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mm, kasan: SLAB support

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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>
This commit is contained in:
Alexander Potapenko
2016-03-25 14:21:59 -07:00
committed by Linus Torvalds
parent e6e8379c87
commit 7ed2f9e663
12 changed files with 266 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/linux/slab_def.h
+14
View File
@@ -76,8 +76,22 @@ struct kmem_cache {
#ifdef CONFIG_MEMCG
struct memcg_cache_params memcg_params;
#endif
#ifdef CONFIG_KASAN
struct kasan_cache kasan_info;
#endif
struct kmem_cache_node *node[MAX_NUMNODES];
};
static inline void *nearest_obj(struct kmem_cache *cache, struct page *page,
void *x) {
void *object = x - (x - page->s_mem) % cache->size;
void *last_object = page->s_mem + (cache->num - 1) * cache->size;
if (unlikely(object > last_object))
return last_object;
else
return object;
}
#endif /* _LINUX_SLAB_DEF_H */