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-kasan-gce-5,10.128.0.43' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   85.354023] ------------[ cut here ]------------
[   85.354755] WARNING: CPU: 1 PID: 2981 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   85.355985] Kernel panic - not syncing: panic_on_warn set ...
[   85.355985] 
[   85.356959] CPU: 1 PID: 2981 Comm: syzkaller975308 Not tainted 4.14.0-rc4+ #131
[   85.357938] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   85.359202] Call Trace:
[   85.359565]  dump_stack+0x194/0x257
[   85.360061]  ? arch_local_irq_restore+0x53/0x53
[   85.360712]  panic+0x1e4/0x417
[   85.361148]  ? __warn+0x1d9/0x1d9
[   85.361616]  ? show_regs_print_info+0x65/0x65
[   85.362225]  ? retint_kernel+0x10/0x10
[   85.362756]  ? kmalloc_slab+0x5d/0x70
[   85.363270]  __warn+0x1c4/0x1d9
[   85.363732]  ? kmalloc_slab+0x5f/0x70
[   85.364244]  ? kmalloc_slab+0x5d/0x70
[   85.364761]  report_bug+0x211/0x2d0
[   85.365262]  fixup_bug+0x40/0x90
[   85.365722]  do_trap+0x260/0x390
[   85.366191]  do_error_trap+0x120/0x390
[   85.366719]  ? do_trap+0x390/0x390
[   85.367200]  ? kmalloc_slab+0x5d/0x70
[   85.367715]  ? lock_release+0xd70/0xd70
[   85.368260]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   85.368912]  do_invalid_op+0x1b/0x20
[   85.369415]  invalid_op+0x18/0x20
[   85.369886] RIP: 0010:kmalloc_slab+0x5d/0x70
[   85.370475] RSP: 0018:ffff8801ce0b74b0 EFLAGS: 00010246
[   85.371195] RAX: 0000000000000000 RBX: ffff8801ce0b7748 RCX: 0000000000000007
[   85.372150] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   85.373105] RBP: ffff8801ce0b74b0 R08: ffff8801cf177380 R09: ffff8801ce0b7b10
[   85.374090] R10: ffff8801ce82e0c0 R11: 0000000000000000 R12: ffff8801ce0b7ab0
[   85.375046] R13: ffff8801ce0b7b10 R14: 00000000014080c0 R15: ffff8801ce5f97c0
[   85.382309]  __kmalloc+0x25/0x760
[   85.385739]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   85.390381]  ? ip6_setup_cork+0x1e8/0x15c0
[   85.394591]  ip6_setup_cork+0x1e8/0x15c0
[   85.398633]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   85.403892]  ip6_make_skb+0x282/0x530
[   85.407669]  ? ip_reply_glue_bits+0xb0/0xb0
[   85.411966]  ? ip6_push_pending_frames+0xe0/0xe0
[   85.416693]  ? ip6_dst_hoplimit+0x10d/0x420
[   85.420987]  ? ip6_route_output_flags+0x1f1/0x2b0
[   85.425815]  ? __lock_is_held+0xbc/0x140
[   85.429860]  ? ip6_dst_hoplimit+0xc1/0x420
[   85.434068]  ? ip6_find_1stfragopt+0x240/0x240
[   85.438629]  udpv6_sendmsg+0x2769/0x3380
[   85.442663]  ? ip_reply_glue_bits+0xb0/0xb0
[   85.446970]  ? udpv6_setsockopt+0x80/0x80
[   85.451089]  ? find_held_lock+0x39/0x1d0
[   85.455131]  ? lock_downgrade+0x990/0x990
[   85.459250]  ? lock_downgrade+0x990/0x990
[   85.463370]  ? lock_release+0xd70/0xd70
[   85.467326]  ? do_raw_spin_trylock+0x190/0x190
[   85.471889]  ? __local_bh_enable_ip+0x9d/0x160
[   85.476442]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   85.481429]  ? release_sock+0x1d4/0x2a0
[   85.485377]  ? _raw_spin_unlock_bh+0x30/0x40
[   85.489755]  ? release_sock+0x1d4/0x2a0
[   85.493707]  ? udp_v6_get_port+0x9c/0xc0
[   85.497747]  inet_sendmsg+0x11f/0x5e0
[   85.501513]  ? inet_sendmsg+0x11f/0x5e0
[   85.505457]  ? __might_sleep+0x95/0x190
[   85.509402]  ? inet_recvmsg+0x5f0/0x5f0
[   85.513349]  ? selinux_socket_sendmsg+0x36/0x40
[   85.517985]  ? security_socket_sendmsg+0x89/0xb0
[   85.522710]  ? inet_recvmsg+0x5f0/0x5f0
[   85.526655]  sock_sendmsg+0xca/0x110
[   85.530340]  SYSC_sendto+0x358/0x5a0
[   85.534030]  ? SYSC_connect+0x480/0x480
[   85.537988]  ? mm_fault_error+0x2c0/0x2c0
[   85.542111]  ? ipv6_setsockopt+0xa8/0x150
[   85.546238]  ? __do_page_fault+0xd60/0xd60
[   85.550456]  ? lockdep_sys_exit+0x47/0xf0
[   85.554576]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   85.559391]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   85.564383]  SyS_sendto+0x40/0x50
[   85.567815]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   85.572543] RIP: 0033:0x43fea9
[   85.575702] RSP: 002b:00007ffc6c226eb8 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   85.583382] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   85.590620] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   85.597858] RBP: 0000000000000086 R08: 0000000020e0afe4 R09: 000000000000001c
[   85.605101] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   85.612341] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   85.620032] Dumping ftrace buffer:
[   85.623578]    (ftrace buffer empty)
[   85.627259] Kernel Offset: disabled
[   85.630860] Rebooting in 86400 seconds..