[ 30.241560] bridge0: port 2(bridge_slave_1) entered disabled state [ 30.250530] device bridge_slave_0 left promiscuous mode [ 30.257916] bridge0: port 1(bridge_slave_0) entered disabled state [ 30.267996] device veth1_macvtap left promiscuous mode [ 30.274918] device veth0_macvtap left promiscuous mode [ 30.280234] device veth1_vlan left promiscuous mode [ 30.285995] device veth0_vlan left promiscuous mode [ 30.398918] bond0 (unregistering): Releasing backup interface bond_slave_1 [ 30.412699] bond0 (unregistering): Releasing backup interface bond_slave_0 [ 30.446032] bond0 (unregistering): Released all slaves Warning: Permanently added '10.128.15.207' (ECDSA) to the list of known hosts. 2021/01/16 12:49:51 parsed 1 programs 2021/01/16 12:49:51 executed programs: 0 [ 37.134615] IPv6: ADDRCONF(NETDEV_CHANGE): nr2: link becomes ready [ 37.155319] IPv6: ADDRCONF(NETDEV_CHANGE): nr0: link becomes ready [ 37.170003] IPv6: ADDRCONF(NETDEV_CHANGE): nr1: link becomes ready [ 37.182251] IPVS: Creating netns size=2712 id=2 [ 37.182305] IPVS: ftp: loaded support on port[0] = 21 [ 37.203220] IPv6: ADDRCONF(NETDEV_CHANGE): nr5: link becomes ready [ 37.213825] IPv6: ADDRCONF(NETDEV_CHANGE): nr3: link becomes ready [ 37.224731] IPv6: ADDRCONF(NETDEV_CHANGE): nr4: link becomes ready [ 37.269412] IPVS: Creating netns size=2712 id=3 [ 37.276349] IPVS: ftp: loaded support on port[0] = 21 [ 37.369170] chnl_net:caif_netlink_parms(): no params data found [ 37.377931] IPVS: Creating netns size=2712 id=4 [ 37.377995] IPVS: ftp: loaded support on port[0] = 21 [ 37.477364] IPVS: Creating netns size=2712 id=5 [ 37.501781] IPVS: ftp: loaded support on port[0] = 21 [ 37.567280] chnl_net:caif_netlink_parms(): no params data found [ 37.610692] bridge0: port 1(bridge_slave_0) entered blocking state [ 37.619805] bridge0: port 1(bridge_slave_0) entered disabled state [ 37.629032] device bridge_slave_0 entered promiscuous mode [ 37.667947] bridge0: port 2(bridge_slave_1) entered blocking state [ 37.675954] bridge0: port 2(bridge_slave_1) entered disabled state [ 37.686508] device bridge_slave_1 entered promiscuous mode [ 37.746425] IPVS: Creating netns size=2712 id=6 [ 37.762803] IPVS: ftp: loaded support on port[0] = 21 [ 37.788553] chnl_net:caif_netlink_parms(): no params data found [ 37.803564] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 37.825831] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 37.952054] chnl_net:caif_netlink_parms(): no params data found [ 37.989046] bridge0: port 1(bridge_slave_0) entered blocking state [ 37.996240] bridge0: port 1(bridge_slave_0) entered disabled state [ 38.004342] device bridge_slave_0 entered promiscuous mode [ 38.011816] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.018729] bridge0: port 2(bridge_slave_1) entered disabled state [ 38.027707] device bridge_slave_1 entered promiscuous mode [ 38.096738] batman_adv: Unable to register the batman interface 'batadv0': -12 [ 38.133467] batman_adv: Unable to register the batman interface 'batadv0': -12 [ 38.143696] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 38.153281] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.163201] bridge0: port 1(bridge_slave_0) entered disabled state [ 38.171728] device bridge_slave_0 entered promiscuous mode [ 38.178712] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 38.202610] IPVS: Creating netns size=2712 id=7 [ 38.207727] IPVS: ftp: loaded support on port[0] = 21 [ 38.219144] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 38.227938] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.234540] bridge0: port 2(bridge_slave_1) entered disabled state [ 38.243167] device bridge_slave_1 entered promiscuous mode [ 38.250580] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 38.399278] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 38.437798] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 38.469654] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.476510] bridge0: port 1(bridge_slave_0) entered disabled state [ 38.485552] device bridge_slave_0 entered promiscuous mode [ 38.493841] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 38.525435] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.532032] bridge0: port 2(bridge_slave_1) entered disabled state [ 38.540787] device bridge_slave_1 entered promiscuous mode [ 38.547444] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 38.604101] chnl_net:caif_netlink_parms(): no params data found [ 38.676448] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 38.685800] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 38.711924] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 38.734769] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 38.780161] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 38.821393] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 38.929985] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 38.940719] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 38.949775] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 38.991797] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 39.010373] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 39.035149] chnl_net:caif_netlink_parms(): no params data found [ 39.058110] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 39.115676] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.123843] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.132517] device bridge_slave_0 entered promiscuous mode [ 39.174961] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.183052] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.192016] device bridge_slave_1 entered promiscuous mode [ 39.263743] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 39.289276] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 39.298238] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 39.309139] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 39.334930] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 39.416835] ------------[ cut here ]------------ [ 39.423811] WARNING: CPU: 1 PID: 7916 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x7b/0xa0 [ 39.432214] sysfs: cannot create duplicate filename '/class/macvtap/tap50' [ 39.439397] Kernel panic - not syncing: panic_on_warn set ... [ 39.439397] [ 39.447095] CPU: 1 PID: 7916 Comm: syz-executor.1 Not tainted 4.6.0-syzkaller #0 [ 39.455075] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.464933] 0000000000000000 ffff8800b1226fc8 ffffffff82da4dd2 ffffffff8667aec0 [ 39.473480] ffff8800b12270a0 ffffffff8672c8c0 ffffffff818db72b 0000000000000009 [ 39.482059] ffff8800b1227090 ffffffff815c7a54 0000000041b58ab3 ffffffff87779893 [ 39.490167] Call Trace: [ 39.492746] [] dump_stack+0x136/0x1d4 [ 39.498528] [] ? sysfs_warn_dup+0x7b/0xa0 [ 39.504747] [] panic+0x1af/0x348 [ 39.510695] [] ? to_vmem_altmap+0x125/0x125 [ 39.516833] [] ? sysfs_warn_dup+0x7b/0xa0 [ 39.522689] [] __warn+0x18d/0x1b0 [ 39.527777] [] warn_slowpath_fmt+0x92/0xb0 [ 39.533863] [] ? __warn+0x1b0/0x1b0 [ 39.539384] [] ? kernfs_path_from_node+0x4a/0x60 [ 39.546134] [] sysfs_warn_dup+0x7b/0xa0 [ 39.551820] [] sysfs_do_create_link_sd.isra.0+0xd1/0xf0 [ 39.559222] [] sysfs_create_link+0x43/0xb0 [ 39.565169] [] device_add+0x6a1/0x1400 [ 39.571319] [] ? device_private_init+0x180/0x180 [ 39.577797] [] ? kfree_const+0x1d/0x20 [ 39.583669] [] ? kobject_set_name_vargs+0xb4/0x130 [ 39.590688] [] device_create_groups_vargs+0x1c8/0x220 [ 39.598558] [] device_create+0x88/0xa0 [ 39.604087] [] ? device_create_vargs+0x20/0x20 [ 39.610689] [] ? macvlan_set_mac_address+0x150/0x150 [ 39.617883] [] macvtap_device_event+0x1c4/0x2a0 [ 39.624198] [] notifier_call_chain+0x8b/0x170 [ 39.630599] [] raw_notifier_call_chain+0x11/0x20 [ 39.637001] [] call_netdevice_notifiers_info+0x47/0x80 [ 39.644361] [] register_netdevice+0x8e8/0xd00 [ 39.650893] [] ? netdev_change_features+0x80/0x80 [ 39.657468] [] ? dev_get_nest_level+0x10c/0x1a0 [ 39.664917] [] macvlan_common_newlink+0x8b9/0x1090 [ 39.671778] [] macvtap_newlink+0xbf/0x110 [ 39.677817] [] ? __netlink_ns_capable+0xc7/0xf0 [ 39.684653] [] rtnl_newlink+0xd4b/0x1230 [ 39.690701] [] ? rtnl_link_ops_get+0x5d/0x90 [ 39.697031] [] ? rtnl_newlink+0x319/0x1230 [ 39.702985] [] ? load_balance+0xc07/0x1ee0 [ 39.709365] [] ? rtnl_setlink+0x2f0/0x2f0 [ 39.715449] [] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 39.722633] [] ? __netlink_ns_capable+0xc7/0xf0 [ 39.729101] [] rtnetlink_rcv_msg+0x222/0x680 [ 39.735950] [] ? rtnetlink_rcv+0x30/0x30 [ 39.742024] [] ? mutex_lock_nested+0x5fd/0xb30 [ 39.748497] [] ? rtnetlink_rcv+0x16/0x30 [ 39.755485] [] ? netlink_seq_start+0xe0/0xe0 [ 39.761977] [] netlink_rcv_skb+0x242/0x350 [ 39.768049] [] ? rtnetlink_rcv+0x30/0x30 [ 39.774720] [] rtnetlink_rcv+0x25/0x30 [ 39.780660] [] netlink_unicast+0x3da/0x560 [ 39.786704] [] ? netlink_sendskb+0x40/0x40 [ 39.792655] [] netlink_sendmsg+0x9bb/0xb40 [ 39.798720] [] ? nlmsg_notify+0xf0/0xf0 [ 39.804499] [] ? __might_fault+0xf1/0x1b0 [ 39.810474] [] ? security_socket_sendmsg+0x6a/0xa0 [ 39.817584] [] ? nlmsg_notify+0xf0/0xf0 [ 39.823927] [] sock_sendmsg+0xb5/0xf0 [ 39.829726] [] SyS_sendto+0x1ca/0x290 [ 39.835505] [] ? SyS_getpeername+0x240/0x240 [ 39.842703] [] ? mntput_no_expire+0xce/0x600 [ 39.849419] [] ? mnt_get_count+0x1c0/0x1c0 [ 39.855470] [] ? mntput+0x52/0x70 [ 39.860625] [] ? task_work_run+0x14a/0x200 [ 39.866772] [] ? trace_hardirqs_off+0xd/0x10 [ 39.873118] [] ? exit_to_usermode_loop+0x112/0x1c0 [ 39.879762] [] ? trace_hardirqs_on_thunk+0x1b/0x1d [ 39.886598] [] entry_SYSCALL_64_fastpath+0x23/0xc1 [ 39.893486] Kernel Offset: disabled