linux-kernel - Re: System deadlock on 2.6.24-rt20

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Message-ID: <alpine.LFD.2.00.0904031226500.12916@localhost.localdomain>
Date:	Fri, 3 Apr 2009 12:27:30 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Remy Bohmer <linux@...mer.net>
cc:	Steven Rostedt <rostedt@...dmis.org>, Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-rt-users <linux-rt-users@...r.kernel.org>
Subject: Re: System deadlock on 2.6.24-rt20

On Fri, 3 Apr 2009, Remy Bohmer wrote:

> Hello All,
> 
> We encountered a nasty system lockup on an X86 system running
> 2.6.24.7-rt20. (Intel Core2Duo system)
> What happens is that the system freezes completely after some time.
> After a lot of testing we are now able to reproduce this problem
> within 5 minutes of testing.
> 
> The backtrace was not printed to the serial terminal, but when we
> accidentally used the VGA
> terminal the backtrace was there. So we used/hacked the earlyprintk
> mechanism to get the logging out.
> 
> Does anybody recognise these backtraces? And if so, is there a fix for
> it already?

http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.24.7-rt27.bz2

Thanks,

	tglx
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