INFO: task kworker/0:3:3655 blocked for more than 143 seconds.
Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:3 state:D stack:20760 pid: 3655 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5178 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6490
schedule+0xcb/0x190 kernel/sched/core.c:6566
schedule_timeout+0xac/0x300 kernel/time/timer.c:1911
do_wait_for_common+0x3ea/0x560 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x46/0x60 kernel/sched/completion.c:138
r871xu_dev_remove+0x6b/0x440 drivers/staging/rtl8712/usb_intf.c:595
usb_unbind_interface+0x1f2/0x860 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:545 [inline]
__device_release_driver drivers/base/dd.c:1222 [inline]
device_release_driver_internal+0x5bc/0x8a0 drivers/base/dd.c:1248
bus_remove_device+0x2fd/0x410 drivers/base/bus.c:529
device_del+0x6ec/0xbe0 drivers/base/core.c:3615
usb_disable_device+0x3dd/0x820 drivers/usb/core/message.c:1419
usb_disconnect+0x346/0x890 drivers/usb/core/hub.c:2228
hub_port_connect+0x2a2/0x2930 drivers/usb/core/hub.c:5207
hub_port_connect_change+0x619/0xbe0 drivers/usb/core/hub.c:5507
port_event+0xeb7/0x1390 drivers/usb/core/hub.c:5663
hub_event+0x5be/0xd70 drivers/usb/core/hub.c:5745
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
process_scheduled_works kernel/workqueue.c:2352 [inline]
worker_thread+0xe16/0x1330 kernel/workqueue.c:2438
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
INFO: task kworker/1:4:3674 blocked for more than 143 seconds.
Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:4 state:D stack:19744 pid: 3674 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5178 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6490
schedule+0xcb/0x190 kernel/sched/core.c:6566
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6625
__mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
unregister_netdev+0x79/0x210 net/core/dev.c:10901
r871xu_dev_remove+0xa6/0x440 drivers/staging/rtl8712/usb_intf.c:597
usb_unbind_interface+0x1f2/0x860 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:545 [inline]
__device_release_driver drivers/base/dd.c:1222 [inline]
device_release_driver_internal+0x5bc/0x8a0 drivers/base/dd.c:1248
bus_remove_device+0x2fd/0x410 drivers/base/bus.c:529
device_del+0x6ec/0xbe0 drivers/base/core.c:3615
usb_disable_device+0x3dd/0x820 drivers/usb/core/message.c:1419
usb_disconnect+0x346/0x890 drivers/usb/core/hub.c:2228
hub_port_connect+0x2a2/0x2930 drivers/usb/core/hub.c:5207
hub_port_connect_change+0x619/0xbe0 drivers/usb/core/hub.c:5507
port_event+0xeb7/0x1390 drivers/usb/core/hub.c:5663
hub_event+0x5be/0xd70 drivers/usb/core/hub.c:5745
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
process_scheduled_works kernel/workqueue.c:2352 [inline]
worker_thread+0xe16/0x1330 kernel/workqueue.c:2438
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
INFO: task kworker/0:5:3675 blocked for more than 144 seconds.
Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:5 state:D stack:20376 pid: 3675 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5178 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6490
schedule+0xcb/0x190 kernel/sched/core.c:6566
schedule_timeout+0xac/0x300 kernel/time/timer.c:1911
do_wait_for_common+0x3ea/0x560 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x46/0x60 kernel/sched/completion.c:138
r871xu_dev_remove+0x6b/0x440 drivers/staging/rtl8712/usb_intf.c:595
usb_unbind_interface+0x1f2/0x860 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:545 [inline]
__device_release_driver drivers/base/dd.c:1222 [inline]
device_release_driver_internal+0x5bc/0x8a0 drivers/base/dd.c:1248
bus_remove_device+0x2fd/0x410 drivers/base/bus.c:529
device_del+0x6ec/0xbe0 drivers/base/core.c:3615
usb_disable_device+0x3dd/0x820 drivers/usb/core/message.c:1419
usb_disconnect+0x346/0x890 drivers/usb/core/hub.c:2228
hub_port_connect+0x2a2/0x2930 drivers/usb/core/hub.c:5207
hub_port_connect_change+0x619/0xbe0 drivers/usb/core/hub.c:5507
port_event+0xeb7/0x1390 drivers/usb/core/hub.c:5663
hub_event+0x5be/0xd70 drivers/usb/core/hub.c:5745
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
process_scheduled_works kernel/workqueue.c:2352 [inline]
worker_thread+0xe16/0x1330 kernel/workqueue.c:2438
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
INFO: task kworker/1:5:3676 blocked for more than 145 seconds.
Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:5 state:D stack:20856 pid: 3676 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5178 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6490
schedule+0xcb/0x190 kernel/sched/core.c:6566
schedule_timeout+0xac/0x300 kernel/time/timer.c:1911
do_wait_for_common+0x3ea/0x560 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x46/0x60 kernel/sched/completion.c:138
r871xu_dev_remove+0x6b/0x440 drivers/staging/rtl8712/usb_intf.c:595
usb_unbind_interface+0x1f2/0x860 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:545 [inline]
__device_release_driver drivers/base/dd.c:1222 [inline]
device_release_driver_internal+0x5bc/0x8a0 drivers/base/dd.c:1248
bus_remove_device+0x2fd/0x410 drivers/base/bus.c:529
device_del+0x6ec/0xbe0 drivers/base/core.c:3615
usb_disable_device+0x3dd/0x820 drivers/usb/core/message.c:1419
usb_disconnect+0x346/0x890 drivers/usb/core/hub.c:2228
hub_port_connect+0x2a2/0x2930 drivers/usb/core/hub.c:5207
hub_port_connect_change+0x619/0xbe0 drivers/usb/core/hub.c:5507
port_event+0xeb7/0x1390 drivers/usb/core/hub.c:5663
hub_event+0x5be/0xd70 drivers/usb/core/hub.c:5745
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
process_scheduled_works kernel/workqueue.c:2352 [inline]
worker_thread+0xe16/0x1330 kernel/workqueue.c:2438
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
INFO: task kworker/0:8:3682 blocked for more than 145 seconds.
Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:8 state:D stack:20856 pid: 3682 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5178 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6490
schedule+0xcb/0x190 kernel/sched/core.c:6566
schedule_timeout+0xac/0x300 kernel/time/timer.c:1911
do_wait_for_common+0x3ea/0x560 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x46/0x60 kernel/sched/completion.c:138
r871xu_dev_remove+0x6b/0x440 drivers/staging/rtl8712/usb_intf.c:595
usb_unbind_interface+0x1f2/0x860 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:545 [inline]
__device_release_driver drivers/base/dd.c:1222 [inline]
device_release_driver_internal+0x5bc/0x8a0 drivers/base/dd.c:1248
bus_remove_device+0x2fd/0x410 drivers/base/bus.c:529
device_del+0x6ec/0xbe0 drivers/base/core.c:3615
usb_disable_device+0x3dd/0x820 drivers/usb/core/message.c:1419
usb_disconnect+0x346/0x890 drivers/usb/core/hub.c:2228
hub_port_connect+0x2a2/0x2930 drivers/usb/core/hub.c:5207
hub_port_connect_change+0x619/0xbe0 drivers/usb/core/hub.c:5507
port_event+0xeb7/0x1390 drivers/usb/core/hub.c:5663
hub_event+0x5be/0xd70 drivers/usb/core/hub.c:5745
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
process_scheduled_works kernel/workqueue.c:2352 [inline]
worker_thread+0xe16/0x1330 kernel/workqueue.c:2438
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
INFO: task kworker/1:9:3987 blocked for more than 146 seconds.
Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:9 state:D stack:20856 pid: 3987 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5178 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6490
schedule+0xcb/0x190 kernel/sched/core.c:6566
schedule_timeout+0xac/0x300 kernel/time/timer.c:1911
do_wait_for_common+0x3ea/0x560 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x46/0x60 kernel/sched/completion.c:138
r871xu_dev_remove+0x6b/0x440 drivers/staging/rtl8712/usb_intf.c:595
usb_unbind_interface+0x1f2/0x860 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:545 [inline]
__device_release_driver drivers/base/dd.c:1222 [inline]
device_release_driver_internal+0x5bc/0x8a0 drivers/base/dd.c:1248
bus_remove_device+0x2fd/0x410 drivers/base/bus.c:529
device_del+0x6ec/0xbe0 drivers/base/core.c:3615
usb_disable_device+0x3dd/0x820 drivers/usb/core/message.c:1419
usb_disconnect+0x346/0x890 drivers/usb/core/hub.c:2228
hub_port_connect+0x2a2/0x2930 drivers/usb/core/hub.c:5207
hub_port_connect_change+0x619/0xbe0 drivers/usb/core/hub.c:5507
port_event+0xeb7/0x1390 drivers/usb/core/hub.c:5663
hub_event+0x5be/0xd70 drivers/usb/core/hub.c:5745
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
process_scheduled_works kernel/workqueue.c:2352 [inline]
worker_thread+0xe16/0x1330 kernel/workqueue.c:2438
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
Showing all locks held in the system:
3 locks held by kworker/0:0/6:
#0: ffff888011c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900000b7d00 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8dbc2d68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x50 net/core/dev.c:10175
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cb1f030 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cb1f830 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
3 locks held by kworker/1:0/22:
#0: ffff888011c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900001c7d00 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8dbc2d68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x50 net/core/dev.c:10175
1 lock held by khungtaskd/28:
#0: ffffffff8cb1ee60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
3 locks held by kworker/0:2/142:
#0: ffff888011c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900029afd00 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8dbc2d68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x50 net/core/dev.c:10175
2 locks held by dhcpcd/3181:
#0: ffffffff8dbc2d68 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x2cd/0x1ab0 net/ipv4/devinet.c:1070
#1: ffff88802149cdf0 (&padapter->mutex_start){+.+.}-{3:3}, at: netdev_open+0x31/0x580 drivers/staging/rtl8712/os_intfs.c:374
2 locks held by getty/3280:
#0: ffff888026a26098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc90002d162e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2124
5 locks held by kworker/0:3/3655:
#0: ffff888017962938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900034bfd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff8880216d6190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#2: ffff8880216d6190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bf/0xd70 drivers/usb/core/hub.c:5691
#3: ffff888077c28190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#3: ffff888077c28190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xff/0x890 drivers/usb/core/hub.c:2219
#4: ffff888076a1a118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#4: ffff888076a1a118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1054 [inline]
#4: ffff888076a1a118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xb5/0x8a0 drivers/base/dd.c:1245
3 locks held by kworker/1:3/3672:
#0: ffff888011c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900035cfd00 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8dbc2d68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x50 net/core/dev.c:10175
3 locks held by kworker/0:4/3673:
#0: ffff8880263d2938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900035dfd00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8dbc2d68 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x15/0x30 net/ipv6/addrconf.c:4616
6 locks held by kworker/1:4/3674:
#0: ffff888017962938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900035efd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff8880216ee190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#2: ffff8880216ee190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bf/0xd70 drivers/usb/core/hub.c:5691
#3: ffff888020742190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#3: ffff888020742190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xff/0x890 drivers/usb/core/hub.c:2219
#4: ffff88807d4e8118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#4: ffff88807d4e8118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1054 [inline]
#4: ffff88807d4e8118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xb5/0x8a0 drivers/base/dd.c:1245
#5: ffffffff8dbc2d68 (rtnl_mutex){+.+.}-{3:3}, at: unregister_netdev+0x79/0x210 net/core/dev.c:10901
5 locks held by kworker/0:5/3675:
#0: ffff888017962938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900035ffd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff8880216c6190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#2: ffff8880216c6190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bf/0xd70 drivers/usb/core/hub.c:5691
#3: ffff8880228c9190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#3: ffff8880228c9190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xff/0x890 drivers/usb/core/hub.c:2219
#4: ffff88807759b118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#4: ffff88807759b118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1054 [inline]
#4: ffff88807759b118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xb5/0x8a0 drivers/base/dd.c:1245
5 locks held by kworker/1:5/3676:
#0: ffff888017962938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc9000360fd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff888021776190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#2: ffff888021776190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bf/0xd70 drivers/usb/core/hub.c:5691
#3: ffff888022506190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#3: ffff888022506190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xff/0x890 drivers/usb/core/hub.c:2219
#4: ffff888074890118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#4: ffff888074890118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1054 [inline]
#4: ffff888074890118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xb5/0x8a0 drivers/base/dd.c:1245
3 locks held by kworker/0:6/3677:
#0: ffff888011c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc9000361fd00 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8dbc2d68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x50 net/core/dev.c:10175
3 locks held by kworker/1:7/3679:
#0: ffff8880263d2938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc9000363fd00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8dbc2d68 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x15/0x30 net/ipv6/addrconf.c:4616
3 locks held by kworker/0:7/3681:
#0: ffff888011c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc9000309fd00 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8dbc2d68 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:75
5 locks held by kworker/0:8/3682:
#0: ffff888017962938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900030afd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff88802178e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#2: ffff88802178e190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bf/0xd70 drivers/usb/core/hub.c:5691
#3: ffff888075a3f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#3: ffff888075a3f190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xff/0x890 drivers/usb/core/hub.c:2219
#4: ffff888017931118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#4: ffff888017931118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1054 [inline]
#4: ffff888017931118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xb5/0x8a0 drivers/base/dd.c:1245
3 locks held by udevd/3733:
#0: ffff88806d48bc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:197 [inline]
#0: ffff88806d48bc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x19b/0x570 fs/kernfs/file.c:236
#1: ffff888016f4bda0 (kn->active#86){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline]
#1: ffff888016f4bda0 (kn->active#86){++++}-{0:0}, at: kernfs_fop_read_iter+0x1b3/0x570 fs/kernfs/file.c:236
#2: ffff888075a3f190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline]
#2: ffff888075a3f190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x30/0x390 drivers/usb/core/sysfs.c:873
3 locks held by udevd/3744:
#0: ffff88806e301888 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:197 [inline]
#0: ffff88806e301888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x19b/0x570 fs/kernfs/file.c:236
#1: ffff888027124578 (kn->active#86){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline]
#1: ffff888027124578 (kn->active#86){++++}-{0:0}, at: kernfs_fop_read_iter+0x1b3/0x570 fs/kernfs/file.c:236
#2: ffff8880228c9190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline]
#2: ffff8880228c9190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x30/0x390 drivers/usb/core/sysfs.c:873
5 locks held by kworker/1:9/3987:
#0: ffff888017962938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900049a7d00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff88802162a190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#2: ffff88802162a190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bf/0xd70 drivers/usb/core/hub.c:5691
#3: ffff88801791c190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#3: ffff88801791c190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xff/0x890 drivers/usb/core/hub.c:2219
#4: ffff88801ef1a118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#4: ffff88801ef1a118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1054 [inline]
#4: ffff88801ef1a118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xb5/0x8a0 drivers/base/dd.c:1245
3 locks held by udevd/4090:
#0: ffff88801c12b888 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:197 [inline]
#0: ffff88801c12b888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x19b/0x570 fs/kernfs/file.c:236
#1: ffff88801bf7bcb8 (kn->active#86){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline]
#1: ffff88801bf7bcb8 (kn->active#86){++++}-{0:0}, at: kernfs_fop_read_iter+0x1b3/0x570 fs/kernfs/file.c:236
#2: ffff888022506190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline]
#2: ffff888022506190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x30/0x390 drivers/usb/core/sysfs.c:873
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x473/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x168/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xcd5/0xd20 kernel/hung_task.c:369
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3605 Comm: strace-static-x Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:__lock_acquire+0x3ff/0x1f80 kernel/locking/lockdep.c:4991
Code: 03 48 89 44 24 48 8a 04 10 84 c0 4c 8b 7c 24 18 0f 85 7a 13 00 00 31 c0 4c 89 6c 24 28 41 83 7d 00 00 0f 95 c0 09 c3 c1 e3 0d <44> 09 e3 8b 44 24 58 c1 e0 0f 0f b7 c0 09 d8 8b 74 24 3c 83 e6 03
RSP: 0018:ffffc90002f7fae8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000000000a3
RDX: dffffc0000000000 RSI: ffffffff8153f3cb RDI: ffff88807d5e1298
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff8153f3cb R12: 00000000000000a3
R13: ffff88801e6527dc R14: 0000000000000000 R15: ffff88801e652818
FS: 00000000016e1340(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd3a8d4fb8 CR3: 0000000021506000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
reacquire_held_locks+0x3b6/0x680 kernel/locking/lockdep.c:5191
__lock_release kernel/locking/lockdep.c:5380 [inline]
lock_release+0x304/0x870 kernel/locking/lockdep.c:5686
rcu_read_unlock include/linux/rcupdate.h:739 [inline]
__lock_task_sighand+0x22f/0x250 kernel/signal.c:1410
lock_task_sighand include/linux/sched/signal.h:744 [inline]
ptrace_unfreeze_traced kernel/ptrace.c:222 [inline]
__do_sys_ptrace kernel/ptrace.c:1298 [inline]
__se_sys_ptrace+0x2bf/0x600 kernel/ptrace.c:1269
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x4e6c1a
Code: 70 41 83 f8 03 c7 44 24 10 08 00 00 00 48 89 44 24 18 48 8d 44 24 30 8b 70 08 4c 0f 43 d1 48 89 44 24 20 b8 65 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 3e 48 85 c0 78 06 41 83 f8 02 76 1b 48 8b 4c
RSP: 002b:00007ffe64109eb0 EFLAGS: 00000206 ORIG_RAX: 0000000000000065
RAX: ffffffffffffffda RBX: 00000000016e12f8 RCX: 00000000004e6c1a
RDX: 0000000000000000 RSI: 0000000000000e27 RDI: 0000000000000018
RBP: 0000000000000018 R08: 0000000000000017 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 00000000016e3a10
R13: 0000000000000000 R14: 000000000000857f R15: 0000000000617180