[PATCH] virtio-dmabuf: Ensure UUID persistence for hash table insertion

[Dorinda Bassey]

In `virtio_add_resource` function, the UUID used as a key for
`g_hash_table_insert` was temporary, which could lead to
invalid lookups when accessed later. This patch ensures that
the UUID remains valid by duplicating it into a newly allocated
memory space (persistent_uuid). The value is then inserted into
the hash table with this persistent UUID key to ensure that the
key stored in the hash table remains valid as long as the hash
table entry exists.

Signed-off-by: Dorinda Bassey <dbassey@redhat.com>
---
 hw/display/virtio-dmabuf.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/hw/display/virtio-dmabuf.c b/hw/display/virtio-dmabuf.c
index 3dba4577ca7..4353970bc87 100644
--- a/hw/display/virtio-dmabuf.c
+++ b/hw/display/virtio-dmabuf.c
@@ -39,7 +39,12 @@ static bool virtio_add_resource(QemuUUID *uuid, 
VirtioSharedObject *value)
                                                g_free);
     }
     if (g_hash_table_lookup(resource_uuids, uuid) == NULL) {
-        g_hash_table_insert(resource_uuids, uuid, value);
+        QemuUUID *persistent_uuid = g_memdup2(uuid, sizeof(QemuUUID));
+        if (persistent_uuid == NULL) {
+            result = false;
+        } else {
+            g_hash_table_insert(resource_uuids, persistent_uuid, value);
+        }
     } else {
         result = false;
     }
-- 
2.47.0