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-386-3,10.128.0.51' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   34.322636] ------------[ cut here ]------------
[   34.327481] WARNING: CPU: 1 PID: 2990 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   34.335640] Kernel panic - not syncing: panic_on_warn set ...
[   34.335640] 
[   34.342996] CPU: 1 PID: 2990 Comm: syzkaller154015 Not tainted 4.14.0-rc4+ #40
[   34.350331] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   34.359671] Call Trace:
[   34.362249]  dump_stack+0x194/0x257
[   34.365857]  ? arch_local_irq_restore+0x53/0x53
[   34.370545]  panic+0x1e4/0x417
[   34.373734]  ? __warn+0x1d9/0x1d9
[   34.377166]  ? show_regs_print_info+0x65/0x65
[   34.381654]  ? kmalloc_slab+0x5d/0x70
[   34.385429]  __warn+0x1c4/0x1d9
[   34.388683]  ? kmalloc_slab+0x5d/0x70
[   34.392464]  report_bug+0x211/0x2d0
[   34.396074]  fixup_bug+0x40/0x90
[   34.399414]  do_trap+0x260/0x390
[   34.402761]  do_error_trap+0x120/0x390
[   34.406628]  ? do_trap+0x390/0x390
[   34.410143]  ? kmalloc_slab+0x5d/0x70
[   34.413922]  ? lock_release+0xd70/0xd70
[   34.417891]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   34.422718]  do_invalid_op+0x1b/0x20
[   34.426409]  invalid_op+0x18/0x20
[   34.429839] RIP: 0010:kmalloc_slab+0x5d/0x70
[   34.434218] RSP: 0018:ffff8801ce017310 EFLAGS: 00010246
[   34.439555] RAX: 0000000000000000 RBX: ffff8801ce0175a8 RCX: 0000000000000007
[   34.446797] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffffffff
[   34.454043] RBP: ffff8801ce017310 R08: ffff8801d14ad700 R09: ffff8801ce017970
[   34.461289] R10: ffff8801ce8b4080 R11: 0000000000000000 R12: ffff8801ce017910
[   34.468531] R13: ffff8801ce017970 R14: 00000000014080c0 R15: ffff8801d9a717c0
[   34.475809]  __kmalloc+0x25/0x760
[   34.479244]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   34.483884]  ? ip6_setup_cork+0x1e8/0x15c0
[   34.488097]  ip6_setup_cork+0x1e8/0x15c0
[   34.492140]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   34.497400]  ip6_make_skb+0x282/0x530
[   34.501178]  ? ip_reply_glue_bits+0xb0/0xb0
[   34.505481]  ? ip6_push_pending_frames+0xe0/0xe0
[   34.510219]  ? ip6_dst_hoplimit+0x10d/0x420
[   34.514528]  ? ip6_route_output_flags+0x1f1/0x2b0
[   34.519363]  ? __lock_is_held+0xbc/0x140
[   34.523414]  ? ip6_dst_hoplimit+0xc1/0x420
[   34.527626]  ? ip6_find_1stfragopt+0x240/0x240
[   34.532192]  udpv6_sendmsg+0x2769/0x3380
[   34.536241]  ? ip_reply_glue_bits+0xb0/0xb0
[   34.540551]  ? udpv6_setsockopt+0x80/0x80
[   34.544690]  ? lock_downgrade+0x990/0x990
[   34.548813]  ? lock_downgrade+0x990/0x990
[   34.552934]  ? lock_release+0xd70/0xd70
[   34.556899]  ? __local_bh_enable_ip+0x9d/0x160
[   34.561461]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   34.566453]  ? release_sock+0x1d4/0x2a0
[   34.570407]  ? _raw_spin_unlock_bh+0x30/0x40
[   34.574788]  ? release_sock+0x1d4/0x2a0
[   34.578749]  ? udp_v6_get_port+0x9c/0xc0
[   34.582795]  inet_sendmsg+0x11f/0x5e0
[   34.586569]  ? inet_sendmsg+0x11f/0x5e0
[   34.590519]  ? __might_sleep+0x95/0x190
[   34.594467]  ? inet_recvmsg+0x5f0/0x5f0
[   34.598419]  ? selinux_socket_sendmsg+0x36/0x40
[   34.603064]  ? security_socket_sendmsg+0x89/0xb0
[   34.607802]  ? inet_recvmsg+0x5f0/0x5f0
[   34.611758]  sock_sendmsg+0xca/0x110
[   34.615453]  SYSC_sendto+0x358/0x5a0
[   34.619142]  ? SYSC_connect+0x480/0x480
[   34.623132]  ? __handle_mm_fault+0x39c0/0x39c0
[   34.627691]  ? vmacache_find+0x5f/0x280
[   34.631648]  ? up_read+0x1a/0x40
[   34.634990]  ? __do_page_fault+0x3d6/0xd60
[   34.639211]  SyS_sendto+0x40/0x50
[   34.642639]  ? SyS_getpeername+0x30/0x30
[   34.646680]  do_fast_syscall_32+0x3f2/0xf05
[   34.650986]  ? do_int80_syscall_32+0x940/0x940
[   34.655544]  ? kasan_check_read+0x11/0x20
[   34.659669]  ? syscall_return_slowpath+0x510/0x510
[   34.664580]  ? SyS_rt_sigaction+0x94/0x1b0
[   34.668800]  ? lockdep_sys_exit+0x47/0xf0
[   34.672925]  ? retint_user+0x18/0x20
[   34.676617]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   34.681440]  entry_SYSENTER_compat+0x51/0x60
[   34.685822] RIP: 0023:0xf7f5cc79
[   34.689158] RSP: 002b:00000000ffd360ac EFLAGS: 00000282 ORIG_RAX: 0000000000000171
[   34.696841] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000002052bfcc
[   34.704090] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020e0afe4
[   34.711342] RBP: 000000000000001c R08: 0000000000000000 R09: 0000000000000000
[   34.718595] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   34.725840] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   34.733638] Dumping ftrace buffer:
[   34.737229]    (ftrace buffer empty)
[   34.740916] Kernel Offset: disabled
[   34.744529] Rebooting in 86400 seconds..