INFO: task kworker/0:0:12312 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:22656 pid:12312 tgid:12312 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:
3 locks held by kworker/0:1/9:
 #0: 
ffff888100080948
 (
(wq_completion)events){+.+.}-{0:0}
, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3211
 #1: ffffc9000009fd80 (
(work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3212
 #2: ffff88810b726190 (&dev->mutex){....}-{4:4}
, at: device_lock include/linux/device.h:1014 [inline]
, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1161 [inline]
, at: ath9k_hif_usb_firmware_cb+0x3b1/0x620 drivers/net/wireless/ath/ath9k/hif_usb.c:1294
1 lock held by khungtaskd/30:
 #0: ffffffff88ebc880
 (rcu_read_lock){....}-{1:3}
, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6744
6 locks held by kworker/1:1/36:
6 locks held by kworker/1:2/2796:
 #0: ffff88810668f548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3211
 #1: ffffc9000503fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}
, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3212
 #2: ffff88810b37e190 (
&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline]
&dev->mutex){....}-{4:4}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5851
 #3: ffff888119660190
 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline]
 (&dev->mutex){....}-{4:4}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #4: ffff88811e35a160 (&dev->mutex){....}-{4:4}
, at: device_lock include/linux/device.h:1014 [inline]
, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #5: ffff8881145a9bd8 (&dev->ctrl_urb_lock){+.+.}-{4:4}, at: em28xx_write_regs_req+0x14c/0x410 drivers/media/usb/em28xx/em28xx-core.c:147
2 locks held by getty/2905:
 #0: ffff8881159110a0 (
&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
4 locks held by udevd/5211:
 #0: ffff88811a980d58
 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
 #1: ffff88811c71c488 (&of->mutex){+.+.}-{4:4}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff88811e5ffe18 (kn->active){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff888115105190 (&dev->mutex
){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline]
){....}-{4:4}, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2729
4 locks held by udevd/5221:
 #0: ffff88812ab29540 (&p->lock
){+.+.}-{4:4}
, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
 #1: ffff888116d72c88 (&of->mutex){+.+.}-{4:4}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff888111455968
 (kn->active){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff888119660190 (&dev->mutex){....}-{4:4}
, at: device_lock include/linux/device.h:1014 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2729
2 locks held by udevd/5240:
4 locks held by udevd/5247:
 #0: ffff88811297f418 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
 #1: ffff888114882488
 (&of->mutex){+.+.}-{4:4}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff8881147c2b48
 (kn->active){++++}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: 
ffff888119661190 (
&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline]
&dev->mutex){....}-{4:4}, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2729
5 locks held by kworker/1:5/5368:
 #0: ffff88810668f548
 ((wq_completion)usb_hub_wq){+.+.}-{0:0}
, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3211
 #1: 
ffffc9000248fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}
, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3212
 #2: ffff88810afc6190 (&dev->mutex){....}-{4:4}
, at: device_lock include/linux/device.h:1014 [inline]
, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5851
 #3: 
ffff888119661190 (&dev->mutex){....}-{4:4}
, at: device_lock include/linux/device.h:1014 [inline]
, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #4: ffff88813aa37160 (&dev->mutex){....}-{4:4}
, at: device_lock include/linux/device.h:1014 [inline]
, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
1 lock held by udevd/6195:
 #0: ffff888116796e88 (
&type->i_mutex_dir_key#5){++++}-{4:4}
, at: inode_lock_shared include/linux/fs.h:828 [inline]
, at: open_last_lookups fs/namei.c:3747 [inline]
, at: path_openat+0x88a/0x2d60 fs/namei.c:3984
5 locks held by kworker/1:8/9897:
2 locks held by kworker/0:0/12312:
 #0: ffff888100080948 (
(wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3211
 #1: ffffc90004a9fd80 (console_work){+.+.}-{0:0}
, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3212

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

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: 5650 Comm: kworker/1:6 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 dvb_usb_read_remote_control
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:26 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:87 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:147 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x2b/0x80 kernel/locking/spinlock.c:194
Code: 0f 1e fa 55 48 89 f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 86 d4 44 fa 48 89 df e8 de 53 45 fa f7 c5 00 02 00 00 75 23 9c <58> f6 c4 02 75 37 bf 01 00 00 00 e8 25 6d 39 fa 65 8b 05 66 54 10
RSP: 0018:ffffc900001b8a00 EFLAGS: 00000046
RAX: 0000000000000001 RBX: ffffffff9350bce0 RCX: ffffffff8138bff3
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffffff9350bce0
RBP: 0000000000000002 R08: 0000000000000000 R09: fffffbfff26a179c
R10: ffffffff9350bce3 R11: 0000000000000004 R12: 0000000000000002
R13: ffff88810afc4418 R14: 1ffff92000037148 R15: ffffffff9350bcd8
FS:  0000000000000000(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f00f6a30d58 CR3: 0000000117cda000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 debug_object_activate+0x2e6/0x4a0 lib/debugobjects.c:836
 debug_hrtimer_activate kernel/time/hrtimer.c:428 [inline]
 debug_activate kernel/time/hrtimer.c:469 [inline]
 enqueue_hrtimer+0x25/0x3c0 kernel/time/hrtimer.c:1076
 __hrtimer_start_range_ns kernel/time/hrtimer.c:1251 [inline]
 hrtimer_start_range_ns+0x800/0xc60 kernel/time/hrtimer.c:1293
 hrtimer_start include/linux/hrtimer.h:260 [inline]
 dummy_timer+0x290a/0x3960 drivers/usb/gadget/udc/dummy_hcd.c:2007
 __run_hrtimer kernel/time/hrtimer.c:1739 [inline]
 __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1803
 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1820
 handle_softirqs+0x206/0x8d0 kernel/softirq.c:561
 __do_softirq kernel/softirq.c:595 [inline]
 invoke_softirq kernel/softirq.c:435 [inline]
 __irq_exit_rcu+0xfa/0x160 kernel/softirq.c:662
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 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:2061 [inline]
RIP: 0010:vprintk_emit+0x621/0x6f0 kernel/printk/printk.c:2431
Code: 85 ed 0f 85 81 00 00 00 e8 2c 21 20 00 9c 41 5c 41 81 e4 00 02 00 00 31 ff 4c 89 e6 e8 48 1c 20 00 4d 85 e4 0f 85 8d 00 00 00 <e8> 0a 21 20 00 45 31 c9 41 b8 01 00 00 00 31 c9 48 8d 05 00 00 00
RSP: 0018:ffffc900125e7b10 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 000000000000003e RCX: ffffffff813b49de
RDX: ffff88811aa01d40 RSI: ffffffff813b49e8 RDI: 0000000000000007
RBP: 1ffff920024bcf64 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000200 R14: ffff8881026b1d40 R15: ffffc900125e7bf8
 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:86
 _printk+0xc8/0x100 kernel/printk/printk.c:2457
 dvb_usb_read_remote_control+0x174/0x1c0 drivers/media/usb/dvb-usb/dvb-usb-remote.c:263
 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>