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From 527da6c2ce2c09d0183aa8595fc95f136f61b6df Mon Sep 17 00:00:00 2001
Message-Id: <527da6c2ce2c09d0183aa8595fc95f136f61b6df.1387288155.git.minovotn@redhat.com>
From: Stefan Hajnoczi <stefanha@redhat.com>
Date: Thu, 12 Dec 2013 16:21:21 +0100
Subject: [PATCH 1/8] qdev-monitor: Unref device when device_add fails
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RH-Author: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: <1386865288-1575-2-git-send-email-stefanha@redhat.com>
Patchwork-id: 56255
O-Subject: [RHEL7 qemu-kvm PATCH 1/8] qdev-monitor: Unref device when device_add fails
Bugzilla: 1003773
RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
RH-Acked-by: Jeffrey Cody <jcody@redhat.com>
RH-Acked-by: Markus Armbruster <armbru@redhat.com>

qdev_device_add() leaks the created device upon failure.  I suspect this
problem crept in because qdev_free() unparents the device but does not
drop a reference - confusing name.

Cc: qemu-stable@nongnu.org
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
(cherry picked from commit ee6abeb6ec08473713848ce9028110f1684853b7)

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 qdev-monitor.c | 2 ++
 1 file changed, 2 insertions(+)

Signed-off-by: Michal Novotny <minovotn@redhat.com>
---
 qdev-monitor.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/qdev-monitor.c b/qdev-monitor.c
index 39d030b..9d4f61d 100644
--- a/qdev-monitor.c
+++ b/qdev-monitor.c
@@ -522,6 +522,7 @@ DeviceState *qdev_device_add(QemuOpts *opts)
     }
     if (qemu_opt_foreach(opts, set_property, qdev, 1) != 0) {
         qdev_free(qdev);
+        object_unref(OBJECT(qdev));
         return NULL;
     }
     if (qdev->id) {
@@ -535,6 +536,7 @@ DeviceState *qdev_device_add(QemuOpts *opts)
         g_free(name);
     }        
     if (qdev_init(qdev) < 0) {
+        object_unref(OBJECT(qdev));
         qerror_report(QERR_DEVICE_INIT_FAILED, driver);
         return NULL;
     }
-- 
1.7.11.7