linux-kernel - 5.6.12 MCE on AMD EPYC 7502

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Message-ID: <be415508-246f-d934-b449-4cadbdb0acc4@yandex.ru>
Date:   Fri, 29 May 2020 13:55:29 +0300
From:   Dmitry Antipov <dmantipov@...dex.ru>
To:     linux-kernel@...r.kernel.org
Subject: 5.6.12 MCE on AMD EPYC 7502

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

Full dmesg and dmidecode attached.

Dmitry

View attachment "dmesg.txt" of type "text/plain" (148582 bytes)

View attachment "dmidecode.txt" of type "text/plain" (39509 bytes)