Regression: Smoothing a Mesh in Edit Mode Causes Segmentation Fault
Closed, ResolvedPublicBUG
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Description

System Information
Operating system: Ubuntu 22.04 (Wayland)
Graphics card: Nvidia GeForce RTX 3060

Blender Version
Broken: 3.4.0 Beta bba6d2894290
Worked: 3.3
Caused by rB12becbf0dffe: Mesh: Move selection flags to generic attributes

Short description of error
I am trying to smooth the vertices in a mesh on a sculpted hand. When I switch to Edit Mode and choose Mesh -> Weights -> Smooth, the entire Blender program crashes, and the console says "segmentation fault (core dumped).

Exact steps for others to reproduce the error

Open attached file
Select the character's hand mesh and tab into Edit Mode.
Open search menu. Type smooth and select the option Mesh -> Weights -> Smooth. The program should crash.

T102318.blend1 MBDownload

Revisions and Commits

rB Blender
	D16406	rB871c4380c4b5 Fix T102318: crash smoothing vertex weights in editmode

Related Objects

Mentioned Here: rB12becbf0dffe: Mesh: Move selection flags to generic attributes
rBbba6d2894290: Fix T99641: Assert hit when splitting video sequencer area horizontally

Event Timeline

Brenden (bxbrenden) created this task.Nov 7 2022, 3:43 AM

Hi, thanks for the report. I can confirm the crash. I'll check

Stack trace:
blender.exe         :0x00007FF775EAACD0  blender::bke::NamedLegacyCustomDataProvider::try_get_for_read C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\attribute_access.cc:548
blender.exe         :0x00007FF775E838D0  blender::bke::attribute_accessor_functions::lookup<&`blender::bke::get_mesh_accessor_functions'::`2 C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\attribute_access_intern.hh:358
blender.exe         :0x00007FF775EA9540  blender::bke::AttributeAccessor::lookup C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\attribute_access.cc:797
blender.exe         :0x00007FF77674BDC0  vgroup_smooth_subset C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\object\object_vgroup.cc:1926
blender.exe         :0x00007FF776749480  vertex_group_smooth_exec C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\object\object_vgroup.cc:3609
blender.exe         :0x00007FF77601F810  wm_operator_invoke C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:1455
blender.exe         :0x00007FF77601EEB0  wm_operator_call_internal C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:1652
blender.exe         :0x00007FF776021E10  WM_operator_name_call_ptr_with_depends_on_cursor C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:1891
blender.exe         :0x00007FF776916390  menu_search_exec_fn C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\interface\interface_template_search_menu.cc:956
blender.exe         :0x00007FF7768E8C90  ui_apply_but_funcs_after C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\interface\interface_handlers.c:1038
blender.exe         :0x00007FF7768F80B0  ui_popup_handler C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\interface\interface_handlers.c:11494
blender.exe         :0x00007FF77601E330  wm_handlers_do_intern C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:3217
blender.exe         :0x00007FF77601D750  wm_handlers_do C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:3337
blender.exe         :0x00007FF776023A80  wm_event_do_handlers C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:3928
blender.exe         :0x00007FF776009D60  WM_main C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm.c:643
blender.exe         :0x00007FF775CF6BA0  main C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\creator\creator.c:580
blender.exe         :0x00007FF7772D17B4  __scrt_common_main_seh D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288
KERNEL32.DLL        :0x00007FF9E1BB54D0  BaseThreadInitThunk
ntdll.dll           :0x00007FF9E25C4830  RtlUserThreadStart

Pratik Borhade (PratikPB2123) updated the task description. (Show Details)Nov 7 2022, 5:04 AM