Extracting prog: 12m45.632788654s
Minimizing prog: 19m48.63516622s
Simplifying prog options: 14m56.01495968s
Extracting C: 3m20.226956759s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000eafa7240936901b0293df400100109021b000124a800800904000001030000000905", @ANYRES64], 0x0)

program did not crash
program crashed: INFO: rcu detected stall in corrupted
single: successfully extracted reproducer
found reproducer with 1 syscalls
minimizing guilty program
testing program (duration=9m0.894946488s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, 0x0, 0x0)

program did not crash
testing program (duration=9m0.894946488s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB, @ANYRES64], 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=9m0.894946488s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: INFO: task hung in __input_unregister_device
a never seen crash title: INFO: task hung in __input_unregister_device, ignore
simplifying guilty program options
testing program (duration=9m0.894946488s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000eafa7240936901b0293df400100109021b000124a800800904000001030000000905", @ANYRES64], 0x0)

program crashed: INFO: task hung in fqdir_free_fn
a never seen crash title: INFO: task hung in fqdir_free_fn, ignore
testing program (duration=9m0.894946488s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000eafa7240936901b0293df400100109021b000124a800800904000001030000000905", @ANYRES64], 0x0)

program did not crash
testing program (duration=9m0.894946488s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000eafa7240936901b0293df400100109021b000124a800800904000001030000000905", @ANYRES64], 0x0)

program crashed: INFO: task hung in corrupted
validation run: crashed=true
testing program (duration=9m0.894946488s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000eafa7240936901b0293df400100109021b000124a800800904000001030000000905", @ANYRES64], 0x0)

program crashed: INFO: task hung in usb_new_device
validation run: crashed=true
testing program (duration=9m0.894946488s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000eafa7240936901b0293df400100109021b000124a800800904000001030000000905", @ANYRES64], 0x0)

program crashed: INFO: task hung in __input_unregister_device
validation run: crashed=true
reproducing took 1h6m50.437415416s
repro crashed as (corrupted=false):
INFO: task kworker/0:5:6150 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:5     state:D
 stack:22704 pid:6150  tgid:6150  ppid:2      task_flags:0x4288060 flags:0x00080000
Workqueue: usb_hub_wq hub_event

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x149b/0x4fd0 kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6960
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017
 __mutex_lock_common kernel/locking/mutex.c:692 [inline]
 __mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:776
 class_mutex_constructor include/linux/mutex.h:253 [inline]
 __input_unregister_device+0x328/0x640 drivers/input/input.c:2187
 input_unregister_device+0x9b/0x100 drivers/input/input.c:2418
 usb_cleanup+0x7c/0x1e0 drivers/input/misc/yealink.c:793
 usb_disconnect+0x42/0x70 drivers/input/misc/yealink.c:811
 usb_unbind_interface+0x26e/0x910 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:571 [inline]
 __device_release_driver drivers/base/dd.c:1282 [inline]
 device_release_driver_internal+0x4d9/0x800 drivers/base/dd.c:1305
 bus_remove_device+0x34d/0x440 drivers/base/bus.c:616
 device_del+0x511/0x8e0 drivers/base/core.c:3878
 usb_disable_device+0x3d4/0x8e0 drivers/usb/core/message.c:1418
 usb_disconnect+0x32f/0x990 drivers/usb/core/hub.c:2345
 hub_port_connect drivers/usb/core/hub.c:5407 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
 port_event drivers/usb/core/hub.c:5871 [inline]
 hub_event+0x1ca9/0x4ef0 drivers/usb/core/hub.c:5953
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>

Showing all locks held in the system:
7 locks held by kworker/1:1/30:
1 lock held by khungtaskd/32:
 #0: ffffffff8df41aa0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #0: ffffffff8df41aa0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
 #0: ffffffff8df41aa0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
3 locks held by kworker/u8:4/63:
 #0: ffff88813ff29948
 (
(wq_completion)events_unbound
#2
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3232 [inline]
, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
 #1: 
ffffc9000212fbc0
 ((linkwatch_work).work
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3233 [inline]
, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
 #2: 
ffffffff8f312048
 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:303
5 locks held by kworker/1:2/906:
2 locks held by getty/5586:
 #0: ffff88814d31f0a0
 (&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x449/0x1460 drivers/tty/n_tty.c:2211
4 locks held by udevd/5896:
 #0: 
ffff888026b81418 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xb7/0xe20 fs/seq_file.c:182
 #1: 
ffff888058e2bc88 (
&of->mutex#2
){+.+.}-{4:4}
, at: kernfs_seq_start+0x5c/0x420 fs/kernfs/file.c:172
 #2: 
ffff8880759715a8
 (
kn->active#19
){.+.+}-{0:0}
, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
, at: kernfs_seq_start+0xb2/0x420 fs/kernfs/file.c:173
 #3: 
ffff888030270198 (&dev->mutex){....}-{4:4}, at: device_lock_interruptible include/linux/device.h:900 [inline]
ffff888030270198 (&dev->mutex){....}-{4:4}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
5 locks held by kworker/1:3/5897:
 #0: ffff888142a8a948 ((wq_completion)usb_hub_wq
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3232 [inline]
, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
 #1: ffffc900041a7bc0
 (
(work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3233 [inline]
, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
 #2: 
ffff888143b2d198
 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline]
 (&dev->mutex){....}-{4:4}, at: hub_event+0x187/0x4ef0 drivers/usb/core/hub.c:5899
 #3: ffff88802fd0f198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline]
 #3: ffff88802fd0f198 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x430 drivers/base/dd.c:1006
 #4: ffff88801b280188
 (
&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
3 locks held by kworker/1:4/5981:
2 locks held by syz-executor/5985:
 #0: 
ffffffff8f312048
 (
rtnl_mutex
){+.+.}-{4:4}
, at: tun_detach drivers/net/tun.c:634 [inline]
, at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3436
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_remove_by_name_ns+0x3d/0x130 fs/kernfs/dir.c:1717
1 lock held by syz-executor/5988:
 #0: 
ffffffff8f312048
 (
rtnl_mutex
){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:634 [inline]
){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3436
4 locks held by udevd/5991:
 #0: 
ffff88801eb53e80
 (
&p->lock
){+.+.}-{4:4}
, at: seq_read_iter+0xb7/0xe20 fs/seq_file.c:182
 #1: 
ffff8880322ea488
 (&of->mutex#2
){+.+.}-{4:4}
, at: kernfs_seq_start+0x5c/0x420 fs/kernfs/file.c:172
 #2: 
ffff888030225788
 (
kn->active
#19
){.+.+}-{0:0}
, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
, at: kernfs_seq_start+0xb2/0x420 fs/kernfs/file.c:173
 #3: 
ffff88805abf6198
 (
&dev->mutex
){....}-{4:4}
, at: device_lock_interruptible include/linux/device.h:900 [inline]
, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
1 lock held by syz-executor/5994:
 #0: 
ffffffff8f312048
 (
rtnl_mutex
){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:634 [inline]
){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3436
1 lock held by syz-executor/5997:
 #0: 
ffffffff8f312048
 (
rtnl_mutex
){+.+.}-{4:4}
, at: tun_detach drivers/net/tun.c:634 [inline]
, at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3436
1 lock held by syz-executor/5998:
 #0: 
ffffffff8f312048 (
rtnl_mutex
){+.+.}-{4:4}
, at: tun_detach drivers/net/tun.c:634 [inline]
, at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3436
4 locks held by udevd/6003:
 #0: ffff888033e5de80 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xb7/0xe20 fs/seq_file.c:182
 #1: 
ffff888024280488
 (
&of->mutex
#2
){+.+.}-{4:4}
, at: kernfs_seq_start+0x5c/0x420 fs/kernfs/file.c:172
 #2: ffff888056f371e8
 (
kn->active
#19
){.+.+}-{0:0}
, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
, at: kernfs_seq_start+0xb2/0x420 fs/kernfs/file.c:173
 #3: 
ffff88802fd0f198
 (
&dev->mutex){....}-{4:4}
, at: device_lock_interruptible include/linux/device.h:900 [inline]
, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
1 lock held by syz-executor/6005:
 #0: ffff88801b280188 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_find_and_get_ns+0x34/0xe0 fs/kernfs/dir.c:938
3 locks held by kworker/u8:3/6015:
 #0: ffff88814cbd6948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline]
 #0: ffff88814cbd6948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
 #1: 
ffffc90003c67bc0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline]
ffffc90003c67bc0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
 #2: 
ffffffff8f312048
 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4734
1 lock held by kworker/R-wg-cr/6023:
 #0: ffffffff8dde7dc8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2730 [inline]
 #0: ffffffff8dde7dc8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x518/0xed0 kernel/workqueue.c:3560
1 lock held by kworker/R-wg-cr/6025:
 #0: 
ffffffff8dde7dc8
 (
wq_pool_attach_mutex
){+.+.}-{4:4}
, at: worker_attach_to_pool+0x2e/0x3a0 kernel/workqueue.c:2672
1 lock held by kworker/R-wg-cr/6026:
 #0: 
ffffffff8dde7dc8
 (
wq_pool_attach_mutex
){+.+.}-{4:4}
, at: worker_detach_from_pool kernel/workqueue.c:2730 [inline]
, at: rescuer_thread+0x518/0xed0 kernel/workqueue.c:3560
7 locks held by kworker/R-wg-cr/6028:
1 lock held by kworker/R-wg-cr/6030:
 #0: 
ffffffff8dde7dc8
 (wq_pool_attach_mutex){+.+.}-{4:4}
, at: worker_attach_to_pool+0x2e/0x3a0 kernel/workqueue.c:2672
2 locks held by kworker/R-wg-cr/6031:
1 lock held by kworker/R-wg-cr/6034:
 #0: ffffffff8dde7dc8
 (wq_pool_attach_mutex
){+.+.}-{4:4}
, at: worker_detach_from_pool kernel/workqueue.c:2730 [inline]
, at: rescuer_thread+0x518/0xed0 kernel/workqueue.c:3560
1 lock held by kworker/R-wg-cr/6036:
 #0: ffffffff8dde7dc8
 (
wq_pool_attach_mutex
){+.+.}-{4:4}
, at: worker_detach_from_pool kernel/workqueue.c:2730 [inline]
, at: rescuer_thread+0x518/0xed0 kernel/workqueue.c:3560
1 lock held by kworker/R-wg-cr/6037:
 #0: 
ffffffff8dde7dc8
 (
wq_pool_attach_mutex
){+.+.}-{4:4}
, at: worker_attach_to_pool+0x2e/0x3a0 kernel/workqueue.c:2672
1 lock held by kworker/R-wg-cr/6039:
1 lock held by kworker/R-wg-cr/6040:
 #0: ffffffff8dde7dc8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2730 [inline]
 #0: ffffffff8dde7dc8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x518/0xed0 kernel/workqueue.c:3560
1 lock held by kworker/R-wg-cr/6041:
 #0: ffffffff8dde7dc8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2730 [inline]
 #0: ffffffff8dde7dc8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x518/0xed0 kernel/workqueue.c:3560
2 locks held by kworker/R-wg-cr/6042:
2 locks held by kworker/R-wg-cr/6044:
1 lock held by kworker/R-wg-cr/6045:
 #0: 
ffffffff8dde7dc8
 (
wq_pool_attach_mutex
){+.+.}-{4:4}
, at: worker_detach_from_pool kernel/workqueue.c:2730 [inline]
, at: rescuer_thread+0x518/0xed0 kernel/workqueue.c:3560
5 locks held by kworker/1:6/6095:
3 locks held by kworker/1:7/6099:
6 locks held by kworker/0:5/6150:
 #0: ffff888142a8a948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline]
 #0: ffff888142a8a948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
 #1: 
ffffc9000390fbc0
 ((work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3233 [inline]
, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
 #2: ffff888027f8a198
 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline]
 (&dev->mutex){....}-{4:4}, at: hub_event+0x187/0x4ef0 drivers/usb/core/hub.c:5899
 #3: ffff888055edf198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline]
 #3: ffff888055edf198 (&dev->mutex){....}-{4:4}, at: usb_disconnect+0xf8/0x990 drivers/usb/core/hub.c:2336
 #4: 
ffff888079e0b160
 (&dev->mutex
){....}-{4:4}
, at: device_lock include/linux/device.h:895 [inline]
, at: __device_driver_lock drivers/base/dd.c:1104 [inline]
, at: device_release_driver_internal+0xb6/0x800 drivers/base/dd.c:1302
 #5: 
ffffffff8ed98208
 (
input_mutex
){+.+.}-{4:4}
, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
, at: __input_unregister_device+0x328/0x640 drivers/input/input.c:2187
6 locks held by kworker/1:8/6164:
 #0: 
ffff888142a8a948
 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline]
 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
 #1: ffffc90003cb7bc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline]
 #1: ffffc90003cb7bc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
 #2: ffff888143b1c198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline]
 #2: ffff888143b1c198 (&dev->mutex){....}-{4:4}, at: hub_event+0x187/0x4ef0 drivers/usb/core/hub.c:5899
 #3: ffff888030270198
 (
&dev->mutex
){....}-{4:4}
, at: device_lock include/linux/device.h:895 [inline]
, at: __device_attach+0x88/0x430 drivers/base/dd.c:1006
 #4: 
ffff88807bfc1160
 (
&dev->mutex
){....}-{4:4}
, at: device_lock include/linux/device.h:895 [inline]
, at: __device_attach+0x88/0x430 drivers/base/dd.c:1006
 #5: 
ffffffff8ed98208 (
input_mutex){+.+.}-{4:4}, at: class_mutex_intr_constructor include/linux/mutex.h:255 [inline]
input_mutex){+.+.}-{4:4}, at: input_register_device+0xa76/0x1170 drivers/input/input.c:2374
2 locks held by kworker/1:9/6172:
2 locks held by kworker/1:10/6175:
2 locks held by kworker/1:11/6176:
4 locks held by udevd/6177:
 #0: 
ffff88802fb0eb08
 (
&p->lock
){+.+.}-{4:4}
, at: seq_read_iter+0xb7/0xe20 fs/seq_file.c:182
 #1: ffff8880330b6088 (&of->mutex
#2){+.+.}-{4:4}, at: kernfs_seq_start+0x5c/0x420 fs/kernfs/file.c:172
 #2: 
ffff8880327afe18
 (
kn->active
#19
){.+.+}-{0:0}
, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
, at: kernfs_seq_start+0xb2/0x420 fs/kernfs/file.c:173
 #3: ffff888055edf198 (&dev->mutex){....}-{4:4}, at: device_lock_interruptible include/linux/device.h:900 [inline]
 #3: ffff888055edf198 (&dev->mutex){....}-{4:4}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
3 locks held by kworker/1:12/6185:
 #0: 
ffff88813ff12948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline]
ffff88813ff12948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
 #1: ffffc90003df7bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline]
 #1: ffffc90003df7bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
 #2: ffffffff8f312048 (rtnl_mutex){+.+.}-{4:4}
, at: reg_check_chans_work+0xa1/0xf00 net/wireless/reg.c:2453
4 locks held by udevd/6194:
 #0: 
ffff88807c6b8790
 (
&p->lock
){+.+.}-{4:4}
, at: seq_read_iter+0xb7/0xe20 fs/seq_file.c:182
 #1: ffff8880737e5088
 (
&of->mutex#2){+.+.}-{4:4}
, at: kernfs_seq_start+0x5c/0x420 fs/kernfs/file.c:172
 #2: 
ffff88807e4a8008
 (
kn->active
#19){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
#19){.+.+}-{0:0}, at: kernfs_seq_start+0xb2/0x420 fs/kernfs/file.c:173
 #3: ffff88802fd0c198
 (&dev->mutex){....}-{4:4}
, at: device_lock_interruptible include/linux/device.h:900 [inline]
, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
1 lock held by udevd/6227:
 #0: ffff88801b280188 (&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_dop_revalidate+0x9e/0x5d0 fs/kernfs/dir.c:1185
1 lock held by syz-executor/6232:
 #0: 
ffffffff8f312048
 (
rtnl_mutex
){+.+.}-{4:4}
, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
, at: inet_rtm_newaddr+0x3b0/0x18b0 net/ipv4/devinet.c:978
1 lock held by syz-executor/6234:
 #0: 
ffffffff8f312048
 (
rtnl_mutex
){+.+.}-{4:4}
, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
, at: inet_rtm_newaddr+0x3b0/0x18b0 net/ipv4/devinet.c:978
1 lock held by syz-executor/6237:
 #0: ffffffff8f312048 (
rtnl_mutex
){+.+.}-{4:4}
, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
, at: inet_rtm_newaddr+0x3b0/0x18b0 net/ipv4/devinet.c:978
1 lock held by syz-executor/6238:
 #0: 
ffffffff8f312048
 (
rtnl_mutex
){+.+.}-{4:4}
, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
, at: inet_rtm_newaddr+0x3b0/0x18b0 net/ipv4/devinet.c:978
1 lock held by syz-executor/6240:
 #0: 
ffffffff8f312048
 (
rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0 net/ipv4/devinet.c:978
1 lock held by syz-executor/6241:
 #0: ffffffff8f312048
 (
rtnl_mutex
){+.+.}-{4:4}
, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
, at: inet_rtm_newaddr+0x3b0/0x18b0 net/ipv4/devinet.c:978
2 locks held by kworker/1:16/6260:
2 locks held by syz-executor/6268:
 #0: 
ffff888027b55118
 (&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188 (&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6269:
 #0: ffff888022788118
 (&data->open_mutex){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6270:
 #0: 
ffff88807b46f918
 (
&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6271:
 #0: 
ffff88807b46b918
 (
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6272:
 #0: ffff88807b468918
 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6273:
 #0: 
ffff888028aa9918
 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6285:
 #0: 
ffff888033df5118
 (
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6286:
 #0: 
ffff888033df6918
 (
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem
){++++}-{4:4}, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6288:
 #0: ffff88805b477118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6289:
 #0: 
ffff88805b473118
 (
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6290:
 #0: ffff8880554ac918
 (
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6291:
 #0: 
ffff88807b8d8918
 (
&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: ffff88801b280188 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 32 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x135/0x170 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]
 watchdog+0xf95/0xfe0 kernel/hung_task.c:515
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
yealink 2-1:36.0: unexpected response 0
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6043 Comm: kworker/R-wg-cr Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: wg-crypt-wg2 wg_packet_tx_worker
RIP: 0010:io_serial_out+0x7c/0xc0 drivers/tty/serial/8250/8250_port.c:407
Code: db a6 fc 44 89 f9 d3 e5 49 83 c6 40 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 2c fb 0c fd 41 03 2e 89 d8 89 ea ee <5b> 41 5c 41 5e 41 5f 5d e9 e2 23 f6 fb cc 44 89 f9 80 e1 07 38 c1
RSP: 0018:ffffc90000a082d0 EFLAGS: 00000002
RAX: 000000000000005d RBX: 000000000000005d RCX: 0000000000000000
RDX: 00000000000003f8 RSI: 0000000000000000 RDI: 0000000000000020
RBP: 00000000000003f8 R08: ffff888024360237 R09: 1ffff1100486c046
R10: dffffc0000000000 R11: ffffffff851a1ca0 R12: dffffc0000000000
R13: ffffffff998f59ee R14: ffffffff99c0a2c0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888125f1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33263fff CR3: 0000000056fa8000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 serial_port_out include/linux/serial_core.h:811 [inline]
 serial8250_console_putchar drivers/tty/serial/8250/8250_port.c:3192 [inline]
 serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:-1 [inline]
 serial8250_console_write+0x13c5/0x1b60 drivers/tty/serial/8250/8250_port.c:3342
 console_emit_next_record kernel/printk/printk.c:3129 [inline]
 console_flush_one_record kernel/printk/printk.c:3215 [inline]
 console_flush_all+0x713/0xb00 kernel/printk/printk.c:3289
 __console_flush_and_unlock kernel/printk/printk.c:3319 [inline]
 console_unlock+0xbb/0x190 kernel/printk/printk.c:3359
 vprintk_emit+0x47b/0x550 kernel/printk/printk.c:2426
 dev_vprintk_emit+0x337/0x3f0 drivers/base/core.c:4914
 dev_printk_emit+0xe0/0x130 drivers/base/core.c:4925
 _dev_err+0x10a/0x160 drivers/base/core.c:4980
 urb_irq_callback+0x3c7/0x5f0 drivers/input/misc/yealink.c:435
 __usb_hcd_giveback_urb+0x376/0x540 drivers/usb/core/hcd.c:1661
 dummy_timer+0x85f/0x45b0 drivers/usb/gadget/udc/dummy_hcd.c:1995
 __run_hrtimer kernel/time/hrtimer.c:1777 [inline]
 __hrtimer_run_queues+0x51c/0xc30 kernel/time/hrtimer.c:1841
 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1858
 handle_softirqs+0x22b/0x7c0 kernel/softirq.c:622
 do_softirq+0x76/0xd0 kernel/softirq.c:523
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
 wg_packet_create_data_done drivers/net/wireguard/send.c:247 [inline]
 wg_packet_tx_worker+0x16b/0x7c0 drivers/net/wireguard/send.c:276
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340
 rescuer_thread+0x851/0xed0 kernel/workqueue.c:3528
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>

final repro crashed as (corrupted=false):
INFO: task kworker/0:5:6150 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:5     state:D
 stack:22704 pid:6150  tgid:6150  ppid:2      task_flags:0x4288060 flags:0x00080000
Workqueue: usb_hub_wq hub_event

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x149b/0x4fd0 kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6960
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017
 __mutex_lock_common kernel/locking/mutex.c:692 [inline]
 __mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:776
 class_mutex_constructor include/linux/mutex.h:253 [inline]
 __input_unregister_device+0x328/0x640 drivers/input/input.c:2187
 input_unregister_device+0x9b/0x100 drivers/input/input.c:2418
 usb_cleanup+0x7c/0x1e0 drivers/input/misc/yealink.c:793
 usb_disconnect+0x42/0x70 drivers/input/misc/yealink.c:811
 usb_unbind_interface+0x26e/0x910 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:571 [inline]
 __device_release_driver drivers/base/dd.c:1282 [inline]
 device_release_driver_internal+0x4d9/0x800 drivers/base/dd.c:1305
 bus_remove_device+0x34d/0x440 drivers/base/bus.c:616
 device_del+0x511/0x8e0 drivers/base/core.c:3878
 usb_disable_device+0x3d4/0x8e0 drivers/usb/core/message.c:1418
 usb_disconnect+0x32f/0x990 drivers/usb/core/hub.c:2345
 hub_port_connect drivers/usb/core/hub.c:5407 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
 port_event drivers/usb/core/hub.c:5871 [inline]
 hub_event+0x1ca9/0x4ef0 drivers/usb/core/hub.c:5953
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>

Showing all locks held in the system:
7 locks held by kworker/1:1/30:
1 lock held by khungtaskd/32:
 #0: ffffffff8df41aa0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #0: ffffffff8df41aa0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
 #0: ffffffff8df41aa0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
3 locks held by kworker/u8:4/63:
 #0: ffff88813ff29948
 (
(wq_completion)events_unbound
#2
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3232 [inline]
, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
 #1: 
ffffc9000212fbc0
 ((linkwatch_work).work
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3233 [inline]
, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
 #2: 
ffffffff8f312048
 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:303
5 locks held by kworker/1:2/906:
2 locks held by getty/5586:
 #0: ffff88814d31f0a0
 (&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x449/0x1460 drivers/tty/n_tty.c:2211
4 locks held by udevd/5896:
 #0: 
ffff888026b81418 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xb7/0xe20 fs/seq_file.c:182
 #1: 
ffff888058e2bc88 (
&of->mutex#2
){+.+.}-{4:4}
, at: kernfs_seq_start+0x5c/0x420 fs/kernfs/file.c:172
 #2: 
ffff8880759715a8
 (
kn->active#19
){.+.+}-{0:0}
, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
, at: kernfs_seq_start+0xb2/0x420 fs/kernfs/file.c:173
 #3: 
ffff888030270198 (&dev->mutex){....}-{4:4}, at: device_lock_interruptible include/linux/device.h:900 [inline]
ffff888030270198 (&dev->mutex){....}-{4:4}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
5 locks held by kworker/1:3/5897:
 #0: ffff888142a8a948 ((wq_completion)usb_hub_wq
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3232 [inline]
, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
 #1: ffffc900041a7bc0
 (
(work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3233 [inline]
, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
 #2: 
ffff888143b2d198
 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline]
 (&dev->mutex){....}-{4:4}, at: hub_event+0x187/0x4ef0 drivers/usb/core/hub.c:5899
 #3: ffff88802fd0f198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline]
 #3: ffff88802fd0f198 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x430 drivers/base/dd.c:1006
 #4: ffff88801b280188
 (
&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
3 locks held by kworker/1:4/5981:
2 locks held by syz-executor/5985:
 #0: 
ffffffff8f312048
 (
rtnl_mutex
){+.+.}-{4:4}
, at: tun_detach drivers/net/tun.c:634 [inline]
, at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3436
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_remove_by_name_ns+0x3d/0x130 fs/kernfs/dir.c:1717
1 lock held by syz-executor/5988:
 #0: 
ffffffff8f312048
 (
rtnl_mutex
){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:634 [inline]
){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3436
4 locks held by udevd/5991:
 #0: 
ffff88801eb53e80
 (
&p->lock
){+.+.}-{4:4}
, at: seq_read_iter+0xb7/0xe20 fs/seq_file.c:182
 #1: 
ffff8880322ea488
 (&of->mutex#2
){+.+.}-{4:4}
, at: kernfs_seq_start+0x5c/0x420 fs/kernfs/file.c:172
 #2: 
ffff888030225788
 (
kn->active
#19
){.+.+}-{0:0}
, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
, at: kernfs_seq_start+0xb2/0x420 fs/kernfs/file.c:173
 #3: 
ffff88805abf6198
 (
&dev->mutex
){....}-{4:4}
, at: device_lock_interruptible include/linux/device.h:900 [inline]
, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
1 lock held by syz-executor/5994:
 #0: 
ffffffff8f312048
 (
rtnl_mutex
){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:634 [inline]
){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3436
1 lock held by syz-executor/5997:
 #0: 
ffffffff8f312048
 (
rtnl_mutex
){+.+.}-{4:4}
, at: tun_detach drivers/net/tun.c:634 [inline]
, at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3436
1 lock held by syz-executor/5998:
 #0: 
ffffffff8f312048 (
rtnl_mutex
){+.+.}-{4:4}
, at: tun_detach drivers/net/tun.c:634 [inline]
, at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3436
4 locks held by udevd/6003:
 #0: ffff888033e5de80 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xb7/0xe20 fs/seq_file.c:182
 #1: 
ffff888024280488
 (
&of->mutex
#2
){+.+.}-{4:4}
, at: kernfs_seq_start+0x5c/0x420 fs/kernfs/file.c:172
 #2: ffff888056f371e8
 (
kn->active
#19
){.+.+}-{0:0}
, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
, at: kernfs_seq_start+0xb2/0x420 fs/kernfs/file.c:173
 #3: 
ffff88802fd0f198
 (
&dev->mutex){....}-{4:4}
, at: device_lock_interruptible include/linux/device.h:900 [inline]
, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
1 lock held by syz-executor/6005:
 #0: ffff88801b280188 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_find_and_get_ns+0x34/0xe0 fs/kernfs/dir.c:938
3 locks held by kworker/u8:3/6015:
 #0: ffff88814cbd6948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline]
 #0: ffff88814cbd6948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
 #1: 
ffffc90003c67bc0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline]
ffffc90003c67bc0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
 #2: 
ffffffff8f312048
 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4734
1 lock held by kworker/R-wg-cr/6023:
 #0: ffffffff8dde7dc8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2730 [inline]
 #0: ffffffff8dde7dc8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x518/0xed0 kernel/workqueue.c:3560
1 lock held by kworker/R-wg-cr/6025:
 #0: 
ffffffff8dde7dc8
 (
wq_pool_attach_mutex
){+.+.}-{4:4}
, at: worker_attach_to_pool+0x2e/0x3a0 kernel/workqueue.c:2672
1 lock held by kworker/R-wg-cr/6026:
 #0: 
ffffffff8dde7dc8
 (
wq_pool_attach_mutex
){+.+.}-{4:4}
, at: worker_detach_from_pool kernel/workqueue.c:2730 [inline]
, at: rescuer_thread+0x518/0xed0 kernel/workqueue.c:3560
7 locks held by kworker/R-wg-cr/6028:
1 lock held by kworker/R-wg-cr/6030:
 #0: 
ffffffff8dde7dc8
 (wq_pool_attach_mutex){+.+.}-{4:4}
, at: worker_attach_to_pool+0x2e/0x3a0 kernel/workqueue.c:2672
2 locks held by kworker/R-wg-cr/6031:
1 lock held by kworker/R-wg-cr/6034:
 #0: ffffffff8dde7dc8
 (wq_pool_attach_mutex
){+.+.}-{4:4}
, at: worker_detach_from_pool kernel/workqueue.c:2730 [inline]
, at: rescuer_thread+0x518/0xed0 kernel/workqueue.c:3560
1 lock held by kworker/R-wg-cr/6036:
 #0: ffffffff8dde7dc8
 (
wq_pool_attach_mutex
){+.+.}-{4:4}
, at: worker_detach_from_pool kernel/workqueue.c:2730 [inline]
, at: rescuer_thread+0x518/0xed0 kernel/workqueue.c:3560
1 lock held by kworker/R-wg-cr/6037:
 #0: 
ffffffff8dde7dc8
 (
wq_pool_attach_mutex
){+.+.}-{4:4}
, at: worker_attach_to_pool+0x2e/0x3a0 kernel/workqueue.c:2672
1 lock held by kworker/R-wg-cr/6039:
1 lock held by kworker/R-wg-cr/6040:
 #0: ffffffff8dde7dc8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2730 [inline]
 #0: ffffffff8dde7dc8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x518/0xed0 kernel/workqueue.c:3560
1 lock held by kworker/R-wg-cr/6041:
 #0: ffffffff8dde7dc8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2730 [inline]
 #0: ffffffff8dde7dc8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x518/0xed0 kernel/workqueue.c:3560
2 locks held by kworker/R-wg-cr/6042:
2 locks held by kworker/R-wg-cr/6044:
1 lock held by kworker/R-wg-cr/6045:
 #0: 
ffffffff8dde7dc8
 (
wq_pool_attach_mutex
){+.+.}-{4:4}
, at: worker_detach_from_pool kernel/workqueue.c:2730 [inline]
, at: rescuer_thread+0x518/0xed0 kernel/workqueue.c:3560
5 locks held by kworker/1:6/6095:
3 locks held by kworker/1:7/6099:
6 locks held by kworker/0:5/6150:
 #0: ffff888142a8a948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline]
 #0: ffff888142a8a948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
 #1: 
ffffc9000390fbc0
 ((work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3233 [inline]
, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
 #2: ffff888027f8a198
 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline]
 (&dev->mutex){....}-{4:4}, at: hub_event+0x187/0x4ef0 drivers/usb/core/hub.c:5899
 #3: ffff888055edf198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline]
 #3: ffff888055edf198 (&dev->mutex){....}-{4:4}, at: usb_disconnect+0xf8/0x990 drivers/usb/core/hub.c:2336
 #4: 
ffff888079e0b160
 (&dev->mutex
){....}-{4:4}
, at: device_lock include/linux/device.h:895 [inline]
, at: __device_driver_lock drivers/base/dd.c:1104 [inline]
, at: device_release_driver_internal+0xb6/0x800 drivers/base/dd.c:1302
 #5: 
ffffffff8ed98208
 (
input_mutex
){+.+.}-{4:4}
, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
, at: __input_unregister_device+0x328/0x640 drivers/input/input.c:2187
6 locks held by kworker/1:8/6164:
 #0: 
ffff888142a8a948
 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline]
 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
 #1: ffffc90003cb7bc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline]
 #1: ffffc90003cb7bc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
 #2: ffff888143b1c198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline]
 #2: ffff888143b1c198 (&dev->mutex){....}-{4:4}, at: hub_event+0x187/0x4ef0 drivers/usb/core/hub.c:5899
 #3: ffff888030270198
 (
&dev->mutex
){....}-{4:4}
, at: device_lock include/linux/device.h:895 [inline]
, at: __device_attach+0x88/0x430 drivers/base/dd.c:1006
 #4: 
ffff88807bfc1160
 (
&dev->mutex
){....}-{4:4}
, at: device_lock include/linux/device.h:895 [inline]
, at: __device_attach+0x88/0x430 drivers/base/dd.c:1006
 #5: 
ffffffff8ed98208 (
input_mutex){+.+.}-{4:4}, at: class_mutex_intr_constructor include/linux/mutex.h:255 [inline]
input_mutex){+.+.}-{4:4}, at: input_register_device+0xa76/0x1170 drivers/input/input.c:2374
2 locks held by kworker/1:9/6172:
2 locks held by kworker/1:10/6175:
2 locks held by kworker/1:11/6176:
4 locks held by udevd/6177:
 #0: 
ffff88802fb0eb08
 (
&p->lock
){+.+.}-{4:4}
, at: seq_read_iter+0xb7/0xe20 fs/seq_file.c:182
 #1: ffff8880330b6088 (&of->mutex
#2){+.+.}-{4:4}, at: kernfs_seq_start+0x5c/0x420 fs/kernfs/file.c:172
 #2: 
ffff8880327afe18
 (
kn->active
#19
){.+.+}-{0:0}
, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
, at: kernfs_seq_start+0xb2/0x420 fs/kernfs/file.c:173
 #3: ffff888055edf198 (&dev->mutex){....}-{4:4}, at: device_lock_interruptible include/linux/device.h:900 [inline]
 #3: ffff888055edf198 (&dev->mutex){....}-{4:4}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
3 locks held by kworker/1:12/6185:
 #0: 
ffff88813ff12948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3232 [inline]
ffff88813ff12948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
 #1: ffffc90003df7bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3233 [inline]
 #1: ffffc90003df7bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
 #2: ffffffff8f312048 (rtnl_mutex){+.+.}-{4:4}
, at: reg_check_chans_work+0xa1/0xf00 net/wireless/reg.c:2453
4 locks held by udevd/6194:
 #0: 
ffff88807c6b8790
 (
&p->lock
){+.+.}-{4:4}
, at: seq_read_iter+0xb7/0xe20 fs/seq_file.c:182
 #1: ffff8880737e5088
 (
&of->mutex#2){+.+.}-{4:4}
, at: kernfs_seq_start+0x5c/0x420 fs/kernfs/file.c:172
 #2: 
ffff88807e4a8008
 (
kn->active
#19){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
#19){.+.+}-{0:0}, at: kernfs_seq_start+0xb2/0x420 fs/kernfs/file.c:173
 #3: ffff88802fd0c198
 (&dev->mutex){....}-{4:4}
, at: device_lock_interruptible include/linux/device.h:900 [inline]
, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
1 lock held by udevd/6227:
 #0: ffff88801b280188 (&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_dop_revalidate+0x9e/0x5d0 fs/kernfs/dir.c:1185
1 lock held by syz-executor/6232:
 #0: 
ffffffff8f312048
 (
rtnl_mutex
){+.+.}-{4:4}
, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
, at: inet_rtm_newaddr+0x3b0/0x18b0 net/ipv4/devinet.c:978
1 lock held by syz-executor/6234:
 #0: 
ffffffff8f312048
 (
rtnl_mutex
){+.+.}-{4:4}
, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
, at: inet_rtm_newaddr+0x3b0/0x18b0 net/ipv4/devinet.c:978
1 lock held by syz-executor/6237:
 #0: ffffffff8f312048 (
rtnl_mutex
){+.+.}-{4:4}
, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
, at: inet_rtm_newaddr+0x3b0/0x18b0 net/ipv4/devinet.c:978
1 lock held by syz-executor/6238:
 #0: 
ffffffff8f312048
 (
rtnl_mutex
){+.+.}-{4:4}
, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
, at: inet_rtm_newaddr+0x3b0/0x18b0 net/ipv4/devinet.c:978
1 lock held by syz-executor/6240:
 #0: 
ffffffff8f312048
 (
rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0 net/ipv4/devinet.c:978
1 lock held by syz-executor/6241:
 #0: ffffffff8f312048
 (
rtnl_mutex
){+.+.}-{4:4}
, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
, at: inet_rtm_newaddr+0x3b0/0x18b0 net/ipv4/devinet.c:978
2 locks held by kworker/1:16/6260:
2 locks held by syz-executor/6268:
 #0: 
ffff888027b55118
 (&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188 (&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6269:
 #0: ffff888022788118
 (&data->open_mutex){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6270:
 #0: 
ffff88807b46f918
 (
&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6271:
 #0: 
ffff88807b46b918
 (
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6272:
 #0: ffff88807b468918
 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6273:
 #0: 
ffff888028aa9918
 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6285:
 #0: 
ffff888033df5118
 (
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6286:
 #0: 
ffff888033df6918
 (
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem
){++++}-{4:4}, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6288:
 #0: ffff88805b477118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6289:
 #0: 
ffff88805b473118
 (
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6290:
 #0: ffff8880554ac918
 (
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: 
ffff88801b280188
 (
&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796
2 locks held by syz-executor/6291:
 #0: 
ffff88807b8d8918
 (
&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
 #1: ffff88801b280188 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_add_one+0x41/0x5c0 fs/kernfs/dir.c:796

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 32 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x135/0x170 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]
 watchdog+0xf95/0xfe0 kernel/hung_task.c:515
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
yealink 2-1:36.0: unexpected response 0
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6043 Comm: kworker/R-wg-cr Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: wg-crypt-wg2 wg_packet_tx_worker
RIP: 0010:io_serial_out+0x7c/0xc0 drivers/tty/serial/8250/8250_port.c:407
Code: db a6 fc 44 89 f9 d3 e5 49 83 c6 40 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 2c fb 0c fd 41 03 2e 89 d8 89 ea ee <5b> 41 5c 41 5e 41 5f 5d e9 e2 23 f6 fb cc 44 89 f9 80 e1 07 38 c1
RSP: 0018:ffffc90000a082d0 EFLAGS: 00000002
RAX: 000000000000005d RBX: 000000000000005d RCX: 0000000000000000
RDX: 00000000000003f8 RSI: 0000000000000000 RDI: 0000000000000020
RBP: 00000000000003f8 R08: ffff888024360237 R09: 1ffff1100486c046
R10: dffffc0000000000 R11: ffffffff851a1ca0 R12: dffffc0000000000
R13: ffffffff998f59ee R14: ffffffff99c0a2c0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888125f1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33263fff CR3: 0000000056fa8000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 serial_port_out include/linux/serial_core.h:811 [inline]
 serial8250_console_putchar drivers/tty/serial/8250/8250_port.c:3192 [inline]
 serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:-1 [inline]
 serial8250_console_write+0x13c5/0x1b60 drivers/tty/serial/8250/8250_port.c:3342
 console_emit_next_record kernel/printk/printk.c:3129 [inline]
 console_flush_one_record kernel/printk/printk.c:3215 [inline]
 console_flush_all+0x713/0xb00 kernel/printk/printk.c:3289
 __console_flush_and_unlock kernel/printk/printk.c:3319 [inline]
 console_unlock+0xbb/0x190 kernel/printk/printk.c:3359
 vprintk_emit+0x47b/0x550 kernel/printk/printk.c:2426
 dev_vprintk_emit+0x337/0x3f0 drivers/base/core.c:4914
 dev_printk_emit+0xe0/0x130 drivers/base/core.c:4925
 _dev_err+0x10a/0x160 drivers/base/core.c:4980
 urb_irq_callback+0x3c7/0x5f0 drivers/input/misc/yealink.c:435
 __usb_hcd_giveback_urb+0x376/0x540 drivers/usb/core/hcd.c:1661
 dummy_timer+0x85f/0x45b0 drivers/usb/gadget/udc/dummy_hcd.c:1995
 __run_hrtimer kernel/time/hrtimer.c:1777 [inline]
 __hrtimer_run_queues+0x51c/0xc30 kernel/time/hrtimer.c:1841
 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1858
 handle_softirqs+0x22b/0x7c0 kernel/softirq.c:622
 do_softirq+0x76/0xd0 kernel/softirq.c:523
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
 wg_packet_create_data_done drivers/net/wireguard/send.c:247 [inline]
 wg_packet_tx_worker+0x16b/0x7c0 drivers/net/wireguard/send.c:276
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340
 rescuer_thread+0x851/0xed0 kernel/workqueue.c:3528
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>