blender crash randomly on animation with link/unlink script #120795

New Issue

Eli Spizzichino · 2024-04-18T21:23:49+02:00

Eli Spizzichino commented

2024-04-18 21:23:49 +02:00

System Information
Operating system: Linux Mint 21.2
Graphics card: GTX 3090

Blender Version
Broken: 3.6.11 LTS , 4.0.2, 4.1.0
Worked: none
Short description of error
Blender crash upon rendering the animation or or baking the rigid body world cache

Exact steps for others to reproduce the error

Open the demo scene
press play to register the script in the text editor
Render animation or bake the rigid body world cache

I've asked for help since I can't pinpoint the problem, but it seems happening when I run bpy.data.objects.remove(obj) however the stacktrace randomly point to different part of the python script

**System Information** Operating system: Linux Mint 21.2 Graphics card: GTX 3090 **Blender Version** Broken: 3.6.11 LTS , 4.0.2, 4.1.0 Worked: none **Short description of error** Blender crash upon rendering the animation or or baking the rigid body world cache **Exact steps for others to reproduce the error** - Open the demo scene - press play to register the script in the text editor - Render animation or bake the rigid body world cache I've [asked for help ](https://blender.stackexchange.com/questions/316737/blender-crash-randomly-on-animation-with-link-unlink-script) since I can't pinpoint the problem, but it seems happening when I run `bpy.data.objects.remove(obj)` however the stacktrace randomly point to different part of the python script

debug.blend

2.0 MiB

debug.crash.txt

1.0 KiB

Eli Spizzichino added the

labels 2024-04-18 21:23:49 +02:00

Pratik Borhade commented

2024-04-19 07:58:38 +02:00

Hi, thanks for the report. Can confirm the crash. I guess collection/id is null or pointing to garbage memory when sending depsgraph update.
In debug build I get immediate crash after opening the file due to RigidBodyWorld->group. Maybe this is related to the crash reported here.

Hi, thanks for the report. Can confirm the crash. I guess collection/id is null or pointing to garbage memory when sending depsgraph update. In debug build I get immediate crash after opening the file due to `RigidBodyWorld->group`. Maybe this is related to the crash reported here.

Philipp Oeser commented

2024-04-19 10:57:23 +02:00

First note: modifying data in frame_change handlers can be problematic, #117386 #88726 #117386 might be related

Eli Spizzichino commented

2024-04-23 12:49:12 +02:00

I've realized that even baking the simulation make blender crash after some frames!

So at this point I'm stuck, I wanted to use Blender to produce synthetic images with a basic rigid body simulation, but if I can't modify the scene or bake it, I can't use Blender at all! (particle physics doesn't support self collision)

I've realized that even baking the simulation make blender crash after some frames! So at this point I'm stuck, I wanted to use Blender to produce synthetic images with a basic rigid body simulation, but if I can't modify the scene or bake it, I can't use Blender at all! (particle physics doesn't support self collision)

conveyor_belt.crash.txt

945 B

Philipp Oeser commented

2024-04-23 16:05:27 +02:00

OK, so first of all I think we can confirm the crash for now.

Like I said, modifying data in handlers can be problematic, maybe @Sergey knows more already?

OK, so first of all I think we can confirm the crash for now. Like I said, modifying data in handlers can be problematic, maybe @Sergey knows more already?

Philipp Oeser added

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

blender crash randomly on animation with link/unlink script #120795