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-1,10.128.0.41' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   40.766996] ------------[ cut here ]------------
[   40.771818] WARNING: CPU: 0 PID: 2990 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   40.779866] Kernel panic - not syncing: panic_on_warn set ...
[   40.779866] 
[   40.787206] CPU: 0 PID: 2990 Comm: syzkaller379102 Not tainted 4.14.0-rc4+ #127
[   40.794625] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   40.803951] Call Trace:
[   40.806514]  dump_stack+0x194/0x257
[   40.810116]  ? arch_local_irq_restore+0x53/0x53
[   40.814771]  panic+0x1e4/0x417
[   40.817938]  ? __warn+0x1d9/0x1d9
[   40.821363]  ? show_regs_print_info+0x65/0x65
[   40.825847]  ? kmalloc_slab+0x5d/0x70
[   40.829623]  __warn+0x1c4/0x1d9
[   40.832876]  ? kmalloc_slab+0x5d/0x70
[   40.836651]  report_bug+0x211/0x2d0
[   40.840257]  fixup_bug+0x40/0x90
[   40.843598]  do_trap+0x260/0x390
[   40.846949]  do_error_trap+0x120/0x390
[   40.850814]  ? do_trap+0x390/0x390
[   40.854328]  ? kmalloc_slab+0x5d/0x70
[   40.858100]  ? lock_release+0xd70/0xd70
[   40.862054]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   40.866877]  do_invalid_op+0x1b/0x20
[   40.870568]  invalid_op+0x18/0x20
[   40.873992] RIP: 0010:kmalloc_slab+0x5d/0x70
[   40.878370] RSP: 0018:ffff8801ce7bf4b0 EFLAGS: 00010246
[   40.883707] RAX: 0000000000000000 RBX: ffff8801ce7bf748 RCX: 0000000000000007
[   40.890948] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   40.898188] RBP: ffff8801ce7bf4b0 R08: ffff8801d54688c0 R09: ffff8801ce7bfb10
[   40.905614] R10: ffff8801ce934040 R11: 0000000000000000 R12: ffff8801ce7bfab0
[   40.912856] R13: ffff8801ce7bfb10 R14: 00000000014080c0 R15: ffff8801ce7da7c0
[   40.920118]  __kmalloc+0x25/0x760
[   40.923550]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   40.928188]  ? ip6_setup_cork+0x1e8/0x15c0
[   40.932400]  ip6_setup_cork+0x1e8/0x15c0
[   40.936438]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   40.941697]  ip6_make_skb+0x282/0x530
[   40.945470]  ? ip_reply_glue_bits+0xb0/0xb0
[   40.949764]  ? ip6_push_pending_frames+0xe0/0xe0
[   40.954487]  ? ip6_dst_hoplimit+0x10d/0x420
[   40.958777]  ? ip6_route_output_flags+0x1f1/0x2b0
[   40.963602]  ? __lock_is_held+0xbc/0x140
[   40.967646]  ? ip6_dst_hoplimit+0xc1/0x420
[   40.971851]  ? ip6_find_1stfragopt+0x240/0x240
[   40.976410]  udpv6_sendmsg+0x2769/0x3380
[   40.980442]  ? ip_reply_glue_bits+0xb0/0xb0
[   40.984746]  ? udpv6_setsockopt+0x80/0x80
[   40.988863]  ? find_held_lock+0x39/0x1d0
[   40.992903]  ? lock_downgrade+0x990/0x990
[   40.997020]  ? lock_downgrade+0x990/0x990
[   41.001139]  ? lock_release+0xd70/0xd70
[   41.005094]  ? do_raw_spin_trylock+0x190/0x190
[   41.009655]  ? __local_bh_enable_ip+0x9d/0x160
[   41.014207]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   41.019192]  ? release_sock+0x1d4/0x2a0
[   41.023143]  ? _raw_spin_unlock_bh+0x30/0x40
[   41.027529]  ? release_sock+0x1d4/0x2a0
[   41.031483]  ? udp_v6_get_port+0x9c/0xc0
[   41.035524]  inet_sendmsg+0x11f/0x5e0
[   41.039294]  ? inet_sendmsg+0x11f/0x5e0
[   41.043241]  ? __might_sleep+0x95/0x190
[   41.047196]  ? inet_recvmsg+0x5f0/0x5f0
[   41.051147]  ? selinux_socket_sendmsg+0x36/0x40
[   41.055791]  ? security_socket_sendmsg+0x89/0xb0
[   41.060517]  ? inet_recvmsg+0x5f0/0x5f0
[   41.064465]  sock_sendmsg+0xca/0x110
[   41.068153]  SYSC_sendto+0x358/0x5a0
[   41.071841]  ? SYSC_connect+0x480/0x480
[   41.075799]  ? mm_fault_error+0x2c0/0x2c0
[   41.079925]  ? ipv6_setsockopt+0xa8/0x150
[   41.084056]  ? __do_page_fault+0xd60/0xd60
[   41.088284]  ? lockdep_sys_exit+0x47/0xf0
[   41.092407]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   41.097224]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   41.102216]  SyS_sendto+0x40/0x50
[   41.105655]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   41.110382] RIP: 0033:0x43fea9
[   41.113542] RSP: 002b:00007fffb57eb068 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   41.121224] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   41.128465] RDX: 0000000000000000 RSI: 0000000020fd1000 RDI: 0000000000000003
[   41.135707] RBP: 0000000000000086 R08: 0000000020e0afe4 R09: 000000000000001c
[   41.142949] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   41.150191] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   41.157592] Dumping ftrace buffer:
[   41.161156]    (ftrace buffer empty)
[   41.164839] Kernel Offset: disabled
[   41.168446] Rebooting in 86400 seconds..