bridge: fix smatch warning / potential null pointer dereference

[cascardo/linux.git] / net / bridge / br_multicast.c

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index cd3cf39..876e5fb 100644 (file)
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -1373,6 +1373,8 @@ static int br_ip6_multicast_query(struct net_bridge *br,
                br_multicast_query_received(br, port, &br->ip6_other_query,
                                            &saddr, max_delay);
                goto out;
+       } else if (!group) {
+               goto out;
        }
 
        mp = br_mdb_ip6_get(mlock_dereference(br->mdb, br), group, vid);