[Bug 107164] [CI][GDG] igt at drv_selftest@live_coherency igt_gem_coherency failed with error -22

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107164

James Ausmus <james.ausmus at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|FIXED                       |---
             Status|RESOLVED                    |REOPENED

--- Comment #2 from James Ausmus <james.ausmus at intel.com> ---
It looks like this issue is still happening sporadically on CI - last failure
was on July 16th -
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_4499/fi-gdg-551/igt@drv_selftest@live_coherency.html

dmesg: 

[  525.761393] Setting dangerous option live_selftests - tainting kernel
[  526.007603] Value[14/23] mismatch, (overwrite with gtt) wrote [cpu] 75bc439e
read [gtt] 8a43bc61 (inverse 8a43bc61), at offset 598
[  526.011501] i915/i915_gem_coherency_live_selftests: igt_gem_coherency failed
with error -22
[  526.058075] i915: probe of 0000:00:02.0 failed with error -22


12 out of the last 60 CI runs had this failure signature, so around a 20%
failure rate currently

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