Created attachment 120528 [details]
journalctl log - normal suspend right after the failed one

There is one "SPLL enabled" warning during suspend, but I doubt that it would cause a spurious wake event. Did you try to reproduce the same issue by disabling the i915 driver?

kolp23@yopmail.com - I'm sorry about this second delay until getting back to you. Can you please check this with the latest kernel (preferable from drm-tip) ?

Todays DRM-Tip on Broadwell NUC, this happens on every suspend/resume test on IGT

 5044.290694] PM: resume of devices complete after 523.764 msecs
[ 5044.291443] PM: Finishing wakeup.
[ 5044.291446] Restarting tasks ... done.
[ 5044.299394] pcieport 0000:00:1c.0: Enabling MPC IRBNCE
[ 5044.299400] pcieport 0000:00:1c.0: Intel PCH root port ACS workaround enabled
[ 5044.299521] [drm:intel_power_well_disable [i915]] disabling display
[ 5044.299555] [drm:hsw_set_power_well [i915]] Requesting to disable the power well
[ 5044.299575] [drm:intel_power_well_disable [i915]] disabling always-on
[ 5044.299768] [drm:intel_runtime_suspend [i915]] Suspending device
[ 5044.299835] [drm:hsw_enable_pc8 [i915]] Enabling package C8+
[ 5044.299869] ------------[ cut here ]------------
[ 5044.299895] WARNING: CPU: 0 PID: 16523 at drivers/gpu/drm/i915/intel_display.c:8637 hsw_enable_pc8+0x6e5/0x730 [i915]
[ 5044.299897] Power well on
[ 5044.299900] Modules linked in: snd_hda_intel i915 vgem snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_codec snd_hwdep lpc_ich e1000e snd_hda_core mei_me snd_pcm ptp prime_numbers mei pps_core i2c_hid i2c_designware_platform i2c_designware_core [last unloaded: i915]
[ 5044.299967] CPU: 0 PID: 16523 Comm: kworker/0:2 Tainted: G     U  W       4.11.0-rc5-CI-CI_DRM_334+ #1
[ 5044.299970] Hardware name:                  /NUC5i7RYB, BIOS RYBDWi35.86A.0362.2017.0118.0940 01/18/2017
[ 5044.299975] Workqueue: pm pm_runtime_work
[ 5044.299980] Call Trace:
[ 5044.299985]  dump_stack+0x67/0x92
[ 5044.299990]  __warn+0xc6/0xe0
[ 5044.299996]  ? pci_pm_runtime_resume+0xa0/0xa0
[ 5044.299999]  warn_slowpath_fmt+0x46/0x50
[ 5044.300025]  ? gen6_read32+0x1a2/0x2c0 [i915]
[ 5044.300051]  hsw_enable_pc8+0x6e5/0x730 [i915]
[ 5044.300056]  ? pci_pm_runtime_resume+0xa0/0xa0
[ 5044.300075]  intel_runtime_suspend+0x1e2/0x290 [i915]
[ 5044.300080]  pci_pm_runtime_suspend+0x58/0x180
[ 5044.300084]  __rpm_callback+0xb4/0x1f0
[ 5044.300090]  rpm_callback+0x1f/0x80
[ 5044.300093]  ? pci_pm_runtime_resume+0xa0/0xa0
[ 5044.300097]  rpm_suspend+0x11e/0x6f0
[ 5044.300104]  pm_runtime_work+0x76/0xc0
[ 5044.300108]  process_one_work+0x1f2/0x6d0
[ 5044.300115]  worker_thread+0x49/0x4a0
[ 5044.300122]  kthread+0x107/0x140
[ 5044.300125]  ? process_one_work+0x6d0/0x6d0
[ 5044.300129]  ? kthread_create_on_node+0x40/0x40
[ 5044.300134]  ret_from_fork+0x2e/0x40
[ 5044.300148] ---[ end trace 1994579fb4695d55 ]---
[ 5044.304243] [drm:intel_runtime_suspend [i915]] Device suspended
[ 5045.479520] [drm:intel_hdmi_detect [i915]] [CONNECTOR:48:HDMI-A-1]
[ 5045.491473] [drm:intel_runtime_resume [i915]] Resuming device
[ 5045.493879] [drm:hsw_disable_pc8 [i915]] Disabling package C8+
[ 5045.493970] [drm:intel_update_cdclk [i915]] Current CD clock rate: 540000 kHz, VCO: 0 kHz, ref: 0 kHz
[ 5045.494200] [drm:intel_runtime_resume [i915]] Device resumed
[ 5045.494227] [drm:intel_power_well_enable [i915]] enabling always-on

(In reply to Tomi Sarvela from comment #4)
> Todays DRM-Tip on Broadwell NUC, this happens on every suspend/resume test
> on IGT
> 

Could you provide the link to the dmesg log?

Tomi do you still see the same problem with current configuration?

I'm still getting hang slightly after hsw_enable_pc8 [i915]] Enabling package C8+.

Very recent DRM-Tip with BDW-5250u, testing extended.testlist

Hangs to igt@core_auth@many-magics:

<7>[12714.127640] [drm:gmbus_xfer [i915]] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
<7>[12714.127678] [drm:gmbus_xfer [i915]] GMBUS [i915 gmbus dpc] NAK on first message, retry
<7>[12714.129636] [drm:gmbus_xfer [i915]] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
<7>[12714.129644] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
<7>[12714.131637] [drm:gmbus_xfer [i915]] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
<7>[12714.131675] [drm:gmbus_xfer [i915]] GMBUS [i915 gmbus dpc] NAK on first message, retry
<7>[12714.133638] [drm:gmbus_xfer [i915]] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
<7>[12714.133646] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
<7>[12714.133681] [drm:intel_power_well_disable [i915]] disabling always-on
<7>[12714.133692] [drm:drm_helper_hpd_irq_event] [CONNECTOR:67:HDMI-A-2] status updated from disconnected to disconnected
<7>[12714.133728] [drm:intel_runtime_suspend [i915]] Suspending device
<7>[12714.133839] [drm:hsw_enable_pc8 [i915]] Enabling package C8+
<7>[12714.137624] [drm:intel_runtime_suspend [i915]] Device suspended
<3>[12719.135623] INFO: task core_auth:10655 blocked for more than 60 seconds.
<3>[12719.135668]       Tainted: G     U          4.13.0-rc3-CI-CI_DRM_502+ #1
<3>[12719.135701] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
<6>[12719.135739] core_auth       D    0 10655   1463 0x00000000
<4>[12719.135746] Call Trace:
<4>[12719.135756]  __schedule+0x3c3/0xb00
<4>[12719.135764]  schedule+0x3b/0x90
<4>[12719.135769]  schedule_timeout+0x24c/0x490
<4>[12719.135775]  ? _raw_spin_unlock_irq+0x27/0x50
<4>[12719.135781]  ? __this_cpu_preempt_check+0x13/0x20
<4>[12719.135786]  ? trace_hardirqs_on_caller+0xe3/0x1b0
<4>[12719.135793]  wait_for_common+0x123/0x1e0
<4>[12719.135797]  ? wait_for_common+0x123/0x1e0
<4>[12719.135803]  ? wake_up_q+0x80/0x80
<4>[12719.135810]  wait_for_completion+0x18/0x20
<4>[12719.135814]  flush_work+0x20c/0x2e0
<4>[12719.135819]  ? flush_workqueue_prep_pwqs+0x1c0/0x1c0
<4>[12719.135832]  drain_all_pages+0x19c/0x1f0
<4>[12719.135838]  __alloc_pages_nodemask+0x6d7/0x12a0
<4>[12719.135852]  ? new_slab+0x3f2/0x510
<4>[12719.135857]  ? __this_cpu_preempt_check+0x13/0x20
<4>[12719.135864]  new_slab+0x26f/0x510
<4>[12719.135871]  ___slab_alloc.constprop.30+0x325/0x3d0
<4>[12719.135913]  ? i915_ppgtt_create+0x2c/0x1f0 [i915]
<4>[12719.135918]  ? kasprintf+0x3a/0x50
<4>[12719.135924]  ? vsnprintf+0x1e3/0x4b0
<4>[12719.135961]  ? i915_ppgtt_create+0x2c/0x1f0 [i915]
<4>[12719.135998]  ? i915_ppgtt_create+0x2c/0x1f0 [i915]
<4>[12719.136002]  __slab_alloc.isra.24.constprop.29+0x43/0x80
<4>[12719.136006]  ? __slab_alloc.isra.24.constprop.29+0x43/0x80
<4>[12719.136040]  ? i915_ppgtt_create+0x2c/0x1f0 [i915]
<4>[12719.136044]  kmem_cache_alloc_trace+0x21f/0x2c0
<4>[12719.136080]  i915_ppgtt_create+0x2c/0x1f0 [i915]
<4>[12719.136114]  i915_gem_create_context+0x6b/0x2b0 [i915]
<4>[12719.136148]  i915_gem_context_open+0x42/0x80 [i915]
<4>[12719.136183]  i915_gem_open+0x8d/0xc0 [i915]
<4>[12719.136214]  i915_driver_open+0x9/0x10 [i915]
<4>[12719.136220]  drm_open+0x228/0x480
<4>[12719.136224]  ? drm_stub_open+0x78/0xf0
<4>[12719.136231]  drm_stub_open+0xb8/0xf0
<4>[12719.136237]  chrdev_open+0x9c/0x1f0
<4>[12719.136243]  ? cdev_put+0x20/0x20
<4>[12719.136248]  do_dentry_open.isra.1+0x1ce/0x2e0
<4>[12719.136254]  vfs_open+0x42/0x60
<4>[12719.136259]  path_openat+0x26f/0x990
<4>[12719.136268]  do_filp_open+0x85/0xf0
<4>[12719.136279]  ? _raw_spin_unlock+0x2c/0x50
<4>[12719.136287]  do_sys_open+0x12a/0x200
<4>[12719.136292]  ? do_sys_open+0x12a/0x200
<4>[12719.136299]  SyS_open+0x19/0x20
<4>[12719.136304]  entry_SYSCALL_64_fastpath+0x1c/0xb1
<4>[12719.136307] RIP: 0033:0x7fc7c238bc60
<4>[12719.136311] RSP: 002b:00007ffdbf62c698 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
<4>[12719.136317] RAX: ffffffffffffffda RBX: ffffffff8146cae3 RCX: 00007fc7c238bc60
<4>[12719.136321] RDX: 0000000000025238 RSI: 0000000000080002 RDI: 00007ffdbf62c6d0
<4>[12719.136324] RBP: ffffc90000f97f88 R08: 000000000001c000 R09: 0000000000000000
<4>[12719.136327] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000040000
<4>[12719.136330] R13: 00007fc7c0de8010 R14: 00007fc7c0ee9010 R15: 000000000002523c
<4>[12719.136337]  ? __this_cpu_preempt_check+0x13/0x20
<4>[12719.136345] 
<4>[12719.136345] Showing all locks held in the system:
<4>[12719.136352] 2 locks held by khungtaskd/38:
<4>[12719.136360]  #0:  (rcu_read_lock){......}, at: [<ffffffff811386ae>] watchdog+0x9e/0x600
<4>[12719.136377]  #1:  (tasklist_lock){.+.+..}, at: [<ffffffff810d6e0d>] debug_show_all_locks+0x3d/0x1a0
<4>[12719.136407] 3 locks held by core_auth/10655:
<4>[12719.136410]  #0:  (drm_global_mutex){+.+.+.}, at: [<ffffffff81590019>] drm_stub_open+0x39/0xf0
<4>[12719.136426]  #1:  (&dev->struct_mutex){+.+.+.}, at: [<ffffffffa0185627>] i915_gem_context_open+0x37/0x80 [i915]
<4>[12719.136470]  #2:  (pcpu_drain_mutex){+.+...}, at: [<ffffffff811851ba>] drain_all_pages+0x3a/0x1f0
<4>[12719.136487] 
<4>[12719.136490] =============================================
<4>[12719.136490] 
<4>[12719.136493] NMI backtrace for cpu 0
<4>[12719.136498] CPU: 0 PID: 38 Comm: khungtaskd Tainted: G     U          4.13.0-rc3-CI-CI_DRM_502+ #1
<4>[12719.136501] Hardware name:                  /NUC5i5RYB, BIOS RYBDWi35.86A.0362.2017.0118.0940 01/18/2017
<4>[12719.136504] Call Trace:
<4>[12719.136508]  dump_stack+0x68/0x9f
<4>[12719.136513]  nmi_cpu_backtrace+0xbe/0xc0
<4>[12719.136518]  ? irq_force_complete_move+0xf0/0xf0
<4>[12719.136523]  nmi_trigger_cpumask_backtrace+0xc0/0x100
<4>[12719.136529]  arch_trigger_cpumask_backtrace+0x14/0x20
<4>[12719.136533]  watchdog+0x44f/0x600
<4>[12719.136539]  kthread+0x10f/0x150
<4>[12719.136543]  ? reset_hung_task_detector+0x10/0x10
<4>[12719.136547]  ? kthread_create_on_node+0x40/0x40
<4>[12719.136552]  ret_from_fork+0x27/0x40
<6>[12719.136563] Sending NMI from CPU 0 to CPUs 1-3:
<4>[12719.136568] NMI backtrace for cpu 1
<4>[12719.136570] CPU: 1 PID: 980 Comm: java Tainted: G     U          4.13.0-rc3-CI-CI_DRM_502+ #1
<4>[12719.136571] Hardware name:                  /NUC5i5RYB, BIOS RYBDWi35.86A.0362.2017.0118.0940 01/18/2017
<4>[12719.136572] task: ffff880245d88040 task.stack: ffffc900005a4000
<4>[12719.136575] RIP: 0010:mutex_trylock+0x8/0x100
<4>[12719.136576] RSP: 0000:ffffc900005a78b8 EFLAGS: 00000246
<4>[12719.136578] RAX: 0000000000000000 RBX: ffff880245d88040 RCX: 0000000000000000
<4>[12719.136579] RDX: 0000000000000000 RSI: ffffc900005a7907 RDI: ffff8801ecc00070
<4>[12719.136580] RBP: ffffc900005a78c8 R08: 28f5c28f5c28f5c3 R09: 0000000000000000
<4>[12719.136581] R10: 00000000176b70d5 R11: 0000000052bd729f R12: ffff8801ecc00070
<4>[12719.136582] R13: ffffc900005a7907 R14: 00000000000004de R15: ffff8801ecc05f68
<4>[12719.136583] FS:  00007f7de48f3700(0000) GS:ffff880256c80000(0000) knlGS:0000000000000000
<4>[12719.136584] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[12719.136585] CR2: 00000082d2679520 CR3: 0000000248e69000 CR4: 00000000003406e0
<4>[12719.136586] Call Trace:
<4>[12719.136621]  shrinker_lock+0x48/0x80 [i915]
<4>[12719.136654]  i915_gem_shrinker_count+0x29/0x100 [i915]
<4>[12719.136657]  shrink_slab.part.17+0xfe/0x5d0
<4>[12719.136661]  shrink_node+0x2f2/0x300
<4>[12719.136664]  do_try_to_free_pages+0xc1/0x310
<4>[12719.136666]  try_to_free_pages+0x11d/0x330
<4>[12719.136670]  __alloc_pages_nodemask+0x66d/0x12a0
<4>[12719.136673]  ? _raw_spin_unlock+0x2c/0x50
<4>[12719.136676]  ? swap_swapcount+0x4e/0x70
<4>[12719.136678]  __read_swap_cache_async+0x146/0x250
<4>[12719.136681]  read_swap_cache_async+0x17/0x40
<4>[12719.136683]  swapin_readahead+0x179/0x1e0
<4>[12719.136684]  ? find_get_entry+0x15c/0x210
<4>[12719.136686]  ? pagecache_get_page+0x27/0x220
<4>[12719.136689]  do_swap_page+0x29c/0x760
<4>[12719.136691]  ? do_swap_page+0x29c/0x760
<4>[12719.136693]  __handle_mm_fault+0x732/0xd00
<4>[12719.136696]  handle_mm_fault+0x17c/0x350
<4>[12719.136698]  __do_page_fault+0x277/0x570
<4>[12719.136700]  do_page_fault+0xc/0x10
<4>[12719.136702]  page_fault+0x22/0x30
<4>[12719.136703] RIP: 0033:0x7f7dfd55270c
<4>[12719.136704] RSP: 002b:00007f7de48f2b10 EFLAGS: 00010202
<4>[12719.136706] RAX: ffffffffffffff92 RBX: 000000000000316f RCX: 00007f7dfd552709
<4>[12719.136706] RDX: 0000000000000003 RSI: 0000000000000089 RDI: 00007f7df4176254
<4>[12719.136707] RBP: 00007f7de48f2bd0 R08: 00007f7df4176228 R09: 00000000ffffffff
<4>[12719.136708] R10: 00007f7de48f2b70 R11: 0000000000000202 R12: 0000000000000003
<4>[12719.136709] R13: 00007f7de48f2b70 R14: ffffffffffffff92 R15: 00007f7de48f2b00
<4>[12719.136711] Code: 5b 5d c3 48 c7 c6 7d 21 c6 81 48 c7 c7 c3 0c c5 81 e8 59 44 86 ff 0f ff eb c1 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 56 41 55 <41> 54 53 49 89 fc 49 c7 c6 92 21 c6 81 48 83 ec 08 48 8b 1f 65 
<4>[12719.136739] NMI backtrace for cpu 3
<4>[12719.136741] CPU: 3 PID: 51 Comm: kswapd0 Tainted: G     U          4.13.0-rc3-CI-CI_DRM_502+ #1
<4>[12719.136742] Hardware name:                  /NUC5i5RYB, BIOS RYBDWi35.86A.0362.2017.0118.0940 01/18/2017
<4>[12719.136743] task: ffff88024c6327c0 task.stack: ffffc900001e8000
<4>[12719.136745] RIP: 0010:mutex_trylock+0x0/0x100
<4>[12719.136747] RSP: 0000:ffffc900001ebc88 EFLAGS: 00000246
<4>[12719.136748] RAX: 0000000000000000 RBX: ffff88024c6327c0 RCX: 0000000000000000
<4>[12719.136749] RDX: 0000000000000000 RSI: ffffc900001ebcbf RDI: ffff8801ecc00070
<4>[12719.136750] RBP: ffffc900001ebca8 R08: 28f5c28f5c28f5c3 R09: 0000000000000000
<4>[12719.136751] R10: 00000000c8efd751 R11: 0000000036fa5258 R12: ffff8801ecc00070
<4>[12719.136752] R13: ffffc900001ebcbf R14: 000000000000017f R15: ffff8801ecc05f68
<4>[12719.136754] FS:  0000000000000000(0000) GS:ffff880256d80000(0000) knlGS:0000000000000000
<4>[12719.136755] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[12719.136756] CR2: 00007ffe2691c368 CR3: 0000000248e69000 CR4: 00000000003406e0
<4>[12719.136757] Call Trace:
<4>[12719.136790]  ? shrinker_lock+0x48/0x80 [i915]
<4>[12719.136821]  i915_gem_shrinker_count+0x29/0x100 [i915]
<4>[12719.136824]  shrink_slab.part.17+0xfe/0x5d0
<4>[12719.136828]  shrink_node+0x2f2/0x300
<4>[12719.136831]  kswapd+0x32a/0x940
<4>[12719.136834]  kthread+0x10f/0x150
<4>[12719.136836]  ? mem_cgroup_shrink_node+0x300/0x300
<4>[12719.136838]  ? kthread_create_on_node+0x40/0x40
<4>[12719.136840]  ret_from_fork+0x27/0x40
<4>[12719.136841] Code: 48 89 df e8 b3 fc ff ff 5b 5d c3 48 c7 c6 7d 21 c6 81 48 c7 c7 c3 0c c5 81 e8 59 44 86 ff 0f ff eb c1 66 0f 1f 84 00 00 00 00 00 <55> 48 89 e5 41 56 41 55 41 54 53 49 89 fc 49 c7 c6 92 21 c6 81 
<4>[12719.136870] NMI backtrace for cpu 2
<4>[12719.136872] CPU: 2 PID: 10649 Comm: pool Tainted: G     U          4.13.0-rc3-CI-CI_DRM_502+ #1
<4>[12719.136873] Hardware name:                  /NUC5i5RYB, BIOS RYBDWi35.86A.0362.2017.0118.0940 01/18/2017
<4>[12719.136874] task: ffff880249fe8040 task.stack: ffffc90000984000
<4>[12719.136877] RIP: 0010:mutex_trylock+0x0/0x100
<4>[12719.136878] RSP: 0000:ffffc900009878d0 EFLAGS: 00000246
<4>[12719.136880] RAX: 0000000000000000 RBX: ffff880249fe8040 RCX: 0000000000000000
<4>[12719.136881] RDX: 0000000000000000 RSI: ffffc90000987907 RDI: ffff8801ecc00070
<4>[12719.136882] RBP: ffffc900009878f0 R08: 28f5c28f5c28f5c3 R09: 0000000000000000
<4>[12719.136883] R10: 00000000176b70d5 R11: 0000000052bd729f R12: ffff8801ecc00070
<4>[12719.136884] R13: ffffc90000987907 R14: 00000000000004de R15: ffff8801ecc05f68
<4>[12719.136886] FS:  00007efc77fff700(0000) GS:ffff880256d00000(0000) knlGS:0000000000000000
<4>[12719.136887] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[12719.136888] CR2: 00007ffef62877b8 CR3: 0000000242f92000 CR4: 00000000003406e0
<4>[12719.136888] Call Trace:
<4>[12719.136923]  ? shrinker_lock+0x48/0x80 [i915]
<4>[12719.136956]  i915_gem_shrinker_count+0x29/0x100 [i915]
<4>[12719.136959]  shrink_slab.part.17+0xfe/0x5d0
<4>[12719.136963]  shrink_node+0x2f2/0x300
<4>[12719.136966]  do_try_to_free_pages+0xc1/0x310
<4>[12719.136969]  try_to_free_pages+0x11d/0x330
<4>[12719.136972]  __alloc_pages_nodemask+0x66d/0x12a0
<4>[12719.136975]  ? _raw_spin_unlock+0x2c/0x50
<4>[12719.136977]  ? swap_swapcount+0x4e/0x70
<4>[12719.136980]  __read_swap_cache_async+0x146/0x250
<4>[12719.136982]  read_swap_cache_async+0x17/0x40
<4>[12719.136985]  swapin_readahead+0x179/0x1e0
<4>[12719.136986]  ? find_get_entry+0x15c/0x210
<4>[12719.136988]  ? pagecache_get_page+0x27/0x220
<4>[12719.136991]  do_swap_page+0x29c/0x760
<4>[12719.136993]  ? do_swap_page+0x29c/0x760
<4>[12719.136995]  __handle_mm_fault+0x732/0xd00
<4>[12719.136998]  handle_mm_fault+0x17c/0x350
<4>[12719.137000]  __do_page_fault+0x277/0x570
<4>[12719.137003]  do_page_fault+0xc/0x10
<4>[12719.137004]  page_fault+0x22/0x30
<4>[12719.137005] RIP: 0033:0x7efc8cf364a2
<4>[12719.137006] RSP: 002b:00007efc77ffec28 EFLAGS: 00010202
<4>[12719.137008] RAX: ffffffffffffff92 RBX: 000000000000000f RCX: 00007efc8cf36499
<4>[12719.137009] RDX: 000000000000000f RSI: 0000000000000080 RDI: 0000000001a0c1d0
<4>[12719.137010] RBP: 0000000001a0c1c8 R08: 00007ffe3f5bf080 R09: 000000000000315d
<4>[12719.137011] R10: 00007efc77ffec40 R11: 0000000000000246 R12: 0000000001a0c1c0
<4>[12719.137012] R13: 0000000000000001 R14: 0000000001a0c1c8 R15: 0000000001a98380
<4>[12719.137014] Code: 48 89 df e8 b3 fc ff ff 5b 5d c3 48 c7 c6 7d 21 c6 81 48 c7 c7 c3 0c c5 81 e8 59 44 86 ff 0f ff eb c1 66 0f 1f 84 00 00 00 00 00 <55> 48 89 e5 41 56 41 55 41 54 53 49 89 fc 49 c7 c6 92 21 c6 81 
<0>[12719.137572] Kernel panic - not syncing: hung_task: blocked tasks
<4>[12719.137604] CPU: 0 PID: 38 Comm: khungtaskd Tainted: G     U          4.13.0-rc3-CI-CI_DRM_502+ #1
<4>[12719.137644] Hardware name:                  /NUC5i5RYB, BIOS RYBDWi35.86A.0362.2017.0118.0940 01/18/2017
<4>[12719.137687] Call Trace:
<4>[12719.137703]  dump_stack+0x68/0x9f
<4>[12719.137722]  panic+0xcf/0x212
<4>[12719.137746]  watchdog+0x45b/0x600
<4>[12719.137769]  kthread+0x10f/0x150
<4>[12719.137788]  ? reset_hung_task_detector+0x10/0x10
<4>[12719.137813]  ? kthread_create_on_node+0x40/0x40
<4>[12719.137840]  ret_from_fork+0x27/0x40
<0>[12719.137874] Kernel Offset: disabled

Resolving as not seen on CI for 100 builds. 
Can you reporter verify if issue still exists.

Due to lack of updates from reporter and by comment 8, assuming fixed. Closing, otherwise please reopen. Thank you.