INFO: task kworker/1:1:27 blocked for more than 143 seconds. Not tainted 6.12.0-rc6-syzkaller-00200-g563047e691f2 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:0 pid:27 tgid:27 ppid:2 flags:0x00000008 Workqueue: usb_hub_wq hub_event Call trace: __switch_to+0x418/0x7a4 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5328 [inline] __schedule+0x16e0/0x27d0 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6782 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:4805 [inline] hub_port_init+0x93c/0x1fc0 drivers/usb/core/hub.c:5001 hub_port_connect drivers/usb/core/hub.c:5450 [inline] hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] port_event drivers/usb/core/hub.c:5821 [inline] hub_event+0x2114/0x4280 drivers/usb/core/hub.c:5903 process_one_work+0x7bc/0x1600 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3391 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 Showing all locks held in the system: 5 locks held by kworker/1:1/27: #0: ffff0000c2776548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff8000979e7c20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff0000cd8d4190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] #2: ffff0000cd8d4190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bc/0x4280 drivers/usb/core/hub.c:5849 #3: ffff0000cda08520 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3206 [inline] #3: ffff0000cda08520 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5418 [inline] #3: ffff0000cda08520 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] #3: ffff0000cda08520 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5821 [inline] #3: ffff0000cda08520 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x1e58/0x4280 drivers/usb/core/hub.c:5903 #4: ffff0000cc136868 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5419 [inline] #4: ffff0000cc136868 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] #4: ffff0000cc136868 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5821 [inline] #4: ffff0000cc136868 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x1e7c/0x4280 drivers/usb/core/hub.c:5903 1 lock held by khungtaskd/31: #0: ffff80008f9efda0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336 2 locks held by getty/6185: #0: ffff0000d2dbf0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b84b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 =============================================