Going into edit mode on the provided object crashes Blender #97256

New Issue

Marko Grdinić · 2022-04-11T21:00:24+02:00

Marko Grdinić commented

2022-04-11 21:00:24 +02:00

System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 970/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 471.96

Blender Version
Broken: version: 3.1.0, branch: master, commit date: 2022-03-08 18:16, hash: c77597cd0e
Worked: (newest version of Blender that worked as expected)

Short description of error
When I try tabbing into edit mode on the object, Blender crashes. I don't know how I managed to corrupt it.

Exact steps for others to reproduce the error
Tab the object.

Bug.blend

**System Information** Operating system: Windows-10-10.0.19044-SP0 64 Bits Graphics card: NVIDIA GeForce GTX 970/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 471.96 **Blender Version** Broken: version: 3.1.0, branch: master, commit date: 2022-03-08 18:16, hash: `c77597cd0e` Worked: (newest version of Blender that worked as expected) **Short description of error** When I try tabbing into edit mode on the object, Blender crashes. I don't know how I managed to corrupt it. **Exact steps for others to reproduce the error** Tab the object. [Bug.blend](https://archive.blender.org/developer/F12996429/Bug.blend)

Marko Grdinić commented

2022-04-11 21:00:24 +02:00

Added subscriber: @mrakgr

Hans Goudey commented

2022-04-11 21:13:49 +02:00

Added subscriber: @HooglyBoogly

Hans Goudey commented

2022-04-11 21:13:49 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Hans Goudey commented

2022-04-11 21:13:49 +02:00

Hi, I can confirm the crash. The reason for the crash is that the mesh has stored that vertex 1372509248 is selected, but there are only 8 vertices.

What is the history of this file? Can this be reproduced?

Hi, I can confirm the crash. The reason for the crash is that the mesh has stored that vertex 1372509248 is selected, but there are only 8 vertices. What is the history of this file? Can this be reproduced?

Pratik Borhade commented

2022-04-12 05:36:20 +02:00

Added subscribers: @lichtwerk, @PratikPB2123

Pratik Borhade commented

2022-04-12 05:36:20 +02:00

Yes mesh is corrupted.
Execute the following script, It'll detect the mesh corruption and will also fix the mesh

for obj in bpy.data.objects:

if obj.type == "MESH" and obj.data is not None:
if obj.data.validate():
print(f"Error found: object {obj.name} had invalid mesh data!")```

@lichtwerk had shared this script in #93972 :)
> I don't know how I managed to corrupt it.

Unfortunately unless there are clear instructions on how to reproduce it from scratch we cannot debug this any further.
Things that may cause mesh corruption: Importers, development versions of Blender, modeling tools.

Yes mesh is corrupted. Execute the following script, It'll detect the mesh corruption and will also fix the mesh ```import bpy for obj in bpy.data.objects: ``` if obj.type == "MESH" and obj.data is not None: if obj.data.validate(): print(f"Error found: object {obj.name} had invalid mesh data!")``` ``` @lichtwerk had shared this script in #93972 :) > I don't know how I managed to corrupt it. Unfortunately unless there are clear instructions on how to reproduce it from scratch we cannot debug this any further. Things that may cause mesh corruption: Importers, development versions of Blender, modeling tools.

Marko Grdinić commented

2022-04-12 10:32:49 +02:00

Unfortunately unless there are clear instructions on how to reproduce it from scratch we cannot debug this any further.

This is going to be hard. During that session I was working on a desk and playing around with modifiers and only realized the object was corrupted much later. I wasn't really doing anything esoteric, for the specific object I was only using subdiv and maybe decimate and triangulate. Apart from that, there is no way I can remember the specific sequence of action. The culprit might not be the modifier. There might also be a chance that me working on another object in the scene might have done something. I was hoping the save file might give enough of a clue, but nevermind it for now. I'll keep an eye open in the future in case I run into the bug again. Please feel free to close this.

> Unfortunately unless there are clear instructions on how to reproduce it from scratch we cannot debug this any further. This is going to be hard. During that session I was working on a desk and playing around with modifiers and only realized the object was corrupted much later. I wasn't really doing anything esoteric, for the specific object I was only using subdiv and maybe decimate and triangulate. Apart from that, there is no way I can remember the specific sequence of action. The culprit might not be the modifier. There might also be a chance that me working on another object in the scene might have done something. I was hoping the save file might give enough of a clue, but nevermind it for now. I'll keep an eye open in the future in case I run into the bug again. Please feel free to close this.

Pratik Borhade commented

2022-04-12 14:54:40 +02:00

Hi, thanks for the information.
I think we can close this report if source of the mesh corruption is not known to us.
@lichtwerk & @HooglyBoogly , thoughts?

Hi, thanks for the information. I think we can close this report if source of the mesh corruption is not known to us. @lichtwerk & @HooglyBoogly , thoughts?

Philipp Oeser commented

2022-04-12 15:08:27 +02:00

If we have no way to reproduce, we usually close the report, yes!
(we can always reopen in case these repro steps are found later)

If we have no way to reproduce, we usually close the report, yes! (we can always reopen in case these repro steps are found later)

Pratik Borhade commented

2022-04-12 15:13:30 +02:00

Changed status from 'Needs User Info' to: 'Archived'

Pratik Borhade closed this issue

2022-04-12 15:13:30 +02:00

Pratik Borhade commented

2022-04-12 15:13:30 +02:00

Ok, closing then.

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Going into edit mode on the provided object crashes Blender #97256