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 '10.128.10.4' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   31.575271] kasan: CONFIG_KASAN_INLINE enabled
[   31.579950] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   31.587486] general protection fault: 0000 [#1] SMP KASAN
[   31.593006] Dumping ftrace buffer:
[   31.596514]    (ftrace buffer empty)
[   31.600195] Modules linked in:
[   31.603363] CPU: 1 PID: 4382 Comm: syzkaller732557 Not tainted 4.16.0+ #288
[   31.610437] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   31.619779] RIP: 0010:kernel_sock_shutdown+0x29/0x70
[   31.624855] RSP: 0018:ffff8801b8087c60 EFLAGS: 00010206
[   31.630190] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff856c26f4
[   31.637430] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028
[   31.644672] RBP: ffff8801b8087c78 R08: 0000000000000000 R09: 1ffff10037010f4b
[   31.651914] R10: 0000000000000001 R11: 0000000000000001 R12: ffff8801b00b57d2
[   31.659167] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   31.666414] FS:  0000000000000000(0000) GS:ffff8801db100000(0063) knlGS:0000000009180840
[   31.674701] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   31.680555] CR2: 00000000080d575c CR3: 00000001b84fe000 CR4: 00000000001406e0
[   31.687802] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   31.695048] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   31.702291] Call Trace:
[   31.704855]  smc_shutdown+0x3ed/0x540
[   31.708635]  __sys_shutdown+0x136/0x280
[   31.712582]  ? SyS_getsockopt+0x50/0x50
[   31.716532]  ? trace_hardirqs_off+0xd/0x10
[   31.720739]  ? exit_to_usermode_loop+0x198/0x2f0
[   31.725470]  ? move_addr_to_kernel+0x60/0x60
[   31.729865]  ? trace_event_raw_event_sys_exit+0x260/0x260
[   31.735370]  ? do_fast_syscall_32+0x156/0xf9f
[   31.739844]  ? __sys_shutdown+0x280/0x280
[   31.743972]  SyS_shutdown+0x1c/0x30
[   31.747583]  do_fast_syscall_32+0x3ec/0xf9f
[   31.751885]  ? do_int80_syscall_32+0x9c0/0x9c0
[   31.756441]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   31.761192]  ? syscall_return_slowpath+0x550/0x550
[   31.766103]  ? syscall_return_slowpath+0x2ac/0x550
[   31.771004]  ? prepare_exit_to_usermode+0x350/0x350
[   31.775999]  ? sysret32_from_system_call+0x5/0x3c
[   31.780816]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   31.785628]  entry_SYSENTER_compat+0x70/0x7f
[   31.790006] RIP: 0023:0xf7f0fc99
[   31.793345] RSP: 002b:00000000ffa44cfc EFLAGS: 00000217 ORIG_RAX: 0000000000000175
[   31.801043] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000
[   31.808287] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003
[   31.815529] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   31.822770] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   31.830010] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   31.837262] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 bc 4e 05 fc 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 32 4c 8b 63 28 48 b8 00 00 00 00 00 fc ff df 49 
[   31.856442] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b8087c60
[   31.863056] ---[ end trace 26c10dc49b78bc90 ]---
[   31.867810] Kernel panic - not syncing: Fatal exception
[   31.873509] Dumping ftrace buffer:
[   31.877022]    (ftrace buffer empty)
[   31.880710] Kernel Offset: disabled
[   31.884314] Rebooting in 86400 seconds..