linux-kernel - Re: 2.6.38-rc2: Uhhuh. NMI received for unknown reason 2d on CPU 0.

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Message-ID: <20110201184110.GB21209@redhat.com>
Date:	Tue, 1 Feb 2011 13:41:10 -0500
From:	Don Zickus <dzickus@...hat.com>
To:	Cyrill Gorcunov <gorcunov@...il.com>
Cc:	George Spelvin <linux@...izon.com>, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Lin Ming <ming.m.lin@...el.com>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: 2.6.38-rc2: Uhhuh. NMI received for unknown reason 2d on CPU 0.

On Tue, Feb 01, 2011 at 08:52:19PM +0300, Cyrill Gorcunov wrote:
> On 02/01/2011 07:27 PM, George Spelvin wrote:
> > Since upgrading to -rc2 (-rc3 is compiling right now), I've been getting
> > complaints at irregular intervals.  This didn't used to happen with 2.6.37.
> > 
> ...
> > Should I bisect this, or does someone know what might be happening?
> > 
> > Thank you!
> > 
> 
>  I fear it's known issue at moment, we're trying to resolve it. There is
> an option -- to disable nmi_watchdog (nmi_watchdog=0 boot option).
> 
>  But if you have a will or would like to help debug the problem -- mind to
> try the patch below? Note the patch is ugly at moment and must *not* be
> running on non-P4 system (and I only compile-tested it so no guarantees
> at all, and I've CC'ed a couple of people as well)

Unfortunately, I have not had success with patch below on my system. :-(

Cheers,
Don
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