INFO: task kworker/1:10:4555 blocked for more than 143 seconds. Not tainted 6.1.36-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:10 state:D stack:0 pid:4555 ppid:2 flags:0x00000008 Workqueue: usb_hub_wq hub_event Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5241 [inline] __schedule+0xee4/0x1c98 kernel/sched/core.c:6554 schedule+0xc4/0x170 kernel/sched/core.c:6630 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+0x89c/0x1eb8 drivers/usb/core/hub.c:4827 hub_port_connect drivers/usb/core/hub.c:5284 [inline] hub_port_connect_change drivers/usb/core/hub.c:5499 [inline] port_event drivers/usb/core/hub.c:5655 [inline] hub_event+0x20b8/0x44a0 drivers/usb/core/hub.c:5737 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2289 worker_thread+0x8e4/0xfec kernel/workqueue.c:2436 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffff800015794e70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510 1 lock held by rcu_tasks_trace/13: #0: ffff800015795670 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510 1 lock held by khungtaskd/28: #0: ffff800015794ca0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:305 3 locks held by kworker/u4:4/499: 1 lock held by udevd/3839: 2 locks held by getty/3977: #0: ffff0000d6257098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001ba502f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2177 1 lock held by syz-executor.2/4279: 5 locks held by kworker/1:10/4555: #0: ffff0000c46a0d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2262 #1: ffff800020f77c20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2264 #2: ffff0000d1823190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:836 [inline] #2: ffff0000d1823190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c0/0x44a0 drivers/usb/core/hub.c:5683 #3: ffff0000d1826510 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3105 [inline] #3: ffff0000d1826510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5251 [inline] #3: ffff0000d1826510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5499 [inline] #3: ffff0000d1826510 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5655 [inline] #3: ffff0000d1826510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x1b78/0x44a0 drivers/usb/core/hub.c:5737 #4: ffff0000d1471068 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5252 [inline] #4: ffff0000d1471068 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5499 [inline] #4: ffff0000d1471068 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5655 [inline] #4: ffff0000d1471068 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x1ba0/0x44a0 drivers/usb/core/hub.c:5737 2 locks held by kworker/u4:15/12614: #0: ffff0001b45c2598 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:537 [inline] #0: ffff0001b45c2598 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1355 [inline] #0: ffff0001b45c2598 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1645 [inline] #0: ffff0001b45c2598 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2c4/0x1c98 kernel/sched/core.c:6471 #1: ffff0001b45afb88 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3c0/0x618 kernel/sched/psi.c:952 2 locks held by kworker/u4:18/12645: 2 locks held by kworker/0:13/21075: #0: ffff0000c0021d38 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2262 #1: ffff80001ff97c20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2264 3 locks held by udevd/24652: 2 locks held by dhcpcd-run-hook/25787: #0: ffff0001b45c2598 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:537 [inline] #0: ffff0001b45c2598 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1355 [inline] #0: ffff0001b45c2598 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1645 [inline] #0: ffff0001b45c2598 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2c4/0x1c98 kernel/sched/core.c:6471 #1: ffff800015606278 (cpu_asid_lock){....}-{2:2}, at: check_and_switch_context+0x13c/0x728 arch/arm64/mm/context.c:246 1 lock held by syz-executor.0/25788: #0: ffff0000c3867948 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] #0: ffff0000c3867948 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x15c/0x2b4 mm/util.c:518 2 locks held by syz-executor.0/25789: 2 locks held by syz-executor.1/25805: #0: ffff800017b8e848 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 #1: ffff80001579a278 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline] #1: ffff80001579a278 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3e0/0x768 kernel/rcu/tree_exp.h:950 2 locks held by syz-executor.5/25810: #0: ffff800017b829d0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d4/0x590 net/core/net_namespace.c:474 #1: ffff800017b8e848 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock_killable+0x20/0x2c net/core/rtnetlink.c:80 1 lock held by sed/25824: =============================================