syzbot has found a reproducer for the following issue on: HEAD commit: a6b443748715 Merge branch 'for-next/core', remote-tracking.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=16b7e0f8880000 kernel config: https://syzkaller.appspot.com/x/.config?x=14bf9ec0df433b27 dashboard link: https://syzkaller.appspot.com/bug?extid=76629376e06e2c2ad626 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=111ff2d5080000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11667887080000 Downloadable assets: disk image: https://storage.googleapis.com/81b491dd5861/disk-a6b44374.raw.xz vmlinux: https://storage.googleapis.com/69c979cdc99a/vmlinux-a6b44374.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+76629376e06e2c2ad626@xxxxxxxxxxxxxxxxxxxxxxxxx INFO: task kworker/0:0:6 blocked for more than 143 seconds. Not tainted 6.0.0-rc4-syzkaller-17255-ga6b443748715 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack: 0 pid: 6 ppid: 2 flags:0x00000008 Workqueue: usb_hub_wq hub_event Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 usb_kill_urb+0xe0/0x1c8 drivers/usb/core/urb.c:726 usb_start_wait_urb+0xf8/0x1ec drivers/usb/core/message.c:64 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0xd8/0x17c drivers/usb/core/message.c:153 hub_port_init+0x534/0x1064 drivers/usb/core/hub.c:4825 hub_port_connect+0x528/0xe30 drivers/usb/core/hub.c:5282 hub_port_connect_change+0x3d8/0x70c drivers/usb/core/hub.c:5497 port_event+0x780/0x930 drivers/usb/core/hub.c:5653 hub_event+0x2f0/0x658 drivers/usb/core/hub.c:5735 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 INFO: task kworker/1:0:20 blocked for more than 143 seconds. Not tainted 6.0.0-rc4-syzkaller-17255-ga6b443748715 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0 state:D stack: 0 pid: 20 ppid: 2 flags:0x00000008 Workqueue: usb_hub_wq hub_event Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 usb_kill_urb+0xe0/0x1c8 drivers/usb/core/urb.c:726 usb_start_wait_urb+0xf8/0x1ec drivers/usb/core/message.c:64 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0xd8/0x17c drivers/usb/core/message.c:153 hub_port_init+0x534/0x1064 drivers/usb/core/hub.c:4825 hub_port_connect+0x528/0xe30 drivers/usb/core/hub.c:5282 hub_port_connect_change+0x3d8/0x70c drivers/usb/core/hub.c:5497 port_event+0x780/0x930 drivers/usb/core/hub.c:5653 hub_event+0x2f0/0x658 drivers/usb/core/hub.c:5735 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 INFO: task kworker/1:2:109 blocked for more than 143 seconds. Not tainted 6.0.0-rc4-syzkaller-17255-ga6b443748715 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack: 0 pid: 109 ppid: 2 flags:0x00000008 Workqueue: usb_hub_wq hub_event Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 usb_kill_urb+0xe0/0x1c8 drivers/usb/core/urb.c:726 usb_start_wait_urb+0xf8/0x1ec drivers/usb/core/message.c:64 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0xd8/0x17c drivers/usb/core/message.c:153 hub_port_init+0x534/0x1064 drivers/usb/core/hub.c:4825 hub_port_connect+0x528/0xe30 drivers/usb/core/hub.c:5282 hub_port_connect_change+0x3d8/0x70c drivers/usb/core/hub.c:5497 port_event+0x780/0x930 drivers/usb/core/hub.c:5653 hub_event+0x2f0/0x658 drivers/usb/core/hub.c:5735 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 INFO: task syz-executor535:3088 blocked for more than 143 seconds. Not tainted 6.0.0-rc4-syzkaller-17255-ga6b443748715 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor535 state:D stack: 0 pid: 3088 ppid: 3083 flags:0x00000001 Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6629 __mutex_lock_common+0x788/0xca8 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:835 [inline] usbdev_release+0x40/0x3b8 drivers/usb/core/devio.c:1087 __fput+0x198/0x3dc fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:353 task_work_run+0xc4/0x14c kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1f0 arch/arm64/kernel/signal.c:1127 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/0x150 arch/arm64/kernel/entry-common.c:625 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 INFO: task kworker/0:1:3090 blocked for more than 143 seconds. Not tainted 6.0.0-rc4-syzkaller-17255-ga6b443748715 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:1 state:D stack: 0 pid: 3090 ppid: 2 flags:0x00000008 Workqueue: usb_hub_wq hub_event Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 usb_kill_urb+0xe0/0x1c8 drivers/usb/core/urb.c:726 usb_start_wait_urb+0xf8/0x1ec drivers/usb/core/message.c:64 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0xd8/0x17c drivers/usb/core/message.c:153 hub_port_init+0x534/0x1064 drivers/usb/core/hub.c:4825 hub_port_connect+0x528/0xe30 drivers/usb/core/hub.c:5282 hub_port_connect_change+0x3d8/0x70c drivers/usb/core/hub.c:5497 port_event+0x780/0x930 drivers/usb/core/hub.c:5653 hub_event+0x2f0/0x658 drivers/usb/core/hub.c:5735 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 INFO: task syz-executor535:3091 blocked for more than 143 seconds. Not tainted 6.0.0-rc4-syzkaller-17255-ga6b443748715 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor535 state:D stack: 0 pid: 3091 ppid: 3080 flags:0x00000001 Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6629 __mutex_lock_common+0x788/0xca8 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:835 [inline] usbdev_release+0x40/0x3b8 drivers/usb/core/devio.c:1087 __fput+0x198/0x3dc fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:353 task_work_run+0xc4/0x14c kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1f0 arch/arm64/kernel/signal.c:1127 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/0x150 arch/arm64/kernel/entry-common.c:625 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 INFO: task syz-executor535:3092 blocked for more than 143 seconds. Not tainted 6.0.0-rc4-syzkaller-17255-ga6b443748715 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor535 state:D stack: 0 pid: 3092 ppid: 3082 flags:0x00000001 Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6629 __mutex_lock_common+0x788/0xca8 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:835 [inline] usbdev_release+0x40/0x3b8 drivers/usb/core/devio.c:1087 __fput+0x198/0x3dc fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:353 task_work_run+0xc4/0x14c kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1f0 arch/arm64/kernel/signal.c:1127 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/0x150 arch/arm64/kernel/entry-common.c:625 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 INFO: task syz-executor535:3096 blocked for more than 143 seconds. Not tainted 6.0.0-rc4-syzkaller-17255-ga6b443748715 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor535 state:D stack: 0 pid: 3096 ppid: 3084 flags:0x00000001 Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6629 __mutex_lock_common+0x788/0xca8 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:835 [inline] usbdev_release+0x40/0x3b8 drivers/usb/core/devio.c:1087 __fput+0x198/0x3dc fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:353 task_work_run+0xc4/0x14c kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1f0 arch/arm64/kernel/signal.c:1127 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/0x150 arch/arm64/kernel/entry-common.c:625 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 INFO: task syz-executor535:3099 blocked for more than 143 seconds. Not tainted 6.0.0-rc4-syzkaller-17255-ga6b443748715 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor535 state:D stack: 0 pid: 3099 ppid: 3076 flags:0x00000001 Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6629 __mutex_lock_common+0x788/0xca8 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:835 [inline] usbdev_release+0x40/0x3b8 drivers/usb/core/devio.c:1087 __fput+0x198/0x3dc fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:353 task_work_run+0xc4/0x14c kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1f0 arch/arm64/kernel/signal.c:1127 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/0x150 arch/arm64/kernel/entry-common.c:625 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 INFO: task kworker/1:1:3101 blocked for more than 143 seconds. Not tainted 6.0.0-rc4-syzkaller-17255-ga6b443748715 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack: 0 pid: 3101 ppid: 2 flags:0x00000008 Workqueue: usb_hub_wq hub_event Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 usb_kill_urb+0xe0/0x1c8 drivers/usb/core/urb.c:726 usb_start_wait_urb+0xf8/0x1ec drivers/usb/core/message.c:64 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0xd8/0x17c drivers/usb/core/message.c:153 hub_port_init+0x534/0x1064 drivers/usb/core/hub.c:4825 hub_port_connect+0x528/0xe30 drivers/usb/core/hub.c:5282 hub_port_connect_change+0x3d8/0x70c drivers/usb/core/hub.c:5497 port_event+0x780/0x930 drivers/usb/core/hub.c:5653 hub_event+0x2f0/0x658 drivers/usb/core/hub.c:5735 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 Showing all locks held in the system: 5 locks held by kworker/0:0/6: #0: ffff0000c0c12138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff80000f21bd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff0000c4a87990 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #2: ffff0000c4a87990 (&dev->mutex){....}-{3:3}, at: hub_event+0x8c/0x658 drivers/usb/core/hub.c:5681 #3: ffff0000c6299508 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3103 [inline] #3: ffff0000c6299508 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect+0x33c/0xe30 drivers/usb/core/hub.c:5249 #4: ffff0000c66b8468 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect+0x348/0xe30 drivers/usb/core/hub.c:5250 1 lock held by rcu_tasks_kthre/10: #0: ffff80000d4634e8 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/11: #0: ffff80000d463b38 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 5 locks held by kworker/1:0/20: #0: ffff0000c0c12138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff80000f293d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff0000c622f990 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #2: ffff0000c622f990 (&dev->mutex){....}-{3:3}, at: hub_event+0x8c/0x658 drivers/usb/core/hub.c:5681 #3: ffff0000c4bf1508 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3103 [inline] #3: ffff0000c4bf1508 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect+0x33c/0xe30 drivers/usb/core/hub.c:5249 #4: ffff0000c64c9168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect+0x348/0xe30 drivers/usb/core/hub.c:5250 1 lock held by khungtaskd/26: #0: ffff80000d4633c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:279 5 locks held by kworker/1:2/109: #0: ffff0000c0c12138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff8000126ebd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff0000c5283990 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #2: ffff0000c5283990 (&dev->mutex){....}-{3:3}, at: hub_event+0x8c/0x658 drivers/usb/core/hub.c:5681 #3: ffff0000c5285508 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3103 [inline] #3: ffff0000c5285508 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect+0x33c/0xe30 drivers/usb/core/hub.c:5249 #4: ffff0000c64d2368 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect+0x348/0xe30 drivers/usb/core/hub.c:5250 2 locks held by getty/2728: #0: ffff0000c6f4d898 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000f63e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177 1 lock held by syz-executor535/3088: #0: ffff0000c5283990 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #0: ffff0000c5283990 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x40/0x3b8 drivers/usb/core/devio.c:1087 5 locks held by kworker/0:1/3090: #0: ffff0000c0c12138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff8000127a3d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff0000c6289990 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #2: ffff0000c6289990 (&dev->mutex){....}-{3:3}, at: hub_event+0x8c/0x658 drivers/usb/core/hub.c:5681 #3: ffff0000c628b508 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3103 [inline] #3: ffff0000c628b508 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect+0x33c/0xe30 drivers/usb/core/hub.c:5249 #4: ffff0000c66b8f68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect+0x348/0xe30 drivers/usb/core/hub.c:5250 1 lock held by syz-executor535/3091: #0: ffff0000c5283990 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #0: ffff0000c5283990 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x40/0x3b8 drivers/usb/core/devio.c:1087 1 lock held by syz-executor535/3092: #0: ffff0000c5283990 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #0: ffff0000c5283990 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x40/0x3b8 drivers/usb/core/devio.c:1087 1 lock held by syz-executor535/3096: #0: ffff0000c5283990 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #0: ffff0000c5283990 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x40/0x3b8 drivers/usb/core/devio.c:1087 1 lock held by syz-executor535/3099: #0: ffff0000c5283990 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #0: ffff0000c5283990 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x40/0x3b8 drivers/usb/core/devio.c:1087 5 locks held by kworker/1:1/3101: #0: ffff0000c0c12138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff800012863d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff0000c62c9190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #2: ffff0000c62c9190 (&dev->mutex){....}-{3:3}, at: hub_event+0x8c/0x658 drivers/usb/core/hub.c:5681 #3: ffff0000c62cb508 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3103 [inline] #3: ffff0000c62cb508 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect+0x33c/0xe30 drivers/usb/core/hub.c:5249 #4: ffff0000c64d2d68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect+0x348/0xe30 drivers/usb/core/hub.c:5250 1 lock held by syz-executor535/3102: #0: ffff0000c5283990 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #0: ffff0000c5283990 (&dev->mutex){....}-{3:3}, at: usbdev_open+0xb0/0x370 drivers/usb/core/devio.c:1042 =============================================
