diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-05-07 11:29:25 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-05-07 11:29:25 +1000 |
| commit | 1ed31d6db90d51010545921e59d369d2f92b7ac2 (patch) | |
| tree | 358a0b346bc8135cd5e53700eb44308b1a7c8c5b /mm/slab.c | |
| parent | ceba1abcb00b0ef0b1efcd715285f6e05523edef (diff) | |
| parent | 722154e4cacf015161efe60009ae9be23d492296 (diff) | |
Merge commit 'origin/master' into next
Diffstat (limited to 'mm/slab.c')
| -rw-r--r-- | mm/slab.c | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/mm/slab.c b/mm/slab.c index a9f325b28bed..bac0f4fcc216 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -3602,21 +3602,10 @@ EXPORT_SYMBOL(kmem_cache_alloc_notrace); */ int kmem_ptr_validate(struct kmem_cache *cachep, const void *ptr) { - unsigned long addr = (unsigned long)ptr; - unsigned long min_addr = PAGE_OFFSET; - unsigned long align_mask = BYTES_PER_WORD - 1; unsigned long size = cachep->buffer_size; struct page *page; - if (unlikely(addr < min_addr)) - goto out; - if (unlikely(addr > (unsigned long)high_memory - size)) - goto out; - if (unlikely(addr & align_mask)) - goto out; - if (unlikely(!kern_addr_valid(addr))) - goto out; - if (unlikely(!kern_addr_valid(addr + size - 1))) + if (unlikely(!kern_ptr_validate(ptr, size))) goto out; page = virt_to_page(ptr); if (unlikely(!PageSlab(page))) |