Seg fault crash with various edit functions #90532
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Reference: blender/blender#90532
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System Information
Operating system: Linux-5.10.55-1-MANJARO-x86_64-with-glibc2.33 64 Bits
Graphics card: Mesa DRI Intel(R) HD Graphics 4600 (HSW GT2) Intel Open Source Technology Center 4.5 (Core Profile) Mesa 21.1.6
Blender Version
Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-08-08 20:09, hash:
4c26bb0232
Worked: An older daily build from about a week ago, also 2.93
Caused by
647a8bff06
Short description of error
Newest Blender master daily build immediately crashes when trying to edit the attached test mesh. Also the shading on it in edit mode appears broken. None of these problems are present in Blender 2.93 from distro repo.
Exact steps for others to reproduce the error
Alternatively:
2. In edit mode, select all vertices / faces
3. Use Mesh > Normals > Flip
Alternatively also:
Additional info
The problematic mesh was extracted from a bigger document, but even after appending only the mesh data or exporting it as OBJ or FBX, importing and saving into a new document all through Blender 2.93, the crash is still reproducible in 3.0. Strangely, I'm not able to reproduce a crash or the shading issues if I start from a new document and edit a cube or poly plane into the same shape.
I disabled all add-ons that could have interfered, tried the Cycles-X branch build from yesterday and ran Blender both on the integrated and on the dedicated GPU through
prime-run
on this laptop, but the outcome is always the same.The generated crash log is also attached.
edit crash 1.crash.txt
edit crash 1.obj
edit crash 1.blend
Added subscriber: @Snudl
#90538 was marked as duplicate of this issue
Added subscriber: @PratikPB2123
Thanks for creating a separate report.
Notes for those who is watching this issue for the first time.
647a8bff06
Changed status from 'Needs Triage' to: 'Confirmed'
I've got a fix for this, updating comments and checking other bugs in this area before committing.
This issue was referenced by
909e0819ae
Changed status from 'Confirmed' to: 'Resolved'
Added subscriber: @borschberry