From: Eric Auger <[email protected]>

If realize fails, domains and endpoints trees may be NULL. On
unrealize(), this produces assertions:

"GLib: g_tree_destroy: assertion 'tree != NULL' failed"

Check that the trees are non NULL before destroying them.

Cc: [email protected]
Signed-off-by: Eric Auger <[email protected]>
Reviewed-by: Cornelia Huck <[email protected]>

Message-Id: <[email protected]>
Reviewed-by: Michael S. Tsirkin <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
---
 hw/virtio/virtio-iommu.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c
index 5d56865e56..21ec63b108 100644
--- a/hw/virtio/virtio-iommu.c
+++ b/hw/virtio/virtio-iommu.c
@@ -801,8 +801,12 @@ static void virtio_iommu_device_unrealize(DeviceState *dev)
     VirtIOIOMMU *s = VIRTIO_IOMMU(dev);
 
     g_hash_table_destroy(s->as_by_busptr);
-    g_tree_destroy(s->domains);
-    g_tree_destroy(s->endpoints);
+    if (s->domains) {
+        g_tree_destroy(s->domains);
+    }
+    if (s->endpoints) {
+        g_tree_destroy(s->endpoints);
+    }
 
     virtio_delete_queue(s->req_vq);
     virtio_delete_queue(s->event_vq);
-- 
MST


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