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-8,10.128.0.37' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   47.410898] ------------[ cut here ]------------
[   47.415697] WARNING: CPU: 0 PID: 2980 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   47.423672] Kernel panic - not syncing: panic_on_warn set ...
[   47.423672] 
[   47.431005] CPU: 0 PID: 2980 Comm: syzkaller595365 Not tainted 4.14.0-rc4+ #80
[   47.438334] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.447655] Call Trace:
[   47.450210]  dump_stack+0x194/0x257
[   47.453809]  ? arch_local_irq_restore+0x53/0x53
[   47.458467]  panic+0x1e4/0x417
[   47.461628]  ? __warn+0x1d9/0x1d9
[   47.465051]  ? show_regs_print_info+0x65/0x65
[   47.469532]  ? kmalloc_slab+0x5d/0x70
[   47.473309]  __warn+0x1c4/0x1d9
[   47.476558]  ? kmalloc_slab+0x5d/0x70
[   47.480335]  report_bug+0x211/0x2d0
[   47.483937]  fixup_bug+0x40/0x90
[   47.487302]  do_trap+0x260/0x390
[   47.490643]  do_error_trap+0x120/0x390
[   47.494503]  ? do_trap+0x390/0x390
[   47.498010]  ? kmalloc_slab+0x5d/0x70
[   47.501790]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   47.506606]  do_invalid_op+0x1b/0x20
[   47.510289]  invalid_op+0x18/0x20
[   47.513709] RIP: 0010:kmalloc_slab+0x5d/0x70
[   47.518081] RSP: 0018:ffff8801ce0674b0 EFLAGS: 00010246
[   47.523412] RAX: 0000000000000000 RBX: ffff8801ce067748 RCX: 0000000000000007
[   47.530650] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   47.537889] RBP: ffff8801ce0674b0 R08: ffff8801d757c700 R09: ffff8801ce067b10
[   47.545126] R10: ffff8801ce5fe340 R11: 0000000000000000 R12: ffff8801ce067ab0
[   47.552364] R13: ffff8801ce067b10 R14: 00000000014080c0 R15: ffff8801cf6967c0
[   47.559622]  __kmalloc+0x25/0x760
[   47.563050]  ? inet6_dump_ifaddr+0x30/0x30
[   47.567256]  ? ip6_setup_cork+0x1e8/0x15c0
[   47.571467]  ip6_setup_cork+0x1e8/0x15c0
[   47.575503]  ? __ip6_append_data.isra.43+0x3340/0x3340
[   47.580757]  ip6_make_skb+0x282/0x530
[   47.584528]  ? ip_reply_glue_bits+0xb0/0xb0
[   47.588820]  ? ip6_push_pending_frames+0xe0/0xe0
[   47.593545]  ? ip6_dst_hoplimit+0x10d/0x420
[   47.597839]  ? ip6_route_output_flags+0x1f1/0x2b0
[   47.602665]  ? __lock_is_held+0xbc/0x140
[   47.606709]  ? ip6_dst_hoplimit+0xc1/0x420
[   47.610915]  ? ip6_find_1stfragopt+0x240/0x240
[   47.615474]  udpv6_sendmsg+0x2769/0x3380
[   47.619505]  ? ip_reply_glue_bits+0xb0/0xb0
[   47.623809]  ? udpv6_setsockopt+0x80/0x80
[   47.627923]  ? find_held_lock+0x39/0x1d0
[   47.631962]  ? lock_downgrade+0x990/0x990
[   47.636079]  ? lock_downgrade+0x990/0x990
[   47.640197]  ? lock_release+0xd70/0xd70
[   47.644150]  ? do_raw_spin_trylock+0x190/0x190
[   47.648706]  ? __local_bh_enable_ip+0x9d/0x160
[   47.653263]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   47.658250]  ? release_sock+0x1d4/0x2a0
[   47.662199]  ? _raw_spin_unlock_bh+0x30/0x40
[   47.666575]  ? release_sock+0x1d4/0x2a0
[   47.670953]  ? udp_v6_get_port+0x9c/0xc0
[   47.674991]  inet_sendmsg+0x11f/0x5e0
[   47.678757]  ? inet_sendmsg+0x11f/0x5e0
[   47.682700]  ? __might_sleep+0x95/0x190
[   47.686646]  ? inet_recvmsg+0x5f0/0x5f0
[   47.690591]  ? selinux_socket_sendmsg+0x36/0x40
[   47.695232]  ? security_socket_sendmsg+0x89/0xb0
[   47.699956]  ? inet_recvmsg+0x5f0/0x5f0
[   47.703902]  sock_sendmsg+0xca/0x110
[   47.707586]  SYSC_sendto+0x358/0x5a0
[   47.711272]  ? SYSC_connect+0x480/0x480
[   47.715226]  ? mm_fault_error+0x2c0/0x2c0
[   47.719344]  ? ipv6_setsockopt+0xa8/0x150
[   47.723468]  ? __do_page_fault+0xd60/0xd60
[   47.727683]  ? lockdep_sys_exit+0x47/0xf0
[   47.731800]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   47.736612]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   47.741601]  SyS_sendto+0x40/0x50
[   47.745026]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   47.749747] RIP: 0033:0x43fea9
[   47.752903] RSP: 002b:00007ffd6648b638 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   47.760580] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   47.767818] RDX: 0000000000000000 RSI: 0000000020b3efff RDI: 0000000000000003
[   47.775055] RBP: 0000000000000086 R08: 0000000020e0afe4 R09: 000000000000001c
[   47.782293] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   47.789533] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   47.796915] Dumping ftrace buffer:
[   47.800459]    (ftrace buffer empty)
[   47.804140] Kernel Offset: disabled
[   47.807741] Rebooting in 86400 seconds..