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-386-0,10.128.0.52' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   32.105649] ------------[ cut here ]------------
[   32.110439] WARNING: CPU: 1 PID: 2982 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   32.118448] Kernel panic - not syncing: panic_on_warn set ...
[   32.118448] 
[   32.125787] CPU: 1 PID: 2982 Comm: syzkaller565227 Not tainted 4.14.0-rc3+ #25
[   32.133119] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.142447] Call Trace:
[   32.145014]  dump_stack+0x194/0x257
[   32.148621]  ? arch_local_irq_restore+0x53/0x53
[   32.153274]  panic+0x1e4/0x417
[   32.156439]  ? __warn+0x1d9/0x1d9
[   32.159864]  ? show_regs_print_info+0x65/0x65
[   32.164348]  ? kmalloc_slab+0x5d/0x70
[   32.168120]  __warn+0x1c4/0x1d9
[   32.171370]  ? kmalloc_slab+0x5d/0x70
[   32.175150]  report_bug+0x211/0x2d0
[   32.178758]  fixup_bug+0x40/0x90
[   32.182099]  do_trap+0x260/0x390
[   32.185443]  do_error_trap+0x120/0x390
[   32.189303]  ? do_trap+0x390/0x390
[   32.192814]  ? kmalloc_slab+0x5d/0x70
[   32.196586]  ? lock_release+0xd70/0xd70
[   32.200540]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   32.205361]  do_invalid_op+0x1b/0x20
[   32.209046]  invalid_op+0x18/0x20
[   32.212471] RIP: 0010:kmalloc_slab+0x5d/0x70
[   32.216850] RSP: 0018:ffff8801ce627310 EFLAGS: 00010246
[   32.222189] RAX: 0000000000000000 RBX: ffff8801ce6275a8 RCX: 0000000000000007
[   32.229431] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffffffff
[   32.236674] RBP: ffff8801ce627310 R08: ffff8801cf6661c0 R09: ffff8801ce627970
[   32.243920] R10: ffff8801cef52240 R11: 0000000000000000 R12: ffff8801ce627910
[   32.251161] R13: ffff8801ce627970 R14: 00000000014080c0 R15: ffff8801d06d07c0
[   32.258428]  __kmalloc+0x25/0x760
[   32.261857]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   32.266496]  ? ip6_setup_cork+0x1e8/0x15c0
[   32.270712]  ip6_setup_cork+0x1e8/0x15c0
[   32.274753]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   32.280012]  ip6_make_skb+0x282/0x530
[   32.283786]  ? ip_reply_glue_bits+0xb0/0xb0
[   32.288085]  ? ip6_push_pending_frames+0xe0/0xe0
[   32.292813]  ? ip6_dst_hoplimit+0x10d/0x420
[   32.297107]  ? ip6_route_output_flags+0x1f1/0x2b0
[   32.301932]  ? __lock_is_held+0xbc/0x140
[   32.305979]  ? ip6_dst_hoplimit+0xc1/0x420
[   32.310187]  ? ip6_find_1stfragopt+0x240/0x240
[   32.314753]  udpv6_sendmsg+0x2769/0x3380
[   32.318794]  ? ip_reply_glue_bits+0xb0/0xb0
[   32.323107]  ? udpv6_setsockopt+0x80/0x80
[   32.327240]  ? lock_downgrade+0x990/0x990
[   32.331362]  ? lock_downgrade+0x990/0x990
[   32.335485]  ? lock_release+0xd70/0xd70
[   32.339449]  ? __local_bh_enable_ip+0x9d/0x160
[   32.344008]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   32.348997]  ? release_sock+0x1d4/0x2a0
[   32.352951]  ? _raw_spin_unlock_bh+0x30/0x40
[   32.357332]  ? release_sock+0x1d4/0x2a0
[   32.361291]  ? udp_v6_get_port+0x9c/0xc0
[   32.365333]  inet_sendmsg+0x11f/0x5e0
[   32.369106]  ? inet_sendmsg+0x11f/0x5e0
[   32.373053]  ? __might_sleep+0x95/0x190
[   32.377001]  ? inet_recvmsg+0x5f0/0x5f0
[   32.380950]  ? selinux_socket_sendmsg+0x36/0x40
[   32.385592]  ? security_socket_sendmsg+0x89/0xb0
[   32.390319]  ? inet_recvmsg+0x5f0/0x5f0
[   32.394271]  sock_sendmsg+0xca/0x110
[   32.397961]  SYSC_sendto+0x358/0x5a0
[   32.401650]  ? SYSC_connect+0x480/0x480
[   32.405624]  ? __handle_mm_fault+0x39c0/0x39c0
[   32.410178]  ? vmacache_find+0x5f/0x280
[   32.414136]  ? up_read+0x1a/0x40
[   32.417477]  ? __do_page_fault+0x3d6/0xd60
[   32.421697]  SyS_sendto+0x40/0x50
[   32.425129]  ? SyS_getpeername+0x30/0x30
[   32.429167]  do_fast_syscall_32+0x3f2/0xf05
[   32.433468]  ? do_int80_syscall_32+0x940/0x940
[   32.438023]  ? kasan_check_read+0x11/0x20
[   32.442145]  ? syscall_return_slowpath+0x510/0x510
[   32.447047]  ? SyS_rt_sigaction+0x94/0x1b0
[   32.451255]  ? lockdep_sys_exit+0x47/0xf0
[   32.455374]  ? retint_user+0x18/0x20
[   32.459069]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   32.463890]  entry_SYSENTER_compat+0x51/0x60
[   32.468270] RIP: 0023:0xf7f3cc79
[   32.471603] RSP: 002b:00000000ffc88bbc EFLAGS: 00000286 ORIG_RAX: 0000000000000171
[   32.479289] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000002052bfcc
[   32.486535] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020e0afe4
[   32.493775] RBP: 000000000000001c R08: 0000000000000000 R09: 0000000000000000
[   32.501014] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   32.508256] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   32.515642] Dumping ftrace buffer:
[   32.519194]    (ftrace buffer empty)
[   32.522874] Kernel Offset: disabled
[   32.526480] Rebooting in 86400 seconds..