EXCEPTION_ACCESS_VIOLATION when baking between linked objects #75295

New Issue

Alexander Wingård · 2020-04-02T00:23:32+02:00

2020-04-02 00:23:32 +02:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.59

Blender Version
Broken: version: 2.82 (sub 7), branch: master, commit date: 2020-03-12 05:06, hash: 375c7dc4ca
Worked: (optional)

Short description of error
When experimenting with the idea of having linked duplicate objects and bake materials between them I found a reproducible crash.

Error   : EXCEPTION_ACCESS_VIOLATION
Address : 0x00007FF63BB28F6E
Module  : C:\Program Files\Blender Foundation\Blender 2.82\blender.exe

Exact steps for others to reproduce the error

Oppen attached file
Try to bake the textures (blender crashes)
Sometimes it doesn't crash the first time but always atleast on the second or third attempt.

mushroom.blend

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.59 **Blender Version** Broken: version: 2.82 (sub 7), branch: master, commit date: 2020-03-12 05:06, hash: `375c7dc4ca` Worked: (optional) **Short description of error** When experimenting with the idea of having linked duplicate objects and bake materials between them I found a reproducible crash. ``` Error : EXCEPTION_ACCESS_VIOLATION Address : 0x00007FF63BB28F6E Module : C:\Program Files\Blender Foundation\Blender 2.82\blender.exe ``` **Exact steps for others to reproduce the error** - Oppen attached file - Try to bake the textures (blender crashes) Sometimes it doesn't crash the first time but always atleast on the second or third attempt. [mushroom.blend](https://archive.blender.org/developer/F8442320/mushroom.blend)

Alexander Wingård commented

2020-04-02 00:23:32 +02:00

Added subscriber: @AlexanderWingard

Germano Cavalcante commented

2020-04-02 16:22:39 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Germano Cavalcante commented

2020-04-02 16:28:26 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-04-02 16:28:26 +02:00

The problem seems to be related to the same described in #43553

Alexander Wingård commented

2020-04-02 17:16:56 +02:00

In my case, the few times it did not crash it actually baked correctly both diffuse-color, normals and AO.

Alexander Wingård commented

2020-04-02 23:06:50 +02:00

Hey!

I found the solution that makes this work for me, maybe it can provide a hint of where the segfault is. I need to have the same number of materials in the bake target duplicate as the source so if I add the same number of copies of the target material it does not crash:

BAD:

GOOD:

Hey! I found the solution that makes this work for me, maybe it can provide a hint of where the segfault is. I need to have the same number of materials in the bake target duplicate as the source so if I add the same number of copies of the target material it does not crash: BAD: ![material-bad.PNG](https://archive.blender.org/developer/F8444757/material-bad.PNG) GOOD: ![material-good.PNG](https://archive.blender.org/developer/F8444760/material-good.PNG)

Philipp Oeser removed the

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EXCEPTION_ACCESS_VIOLATION when baking between linked objects #75295