Fix pipeline callback state initialized in __init__ (#11002) [r2]

src/diffusers/pipelines/bria/pipeline_bria.py

@@ -123,6 +123,7 @@ def __init__(
         image_encoder: CLIPVisionModelWithProjection = None,
         feature_extractor: CLIPImageProcessor = None,
     ):
+        super().__init__()
         self.register_modules(
             vae=vae,
             text_encoder=text_encoder,

src/diffusers/pipelines/bria_fibo/pipeline_bria_fibo.py

@@ -99,6 +99,7 @@ def __init__(
         text_encoder: SmolLM3ForCausalLM,
         tokenizer: AutoTokenizer,
     ):
+        super().__init__()
         self.register_modules(
             vae=vae,
             text_encoder=text_encoder,

src/diffusers/pipelines/bria_fibo/pipeline_bria_fibo_edit.py

@@ -257,6 +257,7 @@ def __init__(
         text_encoder: SmolLM3ForCausalLM,
         tokenizer: AutoTokenizer,
     ):
+        super().__init__()
         self.register_modules(
             vae=vae,
             text_encoder=text_encoder,

src/diffusers/pipelines/pipeline_utils.py

@@ -207,6 +207,30 @@ class DiffusionPipeline(ConfigMixin, PushToHubMixin):
     _load_connected_pipes = False
     _is_onnx = False
 
+    def __init__(self):
+        # Per-call pipeline state exposed via @property; defaults are overwritten in __call__.
+        # See https://github.com/huggingface/diffusers/issues/11002
+        self._guidance_scale = 1.0
+        self._clip_skip = None
+        self._interrupt = False
+        self._cross_attention_kwargs = None
+        self._num_timesteps = 0
+        self._attention_kwargs = None
+        self._guidance_rescale = 0.0
+        self._denoising_start = None
+        self._denoising_end = None
+        self._joint_attention_kwargs = None
+        self._pag_scale = 0.0
+        self._pag_adaptive_scale = 0.0
+        self._current_timestep = None
+        self._image_guidance_scale = 1.0
+        self._stg_scale = 0.0
+        self._modality_scale = 1.0
+        self._audio_guidance_scale = 1.0
+        self._audio_guidance_rescale = 0.0
+        self._audio_stg_scale = 0.0
+        self._audio_modality_scale = 1.0
+
     def register_modules(self, **kwargs):
         for name, module in kwargs.items():
             # retrieve library

tests/pipelines/test_pipelines_common.py

@@ -1155,6 +1155,17 @@ def tearDown(self):
         gc.collect()
         backend_empty_cache(torch_device)
 
+    def test_pipeline_call_state_before_call(self):
+        components = self.get_dummy_components()
+        pipe = self.pipeline_class(**components)
+
+        if hasattr(type(pipe), "interrupt"):
+            self.assertFalse(pipe.interrupt)
+        if hasattr(type(pipe), "guidance_scale"):
+            self.assertEqual(pipe.guidance_scale, 1.0)
+        if hasattr(type(pipe), "num_timesteps"):
+            self.assertEqual(pipe.num_timesteps, 0)
+
     def test_save_load_local(self, expected_max_difference=5e-4):
         components = self.get_dummy_components()
         for key in components: