[....] 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. [ 28.808855] kauditd_printk_skb: 8 callbacks suppressed [ 28.808870] audit: type=1800 audit(1545315296.351:29): pid=5883 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 [ 28.834371] audit: type=1800 audit(1545315296.351:30): pid=5883 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 '10.128.0.131' (ECDSA) to the list of known hosts. syzkaller login: [ 40.198123] IPVS: ftp: loaded support on port[0] = 21 [ 40.359405] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.366053] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.373319] device bridge_slave_0 entered promiscuous mode [ 40.392215] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.398638] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.406491] device bridge_slave_1 entered promiscuous mode [ 40.424317] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 40.442125] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 40.492564] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 40.511785] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 40.588702] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 40.595943] team0: Port device team_slave_0 added [ 40.612165] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 40.619368] team0: Port device team_slave_1 added [ 40.635500] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 40.658956] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 40.678227] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 40.697386] 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 [ 40.839837] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.846257] bridge0: port 2(bridge_slave_1) entered forwarding state [ 40.853228] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.859591] 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 [ 41.362311] 8021q: adding VLAN 0 to HW filter on device bond0 [ 41.413580] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 41.465015] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 41.471214] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 41.478756] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 41.525431] 8021q: adding VLAN 0 to HW filter on device team0 executing program [ 41.806382] IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready [ 41.814235] device bridge_slave_0 left promiscuous mode [ 41.819985] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.880506] device bridge_slave_1 left promiscuous mode [ 41.885968] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.929291] bond0: Releasing backup interface bond_slave_0 [ 41.988946] bond0: Releasing backup interface bond_slave_1 [ 42.032233] team0: Port device team_slave_0 removed [ 42.039009] team0: Port device team_slave_1 removed [ 42.049445] netlink: 'syz-executor055': attribute type 3 has an invalid length. [ 42.057100] netlink: 'syz-executor055': attribute type 3 has an invalid length. [ 42.064534] netlink: 'syz-executor055': attribute type 3 has an invalid length. [ 42.072218] netlink: 'syz-executor055': attribute type 3 has an invalid length. [ 42.079943] team0: Mode changed to "activebackup" [ 42.084790] kasan: CONFIG_KASAN_INLINE enabled [ 42.089539] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.097464] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 42.103696] CPU: 0 PID: 6038 Comm: syz-executor055 Not tainted 4.20.0-rc6+ #355 [ 42.111168] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.120510] RIP: 0010:team_nl_cmd_options_set+0xa2d/0x1370 [ 42.126110] Code: 8b 74 24 38 75 13 e9 eb 05 00 00 e8 9d b7 df fc 49 39 dc 0f 84 dd 05 00 00 e8 8f b7 df 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 [ 42.145133] RSP: 0018:ffff8881c214f270 EFLAGS: 00010203 [ 42.150477] RAX: 000000060dac2cae RBX: ffff8881cc211180 RCX: ffffffff849fcc37 [ 42.157726] RDX: 0000000000000000 RSI: ffffffff849fccb1 RDI: 000000306d616574 [ 42.164976] RBP: ffff8881c214f4d0 R08: ffff8881c1826180 R09: ffffed103b585020 [ 42.172227] R10: ffffed103b585020 R11: ffff8881dac28107 R12: 000000306d616564 [ 42.179476] R13: ffff8881cc211610 R14: ffff8881c214f360 R15: dffffc0000000000 [ 42.186727] FS: 00000000011ae880(0000) GS:ffff8881dac00000(0000) knlGS:0000000000000000 [ 42.194934] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.200793] CR2: 0000000020000040 CR3: 00000001b3535000 CR4: 00000000001406f0 [ 42.208046] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.215298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.222548] Call Trace: [ 42.225125] ? team_nl_cmd_options_get+0x480/0x480 [ 42.230037] ? nla_memcmp+0x90/0x90 [ 42.233645] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 42.239166] ? apparmor_cred_transfer+0x590/0x590 [ 42.243988] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.249507] ? cap_capable+0x1f9/0x260 [ 42.253414] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.258945] genl_family_rcv_msg+0x8a7/0x11a0 [ 42.263426] ? genl_unregister_family+0x8a0/0x8a0 [ 42.268253] ? lock_downgrade+0x900/0x900 [ 42.272381] ? check_preemption_disabled+0x48/0x280 [ 42.277379] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 42.282294] ? kasan_check_read+0x11/0x20 [ 42.286420] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 42.291706] ? rcu_softirq_qs+0x20/0x20 [ 42.295665] genl_rcv_msg+0xc6/0x168 [ 42.299367] netlink_rcv_skb+0x16c/0x430 [ 42.303409] ? genl_family_rcv_msg+0x11a0/0x11a0 [ 42.308161] ? netlink_ack+0xb70/0xb70 [ 42.312030] ? down_read+0x8d/0x120 [ 42.315639] genl_rcv+0x28/0x40 [ 42.318939] netlink_unicast+0x59f/0x750 [ 42.322981] ? netlink_attachskb+0x9a0/0x9a0 [ 42.327372] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.332907] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 42.337933] netlink_sendmsg+0xa18/0xfc0 [ 42.341975] ? netlink_unicast+0x750/0x750 [ 42.346190] ? aa_sock_msg_perm.isra.14+0xba/0x160 [ 42.351099] ? apparmor_socket_sendmsg+0x29/0x30 [ 42.355834] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.361356] ? security_socket_sendmsg+0x94/0xc0 [ 42.366091] ? netlink_unicast+0x750/0x750 [ 42.370309] sock_sendmsg+0xd5/0x120 [ 42.374004] ___sys_sendmsg+0x7fd/0x930 [ 42.377962] ? copy_msghdr_from_user+0x580/0x580 [ 42.382703] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 42.387875] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.393406] ? __fget_light+0x2e9/0x430 [ 42.397362] ? fget_raw+0x20/0x20 [ 42.400834] ? task_work_run+0x1af/0x2a0 [ 42.404888] ? _raw_spin_unlock_irq+0x27/0x80 [ 42.409367] ? _raw_spin_unlock_irq+0x27/0x80 [ 42.413854] ? dlci_ioctl_set+0x40/0x40 [ 42.417823] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.423345] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 42.428864] ? sockfd_lookup_light+0xc5/0x160 [ 42.433349] __sys_sendmsg+0x11d/0x280 [ 42.437233] ? __ia32_sys_shutdown+0x80/0x80 [ 42.441624] ? do_syscall_64+0x6be/0x820 [ 42.445667] ? trace_hardirqs_on+0x310/0x310 [ 42.450055] ? do_syscall_64+0x9a/0x820 [ 42.454010] ? do_syscall_64+0x9a/0x820 [ 42.457969] ? trace_hardirqs_off_caller+0x310/0x310 [ 42.463050] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.468570] ? ksys_ioctl+0x81/0xd0 [ 42.472178] __x64_sys_sendmsg+0x78/0xb0 [ 42.476223] do_syscall_64+0x1b9/0x820 [ 42.480093] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 42.485439] ? syscall_return_slowpath+0x5e0/0x5e0 [ 42.490350] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.495173] ? trace_hardirqs_on_caller+0x310/0x310 [ 42.500188] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 42.505186] ? prepare_exit_to_usermode+0x291/0x3b0 [ 42.510187] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.515014] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.520186] RIP: 0033:0x446ec9 [ 42.523363] 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 [ 42.542246] RSP: 002b:00007ffcd94bbef8 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 42.549932] RAX: ffffffffffffffda RBX: 0000000020000e94 RCX: 0000000000446ec9 [ 42.557195] RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000004 [ 42.564459] RBP: 00000000004a8ac0 R08: 00000000004a8ae8 R09: 0000000000000100 [ 42.571706] R10: 0000000020000ff8 R11: 0000000000000213 R12: 00000000004a8b60 [ 42.578967] R13: 00000000004042e0 R14: 0000000000000000 R15: 0000000000000000 [ 42.586219] Modules linked in: [ 42.591029] ---[ end trace 492ba1acb0508bf6 ]--- [ 42.595796] RIP: 0010:team_nl_cmd_options_set+0xa2d/0x1370 [ 42.601567] Code: 8b 74 24 38 75 13 e9 eb 05 00 00 e8 9d b7 df fc 49 39 dc 0f 84 dd 05 00 00 e8 8f b7 df 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 [ 42.620522] RSP: 0018:ffff8881c214f270 EFLAGS: 00010203 [ 42.625887] RAX: 000000060dac2cae RBX: ffff8881cc211180 RCX: ffffffff849fcc37 [ 42.633204] RDX: 0000000000000000 RSI: ffffffff849fccb1 RDI: 000000306d616574 [ 42.640489] RBP: ffff8881c214f4d0 R08: ffff8881c1826180 R09: ffffed103b585020 [ 42.647809] R10: ffffed103b585020 R11: ffff8881dac28107 R12: 000000306d616564 [ 42.655084] R13: ffff8881cc211610 R14: ffff8881c214f360 R15: dffffc0000000000 [ 42.662416] FS: 00000000011ae880(0000) GS:ffff8881dac00000(0000) knlGS:0000000000000000 [ 42.670716] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.676589] CR2: 0000000020000040 CR3: 00000001b3535000 CR4: 00000000001406f0 [ 42.684032] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.691341] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.698627] Kernel panic - not syncing: Fatal exception [ 42.704853] Kernel Offset: disabled [ 42.708493] Rebooting in 86400 seconds..