This appears to be a regression.

Also seen on SKL: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_5226/shard-skl7/igt@kms_draw_crc@draw-method-xrgb8888-pwrite-ytiled.html

Starting subtest: draw-method-xrgb8888-pwrite-ytiled
(kms_draw_crc:2334) igt_debugfs-CRITICAL: Test assertion failure function igt_assert_crc_equal, file ../lib/igt_debugfs.c:419:
(kms_draw_crc:2334) igt_debugfs-CRITICAL: Failed assertion: !mismatch
Subtest draw-method-xrgb8888-pwrite-ytiled failed.

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_152/fi-kbl-r/igt@kms_draw_crc@draw-method-xrgb8888-pwrite-ytiled.html

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_153/fi-kbl-r/igt@kms_draw_crc@draw-method-xrgb8888-pwrite-ytiled.html

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_153/fi-whl-u/igt@kms_draw_crc@draw-method-xrgb8888-pwrite-ytiled.html

Starting subtest: draw-method-xrgb8888-pwrite-ytiled
(kms_draw_crc:2322) igt_debugfs-CRITICAL: Test assertion failure function igt_assert_crc_equal, file ../lib/igt_debugfs.c:419:
(kms_draw_crc:2322) igt_debugfs-CRITICAL: Failed assertion: !mismatch
Subtest draw-method-xrgb8888-pwrite-ytiled failed.

This test fails one a number of SKL, KBL, WHL and GLK machines 4-5 times a month. When it fails it happens within a few runs/days of the first failure for that month.

The issue is also observed on ICL-U. The CI-buglog filter for this issue should be updated for that.

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/drm/intel/issues/169.