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diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index d6448e3..aadb596 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -269,7 +269,7 @@ static void br_multicast_del_pg(struct net_bridge *br,
del_timer(&p->timer);
call_rcu_bh(&p->rcu, br_multicast_free_pg);
- if (!mp->ports && !mp->mglist &&
+ if (!mp->ports && !mp->mglist && mp->timer_armed &&
netif_running(br->dev))
mod_timer(&mp->timer, jiffies);
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