[ 10.575404][ T214] ns3br1: port 1(ns3eth1) entered blocking state [ 10.575419][ T214] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 10.575421][ T214] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 214, name: ip [ 10.575423][ T214] preempt_count: 1, expected: 0 [ 10.575423][ T214] RCU nest depth: 0, expected: 0 [ 10.575424][ T214] INFO: lockdep is turned off. [ 10.575426][ T214] irq event stamp: 0 [ 10.575426][ T214] hardirqs last enabled at (0): [<0000000000000000>] 0x0 [ 10.575432][ T214] hardirqs last disabled at (0): [] copy_process+0x1ccd/0x6240 [ 10.575438][ T214] softirqs last enabled at (0): [] copy_process+0x1d21/0x6240 [ 10.575439][ T214] softirqs last disabled at (0): [<0000000000000000>] 0x0 [ 10.575441][ T214] Preemption disabled at: [ 10.575442][ T214] [] vprintk_emit+0x31b/0x3e0 [ 10.575450][ T214] CPU: 3 UID: 0 PID: 214 Comm: ip Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 10.575453][ T214] Tainted: [W]=WARN [ 10.575454][ T214] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.575456][ T214] Call Trace: [ 10.575458][ T214] [ 10.575459][ T214] dump_stack_lvl+0x6f/0xa0 [ 10.575464][ T214] ? vprintk_emit+0x31b/0x3e0 [ 10.575466][ T214] __might_resched.cold+0x1fe/0x2c1 [ 10.575470][ T214] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 10.575473][ T214] ? lock_acquire+0x13c/0x160 [ 10.575476][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575479][ T214] __kmalloc_noprof+0x443/0x760 [ 10.575483][ T214] ? __rwlock_init+0x150/0x150 [ 10.575485][ T214] ? alloc_buf.isra.0+0x4b/0x260 [ 10.575489][ T214] ? do_raw_spin_unlock+0x59/0x250 [ 10.575491][ T214] alloc_buf.isra.0+0x4b/0x260 [ 10.575492][ T214] put_chars+0x1e1/0x2f0 [ 10.575495][ T214] ? __send_to_port+0x420/0x420 [ 10.575496][ T214] ? printk_get_next_message+0x240/0x650 [ 10.575499][ T214] hvc_console_print+0x292/0x780 [ 10.575502][ T214] ? hvc_write+0x3a0/0x3a0 [ 10.575504][ T214] ? __rwlock_init+0x150/0x150 [ 10.575505][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575507][ T214] ? lock_acquire+0x13c/0x160 [ 10.575509][ T214] console_emit_next_record+0x22f/0x4c0 [ 10.575511][ T214] ? devkmsg_read+0x4b0/0x4b0 [ 10.575513][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575515][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575516][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575518][ T214] ? lock_acquire+0x13c/0x160 [ 10.575520][ T214] ? console_flush_one_record+0x111/0x710 [ 10.575522][ T214] console_flush_one_record+0x46f/0x710 [ 10.575524][ T214] ? console_emit_next_record+0x4c0/0x4c0 [ 10.575526][ T214] console_unlock+0xee/0x1f0 [ 10.575528][ T214] ? lock_acquire+0x13c/0x160 [ 10.575529][ T214] ? console_flush_one_record+0x710/0x710 [ 10.575531][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575533][ T214] ? lock_release+0x184/0x1f0 [ 10.575534][ T214] ? lock_acquire+0x60/0x160 [ 10.575536][ T214] ? __rcu_read_lock+0x30/0x70 [ 10.575538][ T214] ? __down_trylock_console_sem+0x5e/0xa0 [ 10.575539][ T214] ? vprintk_emit+0x320/0x3e0 [ 10.575542][ T214] vprintk_emit+0x37c/0x3e0 [ 10.575544][ T214] ? wake_up_klogd_work_func+0x90/0x90 [ 10.575546][ T214] ? __rwlock_init+0x150/0x150 [ 10.575547][ T214] ? _raw_spin_unlock_irqrestore+0x40/0x80 [ 10.575551][ T214] ? lock_acquire+0x13c/0x160 [ 10.575552][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575554][ T214] _printk+0xc7/0x100 [ 10.575557][ T214] ? snapshot_read.cold+0x21/0x21 [ 10.575559][ T214] ? br_multicast_flood+0x960/0x960 [ 10.575562][ T214] ? do_setlink.isra.0+0xa31/0x2750 [ 10.575565][ T214] ? rtnl_newlink+0x9f1/0x11c0 [ 10.575566][ T214] ? rtnetlink_rcv_msg+0x6fd/0xbd0 [ 10.575568][ T214] br_set_state+0x22f/0x410 [ 10.575570][ T214] br_init_port+0xc4/0x200 [ 10.575572][ T214] new_nbp+0x39c/0x580 [ 10.575574][ T214] br_add_if+0x212/0x1360 [ 10.575575][ T214] ? kernel_text_address+0x149/0x170 [ 10.575578][ T214] ? __kernel_text_address+0x12/0x30 [ 10.575580][ T214] do_set_master+0x357/0x580 [ 10.575581][ T214] ? netif_change_flags+0xfe/0x190 [ 10.575583][ T214] do_setlink.isra.0+0xa31/0x2750 [ 10.575585][ T214] ? stack_trace_save+0x93/0xc0 [ 10.575588][ T214] ? rtnl_link_get_size+0x350/0x350 [ 10.575589][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575590][ T214] ? stack_depot_save_flags+0x1bc/0x790 [ 10.575595][ T214] ? kasan_save_stack+0x3d/0x50 [ 10.575598][ T214] ? kasan_save_stack+0x2f/0x50 [ 10.575599][ T214] ? kasan_save_track+0x14/0x30 [ 10.575600][ T214] ? __kasan_kmalloc+0x7b/0x90 [ 10.575602][ T214] ? __kmalloc_cache_noprof+0x29a/0x620 [ 10.575603][ T214] ? rtnl_newlink+0x124/0x11c0 [ 10.575604][ T214] ? rtnetlink_rcv_msg+0x6fd/0xbd0 [ 10.575606][ T214] ? netlink_rcv_skb+0x14e/0x3a0 [ 10.575609][ T214] ? netlink_unicast+0x486/0x750 [ 10.575610][ T214] ? netlink_sendmsg+0x735/0xc60 [ 10.575612][ T214] ? ____sys_sendmsg+0x415/0x880 [ 10.575615][ T214] ? ___sys_sendmsg+0x14e/0x1d0 [ 10.575616][ T214] ? __sys_sendmsg+0x12c/0x1d0 [ 10.575618][ T214] ? do_syscall_64+0xff/0x530 [ 10.575621][ T214] ? entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 10.575623][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575625][ T214] ? lock_acquire+0x13c/0x160 [ 10.575626][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575628][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575630][ T214] ? trace_contention_end+0xb3/0x180 [ 10.575632][ T214] ? __mutex_lock+0x1db/0x1ea0 [ 10.575634][ T214] ? __mutex_lock+0x9a3/0x1ea0 [ 10.575636][ T214] ? rtnl_newlink+0x9a8/0x11c0 [ 10.575638][ T214] ? ww_mutex_lock+0x160/0x160 [ 10.575639][ T214] ? nla_get_range_signed+0x3d0/0x3d0 [ 10.575641][ T214] ? __rtnl_newlink+0x3fa/0xa50 [ 10.575644][ T214] rtnl_newlink+0x9f1/0x11c0 [ 10.575645][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575652][ T214] ? rtnl_bridge_getlink+0x850/0x850 [ 10.575654][ T214] ? lock_acquire+0x13c/0x160 [ 10.575655][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575657][ T214] ? is_bpf_text_address+0x3e/0x110 [ 10.575660][ T214] ? is_bpf_text_address+0x72/0x110 [ 10.575662][ T214] ? kernel_text_address+0x149/0x170 [ 10.575663][ T214] ? __kernel_text_address+0x12/0x30 [ 10.575665][ T214] ? write_profile+0xf0/0xf0 [ 10.575666][ T214] ? unwind_get_return_address+0x67/0xd0 [ 10.575668][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575670][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575671][ T214] ? cap_capable+0x1d7/0x3d0 [ 10.575675][ T214] ? lock_acquire+0x13c/0x160 [ 10.575676][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575678][ T214] ? rtnl_bridge_getlink+0x850/0x850 [ 10.575680][ T214] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 10.575681][ T214] ? rtnl_link_fill+0x920/0x920 [ 10.575684][ T214] ? filter_irq_stacks+0xd0/0xd0 [ 10.575686][ T214] ? stack_depot_save_flags+0x1bc/0x790 [ 10.575688][ T214] netlink_rcv_skb+0x14e/0x3a0 [ 10.575690][ T214] ? rtnl_link_fill+0x920/0x920 [ 10.575691][ T214] ? lock_release+0x184/0x1f0 [ 10.575693][ T214] ? netlink_ack+0xcf0/0xcf0 [ 10.575694][ T214] ? __netlink_lookup+0xb9/0x6b0 [ 10.575697][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575699][ T214] ? lock_release+0x184/0x1f0 [ 10.575701][ T214] netlink_unicast+0x486/0x750 [ 10.575703][ T214] ? netlink_attachskb+0x810/0x810 [ 10.575705][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575706][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575708][ T214] ? lock_acquire+0x13c/0x160 [ 10.575710][ T214] netlink_sendmsg+0x735/0xc60 [ 10.575712][ T214] ? netlink_unicast+0x750/0x750 [ 10.575714][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575715][ T214] ? lock_release+0x184/0x1f0 [ 10.575717][ T214] ____sys_sendmsg+0x415/0x880 [ 10.575719][ T214] ? copy_msghdr_from_user+0x279/0x420 [ 10.575721][ T214] ? get_timestamp.constprop.0+0x390/0x390 [ 10.575722][ T214] ? move_addr_to_kernel+0x40/0x40 [ 10.575724][ T214] ? filter_irq_stacks+0xd0/0xd0 [ 10.575726][ T214] ___sys_sendmsg+0x14e/0x1d0 [ 10.575728][ T214] ? copy_msghdr_from_user+0x420/0x420 [ 10.575733][ T214] __sys_sendmsg+0x12c/0x1d0 [ 10.575735][ T214] ? __sys_sendmsg_sock+0x20/0x20 [ 10.575737][ T214] ? rcu_is_watching+0x16/0xd0 [ 10.575739][ T214] do_syscall_64+0xff/0x530 [ 10.575741][ T214] ? exc_page_fault+0xee/0x100 [ 10.575742][ T214] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 10.575744][ T214] RIP: 0033:0x7fe449c0854e [ 10.575746][ T214] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa [ 10.575748][ T214] RSP: 002b:00007ffe4c189a70 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 10.575752][ T214] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fe449c0854e [ 10.575753][ T214] RDX: 0000000000000000 RSI: 00007ffe4c189b20 RDI: 0000000000000005 [ 10.575754][ T214] RBP: 00007ffe4c189a80 R08: 0000000000000000 R09: 0000000000000000 [ 10.575755][ T214] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a915ca9 [ 10.575755][ T214] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe4c18a1f0 [ 10.575758][ T214] [ 10.596315][ T214] ns3br1: port 1(ns3eth1) entered disabled state [ 10.596483][ T214] ns3eth1: entered allmulticast mode [ 10.597043][ T214] ns3eth1: entered promiscuous mode [ 10.597949][ T39] ns3br1: port 1(ns3eth1) entered blocking state [ 10.598184][ T39] ns3br1: port 1(ns3eth1) entered forwarding state [ 10.601911][ T214] ip (214) used greatest stack depth: 23336 bytes left [ 10.628388][ T215] ns3br1: port 2(ns3eth2) entered blocking state [ 10.628617][ T215] ns3br1: port 2(ns3eth2) entered disabled state [ 10.628853][ T215] ns3eth2: entered allmulticast mode [ 10.629464][ T215] ns3eth2: entered promiscuous mode [ 10.647004][ T216] ns3br1: port 3(ns3eth3) entered blocking state [ 10.647184][ T216] ns3br1: port 3(ns3eth3) entered disabled state [ 10.647346][ T216] ns3eth3: entered allmulticast mode [ 10.647890][ T216] ns3eth3: entered promiscuous mode [ 10.667246][ T38] ns3br1: port 2(ns3eth2) entered blocking state [ 10.667459][ T38] ns3br1: port 2(ns3eth2) entered forwarding state [ 10.691134][ T39] ns3br1: port 3(ns3eth3) entered blocking state [ 10.691354][ T39] ns3br1: port 3(ns3eth3) entered forwarding state [ 10.943075][ T230] ns1eth1: entered promiscuous mode [ 10.943613][ T230] ns1eth2: entered promiscuous mode [ 10.967047][ T231] ns2eth1: entered promiscuous mode [ 10.967584][ T231] ns2eth2: entered promiscuous mode [ 10.968022][ T231] ns2eth3: entered promiscuous mode [ 23.596443][ T12] ns1eth1: left promiscuous mode [ 23.596461][ T12] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 23.596463][ T12] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 12, name: kworker/u16:0 [ 23.596465][ T12] preempt_count: 1, expected: 0 [ 23.596465][ T12] RCU nest depth: 0, expected: 0 [ 23.596466][ T12] INFO: lockdep is turned off. [ 23.596467][ T12] irq event stamp: 92 [ 23.596468][ T12] hardirqs last enabled at (91): [] _raw_spin_unlock_irq+0x28/0x50 [ 23.596476][ T12] hardirqs last disabled at (92): [] __schedule+0x1246/0x20e0 [ 23.596479][ T12] softirqs last enabled at (88): [] addrconf_verify_rtnl+0x38a/0x10b0 [ 23.596482][ T12] softirqs last disabled at (82): [] addrconf_verify_rtnl+0x31/0x10b0 [ 23.596485][ T12] Preemption disabled at: [ 23.596486][ T12] [] vprintk_emit+0x31b/0x3e0 [ 23.596494][ T12] CPU: 3 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 23.596497][ T12] Tainted: [W]=WARN [ 23.596498][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.596500][ T12] Workqueue: netns cleanup_net [ 23.596506][ T12] Call Trace: [ 23.596508][ T12] [ 23.596510][ T12] dump_stack_lvl+0x6f/0xa0 [ 23.596515][ T12] ? vprintk_emit+0x31b/0x3e0 [ 23.596517][ T12] __might_resched.cold+0x1fe/0x2c1 [ 23.596520][ T12] ? kasan_save_stack+0x2f/0x50 [ 23.596524][ T12] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 23.596527][ T12] ? rcu_is_watching+0x16/0xd0 [ 23.596531][ T12] __kmalloc_noprof+0x443/0x760 [ 23.596534][ T12] ? __rwlock_init+0x150/0x150 [ 23.596536][ T12] ? alloc_buf.isra.0+0x4b/0x260 [ 23.596540][ T12] ? do_raw_spin_unlock+0x59/0x250 [ 23.596542][ T12] alloc_buf.isra.0+0x4b/0x260 [ 23.596544][ T12] put_chars+0x1e1/0x2f0 [ 23.596546][ T12] ? __send_to_port+0x420/0x420 [ 23.596548][ T12] ? console_prepend_replay+0x20/0x20 [ 23.596550][ T12] hvc_console_print+0x292/0x780 [ 23.596554][ T12] ? hvc_write+0x3a0/0x3a0 [ 23.596556][ T12] ? rcu_is_watching+0x16/0xd0 [ 23.596557][ T12] ? rcu_is_watching+0x16/0xd0 [ 23.596559][ T12] ? lock_acquire+0x13c/0x160 [ 23.596561][ T12] console_emit_next_record+0x22f/0x4c0 [ 23.596564][ T12] ? devkmsg_read+0x4b0/0x4b0 [ 23.596566][ T12] ? rcu_is_watching+0x16/0xd0 [ 23.596567][ T12] ? rcu_is_watching+0x16/0xd0 [ 23.596569][ T12] ? rcu_is_watching+0x16/0xd0 [ 23.596570][ T12] ? lock_acquire+0x13c/0x160 [ 23.596572][ T12] ? console_flush_one_record+0x111/0x710 [ 23.596574][ T12] console_flush_one_record+0x46f/0x710 [ 23.596576][ T12] ? console_emit_next_record+0x4c0/0x4c0 [ 23.596579][ T12] console_unlock+0xee/0x1f0 [ 23.596580][ T12] ? lock_acquire+0x13c/0x160 [ 23.596582][ T12] ? console_flush_one_record+0x710/0x710 [ 23.596584][ T12] ? rcu_is_watching+0x16/0xd0 [ 23.596585][ T12] ? lock_release+0x184/0x1f0 [ 23.596587][ T12] ? lock_acquire+0x60/0x160 [ 23.596588][ T12] ? __rcu_read_lock+0x30/0x70 [ 23.596590][ T12] ? __down_trylock_console_sem+0x5e/0xa0 [ 23.596592][ T12] ? vprintk_emit+0x320/0x3e0 [ 23.596594][ T12] vprintk_emit+0x37c/0x3e0 [ 23.596596][ T12] ? wake_up_klogd_work_func+0x90/0x90 [ 23.596598][ T12] ? _raw_spin_unlock+0x2d/0x50 [ 23.596599][ T12] ? trace_hardirqs_on+0x36/0x40 [ 23.596602][ T12] ? finish_task_switch.isra.0+0x209/0xa70 [ 23.596604][ T12] _printk+0xc7/0x100 [ 23.596607][ T12] ? snapshot_read.cold+0x21/0x21 [ 23.596609][ T12] ? rcu_is_watching+0x16/0xd0 [ 23.596611][ T12] ? lock_release+0x184/0x1f0 [ 23.596612][ T12] ? netdev_name+0x43/0x60 [ 23.596615][ T12] ? __netdev_printk+0x17f/0x1d0 [ 23.596617][ T12] netdev_info+0xe2/0x116 [ 23.596618][ T12] ? netdev_notice+0x120/0x120 [ 23.596620][ T12] ? synchronize_rcu_expedited+0x440/0x510 [ 23.596622][ T12] ? netif_set_mtu_ext+0x5f0/0x5f0 [ 23.596624][ T12] ? synchronize_rcu_normal+0x340/0x340 [ 23.596625][ T12] ? mutex_is_locked+0x1c/0x50 [ 23.596628][ T12] __dev_set_promiscuity.cold+0x95/0x104 [ 23.596631][ T12] ? sync_rcu_exp_select_cpus+0x700/0x700 [ 23.596632][ T12] ? netdev_sync_lower_features+0x550/0x550 [ 23.596634][ T12] netif_set_promiscuity+0x4c/0xc0 [ 23.596637][ T12] dev_set_promiscuity+0x9d/0x150 [ 23.596639][ T12] hsr_del_port+0x39d/0x540 [ 23.596643][ T12] hsr_del_ports+0x24/0x80 [ 23.596645][ T12] hsr_dellink+0x5d/0x90 [ 23.596647][ T12] default_device_exit_batch+0x19d/0x600 [ 23.596648][ T12] ? generic_xdp_install+0x470/0x470 [ 23.596650][ T12] ? unregister_netdevice_queue+0x470/0x470 [ 23.596651][ T12] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 23.596653][ T12] ? mutex_is_locked+0x1c/0x50 [ 23.596655][ T12] ops_undo_list+0x2ce/0x8f0 [ 23.596663][ T12] ? rtnl_net_dumpid_one+0x2d0/0x2d0 [ 23.596665][ T12] ? idr_destroy+0x121/0x250 [ 23.596668][ T12] cleanup_net+0x431/0x890 [ 23.596670][ T12] ? net_passive_dec+0x230/0x230 [ 23.596671][ T12] ? update_load_avg+0x141/0xf00 [ 23.596674][ T12] ? lock_acquire+0x13c/0x160 [ 23.596675][ T12] ? rcu_is_watching+0x16/0xd0 [ 23.596677][ T12] process_one_work+0xe3e/0x1560 [ 23.596684][ T12] ? __queue_delayed_work+0x470/0x470 [ 23.596686][ T12] ? find_held_lock+0x2b/0x80 [ 23.596689][ T12] ? __rwlock_init+0x150/0x150 [ 23.596691][ T12] worker_thread+0x4f1/0xd60 [ 23.596694][ T12] ? rescuer_thread+0x1340/0x1340 [ 23.596696][ T12] kthread+0x367/0x460 [ 23.596698][ T12] ? trace_irq_enable.constprop.0+0x9b/0x160 [ 23.596700][ T12] ? kthread_affine_preferred+0x4c0/0x4c0 [ 23.596702][ T12] ret_from_fork+0x474/0x6b0 [ 23.596705][ T12] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120 [ 23.596707][ T12] ? __switch_to+0x5a3/0xe00 [ 23.596709][ T12] ? kthread_affine_preferred+0x4c0/0x4c0 [ 23.596711][ T12] ret_from_fork_asm+0x11/0x20 [ 23.596715][ T12] [ 23.615504][ T12] ns1eth2: left promiscuous mode [ 23.621623][ T12] ns2eth2 (unregistering): left promiscuous mode [ 23.625032][ T12] ns2eth1 (unregistering): left promiscuous mode [ 23.707986][ T12] ns2eth3: left promiscuous mode [ 23.709673][ T12] ns3br1: port 1(ns3eth1) entered disabled state [ 23.712141][ T12] ns3eth1 (unregistering): left allmulticast mode [ 23.712324][ T12] ns3eth1 (unregistering): left promiscuous mode [ 23.712493][ T12] ns3br1: port 1(ns3eth1) entered disabled state [ 23.813483][ T12] ns3eth3: left allmulticast mode [ 23.813897][ T12] ns3eth3: left promiscuous mode [ 23.814207][ T12] ns3br1: port 3(ns3eth3) entered disabled state [ 23.815079][ T12] ns3eth2: left allmulticast mode [ 23.815268][ T12] ns3eth2: left promiscuous mode [ 23.815533][ T12] ns3br1: port 2(ns3eth2) entered disabled state