Re: [x86_64] how worried should I be about MCEs?

[bert hubert <ahu@ds9a.nl>]

On Sat, Apr 30, 2005 at 01:16:49PM -0700, Andy Lutomirski wrote:
> Every now and then, after rebooting, the kernel notices some MCEs. 
> Should I be worried about this?

If these reports are true, they would be worrying. But I find them a bit
hard to believe - the bit combinations don't appear to make sense.

I have an AMD64 machine which logs 'MCE reported' every once in a while but
otherwise functions perfectly and I haven't yet coaxed it into telling me
the content of the errors.

Might there be a bug here? How did you create this log?

> STATUS f66440000000438d MCGSTATUS 0
> MCE 1
> CPU 0 1 instruction cache from boot or resume
> ADDR 75e2bb87ec57f8e0
>   Instruction cache ECC error
>        bit32 = err cpu0
>        bit33 = err cpu1
>        bit35 = res3
>        bit43 = res11
>        bit45 = uncorrected ecc error
>        bit46 = corrected ecc error
>        bit55 = res23
>        bit56 = res24
>        bit57 = processor context corrupt
>        bit59 = misc error valid
>        bit61 = error uncorrected
>        bit62 = error overflow (multiple errors)

This would be one hell of an error - both corrected and uncorrected.

Regards,

bert

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