INFO: task kworker/0:1:14 blocked for more than 144 seconds. Not tainted 6.2.0-syzkaller-18295-ga9b06ec42c0f #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:1 state:D stack:0 pid:14 ppid:2 flags:0x00000008 Workqueue: usb_hub_wq hub_event Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5296 [inline] __schedule+0xfc8/0x1d64 kernel/sched/core.c:6609 schedule+0xc4/0x170 kernel/sched/core.c:6685 usb_kill_urb+0x1b4/0x32c drivers/usb/core/urb.c:728 usb_start_wait_urb+0x16c/0x414 drivers/usb/core/message.c:64 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0x228/0x3f8 drivers/usb/core/message.c:153 hub_port_init+0x91c/0x1f70 drivers/usb/core/hub.c:4875 hub_port_connect drivers/usb/core/hub.c:5337 [inline] hub_port_connect_change drivers/usb/core/hub.c:5552 [inline] port_event drivers/usb/core/hub.c:5712 [inline] hub_event+0x22b4/0x474c drivers/usb/core/hub.c:5794 process_one_work+0x848/0x16b4 kernel/workqueue.c:2289 worker_thread+0x8e4/0xfec kernel/workqueue.c:2436 kthread+0x24c/0x2d4 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffff800015e06ff0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcb4 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/13: #0: ffff800015e077f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcb4 kernel/rcu/tasks.h:507 5 locks held by kworker/0:1/14: #0: ffff0000c13f3d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x664/0x16b4 kernel/workqueue.c:2262 #1: ffff80001a307c20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x16b4 kernel/workqueue.c:2264 #2: ffff0000ce853190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #2: ffff0000ce853190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c8/0x474c drivers/usb/core/hub.c:5740 #3: ffff0000ce856510 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3148 [inline] #3: ffff0000ce856510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5304 [inline] #3: ffff0000ce856510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5552 [inline] #3: ffff0000ce856510 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5712 [inline] #3: ffff0000ce856510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x1da0/0x474c drivers/usb/core/hub.c:5794 #4: ffff0000ce6bf868 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5305 [inline] #4: ffff0000ce6bf868 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5552 [inline] #4: ffff0000ce6bf868 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5712 [inline] #4: ffff0000ce6bf868 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x1dcc/0x474c drivers/usb/core/hub.c:5794 1 lock held by khungtaskd/28: #0: ffff800015e06e20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:324 2 locks held by kworker/u4:2/39: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x664/0x16b4 kernel/workqueue.c:2262 #1: ffff80001a7d7c20 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x16b4 kernel/workqueue.c:2264 1 lock held by udevd/5452: 2 locks held by getty/5603: #0: ffff0000d3046098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001a9002f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2177 2 locks held by kworker/u4:16/9632: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x664/0x16b4 kernel/workqueue.c:2262 #1: ffff800023ac7c20 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x16b4 kernel/workqueue.c:2264 2 locks held by kworker/u4:20/6903: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x664/0x16b4 kernel/workqueue.c:2262 #1: ffff80001fb97c20 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x6a8/0x16b4 kernel/workqueue.c:2264 2 locks held by kworker/u4:24/7023: 1 lock held by dhcpcd/7143: #0: ffff0000cfe48130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline] #0: ffff0000cfe48130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x44/0xaa0 net/packet/af_packet.c:3194 1 lock held by dhcpcd/7150: #0: ffff0000ce12e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline] #0: ffff0000ce12e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x44/0xaa0 net/packet/af_packet.c:3194 1 lock held by udevadm/7161: =============================================