netdev - Re: [PATCH net] tcp: fix possible NULL dereference in tcp_vX_send

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Message-Id: <20141126.120951.631006073056672211.davem@davemloft.net>
Date:	Wed, 26 Nov 2014 12:09:51 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org, dborkman@...hat.com, jasa.bartelj@...il.com
Subject: Re: [PATCH net] tcp: fix possible NULL dereference in
 tcp_vX_send_reset()

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Tue, 25 Nov 2014 07:40:04 -0800

> From: Eric Dumazet <edumazet@...gle.com>
> 
> After commit ca777eff51f7 ("tcp: remove dst refcount false sharing for
> prequeue mode") we have to relax check against skb dst in
> tcp_v[46]_send_reset() if prequeue dropped the dst.
> 
> If a socket is provided, a full lookup was done to find this socket,
> so the dst test can be skipped.
> 
> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=88191
> Reported-by: Jaša Bartelj <jasa.bartelj@...il.com>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Reported-by: Daniel Borkmann <dborkman@...hat.com>
> Fixes: ca777eff51f7 ("tcp: remove dst refcount false sharing for prequeue mode")

Applied, thanks Eric.
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