[Bug 74704] [Bisected]All Intel_gpu_tools cases fail with *ERROR* Attempting to mmap a purgeable buffer when run nightly testing

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74704

--- Comment #7 from lu hua <huax.lu at intel.com> ---
(In reply to comment #3)
> Your test runner is extremely broken if it ascribes that to all test cases.

Our testrunner can work well to correctly assign dmesg output to individual
tests as it did before. Before running every case we will clear the dmesg to
avoid older issue impact new running one.
We have do a deeper investigate to find the root cause, finally find the ERROR: 
[ 6697.667202] [drm:i915_gem_mmap_gtt] *ERROR* Attempting to mmap a purgeable
buffer
[ 6697.668469] [drm:i915_gem_object_get_pages] *ERROR* Attempting to obtain a
purgeable object
[ 6697.669782] [drm:i915_gem_object_get_pages] *ERROR* Attempting to obtain a
purgeable object
These ERROR only appeared when running the command under piglit dictory:
./piglit-print-commands.py tests/igt.py which command our testrunner using to
get the i-g-t case's running parameter.
So the reason of this issue doesn't involved by QA's testrunner.

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