INFO: task kworker/0:0:8 blocked for more than 143 seconds. Not tainted 6.6.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:23216 pid:8 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5382 [inline] __schedule+0xc79/0x30a0 kernel/sched/core.c:6695 schedule+0xe7/0x1b0 kernel/sched/core.c:6771 schedule_timeout+0x27a/0x2c0 kernel/time/timer.c:2143 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common+0x3e2/0x5f0 kernel/sched/completion.c:116 r871xu_dev_remove+0x8a/0x480 drivers/staging/rtl8712/usb_intf.c:594 usb_unbind_interface+0x1dd/0x8d0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:569 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:561 __device_release_driver drivers/base/dd.c:1272 [inline] device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1295 bus_remove_device+0x22c/0x420 drivers/base/bus.c:574 device_del+0x39a/0xa50 drivers/base/core.c:3811 usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1416 usb_disconnect+0x2e1/0x890 drivers/usb/core/hub.c:2252 hub_port_connect drivers/usb/core/hub.c:5280 [inline] hub_port_connect_change drivers/usb/core/hub.c:5580 [inline] port_event drivers/usb/core/hub.c:5740 [inline] hub_event+0x1be0/0x4f30 drivers/usb/core/hub.c:5822 process_one_work+0x887/0x15d0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784 kthread+0x33a/0x430 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 INFO: task kworker/1:3:5274 blocked for more than 143 seconds. Not tainted 6.6.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:3 state:D stack:22320 pid:5274 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5382 [inline] __schedule+0xc79/0x30a0 kernel/sched/core.c:6695 schedule+0xe7/0x1b0 kernel/sched/core.c:6771 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747 unregister_netdev+0x12/0x30 net/core/dev.c:11011 r871xu_dev_remove+0x28e/0x480 drivers/staging/rtl8712/usb_intf.c:596 usb_unbind_interface+0x1dd/0x8d0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:569 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:561 __device_release_driver drivers/base/dd.c:1272 [inline] device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1295 bus_remove_device+0x22c/0x420 drivers/base/bus.c:574 device_del+0x39a/0xa50 drivers/base/core.c:3811 usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1416 usb_disconnect+0x2e1/0x890 drivers/usb/core/hub.c:2252 hub_port_connect drivers/usb/core/hub.c:5280 [inline] hub_port_connect_change drivers/usb/core/hub.c:5580 [inline] port_event drivers/usb/core/hub.c:5740 [inline] hub_event+0x1be0/0x4f30 drivers/usb/core/hub.c:5822 process_one_work+0x887/0x15d0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784 kthread+0x33a/0x430 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Showing all locks held in the system: 5 locks held by kworker/0:0/8: #0: ffff88810b264538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x774/0x15d0 kernel/workqueue.c:2602 #1: ffffc9000008fd88 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7a7/0x15d0 kernel/workqueue.c:2605 #2: ffff888105ff5190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #2: ffff888105ff5190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f30 drivers/usb/core/hub.c:5768 #3: ffff888111c91190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #3: ffff888111c91190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x890 drivers/usb/core/hub.c:2243 #4: ffff88810af8e160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #4: ffff88810af8e160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline] #4: ffff88810af8e160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292 3 locks held by kworker/1:0/22: #0: ffff8881097ef938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x774/0x15d0 kernel/workqueue.c:2602 #1: ffffc9000017fd88 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7a7/0x15d0 kernel/workqueue.c:2605 #2: ffffffff88fae7e8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4667 1 lock held by khungtaskd/29: #0: ffffffff87eac820 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6607 2 locks held by dhcpcd/2425: #0: ffffffff88fae7e8 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x1d3/0x1f00 net/ipv4/devinet.c:1091 #1: ffff88812b55cdb0 (&padapter->mutex_start){+.+.}-{3:3}, at: netdev_open+0x32/0x820 drivers/staging/rtl8712/os_intfs.c:392 2 locks held by getty/2445: #0: ffff88810b7390a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc900000432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc5/0x1480 drivers/tty/n_tty.c:2206 1 lock held by syz-executor.0/2505: #0: ffff8881f673b518 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:558 [inline] #0: ffff8881f673b518 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1372 [inline] #0: ffff8881f673b518 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1681 [inline] #0: ffff8881f673b518 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x290/0x30a0 kernel/sched/core.c:6612 6 locks held by kworker/1:3/5274: #0: ffff88810b264538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x774/0x15d0 kernel/workqueue.c:2602 #1: ffffc9000255fd88 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7a7/0x15d0 kernel/workqueue.c:2605 #2: ffff888106345190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #2: ffff888106345190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f30 drivers/usb/core/hub.c:5768 #3: ffff8881183b5190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #3: ffff8881183b5190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x890 drivers/usb/core/hub.c:2243 #4: ffff88811264f160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #4: ffff88811264f160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline] #4: ffff88811264f160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292 #5: ffffffff88fae7e8 (rtnl_mutex){+.+.}-{3:3}, at: unregister_netdev+0x12/0x30 net/core/dev.c:11011 3 locks held by kworker/1:4/5298: #0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x774/0x15d0 kernel/workqueue.c:2602 #1: ffffc90002e8fd88 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7a7/0x15d0 kernel/workqueue.c:2605 #2: ffffffff88fae7e8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10264 2 locks held by kworker/0:4/5309: 3 locks held by kworker/0:5/5310: #0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x774/0x15d0 kernel/workqueue.c:2602 #1: ffffc90002edfd88 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7a7/0x15d0 kernel/workqueue.c:2605 #2: ffffffff88fae7e8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10264 3 locks held by kworker/1:5/5342: #0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x774/0x15d0 kernel/workqueue.c:2602 #1: ffffc900025cfd88 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7a7/0x15d0 kernel/workqueue.c:2605 #2: ffffffff88fae7e8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10264 6 locks held by kworker/1:6/5376: #0: ffff88810b264538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x774/0x15d0 kernel/workqueue.c:2602 #1: ffffc9000257fd88 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7a7/0x15d0 kernel/workqueue.c:2605 #2: ffff888105fcd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #2: ffff888105fcd190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f30 drivers/usb/core/hub.c:5768 #3: ffff8881185cd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #3: ffff8881185cd190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005 #4: ffff88813b3d7160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #4: ffff88813b3d7160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005 #5: ffffffff88fae7e8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10264 6 locks held by kworker/1:7/5379: #0: ffff88810b264538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x774/0x15d0 kernel/workqueue.c:2602 #1: ffffc90002f47d88 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7a7/0x15d0 kernel/workqueue.c:2605 #2: ffff888105f05190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline] #2: ffff888105f05190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f30 drivers/usb/core/hub.c:5768 #3: ffff888105fc8500 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3138 [inline] #3: ffff888105fc8500 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5337 [inline] #3: ffff888105fc8500 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5580 [inline] #3: ffff888105fc8500 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5740 [inline] #3: ffff888105fc8500 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x28b4/0x4f30 drivers/usb/core/hub.c:5822 #4: ffff888105f1a068 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5338 [inline] #4: ffff888105f1a068 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5580 [inline] #4: ffff888105f1a068 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5740 [inline] #4: ffff888105f1a068 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x28da/0x4f30 drivers/usb/core/hub.c:5822 #5: ffffffff888e06b0 (ehci_cf_port_reset_rwsem){.+.+}-{3:3}, at: hub_port_reset+0x1a4/0x1dc0 drivers/usb/core/hub.c:2953 4 locks held by udevd/11923: #0: ffff888107fefb08 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xda/0x1280 fs/seq_file.c:182 #1: ffff8881026f6888 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4b/0x460 fs/kernfs/file.c:154 #2: ffff8881116ae0f0 (kn->active#25){++++}-{0:0}, at: kernfs_seq_start+0x6f/0x460 fs/kernfs/file.c:155 #3: ffff8881183b5190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:997 [inline] #3: ffff8881183b5190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142 3 locks held by kworker/1:1/11932: #0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x774/0x15d0 kernel/workqueue.c:2602 #1: ffffc900016afd88 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7a7/0x15d0 kernel/workqueue.c:2605 #2: ffffffff88fae7e8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x13/0x50 net/core/dev.c:10264 4 locks held by udevd/11933: #0: ffff88810a3470a0 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xda/0x1280 fs/seq_file.c:182 #1: ffff888102fbec88 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4b/0x460 fs/kernfs/file.c:154 #2: ffff88811790c660 (kn->active#28){++++}-{0:0}, at: kernfs_seq_start+0x6f/0x460 fs/kernfs/file.c:155 #3: ffff8881185cd190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:997 [inline] #3: ffff8881185cd190 (&dev->mutex){....}-{3:3}, at: serial_show+0x26/0xa0 drivers/usb/core/sysfs.c:143 3 locks held by kworker/0:3/13115: #0: ffff8881097ef938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x774/0x15d0 kernel/workqueue.c:2602 #1: ffffc9000b8cfd88 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7a7/0x15d0 kernel/workqueue.c:2605 #2: ffffffff88fae7e8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4667 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x26c/0x2d0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xfac/0x1230 kernel/hung_task.c:379 kthread+0x33a/0x430 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5379 Comm: kworker/1:7 Not tainted 6.6.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Workqueue: usb_hub_wq hub_event RIP: 0010:visit_lock_entry kernel/locking/lockdep.c:1520 [inline] RIP: 0010:__bfs+0x3dc/0x660 kernel/locking/lockdep.c:1800 Code: 60 d7 da 8a 73 2e 89 05 f2 6e ad 09 eb 26 48 8b 1b 4c 39 cb 0f 84 51 fe ff ff 48 8d 7b 30 48 89 f8 48 c1 e8 03 42 80 3c 30 00 <0f> 85 f1 00 00 00 4c 89 7b 30 48 89 d8 48 c1 e8 03 42 80 3c 30 00 RSP: 0018:ffffc90000197ba0 EFLAGS: 00000046 RAX: 1ffffffff172438f RBX: ffffffff8b921c48 RCX: 1ffffffff15b5aed RDX: 0000000000000154 RSI: 1ffffffff15b5af3 RDI: ffffffff8b921c78 RBP: ffffffff8b90a488 R08: 0000000000000000 R09: ffffffff8b724fa0 R10: 0000000000000002 R11: 0000000000000007 R12: ffffffff812d3610 R13: ffffffff8b90a4a8 R14: dffffc0000000000 R15: ffffffff8b90a478 FS: 0000000000000000(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa3aeef0070 CR3: 000000011cc97000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __bfs_backwards kernel/locking/lockdep.c:1844 [inline] check_irq_usage+0x1d5/0x1c70 kernel/locking/lockdep.c:2804 check_prev_add kernel/locking/lockdep.c:3138 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3868 [inline] __lock_acquire+0x2e53/0x5de0 kernel/locking/lockdep.c:5136 lock_acquire kernel/locking/lockdep.c:5753 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5718 seqcount_lockdep_reader_access include/linux/seqlock.h:102 [inline] read_mems_allowed_begin include/linux/cpuset.h:146 [inline] get_any_partial mm/slub.c:2366 [inline] get_partial mm/slub.c:2408 [inline] ___slab_alloc+0x1120/0x1570 mm/slub.c:3218 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322 __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc+0x355/0x370 mm/slub.c:3502 skb_clone+0x171/0x3c0 net/core/skbuff.c:1911 dev_queue_xmit_nit+0x38b/0xb90 net/core/dev.c:2284 xmit_one net/core/dev.c:3540 [inline] dev_hard_start_xmit+0x59/0x6c0 net/core/dev.c:3560 sch_direct_xmit+0x18e/0x830 net/sched/sch_generic.c:342 __dev_xmit_skb net/core/dev.c:3771 [inline] __dev_queue_xmit+0x127c/0x3d80 net/core/dev.c:4306 dev_queue_xmit include/linux/netdevice.h:3082 [inline] neigh_hh_output include/net/neighbour.h:526 [inline] neigh_output include/net/neighbour.h:540 [inline] ip_finish_output2+0x16ea/0x24a0 net/ipv4/ip_output.c:233 __ip_finish_output.part.0+0x594/0xd60 net/ipv4/ip_output.c:311 __ip_finish_output net/ipv4/ip_output.c:299 [inline] ip_finish_output net/ipv4/ip_output.c:321 [inline] NF_HOOK_COND include/linux/netfilter.h:293 [inline] ip_output+0x2d4/0x900 net/ipv4/ip_output.c:431 dst_output include/net/dst.h:458 [inline] ip_local_out net/ipv4/ip_output.c:127 [inline] __ip_queue_xmit+0xa40/0x1e20 net/ipv4/ip_output.c:533 __tcp_transmit_skb+0x1a30/0x3980 net/ipv4/tcp_output.c:1416 tcp_transmit_skb net/ipv4/tcp_output.c:1434 [inline] tcp_write_xmit+0xf25/0x6a30 net/ipv4/tcp_output.c:2750 tcp_send_loss_probe+0x528/0x7a0 net/ipv4/tcp_output.c:2872 tcp_write_timer_handler net/ipv4/tcp_timer.c:664 [inline] tcp_write_timer_handler+0x578/0xa00 net/ipv4/tcp_timer.c:642 tcp_write_timer+0xa6/0x2b0 net/ipv4/tcp_timer.c:685 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x764/0xb10 kernel/time/timer.c:2022 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035 __do_softirq+0x20b/0x94e kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xa7/0x110 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x8e/0xb0 arch/x86/kernel/apic/apic.c:1074 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1972 [inline] RIP: 0010:vprintk_emit+0x3d1/0x630 kernel/printk/printk.c:2306 Code: 00 00 e8 c2 1b 1c 00 9c 8f 45 d0 48 8b 45 d0 31 ff 25 00 02 00 00 49 89 c7 48 89 c6 e8 38 17 1c 00 4d 85 ff 0f 85 09 02 00 00 0f 1e fa e8 96 1b 1c 00 45 31 c9 41 b8 01 00 00 00 31 c9 68 c1 RSP: 0018:ffffc90002f476f8 EFLAGS: 00000246 RAX: 0000000000040000 RBX: 000000000000004d RCX: ffffc9000c8df000 RDX: 0000000000040000 RSI: ffffffff813156c4 RDI: 0000000000000007 RBP: ffffc90002f47730 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000200 R13: ffff888107640000 R14: 0000000000000000 R15: 0000000000000000 dev_vprintk_emit drivers/base/core.c:4847 [inline] dev_printk_emit+0xfb/0x140 drivers/base/core.c:4858 __dev_printk+0xf5/0x270 drivers/base/core.c:4870 _dev_info+0xe5/0x120 drivers/base/core.c:4916 announce_device drivers/usb/core/hub.c:2310 [inline] usb_new_device+0x84b/0x1960 drivers/usb/core/hub.c:2570 hub_port_connect drivers/usb/core/hub.c:5440 [inline] hub_port_connect_change drivers/usb/core/hub.c:5580 [inline] port_event drivers/usb/core/hub.c:5740 [inline] hub_event+0x2e62/0x4f30 drivers/usb/core/hub.c:5822 process_one_work+0x887/0x15d0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784 kthread+0x33a/0x430 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304