INFO: task syz-executor.0:9115 blocked for more than 143 seconds. Not tainted 6.5.0-rc6-syzkaller-gac9847efd629 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:9115 ppid:6026 flags:0x00000005 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5381 [inline] __schedule+0x1364/0x23b4 kernel/sched/core.c:6710 schedule+0xc4/0x170 kernel/sched/core.c:6786 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6845 __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:958 [inline] usbdev_release+0x80/0x6fc drivers/usb/core/devio.c:1096 __fput+0x324/0x824 fs/file_table.c:384 ____fput+0x20/0x30 fs/file_table.c:412 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:1305 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline] el0_svc+0xa0/0x16c arch/arm64/kernel/entry-common.c:679 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 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/13: #0: ffff80008e2718d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:522 1 lock held by rcu_tasks_trace/14: #0: ffff80008e271c90 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:522 1 lock held by khungtaskd/28: #0: ffff80008e271700 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:302 5 locks held by kworker/1:3/5570: #0: ffff0000c2461938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x6b4/0x1480 kernel/workqueue.c:2572 #1: ffff800097857c20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6f0/0x1480 kernel/workqueue.c:2574 #2: ffff0000d006f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline] #2: ffff0000d006f190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c4/0x4638 drivers/usb/core/hub.c:5754 #3: ffff00012a5cf520 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3162 [inline] #3: ffff00012a5cf520 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5318 [inline] #3: ffff00012a5cf520 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5566 [inline] #3: ffff00012a5cf520 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5726 [inline] #3: ffff00012a5cf520 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x1df4/0x4638 drivers/usb/core/hub.c:5808 #4: ffff0000cf53ab68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5319 [inline] #4: ffff0000cf53ab68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5566 [inline] #4: ffff0000cf53ab68 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5726 [inline] #4: ffff0000cf53ab68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x1e24/0x4638 drivers/usb/core/hub.c:5808 2 locks held by getty/5750: #0: ffff0000d9e12098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800093ffd2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2187 1 lock held by syz-executor.0/9115: #0: ffff0000d006f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline] #0: ffff0000d006f190 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x80/0x6fc drivers/usb/core/devio.c:1096 1 lock held by syz-executor.5/9472: #0: ffff0000d006f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline] #0: ffff0000d006f190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x6c0 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.4/9483: #0: ffff0000d006f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline] #0: ffff0000d006f190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x6c0 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.4/9484: #0: ffff0000d006f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline] #0: ffff0000d006f190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x6c0 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.5/9668: #0: ffff0000d006f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline] #0: ffff0000d006f190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x6c0 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.4/9676: #0: ffff0000d006f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline] #0: ffff0000d006f190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x6c0 drivers/usb/core/devio.c:1051 1 lock held by syz-executor.4/9677: #0: ffff0000d006f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline] #0: ffff0000d006f190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x6c0 drivers/usb/core/devio.c:1051 =============================================