linux-kernel - Re: [regression] nf_iterate(), BUG: unable to handle kernel NULL pointer dereference

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Message-ID: <4888A113.3030807@trash.net>
Date:	Thu, 24 Jul 2008 17:34:43 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Ingo Molnar <mingo@...e.hu>
CC:	David Miller <davem@...emloft.net>, herbert@...dor.apana.org.au,
	w@....eu, davidn@...idnewall.com, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, stefanr@...6.in-berlin.de,
	rjw@...k.pl, ilpo.jarvinen@...sinki.fi,
	Dave Jones <davej@...hat.com>,
	Krzysztof Piotr Oledzki <ole@....pl>
Subject: Re: [regression] nf_iterate(), BUG: unable to handle kernel NULL
 pointer dereference

Ingo Molnar wrote:
> * Patrick McHardy <kaber@...sh.net> wrote:
> 
>>> |    netfilter: accounting rework: ct_extend + 64bit counters (v4)
>>> [...]
>>> |     Signed-off-by: Krzysztof Piotr Oledzki <ole@....pl>
>>> |     Signed-off-by: Patrick McHardy <kaber@...sh.net>
>>> |     Signed-off-by: David S. Miller <davem@...emloft.net>
>>>
>>> Which i double-checked by reverting that commit from -git as well and  
>>> that solved the crash. Find the tested reverter patch below.
>> Thats odd. I don't think anything is wrong with that patch itself, its 
>> more likely that its triggering a bug in ct_extend. You config has a 
>> few helper enabled (FTP, H.323, TFTP) and the crash is when trying to 
>> call the helper functions. Did you actually have traffic of one of 
>> these protocols?
> 
> no, that's not likely - it's a default distro bootup.

OK thanks. I'll look into it.
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