igt@gem_eio@in-flight-contexts-1us - dmesg-warn - drm_WARN_ON(!queue_delayed_work(system_unbound_wq, &power_domains->async_put_work, msecs_to_jiffies(100)))

https://intel-gfx-ci.01.org/tree/drm-tip/IGT_6071/shard-skl3/igt@gem_eio@in-flight-contexts-1us.html

<4> [352.589137] ------------[ cut here ]------------
<4> [352.589411] i915 0000:00:02.0: drm_WARN_ON(!queue_delayed_work(system_unbound_wq, &power_domains->async_put_work, msecs_to_jiffies(100)))
<7> [352.589505] i915 0000:00:02.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 4 created
<4> [352.589570] WARNING: CPU: 3 PID: 34 at drivers/gpu/drm/i915/display/intel_display_power.c:2207 queue_async_put_domains_work+0xa5/0xb0 [i915]
<4> [352.592039] Modules linked in: vgem snd_hda_codec_hdmi i915 x86_pkg_temp_thermal coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel btusb btrtl btbcm btintel snd_hda_intel
<7> [352.591903] i915 0000:00:02.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 5 created
<4> [352.592493]  cdc_ether snd_intel_dspcfg snd_hda_codec bluetooth snd_hwdep usbnet snd_hda_core r8152 mii ecdh_generic ecc snd_pcm prime_numbers intel_lpss_pci pinctrl_sunrisepoint
<4> [352.593197] CPU: 3 PID: 34 Comm: kworker/3:1 Tainted: G     U            5.12.0-rc8-CI-CI_DRM_9984+ #1
<4> [352.593245] Hardware name: Google Caroline/Caroline, BIOS MrChromebox 08/27/2018
<4> [352.593285] Workqueue: events __intel_wakeref_put_work [i915]
<7> [352.594222] i915 0000:00:02.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 6 created
<4> [352.595285] 
<4> [352.595319] RIP: 0010:queue_async_put_domains_work+0xa5/0xb0 [i915]
<4> [352.596833] Code: 48 8b 5f 50 48 85 db 75 03 48 8b 1f e8 84 43 30 e1 48 c7 c1 40 81 54 a0 48 89 da 48 c7 c7 09 40 57 a0 48 89 c6 e8 38 7b 65 e1 <0f> 0b eb 91 0f 1f 80 00 00 00 00 8b 46 08 85 c0 7e 05 e9 24 e4 ff
<4> [352.596883] RSP: 0018:ffffc90000153da0 EFLAGS: 00010286
<4> [352.596952] RAX: 0000000000000000 RBX: ffff888101747880 RCX: 0000000000000001
<4> [352.596991] RDX: 0000000080000001 RSI: ffffffff8235e8c3 RDI: 00000000ffffffff
<4> [352.597142] RBP: 00000000e9400000 R08: 0000000000000001 R09: 0000000000000001
<4> [352.597182] R10: 000000005230bce8 R11: 0000000048f947fe R12: ffff88812f45ad28
<4> [352.597216] R13: 00000000e9400000 R14: ffff88812f45ad18 R15: 000000000000003b
<7> [352.596749] i915 0000:00:02.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 7 created
<4> [352.597351] FS:  0000000000000000(0000) GS:ffff88817a980000(0000) knlGS:0000000000000000
<4> [352.597395] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [352.597436] CR2: 0000558d29eabd40 CR3: 0000000101146004 CR4: 00000000003706e0
<4> [352.597477] Call Trace:
<4> [352.597549]  __intel_display_power_put_async+0xc1/0x120 [i915]
<7> [352.599054] i915 0000:00:02.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 8 created
<4> [352.599918]  __gt_park+0x146/0x1a0 [i915]
<4> [352.601204]  ____intel_wakeref_put_last+0x22/0x70 [i915]
<4> [352.603610]  process_one_work+0x270/0x5c0
<7> [352.603318] i915 0000:00:02.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 9 created
<4> [352.603977]  worker_thread+0x37/0x380
<4> [352.604080]  ? process_one_work+0x5c0/0x5c0
<4> [352.604141]  kthread+0x146/0x170
<4> [352.604198]  ? kthread_park+0x80/0x80
<4> [352.604289]  ret_from_fork+0x22/0x30
<4> [352.604516] irq event stamp: 138599
<4> [352.604551] hardirqs last  enabled at (138605): [<ffffffff8112ba72>] console_unlock+0x4c2/0x5d0
<4> [352.604605] hardirqs last disabled at (138610): [<ffffffff8112b9e2>] console_unlock+0x432/0x5d0
<4> [352.604762] softirqs last  enabled at (138564): [<ffffffff81e00342>] __do_softirq+0x342/0x48e
<4> [352.604825] softirqs last disabled at (138557): [<ffffffff810b470d>] irq_exit_rcu+0xad/0xd0
<4> [352.604881] ---[ end trace 44bd53eae4fe74cc ]---