All tests - dmesg-fail/dmesg-warn - BUG: workqueue leaked lock or atomic.*

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7971/re-tgl-u2/igt@gem_exec_parallel@bcs0-fds.html

<6> [18.739956] Console: switching to colour dummy device 80x25
<6> [18.739995] [IGT] gem_exec_parallel: executing
<5> [18.753693] Setting dangerous option reset - tainting kernel
<6> [18.756836] [IGT] gem_exec_parallel: starting subtest bcs0-fds
<3> [18.823693] BUG: workqueue leaked lock or atomic: kworker/6:2/0x00000000/347
     last function: kfree_rcu_monitor
<4> [18.823735] 4 locks held by kworker/6:2/347:
<4> [18.823737]  #0: ffffffff826c63a0 (drm_connector_list_iter){.+.+}, at: intel_dp_connector_atomic_check+0x9a/0x2b0 [i915]
<4> [18.823805]  #1: ffffffff826c63a0 (drm_connector_list_iter){.+.+}, at: intel_dp_connector_atomic_check+0x134/0x2b0 [i915]
<4> [18.823843]  #2: ffffffff826c63a0 (drm_connector_list_iter){.+.+}, at: intel_dp_connector_atomic_check+0x9a/0x2b0 [i915]
<4> [18.823878]  #3: ffffffff826c63a0 (drm_connector_list_iter){.+.+}, at: intel_dp_connector_atomic_check+0x134/0x2b0 [i915]
<4> [18.823913] CPU: 6 PID: 347 Comm: kworker/6:2 Tainted: G     U            5.6.0-rc2-CI-CI_DRM_7971+ #1
<4> [18.823915] Hardware name: Intel Corporation Tiger Lake Client Platform/TigerLake U DDR4 SODIMM RVP, BIOS TGLSFWI1.R00.2457.A16.1912270059 12/27/2019
<4> [18.823918] Workqueue: events kfree_rcu_monitor
<4> [18.823920] Call Trace:
<4> [18.823925]  dump_stack+0x71/0x9b
<4> [18.823929]  process_one_work+0x4f6/0x600
<4> [18.823931]  ? worker_thread+0xc9/0x380
<4> [18.823937]  worker_thread+0x37/0x380
<4> [18.823941]  ? process_one_work+0x600/0x600
<4> [18.823943]  kthread+0x119/0x130
<4> [18.823945]  ? kthread_park+0x80/0x80
<4> [18.823949]  ret_from_fork+0x24/0x50
<3> [18.835874] BUG: workqueue leaked lock or atomic: kworker/6:2/0x00000000/347
     last function: kfree_rcu_work
<4> [18.835904] 4 locks held by kworker/6:2/347:
<4> [18.835906]  #0: ffffffff826c63a0 (drm_connector_list_iter){.+.+}, at: intel_dp_connector_atomic_check+0x9a/0x2b0 [i915]
<4> [18.835975]  #1: ffffffff826c63a0 (drm_connector_list_iter){.+.+}, at: intel_dp_connector_atomic_check+0x134/0x2b0 [i915]
<4> [18.836013]  #2: ffffffff826c63a0 (drm_connector_list_iter){.+.+}, at: intel_dp_connector_atomic_check+0x9a/0x2b0 [i915]
<4> [18.836046]  #3: ffffffff826c63a0 (drm_connector_list_iter){.+.+}, at: intel_dp_connector_atomic_check+0x134/0x2b0 [i915]
<4> [18.836077] CPU: 6 PID: 347 Comm: kworker/6:2 Tainted: G     U            5.6.0-rc2-CI-CI_DRM_7971+ #1
<4> [18.836079] Hardware name: Intel Corporation Tiger Lake Client Platform/TigerLake U DDR4 SODIMM RVP, BIOS TGLSFWI1.R00.2457.A16.1912270059 12/27/2019

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7971/re-tgl-u2/igt@core_auth@basic-auth.html
4> [47.195255] 4 locks held by kworker/7:2/199:
<4> [47.195256]  #0: ffffffff826c63a0 (drm_connector_list_iter){.+.+}, at: intel_dp_connector_atomic_check+0x9a/0x2b0 [i915]
<4> [47.195288]  #1: ffffffff826c63a0 (drm_connector_list_iter){.+.+}, at: intel_dp_connector_atomic_check+0x134/0x2b0 [i915]
<4> [47.195312]  #2: ffffffff826c63a0 (drm_connector_list_iter){.+.+}, at: intel_dp_connector_atomic_check+0x9a/0x2b0 [i915]
<4> [47.195334]  #3: ffffffff826c63a0 (drm_connector_list_iter){.+.+}, at: intel_dp_connector_atomic_check+0x134/0x2b0 [i915]
<4> [47.195357] CPU: 7 PID: 199 Comm: kworker/7:2 Tainted: G     U            5.6.0-rc2-CI-CI_DRM_7971+ #1
<4> [47.195358] Hardware name: Intel Corporation Tiger Lake Client Platform/TigerLake U DDR4 SODIMM RVP, BIOS TGLSFWI1.R00.2457.A16.1912270059 12/27/2019
<4> [47.195360] Workqueue: events drm_fb_helper_dirty_work
<4> [47.195362] Call Trace:
<4> [47.195364]  dump_stack+0x71/0x9b
<4> [47.195366]  process_one_work+0x4f6/0x600
<4> [47.195367]  ? worker_thread+0xc9/0x380
<4> [47.195372]  worker_thread+0x37/0x380
<4> [47.195375]  ? process_one_work+0x600/0x600
<4> [47.195376]  kthread+0x119/0x130
<4> [47.195378]  ? kthread_park+0x80/0x80
<4> [47.195380]  ret_from_fork+0x24/0x50
<3> [47.195391] BUG: workqueue leaked lock or atomic: kworker/7:2/0x00000000/199
     last function: drm_fb_helper_dirty_work
<3> [47.197409] BUG: workqueue leaked lock or atomic: kworker/u16:2/0x00000000/198
     last function: ext4_end_io_rsv_work
<4> [47.199551] 4 locks held by kworker/7:2/199:
<4> [47.199552]  #0: ffffffff826c63a0 (drm_connector_list_iter){.+.+}, at: intel_dp_connector_atomic_check+0x9a/0x2b0 [i915]
<4> [47.199587]  #1: ffffffff826c63a0 (drm_connector_list_iter){.+.+}, at: intel_dp_connector_atomic_check+0x134/0x2b0 [i915]
<4> [47.206184]  #2: 
<4> [47.206186] 4 locks held by kworker/u16:2/198:
<4> [47.206187] ffffffff826c63a0 (drm_connector_list_iter){.+.+}, at: intel_dp_connector_atomic_check+0x9a/0x2b0 [i915]
<4> [47.206237]  #0: ffffffff826c63a0 (drm_connector_list_iter
<4> [47.206241]  #3: 
<4> [47.206242] ){.+.+}
<4> [47.206244] ffffffff826c63a0
<4> [47.206296] , at: intel_dp_connector_atomic_check+0x9a/0x2b0 [i915]
<4> [47.206298]  (
<4> [47.206299]  #1: 
<4> [47.206299] drm_connector_list_iter){.+.+}
<4> [47.206302] ffffffff826c63a0
<4> [47.206341] , at: intel_dp_connector_atomic_check+0x134/0x2b0 [i915]
<4> [47.206344] CPU: 7 PID: 199 Comm: kworker/7:2 Tainted: G     U            5.6.0-rc2-CI-CI_DRM_7971+ #1
<4> [47.206344]  (drm_connector_list_iter){.+.+}, at: intel_dp_connector_atomic_check+0x134/0x2b0 [i915]
<4> [47.206394] Hardware name: Intel Corporation Tiger Lake Client Platform/TigerLake U DDR4 SODIMM RVP, BIOS TGLSFWI1.R00.2457.A16.1912270059 12/27/2019
<4> [47.206396]  #2: ffffffff826c63a0
<4> [47.206399] Workqueue: events drm_fb_helper_dirty_work
<4> [47.206399]  (drm_connector_list_iter
<4> [47.206402] ){.+.+}, at: intel_dp_connector_atomic_check+0x9a/0x2b0 [i915]
<4> [47.206446] Call Trace:
<4> [47.206447]  #3: ffffffff826c63a0 (drm_connector_list_iter
<4> [47.206451]  dump_stack+0x71/0x9b
<4> [47.206451] ){.+.+}, at: intel_dp_connector_atomic_check+0x134/0x2b0 [i915]
<4> [47.206497]  process_one_work+0x4f6/0x600
<4> [47.206500]  ? worker_thread+0xc9/0x380
<4> [47.206509]  worker_thread+0x37/0x380
<4> [47.206514]  ? process_one_work+0x600/0x600
<4> [47.206517]  kthread+0x119/0x130
<4> [47.206520]  ? kthread_park+0x80/0x80
<4> [47.206526]  ret_from_fork+0x24/0x50
<4> [47.206541] CPU: 5 PID: 198 Comm: kworker/u16:2 Tainted: G     U            5.6.0-rc2-CI-CI_DRM_7971+ #1
<4> [47.206545] Hardware name: Intel Corporation Tiger Lake Client Platform/TigerLake U DDR4 SODIMM RVP, BIOS TGLSFWI1.R00.2457.A16.1912270059 12/27/2019
<4> [47.206551] Workqueue: ext4-rsv-conversion ext4_end_io_rsv_work
<4> [47.206554] Call Trace:
<4> [47.206559]  dump_stack+0x71/0x9b
<4> [47.206563]  process_one_work+0x4f6/0x600
<4> [47.206566]  ? worker_thread+0xc9/0x380
<4> [47.206572]  worker_thread+0x37/0x380
<3> [47.206579] BUG: workqueue leaked lock or atomic: kworker/7:2/0x00000000/199