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Blender Crash with Complex Geometry Nodes Group #124391

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opened 2024-07-09 09:41:15 +02:00 by Jas9r · 17 comments
Jas9r commented 2024-07-09 09:41:15 +02:00
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System Information
Operating system: Windows-10-10.0.22631-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 555.99

Blender Version
Broken: version: 4.2.0 Beta, branch: blender-v4.2-release, commit date: 2024-07-08 19:36, hash: d527e3a6bd78
Broken: 4.1.1
Worked: 4.0.2

looks like it is caused by 7bd509f73a

Short description of error
The attached blend file consists of just the default cube with a complex geometry node group added to.
Blender always crashes within a few seconds of initiating playback. The crash also occurs consistently after modifying the values in the Geometry Nodes modifier.

Exact steps for others to reproduce the error
Open the attached blend file and initiate playback.

**System Information** Operating system: Windows-10-10.0.22631-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 555.99 **Blender Version** Broken: version: 4.2.0 Beta, branch: blender-v4.2-release, commit date: 2024-07-08 19:36, hash: `d527e3a6bd78` Broken: 4.1.1 Worked: 4.0.2 looks like it is caused by 7bd509f73a97d350cbc06dcda715a7932a2b5263 **Short description of error** The attached blend file consists of just the default cube with a complex geometry node group added to. Blender always crashes within a few seconds of initiating playback. The crash also occurs consistently after modifying the values in the Geometry Nodes modifier. **Exact steps for others to reproduce the error** Open the attached blend file and initiate playback.
GN_Crash.blend
10 MiB
Jas9r added the
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 labels 2024-07-09 09:41:15 +02:00
Iliya Katushenock commented 2024-07-09 10:05:02 +02:00
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I can confirm read after free in code of modifier after geometry nodes execute.

I can confirm read after free in code of modifier after geometry nodes execute.
Iliya Katushenock commented 2024-07-09 10:06:21 +02:00
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Without real-world case of this bug, this will not be considered as high priority bug for me.

Without real-world case of this bug, this will not be considered as high priority bug for me.
Iliya Katushenock added this to the 4.2 LTS milestone 2024-07-09 10:06:32 +02:00
Gerstmann Bradley commented 2024-07-09 10:14:31 +02:00
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To me it seems a very recent regression.
Broken: version: 4.2.0 Beta, branch: blender-v4.2-release, commit date: 2024-07-08 19:36, hash: d527e3a6bd78
Worked: version: 4.2.0 Beta, branch: blender-v4.2-release, commit date: 2024-07-06 04:49, hash: 11b1919bcfe3

I haven't tested other versions to see if this can be an accident or whatever.
but I am very discouraged with this large node group.
I would encourage the reporter to simplify the file, otherwise investing resources in debugging seems pointless and harmful.

To me it seems a very recent regression. Broken: version: 4.2.0 Beta, branch: blender-v4.2-release, commit date: 2024-07-08 19:36, hash: `d527e3a6bd78` Worked: version: 4.2.0 Beta, branch: blender-v4.2-release, commit date: 2024-07-06 04:49, hash: `11b1919bcfe3` I haven't tested other versions to see if this can be an accident or whatever. but I am very discouraged with this large node group. I would encourage the reporter to simplify the file, otherwise investing resources in debugging seems pointless and harmful.
Iliya Katushenock commented 2024-07-09 10:16:34 +02:00
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I can reproduce this in version: 4.2.0 Alpha, branch: main, commit date: 2024-04-26 21:19, hash: d11c6962b099

I can reproduce this in version: 4.2.0 Alpha, branch: main, commit date: 2024-04-26 21:19, hash: `d11c6962b099`
Jas9r commented 2024-07-09 10:19:25 +02:00
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Hello, I would also like to add that this is an obfuscated version of a product (Advanced Array Tool) that I sell online, with a significant user base.

Hello, I would also like to add that this is an obfuscated version of a product (Advanced Array Tool) that I sell online, with a significant user base.
Iliya Katushenock commented 2024-07-09 10:20:57 +02:00
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Is there is real-world version of that what we can test and see the same issue (without such a lot of spaghetti)?

Is there is real-world version of that what we can test and see the same issue (without such a lot of spaghetti)?
Gerstmann Bradley commented 2024-07-09 10:22:38 +02:00
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My opinion doesn't change. whether it's a real world case or fake sample case, I think it should be simplified.

My opinion doesn't change. whether it's a real world case or fake sample case, I think it should be simplified.
Jas9r commented 2024-07-09 10:28:43 +02:00
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I'm unable to share it publicly since it's a commercial product available online. However, I'd be happy to provide it via email. Please let me know if you'd like me to send it to you privately.

I'm unable to share it publicly since it's a commercial product available online. However, I'd be happy to provide it via email. Please let me know if you'd like me to send it to you privately.
Iliya Katushenock commented 2024-07-09 10:33:06 +02:00
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Better to create a (similar) new one with free license.

Better to create a (similar) new one with free license.
Gerstmann Bradley commented 2024-07-09 10:33:25 +02:00
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I'm unable to share it publicly since it's a commercial product available online. However, I'd be happy to provide it via email. Please let me know if you'd like me to send it to you privately.

It's probably discouraged due to many reasons. for example, other developers must also have it to know what's wrong.
And more importantly, likely someone still have to simplify the file to investigate. It's a matter costing your time or many other people's time in investigating.

> I'm unable to share it publicly since it's a commercial product available online. However, I'd be happy to provide it via email. Please let me know if you'd like me to send it to you privately. It's probably discouraged due to many reasons. for example, other developers must also have it to know what's wrong. And more importantly, likely someone still have to simplify the file to investigate. It's a matter costing your time or many other people's time in investigating.
Jas9r commented 2024-07-09 16:27:10 +02:00
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Simplifying the file doesn't help it. The crashes occur less often as I remove nodes, almost never crashing with fewer than 900 nodes. Adding many reroute nodes also reduces crashes. The crash doesn't seem to be caused by a specific set of nodes but rather by the extensive calculations involved. This "spaghetti" node group worked well in Blender 4.1.0 Beta until something broke. Also creating a new one would be extremely time-consuming.

Simplifying the file doesn't help it. The crashes occur less often as I remove nodes, almost never crashing with fewer than 900 nodes. Adding many reroute nodes also reduces crashes. The crash doesn't seem to be caused by a specific set of nodes but rather by the extensive calculations involved. This "spaghetti" node group worked well in Blender 4.1.0 Beta until something broke. Also creating a new one would be extremely time-consuming.
Philipp Oeser commented 2024-07-10 09:48:04 +02:00
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Bisect will probably help, will do...

Bisect will probably help, will do...
🎉 1
Philipp Oeser commented 2024-07-10 10:04:04 +02:00
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Worked: 4.0.2

@Jas9r : could we have a file that actually outputs something in 4.0.2?

For me, that nodetree outputs empty geometry in 4.0.2

And btw. : it does not seem to crash in a lite build for me (28c3332e32), whereas a regular build crashes

>Worked: 4.0.2 @Jas9r : could we have a file that actually outputs something in 4.0.2? For me, that nodetree outputs empty geometry in 4.0.2 And btw. : it does not seem to crash in a lite build for me (28c3332e32b7072b559ae4086412ce6b44176a17), whereas a regular build crashes
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 labels 2024-07-10 10:04:27 +02:00
Iliya Katushenock commented 2024-07-10 10:13:58 +02:00
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I had the crash in lite debug build\

I had the crash in lite debug build\
Jas9r commented 2024-07-10 11:26:19 +02:00
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@lichtwerk Yes, here's a version saved in 3.6.4

@lichtwerk Yes, here's a version saved in 3.6.4
GN_Crash_2.blend
20 MiB
Philipp Oeser commented 2024-07-10 12:38:17 +02:00
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OK, will bisect (broke between good b469d9dd7d and bad e246c111fb it seems -- 7bd509f73a seems like a culprit candidate?)

Note: before the crash we are getting:

-> Modifier: GeometryNodes 	(hash: 0xb7506a1744781b02387e24fb9e8dc997)
Missing outputs:
  Output
OK, will bisect (broke between good b469d9dd7dc5 and bad e246c111fba6 it seems -- 7bd509f73a97d350cbc06dcda715a7932a2b5263 seems like a culprit candidate?) Note: before the crash we are getting: ``` -> Modifier: GeometryNodes (hash: 0xb7506a1744781b02387e24fb9e8dc997) Missing outputs: Output ```
Philipp Oeser added
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 labels 2024-07-10 12:38:32 +02:00
Philipp Oeser commented 2024-07-10 13:14:27 +02:00
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Yeah, looks like it is caused by 7bd509f73a

@JacquesLucke : mind checking? (I am aware the noodles are a mess in their current state, but maybe you find something?)

I will also dare setting prio to High for now (since this is a crasher)

Yeah, looks like it is caused by 7bd509f73a97d350cbc06dcda715a7932a2b5263 @JacquesLucke : mind checking? (I am aware the noodles are a mess in their current state, but maybe you find something?) I will also dare setting prio to High for now (since this is a crasher)
Philipp Oeser added
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High
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Severity
Normal
 labels 2024-07-10 13:14:46 +02:00
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