netdev - Re: [PATCH] tproxy: nf_tproxy_assign

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Message-ID: <AANLkTikkcaionMp3SJLgo3JmCjxQ7rPZv3-3_RbxCx_4@mail.gmail.com>
Date:	Wed, 14 Jul 2010 00:27:56 -0300
From:	Felipe W Damasio <felipewd@...il.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Avi Kivity <avi@...hat.com>, David Miller <davem@...emloft.net>,
	Patrick McHardy <kaber@...sh.net>,
	linux-kernel@...r.kernel.org, netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] tproxy: nf_tproxy_assign_sock() can handle tw sockets

Hi Mr. Dumazet,

2010/7/14 Eric Dumazet <eric.dumazet@...il.com>:
> RDX being the sk pointer (and sk+0x38 contains the corrupted "sk_prot" value)
> , we notice RBP contains same "sk" value + 0x200000  (2 Mbytes).
>
> (same remark on your initial bug report)
>
> Could you enable CONFIG_FRAME_POINTER=y in your config ?

I can, but my bosses will kick my ass if I bring down the ISP again :)

If you think it's the only way to find the problem I'll tell them that
I need to do it. In this case, please tell me what other config
options/tools I can use to get as much info as possible...since I'll
probably be able to test this only once more on the production
environment for debugging purposes.

Cheers,

Felipe Damasio
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