INFO: task kworker/0:6:7243 blocked for more than 143 seconds. Not tainted 5.11.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:6 state:D stack:25464 pid: 7243 ppid: 2 flags:0x00004000 Workqueue: pm hcd_resume_work Call Trace: context_switch kernel/sched/core.c:4327 [inline] __schedule+0x91b/0x1f90 kernel/sched/core.c:5078 schedule+0xcb/0x270 kernel/sched/core.c:5157 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:5216 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x7ef/0x10e0 kernel/locking/mutex.c:1103 device_lock include/linux/device.h:737 [inline] usb_remote_wakeup+0x1f/0xe0 drivers/usb/core/hub.c:3643 process_one_work+0x98d/0x1580 kernel/workqueue.c:2275 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421 kthread+0x38c/0x460 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Showing all locks held in the system: 3 locks held by kworker/0:0/5: #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1580 kernel/workqueue.c:2246 #1: ffffc9000005fda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1580 kernel/workqueue.c:2250 #2: ffff888109222218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:737 [inline] #2: ffff888109222218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4320 drivers/usb/core/hub.c:5537 3 locks held by kworker/0:1/7: #0: ffff888100315d38 ((wq_completion)pm){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888100315d38 ((wq_completion)pm){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888100315d38 ((wq_completion)pm){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888100315d38 ((wq_completion)pm){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888100315d38 ((wq_completion)pm){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888100315d38 ((wq_completion)pm){+.+.}-{0:0}, at: process_one_work+0x871/0x1580 kernel/workqueue.c:2246 #1: ffffc9000007fda8 ((work_completion)(&hcd->wakeup_work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1580 kernel/workqueue.c:2250 #2: ffff88810926a218 (&dev->mutex){....}-{3:3} , at: device_lock include/linux/device.h:737 [inline] , at: usb_remote_wakeup+0x1f/0xe0 drivers/usb/core/hub.c:3643 6 locks held by kworker/1:0/17: 1 lock held by khungtaskd/1270: #0: ffffffff87a784a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6259 3 locks held by kworker/0:2/1548: #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1580 kernel/workqueue.c:2246 #1: ffffc90004e17da8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1580 kernel/workqueue.c:2250 #2: ffff8881091aa218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:737 [inline] #2: ffff8881091aa218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4320 drivers/usb/core/hub.c:5537 1 lock held by in:imklog/4279: 2 locks held by agetty/4277: #0: ffff888110fb3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:266 #1: ffffc9000053b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x21d/0x1aa0 drivers/tty/n_tty.c:2155 2 locks held by agetty/4283: #0: ffff888110fb6098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:266 #1: ffffc9000056b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x21d/0x1aa0 drivers/tty/n_tty.c:2155 2 locks held by agetty/4288: #0: ffff888110fb2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:266 #1: ffffc9000052b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x21d/0x1aa0 drivers/tty/n_tty.c:2155 5 locks held by kworker/0:3/6732: #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888103fc2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1580 kernel/workqueue.c:2246 #1: ffffc90003f27da8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1580 kernel/workqueue.c:2250 #2: ffff8881090fa218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:737 [inline] #2: ffff8881090fa218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4320 drivers/usb/core/hub.c:5537 #3: ffff8881090fd570 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3030 [inline] #3: ffff8881090fd570 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5154 [inline] #3: ffff8881090fd570 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] #3: ffff8881090fd570 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5509 [inline] #3: ffff8881090fd570 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2178/0x4320 drivers/usb/core/hub.c:5591 #4: ffff888108fe3a68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b9/0x2e40 drivers/usb/core/hub.c:4582 3 locks held by kworker/0:6/7243: #0: ffff888100315d38 ((wq_completion)pm){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888100315d38 ((wq_completion)pm){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888100315d38 ((wq_completion)pm){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888100315d38 ((wq_completion)pm){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888100315d38 ((wq_completion)pm){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888100315d38 ((wq_completion)pm){+.+.}-{0:0}, at: process_one_work+0x871/0x1580 kernel/workqueue.c:2246 #1: ffffc90004cf7da8 ((work_completion)(&hcd->wakeup_work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1580 kernel/workqueue.c:2250 #2: ffff8881091da218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:737 [inline] #2: ffff8881091da218 (&dev->mutex){....}-{3:3}, at: usb_remote_wakeup+0x1f/0xe0 drivers/usb/core/hub.c:3643 2 locks held by systemd-udevd/22900: 1 lock held by systemd-udevd/22903: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1270 Comm: khungtaskd Not tainted 5.11.0-rc7-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+0x107/0x163 lib/dump_stack.c:120 nmi_cpu_backtrace.cold+0x46/0xe0 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1da/0x200 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+0xd32/0xf70 kernel/hung_task.c:294 kthread+0x38c/0x460 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 2640 Comm: systemd-journal Not tainted 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:cfs_se_util_change kernel/sched/pelt.h:62 [inline] RIP: 0010:__update_load_avg_se+0x3e6/0xf00 kernel/sched/pelt.c:316 Code: 00 00 00 fc ff df 80 3c 11 00 0f 85 b0 05 00 00 49 8d bc 24 b8 01 00 00 49 89 84 24 b0 01 00 00 48 b8 00 00 00 00 00 fc ff df <48> 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e f0 05 00 RSP: 0018:ffffc90000148b60 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: 000000000000b86b RCX: 1ffff11020d173a6 RDX: dffffc0000000000 RSI: 00000000efe4b99a RDI: ffff8881068b9d38 RBP: ffffc90000148bd8 R08: 0000000000000000 R09: 00000000000001de R10: ffff8881068b9d08 R11: 0000000000000000 R12: ffff8881068b9b80 R13: 000000000000b86b R14: 0000000000000c0f R15: 0000000000000003 FS: 00007f4e59e1a8c0(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000559e792dab18 CR3: 0000000100b0b000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: update_load_avg+0x113/0x19c0 kernel/sched/fair.c:3803 enqueue_entity kernel/sched/fair.c:4236 [inline] enqueue_task_fair+0x298/0x2850 kernel/sched/fair.c:5522 enqueue_task kernel/sched/core.c:1596 [inline] activate_task kernel/sched/core.c:1615 [inline] ttwu_do_activate+0x17b/0x4e0 kernel/sched/core.c:2993 ttwu_queue kernel/sched/core.c:3190 [inline] try_to_wake_up+0x469/0x10a0 kernel/sched/core.c:3468 hrtimer_wakeup+0x43/0x60 kernel/time/hrtimer.c:1773 __run_hrtimer kernel/time/hrtimer.c:1519 [inline] __hrtimer_run_queues+0x609/0xd80 kernel/time/hrtimer.c:1583 hrtimer_interrupt+0x300/0x8f0 kernel/time/hrtimer.c:1645 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline] __sysvec_apic_timer_interrupt+0xf5/0x420 arch/x86/kernel/apic/apic.c:1106 asm_call_irq_on_stack+0xf/0x20 __run_sysvec_on_irqstack arch/x86/include/asm/irq_stack.h:37 [inline] run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:89 [inline] sysvec_apic_timer_interrupt+0x7f/0xa0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:197 Code: 00 00 00 4d 8b 0b 48 0f bd c8 49 8b 14 24 48 63 c9 e9 66 ff ff ff 4c 01 ca 49 89 13 e9 12 fd ff ff 66 0f 1f 84 00 00 00 00 00 <65> 8b 05 79 51 c2 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b RSP: 0018:ffffc90000227c38 EFLAGS: 00000202 RAX: 0000000000a6abb9 RBX: 000000000000340e RCX: ffffffff81268657 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8129382c RBP: 0000000000003f95 R08: 0000000000000001 R09: ffffffff8a1c2657 R10: fffffbfff14384ca R11: 0000000000000000 R12: 0000000000000041 R13: 0000000000000000 R14: ffffffff81293710 R15: 0000000000000001 devkmsg_poll+0x122/0x1d0 kernel/printk/printk.c:832 vfs_poll include/linux/poll.h:90 [inline] ep_item_poll+0xf4/0x190 fs/eventpoll.c:840 ep_send_events fs/eventpoll.c:1677 [inline] ep_poll fs/eventpoll.c:1792 [inline] do_epoll_wait+0x724/0x1920 fs/eventpoll.c:2220 __do_sys_epoll_wait fs/eventpoll.c:2232 [inline] __se_sys_epoll_wait fs/eventpoll.c:2227 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2227 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f4e590e32e3 Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d 29 54 2b 00 00 75 13 49 89 ca b8 e8 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 0b c2 00 00 48 89 04 24 RSP: 002b:00007ffca6b93d78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 00005560e72d31e0 RCX: 00007f4e590e32e3 RDX: 0000000000000013 RSI: 00007ffca6b93d80 RDI: 0000000000000008 RBP: 00007ffca6b93f70 R08: 00005560e72df250 R09: 00007ffca6bae080 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffca6b93d80 R13: 0000000000000001 R14: 0000000000000000 R15: 0005bb03f6e57660