[Bug 91718] piglit.spec.arb_shader_image_load_store.invalid causes intermittent GPU HANG

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91718

            Bug ID: 91718
           Summary: piglit.spec.arb_shader_image_load_store.invalid causes
                    intermittent GPU HANG
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: mark.a.janes at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Created attachment 117842
  --> https://bugs.freedesktop.org/attachment.cgi?id=117842&action=edit
reproduces gpu hang with image_load_store tests

Mesa's CI system has been encountering intermittent GPU HANGS since the
introduction of arb_image_load_store

I was able to reproduce this easily on IVB by repeatedly running
image_load_store tests and watching syslog.  It may also occur on snb, bsw, and
bdw, because those systems have encountered a similar increase in gpu hangs.

I've attached the trivial shell script I used to reproduce it.

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