[Bug 105819] Window system hang due to GPU Fault

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105819

            Bug ID: 105819
           Summary: Window system hang due to GPU Fault
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: hjpriester at gmail.com

Created attachment 138449
  --> https://bugs.freedesktop.org/attachment.cgi?id=138449&action=edit
dmesg output with the GPU fault.

When displaying a "png" with Image magick display the system quite often hangs.
Screen is not updated, X can not be terminated.

In dmesg I got this error:

[ 1338.134608] amdgpu 0000:20:00.0: GPU fault detected: 147 0x03684402
[ 1338.134611] amdgpu 0000:20:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR  
0x0050
306D
[ 1338.134614] amdgpu 0000:20:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS
0x0C04
4002
[ 1338.134618] amdgpu 0000:20:00.0: VM fault (0x02, vmid 6, pasid 32773) at
page
 5255277, read from 'TC1' (0x54433100) (68)
[ 1348.576412] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout,
last
 signaled seq=20984, last emitted seq=20986
[ 1348.576423] [drm] IP block:gfx_v8_0 is hung!
[ 1348.576472] [drm] GPU recovery disabled.

I could login using ssh but could not kill X. 

I was using the "drm-next-4.17wip" from 29/03/2018 but the problem also happens
with 4.15.X
Full dmesg is attached.

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