igt@gem_mmap_gtt@cpuset-medium-copy-od| igt@kms_cursor_crc@pipe-c-cursor-128x42-random - dmesg-warn - INFO: task systemd-udevd:\d+ blocked for more than \d+ seconds.
<3> [124.217003] INFO: task systemd-udevd:325 blocked for more than 61 seconds.
<3> [124.217014] Tainted: G U W 5.5.0-rc6-gf65c394056d8-drmtip_422+ #1
<3> [124.217020] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
<6> [124.217028] systemd-udevd D12376 325 290 0x80004100
<4> [124.217044] Call Trace:
<4> [124.217065] ? __schedule+0x2e5/0x800
<4> [124.217081] schedule+0x37/0xe0
<4> [124.217088] schedule_preempt_disabled+0xf/0x20
<4> [124.217095] __mutex_lock+0x281/0x9c0
<4> [124.217104] ? free_object+0x5/0x40
<4> [124.217111] ? schedule_timeout+0x1e3/0x3f0
<4> [124.217134] ? generic_hdmi_init+0x2e/0x160 [snd_hda_codec_hdmi]
<4> [124.217158] ? generic_hdmi_init+0x2e/0x160 [snd_hda_codec_hdmi]
<4> [124.217177] ? snd_hdac_sync_power_state+0x76/0x90 [snd_hda_core]
<4> [124.217191] generic_hdmi_init+0x2e/0x160 [snd_hda_codec_hdmi]
<4> [124.217211] generic_hdmi_resume+0x18/0x50 [snd_hda_codec_hdmi]
<4> [124.217230] hda_call_codec_resume+0x5e/0x120 [snd_hda_codec]
<4> [124.217250] snd_hda_bus_reset_codecs+0x28/0x70 [snd_hda_codec]
<4> [124.217267] snd_hda_bus_reset+0x2e/0x40 [snd_hda_codec]
<4> [124.217281] codec_exec_verb+0xdd/0x100 [snd_hda_codec]
<4> [124.217298] hda_reg_read+0x88/0x220 [snd_hda_core]
<4> [124.217315] reg_raw_read+0x4d/0x70 [snd_hda_core]
<4> [124.217329] __snd_hdac_regmap_read_raw+0x1b/0x70 [snd_hda_core]
<4> [124.217344] snd_hdac_read_parm_uncached+0x29/0x60 [snd_hda_core]
<4> [124.217357] ? codec_exec_verb+0x9c/0x100 [snd_hda_codec]
<4> [124.217370] snd_hda_get_num_devices+0x5d/0x70 [snd_hda_codec]
<4> [124.217385] snd_hda_set_dev_select+0x20/0x60 [snd_hda_codec]
<4> [124.217398] generic_hdmi_init+0x8b/0x160 [snd_hda_codec_hdmi]
<4> [124.217417] snd_hda_codec_build_controls+0x32/0x200 [snd_hda_codec]
<4> [124.217433] hda_codec_driver_probe+0xf9/0x140 [snd_hda_codec]
<4> [124.217443] ? driver_sysfs_add+0x66/0x90
<4> [124.217452] really_probe+0xea/0x420
<4> [124.217463] driver_probe_device+0x10b/0x120
<4> [124.217472] device_driver_attach+0x4a/0x50
<4> [124.217482] __driver_attach+0x97/0x130
<4> [124.217491] ? device_driver_attach+0x50/0x50
<4> [124.217499] bus_for_each_dev+0x74/0xc0
<4> [124.217509] bus_add_driver+0x142/0x220
<4> [124.217517] ? 0xffffffffc0152000
<4> [124.217525] driver_register+0x56/0xf0
<4> [124.217532] ? 0xffffffffc0152000
<4> [124.217539] do_one_initcall+0x58/0x300
<4> [124.217548] ? rcu_read_lock_sched_held+0x4d/0x80
<4> [124.217558] ? kmem_cache_alloc_trace+0x290/0x2c0
<4> [124.217569] do_init_module+0x56/0x1f2
<4> [124.217577] load_module+0x243e/0x29f0
<4> [124.217602] ? __do_sys_finit_module+0xe9/0x110
<4> [124.217609] __do_sys_finit_module+0xe9/0x110
<4> [124.217626] do_syscall_64+0x4f/0x240
<4> [124.217635] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [124.217642] RIP: 0033:0x7f8f4c120839
````
https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_421/fi-skl-6700k2/igt@gem_mmap_gtt@cpuset-medium-copy-odd.html#dmesg-warnings31
<3> [124.216985] INFO: task systemd-udevd:318 blocked for more than 61 seconds. <3> [124.217014] Tainted: G U W 5.5.0-rc6-gcef3a815e760-drmtip_421+ #1 (moved) <3> [124.217040] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. <6> [124.217067] systemd-udevd D12392 318 289 0x80004100 <4> [124.217093] Call Trace: <4> [124.217115] ? __schedule+0x2e5/0x800 <4> [124.217137] schedule+0x37/0xe0 <4> [124.217153] schedule_preempt_disabled+0xf/0x20 <4> [124.217171] __mutex_lock+0x281/0x9c0 <4> [124.217201] ? reg_raw_read+0x25/0x70 [snd_hda_core] <4> [124.217233] ? reg_raw_read+0x25/0x70 [snd_hda_core] <4> [124.217258] reg_raw_read+0x25/0x70 [snd_hda_core] <4> [124.217287] __snd_hdac_regmap_read_raw+0x1b/0x70 [snd_hda_core] <4> [124.217317] snd_hdac_read_parm_uncached+0x29/0x60 [snd_hda_core] <4> [124.217350] snd_hda_get_num_devices+0x5d/0x70 [snd_hda_codec] <4> [124.217380] snd_hda_set_dev_select+0x20/0x60 [snd_hda_codec] <4> [124.217421] generic_hdmi_init+0x8b/0x160 [snd_hda_codec_hdmi] <4> [124.217454] generic_hdmi_resume+0x18/0x50 [snd_hda_codec_hdmi] <4> [124.217488] hda_call_codec_resume+0x5e/0x120 [snd_hda_codec] <4> [124.217519] snd_hda_bus_reset_codecs+0x28/0x70 [snd_hda_codec] <4> [124.217552] snd_hda_bus_reset+0x2e/0x40 [snd_hda_codec] <4> [124.217581] codec_exec_verb+0xdd/0x100 [snd_hda_codec] <4> [124.217611] hda_reg_read+0x88/0x220 [snd_hda_core] <4> [124.217640] reg_raw_read+0x4d/0x70 [snd_hda_core] <4> [124.217667] __snd_hdac_regmap_read_raw+0x1b/0x70 [snd_hda_core] <4> [124.217696] snd_hdac_read_parm_uncached+0x29/0x60 [snd_hda_core] <4> [124.217726] snd_hda_get_num_devices+0x5d/0x70 [snd_hda_codec] <4> [124.217755] snd_hda_set_dev_select+0x20/0x60 [snd_hda_codec] <4> [124.217785] hdmi_parse_codec+0x23a/0x3e0 [snd_hda_codec_hdmi] <4> [124.217818] parse_intel_hdmi+0xd/0xb0 [snd_hda_codec_hdmi] <4> [124.217847] hda_codec_driver_probe+0x85/0x140 [snd_hda_codec] <4> [124.217872] ? driver_sysfs_add+0x66/0x90 <4> [124.217891] really_probe+0xea/0x420 <4> [124.217912] driver_probe_device+0x10b/0x120 <4> [124.217963] device_driver_attach+0x4a/0x50 <4> [124.217984] __driver_attach+0x97/0x130 <4> [124.218004] ? device_driver_attach+0x50/0x50 <4> [124.218030] bus_for_each_dev+0x74/0xc0 <4> [124.218057] bus_add_driver+0x142/0x220 <4> [124.218080] ? 0xffffffffc02e4000 <4> [124.218100] driver_register+0x56/0xf0 <4> [124.218117] ? 0xffffffffc02e4000 <4> [124.218133] do_one_initcall+0x58/0x300 <4> [124.218152] ? rcu_read_lock_sched_held+0x4d/0x80 <4> [124.218174] ? kmem_cache_alloc_trace+0x290/0x2c0 <4> [124.218197] do_init_module+0x56/0x1f2 <4> [124.218216] load_module+0x243e/0x29f0 <4> [124.218251] ? __do_sys_finit_module+0xe9/0x110 <4> [124.218273] __do_sys_finit_module+0xe9/0x110 <4> [124.218303] do_syscall_64+0x4f/0x240 <4> [124.218323] entry_SYSCALL_64_after_hwframe+0x49/0xbe <4> [124.218343] RIP: 0033:0x7fdbe2f25839