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[REGRESSION][BISECTED] After suspend graphics hangs with a `Fence fallback timer expired` spam

Brief summary of the problem:

After waking up from suspend running any graphics app with DRI_PRIME=1 (e.g. DRI_PRIME=1 glxinfo) results in the app being very slow and the journalctl -f spams:

янв 03 14:28:56 constantine-N61Ja kernel: [drm] Fence fallback timer expired on ring gfx
янв 03 14:28:56 constantine-N61Ja kernel: [drm] Fence fallback timer expired on ring comp_1.0.0
янв 03 14:28:57 constantine-N61Ja kernel: [drm] Fence fallback timer expired on ring comp_1.0.1
янв 03 14:28:57 constantine-N61Ja kernel: [drm] Fence fallback timer expired on ring comp_1.0.2
янв 03 14:28:58 constantine-N61Ja kernel: [drm] Fence fallback timer expired on ring comp_1.0.3
янв 03 14:28:58 constantine-N61Ja kernel: [drm] Fence fallback timer expired on ring comp_1.0.4
янв 03 14:28:59 constantine-N61Ja kernel: [drm] Fence fallback timer expired on ring comp_1.0.5
янв 03 14:28:59 constantine-N61Ja kernel: [drm] Fence fallback timer expired on ring comp_1.0.6
янв 03 14:29:00 constantine-N61Ja kernel: [drm] Fence fallback timer expired on ring comp_1.0.7
янв 03 14:29:00 constantine-N61Ja kernel: [drm] Fence fallback timer expired on ring sdma0
янв 03 14:29:01 constantine-N61Ja kernel: [drm] Fence fallback timer expired on ring sdma1

This problem first appears on 5.14 version

Hardware description:

  • CPU: Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz
  • GPU: 01:00.0 Display controller [0380]: Advanced Micro Devices, Inc. [AMD/ATI] Topaz XT [Radeon R7 M260/M265 / M340/M360 / M440/M445 / 530/535 / 620/625 Mobile] [10... (rev c3)
  • System Memory: 8G
  • Display(s): built-in laptop screen
  • Type of Display Connection: eDP

System information:

  • Distro name and Version: Archlinux
  • Kernel version: Linux constantine-N61Ja 5.15.12-arch1-1 #1 SMP PREEMPT Wed, 29 Dec 2021 12:04:56 +0000 x86_64 GNU/Linux
  • Custom kernel: no
  • AMD official driver version: modinfo amdgpu says 5.15.12

How to reproduce the issue:

  1. Execute systemctl suspend
  2. Wakeup the computer and run DRI_PRIME=1 glxinfo

Expected

It returns immediately and there's no spam about Fence fallback timer expired

Actual

There's the spam, and the app is slow to return

Attached files:

Log files (for system lockups / game freezes / crashes)

Edited by Konstantin Kharlamov