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-6,10.128.0.2' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   41.210833] ------------[ cut here ]------------
[   41.215672] WARNING: CPU: 0 PID: 2989 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   41.223749] Kernel panic - not syncing: panic_on_warn set ...
[   41.223749] 
[   41.231092] CPU: 0 PID: 2989 Comm: syzkaller120422 Not tainted 4.14.0-rc3+ #118
[   41.238516] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   41.247847] Call Trace:
[   41.250418]  dump_stack+0x194/0x257
[   41.254025]  ? arch_local_irq_restore+0x53/0x53
[   41.258685]  panic+0x1e4/0x417
[   41.261852]  ? __warn+0x1d9/0x1d9
[   41.265279]  ? show_regs_print_info+0x65/0x65
[   41.269766]  ? kmalloc_slab+0x5d/0x70
[   41.273539]  __warn+0x1c4/0x1d9
[   41.276794]  ? kmalloc_slab+0x5d/0x70
[   41.280569]  report_bug+0x211/0x2d0
[   41.284173]  fixup_bug+0x40/0x90
[   41.287512]  do_trap+0x260/0x390
[   41.290859]  do_error_trap+0x120/0x390
[   41.294724]  ? do_trap+0x390/0x390
[   41.298237]  ? kmalloc_slab+0x5d/0x70
[   41.302013]  ? lock_release+0xd70/0xd70
[   41.305970]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   41.310794]  do_invalid_op+0x1b/0x20
[   41.314485]  invalid_op+0x18/0x20
[   41.317911] RIP: 0010:kmalloc_slab+0x5d/0x70
[   41.322290] RSP: 0018:ffff8801ce13f4b0 EFLAGS: 00010246
[   41.327629] RAX: 0000000000000000 RBX: ffff8801ce13f748 RCX: 0000000000000007
[   41.334871] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   41.342112] RBP: ffff8801ce13f4b0 R08: ffff8801ceabde00 R09: ffff8801ce13fb10
[   41.349353] R10: ffff8801cebde180 R11: 0000000000000000 R12: ffff8801ce13fab0
[   41.356598] R13: ffff8801ce13fb10 R14: 00000000014080c0 R15: ffff8801ceb5b7c0
[   41.363864]  __kmalloc+0x25/0x760
[   41.367295]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   41.371935]  ? ip6_setup_cork+0x1e8/0x15c0
[   41.376147]  ip6_setup_cork+0x1e8/0x15c0
[   41.380186]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   41.385448]  ip6_make_skb+0x282/0x530
[   41.389227]  ? ip_reply_glue_bits+0xb0/0xb0
[   41.393523]  ? ip6_push_pending_frames+0xe0/0xe0
[   41.398254]  ? ip6_dst_hoplimit+0x10d/0x420
[   41.402548]  ? ip6_route_output_flags+0x1f1/0x2b0
[   41.407374]  ? __lock_is_held+0xbc/0x140
[   41.411420]  ? ip6_dst_hoplimit+0xc1/0x420
[   41.415628]  ? ip6_find_1stfragopt+0x240/0x240
[   41.420196]  udpv6_sendmsg+0x2769/0x3380
[   41.424234]  ? ip_reply_glue_bits+0xb0/0xb0
[   41.428541]  ? udpv6_setsockopt+0x80/0x80
[   41.432662]  ? find_held_lock+0x39/0x1d0
[   41.436710]  ? lock_downgrade+0x990/0x990
[   41.440829]  ? lock_downgrade+0x990/0x990
[   41.444950]  ? lock_release+0xd70/0xd70
[   41.448907]  ? do_raw_spin_trylock+0x190/0x190
[   41.453469]  ? __local_bh_enable_ip+0x9d/0x160
[   41.458288]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   41.463277]  ? release_sock+0x1d4/0x2a0
[   41.467230]  ? _raw_spin_unlock_bh+0x30/0x40
[   41.471611]  ? release_sock+0x1d4/0x2a0
[   41.475566]  ? udp_v6_get_port+0x9c/0xc0
[   41.479609]  inet_sendmsg+0x11f/0x5e0
[   41.483381]  ? inet_sendmsg+0x11f/0x5e0
[   41.487328]  ? __might_sleep+0x95/0x190
[   41.491274]  ? inet_recvmsg+0x5f0/0x5f0
[   41.495224]  ? selinux_socket_sendmsg+0x36/0x40
[   41.499863]  ? security_socket_sendmsg+0x89/0xb0
[   41.504591]  ? inet_recvmsg+0x5f0/0x5f0
[   41.508540]  sock_sendmsg+0xca/0x110
[   41.512228]  SYSC_sendto+0x358/0x5a0
[   41.515919]  ? SYSC_connect+0x480/0x480
[   41.519876]  ? mm_fault_error+0x2c0/0x2c0
[   41.523999]  ? ipv6_setsockopt+0xa8/0x150
[   41.528129]  ? __do_page_fault+0xd60/0xd60
[   41.532349]  ? lockdep_sys_exit+0x47/0xf0
[   41.536470]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   41.541286]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   41.546277]  SyS_sendto+0x40/0x50
[   41.549707]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   41.554436] RIP: 0033:0x43fea9
[   41.557598] RSP: 002b:00007ffe40b35e38 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   41.565281] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   41.572524] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   41.579768] RBP: 0000000000000086 R08: 0000000020e0afe4 R09: 000000000000001c
[   41.587009] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401810
[   41.594250] R13: 00000000004018a0 R14: 0000000000000000 R15: 0000000000000000
[   41.601669] Dumping ftrace buffer:
[   41.605236]    (ftrace buffer empty)
[   41.608922] Kernel Offset: disabled
[   41.612533] Rebooting in 86400 seconds..