From e0a2553be4f37b5b408d0cfe3730fb7596593473 Mon Sep 17 00:00:00 2001
From: Julien Duponchelle <julien@gns3.net>
Date: Mon, 4 Jul 2016 14:46:06 +0200
Subject: [PATCH] Fix a rare crash in IOU

Fix #604
---
 gns3server/modules/iou/iou_vm.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gns3server/modules/iou/iou_vm.py b/gns3server/modules/iou/iou_vm.py
index 8bbd8bb8..b6dd548f 100644
--- a/gns3server/modules/iou/iou_vm.py
+++ b/gns3server/modules/iou/iou_vm.py
@@ -663,7 +663,10 @@ class IOUVM(BaseVM):
                 except asyncio.TimeoutError:
                     if self._iou_process.returncode is None:
                         log.warn("IOU process {} is still running... killing it".format(self._iou_process.pid))
-                        self._iou_process.kill()
+                        try:
+                            self._iou_process.kill()
+                        except ProcessLookupError:
+                            pass
             self._iou_process = None
 
         if self.is_iouyap_running():