INFO: task kworker/0:0:7 blocked for more than 143 seconds. Not tainted 6.2.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:24288 pid:7 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0xb4a/0x5410 kernel/sched/core.c:6555 schedule+0xde/0x1b0 kernel/sched/core.c:6631 schedule_timeout+0x1a3/0x260 kernel/time/timer.c:2143 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x1ce/0x5c0 kernel/sched/completion.c:106 r871xu_dev_remove+0x69/0x3f0 drivers/staging/rtl8712/usb_intf.c:595 usb_unbind_interface+0x187/0x7f0 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1253 [inline] device_release_driver_internal+0x3c0/0x600 drivers/base/dd.c:1279 bus_remove_device+0x299/0x550 drivers/base/bus.c:529 device_del+0x491/0xb80 drivers/base/core.c:3666 usb_disable_device+0x2a0/0x660 drivers/usb/core/message.c:1420 usb_disconnect.cold+0x1f5/0x623 drivers/usb/core/hub.c:2235 hub_port_connect drivers/usb/core/hub.c:5244 [inline] hub_port_connect_change drivers/usb/core/hub.c:5549 [inline] port_event drivers/usb/core/hub.c:5709 [inline] hub_event+0x17a0/0x3ce0 drivers/usb/core/hub.c:5791 process_one_work+0x8ba/0x14c0 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x73c/0xec0 kernel/workqueue.c:2438 kthread+0x298/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 INFO: task kworker/0:1:14 blocked for more than 143 seconds. Not tainted 6.2.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:1 state:D stack:24840 pid:14 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0xb4a/0x5410 kernel/sched/core.c:6555 schedule+0xde/0x1b0 kernel/sched/core.c:6631 schedule_timeout+0x1a3/0x260 kernel/time/timer.c:2143 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x1ce/0x5c0 kernel/sched/completion.c:106 r871xu_dev_remove+0x69/0x3f0 drivers/staging/rtl8712/usb_intf.c:595 usb_unbind_interface+0x187/0x7f0 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1253 [inline] device_release_driver_internal+0x3c0/0x600 drivers/base/dd.c:1279 bus_remove_device+0x299/0x550 drivers/base/bus.c:529 device_del+0x491/0xb80 drivers/base/core.c:3666 usb_disable_device+0x2a0/0x660 drivers/usb/core/message.c:1420 usb_disconnect.cold+0x1f5/0x623 drivers/usb/core/hub.c:2235 hub_port_connect drivers/usb/core/hub.c:5244 [inline] hub_port_connect_change drivers/usb/core/hub.c:5549 [inline] port_event drivers/usb/core/hub.c:5709 [inline] hub_event+0x17a0/0x3ce0 drivers/usb/core/hub.c:5791 process_one_work+0x8ba/0x14c0 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x73c/0xec0 kernel/workqueue.c:2438 kthread+0x298/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 INFO: task kworker/1:1:26 blocked for more than 143 seconds. Not tainted 6.2.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:24840 pid:26 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0xb4a/0x5410 kernel/sched/core.c:6555 schedule+0xde/0x1b0 kernel/sched/core.c:6631 schedule_timeout+0x1a3/0x260 kernel/time/timer.c:2143 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x1ce/0x5c0 kernel/sched/completion.c:106 r871xu_dev_remove+0x69/0x3f0 drivers/staging/rtl8712/usb_intf.c:595 usb_unbind_interface+0x187/0x7f0 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1253 [inline] device_release_driver_internal+0x3c0/0x600 drivers/base/dd.c:1279 bus_remove_device+0x299/0x550 drivers/base/bus.c:529 device_del+0x491/0xb80 drivers/base/core.c:3666 usb_disable_device+0x2a0/0x660 drivers/usb/core/message.c:1420 usb_disconnect.cold+0x1f5/0x623 drivers/usb/core/hub.c:2235 hub_port_connect drivers/usb/core/hub.c:5244 [inline] hub_port_connect_change drivers/usb/core/hub.c:5549 [inline] port_event drivers/usb/core/hub.c:5709 [inline] hub_event+0x17a0/0x3ce0 drivers/usb/core/hub.c:5791 process_one_work+0x8ba/0x14c0 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x73c/0xec0 kernel/workqueue.c:2438 kthread+0x298/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 INFO: task kworker/1:3:4363 blocked for more than 144 seconds. Not tainted 6.2.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:3 state:D stack:24544 pid:4363 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0xb4a/0x5410 kernel/sched/core.c:6555 schedule+0xde/0x1b0 kernel/sched/core.c:6631 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 unregister_netdev+0xd/0x20 net/core/dev.c:10912 r871xu_dev_remove+0x226/0x3f0 drivers/staging/rtl8712/usb_intf.c:597 usb_unbind_interface+0x187/0x7f0 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1253 [inline] device_release_driver_internal+0x3c0/0x600 drivers/base/dd.c:1279 bus_remove_device+0x299/0x550 drivers/base/bus.c:529 device_del+0x491/0xb80 drivers/base/core.c:3666 usb_disable_device+0x2a0/0x660 drivers/usb/core/message.c:1420 usb_disconnect.cold+0x1f5/0x623 drivers/usb/core/hub.c:2235 hub_port_connect drivers/usb/core/hub.c:5244 [inline] hub_port_connect_change drivers/usb/core/hub.c:5549 [inline] port_event drivers/usb/core/hub.c:5709 [inline] hub_event+0x17a0/0x3ce0 drivers/usb/core/hub.c:5791 process_one_work+0x8ba/0x14c0 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x73c/0xec0 kernel/workqueue.c:2438 kthread+0x298/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 INFO: task kworker/0:4:5056 blocked for more than 144 seconds. Not tainted 6.2.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:4 state:D stack:24944 pid:5056 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0xb4a/0x5410 kernel/sched/core.c:6555 schedule+0xde/0x1b0 kernel/sched/core.c:6631 schedule_timeout+0x1a3/0x260 kernel/time/timer.c:2143 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x1ce/0x5c0 kernel/sched/completion.c:106 r871xu_dev_remove+0x69/0x3f0 drivers/staging/rtl8712/usb_intf.c:595 usb_unbind_interface+0x187/0x7f0 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1253 [inline] device_release_driver_internal+0x3c0/0x600 drivers/base/dd.c:1279 bus_remove_device+0x299/0x550 drivers/base/bus.c:529 device_del+0x491/0xb80 drivers/base/core.c:3666 usb_disable_device+0x2a0/0x660 drivers/usb/core/message.c:1420 usb_disconnect.cold+0x1f5/0x623 drivers/usb/core/hub.c:2235 hub_port_connect drivers/usb/core/hub.c:5244 [inline] hub_port_connect_change drivers/usb/core/hub.c:5549 [inline] port_event drivers/usb/core/hub.c:5709 [inline] hub_event+0x17a0/0x3ce0 drivers/usb/core/hub.c:5791 process_one_work+0x8ba/0x14c0 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x73c/0xec0 kernel/workqueue.c:2438 kthread+0x298/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 INFO: task kworker/1:7:5552 blocked for more than 144 seconds. Not tainted 6.2.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:7 state:D stack:24944 pid:5552 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0xb4a/0x5410 kernel/sched/core.c:6555 schedule+0xde/0x1b0 kernel/sched/core.c:6631 schedule_timeout+0x1a3/0x260 kernel/time/timer.c:2143 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x1ce/0x5c0 kernel/sched/completion.c:106 r871xu_dev_remove+0x69/0x3f0 drivers/staging/rtl8712/usb_intf.c:595 usb_unbind_interface+0x187/0x7f0 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1253 [inline] device_release_driver_internal+0x3c0/0x600 drivers/base/dd.c:1279 bus_remove_device+0x299/0x550 drivers/base/bus.c:529 device_del+0x491/0xb80 drivers/base/core.c:3666 usb_disable_device+0x2a0/0x660 drivers/usb/core/message.c:1420 usb_disconnect.cold+0x1f5/0x623 drivers/usb/core/hub.c:2235 hub_port_connect drivers/usb/core/hub.c:5244 [inline] hub_port_connect_change drivers/usb/core/hub.c:5549 [inline] port_event drivers/usb/core/hub.c:5709 [inline] hub_event+0x17a0/0x3ce0 drivers/usb/core/hub.c:5791 process_one_work+0x8ba/0x14c0 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x73c/0xec0 kernel/workqueue.c:2438 kthread+0x298/0x340 kernel/kthread.c:376 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: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc900000c7db8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffff888146dcd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #2: ffff888146dcd190 (&dev->mutex){....}-{3:3}, at: hub_event+0x129/0x3ce0 drivers/usb/core/hub.c:5737 #3: ffff88807b262190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #3: ffff88807b262190 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x623 drivers/usb/core/hub.c:2226 #4: ffff88801594b118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #4: ffff88801594b118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1073 [inline] #4: ffff88801594b118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x8c/0x600 drivers/base/dd.c:1276 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8b17f7d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/13: #0: ffffffff8b17f4d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 5 locks held by kworker/0:1/14: #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc90000137db8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffff888146d35190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #2: ffff888146d35190 (&dev->mutex){....}-{3:3}, at: hub_event+0x129/0x3ce0 drivers/usb/core/hub.c:5737 #3: ffff88807b260190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #3: ffff88807b260190 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x623 drivers/usb/core/hub.c:2226 #4: ffff888015097118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #4: ffff888015097118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1073 [inline] #4: ffff888015097118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x8c/0x600 drivers/base/dd.c:1276 3 locks held by kworker/1:0/22: #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc900001c7db8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffffffff8c8d1b68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x40 net/core/dev.c:10171 5 locks held by kworker/1:1/26: #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc90000a1fdb8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffff888146dfd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #2: ffff888146dfd190 (&dev->mutex){....}-{3:3}, at: hub_event+0x129/0x3ce0 drivers/usb/core/hub.c:5737 #3: ffff88806c5f9190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #3: ffff88806c5f9190 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x623 drivers/usb/core/hub.c:2226 #4: ffff88806dc63118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #4: ffff88806dc63118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1073 [inline] #4: ffff88806dc63118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x8c/0x600 drivers/base/dd.c:1276 1 lock held by khungtaskd/28: #0: ffffffff8b180320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494 3 locks held by kworker/0:2/892: #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc90004ab7db8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffffffff8c8d1b68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x40 net/core/dev.c:10171 3 locks held by kworker/1:2/2554: #0: ffff888149d93538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888149d93538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888149d93538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888149d93538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888149d93538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888149d93538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc9000b14fdb8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffffffff8c8d1b68 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xd/0x20 net/ipv6/addrconf.c:4624 6 locks held by kworker/1:3/4363: #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc90005ee7db8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffff888146db5190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #2: ffff888146db5190 (&dev->mutex){....}-{3:3}, at: hub_event+0x129/0x3ce0 drivers/usb/core/hub.c:5737 #3: ffff88801b978190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #3: ffff88801b978190 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x623 drivers/usb/core/hub.c:2226 #4: ffff88806c5fe118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #4: ffff88806c5fe118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1073 [inline] #4: ffff88806c5fe118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x8c/0x600 drivers/base/dd.c:1276 #5: ffffffff8c8d1b68 (rtnl_mutex){+.+.}-{3:3}, at: unregister_netdev+0xd/0x20 net/core/dev.c:10912 2 locks held by dhcpcd/4613: #0: ffffffff8c8d1b68 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x186/0x1770 net/ipv4/devinet.c:1071 #1: ffff888069bb4df0 (&padapter->mutex_start){+.+.}-{3:3}, at: netdev_open+0x34/0x5f0 drivers/staging/rtl8712/os_intfs.c:391 2 locks held by getty/4714: #0: ffff888029843098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x23/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xb73/0x1040 drivers/tty/n_tty.c:2177 3 locks held by kworker/1:4/5052: #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc90003a5fdb8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffffffff8c8d1b68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x40 net/core/dev.c:10171 3 locks held by kworker/1:5/5053: #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc90003a6fdb8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffffffff8c8d1b68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x40 net/core/dev.c:10171 5 locks held by kworker/0:4/5056: #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc90003a9fdb8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffff888146d6d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #2: ffff888146d6d190 (&dev->mutex){....}-{3:3}, at: hub_event+0x129/0x3ce0 drivers/usb/core/hub.c:5737 #3: ffff88807332e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #3: ffff88807332e190 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x623 drivers/usb/core/hub.c:2226 #4: ffff88807b266118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #4: ffff88807b266118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1073 [inline] #4: ffff88807b266118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x8c/0x600 drivers/base/dd.c:1276 3 locks held by udevd/5405: #0: ffff88806ced3888 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:240 [inline] #0: ffff88806ced3888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x163/0x6e0 fs/kernfs/file.c:280 #1: ffff88801ec95008 (kn->active#27){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:241 [inline] #1: ffff88801ec95008 (kn->active#27){++++}-{0:0}, at: kernfs_fop_read_iter+0x186/0x6e0 fs/kernfs/file.c:280 #2: ffff88801b978190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:836 [inline] #2: ffff88801b978190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3a/0x310 drivers/usb/core/sysfs.c:874 3 locks held by udevd/5487: #0: ffff888029bcf088 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:240 [inline] #0: ffff888029bcf088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x163/0x6e0 fs/kernfs/file.c:280 #1: ffff88802622da00 (kn->active#27){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:241 [inline] #1: ffff88802622da00 (kn->active#27){++++}-{0:0}, at: kernfs_fop_read_iter+0x186/0x6e0 fs/kernfs/file.c:280 #2: ffff88806dc64190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:836 [inline] #2: ffff88806dc64190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3a/0x310 drivers/usb/core/sysfs.c:874 5 locks held by kworker/1:7/5552: #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888140129538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc900050dfdb8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffff888146de5190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #2: ffff888146de5190 (&dev->mutex){....}-{3:3}, at: hub_event+0x129/0x3ce0 drivers/usb/core/hub.c:5737 #3: ffff88806dc64190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #3: ffff88806dc64190 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x623 drivers/usb/core/hub.c:2226 #4: ffff888071c3d118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #4: ffff888071c3d118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1073 [inline] #4: ffff888071c3d118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x8c/0x600 drivers/base/dd.c:1276 3 locks held by kworker/0:6/5556: #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc900050ffdb8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffffffff8c8d1b68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x40 net/core/dev.c:10171 3 locks held by kworker/0:7/5609: #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc90004f3fdb8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffffffff8c8d1b68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x40 net/core/dev.c:10171 3 locks held by kworker/0:8/5615: #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc9000523fdb8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffffffff8c8d1b68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x40 net/core/dev.c:10171 3 locks held by kworker/0:9/5625: #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc900052efdb8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffffffff8c8d1b68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x40 net/core/dev.c:10171 3 locks held by kworker/1:8/5629: #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc9000530fdb8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffffffff8c8d1b68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x40 net/core/dev.c:10171 3 locks held by kworker/1:9/5630: #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc9000531fdb8 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffffffff8c8d1b68 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0x9/0x20 net/switchdev/switchdev.c:75 3 locks held by kworker/0:10/5633: #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc9000521fdb8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffffffff8c8d1b68 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x40 net/core/dev.c:10171 3 locks held by udevd/5780: #0: ffff88806e561c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:240 [inline] #0: ffff88806e561c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x163/0x6e0 fs/kernfs/file.c:280 #1: ffff88806ebb7918 (kn->active#27){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:241 [inline] #1: ffff88806ebb7918 (kn->active#27){++++}-{0:0}, at: kernfs_fop_read_iter+0x186/0x6e0 fs/kernfs/file.c:280 #2: ffff88807332e190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:836 [inline] #2: ffff88807332e190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3a/0x310 drivers/usb/core/sysfs.c:874 3 locks held by kworker/0:11/8182: #0: ffff888149d93538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888149d93538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888149d93538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888149d93538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888149d93538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888149d93538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14c0 kernel/workqueue.c:2260 #1: ffffc9000a74fdb8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14c0 kernel/workqueue.c:2264 #2: ffffffff8c8d1b68 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xd/0x20 net/ipv6/addrconf.c:4624 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x5b/0x81 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x18/0x106 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x259/0x2d0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0x8c8/0xc60 kernel/hung_task.c:377 kthread+0x298/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 1016 Comm: kworker/u4:5 Not tainted 6.2.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: phy8 ieee80211_iface_work RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:183 [inline] RIP: 0010:unwind_next_frame+0x1cf/0x1d00 arch/x86/kernel/unwind_orc.c:467 Code: ff 41 39 c7 0f 83 e3 13 00 00 48 b8 00 00 00 00 00 fc ff df 44 89 fa 48 8d 3c 95 1c b7 14 8e 48 89 f9 48 c1 e9 03 0f b6 0c 01 <48> 89 f8 83 e0 07 83 c0 03 38 c8 7c 1d 84 c9 74 19 48 89 54 24 28 RSP: 0018:ffffc9000507f778 EFLAGS: 00000a03 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 000000000000b552 RSI: ffffffff81b55280 RDI: ffffffff8e178c64 RBP: ffffc9000507f830 R08: ffffffff8aff8960 R09: ffffc9000507f81c R10: fffff52000a0ff08 R11: 0000000000080001 R12: ffffc9000507f81d R13: ffffc9000507f7e8 R14: ffffffff81b5527f R15: 000000000000b552 FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7c84dfd110 CR3: 000000001ff2b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0x81/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x90/0xc0 kernel/stacktrace.c:122 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2e/0x40 mm/kasan/generic.c:518 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1781 [inline] slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1807 slab_free mm/slub.c:3787 [inline] __kmem_cache_free+0xaf/0x3b0 mm/slub.c:3800 skb_release_data+0x46f/0x6a0 net/core/skbuff.c:851 skb_release_all net/core/skbuff.c:916 [inline] __kfree_skb net/core/skbuff.c:930 [inline] kfree_skb_reason+0x12a/0x370 net/core/skbuff.c:956 kfree_skb include/linux/skbuff.h:1218 [inline] ieee80211_iface_work+0x271/0x9e0 net/mac80211/iface.c:1637 process_one_work+0x8ba/0x14c0 kernel/workqueue.c:2289 worker_thread+0x59c/0xec0 kernel/workqueue.c:2436 kthread+0x298/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308