INFO: task kworker/0:0:6 blocked for more than 143 seconds. Not tainted 5.18.0-syzkaller-dirty #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:24464 pid: 6 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5073 [inline] __schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388 schedule+0xd2/0x1f0 kernel/sched/core.c:6460 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6519 __mutex_lock_common kernel/locking/mutex.c:673 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733 input_disconnect_device drivers/input/input.c:784 [inline] __input_unregister_device+0x24/0x470 drivers/input/input.c:2236 input_unregister_device+0xb4/0xf0 drivers/input/input.c:2431 iforce_usb_disconnect+0x5e/0xf0 drivers/input/joystick/iforce/iforce-usb.c:261 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:532 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:524 __device_release_driver drivers/base/dd.c:1200 [inline] device_release_driver_internal+0x4a3/0x680 drivers/base/dd.c:1223 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3592 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x278/0x6ec drivers/usb/core/hub.c:2228 hub_port_connect drivers/usb/core/hub.c:5207 [inline] hub_port_connect_change drivers/usb/core/hub.c:5507 [inline] port_event drivers/usb/core/hub.c:5665 [inline] hub_event+0x1e74/0x4680 drivers/usb/core/hub.c:5747 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x854/0x1080 kernel/workqueue.c:2438 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Showing all threads with locks held in the system: task:kworker/0:0 state:D stack:24464 pid: 6 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5073 [inline] __schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388 schedule+0xd2/0x1f0 kernel/sched/core.c:6460 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6519 __mutex_lock_common kernel/locking/mutex.c:673 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733 input_disconnect_device drivers/input/input.c:784 [inline] __input_unregister_device+0x24/0x470 drivers/input/input.c:2236 input_unregister_device+0xb4/0xf0 drivers/input/input.c:2431 iforce_usb_disconnect+0x5e/0xf0 drivers/input/joystick/iforce/iforce-usb.c:261 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:532 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:524 __device_release_driver drivers/base/dd.c:1200 [inline] device_release_driver_internal+0x4a3/0x680 drivers/base/dd.c:1223 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3592 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x278/0x6ec drivers/usb/core/hub.c:2228 hub_port_connect drivers/usb/core/hub.c:5207 [inline] hub_port_connect_change drivers/usb/core/hub.c:5507 [inline] port_event drivers/usb/core/hub.c:5665 [inline] hub_event+0x1e74/0x4680 drivers/usb/core/hub.c:5747 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x854/0x1080 kernel/workqueue.c:2438 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 6 locks held by kworker/0:0/6: #0: ffff8881457f4138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881457f4138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff8881457f4138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff8881457f4138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff8881457f4138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff8881457f4138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc900000b7da8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 #2: ffff88801f817220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #2: ffff88801f817220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4680 drivers/usb/core/hub.c:5693 #3: ffff88814bc3b220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #3: ffff88814bc3b220 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x6ec drivers/usb/core/hub.c:2219 #4: ffff88814bc3a1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #4: ffff88814bc3a1a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1033 [inline] #4: ffff88814bc3a1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa0/0x680 drivers/base/dd.c:1220 #5: ffff88807b7202c0 (&dev->mutex#2){+.+.}-{3:3}, at: input_disconnect_device drivers/input/input.c:784 [inline] #5: ffff88807b7202c0 (&dev->mutex#2){+.+.}-{3:3}, at: __input_unregister_device+0x24/0x470 drivers/input/input.c:2236 task:kworker/u4:5 state:R running task stack:22984 pid: 2419 ppid: 2 flags:0x00004000 Workqueue: 0x0 (bat_events) Call Trace: no locks held by kworker/u4:5/2419. task:acpid state:S stack:23384 pid: 2951 ppid: 1 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5073 [inline] __schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388 schedule+0xd2/0x1f0 kernel/sched/core.c:6460 iforce_close+0x396/0x4b0 drivers/input/joystick/iforce/iforce-main.c:203 input_close_device+0x156/0x1f0 drivers/input/input.c:734 joydev_close_device drivers/input/joydev.c:223 [inline] joydev_release+0x222/0x290 drivers/input/joydev.c:252 __fput+0x277/0x9d0 fs/file_table.c:317 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f135bd3ffc3 RSP: 002b:00007ffe571c93d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007ffe571c9648 RCX: 00007f135bd3ffc3 RDX: 00007ffe571c8808 RSI: 000000000000001e RDI: 000000000000000a RBP: 000000000000000a R08: 00007ffe571c965c R09: 00007ffe571c9548 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe571c9548 R13: 00007ffe571c9648 R14: 0000000000000020 R15: 0000000000000000 2 locks held by acpid/2951: #0: ffff88807bd28158 (&joydev->mutex){+.+.}-{3:3}, at: joydev_close_device drivers/input/joydev.c:220 [inline] #0: ffff88807bd28158 (&joydev->mutex){+.+.}-{3:3}, at: joydev_release+0x187/0x290 drivers/input/joydev.c:252 #1: ffff88807b7202c0 (&dev->mutex#2){+.+.}-{3:3}, at: input_close_device+0x42/0x1f0 drivers/input/input.c:726 task:getty state:S stack:23384 pid: 3282 ppid: 1 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5073 [inline] __schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388 schedule+0xd2/0x1f0 kernel/sched/core.c:6460 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1860 wait_woken+0x18b/0x1f0 kernel/sched/wait.c:459 n_tty_read+0xee6/0x1230 drivers/tty/n_tty.c:2141 iterate_tty_read drivers/tty/tty_io.c:858 [inline] tty_read+0x33a/0x5d0 drivers/tty/tty_io.c:933 call_read_iter include/linux/fs.h:2044 [inline] new_sync_read+0x384/0x5f0 fs/read_write.c:401 vfs_read+0x492/0x5d0 fs/read_write.c:482 ksys_read+0x127/0x250 fs/read_write.c:620 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f64818698fe RSP: 002b:00007fffba77d598 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 000056469eebe910 RCX: 00007f64818698fe RDX: 0000000000000001 RSI: 00007fffba77d5b0 RDI: 0000000000000000 RBP: 000056469eebe970 R08: 0000000000000007 R09: 000056469eebfcd0 R10: 0000000000000063 R11: 0000000000000246 R12: 000056469eebe9ac R13: 00007fffba77d5b0 R14: 0000000000000000 R15: 000056469eebe9ac 2 locks held by getty/3282: #0: ffff88814bda8098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc90002ce62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcea/0x1230 drivers/tty/n_tty.c:2075 task:udevd state:S stack:27784 pid: 4052 ppid: 2966 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5073 [inline] __schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388 schedule+0xd2/0x1f0 kernel/sched/core.c:6460 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6519 __mutex_lock_common kernel/locking/mutex.c:673 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733 input_open_device+0x4a/0x320 drivers/input/input.c:656 evdev_open_device drivers/input/evdev.c:400 [inline] evdev_open+0x538/0x6a0 drivers/input/evdev.c:487 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4a1/0x11e0 fs/open.c:824 do_open fs/namei.c:3476 [inline] path_openat+0x1c71/0x2910 fs/namei.c:3609 do_filp_open+0x1aa/0x400 fs/namei.c:3636 do_sys_openat2+0x16d/0x4c0 fs/open.c:1213 do_sys_open fs/open.c:1229 [inline] __do_sys_openat fs/open.c:1245 [inline] __se_sys_openat fs/open.c:1240 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1240 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f6bceb25697 RSP: 002b:00007ffc41cee720 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00000000cebf5a01 RCX: 00007f6bceb25697 RDX: 0000000000080000 RSI: 000055932d674ec0 RDI: 00000000ffffff9c RBP: 000055932d674ec0 R08: 000055932d67c8a0 R09: 00007f6bcebf5a00 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 0000000000000000 R14: 000055932ca01150 R15: 0000000000000000 2 locks held by udevd/4052: #0: ffff888140b00110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_open_device drivers/input/evdev.c:393 [inline] #0: ffff888140b00110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_open+0x2f3/0x6a0 drivers/input/evdev.c:487 #1: ffff88807b7202c0 (&dev->mutex#2){+.+.}-{3:3}, at: input_open_device+0x4a/0x320 drivers/input/input.c:656 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.18.0-syzkaller-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:225 [inline] watchdog+0xc53/0xf80 kernel/hung_task.c:382 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 2419 Comm: kworker/u4:5 Not tainted 5.18.0-syzkaller-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:lockdep_hardirqs_on+0x8/0x100 kernel/locking/lockdep.c:4300 Code: cc cc 80 3d 08 21 37 04 00 74 01 c3 48 c7 c7 40 54 cc 89 c6 05 f7 20 37 04 01 e8 4b 29 bb ff 0f 0b c3 44 8b 05 95 08 4c 04 55 <53> 65 48 8b 1c 25 00 70 02 00 45 85 c0 0f 84 85 00 00 00 65 8b 05 RSP: 0018:ffffc9000a9b79d0 EFLAGS: 00000046 RAX: 0000000000000001 RBX: 0000000000000007 RCX: 1ffffffff20c8346 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff812b8b41 RBP: ffff8881400fa558 R08: 0000000000000001 R09: ffffffff9063a917 R10: 0000000000000001 R11: 000000000000003f R12: ffffffff81c45fd9 R13: 0000000000000001 R14: 0000000000000fda R15: ffffffff8bebc100 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faf5a7da110 CR3: 000000000ba8e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __text_poke+0x6e1/0x8c0 arch/x86/kernel/alternative.c:1096 text_poke arch/x86/kernel/alternative.c:1121 [inline] text_poke_bp_batch+0x433/0x6b0 arch/x86/kernel/alternative.c:1436 text_poke_flush arch/x86/kernel/alternative.c:1542 [inline] text_poke_flush arch/x86/kernel/alternative.c:1539 [inline] text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1549 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146 jump_label_update+0x32f/0x410 kernel/jump_label.c:830 static_key_enable_cpuslocked+0x1b1/0x260 kernel/jump_label.c:177 static_key_enable+0x16/0x20 kernel/jump_label.c:190 toggle_allocation_gate mm/kfence/core.c:774 [inline] toggle_allocation_gate+0x100/0x390 mm/kfence/core.c:766 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298