commit 3dcb615e6841eb945a49f605743a6923ed591400
author Roopa Prabhu <roopa@cumulusnetworks.com> Tue Aug 04 06:36:24 2015 -0700
committer David S. Miller <davem@davemloft.net> Thu Aug 06 22:03:58 2015 -0700
tree c12c22a5ce9e0d80d208c9a4dfbee79754ca24cb
parent 3c621818404bbb0bed1a8892d843b499182fa7e9

af_mpls: add null dev check in find_outdev

This patch adds null dev check for the 'cfg->rc_via_table ==
NEIGH_LINK_TABLE or dev_get_by_index() failed' case

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/mpls/af_mpls.c

diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c
index d93c030..0430698 100644
--- a/net/mpls/af_mpls.c
+++ b/net/mpls/af_mpls.c
@@ -411,6 +411,9 @@
 		dev = dev_get_by_index(net, cfg->rc_ifindex);
 	}
 
+	if (!dev)
+		return ERR_PTR(-ENODEV);
+
 	return dev;
 }