[ 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 '10.128.0.167' (ECDSA) to the list of known hosts. 2021/06/13 19:48:23 parsed 1 programs 2021/06/13 19:48:23 executed programs: 0 syzkaller login: [ 30.822017] IPVS: ftp: loaded support on port[0] = 21 [ 30.904315] chnl_net:caif_netlink_parms(): no params data found [ 31.000671] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.009632] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.018777] device bridge_slave_0 entered promiscuous mode [ 31.025839] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.033644] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.042455] device bridge_slave_1 entered promiscuous mode [ 31.059523] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 31.068546] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 31.087419] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 31.094789] team0: Port device team_slave_0 added [ 31.101489] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 31.109487] team0: Port device team_slave_1 added [ 31.124817] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 31.131226] 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. [ 31.157423] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 31.169318] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 31.175548] 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. [ 31.202250] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 31.213627] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 31.221858] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 31.240720] device hsr_slave_0 entered promiscuous mode [ 31.246784] device hsr_slave_1 entered promiscuous mode [ 31.252886] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 31.260282] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 31.320821] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.327318] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.334122] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.340640] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.370883] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 31.378331] 8021q: adding VLAN 0 to HW filter on device bond0 [ 31.385951] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 31.395024] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 31.403861] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.421275] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.431577] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 31.439678] 8021q: adding VLAN 0 to HW filter on device team0 [ 31.448204] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 31.455865] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.462272] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.471285] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 31.479194] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.485731] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.505425] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 31.515693] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 31.527544] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 31.534708] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 31.543443] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 31.551642] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 31.559761] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 31.567850] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 31.574733] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 31.587524] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 31.596412] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 31.603278] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 31.613811] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 31.665505] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 31.675034] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 31.706470] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 31.713459] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 31.720966] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 31.729985] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 31.737920] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 31.744996] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 31.754693] device veth0_vlan entered promiscuous mode [ 31.763494] device veth1_vlan entered promiscuous mode [ 31.769655] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 31.778478] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 31.790621] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 31.800042] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 31.807778] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 31.815070] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 31.824827] device veth0_macvtap entered promiscuous mode [ 31.832436] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 31.841398] device veth1_macvtap entered promiscuous mode [ 31.849927] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 31.858934] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 31.869207] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 31.876960] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 31.885113] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 31.893215] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 31.902780] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 31.910218] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 31.917682] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 31.925807] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 32.030161] gre0: Master is either lo or non-ether device [ 32.088120] ip_vti0: Master is either lo or non-ether device [ 32.106796] ip6_vti0: Master is either lo or non-ether device [ 32.123843] sit0: Master is either lo or non-ether device [ 32.143329] ip6tnl0: Master is either lo or non-ether device [ 32.159644] ip6gre0: Master is either lo or non-ether device [ 32.200487] syz-executor.0 (8243) used greatest stack depth: 24624 bytes left [ 32.241957] vcan0: Master is either lo or non-ether device [ 32.387911] nlmon0: Master is either lo or non-ether device [ 32.463862] caif0: Master is either lo or non-ether device [ 32.544362] vxcan0: Master is either lo or non-ether device [ 32.624173] vxcan1: Master is either lo or non-ether device [ 32.830000] syz-executor.0 (8335) used greatest stack depth: 24376 bytes left [ 32.845718] Bluetooth: hci0 command 0x0409 tx timeout [ 32.899308] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.921198] bridge_slave_0: Device is already in use. [ 32.942208] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.951144] device bridge_slave_0 left promiscuous mode [ 32.965046] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.096926] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.127064] bridge_slave_1: Device is already in use. [ 33.137782] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.146949] device bridge_slave_1 left promiscuous mode [ 33.152572] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.289265] bond_slave_0: Device is already in use. [ 33.300381] bond0: Releasing backup interface bond_slave_0 [ 33.427995] bond_slave_1: Device is already in use. [ 33.441873] bond0: Releasing backup interface bond_slave_1 [ 33.608143] team_slave_0: Device is already in use. [ 33.623758] team0: Port device team_slave_0 removed [ 33.748642] team_slave_1: Device is already in use. [ 33.758651] team0: Port device team_slave_1 removed [ 33.905281] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0 [ 33.915317] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 33.929358] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 33.939014] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 34.079270] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1 [ 34.092166] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 34.102749] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 34.113416] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 34.243322] hsr_slave_0: Device is already in use. [ 34.260736] device hsr_slave_0 left promiscuous mode [ 34.385835] hsr_slave_1: Device is already in use. [ 34.398339] device hsr_slave_1 left promiscuous mode [ 34.633595] veth1_vlan: Device is already in use. [ 34.722769] ------------[ cut here ]------------ [ 34.727563] WARNING: CPU: 1 PID: 8605 at drivers/net/ipvlan/ipvlan_main.c:63 ipvlan_unregister_nf_hook+0x230/0x260 [ 34.738131] Kernel panic - not syncing: panic_on_warn set ... [ 34.738131] [ 34.745505] CPU: 1 PID: 8605 Comm: syz-executor.0 Not tainted 4.14.236-syzkaller #0 [ 34.753407] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.762774] Call Trace: [ 34.765379] dump_stack+0x1b2/0x281 [ 34.769018] panic+0x1f9/0x42d [ 34.772207] ? add_taint.cold+0x16/0x16 [ 34.776164] ? ipvlan_unregister_nf_hook+0x230/0x260 [ 34.781245] ? ipvlan_unregister_nf_hook+0x230/0x260 [ 34.786445] __warn.cold+0x20/0x44 [ 34.789964] ? ist_end_non_atomic+0x10/0x10 [ 34.794287] ? ipvlan_unregister_nf_hook+0x230/0x260 [ 34.799381] report_bug+0x208/0x250 [ 34.803300] do_error_trap+0x195/0x2d0 [ 34.807175] ? math_error+0x2d0/0x2d0 [ 34.810963] ? trace_hardirqs_on+0x10/0x10 [ 34.815358] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.820373] invalid_op+0x1b/0x40 [ 34.823828] RIP: 0010:ipvlan_unregister_nf_hook+0x230/0x260 [ 34.829699] RSP: 0018:ffff88809550f3e8 EFLAGS: 00010297 [ 34.835045] RAX: ffff88809dff8040 RBX: 0000000000000000 RCX: 1ffff11013bff11e [ 34.842295] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000282 [ 34.849643] RBP: ffff888095b30040 R08: 0000000000000000 R09: 0000000000000001 [ 34.856890] R10: 0000000000000000 R11: ffff88809dff8040 R12: ffff8880b2f20f80 [ 34.864136] R13: ffff8880b19aa8c0 R14: 0000000000000000 R15: ffff8880b196eb00 [ 34.871416] ? ipvlan_unregister_nf_hook+0x230/0x260 [ 34.876495] ipvlan_set_port_mode+0x491/0x5a0 [ 34.880976] ipvlan_link_new+0xba2/0xfa0 [ 34.885037] rtnl_newlink+0xfab/0x1860 [ 34.888900] ? __lock_acquire+0x5fc/0x3f20 [ 34.893125] ? ipvlan_port_destroy+0x3f0/0x3f0 [ 34.897680] ? trace_hardirqs_on+0x10/0x10 [ 34.901912] ? rtnl_dellink+0x6a0/0x6a0 [ 34.905879] ? trace_hardirqs_on+0x10/0x10 [ 34.910092] ? __read_once_size_nocheck.constprop.0+0x10/0x10 [ 34.916289] ? deref_stack_reg+0x124/0x1a0 [ 34.920517] ? lock_acquire+0x170/0x3f0 [ 34.924484] ? lock_downgrade+0x740/0x740 [ 34.928621] ? rtnl_dellink+0x6a0/0x6a0 [ 34.932576] rtnetlink_rcv_msg+0x3be/0xb10 [ 34.936794] ? rtnl_calcit.isra.0+0x3a0/0x3a0 [ 34.941383] ? __netlink_lookup+0x345/0x5d0 [ 34.945868] netlink_rcv_skb+0x125/0x390 [ 34.949992] ? rtnl_calcit.isra.0+0x3a0/0x3a0 [ 34.954579] ? netlink_ack+0x9a0/0x9a0 [ 34.958532] netlink_unicast+0x437/0x610 [ 34.962566] ? netlink_sendskb+0xd0/0xd0 [ 34.966602] ? __check_object_size+0x179/0x230 [ 34.971203] netlink_sendmsg+0x62e/0xb80 [ 34.975611] ? nlmsg_notify+0x170/0x170 [ 34.979558] ? kernel_recvmsg+0x210/0x210 [ 34.983686] ? security_socket_sendmsg+0x83/0xb0 [ 34.988592] ? nlmsg_notify+0x170/0x170 [ 34.992542] sock_sendmsg+0xb5/0x100 [ 34.996232] ___sys_sendmsg+0x6c8/0x800 [ 35.000194] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 35.004940] ? trace_hardirqs_on+0x10/0x10 [ 35.009237] ? trace_hardirqs_on+0x10/0x10 [ 35.013449] ? do_futex+0x127/0x1570 [ 35.017158] ? __might_fault+0x104/0x1b0 [ 35.021221] ? lock_acquire+0x170/0x3f0 [ 35.025364] ? lock_downgrade+0x740/0x740 [ 35.029510] ? futex_exit_release+0x220/0x220 [ 35.033995] ? __might_fault+0x177/0x1b0 [ 35.038035] ? _copy_to_user+0x82/0xd0 [ 35.042004] ? move_addr_to_user+0x13f/0x180 [ 35.046386] ? __fdget+0x167/0x1f0 [ 35.050012] ? sockfd_lookup_light+0xb2/0x160 [ 35.054502] __sys_sendmsg+0xa3/0x120 [ 35.058521] ? SyS_shutdown+0x160/0x160 [ 35.062530] ? move_addr_to_kernel+0x60/0x60 [ 35.066990] ? __do_page_fault+0x159/0xad0 [ 35.071206] SyS_sendmsg+0x27/0x40 [ 35.074772] ? __sys_sendmsg+0x120/0x120 [ 35.078950] do_syscall_64+0x1d5/0x640 [ 35.082822] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 35.088041] RIP: 0033:0x4665d9 [ 35.091409] RSP: 002b:00007ffce17231c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 35.099215] RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 [ 35.106576] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000005 [ 35.113825] RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 [ 35.121074] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 [ 35.128320] R13: 00007ffce1723360 R14: 000000000056bf80 R15: 00000000000087b0 [ 35.137525] Kernel Offset: disabled [ 35.141144] Rebooting in 86400 seconds..