When running igt@kms_sink_crc_basic on fi-skl-6700hq, we started getting since CI_DRM_2743 the following message:

(kms_sink_crc_basic:4036) igt-kms-WARNING: connector 48/eDP-1 has no modes
(kms_sink_crc_basic:4036) ioctl-wrappers-CRITICAL: Test assertion failure function gem_create, file ioctl_wrappers.c:591:
(kms_sink_crc_basic:4036) ioctl-wrappers-CRITICAL: Failed assertion: igt_ioctl((fd), ((((2U|1U) << (((0+8)+8)+14)) | ((('d')) << (0+8)) | (((0x40 + 0x1b)) << 0) | ((((sizeof(struct drm_i915_gem_create)))) << ((0+8)+8)))), (&create)) == 0
(kms_sink_crc_basic:4036) ioctl-wrappers-CRITICAL: Last errno: 22, Invalid argument
(kms_sink_crc_basic:4036) ioctl-wrappers-CRITICAL: error: -1 != 0
Test kms_sink_crc_basic failed.
**** DEBUG ****
(kms_sink_crc_basic:4036) igt-core-DEBUG: Test requirement passed: !igt_run_in_simulation()
(kms_sink_crc_basic:4036) drmtest-DEBUG: Test requirement passed: !(fd<0)
(kms_sink_crc_basic:4036) igt-debugfs-DEBUG: Opening debugfs directory '/sys/kernel/debug/dri/0'
(kms_sink_crc_basic:4036) drmtest-DEBUG: Test requirement passed: drmSetMaster(fd) == 0
(kms_sink_crc_basic:4036) igt-kms-DEBUG: VT: graphics mode set (mode was 0x0)
(kms_sink_crc_basic:4036) igt-kms-DEBUG: display: init {
(kms_sink_crc_basic:4036) igt-kms-DEBUG: Setting Broadcast RGB mode on connector 48 to 1
(kms_sink_crc_basic:4036) igt-kms-DEBUG: Setting Broadcast RGB mode on connector 56 to 1
(kms_sink_crc_basic:4036) igt-kms-DEBUG: display: }
(kms_sink_crc_basic:4036) igt-kms-DEBUG: display: eDP-1: set_pipe(A)
(kms_sink_crc_basic:4036) igt-kms-WARNING: connector 48/eDP-1 has no modes
(kms_sink_crc_basic:4036) igt-kms-DEBUG: Setting Broadcast RGB mode on connector 48 to 1
(kms_sink_crc_basic:4036) igt-kms-DEBUG: display: eDP-1: Selecting pipe A
(kms_sink_crc_basic:4036) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=0, height=0, format=0x34325258, tiling=0x100000000000001, size=0)
(kms_sink_crc_basic:4036) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_sink_crc_basic:4036) ioctl-wrappers-CRITICAL: Test assertion failure function gem_create, file ioctl_wrappers.c:591:
(kms_sink_crc_basic:4036) ioctl-wrappers-CRITICAL: Failed assertion: igt_ioctl((fd), ((((2U|1U) << (((0+8)+8)+14)) | ((('d')) << (0+8)) | (((0x40 + 0x1b)) << 0) | ((((sizeof(struct drm_i915_gem_create)))) << ((0+8)+8)))), (&create)) == 0
(kms_sink_crc_basic:4036) ioctl-wrappers-CRITICAL: Last errno: 22, Invalid argument
(kms_sink_crc_basic:4036) ioctl-wrappers-CRITICAL: error: -1 != 0
****  END  ****

Full logs: https://intel-gfx-ci.01.org/CI/CI_DRM_2743/fi-skl-6700hq/igt@kms_sink_crc_basic.html