Commit 43aa7ac7 authored by kirjanov@gmail.com's avatar kirjanov@gmail.com Committed by Linus Torvalds
Browse files

lib/btree: fix possible NULL pointer dereference 



mempool_alloc() can return null in atomic case.

Signed-off-by: default avatarDenis Kirjanov <kirjanov@gmail.com>
Cc: Joern Engel <joern@logfs.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent bdef2fe8

lib/btree.c

+2 −1
Original line number 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;



	node = mempool_alloc(head->mempool, gfp);

	if (likely(node))

		memset(node, 0, NODESIZE);

	return node;

}