unregister_netdevice: waiting for DEV to become free unregister_netdevice: waiting for ip6gre0 to become free. Usage count = 2 Warning: Permanently added '10.128.0.77' (ECDSA) to the list of known hosts. 2021/03/31 14:23:19 fuzzer started 2021/03/31 14:23:19 connecting to host at 10.128.0.169:33177 2021/03/31 14:23:19 checking machine... 2021/03/31 14:23:19 checking revisions... 2021/03/31 14:23:19 testing simple program... syzkaller login: [ 57.196277][ T8395] IPVS: ftp: loaded support on port[0] = 21 [ 57.328147][ T8395] chnl_net:caif_netlink_parms(): no params data found [ 57.393223][ T8395] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.403789][ T8395] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.414825][ T8395] device bridge_slave_0 entered promiscuous mode [ 57.427090][ T8395] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.437757][ T8395] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.450587][ T8395] device bridge_slave_1 entered promiscuous mode [ 57.474231][ T8395] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.489605][ T8395] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.516519][ T8395] team0: Port device team_slave_0 added [ 57.525206][ T8395] team0: Port device team_slave_1 added [ 57.544532][ T8395] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 57.554097][ T8395] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 57.594132][ T8395] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 57.610702][ T8395] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 57.620915][ T8395] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 57.661838][ T8395] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 57.691377][ T8395] device hsr_slave_0 entered promiscuous mode [ 57.701273][ T8395] device hsr_slave_1 entered promiscuous mode [ 57.802272][ T8395] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.814784][ T8395] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.825673][ T8395] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.835729][ T8395] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.864051][ T8395] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.872606][ T8395] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.881986][ T8395] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.892083][ T8395] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.941017][ T8395] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.959674][ T3737] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.975909][ T3737] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.988444][ T3737] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.999119][ T3737] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 58.015391][ T8395] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.027330][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.041842][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.051430][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.071916][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.082665][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.093067][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.111751][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.123334][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.142500][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.153735][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.171639][ T8395] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 58.187125][ T8395] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.199571][ T3136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.223300][ T8616] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 58.236040][ T8616] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 58.253396][ T8395] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 58.276040][ T8616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 58.299170][ T8616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 58.311093][ T8616] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 58.323262][ T8616] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 58.337166][ T8395] device veth0_vlan entered promiscuous mode [ 58.352642][ T8395] device veth1_vlan entered promiscuous mode [ 58.384872][ T3136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 58.398097][ T3136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 58.417392][ T8395] device veth0_macvtap entered promiscuous mode [ 58.431234][ T8395] device veth1_macvtap entered promiscuous mode [ 58.452709][ T8395] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 58.463985][ T3136] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 58.475900][ T3136] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 58.487655][ T3136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 58.500572][ T3136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 58.516706][ T8395] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 58.529654][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 58.541300][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 58.557579][ T8395] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.572275][ T8395] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.584590][ T8395] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.598545][ T8395] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 58.682077][ T254] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.711908][ T254] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.730202][ T3136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 58.743617][ T254] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.754142][ T254] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.765133][ T3737] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/03/31 14:23:22 building call list... [ 59.606592][ T254] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 61.253903][ T8649] can: request_module (can-proto-0) failed. executing program [ 61.995080][ T254] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 64.078636][ T254] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 64.238024][ T254] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 205.126538][ T254] unregister_netdevice: waiting for ip6gre0 to become free. Usage count = 2