[Bug 105317] The GPU Vega 56 was hang while try to pass #GraphicsFuzz shader15 test

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105317

            Bug ID: 105317
           Summary: The GPU Vega 56 was hang while try to pass
                    #GraphicsFuzz shader15 test
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: mikhail.v.gavrilov at gmail.com

Preparing:

1. install Fedora 27.
https://download.fedoraproject.org/pub/fedora/linux/releases/27/Workstation/x86_64/iso/Fedora-Workstation-Live-x86_64-27-1.6.iso
2. install latest MESA and LLVM
https://copr.fedorainfracloud.org/coprs/che/mesa/
3. build and install staging kernel with latest amdgpu driver
$ git clone git://people.freedesktop.org/~agd5f/linux --branch
amd-staging-drm-next
$ cd linux
$ make clean && make bzImage && make module
# make modules_install && make install

Reproducing issue:
1. Launch any browser (I checked on Firefox and Opera)
2. Open http://www.graphicsfuzz.com/benchmark/android-v1.html
3. Press Go
4. Wait when reached shader15 test


Symptoms:
1. The system stop to respod.
2. All the LEDs on the video card showing the load start to glow.
3. The turbine on the video card starts to make a lot of noise.

In dmesg appears follow lines:
[drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout, last signaled
seq=71473, last emitted seq=71475
[drm] No hardware hang detected. Did some blocks stall?


If you are used Opera browser before would be added follow lines:
[drm:gfx_v9_0_priv_reg_irq [amdgpu]] *ERROR* Illegal register access in command
stream
[drm] No hardware hang detected. Did some blocks stall?

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