ip_tunnel: clear IPCB in ip_tunnel_xmit() in case dst_link_failure() is called
commit a622260254ee48("ip_tunnel: fix kernel panic with icmp_dest_unreach") clear IPCB in ip_tunnel_xmit() , or else skb->cb[] may contain garbage from GSO segmentation layer. But commit 0e6fbc5b6c621("ip_tunnels: extend iptunnel_xmit()") refactor codes, and it clear IPCB behind the dst_link_failure(). So clear IPCB in ip_tunnel_xmit() just like commti a622260254ee48("ip_tunnel: fix kernel panic with icmp_dest_unreach"). Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -686,6 +686,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
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tunnel->err_time + IPTUNNEL_ERR_TIMEO)) {
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tunnel->err_time + IPTUNNEL_ERR_TIMEO)) {
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tunnel->err_count--;
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tunnel->err_count--;
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memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
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dst_link_failure(skb);
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dst_link_failure(skb);
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} else
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} else
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tunnel->err_count = 0;
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tunnel->err_count = 0;
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