From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH] net: ipv4: Don't crash if passing a null sk to
 ip_rt_update_pmtu.
Date: Wed, 30 Nov 2016 14:54:19 -0500 (EST)
Message-ID: <20161130.145419.801141163874925780.davem@davemloft.net>
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Cc: netdev@vger.kernel.org, erezsh@dev.mellanox.co.il
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From: Lorenzo Colitti <lorenzo@google.com>
Date: Wed, 30 Nov 2016 02:56:47 +0900

> Commit e2d118a1cb5e ("net: inet: Support UID-based routing in IP
> protocols.") made __build_flow_key call sock_net(sk) to determine
> the network namespace of the passed-in socket. This crashes if sk
> is NULL.
> 
> Fix this by getting the network namespace from the skb instead.
> 
> Reported-by: Erez Shitrit <erezsh@dev.mellanox.co.il>
> Signed-off-by: Lorenzo Colitti <lorenzo@google.com>

Applied, thanks.