netdev - Re: [PATCH net-2.6] ipv6: NULL pointer dereferrence in tcp_v6_send

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Date:	Wed, 01 Oct 2008 02:13:42 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	den@...nvz.org
Cc:	xemul@...nvz.org, vgusev@...nvz.org, netdev@...r.kernel.org
Subject: Re: [PATCH net-2.6] ipv6: NULL pointer dereferrence in
 tcp_v6_send_ack

From: "Denis V. Lunev" <den@...nvz.org>
Date: Wed,  1 Oct 2008 13:11:57 +0400

> The following actions are possible:
> tcp_v6_rcv
>   skb->dev = NULL;
>   tcp_v6_do_rcv
>     tcp_v6_hnd_req
>       tcp_check_req
>         req->rsk_ops->send_ack == tcp_v6_send_ack
> 
> So, skb->dev can be NULL in tcp_v6_send_ack. We must obtain namespace
> from dst entry.
> 
> Thanks to Vitaliy Gusev <vgusev@...nvz.org> for initial problem finding
> in IPv4 code.
> 
> Signed-off-by: Denis V. Lunev <den@...nvz.org>

Applied, thanks for resending this part for me.
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