[Bug 209673] New: divide_error in amdgpu freezes screen

[Bug 209673] New: divide_error in amdgpu freezes screen

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209673

            Bug ID: 209673
           Summary: divide_error in amdgpu freezes screen
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.8.14-arch1-1
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: cornelius.riemenschneider@googlemail.com
        Regression: No

Created attachment 292959
  --> https://bugzilla.kernel.org/attachment.cgi?id=292959&action=edit
dmesg.txt

Today, my freeze froze spontaneously while browsing the web with firefox.
I am using a Lenovo T14s with AMD Rzyen 4750U (internal GPU) with amdgpu, one
external screen connected to a USB-C docking station.
The system had an uptime of ~3 hours.

I attached the dmesg output from the time of the crash, let me know if you need
more information to debug this issue.

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[Bug 209673] divide_error in amdgpu freezes screen

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209673

--- Comment #1 from cornelius.riemenschneider@googlemail.com ---
Xorg.0.log.old (the log that should contain the output of the crashed X server)
is unfortunately empty.

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[Bug 209673] divide_error in amdgpu freezes screen

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209673

Alex Deucher (alexdeucher@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com

--- Comment #2 from Alex Deucher (alexdeucher@gmail.com) ---
Please attach your full dmesg output.  What kernel are you running?

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[Bug 209673] divide_error in amdgpu freezes screen

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209673

--- Comment #3 from cornelius.riemenschneider@googlemail.com ---
Kernel is 5.8.14-arch1-1.

I attached three dmesg outputs of the last two days, where each time the amdgpu
driver seemed to cause a divide_error, and the screen froze.
Audio playback, and in one case, video encoding (zoom call) continued working
until I reset the system via the SysRq keys.

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[Bug 209673] divide_error in amdgpu freezes screen

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209673

--- Comment #4 from cornelius.riemenschneider@googlemail.com ---
Created attachment 292995
  --> https://bugzilla.kernel.org/attachment.cgi?id=292995&action=edit
crashing dmesg #1

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[Bug 209673] divide_error in amdgpu freezes screen

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209673

--- Comment #5 from cornelius.riemenschneider@googlemail.com ---
Created attachment 292997
  --> https://bugzilla.kernel.org/attachment.cgi?id=292997&action=edit
crashing dmesg #2

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[Bug 209673] divide_error in amdgpu freezes screen

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209673

--- Comment #6 from cornelius.riemenschneider@googlemail.com ---
Created attachment 292999
  --> https://bugzilla.kernel.org/attachment.cgi?id=292999&action=edit
crashing dmesg #3

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[Bug 209673] divide_error in amdgpu freezes screen

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209673

--- Comment #7 from cornelius.riemenschneider@googlemail.com ---
Created attachment 293011
  --> https://bugzilla.kernel.org/attachment.cgi?id=293011&action=edit
crashing dmesg #4

And it crashed again.

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[Bug 209673] divide_error in amdgpu freezes screen

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209673

--- Comment #8 from cornelius.riemenschneider@googlemail.com ---
Created attachment 293035
  --> https://bugzilla.kernel.org/attachment.cgi?id=293035&action=edit
crashing dmesg #5

I compiled my own 5.9.0 kernel without any arch linux specific patches, and
just had two crashes (#5 and 6) within 10 minutes.

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[Bug 209673] divide_error in amdgpu freezes screen

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209673

--- Comment #9 from cornelius.riemenschneider@googlemail.com ---
Created attachment 293037
  --> https://bugzilla.kernel.org/attachment.cgi?id=293037&action=edit
crashing dmesg #6

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[Bug 209673] divide_error in amdgpu freezes screen

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209673

cornelius.riemenschneider@googlemail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|5.8.14-arch1-1              |5.9.0

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[Bug 209673] divide_error in amdgpu freezes screen

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209673

--- Comment #10 from cornelius.riemenschneider@googlemail.com ---
Created attachment 293057
  --> https://bugzilla.kernel.org/attachment.cgi?id=293057&action=edit
crashing dmesg #7

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