From: Eric Dumazet <edumazet@xxxxxxxxxx>
[ 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 <edumazet@xxxxxxxxxx>
Acked-by: Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxx>
Acked-by: Linus Lüssing <linus.luessing@xxxxxxxxx>
Cc: Linus Lüssing <linus.luessing@xxxxxx>
Cc: Steinar H. Gunderson <sesse@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
---
net/bridge/br_multicast.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index cd02185..b0aee78 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);
}
--
2.1.0
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