Crash with image previews in KSampler nodes

[fmatray]

I have a crash since today when I use the latent preview Latent2RGB. It works with TAESD. After 2 steps, the preview turns into black with some dots like a random corrupted image. Then the server crashs with the error below :

python(1961,0x1feed3ac0) malloc: Incorrect checksum for freed object 0x35d154600: probably modified after being freed.
Corrupt value: 0x0
python(1961,0x1feed3ac0) malloc: *** set a breakpoint in malloc_error_break to debug
zsh: abort      python -d main.py

I have this version of comfyUI running on an Apple M1.

ComfyUI Revision: 2194 [11a2ad51] | Released on '2024-05-19'

Thanks for your help.

[lquesada]

this also happens to me

[lquesada]

Also, using "normal" scheduler (e.g. instead of "karras") doesn't crash but always yields noise or a black image.

[lquesada]

well, whatever I use, even with preview disabled, after a certain number of steps (20-30) the result is a black image.

Also tried reverting to ComfyUI from 10 days ago and it still happens. Also tried with no custom nodes loaded and this still happens. Not sure what triggered this.

[lquesada]

Also getting this which may be related:

0%| | 0/30 [00:00<?, ?it/s] /.../python3.10/site-packages/torchsde/_brownian/brownian_interval.py:608: UserWarning: Should have tb<=t1 but got tb=14.614643096923828 and t1=14.614643. warnings.warn(f"Should have {tb_name}<=t1 but got {tb_name}={tb} and t1={self._end}.")

[lquesada]

Ok an extra data point: when showing the previews, sometimes it shows all noise and sometimes it shows the actual preview. I think this may be some sort of race condition when showing previews, but again, not sure what triggered this.

I pulled the version 10 days ago, still the error, I recreated venv from scratch, still the error, I removed all custom nodes, still the error...

[lquesada]

more details: this is when showing pictures in the UI: when comfyui doesn't crash, the pictures sometimes show blank in the previews or even in the save image node, but the actual image is exported properly.

[lquesada]

Possibly related: https://github.com/comfyanonymous/ComfyUI/issues/3521

[github-actions[bot]]

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