INFO: task syz-executor.0:15107 blocked for more than 143 seconds. Not tainted 6.1.82-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:15107 ppid:11580 flags:0x00000005 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5245 [inline] __schedule+0xee4/0x1c98 kernel/sched/core.c:6558 schedule+0xc4/0x170 kernel/sched/core.c:6634 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6693 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 device_lock include/linux/device.h:837 [inline] usbdev_release+0x80/0x6fc drivers/usb/core/devio.c:1097 __fput+0x30c/0x7bc fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x240/0x2f0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2148/0x3474 arch/arm64/kernel/signal.c:1132 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+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffff800015a14e70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:516 1 lock held by rcu_tasks_trace/13: #0: ffff800015a15670 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:516 1 lock held by khungtaskd/28: #0: ffff800015a14ca0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:318 2 locks held by getty/3983: #0: ffff0000d633c098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001bcb02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2188 5 locks held by kworker/1:6/4960: #0: ffff0000c49ac538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2265 #1: ffff800023ba7c20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2267 #2: ffff0000d18e1190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline] #2: ffff0000d18e1190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1ac/0x4360 drivers/usb/core/hub.c:5780 #3: ffff0000d18e5510 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3144 [inline] #3: ffff0000d18e5510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5352 [inline] #3: ffff0000d18e5510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5596 [inline] #3: ffff0000d18e5510 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5752 [inline] #3: ffff0000d18e5510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x1b88/0x4360 drivers/usb/core/hub.c:5834 #4: ffff0000d13ab468 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5353 [inline] #4: ffff0000d13ab468 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5596 [inline] #4: ffff0000d13ab468 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5752 [inline] #4: ffff0000d13ab468 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x1bb0/0x4360 drivers/usb/core/hub.c:5834 1 lock held by syz-executor.0/15107: #0: ffff0000d18e1190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline] #0: ffff0000d18e1190 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x80/0x6fc drivers/usb/core/devio.c:1097 1 lock held by udevd/17319: 1 lock held by syz-executor.4/23231: #0: ffff0000d1df7948 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] #0: ffff0000d1df7948 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x15c/0x2b4 mm/util.c:518 1 lock held by syz-executor.4/23238: #0: ffff0000d1df7948 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] #0: ffff0000d1df7948 (&mm->mmap_lock){++++}-{3:3}, at: __do_sys_mlockall mm/mlock.c:712 [inline] #0: ffff0000d1df7948 (&mm->mmap_lock){++++}-{3:3}, at: __se_sys_mlockall mm/mlock.c:697 [inline] #0: ffff0000d1df7948 (&mm->mmap_lock){++++}-{3:3}, at: __arm64_sys_mlockall+0x11c/0x31c mm/mlock.c:697 2 locks held by syz-executor.4/23305: =============================================