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-386-1,10.128.0.37' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   50.067624] ------------[ cut here ]------------
[   50.072444] WARNING: CPU: 1 PID: 2986 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   50.080515] Kernel panic - not syncing: panic_on_warn set ...
[   50.080515] 
[   50.087852] CPU: 1 PID: 2986 Comm: syzkaller288125 Not tainted 4.14.0-rc4+ #41
[   50.095179] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   50.104501] Call Trace:
[   50.107063]  dump_stack+0x194/0x257
[   50.110667]  ? arch_local_irq_restore+0x53/0x53
[   50.115317]  panic+0x1e4/0x417
[   50.118481]  ? __warn+0x1d9/0x1d9
[   50.121905]  ? show_regs_print_info+0x65/0x65
[   50.126385]  ? kmalloc_slab+0x5d/0x70
[   50.130153]  __warn+0x1c4/0x1d9
[   50.133405]  ? kmalloc_slab+0x5d/0x70
[   50.137178]  report_bug+0x211/0x2d0
[   50.140782]  fixup_bug+0x40/0x90
[   50.144119]  do_trap+0x260/0x390
[   50.147464]  do_error_trap+0x120/0x390
[   50.151325]  ? do_trap+0x390/0x390
[   50.154841]  ? kmalloc_slab+0x5d/0x70
[   50.158614]  ? lock_release+0xd70/0xd70
[   50.162566]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   50.167385]  do_invalid_op+0x1b/0x20
[   50.171071]  invalid_op+0x18/0x20
[   50.174495] RIP: 0010:kmalloc_slab+0x5d/0x70
[   50.178872] RSP: 0018:ffff8801d02c7310 EFLAGS: 00010246
[   50.184209] RAX: 0000000000000000 RBX: ffff8801d02c75a8 RCX: 0000000000000007
[   50.191450] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffffffff
[   50.198689] RBP: ffff8801d02c7310 R08: ffff8801d30c9380 R09: ffff8801d02c7970
[   50.205927] R10: ffff8801ce47e340 R11: 0000000000000000 R12: ffff8801d02c7910
[   50.213167] R13: ffff8801d02c7970 R14: 00000000014080c0 R15: ffff8801cf1277c0
[   50.220429]  __kmalloc+0x25/0x760
[   50.223865]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   50.228503]  ? ip6_setup_cork+0x1e8/0x15c0
[   50.232711]  ip6_setup_cork+0x1e8/0x15c0
[   50.236749]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   50.242005]  ip6_make_skb+0x282/0x530
[   50.245778]  ? ip_reply_glue_bits+0xb0/0xb0
[   50.250073]  ? ip6_push_pending_frames+0xe0/0xe0
[   50.254800]  ? ip6_dst_hoplimit+0x10d/0x420
[   50.259098]  ? ip6_route_output_flags+0x1f1/0x2b0
[   50.263924]  ? __lock_is_held+0xbc/0x140
[   50.267968]  ? ip6_dst_hoplimit+0xc1/0x420
[   50.272173]  ? ip6_find_1stfragopt+0x240/0x240
[   50.276733]  udpv6_sendmsg+0x2769/0x3380
[   50.280767]  ? ip_reply_glue_bits+0xb0/0xb0
[   50.285072]  ? udpv6_setsockopt+0x80/0x80
[   50.289202]  ? lock_downgrade+0x990/0x990
[   50.293319]  ? lock_downgrade+0x990/0x990
[   50.297441]  ? lock_release+0xd70/0xd70
[   50.301408]  ? __local_bh_enable_ip+0x9d/0x160
[   50.305962]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   50.310948]  ? release_sock+0x1d4/0x2a0
[   50.314899]  ? _raw_spin_unlock_bh+0x30/0x40
[   50.319285]  ? release_sock+0x1d4/0x2a0
[   50.323236]  ? udp_v6_get_port+0x9c/0xc0
[   50.327274]  inet_sendmsg+0x11f/0x5e0
[   50.331044]  ? inet_sendmsg+0x11f/0x5e0
[   50.334989]  ? __might_sleep+0x95/0x190
[   50.338936]  ? inet_recvmsg+0x5f0/0x5f0
[   50.342884]  ? selinux_socket_sendmsg+0x36/0x40
[   50.347524]  ? security_socket_sendmsg+0x89/0xb0
[   50.352247]  ? inet_recvmsg+0x5f0/0x5f0
[   50.356196]  sock_sendmsg+0xca/0x110
[   50.359883]  SYSC_sendto+0x358/0x5a0
[   50.363574]  ? SYSC_connect+0x480/0x480
[   50.367546]  ? __handle_mm_fault+0x39c0/0x39c0
[   50.372098]  ? vmacache_find+0x5f/0x280
[   50.376050]  ? up_read+0x1a/0x40
[   50.379390]  ? __do_page_fault+0x3d6/0xd60
[   50.383603]  SyS_sendto+0x40/0x50
[   50.387027]  ? SyS_getpeername+0x30/0x30
[   50.391062]  do_fast_syscall_32+0x3f2/0xf05
[   50.395361]  ? do_int80_syscall_32+0x940/0x940
[   50.399917]  ? kasan_check_read+0x11/0x20
[   50.404036]  ? syscall_return_slowpath+0x510/0x510
[   50.408938]  ? SyS_rt_sigaction+0x94/0x1b0
[   50.413150]  ? lockdep_sys_exit+0x47/0xf0
[   50.417268]  ? retint_user+0x18/0x20
[   50.420957]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   50.425778]  entry_SYSENTER_compat+0x51/0x60
[   50.430154] RIP: 0023:0xf7f5cc79
[   50.433487] RSP: 002b:00000000ffbdbecc EFLAGS: 00000286 ORIG_RAX: 0000000000000171
[   50.441177] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000002052bfcc
[   50.448417] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020e0afe4
[   50.455657] RBP: 000000000000001c R08: 0000000000000000 R09: 0000000000000000
[   50.462894] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   50.470133] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   50.477553] Dumping ftrace buffer:
[   50.481106]    (ftrace buffer empty)
[   50.484797] Kernel Offset: disabled
[   50.488402] Rebooting in 86400 seconds..