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-386-4,10.128.0.34' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   51.289861] ------------[ cut here ]------------
[   51.294680] WARNING: CPU: 1 PID: 2987 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   51.302756] Kernel panic - not syncing: panic_on_warn set ...
[   51.302756] 
[   51.310097] CPU: 1 PID: 2987 Comm: syzkaller489595 Not tainted 4.14.0-rc4+ #41
[   51.317425] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   51.326751] Call Trace:
[   51.329321]  dump_stack+0x194/0x257
[   51.332928]  ? arch_local_irq_restore+0x53/0x53
[   51.337599]  panic+0x1e4/0x417
[   51.340787]  ? __warn+0x1d9/0x1d9
[   51.344220]  ? show_regs_print_info+0x65/0x65
[   51.348706]  ? kmalloc_slab+0x5d/0x70
[   51.352479]  __warn+0x1c4/0x1d9
[   51.355742]  ? kmalloc_slab+0x5d/0x70
[   51.359540]  report_bug+0x211/0x2d0
[   51.363153]  fixup_bug+0x40/0x90
[   51.366493]  do_trap+0x260/0x390
[   51.369847]  do_error_trap+0x120/0x390
[   51.373716]  ? do_trap+0x390/0x390
[   51.377240]  ? kmalloc_slab+0x5d/0x70
[   51.381021]  ? lock_release+0xd70/0xd70
[   51.384976]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   51.389801]  do_invalid_op+0x1b/0x20
[   51.393490]  invalid_op+0x18/0x20
[   51.396927] RIP: 0010:kmalloc_slab+0x5d/0x70
[   51.401304] RSP: 0018:ffff8801ce84f310 EFLAGS: 00010246
[   51.406641] RAX: 0000000000000000 RBX: ffff8801ce84f5a8 RCX: 0000000000000007
[   51.413887] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffffffff
[   51.421132] RBP: ffff8801ce84f310 R08: ffff8801cce1a700 R09: ffff8801ce84f970
[   51.428375] R10: ffff8801ce6cc380 R11: 0000000000000000 R12: ffff8801ce84f910
[   51.435621] R13: ffff8801ce84f970 R14: 00000000014080c0 R15: ffff8801cf2037c0
[   51.442897]  __kmalloc+0x25/0x760
[   51.446332]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   51.450975]  ? ip6_setup_cork+0x1e8/0x15c0
[   51.455193]  ip6_setup_cork+0x1e8/0x15c0
[   51.459234]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   51.464496]  ip6_make_skb+0x282/0x530
[   51.468274]  ? ip_reply_glue_bits+0xb0/0xb0
[   51.472574]  ? ip6_push_pending_frames+0xe0/0xe0
[   51.477304]  ? ip6_dst_hoplimit+0x10d/0x420
[   51.481601]  ? ip6_route_output_flags+0x1f1/0x2b0
[   51.486428]  ? __lock_is_held+0xbc/0x140
[   51.490479]  ? ip6_dst_hoplimit+0xc1/0x420
[   51.494693]  ? ip6_find_1stfragopt+0x240/0x240
[   51.499256]  udpv6_sendmsg+0x2769/0x3380
[   51.503318]  ? ip_reply_glue_bits+0xb0/0xb0
[   51.507640]  ? udpv6_setsockopt+0x80/0x80
[   51.511781]  ? lock_downgrade+0x990/0x990
[   51.515905]  ? lock_downgrade+0x990/0x990
[   51.520027]  ? lock_release+0xd70/0xd70
[   51.523997]  ? __local_bh_enable_ip+0x9d/0x160
[   51.528555]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   51.533544]  ? release_sock+0x1d4/0x2a0
[   51.537499]  ? _raw_spin_unlock_bh+0x30/0x40
[   51.541879]  ? release_sock+0x1d4/0x2a0
[   51.545837]  ? udp_v6_get_port+0x9c/0xc0
[   51.549881]  inet_sendmsg+0x11f/0x5e0
[   51.553656]  ? inet_sendmsg+0x11f/0x5e0
[   51.557606]  ? __might_sleep+0x95/0x190
[   51.561555]  ? inet_recvmsg+0x5f0/0x5f0
[   51.565506]  ? selinux_socket_sendmsg+0x36/0x40
[   51.570147]  ? security_socket_sendmsg+0x89/0xb0
[   51.574877]  ? inet_recvmsg+0x5f0/0x5f0
[   51.578837]  sock_sendmsg+0xca/0x110
[   51.582529]  SYSC_sendto+0x358/0x5a0
[   51.586219]  ? SYSC_connect+0x480/0x480
[   51.590198]  ? __handle_mm_fault+0x39c0/0x39c0
[   51.594757]  ? vmacache_find+0x5f/0x280
[   51.598719]  ? up_read+0x1a/0x40
[   51.602069]  ? __do_page_fault+0x3d6/0xd60
[   51.606302]  SyS_sendto+0x40/0x50
[   51.609731]  ? SyS_getpeername+0x30/0x30
[   51.613769]  do_fast_syscall_32+0x3f2/0xf05
[   51.618071]  ? do_int80_syscall_32+0x940/0x940
[   51.622629]  ? kasan_check_read+0x11/0x20
[   51.626754]  ? syscall_return_slowpath+0x510/0x510
[   51.631658]  ? SyS_rt_sigaction+0x94/0x1b0
[   51.635868]  ? lockdep_sys_exit+0x47/0xf0
[   51.639991]  ? retint_user+0x18/0x20
[   51.643684]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   51.648507]  entry_SYSENTER_compat+0x51/0x60
[   51.652889] RIP: 0023:0xf7f69c79
[   51.656223] RSP: 002b:00000000ffaae24c EFLAGS: 00000282 ORIG_RAX: 0000000000000171
[   51.663908] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000002052bfcc
[   51.671152] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020e0afe4
[   51.678397] RBP: 000000000000001c R08: 0000000000000000 R09: 0000000000000000
[   51.685641] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   51.692885] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   51.700330] Dumping ftrace buffer:
[   51.703889]    (ftrace buffer empty)
[   51.707576] Kernel Offset: disabled
[   51.711186] Rebooting in 86400 seconds..