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-kasan-gce-3,10.128.15.216' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   52.526075] ------------[ cut here ]------------
[   52.530875] WARNING: CPU: 1 PID: 2984 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   52.538860] Kernel panic - not syncing: panic_on_warn set ...
[   52.538860] 
[   52.546194] CPU: 1 PID: 2984 Comm: syzkaller625578 Not tainted 4.14.0-rc4+ #131
[   52.553610] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   52.562934] Call Trace:
[   52.565495]  dump_stack+0x194/0x257
[   52.569097]  ? arch_local_irq_restore+0x53/0x53
[   52.573750]  panic+0x1e4/0x417
[   52.576914]  ? __warn+0x1d9/0x1d9
[   52.580335]  ? show_regs_print_info+0x65/0x65
[   52.584818]  ? kmalloc_slab+0x5d/0x70
[   52.588587]  __warn+0x1c4/0x1d9
[   52.591837]  ? kmalloc_slab+0x5d/0x70
[   52.595609]  report_bug+0x211/0x2d0
[   52.599213]  fixup_bug+0x40/0x90
[   52.602553]  do_trap+0x260/0x390
[   52.605898]  do_error_trap+0x120/0x390
[   52.609759]  ? do_trap+0x390/0x390
[   52.613273]  ? kmalloc_slab+0x5d/0x70
[   52.617047]  ? lock_release+0xd70/0xd70
[   52.621000]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   52.625819]  do_invalid_op+0x1b/0x20
[   52.629504]  invalid_op+0x18/0x20
[   52.632927] RIP: 0010:kmalloc_slab+0x5d/0x70
[   52.637304] RSP: 0018:ffff8801cf0774b0 EFLAGS: 00010246
[   52.642640] RAX: 0000000000000000 RBX: ffff8801cf077748 RCX: 0000000000000007
[   52.649879] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   52.657120] RBP: ffff8801cf0774b0 R08: ffff8801cdba2380 R09: ffff8801cf077b10
[   52.664362] R10: ffff8801ce048480 R11: 0000000000000000 R12: ffff8801cf077ab0
[   52.671603] R13: ffff8801cf077b10 R14: 00000000014080c0 R15: ffff8801ce46c7c0
[   52.678868]  __kmalloc+0x25/0x760
[   52.682299]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   52.686937]  ? ip6_setup_cork+0x1e8/0x15c0
[   52.691160]  ip6_setup_cork+0x1e8/0x15c0
[   52.695200]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   52.700460]  ip6_make_skb+0x282/0x530
[   52.704248]  ? ip_reply_glue_bits+0xb0/0xb0
[   52.708544]  ? ip6_push_pending_frames+0xe0/0xe0
[   52.713272]  ? ip6_dst_hoplimit+0x10d/0x420
[   52.717566]  ? ip6_route_output_flags+0x1f1/0x2b0
[   52.722390]  ? __lock_is_held+0xbc/0x140
[   52.726435]  ? ip6_dst_hoplimit+0xc1/0x420
[   52.730641]  ? ip6_find_1stfragopt+0x240/0x240
[   52.735204]  udpv6_sendmsg+0x2769/0x3380
[   52.739241]  ? ip_reply_glue_bits+0xb0/0xb0
[   52.743547]  ? udpv6_setsockopt+0x80/0x80
[   52.747665]  ? find_held_lock+0x39/0x1d0
[   52.751707]  ? lock_downgrade+0x990/0x990
[   52.755825]  ? lock_downgrade+0x990/0x990
[   52.759945]  ? lock_release+0xd70/0xd70
[   52.763903]  ? do_raw_spin_trylock+0x190/0x190
[   52.768463]  ? __local_bh_enable_ip+0x9d/0x160
[   52.773017]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   52.778005]  ? release_sock+0x1d4/0x2a0
[   52.781956]  ? _raw_spin_unlock_bh+0x30/0x40
[   52.786337]  ? release_sock+0x1d4/0x2a0
[   52.790294]  ? udp_v6_get_port+0x9c/0xc0
[   52.794334]  inet_sendmsg+0x11f/0x5e0
[   52.798105]  ? inet_sendmsg+0x11f/0x5e0
[   52.802051]  ? __might_sleep+0x95/0x190
[   52.805996]  ? inet_recvmsg+0x5f0/0x5f0
[   52.809946]  ? selinux_socket_sendmsg+0x36/0x40
[   52.814585]  ? security_socket_sendmsg+0x89/0xb0
[   52.819313]  ? inet_recvmsg+0x5f0/0x5f0
[   52.823261]  sock_sendmsg+0xca/0x110
[   52.826947]  SYSC_sendto+0x358/0x5a0
[   52.830633]  ? SYSC_connect+0x480/0x480
[   52.834592]  ? mm_fault_error+0x2c0/0x2c0
[   52.838717]  ? ipv6_setsockopt+0xa8/0x150
[   52.842844]  ? __do_page_fault+0xd60/0xd60
[   52.847063]  ? lockdep_sys_exit+0x47/0xf0
[   52.851183]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   52.855999]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   52.860990]  SyS_sendto+0x40/0x50
[   52.864417]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   52.869141] RIP: 0033:0x43fea9
[   52.872302] RSP: 002b:00007ffeeac76e98 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   52.879985] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   52.887225] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   52.894465] RBP: 0000000000000086 R08: 0000000020e0afe4 R09: 000000000000001c
[   52.901713] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   52.908956] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   52.916348] Dumping ftrace buffer:
[   52.919899]    (ftrace buffer empty)
[   52.923580] Kernel Offset: disabled
[   52.927184] Rebooting in 86400 seconds..