On 5/18/20 10:37 AM, David Hildenbrand wrote:
We took a reference when realizing, so let's drop that reference when
unrealizing.

Fixes: c13c4153f76d ("virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_HINT")
Cc: Wei Wang <wei.w.w...@intel.com>
Cc: Alexander Duyck <alexander.du...@gmail.com>
Cc: Michael S. Tsirkin <m...@redhat.com>
Cc: Philippe Mathieu-Daudé <phi...@redhat.com>
Signed-off-by: David Hildenbrand <da...@redhat.com>
---
  hw/virtio/virtio-balloon.c | 1 +
  1 file changed, 1 insertion(+)

diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c
index a4fcf2d777..3f8fc50be0 100644
--- a/hw/virtio/virtio-balloon.c
+++ b/hw/virtio/virtio-balloon.c
@@ -820,6 +820,7 @@ static void virtio_balloon_device_unrealize(DeviceState 
*dev)
if (s->free_page_bh) {
          qemu_bh_delete(s->free_page_bh);
+        object_unref(OBJECT(s->iothread));
          virtio_balloon_free_page_stop(s);
          precopy_remove_notifier(&s->free_page_report_notify);
      }


Reviewed-by: Philippe Mathieu-Daudé <phi...@redhat.com>


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