commit c95567c8035281d20ca8266cb39f8d48307a70af
author Kim Lilliestierna XX <kim.xx.lilliestierna@stericsson.com> Mon Jun 25 07:49:34 2012 +0000
committer David S. Miller <davem@davemloft.net> Mon Jun 25 16:44:11 2012 -0700
tree 4dd0747fbad925550d5507cb5a4d4176ce397638
parent be4852c957b7c1e8eeac8d13c3ef228508c0873a

caif: added check for potential null return

Add check on NULL return from caif_get().

Signed-off-by: Kim Lilliestierna <Kim.xx.Lilliestierna@stericsson.com>
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericssion.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/caif/caif_dev.c

diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
index e601da7..551d2fd 100644
--- a/net/caif/caif_dev.c
+++ b/net/caif/caif_dev.c
@@ -128,6 +128,11 @@
 
 	rcu_read_lock();
 	caifd = caif_get(skb->dev);
+
+	WARN_ON(caifd == NULL);
+	if (caifd == NULL)
+		return;
+
 	caifd_hold(caifd);
 	rcu_read_unlock();