Commit 6e40e730 authored by Pekka Enberg's avatar Pekka Enberg Committed by Linus Torvalds

[PATCH] slab: remove broken PageSlab check from kfree_debugcheck

The PageSlab debug check in kfree_debugcheck() is broken for compound
pages.  It is also redundant as we already do BUG_ON for non-slab pages in
page_get_cache() and page_get_slab() which are always called before we free
any actual objects.
Signed-off-by: default avatarPekka Enberg <[email protected]>
Signed-off-by: default avatarAndrew Morton <[email protected]>
Signed-off-by: default avatarLinus Torvalds <[email protected]>
parent 66efc5a7
......@@ -2814,19 +2814,11 @@ static int cache_grow(struct kmem_cache *cachep,
static void kfree_debugcheck(const void *objp)
struct page *page;
if (!virt_addr_valid(objp)) {
printk(KERN_ERR "kfree_debugcheck: out of range ptr %lxh.\n",
(unsigned long)objp);
page = virt_to_page(objp);
if (!PageSlab(page)) {
printk(KERN_ERR "kfree_debugcheck: bad ptr %lxh.\n",
(unsigned long)objp);
static inline void verify_redzone_free(struct kmem_cache *cache, void *obj)
Markdown is supported
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment