From bb63f1f8a08cf8028564ad04831ebd7a8ffb9cba Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Mon, 30 Apr 2012 00:22:56 +0000 Subject: [PATCH] bridge: Fix fatal typo in setup of multicast_querier_expired Unfortunately it seems that I didn't properly test the case of an expired external querier in the recent multicast bridge series. The setup of the timer in that case is completely broken and leads to a NULL-pointer dereference. This patch fixes it. Signed-off-by: Herbert Xu Acked-by: Stephen Hemminger Signed-off-by: David S. Miller --- net/bridge/br_multicast.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 708e84f31888..5ca4c50ea233 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -744,8 +744,7 @@ static void br_multicast_local_router_expired(unsigned long data) static void br_multicast_querier_expired(unsigned long data) { - struct net_bridge_port *port = (void *)data; - struct net_bridge *br = port->br; + struct net_bridge *br = (void *)data; spin_lock(&br->multicast_lock); if (!netif_running(br->dev) || br->multicast_disabled) @@ -1581,7 +1580,7 @@ void br_multicast_init(struct net_bridge *br) setup_timer(&br->multicast_router_timer, br_multicast_local_router_expired, 0); setup_timer(&br->multicast_querier_timer, - br_multicast_querier_expired, 0); + br_multicast_querier_expired, (unsigned long)br); setup_timer(&br->multicast_query_timer, br_multicast_query_expired, (unsigned long)br); }