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-next-kasan-gce-2,10.128.0.52' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   44.563130] ------------[ cut here ]------------
[   44.567965] WARNING: CPU: 1 PID: 2980 at mm/slab_common.c:1001 kmalloc_slab+0x5d/0x70
[   44.576128] Kernel panic - not syncing: panic_on_warn set ...
[   44.576128] 
[   44.583462] CPU: 1 PID: 2980 Comm: syzkaller406386 Not tainted 4.14.0-rc4-next-20171009+ #33
[   44.592003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   44.601325] Call Trace:
[   44.603884]  dump_stack+0x194/0x257
[   44.607483]  ? arch_local_irq_restore+0x53/0x53
[   44.612135]  panic+0x1e4/0x41c
[   44.615300]  ? refcount_error_report+0x214/0x214
[   44.620024]  ? show_regs_print_info+0x65/0x65
[   44.624504]  ? kmalloc_slab+0x5d/0x70
[   44.628276]  __warn+0x1c4/0x1e0
[   44.631527]  ? kmalloc_slab+0x5d/0x70
[   44.635298]  report_bug+0x211/0x2d0
[   44.638901]  fixup_bug+0x40/0x90
[   44.642237]  do_trap+0x260/0x390
[   44.645580]  do_error_trap+0x120/0x390
[   44.649440]  ? do_trap+0x390/0x390
[   44.652950]  ? kmalloc_slab+0x5d/0x70
[   44.656737]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   44.661553]  do_invalid_op+0x1b/0x20
[   44.665235]  invalid_op+0x18/0x20
[   44.668657] RIP: 0010:kmalloc_slab+0x5d/0x70
[   44.673035] RSP: 0018:ffff8801cfac74b0 EFLAGS: 00010246
[   44.678369] RAX: 0000000000000000 RBX: ffff8801cfac7748 RCX: 0000000000000007
[   44.685609] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   44.692847] RBP: ffff8801cfac74b0 R08: ffff8801d5ba5700 R09: ffff8801cfac7b10
[   44.700086] R10: ffff8801d00642c0 R11: 0000000000000000 R12: ffff8801cfac7ab0
[   44.707323] R13: ffff8801cfac7b10 R14: 00000000014080c0 R15: ffff8801ce0dc7c0
[   44.714595]  __kmalloc+0x25/0x760
[   44.718038]  ? inet6_dump_ifaddr+0x30/0x30
[   44.722246]  ? ip6_setup_cork+0x1e8/0x15c0
[   44.726456]  ip6_setup_cork+0x1e8/0x15c0
[   44.730493]  ? __ip6_append_data.isra.43+0x3340/0x3340
[   44.735749]  ip6_make_skb+0x282/0x530
[   44.739523]  ? ip_reply_glue_bits+0xb0/0xb0
[   44.743823]  ? ip6_push_pending_frames+0xe0/0xe0
[   44.748552]  ? ip6_dst_hoplimit+0x10d/0x420
[   44.752848]  ? ip6_route_output_flags+0x1f1/0x2b0
[   44.757681]  ? __lock_is_held+0xbc/0x140
[   44.761734]  ? ip6_dst_hoplimit+0xc1/0x420
[   44.765952]  ? ip6_find_1stfragopt+0x240/0x240
[   44.770513]  udpv6_sendmsg+0x2769/0x3380
[   44.774551]  ? ip_reply_glue_bits+0xb0/0xb0
[   44.778859]  ? udpv6_setsockopt+0x80/0x80
[   44.782977]  ? find_held_lock+0x39/0x1d0
[   44.787018]  ? lock_downgrade+0x990/0x990
[   44.791136]  ? lock_downgrade+0x990/0x990
[   44.795254]  ? lock_release+0xd70/0xd70
[   44.799214]  ? do_raw_spin_trylock+0x190/0x190
[   44.803772]  ? __local_bh_enable_ip+0x9d/0x160
[   44.808331]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   44.813325]  ? release_sock+0x1d4/0x2a0
[   44.817275]  ? _raw_spin_unlock_bh+0x30/0x40
[   44.821652]  ? release_sock+0x1d4/0x2a0
[   44.825607]  ? udp_v6_get_port+0x9c/0xc0
[   44.829645]  inet_sendmsg+0x11f/0x5e0
[   44.833417]  ? inet_sendmsg+0x11f/0x5e0
[   44.837362]  ? __might_sleep+0x95/0x190
[   44.841307]  ? inet_recvmsg+0x5f0/0x5f0
[   44.845253]  ? selinux_socket_sendmsg+0x36/0x40
[   44.849893]  ? security_socket_sendmsg+0x89/0xb0
[   44.854619]  ? inet_recvmsg+0x5f0/0x5f0
[   44.858565]  sock_sendmsg+0xca/0x110
[   44.862251]  SYSC_sendto+0x358/0x5a0
[   44.865938]  ? SYSC_connect+0x480/0x480
[   44.869893]  ? mm_fault_error+0x2c0/0x2c0
[   44.874014]  ? ipv6_setsockopt+0xa8/0x150
[   44.878139]  ? __do_page_fault+0xd60/0xd60
[   44.882356]  ? lockdep_sys_exit+0x47/0xf0
[   44.886474]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   44.891287]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   44.896278]  SyS_sendto+0x40/0x50
[   44.899710]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   44.904433] RIP: 0033:0x43fea9
[   44.907590] RSP: 002b:00007ffff2482e28 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   44.915270] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   44.922510] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   44.929749] RBP: 0000000000000082 R08: 0000000020e0afe4 R09: 000000000000001c
[   44.936986] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   44.944226] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   44.951658] Dumping ftrace buffer:
[   44.955220]    (ftrace buffer empty)
[   44.958902] Kernel Offset: disabled
[   44.962509] Rebooting in 86400 seconds..