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-rw-r--r--hw/core/qdev.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index 606ab53c42..0019a49503 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -928,6 +928,13 @@ static void device_set_realized(Object *obj, bool value, Error **errp)
             goto post_realize_fail;
         }
 
+        /*
+         * always free/re-initialize here since the value cannot be cleaned up
+         * in device_unrealize due to its usage later on in the unplug path
+         */
+        g_free(dev->canonical_path);
+        dev->canonical_path = object_get_canonical_path(OBJECT(dev));
+
         if (qdev_get_vmsd(dev)) {
             if (vmstate_register_with_alias_id(dev, -1, qdev_get_vmsd(dev), dev,
                                                dev->instance_id_alias,
@@ -984,6 +991,8 @@ child_realize_fail:
     }
 
 post_realize_fail:
+    g_free(dev->canonical_path);
+    dev->canonical_path = NULL;
     if (dc->unrealize) {
         dc->unrealize(dev, NULL);
     }
@@ -1102,10 +1111,12 @@ static void device_unparent(Object *obj)
 
     /* Only send event if the device had been completely realized */
     if (dev->pending_deleted_event) {
-        gchar *path = object_get_canonical_path(OBJECT(dev));
+        g_assert(dev->canonical_path);
 
-        qapi_event_send_device_deleted(!!dev->id, dev->id, path, &error_abort);
-        g_free(path);
+        qapi_event_send_device_deleted(!!dev->id, dev->id, dev->canonical_path,
+                                       &error_abort);
+        g_free(dev->canonical_path);
+        dev->canonical_path = NULL;
     }
 
     qemu_opts_del(dev->opts);