INFO: task kworker/0:0:8 blocked for more than 143 seconds.
      Not tainted 6.11.0-rc1-syzkaller-00033-g25f51b76f90f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:0     state:D
 stack:21216 pid:8     tgid:8     ppid:2      flags:0x00004000
Workqueue: usb_hub_wq hub_event

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0xcda/0x2f80 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6621
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
 rwsem_down_write_slowpath+0x539/0x12a0 kernel/locking/rwsem.c:1178
 __down_write_common kernel/locking/rwsem.c:1306 [inline]
 __down_write kernel/locking/rwsem.c:1315 [inline]
 down_write+0x1d8/0x200 kernel/locking/rwsem.c:1580
 kernfs_add_one+0xb1/0x520 fs/kernfs/dir.c:778
 kernfs_create_dir_ns+0xf4/0x150 fs/kernfs/dir.c:1071
 sysfs_create_dir_ns+0x13b/0x2b0 fs/sysfs/dir.c:59
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x2c8/0x990 lib/kobject.c:240
 kobject_add_varg lib/kobject.c:374 [inline]
 kobject_add+0x16f/0x240 lib/kobject.c:426
 device_add+0x289/0x1a70 drivers/base/core.c:3617
 usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2651
 hub_port_connect drivers/usb/core/hub.c:5521 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 port_event drivers/usb/core/hub.c:5821 [inline]
 hub_event+0x2e66/0x4f50 drivers/usb/core/hub.c:5903
 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
 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/0:0/8:
1 lock held by khungtaskd/30:
 #0: ffffffff88cb68a0
 (rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6620
5 locks held by kworker/1:1H/43:
 #0: 
ffff8881f633d758
 (&rq->__lock
){-.-.}-{2:2}
, at: raw_spin_rq_lock_nested kernel/sched/core.c:560 [inline]
, at: raw_spin_rq_lock kernel/sched/sched.h:1415 [inline]
, at: rq_lock kernel/sched/sched.h:1714 [inline]
, at: __schedule+0x28e/0x2f80 kernel/sched/core.c:6436
 #1: 
ffffc900004e7d80 (
(work_completion)(&(&hctx->run_work)->work)
){+.+.}-{0:0}
, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
 #2: 
ffffffff88cb68a0
 (
rcu_read_lock){....}-{1:2}
, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
, at: blk_mq_run_work_fn+0x1c7/0x380 block/blk-mq.c:2415
 #3: 
ffffffff88ce3088 (
tk_core.seq.seqcount
){----}-{0:0}
, at: timekeeping_get_ns kernel/time/timekeeping.c:401 [inline]
, at: ktime_get+0xd9/0x1a0 kernel/time/timekeeping.c:850
 #4: ffffffff88ce3088
 (
tk_core.seq.seqcount
){----}-{0:0}
, at: timekeeping_get_ns kernel/time/timekeeping.c:401 [inline]
, at: ktime_get_update_offsets_now+0x100/0x310 kernel/time/timekeeping.c:2449
2 locks held by kworker/u8:5/278:
 #0: 
ffff888100089148 (
(wq_completion)events_unbound
){+.+.}-{0:0}
, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
 #1: 
ffffc900015afd80
 (
(work_completion)(&sub_info->work)){+.+.}-{0:0}
, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
1 lock held by udevd/2545:
 #0: ffff888100abc148
 (&root->kernfs_rwsem
){++++}-{3:3}
, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
2 locks held by getty/2603:
 #0: 
ffff888100ea60a0
 (&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+0xfc8/0x1490 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/2646:
 #0: 
ffff888100abc148
 (&root->kernfs_rwsem
){++++}-{3:3}
, at: kernfs_dop_revalidate+0x39e/0x5a0 fs/kernfs/dir.c:1141
1 lock held by syz-executor/2648:
 #0: ffff888100abc148
 (
&root->kernfs_rwsem
){++++}-{3:3}
, at: kernfs_dop_revalidate+0x39e/0x5a0 fs/kernfs/dir.c:1141
1 lock held by syz-executor/2649:
 #0: ffff888100abc148
 (
&root->kernfs_rwsem
){++++}-{3:3}
, at: kernfs_dop_revalidate+0x39e/0x5a0 fs/kernfs/dir.c:1141
1 lock held by syz-executor/2651:
 #0: 
ffff888100abc148
 (
&root->kernfs_rwsem
){++++}-{3:3}
, at: kernfs_dop_revalidate+0x39e/0x5a0 fs/kernfs/dir.c:1141
1 lock held by syz-executor/2654:
 #0: 
ffff888100abc148
 (
&root->kernfs_rwsem
){++++}-{3:3}
, at: kernfs_dop_revalidate+0x39e/0x5a0 fs/kernfs/dir.c:1141
3 locks held by kworker/0:4/4925:
6 locks held by kworker/1:4/4941:
5 locks held by kworker/1:6/5216:
4 locks held by udevd/5491:
 #0: 
ffff8881056d3790
 (&p->lock
){+.+.}-{3:3}
, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
 #1: ffff888112506488
 (
&of->mutex
#2
){+.+.}-{3:3}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: 
ffff88811752ef08 (
kn->active#18
){++++}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff888131470190
 (
&dev->mutex
){....}-{3:3}
, at: device_lock_interruptible include/linux/device.h:1014 [inline]
, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
4 locks held by kworker/1:0/8791:
 #0: 
ffff888105af4148
 (
(wq_completion)usb_hub_wq
){+.+.}-{0:0}
, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
 #1: 
ffffc9000f7c7d80
 ((work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
 #2: ffff888108f69190
 (&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: hub_event+0x1be/0x4f50 drivers/usb/core/hub.c:5849
 #3: ffff888100abc148
 (
&root->kernfs_rwsem
){++++}-{3:3}
, at: kernfs_activate fs/kernfs/dir.c:1403 [inline]
, at: kernfs_add_one+0x39d/0x520 fs/kernfs/dir.c:819
1 lock held by syz.0.1488/10144:
 #0: 
ffffffff88cc2038
 (
rcu_state.exp_mutex
){+.+.}-{3:3}
, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:296
1 lock held by syz.3.1489/10147:
 #0: 
ffffffff88cc2038 (
rcu_state.exp_mutex
){+.+.}-{3:3}
, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:328
1 lock held by syz-executor/10150:
 #0: 
ffff888100abc148
 (&root->kernfs_rwsem
){++++}-{3:3}
, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
1 lock held by syz-executor/10151:
 #0: 
ffff888100abc148
 (
&root->kernfs_rwsem){++++}-{3:3}
, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
1 lock held by syz-executor/10153:
 #0: ffff888100abc148
 (
&root->kernfs_rwsem
){++++}-{3:3}
, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
1 lock held by syz-executor/10154:
 #0: 
ffff888100abc148 (
&root->kernfs_rwsem){++++}-{3:3}
, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc1-syzkaller-00033-g25f51b76f90f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
 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+0xf4e/0x1280 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:
yealink 3-1:36.0: urb_ctl_callback - urb status -71
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5216 Comm: kworker/1:6 Not tainted 6.11.0-rc1-syzkaller-00033-g25f51b76f90f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: events_power_efficient gc_worker
RIP: 0010:wq_watchdog_touch+0xf0/0x1c0 kernel/workqueue.c:7542
Code: 94 30 00 4c 89 fb 49 c1 ec 02 31 ff 4c 29 f3 4c 01 e3 48 89 de e8 d0 8f 30 00 48 85 db 78 52 48 83 c4 08 5b 41 5c 41 5d 41 5e <41> 5f e9 89 94 30 00 e8 84 94 30 00 0f b6 1d 20 25 02 09 31 ff 89
RSP: 0000:ffffc900001b85d8 EFLAGS: 00000086
RAX: 0000000080010001 RBX: ffffffff8de06660 RCX: ffffffff8122cff0
RDX: ffff888109790000 RSI: 0000000000000000 RDI: 0000000000000007
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000c64 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff8dfc86c0 R14: ffffffff89166780 R15: 000000010000da00
FS:  0000000000000000(0000) GS:ffff8881f6300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f87b5ea6f98 CR3: 0000000008aa0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 touch_nmi_watchdog include/linux/nmi.h:151 [inline]
 serial8250_console_write+0xb5/0x1090 drivers/tty/serial/8250/8250_port.c:3347
 console_emit_next_record kernel/printk/printk.c:2983 [inline]
 console_flush_all+0x53c/0xd70 kernel/printk/printk.c:3049
 console_unlock+0xae/0x290 kernel/printk/printk.c:3118
 vprintk_emit kernel/printk/printk.c:2348 [inline]
 vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303
 dev_vprintk_emit drivers/base/core.c:4909 [inline]
 dev_printk_emit+0xfb/0x140 drivers/base/core.c:4920
 __dev_printk+0xf5/0x270 drivers/base/core.c:4932
 _dev_err+0xe5/0x120 drivers/base/core.c:4975
 urb_ctl_callback+0x1eb/0x2f0 drivers/input/misc/yealink.c:456
 __usb_hcd_giveback_urb+0x466/0x6e0 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
 dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1987
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x8b/0xb0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:queue_delayed_work_on+0x9d/0x150 kernel/workqueue.c:2559
Code: e8 e8 7d 31 00 48 85 ed 75 46 e8 ae 82 31 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 cc 7d 31 00 48 85 db 0f 85 92 00 00 00 <e8> 8e 82 31 00 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc
RSP: 0000:ffffc9000f967b90 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8121e23f
RDX: ffff888109790000 RSI: ffffffff8121e249 RDI: 0000000000000007
RBP: 0000000000000200 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffff888100081800 R14: 0000000000000000 R15: 0000000000000000
 queue_delayed_work include/linux/workqueue.h:636 [inline]
 gc_worker+0xe0e/0x1770 net/netfilter/nf_conntrack_core.c:1594
 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
 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>