Error occurred when executing KSampler:

Expected all tensors to be on the same device, but found at least two devices, cpu and cuda:0! (when checking argument for argument mat1 in method wrapper_CUDA_addmm)

File "/home/meta/comfyui_latest_4/ComfyUI/execution.py", line 154, in recursive_execute
output_data, output_ui = get_output_data(obj, input_data_all)
File "/home/meta/comfyui_latest_4/ComfyUI/execution.py", line 84, in get_output_data
return_values = map_node_over_list(obj, input_data_all, obj.FUNCTION, allow_interrupt=True)
File "/home/meta/comfyui_latest_4/ComfyUI/execution.py", line 77, in map_node_over_list
results.append(getattr(obj, func)(**slice_dict(input_data_all, i)))
File "/home/meta/comfyui_latest_4/ComfyUI/nodes.py", line 1299, in sample
return common_ksampler(model, seed, steps, cfg, sampler_name, scheduler, positive, negative, latent_image, denoise=denoise)
File "/home/meta/comfyui_latest_4/ComfyUI/nodes.py", line 1269, in common_ksampler
samples = comfy.sample.sample(model, noise, steps, cfg, sampler_name, scheduler, positive, negative, latent_image,
File "/home/meta/comfyui_latest_4/ComfyUI/custom_nodes/ComfyUI-AnimateDiff-Evolved/animatediff/sampling.py", line 178, in animatediff_sample
return orig_comfy_sample(model, noise, *args, **kwargs)
File "/home/meta/comfyui_latest_4/ComfyUI/custom_nodes/ComfyUI_Impact_Pack/modules/impact/sample_error_enhancer.py", line 22, in informative_sample
raise e
File "/home/meta/comfyui_latest_4/ComfyUI/custom_nodes/ComfyUI_Impact_Pack/modules/impact/sample_error_enhancer.py", line 9, in informative_sample
return original_sample(*args, **kwargs) # This code helps interpret error messages that occur within exceptions but does not have any impact on other operations.
File "/home/meta/comfyui_latest_4/ComfyUI/comfy/sample.py", line 101, in sample
samples = sampler.sample(noise, positive_copy, negative_copy, cfg=cfg, latent_image=latent_image, start_step=start_step, last_step=last_step, force_full_denoise=force_full_denoise, denoise_mask=noise_mask, sigmas=sigmas, callback=callback, disable_pbar=disable_pbar, seed=seed)
File "/home/meta/comfyui_latest_4/ComfyUI/comfy/samplers.py", line 716, in sample
return sample(self.model, noise, positive, negative, cfg, self.device, sampler, sigmas, self.model_options, latent_image=latent_image, denoise_mask=denoise_mask, callback=callback, disable_pbar=disable_pbar, seed=seed)
File "/home/meta/comfyui_latest_4/ComfyUI/comfy/samplers.py", line 622, in sample
samples = sampler.sample(model_wrap, sigmas, extra_args, callback, noise, latent_image, denoise_mask, disable_pbar)
File "/home/meta/comfyui_latest_4/ComfyUI/comfy/samplers.py", line 561, in sample
samples = self.sampler_function(model_k, noise, sigmas, extra_args=extra_args, callback=k_callback, disable=disable_pbar, **self.extra_options)
File "/home/meta/miniconda3/envs/comfyui_env/lib/python3.10/site-packages/torch/utils/_contextlib.py", line 115, in decorate_context
return func(*args, **kwargs)
File "/home/meta/comfyui_latest_4/ComfyUI/comfy/k_diffusion/sampling.py", line 580, in sample_dpmpp_2m
denoised = model(x, sigmas[i] * s_in, **extra_args)
File "/home/meta/miniconda3/envs/comfyui_env/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1518, in _wrapped_call_impl
return self._call_impl(*args, **kwargs)
File "/home/meta/miniconda3/envs/comfyui_env/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1527, in _call_impl
return forward_call(*args, **kwargs)
File "/home/meta/comfyui_latest_4/ComfyUI/comfy/samplers.py", line 285, in forward
out = self.inner_model(x, sigma, cond=cond, uncond=uncond, cond_scale=cond_scale, model_options=model_options, seed=seed)
File "/home/meta/miniconda3/envs/comfyui_env/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1518, in _wrapped_call_impl
return self._call_impl(*args, **kwargs)
File "/home/meta/miniconda3/envs/comfyui_env/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1527, in _call_impl
return forward_call(*args, **kwargs)
File "/home/meta/comfyui_latest_4/ComfyUI/comfy/samplers.py", line 275, in forward
return self.apply_model(*args, **kwargs)
File "/home/meta/comfyui_latest_4/ComfyUI/comfy/samplers.py", line 272, in apply_model
out = sampling_function(self.inner_model, x, timestep, uncond, cond, cond_scale, model_options=model_options, seed=seed)
File "/home/meta/comfyui_latest_4/ComfyUI/comfy/samplers.py", line 252, in sampling_function
cond_pred, uncond_pred = calc_cond_uncond_batch(model, cond, uncond_, x, timestep, model_options)
File "/home/meta/comfyui_latest_4/ComfyUI/comfy/samplers.py", line 201, in calc_cond_uncond_batch
c['control'] = control.get_control(input_x, timestep_, c, len(cond_or_uncond))
File "/home/meta/comfyui_latest_4/ComfyUI/custom_nodes/ComfyUI-Advanced-ControlNet/control.py", line 182, in get_control
return super().get_control(x_noisy, t, cond, batched_number)
File "/home/meta/comfyui_latest_4/ComfyUI/comfy/controlnet.py", line 174, in get_control
control = self.control_model(x=x_noisy.to(dtype), hint=self.cond_hint, timesteps=timestep.float(), context=context.to(dtype), y=y)
File "/home/meta/miniconda3/envs/comfyui_env/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1518, in _wrapped_call_impl
return self._call_impl(*args, **kwargs)
File "/home/meta/miniconda3/envs/comfyui_env/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1527, in _call_impl
return forward_call(*args, **kwargs)
File "/home/meta/comfyui_latest_4/ComfyUI/comfy/cldm/cldm.py", line 287, in forward
emb = self.time_embed(t_emb)
File "/home/meta/miniconda3/envs/comfyui_env/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1518, in _wrapped_call_impl
return self._call_impl(*args, **kwargs)
File "/home/meta/miniconda3/envs/comfyui_env/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1527, in _call_impl
return forward_call(*args, **kwargs)
File "/home/meta/miniconda3/envs/comfyui_env/lib/python3.10/site-packages/torch/nn/modules/container.py", line 215, in forward
input = module(input)
File "/home/meta/miniconda3/envs/comfyui_env/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1518, in _wrapped_call_impl
return self._call_impl(*args, **kwargs)
File "/home/meta/miniconda3/envs/comfyui_env/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1527, in _call_impl
return forward_call(*args, **kwargs)
File "/home/meta/comfyui_latest_4/ComfyUI/comfy/ops.py", line 28, in forward
return super().forward(*args, **kwargs)
File "/home/meta/miniconda3/envs/comfyui_env/lib/python3.10/site-packages/torch/nn/modules/linear.py", line 114, in forward
return F.linear(input, self.weight, self.bias)

Start with comfy/controlnet.py at get_control and comfy/cldm/cldm.py at forward, then reproduce the KSampler failure using the reported stack trace and involved ControlNet nodes. Done means the KSampler path no longer passes CPU and CUDA tensors into the same operation; the payload names no test file to run.

Written by the indexing model from the issue text.