linux-kernel - Re: 2.6.22-rc6 spurious hangs

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Date:	Thu, 28 Jun 2007 19:35:01 +0200
From:	Thomas Sattler <tsattler@....de>
To:	Oleg Nesterov <oleg@...sign.ru>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: 2.6.22-rc6 spurious hangs

>>>> 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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