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

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Date:	Sat, 16 Jun 2007 13:40:53 -0700 (PDT)
From:	"Mr. James W. Laferriere" <babydr@...y-dragons.com>
To:	Linux Kernel Maillist <linux-kernel@...r.kernel.org>
Subject: Machine Check Exception: 0...04

 	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>

root@(none):~ # uname -a
Linux (none) 2.6.21.5 #1 SMP Fri Jun 15 04:37:23 UTC 2007 i686 pentium4 i386 GNU/Linux

Complete serial console log of a boot to single user mode is here .

http://www.baby-dragons.com/test-2.6.21.5-mptscsi-4.00.10.00-2007006161326.log

 		Tia ,  JimL
-- 
+-----------------------------------------------------------------+
| James   W.   Laferriere | System   Techniques | Give me VMS     |
| Network        Engineer | 663  Beaumont  Blvd |  Give me Linux  |
| babydr@...y-dragons.com | Pacifica, CA. 94044 |   only  on  AXP |
+-----------------------------------------------------------------+

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