From ccee70dd9fc20a5b39c59b0a7dc8c72e2536ede9 Mon Sep 17 00:00:00 2001
From: Justus Winter <4winter@informatik.uni-hamburg.de>
Date: Tue, 20 Jan 2015 20:10:08 +0100
Subject: utils/rpctrace: fix notification port handling

* utils/rpctrace.c (new_receiver_info): Fix handling of old
notification port.
---
 utils/rpctrace.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'utils/rpctrace.c')

diff --git a/utils/rpctrace.c b/utils/rpctrace.c
index 62d3c876..48daa078 100644
--- a/utils/rpctrace.c
+++ b/utils/rpctrace.c
@@ -404,7 +404,8 @@ new_receiver_info (mach_port_t right, mach_port_t owner)
 					MACH_MSG_TYPE_MAKE_SEND_ONCE, &foo);
   if (err)
     error (2, err, "mach_port_request_notification");
-  mach_port_deallocate (mach_task_self (), foo);
+  if (MACH_PORT_VALID (foo))
+    mach_port_deallocate (mach_task_self (), foo);
 
   err = hurd_ihash_add (&traced_names, info->forward, info);
   if (err)
-- 
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