[ 27.977962] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.986655] device bridge_slave_0 left promiscuous mode [ 27.994009] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.003339] device veth1_macvtap left promiscuous mode [ 28.009057] device veth0_macvtap left promiscuous mode [ 28.015396] device veth1_vlan left promiscuous mode [ 28.021416] device veth0_vlan left promiscuous mode [ 28.116242] bond0 (unregistering): Releasing backup interface bond_slave_1 [ 28.132075] bond0 (unregistering): Releasing backup interface bond_slave_0 [ 28.164100] bond0 (unregistering): Released all slaves Warning: Permanently added '10.128.10.58' (ECDSA) to the list of known hosts. 2021/01/16 23:39:58 parsed 1 programs 2021/01/16 23:39:58 executed programs: 0 [ 34.824532] IPv6: ADDRCONF(NETDEV_CHANGE): nr2: link becomes ready [ 34.848310] IPv6: ADDRCONF(NETDEV_CHANGE): nr4: link becomes ready [ 34.856244] IPv6: ADDRCONF(NETDEV_CHANGE): nr5: link becomes ready [ 34.864308] IPv6: ADDRCONF(NETDEV_CHANGE): nr1: link becomes ready [ 34.871919] IPv6: ADDRCONF(NETDEV_CHANGE): nr0: link becomes ready [ 34.883124] IPv6: ADDRCONF(NETDEV_CHANGE): nr3: link becomes ready [ 34.887183] IPVS: Creating netns size=2712 id=2 [ 34.887235] IPVS: ftp: loaded support on port[0] = 21 [ 34.946381] IPVS: Creating netns size=2712 id=3 [ 34.951265] IPVS: ftp: loaded support on port[0] = 21 [ 35.034720] chnl_net:caif_netlink_parms(): no params data found [ 35.065385] IPVS: Creating netns size=2712 id=4 [ 35.070396] IPVS: ftp: loaded support on port[0] = 21 [ 35.186838] chnl_net:caif_netlink_parms(): no params data found [ 35.223128] IPVS: Creating netns size=2712 id=5 [ 35.231321] IPVS: ftp: loaded support on port[0] = 21 [ 35.287364] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.295574] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.304781] device bridge_slave_0 entered promiscuous mode [ 35.312647] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.319724] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.329402] device bridge_slave_1 entered promiscuous mode [ 35.425060] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 35.448350] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 35.497276] chnl_net:caif_netlink_parms(): no params data found [ 35.519599] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.526932] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.536414] device bridge_slave_0 entered promiscuous mode [ 35.554077] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.555900] IPVS: Creating netns size=2712 id=6 [ 35.555960] IPVS: ftp: loaded support on port[0] = 21 [ 35.578791] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.587512] device bridge_slave_1 entered promiscuous mode [ 35.695092] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 35.738504] batman_adv: Unable to register the batman interface 'batadv0': -12 [ 35.747627] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 35.785611] batman_adv: Unable to register the batman interface 'batadv0': -12 [ 35.808415] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 35.818419] IPVS: Creating netns size=2712 id=7 [ 35.818485] IPVS: ftp: loaded support on port[0] = 21 [ 35.838958] chnl_net:caif_netlink_parms(): no params data found [ 35.854360] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 35.968328] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 36.036765] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 36.046271] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 36.086261] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 36.110661] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.118524] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.127529] device bridge_slave_0 entered promiscuous mode [ 36.153950] chnl_net:caif_netlink_parms(): no params data found [ 36.169102] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.176084] bridge0: port 2(bridge_slave_1) entered disabled state [ 36.184481] device bridge_slave_1 entered promiscuous mode [ 36.267728] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 36.278551] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 36.311369] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 36.319121] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 36.338360] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.346148] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.355128] device bridge_slave_0 entered promiscuous mode [ 36.397852] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.404918] bridge0: port 2(bridge_slave_1) entered disabled state [ 36.414146] device bridge_slave_1 entered promiscuous mode [ 36.542531] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 36.584894] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 36.695635] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 36.716936] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.724534] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.733930] device bridge_slave_0 entered promiscuous mode [ 36.752813] chnl_net:caif_netlink_parms(): no params data found [ 36.765168] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 36.782090] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.788956] bridge0: port 2(bridge_slave_1) entered disabled state [ 36.799056] device bridge_slave_1 entered promiscuous mode [ 36.903738] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 36.914219] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 36.945454] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 36.965037] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 36.973575] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 36.991665] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 37.015679] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 37.081020] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 37.152959] bridge0: port 1(bridge_slave_0) entered blocking state [ 37.160352] bridge0: port 1(bridge_slave_0) entered disabled state [ 37.168840] device bridge_slave_0 entered promiscuous mode [ 37.178613] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 37.186977] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 37.201642] bridge0: port 2(bridge_slave_1) entered blocking state [ 37.208250] bridge0: port 2(bridge_slave_1) entered disabled state [ 37.217089] device bridge_slave_1 entered promiscuous mode [ 37.232563] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 37.241129] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 37.349795] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 37.394000] ------------[ cut here ]------------ [ 37.400317] WARNING: CPU: 1 PID: 7916 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x7b/0xa0 [ 37.409039] sysfs: cannot create duplicate filename '/class/macvtap/tap50' [ 37.416348] Kernel panic - not syncing: panic_on_warn set ... [ 37.416348] [ 37.425051] CPU: 1 PID: 7916 Comm: syz-executor.5 Not tainted 4.6.0-syzkaller #0 [ 37.433495] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.443450] 0000000000000000 ffff8801383d6fc8 ffffffff82da4dd2 ffffffff8667aec0 [ 37.452050] ffff8801383d70a0 ffffffff8672c8c0 ffffffff818db72b 0000000000000009 [ 37.460456] ffff8801383d7090 ffffffff815c7a54 0000000041b58ab3 ffffffff87779893 [ 37.469086] Call Trace: [ 37.471834] [] dump_stack+0x136/0x1d4 [ 37.477267] [] ? sysfs_warn_dup+0x7b/0xa0 [ 37.483136] [] panic+0x1af/0x348 [ 37.488361] [] ? to_vmem_altmap+0x125/0x125 [ 37.494686] [] ? sysfs_warn_dup+0x7b/0xa0 [ 37.500580] [] __warn+0x18d/0x1b0 [ 37.505867] [] warn_slowpath_fmt+0x92/0xb0 [ 37.512707] [] ? __warn+0x1b0/0x1b0 [ 37.518212] [] ? kernfs_path_from_node+0x4a/0x60 [ 37.524930] [] sysfs_warn_dup+0x7b/0xa0 [ 37.530741] [] sysfs_do_create_link_sd.isra.0+0xd1/0xf0 [ 37.537988] [] sysfs_create_link+0x43/0xb0 [ 37.544501] [] device_add+0x6a1/0x1400 [ 37.550029] [] ? device_private_init+0x180/0x180 [ 37.556769] [] ? kfree_const+0x1d/0x20 [ 37.562964] [] ? kobject_set_name_vargs+0xb4/0x130 [ 37.570543] [] device_create_groups_vargs+0x1c8/0x220 [ 37.577586] [] device_create+0x88/0xa0 [ 37.583189] [] ? device_create_vargs+0x20/0x20 [ 37.589828] [] ? macvlan_set_mac_address+0x150/0x150 [ 37.597119] [] macvtap_device_event+0x1c4/0x2a0 [ 37.603598] [] notifier_call_chain+0x8b/0x170 [ 37.609920] [] raw_notifier_call_chain+0x11/0x20 [ 37.616810] [] call_netdevice_notifiers_info+0x47/0x80 [ 37.623984] [] register_netdevice+0x8e8/0xd00 [ 37.630496] [] ? netdev_change_features+0x80/0x80 [ 37.637783] [] ? dev_get_nest_level+0x10c/0x1a0 [ 37.644558] [] macvlan_common_newlink+0x8b9/0x1090 [ 37.651929] [] macvtap_newlink+0xbf/0x110 [ 37.657818] [] ? __netlink_ns_capable+0xc7/0xf0 [ 37.664718] [] rtnl_newlink+0xd4b/0x1230 [ 37.670991] [] ? rtnl_link_ops_get+0x5d/0x90 [ 37.677426] [] ? rtnl_newlink+0x319/0x1230 [ 37.683397] [] ? rtnl_setlink+0x2f0/0x2f0 [ 37.689311] [] ? cpuacct_charge+0x189/0x300 [ 37.695452] [] ? cpuacct_css_alloc+0x160/0x160 [ 37.701855] [] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 37.709189] [] ? __netlink_ns_capable+0xc7/0xf0 [ 37.715618] [] rtnetlink_rcv_msg+0x222/0x680 [ 37.721943] [] ? rtnetlink_rcv+0x30/0x30 [ 37.728001] [] ? mutex_lock_nested+0x5fd/0xb30 [ 37.734381] [] ? rtnetlink_rcv+0x16/0x30 [ 37.740364] [] ? netlink_seq_start+0xe0/0xe0 [ 37.746515] [] netlink_rcv_skb+0x242/0x350 [ 37.752859] [] ? rtnetlink_rcv+0x30/0x30 [ 37.758729] [] rtnetlink_rcv+0x25/0x30 [ 37.764825] [] netlink_unicast+0x3da/0x560 [ 37.770815] [] ? netlink_sendskb+0x40/0x40 [ 37.777042] [] netlink_sendmsg+0x9bb/0xb40 [ 37.783097] [] ? nlmsg_notify+0xf0/0xf0 [ 37.789119] [] ? __might_fault+0xf1/0x1b0 [ 37.795513] [] ? security_socket_sendmsg+0x6a/0xa0 [ 37.802683] [] ? nlmsg_notify+0xf0/0xf0 [ 37.809251] [] sock_sendmsg+0xb5/0xf0 [ 37.815195] [] SyS_sendto+0x1ca/0x290 [ 37.821149] [] ? SyS_getpeername+0x240/0x240 [ 37.827578] [] ? mntput_no_expire+0xce/0x600 [ 37.834537] [] ? mnt_get_count+0x1c0/0x1c0 [ 37.840415] [] ? mntput+0x52/0x70 [ 37.845811] [] ? task_work_run+0x14a/0x200 [ 37.851887] [] ? trace_hardirqs_off+0xd/0x10 [ 37.858078] [] ? exit_to_usermode_loop+0x112/0x1c0 [ 37.865073] [] ? trace_hardirqs_on_thunk+0x1b/0x1d [ 37.871636] [] entry_SYSCALL_64_fastpath+0x23/0xc1 [ 37.880033] Kernel Offset: disabled