https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3335/shard-glkb4/igt@drv_selftest@live_dmabuf.html [ 4280.383219] Setting dangerous option live_selftests - tainting kernel [ 4282.008781] i915: probe of 0000:00:02.0 failed with error -25 [ 4283.126588] CPU: 2 PID: 13313 Comm: kworker/2:20 Tainted: G U W 4.14.0-rc8-CI-CI_DRM_3335+ #1 [ 4283.126589] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0062.B30.1708222146 08/22/2017 [ 4283.126593] Workqueue: events output_poll_execute [ 4283.126595] Call Trace: [ 4283.126599] dump_stack+0x68/0x9f [ 4283.126602] __lock_acquire+0x19d5/0x1b00 [ 4283.126605] ? __this_cpu_preempt_check+0x13/0x20 [ 4283.126607] ? trace_hardirqs_on_caller+0xe3/0x1b0 [ 4283.126609] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 4283.126611] lock_acquire+0xb0/0x200 [ 4283.126612] ? lock_acquire+0xb0/0x200 [ 4283.126614] ? lock_hrtimer_base.isra.2+0x29/0x50 [ 4283.126617] _raw_spin_lock_irqsave+0x3d/0x60 [ 4283.126618] ? lock_hrtimer_base.isra.2+0x29/0x50 [ 4283.126620] lock_hrtimer_base.isra.2+0x29/0x50 [ 4283.126621] hrtimer_start_range_ns+0x2f/0x430 [ 4283.126623] schedule_hrtimeout_range_clock+0xca/0x150 [ 4283.126625] ? __hrtimer_run_queues+0x4d0/0x4d0 [ 4283.126626] ? usleep_range+0x45/0x80 [ 4283.126627] schedule_hrtimeout_range+0x13/0x20 [ 4283.126628] usleep_range+0x62/0x80 [ 4283.126673] intel_wait_for_register+0x104/0x140 [i915] [ 4283.126716] wait_panel_status+0x110/0x200 [i915] [ 4283.126758] edp_panel_on+0x130/0x1e0 [i915] [ 4283.126800] intel_edp_panel_on+0x26/0x50 [i915] [ 4283.126841] intel_ddi_pre_enable+0x12a/0x7e0 [i915] [ 4283.126843] ? trace_hardirqs_on+0xd/0x10 [ 4283.126886] intel_encoders_pre_enable.isra.57+0x63/0x80 [i915] [ 4283.126929] haswell_crtc_enable+0x262/0x7b0 [i915] [ 4283.126972] intel_update_crtc+0x39/0x90 [i915] [ 4283.127014] skl_update_crtcs+0x197/0x1d0 [i915] [ 4283.127056] intel_atomic_commit_tail+0x286/0xbe0 [i915] [ 4283.127098] intel_atomic_commit+0x223/0x2d0 [i915] [ 4283.127101] drm_atomic_commit+0x4b/0x50 [ 4283.127103] restore_fbdev_mode_atomic+0x190/0x1f0 [ 4283.127106] restore_fbdev_mode+0x32/0x120 [ 4283.127108] drm_fb_helper_restore_fbdev_mode_unlocked+0x50/0xa0 [ 4283.127109] drm_fb_helper_set_par+0x2d/0x60 [ 4283.127111] drm_fb_helper_hotplug_event.part.18+0x97/0xc0 [ 4283.127112] drm_fb_helper_hotplug_event+0x1c/0x30 [ 4283.127154] intel_fbdev_output_poll_changed+0x1a/0x20 [i915] [ 4283.127156] drm_kms_helper_hotplug_event+0x27/0x30 [ 4283.127157] output_poll_execute+0x99/0x190 [ 4283.127160] process_one_work+0x221/0x650 [ 4283.127162] worker_thread+0x4e/0x3c0 [ 4283.127164] kthread+0x114/0x150 [ 4283.127165] ? process_one_work+0x650/0x650 [ 4283.127166] ? kthread_create_on_node+0x40/0x40 [ 4283.127168] ret_from_fork+0x27/0x40
Another example of <7>[ 4283.126584] BUG: MAX_LOCKDEP_CHAINS too low! <7>[ 4283.126585] turning off the locking correctness validator. *** This bug has been marked as a duplicate of bug 103707 ***
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