On CI_DRM_2990 and CI_DRM_2991, the sharded SNB machines timed out on vblank wait when running igt@kms_flip@flip-vs-panning-vs-hang: [ 47.825142] pipe B vblank wait timed out [ 47.825171] ------------[ cut here ]------------ [ 47.825203] WARNING: CPU: 2 PID: 152 at drivers/gpu/drm/i915/intel_display.c:12152 intel_atomic_commit_tail+0xedd/0xf00 [i915] [ 47.825206] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic i915 x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core broadcom bcm_phy_lib tg3 snd_pcm ptp pps_core mei_me lpc_ich mei prime_numbers [ 47.825247] CPU: 2 PID: 152 Comm: kworker/u16:6 Not tainted 4.13.0-rc6-CI-CI_DRM_2991+ #1 [ 47.825248] Hardware name: Dell Inc. XPS 8300 /0Y2MRG, BIOS A06 10/17/2011 [ 47.825269] Workqueue: events_unbound intel_atomic_commit_work [i915] [ 47.825273] task: ffff88022385cfc0 task.stack: ffffc90000bb0000 [ 47.825293] RIP: 0010:intel_atomic_commit_tail+0xedd/0xf00 [i915] [ 47.825294] RSP: 0018:ffffc90000bb3d78 EFLAGS: 00010296 [ 47.825298] RAX: 000000000000001c RBX: 0000000000000001 RCX: 0000000000000001 [ 47.825300] RDX: 0000000080000001 RSI: ffffffff81d01e57 RDI: 00000000ffffffff [ 47.825301] RBP: ffffc90000bb3e20 R08: ffff88022385d8b0 R09: 0000000000000000 [ 47.825303] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88021a520000 [ 47.825305] R13: 0000000000000218 R14: 0000000000000004 R15: 0000000000000002 [ 47.825307] FS: 0000000000000000(0000) GS:ffff88022fa80000(0000) knlGS:0000000000000000 [ 47.825309] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.825310] CR2: 000055d8a7e081d8 CR3: 0000000001e0f000 CR4: 00000000000406e0 [ 47.825312] Call Trace: [ 47.825317] ? trace_hardirqs_off_caller+0x96/0xe0 [ 47.825321] ? wait_woken+0x90/0x90 [ 47.825342] intel_atomic_commit_work+0x12/0x20 [i915] [ 47.825345] process_one_work+0x224/0x650 [ 47.825350] worker_thread+0x4e/0x3b0 [ 47.825354] kthread+0x114/0x150 [ 47.825356] ? process_one_work+0x650/0x650 [ 47.825358] ? kthread_create_on_node+0x40/0x40 [ 47.825362] ret_from_fork+0x27/0x40 [ 47.825367] Code: ff ff ff 48 83 c7 08 e8 72 51 ed e0 4c 8b 85 78 ff ff ff 4d 85 c0 0f 85 d3 fd ff ff 8d 73 41 48 c7 c7 c0 9a 2a a0 e8 24 97 ef e0 <0f> ff e9 bd fd ff ff 8d 70 41 48 c7 c7 90 9a 2a a0 e8 0e 97 ef [ 47.825460] ---[ end trace 34b8b125081ed49e ]--- [ 59.832874] i915 0000:00:02.0: Resetting chip after gpu hang Full logs: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_2991/shard-snb1/igt@kms_flip@flip-vs-panning-vs-hang.html
Also seen on igt@kms_flip@flip-vs-panning-vs-hang-interruptible: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3006/shard-snb6/igt@kms_flip@flip-vs-panning-vs-hang-interruptible.html
The warn is reproduced on CI_DRM_3159 fi-elk-e7500 https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3159/fi-elk-e7500/igt@kms_pipe_crc_basic@nonblocking-crc-pipe-a.html Then this state leads to incomplete on the ELK for the next test: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3159/fi-elk-e7500/igt@kms_pipe_crc_basic@nonblocking-crc-pipe-a-frame-sequence.html
Never seen again. Closing
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