INFO: task kworker/1:3:2738 blocked for more than 143 seconds. Not tainted 5.4.0-rc1+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:3 D24752 2738 2 0x80004000 Workqueue: usb_hub_wq hub_event Call Trace: schedule+0xca/0x250 kernel/sched/core.c:4136 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4195 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x881/0x1360 kernel/locking/mutex.c:1103 input_disconnect_device drivers/input/input.c:732 [inline] __input_unregister_device+0x23/0x430 drivers/input/input.c:2081 input_unregister_device+0xb4/0xf0 drivers/input/input.c:2268 iforce_usb_disconnect+0x5e/0xf0 drivers/input/joystick/iforce/iforce-usb.c:261 usb_unbind_interface+0x1bd/0x8a0 drivers/usb/core/driver.c:423 __device_release_driver drivers/base/dd.c:1134 [inline] device_release_driver_internal+0x42f/0x500 drivers/base/dd.c:1165 bus_remove_device+0x2dc/0x4a0 drivers/base/bus.c:532 device_del+0x420/0xb20 drivers/base/core.c:2375 usb_disable_device+0x211/0x690 drivers/usb/core/message.c:1237 usb_disconnect+0x284/0x8d0 drivers/usb/core/hub.c:2199 hub_port_connect drivers/usb/core/hub.c:4949 [inline] hub_port_connect_change drivers/usb/core/hub.c:5213 [inline] port_event drivers/usb/core/hub.c:5359 [inline] hub_event+0x1454/0x3640 drivers/usb/core/hub.c:5441 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Showing all locks held in the system: 5 locks held by kworker/0:0/5: #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:620 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:647 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 kernel/workqueue.c:2240 #1: ffff8881da1c7dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 kernel/workqueue.c:2244 #2: ffff8881d5f9f080 (&dev->mutex){....}, at: device_lock include/linux/device.h:1462 [inline] #2: ffff8881d5f9f080 (&dev->mutex){....}, at: hub_event+0x17c/0x3640 drivers/usb/core/hub.c:5387 #3: ffff8881ccf2d700 (&dev->mutex){....}, at: device_lock include/linux/device.h:1462 [inline] #3: ffff8881ccf2d700 (&dev->mutex){....}, at: __device_attach+0x7b/0x360 drivers/base/dd.c:871 #4: ffff8881ca753490 (&dev->mutex){....}, at: device_lock include/linux/device.h:1462 [inline] #4: ffff8881ca753490 (&dev->mutex){....}, at: __device_attach+0x7b/0x360 drivers/base/dd.c:871 6 locks held by kworker/1:0/17: #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:620 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:647 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 kernel/workqueue.c:2240 #1: ffff8881da24fdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 kernel/workqueue.c:2244 #2: ffff8881d5f20200 (&dev->mutex){....}, at: device_lock include/linux/device.h:1462 [inline] #2: ffff8881d5f20200 (&dev->mutex){....}, at: hub_event+0x17c/0x3640 drivers/usb/core/hub.c:5387 #3: ffff8881d5f21620 (&port_dev->status_lock){+.+.}, at: usb_lock_port drivers/usb/core/hub.c:2996 [inline] #3: ffff8881d5f21620 (&port_dev->status_lock){+.+.}, at: hub_port_connect drivers/usb/core/hub.c:5029 [inline] #3: ffff8881d5f21620 (&port_dev->status_lock){+.+.}, at: hub_port_connect_change drivers/usb/core/hub.c:5213 [inline] #3: ffff8881d5f21620 (&port_dev->status_lock){+.+.}, at: port_event drivers/usb/core/hub.c:5359 [inline] #3: ffff8881d5f21620 (&port_dev->status_lock){+.+.}, at: hub_event+0x196a/0x3640 drivers/usb/core/hub.c:5441 #4: ffff8881d7132720 (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b6/0x2d30 drivers/usb/core/hub.c:4538 #5: ffff8881db331e58 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1215 [inline] #5: ffff8881db331e58 (&rq->lock){-.-.}, at: __schedule+0x21c/0x1cd0 kernel/sched/core.c:4017 1 lock held by khungtaskd/22: #0: ffffffff86cfe420 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:5335 1 lock held by rsyslogd/1597: #0: ffff8881d605d760 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 fs/file.c:801 2 locks held by getty/1687: #0: ffff8881d61f2290 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: ffffc9000046d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 drivers/tty/n_tty.c:2156 2 locks held by getty/1688: #0: ffff8881d925f790 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: ffffc900004512e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 drivers/tty/n_tty.c:2156 2 locks held by getty/1689: #0: ffff8881d61f6f10 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: ffffc900004612e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 drivers/tty/n_tty.c:2156 2 locks held by getty/1690: #0: ffff8881d925ab10 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: ffffc900004712e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 drivers/tty/n_tty.c:2156 2 locks held by getty/1691: #0: ffff8881d61f3c10 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: ffffc900004692e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 drivers/tty/n_tty.c:2156 2 locks held by getty/1692: #0: ffff8881d9259a10 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: ffffc900004752e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 drivers/tty/n_tty.c:2156 2 locks held by getty/1693: #0: ffff8881d648c490 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: ffffc9000043d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 drivers/tty/n_tty.c:2156 6 locks held by kworker/1:3/2738: #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:620 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:647 [inline] #0: ffff8881d9232628 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 kernel/workqueue.c:2240 #1: ffff8881d0c4fdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 kernel/workqueue.c:2244 #2: ffff8881d5f27900 (&dev->mutex){....}, at: device_lock include/linux/device.h:1462 [inline] #2: ffff8881d5f27900 (&dev->mutex){....}, at: hub_event+0x17c/0x3640 drivers/usb/core/hub.c:5387 #3: ffff8881c9a43500 (&dev->mutex){....}, at: device_lock include/linux/device.h:1462 [inline] #3: ffff8881c9a43500 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 drivers/usb/core/hub.c:2190 #4: ffff8881c8b8e790 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 drivers/base/dd.c:1162 #5: ffff8881c8b8ad28 (&dev->mutex#2){+.+.}, at: input_disconnect_device drivers/input/input.c:732 [inline] #5: ffff8881c8b8ad28 (&dev->mutex#2){+.+.}, at: __input_unregister_device+0x23/0x430 drivers/input/input.c:2081 5 locks held by kworker/0:6/2841: 2 locks held by syz-executor.0/4348: #0: ffff8881c1ba9248 (&evdev->mutex){+.+.}, at: evdev_close_device drivers/input/evdev.c:425 [inline] #0: ffff8881c1ba9248 (&evdev->mutex){+.+.}, at: evdev_release+0xeb/0x1c0 drivers/input/evdev.c:466 #1: ffff8881c8b8ad28 (&dev->mutex#2){+.+.}, at: input_close_device+0x42/0x1a0 drivers/input/input.c:673 1 lock held by syz-executor.3/5767: #0: ffff8881c1ba9248 (&evdev->mutex){+.+.}, at: evdev_open_device drivers/input/evdev.c:407 [inline] #0: ffff8881c1ba9248 (&evdev->mutex){+.+.}, at: evdev_open+0x293/0x510 drivers/input/evdev.c:499 1 lock held by syz-executor.0/5779: #0: ffff8881c1ba9248 (&evdev->mutex){+.+.}, at: evdev_open_device drivers/input/evdev.c:407 [inline] #0: ffff8881c1ba9248 (&evdev->mutex){+.+.}, at: evdev_open+0x293/0x510 drivers/input/evdev.c:499 1 lock held by syz-executor.0/5812: #0: ffff8881c1ba9248 (&evdev->mutex){+.+.}, at: evdev_open_device drivers/input/evdev.c:407 [inline] #0: ffff8881c1ba9248 (&evdev->mutex){+.+.}, at: evdev_open+0x293/0x510 drivers/input/evdev.c:499 1 lock held by syz-executor.0/5813: #0: ffff8881c1ba9248 (&evdev->mutex){+.+.}, at: evdev_open_device drivers/input/evdev.c:407 [inline] #0: ffff8881c1ba9248 (&evdev->mutex){+.+.}, at: evdev_open+0x293/0x510 drivers/input/evdev.c:499 1 lock held by syz-executor.0/5816: #0: ffff8881c1ba9248 (&evdev->mutex){+.+.}, at: evdev_open_device drivers/input/evdev.c:407 [inline] #0: ffff8881c1ba9248 (&evdev->mutex){+.+.}, at: evdev_open+0x293/0x510 drivers/input/evdev.c:499 1 lock held by syz-executor.0/5818: #0: ffff8881c1ba9248 (&evdev->mutex){+.+.}, at: evdev_open_device drivers/input/evdev.c:407 [inline] #0: ffff8881c1ba9248 (&evdev->mutex){+.+.}, at: evdev_open+0x293/0x510 drivers/input/evdev.c:499 1 lock held by syz-executor.4/5785: #0: ffff8881c1ba9248 (&evdev->mutex){+.+.}, at: evdev_open_device drivers/input/evdev.c:407 [inline] #0: ffff8881c1ba9248 (&evdev->mutex){+.+.}, at: evdev_open+0x293/0x510 drivers/input/evdev.c:499 3 locks held by syz-executor.5/5824: 3 locks held by syz-executor.5/5825: #0: ffff8881c7fa1260 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 fs/file.c:801 #1: ffff8881d56bea10 (sb_writers#3){.+.+}, at: file_start_write include/linux/fs.h:2882 [inline] #1: ffff8881d56bea10 (sb_writers#3){.+.+}, at: vfs_write+0x474/0x5c0 fs/read_write.c:557 #2: ffff8881abe23cd0 (&sb->s_type->i_mutex_key#10){++++}, at: inode_lock include/linux/fs.h:791 [inline] #2: ffff8881abe23cd0 (&sb->s_type->i_mutex_key#10){++++}, at: ext4_file_write_iter+0x210/0x1210 fs/ext4/file.c:237 1 lock held by syz-executor.5/5827: #0: ffff8881c7fa1260 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 fs/file.c:801 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 22 Comm: khungtaskd Not tainted 5.4.0-rc1+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xca/0x13e lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x55/0x96 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1b0/0x1c7 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0x9a4/0xe50 kernel/hung_task.c:289 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1739 Comm: syz-executor.1 Not tainted 5.4.0-rc1+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_acquire+0x10b4/0x3b60 kernel/locking/lockdep.c:3828 Code: 1e 00 00 48 81 c4 e8 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 80 3c 02 00 <0f> 85 db 20 00 00 49 81 3e 60 c9 67 88 0f 84 11 f0 ff ff 83 fe 01 RSP: 0018:ffff8881b88d7918 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000002 RDX: 1ffffffff0d9fc84 RSI: 0000000000000000 RDI: ffffffff86cfe420 RBP: ffff8881d426c800 R08: 0000000000000000 R09: 0000000000000001 R10: fffffbfff0f133e0 R11: ffffffff87899f07 R12: 0000000000000001 R13: 0000000000000000 R14: ffffffff86cfe420 R15: 0000000000000000 FS: 0000000001d22940(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020ecb000 CR3: 00000001b8d75000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4487 rcu_lock_acquire include/linux/rcupdate.h:208 [inline] rcu_read_lock include/linux/rcupdate.h:599 [inline] cpuacct_charge+0x9e/0x310 kernel/sched/cpuacct.c:347 cgroup_account_cputime include/linux/cgroup.h:778 [inline] update_curr+0x28c/0x810 kernel/sched/fair.c:861 dequeue_entity kernel/sched/fair.c:4066 [inline] dequeue_task_fair+0x1cf/0x1450 kernel/sched/fair.c:5291 __schedule+0x9ba/0x1cd0 kernel/sched/core.c:4029 schedule+0xca/0x250 kernel/sched/core.c:4136 freezable_schedule include/linux/freezer.h:172 [inline] do_nanosleep+0x21f/0x650 kernel/time/hrtimer.c:1871 hrtimer_nanosleep+0x249/0x4f0 kernel/time/hrtimer.c:1924 __do_sys_nanosleep kernel/time/hrtimer.c:1958 [inline] __se_sys_nanosleep kernel/time/hrtimer.c:1945 [inline] __x64_sys_nanosleep+0x19d/0x220 kernel/time/hrtimer.c:1945 do_syscall_64+0xb7/0x580 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457f00 Code: c0 5b 5d c3 66 0f 1f 44 00 00 8b 04 24 48 83 c4 18 5b 5d c3 66 0f 1f 44 00 00 83 3d 51 e8 61 00 00 75 14 b8 23 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 24 d3 fb ff c3 48 83 ec 08 e8 ea 46 00 00 RSP: 002b:00007ffe03e41868 EFLAGS: 00000246 ORIG_RAX: 0000000000000023 RAX: ffffffffffffffda RBX: 0000000000050b51 RCX: 0000000000457f00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffe03e41870 RBP: 000000000000010b R08: 0000000000000001 R09: 0000000001d22940 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 00007ffe03e418c0 R14: 00000000000504e8 R15: 00007ffe03e418d0