[Bug 106773] Raven ridge, *ERROR* ring vcn_dec timeout

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106773

            Bug ID: 106773
           Summary: Raven ridge, *ERROR* ring vcn_dec timeout
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: ojab at ojab.ru

Created attachment 139954
  --> https://bugs.freedesktop.org/attachment.cgi?id=139954&action=edit
dmesg

Raven Ridge APU (2400G), no external GPU, linux-4.17-rc6, libdrm-2.4.91,
mesa-18.1.0-rc1, xorg-server-1.19.6, xf86-video-amdgpu-18.0.1, libva-2.1.0,
mpv-0.28.2.


while playing video using `mpv --vo=vaapi --hwdec=vaapi`:
[119339.517978] amdgpu 0000:08:00.0: [mmhub] VMC page fault (src_id:0 ring:174
vmid:3 pasid:32770)
[119339.517987] amdgpu 0000:08:00.0:   at page 0x0000000115730000 from 18
[119339.517991] amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x0034055D
[119339.517999] amdgpu 0000:08:00.0: [mmhub] VMC page fault (src_id:0 ring:174
vmid:3 pasid:32770)
[119339.518003] amdgpu 0000:08:00.0:   at page 0x0000000115730000 from 18
[119339.518007] amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00000000
[119339.518015] amdgpu 0000:08:00.0: [mmhub] VMC page fault (src_id:0 ring:169
vmid:0 pasid:0)
[119339.518019] amdgpu 0000:08:00.0:   at page 0x0000000000000000 from 18
[119339.518022] amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00000000
[119339.518029] amdgpu 0000:08:00.0: [mmhub] VMC page fault (src_id:0 ring:153
vmid:0 pasid:0)
[119339.518032] amdgpu 0000:08:00.0:   at page 0x0000000000000000 from 18
[119339.518035] amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00000000
[119349.744979] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring vcn_dec
timeout, last signaled seq=5760, last emitted seq=5762
[119349.744987] [drm] No hardware hang detected. Did some blocks stall?

nothing graphical except X/mpv is started. I could exit X via Ctrl+C in console
and fbdev console becomes accessible, but running X is unkillable and another X
cannot be started.

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