Repeatable crash with mesh.bevel operator #69966
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Reference: blender/blender#69966
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System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1050 Ti with Max-Q Design/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.70
Blender Version
Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash:
f6cb5f5449
Worked: (optional)
Short description of error
This is an odd one, and took me over a week of hammering on it to come up with a 100% repro. At first it seemed totally random, as I had artists in my studio reporting random crashes after beveling and watched it happen a few times with no clear common denominator, but the crash always happens at the exact same address:
Exact steps for others to reproduce the error
These are the exact steps you will need to repro (I've demonstrated it in the attached video as well).
bevelcrash.mp4
bevelcrash.blend
Added subscriber: @testure
Added subscriber: @tomjk
Cannot reproduce here.
Operating system: Linux-4.15.0-55-generic-x86_64-with-debian-stretch-sid 64 Bits
Blender: 2.80 and latest master
Please check if the problem has been fixed for you since 2.80:
Well, I'll post an update whenever either the 2.81 download finishes (it's been going for about 2 hours now, previous attempts have timed out) or the build I just started finishes.
In the meantime, here's a video of it happening with default settings in 2.80 final:
bevelcrash_defaultsettings.mp4
Good news, does not appear to be happening on the build I just made- so it may have been fixed by something else. I'll hammer on it for a bit longer and see if I can get it to break
Scratch that- not happening in edge mode, but I was able to repro it in face mode. Since I went through the trouble of building Blender I went ahead and made a debug build to get a callstack, this is the output:
Here's a video of it happening in face mode with the latest from git.
bevelcrash_281_defaultsettings.mp4
Added subscriber: @JacquesLucke
I cannot reproduce it either.
Please clarify what you mean by "committing the operation" and "undo without committing the operation".
Furthermore, please prepare a new file in which you can reproduce the crash with as few steps as possible.
committing the operation- when the operator is no longer running modal and has returned. in other words- while the operator panel with all of the operator properties is still visible.
I'll try, but as you can see in the video above it's happening on the default cube with factory defaults restored. Not sure how much simpler I can make it than that :)
Added subscriber: @mont29
Cannot reproduce either here on linux with current master. Your crashlog is weird too, since it seems to go through py API of bmesh when freeing operator, that does not make much sense as bevel is a C op… What is the operator in the
WM_operator_free()
call in that stack when the crash happen?Changed status from 'Open' to: 'Archived'
More than a week without reply or activity. Due to the policy of the tracker archiving for until required info/data are provided.