[Bug 77907] New: OpenCL test 'Arithm/Absdiff.Mat/20' from OpenCV hangs HD5470M

[Bug 77907] New: OpenCL test 'Arithm/Absdiff.Mat/20' from OpenCV hangs HD5470M

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https://bugs.freedesktop.org/show_bug.cgi?id=77907

          Priority: medium
            Bug ID: 77907
          Assignee: dri-devel@lists.freedesktop.org
           Summary: OpenCL test 'Arithm/Absdiff.Mat/20' from OpenCV hangs
                    HD5470M
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: brunojimen@gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Drivers/Gallium/r600
           Product: Mesa

The effects are that when running that test, the screen freezes for a while,
then goes to black, then shows back my desktop, happening this some times.

After some debugging, the hang seems to occur with the compute shader sent to
the GPU, as the system freezes when it waits for the GPU to finish.

My system is Arch Linux with:
- AMD CEDAR 5470M
- kernel 3.14.1-1
- llvm at revision 207118
- mesa at commit 352e06d
- opencv at commit bb4199b

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[Bug 77907] OpenCL test 'Arithm/Absdiff.Mat/20' from OpenCV hangs HD5470M

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https://bugs.freedesktop.org/show_bug.cgi?id=77907

--- Comment #1 from Bruno Jiménez <brunojimen@gmail.com> ---
Created attachment 97922
  --> https://bugs.freedesktop.org/attachment.cgi?id=97922&action=edit
Here's an excerpt of dmesg from when this happens

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[Bug 77907] OpenCL test 'Arithm/Absdiff.Mat/20' from OpenCV hangs HD5470M

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https://bugs.freedesktop.org/show_bug.cgi?id=77907

--- Comment #2 from Bruno Jiménez <brunojimen@gmail.com> ---
Created attachment 97923
  --> https://bugs.freedesktop.org/attachment.cgi?id=97923&action=edit
Here's the disassembled cs I got using gdb and R600_DEBUG=cs,compute

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[Bug 77907] OpenCL test 'Arithm/Absdiff.Mat/20' from OpenCV hangs HD5470M

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=77907

--- Comment #3 from Bruno Jiménez <brunojimen@gmail.com> ---
Created attachment 97924
  --> https://bugs.freedesktop.org/attachment.cgi?id=97924&action=edit
Here's the lockup code I obtained using R600_DEBUG=trace_cs

This code does indeed hang my GPU in the same way (as far as I can see) that
the test does.

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[Bug 77907] OpenCL test 'Arithm/Absdiff.Mat/20' from OpenCV hangs HD5470M

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https://bugs.freedesktop.org/show_bug.cgi?id=77907

Vedran Miletić <vedran@miletic.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |99553


Referenced Bugs:

https://bugs.freedesktop.org/show_bug.cgi?id=99553
[Bug 99553] Tracker bug for runnning OpenCL applications on Clover
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[Bug 77907] OpenCL test 'Arithm/Absdiff.Mat/20' from OpenCV hangs HD5470M

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https://bugs.freedesktop.org/show_bug.cgi?id=77907

GitLab Migration User <gitlab-migration@fdo.invalid> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |MOVED

--- Comment #4 from GitLab Migration User <gitlab-migration@fdo.invalid> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/506.

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