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SubjectRe: MSI K8D-Master - GART error 3
Date
On Wednesday, August 06, 2003 1:42 AM [GMT+1200=NZT],
Andi Kleen <ak@colin2.muc.de> wrote:
>
> Ok that's the very old MCE code that incorrectly enabled the
> northbridge machine check. Don't use that or use mce=off. However I
> still think it's a driver bug in your case. If it was the shakey GART
> MCE itself you would get a panic because it's a unrecoverable MCE.
> More likely the driver is accessing PCI DMA mappings after they got
> unmapped, which is a serious bug, but somehow not serious enough that
> the northbridge triggers the MCE.
>
> I was confused by your statement that the SuSE 8.2 beta9 kernel
> generated that. It didn't because it doesn't contain that old code.
>
> What does a modern kernel like the SuSE one or a x86-64.org kernel
> generate exactly?
>

I have reinstalled SuSE now, and I apologise as I was only partially
correct. I do get errors, but they are slightly different from RH. They
appear to be saying the same thing, though. Every 30 seconds I get:


Aug 11 10:37:06 terra kernel: Northbridge status 9405c00000000a13
Aug 11 10:37:06 terra kernel: ECC syndrome bits b
Aug 11 10:37:06 terra kernel: extended error ecc error
Aug 11 10:37:06 terra kernel: link number 0
Aug 11 10:37:06 terra kernel: corrected ecc error
Aug 11 10:37:06 terra kernel: error address valid
Aug 11 10:37:06 terra kernel: error enable
Aug 11 10:37:06 terra kernel: previous error lost
Aug 11 10:37:06 terra kernel: error address 00000000003e4710
Aug 11 10:37:36 terra kernel: Northbridge status 9405c00000000813
Aug 11 10:37:36 terra kernel: ECC syndrome bits b
Aug 11 10:37:36 terra kernel: extended error ecc error
Aug 11 10:37:36 terra kernel: link number 0
Aug 11 10:37:36 terra kernel: corrected ecc error
Aug 11 10:37:36 terra kernel: error address valid
Aug 11 10:37:36 terra kernel: error enable
Aug 11 10:37:36 terra kernel: previous error lost
Aug 11 10:37:36 terra kernel: error address 00000000003c4220


These suggest it's just reporting ECC corrections. Why would it do this
exactly every 30 seconds? (or is that just the reporting interval?)


# uname -a
Linux terra 2.4.19-SMP #1 SMP Wed Jun 25 21:37:18 UTC 2003 x86_64
unknown unknown GNU/Linux


thanks for the help,

-Simon

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