[ 31.893436] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.902773] device bridge_slave_0 left promiscuous mode [ 31.908846] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.918313] device veth1_macvtap left promiscuous mode [ 31.924029] device veth0_macvtap left promiscuous mode [ 31.929570] device veth1_vlan left promiscuous mode [ 31.935822] device veth0_vlan left promiscuous mode [ 32.036099] bond0 (unregistering): Releasing backup interface bond_slave_1 [ 32.052303] bond0 (unregistering): Releasing backup interface bond_slave_0 [ 32.084816] bond0 (unregistering): Released all slaves Warning: Permanently added '10.128.10.40' (ECDSA) to the list of known hosts. 2021/01/15 05:30:38 parsed 1 programs 2021/01/15 05:30:38 executed programs: 0 [ 39.000240] IPv6: ADDRCONF(NETDEV_CHANGE): nr0: link becomes ready [ 39.010620] IPv6: ADDRCONF(NETDEV_CHANGE): nr2: link becomes ready [ 39.029691] IPv6: ADDRCONF(NETDEV_CHANGE): nr1: link becomes ready [ 39.041174] IPVS: Creating netns size=2712 id=2 [ 39.041239] IPVS: ftp: loaded support on port[0] = 21 [ 39.057483] IPv6: ADDRCONF(NETDEV_CHANGE): nr3: link becomes ready [ 39.066858] IPv6: ADDRCONF(NETDEV_CHANGE): nr5: link becomes ready [ 39.078005] IPv6: ADDRCONF(NETDEV_CHANGE): nr4: link becomes ready [ 39.121501] IPVS: Creating netns size=2712 id=3 [ 39.127085] IPVS: ftp: loaded support on port[0] = 21 [ 39.214813] chnl_net:caif_netlink_parms(): no params data found [ 39.241626] IPVS: Creating netns size=2712 id=4 [ 39.254911] IPVS: ftp: loaded support on port[0] = 21 [ 39.384304] IPVS: Creating netns size=2712 id=5 [ 39.393235] IPVS: ftp: loaded support on port[0] = 21 [ 39.394587] chnl_net:caif_netlink_parms(): no params data found [ 39.516862] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.523616] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.531450] device bridge_slave_0 entered promiscuous mode [ 39.549931] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.557217] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.565875] device bridge_slave_1 entered promiscuous mode [ 39.606424] chnl_net:caif_netlink_parms(): no params data found [ 39.619022] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 39.641891] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 39.662740] IPVS: Creating netns size=2712 id=6 [ 39.667813] IPVS: ftp: loaded support on port[0] = 21 [ 39.673540] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.673590] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.675811] device bridge_slave_0 entered promiscuous mode [ 39.677378] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.677415] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.679565] device bridge_slave_1 entered promiscuous mode [ 39.788310] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 39.816357] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 39.904517] batman_adv: Unable to register the batman interface 'batadv0': -12 [ 39.926088] batman_adv: Unable to register the batman interface 'batadv0': -12 [ 39.944167] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 39.966664] IPVS: Creating netns size=2712 id=7 [ 39.972350] IPVS: ftp: loaded support on port[0] = 21 [ 39.993938] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 40.027502] chnl_net:caif_netlink_parms(): no params data found [ 40.067902] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.075149] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.084061] device bridge_slave_0 entered promiscuous mode [ 40.092163] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.098810] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.106975] device bridge_slave_1 entered promiscuous mode [ 40.185809] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 40.200111] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 40.209490] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 40.248846] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 40.273453] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 40.293530] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 40.417501] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 40.485265] chnl_net:caif_netlink_parms(): no params data found [ 40.496895] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 40.577775] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.584699] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.593823] device bridge_slave_0 entered promiscuous mode [ 40.600670] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.607733] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.616906] device bridge_slave_1 entered promiscuous mode [ 40.629226] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 40.642120] chnl_net:caif_netlink_parms(): no params data found [ 40.675905] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 40.720080] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 40.765834] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 40.826240] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 40.859221] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 40.951621] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 41.021761] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.028324] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.037748] device bridge_slave_0 entered promiscuous mode [ 41.070455] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.077366] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.085957] device bridge_slave_1 entered promiscuous mode [ 41.094078] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 41.129531] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 41.192323] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.199216] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.208540] device bridge_slave_0 entered promiscuous mode [ 41.220420] ------------[ cut here ]------------ [ 41.226445] WARNING: CPU: 0 PID: 7908 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x7b/0xa0 [ 41.234798] sysfs: cannot create duplicate filename '/class/macvtap/tap50' [ 41.242334] Kernel panic - not syncing: panic_on_warn set ... [ 41.242334] [ 41.249891] CPU: 0 PID: 7908 Comm: syz-executor.1 Not tainted 4.6.0-syzkaller #0 [ 41.258272] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.268187] 0000000000000000 ffff880136a26fc8 ffffffff82da4dd2 ffffffff8667aec0 [ 41.276289] ffff880136a270a0 ffffffff8672c8c0 ffffffff818db72b 0000000000000009 [ 41.284822] ffff880136a27090 ffffffff815c7a54 0000000041b58ab3 ffffffff87779893 [ 41.293188] Call Trace: [ 41.295762] [] dump_stack+0x136/0x1d4 [ 41.301540] [] ? sysfs_warn_dup+0x7b/0xa0 [ 41.307389] [] panic+0x1af/0x348 [ 41.312670] [] ? to_vmem_altmap+0x125/0x125 [ 41.318644] [] ? sysfs_warn_dup+0x7b/0xa0 [ 41.324517] [] __warn+0x18d/0x1b0 [ 41.329735] [] warn_slowpath_fmt+0x92/0xb0 [ 41.335843] [] ? __warn+0x1b0/0x1b0 [ 41.341101] [] ? kernfs_path_from_node+0x4a/0x60 [ 41.347906] [] sysfs_warn_dup+0x7b/0xa0 [ 41.353511] [] sysfs_do_create_link_sd.isra.0+0xd1/0xf0 [ 41.360792] [] sysfs_create_link+0x43/0xb0 [ 41.367113] [] device_add+0x6a1/0x1400 [ 41.372732] [] ? device_private_init+0x180/0x180 [ 41.379336] [] ? kfree_const+0x1d/0x20 [ 41.384952] [] ? kobject_set_name_vargs+0xb4/0x130 [ 41.391593] [] device_create_groups_vargs+0x1c8/0x220 [ 41.398427] [] device_create+0x88/0xa0 [ 41.404418] [] ? device_create_vargs+0x20/0x20 [ 41.410718] [] ? macvlan_set_mac_address+0x150/0x150 [ 41.417545] [] macvtap_device_event+0x1c4/0x2a0 [ 41.424424] [] notifier_call_chain+0x8b/0x170 [ 41.430952] [] raw_notifier_call_chain+0x11/0x20 [ 41.437680] [] call_netdevice_notifiers_info+0x47/0x80 [ 41.444628] [] register_netdevice+0x8e8/0xd00 [ 41.450847] [] ? netdev_change_features+0x80/0x80 [ 41.457606] [] ? dev_get_nest_level+0x10c/0x1a0 [ 41.463922] [] macvlan_common_newlink+0x8b9/0x1090 [ 41.470594] [] macvtap_newlink+0xbf/0x110 [ 41.476387] [] ? __netlink_ns_capable+0xc7/0xf0 [ 41.483067] [] rtnl_newlink+0xd4b/0x1230 [ 41.488891] [] ? rtnl_link_ops_get+0x5d/0x90 [ 41.494930] [] ? rtnl_newlink+0x319/0x1230 [ 41.500963] [] ? load_balance+0xc07/0x1ee0 [ 41.506824] [] ? rtnl_setlink+0x2f0/0x2f0 [ 41.512705] [] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 41.519874] [] ? __netlink_ns_capable+0xc7/0xf0 [ 41.526762] [] rtnetlink_rcv_msg+0x222/0x680 [ 41.532804] [] ? rtnetlink_rcv+0x30/0x30 [ 41.538630] [] ? mutex_lock_nested+0x5fd/0xb30 [ 41.544958] [] ? rtnetlink_rcv+0x16/0x30 [ 41.550748] [] ? netlink_seq_start+0xe0/0xe0 [ 41.556954] [] netlink_rcv_skb+0x242/0x350 [ 41.563214] [] ? rtnetlink_rcv+0x30/0x30 [ 41.569088] [] rtnetlink_rcv+0x25/0x30 [ 41.574626] [] netlink_unicast+0x3da/0x560 [ 41.580775] [] ? netlink_sendskb+0x40/0x40 [ 41.587071] [] netlink_sendmsg+0x9bb/0xb40 [ 41.592932] [] ? nlmsg_notify+0xf0/0xf0 [ 41.598811] [] ? __might_fault+0xf1/0x1b0 [ 41.604683] [] ? security_socket_sendmsg+0x6a/0xa0 [ 41.612003] [] ? nlmsg_notify+0xf0/0xf0 [ 41.618156] [] sock_sendmsg+0xb5/0xf0 [ 41.623585] [] SyS_sendto+0x1ca/0x290 [ 41.629022] [] ? SyS_getpeername+0x240/0x240 [ 41.635059] [] ? mntput_no_expire+0xce/0x600 [ 41.641215] [] ? mnt_get_count+0x1c0/0x1c0 [ 41.647255] [] ? mntput+0x52/0x70 [ 41.652508] [] ? task_work_run+0x14a/0x200 [ 41.658449] [] ? trace_hardirqs_off+0xd/0x10 [ 41.664575] [] ? exit_to_usermode_loop+0x112/0x1c0 [ 41.671324] [] ? trace_hardirqs_on_thunk+0x1b/0x1d [ 41.677879] [] entry_SYSCALL_64_fastpath+0x23/0xc1 [ 41.686442] Kernel Offset: disabled