CPU context corrupt?

CPU context corrupt?

[Aquila]

Hi

I have had this problem quite a while now: when playing tribes2 or when
a particular CPU intensive xscreensaver is running, X would often hang.
I used to be able to ssh from another box or use SysRq-K to kill X and
restart (but I never figured out what the problem was).

Ever since upgrading to 2.4.9-ac3 (from 2.4.8-ac5 I believe), whenever
it hangs in X the computer would beep and give this message in syslog:

Sep  4 21:43:41 hamlet kernel: CPU 0: Machine Check Exception:
0000000000000004
Sep  4 21:43:41 hamlet kernel: Bank 1: f600200000000152 at
7600200000000152
Sep  4 21:43:41 hamlet kernel: Bank 2: d40040000000017a at
540040000000017a
Sep  4 21:43:41 hamlet kernel: Kernel panic: CPU context corrupt

It hangs there, and SysRq-K is no longer able to kill X properly. sshd
stops working as well. What does this message mean? Do I have faulty
hardware? 

My CPU is an Athlon 1.2Ghz, not overclocked. Any ideas what's wrong?

Thanks,
Aq.

Re: CPU context corrupt?

[H. Peter Anvin]

Followup to:  <999606788.1571.12.camel@hamlet>
By author:    Aquila <aquila@hypox.org>
In newsgroup: linux.dev.kernel
>
> Hi
> 
> I have had this problem quite a while now: when playing tribes2 or when
> a particular CPU intensive xscreensaver is running, X would often hang.
> I used to be able to ssh from another box or use SysRq-K to kill X and
> restart (but I never figured out what the problem was).
> 
> Ever since upgrading to 2.4.9-ac3 (from 2.4.8-ac5 I believe), whenever
> it hangs in X the computer would beep and give this message in syslog:
> 
> Sep  4 21:43:41 hamlet kernel: CPU 0: Machine Check Exception:
> 0000000000000004
> Sep  4 21:43:41 hamlet kernel: Bank 1: f600200000000152 at
> 7600200000000152
> Sep  4 21:43:41 hamlet kernel: Bank 2: d40040000000017a at
> 540040000000017a
> Sep  4 21:43:41 hamlet kernel: Kernel panic: CPU context corrupt
> 
> It hangs there, and SysRq-K is no longer able to kill X properly. sshd
> stops working as well. What does this message mean? Do I have faulty
> hardware? 
> 

Yes.

	-hpa
-- 
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