linux-kernel - Re: Machine Check Exception: 0...04

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Message-ID: <9a8748490706171542t20d03743h46243976ffbf9917@mail.gmail.com>
Date:	Mon, 18 Jun 2007 00:42:52 +0200
From:	"Jesper Juhl" <jesper.juhl@...il.com>
To:	"Mr. James W. Laferriere" <babydr@...y-dragons.com>
Cc:	"Linux Kernel Maillist" <linux-kernel@...r.kernel.org>
Subject: Re: Machine Check Exception: 0...04

On 18/06/07, Mr. James W. Laferriere <babydr@...y-dragons.com> wrote:
>         Hello All ,  As a continuation .
>
> On Sat, 16 Jun 2007, Mr. James W. Laferriere wrote:
> >       Hello All ,  Does anoyone know howto identify a cause for these(*) ?
> >       Or of any tools to help in the identification of the cause ?
> >       So far the Machine checks only happen when I am running bonnie++
> > against
> >       my software raid6 array .
> >
> >       I have done everything I know to do to attempt to ascertain what is
> >       causing the machine checks .
> >       ie:
> > 1)    memtest86+ for days ,  no errors .
> > 2)    cpuburnP6 ,  The tests run were 'cpuburnP6 E' & 'cpuburnP6 H' for ~
> >       60 minutes each .  All CPU's & HT were at 96+<->100% for 60+ Minutes
> > ,
> >       no excessive heating or lockups . In single user mode of course .
> >       I know cpuburn is old but it can excersize the comms between l1 & cpu
> >       & l1 & l2 -> cpu if done right .
> >
> > (*)
> > CPU 5: Machine Check Exception: 0000000000000004
> > CPU 4: Machine Check Exception: 0000000000000004
> > Kernel panic - not syncing: Unable to continue
> > <system reboots>
> >

An MCE is an error reported by the hardware. It is most likely not a
software problem, not much kernel people can do about it.

Google for "parsemce.c" to find a program that'll decode most MCE's for you.

You may also want to contact your hardware vendor to get an exact
explanation for the error.

-- 
Jesper Juhl <jesper.juhl@...il.com>
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