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| author | Pekka Enberg <penberg@cs.helsinki.fi> | 2010-04-07 19:23:40 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-04-09 10:09:50 -0700 |
| commit | fc1c183353a113c71675fecd0485e5aa0fe68d72 (patch) | |
| tree | 25fc50112c80402ab43bd86a3d6b6a99a0c3c128 /include/linux | |
| parent | 4dc86ae1f925b2121d4e75058675895f83e54c71 (diff) | |
| download | linux-fc1c183353a113c71675fecd0485e5aa0fe68d72.tar.gz linux-fc1c183353a113c71675fecd0485e5aa0fe68d72.tar.bz2 linux-fc1c183353a113c71675fecd0485e5aa0fe68d72.zip | |
slab: Generify kernel pointer validation
As suggested by Linus, introduce a kern_ptr_validate() helper that does some
sanity checks to make sure a pointer is a valid kernel pointer. This is a
preparational step for fixing SLUB kmem_ptr_validate().
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Nick Piggin <npiggin@suse.de>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/slab.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/slab.h b/include/linux/slab.h index 488446289cab..49d1247cd6d9 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -106,6 +106,7 @@ int kmem_cache_shrink(struct kmem_cache *); void kmem_cache_free(struct kmem_cache *, void *); unsigned int kmem_cache_size(struct kmem_cache *); const char *kmem_cache_name(struct kmem_cache *); +int kern_ptr_validate(const void *ptr, unsigned long size); int kmem_ptr_validate(struct kmem_cache *cachep, const void *ptr); /* |