From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sarah Newman <srn@prgmr.com>
Subject: Re: [general question] rare silent data corruption when writing data
Date: Sun, 10 May 2020 12:05:00 -0700
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To: Chris Murphy <lists@colorremedies.com>, Michal Soltys <msoltyspl@yandex.pl>
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On 5/7/20 8:44 PM, Chris Murphy wrote:
> 
> I would change very little until you track this down, if the goal is
> to track it down and get it fixed.
> 
> I'm not sure if LVM thinp is supported with LVM raid still, which if
> it's not supported yet then I can understand using mdadm raid5 instead
> of LVM raid5.


My apologies if this ideas was considered and discarded already, but the bug being hard to reproduce right after reboot and the error being exactly 
the size of a page sounds like a memory use after free bug or similar.

A debug kernel build with one or more of these options may find the problem:

CONFIG_DEBUG_PAGEALLOC
CONFIG_DEBUG_PAGEALLOC_ENABLE_DEFAULT
CONFIG_PAGE_POISONING + page_poison=1
CONFIG_KASAN

--Sarah