X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=mm%2Fslab.c;h=bac0f4fcc216548fae98d352b0787cf509c0f262;hb=383bee6b54a1eeac3a286812be8a5c3f122fd834;hp=a9f325b28bed145a4aab6ff8414b074d3b233280;hpb=4e3eaddd142e2142c048c5052a0a9d2604fccfc6;p=pandora-kernel.git

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)))