INFO: task syz-executor.1:12028 blocked for more than 143 seconds. Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:12028 tgid:12028 ppid:6138 flags:0x00000005 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5376 [inline] __schedule+0x1354/0x2360 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6778 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6835 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 device_lock include/linux/device.h:992 [inline] usbdev_release+0x80/0x6d4 drivers/usb/core/devio.c:1096 __fput+0x308/0x8e4 fs/file_table.c:394 __fput_sync+0x60/0x9c fs/file_table.c:475 __do_sys_close fs/open.c:1587 [inline] __se_sys_close fs/open.c:1572 [inline] __arm64_sys_close+0x150/0x1e0 fs/open.c:1572 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Showing all locks held in the system: 1 lock held by khungtaskd/29: #0: ffff80008e6c48c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:300 2 locks held by klogd/5702: 2 locks held by getty/5862: #0: ffff0000d76400a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800094e802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2201 5 locks held by kworker/1:4/6194: #0: ffff0000c254b138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2600 #1: ffff8000975d7c20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2602 #2: ffff0000cd5ae190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #2: ffff0000cd5ae190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1b4/0x435c drivers/usb/core/hub.c:5768 #3: ffff0000cd5d9528 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3131 [inline] #3: ffff0000cd5d9528 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5337 [inline] #3: ffff0000cd5d9528 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5580 [inline] #3: ffff0000cd5d9528 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5740 [inline] #3: ffff0000cd5d9528 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x1e14/0x435c drivers/usb/core/hub.c:5822 #4: ffff0000cd180468 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5338 [inline] #4: ffff0000cd180468 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5580 [inline] #4: ffff0000cd180468 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5740 [inline] #4: ffff0000cd180468 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x1e3c/0x435c drivers/usb/core/hub.c:5822 2 locks held by kworker/u4:16/7772: 1 lock held by syz-executor.1/12028: #0: ffff0000cd5ae190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #0: ffff0000cd5ae190 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x80/0x6d4 drivers/usb/core/devio.c:1096 1 lock held by syz-executor.2/12219: #0: ffff0000cd5ae190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #0: ffff0000cd5ae190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x69c drivers/usb/core/devio.c:1051 1 lock held by syz-executor.1/12314: #0: ffff0000cd5ae190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #0: ffff0000cd5ae190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x69c drivers/usb/core/devio.c:1051 1 lock held by syz-executor.1/12319: #0: ffff0000cd5ae190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #0: ffff0000cd5ae190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x69c drivers/usb/core/devio.c:1051 1 lock held by syz-executor.2/12428: #0: ffff0000cd5ae190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #0: ffff0000cd5ae190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x69c drivers/usb/core/devio.c:1051 1 lock held by syz-executor.1/12524: #0: ffff0000cd5ae190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #0: ffff0000cd5ae190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x13c/0x69c drivers/usb/core/devio.c:1051 =============================================