diff options
| author |   Andrey Ryabinin <aryabinin@virtuozzo.com> | 2016-08-02 14:02:55 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-02 17:31:41 -0400 |
| commit | 7e088978933ee186533355ae03a9dc1de99cf6c7 (patch) | |
| tree | 009af8de8842183482dc3619f429bceafd8e65bb /mm/kasan/kasan.h | |
| parent | mm/kasan: get rid of ->state in struct kasan_alloc_meta (diff) | |
| download | wireguard-linux-7e088978933ee186533355ae03a9dc1de99cf6c7.tar.xz wireguard-linux-7e088978933ee186533355ae03a9dc1de99cf6c7.zip | |
kasan: improve double-free reports
Currently we just dump stack in case of double free bug.
Let's dump all info about the object that we have.
[aryabinin@virtuozzo.com: change double free message per Alexander]
Link: http://lkml.kernel.org/r/1470153654-30160-1-git-send-email-aryabinin@virtuozzo.com
Link: http://lkml.kernel.org/r/1470062715-14077-6-git-send-email-aryabinin@virtuozzo.com
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/kasan/kasan.h')
| -rw-r--r-- | mm/kasan/kasan.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 9b7b31e25fd2..e5c2181fee6f 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -99,6 +99,8 @@ static inline bool kasan_report_enabled(void) void kasan_report(unsigned long addr, size_t size, bool is_write, unsigned long ip); +void kasan_report_double_free(struct kmem_cache *cache, void *object, + s8 shadow); #if defined(CONFIG_SLAB) || defined(CONFIG_SLUB) void quarantine_put(struct kasan_free_meta *info, struct kmem_cache *cache); |