INFO: task kworker/0:0:7 blocked for more than 143 seconds.
Not tainted 6.4.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:0 state:D stack:21664 pid:7 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
do_wait_for_common+0x449/0x5f0 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+0x4a/0x60 kernel/sched/completion.c:138
r871xu_dev_remove+0x72/0x440 drivers/staging/rtl8712/usb_intf.c:595
usb_unbind_interface+0x1d1/0x840 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:569 [inline]
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x4f9/0x7a0 drivers/base/dd.c:1295
bus_remove_device+0x341/0x410 drivers/base/bus.c:574
device_del+0x538/0x9c0 drivers/base/core.c:3814
usb_disable_device+0x3bf/0x850 drivers/usb/core/message.c:1420
usb_disconnect+0x340/0x8d0 drivers/usb/core/hub.c:2238
hub_port_connect drivers/usb/core/hub.c:5246 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
port_event drivers/usb/core/hub.c:5711 [inline]
hub_event+0x1f36/0x5460 drivers/usb/core/hub.c:5793
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
process_scheduled_works kernel/workqueue.c:2468 [inline]
worker_thread+0xd20/0x1210 kernel/workqueue.c:2554
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task kworker/1:0:22 blocked for more than 143 seconds.
Not tainted 6.4.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:0 state:D stack:21344 pid:22 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
unregister_netdev+0x7d/0x210 net/core/dev.c:10955
r871xu_dev_remove+0xae/0x440 drivers/staging/rtl8712/usb_intf.c:597
usb_unbind_interface+0x1d1/0x840 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:569 [inline]
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x4f9/0x7a0 drivers/base/dd.c:1295
bus_remove_device+0x341/0x410 drivers/base/bus.c:574
device_del+0x538/0x9c0 drivers/base/core.c:3814
usb_disable_device+0x3bf/0x850 drivers/usb/core/message.c:1420
usb_disconnect+0x340/0x8d0 drivers/usb/core/hub.c:2238
hub_port_connect drivers/usb/core/hub.c:5246 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
port_event drivers/usb/core/hub.c:5711 [inline]
hub_event+0x1f36/0x5460 drivers/usb/core/hub.c:5793
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
process_scheduled_works kernel/workqueue.c:2468 [inline]
worker_thread+0xd20/0x1210 kernel/workqueue.c:2554
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task kworker/0:2:901 blocked for more than 143 seconds.
Not tainted 6.4.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:2 state:D stack:21784 pid:901 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
do_wait_for_common+0x449/0x5f0 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+0x4a/0x60 kernel/sched/completion.c:138
r871xu_dev_remove+0x72/0x440 drivers/staging/rtl8712/usb_intf.c:595
usb_unbind_interface+0x1d1/0x840 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:569 [inline]
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x4f9/0x7a0 drivers/base/dd.c:1295
bus_remove_device+0x341/0x410 drivers/base/bus.c:574
device_del+0x538/0x9c0 drivers/base/core.c:3814
usb_disable_device+0x3bf/0x850 drivers/usb/core/message.c:1420
usb_disconnect+0x340/0x8d0 drivers/usb/core/hub.c:2238
hub_port_connect drivers/usb/core/hub.c:5246 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
port_event drivers/usb/core/hub.c:5711 [inline]
hub_event+0x1f36/0x5460 drivers/usb/core/hub.c:5793
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
process_scheduled_works kernel/workqueue.c:2468 [inline]
worker_thread+0xd20/0x1210 kernel/workqueue.c:2554
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task kworker/1:2:904 blocked for more than 144 seconds.
Not tainted 6.4.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2 state:D stack:21784 pid:904 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
unregister_netdev+0x7d/0x210 net/core/dev.c:10955
r871xu_dev_remove+0xae/0x440 drivers/staging/rtl8712/usb_intf.c:597
usb_unbind_interface+0x1d1/0x840 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:569 [inline]
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x4f9/0x7a0 drivers/base/dd.c:1295
bus_remove_device+0x341/0x410 drivers/base/bus.c:574
device_del+0x538/0x9c0 drivers/base/core.c:3814
usb_disable_device+0x3bf/0x850 drivers/usb/core/message.c:1420
usb_disconnect+0x340/0x8d0 drivers/usb/core/hub.c:2238
hub_port_connect drivers/usb/core/hub.c:5246 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
port_event drivers/usb/core/hub.c:5711 [inline]
hub_event+0x1f36/0x5460 drivers/usb/core/hub.c:5793
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
process_scheduled_works kernel/workqueue.c:2468 [inline]
worker_thread+0xd20/0x1210 kernel/workqueue.c:2554
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task kworker/0:1:5036 blocked for more than 144 seconds.
Not tainted 6.4.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1 state:D stack:21528 pid:5036 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
do_wait_for_common+0x449/0x5f0 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+0x4a/0x60 kernel/sched/completion.c:138
r871xu_dev_remove+0x72/0x440 drivers/staging/rtl8712/usb_intf.c:595
usb_unbind_interface+0x1d1/0x840 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:569 [inline]
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x4f9/0x7a0 drivers/base/dd.c:1295
bus_remove_device+0x341/0x410 drivers/base/bus.c:574
device_del+0x538/0x9c0 drivers/base/core.c:3814
usb_disable_device+0x3bf/0x850 drivers/usb/core/message.c:1420
usb_disconnect+0x340/0x8d0 drivers/usb/core/hub.c:2238
hub_port_connect drivers/usb/core/hub.c:5246 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
port_event drivers/usb/core/hub.c:5711 [inline]
hub_event+0x1f36/0x5460 drivers/usb/core/hub.c:5793
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
process_scheduled_works kernel/workqueue.c:2468 [inline]
worker_thread+0xd20/0x1210 kernel/workqueue.c:2554
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task kworker/0:3:5039 blocked for more than 144 seconds.
Not tainted 6.4.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:3 state:D stack:21784 pid:5039 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
do_wait_for_common+0x449/0x5f0 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+0x4a/0x60 kernel/sched/completion.c:138
r871xu_dev_remove+0x72/0x440 drivers/staging/rtl8712/usb_intf.c:595
usb_unbind_interface+0x1d1/0x840 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:569 [inline]
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x4f9/0x7a0 drivers/base/dd.c:1295
bus_remove_device+0x341/0x410 drivers/base/bus.c:574
device_del+0x538/0x9c0 drivers/base/core.c:3814
usb_disable_device+0x3bf/0x850 drivers/usb/core/message.c:1420
usb_disconnect+0x340/0x8d0 drivers/usb/core/hub.c:2238
hub_port_connect drivers/usb/core/hub.c:5246 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
port_event drivers/usb/core/hub.c:5711 [inline]
hub_event+0x1f36/0x5460 drivers/usb/core/hub.c:5793
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
process_scheduled_works kernel/workqueue.c:2468 [inline]
worker_thread+0xd20/0x1210 kernel/workqueue.c:2554
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task kworker/0:17:5448 blocked for more than 145 seconds.
Not tainted 6.4.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:17 state:D stack:27672 pid:5448 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_verify_work
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4630
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Showing all locks held in the system:
5 locks held by kworker/0:0/7:
#0: ffff8880156f0938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc900000c7d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffff888142b41190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#2: ffff888142b41190 (&dev->mutex){....}-{3:3}, at: hub_event+0x20e/0x5460 drivers/usb/core/hub.c:5739
#3: ffff888029f3c190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#3: ffff888029f3c190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xfe/0x8d0 drivers/usb/core/hub.c:2229
#4: ffff888024a94160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#4: ffff888024a94160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888024a94160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xce/0x7a0 drivers/base/dd.c:1292
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8cf27670 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8cf27a30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
6 locks held by kworker/1:0/22:
#0: ffff8880156f0938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc900001c7d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffff888142b29190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#2: ffff888142b29190 (&dev->mutex){....}-{3:3}, at: hub_event+0x20e/0x5460 drivers/usb/core/hub.c:5739
#3: ffff8880763ce190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#3: ffff8880763ce190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xfe/0x8d0 drivers/usb/core/hub.c:2229
#4: ffff88807a0a5160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#4: ffff88807a0a5160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff88807a0a5160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xce/0x7a0 drivers/base/dd.c:1292
#5: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: unregister_netdev+0x7d/0x210 net/core/dev.c:10955
1 lock held by khungtaskd/28:
#0: ffffffff8cf274a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
5 locks held by kworker/0:2/901:
#0: ffff8880156f0938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc900059ffd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffff888142b02190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#2: ffff888142b02190 (&dev->mutex){....}-{3:3}, at: hub_event+0x20e/0x5460 drivers/usb/core/hub.c:5739
#3: ffff888029f3e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#3: ffff888029f3e190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xfe/0x8d0 drivers/usb/core/hub.c:2229
#4: ffff888024a97160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#4: ffff888024a97160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888024a97160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xce/0x7a0 drivers/base/dd.c:1292
6 locks held by kworker/1:2/904:
#0: ffff8880156f0938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90005a2fd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffff888023692190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#2: ffff888023692190 (&dev->mutex){....}-{3:3}, at: hub_event+0x20e/0x5460 drivers/usb/core/hub.c:5739
#3: ffff8880763cd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#3: ffff8880763cd190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xfe/0x8d0 drivers/usb/core/hub.c:2229
#4: ffff888023e7c160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#4: ffff888023e7c160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888023e7c160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xce/0x7a0 drivers/base/dd.c:1292
#5: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: unregister_netdev+0x7d/0x210 net/core/dev.c:10955
2 locks held by dhcpcd/4661:
#0: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x2ce/0x1bc0 net/ipv4/devinet.c:1074
#1: ffff888029f7cdf0 (&padapter->mutex_start){+.+.}-{3:3}, at: netdev_open+0x35/0x720 drivers/staging/rtl8712/os_intfs.c:391
2 locks held by getty/4749:
#0: ffff88802cdba098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176
5 locks held by kworker/0:1/5036:
#0: ffff8880156f0938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90003bffd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffff888142b59190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#2: ffff888142b59190 (&dev->mutex){....}-{3:3}, at: hub_event+0x20e/0x5460 drivers/usb/core/hub.c:5739
#3: ffff888029f3f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#3: ffff888029f3f190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xfe/0x8d0 drivers/usb/core/hub.c:2229
#4: ffff888079d13160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#4: ffff888079d13160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888079d13160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xce/0x7a0 drivers/base/dd.c:1292
5 locks held by kworker/0:3/5039:
#0: ffff8880156f0938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90003c3fd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffff888142b12190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#2: ffff888142b12190 (&dev->mutex){....}-{3:3}, at: hub_event+0x20e/0x5460 drivers/usb/core/hub.c:5739
#3: ffff888072d09190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#3: ffff888072d09190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xfe/0x8d0 drivers/usb/core/hub.c:2229
#4: ffff888077f70160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#4: ffff888077f70160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888077f70160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xce/0x7a0 drivers/base/dd.c:1292
3 locks held by kworker/0:4/5040:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90003c4fd20 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10211
3 locks held by kworker/1:1/5041:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90003c5fd20 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10211
3 locks held by kworker/0:5/5044:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90003c7fd20 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10211
3 locks held by kworker/1:4/5050:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90003cbfd20 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10211
3 locks held by kworker/0:6/5067:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90003d67d20 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10211
3 locks held by kworker/0:7/5068:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90003c1fd20 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10211
3 locks held by kworker/0:8/5069:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90003d97d20 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10211
3 locks held by kworker/0:9/5070:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90003da7d20 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10211
3 locks held by kworker/0:10/5071:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90003db7d20 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10211
3 locks held by kworker/0:11/5072:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90003dd7d20 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10211
3 locks held by kworker/0:12/5108:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90003eafd20 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10211
3 locks held by kworker/0:13/5110:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90003e9fd20 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10211
3 locks held by kworker/0:14/5112:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90003d57d20 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10211
3 locks held by kworker/0:16/5439:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc9000439fd20 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10211
3 locks held by kworker/0:17/5448:
#0: ffff888028656538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc9000449fd20 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffffffff8e09f048 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4630
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5028 Comm: syz-executor646 Not tainted 6.4.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:variable_test_bit arch/x86/include/asm/bitops.h:228 [inline]
RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:240 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:504 [inline]
RIP: 0010:cpu_online include/linux/cpumask.h:1082 [inline]
RIP: 0010:trace_x86_fpu_regs_activated arch/x86/include/asm/trace/fpu.h:57 [inline]
RIP: 0010:fpregs_activate+0x6c/0x1d0 arch/x86/kernel/fpu/context.h:51
Code: e8 e9 6e 58 00 89 dd 48 89 e8 48 c1 e8 06 48 8d 3c c5 e8 be 55 8e be 08 00 00 00 e8 6e 3e b0 00 31 db 48 0f a3 2d 6c c6 22 0d <40> 0f 92 c5 0f 92 c3 bf 02 00 00 00 89 de e8 41 71 58 00 31 ff 89
RSP: 0018:ffffc90003b7fe80 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff8132f872
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e55bee8
RBP: 0000000000000001 R08: dffffc0000000000 R09: fffffbfff1cab7de
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff888018ad7250
FS: 0000555556e26300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff9f12da0f0 CR3: 00000000799c7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
fpregs_restore_userregs arch/x86/kernel/fpu/context.h:77 [inline]
switch_fpu_return+0xe7/0x180 arch/x86/kernel/fpu/core.c:752
arch_exit_to_user_mode_prepare arch/x86/include/asm/entry-common.h:58 [inline]
exit_to_user_mode_prepare+0xd5/0x140 kernel/entry/common.c:206
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7ff9f12ce8fa
Code: 83 ff 03 74 3b 48 83 ec 28 b8 fa ff ff ff 83 ff 02 49 89 ca 0f 44 f8 64 8b 04 25 18 00 00 00 85 c0 75 2d b8 e6 00 00 00 0f 05 <89> c2 f7 da 3d 00 f0 ff ff b8 00 00 00 00 0f 47 c2 48 83 c4 28 c3
RSP: 002b:00007ffe351f6400 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: 0000000000000000 RBX: 00000000000f4240 RCX: 00007ff9f12ce8fa
RDX: 00007ffe351f6440 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000000000168a R08: 00007ffe351f90b0 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000d23ef
R13: 00007ffe351f647c R14: 00007ffe351f6490 R15: 00007ffe351f6480