INFO: task kworker/0:0:8 blocked for more than 143 seconds.
      Not tainted 6.13.0-rc7-syzkaller-g70cd0576aa39 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:0     state:D stack:22440 pid:8     tgid:8     ppid:2      flags:0x00004000
Workqueue: events console_callback

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x102c/0x34b0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6848
 schedule_timeout+0x244/0x280 kernel/time/sleep_timeout.c:75
 ___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:2833
 console_callback+0x63/0x4c0 drivers/tty/vt/vt.c:3120
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 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:
2 locks held by kworker/0:0/8:
 #0: ffff888100080948
 ((wq_completion)events
){+.+.}-{0:0}
, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3211
 #1: ffffc9000008fd80
 (console_work){+.+.}-{0:0}
, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3212
1 lock held by khungtaskd/30:
 #0: ffffffff88ebc880 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff88ebc880 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff88ebc880 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6744
2 locks held by getty/2902:
 #0: ffff8881121c10a0
 (
&tty->ldisc_sem){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc900000432f0 (&ldata->atomic_read_lock
){+.+.}-{4:4}
, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
3 locks held by syz-executor/2961:
4 locks held by udevd/5230:
6 locks held by kworker/0:3/5233:
4 locks held by kworker/1:4/5237:
3 locks held by kworker/1:9/10354:
4 locks held by kworker/0:12/10897:
3 locks held by kworker/1:11/11415:
6 locks held by kworker/0:14/11672:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc7-syzkaller-g70cd0576aa39 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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:234 [inline]
 watchdog+0xf14/0x1240 kernel/hung_task.c:397
 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: 5237 Comm: kworker/1:4 Not tainted 6.13.0-rc7-syzkaller-g70cd0576aa39 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: events legacy_dvb_usb_read_remote_control
RIP: 0010:trace_lock_acquire+0x4/0x1f0 include/trace/events/lock.h:24
Code: cc cc 31 d2 4c 89 cf e8 9a c2 18 00 48 89 c6 eb aa e8 e0 c0 b9 05 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 56 41 55 <55> 53 48 83 ec 18 66 90 49 c7 c5 4c c0 03 00 65 41 8b 5d 00 83 fb
RSP: 0018:ffffc900021af7d8 EFLAGS: 00000092
RAX: 0000000000000002 RBX: ffffffff813b093d RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88dc9b58
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 205d373332355420 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5d2f617bac CR3: 000000011f638000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 lock_acquire+0x2f/0xb0 kernel/locking/lockdep.c:5820
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 console_lock_spinning_enable+0x6d/0xd0 kernel/printk/printk.c:1918
 console_emit_next_record kernel/printk/printk.c:3116 [inline]
 console_flush_all+0x7ac/0xc60 kernel/printk/printk.c:3210
 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
 console_unlock+0xd9/0x210 kernel/printk/printk.c:3309
 vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432
 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:86
 _printk+0xc8/0x100 kernel/printk/printk.c:2457
 m920x_read drivers/media/usb/dvb-usb/m920x.c:40 [inline]
 m920x_rc_query+0x496/0x770 drivers/media/usb/dvb-usb/m920x.c:193
 legacy_dvb_usb_read_remote_control+0x10a/0x500 drivers/media/usb/dvb-usb/dvb-usb-remote.c:123
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 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>