INFO: task kworker/1:1:27 blocked for more than 143 seconds. Not tainted 5.18.0-rc3-syzkaller-00218-g13bc32bad705 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:24696 pid: 27 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5073 [inline] __schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388 schedule+0xd2/0x1f0 kernel/sched/core.c:6460 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1860 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x373/0x530 kernel/sched/completion.c:106 r871xu_dev_remove+0x6e/0x2c0 drivers/staging/rtl8712/usb_intf.c:597 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:532 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:524 __device_release_driver drivers/base/dd.c:1200 [inline] device_release_driver_internal+0x4a3/0x680 drivers/base/dd.c:1223 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3592 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x278/0x6ec drivers/usb/core/hub.c:2228 hub_port_connect drivers/usb/core/hub.c:5207 [inline] hub_port_connect_change drivers/usb/core/hub.c:5507 [inline] port_event drivers/usb/core/hub.c:5665 [inline] hub_event+0x1e74/0x4680 drivers/usb/core/hub.c:5747 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x854/0x1080 kernel/workqueue.c:2438 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 INFO: task kworker/1:2:140 blocked for more than 143 seconds. Not tainted 5.18.0-rc3-syzkaller-00218-g13bc32bad705 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack:24888 pid: 140 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5073 [inline] __schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388 schedule+0xd2/0x1f0 kernel/sched/core.c:6460 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6519 __mutex_lock_common kernel/locking/mutex.c:673 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733 unregister_netdev+0xe/0x20 net/core/dev.c:10809 r871xu_dev_remove+0x24f/0x2c0 drivers/staging/rtl8712/usb_intf.c:599 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:532 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:524 __device_release_driver drivers/base/dd.c:1200 [inline] device_release_driver_internal+0x4a3/0x680 drivers/base/dd.c:1223 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3592 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x278/0x6ec drivers/usb/core/hub.c:2228 hub_port_connect drivers/usb/core/hub.c:5207 [inline] hub_port_connect_change drivers/usb/core/hub.c:5507 [inline] port_event drivers/usb/core/hub.c:5665 [inline] hub_event+0x1e74/0x4680 drivers/usb/core/hub.c:5747 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x854/0x1080 kernel/workqueue.c:2438 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 INFO: task kworker/0:2:142 blocked for more than 143 seconds. Not tainted 5.18.0-rc3-syzkaller-00218-g13bc32bad705 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:2 state:D stack:24968 pid: 142 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5073 [inline] __schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388 schedule+0xd2/0x1f0 kernel/sched/core.c:6460 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6519 __mutex_lock_common kernel/locking/mutex.c:673 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733 unregister_netdev+0xe/0x20 net/core/dev.c:10809 r871xu_dev_remove+0x24f/0x2c0 drivers/staging/rtl8712/usb_intf.c:599 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:532 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:524 __device_release_driver drivers/base/dd.c:1200 [inline] device_release_driver_internal+0x4a3/0x680 drivers/base/dd.c:1223 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3592 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x278/0x6ec drivers/usb/core/hub.c:2228 hub_port_connect drivers/usb/core/hub.c:5207 [inline] hub_port_connect_change drivers/usb/core/hub.c:5507 [inline] port_event drivers/usb/core/hub.c:5665 [inline] hub_event+0x1e74/0x4680 drivers/usb/core/hub.c:5747 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x854/0x1080 kernel/workqueue.c:2438 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 INFO: task kworker/0:3:3325 blocked for more than 144 seconds. Not tainted 5.18.0-rc3-syzkaller-00218-g13bc32bad705 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:3 state:D stack:24888 pid: 3325 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5073 [inline] __schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388 schedule+0xd2/0x1f0 kernel/sched/core.c:6460 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1860 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x373/0x530 kernel/sched/completion.c:106 r871xu_dev_remove+0x6e/0x2c0 drivers/staging/rtl8712/usb_intf.c:597 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:532 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:524 __device_release_driver drivers/base/dd.c:1200 [inline] device_release_driver_internal+0x4a3/0x680 drivers/base/dd.c:1223 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3592 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x278/0x6ec drivers/usb/core/hub.c:2228 hub_port_connect drivers/usb/core/hub.c:5207 [inline] hub_port_connect_change drivers/usb/core/hub.c:5507 [inline] port_event drivers/usb/core/hub.c:5665 [inline] hub_event+0x1e74/0x4680 drivers/usb/core/hub.c:5747 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x854/0x1080 kernel/workqueue.c:2438 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 INFO: task kworker/0:0:3643 blocked for more than 144 seconds. Not tainted 5.18.0-rc3-syzkaller-00218-g13bc32bad705 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:24808 pid: 3643 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5073 [inline] __schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388 schedule+0xd2/0x1f0 kernel/sched/core.c:6460 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1860 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x373/0x530 kernel/sched/completion.c:106 r871xu_dev_remove+0x6e/0x2c0 drivers/staging/rtl8712/usb_intf.c:597 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:532 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:524 __device_release_driver drivers/base/dd.c:1200 [inline] device_release_driver_internal+0x4a3/0x680 drivers/base/dd.c:1223 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3592 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x278/0x6ec drivers/usb/core/hub.c:2228 hub_port_connect drivers/usb/core/hub.c:5207 [inline] hub_port_connect_change drivers/usb/core/hub.c:5507 [inline] port_event drivers/usb/core/hub.c:5665 [inline] hub_event+0x1e74/0x4680 drivers/usb/core/hub.c:5747 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x854/0x1080 kernel/workqueue.c:2438 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 INFO: task kworker/0:1:3645 blocked for more than 144 seconds. Not tainted 5.18.0-rc3-syzkaller-00218-g13bc32bad705 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:1 state:D stack:25072 pid: 3645 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5073 [inline] __schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388 schedule+0xd2/0x1f0 kernel/sched/core.c:6460 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1860 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x373/0x530 kernel/sched/completion.c:106 r871xu_dev_remove+0x6e/0x2c0 drivers/staging/rtl8712/usb_intf.c:597 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:532 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:524 __device_release_driver drivers/base/dd.c:1200 [inline] device_release_driver_internal+0x4a3/0x680 drivers/base/dd.c:1223 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3592 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x278/0x6ec drivers/usb/core/hub.c:2228 hub_port_connect drivers/usb/core/hub.c:5207 [inline] hub_port_connect_change drivers/usb/core/hub.c:5507 [inline] port_event drivers/usb/core/hub.c:5665 [inline] hub_event+0x1e74/0x4680 drivers/usb/core/hub.c:5747 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x854/0x1080 kernel/workqueue.c:2438 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Showing all locks held in the system: 5 locks held by kworker/u4:0/8: 5 locks held by kworker/1:1/27: #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90000e2fda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff88823bc3e220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #2: ffff88823bc3e220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4680 drivers/usb/core/hub.c:5693 #3: ffff888075e7d220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #3: ffff888075e7d220 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x6ec drivers/usb/core/hub.c:2219 #4: ffff888074e361a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #4: ffff888074e361a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1033 [inline] #4: ffff888074e361a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa0/0x680 drivers/base/dd.c:1220 1 lock held by khungtaskd/28: #0: ffffffff8bd820e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6467 6 locks held by kworker/1:2/140: #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc9000275fda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff88801e7d9220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #2: ffff88801e7d9220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4680 drivers/usb/core/hub.c:5693 #3: ffff88814bdca220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #3: ffff88814bdca220 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x6ec drivers/usb/core/hub.c:2219 #4: ffff88801f77a1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #4: ffff88801f77a1a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1033 [inline] #4: ffff88801f77a1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa0/0x680 drivers/base/dd.c:1220 #5: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: unregister_netdev+0xe/0x20 net/core/dev.c:10809 6 locks held by kworker/0:2/142: #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc9000279fda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff8881487c8220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #2: ffff8881487c8220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4680 drivers/usb/core/hub.c:5693 #3: ffff888078ee8220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #3: ffff888078ee8220 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x6ec drivers/usb/core/hub.c:2219 #4: ffff88807068f1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #4: ffff88807068f1a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1033 [inline] #4: ffff88807068f1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa0/0x680 drivers/base/dd.c:1220 #5: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: unregister_netdev+0xe/0x20 net/core/dev.c:10809 1 lock held by klogd/2951: #0: ffff8880b9c3a018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:554 2 locks held by dhcpcd/3173: #0: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x1b3/0x1ca0 net/ipv4/devinet.c:1072 #1: ffff88802164cee0 (&padapter->mutex_start){+.+.}-{3:3}, at: netdev_open+0x2e/0x690 drivers/staging/rtl8712/os_intfs.c:375 2 locks held by getty/3275: #0: ffff88814864a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc90002b832e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcea/0x1230 drivers/tty/n_tty.c:2075 5 locks held by kworker/0:3/3325: #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90002ecfda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff88801e709220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #2: ffff88801e709220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4680 drivers/usb/core/hub.c:5693 #3: ffff88807c4a1220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #3: ffff88807c4a1220 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x6ec drivers/usb/core/hub.c:2219 #4: ffff8880226c51a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #4: ffff8880226c51a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1033 [inline] #4: ffff8880226c51a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa0/0x680 drivers/base/dd.c:1220 5 locks held by kworker/0:0/3643: #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc900031dfda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff8881487e0220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #2: ffff8881487e0220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4680 drivers/usb/core/hub.c:5693 #3: ffff888076f29220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #3: ffff888076f29220 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x6ec drivers/usb/core/hub.c:2219 #4: ffff88807d3d71a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #4: ffff88807d3d71a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1033 [inline] #4: ffff88807d3d71a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa0/0x680 drivers/base/dd.c:1220 5 locks held by kworker/0:1/3645: #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888145693938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc900031ffda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff8881487b0220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #2: ffff8881487b0220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4680 drivers/usb/core/hub.c:5693 #3: ffff888076f2b220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #3: ffff888076f2b220 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x6ec drivers/usb/core/hub.c:2219 #4: ffff8880169d91a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #4: ffff8880169d91a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1033 [inline] #4: ffff8880169d91a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa0/0x680 drivers/base/dd.c:1220 3 locks held by kworker/0:4/3646: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc9000320fda8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 3 locks held by kworker/1:0/3647: #0: ffff888023599938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888023599938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888023599938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888023599938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888023599938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888023599938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc9000321fda8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xe/0x20 net/ipv6/addrconf.c:4603 3 locks held by udevd/3648: #0: ffff8880798adc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline] #0: ffff8880798adc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x189/0x6f0 fs/kernfs/file.c:237 #1: ffff888070d1c008 (kn->active#86){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:199 [inline] #1: ffff888070d1c008 (kn->active#86){++++}-{0:0}, at: kernfs_fop_read_iter+0x1ac/0x6f0 fs/kernfs/file.c:237 #2: ffff88814bdca220 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:772 [inline] #2: ffff88814bdca220 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873 3 locks held by kworker/0:5/3649: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc9000323fda8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 3 locks held by udevd/3652: #0: ffff888023475c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline] #0: ffff888023475c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x189/0x6f0 fs/kernfs/file.c:237 #1: ffff888019e1a578 (kn->active#86){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:199 [inline] #1: ffff888019e1a578 (kn->active#86){++++}-{0:0}, at: kernfs_fop_read_iter+0x1ac/0x6f0 fs/kernfs/file.c:237 #2: ffff888078ee8220 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:772 [inline] #2: ffff888078ee8220 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873 3 locks held by udevd/3655: #0: ffff88807c1fc088 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline] #0: ffff88807c1fc088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x189/0x6f0 fs/kernfs/file.c:237 #1: ffff88801e728cb8 (kn->active#86){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:199 [inline] #1: ffff88801e728cb8 (kn->active#86){++++}-{0:0}, at: kernfs_fop_read_iter+0x1ac/0x6f0 fs/kernfs/file.c:237 #2: ffff888076f29220 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:772 [inline] #2: ffff888076f29220 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873 3 locks held by kworker/1:4/3659: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc9000312fda8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 3 locks held by udevd/3660: #0: ffff88801fa7f088 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline] #0: ffff88801fa7f088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x189/0x6f0 fs/kernfs/file.c:237 #1: ffff888140dffda0 (kn->active#86){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:199 [inline] #1: ffff888140dffda0 (kn->active#86){++++}-{0:0}, at: kernfs_fop_read_iter+0x1ac/0x6f0 fs/kernfs/file.c:237 #2: ffff888075e7d220 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:772 [inline] #2: ffff888075e7d220 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873 3 locks held by kworker/0:6/3684: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90003337da8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 3 locks held by kworker/1:5/3715: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc9000337fda8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 3 locks held by kworker/0:7/3755: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc9000339fda8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 3 locks held by kworker/0:8/3756: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90003327da8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 3 locks held by kworker/0:9/3758: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc900033ffda8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 3 locks held by kworker/1:6/3762: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90003317da8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 3 locks held by kworker/0:10/3861: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc900034c7da8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 3 locks held by kworker/0:11/3862: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc9000359fda8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 4 locks held by udevd/3918: #0: ffff88807b9799e0 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xdf/0x1280 fs/seq_file.c:182 #1: ffff88801ad29488 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x47/0x440 fs/kernfs/file.c:112 #2: ffff88814532bae8 (kn->active#89){++++}-{0:0}, at: kernfs_seq_start+0x71/0x440 fs/kernfs/file.c:113 #3: ffff88807c4a1220 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:772 [inline] #3: ffff88807c4a1220 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x22/0xa0 drivers/usb/core/sysfs.c:141 3 locks held by kworker/1:7/3993: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90003747da8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 3 locks held by kworker/1:8/3997: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc9000362fda8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 3 locks held by kworker/0:12/4476: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90003967da8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 3 locks held by kworker/0:13/4477: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90003befda8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 3 locks held by kworker/0:14/4480: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90003c27da8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 3 locks held by kworker/0:15/4481: #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90003cffda8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffffffff8d565a68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10085 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 5.18.0-rc3-syzkaller-00218-g13bc32bad705 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 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+0xc1d/0xf50 kernel/hung_task.c:369 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3636 Comm: syz-executor223 Not tainted 5.18.0-rc3-syzkaller-00218-g13bc32bad705 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:hlist_add_head include/linux/list.h:891 [inline] RIP: 0010:__free_object+0x598/0xe00 lib/debugobjects.c:359 Code: 48 2b 04 25 28 00 00 00 0f 85 06 07 00 00 48 81 c4 20 01 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df <4c> 89 e2 48 c1 ea 03 80 3c 02 00 0f 85 03 08 00 00 48 89 ca 49 8b RSP: 0018:ffffc9000316fbc8 EFLAGS: 00000097 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff88807eb52b28 RDX: ffff88807eb52b28 RSI: 1ffff11017386d97 RDI: ffff8880b9c36cb8 RBP: ffff88807eb52b28 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff817f779d R11: 0000000000000001 R12: ffff8880b9c36cb0 R13: ffffffff89ce5f20 R14: ffffc9000316fd98 R15: ffffffff907f5ed0 FS: 0000555556781300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa7dc1f2c40 CR3: 0000000070d3b000 CR4: 0000000000350ef0 Call Trace: free_object lib/debugobjects.c:430 [inline] debug_object_free lib/debugobjects.c:853 [inline] debug_object_free+0x1c8/0x350 lib/debugobjects.c:825 destroy_hrtimer_on_stack kernel/time/hrtimer.c:452 [inline] hrtimer_nanosleep+0x22b/0x4a0 kernel/time/hrtimer.c:2112 common_nsleep+0xa2/0xc0 kernel/time/posix-timers.c:1227 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1267 [inline] __se_sys_clock_nanosleep kernel/time/posix-timers.c:1245 [inline] __x64_sys_clock_nanosleep+0x2f4/0x430 kernel/time/posix-timers.c:1245 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fa7dc24209a 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:00007ffde3942310 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fa7dc24209a RDX: 00007ffde3942350 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 000000000000124e R08: 000000000000035e R09: 00007ffde3988080 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000d1bf4 R13: 00007ffde394238c R14: 00007ffde39423a0 R15: 00007ffde3942390 ---------------- Code disassembly (best guess): 0: 48 2b 04 25 28 00 00 sub 0x28,%rax 7: 00 8: 0f 85 06 07 00 00 jne 0x714 e: 48 81 c4 20 01 00 00 add $0x120,%rsp 15: 5b pop %rbx 16: 5d pop %rbp 17: 41 5c pop %r12 19: 41 5d pop %r13 1b: 41 5e pop %r14 1d: 41 5f pop %r15 1f: c3 retq 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 4c 89 e2 mov %r12,%rdx <-- trapping instruction 2d: 48 c1 ea 03 shr $0x3,%rdx 31: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 35: 0f 85 03 08 00 00 jne 0x83e 3b: 48 89 ca mov %rcx,%rdx 3e: 49 rex.WB 3f: 8b .byte 0x8b