Message-ID: <4683F145.2060705@gmx.de>
Date: Thu, 28 Jun 2007 19:35:01 +0200
From: Thomas Sattler <tsattler@gmx.de>
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To: Oleg Nesterov <oleg@tv-sign.ru>
CC: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Alan Cox <alan@lxorguk.ukuu.org.uk>, Ingo Molnar <mingo@elte.hu>
Subject: Re: 2.6.22-rc6 spurious hangs
References: <4683BF16.40905@gmx.de> <20070628144741.GA437@tv-sign.ru> <4683CC89.80406@gmx.de> <20070628150826.GA487@tv-sign.ru>
In-Reply-To: <20070628150826.GA487@tv-sign.ru>
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>>>> As Ingo told me I run 'echo t > /proc/sysrq-trigger' this time. The
>>>> corresponding part of my syslogs is attached, as well as my kernel config.
>>> Could you try the patch below? It dumps some info when flush_workqueue()
>>> hangs.
>> I'm compiling a patched kernel right now. As I wrote in my former mail the
>> whole thing not easy to trigger. So it can take some time to get the info.
> 
> Forgot to say, if you manage to trigger the hang, please wait a couple of
> minutes to collect more info from flush_wait().

Seems today is my lucky day: I triggered it in just a few minutes.

The logfile is attached.

Thomas

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