linux-kernel - random insta-reboots on AMD Phenom II

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Message-ID: <20170930020516.sybqsf5yn2gzuph3@angband.pl>
Date:   Sat, 30 Sep 2017 04:05:16 +0200
From:   Adam Borowski <kilobyte@...band.pl>
To:     linux-kernel@...r.kernel.org
Subject: random insta-reboots on AMD Phenom II

Hi!
I'm afraid I see random instant reboots on current -rc, approximately
once per day, only under CPU load.  There's nothing on serial/etc -- just
an immediate reboot.  4.13 works perfectly; last kernel I've tried is
v4.14-rc2-165-g770b782f555d.  gcc 7.2.0-7 (Debian).

CPU is AMD Phenom II X6 1055T (family 10h).

Sometimes it dies within a few minutes of load, sometimes all is fine for a
couple of days.  This randomness makes bisecting not really an option.

Any hints how to debug this?

Meow!
-- 
⢀⣴⠾⠻⢶⣦⠀ We domesticated dogs 36000 years ago; together we chased
⣾⠁⢰⠒⠀⣿⡁ animals, hung out and licked or scratched our private parts.
⢿⡄⠘⠷⠚⠋⠀ Cats domesticated us 9500 years ago, and immediately we got
⠈⠳⣄⠀⠀⠀⠀ agriculture, towns then cities.     -- whitroth on /.