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-8,10.128.0.43' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   31.543842] ------------[ cut here ]------------
[   31.544620] WARNING: CPU: 0 PID: 2977 at mm/slab_common.c:1001 kmalloc_slab+0x5d/0x70
[   31.545868] Kernel panic - not syncing: panic_on_warn set ...
[   31.545868] 
[   31.546868] CPU: 0 PID: 2977 Comm: syzkaller081444 Not tainted 4.14.0-rc4-mm1+ #16
[   31.547882] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   31.549128] Call Trace:
[   31.549503]  dump_stack+0x194/0x257
[   31.550002]  ? arch_local_irq_restore+0x53/0x53
[   31.550642]  panic+0x1e4/0x41c
[   31.551114]  ? refcount_error_report+0x214/0x214
[   31.551769]  ? show_regs_print_info+0x65/0x65
[   31.552392]  ? kmalloc_slab+0x5d/0x70
[   31.552909]  __warn+0x1c4/0x1e0
[   31.553358]  ? kmalloc_slab+0x5d/0x70
[   31.553875]  report_bug+0x211/0x2d0
[   31.554377]  fixup_bug+0x40/0x90
[   31.554848]  do_trap+0x260/0x390
[   31.555313]  do_error_trap+0x120/0x390
[   31.555858]  ? do_trap+0x390/0x390
[   31.556357]  ? kmalloc_slab+0x5d/0x70
[   31.556884]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   31.557573]  do_invalid_op+0x1b/0x20
[   31.558076]  invalid_op+0x18/0x20
[   31.558567] RIP: 0010:kmalloc_slab+0x5d/0x70
[   31.559185] RSP: 0018:ffff8801ce58f4b0 EFLAGS: 00010246
[   31.559960] RAX: 0000000000000000 RBX: ffff8801ce58f748 RCX: 0000000000000007
[   31.560950] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   31.561949] RBP: ffff8801ce58f4b0 R08: ffff8801d0a1d1c0 R09: ffff8801ce58fb10
[   31.562924] R10: ffff8801cfbd0280 R11: 0000000000000000 R12: ffff8801ce58fab0
[   31.563881] R13: ffff8801ce58fb10 R14: 00000000014080c0 R15: ffff8801ce5567c0
[   31.567611]  __kmalloc+0x25/0x760
[   31.571045]  ? inet6_dump_ifaddr+0x30/0x30
[   31.575816]  ? ip6_setup_cork+0x1e8/0x15c0
[   31.580026]  ip6_setup_cork+0x1e8/0x15c0
[   31.584064]  ? __ip6_append_data.isra.43+0x3340/0x3340
[   31.589322]  ip6_make_skb+0x282/0x530
[   31.593097]  ? ip_reply_glue_bits+0xb0/0xb0
[   31.597392]  ? ip6_push_pending_frames+0xe0/0xe0
[   31.602115]  ? ip6_dst_hoplimit+0x10d/0x420
[   31.606406]  ? ip6_route_output_flags+0x1f1/0x2b0
[   31.611230]  ? __lock_is_held+0xbc/0x140
[   31.615273]  ? ip6_dst_hoplimit+0xc1/0x420
[   31.619481]  ? ip6_find_1stfragopt+0x240/0x240
[   31.624043]  udpv6_sendmsg+0x2769/0x3380
[   31.628078]  ? ip_reply_glue_bits+0xb0/0xb0
[   31.632387]  ? udpv6_setsockopt+0x80/0x80
[   31.636504]  ? find_held_lock+0x39/0x1d0
[   31.640550]  ? lock_downgrade+0x990/0x990
[   31.644667]  ? lock_downgrade+0x990/0x990
[   31.648783]  ? lock_release+0xd70/0xd70
[   31.652740]  ? do_raw_spin_trylock+0x190/0x190
[   31.657297]  ? __local_bh_enable_ip+0x9d/0x160
[   31.661853]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   31.666837]  ? release_sock+0x1d4/0x2a0
[   31.670786]  ? _raw_spin_unlock_bh+0x30/0x40
[   31.675167]  ? release_sock+0x1d4/0x2a0
[   31.679121]  ? udp_v6_get_port+0x9c/0xc0
[   31.683159]  inet_sendmsg+0x11f/0x5e0
[   31.686932]  ? inet_sendmsg+0x11f/0x5e0
[   31.690879]  ? __might_sleep+0x95/0x190
[   31.694823]  ? inet_recvmsg+0x5f0/0x5f0
[   31.698770]  ? selinux_socket_sendmsg+0x36/0x40
[   31.703407]  ? security_socket_sendmsg+0x89/0xb0
[   31.708135]  ? inet_recvmsg+0x5f0/0x5f0
[   31.712079]  sock_sendmsg+0xca/0x110
[   31.715765]  SYSC_sendto+0x358/0x5a0
[   31.719453]  ? SYSC_connect+0x480/0x480
[   31.723406]  ? mm_fault_error+0x2c0/0x2c0
[   31.727529]  ? ipv6_setsockopt+0xa8/0x150
[   31.731656]  ? __do_page_fault+0xd60/0xd60
[   31.735873]  ? lockdep_sys_exit+0x47/0xf0
[   31.739992]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   31.744804]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   31.749808]  SyS_sendto+0x40/0x50
[   31.753236]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   31.757962] RIP: 0033:0x43fea9
[   31.761119] RSP: 002b:00007ffdd62cdfe8 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   31.768797] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   31.776035] RDX: 0000000000000000 RSI: 0000000020fd1000 RDI: 0000000000000003
[   31.783274] RBP: 0000000000000082 R08: 0000000020e0afe4 R09: 000000000000001c
[   31.790517] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   31.797758] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   31.805147] Dumping ftrace buffer:
[   31.808694]    (ftrace buffer empty)
[   31.812377] Kernel Offset: disabled
[   31.815983] Rebooting in 86400 seconds..