[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.4' (ECDSA) to the list of known hosts. 2021/06/11 13:26:37 parsed 1 programs 2021/06/11 13:26:37 executed programs: 0 syzkaller login: [ 34.907596] IPVS: ftp: loaded support on port[0] = 21 [ 35.011388] chnl_net:caif_netlink_parms(): no params data found [ 35.088354] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.094984] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.102735] device bridge_slave_0 entered promiscuous mode [ 35.110381] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.116863] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.124378] device bridge_slave_1 entered promiscuous mode [ 35.140906] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 35.149746] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 35.167483] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 35.175235] team0: Port device team_slave_0 added [ 35.181021] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 35.188029] team0: Port device team_slave_1 added [ 35.203672] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 35.210255] 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. [ 35.235789] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 35.247259] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 35.253728] 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. [ 35.279004] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 35.290246] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 35.297648] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 35.316031] device hsr_slave_0 entered promiscuous mode [ 35.321671] device hsr_slave_1 entered promiscuous mode [ 35.327524] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 35.334673] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 35.395703] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.402262] bridge0: port 2(bridge_slave_1) entered forwarding state [ 35.409224] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.415576] bridge0: port 1(bridge_slave_0) entered forwarding state [ 35.450600] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 35.456669] 8021q: adding VLAN 0 to HW filter on device bond0 [ 35.465401] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 35.474804] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 35.483015] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.500505] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.510878] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 35.516991] 8021q: adding VLAN 0 to HW filter on device team0 [ 35.525715] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 35.533660] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.540086] bridge0: port 1(bridge_slave_0) entered forwarding state [ 35.558264] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 35.565947] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.572464] bridge0: port 2(bridge_slave_1) entered forwarding state [ 35.579707] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 35.587324] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 35.595154] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 35.605126] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 35.612621] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 35.622469] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 35.628643] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 35.641210] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 35.649225] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 35.655862] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 35.665739] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 35.714624] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 35.723922] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 35.753431] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 35.761551] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 35.768606] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 35.777525] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 35.785501] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 35.793327] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 35.801826] device veth0_vlan entered promiscuous mode [ 35.811685] device veth1_vlan entered promiscuous mode [ 35.817858] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 35.825935] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 35.836835] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 35.846799] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 35.854391] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 35.861673] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 35.871500] device veth0_macvtap entered promiscuous mode [ 35.877841] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 35.885913] device veth1_macvtap entered promiscuous mode [ 35.894780] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 35.903851] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 35.913694] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 35.920661] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 35.939195] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 35.949069] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 35.955714] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 35.998747] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 36.060596] gre0: Master is either lo or non-ether device [ 36.109766] ip_vti0: Master is either lo or non-ether device [ 36.131065] ip6_vti0: Master is either lo or non-ether device [ 36.149125] sit0: Master is either lo or non-ether device [ 36.166185] ip6tnl0: Master is either lo or non-ether device [ 36.183614] ip6gre0: Master is either lo or non-ether device [ 36.242532] syz-executor.0 (8249) used greatest stack depth: 24992 bytes left [ 36.281903] vcan0: Master is either lo or non-ether device [ 36.438283] nlmon0: Master is either lo or non-ether device [ 36.503739] caif0: Master is either lo or non-ether device [ 36.555829] syz-executor.0 (8296) used greatest stack depth: 24896 bytes left [ 36.605012] vxcan0: Master is either lo or non-ether device [ 36.651052] vxcan1: Master is either lo or non-ether device [ 36.915860] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.933034] bridge_slave_0: Device is already in use. [ 36.940595] Bluetooth: hci0 command 0x0409 tx timeout [ 36.950666] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.958949] device bridge_slave_0 left promiscuous mode [ 36.964844] bridge0: port 1(bridge_slave_0) entered disabled state [ 37.110012] bridge0: port 2(bridge_slave_1) entered disabled state [ 37.121464] bridge_slave_1: Device is already in use. [ 37.139609] bridge0: port 2(bridge_slave_1) entered disabled state [ 37.148663] device bridge_slave_1 left promiscuous mode [ 37.154199] bridge0: port 2(bridge_slave_1) entered disabled state [ 37.274067] bond_slave_0: Device is already in use. [ 37.288105] bond0: Releasing backup interface bond_slave_0 [ 37.426786] bond_slave_1: Device is already in use. [ 37.433427] bond0: Releasing backup interface bond_slave_1 [ 37.604074] team_slave_0: Device is already in use. [ 37.618645] team0: Port device team_slave_0 removed [ 37.747261] team_slave_1: Device is already in use. [ 37.755115] team0: Port device team_slave_1 removed [ 37.904122] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0 [ 37.917507] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 37.927708] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 37.939108] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 38.093254] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1 [ 38.111309] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 38.121302] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 38.132702] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 38.262861] hsr_slave_0: Device is already in use. [ 38.279242] device hsr_slave_0 left promiscuous mode [ 38.405289] hsr_slave_1: Device is already in use. [ 38.418852] device hsr_slave_1 left promiscuous mode [ 38.660398] syz-executor.0 (8583) used greatest stack depth: 24376 bytes left [ 38.672526] veth1_vlan: Device is already in use. [ 38.765473] ------------[ cut here ]------------ [ 38.770275] WARNING: CPU: 0 PID: 8600 at drivers/net/ipvlan/ipvlan_main.c:63 ipvlan_unregister_nf_hook+0x230/0x260 [ 38.780774] Kernel panic - not syncing: panic_on_warn set ... [ 38.780774] [ 38.788151] CPU: 0 PID: 8600 Comm: syz-executor.0 Not tainted 4.14.236-syzkaller #0 [ 38.795951] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.805433] Call Trace: [ 38.808049] dump_stack+0x1b2/0x281 [ 38.811682] panic+0x1f9/0x42d [ 38.814886] ? add_taint.cold+0x16/0x16 [ 38.818902] ? ipvlan_unregister_nf_hook+0x230/0x260 [ 38.824038] ? ipvlan_unregister_nf_hook+0x230/0x260 [ 38.829146] __warn.cold+0x20/0x44 [ 38.832691] ? ist_end_non_atomic+0x10/0x10 [ 38.837181] ? ipvlan_unregister_nf_hook+0x230/0x260 [ 38.843829] report_bug+0x208/0x250 [ 38.847447] do_error_trap+0x195/0x2d0 [ 38.851325] ? math_error+0x2d0/0x2d0 [ 38.855108] ? trace_hardirqs_on+0x10/0x10 [ 38.859332] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.864290] invalid_op+0x1b/0x40 [ 38.867740] RIP: 0010:ipvlan_unregister_nf_hook+0x230/0x260 [ 38.873446] RSP: 0018:ffff88809e5cf3e8 EFLAGS: 00010297 [ 38.878790] RAX: ffff88809ea6a5c0 RBX: 0000000000000000 RCX: 1ffff11013d4d5ce [ 38.886058] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000282 [ 38.893331] RBP: ffff888097e98040 R08: 0000000000000000 R09: 0000000000000001 [ 38.900686] R10: 0000000000000000 R11: ffff88809ea6a5c0 R12: ffff8880af33b700 [ 38.907940] R13: ffff8880b2e20480 R14: 0000000000000000 R15: ffff888095b7c6c0 [ 38.915225] ? ipvlan_unregister_nf_hook+0x230/0x260 [ 38.920314] ipvlan_set_port_mode+0x491/0x5a0 [ 38.924864] ipvlan_link_new+0xba2/0xfa0 [ 38.929002] rtnl_newlink+0xfab/0x1860 [ 38.932871] ? __lock_acquire+0x5fc/0x3f20 [ 38.937091] ? ipvlan_port_destroy+0x3f0/0x3f0 [ 38.941657] ? trace_hardirqs_on+0x10/0x10 [ 38.945883] ? rtnl_dellink+0x6a0/0x6a0 [ 38.949846] ? trace_hardirqs_on+0x10/0x10 [ 38.954153] ? __read_once_size_nocheck.constprop.0+0x10/0x10 [ 38.960139] ? deref_stack_reg+0x124/0x1a0 [ 38.964380] ? lock_acquire+0x170/0x3f0 [ 38.968337] ? lock_downgrade+0x740/0x740 [ 38.972470] ? rtnl_dellink+0x6a0/0x6a0 [ 38.976442] rtnetlink_rcv_msg+0x3be/0xb10 [ 38.980677] ? rtnl_calcit.isra.0+0x3a0/0x3a0 [ 38.985162] ? __netlink_lookup+0x345/0x5d0 [ 38.989497] netlink_rcv_skb+0x125/0x390 [ 38.993555] ? rtnl_calcit.isra.0+0x3a0/0x3a0 [ 38.998059] ? netlink_ack+0x9a0/0x9a0 [ 39.001952] netlink_unicast+0x437/0x610 [ 39.006009] ? netlink_sendskb+0xd0/0xd0 [ 39.010078] ? __check_object_size+0x179/0x230 [ 39.014649] netlink_sendmsg+0x62e/0xb80 [ 39.018711] ? nlmsg_notify+0x170/0x170 [ 39.022667] ? kernel_recvmsg+0x210/0x210 [ 39.026800] ? security_socket_sendmsg+0x83/0xb0 [ 39.031540] ? nlmsg_notify+0x170/0x170 [ 39.035508] sock_sendmsg+0xb5/0x100 [ 39.039220] ___sys_sendmsg+0x6c8/0x800 [ 39.043172] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 39.047922] ? trace_hardirqs_on+0x10/0x10 [ 39.052158] ? trace_hardirqs_on+0x10/0x10 [ 39.056396] ? do_futex+0x127/0x1570 [ 39.060104] ? __might_fault+0x104/0x1b0 [ 39.064327] ? lock_acquire+0x170/0x3f0 [ 39.068297] ? lock_downgrade+0x740/0x740 [ 39.072427] ? futex_exit_release+0x220/0x220 [ 39.076921] ? __might_fault+0x177/0x1b0 [ 39.080979] ? _copy_to_user+0x82/0xd0 [ 39.084868] ? move_addr_to_user+0x13f/0x180 [ 39.089265] ? __fdget+0x167/0x1f0 [ 39.092801] ? sockfd_lookup_light+0xb2/0x160 [ 39.097282] __sys_sendmsg+0xa3/0x120 [ 39.101066] ? SyS_shutdown+0x160/0x160 [ 39.105037] ? move_addr_to_kernel+0x60/0x60 [ 39.109437] ? __do_page_fault+0x159/0xad0 [ 39.113668] SyS_sendmsg+0x27/0x40 [ 39.117194] ? __sys_sendmsg+0x120/0x120 [ 39.121261] do_syscall_64+0x1d5/0x640 [ 39.125151] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 39.130328] RIP: 0033:0x4665d9 [ 39.133495] RSP: 002b:00007fff1fc9df48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 39.141205] RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 [ 39.148567] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000005 [ 39.155827] RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 [ 39.163093] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 [ 39.170348] R13: 00007fff1fc9e0e0 R14: 000000000056bf80 R15: 0000000000009780 [ 39.178504] Kernel Offset: disabled [ 39.182134] Rebooting in 86400 seconds..