_fs); + + return err; +@@ -433,7 +433,7 @@ static int do_get_sock_timeout(struct socket *sock, int level, int optname, + len = sizeof(ktime); + old_fs = get_fs(); + set_fs(KERNEL_DS); +- err = sock_getsockopt(sock, level, optname, (char *) &ktime, &len); ++ err = sock_getsockopt(sock, level, optname, (char __force_user *) &ktime, (int __force_user *)&len); + set_fs(old_fs); + + if (!err) { +@@ -576,7 +576,7 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname, + case MCAST_JOIN_GROUP: + case MCAST_LEAVE_GROUP: + { +- struct compat_group_req __user *gr32 = (void *)optval; ++ struct compat_group_req __user *gr32 = (void __user *)optval; + struct group_req __user *kgr = + compat_alloc_user_space(sizeof(struct group_req)); + u32 interface; +@@ -597,7 +597,7 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname, + case MCAST_BLOCK_SOURCE: + case MCAST_UNBLOCK_SOURCE: + { +- struct compat_group_source_req __user *gsr32 = (void *)optval; ++ struct compat_group_source_req __user *gsr32 = (void __user *)optval; + struct group_source_req __user *kgsr = compat_alloc_user_space( + sizeof(struct group_source_req)); + u32 interface; +@@ -618,7 +618,7 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname, + } + case MCAST_MSFILTER: + { +- struct compat_group_filter __user *gf32 = (void *)optval; ++ struct compat_group_filter __user *gf32 = (void __user *)optval; + struct group_filter __user *kgf; + u32 interface, fmode, numsrc; + +@@ -656,7 +656,7 @@ int compat_mc_getsockopt(struct sock *sock, int level, int optname, + char __user *optval, int __user *optlen, + int (*getsockopt)(struct sock *, int, int, char __user *, int __user *)) + { +- struct compat_group_filter __user *gf32 = (void *)optval; ++ struct compat_group_filter __user *gf32 = (void __user *)optval; + struct group_filter __user *kgf; + int __user *koptlen; + u32 interface, fmode, numsrc; +diff --git a/net/core/datagram.c b/net/core/datagram.c +index e4fbfd6..6a6ac94 100644 +--- a/net/core/datagram.c ++++ b/net/core/datagram.c +@@ -290,7 +290,7 @@ int skb_kill_datagram(struct sock *sk, struct sk_buff *skb, unsigned int flags) + } + + kfree_skb(skb); +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + sk_mem_reclaim_partial(sk); + + return err; +diff --git a/net/core/dev.c b/net/core/dev.c +index 533c586..f78a55f 100644 +--- a/net/core/dev.c ++++ b/net/core/dev.c +@@ -1136,9 +1136,13 @@ void dev_load(struct net *net, const char *name) + if (no_module && capable(CAP_NET_ADMIN)) + no_module = request_module("netdev-%s", name); + if (no_module && capable(CAP_SYS_MODULE)) { ++#ifdef CONFIG_GRKERNSEC_MODHARDEN ++ ___request_module(true, "grsec_modharden_netdev", "%s", name); ++#else + if (!request_module("%s", name)) + pr_err("Loading kernel module for a network device with CAP_SYS_MODULE (deprecated). Use CAP_NET_ADMIN and alias netdev-%s instead.\n", + name); ++#endif + } + } + EXPORT_SYMBOL(dev_load); +@@ -1602,7 +1606,7 @@ int dev_forward_skb(struct net_device *dev, struct sk_buff *skb) + { + if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) { + if (skb_copy_ubufs(skb, GFP_ATOMIC)) { +- atomic_long_inc(&dev->rx_dropped); ++ atomic_long_inc_unchecked(&dev->rx_dropped); + kfree_skb(skb); + return NET_RX_DROP; + } +@@ -1612,7 +1616,7 @@ int dev_forward_skb(struct net_device *dev, struct sk_buff *skb) + nf_reset(skb); + + if (unlikely(!is_skb_forwardable(dev, skb))) { +- atomic_long_inc(&dev->rx_dropped); ++ atomic_long_inc_unchecked(&dev->rx_dropped); + kfree_skb(skb); + return NET_RX_DROP; + } +@@ -2042,7 +2046,7 @@ static int illegal_highdma(struct net_device *dev, struct sk_buff *skb) + + struct dev_gso_cb { + void (*destructor)(struct sk_buff *skb); +-}; ++} __no_const; + + #define DEV_GSO_CB(skb) ((struct dev_gso_cb *)(skb)->cb) + +@@ -2877,7 +2881,7 @@ enqueue: + + local_irq_restore(flags); + +- atomic_long_inc(&skb->dev->rx_dropped); ++ atomic_long_inc_unchecked(&skb->dev->rx_dropped); + kfree_skb(skb); + return NET_RX_DROP; + } +@@ -2949,7 +2953,7 @@ int netif_rx_ni(struct sk_buff *skb) + } + EXPORT_SYMBOL(netif_rx_ni); + +-static void net_tx_action(struct softirq_action *h) ++static void net_tx_action(void) + { + struct softnet_data *sd = &__get_cpu_var(softnet_data); + +@@ -3237,7 +3241,7 @@ ncls: + if (pt_prev) { + ret = pt_prev->func(skb, skb->dev, pt_prev, orig_dev); + } else { +- atomic_long_inc(&skb->dev->rx_dropped); ++ atomic_long_inc_unchecked(&skb->dev->rx_dropped); + kfree_skb(skb); + /* Jamal, now you will not able to escape explaining + * me how you were going to use this. :-) +@@ -3797,7 +3801,7 @@ void netif_napi_del(struct napi_struct *napi) + } + EXPORT_SYMBOL(netif_napi_del); + +-static void net_rx_action(struct softirq_action *h) ++static void net_rx_action(void) + { + struct softnet_data *sd = &__get_cpu_var(softnet_data); + unsigned long time_limit = jiffies + 2; +@@ -4267,8 +4271,13 @@ static int ptype_seq_show(struct seq_file *seq, void *v) + else + seq_printf(seq, "%04x", ntohs(pt->type)); + ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ seq_printf(seq, " %-8s %p\n", ++ pt->dev ? pt->dev->name : "", NULL); ++#else + seq_printf(seq, " %-8s %pF\n", + pt->dev ? pt->dev->name : "", pt->func); ++#endif + } + + return 0; +@@ -5818,7 +5827,7 @@ struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, + } else { + netdev_stats_to_stats64(storage, &dev->stats); + } +- storage->rx_dropped += atomic_long_read(&dev->rx_dropped); ++ storage->rx_dropped += atomic_long_read_unchecked(&dev->rx_dropped); + return storage; + } + EXPORT_SYMBOL(dev_get_stats); +diff --git a/net/core/flow.c b/net/core/flow.c +index e318c7e..168b1d0 100644 +--- a/net/core/flow.c ++++ b/net/core/flow.c +@@ -61,7 +61,7 @@ struct flow_cache { + struct timer_list rnd_timer; + }; + +-atomic_t flow_cache_genid = ATOMIC_INIT(0); ++atomic_unchecked_t flow_cache_genid = ATOMIC_INIT(0); + EXPORT_SYMBOL(flow_cache_genid); + static struct flow_cache flow_cache_global; + static struct kmem_cache *flow_cachep __read_mostly; +@@ -86,7 +86,7 @@ static void flow_cache_new_hashrnd(unsigned long arg) + + static int flow_entry_valid(struct flow_cache_entry *fle) + { +- if (atomic_read(&flow_cache_genid) != fle->genid) ++ if (atomic_read_unchecked(&flow_cache_genid) != fle->genid) + return 0; + if (fle->object && !fle->object->ops->check(fle->object)) + return 0; +@@ -259,7 +259,7 @@ flow_cache_lookup(struct net *net, const struct flowi *key, u16 family, u8 dir, + hlist_add_head(&fle->u.hlist, &fcp->hash_table[hash]); + fcp->hash_count++; + } +- } else if (likely(fle->genid == atomic_read(&flow_cache_genid))) { ++ } else if (likely(fle->genid == atomic_read_unchecked(&flow_cache_genid))) { + flo = fle->object; + if (!flo) + goto ret_object; +@@ -280,7 +280,7 @@ nocache: + } + flo = resolver(net, key, family, dir, flo, ctx); + if (fle) { +- fle->genid = atomic_read(&flow_cache_genid); ++ fle->genid = atomic_read_unchecked(&flow_cache_genid); + if (!IS_ERR(flo)) + fle->object = flo; + else +diff --git a/net/core/iovec.c b/net/core/iovec.c +index 7e7aeb0..2a998cb 100644 +--- a/net/core/iovec.c ++++ b/net/core/iovec.c +@@ -42,7 +42,7 @@ int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr_storage *a + if (m->msg_namelen) { + if (mode == VERIFY_READ) { + void __user *namep; +- namep = (void __user __force *) m->msg_name; ++ namep = (void __force_user *) m->msg_name; + err = move_addr_to_kernel(namep, m->msg_namelen, + address); + if (err < 0) +@@ -54,7 +54,7 @@ int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr_storage *a + } + + size = m->msg_iovlen * sizeof(struct iovec); +- if (copy_from_user(iov, (void __user __force *) m->msg_iov, size)) ++ if (copy_from_user(iov, (void __force_user *) m->msg_iov, size)) + return -EFAULT; + + m->msg_iov = iov; +diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c +index 90430b7..0032ec0 100644 +--- a/net/core/rtnetlink.c ++++ b/net/core/rtnetlink.c +@@ -56,7 +56,7 @@ struct rtnl_link { + rtnl_doit_func doit; + rtnl_dumpit_func dumpit; + rtnl_calcit_func calcit; +-}; ++} __no_const; + + static DEFINE_MUTEX(rtnl_mutex); + +diff --git a/net/core/scm.c b/net/core/scm.c +index 611c5ef..88f6d6d 100644 +--- a/net/core/scm.c ++++ b/net/core/scm.c +@@ -219,7 +219,7 @@ EXPORT_SYMBOL(__scm_send); + int put_cmsg(struct msghdr * msg, int level, int type, int len, void *data) + { + struct cmsghdr __user *cm +- = (__force struct cmsghdr __user *)msg->msg_control; ++ = (struct cmsghdr __force_user *)msg->msg_control; + struct cmsghdr cmhdr; + int cmlen = CMSG_LEN(len); + int err; +@@ -242,7 +242,7 @@ int put_cmsg(struct msghdr * msg, int level, int type, int len, void *data) + err = -EFAULT; + if (copy_to_user(cm, &cmhdr, sizeof cmhdr)) + goto out; +- if (copy_to_user(CMSG_DATA(cm), data, cmlen - sizeof(struct cmsghdr))) ++ if (copy_to_user((void __force_user *)CMSG_DATA((void __force_kernel *)cm), data, cmlen - sizeof(struct cmsghdr))) + goto out; + cmlen = CMSG_SPACE(len); + if (msg->msg_controllen < cmlen) +@@ -258,7 +258,7 @@ EXPORT_SYMBOL(put_cmsg); + void scm_detach_fds(struct msghdr *msg, struct scm_cookie *scm) + { + struct cmsghdr __user *cm +- = (__force struct cmsghdr __user*)msg->msg_control; ++ = (struct cmsghdr __force_user *)msg->msg_control; + + int fdmax = 0; + int fdnum = scm->fp->count; +@@ -278,7 +278,7 @@ void scm_detach_fds(struct msghdr *msg, struct scm_cookie *scm) + if (fdnum < fdmax) + fdmax = fdnum; + +- for (i=0, cmfptr=(__force int __user *)CMSG_DATA(cm); i<fdmax; ++ for (i=0, cmfptr=(int __force_user *)CMSG_DATA((void __force_kernel *)cm); i<fdmax; + i++, cmfptr++) + { + int new_fd; +diff --git a/net/core/sock.c b/net/core/sock.c +index 0f8402e..f0b6338 100644 +--- a/net/core/sock.c ++++ b/net/core/sock.c +@@ -340,7 +340,7 @@ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) + struct sk_buff_head *list = &sk->sk_receive_queue; + + if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf) { +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + trace_sock_rcvqueue_full(sk, skb); + return -ENOMEM; + } +@@ -350,7 +350,7 @@ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) + return err; + + if (!sk_rmem_schedule(sk, skb->truesize)) { +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + return -ENOBUFS; + } + +@@ -370,7 +370,7 @@ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) + skb_dst_force(skb); + + spin_lock_irqsave(&list->lock, flags); +- skb->dropcount = atomic_read(&sk->sk_drops); ++ skb->dropcount = atomic_read_unchecked(&sk->sk_drops); + __skb_queue_tail(list, skb); + spin_unlock_irqrestore(&list->lock, flags); + +@@ -390,7 +390,7 @@ int sk_receive_skb(struct sock *sk, struct sk_buff *skb, const int nested) + skb->dev = NULL; + + if (sk_rcvqueues_full(sk, skb)) { +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + goto discard_and_relse; + } + if (nested) +@@ -408,7 +408,7 @@ int sk_receive_skb(struct sock *sk, struct sk_buff *skb, const int nested) + mutex_release(&sk->sk_lock.dep_map, 1, _RET_IP_); + } else if (sk_add_backlog(sk, skb)) { + bh_unlock_sock(sk); +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + goto discard_and_relse; + } + +@@ -984,7 +984,7 @@ int sock_getsockopt(struct socket *sock, int level, int optname, + if (len > sizeof(peercred)) + len = sizeof(peercred); + cred_to_ucred(sk->sk_peer_pid, sk->sk_peer_cred, &peercred); +- if (copy_to_user(optval, &peercred, len)) ++ if (len > sizeof(peercred) || copy_to_user(optval, &peercred, len)) + return -EFAULT; + goto lenout; + } +@@ -997,7 +997,7 @@ int sock_getsockopt(struct socket *sock, int level, int optname, + return -ENOTCONN; + if (lv < len) + return -EINVAL; +- if (copy_to_user(optval, address, len)) ++ if (len > sizeof(address) || copy_to_user(optval, address, len)) + return -EFAULT; + goto lenout; + } +@@ -1043,7 +1043,7 @@ int sock_getsockopt(struct socket *sock, int level, int optname, + + if (len > lv) + len = lv; +- if (copy_to_user(optval, &v, len)) ++ if (len > sizeof(v) || copy_to_user(optval, &v, len)) + return -EFAULT; + lenout: + if (put_user(len, optlen)) +@@ -2131,7 +2131,7 @@ void sock_init_data(struct socket *sock, struct sock *sk) + */ + smp_wmb(); + atomic_set(&sk->sk_refcnt, 1); +- atomic_set(&sk->sk_drops, 0); ++ atomic_set_unchecked(&sk->sk_drops, 0); + } + EXPORT_SYMBOL(sock_init_data); + +diff --git a/net/core/sock_diag.c b/net/core/sock_diag.c +index b9868e1..849f809 100644 +--- a/net/core/sock_diag.c ++++ b/net/core/sock_diag.c +@@ -16,20 +16,27 @@ static DEFINE_MUTEX(sock_diag_table_mutex); + + int sock_diag_check_cookie(void *sk, __u32 *cookie) + { ++#ifndef CONFIG_GRKERNSEC_HIDESYM + if ((cookie[0] != INET_DIAG_NOCOOKIE || + cookie[1] != INET_DIAG_NOCOOKIE) && + ((u32)(unsigned long)sk != cookie[0] || + (u32)((((unsigned long)sk) >> 31) >> 1) != cookie[1])) + return -ESTALE; + else ++#endif + return 0; + } + EXPORT_SYMBOL_GPL(sock_diag_check_cookie); + + void sock_diag_save_cookie(void *sk, __u32 *cookie) + { ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ cookie[0] = 0; ++ cookie[1] = 0; ++#else + cookie[0] = (u32)(unsigned long)sk; + cookie[1] = (u32)(((unsigned long)sk >> 31) >> 1); ++#endif + } + EXPORT_SYMBOL_GPL(sock_diag_save_cookie); + +diff --git a/net/decnet/sysctl_net_decnet.c b/net/decnet/sysctl_net_decnet.c +index 02e75d1..9a57a7c 100644 +--- a/net/decnet/sysctl_net_decnet.c ++++ b/net/decnet/sysctl_net_decnet.c +@@ -174,7 +174,7 @@ static int dn_node_address_handler(ctl_table *table, int write, + + if (len > *lenp) len = *lenp; + +- if (copy_to_user(buffer, addr, len)) ++ if (len > sizeof addr || copy_to_user(buffer, addr, len)) + return -EFAULT; + + *lenp = len; +@@ -237,7 +237,7 @@ static int dn_def_dev_handler(ctl_table *table, int write, + + if (len > *lenp) len = *lenp; + +- if (copy_to_user(buffer, devname, len)) ++ if (len > sizeof devname || copy_to_user(buffer, devname, len)) + return -EFAULT; + + *lenp = len; +diff --git a/net/econet/Kconfig b/net/econet/Kconfig +index 39a2d29..f39c0fe 100644 +--- a/net/econet/Kconfig ++++ b/net/econet/Kconfig +@@ -4,7 +4,7 @@ + + config ECONET + tristate "Acorn Econet/AUN protocols (EXPERIMENTAL)" +- depends on EXPERIMENTAL && INET ++ depends on EXPERIMENTAL && INET && BROKEN + ---help--- + Econet is a fairly old and slow networking protocol mainly used by + Acorn computers to access file and print servers. It uses native +diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c +index cbe3a68..a879b75 100644 +--- a/net/ipv4/fib_frontend.c ++++ b/net/ipv4/fib_frontend.c +@@ -969,12 +969,12 @@ static int fib_inetaddr_event(struct notifier_block *this, unsigned long event, + #ifdef CONFIG_IP_ROUTE_MULTIPATH + fib_sync_up(dev); + #endif +- atomic_inc(&net->ipv4.dev_addr_genid); ++ atomic_inc_unchecked(&net->ipv4.dev_addr_genid); + rt_cache_flush(dev_net(dev), -1); + break; + case NETDEV_DOWN: + fib_del_ifaddr(ifa, NULL); +- atomic_inc(&net->ipv4.dev_addr_genid); ++ atomic_inc_unchecked(&net->ipv4.dev_addr_genid); + if (ifa->ifa_dev->ifa_list == NULL) { + /* Last address was deleted from this interface. + * Disable IP. +@@ -1010,7 +1010,7 @@ static int fib_netdev_event(struct notifier_block *this, unsigned long event, vo + #ifdef CONFIG_IP_ROUTE_MULTIPATH + fib_sync_up(dev); + #endif +- atomic_inc(&net->ipv4.dev_addr_genid); ++ atomic_inc_unchecked(&net->ipv4.dev_addr_genid); + rt_cache_flush(dev_net(dev), -1); + break; + case NETDEV_DOWN: +diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c +index 8861f91..ab1e3c1 100644 +--- a/net/ipv4/fib_semantics.c ++++ b/net/ipv4/fib_semantics.c +@@ -698,7 +698,7 @@ __be32 fib_info_update_nh_saddr(struct net *net, struct fib_nh *nh) + nh->nh_saddr = inet_select_addr(nh->nh_dev, + nh->nh_gw, + nh->nh_parent->fib_scope); +- nh->nh_saddr_genid = atomic_read(&net->ipv4.dev_addr_genid); ++ nh->nh_saddr_genid = atomic_read_unchecked(&net->ipv4.dev_addr_genid); + + return nh->nh_saddr; + } +diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c +index 984ec65..97ac518 100644 +--- a/net/ipv4/inet_hashtables.c ++++ b/net/ipv4/inet_hashtables.c +@@ -18,12 +18,15 @@ + #include <linux/sched.h> + #include <linux/slab.h> + #include <linux/wait.h> ++#include <linux/security.h> + + #include <net/inet_connection_sock.h> + #include <net/inet_hashtables.h> + #include <net/secure_seq.h> + #include <net/ip.h> + ++extern void gr_update_task_in_ip_table(struct task_struct *task, const struct inet_sock *inet); ++ + /* + * Allocate and initialize a new local port bind bucket. + * The bindhash mutex for snum's hash chain must be held here. +@@ -530,6 +533,8 @@ ok: + twrefcnt += inet_twsk_bind_unhash(tw, hinfo); + spin_unlock(&head->lock); + ++ gr_update_task_in_ip_table(current, inet_sk(sk)); ++ + if (tw) { + inet_twsk_deschedule(tw, death_row); + while (twrefcnt) { +diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c +index dfba343..c827d50 100644 +--- a/net/ipv4/inetpeer.c ++++ b/net/ipv4/inetpeer.c +@@ -487,8 +487,8 @@ relookup: + if (p) { + p->daddr = *daddr; + atomic_set(&p->refcnt, 1); +- atomic_set(&p->rid, 0); +- atomic_set(&p->ip_id_count, ++ atomic_set_unchecked(&p->rid, 0); ++ atomic_set_unchecked(&p->ip_id_count, + (daddr->family == AF_INET) ? + secure_ip_id(daddr->addr.a4) : + secure_ipv6_id(daddr->addr.a6)); +diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c +index 3727e23..517f5df 100644 +--- a/net/ipv4/ip_fragment.c ++++ b/net/ipv4/ip_fragment.c +@@ -318,7 +318,7 @@ static inline int ip_frag_too_far(struct ipq *qp) + return 0; + + start = qp->rid; +- end = atomic_inc_return(&peer->rid); ++ end = atomic_inc_return_unchecked(&peer->rid); + qp->rid = end; + + rc = qp->q.fragments && (end - start) > max; +diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c +index 2fd0fba..83fac99 100644 +--- a/net/ipv4/ip_sockglue.c ++++ b/net/ipv4/ip_sockglue.c +@@ -1137,7 +1137,8 @@ static int do_ip_getsockopt(struct sock *sk, int level, int optname, + len = min_t(unsigned int, len, opt->optlen); + if (put_user(len, optlen)) + return -EFAULT; +- if (copy_to_user(optval, opt->__data, len)) ++ if ((len > (sizeof(optbuf) - sizeof(struct ip_options))) || ++ copy_to_user(optval, opt->__data, len)) + return -EFAULT; + return 0; + } +@@ -1268,7 +1269,7 @@ static int do_ip_getsockopt(struct sock *sk, int level, int optname, + if (sk->sk_type != SOCK_STREAM) + return -ENOPROTOOPT; + +- msg.msg_control = optval; ++ msg.msg_control = (void __force_kernel *)optval; + msg.msg_controllen = len; + msg.msg_flags = flags; + +diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c +index 92ac7e7..13f93d9 100644 +--- a/net/ipv4/ipconfig.c ++++ b/net/ipv4/ipconfig.c +@@ -321,7 +321,7 @@ static int __init ic_devinet_ioctl(unsigned int cmd, struct ifreq *arg) + + mm_segment_t oldfs = get_fs(); + set_fs(get_ds()); +- res = devinet_ioctl(&init_net, cmd, (struct ifreq __user *) arg); ++ res = devinet_ioctl(&init_net, cmd, (struct ifreq __force_user *) arg); + set_fs(oldfs); + return res; + } +@@ -332,7 +332,7 @@ static int __init ic_dev_ioctl(unsigned int cmd, struct ifreq *arg) + + mm_segment_t oldfs = get_fs(); + set_fs(get_ds()); +- res = dev_ioctl(&init_net, cmd, (struct ifreq __user *) arg); ++ res = dev_ioctl(&init_net, cmd, (struct ifreq __force_user *) arg); + set_fs(oldfs); + return res; + } +@@ -343,7 +343,7 @@ static int __init ic_route_ioctl(unsigned int cmd, struct rtentry *arg) + + mm_segment_t oldfs = get_fs(); + set_fs(get_ds()); +- res = ip_rt_ioctl(&init_net, cmd, (void __user *) arg); ++ res = ip_rt_ioctl(&init_net, cmd, (void __force_user *) arg); + set_fs(oldfs); + return res; + } +diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c +index 50009c7..5996a9f 100644 +--- a/net/ipv4/ping.c ++++ b/net/ipv4/ping.c +@@ -838,7 +838,7 @@ static void ping_format_sock(struct sock *sp, struct seq_file *f, + sk_rmem_alloc_get(sp), + 0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp), + atomic_read(&sp->sk_refcnt), sp, +- atomic_read(&sp->sk_drops), len); ++ atomic_read_unchecked(&sp->sk_drops), len); + } + + static int ping_seq_show(struct seq_file *seq, void *v) +diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c +index bbd604c..4d5469c 100644 +--- a/net/ipv4/raw.c ++++ b/net/ipv4/raw.c +@@ -304,7 +304,7 @@ static int raw_rcv_skb(struct sock * sk, struct sk_buff * skb) + int raw_rcv(struct sock *sk, struct sk_buff *skb) + { + if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) { +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + kfree_skb(skb); + return NET_RX_DROP; + } +@@ -740,16 +740,20 @@ static int raw_init(struct sock *sk) + + static int raw_seticmpfilter(struct sock *sk, char __user *optval, int optlen) + { ++ struct icmp_filter filter; ++ + if (optlen > sizeof(struct icmp_filter)) + optlen = sizeof(struct icmp_filter); +- if (copy_from_user(&raw_sk(sk)->filter, optval, optlen)) ++ if (copy_from_user(&filter, optval, optlen)) + return -EFAULT; ++ raw_sk(sk)->filter = filter; + return 0; + } + + static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *optlen) + { + int len, ret = -EFAULT; ++ struct icmp_filter filter; + + if (get_user(len, optlen)) + goto out; +@@ -759,8 +763,8 @@ static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *o + if (len > sizeof(struct icmp_filter)) + len = sizeof(struct icmp_filter); + ret = -EFAULT; +- if (put_user(len, optlen) || +- copy_to_user(optval, &raw_sk(sk)->filter, len)) ++ filter = raw_sk(sk)->filter; ++ if (put_user(len, optlen) || len > sizeof filter || copy_to_user(optval, &filter, len)) + goto out; + ret = 0; + out: return ret; +@@ -988,7 +992,13 @@ static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i) + sk_wmem_alloc_get(sp), + sk_rmem_alloc_get(sp), + 0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp), +- atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops)); ++ atomic_read(&sp->sk_refcnt), ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ NULL, ++#else ++ sp, ++#endif ++ atomic_read_unchecked(&sp->sk_drops)); + } + + static int raw_seq_show(struct seq_file *seq, void *v) +diff --git a/net/ipv4/route.c b/net/ipv4/route.c +index 167ea10..4b15883 100644 +--- a/net/ipv4/route.c ++++ b/net/ipv4/route.c +@@ -312,7 +312,7 @@ static inline unsigned int rt_hash(__be32 daddr, __be32 saddr, int idx, + + static inline int rt_genid(struct net *net) + { +- return atomic_read(&net->ipv4.rt_genid); ++ return atomic_read_unchecked(&net->ipv4.rt_genid); + } + + #ifdef CONFIG_PROC_FS +@@ -936,7 +936,7 @@ static void rt_cache_invalidate(struct net *net) + unsigned char shuffle; + + get_random_bytes(&shuffle, sizeof(shuffle)); +- atomic_add(shuffle + 1U, &net->ipv4.rt_genid); ++ atomic_add_unchecked(shuffle + 1U, &net->ipv4.rt_genid); + inetpeer_invalidate_tree(AF_INET); + } + +@@ -3009,7 +3009,7 @@ static int rt_fill_info(struct net *net, + error = rt->dst.error; + if (peer) { + inet_peer_refcheck(rt->peer); +- id = atomic_read(&peer->ip_id_count) & 0xffff; ++ id = atomic_read_unchecked(&peer->ip_id_count) & 0xffff; + if (peer->tcp_ts_stamp) { + ts = peer->tcp_ts; + tsage = get_seconds() - peer->tcp_ts_stamp; +diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c +index 0cb86ce..8e7fda8 100644 +--- a/net/ipv4/tcp_ipv4.c ++++ b/net/ipv4/tcp_ipv4.c +@@ -90,6 +90,10 @@ int sysctl_tcp_low_latency __read_mostly; + EXPORT_SYMBOL(sysctl_tcp_low_latency); + + ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++extern int grsec_enable_blackhole; ++#endif ++ + #ifdef CONFIG_TCP_MD5SIG + static int tcp_v4_md5_hash_hdr(char *md5_hash, const struct tcp_md5sig_key *key, + __be32 daddr, __be32 saddr, const struct tcphdr *th); +@@ -1641,6 +1645,9 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb) + return 0; + + reset: ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++ if (!grsec_enable_blackhole) ++#endif + tcp_v4_send_reset(rsk, skb); + discard: + kfree_skb(skb); +@@ -1703,12 +1710,19 @@ int tcp_v4_rcv(struct sk_buff *skb) + TCP_SKB_CB(skb)->sacked = 0; + + sk = __inet_lookup_skb(&tcp_hashinfo, skb, th->source, th->dest); +- if (!sk) ++ if (!sk) { ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++ ret = 1; ++#endif + goto no_tcp_socket; +- ++ } + process: +- if (sk->sk_state == TCP_TIME_WAIT) ++ if (sk->sk_state == TCP_TIME_WAIT) { ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++ ret = 2; ++#endif + goto do_time_wait; ++ } + + if (unlikely(iph->ttl < inet_sk(sk)->min_ttl)) { + NET_INC_STATS_BH(net, LINUX_MIB_TCPMINTTLDROP); +@@ -1758,6 +1772,10 @@ no_tcp_socket: + bad_packet: + TCP_INC_STATS_BH(net, TCP_MIB_INERRS); + } else { ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++ if (!grsec_enable_blackhole || (ret == 1 && ++ (skb->dev->flags & IFF_LOOPBACK))) ++#endif + tcp_v4_send_reset(NULL, skb); + } + +@@ -2419,7 +2437,11 @@ static void get_openreq4(const struct sock *sk, const struct request_sock *req, + 0, /* non standard timer */ + 0, /* open_requests have no inode */ + atomic_read(&sk->sk_refcnt), ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ NULL, ++#else + req, ++#endif + len); + } + +@@ -2469,7 +2491,12 @@ static void get_tcp4_sock(struct sock *sk, struct seq_file *f, int i, int *len) + sock_i_uid(sk), + icsk->icsk_probes_out, + sock_i_ino(sk), +- atomic_read(&sk->sk_refcnt), sk, ++ atomic_read(&sk->sk_refcnt), ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ NULL, ++#else ++ sk, ++#endif + jiffies_to_clock_t(icsk->icsk_rto), + jiffies_to_clock_t(icsk->icsk_ack.ato), + (icsk->icsk_ack.quick << 1) | icsk->icsk_ack.pingpong, +@@ -2497,7 +2524,13 @@ static void get_timewait4_sock(const struct inet_timewait_sock *tw, + " %02X %08X:%08X %02X:%08lX %08X %5d %8d %d %d %pK%n", + i, src, srcp, dest, destp, tw->tw_substate, 0, 0, + 3, jiffies_to_clock_t(ttd), 0, 0, 0, 0, +- atomic_read(&tw->tw_refcnt), tw, len); ++ atomic_read(&tw->tw_refcnt), ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ NULL, ++#else ++ tw, ++#endif ++ len); + } + + #define TMPSZ 150 +diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c +index 3cabafb..640525b 100644 +--- a/net/ipv4/tcp_minisocks.c ++++ b/net/ipv4/tcp_minisocks.c +@@ -27,6 +27,10 @@ + #include <net/inet_common.h> + #include <net/xfrm.h> + ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++extern int grsec_enable_blackhole; ++#endif ++ + int sysctl_tcp_syncookies __read_mostly = 1; + EXPORT_SYMBOL(sysctl_tcp_syncookies); + +@@ -753,6 +757,10 @@ listen_overflow: + + embryonic_reset: + NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_EMBRYONICRSTS); ++ ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++ if (!grsec_enable_blackhole) ++#endif + if (!(flg & TCP_FLAG_RST)) + req->rsk_ops->send_reset(sk, skb); + +diff --git a/net/ipv4/tcp_probe.c b/net/ipv4/tcp_probe.c +index a981cdc..48f4c3a 100644 +--- a/net/ipv4/tcp_probe.c ++++ b/net/ipv4/tcp_probe.c +@@ -204,7 +204,7 @@ static ssize_t tcpprobe_read(struct file *file, char __user *buf, + if (cnt + width >= len) + break; + +- if (copy_to_user(buf + cnt, tbuf, width)) ++ if (width > sizeof tbuf || copy_to_user(buf + cnt, tbuf, width)) + return -EFAULT; + cnt += width; + } +diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c +index 34d4a02..3b57f86 100644 +--- a/net/ipv4/tcp_timer.c ++++ b/net/ipv4/tcp_timer.c +@@ -22,6 +22,10 @@ + #include <linux/gfp.h> + #include <net/tcp.h> + ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++extern int grsec_lastack_retries; ++#endif ++ + int sysctl_tcp_syn_retries __read_mostly = TCP_SYN_RETRIES; + int sysctl_tcp_synack_retries __read_mostly = TCP_SYNACK_RETRIES; + int sysctl_tcp_keepalive_time __read_mostly = TCP_KEEPALIVE_TIME; +@@ -196,6 +200,13 @@ static int tcp_write_timeout(struct sock *sk) + } + } + ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++ if ((sk->sk_state == TCP_LAST_ACK) && ++ (grsec_lastack_retries > 0) && ++ (grsec_lastack_retries < retry_until)) ++ retry_until = grsec_lastack_retries; ++#endif ++ + if (retransmits_timed_out(sk, retry_until, + syn_set ? 0 : icsk->icsk_user_timeout, syn_set)) { + /* Has it gone just too far? */ +diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c +index fe14105..0618260 100644 +--- a/net/ipv4/udp.c ++++ b/net/ipv4/udp.c +@@ -87,6 +87,7 @@ + #include <linux/types.h> + #include <linux/fcntl.h> + #include <linux/module.h> ++#include <linux/security.h> + #include <linux/socket.h> + #include <linux/sockios.h> + #include <linux/igmp.h> +@@ -109,6 +110,10 @@ + #include <trace/events/udp.h> + #include "udp_impl.h" + ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++extern int grsec_enable_blackhole; ++#endif ++ + struct udp_table udp_table __read_mostly; + EXPORT_SYMBOL(udp_table); + +@@ -567,6 +572,9 @@ found: + return s; + } + ++extern int gr_search_udp_recvmsg(struct sock *sk, const struct sk_buff *skb); ++extern int gr_search_udp_sendmsg(struct sock *sk, struct sockaddr_in *addr); ++ + /* + * This routine is called by the ICMP module when it gets some + * sort of error condition. If err < 0 then the socket should +@@ -858,9 +866,18 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, + dport = usin->sin_port; + if (dport == 0) + return -EINVAL; ++ ++ err = gr_search_udp_sendmsg(sk, usin); ++ if (err) ++ return err; + } else { + if (sk->sk_state != TCP_ESTABLISHED) + return -EDESTADDRREQ; ++ ++ err = gr_search_udp_sendmsg(sk, NULL); ++ if (err) ++ return err; ++ + daddr = inet->inet_daddr; + dport = inet->inet_dport; + /* Open fast path for connected socket. +@@ -1102,7 +1119,7 @@ static unsigned int first_packet_length(struct sock *sk) + udp_lib_checksum_complete(skb)) { + UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS, + IS_UDPLITE(sk)); +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + __skb_unlink(skb, rcvq); + __skb_queue_tail(&list_kill, skb); + } +@@ -1188,6 +1205,10 @@ try_again: + if (!skb) + goto out; + ++ err = gr_search_udp_recvmsg(sk, skb); ++ if (err) ++ goto out_free; ++ + ulen = skb->len - sizeof(struct udphdr); + copied = len; + if (copied > ulen) +@@ -1489,7 +1510,7 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) + + drop: + UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS, is_udplite); +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + kfree_skb(skb); + return -1; + } +@@ -1508,7 +1529,7 @@ static void flush_stack(struct sock **stack, unsigned int count, + skb1 = (i == final) ? skb : skb_clone(skb, GFP_ATOMIC); + + if (!skb1) { +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_RCVBUFERRORS, + IS_UDPLITE(sk)); + UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS, +@@ -1677,6 +1698,9 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable, + goto csum_error; + + UDP_INC_STATS_BH(net, UDP_MIB_NOPORTS, proto == IPPROTO_UDPLITE); ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++ if (!grsec_enable_blackhole || (skb->dev->flags & IFF_LOOPBACK)) ++#endif + icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PORT_UNREACH, 0); + + /* +@@ -2094,8 +2118,13 @@ static void udp4_format_sock(struct sock *sp, struct seq_file *f, + sk_wmem_alloc_get(sp), + sk_rmem_alloc_get(sp), + 0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp), +- atomic_read(&sp->sk_refcnt), sp, +- atomic_read(&sp->sk_drops), len); ++ atomic_read(&sp->sk_refcnt), ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ NULL, ++#else ++ sp, ++#endif ++ atomic_read_unchecked(&sp->sk_drops), len); + } + + int udp4_seq_show(struct seq_file *seq, void *v) +diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c +index 7d5cb97..c56564f 100644 +--- a/net/ipv6/addrconf.c ++++ b/net/ipv6/addrconf.c +@@ -2142,7 +2142,7 @@ int addrconf_set_dstaddr(struct net *net, void __user *arg) + p.iph.ihl = 5; + p.iph.protocol = IPPROTO_IPV6; + p.iph.ttl = 64; +- ifr.ifr_ifru.ifru_data = (__force void __user *)&p; ++ ifr.ifr_ifru.ifru_data = (void __force_user *)&p; + + if (ops->ndo_do_ioctl) { + mm_segment_t oldfs = get_fs(); +diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c +index 02dd203..e03fcc9 100644 +--- a/net/ipv6/inet6_connection_sock.c ++++ b/net/ipv6/inet6_connection_sock.c +@@ -178,7 +178,7 @@ void __inet6_csk_dst_store(struct sock *sk, struct dst_entry *dst, + #ifdef CONFIG_XFRM + { + struct rt6_info *rt = (struct rt6_info *)dst; +- rt->rt6i_flow_cache_genid = atomic_read(&flow_cache_genid); ++ rt->rt6i_flow_cache_genid = atomic_read_unchecked(&flow_cache_genid); + } + #endif + } +@@ -193,7 +193,7 @@ struct dst_entry *__inet6_csk_dst_check(struct sock *sk, u32 cookie) + #ifdef CONFIG_XFRM + if (dst) { + struct rt6_info *rt = (struct rt6_info *)dst; +- if (rt->rt6i_flow_cache_genid != atomic_read(&flow_cache_genid)) { ++ if (rt->rt6i_flow_cache_genid != atomic_read_unchecked(&flow_cache_genid)) { + __sk_dst_reset(sk); + dst = NULL; + } +diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c +index 63dd1f8..e7f53ca 100644 +--- a/net/ipv6/ipv6_sockglue.c ++++ b/net/ipv6/ipv6_sockglue.c +@@ -990,7 +990,7 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname, + if (sk->sk_type != SOCK_STREAM) + return -ENOPROTOOPT; + +- msg.msg_control = optval; ++ msg.msg_control = (void __force_kernel *)optval; + msg.msg_controllen = len; + msg.msg_flags = flags; + +diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c +index 5bddea7..82d9d67 100644 +--- a/net/ipv6/raw.c ++++ b/net/ipv6/raw.c +@@ -377,7 +377,7 @@ static inline int rawv6_rcv_skb(struct sock *sk, struct sk_buff *skb) + { + if ((raw6_sk(sk)->checksum || rcu_access_pointer(sk->sk_filter)) && + skb_checksum_complete(skb)) { +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + kfree_skb(skb); + return NET_RX_DROP; + } +@@ -405,7 +405,7 @@ int rawv6_rcv(struct sock *sk, struct sk_buff *skb) + struct raw6_sock *rp = raw6_sk(sk); + + if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) { +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + kfree_skb(skb); + return NET_RX_DROP; + } +@@ -429,7 +429,7 @@ int rawv6_rcv(struct sock *sk, struct sk_buff *skb) + + if (inet->hdrincl) { + if (skb_checksum_complete(skb)) { +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + kfree_skb(skb); + return NET_RX_DROP; + } +@@ -602,7 +602,7 @@ out: + return err; + } + +-static int rawv6_send_hdrinc(struct sock *sk, void *from, int length, ++static int rawv6_send_hdrinc(struct sock *sk, void *from, unsigned int length, + struct flowi6 *fl6, struct dst_entry **dstp, + unsigned int flags) + { +@@ -914,12 +914,15 @@ do_confirm: + static int rawv6_seticmpfilter(struct sock *sk, int level, int optname, + char __user *optval, int optlen) + { ++ struct icmp6_filter filter; ++ + switch (optname) { + case ICMPV6_FILTER: + if (optlen > sizeof(struct icmp6_filter)) + optlen = sizeof(struct icmp6_filter); +- if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen)) ++ if (copy_from_user(&filter, optval, optlen)) + return -EFAULT; ++ raw6_sk(sk)->filter = filter; + return 0; + default: + return -ENOPROTOOPT; +@@ -932,6 +935,7 @@ static int rawv6_geticmpfilter(struct sock *sk, int level, int optname, + char __user *optval, int __user *optlen) + { + int len; ++ struct icmp6_filter filter; + + switch (optname) { + case ICMPV6_FILTER: +@@ -943,7 +947,8 @@ static int rawv6_geticmpfilter(struct sock *sk, int level, int optname, + len = sizeof(struct icmp6_filter); + if (put_user(len, optlen)) + return -EFAULT; +- if (copy_to_user(optval, &raw6_sk(sk)->filter, len)) ++ filter = raw6_sk(sk)->filter; ++ if (len > sizeof filter || copy_to_user(optval, &filter, len)) + return -EFAULT; + return 0; + default: +@@ -1250,7 +1255,13 @@ static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i) + 0, 0L, 0, + sock_i_uid(sp), 0, + sock_i_ino(sp), +- atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops)); ++ atomic_read(&sp->sk_refcnt), ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ NULL, ++#else ++ sp, ++#endif ++ atomic_read_unchecked(&sp->sk_drops)); + } + + static int raw6_seq_show(struct seq_file *seq, void *v) +diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c +index 98256cf..7f16dbd 100644 +--- a/net/ipv6/tcp_ipv6.c ++++ b/net/ipv6/tcp_ipv6.c +@@ -94,6 +94,10 @@ static struct tcp_md5sig_key *tcp_v6_md5_do_lookup(struct sock *sk, + } + #endif + ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++extern int grsec_enable_blackhole; ++#endif ++ + static void tcp_v6_hash(struct sock *sk) + { + if (sk->sk_state != TCP_CLOSE) { +@@ -1542,6 +1546,9 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb) + return 0; + + reset: ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++ if (!grsec_enable_blackhole) ++#endif + tcp_v6_send_reset(sk, skb); + discard: + if (opt_skb) +@@ -1623,12 +1630,20 @@ static int tcp_v6_rcv(struct sk_buff *skb) + TCP_SKB_CB(skb)->sacked = 0; + + sk = __inet6_lookup_skb(&tcp_hashinfo, skb, th->source, th->dest); +- if (!sk) ++ if (!sk) { ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++ ret = 1; ++#endif + goto no_tcp_socket; ++ } + + process: +- if (sk->sk_state == TCP_TIME_WAIT) ++ if (sk->sk_state == TCP_TIME_WAIT) { ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++ ret = 2; ++#endif + goto do_time_wait; ++ } + + if (hdr->hop_limit < inet6_sk(sk)->min_hopcount) { + NET_INC_STATS_BH(net, LINUX_MIB_TCPMINTTLDROP); +@@ -1676,6 +1691,10 @@ no_tcp_socket: + bad_packet: + TCP_INC_STATS_BH(net, TCP_MIB_INERRS); + } else { ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++ if (!grsec_enable_blackhole || (ret == 1 && ++ (skb->dev->flags & IFF_LOOPBACK))) ++#endif + tcp_v6_send_reset(NULL, skb); + } + +@@ -1930,7 +1949,13 @@ static void get_openreq6(struct seq_file *seq, + uid, + 0, /* non standard timer */ + 0, /* open_requests have no inode */ +- 0, req); ++ 0, ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ NULL ++#else ++ req ++#endif ++ ); + } + + static void get_tcp6_sock(struct seq_file *seq, struct sock *sp, int i) +@@ -1980,7 +2005,12 @@ static void get_tcp6_sock(struct seq_file *seq, struct sock *sp, int i) + sock_i_uid(sp), + icsk->icsk_probes_out, + sock_i_ino(sp), +- atomic_read(&sp->sk_refcnt), sp, ++ atomic_read(&sp->sk_refcnt), ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ NULL, ++#else ++ sp, ++#endif + jiffies_to_clock_t(icsk->icsk_rto), + jiffies_to_clock_t(icsk->icsk_ack.ato), + (icsk->icsk_ack.quick << 1 ) | icsk->icsk_ack.pingpong, +@@ -2015,7 +2045,13 @@ static void get_timewait6_sock(struct seq_file *seq, + dest->s6_addr32[2], dest->s6_addr32[3], destp, + tw->tw_substate, 0, 0, + 3, jiffies_to_clock_t(ttd), 0, 0, 0, 0, +- atomic_read(&tw->tw_refcnt), tw); ++ atomic_read(&tw->tw_refcnt), ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ NULL ++#else ++ tw ++#endif ++ ); + } + + static int tcp6_seq_show(struct seq_file *seq, void *v) +diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c +index 37b0699..d323408 100644 +--- a/net/ipv6/udp.c ++++ b/net/ipv6/udp.c +@@ -50,6 +50,10 @@ + #include <linux/seq_file.h> + #include "udp_impl.h" + ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++extern int grsec_enable_blackhole; ++#endif ++ + int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2) + { + const struct in6_addr *sk_rcv_saddr6 = &inet6_sk(sk)->rcv_saddr; +@@ -551,7 +555,7 @@ int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb) + + return 0; + drop: +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + drop_no_sk_drops_inc: + UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS, is_udplite); + kfree_skb(skb); +@@ -627,7 +631,7 @@ static void flush_stack(struct sock **stack, unsigned int count, + continue; + } + drop: +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + UDP6_INC_STATS_BH(sock_net(sk), + UDP_MIB_RCVBUFERRORS, IS_UDPLITE(sk)); + UDP6_INC_STATS_BH(sock_net(sk), +@@ -782,6 +786,9 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct udp_table *udptable, + UDP6_INC_STATS_BH(net, UDP_MIB_NOPORTS, + proto == IPPROTO_UDPLITE); + ++#ifdef CONFIG_GRKERNSEC_BLACKHOLE ++ if (!grsec_enable_blackhole || (skb->dev->flags & IFF_LOOPBACK)) ++#endif + icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_PORT_UNREACH, 0); + + kfree_skb(skb); +@@ -798,7 +805,7 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct udp_table *udptable, + if (!sock_owned_by_user(sk)) + udpv6_queue_rcv_skb(sk, skb); + else if (sk_add_backlog(sk, skb)) { +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + bh_unlock_sock(sk); + sock_put(sk); + goto discard; +@@ -1411,8 +1418,13 @@ static void udp6_sock_seq_show(struct seq_file *seq, struct sock *sp, int bucket + 0, 0L, 0, + sock_i_uid(sp), 0, + sock_i_ino(sp), +- atomic_read(&sp->sk_refcnt), sp, +- atomic_read(&sp->sk_drops)); ++ atomic_read(&sp->sk_refcnt), ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ NULL, ++#else ++ sp, ++#endif ++ atomic_read_unchecked(&sp->sk_drops)); + } + + int udp6_seq_show(struct seq_file *seq, void *v) +diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c +index 6b9d5a0..4dffaf1 100644 +--- a/net/irda/ircomm/ircomm_tty.c ++++ b/net/irda/ircomm/ircomm_tty.c +@@ -281,16 +281,16 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self, + add_wait_queue(&self->open_wait, &wait); + + IRDA_DEBUG(2, "%s(%d):block_til_ready before block on %s open_count=%d\n", +- __FILE__,__LINE__, tty->driver->name, self->open_count ); ++ __FILE__,__LINE__, tty->driver->name, local_read(&self->open_count) ); + + /* As far as I can see, we protect open_count - Jean II */ + spin_lock_irqsave(&self->spinlock, flags); + if (!tty_hung_up_p(filp)) { + extra_count = 1; +- self->open_count--; ++ local_dec(&self->open_count); + } + spin_unlock_irqrestore(&self->spinlock, flags); +- self->blocked_open++; ++ local_inc(&self->blocked_open); + + while (1) { + if (tty->termios->c_cflag & CBAUD) { +@@ -330,7 +330,7 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self, + } + + IRDA_DEBUG(1, "%s(%d):block_til_ready blocking on %s open_count=%d\n", +- __FILE__,__LINE__, tty->driver->name, self->open_count ); ++ __FILE__,__LINE__, tty->driver->name, local_read(&self->open_count) ); + + schedule(); + } +@@ -341,13 +341,13 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self, + if (extra_count) { + /* ++ is not atomic, so this should be protected - Jean II */ + spin_lock_irqsave(&self->spinlock, flags); +- self->open_count++; ++ local_inc(&self->open_count); + spin_unlock_irqrestore(&self->spinlock, flags); + } +- self->blocked_open--; ++ local_dec(&self->blocked_open); + + IRDA_DEBUG(1, "%s(%d):block_til_ready after blocking on %s open_count=%d\n", +- __FILE__,__LINE__, tty->driver->name, self->open_count); ++ __FILE__,__LINE__, tty->driver->name, local_read(&self->open_count)); + + if (!retval) + self->flags |= ASYNC_NORMAL_ACTIVE; +@@ -412,14 +412,14 @@ static int ircomm_tty_open(struct tty_struct *tty, struct file *filp) + } + /* ++ is not atomic, so this should be protected - Jean II */ + spin_lock_irqsave(&self->spinlock, flags); +- self->open_count++; ++ local_inc(&self->open_count); + + tty->driver_data = self; + self->tty = tty; + spin_unlock_irqrestore(&self->spinlock, flags); + + IRDA_DEBUG(1, "%s(), %s%d, count = %d\n", __func__ , tty->driver->name, +- self->line, self->open_count); ++ self->line, local_read(&self->open_count)); + + /* Not really used by us, but lets do it anyway */ + self->tty->low_latency = (self->flags & ASYNC_LOW_LATENCY) ? 1 : 0; +@@ -505,7 +505,7 @@ static void ircomm_tty_close(struct tty_struct *tty, struct file *filp) + return; + } + +- if ((tty->count == 1) && (self->open_count != 1)) { ++ if ((tty->count == 1) && (local_read(&self->open_count) != 1)) { + /* + * Uh, oh. tty->count is 1, which means that the tty + * structure will be freed. state->count should always +@@ -515,16 +515,16 @@ static void ircomm_tty_close(struct tty_struct *tty, struct file *filp) + */ + IRDA_DEBUG(0, "%s(), bad serial port count; " + "tty->count is 1, state->count is %d\n", __func__ , +- self->open_count); +- self->open_count = 1; ++ local_read(&self->open_count)); ++ local_set(&self->open_count, 1); + } + +- if (--self->open_count < 0) { ++ if (local_dec_return(&self->open_count) < 0) { + IRDA_ERROR("%s(), bad serial port count for ttys%d: %d\n", +- __func__, self->line, self->open_count); +- self->open_count = 0; ++ __func__, self->line, local_read(&self->open_count)); ++ local_set(&self->open_count, 0); + } +- if (self->open_count) { ++ if (local_read(&self->open_count)) { + spin_unlock_irqrestore(&self->spinlock, flags); + + IRDA_DEBUG(0, "%s(), open count > 0\n", __func__ ); +@@ -556,7 +556,7 @@ static void ircomm_tty_close(struct tty_struct *tty, struct file *filp) + tty->closing = 0; + self->tty = NULL; + +- if (self->blocked_open) { ++ if (local_read(&self->blocked_open)) { + if (self->close_delay) + schedule_timeout_interruptible(self->close_delay); + wake_up_interruptible(&self->open_wait); +@@ -1008,7 +1008,7 @@ static void ircomm_tty_hangup(struct tty_struct *tty) + spin_lock_irqsave(&self->spinlock, flags); + self->flags &= ~ASYNC_NORMAL_ACTIVE; + self->tty = NULL; +- self->open_count = 0; ++ local_set(&self->open_count, 0); + spin_unlock_irqrestore(&self->spinlock, flags); + + wake_up_interruptible(&self->open_wait); +@@ -1355,7 +1355,7 @@ static void ircomm_tty_line_info(struct ircomm_tty_cb *self, struct seq_file *m) + seq_putc(m, '\n'); + + seq_printf(m, "Role: %s\n", self->client ? "client" : "server"); +- seq_printf(m, "Open count: %d\n", self->open_count); ++ seq_printf(m, "Open count: %d\n", local_read(&self->open_count)); + seq_printf(m, "Max data size: %d\n", self->max_data_size); + seq_printf(m, "Max header size: %d\n", self->max_header_size); + +diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c +index cd6f7a9..e63fe89 100644 +--- a/net/iucv/af_iucv.c ++++ b/net/iucv/af_iucv.c +@@ -782,10 +782,10 @@ static int iucv_sock_autobind(struct sock *sk) + + write_lock_bh(&iucv_sk_list.lock); + +- sprintf(name, "%08x", atomic_inc_return(&iucv_sk_list.autobind_name)); ++ sprintf(name, "%08x", atomic_inc_return_unchecked(&iucv_sk_list.autobind_name)); + while (__iucv_get_sock_by_name(name)) { + sprintf(name, "%08x", +- atomic_inc_return(&iucv_sk_list.autobind_name)); ++ atomic_inc_return_unchecked(&iucv_sk_list.autobind_name)); + } + + write_unlock_bh(&iucv_sk_list.lock); +diff --git a/net/key/af_key.c b/net/key/af_key.c +index 7e5d927..cdbb54e 100644 +--- a/net/key/af_key.c ++++ b/net/key/af_key.c +@@ -3016,10 +3016,10 @@ static int pfkey_send_policy_notify(struct xfrm_policy *xp, int dir, const struc + static u32 get_acqseq(void) + { + u32 res; +- static atomic_t acqseq; ++ static atomic_unchecked_t acqseq; + + do { +- res = atomic_inc_return(&acqseq); ++ res = atomic_inc_return_unchecked(&acqseq); + } while (!res); + return res; + } +diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h +index db8fae5..ff070cd 100644 +--- a/net/mac80211/ieee80211_i.h ++++ b/net/mac80211/ieee80211_i.h +@@ -28,6 +28,7 @@ + #include <net/ieee80211_radiotap.h> + #include <net/cfg80211.h> + #include <net/mac80211.h> ++#include <asm/local.h> + #include "key.h" + #include "sta_info.h" + +@@ -842,7 +843,7 @@ struct ieee80211_local { + /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ + spinlock_t queue_stop_reason_lock; + +- int open_count; ++ local_t open_count; + int monitors, cooked_mntrs; + /* number of interfaces with corresponding FIF_ flags */ + int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, +diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c +index 48f937e..4ccd7b8 100644 +--- a/net/mac80211/iface.c ++++ b/net/mac80211/iface.c +@@ -222,7 +222,7 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up) + break; + } + +- if (local->open_count == 0) { ++ if (local_read(&local->open_count) == 0) { + res = drv_start(local); + if (res) + goto err_del_bss; +@@ -246,7 +246,7 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up) + memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); + + if (!is_valid_ether_addr(dev->dev_addr)) { +- if (!local->open_count) ++ if (!local_read(&local->open_count)) + drv_stop(local); + return -EADDRNOTAVAIL; + } +@@ -347,7 +347,7 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up) + mutex_unlock(&local->mtx); + + if (coming_up) +- local->open_count++; ++ local_inc(&local->open_count); + + if (hw_reconf_flags) + ieee80211_hw_config(local, hw_reconf_flags); +@@ -360,7 +360,7 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up) + err_del_interface: + drv_remove_interface(local, sdata); + err_stop: +- if (!local->open_count) ++ if (!local_read(&local->open_count)) + drv_stop(local); + err_del_bss: + sdata->bss = NULL; +@@ -491,7 +491,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, + } + + if (going_down) +- local->open_count--; ++ local_dec(&local->open_count); + + switch (sdata->vif.type) { + case NL80211_IFTYPE_AP_VLAN: +@@ -562,7 +562,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, + + ieee80211_recalc_ps(local, -1); + +- if (local->open_count == 0) { ++ if (local_read(&local->open_count) == 0) { + if (local->ops->napi_poll) + napi_disable(&local->napi); + ieee80211_clear_tx_pending(local); +diff --git a/net/mac80211/main.c b/net/mac80211/main.c +index 1633648..d45ebfa 100644 +--- a/net/mac80211/main.c ++++ b/net/mac80211/main.c +@@ -164,7 +164,7 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) + local->hw.conf.power_level = power; + } + +- if (changed && local->open_count) { ++ if (changed && local_read(&local->open_count)) { + ret = drv_config(local, changed); + /* + * Goal: +diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c +index ef8eba1..5c63952 100644 +--- a/net/mac80211/pm.c ++++ b/net/mac80211/pm.c +@@ -34,7 +34,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) + struct ieee80211_sub_if_data *sdata; + struct sta_info *sta; + +- if (!local->open_count) ++ if (!local_read(&local->open_count)) + goto suspend; + + ieee80211_scan_cancel(local); +@@ -72,7 +72,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) + cancel_work_sync(&local->dynamic_ps_enable_work); + del_timer_sync(&local->dynamic_ps_timer); + +- local->wowlan = wowlan && local->open_count; ++ local->wowlan = wowlan && local_read(&local->open_count); + if (local->wowlan) { + int err = drv_suspend(local, wowlan); + if (err < 0) { +@@ -128,7 +128,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) + } + + /* stop hardware - this must stop RX */ +- if (local->open_count) ++ if (local_read(&local->open_count)) + ieee80211_stop_device(local); + + suspend: +diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c +index 3313c11..bec9f17 100644 +--- a/net/mac80211/rate.c ++++ b/net/mac80211/rate.c +@@ -494,7 +494,7 @@ int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, + + ASSERT_RTNL(); + +- if (local->open_count) ++ if (local_read(&local->open_count)) + return -EBUSY; + + if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { +diff --git a/net/mac80211/rc80211_pid_debugfs.c b/net/mac80211/rc80211_pid_debugfs.c +index c97a065..ff61928 100644 +--- a/net/mac80211/rc80211_pid_debugfs.c ++++ b/net/mac80211/rc80211_pid_debugfs.c +@@ -193,7 +193,7 @@ static ssize_t rate_control_pid_events_read(struct file *file, char __user *buf, + + spin_unlock_irqrestore(&events->lock, status); + +- if (copy_to_user(buf, pb, p)) ++ if (p > sizeof(pb) || copy_to_user(buf, pb, p)) + return -EFAULT; + + return p; +diff --git a/net/mac80211/util.c b/net/mac80211/util.c +index eb9d7c0..d34b832 100644 +--- a/net/mac80211/util.c ++++ b/net/mac80211/util.c +@@ -1179,7 +1179,7 @@ int ieee80211_reconfig(struct ieee80211_local *local) + } + #endif + /* everything else happens only if HW was up & running */ +- if (!local->open_count) ++ if (!local_read(&local->open_count)) + goto wake_up; + + /* +diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig +index 0c6f67e..d02cdfc 100644 +--- a/net/netfilter/Kconfig ++++ b/net/netfilter/Kconfig +@@ -836,6 +836,16 @@ config NETFILTER_XT_MATCH_ESP + + To compile it as a module, choose M here. If unsure, say N. + ++config NETFILTER_XT_MATCH_GRADM ++ tristate '"gradm" match support' ++ depends on NETFILTER_XTABLES && NETFILTER_ADVANCED ++ depends on GRKERNSEC && !GRKERNSEC_NO_RBAC ++ ---help--- ++ The gradm match allows to match on grsecurity RBAC being enabled. ++ It is useful when iptables rules are applied early on bootup to ++ prevent connections to the machine (except from a trusted host) ++ while the RBAC system is disabled. ++ + config NETFILTER_XT_MATCH_HASHLIMIT + tristate '"hashlimit" match support' + depends on (IP6_NF_IPTABLES || IP6_NF_IPTABLES=n) +diff --git a/net/netfilter/Makefile b/net/netfilter/Makefile +index ca36765..0882e7c 100644 +--- a/net/netfilter/Makefile ++++ b/net/netfilter/Makefile +@@ -86,6 +86,7 @@ obj-$(CONFIG_NETFILTER_XT_MATCH_DEVGROUP) += xt_devgroup.o + obj-$(CONFIG_NETFILTER_XT_MATCH_DSCP) += xt_dscp.o + obj-$(CONFIG_NETFILTER_XT_MATCH_ECN) += xt_ecn.o + obj-$(CONFIG_NETFILTER_XT_MATCH_ESP) += xt_esp.o ++obj-$(CONFIG_NETFILTER_XT_MATCH_GRADM) += xt_gradm.o + obj-$(CONFIG_NETFILTER_XT_MATCH_HASHLIMIT) += xt_hashlimit.o + obj-$(CONFIG_NETFILTER_XT_MATCH_HELPER) += xt_helper.o + obj-$(CONFIG_NETFILTER_XT_MATCH_HL) += xt_hl.o +diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c +index 29fa5ba..8debc79 100644 +--- a/net/netfilter/ipvs/ip_vs_conn.c ++++ b/net/netfilter/ipvs/ip_vs_conn.c +@@ -556,7 +556,7 @@ ip_vs_bind_dest(struct ip_vs_conn *cp, struct ip_vs_dest *dest) + /* Increase the refcnt counter of the dest */ + atomic_inc(&dest->refcnt); + +- conn_flags = atomic_read(&dest->conn_flags); ++ conn_flags = atomic_read_unchecked(&dest->conn_flags); + if (cp->protocol != IPPROTO_UDP) + conn_flags &= ~IP_VS_CONN_F_ONE_PACKET; + /* Bind with the destination and its corresponding transmitter */ +@@ -869,7 +869,7 @@ ip_vs_conn_new(const struct ip_vs_conn_param *p, + atomic_set(&cp->refcnt, 1); + + atomic_set(&cp->n_control, 0); +- atomic_set(&cp->in_pkts, 0); ++ atomic_set_unchecked(&cp->in_pkts, 0); + + atomic_inc(&ipvs->conn_count); + if (flags & IP_VS_CONN_F_NO_CPORT) +@@ -1149,7 +1149,7 @@ static inline int todrop_entry(struct ip_vs_conn *cp) + + /* Don't drop the entry if its number of incoming packets is not + located in [0, 8] */ +- i = atomic_read(&cp->in_pkts); ++ i = atomic_read_unchecked(&cp->in_pkts); + if (i > 8 || i < 0) return 0; + + if (!todrop_rate[i]) return 0; +diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c +index 00bdb1d..6725a48 100644 +--- a/net/netfilter/ipvs/ip_vs_core.c ++++ b/net/netfilter/ipvs/ip_vs_core.c +@@ -562,7 +562,7 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb, + ret = cp->packet_xmit(skb, cp, pd->pp); + /* do not touch skb anymore */ + +- atomic_inc(&cp->in_pkts); ++ atomic_inc_unchecked(&cp->in_pkts); + ip_vs_conn_put(cp); + return ret; + } +@@ -1611,7 +1611,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af) + if (cp->flags & IP_VS_CONN_F_ONE_PACKET) + pkts = sysctl_sync_threshold(ipvs); + else +- pkts = atomic_add_return(1, &cp->in_pkts); ++ pkts = atomic_add_return_unchecked(1, &cp->in_pkts); + + if ((ipvs->sync_state & IP_VS_STATE_MASTER) && + cp->protocol == IPPROTO_SCTP) { +diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c +index f558998..9cdff60 100644 +--- a/net/netfilter/ipvs/ip_vs_ctl.c ++++ b/net/netfilter/ipvs/ip_vs_ctl.c +@@ -788,7 +788,7 @@ __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest, + ip_vs_rs_hash(ipvs, dest); + write_unlock_bh(&ipvs->rs_lock); + } +- atomic_set(&dest->conn_flags, conn_flags); ++ atomic_set_unchecked(&dest->conn_flags, conn_flags); + + /* bind the service */ + if (!dest->svc) { +@@ -2028,7 +2028,7 @@ static int ip_vs_info_seq_show(struct seq_file *seq, void *v) + " %-7s %-6d %-10d %-10d\n", + &dest->addr.in6, + ntohs(dest->port), +- ip_vs_fwd_name(atomic_read(&dest->conn_flags)), ++ ip_vs_fwd_name(atomic_read_unchecked(&dest->conn_flags)), + atomic_read(&dest->weight), + atomic_read(&dest->activeconns), + atomic_read(&dest->inactconns)); +@@ -2039,7 +2039,7 @@ static int ip_vs_info_seq_show(struct seq_file *seq, void *v) + "%-7s %-6d %-10d %-10d\n", + ntohl(dest->addr.ip), + ntohs(dest->port), +- ip_vs_fwd_name(atomic_read(&dest->conn_flags)), ++ ip_vs_fwd_name(atomic_read_unchecked(&dest->conn_flags)), + atomic_read(&dest->weight), + atomic_read(&dest->activeconns), + atomic_read(&dest->inactconns)); +@@ -2509,7 +2509,7 @@ __ip_vs_get_dest_entries(struct net *net, const struct ip_vs_get_dests *get, + + entry.addr = dest->addr.ip; + entry.port = dest->port; +- entry.conn_flags = atomic_read(&dest->conn_flags); ++ entry.conn_flags = atomic_read_unchecked(&dest->conn_flags); + entry.weight = atomic_read(&dest->weight); + entry.u_threshold = dest->u_threshold; + entry.l_threshold = dest->l_threshold; +@@ -3042,7 +3042,7 @@ static int ip_vs_genl_fill_dest(struct sk_buff *skb, struct ip_vs_dest *dest) + NLA_PUT_U16(skb, IPVS_DEST_ATTR_PORT, dest->port); + + NLA_PUT_U32(skb, IPVS_DEST_ATTR_FWD_METHOD, +- atomic_read(&dest->conn_flags) & IP_VS_CONN_F_FWD_MASK); ++ atomic_read_unchecked(&dest->conn_flags) & IP_VS_CONN_F_FWD_MASK); + NLA_PUT_U32(skb, IPVS_DEST_ATTR_WEIGHT, atomic_read(&dest->weight)); + NLA_PUT_U32(skb, IPVS_DEST_ATTR_U_THRESH, dest->u_threshold); + NLA_PUT_U32(skb, IPVS_DEST_ATTR_L_THRESH, dest->l_threshold); +diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c +index 8a0d6d6..90ec197 100644 +--- a/net/netfilter/ipvs/ip_vs_sync.c ++++ b/net/netfilter/ipvs/ip_vs_sync.c +@@ -649,7 +649,7 @@ control: + * i.e only increment in_pkts for Templates. + */ + if (cp->flags & IP_VS_CONN_F_TEMPLATE) { +- int pkts = atomic_add_return(1, &cp->in_pkts); ++ int pkts = atomic_add_return_unchecked(1, &cp->in_pkts); + + if (pkts % sysctl_sync_period(ipvs) != 1) + return; +@@ -795,7 +795,7 @@ static void ip_vs_proc_conn(struct net *net, struct ip_vs_conn_param *param, + + if (opt) + memcpy(&cp->in_seq, opt, sizeof(*opt)); +- atomic_set(&cp->in_pkts, sysctl_sync_threshold(ipvs)); ++ atomic_set_unchecked(&cp->in_pkts, sysctl_sync_threshold(ipvs)); + cp->state = state; + cp->old_state = cp->state; + /* +diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c +index 7fd66de..e6fb361 100644 +--- a/net/netfilter/ipvs/ip_vs_xmit.c ++++ b/net/netfilter/ipvs/ip_vs_xmit.c +@@ -1151,7 +1151,7 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, + else + rc = NF_ACCEPT; + /* do not touch skb anymore */ +- atomic_inc(&cp->in_pkts); ++ atomic_inc_unchecked(&cp->in_pkts); + goto out; + } + +@@ -1272,7 +1272,7 @@ ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, + else + rc = NF_ACCEPT; + /* do not touch skb anymore */ +- atomic_inc(&cp->in_pkts); ++ atomic_inc_unchecked(&cp->in_pkts); + goto out; + } + +diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c +index 66b2c54..c7884e3 100644 +--- a/net/netfilter/nfnetlink_log.c ++++ b/net/netfilter/nfnetlink_log.c +@@ -70,7 +70,7 @@ struct nfulnl_instance { + }; + + static DEFINE_SPINLOCK(instances_lock); +-static atomic_t global_seq; ++static atomic_unchecked_t global_seq; + + #define INSTANCE_BUCKETS 16 + static struct hlist_head instance_table[INSTANCE_BUCKETS]; +@@ -502,7 +502,7 @@ __build_packet_message(struct nfulnl_instance *inst, + /* global sequence number */ + if (inst->flags & NFULNL_CFG_F_SEQ_GLOBAL) + NLA_PUT_BE32(inst->skb, NFULA_SEQ_GLOBAL, +- htonl(atomic_inc_return(&global_seq))); ++ htonl(atomic_inc_return_unchecked(&global_seq))); + + if (data_len) { + struct nlattr *nla; +diff --git a/net/netfilter/xt_gradm.c b/net/netfilter/xt_gradm.c +new file mode 100644 +index 0000000..6905327 +--- /dev/null ++++ b/net/netfilter/xt_gradm.c +@@ -0,0 +1,51 @@ ++/* ++ * gradm match for netfilter ++ * Copyright © Zbigniew Krzystolik, 2010 ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License; either version ++ * 2 or 3 as published by the Free Software Foundation. ++ */ ++#include <linux/module.h> ++#include <linux/moduleparam.h> ++#include <linux/skbuff.h> ++#include <linux/netfilter/x_tables.h> ++#include <linux/grsecurity.h> ++#include <linux/netfilter/xt_gradm.h> ++ ++static bool ++gradm_mt(const struct sk_buff *skb, struct xt_action_param *par) ++{ ++ const struct xt_gradm_mtinfo *info = par->matchinfo; ++ bool retval = false; ++ if (gr_acl_is_enabled()) ++ retval = true; ++ return retval ^ info->invflags; ++} ++ ++static struct xt_match gradm_mt_reg __read_mostly = { ++ .name = "gradm", ++ .revision = 0, ++ .family = NFPROTO_UNSPEC, ++ .match = gradm_mt, ++ .matchsize = XT_ALIGN(sizeof(struct xt_gradm_mtinfo)), ++ .me = THIS_MODULE, ++}; ++ ++static int __init gradm_mt_init(void) ++{ ++ return xt_register_match(&gradm_mt_reg); ++} ++ ++static void __exit gradm_mt_exit(void) ++{ ++ xt_unregister_match(&gradm_mt_reg); ++} ++ ++module_init(gradm_mt_init); ++module_exit(gradm_mt_exit); ++MODULE_AUTHOR("Zbigniew Krzystolik <zbyniu@destrukcja.pl>"); ++MODULE_DESCRIPTION("Xtables: Grsecurity RBAC match"); ++MODULE_LICENSE("GPL"); ++MODULE_ALIAS("ipt_gradm"); ++MODULE_ALIAS("ip6t_gradm"); +diff --git a/net/netfilter/xt_statistic.c b/net/netfilter/xt_statistic.c +index 4fe4fb4..87a89e5 100644 +--- a/net/netfilter/xt_statistic.c ++++ b/net/netfilter/xt_statistic.c +@@ -19,7 +19,7 @@ + #include <linux/module.h> + + struct xt_statistic_priv { +- atomic_t count; ++ atomic_unchecked_t count; + } ____cacheline_aligned_in_smp; + + MODULE_LICENSE("GPL"); +@@ -42,9 +42,9 @@ statistic_mt(const struct sk_buff *skb, struct xt_action_param *par) + break; + case XT_STATISTIC_MODE_NTH: + do { +- oval = atomic_read(&info->master->count); ++ oval = atomic_read_unchecked(&info->master->count); + nval = (oval == info->u.nth.every) ? 0 : oval + 1; +- } while (atomic_cmpxchg(&info->master->count, oval, nval) != oval); ++ } while (atomic_cmpxchg_unchecked(&info->master->count, oval, nval) != oval); + if (nval == 0) + ret = !ret; + break; +@@ -64,7 +64,7 @@ static int statistic_mt_check(const struct xt_mtchk_param *par) + info->master = kzalloc(sizeof(*info->master), GFP_KERNEL); + if (info->master == NULL) + return -ENOMEM; +- atomic_set(&info->master->count, info->u.nth.count); ++ atomic_set_unchecked(&info->master->count, info->u.nth.count); + + return 0; + } +diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c +index faa48f7..65f7f54 100644 +--- a/net/netlink/af_netlink.c ++++ b/net/netlink/af_netlink.c +@@ -741,7 +741,7 @@ static void netlink_overrun(struct sock *sk) + sk->sk_error_report(sk); + } + } +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + } + + static struct sock *netlink_getsockbypid(struct sock *ssk, u32 pid) +@@ -2013,7 +2013,7 @@ static int netlink_seq_show(struct seq_file *seq, void *v) + sk_wmem_alloc_get(s), + nlk->cb, + atomic_read(&s->sk_refcnt), +- atomic_read(&s->sk_drops), ++ atomic_read_unchecked(&s->sk_drops), + sock_i_ino(s) + ); + +diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c +index 06592d8..64860f6 100644 +--- a/net/netrom/af_netrom.c ++++ b/net/netrom/af_netrom.c +@@ -838,6 +838,7 @@ static int nr_getname(struct socket *sock, struct sockaddr *uaddr, + struct sock *sk = sock->sk; + struct nr_sock *nr = nr_sk(sk); + ++ memset(sax, 0, sizeof(*sax)); + lock_sock(sk); + if (peer != 0) { + if (sk->sk_state != TCP_ESTABLISHED) { +@@ -852,7 +853,6 @@ static int nr_getname(struct socket *sock, struct sockaddr *uaddr, + *uaddr_len = sizeof(struct full_sockaddr_ax25); + } else { + sax->fsa_ax25.sax25_family = AF_NETROM; +- sax->fsa_ax25.sax25_ndigis = 0; + sax->fsa_ax25.sax25_call = nr->source_addr; + *uaddr_len = sizeof(struct sockaddr_ax25); + } +diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c +index 4f2c0df..f0ff342 100644 +--- a/net/packet/af_packet.c ++++ b/net/packet/af_packet.c +@@ -1687,7 +1687,7 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev, + + spin_lock(&sk->sk_receive_queue.lock); + po->stats.tp_packets++; +- skb->dropcount = atomic_read(&sk->sk_drops); ++ skb->dropcount = atomic_read_unchecked(&sk->sk_drops); + __skb_queue_tail(&sk->sk_receive_queue, skb); + spin_unlock(&sk->sk_receive_queue.lock); + sk->sk_data_ready(sk, skb->len); +@@ -1696,7 +1696,7 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev, + drop_n_acct: + spin_lock(&sk->sk_receive_queue.lock); + po->stats.tp_drops++; +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + spin_unlock(&sk->sk_receive_queue.lock); + + drop_n_restore: +@@ -3294,7 +3294,7 @@ static int packet_getsockopt(struct socket *sock, int level, int optname, + case PACKET_HDRLEN: + if (len > sizeof(int)) + len = sizeof(int); +- if (copy_from_user(&val, optval, len)) ++ if (len > sizeof(val) || copy_from_user(&val, optval, len)) + return -EFAULT; + switch (val) { + case TPACKET_V1: +@@ -3344,7 +3344,7 @@ static int packet_getsockopt(struct socket *sock, int level, int optname, + + if (put_user(len, optlen)) + return -EFAULT; +- if (copy_to_user(optval, data, len)) ++ if (len > sizeof(st) || copy_to_user(optval, data, len)) + return -EFAULT; + return 0; + } +diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c +index d65f699..05aa6ce 100644 +--- a/net/phonet/af_phonet.c ++++ b/net/phonet/af_phonet.c +@@ -41,7 +41,7 @@ static struct phonet_protocol *phonet_proto_get(unsigned int protocol) + { + struct phonet_protocol *pp; + +- if (protocol >= PHONET_NPROTO) ++ if (protocol < 0 || protocol >= PHONET_NPROTO) + return NULL; + + rcu_read_lock(); +@@ -469,7 +469,7 @@ int __init_or_module phonet_proto_register(unsigned int protocol, + { + int err = 0; + +- if (protocol >= PHONET_NPROTO) ++ if (protocol < 0 || protocol >= PHONET_NPROTO) + return -EINVAL; + + err = proto_register(pp->prot, 1); +diff --git a/net/phonet/pep.c b/net/phonet/pep.c +index 9726fe6..fc4e3a4 100644 +--- a/net/phonet/pep.c ++++ b/net/phonet/pep.c +@@ -388,7 +388,7 @@ static int pipe_do_rcv(struct sock *sk, struct sk_buff *skb) + + case PNS_PEP_CTRL_REQ: + if (skb_queue_len(&pn->ctrlreq_queue) >= PNPIPE_CTRLREQ_MAX) { +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + break; + } + __skb_pull(skb, 4); +@@ -409,7 +409,7 @@ static int pipe_do_rcv(struct sock *sk, struct sk_buff *skb) + } + + if (pn->rx_credits == 0) { +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + err = -ENOBUFS; + break; + } +@@ -580,7 +580,7 @@ static int pipe_handler_do_rcv(struct sock *sk, struct sk_buff *skb) + } + + if (pn->rx_credits == 0) { +- atomic_inc(&sk->sk_drops); ++ atomic_inc_unchecked(&sk->sk_drops); + err = NET_RX_DROP; + break; + } +diff --git a/net/phonet/socket.c b/net/phonet/socket.c +index 4c7eff3..59c727f 100644 +--- a/net/phonet/socket.c ++++ b/net/phonet/socket.c +@@ -613,8 +613,13 @@ static int pn_sock_seq_show(struct seq_file *seq, void *v) + pn->resource, sk->sk_state, + sk_wmem_alloc_get(sk), sk_rmem_alloc_get(sk), + sock_i_uid(sk), sock_i_ino(sk), +- atomic_read(&sk->sk_refcnt), sk, +- atomic_read(&sk->sk_drops), &len); ++ atomic_read(&sk->sk_refcnt), ++#ifdef CONFIG_GRKERNSEC_HIDESYM ++ NULL, ++#else ++ sk, ++#endif ++ atomic_read_unchecked(&sk->sk_drops), &len); + } + seq_printf(seq, "%*s\n", 127 - len, ""); + return 0; +diff --git a/net/rds/cong.c b/net/rds/cong.c +index e5b65ac..f3b6fb7 100644 +--- a/net/rds/cong.c ++++ b/net/rds/cong.c +@@ -78,7 +78,7 @@ + * finds that the saved generation number is smaller than the global generation + * number, it wakes up the process. + */ +-static atomic_t rds_cong_generation = ATOMIC_INIT(0); ++static atomic_unchecked_t rds_cong_generation = ATOMIC_INIT(0); + + /* + * Congestion monitoring +@@ -233,7 +233,7 @@ void rds_cong_map_updated(struct rds_cong_map *map, uint64_t portmask) + rdsdebug("waking map %p for %pI4\n", + map, &map->m_addr); + rds_stats_inc(s_cong_update_received); +- atomic_inc(&rds_cong_generation); ++ atomic_inc_unchecked(&rds_cong_generation); + if (waitqueue_active(&map->m_waitq)) + wake_up(&map->m_waitq); + if (waitqueue_active(&rds_poll_waitq)) +@@ -259,7 +259,7 @@ EXPORT_SYMBOL_GPL(rds_cong_map_updated); + + int rds_cong_updated_since(unsigned long *recent) + { +- unsigned long gen = atomic_read(&rds_cong_generation); ++ unsigned long gen = atomic_read_unchecked(&rds_cong_generation); + + if (likely(*recent == gen)) + return 0; +diff --git a/net/rds/ib.h b/net/rds/ib.h +index edfaaaf..8c89879 100644 +--- a/net/rds/ib.h ++++ b/net/rds/ib.h +@@ -128,7 +128,7 @@ struct rds_ib_connection { + /* sending acks */ + unsigned long i_ack_flags; + #ifdef KERNEL_HAS_ATOMIC64 +- atomic64_t i_ack_next; /* next ACK to send */ ++ atomic64_unchecked_t i_ack_next; /* next ACK to send */ + #else + spinlock_t i_ack_lock; /* protect i_ack_next */ + u64 i_ack_next; /* next ACK to send */ +diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c +index a1e1162..265e129 100644 +--- a/net/rds/ib_cm.c ++++ b/net/rds/ib_cm.c +@@ -718,7 +718,7 @@ void rds_ib_conn_shutdown(struct rds_connection *conn) + /* Clear the ACK state */ + clear_bit(IB_ACK_IN_FLIGHT, &ic->i_ack_flags); + #ifdef KERNEL_HAS_ATOMIC64 +- atomic64_set(&ic->i_ack_next, 0); ++ atomic64_set_unchecked(&ic->i_ack_next, 0); + #else + ic->i_ack_next = 0; + #endif +diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c +index 8d19491..05a3e65 100644 +--- a/net/rds/ib_recv.c ++++ b/net/rds/ib_recv.c +@@ -592,7 +592,7 @@ static u64 rds_ib_get_ack(struct rds_ib_connection *ic) + static void rds_ib_set_ack(struct rds_ib_connection *ic, u64 seq, + int ack_required) + { +- atomic64_set(&ic->i_ack_next, seq); ++ atomic64_set_unchecked(&ic->i_ack_next, seq); + if (ack_required) { + smp_mb__before_clear_bit(); + set_bit(IB_ACK_REQUESTED, &ic->i_ack_flags); +@@ -604,7 +604,7 @@ static u64 rds_ib_get_ack(struct rds_ib_connection *ic) + clear_bit(IB_ACK_REQUESTED, &ic->i_ack_flags); + smp_mb__after_clear_bit(); + +- return atomic64_read(&ic->i_ack_next); ++ return atomic64_read_unchecked(&ic->i_ack_next); + } + #endif + +diff --git a/net/rds/iw.h b/net/rds/iw.h +index 04ce3b1..48119a6 100644 +--- a/net/rds/iw.h ++++ b/net/rds/iw.h +@@ -134,7 +134,7 @@ struct rds_iw_connection { + /* sending acks */ + unsigned long i_ack_flags; + #ifdef KERNEL_HAS_ATOMIC64 +- atomic64_t i_ack_next; /* next ACK to send */ ++ atomic64_unchecked_t i_ack_next; /* next ACK to send */ + #else + spinlock_t i_ack_lock; /* protect i_ack_next */ + u64 i_ack_next; /* next ACK to send */ +diff --git a/net/rds/iw_cm.c b/net/rds/iw_cm.c +index a91e1db..cf3053f 100644 +--- a/net/rds/iw_cm.c ++++ b/net/rds/iw_cm.c +@@ -663,7 +663,7 @@ void rds_iw_conn_shutdown(struct rds_connection *conn) + /* Clear the ACK state */ + clear_bit(IB_ACK_IN_FLIGHT, &ic->i_ack_flags); + #ifdef KERNEL_HAS_ATOMIC64 +- atomic64_set(&ic->i_ack_next, 0); ++ atomic64_set_unchecked(&ic->i_ack_next, 0); + #else + ic->i_ack_next = 0; + #endif +diff --git a/net/rds/iw_recv.c b/net/rds/iw_recv.c +index 4503335..db566b4 100644 +--- a/net/rds/iw_recv.c ++++ b/net/rds/iw_recv.c +@@ -427,7 +427,7 @@ static u64 rds_iw_get_ack(struct rds_iw_connection *ic) + static void rds_iw_set_ack(struct rds_iw_connection *ic, u64 seq, + int ack_required) + { +- atomic64_set(&ic->i_ack_next, seq); ++ atomic64_set_unchecked(&ic->i_ack_next, seq); + if (ack_required) { + smp_mb__before_clear_bit(); + set_bit(IB_ACK_REQUESTED, &ic->i_ack_flags); +@@ -439,7 +439,7 @@ static u64 rds_iw_get_ack(struct rds_iw_connection *ic) + clear_bit(IB_ACK_REQUESTED, &ic->i_ack_flags); + smp_mb__after_clear_bit(); + +- return atomic64_read(&ic->i_ack_next); ++ return atomic64_read_unchecked(&ic->i_ack_next); + } + #endif + +diff --git a/net/rds/tcp.c b/net/rds/tcp.c +index edac9ef..16bcb98 100644 +--- a/net/rds/tcp.c ++++ b/net/rds/tcp.c +@@ -59,7 +59,7 @@ void rds_tcp_nonagle(struct socket *sock) + int val = 1; + + set_fs(KERNEL_DS); +- sock->ops->setsockopt(sock, SOL_TCP, TCP_NODELAY, (char __user *)&val, ++ sock->ops->setsockopt(sock, SOL_TCP, TCP_NODELAY, (char __force_user *)&val, + sizeof(val)); + set_fs(oldfs); + } +diff --git a/net/rds/tcp_send.c b/net/rds/tcp_send.c +index 1b4fd68..2234175 100644 +--- a/net/rds/tcp_send.c ++++ b/net/rds/tcp_send.c +@@ -43,7 +43,7 @@ static void rds_tcp_cork(struct socket *sock, int val) + + oldfs = get_fs(); + set_fs(KERNEL_DS); +- sock->ops->setsockopt(sock, SOL_TCP, TCP_CORK, (char __user *)&val, ++ sock->ops->setsockopt(sock, SOL_TCP, TCP_CORK, (char __force_user *)&val, + sizeof(val)); + set_fs(oldfs); + } +diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c +index 74c064c..fdec26f 100644 +--- a/net/rxrpc/af_rxrpc.c ++++ b/net/rxrpc/af_rxrpc.c +@@ -39,7 +39,7 @@ static const struct proto_ops rxrpc_rpc_ops; + __be32 rxrpc_epoch; + + /* current debugging ID */ +-atomic_t rxrpc_debug_id; ++atomic_unchecked_t rxrpc_debug_id; + + /* count of skbs currently in use */ + atomic_t rxrpc_n_skbs; +diff --git a/net/rxrpc/ar-ack.c b/net/rxrpc/ar-ack.c +index c3126e8..21facc7 100644 +--- a/net/rxrpc/ar-ack.c ++++ b/net/rxrpc/ar-ack.c +@@ -175,7 +175,7 @@ static void rxrpc_resend(struct rxrpc_call *call) + + _enter("{%d,%d,%d,%d},", + call->acks_hard, call->acks_unacked, +- atomic_read(&call->sequence), ++ atomic_read_unchecked(&call->sequence), + CIRC_CNT(call->acks_head, call->acks_tail, call->acks_winsz)); + + stop = 0; +@@ -199,7 +199,7 @@ static void rxrpc_resend(struct rxrpc_call *call) + + /* each Tx packet has a new serial number */ + sp->hdr.serial = +- htonl(atomic_inc_return(&call->conn->serial)); ++ htonl(atomic_inc_return_unchecked(&call->conn->serial)); + + hdr = (struct rxrpc_header *) txb->head; + hdr->serial = sp->hdr.serial; +@@ -403,7 +403,7 @@ static void rxrpc_rotate_tx_window(struct rxrpc_call *call, u32 hard) + */ + static void rxrpc_clear_tx_window(struct rxrpc_call *call) + { +- rxrpc_rotate_tx_window(call, atomic_read(&call->sequence)); ++ rxrpc_rotate_tx_window(call, atomic_read_unchecked(&call->sequence)); + } + + /* +@@ -629,7 +629,7 @@ process_further: + + latest = ntohl(sp->hdr.serial); + hard = ntohl(ack.firstPacket); +- tx = atomic_read(&call->sequence); ++ tx = atomic_read_unchecked(&call->sequence); + + _proto("Rx ACK %%%u { m=%hu f=#%u p=#%u s=%%%u r=%s n=%u }", + latest, +@@ -1161,7 +1161,7 @@ void rxrpc_process_call(struct work_struct *work) + goto maybe_reschedule; + + send_ACK_with_skew: +- ack.maxSkew = htons(atomic_read(&call->conn->hi_serial) - ++ ack.maxSkew = htons(atomic_read_unchecked(&call->conn->hi_serial) - + ntohl(ack.serial)); + send_ACK: + mtu = call->conn->trans->peer->if_mtu; +@@ -1173,7 +1173,7 @@ send_ACK: + ackinfo.rxMTU = htonl(5692); + ackinfo.jumbo_max = htonl(4); + +- hdr.serial = htonl(atomic_inc_return(&call->conn->serial)); ++ hdr.serial = htonl(atomic_inc_return_unchecked(&call->conn->serial)); + _proto("Tx ACK %%%u { m=%hu f=#%u p=#%u s=%%%u r=%s n=%u }", + ntohl(hdr.serial), + ntohs(ack.maxSkew), +@@ -1191,7 +1191,7 @@ send_ACK: + send_message: + _debug("send message"); + +- hdr.serial = htonl(atomic_inc_return(&call->conn->serial)); ++ hdr.serial = htonl(atomic_inc_return_unchecked(&call->conn->serial)); + _proto("Tx %s %%%u", rxrpc_pkts[hdr.type], ntohl(hdr.serial)); + send_message_2: + +diff --git a/net/rxrpc/ar-call.c b/net/rxrpc/ar-call.c +index bf656c2..48f9d27 100644 +--- a/net/rxrpc/ar-call.c ++++ b/net/rxrpc/ar-call.c +@@ -83,7 +83,7 @@ static struct rxrpc_call *rxrpc_alloc_call(gfp_t gfp) + spin_lock_init(&call->lock); + rwlock_init(&call->state_lock); + atomic_set(&call->usage, 1); +- call->debug_id = atomic_inc_return(&rxrpc_debug_id); ++ call->debug_id = atomic_inc_return_unchecked(&rxrpc_debug_id); + call->state = RXRPC_CALL_CLIENT_SEND_REQUEST; + + memset(&call->sock_node, 0xed, sizeof(call->sock_node)); +diff --git a/net/rxrpc/ar-connection.c b/net/rxrpc/ar-connection.c +index 4106ca9..a338d7a 100644 +--- a/net/rxrpc/ar-connection.c ++++ b/net/rxrpc/ar-connection.c +@@ -206,7 +206,7 @@ static struct rxrpc_connection *rxrpc_alloc_connection(gfp_t gfp) + rwlock_init(&conn->lock); + spin_lock_init(&conn->state_lock); + atomic_set(&conn->usage, 1); +- conn->debug_id = atomic_inc_return(&rxrpc_debug_id); ++ conn->debug_id = atomic_inc_return_unchecked(&rxrpc_debug_id); + conn->avail_calls = RXRPC_MAXCALLS; + conn->size_align = 4; + conn->header_size = sizeof(struct rxrpc_header); +diff --git a/net/rxrpc/ar-connevent.c b/net/rxrpc/ar-connevent.c +index e7ed43a..6afa140 100644 +--- a/net/rxrpc/ar-connevent.c ++++ b/net/rxrpc/ar-connevent.c +@@ -109,7 +109,7 @@ static int rxrpc_abort_connection(struct rxrpc_connection *conn, + + len = iov[0].iov_len + iov[1].iov_len; + +- hdr.serial = htonl(atomic_inc_return(&conn->serial)); ++ hdr.serial = htonl(atomic_inc_return_unchecked(&conn->serial)); + _proto("Tx CONN ABORT %%%u { %d }", ntohl(hdr.serial), abort_code); + + ret = kernel_sendmsg(conn->trans->local->socket, &msg, iov, 2, len); +diff --git a/net/rxrpc/ar-input.c b/net/rxrpc/ar-input.c +index 1a2b0633..e8d1382 100644 +--- a/net/rxrpc/ar-input.c ++++ b/net/rxrpc/ar-input.c +@@ -340,9 +340,9 @@ void rxrpc_fast_process_packet(struct rxrpc_call *call, struct sk_buff *skb) + /* track the latest serial number on this connection for ACK packet + * information */ + serial = ntohl(sp->hdr.serial); +- hi_serial = atomic_read(&call->conn->hi_serial); ++ hi_serial = atomic_read_unchecked(&call->conn->hi_serial); + while (serial > hi_serial) +- hi_serial = atomic_cmpxchg(&call->conn->hi_serial, hi_serial, ++ hi_serial = atomic_cmpxchg_unchecked(&call->conn->hi_serial, hi_serial, + serial); + + /* request ACK generation for any ACK or DATA packet that requests +diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h +index 8e22bd3..f66d1c0 100644 +--- a/net/rxrpc/ar-internal.h ++++ b/net/rxrpc/ar-internal.h +@@ -272,8 +272,8 @@ struct rxrpc_connection { + int error; /* error code for local abort */ + int debug_id; /* debug ID for printks */ + unsigned call_counter; /* call ID counter */ +- atomic_t serial; /* packet serial number counter */ +- atomic_t hi_serial; /* highest serial number received */ ++ atomic_unchecked_t serial; /* packet serial number counter */ ++ atomic_unchecked_t hi_serial; /* highest serial number received */ + u8 avail_calls; /* number of calls available */ + u8 size_align; /* data size alignment (for security) */ + u8 header_size; /* rxrpc + security header size */ +@@ -346,7 +346,7 @@ struct rxrpc_call { + spinlock_t lock; + rwlock_t state_lock; /* lock for state transition */ + atomic_t usage; +- atomic_t sequence; /* Tx data packet sequence counter */ ++ atomic_unchecked_t sequence; /* Tx data packet sequence counter */ + u32 abort_code; /* local/remote abort code */ + enum { /* current state of call */ + RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ +@@ -420,7 +420,7 @@ static inline void rxrpc_abort_call(struct rxrpc_call *call, u32 abort_code) + */ + extern atomic_t rxrpc_n_skbs; + extern __be32 rxrpc_epoch; +-extern atomic_t rxrpc_debug_id; ++extern atomic_unchecked_t rxrpc_debug_id; + extern struct workqueue_struct *rxrpc_workqueue; + + /* +diff --git a/net/rxrpc/ar-local.c b/net/rxrpc/ar-local.c +index 87f7135..74d3703 100644 +--- a/net/rxrpc/ar-local.c ++++ b/net/rxrpc/ar-local.c +@@ -45,7 +45,7 @@ struct rxrpc_local *rxrpc_alloc_local(struct sockaddr_rxrpc *srx) + spin_lock_init(&local->lock); + rwlock_init(&local->services_lock); + atomic_set(&local->usage, 1); +- local->debug_id = atomic_inc_return(&rxrpc_debug_id); ++ local->debug_id = atomic_inc_return_unchecked(&rxrpc_debug_id); + memcpy(&local->srx, srx, sizeof(*srx)); + } + +diff --git a/net/rxrpc/ar-output.c b/net/rxrpc/ar-output.c +index 16ae887..d24f12b 100644 +--- a/net/rxrpc/ar-output.c ++++ b/net/rxrpc/ar-output.c +@@ -682,9 +682,9 @@ static int rxrpc_send_data(struct kiocb *iocb, + sp->hdr.cid = call->cid; + sp->hdr.callNumber = call->call_id; + sp->hdr.seq = +- htonl(atomic_inc_return(&call->sequence)); ++ htonl(atomic_inc_return_unchecked(&call->sequence)); + sp->hdr.serial = +- htonl(atomic_inc_return(&conn->serial)); ++ htonl(atomic_inc_return_unchecked(&conn->serial)); + sp->hdr.type = RXRPC_PACKET_TYPE_DATA; + sp->hdr.userStatus = 0; + sp->hdr.securityIndex = conn->security_ix; +diff --git a/net/rxrpc/ar-peer.c b/net/rxrpc/ar-peer.c +index 2754f09..b20e38f 100644 +--- a/net/rxrpc/ar-peer.c ++++ b/net/rxrpc/ar-peer.c +@@ -72,7 +72,7 @@ static struct rxrpc_peer *rxrpc_alloc_peer(struct sockaddr_rxrpc *srx, + INIT_LIST_HEAD(&peer->error_targets); + spin_lock_init(&peer->lock); + atomic_set(&peer->usage, 1); +- peer->debug_id = atomic_inc_return(&rxrpc_debug_id); ++ peer->debug_id = atomic_inc_return_unchecked(&rxrpc_debug_id); + memcpy(&peer->srx, srx, sizeof(*srx)); + + rxrpc_assess_MTU_size(peer); +diff --git a/net/rxrpc/ar-proc.c b/net/rxrpc/ar-proc.c +index 38047f7..9f48511 100644 +--- a/net/rxrpc/ar-proc.c ++++ b/net/rxrpc/ar-proc.c +@@ -164,8 +164,8 @@ static int rxrpc_connection_seq_show(struct seq_file *seq, void *v) + atomic_read(&conn->usage), + rxrpc_conn_states[conn->state], + key_serial(conn->key), +- atomic_read(&conn->serial), +- atomic_read(&conn->hi_serial)); ++ atomic_read_unchecked(&conn->serial), ++ atomic_read_unchecked(&conn->hi_serial)); + + return 0; + } +diff --git a/net/rxrpc/ar-transport.c b/net/rxrpc/ar-transport.c +index 92df566..87ec1bf 100644 +--- a/net/rxrpc/ar-transport.c ++++ b/net/rxrpc/ar-transport.c +@@ -47,7 +47,7 @@ static struct rxrpc_transport *rxrpc_alloc_transport(struct rxrpc_local *local, + spin_lock_init(&trans->client_lock); + rwlock_init(&trans->conn_lock); + atomic_set(&trans->usage, 1); +- trans->debug_id = atomic_inc_return(&rxrpc_debug_id); ++ trans->debug_id = atomic_inc_return_unchecked(&rxrpc_debug_id); + + if (peer->srx.transport.family == AF_INET) { + switch (peer->srx.transport_type) { +diff --git a/net/rxrpc/rxkad.c b/net/rxrpc/rxkad.c +index 7635107..4670276 100644 +--- a/net/rxrpc/rxkad.c ++++ b/net/rxrpc/rxkad.c +@@ -610,7 +610,7 @@ static int rxkad_issue_challenge(struct rxrpc_connection *conn) + + len = iov[0].iov_len + iov[1].iov_len; + +- hdr.serial = htonl(atomic_inc_return(&conn->serial)); ++ hdr.serial = htonl(atomic_inc_return_unchecked(&conn->serial)); + _proto("Tx CHALLENGE %%%u", ntohl(hdr.serial)); + + ret = kernel_sendmsg(conn->trans->local->socket, &msg, iov, 2, len); +@@ -660,7 +660,7 @@ static int rxkad_send_response(struct rxrpc_connection *conn, + + len = iov[0].iov_len + iov[1].iov_len + iov[2].iov_len; + +- hdr->serial = htonl(atomic_inc_return(&conn->serial)); ++ hdr->serial = htonl(atomic_inc_return_unchecked(&conn->serial)); + _proto("Tx RESPONSE %%%u", ntohl(hdr->serial)); + + ret = kernel_sendmsg(conn->trans->local->socket, &msg, iov, 3, len); +diff --git a/net/sctp/proc.c b/net/sctp/proc.c +index 1e2eee8..ce3967e 100644 +--- a/net/sctp/proc.c ++++ b/net/sctp/proc.c +@@ -319,7 +319,8 @@ static int sctp_assocs_seq_show(struct seq_file *seq, void *v) + seq_printf(seq, + "%8pK %8pK %-3d %-3d %-2d %-4d " + "%4d %8d %8d %7d %5lu %-5d %5d ", +- assoc, sk, sctp_sk(sk)->type, sk->sk_state, ++ assoc, sk, ++ sctp_sk(sk)->type, sk->sk_state, + assoc->state, hash, + assoc->assoc_id, + assoc->sndbuf_used, +diff --git a/net/sctp/socket.c b/net/sctp/socket.c +index 92ba71d..9a97902 100644 +--- a/net/sctp/socket.c ++++ b/net/sctp/socket.c +@@ -4569,7 +4569,7 @@ static int sctp_getsockopt_peer_addrs(struct sock *sk, int len, + addrlen = sctp_get_af_specific(temp.sa.sa_family)->sockaddr_len; + if (space_left < addrlen) + return -ENOMEM; +- if (copy_to_user(to, &temp, addrlen)) ++ if (addrlen > sizeof(temp) || copy_to_user(to, &temp, addrlen)) + return -EFAULT; + to += addrlen; + cnt++; +diff --git a/net/socket.c b/net/socket.c +index 851edcd..b786851 100644 +--- a/net/socket.c ++++ b/net/socket.c +@@ -88,6 +88,7 @@ + #include <linux/nsproxy.h> + #include <linux/magic.h> + #include <linux/slab.h> ++#include <linux/in.h> + + #include <asm/uaccess.h> + #include <asm/unistd.h> +@@ -105,6 +106,8 @@ + #include <linux/sockios.h> + #include <linux/atalk.h> + ++#include <linux/grsock.h> ++ + static int sock_no_open(struct inode *irrelevant, struct file *dontcare); + static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos); +@@ -321,7 +324,7 @@ static struct dentry *sockfs_mount(struct file_system_type *fs_type, + &sockfs_dentry_operations, SOCKFS_MAGIC); + } + +-static struct vfsmount *sock_mnt __read_mostly; ++struct vfsmount *sock_mnt __read_mostly; + + static struct file_system_type sock_fs_type = { + .name = "sockfs", +@@ -1207,6 +1210,8 @@ int __sock_create(struct net *net, int family, int type, int protocol, + return -EAFNOSUPPORT; + if (type < 0 || type >= SOCK_MAX) + return -EINVAL; ++ if (protocol < 0) ++ return -EINVAL; + + /* Compatibility. + +@@ -1339,6 +1344,16 @@ SYSCALL_DEFINE3(socket, int, family, int, type, int, protocol) + if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK)) + flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK; + ++ if(!gr_search_socket(family, type, protocol)) { ++ retval = -EACCES; ++ goto out; ++ } ++ ++ if (gr_handle_sock_all(family, type, protocol)) { ++ retval = -EACCES; ++ goto out; ++ } ++ + retval = sock_create(family, type, protocol, &sock); + if (retval < 0) + goto out; +@@ -1451,6 +1466,14 @@ SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen) + if (sock) { + err = move_addr_to_kernel(umyaddr, addrlen, &address); + if (err >= 0) { ++ if (gr_handle_sock_server((struct sockaddr *)&address)) { ++ err = -EACCES; ++ goto error; ++ } ++ err = gr_search_bind(sock, (struct sockaddr_in *)&address); ++ if (err) ++ goto error; ++ + err = security_socket_bind(sock, + (struct sockaddr *)&address, + addrlen); +@@ -1459,6 +1482,7 @@ SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen) + (struct sockaddr *) + &address, addrlen); + } ++error: + fput_light(sock->file, fput_needed); + } + return err; +@@ -1482,10 +1506,20 @@ SYSCALL_DEFINE2(listen, int, fd, int, backlog) + if ((unsigned)backlog > somaxconn) + backlog = somaxconn; + ++ if (gr_handle_sock_server_other(sock->sk)) { ++ err = -EPERM; ++ goto error; ++ } ++ ++ err = gr_search_listen(sock); ++ if (err) ++ goto error; ++ + err = security_socket_listen(sock, backlog); + if (!err) + err = sock->ops->listen(sock, backlog); + ++error: + fput_light(sock->file, fput_needed); + } + return err; +@@ -1529,6 +1563,18 @@ SYSCALL_DEFINE4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr, + newsock->type = sock->type; + newsock->ops = sock->ops; + ++ if (gr_handle_sock_server_other(sock->sk)) { ++ err = -EPERM; ++ sock_release(newsock); ++ goto out_put; ++ } ++ ++ err = gr_search_accept(sock); ++ if (err) { ++ sock_release(newsock); ++ goto out_put; ++ } ++ + /* + * We don't need try_module_get here, as the listening socket (sock) + * has the protocol module (sock->ops->owner) held. +@@ -1567,6 +1613,8 @@ SYSCALL_DEFINE4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr, + fd_install(newfd, newfile); + err = newfd; + ++ gr_attach_curr_ip(newsock->sk); ++ + out_put: + fput_light(sock->file, fput_needed); + out: +@@ -1599,6 +1647,7 @@ SYSCALL_DEFINE3(connect, int, fd, struct sockaddr __user *, uservaddr, + int, addrlen) + { + struct socket *sock; ++ struct sockaddr *sck; + struct sockaddr_storage address; + int err, fput_needed; + +@@ -1609,6 +1658,17 @@ SYSCALL_DEFINE3(connect, int, fd, struct sockaddr __user *, uservaddr, + if (err < 0) + goto out_put; + ++ sck = (struct sockaddr *)&address; ++ ++ if (gr_handle_sock_client(sck)) { ++ err = -EACCES; ++ goto out_put; ++ } ++ ++ err = gr_search_connect(sock, (struct sockaddr_in *)sck); ++ if (err) ++ goto out_put; ++ + err = + security_socket_connect(sock, (struct sockaddr *)&address, addrlen); + if (err) +@@ -1966,7 +2026,7 @@ static int __sys_sendmsg(struct socket *sock, struct msghdr __user *msg, + * checking falls down on this. + */ + if (copy_from_user(ctl_buf, +- (void __user __force *)msg_sys->msg_control, ++ (void __force_user *)msg_sys->msg_control, + ctl_len)) + goto out_freectl; + msg_sys->msg_control = ctl_buf; +@@ -2136,7 +2196,7 @@ static int __sys_recvmsg(struct socket *sock, struct msghdr __user *msg, + * kernel msghdr to use the kernel address space) + */ + +- uaddr = (__force void __user *)msg_sys->msg_name; ++ uaddr = (void __force_user *)msg_sys->msg_name; + uaddr_len = COMPAT_NAMELEN(msg); + if (MSG_CMSG_COMPAT & flags) { + err = verify_compat_iovec(msg_sys, iov, &addr, VERIFY_WRITE); +@@ -2758,7 +2818,7 @@ static int ethtool_ioctl(struct net *net, struct compat_ifreq __user *ifr32) + } + + ifr = compat_alloc_user_space(buf_size); +- rxnfc = (void *)ifr + ALIGN(sizeof(struct ifreq), 8); ++ rxnfc = (void __user *)ifr + ALIGN(sizeof(struct ifreq), 8); + + if (copy_in_user(&ifr->ifr_name, &ifr32->ifr_name, IFNAMSIZ)) + return -EFAULT; +@@ -2782,12 +2842,12 @@ static int ethtool_ioctl(struct net *net, struct compat_ifreq __user *ifr32) + offsetof(struct ethtool_rxnfc, fs.ring_cookie)); + + if (copy_in_user(rxnfc, compat_rxnfc, +- (void *)(&rxnfc->fs.m_ext + 1) - +- (void *)rxnfc) || ++ (void __user *)(&rxnfc->fs.m_ext + 1) - ++ (void __user *)rxnfc) || + copy_in_user(&rxnfc->fs.ring_cookie, + &compat_rxnfc->fs.ring_cookie, +- (void *)(&rxnfc->fs.location + 1) - +- (void *)&rxnfc->fs.ring_cookie) || ++ (void __user *)(&rxnfc->fs.location + 1) - ++ (void __user *)&rxnfc->fs.ring_cookie) || + copy_in_user(&rxnfc->rule_cnt, &compat_rxnfc->rule_cnt, + sizeof(rxnfc->rule_cnt))) + return -EFAULT; +@@ -2799,12 +2859,12 @@ static int ethtool_ioctl(struct net *net, struct compat_ifreq __user *ifr32) + + if (convert_out) { + if (copy_in_user(compat_rxnfc, rxnfc, +- (const void *)(&rxnfc->fs.m_ext + 1) - +- (const void *)rxnfc) || ++ (const void __user *)(&rxnfc->fs.m_ext + 1) - ++ (const void __user *)rxnfc) || + copy_in_user(&compat_rxnfc->fs.ring_cookie, + &rxnfc->fs.ring_cookie, +- (const void *)(&rxnfc->fs.location + 1) - +- (const void *)&rxnfc->fs.ring_cookie) || ++ (const void __user *)(&rxnfc->fs.location + 1) - ++ (const void __user *)&rxnfc->fs.ring_cookie) || + copy_in_user(&compat_rxnfc->rule_cnt, &rxnfc->rule_cnt, + sizeof(rxnfc->rule_cnt))) + return -EFAULT; +@@ -2874,7 +2934,7 @@ static int bond_ioctl(struct net *net, unsigned int cmd, + old_fs = get_fs(); + set_fs(KERNEL_DS); + err = dev_ioctl(net, cmd, +- (struct ifreq __user __force *) &kifr); ++ (struct ifreq __force_user *) &kifr); + set_fs(old_fs); + + return err; +@@ -2983,7 +3043,7 @@ static int compat_sioc_ifmap(struct net *net, unsigned int cmd, + + old_fs = get_fs(); + set_fs(KERNEL_DS); +- err = dev_ioctl(net, cmd, (void __user __force *)&ifr); ++ err = dev_ioctl(net, cmd, (void __force_user *)&ifr); + set_fs(old_fs); + + if (cmd == SIOCGIFMAP && !err) { +@@ -3088,7 +3148,7 @@ static int routing_ioctl(struct net *net, struct socket *sock, + ret |= __get_user(rtdev, &(ur4->rt_dev)); + if (rtdev) { + ret |= copy_from_user(devname, compat_ptr(rtdev), 15); +- r4.rt_dev = (char __user __force *)devname; ++ r4.rt_dev = (char __force_user *)devname; + devname[15] = 0; + } else + r4.rt_dev = NULL; +@@ -3314,8 +3374,8 @@ int kernel_getsockopt(struct socket *sock, int level, int optname, + int __user *uoptlen; + int err; + +- uoptval = (char __user __force *) optval; +- uoptlen = (int __user __force *) optlen; ++ uoptval = (char __force_user *) optval; ++ uoptlen = (int __force_user *) optlen; + + set_fs(KERNEL_DS); + if (level == SOL_SOCKET) +@@ -3335,7 +3395,7 @@ int kernel_setsockopt(struct socket *sock, int level, int optname, + char __user *uoptval; + int err; + +- uoptval = (char __user __force *) optval; ++ uoptval = (char __force_user *) optval; + + set_fs(KERNEL_DS); + if (level == SOL_SOCKET) +diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c +index 994cfea..5343b6b 100644 +--- a/net/sunrpc/sched.c ++++ b/net/sunrpc/sched.c +@@ -240,9 +240,9 @@ static int rpc_wait_bit_killable(void *word) + #ifdef RPC_DEBUG + static void rpc_task_set_debuginfo(struct rpc_task *task) + { +- static atomic_t rpc_pid; ++ static atomic_unchecked_t rpc_pid; + +- task->tk_pid = atomic_inc_return(&rpc_pid); ++ task->tk_pid = atomic_inc_return_unchecked(&rpc_pid); + } + #else + static inline void rpc_task_set_debuginfo(struct rpc_task *task) +diff --git a/net/sunrpc/xprtrdma/svc_rdma.c b/net/sunrpc/xprtrdma/svc_rdma.c +index 8343737..677025e 100644 +--- a/net/sunrpc/xprtrdma/svc_rdma.c ++++ b/net/sunrpc/xprtrdma/svc_rdma.c +@@ -62,15 +62,15 @@ unsigned int svcrdma_max_req_size = RPCRDMA_MAX_REQ_SIZE; + static unsigned int min_max_inline = 4096; + static unsigned int max_max_inline = 65536; + +-atomic_t rdma_stat_recv; +-atomic_t rdma_stat_read; +-atomic_t rdma_stat_write; +-atomic_t rdma_stat_sq_starve; +-atomic_t rdma_stat_rq_starve; +-atomic_t rdma_stat_rq_poll; +-atomic_t rdma_stat_rq_prod; +-atomic_t rdma_stat_sq_poll; +-atomic_t rdma_stat_sq_prod; ++atomic_unchecked_t rdma_stat_recv; ++atomic_unchecked_t rdma_stat_read; ++atomic_unchecked_t rdma_stat_write; ++atomic_unchecked_t rdma_stat_sq_starve; ++atomic_unchecked_t rdma_stat_rq_starve; ++atomic_unchecked_t rdma_stat_rq_poll; ++atomic_unchecked_t rdma_stat_rq_prod; ++atomic_unchecked_t rdma_stat_sq_poll; ++atomic_unchecked_t rdma_stat_sq_prod; + + /* Temporary NFS request map and context caches */ + struct kmem_cache *svc_rdma_map_cachep; +@@ -110,7 +110,7 @@ static int read_reset_stat(ctl_table *table, int write, + len -= *ppos; + if (len > *lenp) + len = *lenp; +- if (len && copy_to_user(buffer, str_buf, len)) ++ if (len > sizeof str_buf || (len && copy_to_user(buffer, str_buf, len))) + return -EFAULT; + *lenp = len; + *ppos += len; +@@ -151,63 +151,63 @@ static ctl_table svcrdma_parm_table[] = { + { + .procname = "rdma_stat_read", + .data = &rdma_stat_read, +- .maxlen = sizeof(atomic_t), ++ .maxlen = sizeof(atomic_unchecked_t), + .mode = 0644, + .proc_handler = read_reset_stat, + }, + { + .procname = "rdma_stat_recv", + .data = &rdma_stat_recv, +- .maxlen = sizeof(atomic_t), ++ .maxlen = sizeof(atomic_unchecked_t), + .mode = 0644, + .proc_handler = read_reset_stat, + }, + { + .procname = "rdma_stat_write", + .data = &rdma_stat_write, +- .maxlen = sizeof(atomic_t), ++ .maxlen = sizeof(atomic_unchecked_t), + .mode = 0644, + .proc_handler = read_reset_stat, + }, + { + .procname = "rdma_stat_sq_starve", + .data = &rdma_stat_sq_starve, +- .maxlen = sizeof(atomic_t), ++ .maxlen = sizeof(atomic_unchecked_t), + .mode = 0644, + .proc_handler = read_reset_stat, + }, + { + .procname = "rdma_stat_rq_starve", + .data = &rdma_stat_rq_starve, +- .maxlen = sizeof(atomic_t), ++ .maxlen = sizeof(atomic_unchecked_t), + .mode = 0644, + .proc_handler = read_reset_stat, + }, + { + .procname = "rdma_stat_rq_poll", + .data = &rdma_stat_rq_poll, +- .maxlen = sizeof(atomic_t), ++ .maxlen = sizeof(atomic_unchecked_t), + .mode = 0644, + .proc_handler = read_reset_stat, + }, + { + .procname = "rdma_stat_rq_prod", + .data = &rdma_stat_rq_prod, +- .maxlen = sizeof(atomic_t), ++ .maxlen = sizeof(atomic_unchecked_t), + .mode = 0644, + .proc_handler = read_reset_stat, + }, + { + .procname = "rdma_stat_sq_poll", + .data = &rdma_stat_sq_poll, +- .maxlen = sizeof(atomic_t), ++ .maxlen = sizeof(atomic_unchecked_t), + .mode = 0644, + .proc_handler = read_reset_stat, + }, + { + .procname = "rdma_stat_sq_prod", + .data = &rdma_stat_sq_prod, +- .maxlen = sizeof(atomic_t), ++ .maxlen = sizeof(atomic_unchecked_t), + .mode = 0644, + .proc_handler = read_reset_stat, + }, +diff --git a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c +index 41cb63b..c4a1489 100644 +--- a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c ++++ b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c +@@ -501,7 +501,7 @@ next_sge: + svc_rdma_put_context(ctxt, 0); + goto out; + } +- atomic_inc(&rdma_stat_read); ++ atomic_inc_unchecked(&rdma_stat_read); + + if (read_wr.num_sge < chl_map->ch[ch_no].count) { + chl_map->ch[ch_no].count -= read_wr.num_sge; +@@ -611,7 +611,7 @@ int svc_rdma_recvfrom(struct svc_rqst *rqstp) + dto_q); + list_del_init(&ctxt->dto_q); + } else { +- atomic_inc(&rdma_stat_rq_starve); ++ atomic_inc_unchecked(&rdma_stat_rq_starve); + clear_bit(XPT_DATA, &xprt->xpt_flags); + ctxt = NULL; + } +@@ -631,7 +631,7 @@ int svc_rdma_recvfrom(struct svc_rqst *rqstp) + dprintk("svcrdma: processing ctxt=%p on xprt=%p, rqstp=%p, status=%d\n", + ctxt, rdma_xprt, rqstp, ctxt->wc_status); + BUG_ON(ctxt->wc_status != IB_WC_SUCCESS); +- atomic_inc(&rdma_stat_recv); ++ atomic_inc_unchecked(&rdma_stat_recv); + + /* Build up the XDR from the receive buffers. */ + rdma_build_arg_xdr(rqstp, ctxt, ctxt->byte_len); +diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c +index 42eb7ba..c887c45 100644 +--- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c ++++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c +@@ -362,7 +362,7 @@ static int send_write(struct svcxprt_rdma *xprt, struct svc_rqst *rqstp, + write_wr.wr.rdma.remote_addr = to; + + /* Post It */ +- atomic_inc(&rdma_stat_write); ++ atomic_inc_unchecked(&rdma_stat_write); + if (svc_rdma_send(xprt, &write_wr)) + goto err; + return 0; +diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c +index 73b428b..5f3f8f3 100644 +--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c ++++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c +@@ -292,7 +292,7 @@ static void rq_cq_reap(struct svcxprt_rdma *xprt) + return; + + ib_req_notify_cq(xprt->sc_rq_cq, IB_CQ_NEXT_COMP); +- atomic_inc(&rdma_stat_rq_poll); ++ atomic_inc_unchecked(&rdma_stat_rq_poll); + + while ((ret = ib_poll_cq(xprt->sc_rq_cq, 1, &wc)) > 0) { + ctxt = (struct svc_rdma_op_ctxt *)(unsigned long)wc.wr_id; +@@ -314,7 +314,7 @@ static void rq_cq_reap(struct svcxprt_rdma *xprt) + } + + if (ctxt) +- atomic_inc(&rdma_stat_rq_prod); ++ atomic_inc_unchecked(&rdma_stat_rq_prod); + + set_bit(XPT_DATA, &xprt->sc_xprt.xpt_flags); + /* +@@ -386,7 +386,7 @@ static void sq_cq_reap(struct svcxprt_rdma *xprt) + return; + + ib_req_notify_cq(xprt->sc_sq_cq, IB_CQ_NEXT_COMP); +- atomic_inc(&rdma_stat_sq_poll); ++ atomic_inc_unchecked(&rdma_stat_sq_poll); + while ((ret = ib_poll_cq(cq, 1, &wc)) > 0) { + if (wc.status != IB_WC_SUCCESS) + /* Close the transport */ +@@ -404,7 +404,7 @@ static void sq_cq_reap(struct svcxprt_rdma *xprt) + } + + if (ctxt) +- atomic_inc(&rdma_stat_sq_prod); ++ atomic_inc_unchecked(&rdma_stat_sq_prod); + } + + static void sq_comp_handler(struct ib_cq *cq, void *cq_context) +@@ -1266,7 +1266,7 @@ int svc_rdma_send(struct svcxprt_rdma *xprt, struct ib_send_wr *wr) + spin_lock_bh(&xprt->sc_lock); + if (xprt->sc_sq_depth < atomic_read(&xprt->sc_sq_count) + wr_count) { + spin_unlock_bh(&xprt->sc_lock); +- atomic_inc(&rdma_stat_sq_starve); ++ atomic_inc_unchecked(&rdma_stat_sq_starve); + + /* See if we can opportunistically reap SQ WR to make room */ + sq_cq_reap(xprt); +diff --git a/net/sysctl_net.c b/net/sysctl_net.c +index c3e65ae..f512a2b 100644 +--- a/net/sysctl_net.c ++++ b/net/sysctl_net.c +@@ -47,7 +47,7 @@ static int net_ctl_permissions(struct ctl_table_root *root, + struct ctl_table *table) + { + /* Allow network administrator to have same access as root. */ +- if (capable(CAP_NET_ADMIN)) { ++ if (capable_nolog(CAP_NET_ADMIN)) { + int mode = (table->mode >> 6) & 7; + return (mode << 6) | (mode << 3) | mode; + } +diff --git a/net/tipc/link.c b/net/tipc/link.c +index b4b9b30..5b62131 100644 +--- a/net/tipc/link.c ++++ b/net/tipc/link.c +@@ -1203,7 +1203,7 @@ static int link_send_sections_long(struct tipc_port *sender, + struct tipc_msg fragm_hdr; + struct sk_buff *buf, *buf_chain, *prev; + u32 fragm_crs, fragm_rest, hsz, sect_rest; +- const unchar *sect_crs; ++ const unchar __user *sect_crs; + int curr_sect; + u32 fragm_no; + +@@ -1247,7 +1247,7 @@ again: + + if (!sect_rest) { + sect_rest = msg_sect[++curr_sect].iov_len; +- sect_crs = (const unchar *)msg_sect[curr_sect].iov_base; ++ sect_crs = (const unchar __user *)msg_sect[curr_sect].iov_base; + } + + if (sect_rest < fragm_rest) +@@ -1266,7 +1266,7 @@ error: + } + } else + skb_copy_to_linear_data_offset(buf, fragm_crs, +- sect_crs, sz); ++ (const void __force_kernel *)sect_crs, sz); + sect_crs += sz; + sect_rest -= sz; + fragm_crs += sz; +diff --git a/net/tipc/msg.c b/net/tipc/msg.c +index e3afe16..333ea83 100644 +--- a/net/tipc/msg.c ++++ b/net/tipc/msg.c +@@ -99,7 +99,7 @@ int tipc_msg_build(struct tipc_msg *hdr, struct iovec const *msg_sect, + msg_sect[cnt].iov_len); + else + skb_copy_to_linear_data_offset(*buf, pos, +- msg_sect[cnt].iov_base, ++ (const void __force_kernel *)msg_sect[cnt].iov_base, + msg_sect[cnt].iov_len); + pos += msg_sect[cnt].iov_len; + } +diff --git a/net/tipc/subscr.c b/net/tipc/subscr.c +index b2964e9..fdf2e27 100644 +--- a/net/tipc/subscr.c ++++ b/net/tipc/subscr.c +@@ -101,7 +101,7 @@ static void subscr_send_event(struct tipc_subscription *sub, + { + struct iovec msg_sect; + +- msg_sect.iov_base = (void *)&sub->evt; ++ msg_sect.iov_base = (void __force_user *)&sub->evt; + msg_sect.iov_len = sizeof(struct tipc_event); + + sub->evt.event = htohl(event, sub->swap); +diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c +index d510353..26c8a32 100644 +--- a/net/unix/af_unix.c ++++ b/net/unix/af_unix.c +@@ -779,6 +779,12 @@ static struct sock *unix_find_other(struct net *net, + err = -ECONNREFUSED; + if (!S_ISSOCK(inode->i_mode)) + goto put_fail; ++ ++ if (!gr_acl_handle_unix(path.dentry, path.mnt)) { ++ err = -EACCES; ++ goto put_fail; ++ } ++ + u = unix_find_socket_byinode(inode); + if (!u) + goto put_fail; +@@ -799,6 +805,13 @@ static struct sock *unix_find_other(struct net *net, + if (u) { + struct dentry *dentry; + dentry = unix_sk(u)->path.dentry; ++ ++ if (!gr_handle_chroot_unix(pid_vnr(u->sk_peer_pid))) { ++ err = -EPERM; ++ sock_put(u); ++ goto fail; ++ } ++ + if (dentry) + touch_atime(&unix_sk(u)->path); + } else +@@ -881,11 +894,18 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) + err = security_path_mknod(&path, dentry, mode, 0); + if (err) + goto out_mknod_drop_write; ++ if (!gr_acl_handle_mknod(dentry, path.dentry, path.mnt, mode)) { ++ err = -EACCES; ++ goto out_mknod_drop_write; ++ } + err = vfs_mknod(path.dentry->d_inode, dentry, mode, 0); + out_mknod_drop_write: + mnt_drop_write(path.mnt); + if (err) + goto out_mknod_dput; ++ ++ gr_handle_create(dentry, path.mnt); ++ + mutex_unlock(&path.dentry->d_inode->i_mutex); + dput(path.dentry); + path.dentry = dentry; +diff --git a/net/wireless/core.h b/net/wireless/core.h +index 3ac2dd0..fbe533e 100644 +--- a/net/wireless/core.h ++++ b/net/wireless/core.h +@@ -27,7 +27,7 @@ struct cfg80211_registered_device { + struct mutex mtx; + + /* rfkill support */ +- struct rfkill_ops rfkill_ops; ++ rfkill_ops_no_const rfkill_ops; + struct rfkill *rfkill; + struct work_struct rfkill_sync; + +diff --git a/net/wireless/wext-core.c b/net/wireless/wext-core.c +index af648e0..6185d3a 100644 +--- a/net/wireless/wext-core.c ++++ b/net/wireless/wext-core.c +@@ -747,8 +747,7 @@ static int ioctl_standard_iw_point(struct iw_point *iwp, unsigned int cmd, + */ + + /* Support for very large requests */ +- if ((descr->flags & IW_DESCR_FLAG_NOMAX) && +- (user_length > descr->max_tokens)) { ++ if (user_length > descr->max_tokens) { + /* Allow userspace to GET more than max so + * we can support any size GET requests. + * There is still a limit : -ENOMEM. +@@ -787,22 +786,6 @@ static int ioctl_standard_iw_point(struct iw_point *iwp, unsigned int cmd, + } + } + +- if (IW_IS_GET(cmd) && !(descr->flags & IW_DESCR_FLAG_NOMAX)) { +- /* +- * If this is a GET, but not NOMAX, it means that the extra +- * data is not bounded by userspace, but by max_tokens. Thus +- * set the length to max_tokens. This matches the extra data +- * allocation. +- * The driver should fill it with the number of tokens it +- * provided, and it may check iwp->length rather than having +- * knowledge of max_tokens. If the driver doesn't change the +- * iwp->length, this ioctl just copies back max_token tokens +- * filled with zeroes. Hopefully the driver isn't claiming +- * them to be valid data. +- */ +- iwp->length = descr->max_tokens; +- } +- + err = handler(dev, info, (union iwreq_data *) iwp, extra); + + iwp->length += essid_compat; +diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c +index a15d2a0..12142af 100644 +--- a/net/xfrm/xfrm_policy.c ++++ b/net/xfrm/xfrm_policy.c +@@ -299,7 +299,7 @@ static void xfrm_policy_kill(struct xfrm_policy *policy) + { + policy->walk.dead = 1; + +- atomic_inc(&policy->genid); ++ atomic_inc_unchecked(&policy->genid); + + if (del_timer(&policy->timer)) + xfrm_pol_put(policy); +@@ -583,7 +583,7 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl) + hlist_add_head(&policy->bydst, chain); + xfrm_pol_hold(policy); + net->xfrm.policy_count[dir]++; +- atomic_inc(&flow_cache_genid); ++ atomic_inc_unchecked(&flow_cache_genid); + if (delpol) + __xfrm_policy_unlink(delpol, dir); + policy->index = delpol ? delpol->index : xfrm_gen_index(net, dir); +@@ -1530,7 +1530,7 @@ free_dst: + goto out; + } + +-static int inline ++static inline int + xfrm_dst_alloc_copy(void **target, const void *src, int size) + { + if (!*target) { +@@ -1542,7 +1542,7 @@ xfrm_dst_alloc_copy(void **target, const void *src, int size) + return 0; + } + +-static int inline ++static inline int + xfrm_dst_update_parent(struct dst_entry *dst, const struct xfrm_selector *sel) + { + #ifdef CONFIG_XFRM_SUB_POLICY +@@ -1554,7 +1554,7 @@ xfrm_dst_update_parent(struct dst_entry *dst, const struct xfrm_selector *sel) + #endif + } + +-static int inline ++static inline int + xfrm_dst_update_origin(struct dst_entry *dst, const struct flowi *fl) + { + #ifdef CONFIG_XFRM_SUB_POLICY +@@ -1648,7 +1648,7 @@ xfrm_resolve_and_create_bundle(struct xfrm_policy **pols, int num_pols, + + xdst->num_pols = num_pols; + memcpy(xdst->pols, pols, sizeof(struct xfrm_policy*) * num_pols); +- xdst->policy_genid = atomic_read(&pols[0]->genid); ++ xdst->policy_genid = atomic_read_unchecked(&pols[0]->genid); + + return xdst; + } +@@ -2348,7 +2348,7 @@ static int xfrm_bundle_ok(struct xfrm_dst *first) + if (xdst->xfrm_genid != dst->xfrm->genid) + return 0; + if (xdst->num_pols > 0 && +- xdst->policy_genid != atomic_read(&xdst->pols[0]->genid)) ++ xdst->policy_genid != atomic_read_unchecked(&xdst->pols[0]->genid)) + return 0; + + mtu = dst_mtu(dst->child); +@@ -2885,7 +2885,7 @@ static int xfrm_policy_migrate(struct xfrm_policy *pol, + sizeof(pol->xfrm_vec[i].saddr)); + pol->xfrm_vec[i].encap_family = mp->new_family; + /* flush bundles */ +- atomic_inc(&pol->genid); ++ atomic_inc_unchecked(&pol->genid); + } + } + +diff --git a/scripts/Makefile.build b/scripts/Makefile.build +index ff1720d..ed8475e 100644 +--- a/scripts/Makefile.build ++++ b/scripts/Makefile.build +@@ -111,7 +111,7 @@ endif + endif + + # Do not include host rules unless needed +-ifneq ($(hostprogs-y)$(hostprogs-m),) ++ifneq ($(hostprogs-y)$(hostprogs-m)$(hostlibs-y)$(hostlibs-m)$(hostcxxlibs-y)$(hostcxxlibs-m),) + include scripts/Makefile.host + endif + +diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean +index 686cb0d..9d653bf 100644 +--- a/scripts/Makefile.clean ++++ b/scripts/Makefile.clean +@@ -43,7 +43,8 @@ subdir-ymn := $(addprefix $(obj)/,$(subdir-ymn)) + __clean-files := $(extra-y) $(always) \ + $(targets) $(clean-files) \ + $(host-progs) \ +- $(hostprogs-y) $(hostprogs-m) $(hostprogs-) ++ $(hostprogs-y) $(hostprogs-m) $(hostprogs-) \ ++ $(hostlibs-y) $(hostlibs-m) $(hostlibs-) + + __clean-files := $(filter-out $(no-clean-files), $(__clean-files)) + +diff --git a/scripts/Makefile.host b/scripts/Makefile.host +index 1ac414f..38575f7 100644 +--- a/scripts/Makefile.host ++++ b/scripts/Makefile.host +@@ -31,6 +31,8 @@ + # Note: Shared libraries consisting of C++ files are not supported + + __hostprogs := $(sort $(hostprogs-y) $(hostprogs-m)) ++__hostlibs := $(sort $(hostlibs-y) $(hostlibs-m)) ++__hostcxxlibs := $(sort $(hostcxxlibs-y) $(hostcxxlibs-m)) + + # C code + # Executables compiled from a single .c file +@@ -54,11 +56,15 @@ host-cxxobjs := $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs))) + # Shared libaries (only .c supported) + # Shared libraries (.so) - all .so files referenced in "xxx-objs" + host-cshlib := $(sort $(filter %.so, $(host-cobjs))) ++host-cshlib += $(sort $(filter %.so, $(__hostlibs))) ++host-cxxshlib := $(sort $(filter %.so, $(__hostcxxlibs))) + # Remove .so files from "xxx-objs" + host-cobjs := $(filter-out %.so,$(host-cobjs)) ++host-cxxobjs := $(filter-out %.so,$(host-cxxobjs)) + +-#Object (.o) files used by the shared libaries ++# Object (.o) files used by the shared libaries + host-cshobjs := $(sort $(foreach m,$(host-cshlib),$($(m:.so=-objs)))) ++host-cxxshobjs := $(sort $(foreach m,$(host-cxxshlib),$($(m:.so=-objs)))) + + # output directory for programs/.o files + # hostprogs-y := tools/build may have been specified. Retrieve directory +@@ -82,7 +88,9 @@ host-cobjs := $(addprefix $(obj)/,$(host-cobjs)) + host-cxxmulti := $(addprefix $(obj)/,$(host-cxxmulti)) + host-cxxobjs := $(addprefix $(obj)/,$(host-cxxobjs)) + host-cshlib := $(addprefix $(obj)/,$(host-cshlib)) ++host-cxxshlib := $(addprefix $(obj)/,$(host-cxxshlib)) + host-cshobjs := $(addprefix $(obj)/,$(host-cshobjs)) ++host-cxxshobjs := $(addprefix $(obj)/,$(host-cxxshobjs)) + host-objdirs := $(addprefix $(obj)/,$(host-objdirs)) + + obj-dirs += $(host-objdirs) +@@ -156,6 +164,13 @@ quiet_cmd_host-cshobjs = HOSTCC -fPIC $@ + $(host-cshobjs): $(obj)/%.o: $(src)/%.c FORCE + $(call if_changed_dep,host-cshobjs) + ++# Compile .c file, create position independent .o file ++# host-cxxshobjs -> .o ++quiet_cmd_host-cxxshobjs = HOSTCXX -fPIC $@ ++ cmd_host-cxxshobjs = $(HOSTCXX) $(hostcxx_flags) -fPIC -c -o $@ $< ++$(host-cxxshobjs): $(obj)/%.o: $(src)/%.c FORCE ++ $(call if_changed_dep,host-cxxshobjs) ++ + # Link a shared library, based on position independent .o files + # *.o -> .so shared library (host-cshlib) + quiet_cmd_host-cshlib = HOSTLLD -shared $@ +@@ -165,6 +180,15 @@ quiet_cmd_host-cshlib = HOSTLLD -shared $@ + $(host-cshlib): $(obj)/%: $(host-cshobjs) FORCE + $(call if_changed,host-cshlib) + ++# Link a shared library, based on position independent .o files ++# *.o -> .so shared library (host-cxxshlib) ++quiet_cmd_host-cxxshlib = HOSTLLD -shared $@ ++ cmd_host-cxxshlib = $(HOSTCXX) $(HOSTLDFLAGS) -shared -o $@ \ ++ $(addprefix $(obj)/,$($(@F:.so=-objs))) \ ++ $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F)) ++$(host-cxxshlib): $(obj)/%: $(host-cxxshobjs) FORCE ++ $(call if_changed,host-cxxshlib) ++ + targets += $(host-csingle) $(host-cmulti) $(host-cobjs)\ +- $(host-cxxmulti) $(host-cxxobjs) $(host-cshlib) $(host-cshobjs) ++ $(host-cxxmulti) $(host-cxxobjs) $(host-cshlib) $(host-cshobjs) $(host-cxxshlib) $(host-cxxshobjs) + +diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c +index cb1f50c..cef2a7c 100644 +--- a/scripts/basic/fixdep.c ++++ b/scripts/basic/fixdep.c +@@ -161,7 +161,7 @@ static unsigned int strhash(const char *str, unsigned int sz) + /* + * Lookup a value in the configuration string. + */ +-static int is_defined_config(const char *name, int len, unsigned int hash) ++static int is_defined_config(const char *name, unsigned int len, unsigned int hash) + { + struct item *aux; + +@@ -211,10 +211,10 @@ static void clear_config(void) + /* + * Record the use of a CONFIG_* word. + */ +-static void use_config(const char *m, int slen) ++static void use_config(const char *m, unsigned int slen) + { + unsigned int hash = strhash(m, slen); +- int c, i; ++ unsigned int c, i; + + if (is_defined_config(m, slen, hash)) + return; +@@ -235,9 +235,9 @@ static void use_config(const char *m, int slen) + + static void parse_config_file(const char *map, size_t len) + { +- const int *end = (const int *) (map + len); ++ const unsigned int *end = (const unsigned int *) (map + len); + /* start at +1, so that p can never be < map */ +- const int *m = (const int *) map + 1; ++ const unsigned int *m = (const unsigned int *) map + 1; + const char *p, *q; + + for (; m < end; m++) { +@@ -406,7 +406,7 @@ static void print_deps(void) + static void traps(void) + { + static char test[] __attribute__((aligned(sizeof(int)))) = "CONF"; +- int *p = (int *)test; ++ unsigned int *p = (unsigned int *)test; + + if (*p != INT_CONF) { + fprintf(stderr, "fixdep: sizeof(int) != 4 or wrong endianess? %#x\n", +diff --git a/scripts/gcc-plugin.sh b/scripts/gcc-plugin.sh +new file mode 100644 +index 0000000..008ac1a +--- /dev/null ++++ b/scripts/gcc-plugin.sh +@@ -0,0 +1,17 @@ ++#!/bin/bash ++plugincc=`$1 -x c -shared - -o /dev/null -I\`$3 -print-file-name=plugin\`/include 2>&1 <<EOF ++#include "gcc-plugin.h" ++#include "tree.h" ++#include "tm.h" ++#include "rtl.h" ++#ifdef ENABLE_BUILD_WITH_CXX ++#warning $2 ++#else ++#warning $1 ++#endif ++EOF` ++if [ $? -eq 0 ] ++then ++ [[ "$plugincc" =~ "$1" ]] && echo "$1" ++ [[ "$plugincc" =~ "$2" ]] && echo "$2" ++fi +diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c +index 44ddaa5..a3119bd 100644 +--- a/scripts/mod/file2alias.c ++++ b/scripts/mod/file2alias.c +@@ -128,7 +128,7 @@ static void device_id_check(const char *modname, const char *device_id, + unsigned long size, unsigned long id_size, + void *symval) + { +- int i; ++ unsigned int i; + + if (size % id_size || size < id_size) { + if (cross_build != 0) +@@ -158,7 +158,7 @@ static void device_id_check(const char *modname, const char *device_id, + /* USB is special because the bcdDevice can be matched against a numeric range */ + /* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */ + static void do_usb_entry(struct usb_device_id *id, +- unsigned int bcdDevice_initial, int bcdDevice_initial_digits, ++ unsigned int bcdDevice_initial, unsigned int bcdDevice_initial_digits, + unsigned char range_lo, unsigned char range_hi, + unsigned char max, struct module *mod) + { +@@ -259,7 +259,7 @@ static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod) + { + unsigned int devlo, devhi; + unsigned char chi, clo, max; +- int ndigits; ++ unsigned int ndigits; + + id->match_flags = TO_NATIVE(id->match_flags); + id->idVendor = TO_NATIVE(id->idVendor); +@@ -501,7 +501,7 @@ static void do_pnp_device_entry(void *symval, unsigned long size, + for (i = 0; i < count; i++) { + const char *id = (char *)devs[i].id; + char acpi_id[sizeof(devs[0].id)]; +- int j; ++ unsigned int j; + + buf_printf(&mod->dev_table_buf, + "MODULE_ALIAS(\"pnp:d%s*\");\n", id); +@@ -531,7 +531,7 @@ static void do_pnp_card_entries(void *symval, unsigned long size, + + for (j = 0; j < PNP_MAX_DEVICES; j++) { + const char *id = (char *)card->devs[j].id; +- int i2, j2; ++ unsigned int i2, j2; + int dup = 0; + + if (!id[0]) +@@ -557,7 +557,7 @@ static void do_pnp_card_entries(void *symval, unsigned long size, + /* add an individual alias for every device entry */ + if (!dup) { + char acpi_id[sizeof(card->devs[0].id)]; +- int k; ++ unsigned int k; + + buf_printf(&mod->dev_table_buf, + "MODULE_ALIAS(\"pnp:d%s*\");\n", id); +@@ -882,7 +882,7 @@ static void dmi_ascii_filter(char *d, const char *s) + static int do_dmi_entry(const char *filename, struct dmi_system_id *id, + char *alias) + { +- int i, j; ++ unsigned int i, j; + + sprintf(alias, "dmi*"); + +diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c +index c4e7d15..4241aef 100644 +--- a/scripts/mod/modpost.c ++++ b/scripts/mod/modpost.c +@@ -922,6 +922,7 @@ enum mismatch { + ANY_INIT_TO_ANY_EXIT, + ANY_EXIT_TO_ANY_INIT, + EXPORT_TO_INIT_EXIT, ++ DATA_TO_TEXT + }; + + struct sectioncheck { +@@ -1030,6 +1031,12 @@ const struct sectioncheck sectioncheck[] = { + .tosec = { INIT_SECTIONS, EXIT_SECTIONS, NULL }, + .mismatch = EXPORT_TO_INIT_EXIT, + .symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL }, ++}, ++/* Do not reference code from writable data */ ++{ ++ .fromsec = { DATA_SECTIONS, NULL }, ++ .tosec = { TEXT_SECTIONS, NULL }, ++ .mismatch = DATA_TO_TEXT + } + }; + +@@ -1152,10 +1159,10 @@ static Elf_Sym *find_elf_symbol(struct elf_info *elf, Elf64_Sword addr, + continue; + if (ELF_ST_TYPE(sym->st_info) == STT_SECTION) + continue; +- if (sym->st_value == addr) +- return sym; + /* Find a symbol nearby - addr are maybe negative */ + d = sym->st_value - addr; ++ if (d == 0) ++ return sym; + if (d < 0) + d = addr - sym->st_value; + if (d < distance) { +@@ -1434,6 +1441,14 @@ static void report_sec_mismatch(const char *modname, + tosym, prl_to, prl_to, tosym); + free(prl_to); + break; ++ case DATA_TO_TEXT: ++/* ++ fprintf(stderr, ++ "The variable %s references\n" ++ "the %s %s%s%s\n", ++ fromsym, to, sec2annotation(tosec), tosym, to_p); ++*/ ++ break; + } + fprintf(stderr, "\n"); + } +@@ -1668,7 +1683,7 @@ static void section_rel(const char *modname, struct elf_info *elf, + static void check_sec_ref(struct module *mod, const char *modname, + struct elf_info *elf) + { +- int i; ++ unsigned int i; + Elf_Shdr *sechdrs = elf->sechdrs; + + /* Walk through all sections */ +@@ -1766,7 +1781,7 @@ void __attribute__((format(printf, 2, 3))) buf_printf(struct buffer *buf, + va_end(ap); + } + +-void buf_write(struct buffer *buf, const char *s, int len) ++void buf_write(struct buffer *buf, const char *s, unsigned int len) + { + if (buf->size - buf->pos < len) { + buf->size += len + SZ; +@@ -1984,7 +1999,7 @@ static void write_if_changed(struct buffer *b, const char *fname) + if (fstat(fileno(file), &st) < 0) + goto close_write; + +- if (st.st_size != b->pos) ++ if (st.st_size != (off_t)b->pos) + goto close_write; + + tmp = NOFAIL(malloc(b->pos)); +diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h +index 51207e4..f7d603d 100644 +--- a/scripts/mod/modpost.h ++++ b/scripts/mod/modpost.h +@@ -92,15 +92,15 @@ void *do_nofail(void *ptr, const char *expr); + + struct buffer { + char *p; +- int pos; +- int size; ++ unsigned int pos; ++ unsigned int size; + }; + + void __attribute__((format(printf, 2, 3))) + buf_printf(struct buffer *buf, const char *fmt, ...); + + void +-buf_write(struct buffer *buf, const char *s, int len); ++buf_write(struct buffer *buf, const char *s, unsigned int len); + + struct module { + struct module *next; +diff --git a/scripts/mod/sumversion.c b/scripts/mod/sumversion.c +index 9dfcd6d..099068e 100644 +--- a/scripts/mod/sumversion.c ++++ b/scripts/mod/sumversion.c +@@ -470,7 +470,7 @@ static void write_version(const char *filename, const char *sum, + goto out; + } + +- if (write(fd, sum, strlen(sum)+1) != strlen(sum)+1) { ++ if (write(fd, sum, strlen(sum)+1) != (ssize_t)strlen(sum)+1) { + warn("writing sum in %s failed: %s\n", + filename, strerror(errno)); + goto out; +diff --git a/scripts/pnmtologo.c b/scripts/pnmtologo.c +index 5c11312..72742b5 100644 +--- a/scripts/pnmtologo.c ++++ b/scripts/pnmtologo.c +@@ -237,14 +237,14 @@ static void write_header(void) + fprintf(out, " * Linux logo %s\n", logoname); + fputs(" */\n\n", out); + fputs("#include <linux/linux_logo.h>\n\n", out); +- fprintf(out, "static unsigned char %s_data[] __initdata = {\n", ++ fprintf(out, "static unsigned char %s_data[] = {\n", + logoname); + } + + static void write_footer(void) + { + fputs("\n};\n\n", out); +- fprintf(out, "const struct linux_logo %s __initconst = {\n", logoname); ++ fprintf(out, "const struct linux_logo %s = {\n", logoname); + fprintf(out, "\t.type\t\t= %s,\n", logo_types[logo_type]); + fprintf(out, "\t.width\t\t= %d,\n", logo_width); + fprintf(out, "\t.height\t\t= %d,\n", logo_height); +@@ -374,7 +374,7 @@ static void write_logo_clut224(void) + fputs("\n};\n\n", out); + + /* write logo clut */ +- fprintf(out, "static unsigned char %s_clut[] __initdata = {\n", ++ fprintf(out, "static unsigned char %s_clut[] = {\n", + logoname); + write_hex_cnt = 0; + for (i = 0; i < logo_clutsize; i++) { +diff --git a/security/Kconfig b/security/Kconfig +index ccc61f8..7244cf1 100644 +--- a/security/Kconfig ++++ b/security/Kconfig +@@ -4,6 +4,861 @@ + + menu "Security options" + ++menu "Grsecurity" ++ ++ config ARCH_TRACK_EXEC_LIMIT ++ bool ++ ++ config PAX_KERNEXEC_PLUGIN ++ bool ++ ++ config PAX_PER_CPU_PGD ++ bool ++ ++ config TASK_SIZE_MAX_SHIFT ++ int ++ depends on X86_64 ++ default 47 if !PAX_PER_CPU_PGD ++ default 42 if PAX_PER_CPU_PGD ++ ++ config PAX_ENABLE_PAE ++ bool ++ default y if (X86_32 && (MPENTIUM4 || MK8 || MPSC || MCORE2 || MATOM)) ++ ++config GRKERNSEC ++ bool "Grsecurity" ++ select CRYPTO ++ select CRYPTO_SHA256 ++ select STOP_MACHINE ++ help ++ If you say Y here, you will be able to configure many features ++ that will enhance the security of your system. It is highly ++ recommended that you say Y here and read through the help ++ for each option so that you fully understand the features and ++ can evaluate their usefulness for your machine. ++ ++choice ++ prompt "Configuration Method" ++ depends on GRKERNSEC ++ default GRKERNSEC_CONFIG_CUSTOM ++ help ++ ++config GRKERNSEC_CONFIG_AUTO ++ bool "Automatic" ++ help ++ If you choose this configuration method, you'll be able to answer a small ++ number of simple questions about how you plan to use this kernel. ++ The settings of grsecurity and PaX will be automatically configured for ++ the highest commonly-used settings within the provided constraints. ++ ++ If you require additional configuration, custom changes can still be made ++ from the "custom configuration" menu. ++ ++config GRKERNSEC_CONFIG_CUSTOM ++ bool "Custom" ++ help ++ If you choose this configuration method, you'll be able to configure all ++ grsecurity and PaX settings manually. Via this method, no options are ++ automatically enabled. ++ ++endchoice ++ ++choice ++ prompt "Usage Type" ++ depends on (GRKERNSEC && GRKERNSEC_CONFIG_AUTO) ++ default GRKERNSEC_CONFIG_SERVER ++ help ++ ++config GRKERNSEC_CONFIG_SERVER ++ bool "Server" ++ help ++ Choose this option if you plan to use this kernel on a server. ++ ++config GRKERNSEC_CONFIG_DESKTOP ++ bool "Desktop" ++ help ++ Choose this option if you plan to use this kernel on a desktop. ++ ++endchoice ++ ++choice ++ prompt "Virtualization Type" ++ depends on (GRKERNSEC && X86 && GRKERNSEC_CONFIG_AUTO) ++ default GRKERNSEC_CONFIG_VIRT_NONE ++ help ++ ++config GRKERNSEC_CONFIG_VIRT_NONE ++ bool "None" ++ help ++ Choose this option if this kernel will be run on bare metal. ++ ++config GRKERNSEC_CONFIG_VIRT_GUEST ++ bool "Guest" ++ help ++ Choose this option if this kernel will be run as a VM guest. ++ ++config GRKERNSEC_CONFIG_VIRT_HOST ++ bool "Host" ++ help ++ Choose this option if this kernel will be run as a VM host. ++ ++endchoice ++ ++choice ++ prompt "Virtualization Hardware" ++ depends on (GRKERNSEC && X86 && GRKERNSEC_CONFIG_AUTO && (GRKERNSEC_CONFIG_VIRT_GUEST || GRKERNSEC_CONFIG_VIRT_HOST)) ++ help ++ ++config GRKERNSEC_CONFIG_VIRT_EPT ++ bool "EPT/RVI Processor Support" ++ depends on X86 ++ help ++ Choose this option if your CPU supports the EPT or RVI features of 2nd-gen ++ hardware virtualization. This allows for additional kernel hardening protections ++ to operate without additional performance impact. ++ ++ To see if your Intel processor supports EPT, see: ++ http://ark.intel.com/Products/VirtualizationTechnology ++ (Most Core i3/5/7 support EPT) ++ ++ To see if your AMD processor supports RVI, see: ++ http://support.amd.com/us/kbarticles/Pages/GPU120AMDRVICPUsHyperVWin8.aspx ++ ++config GRKERNSEC_CONFIG_VIRT_SOFT ++ bool "First-gen/No Hardware Virtualization" ++ help ++ Choose this option if you use an Atom/Pentium/Core 2 processor that either doesn't ++ support hardware virtualization or doesn't support the EPT/RVI extensions. ++ ++endchoice ++ ++choice ++ prompt "Virtualization Software" ++ depends on (GRKERNSEC && GRKERNSEC_CONFIG_AUTO && (GRKERNSEC_CONFIG_VIRT_GUEST || GRKERNSEC_CONFIG_VIRT_HOST)) ++ help ++ ++config GRKERNSEC_CONFIG_VIRT_XEN ++ bool "Xen" ++ help ++ Choose this option if this kernel is running as a Xen guest or host. ++ ++config GRKERNSEC_CONFIG_VIRT_VMWARE ++ bool "VMWare" ++ help ++ Choose this option if this kernel is running as a VMWare guest or host. ++ ++config GRKERNSEC_CONFIG_VIRT_KVM ++ bool "KVM" ++ help ++ Choose this option if this kernel is running as a KVM guest or host. ++ ++config GRKERNSEC_CONFIG_VIRT_VIRTUALBOX ++ bool "VirtualBox" ++ help ++ Choose this option if this kernel is running as a VirtualBox guest or host. ++ ++endchoice ++ ++choice ++ prompt "Required Priorities" ++ depends on (GRKERNSEC && GRKERNSEC_CONFIG_AUTO) ++ default GRKERNSEC_CONFIG_PRIORITY_PERF ++ help ++ ++config GRKERNSEC_CONFIG_PRIORITY_PERF ++ bool "Performance" ++ help ++ Choose this option if performance is of highest priority for this deployment ++ of grsecurity. Features like UDEREF on a 64bit kernel, kernel stack clearing, ++ and freed memory sanitizing will be disabled. ++ ++config GRKERNSEC_CONFIG_PRIORITY_SECURITY ++ bool "Security" ++ help ++ Choose this option if security is of highest priority for this deployment of ++ grsecurity. UDEREF, kernel stack clearing, and freed memory sanitizing will ++ be enabled for this kernel. In a worst-case scenario, these features can ++ introduce a 20% performance hit (UDEREF on x64 contributing half of this hit). ++ ++endchoice ++ ++menu "Default Special Groups" ++depends on (GRKERNSEC && GRKERNSEC_CONFIG_AUTO) ++ ++config GRKERNSEC_PROC_GID ++ int "GID exempted from /proc restrictions" ++ default 1001 ++ help ++ Setting this GID determines which group will be exempted from ++ grsecurity's /proc restrictions, allowing users of the specified ++ group to view network statistics and the existence of other users' ++ processes on the system. ++ ++config GRKERNSEC_TPE_GID ++ int "GID for untrusted users" ++ depends on GRKERNSEC_CONFIG_SERVER ++ default 1005 ++ help ++ Setting this GID determines which group untrusted users should ++ be added to. These users will be placed under grsecurity's Trusted Path ++ Execution mechanism, preventing them from executing their own binaries. ++ The users will only be able to execute binaries in directories owned and ++ writable only by the root user. ++ ++config GRKERNSEC_SYMLINKOWN_GID ++ int "GID for users with kernel-enforced SymlinksIfOwnerMatch" ++ depends on GRKERNSEC_CONFIG_SERVER ++ default 1006 ++ help ++ Setting this GID determines what group kernel-enforced ++ SymlinksIfOwnerMatch will be enabled for. If the sysctl option ++ is enabled, a sysctl option with name "symlinkown_gid" is created. ++ ++ ++endmenu ++ ++menu "Customize Configuration" ++depends on GRKERNSEC ++ ++menu "PaX" ++ ++config PAX ++ bool "Enable various PaX features" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC && (ALPHA || ARM || AVR32 || IA64 || MIPS || PARISC || PPC || SPARC || X86) ++ help ++ This allows you to enable various PaX features. PaX adds ++ intrusion prevention mechanisms to the kernel that reduce ++ the risks posed by exploitable memory corruption bugs. ++ ++menu "PaX Control" ++ depends on PAX ++ ++config PAX_SOFTMODE ++ bool 'Support soft mode' ++ help ++ Enabling this option will allow you to run PaX in soft mode, that ++ is, PaX features will not be enforced by default, only on executables ++ marked explicitly. You must also enable PT_PAX_FLAGS or XATTR_PAX_FLAGS ++ support as they are the only way to mark executables for soft mode use. ++ ++ Soft mode can be activated by using the "pax_softmode=1" kernel command ++ line option on boot. Furthermore you can control various PaX features ++ at runtime via the entries in /proc/sys/kernel/pax. ++ ++config PAX_EI_PAX ++ bool 'Use legacy ELF header marking' ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ Enabling this option will allow you to control PaX features on ++ a per executable basis via the 'chpax' utility available at ++ http://pax.grsecurity.net/. The control flags will be read from ++ an otherwise reserved part of the ELF header. This marking has ++ numerous drawbacks (no support for soft-mode, toolchain does not ++ know about the non-standard use of the ELF header) therefore it ++ has been deprecated in favour of PT_PAX_FLAGS and XATTR_PAX_FLAGS ++ support. ++ ++ If you have applications not marked by the PT_PAX_FLAGS ELF program ++ header and you cannot use XATTR_PAX_FLAGS then you MUST enable this ++ option otherwise they will not get any protection. ++ ++ Note that if you enable PT_PAX_FLAGS or XATTR_PAX_FLAGS marking ++ support as well, they will override the legacy EI_PAX marks. ++ ++config PAX_PT_PAX_FLAGS ++ bool 'Use ELF program header marking' ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ Enabling this option will allow you to control PaX features on ++ a per executable basis via the 'paxctl' utility available at ++ http://pax.grsecurity.net/. The control flags will be read from ++ a PaX specific ELF program header (PT_PAX_FLAGS). This marking ++ has the benefits of supporting both soft mode and being fully ++ integrated into the toolchain (the binutils patch is available ++ from http://pax.grsecurity.net). ++ ++ If you have applications not marked by the PT_PAX_FLAGS ELF program ++ header then you MUST enable either XATTR_PAX_FLAGS or EI_PAX marking ++ support otherwise they will not get any protection. ++ ++ If you enable both PT_PAX_FLAGS and XATTR_PAX_FLAGS support then you ++ must make sure that the marks are the same if a binary has both marks. ++ ++ Note that if you enable the legacy EI_PAX marking support as well, ++ the EI_PAX marks will be overridden by the PT_PAX_FLAGS marks. ++ ++config PAX_XATTR_PAX_FLAGS ++ bool 'Use filesystem extended attributes marking' ++ default y if GRKERNSEC_CONFIG_AUTO ++ select CIFS_XATTR if CIFS ++ select EXT2_FS_XATTR if EXT2_FS ++ select EXT3_FS_XATTR if EXT3_FS ++ select EXT4_FS_XATTR if EXT4_FS ++ select JFFS2_FS_XATTR if JFFS2_FS ++ select REISERFS_FS_XATTR if REISERFS_FS ++ select SQUASHFS_XATTR if SQUASHFS ++ select TMPFS_XATTR if TMPFS ++ select UBIFS_FS_XATTR if UBIFS_FS ++ help ++ Enabling this option will allow you to control PaX features on ++ a per executable basis via the 'setfattr' utility. The control ++ flags will be read from the user.pax.flags extended attribute of ++ the file. This marking has the benefit of supporting binary-only ++ applications that self-check themselves (e.g., skype) and would ++ not tolerate chpax/paxctl changes. The main drawback is that ++ extended attributes are not supported by some filesystems (e.g., ++ isofs, udf, vfat) so copying files through such filesystems will ++ lose the extended attributes and these PaX markings. ++ ++ If you have applications not marked by the PT_PAX_FLAGS ELF program ++ header then you MUST enable either XATTR_PAX_FLAGS or EI_PAX marking ++ support otherwise they will not get any protection. ++ ++ If you enable both PT_PAX_FLAGS and XATTR_PAX_FLAGS support then you ++ must make sure that the marks are the same if a binary has both marks. ++ ++ Note that if you enable the legacy EI_PAX marking support as well, ++ the EI_PAX marks will be overridden by the XATTR_PAX_FLAGS marks. ++ ++choice ++ prompt 'MAC system integration' ++ default PAX_HAVE_ACL_FLAGS ++ help ++ Mandatory Access Control systems have the option of controlling ++ PaX flags on a per executable basis, choose the method supported ++ by your particular system. ++ ++ - "none": if your MAC system does not interact with PaX, ++ - "direct": if your MAC system defines pax_set_initial_flags() itself, ++ - "hook": if your MAC system uses the pax_set_initial_flags_func callback. ++ ++ NOTE: this option is for developers/integrators only. ++ ++ config PAX_NO_ACL_FLAGS ++ bool 'none' ++ ++ config PAX_HAVE_ACL_FLAGS ++ bool 'direct' ++ ++ config PAX_HOOK_ACL_FLAGS ++ bool 'hook' ++endchoice ++ ++endmenu ++ ++menu "Non-executable pages" ++ depends on PAX ++ ++config PAX_NOEXEC ++ bool "Enforce non-executable pages" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on ALPHA || (ARM && (CPU_V6 || CPU_V7)) || IA64 || MIPS || PARISC || PPC || S390 || SPARC || X86 ++ help ++ By design some architectures do not allow for protecting memory ++ pages against execution or even if they do, Linux does not make ++ use of this feature. In practice this means that if a page is ++ readable (such as the stack or heap) it is also executable. ++ ++ There is a well known exploit technique that makes use of this ++ fact and a common programming mistake where an attacker can ++ introduce code of his choice somewhere in the attacked program's ++ memory (typically the stack or the heap) and then execute it. ++ ++ If the attacked program was running with different (typically ++ higher) privileges than that of the attacker, then he can elevate ++ his own privilege level (e.g. get a root shell, write to files for ++ which he does not have write access to, etc). ++ ++ Enabling this option will let you choose from various features ++ that prevent the injection and execution of 'foreign' code in ++ a program. ++ ++ This will also break programs that rely on the old behaviour and ++ expect that dynamically allocated memory via the malloc() family ++ of functions is executable (which it is not). Notable examples ++ are the XFree86 4.x server, the java runtime and wine. ++ ++config PAX_PAGEEXEC ++ bool "Paging based non-executable pages" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on PAX_NOEXEC && (!X86_32 || M586 || M586TSC || M586MMX || M686 || MPENTIUMII || MPENTIUMIII || MPENTIUMM || MCORE2 || MATOM || MPENTIUM4 || MPSC || MK7 || MK8 || MWINCHIPC6 || MWINCHIP2 || MWINCHIP3D || MVIAC3_2 || MVIAC7) ++ select S390_SWITCH_AMODE if S390 ++ select S390_EXEC_PROTECT if S390 ++ select ARCH_TRACK_EXEC_LIMIT if X86_32 ++ help ++ This implementation is based on the paging feature of the CPU. ++ On i386 without hardware non-executable bit support there is a ++ variable but usually low performance impact, however on Intel's ++ P4 core based CPUs it is very high so you should not enable this ++ for kernels meant to be used on such CPUs. ++ ++ On alpha, avr32, ia64, parisc, sparc, sparc64, x86_64 and i386 ++ with hardware non-executable bit support there is no performance ++ impact, on ppc the impact is negligible. ++ ++ Note that several architectures require various emulations due to ++ badly designed userland ABIs, this will cause a performance impact ++ but will disappear as soon as userland is fixed. For example, ppc ++ userland MUST have been built with secure-plt by a recent toolchain. ++ ++config PAX_SEGMEXEC ++ bool "Segmentation based non-executable pages" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on PAX_NOEXEC && X86_32 ++ help ++ This implementation is based on the segmentation feature of the ++ CPU and has a very small performance impact, however applications ++ will be limited to a 1.5 GB address space instead of the normal ++ 3 GB. ++ ++config PAX_EMUTRAMP ++ bool "Emulate trampolines" if (PAX_PAGEEXEC || PAX_SEGMEXEC) && (PARISC || X86) ++ default y if PARISC ++ help ++ There are some programs and libraries that for one reason or ++ another attempt to execute special small code snippets from ++ non-executable memory pages. Most notable examples are the ++ signal handler return code generated by the kernel itself and ++ the GCC trampolines. ++ ++ If you enabled CONFIG_PAX_PAGEEXEC or CONFIG_PAX_SEGMEXEC then ++ such programs will no longer work under your kernel. ++ ++ As a remedy you can say Y here and use the 'chpax' or 'paxctl' ++ utilities to enable trampoline emulation for the affected programs ++ yet still have the protection provided by the non-executable pages. ++ ++ On parisc you MUST enable this option and EMUSIGRT as well, otherwise ++ your system will not even boot. ++ ++ Alternatively you can say N here and use the 'chpax' or 'paxctl' ++ utilities to disable CONFIG_PAX_PAGEEXEC and CONFIG_PAX_SEGMEXEC ++ for the affected files. ++ ++ NOTE: enabling this feature *may* open up a loophole in the ++ protection provided by non-executable pages that an attacker ++ could abuse. Therefore the best solution is to not have any ++ files on your system that would require this option. This can ++ be achieved by not using libc5 (which relies on the kernel ++ signal handler return code) and not using or rewriting programs ++ that make use of the nested function implementation of GCC. ++ Skilled users can just fix GCC itself so that it implements ++ nested function calls in a way that does not interfere with PaX. ++ ++config PAX_EMUSIGRT ++ bool "Automatically emulate sigreturn trampolines" ++ depends on PAX_EMUTRAMP && PARISC ++ default y ++ help ++ Enabling this option will have the kernel automatically detect ++ and emulate signal return trampolines executing on the stack ++ that would otherwise lead to task termination. ++ ++ This solution is intended as a temporary one for users with ++ legacy versions of libc (libc5, glibc 2.0, uClibc before 0.9.17, ++ Modula-3 runtime, etc) or executables linked to such, basically ++ everything that does not specify its own SA_RESTORER function in ++ normal executable memory like glibc 2.1+ does. ++ ++ On parisc you MUST enable this option, otherwise your system will ++ not even boot. ++ ++ NOTE: this feature cannot be disabled on a per executable basis ++ and since it *does* open up a loophole in the protection provided ++ by non-executable pages, the best solution is to not have any ++ files on your system that would require this option. ++ ++config PAX_MPROTECT ++ bool "Restrict mprotect()" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on (PAX_PAGEEXEC || PAX_SEGMEXEC) ++ help ++ Enabling this option will prevent programs from ++ - changing the executable status of memory pages that were ++ not originally created as executable, ++ - making read-only executable pages writable again, ++ - creating executable pages from anonymous memory, ++ - making read-only-after-relocations (RELRO) data pages writable again. ++ ++ You should say Y here to complete the protection provided by ++ the enforcement of non-executable pages. ++ ++ NOTE: you can use the 'chpax' or 'paxctl' utilities to control ++ this feature on a per file basis. ++ ++config PAX_MPROTECT_COMPAT ++ bool "Use legacy/compat protection demoting (read help)" ++ default y if (GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_DESKTOP) ++ depends on PAX_MPROTECT ++ help ++ The current implementation of PAX_MPROTECT denies RWX allocations/mprotects ++ by sending the proper error code to the application. For some broken ++ userland, this can cause problems with Python or other applications. The ++ current implementation however allows for applications like clamav to ++ detect if JIT compilation/execution is allowed and to fall back gracefully ++ to an interpreter-based mode if it does not. While we encourage everyone ++ to use the current implementation as-is and push upstream to fix broken ++ userland (note that the RWX logging option can assist with this), in some ++ environments this may not be possible. Having to disable MPROTECT ++ completely on certain binaries reduces the security benefit of PaX, ++ so this option is provided for those environments to revert to the old ++ behavior. ++ ++config PAX_ELFRELOCS ++ bool "Allow ELF text relocations (read help)" ++ depends on PAX_MPROTECT ++ default n ++ help ++ Non-executable pages and mprotect() restrictions are effective ++ in preventing the introduction of new executable code into an ++ attacked task's address space. There remain only two venues ++ for this kind of attack: if the attacker can execute already ++ existing code in the attacked task then he can either have it ++ create and mmap() a file containing his code or have it mmap() ++ an already existing ELF library that does not have position ++ independent code in it and use mprotect() on it to make it ++ writable and copy his code there. While protecting against ++ the former approach is beyond PaX, the latter can be prevented ++ by having only PIC ELF libraries on one's system (which do not ++ need to relocate their code). If you are sure this is your case, ++ as is the case with all modern Linux distributions, then leave ++ this option disabled. You should say 'n' here. ++ ++config PAX_ETEXECRELOCS ++ bool "Allow ELF ET_EXEC text relocations" ++ depends on PAX_MPROTECT && (ALPHA || IA64 || PARISC) ++ select PAX_ELFRELOCS ++ default y ++ help ++ On some architectures there are incorrectly created applications ++ that require text relocations and would not work without enabling ++ this option. If you are an alpha, ia64 or parisc user, you should ++ enable this option and disable it once you have made sure that ++ none of your applications need it. ++ ++config PAX_EMUPLT ++ bool "Automatically emulate ELF PLT" ++ depends on PAX_MPROTECT && (ALPHA || PARISC || SPARC) ++ default y ++ help ++ Enabling this option will have the kernel automatically detect ++ and emulate the Procedure Linkage Table entries in ELF files. ++ On some architectures such entries are in writable memory, and ++ become non-executable leading to task termination. Therefore ++ it is mandatory that you enable this option on alpha, parisc, ++ sparc and sparc64, otherwise your system would not even boot. ++ ++ NOTE: this feature *does* open up a loophole in the protection ++ provided by the non-executable pages, therefore the proper ++ solution is to modify the toolchain to produce a PLT that does ++ not need to be writable. ++ ++config PAX_DLRESOLVE ++ bool 'Emulate old glibc resolver stub' ++ depends on PAX_EMUPLT && SPARC ++ default n ++ help ++ This option is needed if userland has an old glibc (before 2.4) ++ that puts a 'save' instruction into the runtime generated resolver ++ stub that needs special emulation. ++ ++config PAX_KERNEXEC ++ bool "Enforce non-executable kernel pages" ++ default y if GRKERNSEC_CONFIG_AUTO && (GRKERNSEC_CONFIG_VIRT_NONE || (GRKERNSEC_CONFIG_VIRT_EPT && GRKERNSEC_CONFIG_VIRT_GUEST) || (GRKERNSEC_CONFIG_VIRT_EPT && GRKERNSEC_CONFIG_VIRT_KVM)) ++ depends on (PPC || X86) && (!X86_32 || X86_WP_WORKS_OK) && !XEN ++ select PAX_PER_CPU_PGD if X86_64 || (X86_32 && X86_PAE) ++ select PAX_KERNEXEC_PLUGIN if X86_64 ++ help ++ This is the kernel land equivalent of PAGEEXEC and MPROTECT, ++ that is, enabling this option will make it harder to inject ++ and execute 'foreign' code in kernel memory itself. ++ ++ Note that on x86_64 kernels there is a known regression when ++ this feature and KVM/VMX are both enabled in the host kernel. ++ ++choice ++ prompt "Return Address Instrumentation Method" ++ default PAX_KERNEXEC_PLUGIN_METHOD_BTS ++ depends on PAX_KERNEXEC_PLUGIN ++ help ++ Select the method used to instrument function pointer dereferences. ++ Note that binary modules cannot be instrumented by this approach. ++ ++ config PAX_KERNEXEC_PLUGIN_METHOD_BTS ++ bool "bts" ++ help ++ This method is compatible with binary only modules but has ++ a higher runtime overhead. ++ ++ config PAX_KERNEXEC_PLUGIN_METHOD_OR ++ bool "or" ++ depends on !PARAVIRT ++ help ++ This method is incompatible with binary only modules but has ++ a lower runtime overhead. ++endchoice ++ ++config PAX_KERNEXEC_PLUGIN_METHOD ++ string ++ default "bts" if PAX_KERNEXEC_PLUGIN_METHOD_BTS ++ default "or" if PAX_KERNEXEC_PLUGIN_METHOD_OR ++ default "" ++ ++config PAX_KERNEXEC_MODULE_TEXT ++ int "Minimum amount of memory reserved for module code" ++ default "4" if (!GRKERNSEC_CONFIG_AUTO || GRKERNSEC_CONFIG_SERVER) ++ default "12" if (GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_DESKTOP) ++ depends on PAX_KERNEXEC && X86_32 && MODULES ++ help ++ Due to implementation details the kernel must reserve a fixed ++ amount of memory for module code at compile time that cannot be ++ changed at runtime. Here you can specify the minimum amount ++ in MB that will be reserved. Due to the same implementation ++ details this size will always be rounded up to the next 2/4 MB ++ boundary (depends on PAE) so the actually available memory for ++ module code will usually be more than this minimum. ++ ++ The default 4 MB should be enough for most users but if you have ++ an excessive number of modules (e.g., most distribution configs ++ compile many drivers as modules) or use huge modules such as ++ nvidia's kernel driver, you will need to adjust this amount. ++ A good rule of thumb is to look at your currently loaded kernel ++ modules and add up their sizes. ++ ++endmenu ++ ++menu "Address Space Layout Randomization" ++ depends on PAX ++ ++config PAX_ASLR ++ bool "Address Space Layout Randomization" ++ default y if GRKERNSEC_CONFIG_AUTO ++ help ++ Many if not most exploit techniques rely on the knowledge of ++ certain addresses in the attacked program. The following options ++ will allow the kernel to apply a certain amount of randomization ++ to specific parts of the program thereby forcing an attacker to ++ guess them in most cases. Any failed guess will most likely crash ++ the attacked program which allows the kernel to detect such attempts ++ and react on them. PaX itself provides no reaction mechanisms, ++ instead it is strongly encouraged that you make use of Nergal's ++ segvguard (ftp://ftp.pl.openwall.com/misc/segvguard/) or grsecurity's ++ (http://www.grsecurity.net/) built-in crash detection features or ++ develop one yourself. ++ ++ By saying Y here you can choose to randomize the following areas: ++ - top of the task's kernel stack ++ - top of the task's userland stack ++ - base address for mmap() requests that do not specify one ++ (this includes all libraries) ++ - base address of the main executable ++ ++ It is strongly recommended to say Y here as address space layout ++ randomization has negligible impact on performance yet it provides ++ a very effective protection. ++ ++ NOTE: you can use the 'chpax' or 'paxctl' utilities to control ++ this feature on a per file basis. ++ ++config PAX_RANDKSTACK ++ bool "Randomize kernel stack base" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on X86_TSC && X86 ++ help ++ By saying Y here the kernel will randomize every task's kernel ++ stack on every system call. This will not only force an attacker ++ to guess it but also prevent him from making use of possible ++ leaked information about it. ++ ++ Since the kernel stack is a rather scarce resource, randomization ++ may cause unexpected stack overflows, therefore you should very ++ carefully test your system. Note that once enabled in the kernel ++ configuration, this feature cannot be disabled on a per file basis. ++ ++config PAX_RANDUSTACK ++ bool "Randomize user stack base" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on PAX_ASLR ++ help ++ By saying Y here the kernel will randomize every task's userland ++ stack. The randomization is done in two steps where the second ++ one may apply a big amount of shift to the top of the stack and ++ cause problems for programs that want to use lots of memory (more ++ than 2.5 GB if SEGMEXEC is not active, or 1.25 GB when it is). ++ For this reason the second step can be controlled by 'chpax' or ++ 'paxctl' on a per file basis. ++ ++config PAX_RANDMMAP ++ bool "Randomize mmap() base" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on PAX_ASLR ++ help ++ By saying Y here the kernel will use a randomized base address for ++ mmap() requests that do not specify one themselves. As a result ++ all dynamically loaded libraries will appear at random addresses ++ and therefore be harder to exploit by a technique where an attacker ++ attempts to execute library code for his purposes (e.g. spawn a ++ shell from an exploited program that is running at an elevated ++ privilege level). ++ ++ Furthermore, if a program is relinked as a dynamic ELF file, its ++ base address will be randomized as well, completing the full ++ randomization of the address space layout. Attacking such programs ++ becomes a guess game. You can find an example of doing this at ++ http://pax.grsecurity.net/et_dyn.tar.gz and practical samples at ++ http://www.grsecurity.net/grsec-gcc-specs.tar.gz . ++ ++ NOTE: you can use the 'chpax' or 'paxctl' utilities to control this ++ feature on a per file basis. ++ ++endmenu ++ ++menu "Miscellaneous hardening features" ++ ++config PAX_MEMORY_SANITIZE ++ bool "Sanitize all freed memory" ++ default y if (GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_PRIORITY_SECURITY) ++ depends on !HIBERNATION ++ help ++ By saying Y here the kernel will erase memory pages as soon as they ++ are freed. This in turn reduces the lifetime of data stored in the ++ pages, making it less likely that sensitive information such as ++ passwords, cryptographic secrets, etc stay in memory for too long. ++ ++ This is especially useful for programs whose runtime is short, long ++ lived processes and the kernel itself benefit from this as long as ++ they operate on whole memory pages and ensure timely freeing of pages ++ that may hold sensitive information. ++ ++ The tradeoff is performance impact, on a single CPU system kernel ++ compilation sees a 3% slowdown, other systems and workloads may vary ++ and you are advised to test this feature on your expected workload ++ before deploying it. ++ ++ Note that this feature does not protect data stored in live pages, ++ e.g., process memory swapped to disk may stay there for a long time. ++ ++config PAX_MEMORY_STACKLEAK ++ bool "Sanitize kernel stack" ++ default y if (GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_PRIORITY_SECURITY) ++ depends on X86 ++ help ++ By saying Y here the kernel will erase the kernel stack before it ++ returns from a system call. This in turn reduces the information ++ that a kernel stack leak bug can reveal. ++ ++ Note that such a bug can still leak information that was put on ++ the stack by the current system call (the one eventually triggering ++ the bug) but traces of earlier system calls on the kernel stack ++ cannot leak anymore. ++ ++ The tradeoff is performance impact: on a single CPU system kernel ++ compilation sees a 1% slowdown, other systems and workloads may vary ++ and you are advised to test this feature on your expected workload ++ before deploying it. ++ ++ Note: full support for this feature requires gcc with plugin support ++ so make sure your compiler is at least gcc 4.5.0. Using older gcc ++ versions means that functions with large enough stack frames may ++ leave uninitialized memory behind that may be exposed to a later ++ syscall leaking the stack. ++ ++config PAX_MEMORY_UDEREF ++ bool "Prevent invalid userland pointer dereference" ++ default y if GRKERNSEC_CONFIG_AUTO && (X86_32 || (X86_64 && GRKERNSEC_CONFIG_PRIORITY_SECURITY)) && (GRKERNSEC_CONFIG_VIRT_NONE || GRKERNSEC_CONFIG_VIRT_EPT) ++ depends on X86 && !UML_X86 && !XEN ++ select PAX_PER_CPU_PGD if X86_64 ++ help ++ By saying Y here the kernel will be prevented from dereferencing ++ userland pointers in contexts where the kernel expects only kernel ++ pointers. This is both a useful runtime debugging feature and a ++ security measure that prevents exploiting a class of kernel bugs. ++ ++ The tradeoff is that some virtualization solutions may experience ++ a huge slowdown and therefore you should not enable this feature ++ for kernels meant to run in such environments. Whether a given VM ++ solution is affected or not is best determined by simply trying it ++ out, the performance impact will be obvious right on boot as this ++ mechanism engages from very early on. A good rule of thumb is that ++ VMs running on CPUs without hardware virtualization support (i.e., ++ the majority of IA-32 CPUs) will likely experience the slowdown. ++ ++config PAX_REFCOUNT ++ bool "Prevent various kernel object reference counter overflows" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on GRKERNSEC && ((ARM && (CPU_32v6 || CPU_32v6K || CPU_32v7)) || SPARC64 || X86) ++ help ++ By saying Y here the kernel will detect and prevent overflowing ++ various (but not all) kinds of object reference counters. Such ++ overflows can normally occur due to bugs only and are often, if ++ not always, exploitable. ++ ++ The tradeoff is that data structures protected by an overflowed ++ refcount will never be freed and therefore will leak memory. Note ++ that this leak also happens even without this protection but in ++ that case the overflow can eventually trigger the freeing of the ++ data structure while it is still being used elsewhere, resulting ++ in the exploitable situation that this feature prevents. ++ ++ Since this has a negligible performance impact, you should enable ++ this feature. ++ ++config PAX_USERCOPY ++ bool "Harden heap object copies between kernel and userland" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on X86 || PPC || SPARC || ARM ++ depends on GRKERNSEC && (SLAB || SLUB || SLOB) ++ help ++ By saying Y here the kernel will enforce the size of heap objects ++ when they are copied in either direction between the kernel and ++ userland, even if only a part of the heap object is copied. ++ ++ Specifically, this checking prevents information leaking from the ++ kernel heap during kernel to userland copies (if the kernel heap ++ object is otherwise fully initialized) and prevents kernel heap ++ overflows during userland to kernel copies. ++ ++ Note that the current implementation provides the strictest bounds ++ checks for the SLUB allocator. ++ ++ Enabling this option also enables per-slab cache protection against ++ data in a given cache being copied into/out of via userland ++ accessors. Though the whitelist of regions will be reduced over ++ time, it notably protects important data structures like task structs. ++ ++ If frame pointers are enabled on x86, this option will also restrict ++ copies into and out of the kernel stack to local variables within a ++ single frame. ++ ++ Since this has a negligible performance impact, you should enable ++ this feature. ++ ++config PAX_SIZE_OVERFLOW ++ bool "Prevent various integer overflows in function size parameters" ++ default y if GRKERNSEC_CONFIG_AUTO ++ depends on X86 ++ help ++ By saying Y here the kernel recomputes expressions of function ++ arguments marked by a size_overflow attribute with double integer ++ precision (DImode/TImode for 32/64 bit integer types). ++ ++ The recomputed argument is checked against INT_MAX and an event ++ is logged on overflow and the triggering process is killed. ++ ++ Homepage: ++ http://www.grsecurity.net/~ephox/overflow_plugin/ ++ ++endmenu ++ ++endmenu ++ ++source grsecurity/Kconfig ++ ++endmenu ++ ++endmenu ++ + config KEYS + bool "Enable access key retention support" + help +@@ -169,7 +1024,7 @@ config INTEL_TXT + config LSM_MMAP_MIN_ADDR + int "Low address space for LSM to protect from user allocation" + depends on SECURITY && SECURITY_SELINUX +- default 32768 if ARM ++ default 32768 if ALPHA || ARM || PARISC || SPARC32 + default 65536 + help + This is the portion of low virtual memory which should be protected +diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c +index ad05d39..afffccb 100644 +--- a/security/apparmor/lsm.c ++++ b/security/apparmor/lsm.c +@@ -622,7 +622,7 @@ static int apparmor_task_setrlimit(struct task_struct *task, + return error; + } + +-static struct security_operations apparmor_ops = { ++static struct security_operations apparmor_ops __read_only = { + .name = "apparmor", + + .ptrace_access_check = apparmor_ptrace_access_check, +diff --git a/security/commoncap.c b/security/commoncap.c +index 71a166a..851bb3e 100644 +--- a/security/commoncap.c ++++ b/security/commoncap.c +@@ -576,6 +576,9 @@ int cap_bprm_secureexec(struct linux_binprm *bprm) + { + const struct cred *cred = current_cred(); + ++ if (gr_acl_enable_at_secure()) ++ return 1; ++ + if (cred->uid != 0) { + if (bprm->cap_effective) + return 1; +diff --git a/security/integrity/ima/ima.h b/security/integrity/ima/ima.h +index 3ccf7ac..d73ad64 100644 +--- a/security/integrity/ima/ima.h ++++ b/security/integrity/ima/ima.h +@@ -86,8 +86,8 @@ void ima_add_violation(struct inode *inode, const unsigned char *filename, + extern spinlock_t ima_queue_lock; + + struct ima_h_table { +- atomic_long_t len; /* number of stored measurements in the list */ +- atomic_long_t violations; ++ atomic_long_unchecked_t len; /* number of stored measurements in the list */ ++ atomic_long_unchecked_t violations; + struct hlist_head queue[IMA_MEASURE_HTABLE_SIZE]; + }; + extern struct ima_h_table ima_htable; +diff --git a/security/integrity/ima/ima_api.c b/security/integrity/ima/ima_api.c +index 88a2788..581ab92 100644 +--- a/security/integrity/ima/ima_api.c ++++ b/security/integrity/ima/ima_api.c +@@ -75,7 +75,7 @@ void ima_add_violation(struct inode *inode, const unsigned char *filename, + int result; + + /* can overflow, only indicator */ +- atomic_long_inc(&ima_htable.violations); ++ atomic_long_inc_unchecked(&ima_htable.violations); + + entry = kmalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) { +diff --git a/security/integrity/ima/ima_fs.c b/security/integrity/ima/ima_fs.c +index e1aa2b4..52027bf 100644 +--- a/security/integrity/ima/ima_fs.c ++++ b/security/integrity/ima/ima_fs.c +@@ -28,12 +28,12 @@ + static int valid_policy = 1; + #define TMPBUFLEN 12 + static ssize_t ima_show_htable_value(char __user *buf, size_t count, +- loff_t *ppos, atomic_long_t *val) ++ loff_t *ppos, atomic_long_unchecked_t *val) + { + char tmpbuf[TMPBUFLEN]; + ssize_t len; + +- len = scnprintf(tmpbuf, TMPBUFLEN, "%li\n", atomic_long_read(val)); ++ len = scnprintf(tmpbuf, TMPBUFLEN, "%li\n", atomic_long_read_unchecked(val)); + return simple_read_from_buffer(buf, count, ppos, tmpbuf, len); + } + +diff --git a/security/integrity/ima/ima_queue.c b/security/integrity/ima/ima_queue.c +index 55a6271..ad829c3 100644 +--- a/security/integrity/ima/ima_queue.c ++++ b/security/integrity/ima/ima_queue.c +@@ -81,7 +81,7 @@ static int ima_add_digest_entry(struct ima_template_entry *entry) + INIT_LIST_HEAD(&qe->later); + list_add_tail_rcu(&qe->later, &ima_measurements); + +- atomic_long_inc(&ima_htable.len); ++ atomic_long_inc_unchecked(&ima_htable.len); + key = ima_hash_key(entry->digest); + hlist_add_head_rcu(&qe->hnext, &ima_htable.queue[key]); + return 0; +diff --git a/security/keys/compat.c b/security/keys/compat.c +index 4c48e13..7abdac9 100644 +--- a/security/keys/compat.c ++++ b/security/keys/compat.c +@@ -44,7 +44,7 @@ long compat_keyctl_instantiate_key_iov( + if (ret == 0) + goto no_payload_free; + +- ret = keyctl_instantiate_key_common(id, iov, ioc, ret, ringid); ++ ret = keyctl_instantiate_key_common(id, (const struct iovec __force_user *)iov, ioc, ret, ringid); + + if (iov != iovstack) + kfree(iov); +diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c +index fb767c6..b9c49c0 100644 +--- a/security/keys/keyctl.c ++++ b/security/keys/keyctl.c +@@ -935,7 +935,7 @@ static int keyctl_change_reqkey_auth(struct key *key) + /* + * Copy the iovec data from userspace + */ +-static long copy_from_user_iovec(void *buffer, const struct iovec *iov, ++static long copy_from_user_iovec(void *buffer, const struct iovec __user *iov, + unsigned ioc) + { + for (; ioc > 0; ioc--) { +@@ -957,7 +957,7 @@ static long copy_from_user_iovec(void *buffer, const struct iovec *iov, + * If successful, 0 will be returned. + */ + long keyctl_instantiate_key_common(key_serial_t id, +- const struct iovec *payload_iov, ++ const struct iovec __user *payload_iov, + unsigned ioc, + size_t plen, + key_serial_t ringid) +@@ -1052,7 +1052,7 @@ long keyctl_instantiate_key(key_serial_t id, + [0].iov_len = plen + }; + +- return keyctl_instantiate_key_common(id, iov, 1, plen, ringid); ++ return keyctl_instantiate_key_common(id, (const struct iovec __force_user *)iov, 1, plen, ringid); + } + + return keyctl_instantiate_key_common(id, NULL, 0, 0, ringid); +@@ -1085,7 +1085,7 @@ long keyctl_instantiate_key_iov(key_serial_t id, + if (ret == 0) + goto no_payload_free; + +- ret = keyctl_instantiate_key_common(id, iov, ioc, ret, ringid); ++ ret = keyctl_instantiate_key_common(id, (const struct iovec __force_user *)iov, ioc, ret, ringid); + + if (iov != iovstack) + kfree(iov); +diff --git a/security/keys/keyring.c b/security/keys/keyring.c +index d605f75..2bc6be9 100644 +--- a/security/keys/keyring.c ++++ b/security/keys/keyring.c +@@ -214,15 +214,15 @@ static long keyring_read(const struct key *keyring, + ret = -EFAULT; + + for (loop = 0; loop < klist->nkeys; loop++) { ++ key_serial_t serial; + key = klist->keys[loop]; ++ serial = key->serial; + + tmp = sizeof(key_serial_t); + if (tmp > buflen) + tmp = buflen; + +- if (copy_to_user(buffer, +- &key->serial, +- tmp) != 0) ++ if (copy_to_user(buffer, &serial, tmp)) + goto error; + + buflen -= tmp; +diff --git a/security/min_addr.c b/security/min_addr.c +index f728728..6457a0c 100644 +--- a/security/min_addr.c ++++ b/security/min_addr.c +@@ -14,6 +14,7 @@ unsigned long dac_mmap_min_addr = CONFIG_DEFAULT_MMAP_MIN_ADDR; + */ + static void update_mmap_min_addr(void) + { ++#ifndef SPARC + #ifdef CONFIG_LSM_MMAP_MIN_ADDR + if (dac_mmap_min_addr > CONFIG_LSM_MMAP_MIN_ADDR) + mmap_min_addr = dac_mmap_min_addr; +@@ -22,6 +23,7 @@ static void update_mmap_min_addr(void) + #else + mmap_min_addr = dac_mmap_min_addr; + #endif ++#endif + } + + /* +diff --git a/security/security.c b/security/security.c +index bf619ff..8179030 100644 +--- a/security/security.c ++++ b/security/security.c +@@ -20,6 +20,7 @@ + #include <linux/ima.h> + #include <linux/evm.h> + #include <linux/fsnotify.h> ++#include <linux/mm.h> + #include <net/flow.h> + + #define MAX_LSM_EVM_XATTR 2 +@@ -28,8 +29,8 @@ + static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] = + CONFIG_DEFAULT_SECURITY; + +-static struct security_operations *security_ops; +-static struct security_operations default_security_ops = { ++static struct security_operations *security_ops __read_only; ++static struct security_operations default_security_ops __read_only = { + .name = "default", + }; + +@@ -70,7 +71,9 @@ int __init security_init(void) + + void reset_security_ops(void) + { ++ pax_open_kernel(); + security_ops = &default_security_ops; ++ pax_close_kernel(); + } + + /* Save user chosen LSM */ +diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c +index d85b793..a164832 100644 +--- a/security/selinux/hooks.c ++++ b/security/selinux/hooks.c +@@ -95,8 +95,6 @@ + + #define NUM_SEL_MNT_OPTS 5 + +-extern struct security_operations *security_ops; +- + /* SECMARK reference count */ + static atomic_t selinux_secmark_refcount = ATOMIC_INIT(0); + +@@ -5520,7 +5518,7 @@ static int selinux_key_getsecurity(struct key *key, char **_buffer) + + #endif + +-static struct security_operations selinux_ops = { ++static struct security_operations selinux_ops __read_only = { + .name = "selinux", + + .ptrace_access_check = selinux_ptrace_access_check, +diff --git a/security/selinux/include/xfrm.h b/security/selinux/include/xfrm.h +index c220f31..89fab3f 100644 +--- a/security/selinux/include/xfrm.h ++++ b/security/selinux/include/xfrm.h +@@ -50,7 +50,7 @@ int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall); + + static inline void selinux_xfrm_notify_policyload(void) + { +- atomic_inc(&flow_cache_genid); ++ atomic_inc_unchecked(&flow_cache_genid); + } + #else + static inline int selinux_xfrm_enabled(void) +diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c +index 45c32f0..0038be2 100644 +--- a/security/smack/smack_lsm.c ++++ b/security/smack/smack_lsm.c +@@ -3500,7 +3500,7 @@ static int smack_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) + return 0; + } + +-struct security_operations smack_ops = { ++struct security_operations smack_ops __read_only = { + .name = "smack", + + .ptrace_access_check = smack_ptrace_access_check, +diff --git a/security/tomoyo/tomoyo.c b/security/tomoyo/tomoyo.c +index 620d37c..e2ad89b 100644 +--- a/security/tomoyo/tomoyo.c ++++ b/security/tomoyo/tomoyo.c +@@ -501,7 +501,7 @@ static int tomoyo_socket_sendmsg(struct socket *sock, struct msghdr *msg, + * tomoyo_security_ops is a "struct security_operations" which is used for + * registering TOMOYO. + */ +-static struct security_operations tomoyo_security_ops = { ++static struct security_operations tomoyo_security_ops __read_only = { + .name = "tomoyo", + .cred_alloc_blank = tomoyo_cred_alloc_blank, + .cred_prepare = tomoyo_cred_prepare, +diff --git a/security/yama/Kconfig b/security/yama/Kconfig +index 51d6709..1f3dbe2 100644 +--- a/security/yama/Kconfig ++++ b/security/yama/Kconfig +@@ -1,6 +1,6 @@ + config SECURITY_YAMA + bool "Yama support" +- depends on SECURITY ++ depends on SECURITY && !GRKERNSEC + select SECURITYFS + select SECURITY_PATH + default n +diff --git a/sound/aoa/codecs/onyx.c b/sound/aoa/codecs/onyx.c +index 270790d..c67dfcb 100644 +--- a/sound/aoa/codecs/onyx.c ++++ b/sound/aoa/codecs/onyx.c +@@ -54,7 +54,7 @@ struct onyx { + spdif_locked:1, + analog_locked:1, + original_mute:2; +- int open_count; ++ local_t open_count; + struct codec_info *codec_info; + + /* mutex serializes concurrent access to the device +@@ -753,7 +753,7 @@ static int onyx_open(struct codec_info_item *cii, + struct onyx *onyx = cii->codec_data; + + mutex_lock(&onyx->mutex); +- onyx->open_count++; ++ local_inc(&onyx->open_count); + mutex_unlock(&onyx->mutex); + + return 0; +@@ -765,8 +765,7 @@ static int onyx_close(struct codec_info_item *cii, + struct onyx *onyx = cii->codec_data; + + mutex_lock(&onyx->mutex); +- onyx->open_count--; +- if (!onyx->open_count) ++ if (local_dec_and_test(&onyx->open_count)) + onyx->spdif_locked = onyx->analog_locked = 0; + mutex_unlock(&onyx->mutex); + +diff --git a/sound/aoa/codecs/onyx.h b/sound/aoa/codecs/onyx.h +index ffd2025..df062c9 100644 +--- a/sound/aoa/codecs/onyx.h ++++ b/sound/aoa/codecs/onyx.h +@@ -11,6 +11,7 @@ + #include <linux/i2c.h> + #include <asm/pmac_low_i2c.h> + #include <asm/prom.h> ++#include <asm/local.h> + + /* PCM3052 register definitions */ + +diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c +index 08fde00..0bf641a 100644 +--- a/sound/core/oss/pcm_oss.c ++++ b/sound/core/oss/pcm_oss.c +@@ -1189,10 +1189,10 @@ snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream, const + if (in_kernel) { + mm_segment_t fs; + fs = snd_enter_user(); +- ret = snd_pcm_lib_write(substream, (void __force __user *)ptr, frames); ++ ret = snd_pcm_lib_write(substream, (void __force_user *)ptr, frames); + snd_leave_user(fs); + } else { +- ret = snd_pcm_lib_write(substream, (void __force __user *)ptr, frames); ++ ret = snd_pcm_lib_write(substream, (void __force_user *)ptr, frames); + } + if (ret != -EPIPE && ret != -ESTRPIPE) + break; +@@ -1234,10 +1234,10 @@ snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *p + if (in_kernel) { + mm_segment_t fs; + fs = snd_enter_user(); +- ret = snd_pcm_lib_read(substream, (void __force __user *)ptr, frames); ++ ret = snd_pcm_lib_read(substream, (void __force_user *)ptr, frames); + snd_leave_user(fs); + } else { +- ret = snd_pcm_lib_read(substream, (void __force __user *)ptr, frames); ++ ret = snd_pcm_lib_read(substream, (void __force_user *)ptr, frames); + } + if (ret == -EPIPE) { + if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { +@@ -1337,7 +1337,7 @@ static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const cha + struct snd_pcm_plugin_channel *channels; + size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8; + if (!in_kernel) { +- if (copy_from_user(runtime->oss.buffer, (const char __force __user *)buf, bytes)) ++ if (copy_from_user(runtime->oss.buffer, (const char __force_user *)buf, bytes)) + return -EFAULT; + buf = runtime->oss.buffer; + } +@@ -1407,7 +1407,7 @@ static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const cha + } + } else { + tmp = snd_pcm_oss_write2(substream, +- (const char __force *)buf, ++ (const char __force_kernel *)buf, + runtime->oss.period_bytes, 0); + if (tmp <= 0) + goto err; +@@ -1433,7 +1433,7 @@ static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf, + struct snd_pcm_runtime *runtime = substream->runtime; + snd_pcm_sframes_t frames, frames1; + #ifdef CONFIG_SND_PCM_OSS_PLUGINS +- char __user *final_dst = (char __force __user *)buf; ++ char __user *final_dst = (char __force_user *)buf; + if (runtime->oss.plugin_first) { + struct snd_pcm_plugin_channel *channels; + size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8; +@@ -1495,7 +1495,7 @@ static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __use + xfer += tmp; + runtime->oss.buffer_used -= tmp; + } else { +- tmp = snd_pcm_oss_read2(substream, (char __force *)buf, ++ tmp = snd_pcm_oss_read2(substream, (char __force_kernel *)buf, + runtime->oss.period_bytes, 0); + if (tmp <= 0) + goto err; +@@ -1663,7 +1663,7 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file) + size1); + size1 /= runtime->channels; /* frames */ + fs = snd_enter_user(); +- snd_pcm_lib_write(substream, (void __force __user *)runtime->oss.buffer, size1); ++ snd_pcm_lib_write(substream, (void __force_user *)runtime->oss.buffer, size1); + snd_leave_user(fs); + } + } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { +diff --git a/sound/core/pcm_compat.c b/sound/core/pcm_compat.c +index 91cdf94..4085161 100644 +--- a/sound/core/pcm_compat.c ++++ b/sound/core/pcm_compat.c +@@ -31,7 +31,7 @@ static int snd_pcm_ioctl_delay_compat(struct snd_pcm_substream *substream, + int err; + + fs = snd_enter_user(); +- err = snd_pcm_delay(substream, &delay); ++ err = snd_pcm_delay(substream, (snd_pcm_sframes_t __force_user *)&delay); + snd_leave_user(fs); + if (err < 0) + return err; +diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c +index 3fe99e6..26952e4 100644 +--- a/sound/core/pcm_native.c ++++ b/sound/core/pcm_native.c +@@ -2770,11 +2770,11 @@ int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, + switch (substream->stream) { + case SNDRV_PCM_STREAM_PLAYBACK: + result = snd_pcm_playback_ioctl1(NULL, substream, cmd, +- (void __user *)arg); ++ (void __force_user *)arg); + break; + case SNDRV_PCM_STREAM_CAPTURE: + result = snd_pcm_capture_ioctl1(NULL, substream, cmd, +- (void __user *)arg); ++ (void __force_user *)arg); + break; + default: + result = -EINVAL; +diff --git a/sound/core/seq/seq_device.c b/sound/core/seq/seq_device.c +index 5cf8d65..912a79c 100644 +--- a/sound/core/seq/seq_device.c ++++ b/sound/core/seq/seq_device.c +@@ -64,7 +64,7 @@ struct ops_list { + int argsize; /* argument size */ + + /* operators */ +- struct snd_seq_dev_ops ops; ++ struct snd_seq_dev_ops *ops; + + /* registred devices */ + struct list_head dev_list; /* list of devices */ +@@ -333,7 +333,7 @@ int snd_seq_device_register_driver(char *id, struct snd_seq_dev_ops *entry, + + mutex_lock(&ops->reg_mutex); + /* copy driver operators */ +- ops->ops = *entry; ++ ops->ops = entry; + ops->driver |= DRIVER_LOADED; + ops->argsize = argsize; + +@@ -463,7 +463,7 @@ static int init_device(struct snd_seq_device *dev, struct ops_list *ops) + dev->name, ops->id, ops->argsize, dev->argsize); + return -EINVAL; + } +- if (ops->ops.init_device(dev) >= 0) { ++ if (ops->ops->init_device(dev) >= 0) { + dev->status = SNDRV_SEQ_DEVICE_REGISTERED; + ops->num_init_devices++; + } else { +@@ -490,7 +490,7 @@ static int free_device(struct snd_seq_device *dev, struct ops_list *ops) + dev->name, ops->id, ops->argsize, dev->argsize); + return -EINVAL; + } +- if ((result = ops->ops.free_device(dev)) >= 0 || result == -ENXIO) { ++ if ((result = ops->ops->free_device(dev)) >= 0 || result == -ENXIO) { + dev->status = SNDRV_SEQ_DEVICE_FREE; + dev->driver_data = NULL; + ops->num_init_devices--; +diff --git a/sound/drivers/mts64.c b/sound/drivers/mts64.c +index 621e60e..f4543f5 100644 +--- a/sound/drivers/mts64.c ++++ b/sound/drivers/mts64.c +@@ -29,6 +29,7 @@ + #include <sound/initval.h> + #include <sound/rawmidi.h> + #include <sound/control.h> ++#include <asm/local.h> + + #define CARD_NAME "Miditerminal 4140" + #define DRIVER_NAME "MTS64" +@@ -67,7 +68,7 @@ struct mts64 { + struct pardevice *pardev; + int pardev_claimed; + +- int open_count; ++ local_t open_count; + int current_midi_output_port; + int current_midi_input_port; + u8 mode[MTS64_NUM_INPUT_PORTS]; +@@ -697,7 +698,7 @@ static int snd_mts64_rawmidi_open(struct snd_rawmidi_substream *substream) + { + struct mts64 *mts = substream->rmidi->private_data; + +- if (mts->open_count == 0) { ++ if (local_read(&mts->open_count) == 0) { + /* We don't need a spinlock here, because this is just called + if the device has not been opened before. + So there aren't any IRQs from the device */ +@@ -705,7 +706,7 @@ static int snd_mts64_rawmidi_open(struct snd_rawmidi_substream *substream) + + msleep(50); + } +- ++(mts->open_count); ++ local_inc(&mts->open_count); + + return 0; + } +@@ -715,8 +716,7 @@ static int snd_mts64_rawmidi_close(struct snd_rawmidi_substream *substream) + struct mts64 *mts = substream->rmidi->private_data; + unsigned long flags; + +- --(mts->open_count); +- if (mts->open_count == 0) { ++ if (local_dec_return(&mts->open_count) == 0) { + /* We need the spinlock_irqsave here because we can still + have IRQs at this point */ + spin_lock_irqsave(&mts->lock, flags); +@@ -725,8 +725,8 @@ static int snd_mts64_rawmidi_close(struct snd_rawmidi_substream *substream) + + msleep(500); + +- } else if (mts->open_count < 0) +- mts->open_count = 0; ++ } else if (local_read(&mts->open_count) < 0) ++ local_set(&mts->open_count, 0); + + return 0; + } +diff --git a/sound/drivers/opl4/opl4_lib.c b/sound/drivers/opl4/opl4_lib.c +index b953fb4..1999c01 100644 +--- a/sound/drivers/opl4/opl4_lib.c ++++ b/sound/drivers/opl4/opl4_lib.c +@@ -29,7 +29,7 @@ MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); + MODULE_DESCRIPTION("OPL4 driver"); + MODULE_LICENSE("GPL"); + +-static void inline snd_opl4_wait(struct snd_opl4 *opl4) ++static inline void snd_opl4_wait(struct snd_opl4 *opl4) + { + int timeout = 10; + while ((inb(opl4->fm_port) & OPL4_STATUS_BUSY) && --timeout > 0) +diff --git a/sound/drivers/portman2x4.c b/sound/drivers/portman2x4.c +index 3e32bd3..46fc152 100644 +--- a/sound/drivers/portman2x4.c ++++ b/sound/drivers/portman2x4.c +@@ -48,6 +48,7 @@ + #include <sound/initval.h> + #include <sound/rawmidi.h> + #include <sound/control.h> ++#include <asm/local.h> + + #define CARD_NAME "Portman 2x4" + #define DRIVER_NAME "portman" +@@ -85,7 +86,7 @@ struct portman { + struct pardevice *pardev; + int pardev_claimed; + +- int open_count; ++ local_t open_count; + int mode[PORTMAN_NUM_INPUT_PORTS]; + struct snd_rawmidi_substream *midi_input[PORTMAN_NUM_INPUT_PORTS]; + }; +diff --git a/sound/firewire/amdtp.c b/sound/firewire/amdtp.c +index 87657dd..a8268d4 100644 +--- a/sound/firewire/amdtp.c ++++ b/sound/firewire/amdtp.c +@@ -371,7 +371,7 @@ static void queue_out_packet(struct amdtp_out_stream *s, unsigned int cycle) + ptr = s->pcm_buffer_pointer + data_blocks; + if (ptr >= pcm->runtime->buffer_size) + ptr -= pcm->runtime->buffer_size; +- ACCESS_ONCE(s->pcm_buffer_pointer) = ptr; ++ ACCESS_ONCE_RW(s->pcm_buffer_pointer) = ptr; + + s->pcm_period_pointer += data_blocks; + if (s->pcm_period_pointer >= pcm->runtime->period_size) { +@@ -511,7 +511,7 @@ EXPORT_SYMBOL(amdtp_out_stream_start); + */ + void amdtp_out_stream_update(struct amdtp_out_stream *s) + { +- ACCESS_ONCE(s->source_node_id_field) = ++ ACCESS_ONCE_RW(s->source_node_id_field) = + (fw_parent_device(s->unit)->card->node_id & 0x3f) << 24; + } + EXPORT_SYMBOL(amdtp_out_stream_update); +diff --git a/sound/firewire/amdtp.h b/sound/firewire/amdtp.h +index 537a9cb..8e8c8e9 100644 +--- a/sound/firewire/amdtp.h ++++ b/sound/firewire/amdtp.h +@@ -146,7 +146,7 @@ static inline void amdtp_out_stream_pcm_prepare(struct amdtp_out_stream *s) + static inline void amdtp_out_stream_pcm_trigger(struct amdtp_out_stream *s, + struct snd_pcm_substream *pcm) + { +- ACCESS_ONCE(s->pcm) = pcm; ++ ACCESS_ONCE_RW(s->pcm) = pcm; + } + + /** +diff --git a/sound/firewire/isight.c b/sound/firewire/isight.c +index d428ffe..751ef78 100644 +--- a/sound/firewire/isight.c ++++ b/sound/firewire/isight.c +@@ -96,7 +96,7 @@ static void isight_update_pointers(struct isight *isight, unsigned int count) + ptr += count; + if (ptr >= runtime->buffer_size) + ptr -= runtime->buffer_size; +- ACCESS_ONCE(isight->buffer_pointer) = ptr; ++ ACCESS_ONCE_RW(isight->buffer_pointer) = ptr; + + isight->period_counter += count; + if (isight->period_counter >= runtime->period_size) { +@@ -307,7 +307,7 @@ static int isight_hw_params(struct snd_pcm_substream *substream, + if (err < 0) + return err; + +- ACCESS_ONCE(isight->pcm_active) = true; ++ ACCESS_ONCE_RW(isight->pcm_active) = true; + + return 0; + } +@@ -340,7 +340,7 @@ static int isight_hw_free(struct snd_pcm_substream *substream) + { + struct isight *isight = substream->private_data; + +- ACCESS_ONCE(isight->pcm_active) = false; ++ ACCESS_ONCE_RW(isight->pcm_active) = false; + + mutex_lock(&isight->mutex); + isight_stop_streaming(isight); +@@ -433,10 +433,10 @@ static int isight_trigger(struct snd_pcm_substream *substream, int cmd) + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: +- ACCESS_ONCE(isight->pcm_running) = true; ++ ACCESS_ONCE_RW(isight->pcm_running) = true; + break; + case SNDRV_PCM_TRIGGER_STOP: +- ACCESS_ONCE(isight->pcm_running) = false; ++ ACCESS_ONCE_RW(isight->pcm_running) = false; + break; + default: + return -EINVAL; +diff --git a/sound/isa/cmi8330.c b/sound/isa/cmi8330.c +index 7bd5e33..1fcab12 100644 +--- a/sound/isa/cmi8330.c ++++ b/sound/isa/cmi8330.c +@@ -172,7 +172,7 @@ struct snd_cmi8330 { + + struct snd_pcm *pcm; + struct snd_cmi8330_stream { +- struct snd_pcm_ops ops; ++ snd_pcm_ops_no_const ops; + snd_pcm_open_callback_t open; + void *private_data; /* sb or wss */ + } streams[2]; +diff --git a/sound/oss/sb_audio.c b/sound/oss/sb_audio.c +index 733b014..56ce96f 100644 +--- a/sound/oss/sb_audio.c ++++ b/sound/oss/sb_audio.c +@@ -901,7 +901,7 @@ sb16_copy_from_user(int dev, + buf16 = (signed short *)(localbuf + localoffs); + while (c) + { +- locallen = (c >= LBUFCOPYSIZE ? LBUFCOPYSIZE : c); ++ locallen = ((unsigned)c >= LBUFCOPYSIZE ? LBUFCOPYSIZE : c); + if (copy_from_user(lbuf8, + userbuf+useroffs + p, + locallen)) +diff --git a/sound/oss/swarm_cs4297a.c b/sound/oss/swarm_cs4297a.c +index 09d4648..cf234c7 100644 +--- a/sound/oss/swarm_cs4297a.c ++++ b/sound/oss/swarm_cs4297a.c +@@ -2606,7 +2606,6 @@ static int __init cs4297a_init(void) + { + struct cs4297a_state *s; + u32 pwr, id; +- mm_segment_t fs; + int rval; + #ifndef CONFIG_BCM_CS4297A_CSWARM + u64 cfg; +@@ -2696,22 +2695,23 @@ static int __init cs4297a_init(void) + if (!rval) { + char *sb1250_duart_present; + ++#if 0 ++ mm_segment_t fs; + fs = get_fs(); + set_fs(KERNEL_DS); +-#if 0 + val = SOUND_MASK_LINE; + mixer_ioctl(s, SOUND_MIXER_WRITE_RECSRC, (unsigned long) &val); + for (i = 0; i < ARRAY_SIZE(initvol); i++) { + val = initvol[i].vol; + mixer_ioctl(s, initvol[i].mixch, (unsigned long) &val); + } ++ set_fs(fs); + // cs4297a_write_ac97(s, 0x18, 0x0808); + #else + // cs4297a_write_ac97(s, 0x5e, 0x180); + cs4297a_write_ac97(s, 0x02, 0x0808); + cs4297a_write_ac97(s, 0x18, 0x0808); + #endif +- set_fs(fs); + + list_add(&s->list, &cs4297a_devs); + +diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h +index 56b4f74..7cfd41a 100644 +--- a/sound/pci/hda/hda_codec.h ++++ b/sound/pci/hda/hda_codec.h +@@ -611,7 +611,7 @@ struct hda_bus_ops { + /* notify power-up/down from codec to controller */ + void (*pm_notify)(struct hda_bus *bus); + #endif +-}; ++} __no_const; + + /* template to pass to the bus constructor */ + struct hda_bus_template { +@@ -713,6 +713,7 @@ struct hda_codec_ops { + #endif + void (*reboot_notify)(struct hda_codec *codec); + }; ++typedef struct hda_codec_ops __no_const hda_codec_ops_no_const; + + /* record for amp information cache */ + struct hda_cache_head { +@@ -743,7 +744,7 @@ struct hda_pcm_ops { + struct snd_pcm_substream *substream); + int (*cleanup)(struct hda_pcm_stream *info, struct hda_codec *codec, + struct snd_pcm_substream *substream); +-}; ++} __no_const; + + /* PCM information for each substream */ + struct hda_pcm_stream { +@@ -801,7 +802,7 @@ struct hda_codec { + const char *modelname; /* model name for preset */ + + /* set by patch */ +- struct hda_codec_ops patch_ops; ++ hda_codec_ops_no_const patch_ops; + + /* PCM to create, set by patch_ops.build_pcms callback */ + unsigned int num_pcms; +diff --git a/sound/pci/ice1712/ice1712.h b/sound/pci/ice1712/ice1712.h +index 0da778a..bc38b84 100644 +--- a/sound/pci/ice1712/ice1712.h ++++ b/sound/pci/ice1712/ice1712.h +@@ -269,7 +269,7 @@ struct snd_ak4xxx_private { + unsigned int mask_flags; /* total mask bits */ + struct snd_akm4xxx_ops { + void (*set_rate_val)(struct snd_akm4xxx *ak, unsigned int rate); +- } ops; ++ } __no_const ops; + }; + + struct snd_ice1712_spdif { +@@ -285,7 +285,7 @@ struct snd_ice1712_spdif { + int (*default_put)(struct snd_ice1712 *, struct snd_ctl_elem_value *ucontrol); + void (*stream_get)(struct snd_ice1712 *, struct snd_ctl_elem_value *ucontrol); + int (*stream_put)(struct snd_ice1712 *, struct snd_ctl_elem_value *ucontrol); +- } ops; ++ } __no_const ops; + }; + + +diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c +index a8159b81..5f006a5 100644 +--- a/sound/pci/ymfpci/ymfpci_main.c ++++ b/sound/pci/ymfpci/ymfpci_main.c +@@ -203,8 +203,8 @@ static void snd_ymfpci_hw_stop(struct snd_ymfpci *chip) + if ((snd_ymfpci_readl(chip, YDSXGR_STATUS) & 2) == 0) + break; + } +- if (atomic_read(&chip->interrupt_sleep_count)) { +- atomic_set(&chip->interrupt_sleep_count, 0); ++ if (atomic_read_unchecked(&chip->interrupt_sleep_count)) { ++ atomic_set_unchecked(&chip->interrupt_sleep_count, 0); + wake_up(&chip->interrupt_sleep); + } + __end: +@@ -788,7 +788,7 @@ static void snd_ymfpci_irq_wait(struct snd_ymfpci *chip) + continue; + init_waitqueue_entry(&wait, current); + add_wait_queue(&chip->interrupt_sleep, &wait); +- atomic_inc(&chip->interrupt_sleep_count); ++ atomic_inc_unchecked(&chip->interrupt_sleep_count); + schedule_timeout_uninterruptible(msecs_to_jiffies(50)); + remove_wait_queue(&chip->interrupt_sleep, &wait); + } +@@ -826,8 +826,8 @@ static irqreturn_t snd_ymfpci_interrupt(int irq, void *dev_id) + snd_ymfpci_writel(chip, YDSXGR_MODE, mode); + spin_unlock(&chip->reg_lock); + +- if (atomic_read(&chip->interrupt_sleep_count)) { +- atomic_set(&chip->interrupt_sleep_count, 0); ++ if (atomic_read_unchecked(&chip->interrupt_sleep_count)) { ++ atomic_set_unchecked(&chip->interrupt_sleep_count, 0); + wake_up(&chip->interrupt_sleep); + } + } +@@ -2398,7 +2398,7 @@ int __devinit snd_ymfpci_create(struct snd_card *card, + spin_lock_init(&chip->reg_lock); + spin_lock_init(&chip->voice_lock); + init_waitqueue_head(&chip->interrupt_sleep); +- atomic_set(&chip->interrupt_sleep_count, 0); ++ atomic_set_unchecked(&chip->interrupt_sleep_count, 0); + chip->card = card; + chip->pci = pci; + chip->irq = -1; +diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c +index 0ad8dca..7186339 100644 +--- a/sound/soc/soc-pcm.c ++++ b/sound/soc/soc-pcm.c +@@ -641,7 +641,7 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) + struct snd_soc_platform *platform = rtd->platform; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; +- struct snd_pcm_ops *soc_pcm_ops = &rtd->ops; ++ snd_pcm_ops_no_const *soc_pcm_ops = &rtd->ops; + struct snd_pcm *pcm; + char new_name[64]; + int ret = 0, playback = 0, capture = 0; +diff --git a/sound/usb/card.h b/sound/usb/card.h +index da5fa1a..113cd02 100644 +--- a/sound/usb/card.h ++++ b/sound/usb/card.h +@@ -45,6 +45,7 @@ struct snd_urb_ops { + int (*prepare_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); + int (*retire_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); + }; ++typedef struct snd_urb_ops __no_const snd_urb_ops_no_const; + + struct snd_usb_substream { + struct snd_usb_stream *stream; +@@ -94,7 +95,7 @@ struct snd_usb_substream { + struct snd_pcm_hw_constraint_list rate_list; /* limited rates */ + spinlock_t lock; + +- struct snd_urb_ops ops; /* callbacks (must be filled at init) */ ++ snd_urb_ops_no_const ops; /* callbacks (must be filled at init) */ + int last_frame_number; /* stored frame number */ + int last_delay; /* stored delay */ + }; +diff --git a/tools/gcc/Makefile b/tools/gcc/Makefile +new file mode 100644 +index 0000000..f4f9986 +--- /dev/null ++++ b/tools/gcc/Makefile +@@ -0,0 +1,41 @@ ++#CC := gcc ++#PLUGIN_SOURCE_FILES := pax_plugin.c ++#PLUGIN_OBJECT_FILES := $(patsubst %.c,%.o,$(PLUGIN_SOURCE_FILES)) ++GCCPLUGINS_DIR := $(shell $(CC) -print-file-name=plugin) ++#CFLAGS += -I$(GCCPLUGINS_DIR)/include -fPIC -O2 -Wall -W -std=gnu99 ++ ++ifeq ($(PLUGINCC),$(HOSTCC)) ++HOSTLIBS := hostlibs ++HOST_EXTRACFLAGS += -I$(GCCPLUGINS_DIR)/include -I$(GCCPLUGINS_DIR)/include/c-family -std=gnu99 -ggdb ++else ++HOSTLIBS := hostcxxlibs ++HOST_EXTRACXXFLAGS += -I$(GCCPLUGINS_DIR)/include -I$(GCCPLUGINS_DIR)/include/c-family -std=gnu++98 -ggdb -Wno-unused-parameter ++endif ++ ++$(HOSTLIBS)-y := constify_plugin.so ++$(HOSTLIBS)-$(CONFIG_PAX_MEMORY_STACKLEAK) += stackleak_plugin.so ++$(HOSTLIBS)-$(CONFIG_KALLOCSTAT_PLUGIN) += kallocstat_plugin.so ++$(HOSTLIBS)-$(CONFIG_PAX_KERNEXEC_PLUGIN) += kernexec_plugin.so ++$(HOSTLIBS)-$(CONFIG_CHECKER_PLUGIN) += checker_plugin.so ++$(HOSTLIBS)-y += colorize_plugin.so ++$(HOSTLIBS)-$(CONFIG_PAX_SIZE_OVERFLOW) += size_overflow_plugin.so ++ ++always := $($(HOSTLIBS)-y) ++ ++constify_plugin-objs := constify_plugin.o ++stackleak_plugin-objs := stackleak_plugin.o ++kallocstat_plugin-objs := kallocstat_plugin.o ++kernexec_plugin-objs := kernexec_plugin.o ++checker_plugin-objs := checker_plugin.o ++colorize_plugin-objs := colorize_plugin.o ++size_overflow_plugin-objs := size_overflow_plugin.o ++ ++$(obj)/size_overflow_plugin.o: $(objtree)/$(obj)/size_overflow_hash.h ++ ++quiet_cmd_build_size_overflow_hash = GENHASH $@ ++ cmd_build_size_overflow_hash = \ ++ $(CONFIG_SHELL) $(srctree)/$(src)/generate_size_overflow_hash.sh -d $< -o $@ ++$(objtree)/$(obj)/size_overflow_hash.h: $(src)/size_overflow_hash.data FORCE ++ $(call if_changed,build_size_overflow_hash) ++ ++targets += size_overflow_hash.h +diff --git a/tools/gcc/checker_plugin.c b/tools/gcc/checker_plugin.c +new file mode 100644 +index 0000000..d41b5af +--- /dev/null ++++ b/tools/gcc/checker_plugin.c +@@ -0,0 +1,171 @@ ++/* ++ * Copyright 2011 by the PaX Team <pageexec@freemail.hu> ++ * Licensed under the GPL v2 ++ * ++ * Note: the choice of the license means that the compilation process is ++ * NOT 'eligible' as defined by gcc's library exception to the GPL v3, ++ * but for the kernel it doesn't matter since it doesn't link against ++ * any of the gcc libraries ++ * ++ * gcc plugin to implement various sparse (source code checker) features ++ * ++ * TODO: ++ * - define separate __iomem, __percpu and __rcu address spaces (lots of code to patch) ++ * ++ * BUGS: ++ * - none known ++ */ ++#include "gcc-plugin.h" ++#include "config.h" ++#include "system.h" ++#include "coretypes.h" ++#include "tree.h" ++#include "tree-pass.h" ++#include "flags.h" ++#include "intl.h" ++#include "toplev.h" ++#include "plugin.h" ++//#include "expr.h" where are you... ++#include "diagnostic.h" ++#include "plugin-version.h" ++#include "tm.h" ++#include "function.h" ++#include "basic-block.h" ++#include "gimple.h" ++#include "rtl.h" ++#include "emit-rtl.h" ++#include "tree-flow.h" ++#include "target.h" ++ ++extern void c_register_addr_space (const char *str, addr_space_t as); ++extern enum machine_mode default_addr_space_pointer_mode (addr_space_t); ++extern enum machine_mode default_addr_space_address_mode (addr_space_t); ++extern bool default_addr_space_valid_pointer_mode(enum machine_mode mode, addr_space_t as); ++extern bool default_addr_space_legitimate_address_p(enum machine_mode mode, rtx mem, bool strict, addr_space_t as); ++extern rtx default_addr_space_legitimize_address(rtx x, rtx oldx, enum machine_mode mode, addr_space_t as); ++ ++extern void print_gimple_stmt(FILE *, gimple, int, int); ++extern rtx emit_move_insn(rtx x, rtx y); ++ ++int plugin_is_GPL_compatible; ++ ++static struct plugin_info checker_plugin_info = { ++ .version = "201111150100", ++}; ++ ++#define ADDR_SPACE_KERNEL 0 ++#define ADDR_SPACE_FORCE_KERNEL 1 ++#define ADDR_SPACE_USER 2 ++#define ADDR_SPACE_FORCE_USER 3 ++#define ADDR_SPACE_IOMEM 0 ++#define ADDR_SPACE_FORCE_IOMEM 0 ++#define ADDR_SPACE_PERCPU 0 ++#define ADDR_SPACE_FORCE_PERCPU 0 ++#define ADDR_SPACE_RCU 0 ++#define ADDR_SPACE_FORCE_RCU 0 ++ ++static enum machine_mode checker_addr_space_pointer_mode(addr_space_t addrspace) ++{ ++ return default_addr_space_pointer_mode(ADDR_SPACE_GENERIC); ++} ++ ++static enum machine_mode checker_addr_space_address_mode(addr_space_t addrspace) ++{ ++ return default_addr_space_address_mode(ADDR_SPACE_GENERIC); ++} ++ ++static bool checker_addr_space_valid_pointer_mode(enum machine_mode mode, addr_space_t as) ++{ ++ return default_addr_space_valid_pointer_mode(mode, as); ++} ++ ++static bool checker_addr_space_legitimate_address_p(enum machine_mode mode, rtx mem, bool strict, addr_space_t as) ++{ ++ return default_addr_space_legitimate_address_p(mode, mem, strict, ADDR_SPACE_GENERIC); ++} ++ ++static rtx checker_addr_space_legitimize_address(rtx x, rtx oldx, enum machine_mode mode, addr_space_t as) ++{ ++ return default_addr_space_legitimize_address(x, oldx, mode, as); ++} ++ ++static bool checker_addr_space_subset_p(addr_space_t subset, addr_space_t superset) ++{ ++ if (subset == ADDR_SPACE_FORCE_KERNEL && superset == ADDR_SPACE_KERNEL) ++ return true; ++ ++ if (subset == ADDR_SPACE_FORCE_USER && superset == ADDR_SPACE_USER) ++ return true; ++ ++ if (subset == ADDR_SPACE_FORCE_IOMEM && superset == ADDR_SPACE_IOMEM) ++ return true; ++ ++ if (subset == ADDR_SPACE_KERNEL && superset == ADDR_SPACE_FORCE_USER) ++ return true; ++ ++ if (subset == ADDR_SPACE_KERNEL && superset == ADDR_SPACE_FORCE_IOMEM) ++ return true; ++ ++ if (subset == ADDR_SPACE_USER && superset == ADDR_SPACE_FORCE_KERNEL) ++ return true; ++ ++ if (subset == ADDR_SPACE_IOMEM && superset == ADDR_SPACE_FORCE_KERNEL) ++ return true; ++ ++ return subset == superset; ++} ++ ++static rtx checker_addr_space_convert(rtx op, tree from_type, tree to_type) ++{ ++// addr_space_t from_as = TYPE_ADDR_SPACE(TREE_TYPE(from_type)); ++// addr_space_t to_as = TYPE_ADDR_SPACE(TREE_TYPE(to_type)); ++ ++ return op; ++} ++ ++static void register_checker_address_spaces(void *event_data, void *data) ++{ ++ c_register_addr_space("__kernel", ADDR_SPACE_KERNEL); ++ c_register_addr_space("__force_kernel", ADDR_SPACE_FORCE_KERNEL); ++ c_register_addr_space("__user", ADDR_SPACE_USER); ++ c_register_addr_space("__force_user", ADDR_SPACE_FORCE_USER); ++// c_register_addr_space("__iomem", ADDR_SPACE_IOMEM); ++// c_register_addr_space("__force_iomem", ADDR_SPACE_FORCE_IOMEM); ++// c_register_addr_space("__percpu", ADDR_SPACE_PERCPU); ++// c_register_addr_space("__force_percpu", ADDR_SPACE_FORCE_PERCPU); ++// c_register_addr_space("__rcu", ADDR_SPACE_RCU); ++// c_register_addr_space("__force_rcu", ADDR_SPACE_FORCE_RCU); ++ ++ targetm.addr_space.pointer_mode = checker_addr_space_pointer_mode; ++ targetm.addr_space.address_mode = checker_addr_space_address_mode; ++ targetm.addr_space.valid_pointer_mode = checker_addr_space_valid_pointer_mode; ++ targetm.addr_space.legitimate_address_p = checker_addr_space_legitimate_address_p; ++// targetm.addr_space.legitimize_address = checker_addr_space_legitimize_address; ++ targetm.addr_space.subset_p = checker_addr_space_subset_p; ++ targetm.addr_space.convert = checker_addr_space_convert; ++} ++ ++int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version) ++{ ++ const char * const plugin_name = plugin_info->base_name; ++ const int argc = plugin_info->argc; ++ const struct plugin_argument * const argv = plugin_info->argv; ++ int i; ++ ++ if (!plugin_default_version_check(version, &gcc_version)) { ++ error(G_("incompatible gcc/plugin versions")); ++ return 1; ++ } ++ ++ register_callback(plugin_name, PLUGIN_INFO, NULL, &checker_plugin_info); ++ ++ for (i = 0; i < argc; ++i) ++ error(G_("unkown option '-fplugin-arg-%s-%s'"), plugin_name, argv[i].key); ++ ++ if (TARGET_64BIT == 0) ++ return 0; ++ ++ register_callback(plugin_name, PLUGIN_PRAGMAS, register_checker_address_spaces, NULL); ++ ++ return 0; ++} +diff --git a/tools/gcc/colorize_plugin.c b/tools/gcc/colorize_plugin.c +new file mode 100644 +index 0000000..7a5e311 +--- /dev/null ++++ b/tools/gcc/colorize_plugin.c +@@ -0,0 +1,148 @@ ++/* ++ * Copyright 2012 by PaX Team <pageexec@freemail.hu> ++ * Licensed under the GPL v2 ++ * ++ * Note: the choice of the license means that the compilation process is ++ * NOT 'eligible' as defined by gcc's library exception to the GPL v3, ++ * but for the kernel it doesn't matter since it doesn't link against ++ * any of the gcc libraries ++ * ++ * gcc plugin to colorize diagnostic output ++ * ++ */ ++ ++#include "gcc-plugin.h" ++#include "config.h" ++#include "system.h" ++#include "coretypes.h" ++#include "tree.h" ++#include "tree-pass.h" ++#include "flags.h" ++#include "intl.h" ++#include "toplev.h" ++#include "plugin.h" ++#include "diagnostic.h" ++#include "plugin-version.h" ++#include "tm.h" ++ ++int plugin_is_GPL_compatible; ++ ++static struct plugin_info colorize_plugin_info = { ++ .version = "201203092200", ++ .help = NULL, ++}; ++ ++#define GREEN "\033[32m\033[2m" ++#define LIGHTGREEN "\033[32m\033[1m" ++#define YELLOW "\033[33m\033[2m" ++#define LIGHTYELLOW "\033[33m\033[1m" ++#define RED "\033[31m\033[2m" ++#define LIGHTRED "\033[31m\033[1m" ++#define BLUE "\033[34m\033[2m" ++#define LIGHTBLUE "\033[34m\033[1m" ++#define BRIGHT "\033[m\033[1m" ++#define NORMAL "\033[m" ++ ++static diagnostic_starter_fn old_starter; ++static diagnostic_finalizer_fn old_finalizer; ++ ++static void start_colorize(diagnostic_context *context, diagnostic_info *diagnostic) ++{ ++ const char *color; ++ char *newprefix; ++ ++ switch (diagnostic->kind) { ++ case DK_NOTE: ++ color = LIGHTBLUE; ++ break; ++ ++ case DK_PEDWARN: ++ case DK_WARNING: ++ color = LIGHTYELLOW; ++ break; ++ ++ case DK_ERROR: ++ case DK_FATAL: ++ case DK_ICE: ++ case DK_PERMERROR: ++ case DK_SORRY: ++ color = LIGHTRED; ++ break; ++ ++ default: ++ color = NORMAL; ++ } ++ ++ old_starter(context, diagnostic); ++ if (-1 == asprintf(&newprefix, "%s%s" NORMAL, color, context->printer->prefix)) ++ return; ++ pp_destroy_prefix(context->printer); ++ pp_set_prefix(context->printer, newprefix); ++} ++ ++static void finalize_colorize(diagnostic_context *context, diagnostic_info *diagnostic) ++{ ++ old_finalizer(context, diagnostic); ++} ++ ++static void colorize_arm(void) ++{ ++ old_starter = diagnostic_starter(global_dc); ++ old_finalizer = diagnostic_finalizer(global_dc); ++ ++ diagnostic_starter(global_dc) = start_colorize; ++ diagnostic_finalizer(global_dc) = finalize_colorize; ++} ++ ++static unsigned int execute_colorize_rearm(void) ++{ ++ if (diagnostic_starter(global_dc) == start_colorize) ++ return 0; ++ ++ colorize_arm(); ++ return 0; ++} ++ ++struct simple_ipa_opt_pass pass_ipa_colorize_rearm = { ++ .pass = { ++ .type = SIMPLE_IPA_PASS, ++ .name = "colorize_rearm", ++ .gate = NULL, ++ .execute = execute_colorize_rearm, ++ .sub = NULL, ++ .next = NULL, ++ .static_pass_number = 0, ++ .tv_id = TV_NONE, ++ .properties_required = 0, ++ .properties_provided = 0, ++ .properties_destroyed = 0, ++ .todo_flags_start = 0, ++ .todo_flags_finish = 0 ++ } ++}; ++ ++static void colorize_start_unit(void *gcc_data, void *user_data) ++{ ++ colorize_arm(); ++} ++ ++int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version) ++{ ++ const char * const plugin_name = plugin_info->base_name; ++ struct register_pass_info colorize_rearm_pass_info = { ++ .pass = &pass_ipa_colorize_rearm.pass, ++ .reference_pass_name = "*free_lang_data", ++ .ref_pass_instance_number = 0, ++ .pos_op = PASS_POS_INSERT_AFTER ++ }; ++ ++ if (!plugin_default_version_check(version, &gcc_version)) { ++ error(G_("incompatible gcc/plugin versions")); ++ return 1; ++ } ++ ++ register_callback(plugin_name, PLUGIN_INFO, NULL, &colorize_plugin_info); ++ register_callback(plugin_name, PLUGIN_START_UNIT, &colorize_start_unit, NULL); ++ register_callback(plugin_name, PLUGIN_PASS_MANAGER_SETUP, NULL, &colorize_rearm_pass_info); ++ return 0; ++} +diff --git a/tools/gcc/constify_plugin.c b/tools/gcc/constify_plugin.c +new file mode 100644 +index 0000000..89b7f56 +--- /dev/null ++++ b/tools/gcc/constify_plugin.c +@@ -0,0 +1,328 @@ ++/* ++ * Copyright 2011 by Emese Revfy <re.emese@gmail.com> ++ * Copyright 2011 by PaX Team <pageexec@freemail.hu> ++ * Licensed under the GPL v2, or (at your option) v3 ++ * ++ * This gcc plugin constifies all structures which contain only function pointers or are explicitly marked for constification. ++ * ++ * Homepage: ++ * http://www.grsecurity.net/~ephox/const_plugin/ ++ * ++ * Usage: ++ * $ gcc -I`gcc -print-file-name=plugin`/include -fPIC -shared -O2 -o constify_plugin.so constify_plugin.c ++ * $ gcc -fplugin=constify_plugin.so test.c -O2 ++ */ ++ ++#include "gcc-plugin.h" ++#include "config.h" ++#include "system.h" ++#include "coretypes.h" ++#include "tree.h" ++#include "tree-pass.h" ++#include "flags.h" ++#include "intl.h" ++#include "toplev.h" ++#include "plugin.h" ++#include "diagnostic.h" ++#include "plugin-version.h" ++#include "tm.h" ++#include "function.h" ++#include "basic-block.h" ++#include "gimple.h" ++#include "rtl.h" ++#include "emit-rtl.h" ++#include "tree-flow.h" ++ ++#define C_TYPE_FIELDS_READONLY(TYPE) TREE_LANG_FLAG_1(TYPE) ++ ++int plugin_is_GPL_compatible; ++ ++static struct plugin_info const_plugin_info = { ++ .version = "201205300030", ++ .help = "no-constify\tturn off constification\n", ++}; ++ ++static void deconstify_tree(tree node); ++ ++static void deconstify_type(tree type) ++{ ++ tree field; ++ ++ for (field = TYPE_FIELDS(type); field; field = TREE_CHAIN(field)) { ++ tree type = TREE_TYPE(field); ++ ++ if (TREE_CODE(type) != RECORD_TYPE && TREE_CODE(type) != UNION_TYPE) ++ continue; ++ if (!TYPE_READONLY(type)) ++ continue; ++ ++ deconstify_tree(field); ++ } ++ TYPE_READONLY(type) = 0; ++ C_TYPE_FIELDS_READONLY(type) = 0; ++} ++ ++static void deconstify_tree(tree node) ++{ ++ tree old_type, new_type, field; ++ ++ old_type = TREE_TYPE(node); ++ ++ gcc_assert(TYPE_READONLY(old_type) && (TYPE_QUALS(old_type) & TYPE_QUAL_CONST)); ++ ++ new_type = build_qualified_type(old_type, TYPE_QUALS(old_type) & ~TYPE_QUAL_CONST); ++ TYPE_FIELDS(new_type) = copy_list(TYPE_FIELDS(new_type)); ++ for (field = TYPE_FIELDS(new_type); field; field = TREE_CHAIN(field)) ++ DECL_FIELD_CONTEXT(field) = new_type; ++ ++ deconstify_type(new_type); ++ ++ TREE_READONLY(node) = 0; ++ TREE_TYPE(node) = new_type; ++} ++ ++static tree handle_no_const_attribute(tree *node, tree name, tree args, int flags, bool *no_add_attrs) ++{ ++ tree type; ++ ++ *no_add_attrs = true; ++ if (TREE_CODE(*node) == FUNCTION_DECL) { ++ error("%qE attribute does not apply to functions", name); ++ return NULL_TREE; ++ } ++ ++ if (TREE_CODE(*node) == VAR_DECL) { ++ error("%qE attribute does not apply to variables", name); ++ return NULL_TREE; ++ } ++ ++ if (TYPE_P(*node)) { ++ if (TREE_CODE(*node) == RECORD_TYPE || TREE_CODE(*node) == UNION_TYPE) ++ *no_add_attrs = false; ++ else ++ error("%qE attribute applies to struct and union types only", name); ++ return NULL_TREE; ++ } ++ ++ type = TREE_TYPE(*node); ++ ++ if (TREE_CODE(type) != RECORD_TYPE && TREE_CODE(type) != UNION_TYPE) { ++ error("%qE attribute applies to struct and union types only", name); ++ return NULL_TREE; ++ } ++ ++ if (lookup_attribute(IDENTIFIER_POINTER(name), TYPE_ATTRIBUTES(type))) { ++ error("%qE attribute is already applied to the type", name); ++ return NULL_TREE; ++ } ++ ++ if (TREE_CODE(*node) == TYPE_DECL && !TYPE_READONLY(type)) { ++ error("%qE attribute used on type that is not constified", name); ++ return NULL_TREE; ++ } ++ ++ if (TREE_CODE(*node) == TYPE_DECL) { ++ deconstify_tree(*node); ++ return NULL_TREE; ++ } ++ ++ return NULL_TREE; ++} ++ ++static void constify_type(tree type) ++{ ++ TYPE_READONLY(type) = 1; ++ C_TYPE_FIELDS_READONLY(type) = 1; ++} ++ ++static tree handle_do_const_attribute(tree *node, tree name, tree args, int flags, bool *no_add_attrs) ++{ ++ *no_add_attrs = true; ++ if (!TYPE_P(*node)) { ++ error("%qE attribute applies to types only", name); ++ return NULL_TREE; ++ } ++ ++ if (TREE_CODE(*node) != RECORD_TYPE && TREE_CODE(*node) != UNION_TYPE) { ++ error("%qE attribute applies to struct and union types only", name); ++ return NULL_TREE; ++ } ++ ++ *no_add_attrs = false; ++ constify_type(*node); ++ return NULL_TREE; ++} ++ ++static struct attribute_spec no_const_attr = { ++ .name = "no_const", ++ .min_length = 0, ++ .max_length = 0, ++ .decl_required = false, ++ .type_required = false, ++ .function_type_required = false, ++ .handler = handle_no_const_attribute, ++#if BUILDING_GCC_VERSION >= 4007 ++ .affects_type_identity = true ++#endif ++}; ++ ++static struct attribute_spec do_const_attr = { ++ .name = "do_const", ++ .min_length = 0, ++ .max_length = 0, ++ .decl_required = false, ++ .type_required = false, ++ .function_type_required = false, ++ .handler = handle_do_const_attribute, ++#if BUILDING_GCC_VERSION >= 4007 ++ .affects_type_identity = true ++#endif ++}; ++ ++static void register_attributes(void *event_data, void *data) ++{ ++ register_attribute(&no_const_attr); ++ register_attribute(&do_const_attr); ++} ++ ++static bool is_fptr(tree field) ++{ ++ tree ptr = TREE_TYPE(field); ++ ++ if (TREE_CODE(ptr) != POINTER_TYPE) ++ return false; ++ ++ return TREE_CODE(TREE_TYPE(ptr)) == FUNCTION_TYPE; ++} ++ ++static bool walk_struct(tree node) ++{ ++ tree field; ++ ++ if (TYPE_FIELDS(node) == NULL_TREE) ++ return false; ++ ++ if (lookup_attribute("no_const", TYPE_ATTRIBUTES(node))) { ++ gcc_assert(!TYPE_READONLY(node)); ++ deconstify_type(node); ++ return false; ++ } ++ ++ for (field = TYPE_FIELDS(node); field; field = TREE_CHAIN(field)) { ++ tree type = TREE_TYPE(field); ++ enum tree_code code = TREE_CODE(type); ++ if (code == RECORD_TYPE || code == UNION_TYPE) { ++ if (!(walk_struct(type))) ++ return false; ++ } else if (!is_fptr(field) && !TREE_READONLY(field)) ++ return false; ++ } ++ return true; ++} ++ ++static void finish_type(void *event_data, void *data) ++{ ++ tree type = (tree)event_data; ++ ++ if (type == NULL_TREE) ++ return; ++ ++ if (TYPE_READONLY(type)) ++ return; ++ ++ if (walk_struct(type)) ++ constify_type(type); ++} ++ ++static unsigned int check_local_variables(void); ++ ++struct gimple_opt_pass pass_local_variable = { ++ { ++ .type = GIMPLE_PASS, ++ .name = "check_local_variables", ++ .gate = NULL, ++ .execute = check_local_variables, ++ .sub = NULL, ++ .next = NULL, ++ .static_pass_number = 0, ++ .tv_id = TV_NONE, ++ .properties_required = 0, ++ .properties_provided = 0, ++ .properties_destroyed = 0, ++ .todo_flags_start = 0, ++ .todo_flags_finish = 0 ++ } ++}; ++ ++static unsigned int check_local_variables(void) ++{ ++ tree var; ++ referenced_var_iterator rvi; ++ ++#if BUILDING_GCC_VERSION == 4005 ++ FOR_EACH_REFERENCED_VAR(var, rvi) { ++#else ++ FOR_EACH_REFERENCED_VAR(cfun, var, rvi) { ++#endif ++ tree type = TREE_TYPE(var); ++ ++ if (!DECL_P(var) || TREE_STATIC(var) || DECL_EXTERNAL(var)) ++ continue; ++ ++ if (TREE_CODE(type) != RECORD_TYPE && TREE_CODE(type) != UNION_TYPE) ++ continue; ++ ++ if (!TYPE_READONLY(type)) ++ continue; ++ ++// if (lookup_attribute("no_const", DECL_ATTRIBUTES(var))) ++// continue; ++ ++// if (lookup_attribute("no_const", TYPE_ATTRIBUTES(type))) ++// continue; ++ ++ if (walk_struct(type)) { ++ error_at(DECL_SOURCE_LOCATION(var), "constified variable %qE cannot be local", var); ++ return 1; ++ } ++ } ++ return 0; ++} ++ ++int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version) ++{ ++ const char * const plugin_name = plugin_info->base_name; ++ const int argc = plugin_info->argc; ++ const struct plugin_argument * const argv = plugin_info->argv; ++ int i; ++ bool constify = true; ++ ++ struct register_pass_info local_variable_pass_info = { ++ .pass = &pass_local_variable.pass, ++ .reference_pass_name = "*referenced_vars", ++ .ref_pass_instance_number = 0, ++ .pos_op = PASS_POS_INSERT_AFTER ++ }; ++ ++ if (!plugin_default_version_check(version, &gcc_version)) { ++ error(G_("incompatible gcc/plugin versions")); ++ return 1; ++ } ++ ++ for (i = 0; i < argc; ++i) { ++ if (!(strcmp(argv[i].key, "no-constify"))) { ++ constify = false; ++ continue; ++ } ++ error(G_("unkown option '-fplugin-arg-%s-%s'"), plugin_name, argv[i].key); ++ } ++ ++ register_callback(plugin_name, PLUGIN_INFO, NULL, &const_plugin_info); ++ if (constify) { ++ register_callback(plugin_name, PLUGIN_FINISH_TYPE, finish_type, NULL); ++ register_callback(plugin_name, PLUGIN_PASS_MANAGER_SETUP, NULL, &local_variable_pass_info); ++ } ++ register_callback(plugin_name, PLUGIN_ATTRIBUTES, register_attributes, NULL); ++ ++ return 0; ++} +diff --git a/tools/gcc/generate_size_overflow_hash.sh b/tools/gcc/generate_size_overflow_hash.sh +new file mode 100644 +index 0000000..a0fe8b2 +--- /dev/null ++++ b/tools/gcc/generate_size_overflow_hash.sh +@@ -0,0 +1,94 @@ ++#!/bin/bash ++ ++# This script generates the hash table (size_overflow_hash.h) for the size_overflow gcc plugin (size_overflow_plugin.c). ++ ++header1="size_overflow_hash.h" ++database="size_overflow_hash.data" ++n=65536 ++ ++usage() { ++cat <<EOF ++usage: $0 options ++OPTIONS: ++ -h|--help help ++ -o header file ++ -d database file ++ -n hash array size ++EOF ++ return 0 ++} ++ ++while true ++do ++ case "$1" in ++ -h|--help) usage && exit 0;; ++ -n) n=$2; shift 2;; ++ -o) header1="$2"; shift 2;; ++ -d) database="$2"; shift 2;; ++ --) shift 1; break ;; ++ *) break ;; ++ esac ++done ++ ++create_defines() { ++ for i in `seq 1 10` ++ do ++ echo -e "#define PARAM"$i" (1U << "$i")" >> "$header1" ++ done ++ echo >> "$header1" ++} ++ ++create_structs () { ++ rm -f "$header1" ++ ++ create_defines ++ ++ cat "$database" | while read data ++ do ++ data_array=($data) ++ struct_hash_name="${data_array[0]}" ++ funcn="${data_array[1]}" ++ params="${data_array[2]}" ++ next="${data_array[5]}" ++ ++ echo "struct size_overflow_hash $struct_hash_name = {" >> "$header1" ++ ++ echo -e "\t.next\t= $next,\n\t.name\t= \"$funcn\"," >> "$header1" ++ echo -en "\t.param\t= " >> "$header1" ++ line= ++ for param_num in ${params//-/ }; ++ do ++ line="${line}PARAM"$param_num"|" ++ done ++ ++ echo -e "${line%?},\n};\n" >> "$header1" ++ done ++} ++ ++create_headers () { ++ echo "struct size_overflow_hash *size_overflow_hash[$n] = {" >> "$header1" ++} ++ ++create_array_elements () { ++ index=0 ++ grep -v "nohasharray" $database | sort -n -k 4 | while read data ++ do ++ data_array=($data) ++ i="${data_array[3]}" ++ hash="${data_array[4]}" ++ while [[ $index -lt $i ]] ++ do ++ echo -e "\t["$index"]\t= NULL," >> "$header1" ++ index=$(($index + 1)) ++ done ++ index=$(($index + 1)) ++ echo -e "\t["$i"]\t= &"$hash"," >> "$header1" ++ done ++ echo '};' >> $header1 ++} ++ ++create_structs ++create_headers ++create_array_elements ++ ++exit 0 +diff --git a/tools/gcc/kallocstat_plugin.c b/tools/gcc/kallocstat_plugin.c +new file mode 100644 +index 0000000..a5eabce +--- /dev/null ++++ b/tools/gcc/kallocstat_plugin.c +@@ -0,0 +1,167 @@ ++/* ++ * Copyright 2011 by the PaX Team <pageexec@freemail.hu> ++ * Licensed under the GPL v2 ++ * ++ * Note: the choice of the license means that the compilation process is ++ * NOT 'eligible' as defined by gcc's library exception to the GPL v3, ++ * but for the kernel it doesn't matter since it doesn't link against ++ * any of the gcc libraries ++ * ++ * gcc plugin to find the distribution of k*alloc sizes ++ * ++ * TODO: ++ * ++ * BUGS: ++ * - none known ++ */ ++#include "gcc-plugin.h" ++#include "config.h" ++#include "system.h" ++#include "coretypes.h" ++#include "tree.h" ++#include "tree-pass.h" ++#include "flags.h" ++#include "intl.h" ++#include "toplev.h" ++#include "plugin.h" ++//#include "expr.h" where are you... ++#include "diagnostic.h" ++#include "plugin-version.h" ++#include "tm.h" ++#include "function.h" ++#include "basic-block.h" ++#include "gimple.h" ++#include "rtl.h" ++#include "emit-rtl.h" ++ ++extern void print_gimple_stmt(FILE *, gimple, int, int); ++ ++int plugin_is_GPL_compatible; ++ ++static const char * const kalloc_functions[] = { ++ "__kmalloc", ++ "kmalloc", ++ "kmalloc_large", ++ "kmalloc_node", ++ "kmalloc_order", ++ "kmalloc_order_trace", ++ "kmalloc_slab", ++ "kzalloc", ++ "kzalloc_node", ++}; ++ ++static struct plugin_info kallocstat_plugin_info = { ++ .version = "201111150100", ++}; ++ ++static unsigned int execute_kallocstat(void); ++ ++static struct gimple_opt_pass kallocstat_pass = { ++ .pass = { ++ .type = GIMPLE_PASS, ++ .name = "kallocstat", ++ .gate = NULL, ++ .execute = execute_kallocstat, ++ .sub = NULL, ++ .next = NULL, ++ .static_pass_number = 0, ++ .tv_id = TV_NONE, ++ .properties_required = 0, ++ .properties_provided = 0, ++ .properties_destroyed = 0, ++ .todo_flags_start = 0, ++ .todo_flags_finish = 0 ++ } ++}; ++ ++static bool is_kalloc(const char *fnname) ++{ ++ size_t i; ++ ++ for (i = 0; i < ARRAY_SIZE(kalloc_functions); i++) ++ if (!strcmp(fnname, kalloc_functions[i])) ++ return true; ++ return false; ++} ++ ++static unsigned int execute_kallocstat(void) ++{ ++ basic_block bb; ++ ++ // 1. loop through BBs and GIMPLE statements ++ FOR_EACH_BB(bb) { ++ gimple_stmt_iterator gsi; ++ for (gsi = gsi_start_bb(bb); !gsi_end_p(gsi); gsi_next(&gsi)) { ++ // gimple match: ++ tree fndecl, size; ++ gimple call_stmt; ++ const char *fnname; ++ ++ // is it a call ++ call_stmt = gsi_stmt(gsi); ++ if (!is_gimple_call(call_stmt)) ++ continue; ++ fndecl = gimple_call_fndecl(call_stmt); ++ if (fndecl == NULL_TREE) ++ continue; ++ if (TREE_CODE(fndecl) != FUNCTION_DECL) ++ continue; ++ ++ // is it a call to k*alloc ++ fnname = IDENTIFIER_POINTER(DECL_NAME(fndecl)); ++ if (!is_kalloc(fnname)) ++ continue; ++ ++ // is the size arg the result of a simple const assignment ++ size = gimple_call_arg(call_stmt, 0); ++ while (true) { ++ gimple def_stmt; ++ expanded_location xloc; ++ size_t size_val; ++ ++ if (TREE_CODE(size) != SSA_NAME) ++ break; ++ def_stmt = SSA_NAME_DEF_STMT(size); ++ if (!def_stmt || !is_gimple_assign(def_stmt)) ++ break; ++ if (gimple_num_ops(def_stmt) != 2) ++ break; ++ size = gimple_assign_rhs1(def_stmt); ++ if (!TREE_CONSTANT(size)) ++ continue; ++ xloc = expand_location(gimple_location(def_stmt)); ++ if (!xloc.file) ++ xloc = expand_location(DECL_SOURCE_LOCATION(current_function_decl)); ++ size_val = TREE_INT_CST_LOW(size); ++ fprintf(stderr, "kallocsize: %8zu %8zx %s %s:%u\n", size_val, size_val, fnname, xloc.file, xloc.line); ++ break; ++ } ++//print_gimple_stmt(stderr, call_stmt, 0, TDF_LINENO); ++//debug_tree(gimple_call_fn(call_stmt)); ++//print_node(stderr, "pax", fndecl, 4); ++ } ++ } ++ ++ return 0; ++} ++ ++int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version) ++{ ++ const char * const plugin_name = plugin_info->base_name; ++ struct register_pass_info kallocstat_pass_info = { ++ .pass = &kallocstat_pass.pass, ++ .reference_pass_name = "ssa", ++ .ref_pass_instance_number = 0, ++ .pos_op = PASS_POS_INSERT_AFTER ++ }; ++ ++ if (!plugin_default_version_check(version, &gcc_version)) { ++ error(G_("incompatible gcc/plugin versions")); ++ return 1; ++ } ++ ++ register_callback(plugin_name, PLUGIN_INFO, NULL, &kallocstat_plugin_info); ++ register_callback(plugin_name, PLUGIN_PASS_MANAGER_SETUP, NULL, &kallocstat_pass_info); ++ ++ return 0; ++} +diff --git a/tools/gcc/kernexec_plugin.c b/tools/gcc/kernexec_plugin.c +new file mode 100644 +index 0000000..d8a8da2 +--- /dev/null ++++ b/tools/gcc/kernexec_plugin.c +@@ -0,0 +1,427 @@ ++/* ++ * Copyright 2011 by the PaX Team <pageexec@freemail.hu> ++ * Licensed under the GPL v2 ++ * ++ * Note: the choice of the license means that the compilation process is ++ * NOT 'eligible' as defined by gcc's library exception to the GPL v3, ++ * but for the kernel it doesn't matter since it doesn't link against ++ * any of the gcc libraries ++ * ++ * gcc plugin to make KERNEXEC/amd64 almost as good as it is on i386 ++ * ++ * TODO: ++ * ++ * BUGS: ++ * - none known ++ */ ++#include "gcc-plugin.h" ++#include "config.h" ++#include "system.h" ++#include "coretypes.h" ++#include "tree.h" ++#include "tree-pass.h" ++#include "flags.h" ++#include "intl.h" ++#include "toplev.h" ++#include "plugin.h" ++//#include "expr.h" where are you... ++#include "diagnostic.h" ++#include "plugin-version.h" ++#include "tm.h" ++#include "function.h" ++#include "basic-block.h" ++#include "gimple.h" ++#include "rtl.h" ++#include "emit-rtl.h" ++#include "tree-flow.h" ++ ++extern void print_gimple_stmt(FILE *, gimple, int, int); ++extern rtx emit_move_insn(rtx x, rtx y); ++ ++int plugin_is_GPL_compatible; ++ ++static struct plugin_info kernexec_plugin_info = { ++ .version = "201111291120", ++ .help = "method=[bts|or]\tinstrumentation method\n" ++}; ++ ++static unsigned int execute_kernexec_reload(void); ++static unsigned int execute_kernexec_fptr(void); ++static unsigned int execute_kernexec_retaddr(void); ++static bool kernexec_cmodel_check(void); ++ ++static void (*kernexec_instrument_fptr)(gimple_stmt_iterator *); ++static void (*kernexec_instrument_retaddr)(rtx); ++ ++static struct gimple_opt_pass kernexec_reload_pass = { ++ .pass = { ++ .type = GIMPLE_PASS, ++ .name = "kernexec_reload", ++ .gate = kernexec_cmodel_check, ++ .execute = execute_kernexec_reload, ++ .sub = NULL, ++ .next = NULL, ++ .static_pass_number = 0, ++ .tv_id = TV_NONE, ++ .properties_required = 0, ++ .properties_provided = 0, ++ .properties_destroyed = 0, ++ .todo_flags_start = 0, ++ .todo_flags_finish = TODO_verify_ssa | TODO_verify_stmts | TODO_dump_func | TODO_remove_unused_locals | TODO_update_ssa_no_phi ++ } ++}; ++ ++static struct gimple_opt_pass kernexec_fptr_pass = { ++ .pass = { ++ .type = GIMPLE_PASS, ++ .name = "kernexec_fptr", ++ .gate = kernexec_cmodel_check, ++ .execute = execute_kernexec_fptr, ++ .sub = NULL, ++ .next = NULL, ++ .static_pass_number = 0, ++ .tv_id = TV_NONE, ++ .properties_required = 0, ++ .properties_provided = 0, ++ .properties_destroyed = 0, ++ .todo_flags_start = 0, ++ .todo_flags_finish = TODO_verify_ssa | TODO_verify_stmts | TODO_dump_func | TODO_remove_unused_locals | TODO_update_ssa_no_phi ++ } ++}; ++ ++static struct rtl_opt_pass kernexec_retaddr_pass = { ++ .pass = { ++ .type = RTL_PASS, ++ .name = "kernexec_retaddr", ++ .gate = kernexec_cmodel_check, ++ .execute = execute_kernexec_retaddr, ++ .sub = NULL, ++ .next = NULL, ++ .static_pass_number = 0, ++ .tv_id = TV_NONE, ++ .properties_required = 0, ++ .properties_provided = 0, ++ .properties_destroyed = 0, ++ .todo_flags_start = 0, ++ .todo_flags_finish = TODO_dump_func | TODO_ggc_collect ++ } ++}; ++ ++static bool kernexec_cmodel_check(void) ++{ ++ tree section; ++ ++ if (ix86_cmodel != CM_KERNEL) ++ return false; ++ ++ section = lookup_attribute("section", DECL_ATTRIBUTES(current_function_decl)); ++ if (!section || !TREE_VALUE(section)) ++ return true; ++ ++ section = TREE_VALUE(TREE_VALUE(section)); ++ if (strncmp(TREE_STRING_POINTER(section), ".vsyscall_", 10)) ++ return true; ++ ++ return false; ++} ++ ++/* ++ * add special KERNEXEC instrumentation: reload %r10 after it has been clobbered ++ */ ++static void kernexec_reload_fptr_mask(gimple_stmt_iterator *gsi) ++{ ++ gimple asm_movabs_stmt; ++ ++ // build asm volatile("movabs $0x8000000000000000, %%r10\n\t" : : : ); ++ asm_movabs_stmt = gimple_build_asm_vec("movabs $0x8000000000000000, %%r10\n\t", NULL, NULL, NULL, NULL); ++ gimple_asm_set_volatile(asm_movabs_stmt, true); ++ gsi_insert_after(gsi, asm_movabs_stmt, GSI_CONTINUE_LINKING); ++ update_stmt(asm_movabs_stmt); ++} ++ ++/* ++ * find all asm() stmts that clobber r10 and add a reload of r10 ++ */ ++static unsigned int execute_kernexec_reload(void) ++{ ++ basic_block bb; ++ ++ // 1. loop through BBs and GIMPLE statements ++ FOR_EACH_BB(bb) { ++ gimple_stmt_iterator gsi; ++ ++ for (gsi = gsi_start_bb(bb); !gsi_end_p(gsi); gsi_next(&gsi)) { ++ // gimple match: __asm__ ("" : : : "r10"); ++ gimple asm_stmt; ++ size_t nclobbers; ++ ++ // is it an asm ... ++ asm_stmt = gsi_stmt(gsi); ++ if (gimple_code(asm_stmt) != GIMPLE_ASM) ++ continue; ++ ++ // ... clobbering r10 ++ nclobbers = gimple_asm_nclobbers(asm_stmt); ++ while (nclobbers--) { ++ tree op = gimple_asm_clobber_op(asm_stmt, nclobbers); ++ if (strcmp(TREE_STRING_POINTER(TREE_VALUE(op)), "r10")) ++ continue; ++ kernexec_reload_fptr_mask(&gsi); ++//print_gimple_stmt(stderr, asm_stmt, 0, TDF_LINENO); ++ break; ++ } ++ } ++ } ++ ++ return 0; ++} ++ ++/* ++ * add special KERNEXEC instrumentation: force MSB of fptr to 1, which will produce ++ * a non-canonical address from a userland ptr and will just trigger a GPF on dereference ++ */ ++static void kernexec_instrument_fptr_bts(gimple_stmt_iterator *gsi) ++{ ++ gimple assign_intptr, assign_new_fptr, call_stmt; ++ tree intptr, old_fptr, new_fptr, kernexec_mask; ++ ++ call_stmt = gsi_stmt(*gsi); ++ old_fptr = gimple_call_fn(call_stmt); ++ ++ // create temporary unsigned long variable used for bitops and cast fptr to it ++ intptr = create_tmp_var(long_unsigned_type_node, "kernexec_bts"); ++ add_referenced_var(intptr); ++ mark_sym_for_renaming(intptr); ++ assign_intptr = gimple_build_assign(intptr, fold_convert(long_unsigned_type_node, old_fptr)); ++ gsi_insert_before(gsi, assign_intptr, GSI_SAME_STMT); ++ update_stmt(assign_intptr); ++ ++ // apply logical or to temporary unsigned long and bitmask ++ kernexec_mask = build_int_cstu(long_long_unsigned_type_node, 0x8000000000000000LL); ++// kernexec_mask = build_int_cstu(long_long_unsigned_type_node, 0xffffffff80000000LL); ++ assign_intptr = gimple_build_assign(intptr, fold_build2(BIT_IOR_EXPR, long_long_unsigned_type_node, intptr, kernexec_mask)); ++ gsi_insert_before(gsi, assign_intptr, GSI_SAME_STMT); ++ update_stmt(assign_intptr); ++ ++ // cast temporary unsigned long back to a temporary fptr variable ++ new_fptr = create_tmp_var(TREE_TYPE(old_fptr), "kernexec_fptr"); ++ add_referenced_var(new_fptr); ++ mark_sym_for_renaming(new_fptr); ++ assign_new_fptr = gimple_build_assign(new_fptr, fold_convert(TREE_TYPE(old_fptr), intptr)); ++ gsi_insert_before(gsi, assign_new_fptr, GSI_SAME_STMT); ++ update_stmt(assign_new_fptr); ++ ++ // replace call stmt fn with the new fptr ++ gimple_call_set_fn(call_stmt, new_fptr); ++ update_stmt(call_stmt); ++} ++ ++static void kernexec_instrument_fptr_or(gimple_stmt_iterator *gsi) ++{ ++ gimple asm_or_stmt, call_stmt; ++ tree old_fptr, new_fptr, input, output; ++ VEC(tree, gc) *inputs = NULL; ++ VEC(tree, gc) *outputs = NULL; ++ ++ call_stmt = gsi_stmt(*gsi); ++ old_fptr = gimple_call_fn(call_stmt); ++ ++ // create temporary fptr variable ++ new_fptr = create_tmp_var(TREE_TYPE(old_fptr), "kernexec_or"); ++ add_referenced_var(new_fptr); ++ mark_sym_for_renaming(new_fptr); ++ ++ // build asm volatile("orq %%r10, %0\n\t" : "=r"(new_fptr) : "0"(old_fptr)); ++ input = build_tree_list(NULL_TREE, build_string(2, "0")); ++ input = chainon(NULL_TREE, build_tree_list(input, old_fptr)); ++ output = build_tree_list(NULL_TREE, build_string(3, "=r")); ++ output = chainon(NULL_TREE, build_tree_list(output, new_fptr)); ++ VEC_safe_push(tree, gc, inputs, input); ++ VEC_safe_push(tree, gc, outputs, output); ++ asm_or_stmt = gimple_build_asm_vec("orq %%r10, %0\n\t", inputs, outputs, NULL, NULL); ++ gimple_asm_set_volatile(asm_or_stmt, true); ++ gsi_insert_before(gsi, asm_or_stmt, GSI_SAME_STMT); ++ update_stmt(asm_or_stmt); ++ ++ // replace call stmt fn with the new fptr ++ gimple_call_set_fn(call_stmt, new_fptr); ++ update_stmt(call_stmt); ++} ++ ++/* ++ * find all C level function pointer dereferences and forcibly set the highest bit of the pointer ++ */ ++static unsigned int execute_kernexec_fptr(void) ++{ ++ basic_block bb; ++ ++ // 1. loop through BBs and GIMPLE statements ++ FOR_EACH_BB(bb) { ++ gimple_stmt_iterator gsi; ++ ++ for (gsi = gsi_start_bb(bb); !gsi_end_p(gsi); gsi_next(&gsi)) { ++ // gimple match: h_1 = get_fptr (); D.2709_3 = h_1 (x_2(D)); ++ tree fn; ++ gimple call_stmt; ++ ++ // is it a call ... ++ call_stmt = gsi_stmt(gsi); ++ if (!is_gimple_call(call_stmt)) ++ continue; ++ fn = gimple_call_fn(call_stmt); ++ if (TREE_CODE(fn) == ADDR_EXPR) ++ continue; ++ if (TREE_CODE(fn) != SSA_NAME) ++ gcc_unreachable(); ++ ++ // ... through a function pointer ++ fn = SSA_NAME_VAR(fn); ++ if (TREE_CODE(fn) != VAR_DECL && TREE_CODE(fn) != PARM_DECL) ++ continue; ++ fn = TREE_TYPE(fn); ++ if (TREE_CODE(fn) != POINTER_TYPE) ++ continue; ++ fn = TREE_TYPE(fn); ++ if (TREE_CODE(fn) != FUNCTION_TYPE) ++ continue; ++ ++ kernexec_instrument_fptr(&gsi); ++ ++//debug_tree(gimple_call_fn(call_stmt)); ++//print_gimple_stmt(stderr, call_stmt, 0, TDF_LINENO); ++ } ++ } ++ ++ return 0; ++} ++ ++// add special KERNEXEC instrumentation: btsq $63,(%rsp) just before retn ++static void kernexec_instrument_retaddr_bts(rtx insn) ++{ ++ rtx btsq; ++ rtvec argvec, constraintvec, labelvec; ++ int line; ++ ++ // create asm volatile("btsq $63,(%%rsp)":::) ++ argvec = rtvec_alloc(0); ++ constraintvec = rtvec_alloc(0); ++ labelvec = rtvec_alloc(0); ++ line = expand_location(RTL_LOCATION(insn)).line; ++ btsq = gen_rtx_ASM_OPERANDS(VOIDmode, "btsq $63,(%%rsp)", empty_string, 0, argvec, constraintvec, labelvec, line); ++ MEM_VOLATILE_P(btsq) = 1; ++// RTX_FRAME_RELATED_P(btsq) = 1; // not for ASM_OPERANDS ++ emit_insn_before(btsq, insn); ++} ++ ++// add special KERNEXEC instrumentation: orq %r10,(%rsp) just before retn ++static void kernexec_instrument_retaddr_or(rtx insn) ++{ ++ rtx orq; ++ rtvec argvec, constraintvec, labelvec; ++ int line; ++ ++ // create asm volatile("orq %%r10,(%%rsp)":::) ++ argvec = rtvec_alloc(0); ++ constraintvec = rtvec_alloc(0); ++ labelvec = rtvec_alloc(0); ++ line = expand_location(RTL_LOCATION(insn)).line; ++ orq = gen_rtx_ASM_OPERANDS(VOIDmode, "orq %%r10,(%%rsp)", empty_string, 0, argvec, constraintvec, labelvec, line); ++ MEM_VOLATILE_P(orq) = 1; ++// RTX_FRAME_RELATED_P(orq) = 1; // not for ASM_OPERANDS ++ emit_insn_before(orq, insn); ++} ++ ++/* ++ * find all asm level function returns and forcibly set the highest bit of the return address ++ */ ++static unsigned int execute_kernexec_retaddr(void) ++{ ++ rtx insn; ++ ++ // 1. find function returns ++ for (insn = get_insns(); insn; insn = NEXT_INSN(insn)) { ++ // rtl match: (jump_insn 41 40 42 2 (return) fptr.c:42 634 {return_internal} (nil)) ++ // (jump_insn 12 9 11 2 (parallel [ (return) (unspec [ (0) ] UNSPEC_REP) ]) fptr.c:46 635 {return_internal_long} (nil)) ++ rtx body; ++ ++ // is it a retn ++ if (!JUMP_P(insn)) ++ continue; ++ body = PATTERN(insn); ++ if (GET_CODE(body) == PARALLEL) ++ body = XVECEXP(body, 0, 0); ++ if (GET_CODE(body) != RETURN) ++ continue; ++ kernexec_instrument_retaddr(insn); ++ } ++ ++// print_simple_rtl(stderr, get_insns()); ++// print_rtl(stderr, get_insns()); ++ ++ return 0; ++} ++ ++int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version) ++{ ++ const char * const plugin_name = plugin_info->base_name; ++ const int argc = plugin_info->argc; ++ const struct plugin_argument * const argv = plugin_info->argv; ++ int i; ++ struct register_pass_info kernexec_reload_pass_info = { ++ .pass = &kernexec_reload_pass.pass, ++ .reference_pass_name = "ssa", ++ .ref_pass_instance_number = 0, ++ .pos_op = PASS_POS_INSERT_AFTER ++ }; ++ struct register_pass_info kernexec_fptr_pass_info = { ++ .pass = &kernexec_fptr_pass.pass, ++ .reference_pass_name = "ssa", ++ .ref_pass_instance_number = 0, ++ .pos_op = PASS_POS_INSERT_AFTER ++ }; ++ struct register_pass_info kernexec_retaddr_pass_info = { ++ .pass = &kernexec_retaddr_pass.pass, ++ .reference_pass_name = "pro_and_epilogue", ++ .ref_pass_instance_number = 0, ++ .pos_op = PASS_POS_INSERT_AFTER ++ }; ++ ++ if (!plugin_default_version_check(version, &gcc_version)) { ++ error(G_("incompatible gcc/plugin versions")); ++ return 1; ++ } ++ ++ register_callback(plugin_name, PLUGIN_INFO, NULL, &kernexec_plugin_info); ++ ++ if (TARGET_64BIT == 0) ++ return 0; ++ ++ for (i = 0; i < argc; ++i) { ++ if (!strcmp(argv[i].key, "method")) { ++ if (!argv[i].value) { ++ error(G_("no value supplied for option '-fplugin-arg-%s-%s'"), plugin_name, argv[i].key); ++ continue; ++ } ++ if (!strcmp(argv[i].value, "bts")) { ++ kernexec_instrument_fptr = kernexec_instrument_fptr_bts; ++ kernexec_instrument_retaddr = kernexec_instrument_retaddr_bts; ++ } else if (!strcmp(argv[i].value, "or")) { ++ kernexec_instrument_fptr = kernexec_instrument_fptr_or; ++ kernexec_instrument_retaddr = kernexec_instrument_retaddr_or; ++ fix_register("r10", 1, 1); ++ } else ++ error(G_("invalid option argument '-fplugin-arg-%s-%s=%s'"), plugin_name, argv[i].key, argv[i].value); ++ continue; ++ } ++ error(G_("unkown option '-fplugin-arg-%s-%s'"), plugin_name, argv[i].key); ++ } ++ if (!kernexec_instrument_fptr || !kernexec_instrument_retaddr) ++ error(G_("no instrumentation method was selected via '-fplugin-arg-%s-method'"), plugin_name); ++ ++ if (kernexec_instrument_fptr == kernexec_instrument_fptr_or) ++ register_callback(plugin_name, PLUGIN_PASS_MANAGER_SETUP, NULL, &kernexec_reload_pass_info); ++ register_callback(plugin_name, PLUGIN_PASS_MANAGER_SETUP, NULL, &kernexec_fptr_pass_info); 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b/tools/gcc/size_overflow_plugin.c +@@ -0,0 +1,1204 @@ ++/* ++ * Copyright 2011, 2012 by Emese Revfy <re.emese@gmail.com> ++ * Licensed under the GPL v2, or (at your option) v3 ++ * ++ * Homepage: ++ * http://www.grsecurity.net/~ephox/overflow_plugin/ ++ * ++ * This plugin recomputes expressions of function arguments marked by a size_overflow attribute ++ * with double integer precision (DImode/TImode for 32/64 bit integer types). ++ * The recomputed argument is checked against TYPE_MAX and an event is logged on overflow and the triggering process is killed. ++ * ++ * Usage: ++ * $ gcc -I`gcc -print-file-name=plugin`/include/c-family -I`gcc -print-file-name=plugin`/include -fPIC -shared -O2 -ggdb -Wall -W -Wno-missing-field-initializers -o size_overflow_plugin.so size_overflow_plugin.c ++ * $ gcc -fplugin=size_overflow_plugin.so test.c -O2 ++ */ ++ ++#include "gcc-plugin.h" ++#include "config.h" ++#include "system.h" ++#include "coretypes.h" ++#include "tree.h" ++#include "tree-pass.h" ++#include "intl.h" ++#include "plugin-version.h" ++#include "tm.h" ++#include "toplev.h" ++#include "function.h" ++#include "tree-flow.h" ++#include "plugin.h" ++#include "gimple.h" ++#include "c-common.h" ++#include "diagnostic.h" ++#include "cfgloop.h" ++ ++struct size_overflow_hash { ++ struct size_overflow_hash *next; ++ const char *name; ++ unsigned int param; ++}; ++ ++#include "size_overflow_hash.h" ++ ++#define __unused __attribute__((__unused__)) ++#define NAME(node) IDENTIFIER_POINTER(DECL_NAME(node)) ++#define NAME_LEN(node) IDENTIFIER_LENGTH(DECL_NAME(node)) ++#define BEFORE_STMT true ++#define AFTER_STMT false ++#define CREATE_NEW_VAR NULL_TREE ++#define CODES_LIMIT 32 ++#define MAX_PARAM 10 ++ ++#if BUILDING_GCC_VERSION == 4005 ++#define DECL_CHAIN(NODE) (TREE_CHAIN(DECL_MINIMAL_CHECK(NODE))) ++#endif ++ ++int plugin_is_GPL_compatible; ++void debug_gimple_stmt(gimple gs); ++ ++static tree expand(struct pointer_set_t *visited, bool *potentionally_overflowed, tree var); ++static tree signed_size_overflow_type; ++static tree unsigned_size_overflow_type; ++static tree report_size_overflow_decl; ++static tree const_char_ptr_type_node; ++static unsigned int handle_function(void); ++ ++static struct plugin_info size_overflow_plugin_info = { ++ .version = "20120618beta", ++ .help = "no-size-overflow\tturn off size overflow checking\n", ++}; ++ ++static tree handle_size_overflow_attribute(tree *node, tree __unused name, tree args, int __unused flags, bool *no_add_attrs) ++{ ++ unsigned int arg_count = type_num_arguments(*node); ++ ++ for (; args; args = TREE_CHAIN(args)) { ++ tree position = TREE_VALUE(args); ++ if (TREE_CODE(position) != INTEGER_CST || TREE_INT_CST_HIGH(position) || TREE_INT_CST_LOW(position) < 1 || TREE_INT_CST_LOW(position) > arg_count ) { ++ error("handle_size_overflow_attribute: overflow parameter outside range."); ++ *no_add_attrs = true; ++ } ++ } ++ return NULL_TREE; ++} ++ ++static struct attribute_spec no_size_overflow_attr = { ++ .name = "size_overflow", ++ .min_length = 1, ++ .max_length = -1, ++ .decl_required = false, ++ .type_required = true, ++ .function_type_required = true, ++ .handler = handle_size_overflow_attribute, ++#if BUILDING_GCC_VERSION >= 4007 ++ .affects_type_identity = false ++#endif ++}; ++ ++static void register_attributes(void __unused *event_data, void __unused *data) ++{ ++ register_attribute(&no_size_overflow_attr); ++} ++ ++// http://www.team5150.com/~andrew/noncryptohashzoo2~/CrapWow.html ++static unsigned int CrapWow(const char *key, unsigned int len, unsigned int seed) ++{ ++#define cwfold( a, b, lo, hi ) { p = (unsigned int)(a) * (unsigned long long)(b); lo ^= (unsigned int)p; hi ^= (unsigned int)(p >> 32); } ++#define cwmixa( in ) { cwfold( in, m, k, h ); } ++#define cwmixb( in ) { cwfold( in, n, h, k ); } ++ ++ const unsigned int m = 0x57559429; ++ const unsigned int n = 0x5052acdb; ++ const unsigned int *key4 = (const unsigned int *)key; ++ unsigned int h = len; ++ unsigned int k = len + seed + n; ++ unsigned long long p; ++ ++ while (len >= 8) { ++ cwmixb(key4[0]) cwmixa(key4[1]) key4 += 2; ++ len -= 8; ++ } ++ if (len >= 4) { ++ cwmixb(key4[0]) key4 += 1; ++ len -= 4; ++ } ++ if (len) ++ cwmixa(key4[0] & ((1 << (len * 8)) - 1 )); ++ cwmixb(h ^ (k + n)); ++ return k ^ h; ++ ++#undef cwfold ++#undef cwmixa ++#undef cwmixb ++} ++ ++static inline unsigned int get_hash_num(const char *fndecl, const char *tree_codes, unsigned int len, unsigned int seed) ++{ ++ unsigned int fn = CrapWow(fndecl, strlen(fndecl), seed) & 0xffff; ++ unsigned int codes = CrapWow(tree_codes, len, seed) & 0xffff; ++ return fn ^ codes; ++} ++ ++static inline tree get_original_function_decl(tree fndecl) ++{ ++ if (DECL_ABSTRACT_ORIGIN(fndecl)) ++ return DECL_ABSTRACT_ORIGIN(fndecl); ++ return fndecl; ++} ++ ++static inline gimple get_def_stmt(tree node) ++{ ++ gcc_assert(TREE_CODE(node) == SSA_NAME); ++ return SSA_NAME_DEF_STMT(node); ++} ++ ++static unsigned char get_tree_code(tree type) ++{ ++ switch (TREE_CODE(type)) { ++ case ARRAY_TYPE: ++ return 0; ++ case BOOLEAN_TYPE: ++ return 1; ++ case ENUMERAL_TYPE: ++ return 2; ++ case FUNCTION_TYPE: ++ return 3; ++ case INTEGER_TYPE: ++ return 4; ++ case POINTER_TYPE: ++ return 5; ++ case RECORD_TYPE: ++ return 6; ++ case UNION_TYPE: ++ return 7; ++ case VOID_TYPE: ++ return 8; ++ case REAL_TYPE: ++ return 9; ++ case VECTOR_TYPE: ++ return 10; ++ case REFERENCE_TYPE: ++ return 11; ++ default: ++ debug_tree(type); ++ gcc_unreachable(); ++ } ++} ++ ++static size_t add_type_codes(tree type, unsigned char *tree_codes, size_t len) ++{ ++ gcc_assert(type != NULL_TREE); ++ ++ while (type && len < CODES_LIMIT) { ++ tree_codes[len] = get_tree_code(type); ++ len++; ++ type = TREE_TYPE(type); ++ } ++ return len; ++} ++ ++static unsigned int get_function_decl(tree fndecl, unsigned char *tree_codes) ++{ ++ tree arg, result, type = TREE_TYPE(fndecl); ++ enum tree_code code = TREE_CODE(type); ++ size_t len = 0; ++ ++ gcc_assert(code == FUNCTION_TYPE); ++ ++ arg = TYPE_ARG_TYPES(type); ++ // skip builtins __builtin_constant_p ++ if (!arg && DECL_BUILT_IN(fndecl)) ++ return 0; ++ gcc_assert(arg != NULL_TREE); ++ ++ if (TREE_CODE_CLASS(code) == tcc_type) ++ result = type; ++ else ++ result = DECL_RESULT(fndecl); ++ ++ gcc_assert(result != NULL_TREE); ++ len = add_type_codes(TREE_TYPE(result), tree_codes, len); ++ ++ while (arg && len < CODES_LIMIT) { ++ len = add_type_codes(TREE_VALUE(arg), tree_codes, len); ++ arg = TREE_CHAIN(arg); ++ } ++ ++ gcc_assert(len != 0); ++ return len; ++} ++ ++static struct size_overflow_hash *get_function_hash(tree fndecl) ++{ ++ unsigned int hash; ++ struct size_overflow_hash *entry; ++ unsigned char tree_codes[CODES_LIMIT]; ++ size_t len; ++ const char *func_name = NAME(fndecl); ++ ++ len = get_function_decl(fndecl, tree_codes); ++ if (len == 0) ++ return NULL; ++ ++ hash = get_hash_num(func_name, (const char*) tree_codes, len, 0); ++ ++ entry = size_overflow_hash[hash]; ++ while (entry) { ++ if (!strcmp(entry->name, func_name)) ++ return entry; ++ entry = entry->next; ++ } ++ ++ return NULL; ++} ++ ++static void check_arg_type(tree var) ++{ ++ tree type = TREE_TYPE(var); ++ enum tree_code code = TREE_CODE(type); ++ ++ gcc_assert(code == INTEGER_TYPE || code == ENUMERAL_TYPE || ++ (code == POINTER_TYPE && TREE_CODE(TREE_TYPE(type)) == VOID_TYPE) || ++ (code == POINTER_TYPE && TREE_CODE(TREE_TYPE(type)) == INTEGER_TYPE)); ++} ++ ++static int find_arg_number(tree arg, tree func) ++{ ++ tree var; ++ bool match = false; ++ unsigned int argnum = 1; ++ ++ if (TREE_CODE(arg) == SSA_NAME) ++ arg = SSA_NAME_VAR(arg); ++ ++ for (var = DECL_ARGUMENTS(func); var; var = TREE_CHAIN(var)) { ++ if (strcmp(NAME(arg), NAME(var))) { ++ argnum++; ++ continue; ++ } ++ check_arg_type(var); ++ ++ match = true; ++ break; ++ } ++ if (!match) { ++ warning(0, "find_arg_number: cannot find the %s argument in %s", NAME(arg), NAME(func)); ++ return 0; ++ } ++ return argnum; ++} ++ ++static void print_missing_msg(tree func, unsigned int argnum) ++{ ++ unsigned int new_hash; ++ size_t len; ++ unsigned char tree_codes[CODES_LIMIT]; ++ location_t loc = DECL_SOURCE_LOCATION(func); ++ const char *curfunc = NAME(func); ++ ++ len = get_function_decl(func, tree_codes); ++ new_hash = get_hash_num(curfunc, (const char *) tree_codes, len, 0); ++ inform(loc, "Function %s is missing from the size_overflow hash table +%s+%d+%u+", curfunc, curfunc, argnum, new_hash); ++} ++ ++static void check_missing_attribute(tree arg) ++{ ++ tree type, func = get_original_function_decl(current_function_decl); ++ unsigned int argnum; ++ struct size_overflow_hash *hash; ++ ++ gcc_assert(TREE_CODE(arg) != COMPONENT_REF); ++ ++ type = TREE_TYPE(arg); ++ // skip function pointers ++ if (TREE_CODE(type) == POINTER_TYPE && TREE_CODE(TREE_TYPE(type)) == FUNCTION_TYPE) ++ return; ++ ++ if (lookup_attribute("size_overflow", TYPE_ATTRIBUTES(TREE_TYPE(func)))) ++ return; ++ ++ argnum = find_arg_number(arg, func); ++ if (argnum == 0) ++ return; ++ ++ hash = get_function_hash(func); ++ if (!hash || !(hash->param & (1U << argnum))) ++ print_missing_msg(func, argnum); ++} ++ ++static tree create_new_var(tree type) ++{ ++ tree new_var = create_tmp_var(type, "cicus"); ++ ++ add_referenced_var(new_var); ++ mark_sym_for_renaming(new_var); ++ return new_var; ++} ++ ++static bool is_bool(tree node) ++{ ++ tree type; ++ ++ if (node == NULL_TREE) ++ return false; ++ ++ type = TREE_TYPE(node); ++ if (!INTEGRAL_TYPE_P(type)) ++ return false; ++ if (TREE_CODE(type) == BOOLEAN_TYPE) ++ return true; ++ if (TYPE_PRECISION(type) == 1) ++ return true; ++ return false; ++} ++ ++static tree cast_a_tree(tree type, tree var) ++{ ++ gcc_assert(type != NULL_TREE && var != NULL_TREE); ++ gcc_assert(fold_convertible_p(type, var)); ++ ++ return fold_convert(type, var); ++} ++ ++static tree signed_cast(tree var) ++{ ++ return cast_a_tree(signed_size_overflow_type, var); ++} ++ ++static gimple build_cast_stmt(tree type, tree var, tree new_var, location_t loc) ++{ ++ gimple assign; ++ ++ if (new_var == CREATE_NEW_VAR) ++ new_var = create_new_var(type); ++ ++ assign = gimple_build_assign(new_var, cast_a_tree(type, var)); ++ gimple_set_location(assign, loc); ++ gimple_set_lhs(assign, make_ssa_name(new_var, assign)); ++ ++ return assign; ++} ++ ++static tree create_assign(struct pointer_set_t *visited, bool *potentionally_overflowed, gimple oldstmt, tree rhs1, bool before) ++{ ++ tree oldstmt_rhs1; ++ enum tree_code code; ++ gimple stmt; ++ gimple_stmt_iterator gsi; ++ ++ if (!*potentionally_overflowed) ++ return NULL_TREE; ++ ++ if (rhs1 == NULL_TREE) { ++ debug_gimple_stmt(oldstmt); ++ error("create_assign: rhs1 is NULL_TREE"); ++ gcc_unreachable(); ++ } ++ ++ oldstmt_rhs1 = gimple_assign_rhs1(oldstmt); ++ code = TREE_CODE(oldstmt_rhs1); ++ if (code == PARM_DECL || (code == SSA_NAME && gimple_code(get_def_stmt(oldstmt_rhs1)) == GIMPLE_NOP)) ++ check_missing_attribute(oldstmt_rhs1); ++ ++ stmt = build_cast_stmt(signed_size_overflow_type, rhs1, CREATE_NEW_VAR, gimple_location(oldstmt)); ++ gsi = gsi_for_stmt(oldstmt); ++ if (lookup_stmt_eh_lp(oldstmt) != 0) { ++ basic_block next_bb, cur_bb; ++ edge e; ++ ++ gcc_assert(before == false); ++ gcc_assert(stmt_can_throw_internal(oldstmt)); ++ gcc_assert(gimple_code(oldstmt) == GIMPLE_CALL); ++ gcc_assert(!gsi_end_p(gsi)); ++ ++ cur_bb = gimple_bb(oldstmt); ++ next_bb = cur_bb->next_bb; ++ e = find_edge(cur_bb, next_bb); ++ gcc_assert(e != NULL); ++ gcc_assert(e->flags & EDGE_FALLTHRU); ++ ++ gsi = gsi_after_labels(next_bb); ++ gcc_assert(!gsi_end_p(gsi)); ++ before = true; ++ } ++ if (before) ++ gsi_insert_before(&gsi, stmt, GSI_NEW_STMT); ++ else ++ gsi_insert_after(&gsi, stmt, GSI_NEW_STMT); ++ update_stmt(stmt); ++ pointer_set_insert(visited, oldstmt); ++ return gimple_get_lhs(stmt); ++} ++ ++static tree dup_assign(struct pointer_set_t *visited, bool *potentionally_overflowed, gimple oldstmt, tree rhs1, tree rhs2, tree __unused rhs3) ++{ ++ tree new_var, lhs = gimple_get_lhs(oldstmt); ++ gimple stmt; ++ gimple_stmt_iterator gsi; ++ ++ if (!*potentionally_overflowed) ++ return NULL_TREE; ++ ++ if (gimple_num_ops(oldstmt) != 4 && rhs1 == NULL_TREE) { ++ rhs1 = gimple_assign_rhs1(oldstmt); ++ rhs1 = create_assign(visited, potentionally_overflowed, oldstmt, rhs1, BEFORE_STMT); ++ } ++ if (gimple_num_ops(oldstmt) == 3 && rhs2 == NULL_TREE) { ++ rhs2 = gimple_assign_rhs2(oldstmt); ++ rhs2 = create_assign(visited, potentionally_overflowed, oldstmt, rhs2, BEFORE_STMT); ++ } ++ ++ stmt = gimple_copy(oldstmt); ++ gimple_set_location(stmt, gimple_location(oldstmt)); ++ ++ if (gimple_assign_rhs_code(oldstmt) == WIDEN_MULT_EXPR) ++ gimple_assign_set_rhs_code(stmt, MULT_EXPR); ++ ++ if (is_bool(lhs)) ++ new_var = SSA_NAME_VAR(lhs); ++ else ++ new_var = create_new_var(signed_size_overflow_type); ++ new_var = make_ssa_name(new_var, stmt); ++ gimple_set_lhs(stmt, new_var); ++ ++ if (rhs1 != NULL_TREE) { ++ if (!gimple_assign_cast_p(oldstmt)) ++ rhs1 = signed_cast(rhs1); ++ gimple_assign_set_rhs1(stmt, rhs1); ++ } ++ ++ if (rhs2 != NULL_TREE) ++ gimple_assign_set_rhs2(stmt, rhs2); ++#if BUILDING_GCC_VERSION >= 4007 ++ if (rhs3 != NULL_TREE) ++ gimple_assign_set_rhs3(stmt, rhs3); ++#endif ++ gimple_set_vuse(stmt, gimple_vuse(oldstmt)); ++ gimple_set_vdef(stmt, gimple_vdef(oldstmt)); ++ ++ gsi = gsi_for_stmt(oldstmt); ++ gsi_insert_after(&gsi, stmt, GSI_SAME_STMT); ++ update_stmt(stmt); ++ pointer_set_insert(visited, oldstmt); ++ return gimple_get_lhs(stmt); ++} ++ ++static gimple overflow_create_phi_node(gimple oldstmt, tree var) ++{ ++ basic_block bb; ++ gimple phi; ++ gimple_stmt_iterator gsi = gsi_for_stmt(oldstmt); ++ ++ bb = gsi_bb(gsi); ++ ++ phi = create_phi_node(var, bb); ++ gsi = gsi_last(phi_nodes(bb)); ++ gsi_remove(&gsi, false); ++ ++ gsi = gsi_for_stmt(oldstmt); ++ gsi_insert_after(&gsi, phi, GSI_NEW_STMT); ++ gimple_set_bb(phi, bb); ++ return phi; ++} ++ ++static basic_block create_a_first_bb(void) ++{ ++ basic_block first_bb; ++ ++ first_bb = split_block_after_labels(ENTRY_BLOCK_PTR)->dest; ++ if (dom_info_available_p(CDI_DOMINATORS)) ++ set_immediate_dominator(CDI_DOMINATORS, first_bb, ENTRY_BLOCK_PTR); ++ return first_bb; ++} ++ ++static gimple cast_old_phi_arg(gimple oldstmt, tree arg, tree new_var, unsigned int i) ++{ ++ basic_block bb; ++ gimple newstmt, def_stmt; ++ gimple_stmt_iterator gsi; ++ ++ newstmt = build_cast_stmt(signed_size_overflow_type, arg, new_var, gimple_location(oldstmt)); ++ if (TREE_CODE(arg) == SSA_NAME) { ++ def_stmt = get_def_stmt(arg); ++ if (gimple_code(def_stmt) != GIMPLE_NOP) { ++ gsi = gsi_for_stmt(def_stmt); ++ gsi_insert_after(&gsi, newstmt, GSI_NEW_STMT); ++ return newstmt; ++ } ++ } ++ ++ bb = gimple_phi_arg_edge(oldstmt, i)->src; ++ if (bb->index == 0) ++ bb = create_a_first_bb(); ++ gsi = gsi_after_labels(bb); ++ gsi_insert_before(&gsi, newstmt, GSI_NEW_STMT); ++ return newstmt; ++} ++ ++static gimple handle_new_phi_arg(tree arg, tree new_var, tree new_rhs) ++{ ++ gimple newstmt; ++ gimple_stmt_iterator gsi; ++ void (*gsi_insert)(gimple_stmt_iterator *, gimple, enum gsi_iterator_update); ++ gimple def_newstmt = get_def_stmt(new_rhs); ++ ++ gsi_insert = gsi_insert_after; ++ gsi = gsi_for_stmt(def_newstmt); ++ ++ switch (gimple_code(get_def_stmt(arg))) { ++ case GIMPLE_PHI: ++ newstmt = gimple_build_assign(new_var, new_rhs); ++ gsi = gsi_after_labels(gimple_bb(def_newstmt)); ++ gsi_insert = gsi_insert_before; ++ break; ++ case GIMPLE_ASM: ++ case GIMPLE_CALL: ++ newstmt = gimple_build_assign(new_var, new_rhs); ++ break; ++ case GIMPLE_ASSIGN: ++ newstmt = gimple_build_assign(new_var, gimple_get_lhs(def_newstmt)); ++ break; ++ default: ++ /* unknown gimple_code (handle_build_new_phi_arg) */ ++ gcc_unreachable(); ++ } ++ ++ gimple_set_lhs(newstmt, make_ssa_name(new_var, newstmt)); ++ gsi_insert(&gsi, newstmt, GSI_NEW_STMT); ++ update_stmt(newstmt); ++ return newstmt; ++} ++ ++static tree build_new_phi_arg(struct pointer_set_t *visited, bool *potentionally_overflowed, tree arg, tree new_var) ++{ ++ gimple newstmt; ++ tree new_rhs; ++ ++ new_rhs = expand(visited, potentionally_overflowed, arg); ++ ++ if (new_rhs == NULL_TREE) ++ return NULL_TREE; ++ ++ newstmt = handle_new_phi_arg(arg, new_var, new_rhs); ++ return gimple_get_lhs(newstmt); ++} ++ ++static tree build_new_phi(struct pointer_set_t *visited, bool *potentionally_overflowed, gimple oldstmt) ++{ ++ gimple phi; ++ tree new_var = create_new_var(signed_size_overflow_type); ++ unsigned int i, n = gimple_phi_num_args(oldstmt); ++ ++ pointer_set_insert(visited, oldstmt); ++ phi = overflow_create_phi_node(oldstmt, new_var); ++ for (i = 0; i < n; i++) { ++ tree arg, lhs; ++ ++ arg = gimple_phi_arg_def(oldstmt, i); ++ if (is_gimple_constant(arg)) ++ arg = signed_cast(arg); ++ lhs = build_new_phi_arg(visited, potentionally_overflowed, arg, new_var); ++ if (lhs == NULL_TREE) ++ lhs = gimple_get_lhs(cast_old_phi_arg(oldstmt, arg, new_var, i)); ++ add_phi_arg(phi, lhs, gimple_phi_arg_edge(oldstmt, i), gimple_location(oldstmt)); ++ } ++ ++ update_stmt(phi); ++ return gimple_phi_result(phi); ++} ++ ++static tree handle_unary_rhs(struct pointer_set_t *visited, bool *potentionally_overflowed, tree var) ++{ ++ gimple def_stmt = get_def_stmt(var); ++ tree new_rhs1, rhs1 = gimple_assign_rhs1(def_stmt); ++ ++ *potentionally_overflowed = true; ++ new_rhs1 = expand(visited, potentionally_overflowed, rhs1); ++ if (new_rhs1 == NULL_TREE) { ++ if (TREE_CODE(TREE_TYPE(rhs1)) == POINTER_TYPE) ++ return create_assign(visited, potentionally_overflowed, def_stmt, var, AFTER_STMT); ++ else ++ return create_assign(visited, potentionally_overflowed, def_stmt, rhs1, AFTER_STMT); ++ } ++ return dup_assign(visited, potentionally_overflowed, def_stmt, new_rhs1, NULL_TREE, NULL_TREE); ++} ++ ++static tree handle_unary_ops(struct pointer_set_t *visited, bool *potentionally_overflowed, tree var) ++{ ++ gimple def_stmt = get_def_stmt(var); ++ tree rhs1 = gimple_assign_rhs1(def_stmt); ++ ++ if (is_gimple_constant(rhs1)) ++ return dup_assign(visited, potentionally_overflowed, def_stmt, signed_cast(rhs1), NULL_TREE, NULL_TREE); ++ ++ gcc_assert(TREE_CODE(rhs1) != COND_EXPR); ++ switch (TREE_CODE(rhs1)) { ++ case SSA_NAME: ++ return handle_unary_rhs(visited, potentionally_overflowed, var); ++ ++ case ARRAY_REF: ++ case BIT_FIELD_REF: ++ case ADDR_EXPR: ++ case COMPONENT_REF: ++ case INDIRECT_REF: ++#if BUILDING_GCC_VERSION >= 4006 ++ case MEM_REF: ++#endif ++ case PARM_DECL: ++ case TARGET_MEM_REF: ++ case VAR_DECL: ++ return create_assign(visited, potentionally_overflowed, def_stmt, var, AFTER_STMT); ++ ++ default: ++ debug_gimple_stmt(def_stmt); ++ debug_tree(rhs1); ++ gcc_unreachable(); ++ } ++} ++ ++static void insert_cond(basic_block cond_bb, tree arg, enum tree_code cond_code, tree type_value) ++{ ++ gimple cond_stmt; ++ gimple_stmt_iterator gsi = gsi_last_bb(cond_bb); ++ ++ cond_stmt = gimple_build_cond(cond_code, arg, type_value, NULL_TREE, NULL_TREE); ++ gsi_insert_after(&gsi, cond_stmt, GSI_CONTINUE_LINKING); ++ update_stmt(cond_stmt); ++} ++ ++static tree create_string_param(tree string) ++{ ++ tree i_type, a_type; ++ int length = TREE_STRING_LENGTH(string); ++ ++ gcc_assert(length > 0); ++ ++ i_type = build_index_type(build_int_cst(NULL_TREE, length - 1)); ++ a_type = build_array_type(char_type_node, i_type); ++ ++ TREE_TYPE(string) = a_type; ++ TREE_CONSTANT(string) = 1; ++ TREE_READONLY(string) = 1; ++ ++ return build1(ADDR_EXPR, ptr_type_node, string); ++} ++ ++static void insert_cond_result(basic_block bb_true, gimple stmt, tree arg) ++{ ++ gimple func_stmt, def_stmt; ++ tree current_func, loc_file, loc_line; ++ expanded_location xloc; ++ gimple_stmt_iterator gsi = gsi_start_bb(bb_true); ++ ++ def_stmt = get_def_stmt(arg); ++ xloc = expand_location(gimple_location(def_stmt)); ++ ++ if (!gimple_has_location(def_stmt)) { ++ xloc = expand_location(gimple_location(stmt)); ++ if (!gimple_has_location(stmt)) ++ xloc = expand_location(DECL_SOURCE_LOCATION(current_function_decl)); ++ } ++ ++ loc_line = build_int_cstu(unsigned_type_node, xloc.line); ++ ++ loc_file = build_string(strlen(xloc.file) + 1, xloc.file); ++ loc_file = create_string_param(loc_file); ++ ++ current_func = build_string(NAME_LEN(current_function_decl) + 1, NAME(current_function_decl)); ++ current_func = create_string_param(current_func); ++ ++ // void report_size_overflow(const char *file, unsigned int line, const char *func) ++ func_stmt = gimple_build_call(report_size_overflow_decl, 3, loc_file, loc_line, current_func); ++ ++ gsi_insert_after(&gsi, func_stmt, GSI_CONTINUE_LINKING); ++} ++ ++static void __unused print_the_code_insertions(gimple stmt) ++{ ++ location_t loc = gimple_location(stmt); ++ ++ inform(loc, "Integer size_overflow check applied here."); ++} ++ ++static void insert_check_size_overflow(gimple stmt, enum tree_code cond_code, tree arg, tree type_value) ++{ ++ basic_block cond_bb, join_bb, bb_true; ++ edge e; ++ gimple_stmt_iterator gsi = gsi_for_stmt(stmt); ++ ++ cond_bb = gimple_bb(stmt); ++ gsi_prev(&gsi); ++ if (gsi_end_p(gsi)) ++ e = split_block_after_labels(cond_bb); ++ else ++ e = split_block(cond_bb, gsi_stmt(gsi)); ++ cond_bb = e->src; ++ join_bb = e->dest; ++ e->flags = EDGE_FALSE_VALUE; ++ e->probability = REG_BR_PROB_BASE; ++ ++ bb_true = create_empty_bb(cond_bb); ++ make_edge(cond_bb, bb_true, EDGE_TRUE_VALUE); ++ make_edge(cond_bb, join_bb, EDGE_FALSE_VALUE); ++ make_edge(bb_true, join_bb, EDGE_FALLTHRU); ++ ++ if (dom_info_available_p(CDI_DOMINATORS)) { ++ set_immediate_dominator(CDI_DOMINATORS, bb_true, cond_bb); ++ set_immediate_dominator(CDI_DOMINATORS, join_bb, cond_bb); ++ } ++ ++ if (current_loops != NULL) { ++ gcc_assert(cond_bb->loop_father == join_bb->loop_father); ++ add_bb_to_loop(bb_true, cond_bb->loop_father); ++ } ++ ++ insert_cond(cond_bb, arg, cond_code, type_value); ++ insert_cond_result(bb_true, stmt, arg); ++ ++// print_the_code_insertions(stmt); ++} ++ ++static gimple cast_to_unsigned_size_overflow_type(gimple stmt, tree cast_rhs) ++{ ++ gimple ucast_stmt; ++ gimple_stmt_iterator gsi; ++ location_t loc = gimple_location(stmt); ++ ++ ucast_stmt = build_cast_stmt(unsigned_size_overflow_type, cast_rhs, CREATE_NEW_VAR, loc); ++ gsi = gsi_for_stmt(stmt); ++ gsi_insert_before(&gsi, ucast_stmt, GSI_SAME_STMT); ++ return ucast_stmt; ++} ++ ++static void check_size_overflow(gimple stmt, tree cast_rhs, tree rhs, bool *potentionally_overflowed) ++{ ++ tree type_max, type_min, rhs_type = TREE_TYPE(rhs); ++ gimple ucast_stmt; ++ ++ if (!*potentionally_overflowed) ++ return; ++ ++ if (TYPE_UNSIGNED(rhs_type)) { ++ ucast_stmt = cast_to_unsigned_size_overflow_type(stmt, cast_rhs); ++ type_max = cast_a_tree(unsigned_size_overflow_type, TYPE_MAX_VALUE(rhs_type)); ++ insert_check_size_overflow(stmt, GT_EXPR, gimple_get_lhs(ucast_stmt), type_max); ++ } else { ++ type_max = signed_cast(TYPE_MAX_VALUE(rhs_type)); ++ insert_check_size_overflow(stmt, GT_EXPR, cast_rhs, type_max); ++ ++ type_min = signed_cast(TYPE_MIN_VALUE(rhs_type)); ++ insert_check_size_overflow(stmt, LT_EXPR, cast_rhs, type_min); ++ } ++} ++ ++static tree change_assign_rhs(gimple stmt, tree orig_rhs, tree new_rhs) ++{ ++ gimple assign; ++ gimple_stmt_iterator gsi = gsi_for_stmt(stmt); ++ tree origtype = TREE_TYPE(orig_rhs); ++ ++ gcc_assert(gimple_code(stmt) == GIMPLE_ASSIGN); ++ ++ assign = build_cast_stmt(origtype, new_rhs, CREATE_NEW_VAR, gimple_location(stmt)); ++ gsi_insert_before(&gsi, assign, GSI_SAME_STMT); ++ update_stmt(assign); ++ return gimple_get_lhs(assign); ++} ++ ++static tree handle_const_assign(struct pointer_set_t *visited, bool *potentionally_overflowed, gimple def_stmt, tree var, tree orig_rhs, tree var_rhs, tree new_rhs1, tree new_rhs2, void (*gimple_assign_set_rhs)(gimple, tree)) ++{ ++ tree new_rhs; ++ ++ if (gimple_assign_rhs_code(def_stmt) == MIN_EXPR) ++ return dup_assign(visited, potentionally_overflowed, def_stmt, new_rhs1, new_rhs2, NULL_TREE); ++ ++ if (var_rhs == NULL_TREE) ++ return create_assign(visited, potentionally_overflowed, def_stmt, var, AFTER_STMT); ++ ++ new_rhs = change_assign_rhs(def_stmt, orig_rhs, var_rhs); ++ gimple_assign_set_rhs(def_stmt, new_rhs); ++ update_stmt(def_stmt); ++ ++ check_size_overflow(def_stmt, var_rhs, orig_rhs, potentionally_overflowed); ++ return create_assign(visited, potentionally_overflowed, def_stmt, var, AFTER_STMT); ++} ++ ++static tree handle_binary_ops(struct pointer_set_t *visited, bool *potentionally_overflowed, tree var) ++{ ++ tree rhs1, rhs2; ++ gimple def_stmt = get_def_stmt(var); ++ tree new_rhs1 = NULL_TREE; ++ tree new_rhs2 = NULL_TREE; ++ ++ rhs1 = gimple_assign_rhs1(def_stmt); ++ rhs2 = gimple_assign_rhs2(def_stmt); ++ ++ /* no DImode/TImode division in the 32/64 bit kernel */ ++ switch (gimple_assign_rhs_code(def_stmt)) { ++ case RDIV_EXPR: ++ case TRUNC_DIV_EXPR: ++ case CEIL_DIV_EXPR: ++ case FLOOR_DIV_EXPR: ++ case ROUND_DIV_EXPR: ++ case TRUNC_MOD_EXPR: ++ case CEIL_MOD_EXPR: ++ case FLOOR_MOD_EXPR: ++ case ROUND_MOD_EXPR: ++ case EXACT_DIV_EXPR: ++ case POINTER_PLUS_EXPR: ++ case BIT_AND_EXPR: ++ return create_assign(visited, potentionally_overflowed, def_stmt, var, AFTER_STMT); ++ default: ++ break; ++ } ++ ++ *potentionally_overflowed = true; ++ ++ if (TREE_CODE(rhs1) == SSA_NAME) ++ new_rhs1 = expand(visited, potentionally_overflowed, rhs1); ++ if (TREE_CODE(rhs2) == SSA_NAME) ++ new_rhs2 = expand(visited, potentionally_overflowed, rhs2); ++ ++ if (is_gimple_constant(rhs2)) ++ return handle_const_assign(visited, potentionally_overflowed, def_stmt, var, rhs1, new_rhs1, new_rhs1, signed_cast(rhs2), &gimple_assign_set_rhs1); ++ ++ if (is_gimple_constant(rhs1)) ++ return handle_const_assign(visited, potentionally_overflowed, def_stmt, var, rhs2, new_rhs2, signed_cast(rhs1), new_rhs2, &gimple_assign_set_rhs2); ++ ++ return dup_assign(visited, potentionally_overflowed, def_stmt, new_rhs1, new_rhs2, NULL_TREE); ++} ++ ++#if BUILDING_GCC_VERSION >= 4007 ++static tree get_new_rhs(struct pointer_set_t *visited, bool *potentionally_overflowed, tree rhs) ++{ ++ if (is_gimple_constant(rhs)) ++ return signed_cast(rhs); ++ if (TREE_CODE(rhs) != SSA_NAME) ++ return NULL_TREE; ++ return expand(visited, potentionally_overflowed, rhs); ++} ++ ++static tree handle_ternary_ops(struct pointer_set_t *visited, bool *potentionally_overflowed, tree var) ++{ ++ tree rhs1, rhs2, rhs3, new_rhs1, new_rhs2, new_rhs3; ++ gimple def_stmt = get_def_stmt(var); ++ ++ *potentionally_overflowed = true; ++ ++ rhs1 = gimple_assign_rhs1(def_stmt); ++ rhs2 = gimple_assign_rhs2(def_stmt); ++ rhs3 = gimple_assign_rhs3(def_stmt); ++ new_rhs1 = get_new_rhs(visited, potentionally_overflowed, rhs1); ++ new_rhs2 = get_new_rhs(visited, potentionally_overflowed, rhs2); ++ new_rhs3 = get_new_rhs(visited, potentionally_overflowed, rhs3); ++ ++ if (new_rhs1 == NULL_TREE && new_rhs2 != NULL_TREE && new_rhs3 != NULL_TREE) ++ return dup_assign(visited, potentionally_overflowed, def_stmt, new_rhs1, new_rhs2, new_rhs3); ++ error("handle_ternary_ops: unknown rhs"); ++ gcc_unreachable(); ++} ++#endif ++ ++static void set_size_overflow_type(tree node) ++{ ++ switch (TYPE_MODE(TREE_TYPE(node))) { ++ case SImode: ++ signed_size_overflow_type = intDI_type_node; ++ unsigned_size_overflow_type = unsigned_intDI_type_node; ++ break; ++ case DImode: ++ if (LONG_TYPE_SIZE == GET_MODE_BITSIZE(SImode)) { ++ signed_size_overflow_type = intDI_type_node; ++ unsigned_size_overflow_type = unsigned_intDI_type_node; ++ } else { ++ signed_size_overflow_type = intTI_type_node; ++ unsigned_size_overflow_type = unsigned_intTI_type_node; ++ } ++ break; ++ default: ++ error("set_size_overflow_type: unsupported gcc configuration."); ++ gcc_unreachable(); ++ } ++} ++ ++static tree expand_visited(gimple def_stmt) ++{ ++ gimple tmp; ++ gimple_stmt_iterator gsi = gsi_for_stmt(def_stmt); ++ ++ gsi_next(&gsi); ++ tmp = gsi_stmt(gsi); ++ switch (gimple_code(tmp)) { ++ case GIMPLE_ASSIGN: ++ return gimple_get_lhs(tmp); ++ case GIMPLE_PHI: ++ return gimple_phi_result(tmp); ++ case GIMPLE_CALL: ++ return gimple_call_lhs(tmp); ++ default: ++ return NULL_TREE; ++ } ++} ++ ++static tree expand(struct pointer_set_t *visited, bool *potentionally_overflowed, tree var) ++{ ++ gimple def_stmt; ++ enum tree_code code = TREE_CODE(TREE_TYPE(var)); ++ ++ if (is_gimple_constant(var)) ++ return NULL_TREE; ++ ++ if (TREE_CODE(var) == ADDR_EXPR) ++ return NULL_TREE; ++ ++ gcc_assert(code == INTEGER_TYPE || code == POINTER_TYPE || code == BOOLEAN_TYPE || code == ENUMERAL_TYPE); ++ if (code != INTEGER_TYPE) ++ return NULL_TREE; ++ ++ if (SSA_NAME_IS_DEFAULT_DEF(var)) { ++ check_missing_attribute(var); ++ return NULL_TREE; ++ } ++ ++ def_stmt = get_def_stmt(var); ++ ++ if (!def_stmt) ++ return NULL_TREE; ++ ++ if (pointer_set_contains(visited, def_stmt)) ++ return expand_visited(def_stmt); ++ ++ switch (gimple_code(def_stmt)) { ++ case GIMPLE_NOP: ++ check_missing_attribute(var); ++ return NULL_TREE; ++ case GIMPLE_PHI: ++ return build_new_phi(visited, potentionally_overflowed, def_stmt); ++ case GIMPLE_CALL: ++ case GIMPLE_ASM: ++ return create_assign(visited, potentionally_overflowed, def_stmt, var, AFTER_STMT); ++ case GIMPLE_ASSIGN: ++ switch (gimple_num_ops(def_stmt)) { ++ case 2: ++ return handle_unary_ops(visited, potentionally_overflowed, var); ++ case 3: ++ return handle_binary_ops(visited, potentionally_overflowed, var); ++#if BUILDING_GCC_VERSION >= 4007 ++ case 4: ++ return handle_ternary_ops(visited, potentionally_overflowed, var); ++#endif ++ } ++ default: ++ debug_gimple_stmt(def_stmt); ++ error("expand: unknown gimple code"); ++ gcc_unreachable(); ++ } ++} ++ ++static void change_function_arg(gimple stmt, tree origarg, unsigned int argnum, tree newarg) ++{ ++ gimple assign; ++ gimple_stmt_iterator gsi = gsi_for_stmt(stmt); ++ tree origtype = TREE_TYPE(origarg); ++ ++ gcc_assert(gimple_code(stmt) == GIMPLE_CALL); ++ ++ assign = build_cast_stmt(origtype, newarg, CREATE_NEW_VAR, gimple_location(stmt)); ++ gsi_insert_before(&gsi, assign, GSI_SAME_STMT); ++ update_stmt(assign); ++ ++ gimple_call_set_arg(stmt, argnum, gimple_get_lhs(assign)); ++ update_stmt(stmt); ++} ++ ++static tree get_function_arg(unsigned int argnum, gimple stmt, tree fndecl) ++{ ++ const char *origid; ++ tree arg, origarg; ++ ++ if (!DECL_ABSTRACT_ORIGIN(fndecl)) { ++ gcc_assert(gimple_call_num_args(stmt) > argnum); ++ return gimple_call_arg(stmt, argnum); ++ } ++ ++ origarg = DECL_ARGUMENTS(DECL_ABSTRACT_ORIGIN(fndecl)); ++ while (origarg && argnum) { ++ argnum--; ++ origarg = TREE_CHAIN(origarg); ++ } ++ ++ gcc_assert(argnum == 0); ++ ++ gcc_assert(origarg != NULL_TREE); ++ origid = NAME(origarg); ++ for (arg = DECL_ARGUMENTS(fndecl); arg; arg = TREE_CHAIN(arg)) { ++ if (!strcmp(origid, NAME(arg))) ++ return arg; ++ } ++ return NULL_TREE; ++} ++ ++static void handle_function_arg(gimple stmt, tree fndecl, unsigned int argnum) ++{ ++ struct pointer_set_t *visited; ++ tree arg, newarg; ++ bool potentionally_overflowed; ++ ++ arg = get_function_arg(argnum, stmt, fndecl); ++ if (arg == NULL_TREE) ++ return; ++ ++ if (is_gimple_constant(arg)) ++ return; ++ if (TREE_CODE(arg) != SSA_NAME) ++ return; ++ ++ check_arg_type(arg); ++ ++ set_size_overflow_type(arg); ++ ++ visited = pointer_set_create(); ++ potentionally_overflowed = false; ++ newarg = expand(visited, &potentionally_overflowed, arg); ++ pointer_set_destroy(visited); ++ ++ if (newarg == NULL_TREE || !potentionally_overflowed) ++ return; ++ ++ change_function_arg(stmt, arg, argnum, newarg); ++ ++ check_size_overflow(stmt, newarg, arg, &potentionally_overflowed); ++} ++ ++static void handle_function_by_attribute(gimple stmt, tree attr, tree fndecl) ++{ ++ tree p = TREE_VALUE(attr); ++ do { ++ handle_function_arg(stmt, fndecl, TREE_INT_CST_LOW(TREE_VALUE(p))-1); ++ p = TREE_CHAIN(p); ++ } while (p); ++} ++ ++static void handle_function_by_hash(gimple stmt, tree fndecl) ++{ ++ tree orig_fndecl; ++ unsigned int num; ++ struct size_overflow_hash *hash; ++ ++ orig_fndecl = get_original_function_decl(fndecl); ++ hash = get_function_hash(orig_fndecl); ++ if (!hash) ++ return; ++ ++ for (num = 1; num <= MAX_PARAM; num++) ++ if (hash->param & (1U << num)) ++ handle_function_arg(stmt, fndecl, num - 1); ++} ++ ++static unsigned int handle_function(void) ++{ ++ basic_block bb = ENTRY_BLOCK_PTR->next_bb; ++ int saved_last_basic_block = last_basic_block; ++ ++ do { ++ gimple_stmt_iterator gsi; ++ basic_block next = bb->next_bb; ++ ++ for (gsi = gsi_start_bb(bb); !gsi_end_p(gsi); gsi_next(&gsi)) { ++ tree fndecl, attr; ++ gimple stmt = gsi_stmt(gsi); ++ ++ if (!(is_gimple_call(stmt))) ++ continue; ++ fndecl = gimple_call_fndecl(stmt); ++ if (fndecl == NULL_TREE) ++ continue; ++ if (gimple_call_num_args(stmt) == 0) ++ continue; ++ attr = lookup_attribute("size_overflow", TYPE_ATTRIBUTES(TREE_TYPE(fndecl))); ++ if (!attr || !TREE_VALUE(attr)) ++ handle_function_by_hash(stmt, fndecl); ++ else ++ handle_function_by_attribute(stmt, attr, fndecl); ++ gsi = gsi_for_stmt(stmt); ++ } ++ bb = next; ++ } while (bb && bb->index <= saved_last_basic_block); ++ return 0; ++} ++ ++static struct gimple_opt_pass size_overflow_pass = { ++ .pass = { ++ .type = GIMPLE_PASS, ++ .name = "size_overflow", ++ .gate = NULL, ++ .execute = handle_function, ++ .sub = NULL, ++ .next = NULL, ++ .static_pass_number = 0, ++ .tv_id = TV_NONE, ++ .properties_required = PROP_cfg | PROP_referenced_vars, ++ .properties_provided = 0, ++ .properties_destroyed = 0, ++ .todo_flags_start = 0, ++ .todo_flags_finish = TODO_verify_ssa | TODO_verify_stmts | TODO_dump_func | TODO_remove_unused_locals | TODO_update_ssa_no_phi | TODO_cleanup_cfg | TODO_ggc_collect | TODO_verify_flow ++ } ++}; ++ ++static void start_unit_callback(void __unused *gcc_data, void __unused *user_data) ++{ ++ tree fntype; ++ ++ const_char_ptr_type_node = build_pointer_type(build_type_variant(char_type_node, 1, 0)); ++ ++ // void report_size_overflow(const char *loc_file, unsigned int loc_line, const char *current_func) ++ fntype = build_function_type_list(void_type_node, ++ const_char_ptr_type_node, ++ unsigned_type_node, ++ const_char_ptr_type_node, ++ NULL_TREE); ++ report_size_overflow_decl = build_fn_decl("report_size_overflow", fntype); ++ ++ DECL_ASSEMBLER_NAME(report_size_overflow_decl); ++ TREE_PUBLIC(report_size_overflow_decl) = 1; ++ DECL_EXTERNAL(report_size_overflow_decl) = 1; ++ DECL_ARTIFICIAL(report_size_overflow_decl) = 1; ++} ++ ++int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version) ++{ ++ int i; ++ const char * const plugin_name = plugin_info->base_name; ++ const int argc = plugin_info->argc; ++ const struct plugin_argument * const argv = plugin_info->argv; ++ bool enable = true; ++ ++ struct register_pass_info size_overflow_pass_info = { ++ .pass = &size_overflow_pass.pass, ++ .reference_pass_name = "ssa", ++ .ref_pass_instance_number = 1, ++ .pos_op = PASS_POS_INSERT_AFTER ++ }; ++ ++ if (!plugin_default_version_check(version, &gcc_version)) { ++ error(G_("incompatible gcc/plugin versions")); ++ return 1; ++ } ++ ++ for (i = 0; i < argc; ++i) { ++ if (!strcmp(argv[i].key, "no-size-overflow")) { ++ enable = false; ++ continue; ++ } ++ error(G_("unkown option '-fplugin-arg-%s-%s'"), plugin_name, argv[i].key); ++ } ++ ++ register_callback(plugin_name, PLUGIN_INFO, NULL, &size_overflow_plugin_info); ++ if (enable) { ++ register_callback ("start_unit", PLUGIN_START_UNIT, &start_unit_callback, NULL); ++ register_callback(plugin_name, PLUGIN_PASS_MANAGER_SETUP, NULL, &size_overflow_pass_info); ++ } ++ register_callback(plugin_name, PLUGIN_ATTRIBUTES, register_attributes, NULL); ++ ++ return 0; ++} +diff --git a/tools/gcc/stackleak_plugin.c b/tools/gcc/stackleak_plugin.c +new file mode 100644 +index 0000000..b87ec9d +--- /dev/null ++++ b/tools/gcc/stackleak_plugin.c +@@ -0,0 +1,313 @@ ++/* ++ * Copyright 2011 by the PaX Team <pageexec@freemail.hu> ++ * Licensed under the GPL v2 ++ * ++ * Note: the choice of the license means that the compilation process is ++ * NOT 'eligible' as defined by gcc's library exception to the GPL v3, ++ * but for the kernel it doesn't matter since it doesn't link against ++ * any of the gcc libraries ++ * ++ * gcc plugin to help implement various PaX features ++ * ++ * - track lowest stack pointer ++ * ++ * TODO: ++ * - initialize all local variables ++ * ++ * BUGS: ++ * - none known ++ */ ++#include "gcc-plugin.h" ++#include "config.h" ++#include "system.h" ++#include "coretypes.h" ++#include "tree.h" ++#include "tree-pass.h" ++#include "flags.h" ++#include "intl.h" ++#include "toplev.h" ++#include "plugin.h" ++//#include "expr.h" where are you... ++#include "diagnostic.h" ++#include "plugin-version.h" ++#include "tm.h" ++#include "function.h" ++#include "basic-block.h" ++#include "gimple.h" ++#include "rtl.h" ++#include "emit-rtl.h" ++ ++extern void print_gimple_stmt(FILE *, gimple, int, int); ++ ++int plugin_is_GPL_compatible; ++ ++static int track_frame_size = -1; ++static const char track_function[] = "pax_track_stack"; ++static const char check_function[] = "pax_check_alloca"; ++static bool init_locals; ++ ++static struct plugin_info stackleak_plugin_info = { ++ .version = "201203140940", ++ .help = "track-lowest-sp=nn\ttrack sp in functions whose frame size is at least nn bytes\n" ++// "initialize-locals\t\tforcibly initialize all stack frames\n" ++}; ++ ++static bool gate_stackleak_track_stack(void); ++static unsigned int execute_stackleak_tree_instrument(void); ++static unsigned int execute_stackleak_final(void); ++ ++static struct gimple_opt_pass stackleak_tree_instrument_pass = { ++ .pass = { ++ .type = GIMPLE_PASS, ++ .name = "stackleak_tree_instrument", ++ .gate = gate_stackleak_track_stack, ++ .execute = execute_stackleak_tree_instrument, ++ .sub = NULL, ++ .next = NULL, ++ .static_pass_number = 0, ++ .tv_id = TV_NONE, ++ .properties_required = PROP_gimple_leh | PROP_cfg, ++ .properties_provided = 0, ++ .properties_destroyed = 0, ++ .todo_flags_start = 0, //TODO_verify_ssa | TODO_verify_flow | TODO_verify_stmts, ++ .todo_flags_finish = TODO_verify_ssa | TODO_verify_stmts | TODO_dump_func | TODO_update_ssa ++ } ++}; ++ ++static struct rtl_opt_pass stackleak_final_rtl_opt_pass = { ++ .pass = { ++ .type = RTL_PASS, ++ .name = "stackleak_final", ++ .gate = gate_stackleak_track_stack, ++ .execute = execute_stackleak_final, ++ .sub = NULL, ++ .next = NULL, ++ .static_pass_number = 0, ++ .tv_id = TV_NONE, ++ .properties_required = 0, ++ .properties_provided = 0, ++ .properties_destroyed = 0, ++ .todo_flags_start = 0, ++ .todo_flags_finish = TODO_dump_func ++ } ++}; ++ ++static bool gate_stackleak_track_stack(void) ++{ ++ return track_frame_size >= 0; ++} ++ ++static void stackleak_check_alloca(gimple_stmt_iterator *gsi) ++{ ++ gimple check_alloca; ++ tree fntype, fndecl, alloca_size; ++ ++ fntype = build_function_type_list(void_type_node, long_unsigned_type_node, NULL_TREE); ++ fndecl = build_fn_decl(check_function, fntype); ++ DECL_ASSEMBLER_NAME(fndecl); // for LTO ++ ++ // insert call to void pax_check_alloca(unsigned long size) ++ alloca_size = gimple_call_arg(gsi_stmt(*gsi), 0); ++ check_alloca = gimple_build_call(fndecl, 1, alloca_size); ++ gsi_insert_before(gsi, check_alloca, GSI_SAME_STMT); ++} ++ ++static void stackleak_add_instrumentation(gimple_stmt_iterator *gsi) ++{ ++ gimple track_stack; ++ tree fntype, fndecl; ++ ++ fntype = build_function_type_list(void_type_node, NULL_TREE); ++ fndecl = build_fn_decl(track_function, fntype); ++ DECL_ASSEMBLER_NAME(fndecl); // for LTO ++ ++ // insert call to void pax_track_stack(void) ++ track_stack = gimple_build_call(fndecl, 0); ++ gsi_insert_after(gsi, track_stack, GSI_CONTINUE_LINKING); ++} ++ ++#if BUILDING_GCC_VERSION == 4005 ++static bool gimple_call_builtin_p(gimple stmt, enum built_in_function code) ++{ ++ tree fndecl; ++ ++ if (!is_gimple_call(stmt)) ++ return false; ++ fndecl = gimple_call_fndecl(stmt); ++ if (!fndecl) ++ return false; ++ if (DECL_BUILT_IN_CLASS(fndecl) != BUILT_IN_NORMAL) ++ return false; ++// print_node(stderr, "pax", fndecl, 4); ++ return DECL_FUNCTION_CODE(fndecl) == code; ++} ++#endif ++ ++static bool is_alloca(gimple stmt) ++{ ++ if (gimple_call_builtin_p(stmt, BUILT_IN_ALLOCA)) ++ return true; ++ ++#if BUILDING_GCC_VERSION >= 4007 ++ if (gimple_call_builtin_p(stmt, BUILT_IN_ALLOCA_WITH_ALIGN)) ++ return true; ++#endif ++ ++ return false; ++} ++ ++static unsigned int execute_stackleak_tree_instrument(void) ++{ ++ basic_block bb, entry_bb; ++ bool prologue_instrumented = false, is_leaf = true; ++ ++ entry_bb = ENTRY_BLOCK_PTR_FOR_FUNCTION(cfun)->next_bb; ++ ++ // 1. loop through BBs and GIMPLE statements ++ FOR_EACH_BB(bb) { ++ gimple_stmt_iterator gsi; ++ ++ for (gsi = gsi_start_bb(bb); !gsi_end_p(gsi); gsi_next(&gsi)) { ++ gimple stmt; ++ ++ stmt = gsi_stmt(gsi); ++ ++ if (is_gimple_call(stmt)) ++ is_leaf = false; ++ ++ // gimple match: align 8 built-in BUILT_IN_NORMAL:BUILT_IN_ALLOCA attributes <tree_list 0xb7576450> ++ if (!is_alloca(stmt)) ++ continue; ++ ++ // 2. insert stack overflow check before each __builtin_alloca call ++ stackleak_check_alloca(&gsi); ++ ++ // 3. insert track call after each __builtin_alloca call ++ stackleak_add_instrumentation(&gsi); ++ if (bb == entry_bb) ++ prologue_instrumented = true; ++ } ++ } ++ ++ // special cases for some bad linux code: taking the address of static inline functions will materialize them ++ // but we mustn't instrument some of them as the resulting stack alignment required by the function call ABI ++ // will break other assumptions regarding the expected (but not otherwise enforced) register clobbering ABI. ++ // case in point: native_save_fl on amd64 when optimized for size clobbers rdx if it were instrumented here. ++ if (is_leaf && !TREE_PUBLIC(current_function_decl) && DECL_DECLARED_INLINE_P(current_function_decl)) ++ return 0; ++ if (is_leaf && !strncmp(IDENTIFIER_POINTER(DECL_NAME(current_function_decl)), "_paravirt_", 10)) ++ return 0; ++ ++ // 4. insert track call at the beginning ++ if (!prologue_instrumented) { ++ gimple_stmt_iterator gsi; ++ ++ bb = split_block_after_labels(ENTRY_BLOCK_PTR)->dest; ++ if (dom_info_available_p(CDI_DOMINATORS)) ++ set_immediate_dominator(CDI_DOMINATORS, bb, ENTRY_BLOCK_PTR); ++ gsi = gsi_start_bb(bb); ++ stackleak_add_instrumentation(&gsi); ++ } ++ ++ return 0; ++} ++ ++static unsigned int execute_stackleak_final(void) ++{ ++ rtx insn; ++ ++ if (cfun->calls_alloca) ++ return 0; ++ ++ // keep calls only if function frame is big enough ++ if (get_frame_size() >= track_frame_size) ++ return 0; ++ ++ // 1. find pax_track_stack calls ++ for (insn = get_insns(); insn; insn = NEXT_INSN(insn)) { ++ // rtl match: (call_insn 8 7 9 3 (call (mem (symbol_ref ("pax_track_stack") [flags 0x41] <function_decl 0xb7470e80 pax_track_stack>) [0 S1 A8]) (4)) -1 (nil) (nil)) ++ rtx body; ++ ++ if (!CALL_P(insn)) ++ continue; ++ body = PATTERN(insn); ++ if (GET_CODE(body) != CALL) ++ continue; ++ body = XEXP(body, 0); ++ if (GET_CODE(body) != MEM) ++ continue; ++ body = XEXP(body, 0); ++ if (GET_CODE(body) != SYMBOL_REF) ++ continue; ++ if (strcmp(XSTR(body, 0), track_function)) ++ continue; ++// warning(0, "track_frame_size: %d %ld %d", cfun->calls_alloca, get_frame_size(), track_frame_size); ++ // 2. delete call ++ insn = delete_insn_and_edges(insn); ++#if BUILDING_GCC_VERSION >= 4007 ++ if (GET_CODE(insn) == NOTE && NOTE_KIND(insn) == NOTE_INSN_CALL_ARG_LOCATION) ++ insn = delete_insn_and_edges(insn); ++#endif ++ } ++ ++// print_simple_rtl(stderr, get_insns()); ++// print_rtl(stderr, get_insns()); ++// warning(0, "track_frame_size: %d %ld %d", cfun->calls_alloca, get_frame_size(), track_frame_size); ++ ++ return 0; ++} ++ ++int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version) ++{ ++ const char * const plugin_name = plugin_info->base_name; ++ const int argc = plugin_info->argc; ++ const struct plugin_argument * const argv = plugin_info->argv; ++ int i; ++ struct register_pass_info stackleak_tree_instrument_pass_info = { ++ .pass = &stackleak_tree_instrument_pass.pass, ++// .reference_pass_name = "tree_profile", ++ .reference_pass_name = "optimized", ++ .ref_pass_instance_number = 0, ++ .pos_op = PASS_POS_INSERT_BEFORE ++ }; ++ struct register_pass_info stackleak_final_pass_info = { ++ .pass = &stackleak_final_rtl_opt_pass.pass, ++ .reference_pass_name = "final", ++ .ref_pass_instance_number = 0, ++ .pos_op = PASS_POS_INSERT_BEFORE ++ }; ++ ++ if (!plugin_default_version_check(version, &gcc_version)) { ++ error(G_("incompatible gcc/plugin versions")); ++ return 1; ++ } ++ ++ register_callback(plugin_name, PLUGIN_INFO, NULL, &stackleak_plugin_info); ++ ++ for (i = 0; i < argc; ++i) { ++ if (!strcmp(argv[i].key, "track-lowest-sp")) { ++ if (!argv[i].value) { ++ error(G_("no value supplied for option '-fplugin-arg-%s-%s'"), plugin_name, argv[i].key); ++ continue; ++ } ++ track_frame_size = atoi(argv[i].value); ++ if (argv[i].value[0] < '0' || argv[i].value[0] > '9' || track_frame_size < 0) ++ error(G_("invalid option argument '-fplugin-arg-%s-%s=%s'"), plugin_name, argv[i].key, argv[i].value); ++ continue; ++ } ++ if (!strcmp(argv[i].key, "initialize-locals")) { ++ if (argv[i].value) { ++ error(G_("invalid option argument '-fplugin-arg-%s-%s=%s'"), plugin_name, argv[i].key, argv[i].value); ++ continue; ++ } ++ init_locals = true; ++ continue; ++ } ++ error(G_("unkown option '-fplugin-arg-%s-%s'"), plugin_name, argv[i].key); ++ } ++ ++ register_callback(plugin_name, PLUGIN_PASS_MANAGER_SETUP, NULL, &stackleak_tree_instrument_pass_info); ++ register_callback(plugin_name, PLUGIN_PASS_MANAGER_SETUP, NULL, &stackleak_final_pass_info); ++ ++ return 0; ++} +diff --git a/tools/perf/util/include/asm/alternative-asm.h b/tools/perf/util/include/asm/alternative-asm.h +index 6789d78..4afd019 100644 +--- a/tools/perf/util/include/asm/alternative-asm.h ++++ b/tools/perf/util/include/asm/alternative-asm.h +@@ -5,4 +5,7 @@ + + #define altinstruction_entry # + ++ .macro pax_force_retaddr rip=0, reload=0 ++ .endm ++ + #endif +diff --git a/usr/gen_init_cpio.c b/usr/gen_init_cpio.c +index af0f22f..9a7d479 100644 +--- a/usr/gen_init_cpio.c ++++ b/usr/gen_init_cpio.c +@@ -303,7 +303,7 @@ static int cpio_mkfile(const char *name, const char *location, + int retval; + int rc = -1; + int namesize; +- int i; ++ unsigned int i; + + mode |= S_IFREG; + +@@ -392,9 +392,10 @@ static char *cpio_replace_env(char *new_location) + *env_var = *expanded = '\0'; + strncat(env_var, start + 2, end - start - 2); + strncat(expanded, new_location, start - new_location); +- strncat(expanded, getenv(env_var), PATH_MAX); +- strncat(expanded, end + 1, PATH_MAX); ++ strncat(expanded, getenv(env_var), PATH_MAX - strlen(expanded)); ++ strncat(expanded, end + 1, PATH_MAX - strlen(expanded)); + strncpy(new_location, expanded, PATH_MAX); ++ new_location[PATH_MAX] = 0; + } else + break; + } +diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c +index 9739b53..6d457e3 100644 +--- a/virt/kvm/kvm_main.c ++++ b/virt/kvm/kvm_main.c +@@ -75,7 +75,7 @@ LIST_HEAD(vm_list); + + static cpumask_var_t cpus_hardware_enabled; + static int kvm_usage_count = 0; +-static atomic_t hardware_enable_failed; ++static atomic_unchecked_t hardware_enable_failed; + + struct kmem_cache *kvm_vcpu_cache; + EXPORT_SYMBOL_GPL(kvm_vcpu_cache); +@@ -2247,7 +2247,7 @@ static void hardware_enable_nolock(void *junk) + + if (r) { + cpumask_clear_cpu(cpu, cpus_hardware_enabled); +- atomic_inc(&hardware_enable_failed); ++ atomic_inc_unchecked(&hardware_enable_failed); + printk(KERN_INFO "kvm: enabling virtualization on " + "CPU%d failed\n", cpu); + } +@@ -2301,10 +2301,10 @@ static int hardware_enable_all(void) + + kvm_usage_count++; + if (kvm_usage_count == 1) { +- atomic_set(&hardware_enable_failed, 0); ++ atomic_set_unchecked(&hardware_enable_failed, 0); + on_each_cpu(hardware_enable_nolock, NULL, 1); + +- if (atomic_read(&hardware_enable_failed)) { ++ if (atomic_read_unchecked(&hardware_enable_failed)) { + hardware_disable_all_nolock(); + r = -EBUSY; + } +@@ -2667,7 +2667,7 @@ static void kvm_sched_out(struct preempt_notifier *pn, + kvm_arch_vcpu_put(vcpu); + } + +-int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, ++int kvm_init(const void *opaque, unsigned vcpu_size, unsigned vcpu_align, + struct module *module) + { + int r; +@@ -2730,7 +2730,7 @@ int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, + if (!vcpu_align) + vcpu_align = __alignof__(struct kvm_vcpu); + kvm_vcpu_cache = kmem_cache_create("kvm_vcpu", vcpu_size, vcpu_align, +- 0, NULL); ++ SLAB_USERCOPY, NULL); + if (!kvm_vcpu_cache) { + r = -ENOMEM; + goto out_free_3; +@@ -2740,9 +2740,11 @@ int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, + if (r) + goto out_free; + +- kvm_chardev_ops.owner = module; +- kvm_vm_fops.owner = module; +- kvm_vcpu_fops.owner = module; ++ pax_open_kernel(); ++ *(void **)&kvm_chardev_ops.owner = module; ++ *(void **)&kvm_vm_fops.owner = module; ++ *(void **)&kvm_vcpu_fops.owner = module; ++ pax_close_kernel(); + + r = misc_register(&kvm_dev); + if (r) { |