INFO: task kworker/0:11:10774 blocked for more than 143 seconds.
      Not tainted 6.6.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:11    state:D stack:23488 pid:10774 ppid:2      flags:0x00004000
Workqueue: events console_callback

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0xc79/0x30a0 kernel/sched/core.c:6695
 schedule+0xe7/0x1b0 kernel/sched/core.c:6771
 schedule_timeout+0x278/0x2c0 kernel/time/timer.c:2143
 ___down_common kernel/locking/semaphore.c:225 [inline]
 __down_common+0x327/0x6c0 kernel/locking/semaphore.c:246
 down+0x74/0xa0 kernel/locking/semaphore.c:63
 console_lock+0x96/0x150 kernel/printk/printk.c:2652
 console_callback+0x63/0x4c0 drivers/tty/vt/vt.c:2933
 process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
 kthread+0x33c/0x440 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffffffff87eac820 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
 #0: ffffffff87eac820 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
 #0: ffffffff87eac820 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6613
2 locks held by getty/2443:
 #0: 
ffff88810b77b0a0
 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc900000432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}
, at: n_tty_read+0xfc5/0x1480 drivers/tty/n_tty.c:2206
3 locks held by kworker/0:4/5301:
2 locks held by kworker/1:5/5315:
5 locks held by kworker/1:11/10390:
 #0: ffff88810a669138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
 #1: ffffc9000d55fd80 ((work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606
 #2: ffff888105fa7190
 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f30 drivers/usb/core/hub.c:5768
 #3: ffff888116173190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
 #3: ffff888116173190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #4: ffff88814396b160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
 #4: ffff88814396b160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
2 locks held by kworker/0:11/10774:
 #0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
 #1: ffffc9000163fd80 (console_work){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606
4 locks held by udevd/11014:
 #0: ffff8881414fc9e0
 (
&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xda/0x1280 fs/seq_file.c:182
 #1: ffff88810cfb0888
 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4b/0x460 fs/kernfs/file.c:154
 #2: ffff88811d809918
 (kn->active#18
){++++}-{0:0}
, at: kernfs_seq_start+0x6f/0x460 fs/kernfs/file.c:155
 #3: ffff888116173190 (&dev->mutex){....}-{3:3}
, at: device_lock_interruptible include/linux/device.h:997 [inline]
, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
4 locks held by udevd/11753:
 #0: ffff88811cafa418
 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xda/0x1280 fs/seq_file.c:182
 #1: ffff888102e84c88
 (
&of->mutex
){+.+.}-{3:3}, at: kernfs_seq_start+0x4b/0x460 fs/kernfs/file.c:154
 #2: ffff888108256da0 (kn->active#18){++++}-{0:0}
, at: kernfs_seq_start+0x6f/0x460 fs/kernfs/file.c:155
 #3: ffff8881066e1190 (&dev->mutex){....}-{3:3}
, at: device_lock_interruptible include/linux/device.h:997 [inline]
, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
6 locks held by kworker/1:14/12070:
 #0: ffff88810a669138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}
, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
 #1: ffffc9000f387d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606
 #2: ffff88810633f190 (&dev->mutex
){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
){....}-{3:3}, at: hub_event+0x1be/0x4f30 drivers/usb/core/hub.c:5768
 #3: ffff88814251d190
 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x890 drivers/usb/core/hub.c:2243
 #4: 
ffff88811bfa0160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
ffff88811bfa0160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
ffff88811bfa0160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292
 #5: ffff888101657948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_find_and_get_ns+0x71/0xc0 fs/kernfs/dir.c:897
7 locks held by kworker/0:12/12408:
6 locks held by kworker/0:13/12802:
6 locks held by kworker/1:16/13143:
1 lock held by syz-executor.4/14147:
 #0: 
ffff888101657948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_add_one+0xb1/0x510 fs/kernfs/dir.c:757
1 lock held by syz-executor.1/14148:
 #0: ffff888101657948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_add_one+0xb1/0x510 fs/kernfs/dir.c:757

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x26c/0x2d0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xf87/0x1210 kernel/hung_task.c:379
 kthread+0x33c/0x440 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 10369 Comm: kworker/1:10 Not tainted 6.6.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Workqueue: events legacy_dvb_usb_read_remote_control
RIP: 0010:__virt_addr_valid+0x0/0x2d0 arch/x86/mm/physaddr.c:48
Code: 3c 10 00 75 13 48 8b 05 6e ad b7 06 48 01 d8 5b c3 e8 84 e0 38 00 0f 0b 48 c7 c7 10 40 cc 87 e8 46 4d 85 00 eb df 0f 1f 40 00 <f3> 0f 1e fa 41 55 41 54 45 31 e4 55 bd 00 00 00 80 53 48 89 fb e8
RSP: 0018:ffffc90000198bb0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88814008f8d0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88814008f8d0
RBP: 0000000000000005 R08: 0000000000000000 R09: fffffbfff181fc63
R10: ffffc90000198be8 R11: 000000000000ac0f R12: ffff88814008f8d0
R13: ffff888100a50400 R14: ffff8881f673ad60 R15: 00000001000151ed
FS:  0000000000000000(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa0e8811000 CR3: 000000013fa3c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 kasan_addr_to_slab+0xd/0x80 mm/kasan/common.c:35
 __kasan_record_aux_stack+0xe/0xb0 mm/kasan/generic.c:477
 insert_work+0x38/0x230 kernel/workqueue.c:1647
 __queue_work+0x5d0/0x1050 kernel/workqueue.c:1799
 call_timer_fn+0x19e/0x580 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1746 [inline]
 __run_timers+0x585/0xb10 kernel/time/timer.c:2022
 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
 __do_softirq+0x20b/0x94e kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0xa7/0x110 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x8e/0xb0 arch/x86/kernel/apic/apic.c:1074
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1979 [inline]
RIP: 0010:vprintk_emit+0x3aa/0x5f0 kernel/printk/printk.c:2306
Code: 00 4d 85 e4 0f 85 e4 01 00 00 e8 11 20 1c 00 9c 5d 81 e5 00 02 00 00 31 ff 48 89 ee e8 8f 1b 1c 00 48 85 ed 0f 85 f0 01 00 00 <e8> f1 1f 1c 00 45 31 c9 41 b8 01 00 00 00 31 c9 48 8d 05 00 00 00
RSP: 0018:ffffc9000d507ac0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000017 RCX: 0000000000000000
RDX: ffff888105b99d00 RSI: ffffffff81315524 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 65725f783032396d R12: 0000000000000200
R13: ffff888103665700 R14: ffffffff8710a520 R15: ffffc9000d507b40
 vprintk+0x7b/0x90 kernel/printk/printk_safe.c:45
 _printk+0xc8/0x100 kernel/printk/printk.c:2332
 m920x_read drivers/media/usb/dvb-usb/m920x.c:40 [inline]
 m920x_rc_query+0x496/0x760 drivers/media/usb/dvb-usb/m920x.c:193
 legacy_dvb_usb_read_remote_control+0x107/0x4f0 drivers/media/usb/dvb-usb/dvb-usb-remote.c:123
 process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
 kthread+0x33c/0x440 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>