[ 10.849586][ T213] ns3br1: port 1(ns3eth1) entered blocking state [ 10.849653][ T213] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 10.849655][ T213] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 213, name: ip [ 10.849656][ T213] preempt_count: 1, expected: 0 [ 10.849657][ T213] RCU nest depth: 0, expected: 0 [ 10.849658][ T213] locks held by ip/213: 5, last CPU#0: [ 10.849661][ T213] #0: ffffffff8e2e3740 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x9a8/0x11c0 [ 10.849673][ T213] #1: ffffffff8db79cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 10.849679][ T213] #2: ffffffff8db79d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 10.849682][ T213] #3: ffffffff8da99660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 10.849686][ T213] #4: ffffffff8da99560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 10.849689][ T213] irq event stamp: 15868 [ 10.849690][ T213] hardirqs last enabled at (15867): [] __down_trylock_console_sem+0x86/0xa0 [ 10.849693][ T213] hardirqs last disabled at (15868): [] console_emit_next_record+0x3d4/0x4c0 [ 10.849695][ T213] softirqs last enabled at (15798): [] addrconf_permanent_addr+0x2b1/0x9c0 [ 10.849698][ T213] softirqs last disabled at (15796): [] addrconf_permanent_addr+0x108/0x9c0 [ 10.849701][ T213] Preemption disabled at: [ 10.849702][ T213] [] vprintk_emit+0x31b/0x3e0 [ 10.849707][ T213] CPU: 0 UID: 0 PID: 213 Comm: ip Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 10.849710][ T213] Tainted: [W]=WARN [ 10.849711][ T213] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.849713][ T213] Call Trace: [ 10.849714][ T213] [ 10.849716][ T213] dump_stack_lvl+0x6f/0xa0 [ 10.849722][ T213] ? vprintk_emit+0x31b/0x3e0 [ 10.849724][ T213] __might_resched.cold+0x1fe/0x2c1 [ 10.849728][ T213] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 10.849732][ T213] ? __kmalloc_noprof+0xdb/0x760 [ 10.849737][ T213] __kmalloc_noprof+0x443/0x760 [ 10.849739][ T213] ? alloc_buf.isra.0+0x4b/0x260 [ 10.849745][ T213] ? do_raw_spin_unlock+0x59/0x250 [ 10.849747][ T213] alloc_buf.isra.0+0x4b/0x260 [ 10.849751][ T213] put_chars+0x1e1/0x2f0 [ 10.849754][ T213] ? __send_to_port+0x420/0x420 [ 10.849755][ T213] ? check_prev_add+0x316/0xe90 [ 10.849759][ T213] ? validate_chain+0x34a/0xc20 [ 10.849763][ T213] hvc_console_print+0x292/0x780 [ 10.849766][ T213] ? mark_usage+0x61/0x170 [ 10.849768][ T213] ? __lock_acquire+0x518/0xc20 [ 10.849769][ T213] ? __lock_acquire+0x518/0xc20 [ 10.849773][ T213] ? hvc_write+0x3a0/0x3a0 [ 10.849775][ T213] ? lock_acquire.part.0+0xd4/0x280 [ 10.849779][ T213] ? lock_acquire+0x13c/0x160 [ 10.849783][ T213] console_emit_next_record+0x22f/0x4c0 [ 10.849786][ T213] ? devkmsg_read+0x4b0/0x4b0 [ 10.849788][ T213] ? console_flush_one_record+0x106/0x710 [ 10.849791][ T213] ? rcu_is_watching+0x16/0xd0 [ 10.849795][ T213] ? lock_acquire+0x13c/0x160 [ 10.849799][ T213] console_flush_one_record+0x46f/0x710 [ 10.849803][ T213] ? console_emit_next_record+0x4c0/0x4c0 [ 10.849805][ T213] ? __lock_acquire+0x518/0xc20 [ 10.849810][ T213] console_unlock+0xee/0x1f0 [ 10.849813][ T213] ? console_flush_one_record+0x710/0x710 [ 10.849815][ T213] ? rcu_is_watching+0x16/0xd0 [ 10.849817][ T213] ? lock_acquire+0x60/0x160 [ 10.849821][ T213] ? __down_trylock_console_sem+0x5e/0xa0 [ 10.849822][ T213] ? vprintk_emit+0x320/0x3e0 [ 10.849825][ T213] vprintk_emit+0x37c/0x3e0 [ 10.849829][ T213] ? wake_up_klogd_work_func+0x90/0x90 [ 10.849831][ T213] ? __lock_release.isra.0+0x69/0x1a0 [ 10.849833][ T213] ? _raw_spin_unlock_irqrestore+0x40/0x80 [ 10.849837][ T213] ? mark_held_locks+0x40/0x70 [ 10.849840][ T213] _printk+0xc7/0x100 [ 10.849843][ T213] ? snapshot_read.cold+0x21/0x21 [ 10.849847][ T213] ? br_multicast_flood+0x960/0x960 [ 10.849849][ T213] ? do_setlink.isra.0+0xa31/0x2750 [ 10.849850][ T213] ? rtnl_newlink+0x9f1/0x11c0 [ 10.849852][ T213] ? rtnetlink_rcv_msg+0x6fd/0xbd0 [ 10.849856][ T213] br_set_state+0x22f/0x410 [ 10.849859][ T213] br_init_port+0xc4/0x200 [ 10.849862][ T213] new_nbp+0x39c/0x580 [ 10.849865][ T213] br_add_if+0x212/0x1360 [ 10.849868][ T213] ? kernel_text_address+0x149/0x170 [ 10.849871][ T213] ? __kernel_text_address+0x12/0x30 [ 10.849875][ T213] do_set_master+0x357/0x580 [ 10.849877][ T213] ? netif_change_flags+0xfe/0x190 [ 10.849881][ T213] do_setlink.isra.0+0xa31/0x2750 [ 10.849884][ T213] ? stack_trace_save+0x93/0xc0 [ 10.849894][ T213] ? rtnl_link_get_size+0x350/0x350 [ 10.849896][ T213] ? rcu_read_lock_any_held+0x66/0x90 [ 10.849898][ T213] ? stack_depot_save_flags+0x38e/0x790 [ 10.849902][ T213] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 10.849904][ T213] ? rcu_read_lock_any_held+0x3c/0x90 [ 10.849906][ T213] ? validate_chain+0x38b/0xc20 [ 10.849909][ T213] ? kasan_save_stack+0x3d/0x50 [ 10.849912][ T213] ? kasan_save_stack+0x2f/0x50 [ 10.849913][ T213] ? kasan_save_track+0x14/0x30 [ 10.849916][ T213] ? __lock_acquire+0x518/0xc20 [ 10.849918][ T213] ? __netlink_deliver_tap+0x24e/0x9b0 [ 10.849921][ T213] ? ___sys_sendmsg+0x70/0x1d0 [ 10.849926][ T213] ? lock_acquire.part.0+0xd4/0x280 [ 10.849928][ T213] ? rtnl_newlink+0x9a8/0x11c0 [ 10.849930][ T213] ? rcu_is_watching+0x16/0xd0 [ 10.849933][ T213] ? lock_acquire+0x13c/0x160 [ 10.849934][ T213] ? rcu_is_watching+0x16/0xd0 [ 10.849936][ T213] ? rcu_is_watching+0x16/0xd0 [ 10.849938][ T213] ? trace_contention_end+0xb3/0x180 [ 10.849942][ T213] ? __mutex_lock+0x1db/0x1ea0 [ 10.849944][ T213] ? __mutex_lock+0x9a3/0x1ea0 [ 10.849947][ T213] ? rtnl_newlink+0x9a8/0x11c0 [ 10.849950][ T213] ? ww_mutex_lock+0x160/0x160 [ 10.849952][ T213] ? nla_get_range_signed+0x3d0/0x3d0 [ 10.849957][ T213] ? __rtnl_newlink+0x3fa/0xa50 [ 10.849962][ T213] rtnl_newlink+0x9f1/0x11c0 [ 10.849967][ T213] ? rtnl_bridge_getlink+0x850/0x850 [ 10.849969][ T213] ? __lock_acquire+0x518/0xc20 [ 10.849973][ T213] ? lock_acquire.part.0+0xd4/0x280 [ 10.849975][ T213] ? find_held_lock+0x2b/0x80 [ 10.849977][ T213] ? rtnl_bridge_getlink+0x850/0x850 [ 10.849979][ T213] ? __lock_release.isra.0+0x69/0x1a0 [ 10.849982][ T213] ? rtnl_bridge_getlink+0x850/0x850 [ 10.849984][ T213] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 10.849987][ T213] ? rtnl_link_fill+0x920/0x920 [ 10.849989][ T213] ? __lock_acquire+0x518/0xc20 [ 10.849993][ T213] ? lock_acquire.part.0+0xd4/0x280 [ 10.849995][ T213] ? find_held_lock+0x2b/0x80 [ 10.849998][ T213] netlink_rcv_skb+0x14e/0x3a0 [ 10.850000][ T213] ? rtnl_link_fill+0x920/0x920 [ 10.850003][ T213] ? netlink_ack+0xcf0/0xcf0 [ 10.850009][ T213] ? netlink_deliver_tap+0xc5/0x330 [ 10.850011][ T213] ? netlink_deliver_tap+0x13c/0x330 [ 10.850015][ T213] netlink_unicast+0x486/0x750 [ 10.850019][ T213] ? netlink_attachskb+0x810/0x810 [ 10.850022][ T213] ? __lock_acquire+0x518/0xc20 [ 10.850026][ T213] netlink_sendmsg+0x735/0xc60 [ 10.850030][ T213] ? netlink_unicast+0x750/0x750 [ 10.850034][ T213] ? __might_fault+0x97/0x140 [ 10.850039][ T213] ____sys_sendmsg+0x415/0x880 [ 10.850041][ T213] ? copy_msghdr_from_user+0x279/0x420 [ 10.850043][ T213] ? get_timestamp.constprop.0+0x390/0x390 [ 10.850045][ T213] ? move_addr_to_kernel+0x40/0x40 [ 10.850052][ T213] ___sys_sendmsg+0x14e/0x1d0 [ 10.850055][ T213] ? copy_msghdr_from_user+0x420/0x420 [ 10.850072][ T213] __sys_sendmsg+0x12c/0x1d0 [ 10.850075][ T213] ? __sys_sendmsg_sock+0x20/0x20 [ 10.850081][ T213] ? rcu_is_watching+0x16/0xd0 [ 10.850085][ T213] do_syscall_64+0xff/0x530 [ 10.850088][ T213] ? exc_page_fault+0xee/0x100 [ 10.850090][ T213] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 10.850093][ T213] RIP: 0033:0x7fc6e588354e [ 10.850097][ T213] 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 [ 10.850098][ T213] RSP: 002b:00007fff29e05c60 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 10.850101][ T213] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fc6e588354e [ 10.850102][ T213] RDX: 0000000000000000 RSI: 00007fff29e05d10 RDI: 0000000000000005 [ 10.850103][ T213] RBP: 00007fff29e05c70 R08: 0000000000000000 R09: 0000000000000000 [ 10.850104][ T213] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a917064 [ 10.850105][ T213] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff29e063e0 [ 10.850111][ T213] [ 10.883534][ T213] ns3br1: port 1(ns3eth1) entered disabled state [ 10.883818][ T213] ns3eth1: entered allmulticast mode [ 10.884816][ T213] ns3eth1: entered promiscuous mode [ 10.886475][ T46] ns3br1: port 1(ns3eth1) entered blocking state [ 10.886911][ T46] ns3br1: port 1(ns3eth1) entered forwarding state [ 10.897885][ T213] ip (213) used greatest stack depth: 23336 bytes left [ 10.927306][ T214] ns3br1: port 2(ns3eth2) entered blocking state [ 10.927650][ T214] ns3br1: port 2(ns3eth2) entered disabled state [ 10.927974][ T214] ns3eth2: entered allmulticast mode [ 10.929026][ T214] ns3eth2: entered promiscuous mode [ 10.960459][ T215] ns3br1: port 3(ns3eth3) entered blocking state [ 10.960742][ T215] ns3br1: port 3(ns3eth3) entered disabled state [ 10.961014][ T215] ns3eth3: entered allmulticast mode [ 10.962454][ T215] ns3eth3: entered promiscuous mode [ 10.990137][ T46] ns3br1: port 2(ns3eth2) entered blocking state [ 10.990460][ T46] ns3br1: port 2(ns3eth2) entered forwarding state [ 11.017072][ T63] ns3br1: port 3(ns3eth3) entered blocking state [ 11.017345][ T63] ns3br1: port 3(ns3eth3) entered forwarding state [ 11.388646][ T229] ns1eth1: entered promiscuous mode [ 11.389564][ T229] ns1eth2: entered promiscuous mode [ 11.424178][ T230] ns2eth1: entered promiscuous mode [ 11.424973][ T230] ns2eth2: entered promiscuous mode [ 11.425554][ T230] ns2eth3: entered promiscuous mode [ 24.382989][ T12] ns1eth1: left promiscuous mode [ 24.383040][ T12] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 24.383042][ T12] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 12, name: kworker/u16:0 [ 24.383044][ T12] preempt_count: 1, expected: 0 [ 24.383045][ T12] RCU nest depth: 0, expected: 0 [ 24.383046][ T12] locks held by kworker/u16:0/12: 8, last CPU#1: [ 24.383048][ T12] #0: ff11000001a09d40 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xd9a/0x1560 [ 24.383060][ T12] #1: ffa00000000c7d10 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xdfc/0x1560 [ 24.383064][ T12] #2: ffffffff8e2c7a88 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xbf/0x890 [ 24.383069][ T12] #3: ffffffff8e2e3740 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0x9a/0x600 [ 24.383073][ T12] #4: ffffffff8db79cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 24.383078][ T12] #5: ffffffff8db79d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 24.383082][ T12] #6: ffffffff8da99660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 24.383085][ T12] #7: ffffffff8da99560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 24.383088][ T12] irq event stamp: 32444 [ 24.383089][ T12] hardirqs last enabled at (32443): [] __down_trylock_console_sem+0x86/0xa0 [ 24.383092][ T12] hardirqs last disabled at (32444): [] console_emit_next_record+0x3d4/0x4c0 [ 24.383094][ T12] softirqs last enabled at (32316): [] tcp_close+0x2b/0xb0 [ 24.383097][ T12] softirqs last disabled at (32314): [] release_sock+0x21/0x240 [ 24.383100][ T12] Preemption disabled at: [ 24.383101][ T12] [] vprintk_emit+0x31b/0x3e0 [ 24.383106][ T12] CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 24.383110][ T12] Tainted: [W]=WARN [ 24.383111][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 24.383113][ T12] Workqueue: netns cleanup_net [ 24.383116][ T12] Call Trace: [ 24.383118][ T12] [ 24.383120][ T12] dump_stack_lvl+0x6f/0xa0 [ 24.383125][ T12] ? vprintk_emit+0x31b/0x3e0 [ 24.383127][ T12] __might_resched.cold+0x1fe/0x2c1 [ 24.383132][ T12] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 24.383136][ T12] ? __kmalloc_noprof+0xdb/0x760 [ 24.383141][ T12] __kmalloc_noprof+0x443/0x760 [ 24.383143][ T12] ? alloc_buf.isra.0+0x4b/0x260 [ 24.383149][ T12] ? do_raw_spin_unlock+0x59/0x250 [ 24.383152][ T12] alloc_buf.isra.0+0x4b/0x260 [ 24.383155][ T12] put_chars+0x1e1/0x2f0 [ 24.383157][ T12] ? check_prev_add+0xef/0xe90 [ 24.383159][ T12] ? __send_to_port+0x420/0x420 [ 24.383163][ T12] ? validate_chain+0x34a/0xc20 [ 24.383167][ T12] hvc_console_print+0x292/0x780 [ 24.383174][ T12] ? hvc_write+0x3a0/0x3a0 [ 24.383177][ T12] ? rcu_is_watching+0x16/0xd0 [ 24.383181][ T12] ? lock_acquire+0x13c/0x160 [ 24.383185][ T12] console_emit_next_record+0x22f/0x4c0 [ 24.383189][ T12] ? devkmsg_read+0x4b0/0x4b0 [ 24.383190][ T12] ? console_flush_one_record+0x106/0x710 [ 24.383193][ T12] ? rcu_is_watching+0x16/0xd0 [ 24.383196][ T12] ? lock_acquire+0x13c/0x160 [ 24.383200][ T12] console_flush_one_record+0x46f/0x710 [ 24.383204][ T12] ? console_emit_next_record+0x4c0/0x4c0 [ 24.383206][ T12] ? __lock_acquire+0x518/0xc20 [ 24.383211][ T12] console_unlock+0xee/0x1f0 [ 24.383214][ T12] ? console_flush_one_record+0x710/0x710 [ 24.383215][ T12] ? rcu_is_watching+0x16/0xd0 [ 24.383218][ T12] ? lock_acquire+0x60/0x160 [ 24.383222][ T12] ? __down_trylock_console_sem+0x5e/0xa0 [ 24.383223][ T12] ? vprintk_emit+0x320/0x3e0 [ 24.383226][ T12] vprintk_emit+0x37c/0x3e0 [ 24.383230][ T12] ? wake_up_klogd_work_func+0x90/0x90 [ 24.383233][ T12] ? lockdep_hardirqs_on_prepare.part.0+0x9a/0x160 [ 24.383235][ T12] ? lockdep_hardirqs_on+0x91/0x130 [ 24.383237][ T12] ? finish_task_switch.isra.0+0x209/0xa70 [ 24.383239][ T12] ? finish_task_switch.isra.0+0x209/0xa70 [ 24.383242][ T12] _printk+0xc7/0x100 [ 24.383246][ T12] ? snapshot_read.cold+0x21/0x21 [ 24.383249][ T12] ? synchronize_rcu_expedited+0x440/0x510 [ 24.383251][ T12] ? netdev_name+0x43/0x60 [ 24.383255][ T12] ? __netdev_printk+0x17f/0x1d0 [ 24.383258][ T12] netdev_info+0xe2/0x116 [ 24.383261][ T12] ? netdev_notice+0x120/0x120 [ 24.383264][ T12] ? synchronize_rcu_expedited+0x440/0x510 [ 24.383265][ T12] ? netif_set_mtu_ext+0x5f0/0x5f0 [ 24.383268][ T12] ? synchronize_rcu_normal+0x340/0x340 [ 24.383271][ T12] ? mutex_is_locked+0x1c/0x50 [ 24.383275][ T12] __dev_set_promiscuity.cold+0x95/0x104 [ 24.383278][ T12] ? sync_rcu_exp_select_cpus+0x700/0x700 [ 24.383280][ T12] netif_set_promiscuity+0x4c/0xc0 [ 24.383285][ T12] dev_set_promiscuity+0x9d/0x150 [ 24.383288][ T12] hsr_del_port+0x39d/0x540 [ 24.383293][ T12] hsr_del_ports+0x24/0x80 [ 24.383296][ T12] hsr_dellink+0x5d/0x90 [ 24.383298][ T12] default_device_exit_batch+0x19d/0x600 [ 24.383302][ T12] ? unregister_netdevice_queue+0x470/0x470 [ 24.383304][ T12] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 24.383307][ T12] ? mutex_is_locked+0x1c/0x50 [ 24.383310][ T12] ops_undo_list+0x2ce/0x8f0 [ 24.383314][ T12] ? lockdep_hardirqs_on+0x91/0x130 [ 24.383316][ T12] ? rtnl_net_dumpid_one+0x2d0/0x2d0 [ 24.383318][ T12] ? __lock_release.isra.0+0x69/0x1a0 [ 24.383321][ T12] ? idr_destroy+0x121/0x250 [ 24.383325][ T12] cleanup_net+0x431/0x890 [ 24.383328][ T12] ? net_passive_dec+0x230/0x230 [ 24.383332][ T12] ? lock_acquire+0x13c/0x160 [ 24.383334][ T12] ? rcu_is_watching+0x16/0xd0 [ 24.383338][ T12] process_one_work+0xe3e/0x1560 [ 24.383345][ T12] ? __queue_delayed_work+0x470/0x470 [ 24.383347][ T12] ? lock_acquire.part.0+0xd4/0x280 [ 24.383355][ T12] worker_thread+0x4f1/0xd60 [ 24.383362][ T12] ? rescuer_thread+0x1340/0x1340 [ 24.383364][ T12] kthread+0x367/0x460 [ 24.383367][ T12] ? trace_irq_enable.constprop.0+0x9b/0x160 [ 24.383369][ T12] ? kthread_affine_preferred+0x4c0/0x4c0 [ 24.383372][ T12] ret_from_fork+0x474/0x6b0 [ 24.383376][ T12] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120 [ 24.383379][ T12] ? __switch_to+0x5a3/0xe00 [ 24.383382][ T12] ? kthread_affine_preferred+0x4c0/0x4c0 [ 24.383385][ T12] ret_from_fork_asm+0x11/0x20 [ 24.383393][ T12] [ 24.416153][ T12] ns1eth2: left promiscuous mode [ 24.431070][ T12] ns2eth2 (unregistering): left promiscuous mode [ 24.434333][ T12] ns2eth1 (unregistering): left promiscuous mode [ 24.537449][ T12] ns2eth3: left promiscuous mode [ 24.540329][ T12] ns3br1: port 1(ns3eth1) entered disabled state [ 24.545641][ T12] ns3eth1 (unregistering): left allmulticast mode [ 24.545924][ T12] ns3eth1 (unregistering): left promiscuous mode [ 24.546187][ T12] ns3br1: port 1(ns3eth1) entered disabled state [ 24.672255][ T12] ns3eth3: left allmulticast mode [ 24.672755][ T12] ns3eth3: left promiscuous mode [ 24.673068][ T12] ns3br1: port 3(ns3eth3) entered disabled state [ 24.674391][ T12] ns3eth2: left allmulticast mode [ 24.674790][ T12] ns3eth2: left promiscuous mode [ 24.675065][ T12] ns3br1: port 2(ns3eth2) entered disabled state