[Bug 102177] [SKL] ES31-CTS.core.sepshaderobjs.StateInteraction fails sporadically

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102177

            Bug ID: 102177
           Summary: [SKL] ES31-CTS.core.sepshaderobjs.StateInteraction
                    fails sporadically
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: scott.d.phillips at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Bisected to:

commit 3fe8d04a6d69fad98228be647ba9b250ea0e3a8b
Author: Timothy Arceri <timothy.arceri at collabora.com>
Date:   Mon Jan 9 16:13:27 2017 +1100

    mesa: don't always set _NEW_PROGRAM when linking

    We only need to set it when linking was successful and the program
    being linked is currently active.

    The programs_in_use mask is just used as a flag for now but in
    a future change we will use it to update the CurrentProgram array.

    V2: make sure to flush vertices before linking (suggested by Marek)

    Reviewed-by: Marek Olšák <marek.olsak at amd.com>

Fails infrequently, seems to be ~0.6% of executions on my system. Doing what
naively looks to me like a revert on master doesn't fix it, although lots has
changed around that code since then.

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