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-7,10.128.15.212' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   40.537943] ------------[ cut here ]------------
[   40.542741] WARNING: CPU: 1 PID: 2984 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   40.550765] Kernel panic - not syncing: panic_on_warn set ...
[   40.550765] 
[   40.558102] CPU: 1 PID: 2984 Comm: syzkaller630886 Not tainted 4.14.0-rc4+ #80
[   40.565431] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   40.574766] Call Trace:
[   40.577327]  dump_stack+0x194/0x257
[   40.580930]  ? arch_local_irq_restore+0x53/0x53
[   40.585581]  panic+0x1e4/0x417
[   40.588745]  ? __warn+0x1d9/0x1d9
[   40.592167]  ? show_regs_print_info+0x65/0x65
[   40.596645]  ? kmalloc_slab+0x5d/0x70
[   40.600419]  __warn+0x1c4/0x1d9
[   40.603673]  ? kmalloc_slab+0x5d/0x70
[   40.607447]  report_bug+0x211/0x2d0
[   40.611052]  fixup_bug+0x40/0x90
[   40.614391]  do_trap+0x260/0x390
[   40.617734]  do_error_trap+0x120/0x390
[   40.621606]  ? do_trap+0x390/0x390
[   40.625120]  ? kmalloc_slab+0x5d/0x70
[   40.628904]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   40.633726]  do_invalid_op+0x1b/0x20
[   40.637411]  invalid_op+0x18/0x20
[   40.640835] RIP: 0010:kmalloc_slab+0x5d/0x70
[   40.645210] RSP: 0018:ffff8801ce7574b0 EFLAGS: 00010246
[   40.650545] RAX: 0000000000000000 RBX: ffff8801ce757748 RCX: 0000000000000007
[   40.657786] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   40.665026] RBP: ffff8801ce7574b0 R08: ffff8801ce59fe00 R09: ffff8801ce757b10
[   40.672267] R10: ffff8801ce86a100 R11: 0000000000000000 R12: ffff8801ce757ab0
[   40.679505] R13: ffff8801ce757b10 R14: 00000000014080c0 R15: ffff8801ce6d27c0
[   40.686767]  __kmalloc+0x25/0x760
[   40.690194]  ? inet6_dump_ifaddr+0x30/0x30
[   40.694398]  ? ip6_setup_cork+0x1e8/0x15c0
[   40.698606]  ip6_setup_cork+0x1e8/0x15c0
[   40.702645]  ? __ip6_append_data.isra.43+0x3340/0x3340
[   40.707903]  ip6_make_skb+0x282/0x530
[   40.711675]  ? ip_reply_glue_bits+0xb0/0xb0
[   40.715973]  ? ip6_push_pending_frames+0xe0/0xe0
[   40.720699]  ? ip6_dst_hoplimit+0x10d/0x420
[   40.724991]  ? ip6_route_output_flags+0x1f1/0x2b0
[   40.729817]  ? __lock_is_held+0xbc/0x140
[   40.733874]  ? ip6_dst_hoplimit+0xc1/0x420
[   40.738082]  ? ip6_find_1stfragopt+0x240/0x240
[   40.742640]  udpv6_sendmsg+0x2769/0x3380
[   40.746674]  ? ip_reply_glue_bits+0xb0/0xb0
[   40.750978]  ? udpv6_setsockopt+0x80/0x80
[   40.755094]  ? find_held_lock+0x39/0x1d0
[   40.759139]  ? lock_downgrade+0x990/0x990
[   40.763256]  ? lock_downgrade+0x990/0x990
[   40.767378]  ? lock_release+0xd70/0xd70
[   40.771334]  ? do_raw_spin_trylock+0x190/0x190
[   40.775893]  ? __local_bh_enable_ip+0x9d/0x160
[   40.780451]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   40.785439]  ? release_sock+0x1d4/0x2a0
[   40.789388]  ? _raw_spin_unlock_bh+0x30/0x40
[   40.793765]  ? release_sock+0x1d4/0x2a0
[   40.797723]  ? udp_v6_get_port+0x9c/0xc0
[   40.801762]  inet_sendmsg+0x11f/0x5e0
[   40.805530]  ? inet_sendmsg+0x11f/0x5e0
[   40.809474]  ? __might_sleep+0x95/0x190
[   40.813419]  ? inet_recvmsg+0x5f0/0x5f0
[   40.817366]  ? selinux_socket_sendmsg+0x36/0x40
[   40.822015]  ? security_socket_sendmsg+0x89/0xb0
[   40.826756]  ? inet_recvmsg+0x5f0/0x5f0
[   40.830717]  sock_sendmsg+0xca/0x110
[   40.834412]  SYSC_sendto+0x358/0x5a0
[   40.838107]  ? SYSC_connect+0x480/0x480
[   40.842067]  ? mm_fault_error+0x2c0/0x2c0
[   40.846191]  ? ipv6_setsockopt+0xa8/0x150
[   40.850321]  ? __do_page_fault+0xd60/0xd60
[   40.854539]  ? lockdep_sys_exit+0x47/0xf0
[   40.858661]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   40.863476]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   40.868466]  SyS_sendto+0x40/0x50
[   40.871896]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   40.876623] RIP: 0033:0x43fea9
[   40.879784] RSP: 002b:00007ffcd7f084a8 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   40.887464] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   40.894706] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   40.901946] RBP: 0000000000000086 R08: 0000000020e0afe4 R09: 000000000000001c
[   40.909187] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   40.916427] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   40.923811] Dumping ftrace buffer:
[   40.927370]    (ftrace buffer empty)
[   40.931061] Kernel Offset: disabled
[   40.934668] Rebooting in 86400 seconds..