Re: [gentoo-user] [OT] Memory error messages in dmesg

[Alexander Kapshuk]

On Sat, Nov 28, 2015 at 12:01 PM, Dan Johansson <Dan.Johansson@×××.nu>
wrote:

> I have started noticing the following messages in the dmesg output (and in
> the log-files) on my Gentoo rig:
>
> [46545.779803] [Hardware Error]: Corrected error, no action required.
> [46545.779984] [Hardware Error]: CPU:3 (15:2:0)
> MC2_STATUS[Over|CE|MiscV|-|AddrV|-|-|CECC]: 0xdc2540f000040136
> [46545.780434] [Hardware Error]: MC2 Error Address: 0x00000002cc215138
> [46545.780605] [Hardware Error]: MC2 Error: Fill ECC error on data fills.
> [46545.783764] [Hardware Error]: cache level: L2, tx: DATA, mem-tx: DRD
> [46545.784088] mce: [Hardware Error]: Machine check events logged
> [46545.791786] [Hardware Error]: Corrected error, no action required.
> [46545.791958] [Hardware Error]: CPU:2 (15:2:0)
> MC2_STATUS[Over|CE|MiscV|-|AddrV|-|-|CECC]: 0xdc25405000040136
> [46545.792382] [Hardware Error]: MC2 Error Address: 0x00000002cc2158b8
> [46545.792579] [Hardware Error]: MC2 Error: Fill ECC error on data fills.
> [46545.792791] [Hardware Error]: cache level: L2, tx: DATA, mem-tx: DRD
> [46545.793088] mce: [Hardware Error]: Machine check events logged
>
> I have been running memtest for some time (~100h) and have not gotten any
> error message - so I am suspecting that this is a CPU problem. Am I correct?
>
> If it was just these error-messages I would not be that worried, but I
> have started to get a lot of "hangers" on this rig when compiling larger
> packages. Could there be a relation to the error-messages?
>
> KR,
> --
> Dan Johansson, <http://www.dmj.nu>
> ***************************************************
> This message is printed on 100% recycled electrons!
> ***************************************************
>
>
Do you have an AMD, or an Intel CPU on board?

Here are a couple links to bug reports from people who had a similar issue
with an AMD CPU.
https://www.novell.com/support/kb/doc.php?id=7013006
https://bugzilla.redhat.com/show_bug.cgi?id=1078604