Random rare crashes in override code - reported by studio #81963
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Reference: blender/blender#81963
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Studio animators have been facing crashes with overrides of complex characters, when saving .blend file, after an override resync.
Here is a backtrace from @PabloFournier :
This seems to point again to some pose data not being up-to-date...
Slightly different steps leading to the same issue, this is fixed now in master.
Blender Version
Broken: version: 2.90.1, version: 2.92.0 Alpha, branch: master, commit date: 2020-10-22 10:41, hash:
dea3b8d984Worked: 2.82a (but there is no chain icon on the armature data block, so perhaps it was not even linked back then), 2.83.8 LTS
Short description of error
Blender crashes using make local on an armature of a linked collection with library override.
It does not crash under a certain condition: if you save the file after step 4) below, then revert the file, don't click the armature again (it's already active), just continue at step 5) it will not crash.
Reset to factory defaults did not prevent the crash.
Exact steps for others to reproduce the error
Changed status from 'Needs Triage' to: 'Confirmed'
Added subscribers: @PabloFournier, @mont29, @Mets
#81962 was marked as duplicate of this issue
Added subscribers: @georgK, @EAW
Conveniently @mont29, @georgK posted #81962 (Library Override crash: make armature local) 11 minutes before this task with clear steps to trigger this crash. ;)
As this task is confirm and claimed already, I will merge #81962 into this one.
Here is my stack trace:
{F9035951}
Added subscriber: @lichtwerk
Unfortunately, following the steps above still cause a crash in a
f73dad211bbuild on my machine.Debug build states:
@lichtwerk your files crashed Blender if I clicked the Armature object in the Outliner prior to using make local. There is no problem using make local on the object data-block, the armature data-block is the one I can't make local (unless I use the workaround).
Ah, OK, get it now as well (I am on something completely different atm., can check later maybe, bit surprised since the armature is already selected and active? - what does the click in the Outliner do here to prepare the crash?)
Can you guys still confirm that with current master? I really cannot reproduce here...
This issue was referenced by
4b7abde11dChanged status from 'Confirmed' to: 'Resolved'
With the files from #81962 (Library Override crash: make armature local) I still can, yes.
main.blend@mont29 I just built and tested with Blender 2.92.0, Commit date: 2020-10-26 08:17, Hash
cd16a5cea8.It still crashes for me with the same stack trace.
blender.crash.txt
OK, now it's gone, thx!
Rebuilding with your new patch @mont29
Confirming that it is fixed with 2c024bd335! 👍
Changed status from 'Resolved' to: 'Confirmed'
Re-opening as Studio here is still experiencing that same crash once in a while, grrrrrrr...
For the record, still unable to reproduce the sudio-reported crashes here...
Changed status from 'Confirmed' to: 'Resolved'
This seems to have been definitively fixed by
db18ba07b5.