Verify architecture for loaded Spandrel models

modules/modelloader.py

@@ -6,6 +6,8 @@ import shutil
 import importlib
 from urllib.parse import urlparse
 
+import torch
+
 from modules import shared
 from modules.upscaler import Upscaler, UpscalerLanczos, UpscalerNearest, UpscalerNone
 from modules.paths import script_path, models_path
@@ -183,9 +185,18 @@ def load_upscalers():
     )
 
 
-def load_spandrel_model(path, *, device, half: bool = False, dtype=None):
+def load_spandrel_model(
+    path: str,
+    *,
+    device: str | torch.device | None,
+    half: bool = False,
+    dtype: str | None = None,
+    expected_architecture: str | None = None,
+):
     import spandrel
     model = spandrel.ModelLoader(device=device).load_from_file(path)
+    if expected_architecture and model.architecture != expected_architecture:
+        raise TypeError(f"Model {path} is not a {expected_architecture} model")
     if half:
         model = model.model.half()
     if dtype: