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-3,10.128.0.20' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   50.628192] ------------[ cut here ]------------
[   50.633039] WARNING: CPU: 0 PID: 2981 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   50.641120] Kernel panic - not syncing: panic_on_warn set ...
[   50.641120] 
[   50.648461] CPU: 0 PID: 2981 Comm: syzkaller704936 Not tainted 4.14.0-rc4+ #131
[   50.655880] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   50.665207] Call Trace:
[   50.667776]  dump_stack+0x194/0x257
[   50.671381]  ? arch_local_irq_restore+0x53/0x53
[   50.676036]  panic+0x1e4/0x417
[   50.679201]  ? __warn+0x1d9/0x1d9
[   50.682626]  ? show_regs_print_info+0x65/0x65
[   50.687108]  ? kmalloc_slab+0x5d/0x70
[   50.690882]  __warn+0x1c4/0x1d9
[   50.694135]  ? kmalloc_slab+0x5d/0x70
[   50.697910]  report_bug+0x211/0x2d0
[   50.701522]  fixup_bug+0x40/0x90
[   50.704860]  do_trap+0x260/0x390
[   50.708204]  do_error_trap+0x120/0x390
[   50.712065]  ? do_trap+0x390/0x390
[   50.715576]  ? kmalloc_slab+0x5d/0x70
[   50.719350]  ? lock_release+0xd70/0xd70
[   50.723304]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   50.728127]  do_invalid_op+0x1b/0x20
[   50.731814]  invalid_op+0x18/0x20
[   50.735238] RIP: 0010:kmalloc_slab+0x5d/0x70
[   50.739614] RSP: 0018:ffff8801cebc74b0 EFLAGS: 00010246
[   50.744954] RAX: 0000000000000000 RBX: ffff8801cebc7748 RCX: 0000000000000007
[   50.752198] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   50.759439] RBP: ffff8801cebc74b0 R08: ffff8801dad86380 R09: ffff8801cebc7b10
[   50.766680] R10: ffff8801ce40c1c0 R11: 0000000000000000 R12: ffff8801cebc7ab0
[   50.773927] R13: ffff8801cebc7b10 R14: 00000000014080c0 R15: ffff8801cead97c0
[   50.781197]  __kmalloc+0x25/0x760
[   50.784631]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   50.789273]  ? ip6_setup_cork+0x1e8/0x15c0
[   50.793484]  ip6_setup_cork+0x1e8/0x15c0
[   50.797536]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   50.802794]  ip6_make_skb+0x282/0x530
[   50.806574]  ? ip_reply_glue_bits+0xb0/0xb0
[   50.810873]  ? ip6_push_pending_frames+0xe0/0xe0
[   50.815602]  ? ip6_dst_hoplimit+0x10d/0x420
[   50.819899]  ? ip6_route_output_flags+0x1f1/0x2b0
[   50.824733]  ? __lock_is_held+0xbc/0x140
[   50.828779]  ? ip6_dst_hoplimit+0xc1/0x420
[   50.832987]  ? ip6_find_1stfragopt+0x240/0x240
[   50.837550]  udpv6_sendmsg+0x2769/0x3380
[   50.841587]  ? ip_reply_glue_bits+0xb0/0xb0
[   50.845898]  ? udpv6_setsockopt+0x80/0x80
[   50.850020]  ? find_held_lock+0x39/0x1d0
[   50.854068]  ? lock_downgrade+0x990/0x990
[   50.858188]  ? lock_downgrade+0x990/0x990
[   50.862308]  ? lock_release+0xd70/0xd70
[   50.866266]  ? do_raw_spin_trylock+0x190/0x190
[   50.870827]  ? __local_bh_enable_ip+0x9d/0x160
[   50.875384]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   50.880371]  ? release_sock+0x1d4/0x2a0
[   50.884323]  ? _raw_spin_unlock_bh+0x30/0x40
[   50.888701]  ? release_sock+0x1d4/0x2a0
[   50.892659]  ? udp_v6_get_port+0x9c/0xc0
[   50.896703]  inet_sendmsg+0x11f/0x5e0
[   50.900475]  ? inet_sendmsg+0x11f/0x5e0
[   50.904423]  ? __might_sleep+0x95/0x190
[   50.908370]  ? inet_recvmsg+0x5f0/0x5f0
[   50.912323]  ? selinux_socket_sendmsg+0x36/0x40
[   50.916968]  ? security_socket_sendmsg+0x89/0xb0
[   50.921699]  ? inet_recvmsg+0x5f0/0x5f0
[   50.925651]  sock_sendmsg+0xca/0x110
[   50.929340]  SYSC_sendto+0x358/0x5a0
[   50.933030]  ? SYSC_connect+0x480/0x480
[   50.936991]  ? mm_fault_error+0x2c0/0x2c0
[   50.941114]  ? ipv6_setsockopt+0xa8/0x150
[   50.945241]  ? __do_page_fault+0xd60/0xd60
[   50.949460]  ? lockdep_sys_exit+0x47/0xf0
[   50.953581]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   50.958398]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   50.963390]  SyS_sendto+0x40/0x50
[   50.966823]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   50.971552] RIP: 0033:0x43fea9
[   50.974712] RSP: 002b:00007fff3fe0b3d8 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   50.982393] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   50.989634] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   50.996877] RBP: 0000000000000086 R08: 0000000020e0afe4 R09: 000000000000001c
[   51.004118] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   51.011361] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   51.018810] Dumping ftrace buffer:
[   51.022384]    (ftrace buffer empty)
[   51.026074] Kernel Offset: disabled
[   51.029684] Rebooting in 86400 seconds..