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-mmots-kasan-gce-2,10.128.0.29' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   45.001199] ------------[ cut here ]------------
[   45.001933] WARNING: CPU: 1 PID: 2988 at mm/slab_common.c:1001 kmalloc_slab+0x5d/0x70
[   45.003123] Kernel panic - not syncing: panic_on_warn set ...
[   45.003123] 
[   45.004120] CPU: 1 PID: 2988 Comm: syzkaller983885 Not tainted 4.14.0-rc5-mm1+ #20
[   45.005138] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.006358] Call Trace:
[   45.006715]  dump_stack+0x194/0x257
[   45.007207]  ? arch_local_irq_restore+0x53/0x53
[   45.007833]  ? vsnprintf+0x1ed/0x1900
[   45.008365]  panic+0x1e4/0x41c
[   45.008799]  ? refcount_error_report+0x214/0x214
[   45.009430]  ? show_regs_print_info+0x65/0x65
[   45.010038]  ? __warn+0x1a9/0x1e0
[   45.010507]  ? kmalloc_slab+0x5d/0x70
[   45.011017]  __warn+0x1c4/0x1e0
[   45.011461]  ? kmalloc_slab+0x5d/0x70
[   45.011975]  report_bug+0x211/0x2d0
[   45.012472]  fixup_bug+0x40/0x90
[   45.012927]  do_trap+0x260/0x390
[   45.013393]  do_error_trap+0x120/0x390
[   45.013918]  ? do_trap+0x390/0x390
[   45.014396]  ? kmalloc_slab+0x5d/0x70
[   45.014910]  ? ipv6_dev_get_saddr+0x4ec/0x9f0
[   45.015512]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   45.016161]  do_invalid_op+0x1b/0x20
[   45.016678]  invalid_op+0x18/0x20
[   45.017141] RIP: 0010:kmalloc_slab+0x5d/0x70
[   45.017725] RSP: 0018:ffff8801d1c2f4b0 EFLAGS: 00010246
[   45.018434] RAX: 0000000000000000 RBX: ffff8801d1c2f748 RCX: ffffffff843aa363
[   45.019387] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   45.020338] RBP: ffff8801d1c2f4b0 R08: ffff8801c14ba8c0 R09: ffff8801d1c2fb10
[   45.021513] R10: ffff8801d1c2f678 R11: 0000000000000000 R12: ffff8801d1c2fab0
[   45.028747] R13: ffff8801d1c2fb10 R14: 00000000014080c0 R15: ffff8801d744f880
[   45.035995]  ? ip6_setup_cork+0x173/0x15c0
[   45.040204]  __kmalloc+0x25/0x760
[   45.043625]  ? inet6_dump_ifaddr+0x30/0x30
[   45.047826]  ? ip6_setup_cork+0x1e8/0x15c0
[   45.052030]  ip6_setup_cork+0x1e8/0x15c0
[   45.056063]  ? __ip6_append_data.isra.43+0x3340/0x3340
[   45.061315]  ? ip6_pol_route_output+0x4c/0x60
[   45.065778]  ? ip6_pol_route_input+0x70/0x70
[   45.070158]  ip6_make_skb+0x282/0x530
[   45.073925]  ? ip_reply_glue_bits+0xb0/0xb0
[   45.078216]  ? ip6_push_pending_frames+0xe0/0xe0
[   45.082934]  ? ip6_dst_hoplimit+0x26c/0x420
[   45.087221]  ? lock_downgrade+0x990/0x990
[   45.091346]  ? __lock_is_held+0xb6/0x140
[   45.095388]  ? ip6_dst_hoplimit+0xc1/0x420
[   45.099587]  ? ip6_find_1stfragopt+0x240/0x240
[   45.104144]  udpv6_sendmsg+0x2769/0x3380
[   45.108173]  ? ip_reply_glue_bits+0xb0/0xb0
[   45.112471]  ? udpv6_setsockopt+0x80/0x80
[   45.116589]  ? reacquire_held_locks+0x1fd/0x3d0
[   45.121226]  ? reacquire_held_locks+0x1fd/0x3d0
[   45.125865]  ? find_held_lock+0x35/0x1d0
[   45.129903]  ? release_sock+0x1d4/0x2a0
[   45.133843]  ? lock_downgrade+0x990/0x990
[   45.137957]  ? lock_downgrade+0x990/0x990
[   45.142070]  ? do_raw_spin_trylock+0x190/0x190
[   45.146622]  ? __local_bh_enable_ip+0x9d/0x160
[   45.151174]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   45.156153]  ? release_sock+0x1d4/0x2a0
[   45.160097]  ? _raw_spin_unlock_bh+0x30/0x40
[   45.164470]  ? release_sock+0x1d4/0x2a0
[   45.168425]  ? udp_v6_get_port+0x9c/0xc0
[   45.172459]  inet_sendmsg+0x11f/0x5e0
[   45.176226]  ? inet_sendmsg+0x11f/0x5e0
[   45.180172]  ? __might_sleep+0x95/0x190
[   45.184116]  ? inet_recvmsg+0x5f0/0x5f0
[   45.188062]  ? selinux_socket_sendmsg+0x36/0x40
[   45.192698]  ? security_socket_sendmsg+0x89/0xb0
[   45.197419]  ? inet_recvmsg+0x5f0/0x5f0
[   45.201363]  sock_sendmsg+0xca/0x110
[   45.205045]  SYSC_sendto+0x352/0x5a0
[   45.208727]  ? SYSC_connect+0x470/0x470
[   45.212675]  ? mm_fault_error+0x2c0/0x2c0
[   45.216791]  ? ipv6_setsockopt+0xa8/0x150
[   45.220912]  ? __do_page_fault+0xd60/0xd60
[   45.225122]  ? SyS_recv+0x40/0x40
[   45.228543]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   45.233355]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   45.238342]  SyS_sendto+0x40/0x50
[   45.241766]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   45.246485] RIP: 0033:0x43ff99
[   45.249640] RSP: 002b:00007ffe84e59c38 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   45.257315] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043ff99
[   45.264555] RDX: 0000000000000000 RSI: 0000000020fd1000 RDI: 0000000000000003
[   45.271790] RBP: 0000000000000082 R08: 0000000020e0afe4 R09: 000000000000001c
[   45.279028] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   45.286274] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   45.293974] Dumping ftrace buffer:
[   45.297516]    (ftrace buffer empty)
[   45.301193] Kernel Offset: disabled
[   45.304787] Rebooting in 86400 seconds..