INFO: task kworker/0:0:8868 blocked for more than 430 seconds.
      Not tainted 5.12.0-rc2-syzkaller-00059-g144c79ef3353 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:0     state:D stack:    0 pid: 8868 ppid:     2 flags:0x00000008
Workqueue: usb_hub_wq hub_event
Call trace:
 __switch_to+0x1f8/0x32c arch/arm64/kernel/process.c:564
 context_switch kernel/sched/core.c:4324 [inline]
 __schedule+0x810/0x1ac0 kernel/sched/core.c:5075
 schedule+0xac/0x230 kernel/sched/core.c:5154
 usb_kill_urb.part.0+0x1b4/0x220 drivers/usb/core/urb.c:711
 usb_kill_urb+0x78/0xa0 drivers/usb/core/urb.c:706
 usb_start_wait_urb+0x1d4/0x390 drivers/usb/core/message.c:64
 usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
 usb_control_msg+0x2ac/0x3d0 drivers/usb/core/message.c:153
 usb_get_descriptor+0xbc/0x150 drivers/usb/core/message.c:790
 usb_get_device_descriptor+0x74/0xd0 drivers/usb/core/message.c:1065
 hub_port_init+0x7a4/0x2350 drivers/usb/core/hub.c:4799
 hub_port_connect drivers/usb/core/hub.c:5155 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
 port_event drivers/usb/core/hub.c:5509 [inline]
 hub_event+0x15a0/0x358c drivers/usb/core/hub.c:5591
 process_one_work+0x798/0x1764 kernel/workqueue.c:2275
 worker_thread+0x3d4/0xcd0 kernel/workqueue.c:2421
 kthread+0x320/0x3bc kernel/kthread.c:292
 ret_from_fork+0x10/0x3c arch/arm64/kernel/entry.S:958

Showing all locks held in the system:
1 lock held by khungtaskd/1488:
 #0: ffff80001949e1a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x74/0x25c kernel/locking/lockdep.c:6329
2 locks held by getty/4411:
 #0: ffff00001886b098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340
 #1: ffff80001e16a2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x85c/0xc5c drivers/tty/n_tty.c:2178
3 locks held by syz-executor.0/4546:
2 locks held by kworker/u4:9/5791:
5 locks held by kworker/0:0/8868:
 #0: ffff000010362138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x6a4/0x1764 kernel/workqueue.c:2250
 #1: ffff00000f49fcd0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6a4/0x1764 kernel/workqueue.c:2250
 #2: ffff00000d3a7218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:740 [inline]
 #2: ffff00000d3a7218 (&dev->mutex){....}-{3:3}, at: hub_event+0x110/0x358c drivers/usb/core/hub.c:5537
 #3: ffff0000101ab588 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3030 [inline]
 #3: ffff0000101ab588 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5154 [inline]
 #3: ffff0000101ab588 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
 #3: ffff0000101ab588 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5509 [inline]
 #3: ffff0000101ab588 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x158c/0x358c drivers/usb/core/hub.c:5591
 #4: ffff00000d2ea668 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x174/0x2350 drivers/usb/core/hub.c:4582

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