INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.61' (ECDSA) to the list of known hosts. net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 syzkaller login: [ 42.259599] IPVS: ftp: loaded support on port[0] = 21 RTNETLINK answers: File exists RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported [ 42.528352] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument [ 42.881258] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 42.887346] 8021q: adding VLAN 0 to HW filter on device bond0 [ 42.924509] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 42.963518] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready executing program [ 43.002632] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 43.008730] 8021q: adding VLAN 0 to HW filter on device team0 [ 43.018225] netlink: 'syzkaller556835': attribute type 3 has an invalid length. [ 43.025828] netlink: 'syzkaller556835': attribute type 3 has an invalid length. [ 43.033304] list_add double add: new=0000000004f859c0, prev=00000000c9745291, next=0000000004f859c0. [ 43.042711] ------------[ cut here ]------------ [ 43.047441] kernel BUG at lib/list_debug.c:31! [ 43.052046] invalid opcode: 0000 [#1] SMP KASAN [ 43.056690] Dumping ftrace buffer: [ 43.060206] (ftrace buffer empty) [ 43.063893] Modules linked in: [ 43.067067] CPU: 0 PID: 4466 Comm: syzkaller556835 Not tainted 4.16.0+ #17 [ 43.074055] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.083397] RIP: 0010:__list_add_valid+0xaa/0xb0 [ 43.088128] RSP: 0018:ffff8801b04bf248 EFLAGS: 00010286 [ 43.093466] RAX: 0000000000000058 RBX: ffff8801c8fc7a90 RCX: 0000000000000000 [ 43.100710] RDX: 0000000000000058 RSI: ffffffff815fbf41 RDI: ffffed0036097e3f [ 43.107961] RBP: ffff8801b04bf260 R08: ffff8801b0b2a700 R09: ffffed003b604f90 [ 43.115206] R10: ffffed003b604f90 R11: ffff8801db027c87 R12: ffff8801c8fc7a90 [ 43.122449] R13: ffff8801c8fc7a90 R14: dffffc0000000000 R15: 0000000000000000 [ 43.129705] FS: 0000000000b98880(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 [ 43.137904] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.143766] CR2: 000000000043fc30 CR3: 00000001afe8e000 CR4: 00000000001406f0 [ 43.151018] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.158264] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.165510] Call Trace: [ 43.168077] ? team_notify_peers_interval_set+0x12/0x80 [ 43.173416] team_nl_cmd_options_set+0x9ff/0x12b0 [ 43.178238] ? team_options_unregister+0x2a0/0x2a0 [ 43.183143] ? graph_lock+0x170/0x170 [ 43.186919] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 43.192086] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 43.197078] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.202591] ? nla_parse+0x358/0x4a0 [ 43.206285] ? __netlink_ns_capable+0x100/0x130 [ 43.210929] genl_family_rcv_msg+0x889/0x1120 [ 43.215405] ? genl_rcv+0x40/0x40 [ 43.218834] ? lock_downgrade+0x8e0/0x8e0 [ 43.222958] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 43.227951] ? kasan_check_read+0x11/0x20 [ 43.232072] ? lock_acquire+0x1dc/0x520 [ 43.236022] ? genl_rcv+0x19/0x40 [ 43.239454] genl_rcv_msg+0xc6/0x170 [ 43.243145] netlink_rcv_skb+0x172/0x440 [ 43.247184] ? genl_family_rcv_msg+0x1120/0x1120 [ 43.251917] ? netlink_ack+0xbc0/0xbc0 [ 43.255782] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 43.260947] ? netlink_skb_destructor+0x210/0x210 [ 43.265766] genl_rcv+0x28/0x40 [ 43.269022] netlink_unicast+0x58b/0x740 [ 43.273060] ? netlink_attachskb+0x970/0x970 [ 43.277443] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.282961] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 43.287952] ? security_netlink_send+0x88/0xb0 [ 43.292510] netlink_sendmsg+0x9f0/0xfa0 [ 43.296548] ? netlink_unicast+0x740/0x740 [ 43.300766] ? security_socket_sendmsg+0x94/0xc0 [ 43.305495] ? netlink_unicast+0x740/0x740 [ 43.309706] sock_sendmsg+0xd5/0x120 [ 43.313397] ___sys_sendmsg+0x805/0x940 [ 43.317346] ? compat_ifr_data_ioctl+0x170/0x170 [ 43.322085] ? kasan_check_read+0x11/0x20 [ 43.326216] ? copy_msghdr_from_user+0x560/0x560 [ 43.330945] ? graph_lock+0x170/0x170 [ 43.334719] ? rcu_is_watching+0x85/0x140 [ 43.338848] ? mntput_no_expire+0x186/0xba0 [ 43.343145] ? dentry_kill+0xce/0x5a0 [ 43.346926] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.352439] ? __fget_light+0x2ef/0x430 [ 43.356390] ? fget_raw+0x20/0x20 [ 43.359817] ? dlci_ioctl_set+0x40/0x40 [ 43.363771] ? lock_downgrade+0x8e0/0x8e0 [ 43.367902] ? dlci_ioctl_set+0x40/0x40 [ 43.371854] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 43.377365] ? sockfd_lookup_light+0xc5/0x160 [ 43.381837] __sys_sendmsg+0x115/0x270 [ 43.385700] ? SyS_shutdown+0x30/0x30 [ 43.389474] ? task_work_run+0x227/0x290 [ 43.393510] ? task_work_cancel+0x240/0x240 [ 43.397810] ? exit_to_usermode_loop+0x87/0x310 [ 43.402458] ? ksys_ioctl+0x81/0xd0 [ 43.406061] SyS_sendmsg+0x29/0x30 [ 43.409576] ? __sys_sendmsg+0x270/0x270 [ 43.413613] do_syscall_64+0x29e/0x9d0 [ 43.417881] ? vmalloc_sync_all+0x30/0x30 [ 43.422006] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 43.426737] ? syscall_return_slowpath+0x5c0/0x5c0 [ 43.431647] ? syscall_return_slowpath+0x30f/0x5c0 [ 43.436552] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 43.441894] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.446713] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 43.451878] RIP: 0033:0x4458b9 [ 43.455042] RSP: 002b:00007ffd1d4a7278 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 43.462725] RAX: ffffffffffffffda RBX: 000000000000001b RCX: 00000000004458b9 [ 43.469977] RDX: 0000000000000010 RSI: 0000000020000d00 RDI: 0000000000000004 [ 43.477221] RBP: 00000000004a74ed R08: 0000000000000000 R09: 0000000000000000 [ 43.484464] R10: 0000000000000000 R11: 0000000000000213 R12: 00007ffd1d4a7348 [ 43.491708] R13: 0000000000402a60 R14: 0000000000000000 R15: 0000000000000000 [ 43.498951] Code: 75 e8 eb a9 48 89 f7 48 89 75 e8 e8 d1 85 7b fe 48 8b 75 e8 eb bb 48 89 f2 48 89 d9 4c 89 e6 48 c7 c7 a0 84 d8 87 e8 ea 67 28 fe <0f> 0b 0f 1f 40 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 [ 43.518079] RIP: __list_add_valid+0xaa/0xb0 RSP: ffff8801b04bf248 [ 43.524330] ---[ end trace b4f71d7dd7ca6d10 ]--- [ 43.529072] Kernel panic - not syncing: Fatal exception [ 43.534813] Dumping ftrace buffer: [ 43.538329] (ftrace buffer empty) [ 43.542015] Kernel Offset: disabled [ 43.545628] Rebooting in 86400 seconds..