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 '10.128.0.25' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   25.535751] kasan: CONFIG_KASAN_INLINE enabled
[   25.540463] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   25.548109] general protection fault: 0000 [#1] SMP KASAN
[   25.553647] Dumping ftrace buffer:
[   25.557166]    (ftrace buffer empty)
[   25.560859] Modules linked in:
[   25.564039] CPU: 0 PID: 4423 Comm: syzkaller242972 Not tainted 4.16.0+ #19
[   25.571031] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   25.580381] RIP: 0010:kernel_sock_shutdown+0x29/0x80
[   25.585464] RSP: 0018:ffff8801bb687cb0 EFLAGS: 00010206
[   25.590810] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff10036e86d55
[   25.598071] RDX: 0000000000000005 RSI: ffffffff85b55864 RDI: 0000000000000028
[   25.605322] RBP: ffff8801bb687cc8 R08: 1ffff100376d0f54 R09: ffffed003b6046c2
[   25.612594] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000000
[   25.619845] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   25.627097] FS:  0000000000d9f880(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000
[   25.635304] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.641165] CR2: 00007fff6bed5038 CR3: 00000001b8975000 CR4: 00000000001406f0
[   25.648419] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.655668] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.662916] Call Trace:
[   25.665490]  smc_shutdown+0x320/0x600
[   25.669276]  __sys_shutdown+0x154/0x2b0
[   25.673232]  ? SyS_getsockopt+0x50/0x50
[   25.677192]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   25.682713]  ? exit_to_usermode_loop+0x1ef/0x310
[   25.687451]  ? syscall_slow_exit_work+0x4f0/0x4f0
[   25.692273]  ? do_syscall_64+0xb7/0x9d0
[   25.696229]  SyS_shutdown+0x1c/0x30
[   25.699836]  ? __sys_shutdown+0x2b0/0x2b0
[   25.703991]  do_syscall_64+0x29e/0x9d0
[   25.707871]  ? vmalloc_sync_all+0x30/0x30
[   25.711999]  ? syscall_slow_exit_work+0x4f0/0x4f0
[   25.716828]  ? syscall_return_slowpath+0x5c0/0x5c0
[   25.721742]  ? syscall_return_slowpath+0x30f/0x5c0
[   25.726660]  ? entry_SYSCALL_64_after_hwframe+0x52/0xb7
[   25.732022]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   25.736854]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   25.742028] RIP: 0033:0x43fcb9
[   25.745201] RSP: 002b:00007fff6be99688 EFLAGS: 00000217 ORIG_RAX: 0000000000000030
[   25.752889] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9
[   25.760140] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003
[   25.767391] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
[   25.774640] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0
[   25.781889] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000
[   25.789144] Code: 00 00 55 48 89 e5 41 55 41 89 f5 41 54 53 48 89 fb e8 cc e4 c1 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 
[   25.808289] RIP: kernel_sock_shutdown+0x29/0x80 RSP: ffff8801bb687cb0
[   25.814938] ---[ end trace 610d7fc8783f2ea3 ]---
[   25.819716] Kernel panic - not syncing: Fatal exception
[   25.825536] Dumping ftrace buffer:
[   25.829060]    (ftrace buffer empty)
[   25.832751] Kernel Offset: disabled
[   25.836377] Rebooting in 86400 seconds..