linux-kernel - Re: [bug] __nf_ct_refresh_acct(): WARNING: at lib/list_debug.c:30 __list

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Date:	Sat, 20 Jun 2009 17:56:40 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Eric Dumazet <dada1@...mosbay.com>,
	David Miller <davem@...emloft.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Pablo Neira Ayuso <pablo@...filter.org>
Subject: Re: [bug] __nf_ct_refresh_acct(): WARNING: at lib/list_debug.c:30
 __list_add+0x7d/0xad()

Ingo Molnar wrote:
> * Patrick McHardy <kaber@...sh.net> wrote:
> 
>> Ingo, could you please try whether this patch (combined with the 
>> last one) makes any difference? Enabling CONFIG_NETFILTER_DEBUG 
>> could also help.
> 
> Mind pushing it upstream, and i'll keep things monitored over the 
> week following when it hits upstream?
> 
> The reason is, the crash ratio is worse than 1:1000, it took a day 
> and a 1000 tests to trigger that one. I havent seen it after that.
> 
> So it's going to be a very slow observation and you shouldnt 
> serialize on me - giving you a 'it works' positive result will take 
> 10,000 random bootp tests or so - that's a week or longer. (it can 
> take a long time to hit that especially in the merge window when 
> there's a lot of various test failures that cause hickups in the 
> test stream.)

OK thanks, I'll push it upstream soon.

> ( Mailing me an upstream sha1 when all fixes in this area have hit 
>   upstream would certainly be welcome - i can use that as a 'no 
>   crashes expected in that area from that point on' flag day. )

Sure, will do.

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