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* Machine Check Exception
@ 2008-10-05 17:41 Matteo Croce
  0 siblings, 0 replies; 18+ messages in thread
From: Matteo Croce @ 2008-10-05 17:41 UTC (permalink / raw)
  To: hpa; +Cc: tglx, mingo, linux-kernel

Hi,

while bugging the wireless devs about a freeze i've discovered an hardware 
bug:

HARDWARE ERROR. This is *NOT* a software problem!
Please contact your hardware vendor
CPU 0 4 northbridge   Northbridge Watchdog error
       bit57 = processor context corrupt
       bit61 = error uncorrected
  bus error 'generic participation, request timed out
      generic error mem transaction
      generic access, level generic'
STATUS b200000000070f0f MCGSTATUS 4

this is triggered byt the ath9k wireless driver when booting with smp > 1
here is the kernel bug report:
http://bugzilla.kernel.org/show_bug.cgi?id=11527#c68

here I asked support in the official AMD forum:
http://forums.amd.com/forum/messageview.cfm?catid=22&threadid=101051


I ask you this as you are the "CPU ERRATA WORKAROUNDS" man,
and I CC people which are listed in the "X86 ARCHITECTURE (32-BIT AND 64-BIT)"
entry.

Best Regards,
Matteo Croce

^ permalink raw reply	[flat|nested] 18+ messages in thread
* Machine check exception
@ 2011-07-27 11:05 F. P. Beekhof
  2011-07-27 13:03 ` Borislav Petkov
  0 siblings, 1 reply; 18+ messages in thread
From: F. P. Beekhof @ 2011-07-27 11:05 UTC (permalink / raw)
  To: Jeff Garzik, Mikael Pettersson, linux-ide

Hello,

I'm having some trouble with my Promise TX4302: it seems to cause kernel 
panics due to machine check exceptions.

The MCE reads:
[Hardware Error]: CPU 0: Machine Check Exception: 4 Bank 4: ...
[Hardware Error]: TSC 264f8ca046
and then continues about a NorthBridge Watchdog timeout.
After that, there is kernel stack dump:

See http://tech.unige.ch/mce.jpg or http://tech.unige.ch/mce.png for a 
screenshot.

These always happen when I'm accessing disks attached to the TX4302, as 
far as I can tell. Motherboard is an Asus a8v, cpu is amd athlon64, 
stock ubuntu 11.04 kernel.

I have no idea where to go from here though. I can provide any 
information required or test patches, please ask.

Best, and thanks in advance,

F. Beekhof

^ permalink raw reply	[flat|nested] 18+ messages in thread
* machine check exception
@ 2003-12-03 11:05 Nicholas Mucci
  2003-12-03 13:05 ` Russell Coker
  0 siblings, 1 reply; 18+ messages in thread
From: Nicholas Mucci @ 2003-12-03 11:05 UTC (permalink / raw)
  To: selinux

Hi,
	Recently I installed the 2.6.0-test6-selinux1 kernel on my box and
noticed that it will occassionally throw a machine check exception after
detecting IDE devices on startup.  I never saw this occur with the
2.6.0-test3 selinux kernel, 2.4.18 from RedHat 8, 2.4.9 or 2.4.8 on this
machine.  I know there is probably a hardware issue that is causing this,
but I am curious as to why the MCE only surfaces now.  If I use the older
kernels this problem does not show up and I don't see an MCE.  Has anyone
seen or heard of this before?  The MCE handler was modified in test5
to remove "useless junk" that caused problems on some cpus.  This may be
just a mainstream 2.6 thing, but I figured I would check and see if
anybody here has any thoughts or ideas about this.

Thanks,

---------------------------------------
Nicholas Mucci
Institute for Educational Research
and Public Service
University of Kansas
Home: 785-812-2520
Cell: 847-445-7023


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^ permalink raw reply	[flat|nested] 18+ messages in thread
* Machine Check Exception
@ 2002-12-15 20:22 Felix von Leitner
  2002-12-15 20:39 ` Jan-Benedict Glaw
  2002-12-16 19:55 ` Felipe W Damasio
  0 siblings, 2 replies; 18+ messages in thread
From: Felix von Leitner @ 2002-12-15 20:22 UTC (permalink / raw)
  To: linux-kernel

As soon as I start oggenc on my 2.5 kernel, I get this message:

  CPU 0: Machine Check Exception: 0000000000000004
  Bank 0: f60600000000135 at 000000001ea46db0
  Kernel panic: CPU context corrupt

This vc then hangs, but I could log in and write down the message on
another vc.  Is this a hardware error?  Should I replace my CPU?  My
memory?  Is my machine overheating?  I have had several strange and
unexplained segfaults and reboots under 2.4 recently.

Felix

^ permalink raw reply	[flat|nested] 18+ messages in thread
end of thread, other threads:[~2011-08-01  8:49 UTC | newest]

Thread overview: 18+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2008-10-05 17:41 Machine Check Exception Matteo Croce
  -- strict thread matches above, loose matches on Subject: below --
2011-07-27 11:05 Machine check exception F. P. Beekhof
2011-07-27 13:03 ` Borislav Petkov
2011-07-27 15:31   ` F. P. Beekhof
2011-07-27 17:03     ` Borislav Petkov
2011-07-27 20:54       ` F. P. Beekhof
2011-07-27 21:30         ` F. P. Beekhof
2011-07-28  7:47           ` Borislav Petkov
2011-07-31  8:22             ` F. P. Beekhof
2011-07-31 12:09               ` Borislav Petkov
2011-07-31 15:56                 ` F. P. Beekhof
2011-08-01  8:48                   ` Borislav Petkov
2003-12-03 11:05 machine " Nicholas Mucci
2003-12-03 13:05 ` Russell Coker
2003-12-03 13:19   ` Stephen Smalley
2002-12-15 20:22 Machine Check Exception Felix von Leitner
2002-12-15 20:39 ` Jan-Benedict Glaw
2002-12-16 19:55 ` Felipe W Damasio

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