INFO: task swapper/0:1 blocked for more than 143 seconds.
Not tainted 6.16.0-rc4-syzkaller-00286-gc435a4f487e8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:swapper/0 state:D stack:18744 pid:1 tgid:1 ppid:0 task_flags:0x0140 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x16f5/0x4d00 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6878
virtio_gpu_queue_ctrl_sgs drivers/gpu/drm/virtio/virtgpu_vq.c:397 [inline]
virtio_gpu_queue_fenced_ctrl_buffer+0x6d6/0x1020 drivers/gpu/drm/virtio/virtgpu_vq.c:497
virtio_gpu_resource_flush drivers/gpu/drm/virtio/virtgpu_plane.c:225 [inline]
virtio_gpu_primary_plane_update+0xcdd/0x1380 drivers/gpu/drm/virtio/virtgpu_plane.c:300
drm_atomic_helper_commit_planes+0x60c/0xec0 drivers/gpu/drm/drm_atomic_helper.c:2838
drm_atomic_helper_commit_tail+0x5d/0x520 drivers/gpu/drm/drm_atomic_helper.c:1788
commit_tail+0x29a/0x3a0 drivers/gpu/drm/drm_atomic_helper.c:1873
drm_atomic_helper_commit+0xa6b/0xb10 drivers/gpu/drm/drm_atomic_helper.c:2111
drm_atomic_commit+0x262/0x2c0 drivers/gpu/drm/drm_atomic.c:1577
drm_client_modeset_commit_atomic+0x620/0x760 drivers/gpu/drm/drm_client_modeset.c:1101
drm_client_modeset_commit_locked+0xcb/0x4d0 drivers/gpu/drm/drm_client_modeset.c:1204
pan_display_atomic drivers/gpu/drm/drm_fb_helper.c:1387 [inline]
drm_fb_helper_pan_display+0x3e7/0xbd0 drivers/gpu/drm/drm_fb_helper.c:1447
fb_pan_display+0x39b/0x680 drivers/video/fbdev/core/fbmem.c:193
bit_update_start+0x4d/0x1e0 drivers/video/fbdev/core/bitblit.c:380
fbcon_switch+0x1568/0x2040 drivers/video/fbdev/core/fbcon.c:2192
redraw_screen+0x56a/0xe90 drivers/tty/vt/vt.c:965
fbcon_prepare_logo+0x750/0xa10 drivers/video/fbdev/core/fbcon.c:637
con2fb_init_display drivers/video/fbdev/core/fbcon.c:823 [inline]
set_con2fb_map+0xd30/0x13c0 drivers/video/fbdev/core/fbcon.c:889
do_fb_registered drivers/video/fbdev/core/fbcon.c:2998 [inline]
fbcon_fb_registered+0x24e/0x610 drivers/video/fbdev/core/fbcon.c:3014
do_register_framebuffer drivers/video/fbdev/core/fbmem.c:509 [inline]
register_framebuffer+0x70b/0x8b0 drivers/video/fbdev/core/fbmem.c:575
__drm_fb_helper_initial_config_and_unlock+0x1307/0x18a0 drivers/gpu/drm/drm_fb_helper.c:1851
drm_fbdev_client_hotplug+0x16c/0x230 drivers/gpu/drm/clients/drm_fbdev_client.c:52
drm_client_register+0x172/0x210 drivers/gpu/drm/drm_client.c:140
drm_fbdev_client_setup+0x19f/0x3f0 drivers/gpu/drm/clients/drm_fbdev_client.c:159
drm_client_setup+0x60/0x120 drivers/gpu/drm/clients/drm_client_setup.c:39
virtio_gpu_probe+0x23a/0x2a0 drivers/gpu/drm/virtio/virtgpu_drv.c:110
virtio_dev_probe+0x917/0xbe0 drivers/virtio/virtio.c:341
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x26a/0x9a0 drivers/base/dd.c:657
__driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:799
driver_probe_device+0x4f/0x430 drivers/base/dd.c:829
__driver_attach+0x452/0x700 drivers/base/dd.c:1215
bus_for_each_dev+0x230/0x2b0 drivers/base/bus.c:370
bus_add_driver+0x345/0x640 drivers/base/bus.c:678
driver_register+0x23a/0x320 drivers/base/driver.c:249
virtio_gpu_driver_init+0xde/0x190 drivers/gpu/drm/virtio/virtgpu_drv.c:194
do_one_initcall+0x233/0x820 init/main.c:1274
do_initcall_level+0x137/0x1f0 init/main.c:1336
do_initcalls+0x69/0xd0 init/main.c:1352
kernel_init_freeable+0x3d9/0x570 init/main.c:1584
kernel_init+0x1d/0x1d0 init/main.c:1474
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
INFO: task kworker/0:0:9 blocked for more than 143 seconds.
Not tainted 6.16.0-rc4-syzkaller-00286-gc435a4f487e8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:0 state:D stack:27464 pid:9 tgid:9 ppid:2 task_flags:0x4208060 flags:0x00004000
Workqueue: events virtio_gpu_dequeue_ctrl_func
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x16f5/0x4d00 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6878
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x724/0xe80 kernel/locking/mutex.c:747
drm_client_dev_hotplug+0xdc/0x4f0 drivers/gpu/drm/drm_client_event.c:96
virtio_gpu_dequeue_ctrl_func+0x500/0x920 drivers/gpu/drm/virtio/virtgpu_vq.c:263
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
INFO: task kworker/0:2:787 blocked for more than 143 seconds.
Not tainted 6.16.0-rc4-syzkaller-00286-gc435a4f487e8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:2 state:D stack:25848 pid:787 tgid:787 ppid:2 task_flags:0x4208060 flags:0x00004000
Workqueue: events drm_fb_helper_damage_work
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x16f5/0x4d00 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6878
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__ww_mutex_lock+0x101e/0x2760 kernel/locking/mutex.c:754
ww_mutex_lock+0x3f/0x1c0 kernel/locking/mutex.c:872
modeset_lock+0x2be/0x650 drivers/gpu/drm/drm_modeset_lock.c:314
drm_atomic_helper_dirtyfb+0xc60/0xee0 drivers/gpu/drm/drm_damage_helper.c:162
drm_fbdev_shmem_helper_fb_dirty+0x160/0x2f0 drivers/gpu/drm/drm_fbdev_shmem.c:117
drm_fb_helper_fb_dirty drivers/gpu/drm/drm_fb_helper.c:379 [inline]
drm_fb_helper_damage_work+0x224/0x710 drivers/gpu/drm/drm_fb_helper.c:402
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Showing all locks held in the system:
10 locks held by swapper/0/1:
#0: ffff888000aa0170 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline]
#0: ffff888000aa0170 (&dev->mutex){....}-{4:4}, at: __device_driver_lock drivers/base/dd.c:1094 [inline]
#0: ffff888000aa0170 (&dev->mutex){....}-{4:4}, at: __driver_attach+0x447/0x700 drivers/base/dd.c:1214
#1: ffff888033cb0300 (&dev->clientlist_mutex){+.+.}-{4:4}, at: drm_client_register+0x4f/0x210 drivers/gpu/drm/drm_client.c:126
#2: ffffffff8e91e968 (registration_lock){+.+.}-{4:4}, at: register_framebuffer+0x81/0x8b0 drivers/video/fbdev/core/fbmem.c:574
#3: ffffffff8e1330a0 (console_lock){+.+.}-{0:0}, at: fbcon_fb_registered+0x49/0x610 drivers/video/fbdev/core/fbcon.c:3010
#4: ffff8880340ce280 (&helper->lock){+.+.}-{4:4}, at: drm_fb_helper_pan_display+0xbe/0xbd0 drivers/gpu/drm/drm_fb_helper.c:1440
#5: ffff888033cb01b8 (&dev->master_mutex){+.+.}-{4:4}, at: drm_master_internal_acquire+0x20/0x80 drivers/gpu/drm/drm_auth.c:452
#6: ffff8880340ce098 (&client->modeset_mutex){+.+.}-{4:4}, at: drm_client_modeset_commit_locked+0x4c/0x4d0 drivers/gpu/drm/drm_client_modeset.c:1202
#7: ffffc90000136ab0 (crtc_ww_class_acquire){+.+.}-{0:0}, at: drm_client_modeset_commit_atomic+0xda/0x760 drivers/gpu/drm/drm_client_modeset.c:1040
#8: ffffc90000136ad8 (crtc_ww_class_mutex){+.+.}-{4:4}, at: drm_client_modeset_commit_atomic+0xda/0x760 drivers/gpu/drm/drm_client_modeset.c:1040
#9: ffffffff8e9f93f0 (drm_unplug_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#9: ffffffff8e9f93f0 (drm_unplug_srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#9: ffffffff8e9f93f0 (drm_unplug_srcu){.+.+}-{0:0}, at: drm_dev_enter+0x49/0x150 drivers/gpu/drm/drm_drv.c:452
3 locks held by kworker/0:0/9:
#0: ffff88801a474d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801a474d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc900001b7bc0 ((work_completion)(&vgvq->dequeue_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc900001b7bc0 ((work_completion)(&vgvq->dequeue_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffff888033cb0300 (&dev->clientlist_mutex){+.+.}-{4:4}, at: drm_client_dev_hotplug+0xdc/0x4f0 drivers/gpu/drm/drm_client_event.c:96
1 lock held by khungtaskd/26:
#0: ffffffff8e13ee20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e13ee20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e13ee20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6770
2 locks held by kworker/u4:5/173:
#0: ffff88801a479148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801a479148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc90001a27bc0 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90001a27bc0 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
4 locks held by kworker/0:2/787:
#0: ffff88801a474d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801a474d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc90001b27bc0 ((work_completion)(&helper->damage_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90001b27bc0 ((work_completion)(&helper->damage_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffffc90001b27810 (crtc_ww_class_acquire){+.+.}-{0:0}, at: drm_atomic_helper_dirtyfb+0xca/0xee0 drivers/gpu/drm/drm_damage_helper.c:123
#3: ffffc90001b27838 (crtc_ww_class_mutex){+.+.}-{4:4}, at: drm_atomic_helper_dirtyfb+0xca/0xee0 drivers/gpu/drm/drm_damage_helper.c:123
=============================================