[ 31.204969] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.214242] device bridge_slave_0 left promiscuous mode [ 31.219987] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.229841] device veth1_macvtap left promiscuous mode [ 31.235430] device veth0_macvtap left promiscuous mode [ 31.240966] device veth1_vlan left promiscuous mode [ 31.246006] device veth0_vlan left promiscuous mode [ 31.370892] bond0 (unregistering): Releasing backup interface bond_slave_1 [ 31.385527] bond0 (unregistering): Releasing backup interface bond_slave_0 [ 31.418763] bond0 (unregistering): Released all slaves Warning: Permanently added '10.128.0.39' (ECDSA) to the list of known hosts. 2021/01/16 08:36:53 parsed 1 programs 2021/01/16 08:36:53 executed programs: 0 [ 38.066006] IPv6: ADDRCONF(NETDEV_CHANGE): nr3: link becomes ready [ 38.091769] IPv6: ADDRCONF(NETDEV_CHANGE): nr2: link becomes ready [ 38.102377] IPVS: Creating netns size=2712 id=2 [ 38.102440] IPVS: ftp: loaded support on port[0] = 21 [ 38.119968] IPv6: ADDRCONF(NETDEV_CHANGE): nr4: link becomes ready [ 38.132699] IPv6: ADDRCONF(NETDEV_CHANGE): nr0: link becomes ready [ 38.141295] IPv6: ADDRCONF(NETDEV_CHANGE): nr5: link becomes ready [ 38.150509] IPv6: ADDRCONF(NETDEV_CHANGE): nr1: link becomes ready [ 38.197760] IPVS: Creating netns size=2712 id=3 [ 38.204426] IPVS: ftp: loaded support on port[0] = 21 [ 38.287470] chnl_net:caif_netlink_parms(): no params data found [ 38.323154] IPVS: Creating netns size=2712 id=4 [ 38.328893] IPVS: ftp: loaded support on port[0] = 21 [ 38.453612] IPVS: Creating netns size=2712 id=5 [ 38.462777] IPVS: ftp: loaded support on port[0] = 21 [ 38.506592] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.513854] bridge0: port 1(bridge_slave_0) entered disabled state [ 38.522809] device bridge_slave_0 entered promiscuous mode [ 38.540207] chnl_net:caif_netlink_parms(): no params data found [ 38.553864] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.561993] bridge0: port 2(bridge_slave_1) entered disabled state [ 38.570640] device bridge_slave_1 entered promiscuous mode [ 38.654718] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 38.683478] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 38.701108] chnl_net:caif_netlink_parms(): no params data found [ 38.750098] IPVS: Creating netns size=2712 id=6 [ 38.755516] IPVS: ftp: loaded support on port[0] = 21 [ 38.912561] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.920930] bridge0: port 1(bridge_slave_0) entered disabled state [ 38.930140] device bridge_slave_0 entered promiscuous mode [ 38.946232] batman_adv: Unable to register the batman interface 'batadv0': -12 [ 38.956610] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.966175] bridge0: port 2(bridge_slave_1) entered disabled state [ 38.975290] device bridge_slave_1 entered promiscuous mode [ 38.991060] batman_adv: Unable to register the batman interface 'batadv0': -12 [ 39.032546] IPVS: Creating netns size=2712 id=7 [ 39.042957] IPVS: ftp: loaded support on port[0] = 21 [ 39.044256] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 39.044858] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 39.096117] chnl_net:caif_netlink_parms(): no params data found [ 39.129431] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 39.143287] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 39.154495] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.163575] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.172688] device bridge_slave_0 entered promiscuous mode [ 39.218329] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.225711] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.236436] device bridge_slave_1 entered promiscuous mode [ 39.244551] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 39.286946] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 39.396457] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 39.429670] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 39.461726] chnl_net:caif_netlink_parms(): no params data found [ 39.491161] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 39.511907] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 39.648620] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.658507] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.670172] device bridge_slave_0 entered promiscuous mode [ 39.713299] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.722562] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.732884] device bridge_slave_1 entered promiscuous mode [ 39.742131] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 39.750783] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 39.786364] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 39.794336] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 39.889443] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 39.904045] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 39.930193] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 39.938751] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 39.991458] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 40.010829] chnl_net:caif_netlink_parms(): no params data found [ 40.064546] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.072717] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.082404] device bridge_slave_0 entered promiscuous mode [ 40.128017] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.135082] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.144402] device bridge_slave_1 entered promiscuous mode [ 40.217389] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 40.228114] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 40.269015] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 40.318512] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 40.409861] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 40.419907] 8021q: adding VLAN 0 to HW filter on device bond0 [ 40.433132] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 40.465506] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 40.487299] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 40.505376] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 40.513555] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.520468] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.528593] device bridge_slave_0 entered promiscuous mode [ 40.551368] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 40.558813] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.565379] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.573662] device bridge_slave_1 entered promiscuous mode [ 40.586106] ------------[ cut here ]------------ [ 40.593506] WARNING: CPU: 1 PID: 7909 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x7b/0xa0 [ 40.601388] sysfs: cannot create duplicate filename '/class/macvtap/tap50' [ 40.609321] Kernel panic - not syncing: panic_on_warn set ... [ 40.609321] [ 40.617134] CPU: 1 PID: 7909 Comm: syz-executor.4 Not tainted 4.6.0-syzkaller #0 [ 40.625115] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.634577] 0000000000000000 ffff8801372aefc8 ffffffff82da4dd2 ffffffff8667aec0 [ 40.642887] ffff8801372af0a0 ffffffff8672c8c0 ffffffff818db72b 0000000000000009 [ 40.650990] ffff8801372af090 ffffffff815c7a54 0000000041b58ab3 ffffffff87779893 [ 40.659796] Call Trace: [ 40.662378] [] dump_stack+0x136/0x1d4 [ 40.668222] [] ? sysfs_warn_dup+0x7b/0xa0 [ 40.674251] [] panic+0x1af/0x348 [ 40.679618] [] ? to_vmem_altmap+0x125/0x125 [ 40.685792] [] ? sysfs_warn_dup+0x7b/0xa0 [ 40.692031] [] __warn+0x18d/0x1b0 [ 40.697212] [] warn_slowpath_fmt+0x92/0xb0 [ 40.703165] [] ? __warn+0x1b0/0x1b0 [ 40.708958] [] ? kernfs_path_from_node+0x4a/0x60 [ 40.715706] [] sysfs_warn_dup+0x7b/0xa0 [ 40.721708] [] sysfs_do_create_link_sd.isra.0+0xd1/0xf0 [ 40.728799] [] sysfs_create_link+0x43/0xb0 [ 40.734698] [] device_add+0x6a1/0x1400 [ 40.740267] [] ? device_private_init+0x180/0x180 [ 40.746877] [] ? kfree_const+0x1d/0x20 [ 40.752731] [] ? kobject_set_name_vargs+0xb4/0x130 [ 40.759336] [] device_create_groups_vargs+0x1c8/0x220 [ 40.766760] [] device_create+0x88/0xa0 [ 40.772700] [] ? device_create_vargs+0x20/0x20 [ 40.779099] [] ? macvlan_set_mac_address+0x150/0x150 [ 40.786044] [] macvtap_device_event+0x1c4/0x2a0 [ 40.792626] [] notifier_call_chain+0x8b/0x170 [ 40.799019] [] raw_notifier_call_chain+0x11/0x20 [ 40.805617] [] call_netdevice_notifiers_info+0x47/0x80 [ 40.812625] [] register_netdevice+0x8e8/0xd00 [ 40.819248] [] ? netdev_change_features+0x80/0x80 [ 40.825818] [] ? dev_get_nest_level+0x10c/0x1a0 [ 40.832430] [] macvlan_common_newlink+0x8b9/0x1090 [ 40.839344] [] macvtap_newlink+0xbf/0x110 [ 40.845240] [] ? __netlink_ns_capable+0xc7/0xf0 [ 40.851903] [] rtnl_newlink+0xd4b/0x1230 [ 40.857711] [] ? rtnl_link_ops_get+0x5d/0x90 [ 40.863898] [] ? rtnl_newlink+0x319/0x1230 [ 40.869892] [] ? load_balance+0x967/0x1ee0 [ 40.876232] [] ? rtnl_setlink+0x2f0/0x2f0 [ 40.882025] [] ? find_busiest_group+0x2510/0x2510 [ 40.888669] [] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.896240] [] ? __netlink_ns_capable+0xc7/0xf0 [ 40.903780] [] rtnetlink_rcv_msg+0x222/0x680 [ 40.910335] [] ? rtnetlink_rcv+0x30/0x30 [ 40.917671] [] ? mutex_lock_nested+0x5fd/0xb30 [ 40.924356] [] ? rtnetlink_rcv+0x16/0x30 [ 40.931006] [] ? netlink_seq_start+0xe0/0xe0 [ 40.937968] [] netlink_rcv_skb+0x242/0x350 [ 40.944785] [] ? rtnetlink_rcv+0x30/0x30 [ 40.951473] [] rtnetlink_rcv+0x25/0x30 [ 40.957173] [] netlink_unicast+0x3da/0x560 [ 40.963657] [] ? netlink_sendskb+0x40/0x40 [ 40.970727] [] netlink_sendmsg+0x9bb/0xb40 [ 40.976794] [] ? nlmsg_notify+0xf0/0xf0 [ 40.983107] [] ? __might_fault+0xf1/0x1b0 [ 40.990620] [] ? security_socket_sendmsg+0x6a/0xa0 [ 40.998364] [] ? nlmsg_notify+0xf0/0xf0 [ 41.004370] [] sock_sendmsg+0xb5/0xf0 [ 41.010241] [] SyS_sendto+0x1ca/0x290 [ 41.015971] [] ? SyS_getpeername+0x240/0x240 [ 41.022925] [] ? mntput_no_expire+0xce/0x600 [ 41.029539] [] ? mnt_get_count+0x1c0/0x1c0 [ 41.035854] [] ? mntput+0x52/0x70 [ 41.041329] [] ? task_work_run+0x14a/0x200 [ 41.047232] [] ? trace_hardirqs_off+0xd/0x10 [ 41.053562] [] ? exit_to_usermode_loop+0x112/0x1c0 [ 41.060144] [] ? trace_hardirqs_on_thunk+0x1b/0x1d [ 41.066826] [] entry_SYSCALL_64_fastpath+0x23/0xc1 [ 41.074600] Kernel Offset: disabled