[....] 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. [ 28.765182] kauditd_printk_skb: 7 callbacks suppressed [ 28.765196] audit: type=1800 audit(1545303743.753:29): pid=5893 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 28.792773] audit: type=1800 audit(1545303743.753:30): pid=5893 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.19' (ECDSA) to the list of known hosts. syzkaller login: [ 36.503515] IPVS: ftp: loaded support on port[0] = 21 [ 36.667258] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.673896] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.681054] device bridge_slave_0 entered promiscuous mode [ 36.699893] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.706481] bridge0: port 2(bridge_slave_1) entered disabled state [ 36.713416] device bridge_slave_1 entered promiscuous mode [ 36.730655] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 36.747585] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 36.796075] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 36.815173] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 36.889870] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 36.897302] team0: Port device team_slave_0 added [ 36.912859] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 36.920232] team0: Port device team_slave_1 added [ 36.937074] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 36.958364] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 36.976529] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 36.996263] 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 [ 37.139077] bridge0: port 2(bridge_slave_1) entered blocking state [ 37.145507] bridge0: port 2(bridge_slave_1) entered forwarding state [ 37.152231] bridge0: port 1(bridge_slave_0) entered blocking state [ 37.158628] 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 [ 37.650906] 8021q: adding VLAN 0 to HW filter on device bond0 [ 37.699974] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 37.758356] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 37.764559] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 37.771653] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 37.823983] 8021q: adding VLAN 0 to HW filter on device team0 executing program [ 38.103427] IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready [ 38.110953] device bridge_slave_0 left promiscuous mode [ 38.116531] bridge0: port 1(bridge_slave_0) entered disabled state [ 38.167592] device bridge_slave_1 left promiscuous mode [ 38.173020] bridge0: port 2(bridge_slave_1) entered disabled state [ 38.216722] bond0: Releasing backup interface bond_slave_0 [ 38.256913] bond0: Releasing backup interface bond_slave_1 [ 38.298933] team0: Port device team_slave_0 removed [ 38.305852] team0: Port device team_slave_1 removed [ 38.315970] netlink: 'syz-executor298': attribute type 3 has an invalid length. [ 38.323503] netlink: 'syz-executor298': attribute type 3 has an invalid length. [ 38.331135] netlink: 'syz-executor298': attribute type 3 has an invalid length. [ 38.338670] netlink: 'syz-executor298': attribute type 3 has an invalid length. [ 38.346419] team0: Mode changed to "activebackup" [ 38.351254] kasan: CONFIG_KASAN_INLINE enabled [ 38.355943] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 38.363301] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 38.369516] CPU: 0 PID: 6049 Comm: syz-executor298 Not tainted 4.20.0-rc7+ #379 [ 38.376939] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.386280] RIP: 0010:team_nl_cmd_options_set+0xa2d/0x1370 [ 38.391880] Code: 8b 74 24 38 75 13 e9 eb 05 00 00 e8 bd 28 e0 fc 49 39 dc 0f 84 dd 05 00 00 e8 af 28 e0 fc 49 8d 7c 24 10 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 0f 85 af 06 00 00 49 8b 44 24 10 4c 8d 60 f0 49 39 [ 38.410760] RSP: 0018:ffff8881cd7b7270 EFLAGS: 00010203 [ 38.416108] RAX: 000000060dac2cae RBX: ffff8881cc6e4680 RCX: ffffffff849f5b47 [ 38.423358] RDX: 0000000000000000 RSI: ffffffff849f5bc1 RDI: 000000306d616574 [ 38.430606] RBP: ffff8881cd7b74d0 R08: ffff8881c233e700 R09: ffffed103b5c3ef8 [ 38.437864] R10: ffffed103b5c3ef8 R11: ffff8881dae1f7c7 R12: 000000306d616564 [ 38.445142] R13: ffff8881cc6e4290 R14: ffff8881cd7b7360 R15: dffffc0000000000 [ 38.452392] FS: 0000000001fb1880(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 [ 38.460610] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.466471] CR2: 0000000020000040 CR3: 00000001c3a11000 CR4: 00000000001406f0 [ 38.473733] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.480998] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.488245] Call Trace: [ 38.490818] ? team_nl_cmd_options_get+0x480/0x480 [ 38.495741] ? nla_memcmp+0x90/0x90 [ 38.499367] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 38.504901] ? apparmor_cred_transfer+0x590/0x590 [ 38.509722] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.515239] ? cap_capable+0x1f9/0x260 [ 38.519117] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.524640] genl_family_rcv_msg+0x8a7/0x11a0 [ 38.529121] ? genl_unregister_family+0x8a0/0x8a0 [ 38.533943] ? lock_downgrade+0x900/0x900 [ 38.538070] ? check_preemption_disabled+0x48/0x280 [ 38.543681] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 38.548616] ? kasan_check_read+0x11/0x20 [ 38.552744] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 38.558028] ? rcu_softirq_qs+0x20/0x20 [ 38.561987] genl_rcv_msg+0xc6/0x168 [ 38.565678] netlink_rcv_skb+0x172/0x440 [ 38.569717] ? genl_family_rcv_msg+0x11a0/0x11a0 [ 38.574465] ? netlink_ack+0xb80/0xb80 [ 38.578333] ? down_read+0x8d/0x120 [ 38.581941] genl_rcv+0x28/0x40 [ 38.585199] netlink_unicast+0x5a5/0x760 [ 38.589245] ? netlink_attachskb+0x9a0/0x9a0 [ 38.593634] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.599150] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 38.604249] netlink_sendmsg+0xa18/0xfc0 [ 38.608335] ? netlink_unicast+0x760/0x760 [ 38.612548] ? aa_sock_msg_perm.isra.14+0xba/0x160 [ 38.617464] ? apparmor_socket_sendmsg+0x29/0x30 [ 38.622198] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.627723] ? security_socket_sendmsg+0x94/0xc0 [ 38.632458] ? netlink_unicast+0x760/0x760 [ 38.636673] sock_sendmsg+0xd5/0x120 [ 38.640382] ___sys_sendmsg+0x7fd/0x930 [ 38.644355] ? copy_msghdr_from_user+0x580/0x580 [ 38.649100] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 38.654271] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.659804] ? __fget_light+0x2e9/0x430 [ 38.663754] ? fget_raw+0x20/0x20 [ 38.667192] ? task_work_run+0x1af/0x2a0 [ 38.671350] ? _raw_spin_unlock_irq+0x27/0x80 [ 38.675824] ? _raw_spin_unlock_irq+0x27/0x80 [ 38.680346] ? dlci_ioctl_set+0x40/0x40 [ 38.684299] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.689830] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 38.695344] ? sockfd_lookup_light+0xc5/0x160 [ 38.699815] __sys_sendmsg+0x11d/0x280 [ 38.703679] ? __ia32_sys_shutdown+0x80/0x80 [ 38.708106] ? do_syscall_64+0x6be/0x820 [ 38.712149] ? trace_hardirqs_on+0x310/0x310 [ 38.716591] ? do_syscall_64+0x9a/0x820 [ 38.720559] ? do_syscall_64+0x9a/0x820 [ 38.724514] ? trace_hardirqs_off_caller+0x310/0x310 [ 38.729591] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.735112] ? ksys_ioctl+0x81/0xd0 [ 38.738716] __x64_sys_sendmsg+0x78/0xb0 [ 38.742786] do_syscall_64+0x1b9/0x820 [ 38.746662] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 38.752002] ? syscall_return_slowpath+0x5e0/0x5e0 [ 38.756919] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.761739] ? trace_hardirqs_on_caller+0x310/0x310 [ 38.766750] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 38.771758] ? prepare_exit_to_usermode+0x291/0x3b0 [ 38.776768] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.781604] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 38.786784] RIP: 0033:0x446ec9 [ 38.789968] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb ce fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 38.808861] RSP: 002b:00007ffccbcdfd38 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 38.816542] RAX: ffffffffffffffda RBX: 0000000020000e94 RCX: 0000000000446ec9 [ 38.823786] RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000004 [ 38.831030] RBP: 00000000004a8ac0 R08: 00000000004a8ae8 R09: 0000000000000100 [ 38.838289] R10: 0000000020000ff8 R11: 0000000000000213 R12: 00000000004a8b60 [ 38.845540] R13: 00000000004042e0 R14: 0000000000000000 R15: 0000000000000000 [ 38.852786] Modules linked in: [ 38.857439] ---[ end trace 28f5004eb9320097 ]--- [ 38.862204] RIP: 0010:team_nl_cmd_options_set+0xa2d/0x1370 [ 38.867969] Code: 8b 74 24 38 75 13 e9 eb 05 00 00 e8 bd 28 e0 fc 49 39 dc 0f 84 dd 05 00 00 e8 af 28 e0 fc 49 8d 7c 24 10 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 0f 85 af 06 00 00 49 8b 44 24 10 4c 8d 60 f0 49 39 [ 38.886917] RSP: 0018:ffff8881cd7b7270 EFLAGS: 00010203 [ 38.892287] RAX: 000000060dac2cae RBX: ffff8881cc6e4680 RCX: ffffffff849f5b47 [ 38.899669] RDX: 0000000000000000 RSI: ffffffff849f5bc1 RDI: 000000306d616574 [ 38.906973] RBP: ffff8881cd7b74d0 R08: ffff8881c233e700 R09: ffffed103b5c3ef8 [ 38.914281] R10: ffffed103b5c3ef8 R11: ffff8881dae1f7c7 R12: 000000306d616564 [ 38.921562] R13: ffff8881cc6e4290 R14: ffff8881cd7b7360 R15: dffffc0000000000 [ 38.928871] FS: 0000000001fb1880(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 [ 38.937203] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.943072] CR2: 0000000020000040 CR3: 00000001c3a11000 CR4: 00000000001406f0 [ 38.950527] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.957863] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.965169] Kernel panic - not syncing: Fatal exception [ 38.972291] Kernel Offset: disabled [ 38.975912] Rebooting in 86400 seconds..