Amdgpu error, XFCE frozen, where to report?

I was seeking in VLC player, and the interface frozen and after Ctrl+Alt+F5 i see following errors being added to the terminal:

[drm:amdgpu_cs_ioctl] [amdgpu]] *ERROR* Failed to initialize parser -125!

Alt+F7 still seeing XFCE frozen. I do not remember kernel used (5.11 or 5.12 or 5.13). I do not wish to share video file.
Do you have idea where to report this and which commands to run to provide details? The command prompt was spoiled by the mentioned errors and after reboot i am not sure where to look and what to search.

4.6 Mesa 21.1.4
Xfce 4.16.0 tk: Gtk 3.24.29 info: xfce4-panel wm: xfwm 4.16.1 vt: 7
dm: LightDM 1.30.0 Distro: Manjaro Linux base: Arch Linux