linux-kernel - Re: 5.6.12 MCE on AMD EPYC 7502

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Message-ID: <20200529115720.GF9011@zn.tnic>
Date:   Fri, 29 May 2020 13:57:20 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Dmitry Antipov <dmantipov@...dex.ru>
Cc:     linux-kernel@...r.kernel.org, Yazen Ghannam <yazen.ghannam@....com>
Subject: Re: 5.6.12 MCE on AMD EPYC 7502

On Fri, May 29, 2020 at 01:55:29PM +0300, Dmitry Antipov wrote:
> Hello,
> 
> I'm facing the following kernel messages running Debian 9 with
> custom 5.6.12 kernel running on AMD EPYC 7502 - based hardware:
> 
> [138537.806814] mce: [Hardware Error]: Machine check events logged
> [138537.806818] [Hardware Error]: Corrected error, no action required.
> [138537.808456] [Hardware Error]: CPU:0 (17:31:0) MC27_STATUS[Over|CE|MiscV|-|-|-|SyndV|-|-|-]: 0xd82000000002080b
> [138537.810080] [Hardware Error]: IPID: 0x0001002e00001e01, Syndrome: 0x000000005a000005
> [138537.811694] [Hardware Error]: Power, Interrupts, etc. Ext. Error Code: 2, Link Error.
> [138537.813281] [Hardware Error]: cache level: L3/GEN, mem/io: IO, mem-tx: GEN, part-proc: SRC (no timeout)
> 
> Is it related to some (not so) known CPU errata?

Who knows.

> Should I try to update microcode, motherboard firmware, kernel, or whatever else?

Yeah, BIOS update might be a good idea, if there's a newer version for
your board.

-- 
Regards/Gruss,
    Boris.

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