[ 53.506780][ T654] br1: port 1(veth1) entered blocking state [ 53.507016][ T654] br1: port 1(veth1) entered disabled state [ 53.507226][ T654] veth1: entered allmulticast mode [ 53.508671][ T654] veth1: entered promiscuous mode [ 53.533677][ T187] br1: port 1(veth1) entered blocking state [ 53.533872][ T187] br1: port 1(veth1) entered forwarding state [ 61.094791][ T710] veth1: left allmulticast mode [ 61.095044][ T710] veth1: left promiscuous mode [ 61.095372][ T710] br1: port 1(veth1) entered disabled state [ 63.135922][ T712] br1: port 1(veth1) entered blocking state [ 63.136167][ T712] br1: port 1(veth1) entered disabled state [ 63.136368][ T712] veth1: entered allmulticast mode [ 63.137819][ T712] veth1: entered promiscuous mode [ 63.138219][ T712] br1: port 1(veth1) entered blocking state [ 63.138452][ T712] br1: port 1(veth1) entered forwarding state [ 81.884347][ T819] veth1: left allmulticast mode [ 81.884578][ T819] veth1: left promiscuous mode [ 81.884857][ T819] br1: port 1(veth1) entered disabled state [ 83.950539][ T822] br1: port 1(veth1) entered blocking state [ 83.950759][ T822] br1: port 1(veth1) entered disabled state [ 83.950964][ T822] veth1: entered allmulticast mode [ 83.952457][ T822] veth1: entered promiscuous mode [ 83.952727][ T822] br1: port 1(veth1) entered blocking state [ 83.952898][ T822] br1: port 1(veth1) entered forwarding state [ 86.151873][ T856] [ 86.151963][ T856] ======================================================== [ 86.152095][ T856] WARNING: possible irq lock inversion dependency detected [ 86.152216][ T856] 7.1.0-rc5-virtme #1 Not tainted [ 86.152298][ T856] -------------------------------------------------------- [ 86.152421][ T856] sysctl/856 just changed the state of lock: [ 86.152520][ T856] ffffffff9777e8b8 (acaddr_hash_lock){+.+.}-{3:3}, at: __ipv6_dev_ac_dec+0x236/0x5d0 [ 86.152678][ T856] but this lock was taken by another, SOFTIRQ-safe lock in the past: [ 86.152799][ T856] (&ndev->lock){++--}-{3:3} [ 86.152802][ T856] [ 86.152802][ T856] [ 86.152802][ T856] and interrupts could create inverse lock ordering between them. [ 86.152802][ T856] [ 86.153099][ T856] [ 86.153099][ T856] other info that might help us debug this: [ 86.153220][ T856] Possible interrupt unsafe locking scenario: [ 86.153220][ T856] [ 86.153350][ T856] CPU0 CPU1 [ 86.153429][ T856] ---- ---- [ 86.153509][ T856] lock(acaddr_hash_lock); [ 86.153591][ T856] local_irq_disable(); [ 86.153690][ T856] lock(&ndev->lock); [ 86.153791][ T856] lock(acaddr_hash_lock); [ 86.153893][ T856] [ 86.153954][ T856] lock(&ndev->lock); [ 86.154018][ T856] [ 86.154018][ T856] *** DEADLOCK *** [ 86.154018][ T856] [ 86.154135][ T856] 2 locks held by sysctl/856: [ 86.154215][ T856] #0: ff11000009b5c3e0 (sb_writers#3){.+.+}-{0:0}, at: ksys_write+0x116/0x250 [ 86.154408][ T856] #1: ffffffff9768c9c0 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_fixup_forwarding+0x4d/0x4d0 [ 86.154576][ T856] [ 86.154576][ T856] the shortest dependencies between 2nd lock and 1st lock: [ 86.154713][ T856] -> (&ndev->lock){++--}-{3:3} { [ 86.154798][ T856] HARDIRQ-ON-W at: [ 86.154860][ T856] __lock_acquire+0x378/0xc10 [ 86.154963][ T856] lock_acquire.part.0+0xbc/0x260 [ 86.155066][ T856] _raw_write_lock_bh+0x38/0x50 [ 86.155167][ T856] addrconf_permanent_addr+0x108/0x9c0 [ 86.155289][ T856] addrconf_notify+0x151/0xf30 [ 86.155397][ T856] notifier_call_chain+0xb0/0x320 [ 86.155497][ T856] __dev_notify_flags+0xde/0x280 [ 86.155602][ T856] netif_change_flags+0xfe/0x190 [ 86.155701][ T856] do_setlink.isra.0+0x1cc3/0x2750 [ 86.155804][ T856] rtnl_newlink+0x8d1/0xef0 [ 86.155905][ T856] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 86.156008][ T856] netlink_rcv_skb+0x14e/0x3a0 [ 86.156112][ T856] netlink_unicast+0x486/0x750 [ 86.156213][ T856] netlink_sendmsg+0x735/0xc60 [ 86.156319][ T856] ____sys_sendmsg+0x419/0x850 [ 86.156421][ T856] ___sys_sendmsg+0x14e/0x1d0 [ 86.156523][ T856] __sys_sendmsg+0x145/0x1f0 [ 86.156628][ T856] do_syscall_64+0x117/0x590 [ 86.156729][ T856] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 86.156851][ T856] HARDIRQ-ON-R at: [ 86.156913][ T856] __lock_acquire+0x378/0xc10 [ 86.157016][ T856] lock_acquire.part.0+0xbc/0x260 [ 86.157118][ T856] _raw_read_lock_bh+0x44/0x80 [ 86.157222][ T856] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 86.157350][ T856] inet6_fill_link_af+0x5c/0xe0 [ 86.157450][ T856] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 86.157571][ T856] rtnl_getlink+0x9c9/0xeb0 [ 86.157672][ T856] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 86.157775][ T856] netlink_rcv_skb+0x14e/0x3a0 [ 86.157877][ T856] netlink_unicast+0x486/0x750 [ 86.157979][ T856] netlink_sendmsg+0x735/0xc60 [ 86.158080][ T856] ____sys_sendmsg+0x419/0x850 [ 86.158183][ T856] ___sys_sendmsg+0x14e/0x1d0 [ 86.158288][ T856] __sys_sendmsg+0x145/0x1f0 [ 86.158395][ T856] do_syscall_64+0x117/0x590 [ 86.158494][ T856] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 86.158659][ T856] IN-SOFTIRQ-W at: [ 86.158720][ T856] __lock_acquire+0x378/0xc10 [ 86.158822][ T856] lock_acquire.part.0+0xbc/0x260 [ 86.158924][ T856] _raw_write_lock+0x33/0x40 [ 86.159068][ T856] addrconf_rs_timer+0xb0/0x770 [ 86.159167][ T856] call_timer_fn+0x163/0x4f0 [ 86.159268][ T856] __run_timers+0x68f/0xab0 [ 86.159415][ T856] run_timer_softirq+0xf0/0x160 [ 86.159517][ T856] handle_softirqs+0x1d8/0x940 [ 86.159618][ T856] __irq_exit_rcu+0x103/0x1c0 [ 86.159761][ T856] irq_exit_rcu+0xe/0x30 [ 86.159862][ T856] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 86.159984][ T856] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 86.160150][ T856] pv_native_safe_halt+0xf/0x10 [ 86.160252][ T856] default_idle+0x9/0x10 [ 86.160360][ T856] default_idle_call+0x6e/0xb0 [ 86.160505][ T856] cpuidle_idle_call.constprop.0+0x237/0x410 [ 86.160627][ T856] do_idle+0xf5/0x160 [ 86.160727][ T856] cpu_startup_entry+0x53/0x70 [ 86.160872][ T856] start_secondary+0x204/0x2b0 [ 86.160973][ T856] common_startup_64+0x13e/0x148 [ 86.161075][ T856] IN-SOFTIRQ-R at: [ 86.161136][ T856] __lock_acquire+0x378/0xc10 [ 86.161281][ T856] lock_acquire.part.0+0xbc/0x260 [ 86.161388][ T856] _raw_read_lock_bh+0x44/0x80 [ 86.161487][ T856] ipv6_get_lladdr+0xa8/0x3f0 [ 86.161631][ T856] addrconf_rs_timer+0x251/0x770 [ 86.161733][ T856] call_timer_fn+0x163/0x4f0 [ 86.161834][ T856] __run_timers+0x68f/0xab0 [ 86.161978][ T856] run_timer_softirq+0xf0/0x160 [ 86.162079][ T856] handle_softirqs+0x1d8/0x940 [ 86.162180][ T856] __irq_exit_rcu+0x103/0x1c0 [ 86.162327][ T856] irq_exit_rcu+0xe/0x30 [ 86.162426][ T856] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 86.162546][ T856] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 86.162710][ T856] pv_native_safe_halt+0xf/0x10 [ 86.162812][ T856] default_idle+0x9/0x10 [ 86.162913][ T856] default_idle_call+0x6e/0xb0 [ 86.163056][ T856] cpuidle_idle_call.constprop.0+0x237/0x410 [ 86.163175][ T856] do_idle+0xf5/0x160 [ 86.163276][ T856] cpu_startup_entry+0x53/0x70 [ 86.163423][ T856] start_secondary+0x204/0x2b0 [ 86.163524][ T856] common_startup_64+0x13e/0x148 [ 86.163624][ T856] INITIAL USE at: [ 86.163684][ T856] __lock_acquire+0x378/0xc10 [ 86.163828][ T856] lock_acquire.part.0+0xbc/0x260 [ 86.163928][ T856] _raw_write_lock_bh+0x38/0x50 [ 86.164028][ T856] addrconf_permanent_addr+0x108/0x9c0 [ 86.164191][ T856] addrconf_notify+0x151/0xf30 [ 86.164291][ T856] notifier_call_chain+0xb0/0x320 [ 86.164396][ T856] __dev_notify_flags+0xde/0x280 [ 86.164539][ T856] netif_change_flags+0xfe/0x190 [ 86.164639][ T856] do_setlink.isra.0+0x1cc3/0x2750 [ 86.164740][ T856] rtnl_newlink+0x8d1/0xef0 [ 86.164882][ T856] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 86.164982][ T856] netlink_rcv_skb+0x14e/0x3a0 [ 86.165082][ T856] netlink_unicast+0x486/0x750 [ 86.165223][ T856] netlink_sendmsg+0x735/0xc60 [ 86.165327][ T856] ____sys_sendmsg+0x419/0x850 [ 86.165427][ T856] ___sys_sendmsg+0x14e/0x1d0 [ 86.165526][ T856] __sys_sendmsg+0x145/0x1f0 [ 86.165669][ T856] do_syscall_64+0x117/0x590 [ 86.165770][ T856] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 86.165890][ T856] INITIAL READ USE at: [ 86.166014][ T856] __lock_acquire+0x378/0xc10 [ 86.166114][ T856] lock_acquire.part.0+0xbc/0x260 [ 86.166232][ T856] _raw_read_lock_bh+0x44/0x80 [ 86.166384][ T856] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 86.166505][ T856] inet6_fill_link_af+0x5c/0xe0 [ 86.166606][ T856] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 86.166768][ T856] rtnl_getlink+0x9c9/0xeb0 [ 86.166868][ T856] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 86.166971][ T856] netlink_rcv_skb+0x14e/0x3a0 [ 86.167115][ T856] netlink_unicast+0x486/0x750 [ 86.167216][ T856] netlink_sendmsg+0x735/0xc60 [ 86.167321][ T856] ____sys_sendmsg+0x419/0x850 [ 86.167465][ T856] ___sys_sendmsg+0x14e/0x1d0 [ 86.167566][ T856] __sys_sendmsg+0x145/0x1f0 [ 86.167665][ T856] do_syscall_64+0x117/0x590 [ 86.167808][ T856] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 86.167929][ T856] } [ 86.167972][ T856] ... key at: [] __key.37+0x0/0x40 [ 86.168095][ T856] ... acquired at: [ 86.168199][ T856] __lock_acquire+0x508/0xc10 [ 86.168280][ T856] lock_acquire.part.0+0xbc/0x260 [ 86.168366][ T856] _raw_spin_lock+0x33/0x40 [ 86.168446][ T856] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 86.168589][ T856] __ipv6_dev_ac_inc+0x57e/0x930 [ 86.168668][ T856] addrconf_join_anycast+0x1bc/0x260 [ 86.168749][ T856] __ipv6_ifa_notify+0x75b/0xad0 [ 86.168831][ T856] addrconf_dad_completed+0x14b/0xe10 [ 86.168953][ T856] addrconf_dad_work+0x3c1/0x930 [ 86.169034][ T856] process_one_work+0xdf8/0x1410 [ 86.169117][ T856] worker_thread+0x4f1/0xd60 [ 86.169197][ T856] kthread+0x367/0x460 [ 86.169300][ T856] ret_from_fork+0x474/0x6b0 [ 86.169385][ T856] ret_from_fork_asm+0x11/0x20 [ 86.169466][ T856] [ 86.169508][ T856] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 86.169633][ T856] HARDIRQ-ON-W at: [ 86.169694][ T856] __lock_acquire+0x378/0xc10 [ 86.169792][ T856] lock_acquire.part.0+0xbc/0x260 [ 86.169892][ T856] _raw_spin_lock+0x33/0x40 [ 86.170035][ T856] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 86.170156][ T856] __ipv6_dev_ac_inc+0x57e/0x930 [ 86.170257][ T856] addrconf_join_anycast+0x1bc/0x260 [ 86.170406][ T856] __ipv6_ifa_notify+0x75b/0xad0 [ 86.170507][ T856] addrconf_dad_completed+0x14b/0xe10 [ 86.170608][ T856] addrconf_dad_work+0x3c1/0x930 [ 86.170752][ T856] process_one_work+0xdf8/0x1410 [ 86.170852][ T856] worker_thread+0x4f1/0xd60 [ 86.170952][ T856] kthread+0x367/0x460 [ 86.171035][ T856] ret_from_fork+0x474/0x6b0 [ 86.171177][ T856] ret_from_fork_asm+0x11/0x20 [ 86.171279][ T856] SOFTIRQ-ON-W at: [ 86.171344][ T856] __lock_acquire+0x378/0xc10 [ 86.171486][ T856] lock_acquire.part.0+0xbc/0x260 [ 86.171585][ T856] _raw_spin_lock+0x33/0x40 [ 86.171684][ T856] __ipv6_dev_ac_dec+0x236/0x5d0 [ 86.171826][ T856] addrconf_leave_anycast+0x1bc/0x260 [ 86.171928][ T856] dev_forward_change+0x3b3/0x850 [ 86.172029][ T856] addrconf_fixup_forwarding+0x2af/0x4d0 [ 86.172193][ T856] addrconf_sysctl_forward+0x209/0x2b0 [ 86.172294][ T856] proc_sys_call_handler+0x31b/0x480 [ 86.172399][ T856] new_sync_write+0x333/0x750 [ 86.172501][ T856] vfs_write+0x6a4/0xc10 [ 86.172643][ T856] ksys_write+0x116/0x250 [ 86.172742][ T856] do_syscall_64+0x117/0x590 [ 86.172841][ T856] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 86.173005][ T856] INITIAL USE at: [ 86.173065][ T856] __lock_acquire+0x378/0xc10 [ 86.173165][ T856] lock_acquire.part.0+0xbc/0x260 [ 86.173309][ T856] _raw_spin_lock+0x33/0x40 [ 86.173413][ T856] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 86.173531][ T856] __ipv6_dev_ac_inc+0x57e/0x930 [ 86.173673][ T856] addrconf_join_anycast+0x1bc/0x260 [ 86.173772][ T856] __ipv6_ifa_notify+0x75b/0xad0 [ 86.173874][ T856] addrconf_dad_completed+0x14b/0xe10 [ 86.173974][ T856] addrconf_dad_work+0x3c1/0x930 [ 86.174078][ T856] process_one_work+0xdf8/0x1410 [ 86.174177][ T856] worker_thread+0x4f1/0xd60 [ 86.174277][ T856] kthread+0x367/0x460 [ 86.174405][ T856] ret_from_fork+0x474/0x6b0 [ 86.174504][ T856] ret_from_fork_asm+0x11/0x20 [ 86.174604][ T856] } [ 86.174645][ T856] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 86.174807][ T856] ... acquired at: [ 86.174865][ T856] mark_lock+0x1d7/0xa00 [ 86.174946][ T856] mark_usage+0x105/0x170 [ 86.175071][ T856] __lock_acquire+0x378/0xc10 [ 86.175151][ T856] lock_acquire.part.0+0xbc/0x260 [ 86.175230][ T856] _raw_spin_lock+0x33/0x40 [ 86.175310][ T856] __ipv6_dev_ac_dec+0x236/0x5d0 [ 86.175436][ T856] addrconf_leave_anycast+0x1bc/0x260 [ 86.175516][ T856] dev_forward_change+0x3b3/0x850 [ 86.175596][ T856] addrconf_fixup_forwarding+0x2af/0x4d0 [ 86.175697][ T856] addrconf_sysctl_forward+0x209/0x2b0 [ 86.175822][ T856] proc_sys_call_handler+0x31b/0x480 [ 86.175903][ T856] new_sync_write+0x333/0x750 [ 86.175984][ T856] vfs_write+0x6a4/0xc10 [ 86.176065][ T856] ksys_write+0x116/0x250 [ 86.176186][ T856] do_syscall_64+0x117/0x590 [ 86.176265][ T856] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 86.176374][ T856] [ 86.176413][ T856] [ 86.176413][ T856] stack backtrace: [ 86.176556][ T856] CPU: 2 UID: 0 PID: 856 Comm: sysctl Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 86.176559][ T856] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 86.176562][ T856] Call Trace: [ 86.176563][ T856] [ 86.176564][ T856] dump_stack_lvl+0x6f/0xa0 [ 86.176569][ T856] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 86.176572][ T856] mark_lock_irq+0x989/0x9c0 [ 86.176575][ T856] mark_lock+0x1d7/0xa00 [ 86.176576][ T856] mark_usage+0x105/0x170 [ 86.176578][ T856] __lock_acquire+0x378/0xc10 [ 86.176580][ T856] lock_acquire.part.0+0xbc/0x260 [ 86.176582][ T856] ? __ipv6_dev_ac_dec+0x236/0x5d0 [ 86.176584][ T856] ? rcu_is_watching+0x15/0xd0 [ 86.176587][ T856] ? do_raw_read_unlock+0x70/0x70 [ 86.176589][ T856] ? lock_acquire+0x134/0x160 [ 86.176591][ T856] _raw_spin_lock+0x33/0x40 [ 86.176592][ T856] ? __ipv6_dev_ac_dec+0x236/0x5d0 [ 86.176594][ T856] __ipv6_dev_ac_dec+0x236/0x5d0 [ 86.176596][ T856] addrconf_leave_anycast+0x1bc/0x260 [ 86.176598][ T856] ? find_held_lock+0x2b/0x80 [ 86.176601][ T856] ? __ipv6_isatap_ifid+0x210/0x210 [ 86.176603][ T856] ? mark_held_locks+0x40/0x70 [ 86.176604][ T856] ? lockdep_hardirqs_on+0x8c/0x130 [ 86.176607][ T856] dev_forward_change+0x3b3/0x850 [ 86.176609][ T856] ? addrconf_fixup_forwarding+0x4d/0x4d0 [ 86.176611][ T856] ? addrconf_sysctl_proxy_ndp+0x2f0/0x2f0 [ 86.176614][ T856] addrconf_fixup_forwarding+0x2af/0x4d0 [ 86.176616][ T856] addrconf_sysctl_forward+0x209/0x2b0 [ 86.176618][ T856] ? addrconf_fixup_forwarding+0x4d0/0x4d0 [ 86.176620][ T856] ? addrconf_fixup_forwarding+0x4d0/0x4d0 [ 86.176622][ T856] ? __kvmalloc_node_noprof+0x305/0x8a0 [ 86.176626][ T856] ? proc_sys_call_handler+0x25d/0x480 [ 86.176628][ T856] proc_sys_call_handler+0x31b/0x480 [ 86.176630][ T856] ? proc_sys_lookup+0x3d0/0x3d0 [ 86.176632][ T856] ? rcu_read_unlock+0x1b/0x70 [ 86.176635][ T856] ? do_raw_spin_unlock+0x59/0x250 [ 86.176636][ T856] ? rcu_lockdep_current_cpu_online+0x39/0x1b0 [ 86.176638][ T856] ? rcu_read_lock_any_held+0x3c/0x90 [ 86.176640][ T856] ? proc_sys_call_handler+0x480/0x480 [ 86.176642][ T856] new_sync_write+0x333/0x750 [ 86.176644][ T856] ? __lock_acquire+0x508/0xc10 [ 86.176645][ T856] ? new_sync_read+0x740/0x740 [ 86.176647][ T856] ? lock_acquire.part.0+0xbc/0x260 [ 86.176648][ T856] ? ksys_write+0x116/0x250 [ 86.176651][ T856] vfs_write+0x6a4/0xc10 [ 86.176653][ T856] ksys_write+0x116/0x250 [ 86.176654][ T856] ? __ia32_sys_read+0xc0/0xc0 [ 86.176656][ T856] ? rcu_is_watching+0x15/0xd0 [ 86.176657][ T856] ? rcu_is_watching+0x15/0xd0 [ 86.176659][ T856] do_syscall_64+0x117/0x590 [ 86.176660][ T856] ? trace_hardirqs_off+0xd/0x30 [ 86.176663][ T856] ? exc_page_fault+0xee/0x100 [ 86.176665][ T856] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 86.176667][ T856] RIP: 0033:0x7f7d62f4608e [ 86.176670][ T856] Code: 4d 89 d8 e8 94 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 [ 86.176672][ T856] RSP: 002b:00007ffebf431ce0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 86.176675][ T856] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f7d62f4608e [ 86.176676][ T856] RDX: 0000000000000002 RSI: 0000563cbff0a4b0 RDI: 0000000000000005 [ 86.176677][ T856] RBP: 00007ffebf431cf0 R08: 0000000000000000 R09: 0000000000000000 [ 86.176678][ T856] R10: 0000000000000000 R11: 0000000000000202 R12: 0000563cbff0c5e0 [ 86.176679][ T856] R13: 0000563cbff0a470 R14: 0000000000000002 R15: 0000000000000000 [ 86.176682][ T856] [ 86.298067][ T863] br1: port 1(veth1) entered disabled state [ 86.312257][ T864] veth1: left allmulticast mode [ 86.312422][ T864] veth1: left promiscuous mode [ 86.312629][ T864] br1: port 1(veth1) entered disabled state