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-3,10.128.0.53' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   83.587165] ------------[ cut here ]------------
[   83.587964] WARNING: CPU: 0 PID: 2983 at mm/slab_common.c:1001 kmalloc_slab+0x5d/0x70
[   83.589209] Kernel panic - not syncing: panic_on_warn set ...
[   83.589209] 
[   83.590184] CPU: 0 PID: 2983 Comm: syzkaller492160 Not tainted 4.14.0-rc4-mm1+ #16
[   83.591198] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   83.592441] Call Trace:
[   83.592809]  dump_stack+0x194/0x257
[   83.593308]  ? arch_local_irq_restore+0x53/0x53
[   83.593970]  panic+0x1e4/0x41c
[   83.594410]  ? refcount_error_report+0x214/0x214
[   83.595050]  ? show_regs_print_info+0x65/0x65
[   83.595671]  ? kmalloc_slab+0x5d/0x70
[   83.596205]  __warn+0x1c4/0x1e0
[   83.596656]  ? kmalloc_slab+0x5d/0x70
[   83.597176]  report_bug+0x211/0x2d0
[   83.597678]  fixup_bug+0x40/0x90
[   83.598139]  do_trap+0x260/0x390
[   83.598609]  do_error_trap+0x120/0x390
[   83.599142]  ? do_trap+0x390/0x390
[   83.599626]  ? kmalloc_slab+0x5d/0x70
[   83.600152]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   83.600809]  do_invalid_op+0x1b/0x20
[   83.601316]  invalid_op+0x18/0x20
[   83.601787] RIP: 0010:kmalloc_slab+0x5d/0x70
[   83.602378] RSP: 0018:ffff8801d16a74b0 EFLAGS: 00010246
[   83.603097] RAX: 0000000000000000 RBX: ffff8801d16a7748 RCX: 0000000000000007
[   83.604057] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   83.605056] RBP: ffff8801d16a74b0 R08: ffff8801ce7cd380 R09: ffff8801d16a7b10
[   83.606014] R10: ffff8801cf1ea5c0 R11: 0000000000000000 R12: ffff8801d16a7ab0
[   83.606988] R13: ffff8801d16a7b10 R14: 00000000014080c0 R15: ffff8801ce5fa7c0
[   83.607969]  __kmalloc+0x25/0x760
[   83.611402]  ? inet6_dump_ifaddr+0x30/0x30
[   83.615607]  ? ip6_setup_cork+0x1e8/0x15c0
[   83.619818]  ip6_setup_cork+0x1e8/0x15c0
[   83.623859]  ? __ip6_append_data.isra.43+0x3340/0x3340
[   83.629117]  ip6_make_skb+0x282/0x530
[   83.632890]  ? ip_reply_glue_bits+0xb0/0xb0
[   83.637183]  ? ip6_push_pending_frames+0xe0/0xe0
[   83.641910]  ? ip6_dst_hoplimit+0x10d/0x420
[   83.646202]  ? ip6_route_output_flags+0x1f1/0x2b0
[   83.651027]  ? __lock_is_held+0xbc/0x140
[   83.655073]  ? ip6_dst_hoplimit+0xc1/0x420
[   83.659279]  ? ip6_find_1stfragopt+0x240/0x240
[   83.663842]  udpv6_sendmsg+0x2769/0x3380
[   83.667877]  ? ip_reply_glue_bits+0xb0/0xb0
[   83.672182]  ? udpv6_setsockopt+0x80/0x80
[   83.676301]  ? find_held_lock+0x39/0x1d0
[   83.680346]  ? lock_downgrade+0x990/0x990
[   83.684468]  ? lock_downgrade+0x990/0x990
[   83.688588]  ? lock_release+0xd70/0xd70
[   83.692547]  ? do_raw_spin_trylock+0x190/0x190
[   83.697105]  ? __local_bh_enable_ip+0x9d/0x160
[   83.701659]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   83.706646]  ? release_sock+0x1d4/0x2a0
[   83.710601]  ? _raw_spin_unlock_bh+0x30/0x40
[   83.714980]  ? release_sock+0x1d4/0x2a0
[   83.718937]  ? udp_v6_get_port+0x9c/0xc0
[   83.722983]  inet_sendmsg+0x11f/0x5e0
[   83.726756]  ? inet_sendmsg+0x11f/0x5e0
[   83.730703]  ? __might_sleep+0x95/0x190
[   83.734648]  ? inet_recvmsg+0x5f0/0x5f0
[   83.738595]  ? selinux_socket_sendmsg+0x36/0x40
[   83.743235]  ? security_socket_sendmsg+0x89/0xb0
[   83.747964]  ? inet_recvmsg+0x5f0/0x5f0
[   83.751914]  sock_sendmsg+0xca/0x110
[   83.755600]  SYSC_sendto+0x358/0x5a0
[   83.759290]  ? SYSC_connect+0x480/0x480
[   83.763246]  ? mm_fault_error+0x2c0/0x2c0
[   83.767373]  ? ipv6_setsockopt+0xa8/0x150
[   83.771501]  ? __do_page_fault+0xd60/0xd60
[   83.775719]  ? lockdep_sys_exit+0x47/0xf0
[   83.779838]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   83.784655]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   83.789644]  SyS_sendto+0x40/0x50
[   83.793070]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   83.797791] RIP: 0033:0x43fea9
[   83.800951] RSP: 002b:00007ffe8bbc4f88 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   83.808632] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   83.815872] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   83.823113] RBP: 0000000000000082 R08: 0000000020e0afe4 R09: 000000000000001c
[   83.830352] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   83.837603] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   83.845045] Dumping ftrace buffer:
[   83.848617]    (ftrace buffer empty)
[   83.852301] Kernel Offset: disabled
[   83.855914] Rebooting in 86400 seconds..