[Bug 91827] gsraytrace fails with Input/Output error intel_do_flush_locked

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91827

            Bug ID: 91827
           Summary: gsraytrace fails with Input/Output error
                    intel_do_flush_locked
           Product: Mesa
           Version: 11.0
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: jonas at wielicki.name
        QA Contact: intel-3d-bugs at lists.freedesktop.org

The gsraytrace demo from mesademos 8.2 fails with the following output on
mesa-11.0.0-rc2 on Intel Sandybridge:

    $ LD_LIBRARY_PATH=/usr/local/lib /usr/lib64/mesa/gsraytrace      
    GL_RENDERER = Mesa DRI Intel(R) Sandybridge Mobile 

    ESC                 = exit demo
    left mouse + drag   = rotate camera

    intel_do_flush_locked failed: Input/output error
    intel_do_flush_locked failed: Input/output error

No special input is required, the demo crashes right away. The same also
happens with the system mesa which is at version 10.6.3.

intel GPU:
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09)

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