netdev - Re: [PATCH] net: ipv4: Don't crash if passing a null sk to ip_rt_update

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Message-Id: <20161130.145419.801141163874925780.davem@davemloft.net>
Date:   Wed, 30 Nov 2016 14:54:19 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     lorenzo@...gle.com
Cc:     netdev@...r.kernel.org, erezsh@....mellanox.co.il
Subject: Re: [PATCH] net: ipv4: Don't crash if passing a null sk to
 ip_rt_update_pmtu.

From: Lorenzo Colitti <lorenzo@...gle.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@....mellanox.co.il>
> Signed-off-by: Lorenzo Colitti <lorenzo@...gle.com>

Applied, thanks.