linux-kernel - Re: 5.4+: PAGE FAULT crashes the system multiple times per 24h

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Date:   Mon, 10 Feb 2020 17:04:41 +0100
From:   Gabriel C <nix.or.die@...il.com>
To:     Udo van den Heuvel <udovdh@...all.nl>
Cc:     "linux-mm@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: 5.4+: PAGE FAULT crashes the system multiple times per 24h

Am Mo., 10. Feb. 2020 um 15:39 Uhr schrieb Udo van den Heuvel
<udovdh@...all.nl>:
>
> Hello,

Hi,

>
> Would this be a bug in the mm area?

I don' know, possible.
Can be everything and nothing, bad OC, bad RAM, broken firmware could
be a cause too.

>
> For bug https://bugzilla.kernel.org/show_bug.cgi?id=206191 I have been
> bisecting way but now the process landed me with a kernel that cannot
> find the root fs. (with either good or bad bisect choices)
>
> Pictures of the crash that is the reason for this bisect:
> https://bugzilla.kernel.org/attachment.cgi?id=286787
> https://bugzilla.kernel.org/attachment.cgi?id=286789
> https://bugzilla.kernel.org/attachment.cgi?id=286791
> https://bugzilla.kernel.org/attachment.cgi?id=286793
>

I looked at some of your logs. I hit freeze/crashes similar to yours
with an R3 APU a while back.
That was caused by a mismatch in kernel -> Xorg driver <-> mesa code + firmware.

I think first you should try to fix your amdgpu bug which is this one:
https://gitlab.freedesktop.org/drm/amd/issues/963

And the fixes are the patchset there:
https://patchwork.freedesktop.org/series/72733/

Also, can you try booting without all these crazy options?
As an example why would you need to force ACPI on your HW?

BR,

Gabriel C.