INFO: task kworker/0:2:1777 blocked for more than 143 seconds. Not tainted 6.14.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:2 state:D stack:0 pid:1777 tgid:1777 ppid:2 task_flags:0x4208060 flags:0x00000008 Workqueue: usb_hub_wq hub_event Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5377 [inline] __schedule+0x1360/0x257c kernel/sched/core.c:6764 __schedule_loop kernel/sched/core.c:6841 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6856 usb_kill_urb+0x1b4/0x32c drivers/usb/core/urb.c:713 usb_start_wait_urb+0x16c/0x414 drivers/usb/core/message.c:65 usb_internal_control_msg drivers/usb/core/message.c:103 [inline] usb_control_msg+0x228/0x3f8 drivers/usb/core/message.c:154 get_bMaxPacketSize0 drivers/usb/core/hub.c:4807 [inline] hub_port_init+0xdcc/0x1fc0 drivers/usb/core/hub.c:5068 hub_port_connect drivers/usb/core/hub.c:5452 [inline] hub_port_connect_change drivers/usb/core/hub.c:5663 [inline] port_event drivers/usb/core/hub.c:5823 [inline] hub_event+0x2114/0x4280 drivers/usb/core/hub.c:5905 process_one_work+0x7a8/0x15cc kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3317 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3398 kthread+0x65c/0x7b0 kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffff80008fdb1ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336 5 locks held by kworker/0:2/1777: #0: ffff0000c2be1d48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x60c/0x15cc kernel/workqueue.c:3210 #1: ffff80009fbc7ba0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6a4/0x15cc kernel/workqueue.c:3210 #2: ffff0000cd9b9190 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1030 [inline] #2: ffff0000cd9b9190 (&dev->mutex){....}-{4:4}, at: hub_event+0x1bc/0x4280 drivers/usb/core/hub.c:5851 #3: ffff0000cd9bc520 (&port_dev->status_lock){+.+.}-{4:4}, at: usb_lock_port drivers/usb/core/hub.c:3209 [inline] #3: ffff0000cd9bc520 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5420 [inline] #3: ffff0000cd9bc520 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5663 [inline] #3: ffff0000cd9bc520 (&port_dev->status_lock){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5823 [inline] #3: ffff0000cd9bc520 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_event+0x1e58/0x4280 drivers/usb/core/hub.c:5905 #4: ffff0000cd014d68 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5421 [inline] #4: ffff0000cd014d68 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5663 [inline] #4: ffff0000cd014d68 (hcd->address0_mutex){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5823 [inline] #4: ffff0000cd014d68 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_event+0x1e7c/0x4280 drivers/usb/core/hub.c:5905 2 locks held by getty/6194: #0: ffff0000d26420a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009bc9e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 =============================================