INFO: task kworker/1:15:27525 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/1:15    state:D
 stack:23584 pid:27525 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:
5 locks held by kworker/1:1/26:
 #0: 
ffff88810ae65d38 (
(wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
 #1: ffffc900001c7d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606
 #2: ffff888106715190
 (&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: 
ffff8881067a0500 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3138 [inline]
ffff8881067a0500 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5337 [inline]
ffff8881067a0500 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5580 [inline]
ffff8881067a0500 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5740 [inline]
ffff8881067a0500 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x28b4/0x4f30 drivers/usb/core/hub.c:5822
 #4: ffff8881063bc968
 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5338 [inline]
 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5580 [inline]
 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5740 [inline]
 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x28da/0x4f30 drivers/usb/core/hub.c:5822
1 lock held by khungtaskd/29:
 #0: 
ffffffff87eac820 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
ffffffff87eac820 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
ffffffff87eac820 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6613
2 locks held by getty/2445:
 #0: ffff8881131520a0
 (&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/1:4/5298:
 #0: ffff88810ae65d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
 #1: 
ffffc9000236fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606
 #2: ffff888105fe6190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
 #2: ffff888105fe6190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f30 drivers/usb/core/hub.c:5768
6 locks held by kworker/0:5/5320:
5 locks held by kworker/1:10/8869:
 #0: ffff88810ae65d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}
, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
 #1: ffffc9000f8ffd80
 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606
 #2: ffff88810639d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
 #2: ffff88810639d190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f30 drivers/usb/core/hub.c:5768
 #3: ffff8881063f0500
 (&port_dev->status_lock){+.+.}-{3:3}
, at: usb_lock_port drivers/usb/core/hub.c:3138 [inline]
, at: hub_port_connect drivers/usb/core/hub.c:5337 [inline]
, at: hub_port_connect_change drivers/usb/core/hub.c:5580 [inline]
, at: port_event drivers/usb/core/hub.c:5740 [inline]
, at: hub_event+0x28b4/0x4f30 drivers/usb/core/hub.c:5822
 #4: 
ffff888102f87968
 (hcd->address0_mutex
){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5338 [inline]
){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5580 [inline]
){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5740 [inline]
){+.+.}-{3:3}, at: hub_event+0x28da/0x4f30 drivers/usb/core/hub.c:5822
4 locks held by kworker/1:14/17967:
3 locks held by kworker/0:14/25609:
2 locks held by kworker/1:15/27525:
 #0: ffff888100070d38
 ((wq_completion)events
){+.+.}-{0:0}
, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
 #1: ffffc9001097fd80
 (console_work
){+.+.}-{0:0}
, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606

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

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: 5242 Comm: kworker/1:2 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:update_idle_cpu_scan kernel/sched/fair.c:10236 [inline]
RIP: 0010:update_sd_lb_stats.constprop.0+0x1abe/0x3ad0 kernel/sched/fair.c:10362
Code: 08 84 d2 0f 85 5f 1a 00 00 c7 45 2c 02 00 00 00 be 01 00 00 00 48 89 ef 4c 89 0c 24 e8 db 71 fe ff 4c 8b 0c 24 e9 8a f4 ff ff <49> c7 c7 a8 87 02 00 49 83 fd 07 0f 87 bc 14 00 00 48 b8 00 00 00
RSP: 0018:ffffc90000198858 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000800 RCX: ffffffff8125f011
RDX: 1ffff1102034eea3 RSI: ffffc90000198d24 RDI: ffff888101a77518
RBP: 0000000000000002 R08: 0000000000000000 R09: ffffc90000198d10
R10: ffffffff89331e57 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff8881f6700000 R15: ffff888101a77400
FS:  0000000000000000(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbf685a2070 CR3: 000000010ff40000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 find_busiest_group+0x9a/0xc80 kernel/sched/fair.c:10584
 load_balance+0x562/0x2e30 kernel/sched/fair.c:11027
 rebalance_domains+0x705/0xee0 kernel/sched/fair.c:11465
 __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:ffffc900020cfac0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000017 RCX: 0000000000000000
RDX: ffff88810d700000 RSI: ffffffff81315524 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 65725f783032396d R12: 0000000000000200
R13: ffff888105640000 R14: ffffffff8710a520 R15: ffffc900020cfb40
 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>