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Bug#898825: linux-image-4.16.0-1-amd64: KMS/graphics not working on Lenovo P50 with 4.16



I noticed that after a few minutes, the kernel logs additional messages.
Aside from libvirt, the tasks all appear to be stuck inside nouveau/drm
funtions.

May 16 11:15:20 kernel: INFO: task kworker/7:0:53 blocked for more than 120 seconds.
May 16 11:15:20 kernel:       Tainted: G           O     4.16.0-1-amd64 #1 Debian 4.16.5-1
May 16 11:15:20 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 16 11:15:20 kernel: kworker/7:0     D    0    53      2 0x80000000
May 16 11:15:20 kernel: Workqueue: events output_poll_execute [drm_kms_helper]
May 16 11:15:20 kernel: Call Trace:
May 16 11:15:20 kernel:  ? __schedule+0x291/0x870
May 16 11:15:20 kernel:  schedule+0x28/0x80
May 16 11:15:20 kernel:  schedule_preempt_disabled+0xa/0x10
May 16 11:15:20 kernel:  __mutex_lock.isra.1+0x1a0/0x4e0
May 16 11:15:20 kernel:  ? drm_setup_crtcs+0x104/0xaf0 [drm_kms_helper]
May 16 11:15:20 kernel:  drm_setup_crtcs+0x104/0xaf0 [drm_kms_helper]
May 16 11:15:20 kernel:  ? schedule_preempt_disabled+0xa/0x10
May 16 11:15:20 kernel:  __drm_fb_helper_initial_config_and_unlock+0x3d/0x450 [drm_kms_helper]
May 16 11:15:20 kernel:  output_poll_execute+0xa2/0x1b0 [drm_kms_helper]
May 16 11:15:20 kernel:  process_one_work+0x17b/0x360
May 16 11:15:20 kernel:  worker_thread+0x2e/0x390
May 16 11:15:20 kernel:  ? process_one_work+0x360/0x360
May 16 11:15:20 kernel:  kthread+0x113/0x130
May 16 11:15:20 kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
May 16 11:15:20 kernel:  ret_from_fork+0x35/0x40
May 16 11:15:20 kernel: INFO: task kworker/0:1:58 blocked for more than 120 seconds.
May 16 11:15:20 kernel:       Tainted: G           O     4.16.0-1-amd64 #1 Debian 4.16.5-1
May 16 11:15:20 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 16 11:15:20 kernel: kworker/0:1     D    0    58      2 0x80000000
May 16 11:15:20 kernel: Workqueue: pm pm_runtime_work
May 16 11:15:20 kernel: Call Trace:
May 16 11:15:20 kernel:  ? __schedule+0x291/0x870
May 16 11:15:20 kernel:  schedule+0x28/0x80
May 16 11:15:20 kernel:  schedule_timeout+0x1ee/0x380
May 16 11:15:20 kernel:  wait_for_completion+0x12c/0x190
May 16 11:15:20 kernel:  ? wake_up_q+0x70/0x70
May 16 11:15:20 kernel:  ? get_work_pool+0x40/0x40
May 16 11:15:20 kernel:  flush_work+0x11e/0x1d0
May 16 11:15:20 kernel:  ? worker_attach_to_pool+0x90/0x90
May 16 11:15:20 kernel:  __cancel_work_timer+0x126/0x1b0
May 16 11:15:20 kernel:  ? enqueue_entity+0x106/0x640
May 16 11:15:20 kernel:  ? pci_pm_runtime_resume+0xa0/0xa0
May 16 11:15:20 kernel:  nouveau_pmops_runtime_suspend+0x38/0xb0 [nouveau]
May 16 11:15:20 kernel:  pci_pm_runtime_suspend+0x61/0x170
May 16 11:15:20 kernel:  ? pci_pm_runtime_resume+0xa0/0xa0
May 16 11:15:20 kernel:  __rpm_callback+0xc7/0x200
May 16 11:15:20 kernel:  ? __switch_to_asm+0x40/0x70
May 16 11:15:20 kernel:  rpm_callback+0x1f/0x70
May 16 11:15:20 kernel:  ? pci_pm_runtime_resume+0xa0/0xa0
May 16 11:15:20 kernel:  rpm_suspend+0x12d/0x610
May 16 11:15:20 kernel:  ? __switch_to_asm+0x34/0x70
May 16 11:15:20 kernel:  ? __switch_to_asm+0x40/0x70
May 16 11:15:20 kernel:  pm_runtime_work+0x6e/0x90
May 16 11:15:20 kernel:  process_one_work+0x17b/0x360
May 16 11:15:20 kernel:  worker_thread+0x2e/0x390
May 16 11:15:20 kernel:  ? process_one_work+0x360/0x360
May 16 11:15:20 kernel:  kthread+0x113/0x130
May 16 11:15:20 kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
May 16 11:15:20 kernel:  ret_from_fork+0x35/0x40
May 16 11:15:20 kernel: INFO: task kworker/7:1:79 blocked for more than 120 seconds.
May 16 11:15:20 kernel:       Tainted: G           O     4.16.0-1-amd64 #1 Debian 4.16.5-1
May 16 11:15:20 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 16 11:15:20 kernel: kworker/7:1     D    0    79      2 0x80000000
May 16 11:15:20 kernel: Workqueue: events_long drm_dp_mst_link_probe_work [drm_kms_helper]
May 16 11:15:20 kernel: Call Trace:
May 16 11:15:20 kernel:  ? __schedule+0x291/0x870
May 16 11:15:20 kernel:  schedule+0x28/0x80
May 16 11:15:20 kernel:  schedule_preempt_disabled+0xa/0x10
May 16 11:15:20 kernel:  __mutex_lock.isra.1+0x1a0/0x4e0
May 16 11:15:20 kernel:  ? _cond_resched+0x15/0x40
May 16 11:15:20 kernel:  ? drm_modeset_lock+0x6f/0xf0 [drm]
May 16 11:15:20 kernel:  ? drm_fb_helper_add_one_connector+0x27/0x50 [drm_kms_helper]
May 16 11:15:20 kernel:  drm_fb_helper_add_one_connector+0x27/0x50 [drm_kms_helper]
May 16 11:15:20 kernel:  nv50_mstm_register_connector+0x2c/0x50 [nouveau]
May 16 11:15:20 kernel:  drm_dp_add_port+0x31d/0x450 [drm_kms_helper]
May 16 11:15:20 kernel:  ? try_to_del_timer_sync+0x4d/0x80
May 16 11:15:20 kernel:  ? del_timer_sync+0x35/0x40
May 16 11:15:20 kernel:  ? schedule_timeout+0x181/0x380
May 16 11:15:20 kernel:  ? prepare_to_wait_event+0x7d/0x150
May 16 11:15:20 kernel:  ? _cond_resched+0x15/0x40
May 16 11:15:20 kernel:  ? mutex_lock+0xe/0x30
May 16 11:15:20 kernel:  drm_dp_send_link_address+0x168/0x200 [drm_kms_helper]
May 16 11:15:20 kernel:  drm_dp_check_and_send_link_address+0x87/0xd0 [drm_kms_helper]
May 16 11:15:20 kernel:  drm_dp_mst_link_probe_work+0x4b/0x80 [drm_kms_helper]
May 16 11:15:20 kernel:  process_one_work+0x17b/0x360
May 16 11:15:20 kernel:  worker_thread+0x2e/0x390
May 16 11:15:20 kernel:  ? process_one_work+0x360/0x360
May 16 11:15:20 kernel:  kthread+0x113/0x130
May 16 11:15:20 kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
May 16 11:15:20 kernel:  ret_from_fork+0x35/0x40
May 16 11:15:20 kernel: INFO: task libvirtd:1217 blocked for more than 120 seconds.
May 16 11:15:20 kernel:       Tainted: G           O     4.16.0-1-amd64 #1 Debian 4.16.5-1
May 16 11:15:20 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 16 11:15:20 kernel: libvirtd        D    0  1217      1 0x00000000
May 16 11:15:20 kernel: Call Trace:
May 16 11:15:20 kernel:  ? __schedule+0x291/0x870
May 16 11:15:20 kernel:  schedule+0x28/0x80
May 16 11:15:20 kernel:  __pm_runtime_barrier+0xaa/0x170
May 16 11:15:20 kernel:  ? finish_wait+0x80/0x80
May 16 11:15:20 kernel:  pm_runtime_barrier+0x47/0xa0
May 16 11:15:20 kernel:  pci_config_pm_runtime_get+0x36/0x50
May 16 11:15:20 kernel:  pci_read_config+0x8f/0x260
May 16 11:15:20 kernel:  ? simple_attr_release+0x20/0x20
May 16 11:15:20 kernel:  ? _cond_resched+0x15/0x40
May 16 11:15:20 kernel:  ? __kmalloc+0x181/0x210
May 16 11:15:20 kernel:  kernfs_fop_read+0xa1/0x180
May 16 11:15:20 kernel:  vfs_read+0x89/0x130
May 16 11:15:20 kernel:  SyS_read+0x52/0xc0
May 16 11:15:20 kernel:  do_syscall_64+0x6c/0x130
May 16 11:15:20 kernel:  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
May 16 11:15:20 kernel: RIP: 0033:0x7fb75c0a9a04
May 16 11:15:20 kernel: RSP: 002b:00007fb6ffffeb00 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
May 16 11:15:20 kernel: RAX: ffffffffffffffda RBX: 0000000000000014 RCX: 00007fb75c0a9a04
May 16 11:15:20 kernel: RDX: 0000000000000001 RSI: 00007fb6ffffeb97 RDI: 0000000000000014
May 16 11:15:20 kernel: RBP: 00007fb6ffffeb97 R08: 0000000000000000 R09: 0000000000000000
May 16 11:15:20 kernel: R10: 00007fb75d9c15e8 R11: 0000000000000246 R12: 0000000000000001
May 16 11:15:20 kernel: R13: 0000000000000000 R14: 0000000000000014 R15: 00007fb6f8083f78
May 16 11:15:20 kernel: INFO: task Xorg.wrap:1036 blocked for more than 120 seconds.
May 16 11:15:20 kernel:       Tainted: G           O     4.16.0-1-amd64 #1 Debian 4.16.5-1
May 16 11:15:20 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 16 11:15:20 kernel: Xorg.wrap       D    0  1036   1034 0x00000000
May 16 11:15:20 kernel: Call Trace:
May 16 11:15:20 kernel:  ? __schedule+0x291/0x870
May 16 11:15:20 kernel:  schedule+0x28/0x80
May 16 11:15:20 kernel:  rpm_resume+0x107/0x790
May 16 11:15:20 kernel:  ? finish_wait+0x80/0x80
May 16 11:15:20 kernel:  __pm_runtime_resume+0x47/0x70
May 16 11:15:20 kernel:  nouveau_drm_open+0x3b/0x1a0 [nouveau]
May 16 11:15:20 kernel:  ? _cond_resched+0x15/0x40
May 16 11:15:20 kernel:  drm_open+0x20a/0x470 [drm]
May 16 11:15:20 kernel:  drm_stub_open+0xbc/0x100 [drm]
May 16 11:15:20 kernel:  chrdev_open+0xc4/0x1d0
May 16 11:15:20 kernel:  ? cdev_put.part.1+0x20/0x20
May 16 11:15:20 kernel:  do_dentry_open+0x1b3/0x2d0
May 16 11:15:20 kernel:  path_openat+0x661/0x1660
May 16 11:15:20 kernel:  do_filp_open+0x9b/0x110
May 16 11:15:20 kernel:  ? i915_driver_postclose+0x3f/0x50 [i915]
May 16 11:15:20 kernel:  ? drm_release+0x2e8/0x3c0 [drm]
May 16 11:15:20 kernel:  ? __check_object_size+0xa7/0x1a0
May 16 11:15:20 kernel:  ? do_sys_open+0x1bd/0x250
May 16 11:15:20 kernel:  do_sys_open+0x1bd/0x250
May 16 11:15:20 kernel:  do_syscall_64+0x6c/0x130
May 16 11:15:20 kernel:  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
May 16 11:15:20 kernel: RIP: 0033:0x7f2eeaf303ab
May 16 11:15:20 kernel: RSP: 002b:00007ffe9118ee60 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
May 16 11:15:20 kernel: RAX: ffffffffffffffda RBX: 00007ffe9118efd0 RCX: 00007f2eeaf303ab
May 16 11:15:20 kernel: RDX: 0000000000000002 RSI: 00007ffe9118efd0 RDI: 00000000ffffff9c
May 16 11:15:20 kernel: RBP: 0000000000000001 R08: 0000000000000001 R09: 00007ffe9118ec27
May 16 11:15:20 kernel: R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe9118eef0
May 16 11:15:20 kernel: R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000004
May 16 11:17:20 kernel: INFO: task kworker/7:0:53 blocked for more than 120 seconds.
May 16 11:17:20 kernel:       Tainted: G           O     4.16.0-1-amd64 #1 Debian 4.16.5-1
May 16 11:17:20 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 16 11:17:20 kernel: kworker/7:0     D    0    53      2 0x80000000
May 16 11:17:20 kernel: Workqueue: events output_poll_execute [drm_kms_helper]
May 16 11:17:20 kernel: Call Trace:
May 16 11:17:20 kernel:  ? __schedule+0x291/0x870
May 16 11:17:20 kernel:  schedule+0x28/0x80
May 16 11:17:20 kernel:  schedule_preempt_disabled+0xa/0x10
May 16 11:17:20 kernel:  __mutex_lock.isra.1+0x1a0/0x4e0
May 16 11:17:20 kernel:  ? drm_setup_crtcs+0x104/0xaf0 [drm_kms_helper]
May 16 11:17:20 kernel:  drm_setup_crtcs+0x104/0xaf0 [drm_kms_helper]
May 16 11:17:20 kernel:  ? schedule_preempt_disabled+0xa/0x10
May 16 11:17:20 kernel:  __drm_fb_helper_initial_config_and_unlock+0x3d/0x450 [drm_kms_helper]
May 16 11:17:20 kernel:  output_poll_execute+0xa2/0x1b0 [drm_kms_helper]
May 16 11:17:20 kernel:  process_one_work+0x17b/0x360
May 16 11:17:20 kernel:  worker_thread+0x2e/0x390
May 16 11:17:20 kernel:  ? process_one_work+0x360/0x360
May 16 11:17:20 kernel:  kthread+0x113/0x130
May 16 11:17:20 kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
May 16 11:17:20 kernel:  ret_from_fork+0x35/0x40
May 16 11:17:20 kernel: INFO: task kworker/0:1:58 blocked for more than 120 seconds.
May 16 11:17:20 kernel:       Tainted: G           O     4.16.0-1-amd64 #1 Debian 4.16.5-1
May 16 11:17:20 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 16 11:17:20 kernel: kworker/0:1     D    0    58      2 0x80000000
May 16 11:17:20 kernel: Workqueue: pm pm_runtime_work
May 16 11:17:20 kernel: Call Trace:
May 16 11:17:20 kernel:  ? __schedule+0x291/0x870
May 16 11:17:20 kernel:  schedule+0x28/0x80
May 16 11:17:20 kernel:  schedule_timeout+0x1ee/0x380
May 16 11:17:20 kernel:  wait_for_completion+0x12c/0x190
May 16 11:17:20 kernel:  ? wake_up_q+0x70/0x70
May 16 11:17:20 kernel:  ? get_work_pool+0x40/0x40
May 16 11:17:20 kernel:  flush_work+0x11e/0x1d0
May 16 11:17:20 kernel:  ? worker_attach_to_pool+0x90/0x90
May 16 11:17:20 kernel:  __cancel_work_timer+0x126/0x1b0
May 16 11:17:20 kernel:  ? enqueue_entity+0x106/0x640
May 16 11:17:20 kernel:  ? pci_pm_runtime_resume+0xa0/0xa0
May 16 11:17:20 kernel:  nouveau_pmops_runtime_suspend+0x38/0xb0 [nouveau]
May 16 11:17:20 kernel:  pci_pm_runtime_suspend+0x61/0x170
May 16 11:17:20 kernel:  ? pci_pm_runtime_resume+0xa0/0xa0
May 16 11:17:20 kernel:  __rpm_callback+0xc7/0x200
May 16 11:17:20 kernel:  ? __switch_to_asm+0x40/0x70
May 16 11:17:20 kernel:  rpm_callback+0x1f/0x70
May 16 11:17:20 kernel:  ? pci_pm_runtime_resume+0xa0/0xa0
May 16 11:17:20 kernel:  rpm_suspend+0x12d/0x610
May 16 11:17:20 kernel:  ? __switch_to_asm+0x34/0x70
May 16 11:17:20 kernel:  ? __switch_to_asm+0x40/0x70
May 16 11:17:20 kernel:  pm_runtime_work+0x6e/0x90
May 16 11:17:20 kernel:  process_one_work+0x17b/0x360
May 16 11:17:20 kernel:  worker_thread+0x2e/0x390
May 16 11:17:20 kernel:  ? process_one_work+0x360/0x360
May 16 11:17:20 kernel:  kthread+0x113/0x130
May 16 11:17:20 kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
May 16 11:17:20 kernel:  ret_from_fork+0x35/0x40
May 16 11:17:20 kernel: INFO: task kworker/7:1:79 blocked for more than 120 seconds.
May 16 11:17:20 kernel:       Tainted: G           O     4.16.0-1-amd64 #1 Debian 4.16.5-1
May 16 11:17:20 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 16 11:17:20 kernel: kworker/7:1     D    0    79      2 0x80000000
May 16 11:17:20 kernel: Workqueue: events_long drm_dp_mst_link_probe_work [drm_kms_helper]
May 16 11:17:20 kernel: Call Trace:
May 16 11:17:20 kernel:  ? __schedule+0x291/0x870
May 16 11:17:20 kernel:  schedule+0x28/0x80
May 16 11:17:20 kernel:  schedule_preempt_disabled+0xa/0x10
May 16 11:17:20 kernel:  __mutex_lock.isra.1+0x1a0/0x4e0
May 16 11:17:20 kernel:  ? _cond_resched+0x15/0x40
May 16 11:17:20 kernel:  ? drm_modeset_lock+0x6f/0xf0 [drm]
May 16 11:17:20 kernel:  ? drm_fb_helper_add_one_connector+0x27/0x50 [drm_kms_helper]
May 16 11:17:20 kernel:  drm_fb_helper_add_one_connector+0x27/0x50 [drm_kms_helper]
May 16 11:17:20 kernel:  nv50_mstm_register_connector+0x2c/0x50 [nouveau]
May 16 11:17:20 kernel:  drm_dp_add_port+0x31d/0x450 [drm_kms_helper]
May 16 11:17:20 kernel:  ? try_to_del_timer_sync+0x4d/0x80
May 16 11:17:20 kernel:  ? del_timer_sync+0x35/0x40
May 16 11:17:21 kernel:  ? schedule_timeout+0x181/0x380
May 16 11:17:21 kernel:  ? prepare_to_wait_event+0x7d/0x150
May 16 11:17:21 kernel:  ? _cond_resched+0x15/0x40
May 16 11:17:21 kernel:  ? mutex_lock+0xe/0x30
May 16 11:17:21 kernel:  drm_dp_send_link_address+0x168/0x200 [drm_kms_helper]
May 16 11:17:21 kernel:  drm_dp_check_and_send_link_address+0x87/0xd0 [drm_kms_helper]
May 16 11:17:21 kernel:  drm_dp_mst_link_probe_work+0x4b/0x80 [drm_kms_helper]
May 16 11:17:21 kernel:  process_one_work+0x17b/0x360
May 16 11:17:21 kernel:  worker_thread+0x2e/0x390
May 16 11:17:21 kernel:  ? process_one_work+0x360/0x360
May 16 11:17:21 kernel:  kthread+0x113/0x130
May 16 11:17:21 kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
May 16 11:17:21 kernel:  ret_from_fork+0x35/0x40
May 16 11:17:21 kernel: INFO: task libvirtd:1217 blocked for more than 120 seconds.
May 16 11:17:21 kernel:       Tainted: G           O     4.16.0-1-amd64 #1 Debian 4.16.5-1
May 16 11:17:21 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 16 11:17:21 kernel: libvirtd        D    0  1217      1 0x00000000
May 16 11:17:21 kernel: Call Trace:
May 16 11:17:21 kernel:  ? __schedule+0x291/0x870
May 16 11:17:21 kernel:  schedule+0x28/0x80
May 16 11:17:21 kernel:  __pm_runtime_barrier+0xaa/0x170
May 16 11:17:21 kernel:  ? finish_wait+0x80/0x80
May 16 11:17:21 kernel:  pm_runtime_barrier+0x47/0xa0
May 16 11:17:21 kernel:  pci_config_pm_runtime_get+0x36/0x50
May 16 11:17:21 kernel:  pci_read_config+0x8f/0x260
May 16 11:17:21 kernel:  ? simple_attr_release+0x20/0x20
May 16 11:17:21 kernel:  ? _cond_resched+0x15/0x40
May 16 11:17:21 kernel:  ? __kmalloc+0x181/0x210
May 16 11:17:21 kernel:  kernfs_fop_read+0xa1/0x180
May 16 11:17:21 kernel:  vfs_read+0x89/0x130
May 16 11:17:21 kernel:  SyS_read+0x52/0xc0
May 16 11:17:21 kernel:  do_syscall_64+0x6c/0x130
May 16 11:17:21 kernel:  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
May 16 11:17:21 kernel: RIP: 0033:0x7fb75c0a9a04
May 16 11:17:21 kernel: RSP: 002b:00007fb6ffffeb00 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
May 16 11:17:21 kernel: RAX: ffffffffffffffda RBX: 0000000000000014 RCX: 00007fb75c0a9a04
May 16 11:17:21 kernel: RDX: 0000000000000001 RSI: 00007fb6ffffeb97 RDI: 0000000000000014
May 16 11:17:21 kernel: RBP: 00007fb6ffffeb97 R08: 0000000000000000 R09: 0000000000000000
May 16 11:17:21 kernel: R10: 00007fb75d9c15e8 R11: 0000000000000246 R12: 0000000000000001
May 16 11:17:21 kernel: R13: 0000000000000000 R14: 0000000000000014 R15: 00007fb6f8083f78
May 16 11:17:21 kernel: INFO: task Xorg.wrap:1036 blocked for more than 120 seconds.
May 16 11:17:21 kernel:       Tainted: G           O     4.16.0-1-amd64 #1 Debian 4.16.5-1
May 16 11:17:21 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 16 11:17:21 kernel: Xorg.wrap       D    0  1036   1034 0x00000000
May 16 11:17:21 kernel: Call Trace:
May 16 11:17:21 kernel:  ? __schedule+0x291/0x870
May 16 11:17:21 kernel:  schedule+0x28/0x80
May 16 11:17:21 kernel:  rpm_resume+0x107/0x790
May 16 11:17:21 kernel:  ? finish_wait+0x80/0x80
May 16 11:17:21 kernel:  __pm_runtime_resume+0x47/0x70
May 16 11:17:21 kernel:  nouveau_drm_open+0x3b/0x1a0 [nouveau]
May 16 11:17:21 kernel:  ? _cond_resched+0x15/0x40
May 16 11:17:21 kernel:  drm_open+0x20a/0x470 [drm]
May 16 11:17:21 kernel:  drm_stub_open+0xbc/0x100 [drm]
May 16 11:17:21 kernel:  chrdev_open+0xc4/0x1d0
May 16 11:17:21 kernel:  ? cdev_put.part.1+0x20/0x20
May 16 11:17:21 kernel:  do_dentry_open+0x1b3/0x2d0
May 16 11:17:21 kernel:  path_openat+0x661/0x1660
May 16 11:17:21 kernel:  do_filp_open+0x9b/0x110
May 16 11:17:21 kernel:  ? i915_driver_postclose+0x3f/0x50 [i915]
May 16 11:17:21 kernel:  ? drm_release+0x2e8/0x3c0 [drm]
May 16 11:17:21 kernel:  ? __check_object_size+0xa7/0x1a0
May 16 11:17:21 kernel:  ? do_sys_open+0x1bd/0x250
May 16 11:17:21 kernel:  do_sys_open+0x1bd/0x250
May 16 11:17:21 kernel:  do_syscall_64+0x6c/0x130
May 16 11:17:21 kernel:  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
May 16 11:17:21 kernel: RIP: 0033:0x7f2eeaf303ab
May 16 11:17:21 kernel: RSP: 002b:00007ffe9118ee60 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
May 16 11:17:21 kernel: RAX: ffffffffffffffda RBX: 00007ffe9118efd0 RCX: 00007f2eeaf303ab
May 16 11:17:21 kernel: RDX: 0000000000000002 RSI: 00007ffe9118efd0 RDI: 00000000ffffff9c
May 16 11:17:21 kernel: RBP: 0000000000000001 R08: 0000000000000001 R09: 00007ffe9118ec27
May 16 11:17:21 kernel: R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe9118eef0
May 16 11:17:21 kernel: R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000004

-- 
Sam Morris <https://robots.org.uk/>
CAAA AA1A CA69 A83A 892B  1855 D20B 4202 5CDA 27B9


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