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-9,10.128.0.19' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   32.936286] ------------[ cut here ]------------
[   32.941086] WARNING: CPU: 1 PID: 2980 at mm/slab_common.c:1001 kmalloc_slab+0x5d/0x70
[   32.949332] Kernel panic - not syncing: panic_on_warn set ...
[   32.949332] 
[   32.956673] CPU: 1 PID: 2980 Comm: syzkaller195323 Not tainted 4.14.0-rc4-next-20171009+ #33
[   32.965219] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.974543] Call Trace:
[   32.977103]  dump_stack+0x194/0x257
[   32.980706]  ? arch_local_irq_restore+0x53/0x53
[   32.985359]  panic+0x1e4/0x41c
[   32.988523]  ? refcount_error_report+0x214/0x214
[   32.993249]  ? show_regs_print_info+0x65/0x65
[   32.997728]  ? kmalloc_slab+0x5d/0x70
[   33.001501]  __warn+0x1c4/0x1e0
[   33.004752]  ? kmalloc_slab+0x5d/0x70
[   33.008526]  report_bug+0x211/0x2d0
[   33.012130]  fixup_bug+0x40/0x90
[   33.015468]  do_trap+0x260/0x390
[   33.018811]  do_error_trap+0x120/0x390
[   33.022671]  ? do_trap+0x390/0x390
[   33.026180]  ? kmalloc_slab+0x5d/0x70
[   33.029961]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.034787]  do_invalid_op+0x1b/0x20
[   33.038471]  invalid_op+0x18/0x20
[   33.041893] RIP: 0010:kmalloc_slab+0x5d/0x70
[   33.046268] RSP: 0018:ffff8801ceb974b0 EFLAGS: 00010246
[   33.051603] RAX: 0000000000000000 RBX: ffff8801ceb97748 RCX: 0000000000000007
[   33.058860] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   33.066103] RBP: ffff8801ceb974b0 R08: ffff8801d16e6c40 R09: ffff8801ceb97b10
[   33.073344] R10: ffff8801d05d2000 R11: 0000000000000000 R12: ffff8801ceb97ab0
[   33.080586] R13: ffff8801ceb97b10 R14: 00000000014080c0 R15: ffff8801ce54c7c0
[   33.087848]  __kmalloc+0x25/0x760
[   33.091280]  ? inet6_dump_ifaddr+0x30/0x30
[   33.095487]  ? ip6_setup_cork+0x1e8/0x15c0
[   33.099698]  ip6_setup_cork+0x1e8/0x15c0
[   33.103740]  ? __ip6_append_data.isra.43+0x3340/0x3340
[   33.109002]  ip6_make_skb+0x282/0x530
[   33.112776]  ? ip_reply_glue_bits+0xb0/0xb0
[   33.117073]  ? ip6_push_pending_frames+0xe0/0xe0
[   33.121801]  ? ip6_dst_hoplimit+0x10d/0x420
[   33.126096]  ? ip6_route_output_flags+0x1f1/0x2b0
[   33.130923]  ? __lock_is_held+0xbc/0x140
[   33.134970]  ? ip6_dst_hoplimit+0xc1/0x420
[   33.139180]  ? ip6_find_1stfragopt+0x240/0x240
[   33.143754]  udpv6_sendmsg+0x2769/0x3380
[   33.147794]  ? ip_reply_glue_bits+0xb0/0xb0
[   33.152103]  ? udpv6_setsockopt+0x80/0x80
[   33.156222]  ? find_held_lock+0x39/0x1d0
[   33.160267]  ? lock_downgrade+0x990/0x990
[   33.164389]  ? lock_downgrade+0x990/0x990
[   33.168515]  ? lock_release+0xd70/0xd70
[   33.172474]  ? do_raw_spin_trylock+0x190/0x190
[   33.177036]  ? __local_bh_enable_ip+0x9d/0x160
[   33.181591]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   33.186580]  ? release_sock+0x1d4/0x2a0
[   33.190533]  ? _raw_spin_unlock_bh+0x30/0x40
[   33.194912]  ? release_sock+0x1d4/0x2a0
[   33.198868]  ? udp_v6_get_port+0x9c/0xc0
[   33.202924]  inet_sendmsg+0x11f/0x5e0
[   33.206699]  ? inet_sendmsg+0x11f/0x5e0
[   33.210649]  ? __might_sleep+0x95/0x190
[   33.214597]  ? inet_recvmsg+0x5f0/0x5f0
[   33.218546]  ? selinux_socket_sendmsg+0x36/0x40
[   33.223194]  ? security_socket_sendmsg+0x89/0xb0
[   33.227924]  ? inet_recvmsg+0x5f0/0x5f0
[   33.231877]  sock_sendmsg+0xca/0x110
[   33.235566]  SYSC_sendto+0x358/0x5a0
[   33.239255]  ? SYSC_connect+0x480/0x480
[   33.243217]  ? mm_fault_error+0x2c0/0x2c0
[   33.247344]  ? ipv6_setsockopt+0xa8/0x150
[   33.251482]  ? __do_page_fault+0xd60/0xd60
[   33.255718]  ? lockdep_sys_exit+0x47/0xf0
[   33.259841]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   33.264658]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   33.269649]  SyS_sendto+0x40/0x50
[   33.273078]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   33.277805] RIP: 0033:0x43fea9
[   33.280966] RSP: 002b:00007ffe4ab28b48 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   33.288647] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   33.295887] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   33.303147] RBP: 0000000000000082 R08: 0000000020e0afe4 R09: 000000000000001c
[   33.310390] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   33.317641] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   33.325036] Dumping ftrace buffer:
[   33.328601]    (ftrace buffer empty)
[   33.332284] Kernel Offset: disabled
[   33.335890] Rebooting in 86400 seconds..