linux-kernel - RESEND: Crash with 4.12.4 kernel and high disk load (monthly RAID 6 check)

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Message-ID: <c2df7906-67b2-b33f-0e82-49e6ef53f5f1@unsolicited.net>
Date:   Sun, 6 Aug 2017 18:37:48 +0100
From:   David R <david@...olicited.net>
To:     linux-kernel@...r.kernel.org, linux-raid@...r.kernel.org
Subject: RESEND: Crash with 4.12.4 kernel and high disk load (monthly RAID 6
 check)

This morning was the triggering of the monthly MD RAID check (the first
since I installed a 4.12 series kernel on my home server). I can get a
repeatable (takes hours though) complete hang when checking my RAID 6
array. No log entries, just the attached on the server console
(apologies for bad image).

I'm attaching boot dmesg and configuration.

I'm happy to chase this, although the check runs will need to be at the
weekend when I'm near the server.

Cheers
David

(resent due to mistakenly sending a 2MB image first time)

View attachment "dmesg-20170806.txt" of type "text/plain" (98356 bytes)

View attachment ".config" of type "text/plain" (152337 bytes)

Download attachment "IMG_20170806_145952.jpg" of type "image/jpeg" (92285 bytes)