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 '10.128.0.35' (ECDSA) to the list of known hosts. net.ipv6.conf.syz_tun.accept_dad = 0 syzkaller login: [ 29.029404] IPVS: ftp: loaded support on port[0] = 21 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 29.233357] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.239874] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.247283] device bridge_slave_0 entered promiscuous mode [ 29.264368] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.270939] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.278053] device bridge_slave_1 entered promiscuous mode [ 29.293212] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 29.308905] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 29.348270] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 29.366295] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 29.425282] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 29.432566] team0: Port device team_slave_0 added [ 29.446497] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 29.453600] team0: Port device team_slave_1 added [ 29.468068] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 29.483850] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 29.499718] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 29.516933] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 29.634254] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.640752] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.647608] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.653992] bridge0: port 1(bridge_slave_0) entered forwarding state RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument [ 30.063802] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 30.069948] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.112806] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 30.152582] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 30.160409] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 30.195347] 8021q: adding VLAN 0 to HW filter on device team0 executing program [ 30.419433] netlink: 'syzkaller211959': attribute type 3 has an invalid length. [ 30.427086] netlink: 'syzkaller211959': attribute type 3 has an invalid length. [ 30.434658] list_add double add: new=ffff8801d39f2890, prev=ffff8801b169f3a0, next=ffff8801d39f2890. [ 30.444099] ------------[ cut here ]------------ [ 30.448843] kernel BUG at lib/list_debug.c:31! [ 30.453497] invalid opcode: 0000 [#1] SMP KASAN [ 30.458156] Dumping ftrace buffer: [ 30.461677] (ftrace buffer empty) [ 30.465387] Modules linked in: [ 30.468567] CPU: 0 PID: 4482 Comm: syzkaller211959 Not tainted 4.16.0+ #3 [ 30.475472] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.484821] RIP: 0010:__list_add_valid+0xaa/0xb0 [ 30.489558] RSP: 0018:ffff8801b169f248 EFLAGS: 00010286 [ 30.494908] RAX: 0000000000000058 RBX: ffff8801d39f2890 RCX: 0000000000000000 [ 30.502163] RDX: 0000000000000058 RSI: ffffffff815fa5a1 RDI: ffffed00362d3e3f [ 30.509466] RBP: ffff8801b169f260 R08: ffff8801ad0946c0 R09: ffffed003b604f90 [ 30.516719] R10: ffffed003b604f90 R11: ffff8801db027c87 R12: ffff8801d39f2890 [ 30.523981] R13: ffff8801d39f2890 R14: dffffc0000000000 R15: 0000000000000000 [ 30.531254] FS: 0000000001069880(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 [ 30.539463] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.545326] CR2: 0000000020000180 CR3: 00000001ad7be000 CR4: 00000000001406f0 [ 30.552583] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.559864] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.567116] Call Trace: [ 30.569691] ? team_mcast_rejoin_count_set+0x12/0x80 [ 30.574781] team_nl_cmd_options_set+0x9ff/0x12b0 [ 30.579612] ? team_options_unregister+0x2a0/0x2a0 [ 30.584527] ? graph_lock+0x170/0x170 [ 30.588310] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 30.593482] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 30.598482] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.604002] ? nla_parse+0x358/0x4a0 [ 30.607705] ? __netlink_ns_capable+0x100/0x130 [ 30.612359] genl_family_rcv_msg+0x889/0x1120 [ 30.616854] ? genl_rcv+0x40/0x40 [ 30.620295] ? lock_downgrade+0x8e0/0x8e0 [ 30.624428] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 30.629428] ? kasan_check_read+0x11/0x20 [ 30.633558] ? lock_acquire+0x1dc/0x520 [ 30.637516] ? genl_rcv+0x19/0x40 [ 30.640968] genl_rcv_msg+0xc6/0x170 [ 30.644671] netlink_rcv_skb+0x172/0x440 [ 30.648720] ? genl_family_rcv_msg+0x1120/0x1120 [ 30.653475] ? netlink_ack+0xbc0/0xbc0 [ 30.657345] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 30.662520] ? netlink_skb_destructor+0x210/0x210 [ 30.667347] genl_rcv+0x28/0x40 [ 30.670612] netlink_unicast+0x58b/0x740 [ 30.674665] ? netlink_attachskb+0x970/0x970 [ 30.679055] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.684576] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 30.689579] netlink_sendmsg+0x9f0/0xfa0 [ 30.693628] ? netlink_unicast+0x740/0x740 [ 30.697847] ? security_socket_sendmsg+0x94/0xc0 [ 30.702585] ? netlink_unicast+0x740/0x740 [ 30.706804] sock_sendmsg+0xd5/0x120 [ 30.710508] ___sys_sendmsg+0x805/0x940 [ 30.714469] ? compat_ifr_data_ioctl+0x170/0x170 [ 30.719213] ? kasan_check_read+0x11/0x20 [ 30.723342] ? copy_msghdr_from_user+0x560/0x560 [ 30.728081] ? graph_lock+0x170/0x170 [ 30.731867] ? rcu_is_watching+0x85/0x140 [ 30.736005] ? mntput_no_expire+0x186/0xba0 [ 30.740309] ? dentry_kill+0xce/0x5a0 [ 30.744097] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.749617] ? __fget_light+0x2ef/0x430 [ 30.753574] ? fget_raw+0x20/0x20 [ 30.757009] ? dlci_ioctl_set+0x40/0x40 [ 30.760969] ? lock_downgrade+0x8e0/0x8e0 [ 30.765115] ? dlci_ioctl_set+0x40/0x40 [ 30.769077] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 30.774717] ? sockfd_lookup_light+0xc5/0x160 [ 30.779210] __sys_sendmsg+0x115/0x270 [ 30.783088] ? SyS_shutdown+0x30/0x30 [ 30.786877] ? task_work_run+0x227/0x290 [ 30.790929] ? task_work_cancel+0x240/0x240 [ 30.795237] ? exit_to_usermode_loop+0x87/0x310 [ 30.799894] ? ksys_ioctl+0x81/0xd0 [ 30.803505] SyS_sendmsg+0x29/0x30 [ 30.807030] ? __sys_sendmsg+0x270/0x270 [ 30.811075] do_syscall_64+0x29e/0x9d0 [ 30.814946] ? vmalloc_sync_all+0x30/0x30 [ 30.819075] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.823943] ? syscall_return_slowpath+0x5c0/0x5c0 [ 30.828873] ? syscall_return_slowpath+0x30f/0x5c0 [ 30.833795] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 30.839150] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.843986] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 30.849163] RIP: 0033:0x447039 [ 30.852336] RSP: 002b:00007ffc1ab20408 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 30.860066] RAX: ffffffffffffffda RBX: 00000000004a9218 RCX: 0000000000447039 [ 30.867445] RDX: 0000000024008040 RSI: 0000000020000300 RDI: 0000000000000003 [ 30.874708] RBP: 0000000020000a74 R08: 00000000004a90b0 R09: 0000000000000000 [ 30.881962] R10: 00000000004a9178 R11: 0000000000000213 R12: 0000000000404150 [ 30.889217] R13: 00000000004041e0 R14: 0000000000000000 R15: 0000000000000000 [ 30.896470] Code: 75 e8 eb a9 48 89 f7 48 89 75 e8 e8 61 f6 7a fe 48 8b 75 e8 eb bb 48 89 f2 48 89 d9 4c 89 e6 48 c7 c7 a0 c2 d8 87 e8 4a d0 27 fe <0f> 0b 0f 1f 40 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 [ 30.917626] RIP: __list_add_valid+0xaa/0xb0 RSP: ffff8801b169f248 [ 30.924804] ---[ end trace 2f467a250cb68ba4 ]--- [ 30.929600] Kernel panic - not syncing: Fatal exception [ 30.935470] Dumping ftrace buffer: [ 30.938990] (ftrace buffer empty) [ 30.942682] Kernel Offset: disabled [ 30.946291] Rebooting in 86400 seconds..