[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  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |MOVED

--- Comment #14 from Martin Peres  ---
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[Bug 98276] Kernel Panic on shutdown caused by "drm/amdgpu: always apply pci shutdown callbacks"

[bugzilla-dae...@freedesktop.org]

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

--- Comment #13 from Johannes Hirte  ---
(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"

[bugzilla-dae...@freedesktop.org]

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

--- Comment #12 from Alex Deucher  ---
Created attachment 127736
  --> https://bugs.freedesktop.org/attachment.cgi?id=127736=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"

[bugzilla-dae...@freedesktop.org]

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

--- Comment #11 from Johannes Hirte  ---
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"

[bugzilla-dae...@freedesktop.org]

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

--- Comment #10 from Johannes Hirte  ---
(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"

[bugzilla-dae...@freedesktop.org]

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

--- Comment #9 from Ernst Sjöstrand  ---
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-dae...@freedesktop.org]

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

--- Comment #8 from Johannes Hirte  ---
Created attachment 127488
  --> https://bugs.freedesktop.org/attachment.cgi?id=127488=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"

[bugzilla-dae...@freedesktop.org]

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

--- Comment #7 from Johannes Hirte  ---
(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"

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

--- Comment #6 from Alex Deucher  ---
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"

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

--- Comment #5 from Johannes Hirte  ---
(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"

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

Mike Lothian  changed:

   What|Removed |Added

 CC||mike at fireburn.co.uk

--- Comment #4 from Mike Lothian  ---
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"

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

--- Comment #3 from Johannes Hirte  ---
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"

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

--- Comment #2 from Alex Deucher  ---
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 #1 from Alex Deucher  ---
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"

[bugzilla-dae...@freedesktop.org]

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 at lists.freedesktop.org
  Reporter: johannes.hirte at 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 
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 

:04 04 868a00ff980f95dac82b908df0737342bf40cdc3
02bf2cf4e8797d37d454301afedf2f97735b60ca M  drivers

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

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