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-mmots-kasan-gce-0,10.128.0.43' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   40.758466] ------------[ cut here ]------------
[   40.763293] WARNING: CPU: 1 PID: 2982 at mm/slab_common.c:1001 kmalloc_slab+0x5d/0x70
[   40.771516] Kernel panic - not syncing: panic_on_warn set ...
[   40.771516] 
[   40.778858] CPU: 1 PID: 2982 Comm: syzkaller311623 Not tainted 4.14.0-rc4-mm1+ #16
[   40.786536] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   40.795864] Call Trace:
[   40.798433]  dump_stack+0x194/0x257
[   40.802034]  ? arch_local_irq_restore+0x53/0x53
[   40.806690]  panic+0x1e4/0x41c
[   40.809857]  ? refcount_error_report+0x214/0x214
[   40.814584]  ? show_regs_print_info+0x65/0x65
[   40.819067]  ? kmalloc_slab+0x5d/0x70
[   40.822839]  __warn+0x1c4/0x1e0
[   40.826089]  ? kmalloc_slab+0x5d/0x70
[   40.829863]  report_bug+0x211/0x2d0
[   40.833470]  fixup_bug+0x40/0x90
[   40.836809]  do_trap+0x260/0x390
[   40.840152]  do_error_trap+0x120/0x390
[   40.844015]  ? do_trap+0x390/0x390
[   40.847528]  ? kmalloc_slab+0x5d/0x70
[   40.851314]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   40.856133]  do_invalid_op+0x1b/0x20
[   40.859819]  invalid_op+0x18/0x20
[   40.863243] RIP: 0010:kmalloc_slab+0x5d/0x70
[   40.867619] RSP: 0018:ffff8801cf24f4b0 EFLAGS: 00010246
[   40.872956] RAX: 0000000000000000 RBX: ffff8801cf24f748 RCX: 0000000000000007
[   40.880200] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   40.887442] RBP: ffff8801cf24f4b0 R08: ffff8801c122c1c0 R09: ffff8801cf24fb10
[   40.894682] R10: ffff8801ce4c02c0 R11: 0000000000000000 R12: ffff8801cf24fab0
[   40.901922] R13: ffff8801cf24fb10 R14: 00000000014080c0 R15: ffff8801d5b3e7c0
[   40.909184]  __kmalloc+0x25/0x760
[   40.912611]  ? inet6_dump_ifaddr+0x30/0x30
[   40.916815]  ? ip6_setup_cork+0x1e8/0x15c0
[   40.921026]  ip6_setup_cork+0x1e8/0x15c0
[   40.925063]  ? __ip6_append_data.isra.43+0x3340/0x3340
[   40.930325]  ip6_make_skb+0x282/0x530
[   40.934098]  ? ip_reply_glue_bits+0xb0/0xb0
[   40.938395]  ? ip6_push_pending_frames+0xe0/0xe0
[   40.943121]  ? ip6_dst_hoplimit+0x10d/0x420
[   40.947415]  ? ip6_route_output_flags+0x1f1/0x2b0
[   40.952243]  ? __lock_is_held+0xbc/0x140
[   40.956289]  ? ip6_dst_hoplimit+0xc1/0x420
[   40.960494]  ? ip6_find_1stfragopt+0x240/0x240
[   40.965057]  udpv6_sendmsg+0x2769/0x3380
[   40.969091]  ? ip_reply_glue_bits+0xb0/0xb0
[   40.973398]  ? udpv6_setsockopt+0x80/0x80
[   40.977517]  ? find_held_lock+0x39/0x1d0
[   40.981557]  ? lock_downgrade+0x990/0x990
[   40.985674]  ? lock_downgrade+0x990/0x990
[   40.989791]  ? lock_release+0xd70/0xd70
[   40.993748]  ? do_raw_spin_trylock+0x190/0x190
[   40.998305]  ? __local_bh_enable_ip+0x9d/0x160
[   41.002860]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   41.007851]  ? release_sock+0x1d4/0x2a0
[   41.011802]  ? _raw_spin_unlock_bh+0x30/0x40
[   41.016182]  ? release_sock+0x1d4/0x2a0
[   41.020146]  ? udp_v6_get_port+0x9c/0xc0
[   41.024186]  inet_sendmsg+0x11f/0x5e0
[   41.027955]  ? inet_sendmsg+0x11f/0x5e0
[   41.031911]  ? __might_sleep+0x95/0x190
[   41.035856]  ? inet_recvmsg+0x5f0/0x5f0
[   41.039806]  ? selinux_socket_sendmsg+0x36/0x40
[   41.044449]  ? security_socket_sendmsg+0x89/0xb0
[   41.049175]  ? inet_recvmsg+0x5f0/0x5f0
[   41.053124]  sock_sendmsg+0xca/0x110
[   41.056812]  SYSC_sendto+0x358/0x5a0
[   41.060503]  ? SYSC_connect+0x480/0x480
[   41.064462]  ? mm_fault_error+0x2c0/0x2c0
[   41.068585]  ? ipv6_setsockopt+0xa8/0x150
[   41.072714]  ? __do_page_fault+0xd60/0xd60
[   41.076934]  ? lockdep_sys_exit+0x47/0xf0
[   41.081053]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   41.085868]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   41.090857]  SyS_sendto+0x40/0x50
[   41.094284]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   41.099009] RIP: 0033:0x43fea9
[   41.102168] RSP: 002b:00007ffc0e999648 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   41.109849] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   41.117091] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   41.124331] RBP: 0000000000000082 R08: 0000000020e0afe4 R09: 000000000000001c
[   41.131571] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   41.138810] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   41.146234] Dumping ftrace buffer:
[   41.149808]    (ftrace buffer empty)
[   41.153492] Kernel Offset: disabled
[   41.157101] Rebooting in 86400 seconds..