INFO: task kworker/1:17:5975 blocked for more than 143 seconds. Not tainted 5.15.180-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:17 state:D stack: 0 pid: 5975 ppid: 2 flags:0x00000008 Workqueue: usb_hub_wq hub_event Call trace: __switch_to+0x308/0x588 arch/arm64/kernel/process.c:518 context_switch kernel/sched/core.c:5030 [inline] __schedule+0xf10/0x1e48 kernel/sched/core.c:6376 schedule+0x11c/0x1c8 kernel/sched/core.c:6459 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 get_bMaxPacketSize0 drivers/usb/core/hub.c:4750 [inline] hub_port_init+0x96c/0x21cc drivers/usb/core/hub.c:4947 hub_port_connect drivers/usb/core/hub.c:5396 [inline] hub_port_connect_change drivers/usb/core/hub.c:5607 [inline] port_event drivers/usb/core/hub.c:5753 [inline] hub_event+0x203c/0x46b8 drivers/usb/core/hub.c:5835 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310 worker_thread+0x910/0x1034 kernel/workqueue.c:2457 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 Showing all locks held in the system: 3 locks held by kworker/u4:0/9: 1 lock held by khungtaskd/27: #0: ffff800014d41be0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:311 2 locks held by getty/3794: #0: ffff0000d2d7c098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340 #1: ffff80001bfd02e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204 drivers/tty/n_tty.c:2158 2 locks held by kworker/0:3/4070: #0: ffff0000c0021938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283 #1: ffff80001fdb7c00 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285 4 locks held by kworker/u4:13/4463: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283 #1: ffff8000203f7c00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285 #2: ffff800016cb6a28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 #3: ffff800014d461e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #3: ffff800014d461e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x320/0x660 kernel/rcu/tree_exp.h:845 5 locks held by kworker/1:17/5975: #0: ffff0000c2752538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283 #1: ffff800020647c00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285 #2: ffff0000cf2e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #2: ffff0000cf2e3220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1b8/0x46b8 drivers/usb/core/hub.c:5781 #3: ffff0000cf2e65d8 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3138 [inline] #3: ffff0000cf2e65d8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5363 [inline] #3: ffff0000cf2e65d8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5607 [inline] #3: ffff0000cf2e65d8 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5753 [inline] #3: ffff0000cf2e65d8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x1ad0/0x46b8 drivers/usb/core/hub.c:5835 #4: ffff0000cece3e68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5364 [inline] #4: ffff0000cece3e68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5607 [inline] #4: ffff0000cece3e68 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5753 [inline] #4: ffff0000cece3e68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x1af4/0x46b8 drivers/usb/core/hub.c:5835 1 lock held by syz.4.1167/9053: #0: ffff800016cb6a28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 2 locks held by syz.2.1168/9055: 2 locks held by syz.6.1170/9064: 1 lock held by syz.5.1169/9060: #0: ffff0000d8fef418 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] #0: ffff0000d8fef418 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x15c/0x2b4 mm/util.c:549 1 lock held by syz.5.1169/9061: =============================================