INFO: task syz-executor.0:31070 blocked for more than 143 seconds. Not tainted 5.13.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:28144 pid:31070 ppid: 8480 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7d4/0x10c0 kernel/locking/mutex.c:1104 device_lock include/linux/device.h:742 [inline] usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x272/0x280 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:301 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4193eb RSP: 002b:0000000000a9fb80 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000004193eb RDX: 0000000000570b48 RSI: ffffffff8916759e RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2cf255e8 R10: 0000000000000915 R11: 0000000000000293 R12: 000000000014345d R13: 00000000000003e8 R14: 000000000056bf80 R15: 0000000000143395 INFO: task syz-executor.5:31082 blocked for more than 143 seconds. Not tainted 5.13.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:28488 pid:31082 ppid: 9130 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7d4/0x10c0 kernel/locking/mutex.c:1104 device_lock include/linux/device.h:742 [inline] usbdev_open+0x19d/0x930 drivers/usb/core/devio.c:1029 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4b9/0x11b0 fs/open.c:826 do_open fs/namei.c:3361 [inline] path_openat+0x1c0e/0x27e0 fs/namei.c:3494 do_filp_open+0x190/0x3d0 fs/namei.c:3521 do_sys_openat2+0x16d/0x420 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1214 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4196c4 RSP: 002b:00007f29bf38fcc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00000000004196c4 RDX: 0000000000000001 RSI: 00007f29bf38fd60 RDI: 00000000ffffff9c RBP: 00007f29bf38fd60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001 R13: 0000000000a9fb1f R14: 00007f29bf390300 R15: 0000000000022000 INFO: task syz-executor.5:31084 blocked for more than 143 seconds. Not tainted 5.13.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:28488 pid:31084 ppid: 9130 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7d4/0x10c0 kernel/locking/mutex.c:1104 device_lock include/linux/device.h:742 [inline] usbdev_open+0x19d/0x930 drivers/usb/core/devio.c:1029 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4b9/0x11b0 fs/open.c:826 do_open fs/namei.c:3361 [inline] path_openat+0x1c0e/0x27e0 fs/namei.c:3494 do_filp_open+0x190/0x3d0 fs/namei.c:3521 do_sys_openat2+0x16d/0x420 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1214 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4196c4 RSP: 002b:00007f29bf36ecc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00000000004196c4 RDX: 0000000000000001 RSI: 00007f29bf36ed60 RDI: 00000000ffffff9c RBP: 00007f29bf36ed60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001 R13: 0000000000a9fb1f R14: 00007f29bf36f300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1633: #0: ffffffff8bf79260 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6333 2 locks held by in:imklog/8175: #0: ffff88801418f270 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:974 #1: ffffffff8bf681f8 (syslog_lock){....}-{2:2}, at: is_bpf_text_address+0x0/0x160 kernel/bpf/core.c:691 2 locks held by agetty/8367: #0: ffff88801dee3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:267 #1: ffffc90000f8c2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xd5b/0x12f0 drivers/tty/n_tty.c:2179 5 locks held by kworker/1:7/9748: #0: ffff8881415be938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881415be938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff8881415be938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff8881415be938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff8881415be938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff8881415be938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2247 #1: ffffc9000c497da8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2251 #2: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #2: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5590 #3: ffff888169d7e578 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3079 [inline] #3: ffff888169d7e578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5207 [inline] #3: ffff888169d7e578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5416 [inline] #3: ffff888169d7e578 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5562 [inline] #3: ffff888169d7e578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2178/0x4330 drivers/usb/core/hub.c:5644 #4: ffff88802136b468 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b5/0x2db0 drivers/usb/core/hub.c:4631 1 lock held by syz-executor.0/29209: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29213: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29226: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29233: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29243: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29251: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29259: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29266: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29274: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29287: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29393: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29398: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29413: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29420: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29423: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29431: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29501: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29509: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29522: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29694: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29703: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29715: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29724: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29731: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29737: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29755: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29763: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29771: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29779: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29789: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29798: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29805: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29813: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29822: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29829: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29841: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29846: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29856: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29863: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29905: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29914: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29919: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29925: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29932: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/29938: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/19571: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/19675: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.5/19715: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/19746: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/19765: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/19774: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/19802: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.5/19853: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/19907: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/19920: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/19980: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/20005: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/20047: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/20076: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/20812: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.0/31070: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 1 lock held by syz-executor.5/31082: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x19d/0x930 drivers/usb/core/devio.c:1029 1 lock held by syz-executor.5/31084: #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff8880213e3220 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x19d/0x930 drivers/usb/core/devio.c:1029 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1633 Comm: khungtaskd Not tainted 5.13.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline] watchdog+0xd48/0xfb0 kernel/hung_task.c:294 kthread+0x3b1/0x4a0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4849 Comm: systemd-journal Not tainted 5.13.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:set_root+0x7d/0x5a0 fs/namei.c:905 Code: 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 65 04 00 00 44 8b 63 38 31 ff 45 89 e7 <41> 81 e7 00 00 18 00 44 89 fe e8 e4 73 ac ff 45 85 ff 0f 85 23 04 RSP: 0018:ffffc9000161fb10 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffc9000161fd10 RCX: 0000000000000000 RDX: 1ffff920002c3fa9 RSI: ffffffff81c86fdb RDI: 0000000000000000 RBP: ffffc9000161fb88 R08: 0000000000000000 R09: 000000000000002f R10: ffffffff81c87600 R11: 000000000000002f R12: 0000000000001041 R13: ffffc9000161fd48 R14: ffff8880273e6c00 R15: 0000000000001041 FS: 00007f091c0dc8c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0919724000 CR3: 000000002d3c7000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nd_jump_root+0x3c7/0x570 fs/namei.c:933 path_init+0x1028/0x1910 fs/namei.c:2331 path_lookupat+0x30/0x850 fs/namei.c:2411 filename_lookup+0x1b1/0x570 fs/namei.c:2454 user_path_at include/linux/namei.h:60 [inline] do_faccessat+0x127/0x850 fs/open.c:425 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f091b3979c7 Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007fff737393f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 00007fff7373c420 RCX: 00007f091b3979c7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055db3127c9a3 RBP: 00007fff73739540 R08: 000055db312723e5 R09: 0000000000000018 R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 000055db32a7e8a0 R15: 00007fff73739a30