INFO: task syz-executor.0:11764 blocked for more than 143 seconds. Not tainted 6.1.19-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:11764 ppid:4341 flags:0x00000001 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5238 [inline] __schedule+0xf9c/0x1d84 kernel/sched/core.c:6551 schedule+0xc4/0x170 kernel/sched/core.c:6627 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6686 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 device_lock include/linux/device.h:836 [inline] usbdev_release+0x80/0x6fc drivers/usb/core/devio.c:1087 __fput+0x30c/0x7bc fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x240/0x2f0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2144/0x3470 arch/arm64/kernel/signal.c:1132 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffff800015905db0 (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: ffff8000159065b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510 5 locks held by kworker/1:1/24: #0: ffff0000c26a0d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x664/0x16f4 kernel/workqueue.c:2262 #1: ffff800019df7c20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x16f4 kernel/workqueue.c:2264 #2: ffff0000cf999190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:836 [inline] #2: ffff0000cf999190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c0/0x44a0 drivers/usb/core/hub.c:5683 #3: ffff0000cf99d510 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3105 [inline] #3: ffff0000cf99d510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5251 [inline] #3: ffff0000cf99d510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5499 [inline] #3: ffff0000cf99d510 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5655 [inline] #3: ffff0000cf99d510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x1b78/0x44a0 drivers/usb/core/hub.c:5737 #4: ffff0000cf6dc468 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5252 [inline] #4: ffff0000cf6dc468 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5499 [inline] #4: ffff0000cf6dc468 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5655 [inline] #4: ffff0000cf6dc468 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x1ba0/0x44a0 drivers/usb/core/hub.c:5737 1 lock held by khungtaskd/28: #0: ffff800015905be0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:305 3 locks held by kworker/u4:3/59: 2 locks held by kworker/0:3/3803: #0: ffff0000c0021d38 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x664/0x16f4 kernel/workqueue.c:2262 #1: ffff80001f677c20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x16f4 kernel/workqueue.c:2264 1 lock held by udevd/3839: 2 locks held by getty/3990: #0: ffff0000d4102098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001bb902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2177 3 locks held by kworker/u4:7/6764: 1 lock held by syz-executor.0/11764: #0: ffff0000cf999190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:836 [inline] #0: ffff0000cf999190 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x80/0x6fc drivers/usb/core/devio.c:1087 1 lock held by syz-executor.2/11812: #0: ffff0000cf999190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:836 [inline] #0: ffff0000cf999190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x6c0 drivers/usb/core/devio.c:1042 2 locks held by syz-executor.3/14517: #0: ffff800017d071e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffff800017d071e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e8/0xd94 net/core/rtnetlink.c:6088 #1: ffff80001590b1b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline] #1: ffff80001590b1b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3e0/0x768 kernel/rcu/tree_exp.h:948 3 locks held by syz-executor.5/14526: 2 locks held by syz-executor.1/14530: #0: ffff800017cfb1d0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d4/0x590 net/core/net_namespace.c:474 #1: ffff800017d071e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 =============================================