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-next-kasan-gce-1,10.128.15.215' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   33.513196] ------------[ cut here ]------------
[   33.518030] WARNING: CPU: 0 PID: 2982 at mm/slab_common.c:1001 kmalloc_slab+0x5d/0x70
[   33.526194] Kernel panic - not syncing: panic_on_warn set ...
[   33.526194] 
[   33.533553] CPU: 0 PID: 2982 Comm: syzkaller940609 Not tainted 4.14.0-rc4-next-20171009+ #33
[   33.542109] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.551439] Call Trace:
[   33.554002]  dump_stack+0x194/0x257
[   33.557604]  ? arch_local_irq_restore+0x53/0x53
[   33.562255]  panic+0x1e4/0x41c
[   33.565423]  ? refcount_error_report+0x214/0x214
[   33.570149]  ? show_regs_print_info+0x65/0x65
[   33.574632]  ? kmalloc_slab+0x5d/0x70
[   33.578403]  __warn+0x1c4/0x1e0
[   33.581653]  ? kmalloc_slab+0x5d/0x70
[   33.585426]  report_bug+0x211/0x2d0
[   33.589030]  fixup_bug+0x40/0x90
[   33.592366]  do_trap+0x260/0x390
[   33.595710]  do_error_trap+0x120/0x390
[   33.599572]  ? do_trap+0x390/0x390
[   33.603091]  ? kmalloc_slab+0x5d/0x70
[   33.606872]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.611691]  do_invalid_op+0x1b/0x20
[   33.615376]  invalid_op+0x18/0x20
[   33.618801] RIP: 0010:kmalloc_slab+0x5d/0x70
[   33.623177] RSP: 0018:ffff8801cea2f4b0 EFLAGS: 00010246
[   33.628511] RAX: 0000000000000000 RBX: ffff8801cea2f748 RCX: 0000000000000007
[   33.635751] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   33.642990] RBP: ffff8801cea2f4b0 R08: ffff8801d9be2c40 R09: ffff8801cea2fb10
[   33.650227] R10: ffff8801cea260c0 R11: 0000000000000000 R12: ffff8801cea2fab0
[   33.657472] R13: ffff8801cea2fb10 R14: 00000000014080c0 R15: ffff8801cf6507c0
[   33.664736]  __kmalloc+0x25/0x760
[   33.668165]  ? inet6_dump_ifaddr+0x30/0x30
[   33.672372]  ? ip6_setup_cork+0x1e8/0x15c0
[   33.676580]  ip6_setup_cork+0x1e8/0x15c0
[   33.680624]  ? __ip6_append_data.isra.43+0x3340/0x3340
[   33.685883]  ip6_make_skb+0x282/0x530
[   33.689658]  ? ip_reply_glue_bits+0xb0/0xb0
[   33.693957]  ? ip6_push_pending_frames+0xe0/0xe0
[   33.698685]  ? ip6_dst_hoplimit+0x10d/0x420
[   33.702982]  ? ip6_route_output_flags+0x1f1/0x2b0
[   33.707810]  ? __lock_is_held+0xbc/0x140
[   33.711856]  ? ip6_dst_hoplimit+0xc1/0x420
[   33.716066]  ? ip6_find_1stfragopt+0x240/0x240
[   33.720629]  udpv6_sendmsg+0x2769/0x3380
[   33.724671]  ? ip_reply_glue_bits+0xb0/0xb0
[   33.728981]  ? udpv6_setsockopt+0x80/0x80
[   33.733103]  ? find_held_lock+0x39/0x1d0
[   33.737149]  ? lock_downgrade+0x990/0x990
[   33.741279]  ? lock_downgrade+0x990/0x990
[   33.745399]  ? lock_release+0xd70/0xd70
[   33.749354]  ? do_raw_spin_trylock+0x190/0x190
[   33.753914]  ? __local_bh_enable_ip+0x9d/0x160
[   33.758468]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   33.763457]  ? release_sock+0x1d4/0x2a0
[   33.767408]  ? _raw_spin_unlock_bh+0x30/0x40
[   33.771794]  ? release_sock+0x1d4/0x2a0
[   33.775751]  ? udp_v6_get_port+0x9c/0xc0
[   33.779790]  inet_sendmsg+0x11f/0x5e0
[   33.783559]  ? inet_sendmsg+0x11f/0x5e0
[   33.787505]  ? __might_sleep+0x95/0x190
[   33.791459]  ? inet_recvmsg+0x5f0/0x5f0
[   33.795407]  ? selinux_socket_sendmsg+0x36/0x40
[   33.800047]  ? security_socket_sendmsg+0x89/0xb0
[   33.804772]  ? inet_recvmsg+0x5f0/0x5f0
[   33.808719]  sock_sendmsg+0xca/0x110
[   33.812404]  SYSC_sendto+0x358/0x5a0
[   33.816093]  ? SYSC_connect+0x480/0x480
[   33.820049]  ? mm_fault_error+0x2c0/0x2c0
[   33.824170]  ? ipv6_setsockopt+0xa8/0x150
[   33.828297]  ? __do_page_fault+0xd60/0xd60
[   33.832514]  ? lockdep_sys_exit+0x47/0xf0
[   33.836632]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   33.841445]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   33.846433]  SyS_sendto+0x40/0x50
[   33.849861]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   33.854585] RIP: 0033:0x43fea9
[   33.857746] RSP: 002b:00007ffd5cb39f28 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   33.865424] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   33.872665] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   33.879902] RBP: 0000000000000082 R08: 0000000020e0afe4 R09: 000000000000001c
[   33.887141] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   33.894392] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   33.901788] Dumping ftrace buffer:
[   33.905341]    (ftrace buffer empty)
[   33.909020] Kernel Offset: disabled
[   33.912626] Rebooting in 86400 seconds..