INFO: task kworker/1:2:1783 blocked for more than 143 seconds.
Not tainted 6.7.0-next-20240112-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2 state:D stack:23712 pid:1783 tgid:1783 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf15/0x5ce0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe7/0x280 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
unregister_netdev+0x12/0x30 net/core/dev.c:11156
r871xu_dev_remove+0x291/0x480 drivers/staging/rtl8712/usb_intf.c:596
usb_unbind_interface+0x1e0/0x8d0 drivers/usb/core/driver.c:461
device_remove drivers/base/dd.c:569 [inline]
device_remove+0x122/0x170 drivers/base/dd.c:561
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1295
bus_remove_device+0x22f/0x420 drivers/base/bus.c:574
device_del+0x39b/0xa50 drivers/base/core.c:3814
usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1416
usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2257
hub_port_connect drivers/usb/core/hub.c:5305 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5605 [inline]
port_event drivers/usb/core/hub.c:5765 [inline]
hub_event+0x1dbb/0x4e20 drivers/usb/core/hub.c:5847
process_one_work+0x8a7/0x1600 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b6/0x1290 kernel/workqueue.c:2787
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:242
INFO: task kworker/0:6:5139 blocked for more than 143 seconds.
Not tainted 6.7.0-next-20240112-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:6 state:D stack:24480 pid:5139 tgid:5139 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf15/0x5ce0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe7/0x280 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
unregister_netdev+0x12/0x30 net/core/dev.c:11156
r871xu_dev_remove+0x291/0x480 drivers/staging/rtl8712/usb_intf.c:596
usb_unbind_interface+0x1e0/0x8d0 drivers/usb/core/driver.c:461
device_remove drivers/base/dd.c:569 [inline]
device_remove+0x122/0x170 drivers/base/dd.c:561
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1295
bus_remove_device+0x22f/0x420 drivers/base/bus.c:574
device_del+0x39b/0xa50 drivers/base/core.c:3814
usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1416
usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2257
hub_port_connect drivers/usb/core/hub.c:5305 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5605 [inline]
port_event drivers/usb/core/hub.c:5765 [inline]
hub_event+0x1dbb/0x4e20 drivers/usb/core/hub.c:5847
process_one_work+0x8a7/0x1600 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b6/0x1290 kernel/workqueue.c:2787
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:242
INFO: task kworker/0:4:10083 blocked for more than 144 seconds.
Not tainted 6.7.0-next-20240112-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:4 state:D stack:24432 pid:10083 tgid:10083 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf15/0x5ce0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe7/0x280 kernel/sched/core.c:6817
schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2159
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3de/0x5f0 kernel/sched/completion.c:116
r871xu_dev_remove+0x8a/0x480 drivers/staging/rtl8712/usb_intf.c:594
usb_unbind_interface+0x1e0/0x8d0 drivers/usb/core/driver.c:461
device_remove drivers/base/dd.c:569 [inline]
device_remove+0x122/0x170 drivers/base/dd.c:561
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1295
bus_remove_device+0x22f/0x420 drivers/base/bus.c:574
device_del+0x39b/0xa50 drivers/base/core.c:3814
usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1416
usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2257
hub_port_connect drivers/usb/core/hub.c:5305 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5605 [inline]
port_event drivers/usb/core/hub.c:5765 [inline]
hub_event+0x1dbb/0x4e20 drivers/usb/core/hub.c:5847
process_one_work+0x8a7/0x1600 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b6/0x1290 kernel/workqueue.c:2787
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:242
Showing all locks held in the system:
3 locks held by kworker/0:1/9:
#0: ffff888014c94d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc900000e7d80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10391
3 locks held by kworker/1:0/23:
#0: ffff888014c94d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc900001d7d80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10391
1 lock held by khungtaskd/29:
#0: ffffffff8d7aeca0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d7aeca0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d7aeca0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
3 locks held by kworker/0:2/783:
#0: ffff888014c94d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc9000451fd80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10391
6 locks held by kworker/1:2/1783:
#0: ffff88801b6db138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc90005e5fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffff88802465d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff88802465d190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e20 drivers/usb/core/hub.c:5793
#3: ffff88807e001190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#3: ffff88807e001190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2248
#4: ffff888014d82160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#4: ffff888014d82160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888014d82160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292
#5: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: unregister_netdev+0x12/0x30 net/core/dev.c:11156
2 locks held by dhcpcd/4726:
#0: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x1d3/0x1f20 net/ipv4/devinet.c:1091
#1: ffff88802d97cdf0 (&padapter->mutex_start){+.+.}-{3:3}, at: netdev_open+0x32/0x830 drivers/staging/rtl8712/os_intfs.c:391
3 locks held by kworker/1:3/4802:
#0: ffff888014c94d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc900015e7d80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10391
2 locks held by getty/4811:
#0: ffff8880316780a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2201
3 locks held by kworker/0:3/5091:
#0: ffff888014c94d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc90003b7fd80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10391
3 locks held by kworker/1:6/5137:
#0: ffff88802bc29138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc9000361fd80 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4671
6 locks held by kworker/0:6/5139:
#0: ffff88801b6db138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc900043dfd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffff888024782190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff888024782190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e20 drivers/usb/core/hub.c:5793
#3: ffff88807f0c0190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#3: ffff88807f0c0190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2248
#4: ffff888079d6b160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#4: ffff888079d6b160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888079d6b160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292
#5: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: unregister_netdev+0x12/0x30 net/core/dev.c:11156
3 locks held by kworker/0:7/5140:
#0: ffff888014c94d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc900043efd80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10391
4 locks held by udevd/5191:
#0: ffff88807d7e67f0 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
#1: ffff88801ef34c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
#2: ffff88805703eca0 (kn->active#30){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
#3: ffff88807e001190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:995 [inline]
#3: ffff88807e001190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
4 locks held by udevd/5279:
#0: ffff888079e6ce08 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
#1: ffff888021d51888 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
#2: ffff88802dd823e8 (kn->active#30){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
#3: ffff88807b1b7190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:995 [inline]
#3: ffff88807b1b7190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
4 locks held by udevd/13942:
#0: ffff8880243a1a60 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
#1: ffff888030b39088 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
#2: ffff88801ff811f8 (kn->active#30){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
#3: ffff88807f0c0190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:995 [inline]
#3: ffff88807f0c0190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
3 locks held by kworker/1:1/27570:
#0: ffff888014c94d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc9001538fd80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10391
2 locks held by kworker/u4:3/1269:
#0: ffff8880b943ccd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
#1: ffff8880b9428a08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x20c/0x900 kernel/sched/psi.c:976
3 locks held by kworker/0:0/6384:
#0: ffff888014c94d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc9001629fd80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10391
5 locks held by kworker/0:4/10083:
#0: ffff88801b6db138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc90005027d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffff888024623190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff888024623190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e20 drivers/usb/core/hub.c:5793
#3: ffff88807b1b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#3: ffff88807b1b7190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2248
#4: ffff88805ac65160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#4: ffff88805ac65160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff88805ac65160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292
4 locks held by udevd/10695:
#0: ffff888022d04cd0 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
#1: ffff88802e008488 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
#2: ffff8880293a8ba8 (kn->active#33){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
#3: ffff88802046d190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:995 [inline]
#3: ffff88802046d190 (&dev->mutex){....}-{3:3}, at: serial_show+0x26/0xa0 drivers/usb/core/sysfs.c:143
5 locks held by kworker/1:8/11079:
#0: ffff88801b6db138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc90002d8fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffff888024625190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff888024625190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e20 drivers/usb/core/hub.c:5793
#3: ffff888024658510 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3151 [inline]
#3: ffff888024658510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5362 [inline]
#3: ffff888024658510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5605 [inline]
#3: ffff888024658510 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5765 [inline]
#3: ffff888024658510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2802/0x4e20 drivers/usb/core/hub.c:5847
#4: ffff88801fce7178 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5363 [inline]
#4: ffff88801fce7178 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5605 [inline]
#4: ffff88801fce7178 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5765 [inline]
#4: ffff88801fce7178 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x282b/0x4e20 drivers/usb/core/hub.c:5847
3 locks held by kworker/0:5/11082:
#0: ffff888014c94d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc900020cfd80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10391
3 locks held by kworker/0:8/11085:
#0: ffff888014c94d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc900020afd80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10391
3 locks held by kworker/0:9/11090:
#0: ffff888014c94d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc90015107d80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10391
5 locks held by kworker/0:10/11099:
#0: ffff88801b6db138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc90015157d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffff888024706190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff888024706190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e20 drivers/usb/core/hub.c:5793
#3: ffff88802046d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#3: ffff88802046d190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2248
#4: ffff88805b109160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#4: ffff88805b109160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff88805b109160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292
3 locks held by kworker/0:11/11118:
#0: ffff888014c94d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc90002fdfd80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10391
3 locks held by kworker/0:14/11348:
#0: ffff88802bc29138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78c/0x1600 kernel/workqueue.c:2608
#1: ffffc9001561fd80 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x1600 kernel/workqueue.c:2609
#2: ffffffff8f2c5de8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4671
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-next-20240112-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf86/0x1210 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 12 Comm: kworker/u4:1 Not tainted 6.7.0-next-20240112-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:hlock_class+0x56/0x130 kernel/locking/lockdep.c:228
Code: 20 66 81 e3 ff 1f 0f b7 db be 08 00 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 c0 0f d1 93 e8 32 8a 7b 00 48 0f a3 1d 3a 6f 66 12 <73> 13 48 69 c3 c8 00 00 00 5b 48 05 e0 13 d1 93 c3 cc cc cc cc 48
RSP: 0018:ffffc90000117780 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 00000000000006c7 RCX: ffffffff816aa07e
RDX: fffffbfff27a2214 RSI: 0000000000000008 RDI: ffffffff93d11098
RBP: ffffc900001178d0 R08: 0000000000000000 R09: fffffbfff27a2213
R10: ffffffff93d1109f R11: 0000000000000002 R12: ffff8880176ed940
R13: 0000000000000100 R14: 0000000000000008 R15: 1ffff92000022ef8
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc9f2ead38 CR3: 0000000022b38000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mark_lock+0xb5/0xc60 kernel/locking/lockdep.c:4656
mark_usage kernel/locking/lockdep.c:4599 [inline]
__lock_acquire+0x992/0x3b30 kernel/locking/lockdep.c:5091
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:356 [inline]
batadv_nc_purge_paths+0xd3/0x3c0 net/batman-adv/network-coding.c:442
batadv_nc_worker+0x9b1/0x10f0 net/batman-adv/network-coding.c:722
process_one_work+0x8a7/0x1600 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b6/0x1290 kernel/workqueue.c:2787
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:242