Crashing with extrusion tool (Blender 2.8, Windows 10) #57134
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Reference: blender/blender#57134
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System Information
CPU: Ryzen 2500U
GPU: Vega 8
RAM: 8GB
OS: Windows 10 Home 64bit 1803
Blender Version
Broken: Blender 2.8 (blender-2.80-1dd3b93d2f9-win64)
Short description of error
Occasionally while using the extrude tool in edit mode with snapping to vertice, edges, faces or volumes on, Blender will crash.
Added subscriber: @Alaska
Added subscriber: @dfelinto
I can't reproduce this here. Please attach the system crash log.
According to blender documentation, crash logs on Windows are disabled. https://docs.blender.org/manual/en/dev/troubleshooting/crash.html
Are you able to suggest where I could find it for Blender 2.8 for Windows.
This comment was removed by @Alaska
I ran Blender in --debug-all mode. This is the error for the crash I experienced:
I decided to run the same test on all the versions of Blender 2.8 I had on my computer as I've noticed that later versions were more reliable. Turns out every version I had experienced this issue with the exact same error report. The only difference being the address, but I'm putting that down to the fact that the address is probably in RAM which means it can change quite a bit.
The versions I had for testing are:
29c2c307f6
- September 10th6f42eb245b
- September 27th9b49a0d971
- October 8th1dd3b93d2f
- October 10thI've found another factor that needs to be activated for this crash to occur. Snapping to an object. At the moment my tests have shown that increment snapping is unaffected. However, vertices, edges, faces, and volumes show this issue.
I'll add this to the original post for anyone that stumbles across this.
Added subscriber: @mont29
Cannot reproduce still.
Please always attach a small and simple .blend file to help reproducing the issue, always saves us a tremendous of time.
I've just updated to blender-2.80-bf34f95a9ed (October 25th) and the issue persists.
As for providing a file, the startup file shows this issue along with every other file I've worked on such as this one:
Test.blend
Here's a video of the issue occurring: https://youtu.be/8BshcKbHn9k
I know it's an odd case, constantly extruding something until the software crashes, but this just seems to occur at random times while working on projects such as in the file provided above.
Same sort of error code:
It's possible this issue is limited to APU's (The GPU and CPU share RAM and the error is an inability to access something from RAM from what I can tell) or Windows. I currently don't know how to install another operating system so I can't test that. However, I'm upgrading my secondary PC to a separate CPU (R5 2600) and GPU (RX 570) setup in a few days, so hopefully I can test the APU hypothesis.
Note: The secondary system currently runs a A6 9500 APU on Windows 10 and also experiences this issue.
The issue persists with a discreet GPU and CPU on blender-2.80-c750ebe113e (October 29th).
Added subscriber: @rboxman
I seem to be able to repro here -- indeed it looks related to snapping.
em->looptris is bogus in the below codepath. See line 862 of bvhutils.c which leads to crash on line 875.
Still cannot reproduce :/
Could be windows thing, maybe?
I'm still capable of reproducing this bug in recent versions. Probably is a Window's thing then.
I'm no longer able to reproduce this bug in Blender 2.8
565de7750b
. However, I'll leave this open and let the developers decide whether or not to close this report.Changed status from 'Open' to: 'Resolved'