When running igt@kms_pipe_crc_basic@nonblocking-crc-pipe-b on CI_DRM_2604, the machine fi-elk-e7500 generated the following warning: [ 389.934004] ------------[ cut here ]------------ [ 389.934004] WARNING: CPU: 0 PID: 0 at drivers/gpu/drm/drm_irq.c:780 drm_calc_vbltimestamp_from_scanoutpos+0x16e/0x310 [ 389.934004] Modules linked in: vgem i915 snd_hda_codec_realtek snd_hda_codec_generic coretemp snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm lpc_ich e1000e ptp prime_numbers mei_me pps_core mei [ 389.934004] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G U W 4.11.0-CI-CI_DRM_2604+ #1 [ 389.934004] Hardware name: Hewlett-Packard HP Compaq 8000 Elite CMT PC/3647h, BIOS 786G7 v01.02 10/22/2009 [ 389.934004] Call Trace: [ 389.934004] <IRQ> [ 389.934004] dump_stack+0x67/0x92 [ 389.934004] __warn+0xc6/0xe0 [ 389.934004] warn_slowpath_null+0x18/0x20 [ 389.934004] drm_calc_vbltimestamp_from_scanoutpos+0x16e/0x310 [ 389.934004] ? gen2_read32+0x73/0x200 [i915] [ 389.934004] drm_get_last_vbltimestamp+0x3a/0x60 [ 389.934004] drm_update_vblank_count+0x62/0x290 [ 389.934004] drm_accurate_vblank_count+0x3f/0x80 [ 389.934004] display_pipe_crc_irq_handler+0x16d/0x210 [i915] [ 389.934004] i9xx_pipe_crc_irq_handler+0xda/0x160 [i915] [ 389.934004] i965_irq_handler+0x20a/0x2f0 [i915] [ 389.934004] __handle_irq_event_percpu+0x58/0x370 [ 389.934004] handle_irq_event_percpu+0x1e/0x50 [ 389.934004] handle_irq_event+0x34/0x60 [ 389.934004] handle_edge_irq+0xbe/0x150 [ 389.934004] handle_irq+0x15/0x20 [ 389.934004] do_IRQ+0x63/0x130 [ 389.934004] common_interrupt+0x90/0x90 [ 389.934004] RIP: 0010:cpuidle_enter_state+0x135/0x380 [ 389.934004] RSP: 0018:ffffffff81e03de8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffac [ 389.934004] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 389.934004] RDX: 0000005ac9dfc3da RSI: ffffffff81c7891d RDI: ffffffff81706b31 [ 389.934004] RBP: ffffffff81e03e20 R08: ffff88011bc170c4 R09: 0000000000000007 [ 389.934004] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 389.934004] R13: ffff8801151dda88 R14: ffffffff81ec9f58 R15: 0000005ac9dfc3da [ 389.934004] </IRQ> [ 389.934004] ? cpuidle_enter_state+0x131/0x380 [ 389.934004] ? cpuidle_enter_state+0x131/0x380 [ 389.934004] cpuidle_enter+0x12/0x20 [ 389.934004] call_cpuidle+0x1e/0x40 [ 389.934004] do_idle+0x17e/0x1f0 [ 389.934004] cpu_startup_entry+0x18/0x20 [ 389.934004] rest_init+0x127/0x130 [ 389.934004] start_kernel+0x3f1/0x3fe [ 389.934004] x86_64_start_reservations+0x2a/0x2c [ 389.934004] x86_64_start_kernel+0x173/0x186 [ 389.934004] start_cpu+0x14/0x14 [ 389.934004] ? start_cpu+0x14/0x14 [ 389.934004] ---[ end trace 10eb07f9d4184c48 ]--- Full logs: https://intel-gfx-ci.01.org/CI/CI_DRM_2604/fi-elk-e7500/igt@kms_pipe_crc_basic@nonblocking-crc-pipe-b.html
Could be useful to have a more elaborate dmesg. Same thing with drm.debug=0x1f ?
Last seen: 2017-05-11 Statistics: Failure rate 4/76 run(s) (5%)
Updating statistics: Last seen on igt@kms_pipe_crc_basic@nonblocking-crc-pipe-b (dmesg-warn): 2017-05-11 Statistics: Failure rate 4/101 run(s) (3%) Last seen on igt@kms_pipe_crc_basic@nonblocking-crc-pipe-a (dmesg-fail): 2017-05-04 Statistics: Failure rate 1/101 run(s) (0%) Do we still consider this as issue?
https://intel-gfx-ci.01.org/CI/fi-elk-e7500.html Haven't seen this for a while. Can reopen if happens again.
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