INFO: task kworker/1:2:83 blocked for more than 143 seconds. Not tainted 5.4.0-rc6+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:2 D23856 83 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:2376 usb_disable_device+0x211/0x690 drivers/usb/core/message.c:1237 usb_disconnect+0x284/0x8d0 drivers/usb/core/hub.c:2200 hub_port_connect drivers/usb/core/hub.c:5035 [inline] hub_port_connect_change drivers/usb/core/hub.c:5324 [inline] port_event drivers/usb/core/hub.c:5470 [inline] hub_event+0x16f2/0x3800 drivers/usb/core/hub.c:5552 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: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:620 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:647 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 kernel/workqueue.c:2240 #1: ffff8881da1dfdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 kernel/workqueue.c:2244 #2: ffff8881d514e200 (&dev->mutex){....}, at: device_lock include/linux/device.h:1462 [inline] #2: ffff8881d514e200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 drivers/usb/core/hub.c:5498 #3: ffff8881cbc74200 (&dev->mutex){....}, at: device_lock include/linux/device.h:1462 [inline] #3: ffff8881cbc74200 (&dev->mutex){....}, at: __device_attach+0x7b/0x360 drivers/base/dd.c:871 #4: ffff8881af121190 (&dev->mutex){....}, at: device_lock include/linux/device.h:1462 [inline] #4: ffff8881af121190 (&dev->mutex){....}, at: __device_attach+0x7b/0x360 drivers/base/dd.c:871 5 locks held by kworker/0:1/12: #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:620 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:647 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 kernel/workqueue.c:2240 #1: ffff8881da227dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 kernel/workqueue.c:2244 #2: ffff8881d5175200 (&dev->mutex){....}, at: device_lock include/linux/device.h:1462 [inline] #2: ffff8881d5175200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 drivers/usb/core/hub.c:5498 #3: ffff8881c6871200 (&dev->mutex){....}, at: device_lock include/linux/device.h:1462 [inline] #3: ffff8881c6871200 (&dev->mutex){....}, at: __device_attach+0x7b/0x360 drivers/base/dd.c:871 #4: ffff8881d5049560 (hcd->bandwidth_mutex){+.+.}, at: usb_set_configuration+0x492/0x1670 drivers/usb/core/message.c:1886 4 locks held by kworker/1:0/17: #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:620 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:647 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 kernel/workqueue.c:2240 #1: ffff8881da267dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 kernel/workqueue.c:2244 #2: ffff8881d51eb200 (&dev->mutex){....}, at: device_lock include/linux/device.h:1462 [inline] #2: ffff8881d51eb200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 drivers/usb/core/hub.c:5498 #3: ffff8881d51ed520 (&port_dev->status_lock){+.+.}, at: usb_lock_port drivers/usb/core/hub.c:2997 [inline] #3: ffff8881d51ed520 (&port_dev->status_lock){+.+.}, at: hub_event+0x4e5/0x3800 drivers/usb/core/hub.c:5551 1 lock held by khungtaskd/23: #0: ffffffff86cfe8a0 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:5335 6 locks held by kworker/1:2/83: #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:620 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:647 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 kernel/workqueue.c:2240 #1: ffff8881d89efdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 kernel/workqueue.c:2244 #2: ffff8881d5107200 (&dev->mutex){....}, at: device_lock include/linux/device.h:1462 [inline] #2: ffff8881d5107200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 drivers/usb/core/hub.c:5498 #3: ffff8881d3655200 (&dev->mutex){....}, at: device_lock include/linux/device.h:1462 [inline] #3: ffff8881d3655200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 drivers/usb/core/hub.c:2191 #4: ffff8881d52b1190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 drivers/base/dd.c:1162 #5: ffff8881c98d32a8 (&dev->mutex#2){+.+.}, at: input_disconnect_device drivers/input/input.c:732 [inline] #5: ffff8881c98d32a8 (&dev->mutex#2){+.+.}, at: __input_unregister_device+0x23/0x430 drivers/input/input.c:2081 1 lock held by rsyslogd/1595: 2 locks held by getty/1685: #0: ffff8881d15ea090 (&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/1686: #0: ffff8881d1818090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: ffffc9000047d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 drivers/tty/n_tty.c:2156 2 locks held by getty/1687: #0: ffff8881d1a2c090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: ffffc900004552e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 drivers/tty/n_tty.c:2156 2 locks held by getty/1688: #0: ffff8881d1a41090 (&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/1689: #0: ffff8881d1a40090 (&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/1690: #0: ffff8881d15e8090 (&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/1691: #0: ffff8881d22b9090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: ffffc9000044d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 drivers/tty/n_tty.c:2156 6 locks held by kworker/1:4/3274: 6 locks held by kworker/0:5/3388: #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:620 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:647 [inline] #0: ffff8881d8fb4d28 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 kernel/workqueue.c:2240 #1: ffff8881ce86fdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 kernel/workqueue.c:2244 #2: ffff8881d518c200 (&dev->mutex){....}, at: device_lock include/linux/device.h:1462 [inline] #2: ffff8881d518c200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 drivers/usb/core/hub.c:5498 #3: ffff8881cfaed200 (&dev->mutex){....}, at: device_lock include/linux/device.h:1462 [inline] #3: ffff8881cfaed200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 drivers/usb/core/hub.c:2191 #4: ffff8881cb8f6190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 drivers/base/dd.c:1162 #5: ffffffff872e34e0 (input_mutex){+.+.}, at: __input_unregister_device+0x118/0x430 drivers/input/input.c:2083 2 locks held by syz-executor.5/9390: #0: ffff8881ce03d148 (&evdev->mutex){+.+.}, at: evdev_close_device drivers/input/evdev.c:425 [inline] #0: ffff8881ce03d148 (&evdev->mutex){+.+.}, at: evdev_release+0xeb/0x1c0 drivers/input/evdev.c:466 #1: ffff8881c98d32a8 (&dev->mutex#2){+.+.}, at: input_close_device+0x42/0x1a0 drivers/input/input.c:673 1 lock held by syz-executor.3/10913: #0: ffff8881ce03d148 (&evdev->mutex){+.+.}, at: evdev_open_device drivers/input/evdev.c:407 [inline] #0: ffff8881ce03d148 (&evdev->mutex){+.+.}, at: evdev_open+0x293/0x510 drivers/input/evdev.c:499 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 23 Comm: khungtaskd Not tainted 5.4.0-rc6+ #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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 1743 Comm: syz-executor.4 Not tainted 5.4.0-rc6+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:153 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x9/0x50 kernel/kcov.c:187 Code: 90 65 48 8b 04 25 00 ef 01 00 48 8b 80 40 12 00 00 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 65 48 8b 04 25 00 ef 01 00 <65> 8b 15 58 c8 c3 7e 81 e2 00 01 1f 00 48 8b 34 24 75 2b 8b 90 28 RSP: 0018:ffff8881b01cfaf0 EFLAGS: 00000246 RAX: ffff8881cfc5b000 RBX: 0000000000000000 RCX: ffffffff81148feb RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: ffff8881ae7be000 R08: ffff8881cfc5b000 R09: fffffbfff0d81219 R10: fffffbfff0d81218 R11: ffffffff86c090c3 R12: 0000000000000000 R13: 0000000000000004 R14: 00007ffecbb12400 R15: ffff8881b01cfcf8 FS: 0000000000be4940(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001b0196000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: eligible_child kernel/exit.c:973 [inline] wait_consider_task+0x248/0x3540 kernel/exit.c:1293 do_wait_thread kernel/exit.c:1396 [inline] do_wait+0x428/0x970 kernel/exit.c:1467 kernel_wait4+0x14c/0x260 kernel/exit.c:1639 __do_sys_wait4+0x147/0x160 kernel/exit.c:1651 do_syscall_64+0xb7/0x580 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4144aa Code: 0f 83 6a 18 00 00 c3 66 0f 1f 84 00 00 00 00 00 8b 05 ce 3f 66 00 85 c0 75 36 45 31 d2 48 63 d2 48 63 ff b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 d4 ff ff ff f7 RSP: 002b:00007ffecbb123c8 EFLAGS: 00000246 ORIG_RAX: 000000000000003d RAX: ffffffffffffffda RBX: 000000000009bcfe RCX: 00000000004144aa RDX: 0000000040000001 RSI: 00007ffecbb12400 RDI: ffffffffffffffff RBP: 0000000000000273 R08: 0000000000000001 R09: 0000000000be4940 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000012 R13: 00007ffecbb12400 R14: 000000000009b608 R15: 00007ffecbb12410