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-9,10.128.0.56' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   41.175131] ------------[ cut here ]------------
[   41.179965] WARNING: CPU: 0 PID: 2982 at mm/slab_common.c:1001 kmalloc_slab+0x5d/0x70
[   41.188088] Kernel panic - not syncing: panic_on_warn set ...
[   41.188088] 
[   41.195429] CPU: 0 PID: 2982 Comm: syzkaller653312 Not tainted 4.14.0-rc4-mm1+ #16
[   41.203108] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   41.212463] Call Trace:
[   41.215032]  dump_stack+0x194/0x257
[   41.218635]  ? arch_local_irq_restore+0x53/0x53
[   41.223291]  panic+0x1e4/0x41c
[   41.226456]  ? refcount_error_report+0x214/0x214
[   41.231183]  ? show_regs_print_info+0x65/0x65
[   41.235666]  ? kmalloc_slab+0x5d/0x70
[   41.239438]  __warn+0x1c4/0x1e0
[   41.242690]  ? kmalloc_slab+0x5d/0x70
[   41.246463]  report_bug+0x211/0x2d0
[   41.250068]  fixup_bug+0x40/0x90
[   41.253404]  do_trap+0x260/0x390
[   41.256752]  do_error_trap+0x120/0x390
[   41.260627]  ? do_trap+0x390/0x390
[   41.264141]  ? kmalloc_slab+0x5d/0x70
[   41.267928]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   41.272748]  do_invalid_op+0x1b/0x20
[   41.276457]  invalid_op+0x18/0x20
[   41.279881] RIP: 0010:kmalloc_slab+0x5d/0x70
[   41.284258] RSP: 0018:ffff8801ce9074b0 EFLAGS: 00010246
[   41.289595] RAX: 0000000000000000 RBX: ffff8801ce907748 RCX: 0000000000000007
[   41.296836] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   41.304079] RBP: ffff8801ce9074b0 R08: ffff8801ccd638c0 R09: ffff8801ce907b10
[   41.311320] R10: ffff8801ceb281c0 R11: 0000000000000000 R12: ffff8801ce907ab0
[   41.318563] R13: ffff8801ce907b10 R14: 00000000014080c0 R15: ffff8801ce5567c0
[   41.325828]  __kmalloc+0x25/0x760
[   41.329260]  ? inet6_dump_ifaddr+0x30/0x30
[   41.333465]  ? ip6_setup_cork+0x1e8/0x15c0
[   41.337677]  ip6_setup_cork+0x1e8/0x15c0
[   41.341721]  ? __ip6_append_data.isra.43+0x3340/0x3340
[   41.346994]  ip6_make_skb+0x282/0x530
[   41.350771]  ? ip_reply_glue_bits+0xb0/0xb0
[   41.355069]  ? ip6_push_pending_frames+0xe0/0xe0
[   41.359793]  ? ip6_dst_hoplimit+0x10d/0x420
[   41.364085]  ? ip6_route_output_flags+0x1f1/0x2b0
[   41.368911]  ? __lock_is_held+0xbc/0x140
[   41.372955]  ? ip6_dst_hoplimit+0xc1/0x420
[   41.377158]  ? ip6_find_1stfragopt+0x240/0x240
[   41.381718]  udpv6_sendmsg+0x2769/0x3380
[   41.385756]  ? ip_reply_glue_bits+0xb0/0xb0
[   41.390075]  ? udpv6_setsockopt+0x80/0x80
[   41.394191]  ? find_held_lock+0x39/0x1d0
[   41.398236]  ? lock_downgrade+0x990/0x990
[   41.402355]  ? lock_downgrade+0x990/0x990
[   41.406477]  ? lock_release+0xd70/0xd70
[   41.410436]  ? do_raw_spin_trylock+0x190/0x190
[   41.414996]  ? __local_bh_enable_ip+0x9d/0x160
[   41.419553]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   41.424539]  ? release_sock+0x1d4/0x2a0
[   41.428490]  ? _raw_spin_unlock_bh+0x30/0x40
[   41.432867]  ? release_sock+0x1d4/0x2a0
[   41.436819]  ? udp_v6_get_port+0x9c/0xc0
[   41.440857]  inet_sendmsg+0x11f/0x5e0
[   41.444625]  ? inet_sendmsg+0x11f/0x5e0
[   41.448570]  ? __might_sleep+0x95/0x190
[   41.452515]  ? inet_recvmsg+0x5f0/0x5f0
[   41.456464]  ? selinux_socket_sendmsg+0x36/0x40
[   41.461106]  ? security_socket_sendmsg+0x89/0xb0
[   41.465843]  ? inet_recvmsg+0x5f0/0x5f0
[   41.469793]  sock_sendmsg+0xca/0x110
[   41.473492]  SYSC_sendto+0x358/0x5a0
[   41.477179]  ? SYSC_connect+0x480/0x480
[   41.481135]  ? mm_fault_error+0x2c0/0x2c0
[   41.485260]  ? ipv6_setsockopt+0xa8/0x150
[   41.489396]  ? __do_page_fault+0xd60/0xd60
[   41.493612]  ? lockdep_sys_exit+0x47/0xf0
[   41.497733]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   41.502549]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   41.507541]  SyS_sendto+0x40/0x50
[   41.510969]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   41.515692] RIP: 0033:0x43fea9
[   41.518854] RSP: 002b:00007fffdfeae3d8 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   41.526540] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   41.533785] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   41.541026] RBP: 0000000000000082 R08: 0000000020e0afe4 R09: 000000000000001c
[   41.548269] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   41.555523] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   41.562920] Dumping ftrace buffer:
[   41.566481]    (ftrace buffer empty)
[   41.570161] Kernel Offset: disabled
[   41.573769] Rebooting in 86400 seconds..