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 <[email protected]> Signed-off-by: Roopa Prabhu <[email protected]> Signed-off-by: David S. Miller <[email protected]>
ambv · Aug 7, 2015 · 3dcb615 · 3dcb615
1 parent 3c62181
commit 3dcb615
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c
@@ -411,6 +411,9 @@ static struct net_device *find_outdev(struct net *net,
 		dev = dev_get_by_index(net, cfg->rc_ifindex);
 	}
 
+	if (!dev)
+		return ERR_PTR(-ENODEV);
+
 	return dev;
 }