[info] Using makefile-style concurrent boot in runlevel 2.
[   26.892667] audit: type=1800 audit(1542301236.999:21): pid=5912 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0
[....] 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 '10.128.0.5' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   39.651408] netlink: 'syz-executor556': attribute type 3 has an invalid length.
[   39.658997] netlink: 'syz-executor556': attribute type 2 has an invalid length.
[   39.667008] WARNING: CPU: 1 PID: 6065 at net/netfilter/nfnetlink_cttimeout.c:478 cttimeout_default_get+0x1df/0xb30
[   39.677587] Kernel panic - not syncing: panic_on_warn set ...
[   39.683457] CPU: 1 PID: 6065 Comm: syz-executor556 Not tainted 4.20.0-rc2+ #335
[   39.690931] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   39.700267] Call Trace:
[   39.702846]  dump_stack+0x244/0x39d
[   39.706473]  ? dump_stack_print_info.cold.1+0x20/0x20
[   39.711653]  panic+0x2ad/0x55c
[   39.714833]  ? add_taint.cold.5+0x16/0x16
[   39.718966]  ? __warn.cold.8+0x5/0x45
[   39.722751]  ? __warn+0xe8/0x1d0
[   39.726103]  ? cttimeout_default_get+0x1df/0xb30
[   39.730841]  __warn.cold.8+0x20/0x45
[   39.734539]  ? rcu_softirq_qs+0x20/0x20
[   39.738540]  ? cttimeout_default_get+0x1df/0xb30
[   39.743285]  report_bug+0x254/0x2d0
[   39.746901]  do_error_trap+0x11b/0x200
[   39.750775]  do_invalid_op+0x36/0x40
[   39.754475]  ? cttimeout_default_get+0x1df/0xb30
[   39.759218]  invalid_op+0x14/0x20
[   39.762654] RIP: 0010:cttimeout_default_get+0x1df/0xb30
[   39.768004] Code: 00 0f 87 8d 00 00 00 41 80 ff 06 0f 84 94 07 00 00 41 80 ff 11 0f 84 6c 07 00 00 41 80 ff 01 0f 84 44 07 00 00 e8 91 f1 20 fb <0f> 0b 41 bd a1 ff ff ff eb 06 41 bd a1 ff ff ff e8 7c f1 20 fb 48
[   39.786894] RSP: 0018:ffff8881bc94f2b0 EFLAGS: 00010293
[   39.792241] RAX: ffff8881bcb30580 RBX: ffffffff88bf58e0 RCX: ffffffff865e961c
[   39.799504] RDX: 0000000000000000 RSI: ffffffff865e964f RDI: 0000000000000001
[   39.806762] RBP: ffff8881bc94f3c0 R08: ffff8881bcb30580 R09: ffffed103b5e5b67
[   39.814031] R10: 0000000000000002 R11: ffff8881daf2db3b R12: 0000000000000088
[   39.821283] R13: ffff8881bf6ad7c0 R14: 0000000000000017 R15: 0000000000000088
[   39.828571]  ? cttimeout_default_get+0x1ac/0xb30
[   39.833325]  ? cttimeout_default_get+0x1df/0xb30
[   39.838071]  ? lock_downgrade+0x900/0x900
[   39.842203]  ? check_preemption_disabled+0x48/0x280
[   39.847205]  ? cttimeout_new_timeout+0x8c0/0x8c0
[   39.851945]  ? __lock_is_held+0xb5/0x140
[   39.855997]  ? cttimeout_new_timeout+0x8c0/0x8c0
[   39.860749]  nfnetlink_rcv_msg+0xdd3/0x10c0
[   39.865063]  ? nfnetlink_bind+0x3b0/0x3b0
[   39.869196]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   39.874719]  ? refcount_sub_and_test_checked+0x203/0x310
[   39.880156]  ? refcount_inc_not_zero_checked+0x2f0/0x2f0
[   39.885593]  ? netlink_deliver_tap+0x32e/0xf80
[   39.890159]  ? lock_downgrade+0x900/0x900
[   39.894291]  ? check_preemption_disabled+0x48/0x280
[   39.899316]  ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[   39.904858]  ? apparmor_capable+0x355/0x6c0
[   39.909173]  ? rcu_softirq_qs+0x20/0x20
[   39.913135]  ? apparmor_cred_transfer+0x590/0x590
[   39.917961]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   39.923504]  netlink_rcv_skb+0x172/0x440
[   39.927551]  ? nfnetlink_bind+0x3b0/0x3b0
[   39.931680]  ? netlink_ack+0xb80/0xb80
[   39.935559]  ? __netlink_ns_capable+0x100/0x130
[   39.940213]  nfnetlink_rcv+0x1c0/0x4d0
[   39.944088]  ? nfnetlink_rcv_batch+0x19b0/0x19b0
[   39.948829]  ? kasan_check_write+0x14/0x20
[   39.953050]  netlink_unicast+0x5a5/0x760
[   39.957099]  ? netlink_attachskb+0x9a0/0x9a0
[   39.961492]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   39.967018]  ? __sanitizer_cov_trace_cmp4+0x16/0x20
[   39.972032]  netlink_sendmsg+0xa18/0xfc0
[   39.976116]  ? netlink_unicast+0x760/0x760
[   39.980335]  ? aa_sock_msg_perm.isra.14+0xba/0x160
[   39.985274]  ? apparmor_socket_sendmsg+0x29/0x30
[   39.990023]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   39.995567]  ? security_socket_sendmsg+0x94/0xc0
[   40.000309]  ? netlink_unicast+0x760/0x760
[   40.004529]  sock_sendmsg+0xd5/0x120
[   40.008226]  ___sys_sendmsg+0x7fd/0x930
[   40.012185]  ? find_held_lock+0x36/0x1c0
[   40.016235]  ? copy_msghdr_from_user+0x580/0x580
[   40.021011]  ? zap_class+0x640/0x640
[   40.024714]  ? zap_class+0x640/0x640
[   40.028415]  ? zap_class+0x640/0x640
[   40.032122]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   40.037645]  ? __fget_light+0x2e9/0x430
[   40.041604]  ? fget_raw+0x20/0x20
[   40.045051]  ? __do_page_fault+0x620/0xe60
[   40.049270]  ? lock_downgrade+0x900/0x900
[   40.053403]  ? rcu_read_unlock_special+0x1c0/0x1c0
[   40.058319]  ? kasan_check_read+0x11/0x20
[   40.062453]  ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[   40.067973]  ? sockfd_lookup_light+0xc5/0x160
[   40.072463]  __sys_sendmsg+0x11d/0x280
[   40.076339]  ? __ia32_sys_shutdown+0x80/0x80
[   40.080736]  ? up_read_non_owner+0x100/0x100
[   40.085135]  ? do_syscall_64+0x9a/0x820
[   40.089097]  ? do_syscall_64+0x9a/0x820
[   40.093073]  ? trace_hardirqs_off_caller+0x310/0x310
[   40.098171]  __x64_sys_sendmsg+0x78/0xb0
[   40.102219]  do_syscall_64+0x1b9/0x820
[   40.106091]  ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
[   40.111526]  ? syscall_return_slowpath+0x5e0/0x5e0
[   40.116440]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   40.121268]  ? trace_hardirqs_on_caller+0x310/0x310
[   40.126294]  ? prepare_exit_to_usermode+0x3b0/0x3b0
[   40.131298]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   40.136821]  ? prepare_exit_to_usermode+0x291/0x3b0
[   40.141822]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   40.146654]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   40.151828] RIP: 0033:0x4400d9
[   40.155012] 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 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[   40.173910] RSP: 002b:00007fff3cd734f8 EFLAGS: 00000213 ORIG_RAX: 000000000000002e
[   40.181603] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400d9
[   40.188857] RDX: 0000000000000000 RSI: 0000000020dddfc8 RDI: 0000000000000003
[   40.196112] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
[   40.203364] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401960
[   40.210618] R13: 00000000004019f0 R14: 0000000000000000 R15: 0000000000000000
[   40.219262] Kernel Offset: disabled
[   40.222975] Rebooting in 86400 seconds..