From: Duan Jiong <duanj.fnst@cn.fujitsu.com>
Date: Thu, 23 Jan 2014 06:00:25 +0000 (+0800)
Subject: ip_tunnel: clear IPCB in ip_tunnel_xmit() in case dst_link_failure() is called
X-Git-Tag: v3.14-rc1~94^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=11c21a307d79ea5f6b6fc0d3dfdeda271e5e65f6;p=pandora-kernel.git

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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