Subject: Re: [BUG,2.6.29-rc7,s390] System goes into endless loop during
 boot or logon
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Frans Pop <elendil@planet.nl>
Cc: linux-s390@vger.kernel.org,
       Hendrik Brueckner <brueckner@linux.vnet.ibm.com>,
       Ingo Molnar <mingo@elte.hu>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
In-Reply-To: <200903090253.34173.elendil@planet.nl>
References: <200903080835.14032.elendil@planet.nl>
	 <200903080853.10704.elendil@planet.nl>
	 <200903090253.34173.elendil@planet.nl>
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Date: Mon, 09 Mar 2009 09:25:18 +0100
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On Mon, 2009-03-09 at 02:53 +0100, Frans Pop wrote:
> Follow-up to an issue reported on the linux-s390 list, seen in the 
> Hercules S/390 emulator.
> 
> On Sunday 08 March 2009, Frans Pop wrote:
> > Well, not quite. It does boot successfully and I do get a login prompt.
> > I can also login on the console or connect with SSH, but in both cases
> > the system again gets into some loop before I actually get a shell
> > prompt.
> 
> During the bisection series the system would sometimes enter the loop 
> during the boot procedure, before I tried to logon. After it enters the 
> loop one processor just goes racing at 100%.

Where? Do you have NMI watchdog output, or even sysrq-t?

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