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[Qemu-devel] [PCTCH v4] qdev: set properties after device's parent is as
From: |
Amos Kong |
Subject: |
[Qemu-devel] [PCTCH v4] qdev: set properties after device's parent is assigned |
Date: |
Mon, 3 Mar 2014 23:55:24 +0800 |
Test steps:
(qemu) device_add e1000,addr=adsf
Property 'e1000.addr' doesn't take value 'adsf'
(qemu) info qtree
Then qemu crashed.
Currently we set a link to the new device for qdev parent bus, but the
device hasn't been added to QOM tree. When it fails to set properties,
object_unparent() can't cleanup the device.
Delay device property setting until device's parent is assigned. This
way when property setting fails, object_unparent() can cleanup failed
device properly.
Signed-off-by: Amos Kong <address@hidden>
Reviewed-By: Igor Mammedov <address@hidden>
---
V2: fix bz by adjust the initialization order (Paolo)
V3: fix bug without making it differs with legacy devices
creation (Andreas)
V4: update subject and commitlog
---
qdev-monitor.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/qdev-monitor.c b/qdev-monitor.c
index 6673e3c..9268c87 100644
--- a/qdev-monitor.c
+++ b/qdev-monitor.c
@@ -522,7 +522,7 @@ DeviceState *qdev_device_add(QemuOpts *opts)
return NULL;
}
- /* create device, set properties */
+ /* create device */
dev = DEVICE(object_new(driver));
if (bus) {
@@ -533,11 +533,7 @@ DeviceState *qdev_device_add(QemuOpts *opts)
if (id) {
dev->id = id;
}
- if (qemu_opt_foreach(opts, set_property, dev, 1) != 0) {
- object_unparent(OBJECT(dev));
- object_unref(OBJECT(dev));
- return NULL;
- }
+
if (dev->id) {
object_property_add_child(qdev_get_peripheral(), dev->id,
OBJECT(dev), NULL);
@@ -549,6 +545,13 @@ DeviceState *qdev_device_add(QemuOpts *opts)
g_free(name);
}
+ /* set properties */
+ if (qemu_opt_foreach(opts, set_property, dev, 1) != 0) {
+ object_unparent(OBJECT(dev));
+ object_unref(OBJECT(dev));
+ return NULL;
+ }
+
dev->opts = opts;
object_property_set_bool(OBJECT(dev), true, "realized", &err);
if (err != NULL) {
--
1.8.5.3
- [Qemu-devel] [PCTCH v4] qdev: set properties after device's parent is assigned,
Amos Kong <=