From: Andrey Konovalov <andreyknvl@google.com> To: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com>, Vincenzo Frascino <vincenzo.frascino@arm.com>, Dmitry Vyukov <dvyukov@google.com>, Andrey Ryabinin <aryabinin@virtuozzo.com>, Alexander Potapenko <glider@google.com>, Marco Elver <elver@google.com>, Evgenii Stepanov <eugenis@google.com>, Branislav Rankov <Branislav.Rankov@arm.com>, Kevin Brodsky <kevin.brodsky@arm.com>, Andrew Morton <akpm@linux-foundation.org>, kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrey Konovalov <andreyknvl@google.com> Subject: [PATCH v9 41/44] kasan, mm: reset tags when accessing metadata Date: Tue, 10 Nov 2020 23:10:38 +0100 [thread overview] Message-ID: <d0060171a76ace31b26fef1f2713da209099fb99.1605046192.git.andreyknvl@google.com> (raw) In-Reply-To: <cover.1605046192.git.andreyknvl@google.com> Kernel allocator code accesses metadata for slab objects, that may lie out-of-bounds of the object itself, or be accessed when an object is freed. Such accesses trigger tag faults and lead to false-positive reports with hardware tag-based KASAN. Software KASAN modes disable instrumentation for allocator code via KASAN_SANITIZE Makefile macro, and rely on kasan_enable/disable_current() annotations which are used to ignore KASAN reports. With hardware tag-based KASAN neither of those options are available, as it doesn't use compiler instrumetation, no tag faults are ignored, and MTE is disabled after the first one. Instead, reset tags when accessing metadata (currently only for SLUB). Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Acked-by: Marco Elver <elver@google.com> --- Change-Id: I39f3c4d4f29299d4fbbda039bedf230db1c746fb --- mm/page_alloc.c | 4 +++- mm/page_poison.c | 2 +- mm/slub.c | 29 ++++++++++++++++------------- 3 files changed, 20 insertions(+), 15 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 24b45261e2bd..f1648aee8d88 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1195,8 +1195,10 @@ static void kernel_init_free_pages(struct page *page, int numpages) /* s390's use of memset() could override KASAN redzones. */ kasan_disable_current(); - for (i = 0; i < numpages; i++) + for (i = 0; i < numpages; i++) { + page_kasan_tag_reset(page + i); clear_highpage(page + i); + } kasan_enable_current(); } diff --git a/mm/page_poison.c b/mm/page_poison.c index ae0482cded87..e6c994af7518 100644 --- a/mm/page_poison.c +++ b/mm/page_poison.c @@ -53,7 +53,7 @@ static void poison_page(struct page *page) /* KASAN still think the page is in-use, so skip it. */ kasan_disable_current(); - memset(addr, PAGE_POISON, PAGE_SIZE); + memset(kasan_reset_tag(addr), PAGE_POISON, PAGE_SIZE); kasan_enable_current(); kunmap_atomic(addr); } diff --git a/mm/slub.c b/mm/slub.c index b30be2385d1c..df2fd5b57df1 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -249,7 +249,7 @@ static inline void *freelist_ptr(const struct kmem_cache *s, void *ptr, { #ifdef CONFIG_SLAB_FREELIST_HARDENED /* - * When CONFIG_KASAN_SW_TAGS is enabled, ptr_addr might be tagged. + * When CONFIG_KASAN_SW/HW_TAGS is enabled, ptr_addr might be tagged. * Normally, this doesn't cause any issues, as both set_freepointer() * and get_freepointer() are called with a pointer with the same tag. * However, there are some issues with CONFIG_SLUB_DEBUG code. For @@ -275,6 +275,7 @@ static inline void *freelist_dereference(const struct kmem_cache *s, static inline void *get_freepointer(struct kmem_cache *s, void *object) { + object = kasan_reset_tag(object); return freelist_dereference(s, object + s->offset); } @@ -304,6 +305,7 @@ static inline void set_freepointer(struct kmem_cache *s, void *object, void *fp) BUG_ON(object == fp); /* naive detection of double free or corruption */ #endif + freeptr_addr = (unsigned long)kasan_reset_tag((void *)freeptr_addr); *(void **)freeptr_addr = freelist_ptr(s, fp, freeptr_addr); } @@ -538,8 +540,8 @@ static void print_section(char *level, char *text, u8 *addr, unsigned int length) { metadata_access_enable(); - print_hex_dump(level, text, DUMP_PREFIX_ADDRESS, 16, 1, addr, - length, 1); + print_hex_dump(level, kasan_reset_tag(text), DUMP_PREFIX_ADDRESS, + 16, 1, addr, length, 1); metadata_access_disable(); } @@ -570,7 +572,7 @@ static struct track *get_track(struct kmem_cache *s, void *object, p = object + get_info_end(s); - return p + alloc; + return kasan_reset_tag(p + alloc); } static void set_track(struct kmem_cache *s, void *object, @@ -583,7 +585,8 @@ static void set_track(struct kmem_cache *s, void *object, unsigned int nr_entries; metadata_access_enable(); - nr_entries = stack_trace_save(p->addrs, TRACK_ADDRS_COUNT, 3); + nr_entries = stack_trace_save(kasan_reset_tag(p->addrs), + TRACK_ADDRS_COUNT, 3); metadata_access_disable(); if (nr_entries < TRACK_ADDRS_COUNT) @@ -747,7 +750,7 @@ static __printf(3, 4) void slab_err(struct kmem_cache *s, struct page *page, static void init_object(struct kmem_cache *s, void *object, u8 val) { - u8 *p = object; + u8 *p = kasan_reset_tag(object); if (s->flags & SLAB_RED_ZONE) memset(p - s->red_left_pad, val, s->red_left_pad); @@ -777,7 +780,7 @@ static int check_bytes_and_report(struct kmem_cache *s, struct page *page, u8 *addr = page_address(page); metadata_access_enable(); - fault = memchr_inv(start, value, bytes); + fault = memchr_inv(kasan_reset_tag(start), value, bytes); metadata_access_disable(); if (!fault) return 1; @@ -873,7 +876,7 @@ static int slab_pad_check(struct kmem_cache *s, struct page *page) pad = end - remainder; metadata_access_enable(); - fault = memchr_inv(pad, POISON_INUSE, remainder); + fault = memchr_inv(kasan_reset_tag(pad), POISON_INUSE, remainder); metadata_access_disable(); if (!fault) return 1; @@ -1118,7 +1121,7 @@ void setup_page_debug(struct kmem_cache *s, struct page *page, void *addr) return; metadata_access_enable(); - memset(addr, POISON_INUSE, page_size(page)); + memset(kasan_reset_tag(addr), POISON_INUSE, page_size(page)); metadata_access_disable(); } @@ -1566,10 +1569,10 @@ static inline bool slab_free_freelist_hook(struct kmem_cache *s, * Clear the object and the metadata, but don't touch * the redzone. */ - memset(object, 0, s->object_size); + memset(kasan_reset_tag(object), 0, s->object_size); rsize = (s->flags & SLAB_RED_ZONE) ? s->red_left_pad : 0; - memset((char *)object + s->inuse, 0, + memset((char *)kasan_reset_tag(object) + s->inuse, 0, s->size - s->inuse - rsize); } @@ -2883,10 +2886,10 @@ static __always_inline void *slab_alloc_node(struct kmem_cache *s, stat(s, ALLOC_FASTPATH); } - maybe_wipe_obj_freeptr(s, object); + maybe_wipe_obj_freeptr(s, kasan_reset_tag(object)); if (unlikely(slab_want_init_on_alloc(gfpflags, s)) && object) - memset(object, 0, s->object_size); + memset(kasan_reset_tag(object), 0, s->object_size); slab_post_alloc_hook(s, objcg, gfpflags, 1, &object); -- 2.29.2.222.g5d2a92d10f8-goog
WARNING: multiple messages have this Message-ID (diff)
From: Andrey Konovalov <andreyknvl@google.com> To: Catalin Marinas <catalin.marinas@arm.com> Cc: linux-arm-kernel@lists.infradead.org, Marco Elver <elver@google.com>, Andrey Konovalov <andreyknvl@google.com>, Kevin Brodsky <kevin.brodsky@arm.com>, Will Deacon <will.deacon@arm.com>, Branislav Rankov <Branislav.Rankov@arm.com>, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Alexander Potapenko <glider@google.com>, Evgenii Stepanov <eugenis@google.com>, Andrey Ryabinin <aryabinin@virtuozzo.com>, Andrew Morton <akpm@linux-foundation.org>, Vincenzo Frascino <vincenzo.frascino@arm.com>, Dmitry Vyukov <dvyukov@google.com> Subject: [PATCH v9 41/44] kasan, mm: reset tags when accessing metadata Date: Tue, 10 Nov 2020 23:10:38 +0100 [thread overview] Message-ID: <d0060171a76ace31b26fef1f2713da209099fb99.1605046192.git.andreyknvl@google.com> (raw) In-Reply-To: <cover.1605046192.git.andreyknvl@google.com> Kernel allocator code accesses metadata for slab objects, that may lie out-of-bounds of the object itself, or be accessed when an object is freed. Such accesses trigger tag faults and lead to false-positive reports with hardware tag-based KASAN. Software KASAN modes disable instrumentation for allocator code via KASAN_SANITIZE Makefile macro, and rely on kasan_enable/disable_current() annotations which are used to ignore KASAN reports. With hardware tag-based KASAN neither of those options are available, as it doesn't use compiler instrumetation, no tag faults are ignored, and MTE is disabled after the first one. Instead, reset tags when accessing metadata (currently only for SLUB). Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Acked-by: Marco Elver <elver@google.com> --- Change-Id: I39f3c4d4f29299d4fbbda039bedf230db1c746fb --- mm/page_alloc.c | 4 +++- mm/page_poison.c | 2 +- mm/slub.c | 29 ++++++++++++++++------------- 3 files changed, 20 insertions(+), 15 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 24b45261e2bd..f1648aee8d88 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1195,8 +1195,10 @@ static void kernel_init_free_pages(struct page *page, int numpages) /* s390's use of memset() could override KASAN redzones. */ kasan_disable_current(); - for (i = 0; i < numpages; i++) + for (i = 0; i < numpages; i++) { + page_kasan_tag_reset(page + i); clear_highpage(page + i); + } kasan_enable_current(); } diff --git a/mm/page_poison.c b/mm/page_poison.c index ae0482cded87..e6c994af7518 100644 --- a/mm/page_poison.c +++ b/mm/page_poison.c @@ -53,7 +53,7 @@ static void poison_page(struct page *page) /* KASAN still think the page is in-use, so skip it. */ kasan_disable_current(); - memset(addr, PAGE_POISON, PAGE_SIZE); + memset(kasan_reset_tag(addr), PAGE_POISON, PAGE_SIZE); kasan_enable_current(); kunmap_atomic(addr); } diff --git a/mm/slub.c b/mm/slub.c index b30be2385d1c..df2fd5b57df1 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -249,7 +249,7 @@ static inline void *freelist_ptr(const struct kmem_cache *s, void *ptr, { #ifdef CONFIG_SLAB_FREELIST_HARDENED /* - * When CONFIG_KASAN_SW_TAGS is enabled, ptr_addr might be tagged. + * When CONFIG_KASAN_SW/HW_TAGS is enabled, ptr_addr might be tagged. * Normally, this doesn't cause any issues, as both set_freepointer() * and get_freepointer() are called with a pointer with the same tag. * However, there are some issues with CONFIG_SLUB_DEBUG code. For @@ -275,6 +275,7 @@ static inline void *freelist_dereference(const struct kmem_cache *s, static inline void *get_freepointer(struct kmem_cache *s, void *object) { + object = kasan_reset_tag(object); return freelist_dereference(s, object + s->offset); } @@ -304,6 +305,7 @@ static inline void set_freepointer(struct kmem_cache *s, void *object, void *fp) BUG_ON(object == fp); /* naive detection of double free or corruption */ #endif + freeptr_addr = (unsigned long)kasan_reset_tag((void *)freeptr_addr); *(void **)freeptr_addr = freelist_ptr(s, fp, freeptr_addr); } @@ -538,8 +540,8 @@ static void print_section(char *level, char *text, u8 *addr, unsigned int length) { metadata_access_enable(); - print_hex_dump(level, text, DUMP_PREFIX_ADDRESS, 16, 1, addr, - length, 1); + print_hex_dump(level, kasan_reset_tag(text), DUMP_PREFIX_ADDRESS, + 16, 1, addr, length, 1); metadata_access_disable(); } @@ -570,7 +572,7 @@ static struct track *get_track(struct kmem_cache *s, void *object, p = object + get_info_end(s); - return p + alloc; + return kasan_reset_tag(p + alloc); } static void set_track(struct kmem_cache *s, void *object, @@ -583,7 +585,8 @@ static void set_track(struct kmem_cache *s, void *object, unsigned int nr_entries; metadata_access_enable(); - nr_entries = stack_trace_save(p->addrs, TRACK_ADDRS_COUNT, 3); + nr_entries = stack_trace_save(kasan_reset_tag(p->addrs), + TRACK_ADDRS_COUNT, 3); metadata_access_disable(); if (nr_entries < TRACK_ADDRS_COUNT) @@ -747,7 +750,7 @@ static __printf(3, 4) void slab_err(struct kmem_cache *s, struct page *page, static void init_object(struct kmem_cache *s, void *object, u8 val) { - u8 *p = object; + u8 *p = kasan_reset_tag(object); if (s->flags & SLAB_RED_ZONE) memset(p - s->red_left_pad, val, s->red_left_pad); @@ -777,7 +780,7 @@ static int check_bytes_and_report(struct kmem_cache *s, struct page *page, u8 *addr = page_address(page); metadata_access_enable(); - fault = memchr_inv(start, value, bytes); + fault = memchr_inv(kasan_reset_tag(start), value, bytes); metadata_access_disable(); if (!fault) return 1; @@ -873,7 +876,7 @@ static int slab_pad_check(struct kmem_cache *s, struct page *page) pad = end - remainder; metadata_access_enable(); - fault = memchr_inv(pad, POISON_INUSE, remainder); + fault = memchr_inv(kasan_reset_tag(pad), POISON_INUSE, remainder); metadata_access_disable(); if (!fault) return 1; @@ -1118,7 +1121,7 @@ void setup_page_debug(struct kmem_cache *s, struct page *page, void *addr) return; metadata_access_enable(); - memset(addr, POISON_INUSE, page_size(page)); + memset(kasan_reset_tag(addr), POISON_INUSE, page_size(page)); metadata_access_disable(); } @@ -1566,10 +1569,10 @@ static inline bool slab_free_freelist_hook(struct kmem_cache *s, * Clear the object and the metadata, but don't touch * the redzone. */ - memset(object, 0, s->object_size); + memset(kasan_reset_tag(object), 0, s->object_size); rsize = (s->flags & SLAB_RED_ZONE) ? s->red_left_pad : 0; - memset((char *)object + s->inuse, 0, + memset((char *)kasan_reset_tag(object) + s->inuse, 0, s->size - s->inuse - rsize); } @@ -2883,10 +2886,10 @@ static __always_inline void *slab_alloc_node(struct kmem_cache *s, stat(s, ALLOC_FASTPATH); } - maybe_wipe_obj_freeptr(s, object); + maybe_wipe_obj_freeptr(s, kasan_reset_tag(object)); if (unlikely(slab_want_init_on_alloc(gfpflags, s)) && object) - memset(object, 0, s->object_size); + memset(kasan_reset_tag(object), 0, s->object_size); slab_post_alloc_hook(s, objcg, gfpflags, 1, &object); -- 2.29.2.222.g5d2a92d10f8-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-11-10 22:12 UTC|newest] Thread overview: 307+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-11-10 22:09 [PATCH v9 00/44] kasan: add hardware tag-based mode for arm64 Andrey Konovalov 2020-11-10 22:09 ` Andrey Konovalov 2020-11-10 22:09 ` Andrey Konovalov 2020-11-10 22:09 ` [PATCH v9 01/44] kasan: drop unnecessary GPL text from comment headers Andrey Konovalov 2020-11-10 22:09 ` Andrey Konovalov 2020-11-10 22:09 ` Andrey Konovalov 2020-11-11 13:16 ` Alexander Potapenko 2020-11-11 13:16 ` Alexander Potapenko 2020-11-11 13:16 ` Alexander Potapenko 2020-11-10 22:09 ` [PATCH v9 02/44] kasan: KASAN_VMALLOC depends on KASAN_GENERIC Andrey Konovalov 2020-11-10 22:09 ` Andrey Konovalov 2020-11-10 22:09 ` Andrey Konovalov 2020-11-11 13:19 ` Alexander Potapenko 2020-11-11 13:19 ` Alexander Potapenko 2020-11-11 13:19 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 03/44] kasan: group vmalloc code Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 13:21 ` Alexander Potapenko 2020-11-11 13:21 ` Alexander Potapenko 2020-11-11 13:21 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 04/44] s390/kasan: include asm/page.h from asm/kasan.h Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` [PATCH v9 05/44] kasan: shadow declarations only for software modes Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 13:25 ` Alexander Potapenko 2020-11-11 13:25 ` Alexander Potapenko 2020-11-11 13:25 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 06/44] kasan: rename (un)poison_shadow to (un)poison_memory Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 13:26 ` Alexander Potapenko 2020-11-11 13:26 ` Alexander Potapenko 2020-11-11 13:26 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 07/44] kasan: rename KASAN_SHADOW_* to KASAN_GRANULE_* Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 13:45 ` Alexander Potapenko 2020-11-11 13:45 ` Alexander Potapenko 2020-11-11 13:45 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 08/44] kasan: only build init.c for software modes Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 13:46 ` Alexander Potapenko 2020-11-11 13:46 ` Alexander Potapenko 2020-11-11 13:46 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 09/44] kasan: split out shadow.c from common.c Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 14:07 ` Alexander Potapenko 2020-11-11 14:07 ` Alexander Potapenko 2020-11-11 14:07 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 10/44] kasan: define KASAN_GRANULE_PAGE Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 14:13 ` Alexander Potapenko 2020-11-11 14:13 ` Alexander Potapenko 2020-11-11 14:13 ` Alexander Potapenko 2020-11-11 18:47 ` Andrey Konovalov 2020-11-11 18:47 ` Andrey Konovalov 2020-11-11 18:47 ` Andrey Konovalov 2020-11-11 19:04 ` Marco Elver 2020-11-11 19:04 ` Marco Elver 2020-11-11 19:04 ` Marco Elver 2020-11-12 0:05 ` Andrey Konovalov 2020-11-12 0:05 ` Andrey Konovalov 2020-11-12 0:05 ` Andrey Konovalov 2020-11-10 22:10 ` [PATCH v9 11/44] kasan: rename report and tags files Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 14:15 ` Alexander Potapenko 2020-11-11 14:15 ` Alexander Potapenko 2020-11-11 14:15 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 12/44] kasan: don't duplicate config dependencies Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 14:20 ` Alexander Potapenko 2020-11-11 14:20 ` Alexander Potapenko 2020-11-11 14:20 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 13/44] kasan: hide invalid free check implementation Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 14:23 ` Alexander Potapenko 2020-11-11 14:23 ` Alexander Potapenko 2020-11-11 14:23 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 14/44] kasan: decode stack frame only with KASAN_STACK_ENABLE Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 14:25 ` Alexander Potapenko 2020-11-11 14:25 ` Alexander Potapenko 2020-11-11 14:25 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 15/44] kasan, arm64: only init shadow for software modes Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 14:30 ` Alexander Potapenko 2020-11-11 14:30 ` Alexander Potapenko 2020-11-11 14:30 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 16/44] kasan, arm64: only use kasan_depth " Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 14:59 ` Alexander Potapenko 2020-11-11 14:59 ` Alexander Potapenko 2020-11-11 14:59 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 17/44] kasan, arm64: move initialization message Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 15:03 ` Alexander Potapenko 2020-11-11 15:03 ` Alexander Potapenko 2020-11-11 15:03 ` Alexander Potapenko 2020-11-11 18:50 ` Andrey Konovalov 2020-11-11 18:50 ` Andrey Konovalov 2020-11-11 18:50 ` Andrey Konovalov 2020-11-12 15:09 ` Alexander Potapenko 2020-11-12 15:09 ` Alexander Potapenko 2020-11-12 15:09 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 18/44] kasan, arm64: rename kasan_init_tags and mark as __init Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 15:05 ` Alexander Potapenko 2020-11-11 15:05 ` Alexander Potapenko 2020-11-11 15:05 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 19/44] kasan: rename addr_has_shadow to addr_has_metadata Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 15:06 ` Alexander Potapenko 2020-11-11 15:06 ` Alexander Potapenko 2020-11-11 15:06 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 20/44] kasan: rename print_shadow_for_address to print_memory_metadata Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 15:07 ` Alexander Potapenko 2020-11-11 15:07 ` Alexander Potapenko 2020-11-11 15:07 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 21/44] kasan: kasan_non_canonical_hook only for software modes Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 15:08 ` Alexander Potapenko 2020-11-11 15:08 ` Alexander Potapenko 2020-11-11 15:08 ` Alexander Potapenko 2020-11-11 18:52 ` Andrey Konovalov 2020-11-11 18:52 ` Andrey Konovalov 2020-11-11 18:52 ` Andrey Konovalov 2020-11-12 15:16 ` Alexander Potapenko 2020-11-12 15:16 ` Alexander Potapenko 2020-11-12 15:16 ` Alexander Potapenko 2020-11-12 19:27 ` Andrey Konovalov 2020-11-12 19:27 ` Andrey Konovalov 2020-11-12 19:27 ` Andrey Konovalov 2020-11-10 22:10 ` [PATCH v9 22/44] kasan: rename SHADOW layout macros to META Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 15:18 ` Alexander Potapenko 2020-11-11 15:18 ` Alexander Potapenko 2020-11-11 15:18 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 23/44] kasan: separate metadata_fetch_row for each mode Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 15:22 ` Alexander Potapenko 2020-11-11 15:22 ` Alexander Potapenko 2020-11-11 15:22 ` Alexander Potapenko 2020-11-11 16:19 ` Alexander Potapenko 2020-11-11 16:19 ` Alexander Potapenko 2020-11-11 16:19 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 24/44] kasan, arm64: don't allow SW_TAGS with ARM64_MTE Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 15:52 ` Alexander Potapenko 2020-11-11 15:52 ` Alexander Potapenko 2020-11-11 15:52 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 25/44] kasan: introduce CONFIG_KASAN_HW_TAGS Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 15:58 ` Alexander Potapenko 2020-11-11 15:58 ` Alexander Potapenko 2020-11-11 15:58 ` Alexander Potapenko 2020-11-11 18:53 ` Andrey Konovalov 2020-11-11 18:53 ` Andrey Konovalov 2020-11-11 18:53 ` Andrey Konovalov 2020-11-10 22:10 ` [PATCH v9 26/44] arm64: Enable armv8.5-a asm-arch option Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` [PATCH v9 27/44] arm64: mte: Add in-kernel MTE helpers Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` [PATCH v9 28/44] arm64: mte: Reset the page tag in page->flags Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-12 9:31 ` Catalin Marinas 2020-11-12 9:31 ` Catalin Marinas 2020-11-12 9:39 ` Vincenzo Frascino 2020-11-12 9:39 ` Vincenzo Frascino 2020-11-10 22:10 ` [PATCH v9 29/44] arm64: mte: Add in-kernel tag fault handler Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` [PATCH v9 30/44] arm64: kasan: Allow enabling in-kernel MTE Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-12 9:43 ` Catalin Marinas 2020-11-12 9:43 ` Catalin Marinas 2020-11-12 16:46 ` Vincenzo Frascino 2020-11-12 16:46 ` Vincenzo Frascino 2020-11-13 11:17 ` Vincenzo Frascino 2020-11-13 11:17 ` Vincenzo Frascino 2020-11-13 12:00 ` Catalin Marinas 2020-11-13 12:00 ` Catalin Marinas 2020-11-13 12:04 ` Vincenzo Frascino 2020-11-13 12:04 ` Vincenzo Frascino 2020-11-10 22:10 ` [PATCH v9 31/44] arm64: mte: Convert gcr_user into an exclude mask Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` [PATCH v9 32/44] arm64: mte: Switch GCR_EL1 in kernel entry and exit Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-12 9:39 ` Catalin Marinas 2020-11-12 9:39 ` Catalin Marinas 2020-11-12 9:45 ` Vincenzo Frascino 2020-11-12 9:45 ` Vincenzo Frascino 2020-11-12 9:45 ` Catalin Marinas 2020-11-12 9:45 ` Catalin Marinas 2020-11-12 9:55 ` Vincenzo Frascino 2020-11-12 9:55 ` Vincenzo Frascino 2020-11-10 22:10 ` [PATCH v9 33/44] kasan, mm: untag page address in free_reserved_area Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` [PATCH v9 34/44] arm64: kasan: Align allocations for HW_TAGS Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 16:10 ` Alexander Potapenko 2020-11-11 16:10 ` Alexander Potapenko 2020-11-11 16:10 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 35/44] arm64: kasan: Add arch layer for memory tagging helpers Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` [PATCH v9 36/44] kasan: define KASAN_GRANULE_SIZE for HW_TAGS Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 16:13 ` Alexander Potapenko 2020-11-11 16:13 ` Alexander Potapenko 2020-11-11 16:13 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 37/44] kasan, x86, s390: update undef CONFIG_KASAN Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 16:15 ` Alexander Potapenko 2020-11-11 16:15 ` Alexander Potapenko 2020-11-11 16:15 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 38/44] kasan, arm64: expand CONFIG_KASAN checks Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 16:22 ` Alexander Potapenko 2020-11-11 16:22 ` Alexander Potapenko 2020-11-11 16:22 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 39/44] kasan, arm64: implement HW_TAGS runtime Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-12 17:37 ` Alexander Potapenko 2020-11-12 17:37 ` Alexander Potapenko 2020-11-12 17:37 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 40/44] kasan, arm64: print report from tag fault handler Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 16:43 ` Alexander Potapenko 2020-11-11 16:43 ` Alexander Potapenko 2020-11-11 16:43 ` Alexander Potapenko 2020-11-10 22:10 ` Andrey Konovalov [this message] 2020-11-10 22:10 ` [PATCH v9 41/44] kasan, mm: reset tags when accessing metadata Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-12 16:10 ` Alexander Potapenko 2020-11-12 16:10 ` Alexander Potapenko 2020-11-12 16:10 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 42/44] kasan, arm64: enable CONFIG_KASAN_HW_TAGS Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 16:49 ` Alexander Potapenko 2020-11-11 16:49 ` Alexander Potapenko 2020-11-11 16:49 ` Alexander Potapenko 2020-11-10 22:10 ` [PATCH v9 43/44] kasan: add documentation for hardware tag-based mode Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-11 16:57 ` Alexander Potapenko 2020-11-11 16:57 ` Alexander Potapenko 2020-11-11 16:57 ` Alexander Potapenko 2020-11-11 18:54 ` Andrey Konovalov 2020-11-11 18:54 ` Andrey Konovalov 2020-11-11 18:54 ` Andrey Konovalov 2020-11-10 22:10 ` [PATCH v9 44/44] kselftest/arm64: Check GCR_EL1 after context switch Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-10 22:10 ` Andrey Konovalov 2020-11-12 9:46 ` Catalin Marinas 2020-11-12 9:46 ` Catalin Marinas 2020-11-12 15:59 ` Alexander Potapenko 2020-11-12 15:59 ` Alexander Potapenko 2020-11-12 15:59 ` Alexander Potapenko 2020-11-12 16:09 ` Marco Elver 2020-11-12 16:09 ` Marco Elver 2020-11-12 16:09 ` Marco Elver 2020-11-12 16:41 ` Alexander Potapenko 2020-11-12 16:41 ` Alexander Potapenko 2020-11-12 16:41 ` Alexander Potapenko 2020-11-13 11:47 ` Vincenzo Frascino 2020-11-13 11:47 ` Vincenzo Frascino 2020-11-10 22:54 ` [PATCH v9 00/44] kasan: add hardware tag-based mode for arm64 Andrew Morton 2020-11-10 22:54 ` Andrew Morton 2020-11-11 14:35 ` Andrey Konovalov 2020-11-11 14:35 ` Andrey Konovalov 2020-11-11 14:35 ` Andrey Konovalov
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