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 'ci-upstream-net-kasan-gce-1,10.128.0.41' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   31.894258] ------------[ cut here ]------------
[   31.899060] WARNING: CPU: 0 PID: 2983 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   31.907121] Kernel panic - not syncing: panic_on_warn set ...
[   31.907121] 
[   31.914462] CPU: 0 PID: 2983 Comm: syzkaller620696 Not tainted 4.14.0-rc4+ #80
[   31.921790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   31.931110] Call Trace:
[   31.933668]  dump_stack+0x194/0x257
[   31.937267]  ? arch_local_irq_restore+0x53/0x53
[   31.941918]  panic+0x1e4/0x417
[   31.945081]  ? __warn+0x1d9/0x1d9
[   31.948502]  ? show_regs_print_info+0x65/0x65
[   31.952981]  ? kmalloc_slab+0x5d/0x70
[   31.956753]  __warn+0x1c4/0x1d9
[   31.960003]  ? kmalloc_slab+0x5d/0x70
[   31.963775]  report_bug+0x211/0x2d0
[   31.967377]  fixup_bug+0x40/0x90
[   31.970713]  do_trap+0x260/0x390
[   31.974056]  do_error_trap+0x120/0x390
[   31.977917]  ? do_trap+0x390/0x390
[   31.981436]  ? kmalloc_slab+0x5d/0x70
[   31.985223]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   31.990040]  do_invalid_op+0x1b/0x20
[   31.993723]  invalid_op+0x18/0x20
[   31.997149] RIP: 0010:kmalloc_slab+0x5d/0x70
[   32.001526] RSP: 0018:ffff8801bfc874b0 EFLAGS: 00010246
[   32.006863] RAX: 0000000000000000 RBX: ffff8801bfc87748 RCX: 0000000000000007
[   32.014101] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   32.021338] RBP: ffff8801bfc874b0 R08: ffff8801d79e1000 R09: ffff8801bfc87b10
[   32.028578] R10: ffff8801d0618040 R11: 0000000000000000 R12: ffff8801bfc87ab0
[   32.035817] R13: ffff8801bfc87b10 R14: 00000000014080c0 R15: ffff8801d7adf000
[   32.043079]  __kmalloc+0x25/0x760
[   32.046509]  ? inet6_dump_ifaddr+0x30/0x30
[   32.050712]  ? ip6_setup_cork+0x1e8/0x15c0
[   32.054921]  ip6_setup_cork+0x1e8/0x15c0
[   32.058958]  ? __ip6_append_data.isra.43+0x3340/0x3340
[   32.064222]  ip6_make_skb+0x282/0x530
[   32.067996]  ? ip_reply_glue_bits+0xb0/0xb0
[   32.072292]  ? ip6_push_pending_frames+0xe0/0xe0
[   32.077016]  ? ip6_dst_hoplimit+0x10d/0x420
[   32.081307]  ? ip6_route_output_flags+0x1f1/0x2b0
[   32.086130]  ? __lock_is_held+0xbc/0x140
[   32.090173]  ? ip6_dst_hoplimit+0xc1/0x420
[   32.094379]  ? ip6_find_1stfragopt+0x240/0x240
[   32.098942]  udpv6_sendmsg+0x2769/0x3380
[   32.102979]  ? ip_reply_glue_bits+0xb0/0xb0
[   32.107281]  ? udpv6_setsockopt+0x80/0x80
[   32.111395]  ? find_held_lock+0x39/0x1d0
[   32.115439]  ? lock_downgrade+0x990/0x990
[   32.119569]  ? lock_downgrade+0x990/0x990
[   32.123696]  ? lock_release+0xd70/0xd70
[   32.127649]  ? do_raw_spin_trylock+0x190/0x190
[   32.132205]  ? __local_bh_enable_ip+0x9d/0x160
[   32.136758]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   32.141743]  ? release_sock+0x1d4/0x2a0
[   32.145690]  ? _raw_spin_unlock_bh+0x30/0x40
[   32.150065]  ? release_sock+0x1d4/0x2a0
[   32.154017]  ? udp_v6_get_port+0x9c/0xc0
[   32.158053]  inet_sendmsg+0x11f/0x5e0
[   32.161823]  ? inet_sendmsg+0x11f/0x5e0
[   32.165763]  ? __might_sleep+0x95/0x190
[   32.169708]  ? inet_recvmsg+0x5f0/0x5f0
[   32.173829]  ? selinux_socket_sendmsg+0x36/0x40
[   32.178467]  ? security_socket_sendmsg+0x89/0xb0
[   32.183190]  ? inet_recvmsg+0x5f0/0x5f0
[   32.187135]  sock_sendmsg+0xca/0x110
[   32.190822]  SYSC_sendto+0x358/0x5a0
[   32.194510]  ? SYSC_connect+0x480/0x480
[   32.198464]  ? mm_fault_error+0x2c0/0x2c0
[   32.202586]  ? ipv6_setsockopt+0xa8/0x150
[   32.206712]  ? __do_page_fault+0xd60/0xd60
[   32.210928]  ? lockdep_sys_exit+0x47/0xf0
[   32.215042]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   32.219856]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   32.224845]  SyS_sendto+0x40/0x50
[   32.228270]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   32.232991] RIP: 0033:0x43fea9
[   32.236149] RSP: 002b:00007ffd85ce0b88 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   32.243828] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   32.251065] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   32.258302] RBP: 0000000000000086 R08: 0000000020e0afe4 R09: 000000000000001c
[   32.265539] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   32.272776] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   32.280169] Dumping ftrace buffer:
[   32.283710]    (ftrace buffer empty)
[   32.287389] Kernel Offset: disabled
[   32.290992] Rebooting in 86400 seconds..