Re: x86_64 mce_log question

[Andi Kleen]

Evgeny Rodichev <er@xxxxxxxxxx> writes:

> Hello,
> 
> at Opteron-based x86_64 system sometimes I get message
> 
> Machine check events logged
> 
> (non-fatal). How can I read the correspondent events?

Read the help

config X86_MCE
        bool "Machine check support" if EMBEDDED
        default y
        help
           Include a machine check error handler to report hardware errors.
           This version will require the mcelog utility to decode some
           machine check error logs. See
           ftp://ftp.x86-64.org/pub/linux/tools/mcelog


> From the source
> code (arch/x86_64/kernel/mce.c) it sounds like some misc device with
> MISC_MCELOG_MINOR 227 is registered (with name "mcelog"?), but there is
> no such device under /dev.

Your distribution is broken then. In fact it is supposed to run
mcelog regularly from a cronjob to log machine check events into
a disk log. Complain to them.

-Andi
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