Commit 0937502a authored May 28, 2008 by Christoph Lameter Committed by Pekka Enberg Jul 15, 2008

slub: Add check for kfree() of non slab objects.



We can detect kfree()s on non slab objects by checking for PageCompound().
Works in the same way as for ksize. This helped me catch an invalid
kfree().

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>

parent 4d3702b6

mm/slub.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -2766,6 +2766,7 @@ void kfree(const void *x)

		page = virt_to_head_page(x);
		if (unlikely(!PageSlab(page))) {
		BUG_ON(!PageCompound(page));
		put_page(page);
		return;
		}