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-net-kasan-gce-5,10.128.0.38' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   40.962614] ------------[ cut here ]------------
[   40.967419] WARNING: CPU: 1 PID: 2985 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   40.975422] Kernel panic - not syncing: panic_on_warn set ...
[   40.975422] 
[   40.982758] CPU: 1 PID: 2985 Comm: syzkaller752672 Not tainted 4.14.0-rc4+ #80
[   40.990087] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   40.999424] Call Trace:
[   41.001984]  dump_stack+0x194/0x257
[   41.005585]  ? arch_local_irq_restore+0x53/0x53
[   41.010238]  panic+0x1e4/0x417
[   41.013402]  ? __warn+0x1d9/0x1d9
[   41.016826]  ? show_regs_print_info+0x65/0x65
[   41.021306]  ? kmalloc_slab+0x5d/0x70
[   41.025076]  __warn+0x1c4/0x1d9
[   41.028327]  ? kmalloc_slab+0x5d/0x70
[   41.032102]  report_bug+0x211/0x2d0
[   41.035706]  fixup_bug+0x40/0x90
[   41.039045]  do_trap+0x260/0x390
[   41.042388]  do_error_trap+0x120/0x390
[   41.046251]  ? do_trap+0x390/0x390
[   41.049763]  ? kmalloc_slab+0x5d/0x70
[   41.053545]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   41.058364]  do_invalid_op+0x1b/0x20
[   41.062050]  invalid_op+0x18/0x20
[   41.065474] RIP: 0010:kmalloc_slab+0x5d/0x70
[   41.069851] RSP: 0018:ffff8801d02474b0 EFLAGS: 00010246
[   41.075186] RAX: 0000000000000000 RBX: ffff8801d0247748 RCX: 0000000000000007
[   41.082426] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   41.089665] RBP: ffff8801d02474b0 R08: ffff8801cd0b31c0 R09: ffff8801d0247b10
[   41.096910] R10: ffff8801cf388040 R11: 0000000000000000 R12: ffff8801d0247ab0
[   41.104149] R13: ffff8801d0247b10 R14: 00000000014080c0 R15: ffff8801cead87c0
[   41.111415]  __kmalloc+0x25/0x760
[   41.114844]  ? inet6_dump_ifaddr+0x30/0x30
[   41.119050]  ? ip6_setup_cork+0x1e8/0x15c0
[   41.123258]  ip6_setup_cork+0x1e8/0x15c0
[   41.127297]  ? __ip6_append_data.isra.43+0x3340/0x3340
[   41.132555]  ip6_make_skb+0x282/0x530
[   41.136327]  ? ip_reply_glue_bits+0xb0/0xb0
[   41.140621]  ? ip6_push_pending_frames+0xe0/0xe0
[   41.145346]  ? ip6_dst_hoplimit+0x10d/0x420
[   41.149638]  ? ip6_route_output_flags+0x1f1/0x2b0
[   41.154461]  ? __lock_is_held+0xbc/0x140
[   41.158505]  ? ip6_dst_hoplimit+0xc1/0x420
[   41.162712]  ? ip6_find_1stfragopt+0x240/0x240
[   41.167274]  udpv6_sendmsg+0x2769/0x3380
[   41.171309]  ? ip_reply_glue_bits+0xb0/0xb0
[   41.175615]  ? udpv6_setsockopt+0x80/0x80
[   41.179732]  ? find_held_lock+0x39/0x1d0
[   41.183778]  ? lock_downgrade+0x990/0x990
[   41.187898]  ? lock_downgrade+0x990/0x990
[   41.192022]  ? lock_release+0xd70/0xd70
[   41.195978]  ? do_raw_spin_trylock+0x190/0x190
[   41.200535]  ? __local_bh_enable_ip+0x9d/0x160
[   41.205089]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   41.210073]  ? release_sock+0x1d4/0x2a0
[   41.214021]  ? _raw_spin_unlock_bh+0x30/0x40
[   41.218398]  ? release_sock+0x1d4/0x2a0
[   41.222352]  ? udp_v6_get_port+0x9c/0xc0
[   41.226395]  inet_sendmsg+0x11f/0x5e0
[   41.230167]  ? inet_sendmsg+0x11f/0x5e0
[   41.234110]  ? __might_sleep+0x95/0x190
[   41.238057]  ? inet_recvmsg+0x5f0/0x5f0
[   41.242003]  ? selinux_socket_sendmsg+0x36/0x40
[   41.246641]  ? security_socket_sendmsg+0x89/0xb0
[   41.251367]  ? inet_recvmsg+0x5f0/0x5f0
[   41.255315]  sock_sendmsg+0xca/0x110
[   41.259018]  SYSC_sendto+0x358/0x5a0
[   41.262714]  ? SYSC_connect+0x480/0x480
[   41.266670]  ? mm_fault_error+0x2c0/0x2c0
[   41.270793]  ? ipv6_setsockopt+0xa8/0x150
[   41.274925]  ? __do_page_fault+0xd60/0xd60
[   41.279145]  ? lockdep_sys_exit+0x47/0xf0
[   41.283266]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   41.288081]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   41.293073]  SyS_sendto+0x40/0x50
[   41.296504]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   41.301229] RIP: 0033:0x43fea9
[   41.304389] RSP: 002b:00007fffad1b3e88 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   41.312071] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   41.319313] RDX: 0000000000000000 RSI: 0000000020fd1000 RDI: 0000000000000003
[   41.326553] RBP: 0000000000000086 R08: 0000000020e0afe4 R09: 000000000000001c
[   41.333794] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   41.341035] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   41.348427] Dumping ftrace buffer:
[   41.351989]    (ftrace buffer empty)
[   41.355674] Kernel Offset: disabled
[   41.359281] Rebooting in 86400 seconds..