From: Andrey Konovalov <andreyknvl@google.com> To: Andrew Morton <akpm@linux-foundation.org> Cc: Catalin Marinas <catalin.marinas@arm.com>, 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>, 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 mm v10 39/42] kasan, mm: reset tags when accessing metadata Date: Fri, 13 Nov 2020 23:16:07 +0100 [thread overview] Message-ID: <623f0aa1265c65f4477f09f7b830fd3cd91a23a9.1605305705.git.andreyknvl@google.com> (raw) In-Reply-To: <cover.1605305705.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> Reviewed-by: Alexander Potapenko <glider@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 4a69fef13ac7..63d8d8b72c10 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 ccdbb62e025d..4148235ba554 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -250,7 +250,7 @@ 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 @@ -276,6 +276,7 @@ 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); } @@ -305,6 +306,7 @@ 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); } @@ -539,8 +541,8 @@ 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(); } @@ -571,7 +573,7 @@ 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, @@ -584,7 +586,8 @@ 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) @@ -748,7 +751,7 @@ 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); @@ -778,7 +781,7 @@ 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; @@ -874,7 +877,7 @@ 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; @@ -1119,7 +1122,7 @@ 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(); } @@ -1572,10 +1575,10 @@ 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); } @@ -2891,10 +2894,10 @@ 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); out: slab_post_alloc_hook(s, objcg, gfpflags, 1, &object); -- 2.29.2.299.gdc1121823c-goog
WARNING: multiple messages have this Message-ID (diff)
From: Andrey Konovalov <andreyknvl@google.com> To: Andrew Morton <akpm@linux-foundation.org> Cc: linux-arm-kernel@lists.infradead.org, Marco Elver <elver@google.com>, Catalin Marinas <catalin.marinas@arm.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 Konovalov <andreyknvl@google.com>, Andrey Ryabinin <aryabinin@virtuozzo.com>, Vincenzo Frascino <vincenzo.frascino@arm.com>, Dmitry Vyukov <dvyukov@google.com> Subject: [PATCH mm v10 39/42] kasan, mm: reset tags when accessing metadata Date: Fri, 13 Nov 2020 23:16:07 +0100 [thread overview] Message-ID: <623f0aa1265c65f4477f09f7b830fd3cd91a23a9.1605305705.git.andreyknvl@google.com> (raw) In-Reply-To: <cover.1605305705.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> Reviewed-by: Alexander Potapenko <glider@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 4a69fef13ac7..63d8d8b72c10 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 ccdbb62e025d..4148235ba554 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -250,7 +250,7 @@ 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 @@ -276,6 +276,7 @@ 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); } @@ -305,6 +306,7 @@ 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); } @@ -539,8 +541,8 @@ 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(); } @@ -571,7 +573,7 @@ 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, @@ -584,7 +586,8 @@ 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) @@ -748,7 +751,7 @@ 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); @@ -778,7 +781,7 @@ 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; @@ -874,7 +877,7 @@ 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; @@ -1119,7 +1122,7 @@ 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(); } @@ -1572,10 +1575,10 @@ 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); } @@ -2891,10 +2894,10 @@ 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); out: slab_post_alloc_hook(s, objcg, gfpflags, 1, &object); -- 2.29.2.299.gdc1121823c-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:[~2020-11-13 22:18 UTC|newest] Thread overview: 155+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-11-13 22:15 [PATCH mm v10 00/42] kasan: add hardware tag-based mode for arm64 Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 01/42] kasan: drop unnecessary GPL text from comment headers Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 02/42] kasan: KASAN_VMALLOC depends on KASAN_GENERIC Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 03/42] kasan: group vmalloc code Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 04/42] kasan: shadow declarations only for software modes Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 05/42] kasan: rename (un)poison_shadow to (un)poison_range Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-18 15:30 ` Alexander Potapenko 2020-11-18 15:30 ` Alexander Potapenko 2020-11-18 15:30 ` Alexander Potapenko 2020-11-13 22:15 ` [PATCH mm v10 06/42] kasan: rename KASAN_SHADOW_* to KASAN_GRANULE_* Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 07/42] kasan: only build init.c for software modes Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 08/42] kasan: split out shadow.c from common.c Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 09/42] kasan: define KASAN_MEMORY_PER_SHADOW_PAGE Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-18 15:36 ` Alexander Potapenko 2020-11-18 15:36 ` Alexander Potapenko 2020-11-18 15:36 ` Alexander Potapenko 2020-11-13 22:15 ` [PATCH mm v10 10/42] kasan: rename report and tags files Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 11/42] kasan: don't duplicate config dependencies Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 12/42] kasan: hide invalid free check implementation Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 13/42] kasan: decode stack frame only with KASAN_STACK_ENABLE Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 14/42] kasan, arm64: only init shadow for software modes Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 15/42] kasan, arm64: only use kasan_depth " Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 16/42] kasan, arm64: move initialization message Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 17/42] kasan, arm64: rename kasan_init_tags and mark as __init Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 18/42] kasan: rename addr_has_shadow to addr_has_metadata Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 19/42] kasan: rename print_shadow_for_address to print_memory_metadata Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 20/42] kasan: rename SHADOW layout macros to META Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 21/42] kasan: separate metadata_fetch_row for each mode Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 22/42] kasan, arm64: don't allow SW_TAGS with ARM64_MTE Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 23/42] kasan: introduce CONFIG_KASAN_HW_TAGS Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-18 16:04 ` Alexander Potapenko 2020-11-18 16:04 ` Alexander Potapenko 2020-11-18 16:04 ` Alexander Potapenko 2020-11-13 22:15 ` [PATCH mm v10 24/42] arm64: Enable armv8.5-a asm-arch option Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-18 15:48 ` Alexander Potapenko 2020-11-18 15:48 ` Alexander Potapenko 2020-11-18 15:48 ` Alexander Potapenko 2020-11-13 22:15 ` [PATCH mm v10 25/42] arm64: mte: Add in-kernel MTE helpers Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 26/42] arm64: mte: Reset the page tag in page->flags Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-14 12:43 ` Catalin Marinas 2020-11-14 12:43 ` Catalin Marinas 2020-11-13 22:15 ` [PATCH mm v10 27/42] arm64: mte: Add in-kernel tag fault handler Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 28/42] arm64: kasan: Allow enabling in-kernel MTE Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-14 12:47 ` Catalin Marinas 2020-11-14 12:47 ` Catalin Marinas 2020-11-13 22:15 ` [PATCH mm v10 29/42] arm64: mte: Convert gcr_user into an exclude mask Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 30/42] arm64: mte: Switch GCR_EL1 in kernel entry and exit Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` [PATCH mm v10 31/42] kasan, mm: untag page address in free_reserved_area Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-13 22:15 ` Andrey Konovalov 2020-11-18 16:07 ` Alexander Potapenko 2020-11-18 16:07 ` Alexander Potapenko 2020-11-18 16:07 ` Alexander Potapenko 2020-11-13 22:16 ` [PATCH mm v10 32/42] arm64: kasan: Align allocations for HW_TAGS Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` [PATCH mm v10 33/42] arm64: kasan: Add arch layer for memory tagging helpers Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` [PATCH mm v10 34/42] kasan: define KASAN_GRANULE_SIZE for HW_TAGS Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` [PATCH mm v10 35/42] kasan, x86, s390: update undef CONFIG_KASAN Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` [PATCH mm v10 36/42] kasan, arm64: expand CONFIG_KASAN checks Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` [PATCH mm v10 37/42] kasan, arm64: implement HW_TAGS runtime Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` [PATCH mm v10 38/42] kasan, arm64: print report from tag fault handler Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov [this message] 2020-11-13 22:16 ` [PATCH mm v10 39/42] kasan, mm: reset tags when accessing metadata Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` [PATCH mm v10 40/42] kasan, arm64: enable CONFIG_KASAN_HW_TAGS Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` [PATCH mm v10 41/42] kasan: add documentation for hardware tag-based mode Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-18 15:43 ` Alexander Potapenko 2020-11-18 15:43 ` Alexander Potapenko 2020-11-18 15:43 ` Alexander Potapenko 2020-11-13 22:16 ` [PATCH mm v10 42/42] kselftest/arm64: Check GCR_EL1 after context switch Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 22:16 ` Andrey Konovalov 2020-11-13 23:35 ` [PATCH mm v10 00/42] kasan: add hardware tag-based mode for arm64 Andrew Morton 2020-11-13 23:35 ` Andrew Morton 2020-11-16 14:48 ` Vincenzo Frascino 2020-11-16 14:48 ` Vincenzo Frascino
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