diff options
| -rw-r--r-- | 3.10.2/0000_README | 2 | ||||
| -rw-r--r-- | 3.10.2/4420_grsecurity-2.9.1-3.10.3-201307261236.patch (renamed from 3.10.2/4420_grsecurity-2.9.1-3.10.2-201307212247.patch) | 572 | ||||
| -rw-r--r-- | 3.2.48/0000_README | 2 | ||||
| -rw-r--r-- | 3.2.48/4420_grsecurity-2.9.1-3.2.48-201307261327.patch (renamed from 3.2.48/4420_grsecurity-2.9.1-3.2.48-201307212241.patch) | 444 |
4 files changed, 771 insertions, 249 deletions
diff --git a/3.10.2/0000_README b/3.10.2/0000_README index e834ed0..a26d38c 100644 --- a/3.10.2/0000_README +++ b/3.10.2/0000_README @@ -2,7 +2,7 @@ README ----------------------------------------------------------------------------- Individual Patch Descriptions: ----------------------------------------------------------------------------- -Patch: 4420_grsecurity-2.9.1-3.10.2-201307212247.patch +Patch: 4420_grsecurity-2.9.1-3.10.3-201307261236.patch From: http://www.grsecurity.net Desc: hardened-sources base patch from upstream grsecurity diff --git a/3.10.2/4420_grsecurity-2.9.1-3.10.2-201307212247.patch b/3.10.2/4420_grsecurity-2.9.1-3.10.3-201307261236.patch index 0a1f292..194d82d 100644 --- a/3.10.2/4420_grsecurity-2.9.1-3.10.2-201307212247.patch +++ b/3.10.2/4420_grsecurity-2.9.1-3.10.3-201307261236.patch @@ -229,7 +229,7 @@ index b89a739..79768fb 100644 +zconf.lex.c zoffset.h diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt -index 2fe6e76..3dd8184 100644 +index 2fe6e76..df58221 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -976,6 +976,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted. @@ -243,7 +243,7 @@ index 2fe6e76..3dd8184 100644 hashdist= [KNL,NUMA] Large hashes allocated during boot are distributed across NUMA nodes. Defaults on for 64-bit NUMA, off otherwise. -@@ -2195,6 +2199,18 @@ bytes respectively. Such letter suffixes can also be entirely omitted. +@@ -2195,6 +2199,22 @@ 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. @@ -252,6 +252,10 @@ index 2fe6e76..3dd8184 100644 + expand down segment used by UDEREF on X86-32 or the frequent + page table updates on X86-64. + ++ pax_sanitize_slab= ++ 0/1 to disable/enable slab object sanitization (enabled by ++ default). ++ + pax_softmode= 0/1 to disable/enable PaX softmode on boot already. + + pax_extra_latent_entropy @@ -263,7 +267,7 @@ index 2fe6e76..3dd8184 100644 pcd. [PARIDE] diff --git a/Makefile b/Makefile -index 4336730..cb79194 100644 +index b548552..6e18246 100644 --- a/Makefile +++ b/Makefile @@ -241,8 +241,9 @@ CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ @@ -6428,7 +6432,7 @@ index 4aad413..85d86bf 100644 #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 4a9e408..724aa59 100644 +index 362142b..8b22c1b 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -234,6 +234,7 @@ @@ -6681,10 +6685,10 @@ index 645170a..6cf0271 100644 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 40e4a17..5a84b37 100644 +index 4e00d22..b26abcc 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S -@@ -1362,10 +1362,10 @@ handle_page_fault: +@@ -1356,10 +1356,10 @@ handle_page_fault: 11: ld r4,_DAR(r1) ld r5,_DSISR(r1) addi r3,r1,STACK_FRAME_OVERHEAD @@ -6826,10 +6830,10 @@ index 076d124..6cb2cbf 100644 - return ret; -} diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c -index 98c2fc1..b73a4ca 100644 +index 64f7bd5..8dd550f 100644 --- a/arch/powerpc/kernel/ptrace.c +++ b/arch/powerpc/kernel/ptrace.c -@@ -1781,6 +1781,10 @@ long arch_ptrace(struct task_struct *child, long request, +@@ -1783,6 +1783,10 @@ long arch_ptrace(struct task_struct *child, long request, return ret; } @@ -6840,7 +6844,7 @@ index 98c2fc1..b73a4ca 100644 /* * We must return the syscall number to actually look up in the table. * This can be -1L to skip running any syscall at all. -@@ -1793,6 +1797,11 @@ long do_syscall_trace_enter(struct pt_regs *regs) +@@ -1795,6 +1799,11 @@ long do_syscall_trace_enter(struct pt_regs *regs) secure_computing_strict(regs->gpr[0]); @@ -6852,7 +6856,7 @@ index 98c2fc1..b73a4ca 100644 if (test_thread_flag(TIF_SYSCALL_TRACE) && tracehook_report_syscall_entry(regs)) /* -@@ -1827,6 +1836,11 @@ void do_syscall_trace_leave(struct pt_regs *regs) +@@ -1829,6 +1838,11 @@ void do_syscall_trace_leave(struct pt_regs *regs) { int step; @@ -6865,10 +6869,10 @@ index 98c2fc1..b73a4ca 100644 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 201385c..0f01828 100644 +index 0f83122..c0aca6a 100644 --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c -@@ -976,7 +976,7 @@ int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka, +@@ -987,7 +987,7 @@ 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; @@ -6878,10 +6882,10 @@ index 201385c..0f01828 100644 tramp = current->mm->context.vdso_base + vdso32_rt_sigtramp; } else { diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c -index 3459473..2d40783 100644 +index 887e99d..310bc11 100644 --- a/arch/powerpc/kernel/signal_64.c +++ b/arch/powerpc/kernel/signal_64.c -@@ -749,7 +749,7 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info, +@@ -751,7 +751,7 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info, #endif /* Set up to return from userspace. */ @@ -6904,7 +6908,7 @@ index e68a845..8b140e6 100644 }; diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c -index c0e5caf..68e8305 100644 +index e4f205a..8bfffb8 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -143,6 +143,8 @@ static unsigned __kprobes long oops_begin(struct pt_regs *regs) @@ -7143,7 +7147,7 @@ index e779642..e5bb889 100644 }; diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c -index 88c0425..717feb8 100644 +index 2859a1f..74f9a6e 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -919,7 +919,7 @@ static void __init *careful_zallocation(int nid, unsigned long size, @@ -34534,10 +34538,10 @@ index edc089e..bc7c0bc 100644 pr_debug("CPU%u - ACPI performance management activated.\n", cpu); for (i = 0; i < perf->state_count; i++) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c -index 2d53f47..eb3803e 100644 +index 178fe7a..5ee8501 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c -@@ -1851,7 +1851,7 @@ static int __cpuinit cpufreq_cpu_callback(struct notifier_block *nfb, +@@ -1853,7 +1853,7 @@ static int __cpuinit cpufreq_cpu_callback(struct notifier_block *nfb, return NOTIFY_OK; } @@ -34546,7 +34550,7 @@ index 2d53f47..eb3803e 100644 .notifier_call = cpufreq_cpu_callback, }; -@@ -1883,8 +1883,11 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data) +@@ -1885,8 +1885,11 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data) pr_debug("trying to register driver %s\n", driver_data->name); @@ -34561,10 +34565,10 @@ index 2d53f47..eb3803e 100644 write_lock_irqsave(&cpufreq_driver_lock, flags); if (cpufreq_driver) { diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c -index dc9b72e..11c0302 100644 +index 5af40ad..ddf907b 100644 --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c -@@ -238,7 +238,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy, +@@ -235,7 +235,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy, struct dbs_data *dbs_data; struct od_cpu_dbs_info_s *od_dbs_info = NULL; struct cs_cpu_dbs_info_s *cs_dbs_info = NULL; @@ -34573,7 +34577,7 @@ index dc9b72e..11c0302 100644 struct od_dbs_tuners *od_tuners = NULL; struct cs_dbs_tuners *cs_tuners = NULL; struct cpu_dbs_common_info *cpu_cdbs; -@@ -301,7 +301,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy, +@@ -298,7 +298,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy, if ((cdata->governor == GOV_CONSERVATIVE) && (!policy->governor->initialized)) { @@ -34582,7 +34586,7 @@ index dc9b72e..11c0302 100644 cpufreq_register_notifier(cs_ops->notifier_block, CPUFREQ_TRANSITION_NOTIFIER); -@@ -318,7 +318,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy, +@@ -315,7 +315,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy, if ((dbs_data->cdata->governor == GOV_CONSERVATIVE) && (policy->governor->initialized == 1)) { @@ -34630,10 +34634,10 @@ index 93eb5cb..f8ab572 100644 } EXPORT_SYMBOL_GPL(od_unregister_powersave_bias_handler); diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c -index 591b6fb..2a01183 100644 +index bfd6273..e39dd63 100644 --- a/drivers/cpufreq/cpufreq_stats.c +++ b/drivers/cpufreq/cpufreq_stats.c -@@ -367,7 +367,7 @@ static int __cpuinit cpufreq_stat_cpu_callback(struct notifier_block *nfb, +@@ -365,7 +365,7 @@ static int __cpuinit cpufreq_stat_cpu_callback(struct notifier_block *nfb, } /* priority=1 so this will get called before cpufreq_remove_dev */ @@ -35680,10 +35684,10 @@ index 3c59584..500f2e9 100644 return ret; diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c -index 0aa2ef0..77c03d0 100644 +index e5e32869..1678f36 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c -@@ -679,7 +679,7 @@ static irqreturn_t valleyview_irq_handler(int irq, void *arg) +@@ -670,7 +670,7 @@ static irqreturn_t valleyview_irq_handler(int irq, void *arg) int pipe; u32 pipe_stats[I915_MAX_PIPES]; @@ -35692,7 +35696,7 @@ index 0aa2ef0..77c03d0 100644 while (true) { iir = I915_READ(VLV_IIR); -@@ -844,7 +844,7 @@ static irqreturn_t ivybridge_irq_handler(int irq, void *arg) +@@ -835,7 +835,7 @@ static irqreturn_t ivybridge_irq_handler(int irq, void *arg) irqreturn_t ret = IRQ_NONE; int i; @@ -35701,7 +35705,7 @@ index 0aa2ef0..77c03d0 100644 /* disable master interrupt before clearing iir */ de_ier = I915_READ(DEIER); -@@ -934,7 +934,7 @@ static irqreturn_t ironlake_irq_handler(int irq, void *arg) +@@ -925,7 +925,7 @@ static irqreturn_t ironlake_irq_handler(int irq, void *arg) int ret = IRQ_NONE; u32 de_iir, gt_iir, de_ier, pm_iir, sde_ier; @@ -35710,7 +35714,7 @@ index 0aa2ef0..77c03d0 100644 /* disable master interrupt before clearing iir */ de_ier = I915_READ(DEIER); -@@ -2098,7 +2098,7 @@ static void ironlake_irq_preinstall(struct drm_device *dev) +@@ -2089,7 +2089,7 @@ static void ironlake_irq_preinstall(struct drm_device *dev) { drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; @@ -35719,7 +35723,7 @@ index 0aa2ef0..77c03d0 100644 I915_WRITE(HWSTAM, 0xeffe); -@@ -2133,7 +2133,7 @@ static void valleyview_irq_preinstall(struct drm_device *dev) +@@ -2124,7 +2124,7 @@ static void valleyview_irq_preinstall(struct drm_device *dev) drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; int pipe; @@ -35728,7 +35732,7 @@ index 0aa2ef0..77c03d0 100644 /* VLV magic */ I915_WRITE(VLV_IMR, 0); -@@ -2420,7 +2420,7 @@ static void i8xx_irq_preinstall(struct drm_device * dev) +@@ -2411,7 +2411,7 @@ static void i8xx_irq_preinstall(struct drm_device * dev) drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; int pipe; @@ -35737,7 +35741,7 @@ index 0aa2ef0..77c03d0 100644 for_each_pipe(pipe) I915_WRITE(PIPESTAT(pipe), 0); -@@ -2499,7 +2499,7 @@ static irqreturn_t i8xx_irq_handler(int irq, void *arg) +@@ -2490,7 +2490,7 @@ static irqreturn_t i8xx_irq_handler(int irq, void *arg) I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; @@ -35746,7 +35750,7 @@ index 0aa2ef0..77c03d0 100644 iir = I915_READ16(IIR); if (iir == 0) -@@ -2574,7 +2574,7 @@ static void i915_irq_preinstall(struct drm_device * dev) +@@ -2565,7 +2565,7 @@ static void i915_irq_preinstall(struct drm_device * dev) drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; int pipe; @@ -35755,7 +35759,7 @@ index 0aa2ef0..77c03d0 100644 if (I915_HAS_HOTPLUG(dev)) { I915_WRITE(PORT_HOTPLUG_EN, 0); -@@ -2673,7 +2673,7 @@ static irqreturn_t i915_irq_handler(int irq, void *arg) +@@ -2664,7 +2664,7 @@ static irqreturn_t i915_irq_handler(int irq, void *arg) I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; int pipe, ret = IRQ_NONE; @@ -35764,7 +35768,7 @@ index 0aa2ef0..77c03d0 100644 iir = I915_READ(IIR); do { -@@ -2800,7 +2800,7 @@ static void i965_irq_preinstall(struct drm_device * dev) +@@ -2791,7 +2791,7 @@ static void i965_irq_preinstall(struct drm_device * dev) drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; int pipe; @@ -35773,7 +35777,7 @@ index 0aa2ef0..77c03d0 100644 I915_WRITE(PORT_HOTPLUG_EN, 0); I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); -@@ -2907,7 +2907,7 @@ static irqreturn_t i965_irq_handler(int irq, void *arg) +@@ -2898,7 +2898,7 @@ static irqreturn_t i965_irq_handler(int irq, void *arg) I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; @@ -38755,7 +38759,7 @@ index 6e17f81..140f717 100644 "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 6ddae25..514caa9 100644 +index d61eb7e..adfd00a 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1940,7 +1940,7 @@ static void end_sync_read(struct bio *bio, int error) @@ -38767,7 +38771,7 @@ index 6ddae25..514caa9 100644 &conf->mirrors[d].rdev->corrected_errors); /* for reconstruct, we always reschedule after a read. -@@ -2286,7 +2286,7 @@ static void check_decay_read_errors(struct mddev *mddev, struct md_rdev *rdev) +@@ -2292,7 +2292,7 @@ static void check_decay_read_errors(struct mddev *mddev, struct md_rdev *rdev) { struct timespec cur_time_mon; unsigned long hours_since_last; @@ -38776,7 +38780,7 @@ index 6ddae25..514caa9 100644 ktime_get_ts(&cur_time_mon); -@@ -2308,9 +2308,9 @@ static void check_decay_read_errors(struct mddev *mddev, struct md_rdev *rdev) +@@ -2314,9 +2314,9 @@ 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)) @@ -38788,7 +38792,7 @@ index 6ddae25..514caa9 100644 } static int r10_sync_page_io(struct md_rdev *rdev, sector_t sector, -@@ -2364,8 +2364,8 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10 +@@ -2370,8 +2370,8 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10 return; check_decay_read_errors(mddev, rdev); @@ -38799,7 +38803,7 @@ index 6ddae25..514caa9 100644 char b[BDEVNAME_SIZE]; bdevname(rdev->bdev, b); -@@ -2373,7 +2373,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10 +@@ -2379,7 +2379,7 @@ 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, @@ -38808,7 +38812,7 @@ index 6ddae25..514caa9 100644 printk(KERN_NOTICE "md/raid10:%s: %s: Failing raid device\n", mdname(mddev), b); -@@ -2528,7 +2528,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10 +@@ -2534,7 +2534,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10 sect + choose_data_offset(r10_bio, rdev)), bdevname(rdev->bdev, b)); @@ -42839,7 +42843,7 @@ index 4d231c1..2892c37 100644 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 2c0d0ec..4e8681a 100644 +index 3b1ea34..1583a72 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -661,7 +661,7 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd) @@ -43005,10 +43009,10 @@ index f379c7f..e8fc69c 100644 transport_setup_device(&rport->dev); diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c -index 6f6a1b4..80704a9 100644 +index 1b1125e..31a2019 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c -@@ -2918,7 +2918,7 @@ static int sd_probe(struct device *dev) +@@ -2936,7 +2936,7 @@ static int sd_probe(struct device *dev) sdkp->disk = gd; sdkp->index = index; atomic_set(&sdkp->openers, 0); @@ -49659,6 +49663,19 @@ index f0857e0..e7023c5 100644 __btrfs_std_error(root->fs_info, function, line, errno, NULL); } /* +diff --git a/fs/buffer.c b/fs/buffer.c +index d2a4d1b..df798ca 100644 +--- a/fs/buffer.c ++++ b/fs/buffer.c +@@ -3367,7 +3367,7 @@ void __init buffer_init(void) + bh_cachep = kmem_cache_create("buffer_head", + sizeof(struct buffer_head), 0, + (SLAB_RECLAIM_ACCOUNT|SLAB_PANIC| +- SLAB_MEM_SPREAD), ++ SLAB_MEM_SPREAD|SLAB_NO_SANITIZE), + NULL); + + /* diff --git a/fs/cachefiles/bind.c b/fs/cachefiles/bind.c index 622f469..e8d2d55 100644 --- a/fs/cachefiles/bind.c @@ -50650,15 +50667,16 @@ index dafafba..10b3b27 100644 EXPORT_SYMBOL(dump_write); diff --git a/fs/dcache.c b/fs/dcache.c -index f09b908..4dd10d8 100644 +index f09b908..04b9690 100644 --- a/fs/dcache.c +++ b/fs/dcache.c -@@ -3086,7 +3086,7 @@ void __init vfs_caches_init(unsigned long mempages) +@@ -3086,7 +3086,8 @@ 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); ++ SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_USERCOPY| ++ SLAB_NO_SANITIZE, NULL); dcache_init(); inode_init(); @@ -50714,7 +50732,7 @@ index e4141f2..d8263e8 100644 i += packet_length_size; if (copy_to_user(&buf[i], msg_ctx->msg, msg_ctx->msg_size)) diff --git a/fs/exec.c b/fs/exec.c -index ffd7a81..e38107f 100644 +index ffd7a81..f0afae1 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -55,8 +55,20 @@ @@ -50992,7 +51010,7 @@ index ffd7a81..e38107f 100644 + +#ifdef CONFIG_X86 + if (!ret) { -+ size = mmap_min_addr + ((mm->delta_mmap ^ mm->delta_stack) & (0xFFUL << PAGE_SHIFT)); ++ size = PAGE_SIZE + mmap_min_addr + ((mm->delta_mmap ^ mm->delta_stack) & (0xFFUL << PAGE_SHIFT)); + ret = 0 != mmap_region(NULL, 0, PAGE_ALIGN(size), vm_flags, 0); + } +#endif @@ -56832,6 +56850,63 @@ index 04ce1ac..a13dd1e 100644 generic_fillattr(inode, stat); return 0; +diff --git a/fs/super.c b/fs/super.c +index 7465d43..68307c0 100644 +--- a/fs/super.c ++++ b/fs/super.c +@@ -336,19 +336,19 @@ EXPORT_SYMBOL(deactivate_super); + * and want to turn it into a full-blown active reference. grab_super() + * is called with sb_lock held and drops it. Returns 1 in case of + * success, 0 if we had failed (superblock contents was already dead or +- * dying when grab_super() had been called). ++ * dying when grab_super() had been called). Note that this is only ++ * called for superblocks not in rundown mode (== ones still on ->fs_supers ++ * of their type), so increment of ->s_count is OK here. + */ + static int grab_super(struct super_block *s) __releases(sb_lock) + { +- if (atomic_inc_not_zero(&s->s_active)) { +- spin_unlock(&sb_lock); +- return 1; +- } +- /* it's going away */ + s->s_count++; + spin_unlock(&sb_lock); +- /* wait for it to die */ + down_write(&s->s_umount); ++ if ((s->s_flags & MS_BORN) && atomic_inc_not_zero(&s->s_active)) { ++ put_super(s); ++ return 1; ++ } + up_write(&s->s_umount); + put_super(s); + return 0; +@@ -463,11 +463,6 @@ retry: + destroy_super(s); + s = NULL; + } +- down_write(&old->s_umount); +- if (unlikely(!(old->s_flags & MS_BORN))) { +- deactivate_locked_super(old); +- goto retry; +- } + return old; + } + } +@@ -660,10 +655,10 @@ restart: + if (hlist_unhashed(&sb->s_instances)) + continue; + if (sb->s_bdev == bdev) { +- if (grab_super(sb)) /* drops sb_lock */ +- return sb; +- else ++ if (!grab_super(sb)) + goto restart; ++ up_write(&sb->s_umount); ++ return sb; + } + } + spin_unlock(&sb_lock); diff --git a/fs/sysfs/bin.c b/fs/sysfs/bin.c index 15c68f9..36a8b3e 100644 --- a/fs/sysfs/bin.c @@ -71974,10 +72049,10 @@ index dec1748..112c1f9 100644 static inline void nf_reset_trace(struct sk_buff *skb) diff --git a/include/linux/slab.h b/include/linux/slab.h -index 0c62175..9ece3d8 100644 +index 0c62175..f016ac1 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h -@@ -12,13 +12,20 @@ +@@ -12,15 +12,29 @@ #include <linux/gfp.h> #include <linux/types.h> #include <linux/workqueue.h> @@ -71998,8 +72073,17 @@ index 0c62175..9ece3d8 100644 + #define SLAB_RED_ZONE 0x00000400UL /* DEBUG: Red zone objs in a cache */ #define SLAB_POISON 0x00000800UL /* DEBUG: Poison objects */ ++ ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++#define SLAB_NO_SANITIZE 0x00001000UL /* PaX: Do not sanitize objs on free */ ++#else ++#define SLAB_NO_SANITIZE 0x00000000UL ++#endif ++ #define SLAB_HWCACHE_ALIGN 0x00002000UL /* Align objs on cache lines */ -@@ -89,10 +96,13 @@ + #define SLAB_CACHE_DMA 0x00004000UL /* Use GFP_DMA memory */ + #define SLAB_STORE_USER 0x00010000UL /* DEBUG: Store the last owner for bug hunting */ +@@ -89,10 +103,13 @@ * ZERO_SIZE_PTR can be passed to kfree though in the same way that NULL can. * Both make kfree a no-op. */ @@ -72016,7 +72100,7 @@ index 0c62175..9ece3d8 100644 struct mem_cgroup; -@@ -132,6 +142,8 @@ void * __must_check krealloc(const void *, size_t, gfp_t); +@@ -132,6 +149,8 @@ void * __must_check krealloc(const void *, size_t, gfp_t); void kfree(const void *); void kzfree(const void *); size_t ksize(const void *); @@ -72025,7 +72109,7 @@ index 0c62175..9ece3d8 100644 /* * Some archs want to perform DMA into kmalloc caches and need a guaranteed -@@ -164,7 +176,7 @@ struct kmem_cache { +@@ -164,7 +183,7 @@ struct kmem_cache { unsigned int align; /* Alignment as calculated */ unsigned long flags; /* Active flags on the slab */ const char *name; /* Slab name for sysfs */ @@ -72034,7 +72118,7 @@ index 0c62175..9ece3d8 100644 void (*ctor)(void *); /* Called on object slot creation */ struct list_head list; /* List of all slab caches on the system */ }; -@@ -226,6 +238,10 @@ extern struct kmem_cache *kmalloc_caches[KMALLOC_SHIFT_HIGH + 1]; +@@ -226,6 +245,10 @@ extern struct kmem_cache *kmalloc_caches[KMALLOC_SHIFT_HIGH + 1]; extern struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1]; #endif @@ -72045,7 +72129,7 @@ index 0c62175..9ece3d8 100644 /* * Figure out which kmalloc slab an allocation of a certain size * belongs to. -@@ -234,7 +250,7 @@ extern struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1]; +@@ -234,7 +257,7 @@ extern struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1]; * 2 = 120 .. 192 bytes * n = 2^(n-1) .. 2^n -1 */ @@ -72054,7 +72138,7 @@ index 0c62175..9ece3d8 100644 { if (!size) return 0; -@@ -406,6 +422,7 @@ void print_slabinfo_header(struct seq_file *m); +@@ -406,6 +429,7 @@ void print_slabinfo_header(struct seq_file *m); * for general use, and so are not documented here. For a full list of * potential flags, always refer to linux/gfp.h. */ @@ -72062,7 +72146,7 @@ index 0c62175..9ece3d8 100644 static inline void *kmalloc_array(size_t n, size_t size, gfp_t flags) { if (size != 0 && n > SIZE_MAX / size) -@@ -465,7 +482,7 @@ static inline void *kmem_cache_alloc_node(struct kmem_cache *cachep, +@@ -465,7 +489,7 @@ 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)) || \ (defined(CONFIG_SLOB) && defined(CONFIG_TRACING)) @@ -72071,7 +72155,7 @@ index 0c62175..9ece3d8 100644 #define kmalloc_track_caller(size, flags) \ __kmalloc_track_caller(size, flags, _RET_IP_) #else -@@ -485,7 +502,7 @@ extern void *__kmalloc_track_caller(size_t, gfp_t, unsigned long); +@@ -485,7 +509,7 @@ 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)) || \ (defined(CONFIG_SLOB) && defined(CONFIG_TRACING)) @@ -72081,7 +72165,7 @@ index 0c62175..9ece3d8 100644 __kmalloc_node_track_caller(size, flags, node, \ _RET_IP_) diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h -index cd40158..d9dc02c 100644 +index cd40158..4e2f7af 100644 --- a/include/linux/slab_def.h +++ b/include/linux/slab_def.h @@ -50,7 +50,7 @@ struct kmem_cache { @@ -72093,7 +72177,7 @@ index cd40158..d9dc02c 100644 int object_size; int align; -@@ -66,10 +66,10 @@ struct kmem_cache { +@@ -66,10 +66,14 @@ struct kmem_cache { unsigned long node_allocs; unsigned long node_frees; unsigned long node_overflow; @@ -72105,10 +72189,14 @@ index cd40158..d9dc02c 100644 + atomic_unchecked_t allocmiss; + atomic_unchecked_t freehit; + atomic_unchecked_t freemiss; ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++ atomic_unchecked_t sanitized; ++ atomic_unchecked_t not_sanitized; ++#endif /* * If debugging is enabled, then the allocator can add additional -@@ -103,7 +103,7 @@ struct kmem_cache { +@@ -103,7 +107,7 @@ struct kmem_cache { }; void *kmem_cache_alloc(struct kmem_cache *, gfp_t); @@ -72117,7 +72205,7 @@ index cd40158..d9dc02c 100644 #ifdef CONFIG_TRACING extern void *kmem_cache_alloc_trace(struct kmem_cache *, gfp_t, size_t); -@@ -136,6 +136,13 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags) +@@ -136,6 +140,13 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags) cachep = kmalloc_dma_caches[i]; else #endif @@ -72131,7 +72219,7 @@ index cd40158..d9dc02c 100644 cachep = kmalloc_caches[i]; ret = kmem_cache_alloc_trace(cachep, flags, size); -@@ -146,7 +153,7 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags) +@@ -146,7 +157,7 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags) } #ifdef CONFIG_NUMA @@ -72140,7 +72228,7 @@ index cd40158..d9dc02c 100644 extern void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node); #ifdef CONFIG_TRACING -@@ -185,6 +192,13 @@ static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node) +@@ -185,6 +196,13 @@ static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node) cachep = kmalloc_dma_caches[i]; else #endif @@ -75395,7 +75483,7 @@ index 00eb8f7..d7e3244 100644 #ifdef CONFIG_MODULE_UNLOAD { diff --git a/kernel/events/core.c b/kernel/events/core.c -index b391907..a0e2372 100644 +index e76e495..cbfe63a 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -156,8 +156,15 @@ static struct srcu_struct pmus_srcu; @@ -75424,7 +75512,7 @@ index b391907..a0e2372 100644 static void cpu_ctx_sched_out(struct perf_cpu_context *cpuctx, enum event_type_t event_type); -@@ -2725,7 +2732,7 @@ static void __perf_event_read(void *info) +@@ -2747,7 +2754,7 @@ static void __perf_event_read(void *info) static inline u64 perf_event_count(struct perf_event *event) { @@ -75433,7 +75521,7 @@ index b391907..a0e2372 100644 } static u64 perf_event_read(struct perf_event *event) -@@ -3071,9 +3078,9 @@ u64 perf_event_read_value(struct perf_event *event, u64 *enabled, u64 *running) +@@ -3093,9 +3100,9 @@ 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 + @@ -75445,7 +75533,7 @@ index b391907..a0e2372 100644 list_for_each_entry(child, &event->child_list, child_list) { total += perf_event_read(child); -@@ -3459,10 +3466,10 @@ void perf_event_update_userpage(struct perf_event *event) +@@ -3481,10 +3488,10 @@ void perf_event_update_userpage(struct perf_event *event) userpg->offset -= local64_read(&event->hw.prev_count); userpg->time_enabled = enabled + @@ -75458,7 +75546,7 @@ index b391907..a0e2372 100644 arch_perf_update_userpage(userpg, now); -@@ -4012,7 +4019,7 @@ perf_output_sample_ustack(struct perf_output_handle *handle, u64 dump_size, +@@ -4034,7 +4041,7 @@ perf_output_sample_ustack(struct perf_output_handle *handle, u64 dump_size, /* Data. */ sp = perf_user_stack_pointer(regs); @@ -75467,7 +75555,7 @@ index b391907..a0e2372 100644 dyn_size = dump_size - rem; perf_output_skip(handle, rem); -@@ -4100,11 +4107,11 @@ static void perf_output_read_one(struct perf_output_handle *handle, +@@ -4122,11 +4129,11 @@ 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 + @@ -75481,7 +75569,7 @@ index b391907..a0e2372 100644 } if (read_format & PERF_FORMAT_ID) values[n++] = primary_event_id(event); -@@ -4813,12 +4820,12 @@ static void perf_event_mmap_event(struct perf_mmap_event *mmap_event) +@@ -4835,12 +4842,12 @@ 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. */ @@ -75496,7 +75584,7 @@ index b391907..a0e2372 100644 if (IS_ERR(name)) { name = strncpy(tmp, "//toolong", sizeof(tmp)); goto got_name; -@@ -6240,7 +6247,7 @@ perf_event_alloc(struct perf_event_attr *attr, int cpu, +@@ -6262,7 +6269,7 @@ perf_event_alloc(struct perf_event_attr *attr, int cpu, event->parent = parent_event; event->ns = get_pid_ns(task_active_pid_ns(current)); @@ -75505,7 +75593,7 @@ index b391907..a0e2372 100644 event->state = PERF_EVENT_STATE_INACTIVE; -@@ -6550,6 +6557,11 @@ SYSCALL_DEFINE5(perf_event_open, +@@ -6572,6 +6579,11 @@ SYSCALL_DEFINE5(perf_event_open, if (flags & ~PERF_FLAG_ALL) return -EINVAL; @@ -75517,7 +75605,7 @@ index b391907..a0e2372 100644 err = perf_copy_attr(attr_uptr, &attr); if (err) return err; -@@ -6882,10 +6894,10 @@ static void sync_child_event(struct perf_event *child_event, +@@ -6904,10 +6916,10 @@ static void sync_child_event(struct perf_event *child_event, /* * Add back the child's count to the parent's count: */ @@ -75630,7 +75718,7 @@ index 7bb73f9..d7978ed 100644 { struct signal_struct *sig = current->signal; diff --git a/kernel/fork.c b/kernel/fork.c -index 987b28a..4e03c05 100644 +index 987b28a..e0102b2 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -319,7 +319,7 @@ static struct task_struct *dup_task_struct(struct task_struct *orig) @@ -75949,6 +76037,15 @@ index 987b28a..4e03c05 100644 if (clone_flags & CLONE_VFORK) { p->vfork_done = &vfork; init_completion(&vfork); +@@ -1723,7 +1802,7 @@ void __init proc_caches_init(void) + mm_cachep = kmem_cache_create("mm_struct", + sizeof(struct mm_struct), ARCH_MIN_MMSTRUCT_ALIGN, + SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_NOTRACK, NULL); +- vm_area_cachep = KMEM_CACHE(vm_area_struct, SLAB_PANIC); ++ vm_area_cachep = KMEM_CACHE(vm_area_struct, SLAB_PANIC | SLAB_NO_SANITIZE); + mmap_init(); + nsproxy_cache_init(); + } @@ -1763,7 +1842,7 @@ static int unshare_fs(unsigned long unshare_flags, struct fs_struct **new_fsp) return 0; @@ -77794,7 +77891,7 @@ index 98088e0..aaf95c0 100644 if (pm_wakeup_pending()) { diff --git a/kernel/printk.c b/kernel/printk.c -index 8212c1a..eb61021 100644 +index d37d45c..ab918b3 100644 --- a/kernel/printk.c +++ b/kernel/printk.c @@ -390,6 +390,11 @@ static int check_syslog_permissions(int type, bool from_file) @@ -78971,7 +79068,7 @@ index c61a614..d7f3d7e 100644 int this_cpu = smp_processor_id(); struct rq *this_rq = cpu_rq(this_cpu); diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h -index ce39224..0e09343 100644 +index ce39224d..0e09343 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -1009,7 +1009,7 @@ struct sched_class { @@ -79731,19 +79828,6 @@ index f11d83b..d016d91 100644 .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 20d6fba..09e103a 100644 ---- a/kernel/time/tick-broadcast.c -+++ b/kernel/time/tick-broadcast.c -@@ -147,7 +147,7 @@ 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_broadcast_mask); - tick_broadcast_clear_oneshot(cpu); - } else { diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index baeeb5c..c22704a 100644 --- a/kernel/time/timekeeping.c @@ -80287,10 +80371,10 @@ index e444ff8..438b8f4 100644 *data_page = bpage; diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c -index e71a8be..948710a 100644 +index 0b936d8..306a7eb 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c -@@ -3201,7 +3201,7 @@ int trace_keep_overwrite(struct tracer *tracer, u32 mask, int set) +@@ -3302,7 +3302,7 @@ int trace_keep_overwrite(struct tracer *tracer, u32 mask, int set) return 0; } @@ -80300,10 +80384,10 @@ index e71a8be..948710a 100644 /* do nothing if flag is already set */ if (!!(trace_flags & mask) == !!enabled) diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h -index 20572ed..fe55cf3 100644 +index 51b4448..7be601f 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h -@@ -1030,7 +1030,7 @@ extern const char *__stop___trace_bprintk_fmt[]; +@@ -1035,7 +1035,7 @@ extern const char *__stop___trace_bprintk_fmt[]; void trace_printk_init_buffers(void); void trace_printk_start_comm(void); int trace_keep_overwrite(struct tracer *tracer, u32 mask, int set); @@ -80313,10 +80397,10 @@ index 20572ed..fe55cf3 100644 /* * Normal trace_printk() and friends allocates special buffers diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c -index 27963e2..5a6936f 100644 +index 6dfd48b..a6d88d0 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c -@@ -1637,10 +1637,6 @@ static LIST_HEAD(ftrace_module_file_list); +@@ -1731,10 +1731,6 @@ static LIST_HEAD(ftrace_module_file_list); struct ftrace_module_file_ops { struct list_head list; struct module *mod; @@ -80327,7 +80411,7 @@ index 27963e2..5a6936f 100644 }; static struct ftrace_module_file_ops * -@@ -1681,17 +1677,12 @@ trace_create_file_ops(struct module *mod) +@@ -1775,17 +1771,12 @@ trace_create_file_ops(struct module *mod) file_ops->mod = mod; @@ -80351,7 +80435,7 @@ index 27963e2..5a6936f 100644 list_add(&file_ops->list, &ftrace_module_file_list); -@@ -1782,8 +1773,8 @@ __trace_add_new_mod_event(struct ftrace_event_call *call, +@@ -1878,8 +1869,8 @@ __trace_add_new_mod_event(struct ftrace_event_call *call, struct ftrace_module_file_ops *file_ops) { return __trace_add_new_event(call, tr, @@ -84412,7 +84496,7 @@ index fd26d04..0cea1b0 100644 if (!mm || IS_ERR(mm)) { rc = IS_ERR(mm) ? PTR_ERR(mm) : -ESRCH; diff --git a/mm/rmap.c b/mm/rmap.c -index 6280da8..ecce194 100644 +index 6280da8..b5c090e 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -163,6 +163,10 @@ int anon_vma_prepare(struct vm_area_struct *vma) @@ -84501,6 +84585,19 @@ index 6280da8..ecce194 100644 { struct anon_vma_chain *avc; struct anon_vma *anon_vma; +@@ -373,8 +407,10 @@ static void anon_vma_ctor(void *data) + void __init anon_vma_init(void) + { + anon_vma_cachep = kmem_cache_create("anon_vma", sizeof(struct anon_vma), +- 0, SLAB_DESTROY_BY_RCU|SLAB_PANIC, anon_vma_ctor); +- anon_vma_chain_cachep = KMEM_CACHE(anon_vma_chain, SLAB_PANIC); ++ 0, SLAB_DESTROY_BY_RCU|SLAB_PANIC|SLAB_NO_SANITIZE, ++ anon_vma_ctor); ++ anon_vma_chain_cachep = KMEM_CACHE(anon_vma_chain, ++ SLAB_PANIC|SLAB_NO_SANITIZE); + } + + /* diff --git a/mm/shmem.c b/mm/shmem.c index 5e6a842..b41916e 100644 --- a/mm/shmem.c @@ -84562,10 +84659,10 @@ index 5e6a842..b41916e 100644 return -ENOMEM; diff --git a/mm/slab.c b/mm/slab.c -index bd88411..8371a16 100644 +index bd88411..2d46fd6 100644 --- a/mm/slab.c +++ b/mm/slab.c -@@ -366,10 +366,10 @@ static void kmem_cache_node_init(struct kmem_cache_node *parent) +@@ -366,10 +366,12 @@ static void kmem_cache_node_init(struct kmem_cache_node *parent) if ((x)->max_freeable < i) \ (x)->max_freeable = i; \ } while (0) @@ -84577,10 +84674,21 @@ index bd88411..8371a16 100644 +#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) ++#define STATS_INC_SANITIZED(x) atomic_inc_unchecked(&(x)->sanitized) ++#define STATS_INC_NOT_SANITIZED(x) atomic_inc_unchecked(&(x)->not_sanitized) #else #define STATS_INC_ACTIVE(x) do { } while (0) #define STATS_DEC_ACTIVE(x) do { } while (0) -@@ -477,7 +477,7 @@ static inline void *index_to_obj(struct kmem_cache *cache, struct slab *slab, +@@ -386,6 +388,8 @@ static void kmem_cache_node_init(struct kmem_cache_node *parent) + #define STATS_INC_ALLOCMISS(x) do { } while (0) + #define STATS_INC_FREEHIT(x) do { } while (0) + #define STATS_INC_FREEMISS(x) do { } while (0) ++#define STATS_INC_SANITIZED(x) do { } while (0) ++#define STATS_INC_NOT_SANITIZED(x) do { } while (0) + #endif + + #if DEBUG +@@ -477,7 +481,7 @@ 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, @@ -84589,7 +84697,7 @@ index bd88411..8371a16 100644 { u32 offset = (obj - slab->s_mem); return reciprocal_divide(offset, cache->reciprocal_buffer_size); -@@ -1384,7 +1384,7 @@ static int __cpuinit cpuup_callback(struct notifier_block *nfb, +@@ -1384,7 +1388,7 @@ static int __cpuinit cpuup_callback(struct notifier_block *nfb, return notifier_from_errno(err); } @@ -84598,7 +84706,7 @@ index bd88411..8371a16 100644 &cpuup_callback, NULL, 0 }; -@@ -1565,12 +1565,12 @@ void __init kmem_cache_init(void) +@@ -1565,12 +1569,12 @@ void __init kmem_cache_init(void) */ kmalloc_caches[INDEX_AC] = create_kmalloc_cache("kmalloc-ac", @@ -84613,7 +84721,29 @@ index bd88411..8371a16 100644 slab_early_init = 0; -@@ -3800,6 +3800,7 @@ void kfree(const void *objp) +@@ -3583,6 +3587,21 @@ static inline void __cache_free(struct kmem_cache *cachep, void *objp, + struct array_cache *ac = cpu_cache_get(cachep); + + check_irq_off(); ++ ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++ if (pax_sanitize_slab) { ++ if (!(cachep->flags & (SLAB_POISON | SLAB_NO_SANITIZE))) { ++ memset(objp, PAX_MEMORY_SANITIZE_VALUE, cachep->object_size); ++ ++ if (cachep->ctor) ++ cachep->ctor(objp); ++ ++ STATS_INC_SANITIZED(cachep); ++ } else ++ STATS_INC_NOT_SANITIZED(cachep); ++ } ++#endif ++ + kmemleak_free_recursive(objp, cachep->flags); + objp = cache_free_debugcheck(cachep, objp, caller); + +@@ -3800,6 +3819,7 @@ void kfree(const void *objp) if (unlikely(ZERO_OR_NULL_PTR(objp))) return; @@ -84621,7 +84751,7 @@ index bd88411..8371a16 100644 local_irq_save(flags); kfree_debugcheck(objp); c = virt_to_cache(objp); -@@ -4241,10 +4242,10 @@ void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *cachep) +@@ -4241,14 +4261,22 @@ void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *cachep) } /* cpu stats */ { @@ -84636,7 +84766,19 @@ index bd88411..8371a16 100644 seq_printf(m, " : cpustat %6lu %6lu %6lu %6lu", allochit, allocmiss, freehit, freemiss); -@@ -4476,13 +4477,71 @@ static const struct file_operations proc_slabstats_operations = { + } ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++ { ++ unsigned long sanitized = atomic_read_unchecked(&cachep->sanitized); ++ unsigned long not_sanitized = atomic_read_unchecked(&cachep->not_sanitized); ++ ++ seq_printf(m, " : pax %6lu %6lu", sanitized, not_sanitized); ++ } ++#endif + #endif + } + +@@ -4476,13 +4504,71 @@ static const struct file_operations proc_slabstats_operations = { static int __init slab_proc_init(void) { #ifdef CONFIG_DEBUG_SLAB_LEAK @@ -84710,19 +84852,36 @@ index bd88411..8371a16 100644 * ksize - get the actual amount of memory allocated for a given object * @objp: Pointer to the object diff --git a/mm/slab.h b/mm/slab.h -index f96b49e..5634e90 100644 +index f96b49e..db1d204 100644 --- a/mm/slab.h +++ b/mm/slab.h -@@ -67,7 +67,7 @@ __kmem_cache_alias(struct mem_cgroup *memcg, const char *name, size_t size, +@@ -32,6 +32,15 @@ extern struct list_head slab_caches; + /* The slab cache that manages slab cache information */ + extern struct kmem_cache *kmem_cache; + ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++#ifdef CONFIG_X86_64 ++#define PAX_MEMORY_SANITIZE_VALUE '\xfe' ++#else ++#define PAX_MEMORY_SANITIZE_VALUE '\xff' ++#endif ++extern bool pax_sanitize_slab; ++#endif ++ + unsigned long calculate_alignment(unsigned long flags, + unsigned long align, unsigned long size); + +@@ -67,7 +76,8 @@ __kmem_cache_alias(struct mem_cgroup *memcg, const char *name, size_t size, /* Legal flag mask for kmem_cache_create(), for various configurations */ #define SLAB_CORE_FLAGS (SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA | SLAB_PANIC | \ - SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS ) -+ SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS | SLAB_USERCOPY) ++ SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS | \ ++ SLAB_USERCOPY | SLAB_NO_SANITIZE) #if defined(CONFIG_DEBUG_SLAB) #define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER) -@@ -229,6 +229,9 @@ static inline struct kmem_cache *cache_from_obj(struct kmem_cache *s, void *x) +@@ -229,6 +239,9 @@ static inline struct kmem_cache *cache_from_obj(struct kmem_cache *s, void *x) return s; page = virt_to_head_page(x); @@ -84733,10 +84892,10 @@ index f96b49e..5634e90 100644 if (slab_equal_or_root(cachep, s)) return cachep; diff --git a/mm/slab_common.c b/mm/slab_common.c -index 2d41450..e22088e 100644 +index 2d41450..4efe6ee 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c -@@ -22,7 +22,7 @@ +@@ -22,11 +22,22 @@ #include "slab.h" @@ -84745,7 +84904,22 @@ index 2d41450..e22088e 100644 LIST_HEAD(slab_caches); DEFINE_MUTEX(slab_mutex); struct kmem_cache *kmem_cache; -@@ -209,7 +209,7 @@ kmem_cache_create_memcg(struct mem_cgroup *memcg, const char *name, size_t size, + ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++bool pax_sanitize_slab __read_only = true; ++static int __init pax_sanitize_slab_setup(char *str) ++{ ++ pax_sanitize_slab = !!simple_strtol(str, NULL, 0); ++ printk("%sabled PaX slab sanitization\n", pax_sanitize_slab ? "En" : "Dis"); ++ return 1; ++} ++__setup("pax_sanitize_slab=", pax_sanitize_slab_setup); ++#endif ++ + #ifdef CONFIG_DEBUG_VM + static int kmem_cache_sanity_check(struct mem_cgroup *memcg, const char *name, + size_t size) +@@ -209,7 +220,7 @@ kmem_cache_create_memcg(struct mem_cgroup *memcg, const char *name, size_t size, err = __kmem_cache_create(s, flags); if (!err) { @@ -84754,7 +84928,7 @@ index 2d41450..e22088e 100644 list_add(&s->list, &slab_caches); memcg_cache_list_add(memcg, s); } else { -@@ -255,8 +255,7 @@ void kmem_cache_destroy(struct kmem_cache *s) +@@ -255,8 +266,7 @@ void kmem_cache_destroy(struct kmem_cache *s) get_online_cpus(); mutex_lock(&slab_mutex); @@ -84764,7 +84938,7 @@ index 2d41450..e22088e 100644 list_del(&s->list); if (!__kmem_cache_shutdown(s)) { -@@ -302,7 +301,7 @@ void __init create_boot_cache(struct kmem_cache *s, const char *name, size_t siz +@@ -302,7 +312,7 @@ void __init create_boot_cache(struct kmem_cache *s, const char *name, size_t siz panic("Creation of kmalloc slab %s size=%zu failed. Reason %d\n", name, size, err); @@ -84773,7 +84947,7 @@ index 2d41450..e22088e 100644 } struct kmem_cache *__init create_kmalloc_cache(const char *name, size_t size, -@@ -315,7 +314,7 @@ struct kmem_cache *__init create_kmalloc_cache(const char *name, size_t size, +@@ -315,7 +325,7 @@ struct kmem_cache *__init create_kmalloc_cache(const char *name, size_t size, create_boot_cache(s, name, size, flags); list_add(&s->list, &slab_caches); @@ -84782,7 +84956,7 @@ index 2d41450..e22088e 100644 return s; } -@@ -327,6 +326,11 @@ struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1]; +@@ -327,6 +337,11 @@ struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1]; EXPORT_SYMBOL(kmalloc_dma_caches); #endif @@ -84794,7 +84968,7 @@ index 2d41450..e22088e 100644 /* * Conversion table for small slabs sizes / 8 to the index in the * kmalloc array. This is necessary for slabs < 192 since we have non power -@@ -391,6 +395,13 @@ struct kmem_cache *kmalloc_slab(size_t size, gfp_t flags) +@@ -391,6 +406,13 @@ struct kmem_cache *kmalloc_slab(size_t size, gfp_t flags) return kmalloc_dma_caches[index]; #endif @@ -84808,7 +84982,7 @@ index 2d41450..e22088e 100644 return kmalloc_caches[index]; } -@@ -447,7 +458,7 @@ void __init create_kmalloc_caches(unsigned long flags) +@@ -447,7 +469,7 @@ void __init create_kmalloc_caches(unsigned long flags) for (i = KMALLOC_SHIFT_LOW; i <= KMALLOC_SHIFT_HIGH; i++) { if (!kmalloc_caches[i]) { kmalloc_caches[i] = create_kmalloc_cache(NULL, @@ -84817,7 +84991,7 @@ index 2d41450..e22088e 100644 } /* -@@ -456,10 +467,10 @@ void __init create_kmalloc_caches(unsigned long flags) +@@ -456,10 +478,10 @@ void __init create_kmalloc_caches(unsigned long flags) * earlier power of two caches */ if (KMALLOC_MIN_SIZE <= 32 && !kmalloc_caches[1] && i == 6) @@ -84830,7 +85004,7 @@ index 2d41450..e22088e 100644 } /* Kmalloc array is now usable */ -@@ -492,6 +503,23 @@ void __init create_kmalloc_caches(unsigned long flags) +@@ -492,6 +514,23 @@ void __init create_kmalloc_caches(unsigned long flags) } } #endif @@ -84854,8 +85028,18 @@ index 2d41450..e22088e 100644 } #endif /* !CONFIG_SLOB */ +@@ -516,6 +555,9 @@ void print_slabinfo_header(struct seq_file *m) + seq_puts(m, " : globalstat <listallocs> <maxobjs> <grown> <reaped> " + "<error> <maxfreeable> <nodeallocs> <remotefrees> <alienoverflow>"); + seq_puts(m, " : cpustat <allochit> <allocmiss> <freehit> <freemiss>"); ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++ seq_puts(m, " : pax <sanitized> <not_sanitized>"); ++#endif + #endif + seq_putc(m, '\n'); + } diff --git a/mm/slob.c b/mm/slob.c -index eeed4a0..c414c12 100644 +index eeed4a0..bb0e9ab 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -157,7 +157,7 @@ static void set_slob(slob_t *s, slobidx_t size, slob_t *next) @@ -84936,7 +85120,7 @@ index eeed4a0..c414c12 100644 INIT_LIST_HEAD(&sp->list); set_slob(b, SLOB_UNITS(PAGE_SIZE), b + SLOB_UNITS(PAGE_SIZE)); set_slob_page_free(sp, slob_list); -@@ -359,9 +363,7 @@ static void slob_free(void *block, int size) +@@ -359,12 +363,15 @@ static void slob_free(void *block, int size) if (slob_page_free(sp)) clear_slob_page_free(sp); spin_unlock_irqrestore(&slob_lock, flags); @@ -84947,7 +85131,15 @@ index eeed4a0..c414c12 100644 return; } -@@ -424,11 +426,10 @@ out: ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++ if (pax_sanitize_slab) ++ memset(block, PAX_MEMORY_SANITIZE_VALUE, size); ++#endif ++ + if (!slob_page_free(sp)) { + /* This slob page is about to become partially free. Easy! */ + sp->units = units; +@@ -424,11 +431,10 @@ out: */ static __always_inline void * @@ -84962,7 +85154,7 @@ index eeed4a0..c414c12 100644 gfp &= gfp_allowed_mask; -@@ -442,23 +443,41 @@ __do_kmalloc_node(size_t size, gfp_t gfp, int node, unsigned long caller) +@@ -442,23 +448,41 @@ __do_kmalloc_node(size_t size, gfp_t gfp, int node, unsigned long caller) if (!m) return NULL; @@ -85007,7 +85199,7 @@ index eeed4a0..c414c12 100644 return ret; } -@@ -493,34 +512,112 @@ void kfree(const void *block) +@@ -493,34 +517,112 @@ void kfree(const void *block) return; kmemleak_free(block); @@ -85129,7 +85321,7 @@ index eeed4a0..c414c12 100644 } EXPORT_SYMBOL(ksize); -@@ -536,23 +633,33 @@ int __kmem_cache_create(struct kmem_cache *c, unsigned long flags) +@@ -536,23 +638,33 @@ int __kmem_cache_create(struct kmem_cache *c, unsigned long flags) void *kmem_cache_alloc_node(struct kmem_cache *c, gfp_t flags, int node) { @@ -85165,7 +85357,7 @@ index eeed4a0..c414c12 100644 if (c->ctor) c->ctor(b); -@@ -564,10 +671,14 @@ EXPORT_SYMBOL(kmem_cache_alloc_node); +@@ -564,10 +676,14 @@ EXPORT_SYMBOL(kmem_cache_alloc_node); static void __kmem_cache_free(void *b, int size) { @@ -85182,7 +85374,7 @@ index eeed4a0..c414c12 100644 } static void kmem_rcu_free(struct rcu_head *head) -@@ -580,17 +691,31 @@ static void kmem_rcu_free(struct rcu_head *head) +@@ -580,17 +696,31 @@ static void kmem_rcu_free(struct rcu_head *head) void kmem_cache_free(struct kmem_cache *c, void *b) { @@ -85218,7 +85410,7 @@ index eeed4a0..c414c12 100644 EXPORT_SYMBOL(kmem_cache_free); diff --git a/mm/slub.c b/mm/slub.c -index 57707f0..c28619b 100644 +index 57707f0..7857bd3 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -198,7 +198,7 @@ struct track { @@ -85239,7 +85431,22 @@ index 57707f0..c28619b 100644 s, (void *)t->addr, jiffies - t->when, t->cpu, t->pid); #ifdef CONFIG_STACKTRACE { -@@ -2661,7 +2661,7 @@ static int slub_min_objects; +@@ -2594,6 +2594,14 @@ static __always_inline void slab_free(struct kmem_cache *s, + + slab_free_hook(s, x); + ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++ if (pax_sanitize_slab && !(s->flags & SLAB_NO_SANITIZE)) { ++ memset(x, PAX_MEMORY_SANITIZE_VALUE, s->object_size); ++ if (s->ctor) ++ s->ctor(x); ++ } ++#endif ++ + redo: + /* + * Determine the currently cpus per cpu slab. +@@ -2661,7 +2669,7 @@ 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.) */ @@ -85248,7 +85455,17 @@ index 57707f0..c28619b 100644 /* * Calculate the order of allocation given an slab object size. -@@ -3283,6 +3283,59 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node) +@@ -2938,6 +2946,9 @@ static int calculate_sizes(struct kmem_cache *s, int forced_order) + s->inuse = size; + + if (((flags & (SLAB_DESTROY_BY_RCU | SLAB_POISON)) || ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++ (pax_sanitize_slab && !(flags & SLAB_NO_SANITIZE)) || ++#endif + s->ctor)) { + /* + * Relocate free pointer after the object if it is not +@@ -3283,6 +3294,59 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node) EXPORT_SYMBOL(__kmalloc_node); #endif @@ -85308,7 +85525,7 @@ index 57707f0..c28619b 100644 size_t ksize(const void *object) { struct page *page; -@@ -3347,6 +3400,7 @@ void kfree(const void *x) +@@ -3347,6 +3411,7 @@ void kfree(const void *x) if (unlikely(ZERO_OR_NULL_PTR(x))) return; @@ -85316,7 +85533,7 @@ index 57707f0..c28619b 100644 page = virt_to_head_page(x); if (unlikely(!PageSlab(page))) { BUG_ON(!PageCompound(page)); -@@ -3652,7 +3706,7 @@ static int slab_unmergeable(struct kmem_cache *s) +@@ -3652,7 +3717,7 @@ static int slab_unmergeable(struct kmem_cache *s) /* * We may have set a slab to be unmergeable during bootstrap. */ @@ -85325,7 +85542,7 @@ index 57707f0..c28619b 100644 return 1; return 0; -@@ -3710,7 +3764,7 @@ __kmem_cache_alias(struct mem_cgroup *memcg, const char *name, size_t size, +@@ -3710,7 +3775,7 @@ __kmem_cache_alias(struct mem_cgroup *memcg, const char *name, size_t size, s = find_mergeable(memcg, size, align, flags, name, ctor); if (s) { @@ -85334,7 +85551,7 @@ index 57707f0..c28619b 100644 /* * Adjust the object sizes so that we clear * the complete object on kzalloc. -@@ -3719,7 +3773,7 @@ __kmem_cache_alias(struct mem_cgroup *memcg, const char *name, size_t size, +@@ -3719,7 +3784,7 @@ __kmem_cache_alias(struct mem_cgroup *memcg, const char *name, size_t size, s->inuse = max_t(int, s->inuse, ALIGN(size, sizeof(void *))); if (sysfs_slab_alias(s, name)) { @@ -85343,7 +85560,7 @@ index 57707f0..c28619b 100644 s = NULL; } } -@@ -3781,7 +3835,7 @@ static int __cpuinit slab_cpuup_callback(struct notifier_block *nfb, +@@ -3781,7 +3846,7 @@ static int __cpuinit slab_cpuup_callback(struct notifier_block *nfb, return NOTIFY_OK; } @@ -85352,7 +85569,7 @@ index 57707f0..c28619b 100644 .notifier_call = slab_cpuup_callback }; -@@ -3839,7 +3893,7 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags, +@@ -3839,7 +3904,7 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags, } #endif @@ -85361,7 +85578,7 @@ index 57707f0..c28619b 100644 static int count_inuse(struct page *page) { return page->inuse; -@@ -4226,12 +4280,12 @@ static void resiliency_test(void) +@@ -4226,12 +4291,12 @@ static void resiliency_test(void) validate_slab_cache(kmalloc_caches[9]); } #else @@ -85376,7 +85593,7 @@ index 57707f0..c28619b 100644 enum slab_stat_type { SL_ALL, /* All slabs */ SL_PARTIAL, /* Only partially allocated slabs */ -@@ -4475,7 +4529,7 @@ SLAB_ATTR_RO(ctor); +@@ -4475,7 +4540,7 @@ SLAB_ATTR_RO(ctor); static ssize_t aliases_show(struct kmem_cache *s, char *buf) { @@ -85385,7 +85602,7 @@ index 57707f0..c28619b 100644 } SLAB_ATTR_RO(aliases); -@@ -4563,6 +4617,14 @@ static ssize_t cache_dma_show(struct kmem_cache *s, char *buf) +@@ -4563,6 +4628,14 @@ static ssize_t cache_dma_show(struct kmem_cache *s, char *buf) SLAB_ATTR_RO(cache_dma); #endif @@ -85400,7 +85617,7 @@ index 57707f0..c28619b 100644 static ssize_t destroy_by_rcu_show(struct kmem_cache *s, char *buf) { return sprintf(buf, "%d\n", !!(s->flags & SLAB_DESTROY_BY_RCU)); -@@ -4897,6 +4959,9 @@ static struct attribute *slab_attrs[] = { +@@ -4897,6 +4970,9 @@ static struct attribute *slab_attrs[] = { #ifdef CONFIG_ZONE_DMA &cache_dma_attr.attr, #endif @@ -85410,7 +85627,7 @@ index 57707f0..c28619b 100644 #ifdef CONFIG_NUMA &remote_node_defrag_ratio_attr.attr, #endif -@@ -5128,6 +5193,7 @@ static char *create_unique_id(struct kmem_cache *s) +@@ -5128,6 +5204,7 @@ static char *create_unique_id(struct kmem_cache *s) return name; } @@ -85418,7 +85635,7 @@ index 57707f0..c28619b 100644 static int sysfs_slab_add(struct kmem_cache *s) { int err; -@@ -5151,7 +5217,7 @@ static int sysfs_slab_add(struct kmem_cache *s) +@@ -5151,7 +5228,7 @@ static int sysfs_slab_add(struct kmem_cache *s) } s->kobj.kset = slab_kset; @@ -85427,7 +85644,7 @@ index 57707f0..c28619b 100644 if (err) { kobject_put(&s->kobj); return err; -@@ -5185,6 +5251,7 @@ static void sysfs_slab_remove(struct kmem_cache *s) +@@ -5185,6 +5262,7 @@ static void sysfs_slab_remove(struct kmem_cache *s) kobject_del(&s->kobj); kobject_put(&s->kobj); } @@ -85435,7 +85652,7 @@ index 57707f0..c28619b 100644 /* * Need to buffer aliases during bootup until sysfs becomes -@@ -5198,6 +5265,7 @@ struct saved_alias { +@@ -5198,6 +5276,7 @@ struct saved_alias { static struct saved_alias *alias_list; @@ -85443,7 +85660,7 @@ index 57707f0..c28619b 100644 static int sysfs_slab_alias(struct kmem_cache *s, const char *name) { struct saved_alias *al; -@@ -5220,6 +5288,7 @@ static int sysfs_slab_alias(struct kmem_cache *s, const char *name) +@@ -5220,6 +5299,7 @@ static int sysfs_slab_alias(struct kmem_cache *s, const char *name) alias_list = al; return 0; } @@ -86924,6 +87141,28 @@ index 03795d0..eaf7368 100644 i++, cmfptr++) { struct socket *sock; +diff --git a/net/core/skbuff.c b/net/core/skbuff.c +index 1c1738c..4cab7f0 100644 +--- a/net/core/skbuff.c ++++ b/net/core/skbuff.c +@@ -3087,13 +3087,15 @@ void __init skb_init(void) + skbuff_head_cache = kmem_cache_create("skbuff_head_cache", + sizeof(struct sk_buff), + 0, +- SLAB_HWCACHE_ALIGN|SLAB_PANIC, ++ SLAB_HWCACHE_ALIGN|SLAB_PANIC| ++ SLAB_NO_SANITIZE, + NULL); + skbuff_fclone_cache = kmem_cache_create("skbuff_fclone_cache", + (2*sizeof(struct sk_buff)) + + sizeof(atomic_t), + 0, +- SLAB_HWCACHE_ALIGN|SLAB_PANIC, ++ SLAB_HWCACHE_ALIGN|SLAB_PANIC| ++ SLAB_NO_SANITIZE, + NULL); + } + diff --git a/net/core/sock.c b/net/core/sock.c index d6d024c..6ea7ab4 100644 --- a/net/core/sock.c @@ -89209,7 +89448,7 @@ index 9ca8e32..48e4a9b 100644 /* 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 98d20c0..586675b 100644 +index 514e90f..56f22bf 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -502,7 +502,7 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) @@ -92152,10 +92391,10 @@ index f5eb43d..1814de8 100644 shdr = (Elf_Shdr *)((char *)ehdr + _r(&ehdr->e_shoff)); shstrtab_sec = shdr + r2(&ehdr->e_shstrndx); diff --git a/security/Kconfig b/security/Kconfig -index e9c6ac7..66bf8e9 100644 +index e9c6ac7..0d298ea 100644 --- a/security/Kconfig +++ b/security/Kconfig -@@ -4,6 +4,945 @@ +@@ -4,6 +4,956 @@ menu "Security options" @@ -92893,21 +93132,32 @@ index e9c6ac7..66bf8e9 100644 + 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. ++ By saying Y here the kernel will erase memory pages and slab objects ++ as soon as they are freed. This in turn reduces the lifetime of data ++ stored in them, 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. ++ they ensure timely freeing of memory that may hold sensitive ++ information. ++ ++ A nice side effect of the sanitization of slab objects is the ++ reduction of possible info leaks caused by padding bytes within the ++ leaky structures. Use-after-free bugs for structures containing ++ pointers can also be detected as dereferencing the sanitized pointer ++ will generate an access violation. + + 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. + ++ To reduce the performance penalty by sanitizing pages only, albeit ++ limiting the effectiveness of this feature at the same time, slab ++ sanitization can be disabled with the kernel commandline parameter ++ "pax_sanitize_slab=0". ++ + 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. + @@ -93101,7 +93351,7 @@ index e9c6ac7..66bf8e9 100644 source security/keys/Kconfig config SECURITY_DMESG_RESTRICT -@@ -103,7 +1042,7 @@ config INTEL_TXT +@@ -103,7 +1053,7 @@ config INTEL_TXT config LSM_MMAP_MIN_ADDR int "Low address space for LSM to protect from user allocation" depends on SECURITY && SECURITY_SELINUX diff --git a/3.2.48/0000_README b/3.2.48/0000_README index 5e1d7bc..5e3379d 100644 --- a/3.2.48/0000_README +++ b/3.2.48/0000_README @@ -110,7 +110,7 @@ Patch: 1047_linux-3.2.48.patch From: http://www.kernel.org Desc: Linux 3.2.48 -Patch: 4420_grsecurity-2.9.1-3.2.48-201307212241.patch +Patch: 4420_grsecurity-2.9.1-3.2.48-201307261327.patch From: http://www.grsecurity.net Desc: hardened-sources base patch from upstream grsecurity diff --git a/3.2.48/4420_grsecurity-2.9.1-3.2.48-201307212241.patch b/3.2.48/4420_grsecurity-2.9.1-3.2.48-201307261327.patch index d9a4f00..df50f4e 100644 --- a/3.2.48/4420_grsecurity-2.9.1-3.2.48-201307212241.patch +++ b/3.2.48/4420_grsecurity-2.9.1-3.2.48-201307261327.patch @@ -200,7 +200,7 @@ index dfa6fc6..be27ac3 100644 +zconf.lex.c zoffset.h diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt -index 2ba8272..187c634 100644 +index 2ba8272..e2a9806 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -859,6 +859,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted. @@ -213,7 +213,7 @@ index 2ba8272..187c634 100644 hashdist= [KNL,NUMA] Large hashes allocated during boot are distributed across NUMA nodes. Defaults on for 64-bit NUMA, off otherwise. -@@ -1960,6 +1963,18 @@ bytes respectively. Such letter suffixes can also be entirely omitted. +@@ -1960,6 +1963,22 @@ 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. @@ -222,6 +222,10 @@ index 2ba8272..187c634 100644 + expand down segment used by UDEREF on X86-32 or the frequent + page table updates on X86-64. + ++ pax_sanitize_slab= ++ 0/1 to disable/enable slab object sanitization (enabled by ++ default). ++ + pax_softmode= 0/1 to disable/enable PaX softmode on boot already. + + pax_extra_latent_entropy @@ -6741,7 +6745,7 @@ index 42b282f..408977c 100644 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 5e4252b..05942dd 100644 +index 5e4252b..379f84f 100644 --- a/arch/sparc/kernel/sys_sparc_64.c +++ b/arch/sparc/kernel/sys_sparc_64.c @@ -119,12 +119,13 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi @@ -6884,17 +6888,31 @@ index 5e4252b..05942dd 100644 bottomup: /* -@@ -365,6 +368,10 @@ static unsigned long mmap_rnd(void) +@@ -361,10 +364,14 @@ unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, u + EXPORT_SYMBOL(get_fb_unmapped_area); + + /* Essentially the same as PowerPC. */ +-static unsigned long mmap_rnd(void) ++static unsigned long mmap_rnd(struct mm_struct *mm) { unsigned long rnd = 0UL; +#ifdef CONFIG_PAX_RANDMMAP -+ if (!(current->mm->pax_flags & MF_PAX_RANDMMAP)) ++ if (!(mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + if (current->flags & PF_RANDOMIZE) { unsigned long val = get_random_int(); if (test_thread_flag(TIF_32BIT)) +@@ -377,7 +384,7 @@ static unsigned long mmap_rnd(void) + + void arch_pick_mmap_layout(struct mm_struct *mm) + { +- unsigned long random_factor = mmap_rnd(); ++ unsigned long random_factor = mmap_rnd(mm); + unsigned long gap; + + /* @@ -390,6 +397,12 @@ void arch_pick_mmap_layout(struct mm_struct *mm) gap == RLIM_INFINITY || sysctl_legacy_va_layout) { @@ -49268,6 +49286,19 @@ index 200f63b..490b833 100644 /* * used by btrfsctl to scan devices when no FS is mounted +diff --git a/fs/buffer.c b/fs/buffer.c +index 19a4f0b..6638f5c 100644 +--- a/fs/buffer.c ++++ b/fs/buffer.c +@@ -3314,7 +3314,7 @@ void __init buffer_init(void) + bh_cachep = kmem_cache_create("buffer_head", + sizeof(struct buffer_head), 0, + (SLAB_RECLAIM_ACCOUNT|SLAB_PANIC| +- SLAB_MEM_SPREAD), ++ SLAB_MEM_SPREAD|SLAB_NO_SANITIZE), + NULL); + + /* diff --git a/fs/cachefiles/bind.c b/fs/cachefiles/bind.c index 622f469..e8d2d55 100644 --- a/fs/cachefiles/bind.c @@ -50072,7 +50103,7 @@ index 739fb59..5385976 100644 static int __init init_cramfs_fs(void) { diff --git a/fs/dcache.c b/fs/dcache.c -index d322929..ff57049 100644 +index d322929..9f4b816 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -103,11 +103,11 @@ static unsigned int d_hash_shift __read_mostly; @@ -50091,12 +50122,13 @@ index d322929..ff57049 100644 return dentry_hashtable + (hash & D_HASHMASK); } -@@ -3057,7 +3057,7 @@ void __init vfs_caches_init(unsigned long mempages) +@@ -3057,7 +3057,8 @@ 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); ++ SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_USERCOPY| ++ SLAB_NO_SANITIZE, NULL); dcache_init(); inode_init(); @@ -50229,7 +50261,7 @@ index 451b9b8..12e5a03 100644 out_free_fd: diff --git a/fs/exec.c b/fs/exec.c -index 312e297..4df82cf 100644 +index 312e297..25c839c 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -55,12 +55,35 @@ @@ -50526,7 +50558,7 @@ index 312e297..4df82cf 100644 + +#ifdef CONFIG_X86 + if (!ret) { -+ size = mmap_min_addr + ((mm->delta_mmap ^ mm->delta_stack) & (0xFFUL << PAGE_SHIFT)); ++ size = PAGE_SIZE + mmap_min_addr + ((mm->delta_mmap ^ mm->delta_stack) & (0xFFUL << PAGE_SHIFT)); + ret = 0 != mmap_region(NULL, 0, PAGE_ALIGN(size), flags, vm_flags, 0); + } +#endif @@ -57222,6 +57254,63 @@ index 7b21801..ee8fe9b 100644 generic_fillattr(inode, stat); return 0; +diff --git a/fs/super.c b/fs/super.c +index 2a698f6..056eff7 100644 +--- a/fs/super.c ++++ b/fs/super.c +@@ -295,19 +295,19 @@ EXPORT_SYMBOL(deactivate_super); + * and want to turn it into a full-blown active reference. grab_super() + * is called with sb_lock held and drops it. Returns 1 in case of + * success, 0 if we had failed (superblock contents was already dead or +- * dying when grab_super() had been called). ++ * dying when grab_super() had been called). Note that this is only ++ * called for superblocks not in rundown mode (== ones still on ->fs_supers ++ * of their type), so increment of ->s_count is OK here. + */ + static int grab_super(struct super_block *s) __releases(sb_lock) + { +- if (atomic_inc_not_zero(&s->s_active)) { +- spin_unlock(&sb_lock); +- return 1; +- } +- /* it's going away */ + s->s_count++; + spin_unlock(&sb_lock); +- /* wait for it to die */ + down_write(&s->s_umount); ++ if ((s->s_flags & MS_BORN) && atomic_inc_not_zero(&s->s_active)) { ++ put_super(s); ++ return 1; ++ } + up_write(&s->s_umount); + put_super(s); + return 0; +@@ -436,11 +436,6 @@ retry: + destroy_super(s); + s = NULL; + } +- down_write(&old->s_umount); +- if (unlikely(!(old->s_flags & MS_BORN))) { +- deactivate_locked_super(old); +- goto retry; +- } + return old; + } + } +@@ -650,10 +645,10 @@ restart: + if (list_empty(&sb->s_instances)) + continue; + if (sb->s_bdev == bdev) { +- if (grab_super(sb)) /* drops sb_lock */ +- return sb; +- else ++ if (!grab_super(sb)) + goto restart; ++ up_write(&sb->s_umount); ++ return sb; + } + } + spin_unlock(&sb_lock); diff --git a/fs/sysfs/bin.c b/fs/sysfs/bin.c index a475983..3aab767 100644 --- a/fs/sysfs/bin.c @@ -72846,10 +72935,10 @@ index efe50af..0d0b145 100644 static inline void nf_reset_trace(struct sk_buff *skb) diff --git a/include/linux/slab.h b/include/linux/slab.h -index 573c809..c643b82 100644 +index 573c809..d82a501 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h -@@ -11,12 +11,20 @@ +@@ -11,14 +11,29 @@ #include <linux/gfp.h> #include <linux/types.h> @@ -72869,8 +72958,17 @@ index 573c809..c643b82 100644 + #define SLAB_RED_ZONE 0x00000400UL /* DEBUG: Red zone objs in a cache */ #define SLAB_POISON 0x00000800UL /* DEBUG: Poison objects */ ++ ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++#define SLAB_NO_SANITIZE 0x00001000UL /* PaX: Do not sanitize objs on free */ ++#else ++#define SLAB_NO_SANITIZE 0x00000000UL ++#endif ++ #define SLAB_HWCACHE_ALIGN 0x00002000UL /* Align objs on cache lines */ -@@ -87,10 +95,13 @@ + #define SLAB_CACHE_DMA 0x00004000UL /* Use GFP_DMA memory */ + #define SLAB_STORE_USER 0x00010000UL /* DEBUG: Store the last owner for bug hunting */ +@@ -87,10 +102,22 @@ * ZERO_SIZE_PTR can be passed to kfree though in the same way that NULL can. * Both make kfree a no-op. */ @@ -72884,10 +72982,19 @@ index 573c809..c643b82 100644 -#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) ++ ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++#ifdef CONFIG_X86_64 ++#define PAX_MEMORY_SANITIZE_VALUE '\xfe' ++#else ++#define PAX_MEMORY_SANITIZE_VALUE '\xff' ++#endif ++extern bool pax_sanitize_slab; ++#endif /* * struct kmem_cache related prototypes -@@ -161,6 +172,8 @@ void * __must_check krealloc(const void *, size_t, gfp_t); +@@ -161,6 +188,8 @@ void * __must_check krealloc(const void *, size_t, gfp_t); void kfree(const void *); void kzfree(const void *); size_t ksize(const void *); @@ -72896,7 +73003,7 @@ index 573c809..c643b82 100644 /* * Allocator specific definitions. These are mainly used to establish optimized -@@ -242,7 +255,7 @@ size_t ksize(const void *); +@@ -242,7 +271,7 @@ size_t ksize(const void *); */ static inline void *kcalloc(size_t n, size_t size, gfp_t flags) { @@ -72905,7 +73012,7 @@ index 573c809..c643b82 100644 return NULL; return __kmalloc(n * size, flags | __GFP_ZERO); } -@@ -287,7 +300,7 @@ static inline void *kmem_cache_alloc_node(struct kmem_cache *cachep, +@@ -287,7 +316,7 @@ 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)) @@ -72914,7 +73021,7 @@ index 573c809..c643b82 100644 #define kmalloc_track_caller(size, flags) \ __kmalloc_track_caller(size, flags, _RET_IP_) #else -@@ -306,7 +319,7 @@ extern void *__kmalloc_track_caller(size_t, gfp_t, unsigned long); +@@ -306,7 +335,7 @@ 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)) @@ -72924,10 +73031,10 @@ index 573c809..c643b82 100644 __kmalloc_node_track_caller(size, flags, node, \ _RET_IP_) diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h -index d00e0ba..ce1f90b 100644 +index d00e0ba..a443aff 100644 --- a/include/linux/slab_def.h +++ b/include/linux/slab_def.h -@@ -68,10 +68,10 @@ struct kmem_cache { +@@ -68,10 +68,14 @@ struct kmem_cache { unsigned long node_allocs; unsigned long node_frees; unsigned long node_overflow; @@ -72939,10 +73046,14 @@ index d00e0ba..ce1f90b 100644 + atomic_unchecked_t allocmiss; + atomic_unchecked_t freehit; + atomic_unchecked_t freemiss; ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++ atomic_unchecked_t sanitized; ++ atomic_unchecked_t not_sanitized; ++#endif /* * If debugging is enabled, then the allocator can add additional -@@ -105,11 +105,16 @@ struct cache_sizes { +@@ -105,11 +109,16 @@ struct cache_sizes { #ifdef CONFIG_ZONE_DMA struct kmem_cache *cs_dmacachep; #endif @@ -72960,7 +73071,7 @@ index d00e0ba..ce1f90b 100644 #ifdef CONFIG_TRACING extern void *kmem_cache_alloc_trace(size_t size, -@@ -152,6 +157,13 @@ found: +@@ -152,6 +161,13 @@ found: cachep = malloc_sizes[i].cs_dmacachep; else #endif @@ -72974,7 +73085,7 @@ index d00e0ba..ce1f90b 100644 cachep = malloc_sizes[i].cs_cachep; ret = kmem_cache_alloc_trace(size, cachep, flags); -@@ -162,7 +174,7 @@ found: +@@ -162,7 +178,7 @@ found: } #ifdef CONFIG_NUMA @@ -72983,7 +73094,7 @@ index d00e0ba..ce1f90b 100644 extern void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node); #ifdef CONFIG_TRACING -@@ -181,6 +193,7 @@ kmem_cache_alloc_node_trace(size_t size, +@@ -181,6 +197,7 @@ kmem_cache_alloc_node_trace(size_t size, } #endif @@ -72991,7 +73102,7 @@ index d00e0ba..ce1f90b 100644 static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node) { struct kmem_cache *cachep; -@@ -205,6 +218,13 @@ found: +@@ -205,6 +222,13 @@ found: cachep = malloc_sizes[i].cs_dmacachep; else #endif @@ -76248,7 +76359,7 @@ index 234e152..0ae0243 100644 { struct signal_struct *sig = current->signal; diff --git a/kernel/fork.c b/kernel/fork.c -index ce0c182..64aeae3 100644 +index ce0c182..16fd1e0 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -270,19 +270,24 @@ static struct task_struct *dup_task_struct(struct task_struct *orig) @@ -76583,6 +76694,15 @@ index ce0c182..64aeae3 100644 if (clone_flags & CLONE_VFORK) { p->vfork_done = &vfork; init_completion(&vfork); +@@ -1591,7 +1670,7 @@ void __init proc_caches_init(void) + mm_cachep = kmem_cache_create("mm_struct", + sizeof(struct mm_struct), ARCH_MIN_MMSTRUCT_ALIGN, + SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_NOTRACK, NULL); +- vm_area_cachep = KMEM_CACHE(vm_area_struct, SLAB_PANIC); ++ vm_area_cachep = KMEM_CACHE(vm_area_struct, SLAB_PANIC | SLAB_NO_SANITIZE); + mmap_init(); + nsproxy_cache_init(); + } @@ -1630,7 +1709,7 @@ static int unshare_fs(unsigned long unshare_flags, struct fs_struct **new_fsp) return 0; @@ -83209,6 +83329,28 @@ index 4f4f53b..02d443a 100644 if (!(flags & MCL_CURRENT) || (current->mm->total_vm <= lock_limit) || capable(CAP_IPC_LOCK)) ret = do_mlockall(flags); +diff --git a/mm/mm_init.c b/mm/mm_init.c +index 1ffd97a..240aa20 100644 +--- a/mm/mm_init.c ++++ b/mm/mm_init.c +@@ -11,6 +11,17 @@ + #include <linux/export.h> + #include "internal.h" + ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++bool pax_sanitize_slab __read_only = true; ++static int __init pax_sanitize_slab_setup(char *str) ++{ ++ pax_sanitize_slab = !!simple_strtol(str, NULL, 0); ++ printk("%sabled PaX slab sanitization\n", pax_sanitize_slab ? "En" : "Dis"); ++ return 1; ++} ++__setup("pax_sanitize_slab=", pax_sanitize_slab_setup); ++#endif ++ + #ifdef CONFIG_DEBUG_MEMORY_INIT + int mminit_loglevel; + diff --git a/mm/mmap.c b/mm/mmap.c index dff37a6..0e57094 100644 --- a/mm/mmap.c @@ -85321,7 +85463,7 @@ index 70e814a..38e1f43 100644 rc = process_vm_rw_single_vec( (unsigned long)rvec[i].iov_base, rvec[i].iov_len, diff --git a/mm/rmap.c b/mm/rmap.c -index 8685697..b490361 100644 +index 8685697..e047d10 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -153,6 +153,10 @@ int anon_vma_prepare(struct vm_area_struct *vma) @@ -85413,6 +85555,19 @@ index 8685697..b490361 100644 { struct anon_vma_chain *avc; struct anon_vma *anon_vma; +@@ -381,8 +418,10 @@ static void anon_vma_ctor(void *data) + void __init anon_vma_init(void) + { + anon_vma_cachep = kmem_cache_create("anon_vma", sizeof(struct anon_vma), +- 0, SLAB_DESTROY_BY_RCU|SLAB_PANIC, anon_vma_ctor); +- anon_vma_chain_cachep = KMEM_CACHE(anon_vma_chain, SLAB_PANIC); ++ 0, SLAB_DESTROY_BY_RCU|SLAB_PANIC|SLAB_NO_SANITIZE, ++ anon_vma_ctor); ++ anon_vma_chain_cachep = KMEM_CACHE(anon_vma_chain, ++ SLAB_PANIC|SLAB_NO_SANITIZE); + } + + /* diff --git a/mm/shmem.c b/mm/shmem.c index a78acf0..a31df98 100644 --- a/mm/shmem.c @@ -85474,7 +85629,7 @@ index a78acf0..a31df98 100644 return -ENOMEM; diff --git a/mm/slab.c b/mm/slab.c -index 4c3b671..020b6bb 100644 +index 4c3b671..884702c 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -151,7 +151,7 @@ @@ -85482,19 +85637,21 @@ index 4c3b671..020b6bb 100644 /* Legal flag mask for kmem_cache_create(). */ #if DEBUG -# define CREATE_MASK (SLAB_RED_ZONE | \ -+# define CREATE_MASK (SLAB_USERCOPY | SLAB_RED_ZONE | \ ++# define CREATE_MASK (SLAB_USERCOPY | SLAB_NO_SANITIZE | SLAB_RED_ZONE | \ SLAB_POISON | SLAB_HWCACHE_ALIGN | \ SLAB_CACHE_DMA | \ SLAB_STORE_USER | \ -@@ -159,7 +159,7 @@ +@@ -159,8 +159,8 @@ 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_CACHE_DMA | \ ++# define CREATE_MASK (SLAB_USERCOPY | SLAB_NO_SANITIZE | \ ++ SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA | \ SLAB_RECLAIM_ACCOUNT | SLAB_PANIC | \ SLAB_DESTROY_BY_RCU | SLAB_MEM_SPREAD | \ + SLAB_DEBUG_OBJECTS | SLAB_NOLEAKTRACE | SLAB_NOTRACK) @@ -288,7 +288,7 @@ struct kmem_list3 { * Need this for bootstrapping a per node allocator. */ @@ -85504,7 +85661,7 @@ index 4c3b671..020b6bb 100644 #define CACHE_CACHE 0 #define SIZE_AC MAX_NUMNODES #define SIZE_L3 (2 * MAX_NUMNODES) -@@ -389,10 +389,10 @@ static void kmem_list3_init(struct kmem_list3 *parent) +@@ -389,10 +389,12 @@ static void kmem_list3_init(struct kmem_list3 *parent) if ((x)->max_freeable < i) \ (x)->max_freeable = i; \ } while (0) @@ -85516,10 +85673,21 @@ index 4c3b671..020b6bb 100644 +#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) ++#define STATS_INC_SANITIZED(x) atomic_inc_unchecked(&(x)->sanitized) ++#define STATS_INC_NOT_SANITIZED(x) atomic_inc_unchecked(&(x)->not_sanitized) #else #define STATS_INC_ACTIVE(x) do { } while (0) #define STATS_DEC_ACTIVE(x) do { } while (0) -@@ -538,7 +538,7 @@ static inline void *index_to_obj(struct kmem_cache *cache, struct slab *slab, +@@ -409,6 +411,8 @@ static void kmem_list3_init(struct kmem_list3 *parent) + #define STATS_INC_ALLOCMISS(x) do { } while (0) + #define STATS_INC_FREEHIT(x) do { } while (0) + #define STATS_INC_FREEMISS(x) do { } while (0) ++#define STATS_INC_SANITIZED(x) do { } while (0) ++#define STATS_INC_NOT_SANITIZED(x) do { } while (0) + #endif + + #if DEBUG +@@ -538,7 +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, @@ -85528,7 +85696,7 @@ index 4c3b671..020b6bb 100644 { u32 offset = (obj - slab->s_mem); return reciprocal_divide(offset, cache->reciprocal_buffer_size); -@@ -559,12 +559,13 @@ EXPORT_SYMBOL(malloc_sizes); +@@ -559,12 +563,13 @@ EXPORT_SYMBOL(malloc_sizes); struct cache_names { char *name; char *name_dma; @@ -85544,7 +85712,7 @@ index 4c3b671..020b6bb 100644 #undef CACHE }; -@@ -752,6 +753,12 @@ static inline struct kmem_cache *__find_general_cachep(size_t size, +@@ -752,6 +757,12 @@ static inline struct kmem_cache *__find_general_cachep(size_t size, if (unlikely(gfpflags & GFP_DMA)) return csizep->cs_dmacachep; #endif @@ -85557,7 +85725,7 @@ index 4c3b671..020b6bb 100644 return csizep->cs_cachep; } -@@ -1370,7 +1377,7 @@ static int __cpuinit cpuup_callback(struct notifier_block *nfb, +@@ -1370,7 +1381,7 @@ static int __cpuinit cpuup_callback(struct notifier_block *nfb, return notifier_from_errno(err); } @@ -85566,7 +85734,7 @@ index 4c3b671..020b6bb 100644 &cpuup_callback, NULL, 0 }; -@@ -1572,7 +1579,7 @@ void __init kmem_cache_init(void) +@@ -1572,7 +1583,7 @@ 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, @@ -85575,7 +85743,7 @@ index 4c3b671..020b6bb 100644 NULL); if (INDEX_AC != INDEX_L3) { -@@ -1580,7 +1587,7 @@ void __init kmem_cache_init(void) +@@ -1580,7 +1591,7 @@ void __init kmem_cache_init(void) kmem_cache_create(names[INDEX_L3].name, sizes[INDEX_L3].cs_size, ARCH_KMALLOC_MINALIGN, @@ -85584,7 +85752,7 @@ index 4c3b671..020b6bb 100644 NULL); } -@@ -1598,7 +1605,7 @@ void __init kmem_cache_init(void) +@@ -1598,7 +1609,7 @@ void __init kmem_cache_init(void) sizes->cs_cachep = kmem_cache_create(names->name, sizes->cs_size, ARCH_KMALLOC_MINALIGN, @@ -85593,7 +85761,7 @@ index 4c3b671..020b6bb 100644 NULL); } #ifdef CONFIG_ZONE_DMA -@@ -1610,6 +1617,16 @@ void __init kmem_cache_init(void) +@@ -1610,6 +1621,16 @@ void __init kmem_cache_init(void) SLAB_PANIC, NULL); #endif @@ -85610,7 +85778,29 @@ index 4c3b671..020b6bb 100644 sizes++; names++; } -@@ -3879,6 +3896,7 @@ void kfree(const void *objp) +@@ -3662,6 +3683,21 @@ static inline void __cache_free(struct kmem_cache *cachep, void *objp, + struct array_cache *ac = cpu_cache_get(cachep); + + check_irq_off(); ++ ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++ if (pax_sanitize_slab) { ++ if (!(cachep->flags & (SLAB_POISON | SLAB_NO_SANITIZE))) { ++ memset(objp, PAX_MEMORY_SANITIZE_VALUE, obj_size(cachep)); ++ ++ if (cachep->ctor) ++ cachep->ctor(objp); ++ ++ STATS_INC_SANITIZED(cachep); ++ } else ++ STATS_INC_NOT_SANITIZED(cachep); ++ } ++#endif ++ + kmemleak_free_recursive(objp, cachep->flags); + objp = cache_free_debugcheck(cachep, objp, caller); + +@@ -3879,6 +3915,7 @@ void kfree(const void *objp) if (unlikely(ZERO_OR_NULL_PTR(objp))) return; @@ -85618,7 +85808,17 @@ index 4c3b671..020b6bb 100644 local_irq_save(flags); kfree_debugcheck(objp); c = virt_to_cache(objp); -@@ -4325,10 +4343,10 @@ static int s_show(struct seq_file *m, void *p) +@@ -4216,6 +4253,9 @@ static void print_slabinfo_header(struct seq_file *m) + seq_puts(m, " : globalstat <listallocs> <maxobjs> <grown> <reaped> " + "<error> <maxfreeable> <nodeallocs> <remotefrees> <alienoverflow>"); + seq_puts(m, " : cpustat <allochit> <allocmiss> <freehit> <freemiss>"); ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++ seq_puts(m, " : pax <sanitized> <not_sanitized>"); ++#endif + #endif + seq_putc(m, '\n'); + } +@@ -4325,14 +4365,22 @@ static int s_show(struct seq_file *m, void *p) } /* cpu stats */ { @@ -85633,7 +85833,19 @@ index 4c3b671..020b6bb 100644 seq_printf(m, " : cpustat %6lu %6lu %6lu %6lu", allochit, allocmiss, freehit, freemiss); -@@ -4587,13 +4605,71 @@ static int __init slab_proc_init(void) + } ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++ { ++ unsigned long sanitized = atomic_read_unchecked(&cachep->sanitized); ++ unsigned long not_sanitized = atomic_read_unchecked(&cachep->not_sanitized); ++ ++ seq_printf(m, " : pax %6lu %6lu", sanitized, not_sanitized); ++ } ++#endif + #endif + seq_putc(m, '\n'); + return 0; +@@ -4587,13 +4635,71 @@ static int __init slab_proc_init(void) { proc_create("slabinfo",S_IWUSR|S_IRUSR,NULL,&proc_slabinfo_operations); #ifdef CONFIG_DEBUG_SLAB_LEAK @@ -85707,7 +85919,7 @@ index 4c3b671..020b6bb 100644 * 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..e1af823 100644 +index 8105be4..8c1ce34 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -29,7 +29,7 @@ @@ -85804,7 +86016,19 @@ index 8105be4..e1af823 100644 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 +477,9 @@ out: +@@ -418,6 +419,11 @@ static void slob_free(void *block, int size) + return; + } + ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++ if (pax_sanitize_slab) ++ memset(block, PAX_MEMORY_SANITIZE_VALUE, size); ++#endif ++ + if (!slob_page_free(sp)) { + /* This slob page is about to become partially free. Easy! */ + sp->units = units; +@@ -476,10 +482,9 @@ out: * End of slob allocator proper. Begin kmem_cache_alloc and kmalloc frontend. */ @@ -85817,7 +86041,7 @@ index 8105be4..e1af823 100644 void *ret; gfp &= gfp_allowed_mask; -@@ -494,7 +494,10 @@ void *__kmalloc_node(size_t size, gfp_t gfp, int node) +@@ -494,7 +499,10 @@ void *__kmalloc_node(size_t size, gfp_t gfp, int node) if (!m) return NULL; @@ -85829,7 +86053,7 @@ index 8105be4..e1af823 100644 ret = (void *)m + align; trace_kmalloc_node(_RET_IP_, ret, -@@ -506,16 +509,25 @@ void *__kmalloc_node(size_t size, gfp_t gfp, int node) +@@ -506,16 +514,25 @@ void *__kmalloc_node(size_t size, gfp_t gfp, int node) gfp |= __GFP_COMP; ret = slob_new_pages(gfp, order, node); if (ret) { @@ -85859,7 +86083,7 @@ index 8105be4..e1af823 100644 return ret; } EXPORT_SYMBOL(__kmalloc_node); -@@ -530,16 +542,92 @@ void kfree(const void *block) +@@ -530,16 +547,92 @@ void kfree(const void *block) return; kmemleak_free(block); @@ -85955,7 +86179,7 @@ index 8105be4..e1af823 100644 /* can't use ksize for kmem_cache_alloc memory, only kmalloc */ size_t ksize(const void *block) { -@@ -552,10 +640,10 @@ 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); @@ -85969,7 +86193,7 @@ index 8105be4..e1af823 100644 } EXPORT_SYMBOL(ksize); -@@ -571,8 +659,13 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size, +@@ -571,8 +664,13 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size, { struct kmem_cache *c; @@ -85983,7 +86207,7 @@ index 8105be4..e1af823 100644 if (c) { c->name = name; -@@ -614,17 +707,25 @@ void *kmem_cache_alloc_node(struct kmem_cache *c, gfp_t flags, int node) +@@ -614,17 +712,25 @@ void *kmem_cache_alloc_node(struct kmem_cache *c, gfp_t flags, int node) lockdep_trace_alloc(flags); @@ -86009,7 +86233,7 @@ index 8105be4..e1af823 100644 if (c->ctor) c->ctor(b); -@@ -636,10 +737,16 @@ EXPORT_SYMBOL(kmem_cache_alloc_node); +@@ -636,10 +742,16 @@ EXPORT_SYMBOL(kmem_cache_alloc_node); static void __kmem_cache_free(void *b, int size) { @@ -86028,7 +86252,7 @@ index 8105be4..e1af823 100644 } static void kmem_rcu_free(struct rcu_head *head) -@@ -652,17 +759,31 @@ 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) { @@ -86064,7 +86288,7 @@ index 8105be4..e1af823 100644 EXPORT_SYMBOL(kmem_cache_free); diff --git a/mm/slub.c b/mm/slub.c -index 5710788..12ea6c9 100644 +index 5710788..3d095c0 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -186,7 +186,7 @@ static enum { @@ -86094,7 +86318,22 @@ index 5710788..12ea6c9 100644 s, (void *)t->addr, jiffies - t->when, t->cpu, t->pid); #ifdef CONFIG_STACKTRACE { -@@ -2572,6 +2572,8 @@ void kmem_cache_free(struct kmem_cache *s, void *x) +@@ -2537,6 +2537,14 @@ static __always_inline void slab_free(struct kmem_cache *s, + + slab_free_hook(s, x); + ++#ifdef CONFIG_PAX_MEMORY_SANITIZE ++ if (pax_sanitize_slab && !(s->flags & SLAB_NO_SANITIZE)) { ++ memset(x, PAX_MEMORY_SANITIZE_VALUE, s->objsize); ++ if (s->ctor) ++ s->ctor(x); ++ } ++#endif ++ + redo: + /* + * Determine the currently cpus per cpu slab. +@@ -2572,6 +2580,8 @@ void kmem_cache_free(struct kmem_cache *s, void *x) page = virt_to_head_page(x); @@ -86103,7 +86342,7 @@ index 5710788..12ea6c9 100644 slab_free(s, page, x, _RET_IP_); trace_kmem_cache_free(_RET_IP_, x); -@@ -2605,7 +2607,7 @@ static int slub_min_objects; +@@ -2605,7 +2615,7 @@ 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.) */ @@ -86112,7 +86351,7 @@ index 5710788..12ea6c9 100644 /* * Calculate the order of allocation given an slab object size. -@@ -3055,7 +3057,7 @@ static int kmem_cache_open(struct kmem_cache *s, +@@ -3055,7 +3065,7 @@ static int kmem_cache_open(struct kmem_cache *s, else s->cpu_partial = 30; @@ -86121,7 +86360,7 @@ index 5710788..12ea6c9 100644 #ifdef CONFIG_NUMA s->remote_node_defrag_ratio = 1000; #endif -@@ -3159,8 +3161,7 @@ static inline int kmem_cache_close(struct kmem_cache *s) +@@ -3159,8 +3169,7 @@ static inline int kmem_cache_close(struct kmem_cache *s) void kmem_cache_destroy(struct kmem_cache *s) { down_write(&slub_lock); @@ -86131,7 +86370,7 @@ index 5710788..12ea6c9 100644 list_del(&s->list); up_write(&slub_lock); if (kmem_cache_close(s)) { -@@ -3189,6 +3190,10 @@ static struct kmem_cache *kmem_cache; +@@ -3189,6 +3198,10 @@ static struct kmem_cache *kmem_cache; static struct kmem_cache *kmalloc_dma_caches[SLUB_PAGE_SHIFT]; #endif @@ -86142,7 +86381,7 @@ index 5710788..12ea6c9 100644 static int __init setup_slub_min_order(char *str) { get_option(&str, &slub_min_order); -@@ -3303,6 +3308,13 @@ static struct kmem_cache *get_slab(size_t size, gfp_t flags) +@@ -3303,6 +3316,13 @@ static struct kmem_cache *get_slab(size_t size, gfp_t flags) return kmalloc_dma_caches[index]; #endif @@ -86156,7 +86395,7 @@ index 5710788..12ea6c9 100644 return kmalloc_caches[index]; } -@@ -3371,6 +3383,59 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node) +@@ -3371,6 +3391,59 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node) EXPORT_SYMBOL(__kmalloc_node); #endif @@ -86216,7 +86455,7 @@ index 5710788..12ea6c9 100644 size_t ksize(const void *object) { struct page *page; -@@ -3435,6 +3500,7 @@ void kfree(const void *x) +@@ -3435,6 +3508,7 @@ void kfree(const void *x) if (unlikely(ZERO_OR_NULL_PTR(x))) return; @@ -86224,7 +86463,7 @@ index 5710788..12ea6c9 100644 page = virt_to_head_page(x); if (unlikely(!PageSlab(page))) { BUG_ON(!PageCompound(page)); -@@ -3645,7 +3711,7 @@ static void __init kmem_cache_bootstrap_fixup(struct kmem_cache *s) +@@ -3645,7 +3719,7 @@ static void __init kmem_cache_bootstrap_fixup(struct kmem_cache *s) int node; list_add(&s->list, &slab_caches); @@ -86233,7 +86472,7 @@ index 5710788..12ea6c9 100644 for_each_node_state(node, N_NORMAL_MEMORY) { struct kmem_cache_node *n = get_node(s, node); -@@ -3762,17 +3828,17 @@ void __init kmem_cache_init(void) +@@ -3762,17 +3836,17 @@ void __init kmem_cache_init(void) /* Caches that are not of the two-to-the-power-of size */ if (KMALLOC_MIN_SIZE <= 32) { @@ -86254,7 +86493,7 @@ index 5710788..12ea6c9 100644 caches++; } -@@ -3814,6 +3880,22 @@ void __init kmem_cache_init(void) +@@ -3814,6 +3888,22 @@ void __init kmem_cache_init(void) } } #endif @@ -86277,7 +86516,7 @@ index 5710788..12ea6c9 100644 printk(KERN_INFO "SLUB: Genslabs=%d, HWalign=%d, Order=%d-%d, MinObjects=%d," " CPUs=%d, Nodes=%d\n", -@@ -3840,7 +3922,7 @@ static int slab_unmergeable(struct kmem_cache *s) +@@ -3840,7 +3930,7 @@ static int slab_unmergeable(struct kmem_cache *s) /* * We may have set a slab to be unmergeable during bootstrap. */ @@ -86286,7 +86525,7 @@ index 5710788..12ea6c9 100644 return 1; return 0; -@@ -3899,7 +3981,7 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size, +@@ -3899,7 +3989,7 @@ 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) { @@ -86295,7 +86534,7 @@ index 5710788..12ea6c9 100644 /* * Adjust the object sizes so that we clear * the complete object on kzalloc. -@@ -3908,7 +3990,7 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size, +@@ -3908,7 +3998,7 @@ 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)) { @@ -86304,7 +86543,7 @@ index 5710788..12ea6c9 100644 goto err; } up_write(&slub_lock); -@@ -3979,7 +4061,7 @@ static int __cpuinit slab_cpuup_callback(struct notifier_block *nfb, +@@ -3979,7 +4069,7 @@ static int __cpuinit slab_cpuup_callback(struct notifier_block *nfb, return NOTIFY_OK; } @@ -86313,7 +86552,7 @@ index 5710788..12ea6c9 100644 .notifier_call = slab_cpuup_callback }; -@@ -4037,7 +4119,7 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags, +@@ -4037,7 +4127,7 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags, } #endif @@ -86322,7 +86561,7 @@ index 5710788..12ea6c9 100644 static int count_inuse(struct page *page) { return page->inuse; -@@ -4424,12 +4506,12 @@ static void resiliency_test(void) +@@ -4424,12 +4514,12 @@ static void resiliency_test(void) validate_slab_cache(kmalloc_caches[9]); } #else @@ -86337,7 +86576,7 @@ index 5710788..12ea6c9 100644 enum slab_stat_type { SL_ALL, /* All slabs */ SL_PARTIAL, /* Only partially allocated slabs */ -@@ -4670,7 +4752,7 @@ SLAB_ATTR_RO(ctor); +@@ -4670,7 +4760,7 @@ SLAB_ATTR_RO(ctor); static ssize_t aliases_show(struct kmem_cache *s, char *buf) { @@ -86346,7 +86585,7 @@ index 5710788..12ea6c9 100644 } SLAB_ATTR_RO(aliases); -@@ -5237,6 +5319,7 @@ static char *create_unique_id(struct kmem_cache *s) +@@ -5237,6 +5327,7 @@ static char *create_unique_id(struct kmem_cache *s) return name; } @@ -86354,7 +86593,7 @@ index 5710788..12ea6c9 100644 static int sysfs_slab_add(struct kmem_cache *s) { int err; -@@ -5265,7 +5348,7 @@ static int sysfs_slab_add(struct kmem_cache *s) +@@ -5265,7 +5356,7 @@ static int sysfs_slab_add(struct kmem_cache *s) } s->kobj.kset = slab_kset; @@ -86363,7 +86602,7 @@ index 5710788..12ea6c9 100644 if (err) { kobject_put(&s->kobj); return err; -@@ -5299,6 +5382,7 @@ static void sysfs_slab_remove(struct kmem_cache *s) +@@ -5299,6 +5390,7 @@ static void sysfs_slab_remove(struct kmem_cache *s) kobject_del(&s->kobj); kobject_put(&s->kobj); } @@ -86371,7 +86610,7 @@ index 5710788..12ea6c9 100644 /* * Need to buffer aliases during bootup until sysfs becomes -@@ -5312,6 +5396,7 @@ struct saved_alias { +@@ -5312,6 +5404,7 @@ struct saved_alias { static struct saved_alias *alias_list; @@ -86379,7 +86618,7 @@ index 5710788..12ea6c9 100644 static int sysfs_slab_alias(struct kmem_cache *s, const char *name) { struct saved_alias *al; -@@ -5334,6 +5419,7 @@ static int sysfs_slab_alias(struct kmem_cache *s, const char *name) +@@ -5334,6 +5427,7 @@ static int sysfs_slab_alias(struct kmem_cache *s, const char *name) alias_list = al; return 0; } @@ -88115,6 +88354,28 @@ index 925991a..209a505 100644 #ifdef CONFIG_INET static u32 seq_scale(u32 seq) +diff --git a/net/core/skbuff.c b/net/core/skbuff.c +index af9c3c6..76914a3 100644 +--- a/net/core/skbuff.c ++++ b/net/core/skbuff.c +@@ -2902,13 +2902,15 @@ void __init skb_init(void) + skbuff_head_cache = kmem_cache_create("skbuff_head_cache", + sizeof(struct sk_buff), + 0, +- SLAB_HWCACHE_ALIGN|SLAB_PANIC, ++ SLAB_HWCACHE_ALIGN|SLAB_PANIC| ++ SLAB_NO_SANITIZE, + NULL); + skbuff_fclone_cache = kmem_cache_create("skbuff_fclone_cache", + (2*sizeof(struct sk_buff)) + + sizeof(atomic_t), + 0, +- SLAB_HWCACHE_ALIGN|SLAB_PANIC, ++ SLAB_HWCACHE_ALIGN|SLAB_PANIC| ++ SLAB_NO_SANITIZE, + NULL); + } + diff --git a/net/core/sock.c b/net/core/sock.c index 8a2c2dd..3ba3cf1 100644 --- a/net/core/sock.c @@ -94052,10 +94313,10 @@ index 38f6617..e70b72b 100755 exuberant() diff --git a/security/Kconfig b/security/Kconfig -index 51bd5a0..999fbad 100644 +index 51bd5a0..2ae77cf 100644 --- a/security/Kconfig +++ b/security/Kconfig -@@ -4,6 +4,945 @@ +@@ -4,6 +4,956 @@ menu "Security options" @@ -94792,21 +95053,32 @@ index 51bd5a0..999fbad 100644 + 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. ++ By saying Y here the kernel will erase memory pages and slab objects ++ as soon as they are freed. This in turn reduces the lifetime of data ++ stored in them, 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. ++ they ensure timely freeing of memory that may hold sensitive ++ information. ++ ++ A nice side effect of the sanitization of slab objects is the ++ reduction of possible info leaks caused by padding bytes within the ++ leaky structures. Use-after-free bugs for structures containing ++ pointers can also be detected as dereferencing the sanitized pointer ++ will generate an access violation. + + 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. + ++ To reduce the performance penalty by sanitizing pages only, albeit ++ limiting the effectiveness of this feature at the same time, slab ++ sanitization can be disabled with the kernel commandline parameter ++ "pax_sanitize_slab=0". ++ + 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. + @@ -95001,7 +95273,7 @@ index 51bd5a0..999fbad 100644 config KEYS bool "Enable access key retention support" help -@@ -169,7 +1108,7 @@ config INTEL_TXT +@@ -169,7 +1119,7 @@ config INTEL_TXT config LSM_MMAP_MIN_ADDR int "Low address space for LSM to protect from user allocation" depends on SECURITY && SECURITY_SELINUX |