Extracting prog: 4m45.590918043s Minimizing prog: 22m57.458259849s Simplifying prog options: 11m21.130910165s Extracting C: 5m11.641200847s Simplifying C: 0s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sched_setscheduler-syz_usbip_server_init-syz_open_dev$usbfs detailed listing: executing program 0: sched_setscheduler(0x0, 0x1, 0x0) syz_usbip_server_init(0x4) syz_open_dev$usbfs(&(0x7f0000000080), 0x70, 0x101301) program crashed: INFO: task hung in usbdev_release single: successfully extracted reproducer found reproducer with 3 syscalls minimizing guilty program testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sched_setscheduler-syz_usbip_server_init detailed listing: executing program 0: sched_setscheduler(0x0, 0x1, 0x0) syz_usbip_server_init(0x4) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sched_setscheduler-syz_open_dev$usbfs detailed listing: executing program 0: sched_setscheduler(0x0, 0x1, 0x0) syz_open_dev$usbfs(&(0x7f0000000080), 0x70, 0x101301) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usbip_server_init-syz_open_dev$usbfs detailed listing: executing program 0: syz_usbip_server_init(0x4) syz_open_dev$usbfs(&(0x7f0000000080), 0x70, 0x101301) program crashed: INFO: task hung in usbdev_release testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usbip_server_init-syz_open_dev$usbfs detailed listing: executing program 0: syz_usbip_server_init(0x4) syz_open_dev$usbfs(0x0, 0x70, 0x101301) program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usbip_server_init-syz_open_dev$usbfs program crashed: no output from test machine a never seen crash title: no output from test machine, ignore simplifying guilty program options testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usbip_server_init-syz_open_dev$usbfs detailed listing: executing program 0: syz_usbip_server_init(0x4) syz_open_dev$usbfs(&(0x7f0000000080), 0x70, 0x101301) program crashed: INFO: task hung in hub_port_init a never seen crash title: INFO: task hung in hub_port_init, ignore testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usbip_server_init-syz_open_dev$usbfs detailed listing: executing program 0: syz_usbip_server_init(0x4) syz_open_dev$usbfs(&(0x7f0000000080), 0x70, 0x101301) program crashed: INFO: task hung in usbdev_release extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usbip_server_init-syz_open_dev$usbfs program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usbip_server_init-syz_open_dev$usbfs detailed listing: executing program 0: syz_usbip_server_init(0x4) syz_open_dev$usbfs(&(0x7f0000000080), 0x70, 0x101301) program crashed: INFO: task hung in usbdev_release validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usbip_server_init-syz_open_dev$usbfs detailed listing: executing program 0: syz_usbip_server_init(0x4) syz_open_dev$usbfs(&(0x7f0000000080), 0x70, 0x101301) program crashed: INFO: task hung in usbdev_release validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usbip_server_init-syz_open_dev$usbfs detailed listing: executing program 0: syz_usbip_server_init(0x4) syz_open_dev$usbfs(&(0x7f0000000080), 0x70, 0x101301) program crashed: INFO: task hung in usbdev_release validation run: crashed=true reproducing took 53m30.77698351s repro crashed as (corrupted=false): INFO: task syz.0.19:6788 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.19 state:D stack:0 pid:6788 tgid:6788 ppid:6701 task_flags:0x400040 flags:0x00000001 Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:742 (T) context_switch kernel/sched/core.c:5256 [inline] __schedule+0x1250/0x2a7c kernel/sched/core.c:6863 __schedule_loop kernel/sched/core.c:6945 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6960 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7017 __mutex_lock_common+0xd04/0x2678 kernel/locking/mutex.c:692 __mutex_lock kernel/locking/mutex.c:776 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:828 device_lock include/linux/device.h:895 [inline] usbdev_release+0x78/0x6a8 drivers/usb/core/devio.c:1099 __fput+0x340/0x75c fs/file_table.c:468 ____fput+0x20/0x58 fs/file_table.c:496 task_work_run+0x1dc/0x260 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:44 [inline] exit_to_user_mode_loop+0x10c/0x18c kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] exit_to_user_mode_prepare_legacy include/linux/irq-entry-common.h:242 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline] el0_svc+0x17c/0x26c arch/arm64/kernel/entry-common.c:725 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Showing all locks held in the system: 1 lock held by khungtaskd/32: #0: ffff80008fa5b6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 2 locks held by pr/ttyAMA-1/43: 5 locks held by kworker/1:3/6177: #0: ffff0000c31f8d48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff8000a4ea7be0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 #2: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #2: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: hub_event+0x13c/0x3f0c drivers/usb/core/hub.c:5899 #3: ffff0000cfc65528 (&port_dev->status_lock){+.+.}-{4:4}, at: usb_lock_port drivers/usb/core/hub.c:3252 [inline] #3: ffff0000cfc65528 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5464 [inline] #3: ffff0000cfc65528 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5707 [inline] #3: ffff0000cfc65528 (&port_dev->status_lock){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5871 [inline] #3: ffff0000cfc65528 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_event+0x1abc/0x3f0c drivers/usb/core/hub.c:5953 #4: ffff0000cf539d68 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5465 [inline] #4: ffff0000cf539d68 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5707 [inline] #4: ffff0000cf539d68 (hcd->address0_mutex){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5871 [inline] #4: ffff0000cf539d68 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_event+0x1ae4/0x3f0c drivers/usb/core/hub.c:5953 2 locks held by getty/6353: #0: ffff0000d49cc0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800099f1e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfc8 drivers/tty/n_tty.c:2211 1 lock held by syz.0.19/6788: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_release+0x78/0x6a8 drivers/usb/core/devio.c:1099 1 lock held by syz.1.20/6815: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 1 lock held by syz.2.21/6841: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 1 lock held by syz.3.22/6867: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 1 lock held by syz.4.23/6905: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 1 lock held by syz.5.24/6941: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 1 lock held by syz.6.25/6976: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 1 lock held by syz.7.26/7012: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 1 lock held by syz.8.27/7051: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 1 lock held by syz.9.28/7089: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 ============================================= final repro crashed as (corrupted=false): INFO: task syz.0.19:6788 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.19 state:D stack:0 pid:6788 tgid:6788 ppid:6701 task_flags:0x400040 flags:0x00000001 Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:742 (T) context_switch kernel/sched/core.c:5256 [inline] __schedule+0x1250/0x2a7c kernel/sched/core.c:6863 __schedule_loop kernel/sched/core.c:6945 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6960 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7017 __mutex_lock_common+0xd04/0x2678 kernel/locking/mutex.c:692 __mutex_lock kernel/locking/mutex.c:776 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:828 device_lock include/linux/device.h:895 [inline] usbdev_release+0x78/0x6a8 drivers/usb/core/devio.c:1099 __fput+0x340/0x75c fs/file_table.c:468 ____fput+0x20/0x58 fs/file_table.c:496 task_work_run+0x1dc/0x260 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:44 [inline] exit_to_user_mode_loop+0x10c/0x18c kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] exit_to_user_mode_prepare_legacy include/linux/irq-entry-common.h:242 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline] el0_svc+0x17c/0x26c arch/arm64/kernel/entry-common.c:725 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Showing all locks held in the system: 1 lock held by khungtaskd/32: #0: ffff80008fa5b6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 2 locks held by pr/ttyAMA-1/43: 5 locks held by kworker/1:3/6177: #0: ffff0000c31f8d48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff8000a4ea7be0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 #2: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #2: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: hub_event+0x13c/0x3f0c drivers/usb/core/hub.c:5899 #3: ffff0000cfc65528 (&port_dev->status_lock){+.+.}-{4:4}, at: usb_lock_port drivers/usb/core/hub.c:3252 [inline] #3: ffff0000cfc65528 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5464 [inline] #3: ffff0000cfc65528 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5707 [inline] #3: ffff0000cfc65528 (&port_dev->status_lock){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5871 [inline] #3: ffff0000cfc65528 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_event+0x1abc/0x3f0c drivers/usb/core/hub.c:5953 #4: ffff0000cf539d68 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5465 [inline] #4: ffff0000cf539d68 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5707 [inline] #4: ffff0000cf539d68 (hcd->address0_mutex){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5871 [inline] #4: ffff0000cf539d68 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_event+0x1ae4/0x3f0c drivers/usb/core/hub.c:5953 2 locks held by getty/6353: #0: ffff0000d49cc0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800099f1e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfc8 drivers/tty/n_tty.c:2211 1 lock held by syz.0.19/6788: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_release+0x78/0x6a8 drivers/usb/core/devio.c:1099 1 lock held by syz.1.20/6815: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 1 lock held by syz.2.21/6841: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 1 lock held by syz.3.22/6867: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 1 lock held by syz.4.23/6905: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 1 lock held by syz.5.24/6941: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 1 lock held by syz.6.25/6976: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 1 lock held by syz.7.26/7012: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 1 lock held by syz.8.27/7051: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 1 lock held by syz.9.28/7089: #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:895 [inline] #0: ffff0000cfc61198 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x128/0x65c drivers/usb/core/devio.c:1054 =============================================