From 27a0fe25ab250f65a84c13abbb0289547c858c13 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Tue, 19 Feb 2019 00:55:13 +0100
Subject: [PATCH] app: allow removing VM referencing only itself

Fixes QubesOS/qubes-issues#4224
---
 qubes/app.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/qubes/app.py b/qubes/app.py
index 51432b1c..e51ef133 100644
--- a/qubes/app.py
+++ b/qubes/app.py
@@ -1366,6 +1366,9 @@ class Qubes(qubes.PropertyHolder):
     def on_domain_pre_deleted(self, event, vm):
         # pylint: disable=unused-argument
         for obj in itertools.chain(self.domains, (self,)):
+            if obj is vm:
+                # allow removed VM to reference itself
+                continue
             for prop in obj.property_list():
                 try:
                     if isinstance(prop, qubes.vm.VMProperty) and \