[Bug 91298] [BDW] piglit at spec@arb_shader_atomic_counters at unused-result intermittent failures

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91298

--- Comment #4 from Kenneth Graunke <kenneth at whitecape.org> ---
It definitely seems to be some kind of race - adding usleep(1000) in the test
inbetween glMapBufferRange and the p[i] access effectively hides the problem.

It also works fine on Haswell - I've run it for a few hours with no failures.

INTEL_DEBUG=sync doesn't help.  always_flush_batch=true seems to make it fail a
little more often...it at minimum doesn't help...

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