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

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Message-ID: <20090620154716.GA12901@elte.hu>
Date:	Sat, 20 Jun 2009 17:47:16 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Patrick McHardy <kaber@...sh.net>
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()

* 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.)

( 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. )

Thanks,

	Ingo
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