INFO: task kworker/1:0:20 blocked for more than 143 seconds. Not tainted 5.15.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0 state:D stack:25120 pid: 20 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 hwrng_register+0x6b/0x500 drivers/char/hw_random/core.c:472 chaoskey_probe+0x7a6/0xb40 drivers/usb/misc/chaoskey.c:205 usb_probe_interface+0x274/0x6a0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x1c2/0xb60 drivers/base/dd.c:596 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:751 driver_probe_device+0x44/0x110 drivers/base/dd.c:781 __device_attach_driver+0x185/0x250 drivers/base/dd.c:898 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:969 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0xa5c/0x1e10 drivers/base/core.c:3359 usb_set_configuration+0xc1d/0x1710 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x74/0xa0 drivers/usb/core/generic.c:238 usb_probe_device+0x95/0x240 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x1c2/0xb60 drivers/base/dd.c:596 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:751 driver_probe_device+0x44/0x110 drivers/base/dd.c:781 __device_attach_driver+0x185/0x250 drivers/base/dd.c:898 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:969 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0xa5c/0x1e10 drivers/base/core.c:3359 usb_new_device.cold+0x5cf/0xedf drivers/usb/core/hub.c:2563 hub_port_connect drivers/usb/core/hub.c:5348 [inline] hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] port_event drivers/usb/core/hub.c:5634 [inline] hub_event+0x10a3/0x36c0 drivers/usb/core/hub.c:5716 process_one_work+0x87f/0x1450 kernel/workqueue.c:2297 worker_thread+0x598/0x1040 kernel/workqueue.c:2444 kthread+0x38b/0x460 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/1:1:25 blocked for more than 143 seconds. Not tainted 5.15.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:25632 pid: 25 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 hwrng_register+0x6b/0x500 drivers/char/hw_random/core.c:472 chaoskey_probe+0x7a6/0xb40 drivers/usb/misc/chaoskey.c:205 usb_probe_interface+0x274/0x6a0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x1c2/0xb60 drivers/base/dd.c:596 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:751 driver_probe_device+0x44/0x110 drivers/base/dd.c:781 __device_attach_driver+0x185/0x250 drivers/base/dd.c:898 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:969 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0xa5c/0x1e10 drivers/base/core.c:3359 usb_set_configuration+0xc1d/0x1710 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x74/0xa0 drivers/usb/core/generic.c:238 usb_probe_device+0x95/0x240 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x1c2/0xb60 drivers/base/dd.c:596 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:751 driver_probe_device+0x44/0x110 drivers/base/dd.c:781 __device_attach_driver+0x185/0x250 drivers/base/dd.c:898 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:969 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0xa5c/0x1e10 drivers/base/core.c:3359 usb_new_device.cold+0x5cf/0xedf drivers/usb/core/hub.c:2563 hub_port_connect drivers/usb/core/hub.c:5348 [inline] hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] port_event drivers/usb/core/hub.c:5634 [inline] hub_event+0x10a3/0x36c0 drivers/usb/core/hub.c:5716 process_one_work+0x87f/0x1450 kernel/workqueue.c:2297 worker_thread+0x598/0x1040 kernel/workqueue.c:2444 kthread+0x38b/0x460 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/0:2:1054 blocked for more than 144 seconds. Not tainted 5.15.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:2 state:D stack:25392 pid: 1054 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 hwrng_register+0x6b/0x500 drivers/char/hw_random/core.c:472 chaoskey_probe+0x7a6/0xb40 drivers/usb/misc/chaoskey.c:205 usb_probe_interface+0x274/0x6a0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x1c2/0xb60 drivers/base/dd.c:596 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:751 driver_probe_device+0x44/0x110 drivers/base/dd.c:781 __device_attach_driver+0x185/0x250 drivers/base/dd.c:898 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:969 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0xa5c/0x1e10 drivers/base/core.c:3359 usb_set_configuration+0xc1d/0x1710 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x74/0xa0 drivers/usb/core/generic.c:238 usb_probe_device+0x95/0x240 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x1c2/0xb60 drivers/base/dd.c:596 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:751 driver_probe_device+0x44/0x110 drivers/base/dd.c:781 __device_attach_driver+0x185/0x250 drivers/base/dd.c:898 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:969 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0xa5c/0x1e10 drivers/base/core.c:3359 usb_new_device.cold+0x5cf/0xedf drivers/usb/core/hub.c:2563 hub_port_connect drivers/usb/core/hub.c:5348 [inline] hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] port_event drivers/usb/core/hub.c:5634 [inline] hub_event+0x10a3/0x36c0 drivers/usb/core/hub.c:5716 process_one_work+0x87f/0x1450 kernel/workqueue.c:2297 worker_thread+0x598/0x1040 kernel/workqueue.c:2444 kthread+0x38b/0x460 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/1:4:6851 blocked for more than 144 seconds. Not tainted 5.15.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:4 state:D stack:25608 pid: 6851 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1857 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+0x176/0x280 kernel/sched/completion.c:138 cleanup_rng drivers/char/hw_random/core.c:81 [inline] kref_put include/linux/kref.h:65 [inline] drop_current_rng+0x79/0xa0 drivers/char/hw_random/core.c:109 set_current_rng+0x1fb/0x310 drivers/char/hw_random/core.c:96 hwrng_register+0x328/0x500 drivers/char/hw_random/core.c:499 chaoskey_probe+0x7a6/0xb40 drivers/usb/misc/chaoskey.c:205 usb_probe_interface+0x274/0x6a0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x1c2/0xb60 drivers/base/dd.c:596 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:751 driver_probe_device+0x44/0x110 drivers/base/dd.c:781 __device_attach_driver+0x185/0x250 drivers/base/dd.c:898 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:969 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0xa5c/0x1e10 drivers/base/core.c:3359 usb_set_configuration+0xc1d/0x1710 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x74/0xa0 drivers/usb/core/generic.c:238 usb_probe_device+0x95/0x240 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x1c2/0xb60 drivers/base/dd.c:596 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:751 driver_probe_device+0x44/0x110 drivers/base/dd.c:781 __device_attach_driver+0x185/0x250 drivers/base/dd.c:898 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:969 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0xa5c/0x1e10 drivers/base/core.c:3359 usb_new_device.cold+0x5cf/0xedf drivers/usb/core/hub.c:2563 hub_port_connect drivers/usb/core/hub.c:5348 [inline] hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] port_event drivers/usb/core/hub.c:5634 [inline] hub_event+0x10a3/0x36c0 drivers/usb/core/hub.c:5716 process_one_work+0x87f/0x1450 kernel/workqueue.c:2297 worker_thread+0x598/0x1040 kernel/workqueue.c:2444 kthread+0x38b/0x460 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/0:5:8945 blocked for more than 145 seconds. Not tainted 5.15.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:5 state:D stack:25632 pid: 8945 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 hwrng_register+0x6b/0x500 drivers/char/hw_random/core.c:472 chaoskey_probe+0x7a6/0xb40 drivers/usb/misc/chaoskey.c:205 usb_probe_interface+0x274/0x6a0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x1c2/0xb60 drivers/base/dd.c:596 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:751 driver_probe_device+0x44/0x110 drivers/base/dd.c:781 __device_attach_driver+0x185/0x250 drivers/base/dd.c:898 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:969 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0xa5c/0x1e10 drivers/base/core.c:3359 usb_set_configuration+0xc1d/0x1710 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x74/0xa0 drivers/usb/core/generic.c:238 usb_probe_device+0x95/0x240 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x1c2/0xb60 drivers/base/dd.c:596 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:751 driver_probe_device+0x44/0x110 drivers/base/dd.c:781 __device_attach_driver+0x185/0x250 drivers/base/dd.c:898 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:969 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0xa5c/0x1e10 drivers/base/core.c:3359 usb_new_device.cold+0x5cf/0xedf drivers/usb/core/hub.c:2563 hub_port_connect drivers/usb/core/hub.c:5348 [inline] hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] port_event drivers/usb/core/hub.c:5634 [inline] hub_event+0x10a3/0x36c0 drivers/usb/core/hub.c:5716 process_one_work+0x87f/0x1450 kernel/workqueue.c:2297 worker_thread+0x598/0x1040 kernel/workqueue.c:2444 kthread+0x38b/0x460 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/1:6:9001 blocked for more than 146 seconds. Not tainted 5.15.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:6 state:D stack:25632 pid: 9001 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x90d/0x26c0 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 hwrng_register+0x6b/0x500 drivers/char/hw_random/core.c:472 chaoskey_probe+0x7a6/0xb40 drivers/usb/misc/chaoskey.c:205 usb_probe_interface+0x274/0x6a0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x1c2/0xb60 drivers/base/dd.c:596 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:751 driver_probe_device+0x44/0x110 drivers/base/dd.c:781 __device_attach_driver+0x185/0x250 drivers/base/dd.c:898 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:969 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0xa5c/0x1e10 drivers/base/core.c:3359 usb_set_configuration+0xc1d/0x1710 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x74/0xa0 drivers/usb/core/generic.c:238 usb_probe_device+0x95/0x240 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x1c2/0xb60 drivers/base/dd.c:596 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:751 driver_probe_device+0x44/0x110 drivers/base/dd.c:781 __device_attach_driver+0x185/0x250 drivers/base/dd.c:898 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:969 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0xa5c/0x1e10 drivers/base/core.c:3359 usb_new_device.cold+0x5cf/0xedf drivers/usb/core/hub.c:2563 hub_port_connect drivers/usb/core/hub.c:5348 [inline] hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] port_event drivers/usb/core/hub.c:5634 [inline] hub_event+0x10a3/0x36c0 drivers/usb/core/hub.c:5716 process_one_work+0x87f/0x1450 kernel/workqueue.c:2297 worker_thread+0x598/0x1040 kernel/workqueue.c:2444 kthread+0x38b/0x460 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Showing all locks held in the system: 6 locks held by kworker/1:0/20: #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7a4/0x1450 kernel/workqueue.c:2268 #1: ffffc90000fbfdb8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d1/0x1450 kernel/workqueue.c:2272 #2: ffff88801ec94220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #2: ffff88801ec94220 (&dev->mutex){....}-{3:3}, at: hub_event+0x127/0x36c0 drivers/usb/core/hub.c:5662 #3: ffff88805bdbe220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #3: ffff88805bdbe220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x74/0x410 drivers/base/dd.c:944 #4: ffff8880217631a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #4: ffff8880217631a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x74/0x410 drivers/base/dd.c:944 #5: ffffffff8b585048 (rng_mutex){+.+.}-{3:3}, at: hwrng_register+0x6b/0x500 drivers/char/hw_random/core.c:472 6 locks held by kworker/1:1/25: #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7a4/0x1450 kernel/workqueue.c:2268 #1: ffffc90001017db8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d1/0x1450 kernel/workqueue.c:2272 #2: ffff88801e2da220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #2: ffff88801e2da220 (&dev->mutex){....}-{3:3}, at: hub_event+0x127/0x36c0 drivers/usb/core/hub.c:5662 #3: ffff88805bc4e220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #3: ffff88805bc4e220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x74/0x410 drivers/base/dd.c:944 #4: ffff88805b7bb1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #4: ffff88805b7bb1a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x74/0x410 drivers/base/dd.c:944 #5: ffffffff8b585048 (rng_mutex){+.+.}-{3:3}, at: hwrng_register+0x6b/0x500 drivers/char/hw_random/core.c:472 1 lock held by khungtaskd/27: #0: ffffffff8ab74000 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446 6 locks held by kworker/0:2/1054: #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7a4/0x1450 kernel/workqueue.c:2268 #1: ffffc9000476fdb8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d1/0x1450 kernel/workqueue.c:2272 #2: ffff88801ec21220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #2: ffff88801ec21220 (&dev->mutex){....}-{3:3}, at: hub_event+0x127/0x36c0 drivers/usb/core/hub.c:5662 #3: ffff88805c588220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #3: ffff88805c588220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x74/0x410 drivers/base/dd.c:944 #4: ffff88805be841a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #4: ffff88805be841a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x74/0x410 drivers/base/dd.c:944 #5: ffffffff8b585048 (rng_mutex){+.+.}-{3:3}, at: hwrng_register+0x6b/0x500 drivers/char/hw_random/core.c:472 1 lock held by in:imklog/6226: #0: ffff888077a310f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x9c/0xb0 fs/file.c:990 6 locks held by kworker/1:4/6851: #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7a4/0x1450 kernel/workqueue.c:2268 #1: ffffc900035c7db8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d1/0x1450 kernel/workqueue.c:2272 #2: ffff88823bc4c220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #2: ffff88823bc4c220 (&dev->mutex){....}-{3:3}, at: hub_event+0x127/0x36c0 drivers/usb/core/hub.c:5662 #3: ffff88805c7c0220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #3: ffff88805c7c0220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x74/0x410 drivers/base/dd.c:944 #4: ffff8880205231a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #4: ffff8880205231a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x74/0x410 drivers/base/dd.c:944 #5: ffffffff8b585048 (rng_mutex){+.+.}-{3:3}, at: hwrng_register+0x6b/0x500 drivers/char/hw_random/core.c:472 6 locks held by kworker/0:5/8945: #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7a4/0x1450 kernel/workqueue.c:2268 #1: ffffc9000cfb7db8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d1/0x1450 kernel/workqueue.c:2272 #2: ffff888146cac220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #2: ffff888146cac220 (&dev->mutex){....}-{3:3}, at: hub_event+0x127/0x36c0 drivers/usb/core/hub.c:5662 #3: ffff88805bc8e220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #3: ffff88805bc8e220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x74/0x410 drivers/base/dd.c:944 #4: ffff88805b6671a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #4: ffff88805b6671a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x74/0x410 drivers/base/dd.c:944 #5: ffffffff8b585048 (rng_mutex){+.+.}-{3:3}, at: hwrng_register+0x6b/0x500 drivers/char/hw_random/core.c:472 6 locks held by kworker/1:6/9001: #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff888141deb938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7a4/0x1450 kernel/workqueue.c:2268 #1: ffffc9000d0e7db8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d1/0x1450 kernel/workqueue.c:2272 #2: ffff888146ac3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #2: ffff888146ac3220 (&dev->mutex){....}-{3:3}, at: hub_event+0x127/0x36c0 drivers/usb/core/hub.c:5662 #3: ffff88806590a220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #3: ffff88806590a220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x74/0x410 drivers/base/dd.c:944 #4: ffff888024c901a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #4: ffff888024c901a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x74/0x410 drivers/base/dd.c:944 #5: ffffffff8b585048 (rng_mutex){+.+.}-{3:3}, at: hwrng_register+0x6b/0x500 drivers/char/hw_random/core.c:472 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x57/0x7d lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x30/0xc0 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x11a/0x160 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0x88c/0xbf0 kernel/hung_task.c:295 kthread+0x38b/0x460 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 986 Comm: kworker/u4:3 Not tainted 5.15.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy11 ieee80211_iface_work RIP: 0010:rcu_is_watching+0x0/0xc0 kernel/rcu/tree.c:1117 Code: be fd ff ff e8 31 77 4e 00 e9 e6 fd ff ff 4c 89 ff e8 24 77 4e 00 e9 1a ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <55> 53 65 ff 05 57 0c aa 7e e8 12 b3 11 07 48 c7 c3 48 2a 03 00 83 RSP: 0018:ffffc90004607530 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff888073beb450 RCX: 000000000000000c RDX: 1ffff1100eb111ea RSI: 0000000000000000 RDI: ffff888075888f50 RBP: ffffc90004607978 R08: ffff888075888ed0 R09: ffff888075888000 R10: ffff888065ca32e0 R11: 0000000000000000 R12: ffff888071108c80 R13: ffff888024c35a28 R14: ffff888065ca0d60 R15: 0000000000000f00 FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2c8fd6b000 CR3: 000000001e102000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_unlock include/linux/rcupdate.h:716 [inline] ieee80211_update_sta_info net/mac80211/ibss.c:1097 [inline] ieee80211_rx_bss_info net/mac80211/ibss.c:1117 [inline] ieee80211_rx_mgmt_probe_beacon+0x771/0x1640 net/mac80211/ibss.c:1608 ieee80211_ibss_rx_queued_mgmt+0xaec/0x12e0 net/mac80211/ibss.c:1635 ieee80211_iface_process_skb net/mac80211/iface.c:1439 [inline] ieee80211_iface_work+0x729/0x970 net/mac80211/iface.c:1493 process_one_work+0x87f/0x1450 kernel/workqueue.c:2297 worker_thread+0x598/0x1040 kernel/workqueue.c:2444 kthread+0x38b/0x460 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess), 4 bytes skipped: 0: e8 31 77 4e 00 callq 0x4e7736 5: e9 e6 fd ff ff jmpq 0xfffffdf0 a: 4c 89 ff mov %r15,%rdi d: e8 24 77 4e 00 callq 0x4e7736 12: e9 1a ff ff ff jmpq 0xffffff31 17: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1) 1e: 00 00 00 00 22: 0f 1f 40 00 nopl 0x0(%rax) * 26: 55 push %rbp <-- trapping instruction 27: 53 push %rbx 28: 65 ff 05 57 0c aa 7e incl %gs:0x7eaa0c57(%rip) # 0x7eaa0c86 2f: e8 12 b3 11 07 callq 0x711b346 34: 48 c7 c3 48 2a 03 00 mov $0x32a48,%rbx 3b: 83 .byte 0x83