Messages in this thread | | | Date | Sun, 12 Sep 2004 08:36:55 +0200 | From | Willy Tarreau <> | Subject | Re: CPU Context corruption |
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On Sat, Sep 11, 2004 at 01:40:55PM +0100, Alan Cox wrote: > On Sad, 2004-09-11 at 12:19, Nigel Kukard wrote: > > What does this error mean? > > > > > > CPU 0: Machine Check Exception: 0000000000000004 > > Bank 0: 820000001040080F > > > > > > I have a Matsonic 9097c motherboard, 2.4Ghz prescott celeron cpu. This > > error seems to be random. We have replaced the motherboard & cpu to no > > avail. > > It normally indicates a hardware problem. The precise meaning of all the > bits is in the Intel chip docs (volume 3). If you've swapped the > mainboard/cpu it might just be bad RAM.
He can also get precise info with Dave Jones' parsemce tool :
http://www.kernel.org/pub/linux/kernel/people/davej/tools/
It currently says :
Status: (4) Machine Check in progress. Restart IP invalid. parsebank(0): 820000001040080f @ 0 External tag parity error CPU state corrupt. Restart not possible Bus and interconnect error Participation: Local processor originated request Timeout: Request did not timeout Request: Generic error Transaction type : Invalid Memory/IO : Other
Since it says it's neither memory nor I/O, I think it might be related to a PCI parity error with some card, either during transfers or config access.
Regards, Willy
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