[Bug 94331] New: Random panic with radeon

[Bug 94331] New: Random panic with radeon

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=94331

            Bug ID: 94331
           Summary: Random panic with radeon
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.0.0-rc1-00151-ga38ecbb
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: sulamiification@gmail.com
        Regression: No

Created attachment 169221
  --> https://bugzilla.kernel.org/attachment.cgi?id=169221&action=edit
Kernel log

Yesterday my 4.0.0-rc1 randomly panicked. Because of the panic messsage I am
assuming it is at least related to radeon.

Hardware:
- Intel Xeon E3-1245v3
- AMD Radeon HD7970
- ASRock B85M Pro4

Software:
- Mainline Kernel built on Monday (4.0.0-rc1-00151-ga38ecbb)
- radeon driver

The panic happened after about one day of uptime, I was running cwm + compton,
an OpenBSD VM in qemu/kvm without graphics in the background and a HTML5
YouTube video in Firefox.

I added the log up until then as an attachment, but I cannot find anything
suspicious. The "wm" segfault is my fault, I am working on a Wayland
compositor. The bridge mess as well.

I made a photo of the panic for later examination, which can be found here:

https://i.imgur.com/I7xBwWD.jpg

So far I have not been able to reproduce this issue.

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[Bug 94331] Random panic with radeon

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=94331

--- Comment #1 from Michel Dänzer <michel@daenzer.net> ---
(In reply to sulamiification from comment #0)
> Because of the panic messsage I am assuming it is at least related to radeon.

Why is that? If you mean because of 'drm_kms_helper', that message appears
regardless of what causes the panic.

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[Bug 94331] Random panic with radeon

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=94331

--- Comment #2 from sulamiification@gmail.com ---
(In reply to Michel Dänzer from comment #1)
> (In reply to sulamiification from comment #0)
> > Because of the panic messsage I am assuming it is at least related to radeon.
> 
> Why is that? If you mean because of 'drm_kms_helper', that message appears
> regardless of what causes the panic.

To be honest, it is just my best bet, "Compositor" also plays a role in that.
If there is any way to find out what actually happened to cause this page fault
I would be happy to help out in any way I can.

I am also puzzled by the "<<EOE>> <UNK>" block, what does it say?

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