[Bug 81701] [BDW Regression]igt/gem_reset_stats some subcases cause "[drm:hsw_unclaimed_reg_detect] *ERROR* Unclaimed register detected. Please use the i915.mmio_debug=1 to debug this problem."

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81701

--- Comment #3 from Guo Jinxian <jinxianx.guo at intel.com> ---
Failure still able to reproduce on latest
-nightly(e967a525207bd40ab446e2f809907039f88e66f3) while running test
igt/drv_debugfs_reader

[root at x-bdw01 tests]# ./drv_debugfs_reader
[root at x-bdw01 tests]# dmesg -r|egrep "<[1-4]>"|grep drm
<3>[   69.154532] [drm:hsw_unclaimed_reg_detect] *ERROR* Unclaimed register
detected. Please use the i915.mmio_debug=1 to debug this problem.

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