From: Gonglei <arei.gong...@huawei.com>
object_initialize() leaves the object with a refcount of 1.
object_property_add_child() adds its own reference which is dropped
again when the property is deleted.
The upshot of this is that we always have a refcount >= 1. Upon hot
unplug the virtio-serial child is not finalized!
Drop our reference after the child property has been added to the
parent.
Signed-off-by: Gonglei <arei.gong...@huawei.com>
Reviewed-by: Cornelia Huck <cornelia.h...@de.ibm.com>
Cc: qemu-sta...@nongnu.org
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
(cherry picked from commit e77ca8b92af8a5213897331d676089e8919f383d)
Signed-off-by: Michael Roth <mdr...@linux.vnet.ibm.com>
---
hw/s390x/s390-virtio-bus.c | 1 +
hw/s390x/virtio-ccw.c | 1 +
hw/virtio/virtio-pci.c | 1 +
3 files changed, 3 insertions(+)
diff --git a/hw/s390x/s390-virtio-bus.c b/hw/s390x/s390-virtio-bus.c
index 31f5286..422402e 100644
--- a/hw/s390x/s390-virtio-bus.c
+++ b/hw/s390x/s390-virtio-bus.c
@@ -227,6 +227,7 @@ static void s390_virtio_serial_instance_init(Object *obj)
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SERIAL);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
qdev_alias_all_properties(DEVICE(&dev->vdev), obj);
+ object_unref(OBJECT(&dev->vdev));
}
static int s390_virtio_scsi_init(VirtIOS390Device *s390_dev)
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index 271104d..5d7f3a6 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -853,6 +853,7 @@ static void virtio_ccw_serial_instance_init(Object *obj)
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SERIAL);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
qdev_alias_all_properties(DEVICE(&dev->vdev), obj);
+ object_unref(OBJECT(&dev->vdev));
}
static int virtio_ccw_balloon_init(VirtioCcwDevice *ccw_dev)
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index db085d5..4d830aa 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1412,6 +1412,7 @@ static void virtio_serial_pci_instance_init(Object *obj)
object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SERIAL);
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
qdev_alias_all_properties(DEVICE(&dev->vdev), obj);
+ object_unref(OBJECT(&dev->vdev));
}
static const TypeInfo virtio_serial_pci_info = {
--
1.9.1
