Commit 43aa7ac7 authored May 15, 2010 by kirjanov@gmail.com Committed by Linus Torvalds May 15, 2010

lib/btree: fix possible NULL pointer dereference



mempool_alloc() can return null in atomic case.

Signed-off-by: Denis Kirjanov <kirjanov@gmail.com>
Cc: Joern Engel <joern@logfs.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent bdef2fe8

lib/btree.c

+2 −1

Original line number	Original line	Diff line number	Diff line
	@@ -95,6 +95,7 @@ static unsigned long btree_node_alloc(struct btree_head head, gfp_t gfp)
	unsigned long *node;		unsigned long *node;

	node = mempool_alloc(head->mempool, gfp);		node = mempool_alloc(head->mempool, gfp);
			if (likely(node))
	memset(node, 0, NODESIZE);		memset(node, 0, NODESIZE);
	return node;		return node;
	}		}