https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_30/fi-bsw-n3050/igt@pm_rpm@system-suspend.html

<3>[  123.872546] INFO: task modprobe:244 blocked for more than 60 seconds.
<3>[  123.872583]       Tainted: G     U  W         4.17.0-rc3-g844dd95837ab-drmtip_30+ #1
<3>[  123.872605] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
<6>[  123.872628] modprobe        D12376   244     87 0x80000000
<4>[  123.872675] Call Trace:
<4>[  123.872730]  ? __schedule+0x349/0xbe0
<4>[  123.872781]  schedule+0x2d/0x90
<4>[  123.872808]  schedule_timeout+0x9a/0x540
<4>[  123.872850]  ? collect_expired_timers+0xa0/0xa0
<4>[  123.872888]  ? msleep+0x13/0x40
<4>[  123.872924]  msleep+0x33/0x40
<4>[  123.872987]  alc283_init+0xf1/0x120 [snd_hda_codec_realtek]
<4>[  123.873172]  alc_init+0x1f/0x590 [snd_hda_codec_realtek]
<4>[  123.873243]  snd_hda_codec_build_controls+0x32/0x200 [snd_hda_codec]
<4>[  123.873310]  hda_codec_driver_probe+0xc1/0x100 [snd_hda_codec]
<4>[  123.873351]  driver_probe_device+0x306/0x480
<4>[  123.873388]  __driver_attach+0xb7/0xe0
<4>[  123.873415]  ? driver_probe_device+0x480/0x480
<4>[  123.873443]  ? driver_probe_device+0x480/0x480
<4>[  123.873473]  bus_for_each_dev+0x74/0xc0
<4>[  123.873512]  bus_add_driver+0x15f/0x250
<4>[  123.873552]  ? 0xffffffffc040a000
<4>[  123.873601]  driver_register+0x52/0xc0
<4>[  123.873641]  ? 0xffffffffc040a000
<4>[  123.873686]  do_one_initcall+0x58/0x370
<4>[  123.873742]  ? do_init_module+0x1d/0x1ea
<4>[  123.873791]  ? rcu_read_lock_sched_held+0x6f/0x80
<4>[  123.873836]  ? kmem_cache_alloc_trace+0x282/0x2e0
<4>[  123.873884]  do_init_module+0x56/0x1ea
<4>[  123.873917]  load_module+0x2435/0x2b20
<4>[  123.874085]  ? __se_sys_finit_module+0xd3/0xf0
<4>[  123.874119]  __se_sys_finit_module+0xd3/0xf0
<4>[  123.874184]  do_syscall_64+0x55/0x190
<4>[  123.874217]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4>[  123.874243] RIP: 0033:0x7f9ac4ad3839
<4>[  123.874264] RSP: 002b:00007ffe07b4ef28 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
<4>[  123.874296] RAX: ffffffffffffffda RBX: 000055fd08177aa0 RCX: 00007f9ac4ad3839
<4>[  123.874317] RDX: 0000000000000000 RSI: 000055fd07f66c2e RDI: 0000000000000001
<4>[  123.874338] RBP: 000055fd07f66c2e R08: 0000000000000000 R09: 0000000000000001
<4>[  123.874371] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
<4>[  123.874414] R13: 000055fd08170350 R14: 0000000000040000 R15: 000055fd08177aa0
<4>[  123.874485] INFO: lockdep is turned off.
<4>[  123.874508] NMI backtrace for cpu 0
<4>[  123.874535] CPU: 0 PID: 26 Comm: khungtaskd Tainted: G     U  W         4.17.0-rc3-g844dd95837ab-drmtip_30+ #1
<4>[  123.874557] Hardware name:  /NUC5CPYB, BIOS PYBSWCEL.86A.0058.2016.1102.1842 11/02/2016
<4>[  123.874575] Call Trace:
<4>[  123.874609]  dump_stack+0x67/0x9b
<4>[  123.874643]  nmi_cpu_backtrace+0xb4/0xc0
<4>[  123.874675]  ? lapic_can_unplug_cpu+0x90/0x90
<4>[  123.874729]  nmi_trigger_cpumask_backtrace+0xb7/0xf0
<4>[  123.874782]  watchdog+0x3d1/0x5f0
<4>[  123.874828]  ? reset_hung_task_detector+0x10/0x10
<4>[  123.874855]  kthread+0x119/0x130
<4>[  123.874884]  ? _kthread_create_on_node+0x60/0x60
<4>[  123.874918]  ret_from_fork+0x3a/0x50
<6>[  123.874981] Sending NMI from CPU 0 to CPUs 1:
<4>[  123.875544] NMI backtrace for cpu 1
<4>[  123.875553] CPU: 1 PID: 335 Comm: in:imklog Tainted: G     U  W         4.17.0-rc3-g844dd95837ab-drmtip_30+ #1
<4>[  123.875559] Hardware name:  /NUC5CPYB, BIOS PYBSWCEL.86A.0058.2016.1102.1842 11/02/2016
<4>[  123.875563] RIP: 0010:__lock_acquire+0x451/0x1b50
<4>[  123.875569] RSP: 0018:ffffa00dc051fc40 EFLAGS: 00000046
<4>[  123.875577] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000
<4>[  123.875582] RDX: 0000000000000000 RSI: e604c7afba7e4a00 RDI: 0000000000000000
<4>[  123.875587] RBP: ffffa00dc051fd20 R08: ffffffff880fb8fa R09: 0000000000000001
<4>[  123.875592] R10: 0000000000000000 R11: ffffffff89244598 R12: ffff9b52ada20040
<4>[  123.875597] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000046
<4>[  123.875602] FS:  00007efd3474a700(0000) GS:ffff9b52bfd00000(0000) knlGS:0000000000000000
<4>[  123.875607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[  123.875611] CR2: 00007f07c9b92208 CR3: 000000016949e000 CR4: 00000000001006e0
<4>[  123.875614] Call Trace:
<4>[  123.875618]  ? vsnprintf+0xf2/0x4b0
<4>[  123.875622]  ? trace_hardirqs_on_thunk+0x1a/0x1c
<4>[  123.875625]  ? lock_acquire+0xa6/0x210
<4>[  123.875629]  lock_acquire+0xa6/0x210
<4>[  123.875632]  ? do_syslog+0x38a/0x520
<4>[  123.875636]  _raw_spin_lock+0x2a/0x40
<4>[  123.875639]  ? do_syslog+0x38a/0x520
<4>[  123.875642]  do_syslog+0x38a/0x520
<4>[  123.875646]  ? __fdget_pos+0x3a/0x50
<4>[  123.875649]  kmsg_read+0x39/0x50
<4>[  123.875653]  proc_reg_read+0x37/0x60
<4>[  123.875656]  __vfs_read+0x31/0x150
<4>[  123.875659]  vfs_read+0x9e/0x140
<4>[  123.875662]  ksys_read+0x50/0xc0
<4>[  123.875666]  do_syscall_64+0x55/0x190
<4>[  123.875670]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4>[  123.875674] RIP: 0033:0x7efd375fc384
<4>[  123.875677] RSP: 002b:00007efd347294c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
<4>[  123.875687] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007efd375fc384
<4>[  123.875691] RDX: 0000000000001fa0 RSI: 00007efd34729d00 RDI: 0000000000000005
<4>[  123.875696] RBP: 00007efd34729d00 R08: 0000000000000000 R09: 000055b9a0df7fd8
<4>[  123.875701] R10: 2ce33e6c02ce33e7 R11: 0000000000000246 R12: 0000000000001fa0
<4>[  123.875706] R13: 0000000000001fa0 R14: 0000000000001f9f R15: 00007efd34729f38
<4>[  123.875708] Code: 48 c7 c7 66 f1 06 89 e8 f7 53 01 00 65 48 8b 3c 25 80 4e 01 00 e8 90 da ff ff e8 ab dc ff ff e8 0b 06 84 00 45 31 f6 48 8b 75 c8 <65> 48 33 34 25 28 00 00 00 44 89 f0 0f 85 f8 0d 00 00 48 81 c4 
<0>[  123.879930] Kernel panic - not syncing: hung_task: blocked tasks
<4>[  123.879975] CPU: 1 PID: 26 Comm: khungtaskd Tainted: G     U  W         4.17.0-rc3-g844dd95837ab-drmtip_30+ #1
<4>[  123.879998] Hardware name:  /NUC5CPYB, BIOS PYBSWCEL.86A.0058.2016.1102.1842 11/02/2016
<4>[  123.880016] Call Trace:
<4>[  123.880056]  dump_stack+0x67/0x9b
<4>[  123.880092]  panic+0xde/0x22d
<4>[  123.880149]  watchdog+0x3dd/0x5f0
<4>[  123.880191]  ? reset_hung_task_detector+0x10/0x10
<4>[  123.880218]  kthread+0x119/0x130
<4>[  123.880249]  ? _kthread_create_on_node+0x60/0x60
<4>[  123.880285]  ret_from_fork+0x3a/0x50