Date: Wed, 25 Dec 2002 19:09:00 -0800 (PST)
From: Josh Brooks <user@mail.econolodgetulsa.com>
To: Bubba <bp@dynastytech.com>
cc: linux-kernel@vger.kernel.org
Subject: Re: CPU failures ... or something else ?
In-Reply-To: <200212252002.24898.bp@dynastytech.com>
Message-ID: <20021225190643.E6873-100000@mail.econolodgetulsa.com>
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Oh and by the way, this is a dell poweredge 2450, dual 866 p3 cpus, 2gigs
ram, and using a PERC 3/D.  I have a 2.4.1 system running on _identical_
hardware with no problems, and this system that is MCE'ing is a 2.4.16.

So ... not sure if that raises any red flags as far as false/spurious MCEs
are concerned, but either way comments are appreciated.

I will try the nomce option just in case, but I suspect I have bad
hardware.  Again, any comments / war stories appreciated.

thanks!

On Wed, 25 Dec 2002, Bubba wrote:

> try turning off the Machine Check Exception in the kernel as it is just buggy
> on some machines, not necessarily a bug in the kernel, or without
> recompiling, use the kernel param "nomce"
>
> On Wednesday 25 December 2002 19:53, Josh Brooks wrote:
> > Hello,
> >
> > I have a dual p3 866 running 2.4 kernel that is crashing once every few
> > days leaving this on the console:
> >
> >
> > Message from syslogd@localhost at Tue Dec 24 11:30:31 2002 ...
> > localhost kernel: CPU 1: Machine Check Exception: 0000000000000004
> >
> > Message from syslogd@localhost at Tue Dec 24 11:30:32 2002 ...
> > localhost kernel: Bank 4: b200000000040151
> >
> > Message from syslogd@localhost at Tue Dec 24 11:30:32 2002 ...
> > localhost kernel: Kernel panic: CPU context corrupt
> >
> >
> >
> > Word on the street is that this indicates hardware failure of some kind
> > (cpu, bus, or memory).  My main question is, is that very surely the
> > culprit, or is it also possible that all of the hardware is perfect and
> > that a bug in the kernel code or some outside influence (remote exploit)
> > is causing this crash ?
> >
> > Basically, I am ordering all new hardware to swap out, and I just want to
> > know if there is some remote possibility that my hardware is actually just
> > fine and this is some kind of software error ?
> >
> > ALSO, I have not been physically at the console when this has happened,
> > and have not tried this yet, but whatever that thing is where you press
> > ctrl-alt-printscreen and get to enter those post-crash commands - do you
> > think that would work in this situation, or does the above error hard lock
> > the system so you can't do those emergency measures ?
> >
> > thanks!
> >
> >
> > -
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