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-5,10.128.0.50' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   39.566401] ------------[ cut here ]------------
[   39.571210] WARNING: CPU: 0 PID: 2978 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   39.579203] Kernel panic - not syncing: panic_on_warn set ...
[   39.579203] 
[   39.586539] CPU: 0 PID: 2978 Comm: syzkaller799086 Not tainted 4.14.0-rc4+ #131
[   39.593954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   39.603277] Call Trace:
[   39.605837]  dump_stack+0x194/0x257
[   39.609441]  ? arch_local_irq_restore+0x53/0x53
[   39.614095]  panic+0x1e4/0x417
[   39.617262]  ? __warn+0x1d9/0x1d9
[   39.620684]  ? show_regs_print_info+0x65/0x65
[   39.625166]  ? kmalloc_slab+0x5d/0x70
[   39.628935]  __warn+0x1c4/0x1d9
[   39.632187]  ? kmalloc_slab+0x5d/0x70
[   39.635960]  report_bug+0x211/0x2d0
[   39.639562]  fixup_bug+0x40/0x90
[   39.642898]  do_trap+0x260/0x390
[   39.646243]  do_error_trap+0x120/0x390
[   39.650105]  ? do_trap+0x390/0x390
[   39.653615]  ? kmalloc_slab+0x5d/0x70
[   39.657387]  ? lock_release+0xd70/0xd70
[   39.661337]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   39.666156]  do_invalid_op+0x1b/0x20
[   39.669840]  invalid_op+0x18/0x20
[   39.673263] RIP: 0010:kmalloc_slab+0x5d/0x70
[   39.677637] RSP: 0018:ffff8801ce6074b0 EFLAGS: 00010246
[   39.682973] RAX: 0000000000000000 RBX: ffff8801ce607748 RCX: 0000000000000007
[   39.690213] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   39.697456] RBP: ffff8801ce6074b0 R08: ffff8801dad50e00 R09: ffff8801ce607b10
[   39.704695] R10: ffff8801cf3765c0 R11: 0000000000000000 R12: ffff8801ce607ab0
[   39.711934] R13: ffff8801ce607b10 R14: 00000000014080c0 R15: ffff8801d95d67c0
[   39.719196]  __kmalloc+0x25/0x760
[   39.722624]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   39.727261]  ? ip6_setup_cork+0x1e8/0x15c0
[   39.731473]  ip6_setup_cork+0x1e8/0x15c0
[   39.735511]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   39.740768]  ip6_make_skb+0x282/0x530
[   39.744544]  ? ip_reply_glue_bits+0xb0/0xb0
[   39.748837]  ? ip6_push_pending_frames+0xe0/0xe0
[   39.753564]  ? ip6_dst_hoplimit+0x10d/0x420
[   39.757855]  ? ip6_route_output_flags+0x1f1/0x2b0
[   39.762677]  ? __lock_is_held+0xbc/0x140
[   39.766719]  ? ip6_dst_hoplimit+0xc1/0x420
[   39.770926]  ? ip6_find_1stfragopt+0x240/0x240
[   39.775486]  udpv6_sendmsg+0x2769/0x3380
[   39.779520]  ? ip_reply_glue_bits+0xb0/0xb0
[   39.783823]  ? udpv6_setsockopt+0x80/0x80
[   39.787939]  ? find_held_lock+0x39/0x1d0
[   39.791985]  ? lock_downgrade+0x990/0x990
[   39.796105]  ? lock_downgrade+0x990/0x990
[   39.800224]  ? lock_release+0xd70/0xd70
[   39.804181]  ? do_raw_spin_trylock+0x190/0x190
[   39.808739]  ? __local_bh_enable_ip+0x9d/0x160
[   39.813295]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   39.818280]  ? release_sock+0x1d4/0x2a0
[   39.822228]  ? _raw_spin_unlock_bh+0x30/0x40
[   39.826608]  ? release_sock+0x1d4/0x2a0
[   39.830560]  ? udp_v6_get_port+0x9c/0xc0
[   39.834599]  inet_sendmsg+0x11f/0x5e0
[   39.838368]  ? inet_sendmsg+0x11f/0x5e0
[   39.842311]  ? __might_sleep+0x95/0x190
[   39.846254]  ? inet_recvmsg+0x5f0/0x5f0
[   39.850204]  ? selinux_socket_sendmsg+0x36/0x40
[   39.854844]  ? security_socket_sendmsg+0x89/0xb0
[   39.859569]  ? inet_recvmsg+0x5f0/0x5f0
[   39.863515]  sock_sendmsg+0xca/0x110
[   39.867202]  SYSC_sendto+0x358/0x5a0
[   39.870890]  ? SYSC_connect+0x480/0x480
[   39.874845]  ? mm_fault_error+0x2c0/0x2c0
[   39.878967]  ? ipv6_setsockopt+0xa8/0x150
[   39.883103]  ? __do_page_fault+0xd60/0xd60
[   39.887326]  ? lockdep_sys_exit+0x47/0xf0
[   39.891445]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   39.896261]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   39.901251]  SyS_sendto+0x40/0x50
[   39.904682]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   39.909406] RIP: 0033:0x43fea9
[   39.912565] RSP: 002b:00007ffea7b8db48 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   39.920244] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   39.927485] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   39.934738] RBP: 0000000000000086 R08: 0000000020e0afe4 R09: 000000000000001c
[   39.942478] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   39.949724] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   39.957139] Dumping ftrace buffer:
[   39.960683]    (ftrace buffer empty)
[   39.964364] Kernel Offset: disabled
[   39.967969] Rebooting in 86400 seconds..