diff options
| author | Gonglei <arei.gonglei@huawei.com> | 2014-09-30 14:10:34 +0800 |
|---|---|---|
| committer | Michael Roth <mdroth@linux.vnet.ibm.com> | 2015-01-06 16:02:58 -0600 |
| commit | 0077793a00a7ff4e44d6bdfe3469b61ba14962ec (patch) | |
| tree | 6b657e24fb408ec71d679e5f76cec107d044fa77 /hw | |
| parent | c4164eae39d65b6735724a181b027754970e08ea (diff) | |
| download | qemu-0077793a00a7ff4e44d6bdfe3469b61ba14962ec.tar.gz | |
virtio-rng: fix virtio-rng child refcount in transports
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-rng child is not finalized!
Drop our reference after the child property has been added to the
parent.
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 352fa88dfb2e9c72fa2a1506acb39f349d4befbf)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/s390x/s390-virtio-bus.c | 1 | ||||
| -rw-r--r-- | hw/s390x/virtio-ccw.c | 1 | ||||
| -rw-r--r-- | hw/virtio/virtio-pci.c | 1 |
3 files changed, 3 insertions, 0 deletions
diff --git a/hw/s390x/s390-virtio-bus.c b/hw/s390x/s390-virtio-bus.c index 6d0a7f36e7..ca682bb7e6 100644 --- a/hw/s390x/s390-virtio-bus.c +++ b/hw/s390x/s390-virtio-bus.c @@ -312,6 +312,7 @@ static void s390_virtio_rng_instance_init(Object *obj) object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_RNG); object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); qdev_alias_all_properties(DEVICE(&dev->vdev), obj); + object_unref(OBJECT(&dev->vdev)); object_property_add_link(obj, "rng", TYPE_RNG_BACKEND, (Object **)&dev->vdev.conf.rng, qdev_prop_allow_set_link_before_realize, diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c index da2e427716..de0764de48 100644 --- a/hw/s390x/virtio-ccw.c +++ b/hw/s390x/virtio-ccw.c @@ -1543,6 +1543,7 @@ static void virtio_ccw_rng_instance_init(Object *obj) object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_RNG); object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); qdev_alias_all_properties(DEVICE(&dev->vdev), obj); + object_unref(OBJECT(&dev->vdev)); object_property_add_link(obj, "rng", TYPE_RNG_BACKEND, (Object **)&dev->vdev.conf.rng, qdev_prop_allow_set_link_before_realize, diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index 39cda4effd..685395548f 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -1527,6 +1527,7 @@ static void virtio_rng_initfn(Object *obj) object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_RNG); object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); qdev_alias_all_properties(DEVICE(&dev->vdev), obj); + object_unref(OBJECT(&dev->vdev)); object_property_add_link(obj, "rng", TYPE_RNG_BACKEND, (Object **)&dev->vdev.conf.rng, qdev_prop_allow_set_link_before_realize, |