diff --exclude CVS --exclude .git -uNr linux-3.12.10/net/bridge/br_input.c linux-3.12.10.modified/net/bridge/br_input.c
--- linux-3.12.10/net/bridge/br_input.c	2014-03-31 03:41:44.000000000 +0200
+++ linux-3.12.10.modified/net/bridge/br_input.c	2019-02-15 10:51:23.376424560 +0100
@@ -174,6 +174,8 @@
 		return RX_HANDLER_CONSUMED;
 
 	p = br_port_get_rcu(skb->dev);
+	if (!p)
+		return RX_HANDLER_PASS;
 
 	if (unlikely(is_link_local_ether_addr(dest))) {
 		/*