[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=98276

            Bug ID: 98276
           Summary: Kernel Panic on shutdown caused by "drm/amdgpu: always
                    apply pci shutdown callbacks"
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: johannes.hirte@datenkhaos.de

Kernel 4.9-rc1 fails on shutdown/reboot with a panic. Bisect pointed me to 

00ea8cba5ef7b783f11cb1a0b900b7c18d2ce0b6 is the first bad commit
commit 00ea8cba5ef7b783f11cb1a0b900b7c18d2ce0b6
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Thu Sep 22 14:40:29 2016 -0400

    drm/amdgpu: always apply pci shutdown callbacks (v2)

    We can't properly detect all hypervisors and we
    need this to properly tear down the hardware.

    v2: trivial warning fix

    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

:040000 040000 868a00ff980f95dac82b908df0737342bf40cdc3
02bf2cf4e8797d37d454301afedf2f97735b60ca M      drivers

After removing this commit, everything works again. System is a Carrizo.

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[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=98276

--- Comment #1 from Alex Deucher <alexdeucher@gmail.com> ---
Can you attach the panic messages?

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[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

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https://bugs.freedesktop.org/show_bug.cgi?id=98276

--- Comment #2 from Alex Deucher <alexdeucher@gmail.com> ---
If you can't get them during a reboot/shutdown, you can reproduce it my
unloading the module as they use the same code.  E.g., modprobe -r amdgpu

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[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

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https://bugs.freedesktop.org/show_bug.cgi?id=98276

--- Comment #3 from Johannes Hirte <johannes.hirte@datenkhaos.de> ---
I only have a black screen when the panic happens. Rebuild the kernel with
amdgpu as module for the unloading module option, but this way I can't remove
the driver cause the module is in use.

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[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=98276

Mike Lothian <mike@fireburn.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mike@fireburn.co.uk

--- Comment #4 from Mike Lothian <mike@fireburn.co.uk> ---
rmmod -f amdgpu should do the trick

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[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=98276

--- Comment #5 from Johannes Hirte <johannes.hirte@datenkhaos.de> ---
(In reply to Mike Lothian from comment #4)
> rmmod -f amdgpu should do the trick

This way I can remove the module, but I don't get the panic. The screen goes
black and I have to reboot via SysReq Keys.

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[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=98276

--- Comment #6 from Alex Deucher <alexdeucher@gmail.com> ---
You can also unbind the console before unloading the module.

sudo bash -c "echo 0 > /sys/class/vtconsole/vtcon1/bind"
sudo modprobe -r amdgpu

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[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=98276

--- Comment #7 from Johannes Hirte <johannes.hirte@datenkhaos.de> ---
(In reply to Alex Deucher from comment #6)
> You can also unbind the console before unloading the module.
> 
> sudo bash -c "echo 0 > /sys/class/vtconsole/vtcon1/bind"

First time this resulted in a black screen with a panic, next time the system
hung, but reboot via SysReq Keys worked. Always happened on the unbind.

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[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=98276

--- Comment #8 from Johannes Hirte <johannes.hirte@datenkhaos.de> ---
Created attachment 127488
  --> https://bugs.freedesktop.org/attachment.cgi?id=127488&action=edit
dmesg output after unloading amdgpu.ko

I've retried removing the module via ssh session and the second time I was
successful. The dmesg output is attached.

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[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

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https://bugs.freedesktop.org/show_bug.cgi?id=98276

--- Comment #9 from Ernst Sjöstrand <ernstp@gmail.com> ---
Is this fixed somewhere now also?
Related to https://bugs.freedesktop.org/show_bug.cgi?id=98200 I guess?

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[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=98276

--- Comment #10 from Johannes Hirte <johannes.hirte@datenkhaos.de> ---
(In reply to Ernst Sjöstrand from comment #9)
> Is this fixed somewhere now also?

still happens with 4.9-rc2 as well as 4.10-wip

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[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

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https://bugs.freedesktop.org/show_bug.cgi?id=98276

--- Comment #11 from Johannes Hirte <johannes.hirte@datenkhaos.de> ---
As the dmesg shows a problem in the ACP code, I've just disabled it now and it
works. Don't know what's the real problem, but without ACP my system reboot
fine.

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[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

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https://bugs.freedesktop.org/show_bug.cgi?id=98276

--- Comment #12 from Alex Deucher <alexdeucher@gmail.com> ---
Created attachment 127736
  --> https://bugs.freedesktop.org/attachment.cgi?id=127736&action=edit
possible fix

This should fix it.

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[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

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https://bugs.freedesktop.org/show_bug.cgi?id=98276

--- Comment #13 from Johannes Hirte <johannes.hirte@datenkhaos.de> ---
(In reply to Alex Deucher from comment #12)
> Created attachment 127736 [details] [review]
> possible fix
> 
> This should fix it.

Yes, this fixes the panic on reboot/unloading the driver.

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[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

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https://bugs.freedesktop.org/show_bug.cgi?id=98276

Martin Peres <martin.peres@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |MOVED

--- Comment #14 from Martin Peres <martin.peres@free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/106.

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