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 '10.128.0.5' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   31.444444] kasan: CONFIG_KASAN_INLINE enabled
[   31.449120] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   31.456600] general protection fault: 0000 [#1] SMP KASAN
[   31.462140] Dumping ftrace buffer:
[   31.465657]    (ftrace buffer empty)
[   31.469365] Modules linked in:
[   31.472540] CPU: 1 PID: 4480 Comm: syzkaller489871 Not tainted 4.16.0+ #16
[   31.479527] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   31.489299] RIP: 0010:kernel_sock_shutdown+0x29/0x80
[   31.494373] RSP: 0018:ffff8801ad257cb0 EFLAGS: 00010206
[   31.499711] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff10035a45ded
[   31.506957] RDX: 0000000000000005 RSI: ffffffff85b49864 RDI: 0000000000000028
[   31.514205] RBP: ffff8801ad257cc8 R08: 1ffff10035a4af54 R09: ffffed003b6246c2
[   31.521451] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000000
[   31.528696] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   31.535943] FS:  000000000267f880(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000
[   31.544143] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   31.550000] CR2: 00007ffd6d5ce038 CR3: 00000001d9aaf000 CR4: 00000000001406e0
[   31.557254] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   31.564501] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   31.571744] Call Trace:
[   31.574312]  smc_shutdown+0x320/0x600
[   31.578094]  __sys_shutdown+0x154/0x2b0
[   31.582064]  ? SyS_getsockopt+0x50/0x50
[   31.586040]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   31.591559]  ? exit_to_usermode_loop+0x1ef/0x310
[   31.596293]  ? syscall_slow_exit_work+0x4f0/0x4f0
[   31.601116]  ? do_syscall_64+0xb7/0x9d0
[   31.605070]  SyS_shutdown+0x1c/0x30
[   31.608675]  ? __sys_shutdown+0x2b0/0x2b0
[   31.612798]  do_syscall_64+0x29e/0x9d0
[   31.616662]  ? vmalloc_sync_all+0x30/0x30
[   31.620788]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   31.625521]  ? syscall_return_slowpath+0x5c0/0x5c0
[   31.630427]  ? syscall_return_slowpath+0x30f/0x5c0
[   31.635337]  ? entry_SYSCALL_64_after_hwframe+0x52/0xb7
[   31.640679]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   31.645501]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   31.650666] RIP: 0033:0x43fcb9
[   31.653831] RSP: 002b:00007ffd6d53f498 EFLAGS: 00000217 ORIG_RAX: 0000000000000030
[   31.661513] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9
[   31.668756] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003
[   31.676003] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
[   31.683256] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0
[   31.690503] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000
[   31.697756] Code: 00 00 55 48 89 e5 41 55 41 89 f5 41 54 53 48 89 fb e8 ec 74 c2 fb 48 8d 7b 28 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 37 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 28 49 
[   31.716896] RIP: kernel_sock_shutdown+0x29/0x80 RSP: ffff8801ad257cb0
[   31.723501] ---[ end trace da6b5e63ff7ecf82 ]---
[   31.728256] Kernel panic - not syncing: Fatal exception
[   31.734059] Dumping ftrace buffer:
[   31.737576]    (ftrace buffer empty)
[   31.741259] Kernel Offset: disabled
[   31.744860] Rebooting in 86400 seconds..