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-0,10.128.0.52' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   40.627434] ------------[ cut here ]------------
[   40.632242] WARNING: CPU: 1 PID: 2983 at mm/slab_common.c:1001 kmalloc_slab+0x5d/0x70
[   40.640386] Kernel panic - not syncing: panic_on_warn set ...
[   40.640386] 
[   40.647724] CPU: 1 PID: 2983 Comm: syzkaller222165 Not tainted 4.14.0-rc4-next-20171009+ #33
[   40.656267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   40.665606] Call Trace:
[   40.668168]  dump_stack+0x194/0x257
[   40.671769]  ? arch_local_irq_restore+0x53/0x53
[   40.676425]  panic+0x1e4/0x41c
[   40.679589]  ? refcount_error_report+0x214/0x214
[   40.684313]  ? show_regs_print_info+0x65/0x65
[   40.688793]  ? kmalloc_slab+0x5d/0x70
[   40.692563]  __warn+0x1c4/0x1e0
[   40.695814]  ? kmalloc_slab+0x5d/0x70
[   40.699589]  report_bug+0x211/0x2d0
[   40.703196]  fixup_bug+0x40/0x90
[   40.706533]  do_trap+0x260/0x390
[   40.709877]  do_error_trap+0x120/0x390
[   40.713747]  ? do_trap+0x390/0x390
[   40.717265]  ? kmalloc_slab+0x5d/0x70
[   40.721047]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   40.725871]  do_invalid_op+0x1b/0x20
[   40.729557]  invalid_op+0x18/0x20
[   40.732979] RIP: 0010:kmalloc_slab+0x5d/0x70
[   40.737355] RSP: 0018:ffff8801ce1df4b0 EFLAGS: 00010246
[   40.742692] RAX: 0000000000000000 RBX: ffff8801ce1df748 RCX: 0000000000000007
[   40.749934] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   40.757608] RBP: ffff8801ce1df4b0 R08: ffff8801d3b981c0 R09: ffff8801ce1dfb10
[   40.764847] R10: ffff8801cf4362c0 R11: 0000000000000000 R12: ffff8801ce1dfab0
[   40.772089] R13: ffff8801ce1dfb10 R14: 00000000014080c0 R15: ffff8801d356e7c0
[   40.779355]  __kmalloc+0x25/0x760
[   40.782786]  ? inet6_dump_ifaddr+0x30/0x30
[   40.786991]  ? ip6_setup_cork+0x1e8/0x15c0
[   40.791201]  ip6_setup_cork+0x1e8/0x15c0
[   40.795244]  ? __ip6_append_data.isra.43+0x3340/0x3340
[   40.800505]  ip6_make_skb+0x282/0x530
[   40.804286]  ? ip_reply_glue_bits+0xb0/0xb0
[   40.808580]  ? ip6_push_pending_frames+0xe0/0xe0
[   40.813306]  ? ip6_dst_hoplimit+0x10d/0x420
[   40.817600]  ? ip6_route_output_flags+0x1f1/0x2b0
[   40.822423]  ? __lock_is_held+0xbc/0x140
[   40.826468]  ? ip6_dst_hoplimit+0xc1/0x420
[   40.830672]  ? ip6_find_1stfragopt+0x240/0x240
[   40.835238]  udpv6_sendmsg+0x2769/0x3380
[   40.839274]  ? ip_reply_glue_bits+0xb0/0xb0
[   40.843582]  ? udpv6_setsockopt+0x80/0x80
[   40.847703]  ? find_held_lock+0x39/0x1d0
[   40.851746]  ? lock_downgrade+0x990/0x990
[   40.855868]  ? lock_downgrade+0x990/0x990
[   40.859988]  ? lock_release+0xd70/0xd70
[   40.863947]  ? do_raw_spin_trylock+0x190/0x190
[   40.868511]  ? __local_bh_enable_ip+0x9d/0x160
[   40.873077]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   40.878066]  ? release_sock+0x1d4/0x2a0
[   40.882017]  ? _raw_spin_unlock_bh+0x30/0x40
[   40.886397]  ? release_sock+0x1d4/0x2a0
[   40.890357]  ? udp_v6_get_port+0x9c/0xc0
[   40.894401]  inet_sendmsg+0x11f/0x5e0
[   40.898170]  ? inet_sendmsg+0x11f/0x5e0
[   40.902119]  ? __might_sleep+0x95/0x190
[   40.906066]  ? inet_recvmsg+0x5f0/0x5f0
[   40.910014]  ? selinux_socket_sendmsg+0x36/0x40
[   40.914657]  ? security_socket_sendmsg+0x89/0xb0
[   40.919383]  ? inet_recvmsg+0x5f0/0x5f0
[   40.923333]  sock_sendmsg+0xca/0x110
[   40.927022]  SYSC_sendto+0x358/0x5a0
[   40.930710]  ? SYSC_connect+0x480/0x480
[   40.934665]  ? mm_fault_error+0x2c0/0x2c0
[   40.938790]  ? ipv6_setsockopt+0xa8/0x150
[   40.942921]  ? __do_page_fault+0xd60/0xd60
[   40.947142]  ? lockdep_sys_exit+0x47/0xf0
[   40.951263]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   40.956077]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   40.961065]  SyS_sendto+0x40/0x50
[   40.964492]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   40.969217] RIP: 0033:0x43fea9
[   40.972379] RSP: 002b:00007ffedc127588 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   40.980060] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   40.987301] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   40.994542] RBP: 0000000000000082 R08: 0000000020e0afe4 R09: 000000000000001c
[   41.001781] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   41.009020] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   41.016423] Dumping ftrace buffer:
[   41.019975]    (ftrace buffer empty)
[   41.023658] Kernel Offset: disabled
[   41.027263] Rebooting in 86400 seconds..