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-386-2,10.128.15.224' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   40.765315] ------------[ cut here ]------------
[   40.766310] WARNING: CPU: 1 PID: 2987 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   40.767724] Kernel panic - not syncing: panic_on_warn set ...
[   40.767724] 
[   40.768722] CPU: 1 PID: 2987 Comm: syzkaller917572 Not tainted 4.14.0-rc5+ #51
[   40.769704] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   40.770945] Call Trace:
[   40.771304]  dump_stack+0x194/0x257
[   40.771799]  ? arch_local_irq_restore+0x53/0x53
[   40.772436]  panic+0x1e4/0x417
[   40.772869]  ? __warn+0x1d9/0x1d9
[   40.773335]  ? show_regs_print_info+0x65/0x65
[   40.774136]  ? kmalloc_slab+0x5d/0x70
[   40.774646]  __warn+0x1c4/0x1d9
[   40.775089]  ? kmalloc_slab+0x5d/0x70
[   40.775600]  report_bug+0x211/0x2d0
[   40.776094]  fixup_bug+0x40/0x90
[   40.776551]  do_trap+0x260/0x390
[   40.777047]  do_error_trap+0x120/0x390
[   40.777573]  ? do_trap+0x390/0x390
[   40.778085]  ? kmalloc_slab+0x5d/0x70
[   40.778600]  ? ipv6_dev_get_saddr+0x418/0xa20
[   40.779224]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   40.779875]  do_invalid_op+0x1b/0x20
[   40.780373]  invalid_op+0x18/0x20
[   40.780887] RIP: 0010:kmalloc_slab+0x5d/0x70
[   40.781472] RSP: 0018:ffff8801c085f310 EFLAGS: 00010246
[   40.782195] RAX: 0000000000000000 RBX: ffff8801c085f5a8 RCX: 0000000000000007
[   40.783147] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffffffff
[   40.784110] RBP: ffff8801c085f310 R08: ffff8801c14ba1c0 R09: ffff8801c085f970
[   40.785061] R10: ffff8801c085f4d8 R11: 0000000000000000 R12: ffff8801c085f910
[   40.789897] R13: ffff8801c085f970 R14: 00000000014080c0 R15: ffff8801d2751880
[   40.797155]  __kmalloc+0x25/0x760
[   40.800579]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   40.805217]  ? ip6_setup_cork+0x1e8/0x15c0
[   40.809421]  ip6_setup_cork+0x1e8/0x15c0
[   40.813459]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   40.818704]  ? ip6_pol_route_output+0x4c/0x60
[   40.823166]  ? ip6_pol_route_input+0x70/0x70
[   40.827549]  ip6_make_skb+0x282/0x530
[   40.831321]  ? ip_reply_glue_bits+0xb0/0xb0
[   40.836164]  ? ip6_push_pending_frames+0xe0/0xe0
[   40.840887]  ? ip6_dst_hoplimit+0x26c/0x420
[   40.845178]  ? lock_downgrade+0x990/0x990
[   40.849303]  ? __lock_is_held+0xb6/0x140
[   40.853344]  ? ip6_dst_hoplimit+0xc1/0x420
[   40.857544]  ? ip6_find_1stfragopt+0x240/0x240
[   40.862101]  udpv6_sendmsg+0x2769/0x3380
[   40.866141]  ? ip_reply_glue_bits+0xb0/0xb0
[   40.870442]  ? udpv6_setsockopt+0x80/0x80
[   40.874560]  ? reacquire_held_locks+0x1fd/0x3d0
[   40.879200]  ? find_held_lock+0x35/0x1d0
[   40.883235]  ? release_sock+0x1d4/0x2a0
[   40.887176]  ? lock_downgrade+0x990/0x990
[   40.891292]  ? lock_downgrade+0x990/0x990
[   40.895416]  ? __local_bh_enable_ip+0x9d/0x160
[   40.899969]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   40.904950]  ? release_sock+0x1d4/0x2a0
[   40.908897]  ? _raw_spin_unlock_bh+0x30/0x40
[   40.913270]  ? release_sock+0x1d4/0x2a0
[   40.917221]  ? udp_v6_get_port+0x9c/0xc0
[   40.921253]  inet_sendmsg+0x11f/0x5e0
[   40.925020]  ? inet_sendmsg+0x11f/0x5e0
[   40.928962]  ? __might_sleep+0x95/0x190
[   40.932905]  ? inet_recvmsg+0x5f0/0x5f0
[   40.936851]  ? selinux_socket_sendmsg+0x36/0x40
[   40.941488]  ? security_socket_sendmsg+0x89/0xb0
[   40.946209]  ? inet_recvmsg+0x5f0/0x5f0
[   40.950153]  sock_sendmsg+0xca/0x110
[   40.953836]  SYSC_sendto+0x352/0x5a0
[   40.957520]  ? SYSC_connect+0x470/0x470
[   40.961471]  ? __do_page_fault+0x64c/0xd60
[   40.965689]  ? __handle_mm_fault+0x39c0/0x39c0
[   40.970237]  ? vmacache_find+0x5f/0x280
[   40.974188]  ? up_read+0x1a/0x40
[   40.977524]  ? __do_page_fault+0x3d6/0xd60
[   40.981736]  SyS_sendto+0x40/0x50
[   40.985159]  ? SyS_getpeername+0x30/0x30
[   40.989188]  do_fast_syscall_32+0x3f2/0xf05
[   40.993482]  ? do_int80_syscall_32+0x940/0x940
[   40.998032]  ? kasan_check_read+0x11/0x20
[   41.002147]  ? syscall_return_slowpath+0x510/0x510
[   41.007045]  ? SyS_rt_sigaction+0x94/0x1b0
[   41.011247]  ? SyS_sigprocmask+0x4b0/0x4b0
[   41.015446]  ? SyS_read+0x184/0x220
[   41.019049]  ? retint_user+0x18/0x20
[   41.022738]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   41.027554]  entry_SYSENTER_compat+0x51/0x60
[   41.031930] RIP: 0023:0xf7fdbc79
[   41.035258] RSP: 002b:00000000ffdf299c EFLAGS: 00000282 ORIG_RAX: 0000000000000171
[   41.042932] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000002052bfcc
[   41.050167] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020e0afe4
[   41.057403] RBP: 000000000000001c R08: 0000000000000000 R09: 0000000000000000
[   41.064637] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   41.071872] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   41.079250] Dumping ftrace buffer:
[   41.082788]    (ftrace buffer empty)
[   41.086464] Kernel Offset: disabled
[   41.090062] Rebooting in 86400 seconds..