diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 410415ec918e8914bc316e4fb34bf9fc3040ac65..52387f7f12edc62e1ab65373c75c9853dc3bc661 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -1469,6 +1469,14 @@ static int vxlan_rcv(struct sock *sk, struct sk_buff *skb) goto drop; } + rcu_read_lock(); + + if (unlikely(!(vxlan->dev->flags & IFF_UP))) { + rcu_read_unlock(); + atomic_long_inc(&vxlan->dev->rx_dropped); + goto drop; + } + stats = this_cpu_ptr(vxlan->dev->tstats); u64_stats_update_begin(&stats->syncp); stats->rx_packets++; @@ -1476,6 +1484,9 @@ static int vxlan_rcv(struct sock *sk, struct sk_buff *skb) u64_stats_update_end(&stats->syncp); gro_cells_receive(&vxlan->gro_cells, skb); + + rcu_read_unlock(); + return 0; drop: