[ 31.692356] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.700628] device bridge_slave_0 left promiscuous mode [ 31.708260] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.717961] device veth1_macvtap left promiscuous mode [ 31.725183] device veth0_macvtap left promiscuous mode [ 31.730749] device veth1_vlan left promiscuous mode [ 31.737161] device veth0_vlan left promiscuous mode [ 31.864018] bond0 (unregistering): Releasing backup interface bond_slave_1 [ 31.877344] bond0 (unregistering): Releasing backup interface bond_slave_0 [ 31.909579] bond0 (unregistering): Released all slaves Warning: Permanently added '10.128.0.239' (ECDSA) to the list of known hosts. 2021/01/15 16:01:29 parsed 1 programs 2021/01/15 16:01:29 executed programs: 0 [ 38.647241] IPv6: ADDRCONF(NETDEV_CHANGE): nr2: link becomes ready [ 38.657932] IPv6: ADDRCONF(NETDEV_CHANGE): nr4: link becomes ready [ 38.672887] IPv6: ADDRCONF(NETDEV_CHANGE): nr3: link becomes ready [ 38.682409] IPv6: ADDRCONF(NETDEV_CHANGE): nr5: link becomes ready [ 38.698622] IPv6: ADDRCONF(NETDEV_CHANGE): nr1: link becomes ready [ 38.707646] IPVS: Creating netns size=2712 id=2 [ 38.710604] IPv6: ADDRCONF(NETDEV_CHANGE): nr0: link becomes ready [ 38.722175] IPVS: ftp: loaded support on port[0] = 21 [ 38.777214] IPVS: Creating netns size=2712 id=3 [ 38.790318] IPVS: ftp: loaded support on port[0] = 21 [ 38.868155] chnl_net:caif_netlink_parms(): no params data found [ 38.909216] IPVS: Creating netns size=2712 id=4 [ 38.915294] IPVS: ftp: loaded support on port[0] = 21 [ 39.036894] chnl_net:caif_netlink_parms(): no params data found [ 39.067530] IPVS: Creating netns size=2712 id=5 [ 39.078576] IPVS: ftp: loaded support on port[0] = 21 [ 39.134820] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.142098] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.152168] device bridge_slave_0 entered promiscuous mode [ 39.163308] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.171633] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.181601] device bridge_slave_1 entered promiscuous mode [ 39.280087] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 39.309005] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 39.324863] chnl_net:caif_netlink_parms(): no params data found [ 39.362721] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.369367] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.373921] IPVS: Creating netns size=2712 id=6 [ 39.373985] IPVS: ftp: loaded support on port[0] = 21 [ 39.396360] device bridge_slave_0 entered promiscuous mode [ 39.425554] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.432726] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.441527] device bridge_slave_1 entered promiscuous mode [ 39.545506] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 39.554706] batman_adv: Unable to register the batman interface 'batadv0': -12 [ 39.563067] batman_adv: Unable to register the batman interface 'batadv0': -12 [ 39.606992] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 39.628310] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 39.659201] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 39.690944] IPVS: Creating netns size=2712 id=7 [ 39.696057] IPVS: ftp: loaded support on port[0] = 21 [ 39.759038] chnl_net:caif_netlink_parms(): no params data found [ 39.811983] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 39.819662] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.828288] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.837169] device bridge_slave_0 entered promiscuous mode [ 39.849879] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 39.907083] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.914022] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.923170] device bridge_slave_1 entered promiscuous mode [ 39.964427] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 39.973034] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 40.005890] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 40.056381] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 40.126494] chnl_net:caif_netlink_parms(): no params data found [ 40.138799] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 40.158585] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 40.368194] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.376331] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.386020] device bridge_slave_0 entered promiscuous mode [ 40.394544] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 40.402930] chnl_net:caif_netlink_parms(): no params data found [ 40.427531] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.435067] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.443649] device bridge_slave_1 entered promiscuous mode [ 40.461910] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 40.523194] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 40.534388] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 40.576271] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 40.624448] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 40.633931] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 40.692978] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.701135] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.708879] device bridge_slave_0 entered promiscuous mode [ 40.736660] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.743948] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.752784] device bridge_slave_1 entered promiscuous mode [ 40.830760] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.837427] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.846761] device bridge_slave_0 entered promiscuous mode [ 40.854640] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 40.882668] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.889512] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.897564] device bridge_slave_1 entered promiscuous mode [ 40.905410] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 40.926539] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 40.976490] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 40.997429] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 41.047061] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 41.056132] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 41.097505] ------------[ cut here ]------------ [ 41.103011] WARNING: CPU: 1 PID: 7901 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x7b/0xa0 [ 41.112597] sysfs: cannot create duplicate filename '/class/macvtap/tap50' [ 41.119967] Kernel panic - not syncing: panic_on_warn set ... [ 41.119967] [ 41.127781] CPU: 1 PID: 7901 Comm: syz-executor.4 Not tainted 4.6.0-syzkaller #0 [ 41.135857] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.146210] 0000000000000000 ffff8800b1bc6fc8 ffffffff82da4dd2 ffffffff8667aec0 [ 41.154549] ffff8800b1bc70a0 ffffffff8672c8c0 ffffffff818db72b 0000000000000009 [ 41.162714] ffff8800b1bc7090 ffffffff815c7a54 0000000041b58ab3 ffffffff87779893 [ 41.171132] Call Trace: [ 41.173794] [] dump_stack+0x136/0x1d4 [ 41.179236] [] ? sysfs_warn_dup+0x7b/0xa0 [ 41.185388] [] panic+0x1af/0x348 [ 41.192634] [] ? to_vmem_altmap+0x125/0x125 [ 41.198889] [] ? sysfs_warn_dup+0x7b/0xa0 [ 41.204843] [] __warn+0x18d/0x1b0 [ 41.209926] [] warn_slowpath_fmt+0x92/0xb0 [ 41.215933] [] ? __warn+0x1b0/0x1b0 [ 41.221904] [] ? kernfs_path_from_node+0x4a/0x60 [ 41.228462] [] sysfs_warn_dup+0x7b/0xa0 [ 41.234329] [] sysfs_do_create_link_sd.isra.0+0xd1/0xf0 [ 41.242269] [] sysfs_create_link+0x43/0xb0 [ 41.248751] [] device_add+0x6a1/0x1400 [ 41.254509] [] ? device_private_init+0x180/0x180 [ 41.261337] [] ? kfree_const+0x1d/0x20 [ 41.267135] [] ? kobject_set_name_vargs+0xb4/0x130 [ 41.273985] [] device_create_groups_vargs+0x1c8/0x220 [ 41.281157] [] device_create+0x88/0xa0 [ 41.287034] [] ? device_create_vargs+0x20/0x20 [ 41.293918] [] ? macvlan_set_mac_address+0x150/0x150 [ 41.300762] [] macvtap_device_event+0x1c4/0x2a0 [ 41.308121] [] notifier_call_chain+0x8b/0x170 [ 41.314510] [] raw_notifier_call_chain+0x11/0x20 [ 41.321087] [] call_netdevice_notifiers_info+0x47/0x80 [ 41.328229] [] register_netdevice+0x8e8/0xd00 [ 41.335040] [] ? netdev_change_features+0x80/0x80 [ 41.341624] [] ? dev_get_nest_level+0x10c/0x1a0 [ 41.348471] [] macvlan_common_newlink+0x8b9/0x1090 [ 41.355037] [] macvtap_newlink+0xbf/0x110 [ 41.360817] [] ? __netlink_ns_capable+0xc7/0xf0 [ 41.367469] [] rtnl_newlink+0xd4b/0x1230 [ 41.373628] [] ? rtnl_link_ops_get+0x5d/0x90 [ 41.379926] [] ? rtnl_newlink+0x319/0x1230 [ 41.386223] [] ? __enqueue_entity+0x134/0x230 [ 41.392359] [] ? rtnl_setlink+0x2f0/0x2f0 [ 41.398501] [] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 41.405677] [] ? __module_text_address+0x13/0x150 [ 41.412333] [] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 41.419913] [] ? deactivate_slab+0x74b/0x790 [ 41.425958] [] ? do_raw_spin_unlock+0x163/0x250 [ 41.432353] [] ? deactivate_slab+0x74b/0x790 [ 41.438577] [] ? __netlink_ns_capable+0xc7/0xf0 [ 41.445258] [] rtnetlink_rcv_msg+0x222/0x680 [ 41.451581] [] ? rtnetlink_rcv+0x30/0x30 [ 41.457524] [] ? mutex_lock_nested+0x5fd/0xb30 [ 41.464596] [] ? rtnetlink_rcv+0x16/0x30 [ 41.470740] [] ? netlink_seq_start+0xe0/0xe0 [ 41.476980] [] ? netlink_deliver_tap+0x73/0x850 [ 41.483921] [] netlink_rcv_skb+0x242/0x350 [ 41.490299] [] ? rtnetlink_rcv+0x30/0x30 [ 41.495989] [] rtnetlink_rcv+0x25/0x30 [ 41.501721] [] netlink_unicast+0x3da/0x560 [ 41.507677] [] ? netlink_sendskb+0x40/0x40 [ 41.513552] [] netlink_sendmsg+0x9bb/0xb40 [ 41.519523] [] ? nlmsg_notify+0xf0/0xf0 [ 41.525315] [] ? __might_fault+0xf1/0x1b0 [ 41.531805] [] ? security_socket_sendmsg+0x6a/0xa0 [ 41.539931] [] ? nlmsg_notify+0xf0/0xf0 [ 41.546005] [] sock_sendmsg+0xb5/0xf0 [ 41.551863] [] SyS_sendto+0x1ca/0x290 [ 41.557653] [] ? SyS_getpeername+0x240/0x240 [ 41.563890] [] ? mntput_no_expire+0xce/0x600 [ 41.570317] [] ? mnt_get_count+0x1c0/0x1c0 [ 41.576604] [] ? mntput+0x52/0x70 [ 41.582143] [] ? task_work_run+0x14a/0x200 [ 41.588185] [] ? trace_hardirqs_off+0xd/0x10 [ 41.594664] [] ? exit_to_usermode_loop+0x112/0x1c0 [ 41.601930] [] ? trace_hardirqs_on_thunk+0x1b/0x1d [ 41.609303] [] entry_SYSCALL_64_fastpath+0x23/0xc1 [ 41.618285] Kernel Offset: disabled