From f1394a1d369b927534929c08f209c0237a89420d Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 28 May 2015 04:42:54 -0700 Subject: bridge: fix br_multicast_query_expired() bug MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit [ Upstream commit 71d9f6149cac8fc6646adfb2a6f3b0de6ddd23f6 ] br_multicast_query_expired() querier argument is a pointer to a struct bridge_mcast_querier : struct bridge_mcast_querier { struct br_ip addr; struct net_bridge_port __rcu *port; }; Intent of the code was to clear port field, not the pointer to querier. Fixes: 2cd4143192e8 ("bridge: memorize and export selected IGMP/MLD querier port") Signed-off-by: Eric Dumazet Acked-by: Thadeu Lima de Souza Cascardo Acked-by: Linus Lüssing Cc: Linus Lüssing Cc: Steinar H. Gunderson Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- net/bridge/br_multicast.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/bridge') diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index cd02185753ca..b0aee78dba41 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -1821,7 +1821,7 @@ static void br_multicast_query_expired(struct net_bridge *br, if (query->startup_sent < br->multicast_startup_query_count) query->startup_sent++; - RCU_INIT_POINTER(querier, NULL); + RCU_INIT_POINTER(querier->port, NULL); br_multicast_send_query(br, NULL, query); spin_unlock(&br->multicast_lock); } -- cgit v1.2.3