Kill paused qubes on system shutdown

fixes: QubesOS/qubes-issues#8580

qubes/tests/__init__.py

@@ -1233,6 +1233,19 @@ def shutdown_and_wait(self, vm, timeout=60):
             del vm
             self.fail("Timeout while waiting for VM {} shutdown".format(name))
 
+    def shutdown_paused(self, vm, timeout=60):
+        try:
+            self.loop.run_until_complete(vm.pause())
+            with self.assertRaises(qubes.exc.QubesVMNotRunningError):
+                self.loop.run_until_complete(
+                    vm.shutdown(wait=True, timeout=timeout, force=False))
+            self.loop.run_until_complete(
+                vm.shutdown(wait=True, timeout=timeout, force=True))
+        except qubes.exc.QubesException:
+            name = vm.name
+            del vm
+            self.fail("Timeout while waiting for VM {} shutdown".format(name))
+
     def prepare_hvm_system_linux(self, vm, init_script, extra_files=None):
         if not os.path.exists('/usr/lib/grub/i386-pc'):
             self.skipTest('grub2 not installed')

qubes/tests/integ/basic.py

@@ -353,6 +353,15 @@ def test_204_udev_block_exclude_custom_file(self):
             pool=pool))
         self.assertVolumesExcludedFromUdev(self.vm)
 
+    def test_206_shutdown_paused(self):
+        vmname = self.make_vm_name('vm')
+        self.vm = self.app.add_new_vm(qubes.vm.appvm.AppVM,
+            name=vmname, template=self.app.default_template,
+            label='red')
+        self.loop.run_until_complete(self.vm.create_on_disk())
+        self.loop.run_until_complete(self.vm.start())
+        self.shutdown_paused(self.vm)
+
 
 class TC_01_Properties(qubes.tests.SystemTestCase):
     # pylint: disable=attribute-defined-outside-init

qubes/vm/qubesvm.py

@@ -1382,10 +1382,17 @@ async def shutdown(self, force=False, wait=False, timeout=None):
             await self.fire_event_async('domain-pre-shutdown',
                                         pre_event=True, force=force)
 
+            if self.is_paused() and not force:
+                raise qubes.exc.QubesVMNotRunningError(self)
+
             if self.__waiter is None:
                 self.__waiter = asyncio.get_running_loop().create_future()
             waiter = self.__waiter
-            self.libvirt_domain.shutdown()
+
+            if self.is_paused():
+                self.libvirt_domain.destroy()
+            else:
+                self.libvirt_domain.shutdown()
 
             if wait:
                 if timeout is None: