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-2,10.128.0.29' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   33.181488] ------------[ cut here ]------------
[   33.186322] WARNING: CPU: 1 PID: 2981 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   33.194431] Kernel panic - not syncing: panic_on_warn set ...
[   33.194431] 
[   33.201780] CPU: 1 PID: 2981 Comm: syzkaller236219 Not tainted 4.14.0-rc4+ #130
[   33.209195] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.218517] Call Trace:
[   33.221081]  dump_stack+0x194/0x257
[   33.224684]  ? arch_local_irq_restore+0x53/0x53
[   33.229340]  panic+0x1e4/0x417
[   33.232504]  ? __warn+0x1d9/0x1d9
[   33.235930]  ? show_regs_print_info+0x65/0x65
[   33.240412]  ? kmalloc_slab+0x5d/0x70
[   33.244184]  __warn+0x1c4/0x1d9
[   33.247434]  ? kmalloc_slab+0x5d/0x70
[   33.251209]  report_bug+0x211/0x2d0
[   33.254815]  fixup_bug+0x40/0x90
[   33.258155]  do_trap+0x260/0x390
[   33.261500]  do_error_trap+0x120/0x390
[   33.265365]  ? do_trap+0x390/0x390
[   33.268878]  ? kmalloc_slab+0x5d/0x70
[   33.272652]  ? lock_release+0xd70/0xd70
[   33.276612]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.281432]  do_invalid_op+0x1b/0x20
[   33.285120]  invalid_op+0x18/0x20
[   33.288545] RIP: 0010:kmalloc_slab+0x5d/0x70
[   33.292919] RSP: 0018:ffff8801ce7174b0 EFLAGS: 00010246
[   33.298255] RAX: 0000000000000000 RBX: ffff8801ce717748 RCX: 0000000000000007
[   33.305494] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   33.312734] RBP: ffff8801ce7174b0 R08: ffff8801d40e6a80 R09: ffff8801ce717b10
[   33.319973] R10: ffff8801ce4e0200 R11: 0000000000000000 R12: ffff8801ce717ab0
[   33.327212] R13: ffff8801ce717b10 R14: 00000000014080c0 R15: ffff8801cf6ac7c0
[   33.334472]  __kmalloc+0x25/0x760
[   33.337902]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   33.342541]  ? ip6_setup_cork+0x1e8/0x15c0
[   33.346750]  ip6_setup_cork+0x1e8/0x15c0
[   33.350790]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   33.356047]  ip6_make_skb+0x282/0x530
[   33.359821]  ? ip_reply_glue_bits+0xb0/0xb0
[   33.364114]  ? ip6_push_pending_frames+0xe0/0xe0
[   33.368839]  ? ip6_dst_hoplimit+0x10d/0x420
[   33.373132]  ? ip6_route_output_flags+0x1f1/0x2b0
[   33.377956]  ? __lock_is_held+0xbc/0x140
[   33.382000]  ? ip6_dst_hoplimit+0xc1/0x420
[   33.386206]  ? ip6_find_1stfragopt+0x240/0x240
[   33.390767]  udpv6_sendmsg+0x2769/0x3380
[   33.394801]  ? ip_reply_glue_bits+0xb0/0xb0
[   33.399106]  ? udpv6_setsockopt+0x80/0x80
[   33.403224]  ? find_held_lock+0x39/0x1d0
[   33.407270]  ? lock_downgrade+0x990/0x990
[   33.411391]  ? lock_downgrade+0x990/0x990
[   33.415510]  ? lock_release+0xd70/0xd70
[   33.419468]  ? do_raw_spin_trylock+0x190/0x190
[   33.424027]  ? __local_bh_enable_ip+0x9d/0x160
[   33.428586]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   33.433576]  ? release_sock+0x1d4/0x2a0
[   33.437525]  ? _raw_spin_unlock_bh+0x30/0x40
[   33.441906]  ? release_sock+0x1d4/0x2a0
[   33.445858]  ? udp_v6_get_port+0x9c/0xc0
[   33.449897]  inet_sendmsg+0x11f/0x5e0
[   33.453673]  ? inet_sendmsg+0x11f/0x5e0
[   33.457619]  ? __might_sleep+0x95/0x190
[   33.461564]  ? inet_recvmsg+0x5f0/0x5f0
[   33.465515]  ? selinux_socket_sendmsg+0x36/0x40
[   33.470153]  ? security_socket_sendmsg+0x89/0xb0
[   33.474879]  ? inet_recvmsg+0x5f0/0x5f0
[   33.478824]  sock_sendmsg+0xca/0x110
[   33.482511]  SYSC_sendto+0x358/0x5a0
[   33.486201]  ? SYSC_connect+0x480/0x480
[   33.490158]  ? mm_fault_error+0x2c0/0x2c0
[   33.494282]  ? ipv6_setsockopt+0xa8/0x150
[   33.498411]  ? __do_page_fault+0xd60/0xd60
[   33.502628]  ? lockdep_sys_exit+0x47/0xf0
[   33.506748]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   33.511563]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   33.516556]  SyS_sendto+0x40/0x50
[   33.519987]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   33.524712] RIP: 0033:0x43fea9
[   33.527873] RSP: 002b:00007ffda3d01778 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   33.535553] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   33.542794] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   33.550036] RBP: 0000000000000086 R08: 0000000020e0afe4 R09: 000000000000001c
[   33.557275] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   33.564515] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   33.571950] Dumping ftrace buffer:
[   33.575520]    (ftrace buffer empty)
[   33.579202] Kernel Offset: disabled
[   33.582809] Rebooting in 86400 seconds..