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| author |   Alexander Potapenko <glider@google.com> | 2016-03-25 14:21:59 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-25 16:37:42 -0700 |
| commit | 7ed2f9e663854db313f177a511145630e398b402 (patch) | |
| tree | f9dfba81a688864a4d78689470f624b0a482f545 /include/linux/slub_def.h | |
| parent | kasan: modify kmalloc_large_oob_right(), add kmalloc_pagealloc_oob_right() (diff) | |
| download | linux-dev-7ed2f9e663854db313f177a511145630e398b402.tar.xz linux-dev-7ed2f9e663854db313f177a511145630e398b402.zip | |
mm, kasan: SLAB support
Add KASAN hooks to SLAB allocator.
This patch is based on the "mm: kasan: unified support for SLUB and SLAB
allocators" patch originally prepared by Dmitry Chernenkov.
Signed-off-by: Alexander Potapenko <glider@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Andrey Konovalov <adech.fo@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Konstantin Serebryany <kcc@google.com>
Cc: Dmitry Chernenkov <dmitryc@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/slub_def.h')
| -rw-r--r-- | include/linux/slub_def.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index ac5143f95ee6..665cd0cd18b8 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -130,4 +130,15 @@ static inline void *virt_to_obj(struct kmem_cache *s, void object_err(struct kmem_cache *s, struct page *page, u8 *object, char *reason); +static inline void *nearest_obj(struct kmem_cache *cache, struct page *page, + void *x) { + void *object = x - (x - page_address(page)) % cache->size; + void *last_object = page_address(page) + + (page->objects - 1) * cache->size; + if (unlikely(object > last_object)) + return last_object; + else + return object; +} + #endif /* _LINUX_SLUB_DEF_H */ |