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| author | Andrey Konovalov <andreyknvl@google.com> | 2017-05-03 14:56:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-03 15:52:12 -0700 |
| commit | 5ab6d91ac998158d04f9563335aa5f1409eda971 (patch) | |
| tree | da750838c43f7a82600d4b5636b3ea8f9c142ffb /mm/kasan/kasan.h | |
| parent | 430a05f91d6051705a6ddbe207735ca62e39bb80 (diff) | |
| download | linux-5ab6d91ac998158d04f9563335aa5f1409eda971.tar.gz linux-5ab6d91ac998158d04f9563335aa5f1409eda971.tar.bz2 linux-5ab6d91ac998158d04f9563335aa5f1409eda971.zip | |
kasan: improve double-free report format
Changes double-free report header from
BUG: Double free or freeing an invalid pointer
Unexpected shadow byte: 0xFB
to
BUG: KASAN: double-free or invalid-free in kmalloc_oob_left+0xe5/0xef
This makes a bug uniquely identifiable by the first report line. To
account for removing of the unexpected shadow value, print shadow bytes
at the end of the report as in reports for other kinds of bugs.
Link: http://lkml.kernel.org/r/20170302134851.101218-9-andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@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, 1 insertions, 1 deletions
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index dd2dea8eb077..1229298cce64 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -99,7 +99,7 @@ static inline const void *kasan_shadow_to_mem(const void *shadow_addr) 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); + void *ip); #if defined(CONFIG_SLAB) || defined(CONFIG_SLUB) void quarantine_put(struct kasan_free_meta *info, struct kmem_cache *cache); |