From 1b112871186e3ab8333851c0caf203b47d7561b9 Mon Sep 17 00:00:00 2001
From: Hannes Frederic Sowa <hannes@stressinduktion.org>
Date: Wed, 8 Apr 2015 17:01:23 +0200
Subject: ipv6: call iptunnel_xmit with NULL sock pointer if no tunnel sock is
 available

Fixes: 79b16aadea32cce ("udp_tunnel: Pass UDP socket down through udp_tunnel{, 6}_xmit_skb().")
Reported-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 6cf2026..ac35a28 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -983,7 +983,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
 
 	skb_set_inner_ipproto(skb, IPPROTO_IPV6);
 
-	err = iptunnel_xmit(skb->sk, rt, skb, fl4.saddr, fl4.daddr,
+	err = iptunnel_xmit(NULL, rt, skb, fl4.saddr, fl4.daddr,
 			    protocol, tos, ttl, df,
 			    !net_eq(tunnel->net, dev_net(dev)));
 	iptunnel_xmit_stats(err, &dev->stats, dev->tstats);
-- 
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