INFO: task kworker/0:4:3113 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/0:4 D24688 3113 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
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:110 [inline]
hlock_class kernel/locking/lockdep.c:179 [inline]
mark_lock+0x12b/0x1510 kernel/locking/lockdep.c:3912
find_held_lock+0x2d/0x110 kernel/locking/lockdep.c:4458
usleep_range+0x160/0x160 kernel/time/timer.c:2093
print_usage_bug+0x200/0x200 kernel/locking/lockdep.c:101
flush_workqueue+0x3f7/0x14f0 kernel/workqueue.c:2829
lock_downgrade+0x720/0x720 kernel/locking/lockdep.c:4599
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
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
spin_lock_irq include/linux/spinlock.h:378 [inline]
usb_kill_anchored_urbs+0x22/0x1c0 drivers/usb/core/urb.c:788
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:110 [inline]
hlock_class kernel/locking/lockdep.c:179 [inline]
mark_lock+0x12b/0x1510 kernel/locking/lockdep.c:3912
pwq_unbound_release_workfn+0x2d0/0x2d0 include/linux/list.h:135
print_usage_bug+0x200/0x200 kernel/locking/lockdep.c:101
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
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
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/0:5:3123 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/0:5 D25464 3123 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:
3 locks held by kworker/0:1/12:
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x844/0x1630 kernel/workqueue.c:2239
#1: ffff8881da21fdc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x878/0x1630 kernel/workqueue.c:2243
#2: ffff8881d4ea8218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline]
#2: ffff8881d4ea8218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x43c0 drivers/usb/core/hub.c:5521
3 locks held by kworker/1:0/17:
#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: ffff8881da25fdc0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x878/0x1630 kernel/workqueue.c:2243
#2: ffff8881d4ef0218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline]
#2: ffff8881d4ef0218 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1077 [inline]
#2: ffff8881d4ef0218 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_cb+0x388/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1210
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
5 locks held by kworker/0:2/95:
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x844/0x1630 kernel/workqueue.c:2239
#1: ffff8881d5e57dc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x878/0x1630 kernel/workqueue.c:2243
#2: ffff8881d4f00218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline]
#2: ffff8881d4f00218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x43c0 drivers/usb/core/hub.c:5521
#3: ffff8881d4f03588 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3011 [inline]
#3: ffff8881d4f03588 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5138 [inline]
#3: ffff8881d4f03588 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5347 [inline]
#3: ffff8881d4f03588 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5493 [inline]
#3: ffff8881d4f03588 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2050/0x43c0 drivers/usb/core/hub.c:5575
#4: ffff8881d4e0dd68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b6/0x2e20 drivers/usb/core/hub.c:4562
1 lock held by in:imklog/267:
#0: ffff8881ca91cd70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:826
5 locks held by kworker/1:3/3111:
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x844/0x1630 kernel/workqueue.c:2239
#1: ffff8881d54d7dc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x878/0x1630 kernel/workqueue.c:2243
#2: ffff8881d4ef0218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline]
#2: ffff8881d4ef0218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x43c0 drivers/usb/core/hub.c:5521
#3: ffff8881d4ef3588 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3011 [inline]
#3: ffff8881d4ef3588 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5138 [inline]
#3: ffff8881d4ef3588 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5347 [inline]
#3: ffff8881d4ef3588 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5493 [inline]
#3: ffff8881d4ef3588 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2050/0x43c0 drivers/usb/core/hub.c:5575
#4: ffff8881d4e01d68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b6/0x2e20 drivers/usb/core/hub.c:4562
5 locks held by kworker/0:4/3113:
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x844/0x1630 kernel/workqueue.c:2239
#1: ffff8881d2407dc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x878/0x1630 kernel/workqueue.c:2243
#2: ffff8881d4f28218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline]
#2: ffff8881d4f28218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x43c0 drivers/usb/core/hub.c:5521
#3: ffff8881c73af218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline]
#3: ffff8881c73af218 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7b/0x390 drivers/base/dd.c:847
#4: ffff8881ad0521a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline]
#4: ffff8881ad0521a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7b/0x390 drivers/base/dd.c:847
3 locks held by kworker/1:4/3118:
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x844/0x1630 kernel/workqueue.c:2239
#1: ffff8881aca67dc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x878/0x1630 kernel/workqueue.c:2243
#2: ffff8881d4e68218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline]
#2: ffff8881d4e68218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x43c0 drivers/usb/core/hub.c:5521
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: ffff8881acba7dc0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x878/0x1630 kernel/workqueue.c:2243
#2: ffff8881d4f28218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline]
#2: ffff8881d4f28218 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1077 [inline]
#2: ffff8881d4f28218 (&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/1:7/3169:
#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: ffff8881cf607dc0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x878/0x1630 kernel/workqueue.c:2243
#2: ffff8881d4ed0218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline]
#2: ffff8881d4ed0218 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1077 [inline]
#2: ffff8881d4ed0218 (&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/1:8/3214:
#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: ffff8881cee7fdc0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x878/0x1630 kernel/workqueue.c:2243
#2: ffff8881d4e68218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline]
#2: ffff8881d4e68218 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1077 [inline]
#2: ffff8881d4e68218 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_cb+0x388/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1210
6 locks held by kworker/0:7/3850:
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline]
#0: ffff8881d8d72138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x844/0x1630 kernel/workqueue.c:2239
#1: ffff8881a968fdc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x878/0x1630 kernel/workqueue.c:2243
#2: ffff8881d4ed0218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:768 [inline]
#2: ffff8881d4ed0218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x43c0 drivers/usb/core/hub.c:5521
#3: ffff8881d4ed3588 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3011 [inline]
#3: ffff8881d4ed3588 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5138 [inline]
#3: ffff8881d4ed3588 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5347 [inline]
#3: ffff8881d4ed3588 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5493 [inline]
#3: ffff8881d4ed3588 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2050/0x43c0 drivers/usb/core/hub.c:5575
#4: ffff8881d4df7d68 (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
=============================================
NMI backtrace for cpu 0
CPU: 0 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3111 Comm: kworker/1:3 Not tainted 5.7.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:153 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x9/0x50 kernel/kcov.c:187
Code: cc 65 48 8b 04 25 40 0f 02 00 48 8b 80 20 13 00 00 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 65 48 8b 04 25 40 0f 02 00 <65> 8b 15 88 d1 c1 7e 81 e2 00 01 1f 00 48 8b 34 24 75 2b 8b 90 08
RSP: 0018:ffff8881db309b10 EFLAGS: 00000246
RAX: ffff8881c57c8000 RBX: ffffffff851022c0 RCX: ffffffff851022d8
RDX: 0000000000000002 RSI: ffffffff851022ea RDI: ffff8881ce54878a
RBP: 0000000000000000 R08: ffff8881c57c8000 R09: ffffed1039ca900d
R10: ffff8881ce548067 R11: ffffed1039ca900c R12: 0000000000000000
R13: ffffffff87e91420 R14: 0000000000000000 R15: ffff8881ce548000
FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564d097b5790 CR3: 00000001adea1000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tcp_set_ca_state include/net/tcp.h:1141 [inline]
tcp_enter_loss+0xa34/0x1100 net/ipv4/tcp_input.c:2020
tcp_retransmit_timer+0xeb5/0x3010 net/ipv4/tcp_timer.c:525
tcp_delack_timer+0x360/0x360 include/net/sock.h:1621
mark_held_locks+0x9f/0xe0 kernel/locking/lockdep.c:3628
seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline]
read_seqcount_begin include/linux/seqlock.h:164 [inline]
ktime_get kernel/time/timekeeping.c:757 [inline]
ktime_get+0x18b/0x1c0 kernel/time/timekeeping.c:747
__trace_hardirqs_on_caller kernel/locking/lockdep.c:3649 [inline]
lockdep_hardirqs_on+0x256/0x5d0 kernel/locking/lockdep.c:3702
ktime_get kernel/time/timekeeping.c:763 [inline]
ktime_get+0x15d/0x1c0 kernel/time/timekeeping.c:747
tcp_write_timer_handler+0x686/0x8a0 net/ipv4/tcp_timer.c:611
tcp_write_timer+0xa2/0x2b0 net/ipv4/tcp_timer.c:631
call_timer_fn+0x1ac/0x700 kernel/time/timer.c:1405
tcp_write_timer_handler+0x8a0/0x8a0 net/ipv4/tcp_timer.c:372
timer_fixup_init+0x60/0x60 kernel/time/timer.c:632
lock_downgrade+0x720/0x720 kernel/locking/lockdep.c:4599
mark_held_locks+0x9f/0xe0 kernel/locking/lockdep.c:3628
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
tcp_write_timer_handler+0x8a0/0x8a0 net/ipv4/tcp_timer.c:372
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
mark_held_locks+0x9f/0xe0 kernel/locking/lockdep.c:3628
__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:arch_local_irq_restore arch/x86/include/asm/irqflags.h:85 [inline]
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1779 [inline]
RIP: 0010:vprintk_emit+0x3d0/0x3e0 kernel/printk/printk.c:2020
Code: 00 83 fb ff 75 d6 e9 d8 fc ff ff e8 7a 2f 16 00 e8 55 8b 1b 00 41 56 9d e9 aa fd ff ff e8 68 2f 16 00 e8 43 8b 1b 00 41 56 9d 2a ff ff ff 90 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 f5 53 48
RSP: 0018:ffff8881d54d7660 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000000200 RCX: 1ffffffff1270018
RDX: 0000000000000000 RSI: ffff8881c57c88d0 RDI: ffff8881c57c887c
RBP: ffff8881d54d76a8 R08: 0000000000000001 R09: fffffbfff126c8c6
R10: ffffffff8936462f R11: fffffbfff126c8c5 R12: 0000000000000041
R13: ffff8881d8c98000 R14: 0000000000000212 R15: 0000000000000000
dev_vprintk_emit+0x4fc/0x541 drivers/base/core.c:3774
dev_attr_show.cold+0x3a/0x3a drivers/base/core.c:1244
stack_trace_consume_entry+0x160/0x160 kernel/stacktrace.c:93
save_stack+0x32/0x40 mm/kasan/common.c:51
save_stack+0x1b/0x40 mm/kasan/common.c:49
set_track mm/kasan/common.c:57 [inline]
kasan_set_free_info mm/kasan/common.c:317 [inline]
__kasan_slab_free+0x117/0x160 mm/kasan/common.c:456
slab_free_hook mm/slub.c:1455 [inline]
slab_free_freelist_hook mm/slub.c:1488 [inline]
slab_free mm/slub.c:3045 [inline]
kfree+0xd5/0x300 mm/slub.c:4026
usb_cache_string+0xcd/0x110 drivers/usb/core/message.c:893
usb_enumerate_device drivers/usb/core/hub.c:2399 [inline]
usb_new_device+0x230/0x740 drivers/usb/core/hub.c:2522
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
process_one_work+0x965/0x1630 kernel/workqueue.c:2268
worker_thread+0x96/0xe20 kernel/workqueue.c:2414
dev_printk_emit+0xba/0xf1 drivers/base/core.c:3785
dev_vprintk_emit+0x541/0x541 drivers/base/core.c:3775
print_usage_bug+0x200/0x200 kernel/locking/lockdep.c:101
__dev_printk+0x1db/0x203 drivers/base/core.c:3797
_dev_info+0xd7/0x109 drivers/base/core.c:3843
_dev_notice+0x109/0x109 drivers/base/core.c:3842
__trace_hardirqs_on_caller kernel/locking/lockdep.c:3657 [inline]
lockdep_hardirqs_on+0x3c7/0x5d0 kernel/locking/lockdep.c:3702
usb_match_device+0xd4/0x540 drivers/usb/core/driver.c:624
usb_detect_static_quirks+0x2da/0x360 drivers/usb/core/quirks.c:582
__kasan_slab_free+0x12e/0x160 mm/kasan/common.c:458
announce_device drivers/usb/core/hub.c:2279 [inline]
usb_new_device.cold+0x1f8/0xf6e drivers/usb/core/hub.c:2533
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
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