igt@gem_mmap_gtt@hang - fail - Failed assertion: !control->error

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8237/shard-iclb1/igt@gem_mmap_gtt@hang.html

Starting subtest: hang
(gem_mmap_gtt:2643) WARNING: child[7] found (0, aaaaaaaa), expecting 0
(gem_mmap_gtt:2635) CRITICAL: Test assertion failure function test_hang, file ../tests/i915/gem_mmap_gtt.c:649:
(gem_mmap_gtt:2635) CRITICAL: Failed assertion: !control->error
Subtest hang failed.
**** DEBUG ****
(gem_mmap_gtt:2635) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_mmap_gtt:2635) igt_debugfs-DEBUG: Opening debugfs directory '/sys/kernel/debug/dri/0'
(gem_mmap_gtt:2635) ioctl_wrappers-DEBUG: Test requirement passed: dir >= 0
(gem_mmap_gtt:2635) ioctl_wrappers-DEBUG: Test requirement passed: err == 0
(gem_mmap_gtt:2635) i915/gem_context-DEBUG: Test requirement passed: has_ban_period || has_bannable
(gem_mmap_gtt:2635) igt_gt-DEBUG: Test requirement passed: igt_sysfs_set_parameter(fd, "reset", "%d", allow_reset)
(gem_mmap_gtt:2635) igt_gt-DEBUG: Test requirement passed: has_gpu_reset(fd)
(gem_mmap_gtt:2635) DEBUG: Test requirement passed: igt_sysfs_set_parameter(fd, "reset", "1")
(gem_mmap_gtt:2635) igt_debugfs-DEBUG: Opening debugfs directory '/sys/kernel/debug/dri/0'
(gem_mmap_gtt:2635) INFO: 73 resets
(gem_mmap_gtt:2635) CRITICAL: Test assertion failure function test_hang, file ../tests/i915/gem_mmap_gtt.c:649:
(gem_mmap_gtt:2635) CRITICAL: Failed assertion: !control->error
(gem_mmap_gtt:2635) igt_core-INFO: Stack trace:
(gem_mmap_gtt:2635) igt_core-INFO:   #0 ../lib/igt_core.c:1676 __igt_fail_assert()
(gem_mmap_gtt:2635) igt_core-INFO:   #1 ../tests/i915/gem_mmap_gtt.c:1174 __real_main1038()
(gem_mmap_gtt:2635) igt_core-INFO:   #2 ../tests/i915/gem_mmap_gtt.c:1038 main()
(gem_mmap_gtt:2635) igt_core-INFO:   #3 ../csu/libc-start.c:344 __libc_start_main()
(gem_mmap_gtt:2635) igt_core-INFO:   #4 [_start+0x2a]
****  END  ****
Subtest hang: FAIL (2.137s)