[BAT][CI] igt@kms_flip@' - Failed assertion: es->current_seq == es->last_seq + o->seq_step | Failed assertion: ev.sequence == last_seq + 1

Submitted by Martin Peres @mupuf

Assigned to Intel GFX Bugs mailing list

Link to original bug (#100368)

Description

The machine fi-hsw-4770 produced a fail when running igt@kms_flip@basic-flip-vs-wf_vblank on CI_DRM_2392 and has not been seen for the past 3 runs.

Relevant hunk in the piglit logs:
(kms_flip:9026) DEBUG: flip ts/seq: last 328.003934/17103, current 328.187405/17114: elapsed=183471.0us expected=183473.8us +- 917.4us, error 0.0%
(kms_flip:9026) CRITICAL: Test assertion failure function check_state, file kms_flip.c:538:
(kms_flip:9026) CRITICAL: Failed assertion: es->current_seq == es->last_seq + o->seq_step
(kms_flip:9026) CRITICAL: Last errno: 25, Inappropriate ioctl for device
(kms_flip:9026) CRITICAL: unexpected flip seq 17114, expected 17113

Raw results: https://intel-gfx-ci.01.org/CI/CI_DRM_2392/fi-hsw-4770/igt@kms_flip@basic-flip-vs-wf_vblank.html