From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net v2 1/4] ip_tunnel: Fix a memory corruption in
 ip_tunnel_xmit
Date: Tue, 01 Oct 2013 12:43:15 -0400 (EDT)
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Cc: pshelar@nicira.com, netdev@vger.kernel.org
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From: Steffen Klassert <steffen.klassert@secunet.com>
Date: Tue, 1 Oct 2013 11:33:59 +0200

> We might extend the used aera of a skb beyond the total
> headroom when we install the ipip header. Fix this by
> calling skb_cow_head() unconditionally.
> 
> Bug was introduced with commit c544193214
> ("GRE: Refactor GRE tunneling code.")
> 
> Cc: Pravin Shelar <pshelar@nicira.com>
> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

Applied and queued up for -stable.