device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_0 left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state INFO: task kworker/1:0:31283 blocked for more than 140 seconds. Not tainted 4.14.150 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:0 D27584 31283 2 0x80000000 Workqueue: events linkwatch_event Call Trace: context_switch kernel/sched/core.c:2807 [inline] __schedule+0x7b8/0x1cd0 kernel/sched/core.c:3383 schedule+0x92/0x1c0 kernel/sched/core.c:3427 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3485 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 linkwatch_event+0xe/0x60 net/core/link_watch.c:236 process_one_work+0x863/0x1600 kernel/workqueue.c:2114 worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248 kthread+0x319/0x430 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 INFO: task kworker/1:2:21571 blocked for more than 140 seconds. Not tainted 4.14.150 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'rx-0' (ffff8881ef9a5910): kobject_cleanup, parent ffff8881f59c1448 kworker/1:2 D29568 21571 2 0x80000000 Workqueue: events switchdev_deferred_process_work kobject: 'rx-0' (ffff8881ef9a5910): auto cleanup 'remove' event Call Trace: kobject: 'rx-0' (ffff8881ef9a5910): kobject_uevent_env context_switch kernel/sched/core.c:2807 [inline] __schedule+0x7b8/0x1cd0 kernel/sched/core.c:3383 kobject: 'rx-0' (ffff8881ef9a5910): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'rx-0' (ffff8881ef9a5910): auto cleanup kobject_del schedule+0x92/0x1c0 kernel/sched/core.c:3427 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3485 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893 kobject: 'rx-0' (ffff8881ef9a5910): calling ktype release kobject: 'rx-0': free name mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 kobject: 'tx-0' (ffff88801654cad8): kobject_cleanup, parent ffff8881f59c1448 kobject: 'tx-0' (ffff88801654cad8): auto cleanup 'remove' event rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:150 process_one_work+0x863/0x1600 kernel/workqueue.c:2114 worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248 kthread+0x319/0x430 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 kobject: 'tx-0' (ffff88801654cad8): kobject_uevent_env INFO: task syz-executor.4:25978 blocked for more than 140 seconds. kobject: 'tx-0' (ffff88801654cad8): kobject_uevent_env: uevent_suppress caused the event to drop! Not tainted 4.14.150 #0 kobject: 'tx-0' (ffff88801654cad8): auto cleanup kobject_del "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'tx-0' (ffff88801654cad8): calling ktype release syz-executor.4 D28448 25978 1 0x00000004 Call Trace: kobject: 'tx-0': free name context_switch kernel/sched/core.c:2807 [inline] __schedule+0x7b8/0x1cd0 kernel/sched/core.c:3383 kobject: 'queues' (ffff8881f59c1448): kobject_cleanup, parent (null) kobject: 'queues' (ffff8881f59c1448): calling ktype release schedule+0x92/0x1c0 kernel/sched/core.c:3427 kobject: 'queues' (ffff8881f59c1448): kset_release schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3485 kobject: 'queues': free name __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893 kobject: 'bridge2160' (ffff8881fff3d470): kobject_uevent_env kobject: 'bridge2160' (ffff8881fff3d470): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'batman_adv' (ffff88803a410f00): kobject_uevent_env kobject: 'batman_adv' (ffff88803a410f00): kobject_uevent_env: filter function caused the event to drop! kobject: 'batman_adv' (ffff88803a410f00): kobject_cleanup, parent (null) mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 kobject: 'batman_adv' (ffff88803a410f00): calling ktype release kobject: (ffff88803a410f00): dynamic_kobj_release rtnl_lock net/core/rtnetlink.c:72 [inline] rtnetlink_rcv_msg+0x33a/0xb70 net/core/rtnetlink.c:4280 kobject: 'batman_adv': free name netlink_rcv_skb+0x14f/0x3c0 net/netlink/af_netlink.c:2432 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4297 netlink_unicast_kernel net/netlink/af_netlink.c:1286 [inline] netlink_unicast+0x45d/0x640 net/netlink/af_netlink.c:1312 netlink_sendmsg+0x7c4/0xc60 net/netlink/af_netlink.c:1877 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xce/0x110 net/socket.c:656 SYSC_sendto+0x206/0x310 net/socket.c:1763 SyS_sendto+0x40/0x50 net/socket.c:1731 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x413c33 RSP: 002b:00007fff2629ab78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000413c33 RDX: 0000000000000028 RSI: 0000000000a71df0 RDI: 0000000000000003 RBP: 00007fff2629abe0 R08: 00007fff2629ab80 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 00007fff2629aee8 R14: 0000000000000000 R15: 0000000000000000 Showing all locks held in the system: 3 locks held by kworker/1:1/23: #0: ("%s"("ipv6_addrconf")){+.+.}, at: [] work_static include/linux/workqueue.h:199 [inline] #0: ("%s"("ipv6_addrconf")){+.+.}, at: [] set_work_data kernel/workqueue.c:619 [inline] #0: ("%s"("ipv6_addrconf")){+.+.}, at: [] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline] #0: ("%s"("ipv6_addrconf")){+.+.}, at: [] process_one_work+0x76e/0x1600 kernel/workqueue.c:2085 #1: ((addr_chk_work).work){+.+.}, at: [] process_one_work+0x7ab/0x1600 kernel/workqueue.c:2089 #2: (rtnl_mutex){+.+.}, at: [] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 1 lock held by khungtaskd/1016: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4544 1 lock held by rsyslogd/6660: kobject: 'rx-0' (ffff8881f5082f10): kobject_cleanup, parent ffff8881fa3a2948 #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0xab/0xd0 fs/file.c:769 2 locks held by getty/6782: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6783: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: kobject: 'rx-0' (ffff8881f5082f10): auto cleanup 'remove' event ( kobject: 'rx-0' (ffff8881f5082f10): kobject_uevent_env &ldata->atomic_read_lock kobject: 'rx-0' (ffff8881f5082f10): kobject_uevent_env: uevent_suppress caused the event to drop! ){+.+.} kobject: 'rx-0' (ffff8881f5082f10): auto cleanup kobject_del , at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6784: kobject: 'rx-0' (ffff8881f5082f10): calling ktype release #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: kobject: 'rx-0': free name (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6785: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6786: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6787: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/6788: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 3 locks held by kworker/1:0/31283: #0: ("events"){+.+.}, at: [] work_static include/linux/workqueue.h:199 [inline] #0: ("events"){+.+.}, at: [] set_work_data kernel/workqueue.c:619 [inline] #0: ("events"){+.+.}, at: [] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline] #0: ("events"){+.+.}, at: [] process_one_work+0x76e/0x1600 kernel/workqueue.c:2085 #1: ((linkwatch_work).work){+.+.}, at: [] process_one_work+0x7ab/0x1600 kernel/workqueue.c:2089 #2: (rtnl_mutex){+.+.}, at: [] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 3 locks held by kworker/1:2/21571: #0: ("events"){+.+.}, at: [] work_static include/linux/workqueue.h:199 [inline] #0: ("events"){+.+.}, at: [] set_work_data kernel/workqueue.c:619 [inline] #0: ("events"){+.+.}, at: [] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline] #0: ("events"){+.+.}, at: [] process_one_work+0x76e/0x1600 kernel/workqueue.c:2085 #1: (deferred_process_work){+.+.}, at: [] process_one_work+0x7ab/0x1600 kernel/workqueue.c:2089 #2: (rtnl_mutex){+.+.}, at: [] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 1 lock held by syz-executor.4/25978: #0: kobject: 'tx-0' (ffff888039684ad8): kobject_cleanup, parent ffff8881fa3a2948 (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x33a/0xb70 net/core/rtnetlink.c:4280 kobject: 'tx-0' (ffff888039684ad8): auto cleanup 'remove' event ============================================= NMI backtrace for cpu 0 kobject: 'tx-0' (ffff888039684ad8): kobject_uevent_env CPU: 0 PID: 1016 Comm: khungtaskd Not tainted 4.14.150 #0 kobject: 'tx-0' (ffff888039684ad8): kobject_uevent_env: uevent_suppress caused the event to drop! Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x197 lib/dump_stack.c:53 nmi_cpu_backtrace.cold+0x57/0x94 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x141/0x189 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x5e7/0xb90 kernel/hung_task.c:274 kthread+0x319/0x430 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 17662 Comm: kworker/u4:4 Not tainted 4.14.150 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net task: ffff8881a22865c0 task.stack: ffff88819d588000 RIP: 0010:queued_spin_lock include/asm-generic/qspinlock.h:88 [inline] RIP: 0010:do_raw_spin_lock+0xc8/0x230 kernel/locking/spinlock_debug.c:113 RSP: 0018:ffff8880aef07cd0 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 000000000006be00 RCX: 00000000425b018d RDX: 0000000000000001 RSI: ffff8881a2286ee0 RDI: ffffffff892c27ac RBP: ffff8880aef07cf8 R08: 000000000000141d R09: ffffffff88c8b5a8 R10: ffff8881a2286ee0 R11: ffff8881a22865c0 R12: ffffffff892c27a8 R13: ffffffff892c27b0 R14: ffffffff892c27b8 R15: ffffffff892c27a8 FS: 0000000000000000(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001054280 CR3: 00000000a8ffe000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:117 [inline] _raw_spin_lock_irqsave+0x9d/0xcd kernel/locking/spinlock.c:160 debug_object_active_state lib/debugobjects.c:687 [inline] debug_object_active_state+0xec/0x370 lib/debugobjects.c:675 debug_rcu_head_unqueue kernel/rcu/rcu.h:161 [inline] rcu_do_batch kernel/rcu/tree.c:2698 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline] rcu_process_callbacks+0x872/0x12b0 kernel/rcu/tree.c:2946 __do_softirq+0x244/0x9a0 kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x160/0x1b0 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:648 [inline] smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102 apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1679 [inline] RIP: 0010:vprintk_emit kernel/printk/printk.c:1916 [inline] RIP: 0010:vprintk_emit+0x524/0x600 kernel/printk/printk.c:1882 RSP: 0018:ffff88819d58f778 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff10 RAX: ffff8881a22865c0 RBX: 1ffffffff0ee2a81 RCX: 1ffff11034450ddb RDX: 0000000000000000 RSI: ffff8881a2286eb8 RDI: 0000000000000297 RBP: ffff88819d58f7b8 R08: ffff8881a22865c0 R09: ffff8881a2286ed8 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000061 R13: 0000000000000297 R14: ffff8880a86006c0 R15: 0000000000000000 vprintk_default+0x28/0x30 kernel/printk/printk.c:1957 vprintk_func+0x5d/0x159 kernel/printk/printk_safe.c:401 printk+0x9e/0xbc kernel/printk/printk.c:1990 kobject_uevent_env+0x1df/0xc23 lib/kobject_uevent.c:370 kobject_uevent+0x20/0x26 lib/kobject_uevent.c:553 kobject_cleanup lib/kobject.c:633 [inline] kobject_release lib/kobject.c:675 [inline] kref_put include/linux/kref.h:70 [inline] kobject_put.cold+0x168/0x2f9 lib/kobject.c:692 netdev_queue_update_kobjects+0x1fa/0x360 net/core/net-sysfs.c:1370 remove_queue_kobjects net/core/net-sysfs.c:1423 [inline] netdev_unregister_kobject+0x148/0x1d0 net/core/net-sysfs.c:1561 rollback_registered_many+0x694/0xb60 net/core/dev.c:7237 unregister_netdevice_many.part.0+0x1b/0x1e0 net/core/dev.c:8267 unregister_netdevice_many net/core/dev.c:8266 [inline] default_device_exit_batch+0x31e/0x3d0 net/core/dev.c:8728 ops_exit_list.isra.0+0xfc/0x150 net/core/net_namespace.c:145 cleanup_net+0x3ba/0x880 net/core/net_namespace.c:484 process_one_work+0x863/0x1600 kernel/workqueue.c:2114 worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248 kthread+0x319/0x430 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: 84 c0 74 08 3c 03 0f 8e 30 01 00 00 65 8b 05 d0 72 b8 7e 41 39 44 24 08 0f 84 81 00 00 00 31 c0 ba 01 00 00 00 f0 41 0f b1 14 24 <85> c0 0f 85 8d 00 00 00 65 8b 1d a9 72 b8 7e 48 b8 00 00 00 00