device veth1_macvtap left promiscuous mode device veth0_macvtap left promiscuous mode device veth1_vlan left promiscuous mode device veth0_vlan left promiscuous mode Bluetooth: hci0: command 0x0409 tx timeout INFO: task kworker/1:2:3628 blocked for more than 140 seconds. Not tainted 4.19.160-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:2 D26280 3628 2 0x80000000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 usb_kill_urb.part.0+0x197/0x220 drivers/usb/core/urb.c:697 usb_kill_urb+0x7c/0x90 drivers/usb/core/urb.c:692 usb_start_wait_urb+0x252/0x4c0 drivers/usb/core/message.c:63 usb_internal_control_msg drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:152 hub_port_init+0x12d9/0x2fa0 drivers/usb/core/hub.c:4654 hub_port_connect drivers/usb/core/hub.c:5020 [inline] hub_port_connect_change drivers/usb/core/hub.c:5203 [inline] port_event drivers/usb/core/hub.c:5311 [inline] hub_event+0x1cf8/0x43f0 drivers/usb/core/hub.c:5391 process_one_work+0x864/0x1570 kernel/workqueue.c:2155 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task kworker/1:5:4762 blocked for more than 140 seconds. Not tainted 4.19.160-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:5 D28312 4762 2 0x80000000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1072 hub_port_init+0x1b6/0x2fa0 drivers/usb/core/hub.c:4528 hub_port_connect drivers/usb/core/hub.c:5020 [inline] hub_port_connect_change drivers/usb/core/hub.c:5203 [inline] port_event drivers/usb/core/hub.c:5311 [inline] hub_event+0x1cf8/0x43f0 drivers/usb/core/hub.c:5391 process_one_work+0x864/0x1570 kernel/workqueue.c:2155 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Showing all locks held in the system: 1 lock held by khungtaskd/1567: #0: 000000008e4bea64 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440 5 locks held by kworker/1:2/3628: #0: 000000006a4b1ad4 ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 #1: 000000007af524ba ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130 #2: 00000000f0ea4887 (&dev->mutex){....}, at: device_lock include/linux/device.h:1173 [inline] #2: 00000000f0ea4887 (&dev->mutex){....}, at: hub_event+0x11b/0x43f0 drivers/usb/core/hub.c:5337 #3: 000000006a22dac8 (&port_dev->status_lock){+.+.}, at: usb_lock_port drivers/usb/core/hub.c:2977 [inline] #3: 000000006a22dac8 (&port_dev->status_lock){+.+.}, at: hub_port_connect drivers/usb/core/hub.c:5019 [inline] #3: 000000006a22dac8 (&port_dev->status_lock){+.+.}, at: hub_port_connect_change drivers/usb/core/hub.c:5203 [inline] #3: 000000006a22dac8 (&port_dev->status_lock){+.+.}, at: port_event drivers/usb/core/hub.c:5311 [inline] #3: 000000006a22dac8 (&port_dev->status_lock){+.+.}, at: hub_event+0x1ce3/0x43f0 drivers/usb/core/hub.c:5391 #4: 00000000d47c3c42 (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b6/0x2fa0 drivers/usb/core/hub.c:4528 1 lock held by in:imklog/7800: #0: 00000000d52fb8c8 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 3 locks held by kworker/0:3/8342: #0: 0000000040505772 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 #1: 00000000bd484817 ((linkwatch_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130 #2: 00000000af0603ab (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:236 5 locks held by kworker/u4:1/8381: 3 locks held by kworker/1:4/437: #0: 0000000040505772 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 #1: 000000003daf906f (deferred_process_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130 #2: 00000000af0603ab (rtnl_mutex){+.+.}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 5 locks held by kworker/1:5/4762: #0: 000000006a4b1ad4 ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 #1: 000000006a1c2be7 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130 #2: 00000000c4f4cb47 (&dev->mutex){....}, at: device_lock include/linux/device.h:1173 [inline] #2: 00000000c4f4cb47 (&dev->mutex){....}, at: hub_event+0x11b/0x43f0 drivers/usb/core/hub.c:5337 #3: 00000000020dd397 (&port_dev->status_lock){+.+.}, at: usb_lock_port drivers/usb/core/hub.c:2977 [inline] #3: 00000000020dd397 (&port_dev->status_lock){+.+.}, at: hub_port_connect drivers/usb/core/hub.c:5019 [inline] #3: 00000000020dd397 (&port_dev->status_lock){+.+.}, at: hub_port_connect_change drivers/usb/core/hub.c:5203 [inline] #3: 00000000020dd397 (&port_dev->status_lock){+.+.}, at: port_event drivers/usb/core/hub.c:5311 [inline] #3: 00000000020dd397 (&port_dev->status_lock){+.+.}, at: hub_event+0x1ce3/0x43f0 drivers/usb/core/hub.c:5391 #4: 00000000d47c3c42 (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b6/0x2fa0 drivers/usb/core/hub.c:4528 1 lock held by syz-executor.0/13339: #0: 00000000af0603ab (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 00000000af0603ab (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4775 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1567 Comm: khungtaskd Not tainted 4.19.160-syzkaller #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+0x1fc/0x2fe lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 8381 Comm: kworker/u4:1 Not tainted 4.19.160-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:mark_irqflags kernel/locking/lockdep.c:3026 [inline] RIP: 0010:__lock_acquire+0x64e/0x3ff0 kernel/locking/lockdep.c:3372 Code: 89 4c 24 28 eb 6e ba 02 00 00 00 4c 89 d6 4c 89 ef 4c 89 54 24 20 e8 71 e7 ff ff 85 c0 0f 84 3f fb ff ff 49 8d bd 70 08 00 00 <4c> 8b 54 24 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 44 8b 4c 24 RSP: 0018:ffff8880ab53f4b0 EFLAGS: 00000002 RAX: 0000000000000001 RBX: 0000000000000003 RCX: 1ffff11013b61d31 RDX: 1ffffffff19b3e02 RSI: ffff88809db0e968 RDI: ffff88809db0e8b0 RBP: ffff88809db0e98a R08: 0000000000000383 R09: 0000000000000004 R10: ffff88809db0e968 R11: 0000000000000000 R12: 0000000000040383 R13: ffff88809db0e040 R14: ffff88809db0e980 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f40113d9d30 CR3: 000000008f669000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3907 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] nf_conntrack_lock net/netfilter/nf_conntrack_core.c:96 [inline] get_next_corpse net/netfilter/nf_conntrack_core.c:1917 [inline] nf_ct_iterate_cleanup+0x1dc/0x520 net/netfilter/nf_conntrack_core.c:1951 nf_ct_iterate_cleanup_net net/netfilter/nf_conntrack_core.c:2036 [inline] nf_ct_iterate_cleanup_net+0x113/0x170 net/netfilter/nf_conntrack_core.c:2021 masq_device_event+0xd6/0x110 net/ipv4/netfilter/nf_nat_masquerade_ipv4.c:100 notifier_call_chain+0xc0/0x230 kernel/notifier.c:93 call_netdevice_notifiers net/core/dev.c:1762 [inline] dev_close_many+0x323/0x670 net/core/dev.c:1514 rollback_registered_many+0x2f7/0xe70 net/core/dev.c:8165 unregister_netdevice_many.part.0+0x1a/0x300 net/core/dev.c:9311 unregister_netdevice_many net/core/dev.c:9310 [inline] default_device_exit_batch+0x2fa/0x3c0 net/core/dev.c:9782 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:156 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:553 process_one_work+0x864/0x1570 kernel/workqueue.c:2155 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415