https://intel-gfx-ci.01.org/CI/Patchwork_4422/fi-hsw-4770/igt@gem_exec_fence@nb-await-default.html
https://patchwork.freedesktop.org/patch/150230/
*** Bug 100653 has been marked as a duplicate of this bug. ***
*** Bug 100561 has been marked as a duplicate of this bug. ***
*** Bug 99726 has been marked as a duplicate of this bug. ***
Marked known issue on CI
commit 3396a273851c14634b98bb27be37508b06df94f4 Author: Mika Kuoppala <mika.kuoppala@linux.intel.com> Date: Thu Apr 13 14:15:27 2017 +0300 drm/i915: Fix system hang with EI UP masked on Haswell
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