Blender 2.91.2 consistently crashes re-opening an auto-save backup file in OpenSubdiv::.. #85903

New Issue

Corbin Dunn · 2021-02-22T21:38:02+01:00

Corbin Dunn commented

2021-02-22 21:38:02 +01:00

System Information
Operating system: macOS 11.1 (20C69), Intel x86-64
Graphics card: See crash report attached. sword_20525_autosave.blend

Blender Version
2.91.2

Short description of error
Open the attached file; it will consistently crash blender when opening.

Blender_2021-02-22-123153_scimmia.crash

Top of the report:

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_platform.dylib 0x00007fff20367109 _platform_memmove$VARIANT$Haswell + 137
1 org.blenderfoundation.blender 0x000000010ca2bca3

::v3_4_3::Far::GregoryConverter::computeIrregularFacePoints(int, OpenSubdiv::v3_4_3::Far::SparseMatrix&, float*, int*) const + 659
2 org.blenderfoundation.blender 0x000000010ca2abc2 OpenSubdiv::v3_4_3::Far::GregoryConverter::Convert(OpenSubdiv::v3_4_3::Far::SparseMatrix&) const + 1170
3 org.blenderfoundation.blender 0x000000010ca2a309 OpenSubdiv::v3_4_3::Far::GregoryConverter::GregoryConverter(OpenSubdiv::v3_4_3::Far::SourcePatch const&, OpenSubdiv::v3_4_3::Far::SparseMatrix&) + 169

Exact steps for others to reproduce the error
Open the attached file.

**System Information** Operating system: macOS 11.1 (20C69), Intel x86-64 Graphics card: See crash report attached. [sword_20525_autosave.blend](https://archive.blender.org/developer/F9828229/sword_20525_autosave.blend) **Blender Version** 2.91.2 **Short description of error** Open the attached file; it will consistently crash blender when opening. [Blender_2021-02-22-123153_scimmia.crash](https://archive.blender.org/developer/F9828236/Blender_2021-02-22-123153_scimmia.crash) Top of the report: Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 libsystem_platform.dylib 0x00007fff20367109 _platform_memmove$VARIANT$Haswell + 137 1 org.blenderfoundation.blender 0x000000010ca2bca3 ::v3_4_3::Far::GregoryConverter<float>::computeIrregularFacePoints(int, OpenSubdiv::v3_4_3::Far::SparseMatrix<float>&, float*, int*) const + 659 2 org.blenderfoundation.blender 0x000000010ca2abc2 OpenSubdiv::v3_4_3::Far::GregoryConverter<float>::Convert(OpenSubdiv::v3_4_3::Far::SparseMatrix<float>&) const + 1170 3 org.blenderfoundation.blender 0x000000010ca2a309 OpenSubdiv::v3_4_3::Far::GregoryConverter<float>::GregoryConverter(OpenSubdiv::v3_4_3::Far::SourcePatch const&, OpenSubdiv::v3_4_3::Far::SparseMatrix<float>&) + 169 **Exact steps for others to reproduce the error** Open the attached file.

Corbin Dunn commented

2021-02-22 21:38:02 +01:00

Added subscriber: @corbindunn

Corbin Dunn commented

2021-02-22 22:36:30 +01:00

Tested in 2.92.0 (2.92.0 2021-02-21); still crashes. Blender has been "crashy" for me, and I bet the autosave file is corrupted.

Corbin Dunn commented

2021-02-23 04:14:58 +01:00

Seems related to the split-view. When I close the second split it becomes more stable. I'll have to test more though..

Germano Cavalcante commented

2021-02-25 12:50:30 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2021-02-25 12:50:30 +01:00

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

Germano Cavalcante closed this issue

2021-02-25 12:50:30 +01:00

Germano Cavalcante commented

2021-02-25 12:50:30 +01:00

Thanks for the report. The mesh named "MErockA_v001" is corrupted.

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.

Here the file "fixed":
sword_20525_autosave_fixed.blend

Thanks for the report. The mesh named "MErockA_v001" is corrupted. 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. Here the file "fixed": [sword_20525_autosave_fixed.blend](https://archive.blender.org/developer/F9838302/sword_20525_autosave_fixed.blend)

Corbin Dunn commented

2021-02-25 14:28:05 +01:00

In #85903#1118870, @mano-wii wrote:
Thanks for the report. The mesh named "MErockA_v001" is corrupted.

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.

Here the file "fixed":
sword_20525_autosave_fixed.blend

This was an auto-save file generated by non-development version of Blender 2.91.2, without using any special modeling tools or importers. However, Blender 2.91.2 is "crashy" for me on macOS, and it is likely that it got corrupted on the crash, as I noted above.

It's a shame that Blender can't recover from such a problem. I'll log a new bug (feature request) to have it recover from corrupt files as opposed to crashing.

> In #85903#1118870, @mano-wii wrote: > Thanks for the report. The mesh named "MErockA_v001" is corrupted. > > 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. > > Here the file "fixed": > [sword_20525_autosave_fixed.blend](https://archive.blender.org/developer/F9838302/sword_20525_autosave_fixed.blend) This was an auto-save file generated by non-development version of Blender 2.91.2, without using any special modeling tools or importers. However, Blender 2.91.2 is "crashy" for me on macOS, and it is likely that it got corrupted on the crash, as I noted above. It's a shame that Blender can't recover from such a problem. I'll log a new bug (feature request) to have it recover from corrupt files as opposed to crashing.

Corbin Dunn commented

2021-02-25 14:30:05 +01:00

I do see now that the main bug report page says

"These issues are not considered bugs:
Functionality which works as intended but could be improved.
Crashes running out of memory.
Crashes from loading corrupted Blend files."

I do see now that the main bug report page says "These issues are not considered bugs: Functionality which works as intended but could be improved. Crashes running out of memory. Crashes from loading corrupted Blend files."

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Blender 2.91.2 consistently crashes re-opening an auto-save backup file in OpenSubdiv::.. #85903