[Bug 212293] New: [amdgpu] divide error: 0000 on resume from S3

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=212293

            Bug ID: 212293
           Summary: [amdgpu] divide error: 0000 on resume from S3
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.11.6
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: contact at scrumplex.net
        Regression: No

Created attachment 295869
  --> https://bugzilla.kernel.org/attachment.cgi?id=295869&action=edit
kernel log since resume

My system experiences a kernel panic when resuming from S3, coming from amdgpu.
The GPU has to be in a specific state for this to happen. Mainly when my
desktop environment turns off the screens after some inactivity, and
subsequently suspends the system.

This issue only occurs with kernel versions 5.11.x. 
I could only reproduce this with KDE Plasma / KWin on Wayland, while testing
KDE Plasma / KWin on Xorg and on Wayland (Xorg seems to work fine).


REPRODUCTION
1. Start KDE Plasma / KWin on Wayland
2. Set Screen Energy Saving "Switch off after" to a low value like 1min
3. Wait until Plasma has turned off screens
4. Suspend the system (via SSH for example)
5. Try to wake from sleep


SYSTEM INFO
CPU: AMD Ryzen 9 3900X
Mainboard: ASUS ROG STRIX B450-F GAMING II
GPU: GIGABYTE Radeon RX VEGA 56 GAMING OC 8G


ATTACHMENTS
I attached the kernel panic I could capture via ttyS0.

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