INFO: task kworker/1:1:47 blocked for more than 143 seconds.
      Not tainted 6.12.0-rc6-syzkaller-00153-g237d4e0f4113 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:1     state:D stack:21152 pid:47    tgid:47    ppid:2      flags:0x00004000
Workqueue: events console_callback

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x1042/0x34b0 kernel/sched/core.c:6690
 __schedule_loop kernel/sched/core.c:6767 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6782
 schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2591
 ___down_common+0x2d7/0x460 kernel/locking/semaphore.c:225
 __down_common kernel/locking/semaphore.c:246 [inline]
 __down+0x20/0x30 kernel/locking/semaphore.c:254
 down+0x74/0xa0 kernel/locking/semaphore.c:63
 console_lock+0x5b/0xa0 kernel/printk/printk.c:2808
 console_callback+0x63/0x4c0 drivers/tty/vt/vt.c:3120
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff88ebb140
 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
2 locks held by kworker/1:1/47:
 #0: ffff888100080948 ((wq_completion)events){+.+.}-{0:0}
, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: ffffc90000527d80
 (console_work){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
2 locks held by getty/2920:
 #0: ffff888115be20a0
 (
&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+0xfba/0x1480 drivers/tty/n_tty.c:2211
5 locks held by kworker/1:2/5236:
3 locks held by kworker/0:5/5385:
3 locks held by syz-executor/6667:
3 locks held by syz-executor/6677:
4 locks held by udevd/8919:
 #0: 
ffff8881129d1668 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
 #1: 
ffff8881141f5088 (&of->mutex
#2){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff88810df0ff08 (
kn->active#3){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff888117f84190 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:1014 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2736
4 locks held by udevd/9000:
 #0: 
ffff8881129d1e80 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
 #1: ffff88813084f488 (
&of->mutex#2){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff888112d34f08 (kn->active#3
){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff888105fe9190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #3: ffff888105fe9190 (&dev->mutex){....}-{3:3}, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2736
4 locks held by kworker/1:3/11813:
6 locks held by kworker/1:8/14846:
 #0: ffff8881066ad148 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: ffffc9000155fd80
 (
(work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
 #2: 
ffff88810b763190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
ffff88810b763190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
 #3: ffff88810b766508
 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3206 [inline]
 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5418 [inline]
 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5821 [inline]
 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x28aa/0x4f40 drivers/usb/core/hub.c:5903
 #4: ffff88810975ce68 (hcd->address0_mutex
){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5419 [inline]
){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5821 [inline]
){+.+.}-{3:3}, at: hub_event+0x28d0/0x4f40 drivers/usb/core/hub.c:5903
 #5: ffffffff88ea8840 (
console_lock){+.+.}-{0:0}, at: raw_spin_rq_lock_nested kernel/sched/core.c:598 [inline]
console_lock){+.+.}-{0:0}, at: raw_spin_rq_lock kernel/sched/sched.h:1505 [inline]
console_lock){+.+.}-{0:0}, at: rq_lock kernel/sched/sched.h:1804 [inline]
console_lock){+.+.}-{0:0}, at: __schedule+0x293/0x34b0 kernel/sched/core.c:6589
4 locks held by kworker/0:4/17931:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc6-syzkaller-00153-g237d4e0f4113 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xf0c/0x1240 kernel/hung_task.c:379
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 16396 Comm: kworker/1:11 Not tainted 6.12.0-rc6-syzkaller-00153-g237d4e0f4113 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Workqueue: events dvb_usb_read_remote_control
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xc/0x70 kernel/kcov.c:217
Code: cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 48 8b 15 e4 d0 ad 7e <65> 8b 05 e5 d0 ad 7e a9 00 01 ff 00 48 8b 34 24 74 1d f6 c4 01 74
RSP: 0018:ffffc900001b8e28 EFLAGS: 00000086
RAX: ffff8881117d0000 RBX: 000001c5dc42e129 RCX: ffff8881f592c898
RDX: ffff8881117d0000 RSI: ffffffff81435cb8 RDI: ffff8881f592c8a8
RBP: 0000000000000000 R08: 0000000000000005 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881f592d0d8
R13: ffff8881f592c840 R14: ffff8881f592c7c0 R15: ffff8881f592c7c0
FS:  0000000000000000(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdbb1971000 CR3: 0000000108f8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 hrtimer_get_softexpires_tv64 include/linux/hrtimer.h:149 [inline]
 __hrtimer_run_queues+0x3e5/0xae0 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1817
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x8b/0xb0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2042 [inline]
RIP: 0010:vprintk_emit+0x621/0x6f0 kernel/printk/printk.c:2406
Code: 85 ed 0f 85 81 00 00 00 e8 0c 94 1f 00 9c 41 5c 41 81 e4 00 02 00 00 31 ff 4c 89 e6 e8 68 96 1f 00 4d 85 e4 0f 85 8d 00 00 00 <e8> ea 93 1f 00 45 31 c9 41 b8 01 00 00 00 31 c9 48 8d 05 00 00 00
RSP: 0018:ffffc900096dfad8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000017 RCX: ffffffff81365f9e
RDX: ffff8881117d0000 RSI: ffffffff81365fa8 RDI: 0000000000000007
RBP: 1ffff920012dbf5d R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000200 R14: ffff8881022b1d40 R15: ffffc900096dfbc0
 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68
 _printk+0xc8/0x100 kernel/printk/printk.c:2432
 m920x_read drivers/media/usb/dvb-usb/m920x.c:40 [inline]
 m920x_rc_core_query+0x2d7/0x500 drivers/media/usb/dvb-usb/m920x.c:229
 dvb_usb_read_remote_control+0xda/0x1c0 drivers/media/usb/dvb-usb/dvb-usb-remote.c:261
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>