INFO: task syz-executor.1:17255 blocked for more than 143 seconds. Not tainted 6.3.0-rc7-syzkaller-g14f8db1c0f9a #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:17255 ppid:6039 flags:0x00000001 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5307 [inline] __schedule+0x103c/0x1e2c kernel/sched/core.c:6625 schedule+0xc4/0x170 kernel/sched/core.c:6701 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6760 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 device_lock include/linux/device.h:832 [inline] usbdev_release+0x80/0x6fc drivers/usb/core/devio.c:1086 __fput+0x30c/0x7bc fs/file_table.c:321 ____fput+0x20/0x30 fs/file_table.c:349 task_work_run+0x230/0x2e0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2180/0x3c90 arch/arm64/kernel/signal.c:1304 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x90/0x15c arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffff800015e4f0d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510 1 lock held by rcu_tasks_trace/13: #0: ffff800015e4f8d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510 1 lock held by khungtaskd/28: #0: ffff800015e4ef00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:326 1 lock held by klogd/5508: 2 locks held by getty/5668: #0: ffff0000d8a93098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001aae02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2177 5 locks held by kworker/0:6/6103: #0: ffff0000c13f7938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x664/0x12d4 kernel/workqueue.c:2363 #1: ffff80001eca7c20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x12d4 kernel/workqueue.c:2365 #2: ffff0000ced6b190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #2: ffff0000ced6b190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c8/0x474c drivers/usb/core/hub.c:5739 #3: ffff0000ced6e510 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3147 [inline] #3: ffff0000ced6e510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5303 [inline] #3: ffff0000ced6e510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5551 [inline] #3: ffff0000ced6e510 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5711 [inline] #3: ffff0000ced6e510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x1da0/0x474c drivers/usb/core/hub.c:5793 #4: ffff0000ceadd468 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5304 [inline] #4: ffff0000ceadd468 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5551 [inline] #4: ffff0000ceadd468 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5711 [inline] #4: ffff0000ceadd468 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x1dcc/0x474c drivers/usb/core/hub.c:5793 1 lock held by syz-executor.1/17255: #0: ffff0000ced6b190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #0: ffff0000ced6b190 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x80/0x6fc drivers/usb/core/devio.c:1086 1 lock held by syz-executor.1/17416: #0: ffff0000ced6b190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #0: ffff0000ced6b190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x6c0 drivers/usb/core/devio.c:1041 1 lock held by syz-executor.1/17483: #0: ffff0000ced6b190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #0: ffff0000ced6b190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x6c0 drivers/usb/core/devio.c:1041 =============================================