syzbot

INFO: task kworker/0:0:7 blocked for more than 143 seconds.
      Not tainted 5.15.116-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:0     state:D stack:    0 pid:    7 ppid:     2 flags:0x00000008
Workqueue: usb_hub_wq hub_event
Call trace:
 __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
 context_switch kernel/sched/core.c:5026 [inline]
 __schedule+0xf10/0x1e38 kernel/sched/core.c:6372
 schedule+0x11c/0x1c8 kernel/sched/core.c:6455
 usb_kill_urb+0x1c0/0x358 drivers/usb/core/urb.c:726
 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+0x89c/0x1e80 drivers/usb/core/hub.c:4832
 hub_port_connect drivers/usb/core/hub.c:5287 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5502 [inline]
 port_event drivers/usb/core/hub.c:5648 [inline]
 hub_event+0x1f9c/0x48c4 drivers/usb/core/hub.c:5730
 process_one_work+0x790/0x11b8 kernel/workqueue.c:2307
 worker_thread+0x910/0x1034 kernel/workqueue.c:2454
 kthread+0x37c/0x45c kernel/kthread.c:319
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870

Showing all locks held in the system:
5 locks held by kworker/0:0/7:
 #0: ffff0000c2842538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2280
 #1: ffff8000188d7c00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2282
 #2: ffff0000cea82220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
 #2: ffff0000cea82220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c8/0x48c4 drivers/usb/core/hub.c:5676
 #3: ffff0000cea865d8 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3091 [inline]
 #3: ffff0000cea865d8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5254 [inline]
 #3: ffff0000cea865d8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5502 [inline]
 #3: ffff0000cea865d8 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5648 [inline]
 #3: ffff0000cea865d8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x1a34/0x48c4 drivers/usb/core/hub.c:5730
 #4: ffff0000ce7cf268 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5255 [inline]
 #4: ffff0000ce7cf268 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5502 [inline]
 #4: ffff0000ce7cf268 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5648 [inline]
 #4: ffff0000ce7cf268 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x1a5c/0x48c4 drivers/usb/core/hub.c:5730
1 lock held by khungtaskd/27:
 #0: ffff800014ac19a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:268
2 locks held by getty/3739:
 #0: ffff0000d33ec098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340
 #1: ffff80001a29b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1200 drivers/tty/n_tty.c:2147
1 lock held by syz-executor487/3983:
 #0: ffff80001486a058 (tasklist_lock){.+.+}-{2:2}, at: cputime_adjust kernel/sched/cputime.c:547 [inline]
 #0: ffff80001486a058 (tasklist_lock){.+.+}-{2:2}, at: thread_group_cputime_adjusted+0xd0/0x2b0 kernel/sched/cputime.c:628
7 locks held by syz-executor487/32691:

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