linux-kernel - Re: [BUG,2.6.29-rc7,s390] System goes into endless loop during boot or logon

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Message-Id: <200903121935.32774.elendil@planet.nl>
Date:	Thu, 12 Mar 2009 19:35:30 +0100
From:	Frans Pop <elendil@...net.nl>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Jan Glauber <jang@...ux.vnet.ibm.com>, linux-s390@...r.kernel.org,
	Hendrik Brueckner <brueckner@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...e.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [BUG,2.6.29-rc7,s390] System goes into endless loop during boot or logon

On Thursday 12 March 2009, Frans Pop wrote:
> On Thursday 12 March 2009, Jan Glauber wrote:
> > > AFAICT s390 does not have an NMI watchdog. And I have no idea how I
> > > could trigger a sysrq given that I can't login and only have a dumb
> > > console or SSH session to work with anyway.
> >
> > You can try to trigger sysrq by ^-, so to get the task view type:
> > .^-t
>
> Thanks a lot Jan! On a running system that works, so now the only
> question is if it also works when the system is looping. Will try
> later.

Unfortunately it does not work when the system is hung, not even if I try 
it as a "priority" command.

We're still working on my other 2.6.28 regression. I guess the smart thing 
to do is wait and see what comes out of that first, so let's put this one 
on hold for now.

Cheers,
FJP
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