INFO: task kworker/1:0:17 blocked for more than 143 seconds. Not tainted 5.7.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:0 D24832 17 2 0x80004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:3367 [inline] __schedule+0x892/0x1d80 kernel/sched/core.c:4083 lock_downgrade+0x720/0x720 kernel/locking/lockdep.c:4599 __sched_text_start+0x8/0x8 mark_held_locks+0xe0/0xe0 kernel/locking/lockdep.c:3620 __trace_hardirqs_on_caller kernel/locking/lockdep.c:3657 [inline] lockdep_hardirqs_on+0x3c7/0x5d0 kernel/locking/lockdep.c:3702 schedule+0xcd/0x2b0 kernel/sched/core.c:4158 schedule_timeout+0x501/0x7d0 kernel/time/timer.c:1874 trace_hardirqs_on_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:41 usleep_range+0x160/0x160 kernel/time/timer.c:2093 retint_kernel+0x10/0x10 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x16f/0x280 kernel/sched/completion.c:138 atomic64_cmpxchg include/asm-generic/atomic-instrumented.h:1463 [inline] atomic_long_cmpxchg_release include/asm-generic/atomic-long.h:424 [inline] __mutex_unlock_slowpath+0xe2/0x660 kernel/locking/mutex.c:1249 wait_for_completion_interruptible+0x2f0/0x2f0 kernel/sched/completion.c:89 flush_workqueue_prep_pwqs+0x298/0x4e0 kernel/workqueue.c:2757 to_kthread kernel/kthread.c:76 [inline] kthread_data+0x4f/0xc0 kernel/kthread.c:165 check_flush_dependency+0x2e2/0x400 kernel/workqueue.c:2606 flush_workqueue+0x403/0x14f0 kernel/workqueue.c:2831 pwq_unbound_release_workfn+0x2d0/0x2d0 include/linux/list.h:135 ath6kl_usb_submit_ctrl_in.constprop.0+0x100/0x170 drivers/net/wireless/ath/ath6kl/usb.c:922 ath6kl_bmi_done+0x180/0x180 drivers/net/wireless/ath/ath6kl/hif-ops.h:122 set_track mm/kasan/common.c:57 [inline] __kasan_kmalloc mm/kasan/common.c:495 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:468 hif_detach_htc drivers/net/wireless/ath/ath6kl/usb.c:856 [inline] ath6kl_usb_power_off+0x33/0x40 drivers/net/wireless/ath/ath6kl/usb.c:1055 hif_detach_htc drivers/net/wireless/ath/ath6kl/usb.c:856 [inline] ath6kl_usb_power_off+0x33/0x40 drivers/net/wireless/ath/ath6kl/usb.c:1055 ath6kl_hif_power_off drivers/net/wireless/ath/ath6kl/hif-ops.h:143 [inline] ath6kl_core_init drivers/net/wireless/ath/ath6kl/core.c:255 [inline] ath6kl_core_init+0x236/0x10d0 drivers/net/wireless/ath/ath6kl/core.c:66 set_track mm/kasan/common.c:57 [inline] __kasan_kmalloc mm/kasan/common.c:495 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:468 lockdep_init_map_waits+0x26a/0x7c0 kernel/locking/lockdep.c:4138 ath6kl_core_destroy+0x20/0x20 drivers/net/wireless/ath/ath6kl/core.c:359 memcpy+0x39/0x60 mm/kasan/common.c:107 ath6kl_core_create+0x83d/0xa00 drivers/net/wireless/ath/ath6kl/core.c:324 ath6kl_usb_probe+0xc8f/0x1190 drivers/net/wireless/ath/ath6kl/usb.c:1155 usb_probe_interface+0x310/0x800 drivers/usb/core/driver.c:374 usb_probe_device+0x230/0x230 drivers/usb/core/driver.c:274 really_probe+0x290/0xac0 drivers/base/dd.c:520 driver_probe_device+0x223/0x350 drivers/base/dd.c:697 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:804 driver_allows_async_probing+0x160/0x160 drivers/base/dd.c:737 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:431 bus_rescan_devices+0x20/0x20 drivers/base/bus.c:711 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irqrestore+0x39/0x40 kernel/locking/spinlock.c:191 __trace_hardirqs_on_caller kernel/locking/lockdep.c:3657 [inline] lockdep_hardirqs_on+0x3c7/0x5d0 kernel/locking/lockdep.c:3702 __device_attach+0x21a/0x390 drivers/base/dd.c:870 device_bind_driver+0xd0/0xd0 drivers/base/dd.c:443 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0x1367/0x1c40 drivers/base/core.c:2538 wait_for_completion+0x280/0x280 device_link_remove+0x110/0x110 drivers/base/core.c:628 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irqrestore+0x39/0x40 kernel/locking/spinlock.c:191 usb_set_configuration+0xed4/0x1850 drivers/usb/core/message.c:2032 usb_generic_driver_probe+0x9d/0xe0 drivers/usb/core/generic.c:241 usb_probe_device+0xd9/0x230 drivers/usb/core/driver.c:272 usb_suspend+0x600/0x600 include/linux/pm_wakeup.h:84 really_probe+0x290/0xac0 drivers/base/dd.c:520 driver_probe_device+0x223/0x350 drivers/base/dd.c:697 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:804 driver_allows_async_probing+0x160/0x160 drivers/base/dd.c:737 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:431 bus_rescan_devices+0x20/0x20 drivers/base/bus.c:711 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irqrestore+0x39/0x40 kernel/locking/spinlock.c:191 __trace_hardirqs_on_caller kernel/locking/lockdep.c:3657 [inline] lockdep_hardirqs_on+0x3c7/0x5d0 kernel/locking/lockdep.c:3702 __device_attach+0x21a/0x390 drivers/base/dd.c:870 device_bind_driver+0xd0/0xd0 drivers/base/dd.c:443 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0x1367/0x1c40 drivers/base/core.c:2538 device_link_remove+0x110/0x110 drivers/base/core.c:628 usb_new_device.cold+0x552/0xf6e drivers/usb/core/hub.c:2553 hub_disconnect+0x4a0/0x4a0 drivers/usb/core/hub.c:1735 mark_held_locks+0x9f/0xe0 kernel/locking/lockdep.c:3628 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] _raw_spin_unlock_irq+0x1f/0x30 kernel/locking/spinlock.c:199 hub_port_connect drivers/usb/core/hub.c:5207 [inline] hub_port_connect_change drivers/usb/core/hub.c:5347 [inline] port_event drivers/usb/core/hub.c:5493 [inline] hub_event+0x226d/0x43c0 drivers/usb/core/hub.c:5575 hub_port_debounce+0x350/0x350 drivers/usb/core/hub.c:4440 usermodehelper_read_unlock+0x10/0x20 kernel/umh.c:292 lock_is_held include/linux/lockdep.h:406 [inline] rcu_read_lock_sched_held+0x9c/0xd0 kernel/rcu/update.c:121 rcu_read_lock_bh_held+0xb0/0xb0 kernel/rcu/update.c:333 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] _raw_spin_unlock_irq+0x1f/0x30 kernel/locking/spinlock.c:199 process_one_work+0x965/0x1630 kernel/workqueue.c:2268 lock_release+0x720/0x720 kernel/locking/lockdep.c:4689 pwq_dec_nr_in_flight+0x310/0x310 kernel/workqueue.c:1198 rwlock_bug.part.0+0x90/0x90 include/linux/sched.h:1329 to_kthread kernel/kthread.c:76 [inline] kthread_data+0x4f/0xc0 kernel/kthread.c:165 worker_thread+0x96/0xe20 kernel/workqueue.c:2414 process_one_work+0x1630/0x1630 kernel/workqueue.c:1029 kthread+0x326/0x430 kernel/kthread.c:268 kthread_create_on_node+0xf0/0xf0 kernel/kthread.c:405 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351 INFO: task kworker/0:7:3346 blocked for more than 143 seconds. Not tainted 5.7.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:7 D26536 3346 2 0x80004000 Workqueue: events request_firmware_work_func Call Trace: context_switch kernel/sched/core.c:3367 [inline] __schedule+0x892/0x1d80 kernel/sched/core.c:4083 lock_downgrade+0x720/0x720 kernel/locking/lockdep.c:4599 __sched_text_start+0x8/0x8 __trace_hardirqs_on_caller kernel/locking/lockdep.c:3657 [inline] lockdep_hardirqs_on+0x3c7/0x5d0 kernel/locking/lockdep.c:3702 schedule+0xcd/0x2b0 kernel/sched/core.c:4158 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4217 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x87c/0x1360 kernel/locking/mutex.c:1103 device_lock include/linux/device.h:768 [inline] ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1077 [inline] ath9k_hif_usb_firmware_cb+0x388/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1210 mutex_trylock+0x2c0/0x2c0 kernel/locking/mutex.c:126 ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1074 [inline] ath9k_hif_usb_firmware_cb+0x36d/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1210 print_usage_bug+0x200/0x200 kernel/locking/lockdep.c:101 atomic_try_cmpxchg include/asm-generic/atomic-instrumented.h:694 [inline] queued_spin_lock include/asm-generic/qspinlock.h:78 [inline] do_raw_spin_lock+0x129/0x290 kernel/locking/spinlock_debug.c:113 mark_held_locks+0x9f/0xe0 kernel/locking/lockdep.c:3628 device_lock include/linux/device.h:768 [inline] ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1077 [inline] ath9k_hif_usb_firmware_cb+0x388/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1210 device_lock include/linux/device.h:768 [inline] ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1077 [inline] ath9k_hif_usb_firmware_cb+0x388/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1210 ath9k_hif_usb_resume+0x320/0x320 drivers/net/wireless/ath/ath9k/hif_usb.c:1400 request_firmware_work_func+0x126/0x242 drivers/base/firmware_loader/main.c:1005 request_firmware_into_buf+0x90/0x90 drivers/base/firmware_loader/main.c:968 lock_is_held include/linux/lockdep.h:406 [inline] rcu_read_lock_sched_held+0x9c/0xd0 kernel/rcu/update.c:121 rcu_read_lock_bh_held+0xb0/0xb0 kernel/rcu/update.c:333 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] _raw_spin_unlock_irq+0x1f/0x30 kernel/locking/spinlock.c:199 process_one_work+0x965/0x1630 kernel/workqueue.c:2268 lock_release+0x720/0x720 kernel/locking/lockdep.c:4689 pwq_dec_nr_in_flight+0x310/0x310 kernel/workqueue.c:1198 rwlock_bug.part.0+0x90/0x90 include/linux/sched.h:1329 worker_thread+0x96/0xe20 kernel/workqueue.c:2414 process_one_work+0x1630/0x1630 kernel/workqueue.c:1029 kthread+0x326/0x430 kernel/kthread.c:268 kthread_create_on_node+0xf0/0xf0 kernel/kthread.c:405 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351 Showing all locks held in the system: 2 locks held by kworker/0:0/5: 5 locks held by kworker/1:0/17: #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x844/0x1630 kernel/workqueue.c:2239 #1: ffff8881da25fdc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x878/0x1630 kernel/workqueue.c:2243 #2: ffff8881d4f11218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline] #2: ffff8881d4f11218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x43c0 drivers/usb/core/hub.c:5521 #3: ffff8881d6a1b218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline] #3: ffff8881d6a1b218 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7b/0x390 drivers/base/dd.c:847 #4: ffff8881ac1eb1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline] #4: ffff8881ac1eb1a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7b/0x390 drivers/base/dd.c:847 1 lock held by khungtaskd/23: #0: ffffffff87111260 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x264 kernel/locking/lockdep.c:5754 1 lock held by in:imklog/280: 2 locks held by login/296: #0: ffff8881d3513098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:267 #1: ffffc900005f42e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x220/0x1b30 drivers/tty/n_tty.c:2156 3 locks held by kworker/1:3/3122: #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x844/0x1630 kernel/workqueue.c:2239 #1: ffff8881c3e87dc0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x878/0x1630 kernel/workqueue.c:2243 #2: ffff8881d4f29218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline] #2: ffff8881d4f29218 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1077 [inline] #2: ffff8881d4f29218 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_cb+0x388/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1210 3 locks held by kworker/0:5/3123: #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x844/0x1630 kernel/workqueue.c:2239 #1: ffff8881d26bfdc0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x878/0x1630 kernel/workqueue.c:2243 #2: ffff8881d4e51218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline] #2: ffff8881d4e51218 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1077 [inline] #2: ffff8881d4e51218 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_cb+0x388/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1210 3 locks held by kworker/1:5/3140: 6 locks held by kworker/0:6/3330: #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x844/0x1630 kernel/workqueue.c:2239 #1: ffff8881cbecfdc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x878/0x1630 kernel/workqueue.c:2243 #2: ffff8881d4f29218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline] #2: ffff8881d4f29218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x43c0 drivers/usb/core/hub.c:5521 #3: ffff8881d4f2c588 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3011 [inline] #3: ffff8881d4f2c588 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5138 [inline] #3: ffff8881d4f2c588 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5347 [inline] #3: ffff8881d4f2c588 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5493 [inline] #3: ffff8881d4f2c588 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2050/0x43c0 drivers/usb/core/hub.c:5575 #4: ffff8881d4ed0a68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b6/0x2e20 drivers/usb/core/hub.c:4562 #5: ffffffff8769aa70 (ehci_cf_port_reset_rwsem){.+.+}-{3:3}, at: hub_port_reset+0x186/0x1790 drivers/usb/core/hub.c:2873 3 locks held by kworker/0:7/3346: #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881da028d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x844/0x1630 kernel/workqueue.c:2239 #1: ffff8881c9fefdc0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x878/0x1630 kernel/workqueue.c:2243 #2: ffff8881d4f11218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline] #2: ffff8881d4f11218 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1077 [inline] #2: ffff8881d4f11218 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_cb+0x388/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1210 7 locks held by kworker/0:8/3648: #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline] #0: ffff8881d891e538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x844/0x1630 kernel/workqueue.c:2239 #1: ffff8881c3fefdc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x878/0x1630 kernel/workqueue.c:2243 #2: ffff8881d4e89218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline] #2: ffff8881d4e89218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x43c0 drivers/usb/core/hub.c:5521 #3: ffff8881ce651218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline] #3: ffff8881ce651218 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7b/0x390 drivers/base/dd.c:847 #4: ffff8881cc7321a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline] #4: ffff8881cc7321a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7b/0x390 drivers/base/dd.c:847 #5: ffffffff877e9708 (input_mutex){+.+.}-{3:3}, at: input_register_device.cold+0x5c/0x316 drivers/input/input.c:2222 #6: ffff8881cc68c2c0 (&dev->mutex#2){+.+.}-{3:3}, at: input_open_device+0x4a/0x2c0 drivers/input/input.c:604 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 23 Comm: khungtaskd Not tainted 5.7.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xef/0x16e lib/dump_stack.c:118 irq_force_complete_move.cold+0x13/0x47 arch/x86/kernel/apic/vector.c:1023 nmi_cpu_backtrace.cold+0x70/0xb1 lib/nmi_backtrace.c:101 lapic_can_unplug_cpu.cold+0x3b/0x3b nmi_trigger_cpumask_backtrace+0x1db/0x207 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0xa99/0xfd0 kernel/hung_task.c:289 reset_hung_task_detector+0x30/0x30 kernel/hung_task.c:243 kthread+0x326/0x430 kernel/kthread.c:268 kthread_create_on_node+0xf0/0xf0 kernel/kthread.c:405 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 421 Comm: syz-executor.0 Not tainted 5.7.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lock_is_held_type+0x15/0x290 kernel/locking/lockdep.c:4960 Code: 34 24 e9 63 fe ff ff 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 41 57 49 89 ff 41 56 41 55 41 54 <55> 53 65 48 8b 1c 25 40 0f 02 00 48 8d bb 7c 08 00 00 48 83 ec 18 RSP: 0018:ffff8881db209820 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffff8881d0416380 RCX: 0000000000000000 RDX: 0000000000000007 RSI: 00000000ffffffff RDI: ffffffff87138c38 RBP: ffff8881d55b0400 R08: 0000000000000001 R09: ffffed103b646ae4 R10: ffff8881db23571b R11: ffffed103b646ae3 R12: 0000000000009729 R13: ffff8881d04163d0 R14: ffff8881d0416300 R15: ffffffff87138c38 FS: 0000000001805940(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f95a06ac000 CR3: 00000001c96cb000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_is_held include/linux/lockdep.h:406 [inline] task_css_set include/linux/cgroup.h:481 [inline] task_dfl_cgroup include/linux/cgroup.h:550 [inline] cgroup_account_cputime include/linux/cgroup.h:782 [inline] update_curr+0x5d8/0x830 kernel/sched/fair.c:873 enqueue_entity kernel/sched/fair.c:4184 [inline] enqueue_task_fair+0x727/0x22d0 kernel/sched/fair.c:5457 enqueue_task kernel/sched/core.c:1295 [inline] activate_task+0xfb/0x320 kernel/sched/core.c:1317 ttwu_do_activate+0xca/0x130 kernel/sched/core.c:2247 ttwu_queue kernel/sched/core.c:2392 [inline] try_to_wake_up+0xa86/0x1690 kernel/sched/core.c:2626 set_cpus_allowed_ptr+0x10/0x10 kernel/sched/core.c:1691 rwlock_bug.part.0+0x90/0x90 include/linux/sched.h:1329 swake_up_locked.part.0+0x58/0x180 kernel/sched/swait.c:30 complete+0x47/0x60 kernel/sched/completion.c:36 __usb_hcd_giveback_urb+0x1f2/0x470 drivers/usb/core/hcd.c:1648 usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1713 dummy_timer+0x125e/0x32b4 drivers/usb/gadget/udc/dummy_hcd.c:1966 dummy_udc_probe+0x980/0x980 include/linux/device.h:699 lock_is_held include/linux/lockdep.h:406 [inline] rcu_read_lock_sched_held+0x9c/0xd0 kernel/rcu/update.c:121 rcu_read_lock_bh_held+0xb0/0xb0 kernel/rcu/update.c:333 call_timer_fn+0x1ac/0x700 kernel/time/timer.c:1405 dummy_udc_probe+0x980/0x980 include/linux/device.h:699 timer_fixup_init+0x60/0x60 kernel/time/timer.c:632 lock_downgrade+0x720/0x720 kernel/locking/lockdep.c:4599 lock_is_held include/linux/lockdep.h:406 [inline] rcu_read_lock_sched_held+0x9c/0xd0 kernel/rcu/update.c:121 rcu_read_lock_bh_held+0xb0/0xb0 kernel/rcu/update.c:333 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] _raw_spin_unlock_irq+0x1f/0x30 kernel/locking/spinlock.c:199 dummy_udc_probe+0x980/0x980 include/linux/device.h:699 expire_timers kernel/time/timer.c:1450 [inline] __run_timers kernel/time/timer.c:1774 [inline] __run_timers kernel/time/timer.c:1741 [inline] run_timer_softirq+0x5f9/0x1500 kernel/time/timer.c:1787 add_timer+0x7a0/0x7a0 kernel/time/timer.c:893 lock_is_held include/linux/lockdep.h:406 [inline] rcu_read_lock_sched_held+0x9c/0xd0 kernel/rcu/update.c:121 rcu_read_lock_bh_held+0xb0/0xb0 kernel/rcu/update.c:333 __do_softirq+0x21e/0x9aa kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x178/0x1a0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:546 [inline] smp_apic_timer_interrupt+0x141/0x540 arch/x86/kernel/apic/apic.c:1140 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:_raw_spin_unlock_irq+0x27/0x30 kernel/locking/spinlock.c:200 Code: 44 00 00 55 48 8b 74 24 08 48 89 fd 48 8d 7f 18 e8 1e b4 90 fb 48 89 ef e8 b6 b0 91 fb e8 a1 54 af fb fb 65 ff 0d 51 ca 6b 7a <5d> c3 0f 1f 80 00 00 00 00 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 RSP: 0018:ffff8881cee57b38 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000007 RBX: ffff8881d0416300 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000006 RDI: ffff8881d0416b7c RBP: ffff8881db234900 R08: ffff8881d0416300 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881db234900 R13: ffff8881d8d6e300 R14: 0000000000000000 R15: 0000000000000001 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] _raw_spin_unlock_irq+0x1f/0x30 kernel/locking/spinlock.c:199 finish_lock_switch kernel/sched/core.c:3106 [inline] finish_task_switch+0x11d/0x5d0 kernel/sched/core.c:3206 __write_once_size include/linux/compiler.h:225 [inline] finish_task kernel/sched/core.c:3077 [inline] finish_task_switch+0xef/0x5d0 kernel/sched/core.c:3205 set_bit include/asm-generic/bitops/instrumented-atomic.h:28 [inline] set_ti_thread_flag include/linux/thread_info.h:55 [inline] switch_fpu_finish arch/x86/include/asm/fpu/internal.h:601 [inline] __switch_to+0x5bd/0xe90 arch/x86/kernel/process_64.c:491 context_switch kernel/sched/core.c:3370 [inline] __schedule+0x89a/0x1d80 kernel/sched/core.c:4083 __sched_text_start+0x8/0x8 enqueue_hrtimer+0x3e0/0x3e0 include/linux/compiler.h:199 __trace_hardirqs_on_caller kernel/locking/lockdep.c:3657 [inline] lockdep_hardirqs_on+0x3c7/0x5d0 kernel/locking/lockdep.c:3702 schedule+0xcd/0x2b0 kernel/sched/core.c:4158 freezable_schedule include/linux/freezer.h:172 [inline] do_nanosleep+0x21f/0x650 kernel/time/hrtimer.c:1879 schedule_timeout_idle+0x80/0x80 kernel/time/timer.c:1942 memset+0x20/0x40 mm/kasan/common.c:85 __hrtimer_init+0x13b/0x270 kernel/time/hrtimer.c:1407 hrtimer_nanosleep+0x1df/0x3a0 kernel/time/hrtimer.c:1932 nanosleep_copyout+0x100/0x100 kernel/time/hrtimer.c:1861 _copy_from_user+0x13c/0x1a0 lib/usercopy.c:18 hrtimer_init_sleeper_on_stack+0x90/0x90 kernel/time/hrtimer.c:1833 put_old_itimerspec32+0x1d0/0x1d0 kernel/time/time.c:908 __do_sys_nanosleep kernel/time/hrtimer.c:1966 [inline] __se_sys_nanosleep kernel/time/hrtimer.c:1953 [inline] __x64_sys_nanosleep+0x1dc/0x260 kernel/time/hrtimer.c:1953 hrtimer_nanosleep+0x3a0/0x3a0 kernel/time/hrtimer.c:1943 __ia32_sys_clock_settime+0x260/0x260 kernel/time/posix-timers.c:1410 trace_hardirqs_off_caller+0x55/0x200 kernel/trace/trace_preemptirq.c:73 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x45af30 Code: c0 5b 5d c3 66 0f 1f 44 00 00 8b 04 24 48 83 c4 18 5b 5d c3 66 0f 1f 44 00 00 83 3d 21 ef 84 00 00 75 14 b8 23 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 d4 d1 fb ff c3 48 83 ec 08 e8 8a 46 00 00 RSP: 002b:00007ffda5b57738 EFLAGS: 00000246 ORIG_RAX: 0000000000000023 RAX: ffffffffffffffda RBX: 000000000003ca2c RCX: 000000000045af30 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffda5b57740 RBP: 00000000000000ab R08: 0000000000000001 R09: 0000000001805940 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000007 R13: 00007ffda5b57790 R14: 000000000003ca0a R15: 00007ffda5b577a0