Regression: Mesh Symmetry + Skin Modifier, Skin Resize Cancel causes Crash #107020

Closed
opened 2023-04-17 02:06:00 +02:00 by Felix · 3 comments

System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 960/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 531.41

Blender Version
Broken: version: 3.6.0 Alpha, branch: main, commit date: 2023-04-15 01:59, hash: b601ae87d064
Broken: version: 3.5.0, branch: blender-v3.5-release, commit date: 2023-03-29 02:56, hash: 1be25cfff18b
Worked: Tested 2.90 only

Apparently caused by 3b761901b6

Short description of error
Using skin resize on a vertex with mesh symmetry enabled and then cancelling the operation will cause a crash if any modifier property has changed OR is cancelled repeatedly 1-20 times.

Exact steps for others to reproduce the error

  1. Open "MeshSym_SkinModifier_Crash.blend"
  2. You should already be in Edit Mode, Mesh Symmetry X enabled, with a vertex selected on a 3 vertex mesh.
  3. Call the skin resize operator (Ctrl + A), increase size (mouse move), then cancel it (Escape) 1-20 times
    OR
  4. Modify any modifier property (Branch Smoothing / Symmetry / Smooth Shading)
  5. Call the skin resize operator and cancel it.

I have included .mp4s for 2.90 behavior, causing the crash with repeated cancels and property change and a stack trace.

**System Information** Operating system: Windows-10-10.0.19044-SP0 64 Bits Graphics card: NVIDIA GeForce GTX 960/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 531.41 **Blender Version** Broken: version: 3.6.0 Alpha, branch: main, commit date: 2023-04-15 01:59, hash: `b601ae87d064` Broken: version: 3.5.0, branch: blender-v3.5-release, commit date: 2023-03-29 02:56, hash: `1be25cfff18b` Worked: Tested 2.90 only Apparently caused by 3b761901b6d6d5c089a89d0df9d8d12fd7f8e368 **Short description of error** Using skin resize on a vertex with mesh symmetry enabled and then cancelling the operation will cause a crash if any modifier property has changed OR is cancelled repeatedly 1-20 times. **Exact steps for others to reproduce the error** 1. Open `"MeshSym_SkinModifier_Crash.blend"` 2. You should already be in `Edit Mode`, `Mesh Symmetry X` enabled, with a vertex selected on a 3 vertex mesh. 3. Call the `skin resize` operator (Ctrl + A), increase size (mouse move), then cancel it (Escape) 1-20 times OR 3. Modify any modifier property (Branch Smoothing / Symmetry / Smooth Shading) 4. Call the `skin resize` operator and cancel it. I have included .mp4s for 2.90 behavior, causing the crash with repeated cancels and property change and a stack trace.
Felix added the
Priority
Normal
Type
Report
Status
Needs Triage
labels 2023-04-17 02:06:01 +02:00
Member

Hi, thanks for the report. Can confirm the crash. Guess crash introduced between 3.4-3.5

Stack trace:
blender.exe         :0x00007FF710917CE0  transdata_restore_basic C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\transform\transform_generics.c:782
blender.exe         :0x00007FF7109173F0  restoreTransObjects C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\transform\transform_generics.c:836
blender.exe         :0x00007FF710908970  transformEnd C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\transform\transform.c:2071
blender.exe         :0x00007FF7108F9900  transform_modal C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\transform\transform_ops.c:424
blender.exe         :0x00007FF70E0CA480  wm_handler_operator_call C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:2461
blender.exe         :0x00007FF70E0CCDD0  wm_handlers_do_intern C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:3372
blender.exe         :0x00007FF70E0CB2A0  wm_handlers_do C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:3422
blender.exe         :0x00007FF70E0D84F0  wm_event_do_handlers C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:4044
blender.exe         :0x00007FF70E09E1E0  WM_main C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm.c:649
blender.exe         :0x00007FF70E094DF0  main C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\creator\creator.c:597
blender.exe         :0x00007FF711CE7B20  invoke_main D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:79
blender.exe         :0x00007FF711CE78D0  __scrt_common_main_seh D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288
blender.exe         :0x00007FF711CE78B0  __scrt_common_main D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:331
blender.exe         :0x00007FF711CE7BE0  mainCRTStartup D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_main.cpp:17
KERNEL32.DLL        :0x00007FF883775580  BaseThreadInitThunk
ntdll.dll           :0x00007FF883A84830  RtlUserThreadStart
Hi, thanks for the report. Can confirm the crash. Guess crash introduced between 3.4-3.5 ``` Stack trace: blender.exe :0x00007FF710917CE0 transdata_restore_basic C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\transform\transform_generics.c:782 blender.exe :0x00007FF7109173F0 restoreTransObjects C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\transform\transform_generics.c:836 blender.exe :0x00007FF710908970 transformEnd C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\transform\transform.c:2071 blender.exe :0x00007FF7108F9900 transform_modal C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\transform\transform_ops.c:424 blender.exe :0x00007FF70E0CA480 wm_handler_operator_call C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:2461 blender.exe :0x00007FF70E0CCDD0 wm_handlers_do_intern C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:3372 blender.exe :0x00007FF70E0CB2A0 wm_handlers_do C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:3422 blender.exe :0x00007FF70E0D84F0 wm_event_do_handlers C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:4044 blender.exe :0x00007FF70E09E1E0 WM_main C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm.c:649 blender.exe :0x00007FF70E094DF0 main C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\creator\creator.c:597 blender.exe :0x00007FF711CE7B20 invoke_main D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:79 blender.exe :0x00007FF711CE78D0 __scrt_common_main_seh D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288 blender.exe :0x00007FF711CE78B0 __scrt_common_main D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:331 blender.exe :0x00007FF711CE7BE0 mainCRTStartup D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_main.cpp:17 KERNEL32.DLL :0x00007FF883775580 BaseThreadInitThunk ntdll.dll :0x00007FF883A84830 RtlUserThreadStart ```
Pratik Borhade added
Module
Modeling
Priority
High
Status
Confirmed
and removed
Priority
Normal
Status
Needs Triage
labels 2023-04-17 06:38:01 +02:00
Member

Will bisect

Will bisect
Member

Apparently caused by 3b761901b6

CC @mano-wii

Apparently caused by 3b761901b6d6d5c089a89d0df9d8d12fd7f8e368 CC @mano-wii
Philipp Oeser changed title from Mesh Symmetry + Skin Modifier, Skin Resize Cancel causes Crash to Regression: Mesh Symmetry + Skin Modifier, Skin Resize Cancel causes Crash 2023-04-17 15:05:51 +02:00
Blender Bot added
Status
Resolved
and removed
Status
Confirmed
labels 2023-04-17 16:29:57 +02:00
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Reference: blender/blender#107020
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