Crash on calling bpy.ops.mesh.loopcut in python script #103710

New Issue

Sergey Trifonov · 2023-01-07T05:51:30+01:00

Sergey Trifonov commented

2023-01-07 05:51:30 +01:00

System Information
Operation system: macOS BigSur 11.6 (20G165)
Apple M1

Blender Version
Version 3.4.1 (3.4.1 2022-12-20)

Short description of error
Blender crashes in background mode when you are calling bpy.ops.mesh.loopcut with overridden context

Exact steps for others to reproduce the error
Run Blender from cli with args:
/path/to/bin --background --python bug.py
bug.py

**System Information** Operation system: macOS BigSur 11.6 (20G165) Apple M1 **Blender Version** Version 3.4.1 (3.4.1 2022-12-20) **Short description of error** Blender crashes in background mode when you are calling bpy.ops.mesh.loopcut with overridden context **Exact steps for others to reproduce the error** Run Blender from cli with args: /path/to/bin --background --python bug.py [bug.py](https://archive.blender.org/developer/F14130103/bug.py)

Sergey Trifonov commented

2023-01-07 05:51:30 +01:00

Added subscriber: @keepInDry

Pratik Borhade commented

2023-01-09 06:04:13 +01:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2023-01-09 06:04:13 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Pratik Borhade commented

2023-01-09 06:04:13 +01:00

Thanks for the report. Can confirm the crash

Stack trace:
blender.exe         :0x00007FF7CD0BF1C0  GPU_viewport C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\gpu\intern\gpu_state.cc:195
blender.exe         :0x00007FF7CC152AD0  wmViewport C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_subwindow.c:27
blender.exe         :0x00007FF7CCDE68F0  view3d_operator_needs_opengl C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\space_view3d\view3d_utils.c:181
blender.exe         :0x00007FF7CCB10420  loopcut_init C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\mesh\editmesh_loopcut.c:402
blender.exe         :0x00007FF7CC12F7F0  wm_operator_invoke C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:1486
blender.exe         :0x00007FF7CC12EE70  wm_operator_call_internal C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:1707
blender.exe         :0x00007FF7CC131B60  WM_operator_call_py C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:1782
blender.exe         :0x00007FF7CC875870  pyop_call C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\python\intern\bpy_operator.c:307
python310.dll       :0x00007FF814290130  PyCFunction_GetFlags
python310.dll       :0x00007FF81424BA20  PyObject_MakeTpCall
python310.dll       :0x00007FF814360A50  PyEval_GetFuncDesc
python310.dll       :0x00007FF81435A3A0  PyEval_EvalFrameDefault
python310.dll       :0x00007FF81435A3A0  PyEval_EvalFrameDefault
python310.dll       :0x00007FF81424BED0  PyFunction_Vectorcall
python310.dll       :0x00007FF81424B890  PyObject_FastCallDictTstate
python310.dll       :0x00007FF81424C0E0  PyObject_Call_Prepend
python310.dll       :0x00007FF8142B60A0  PyType_Ready
python310.dll       :0x00007FF81424BA20  PyObject_MakeTpCall
python310.dll       :0x00007FF814360A50  PyEval_GetFuncDesc
python310.dll       :0x00007FF81435A3A0  PyEval_EvalFrameDefault
python310.dll       :0x00007FF81435A3A0  PyEval_EvalFrameDefault
python310.dll       :0x00007FF81435A130  PyEval_EvalCode
python310.dll       :0x00007FF81434B280  PyWarnings_Init
python310.dll       :0x00007FF814290130  PyCFunction_GetFlags
python310.dll       :0x00007FF8143587F0  PyOS_URandomNonblock
python310.dll       :0x00007FF814360A50  PyEval_GetFuncDesc
python310.dll       :0x00007FF81435A3A0  PyEval_EvalFrameDefault
python310.dll       :0x00007FF81435A3A0  PyEval_EvalFrameDefault
python310.dll       :0x00007FF8143D2160  PyRun_FileExFlags
python310.dll       :0x00007FF8143D2160  PyRun_FileExFlags
python310.dll       :0x00007FF8143D1FC0  PyRun_StringFlags
blender.exe         :0x00007FF7CC85C5D0  python_script_exec C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\python\intern\bpy_interface_run.c:183
blender.exe         :0x00007FF7CC85C1A0  BPY_run_filepath C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\python\intern\bpy_interface_run.c:230
blender.exe         :0x00007FF7CC1172F0  arg_handle_python_file_run C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\creator\creator_args.c:1831
blender.exe         :0x00007FF7CD1D2120  BLI_args_parse C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\blenlib\intern\BLI_args.c:295
blender.exe         :0x00007FF7CC115240  main C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\creator\creator.c:557
blender.exe         :0x00007FF7CD32B3D4  __scrt_common_main_seh D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288
KERNEL32.DLL        :0x00007FF87B275590  BaseThreadInitThunk
ntdll.dll           :0x00007FF87C0C4830  RtlUserThreadStart```

Thanks for the report. Can confirm the crash ```lines=10 Stack trace: blender.exe :0x00007FF7CD0BF1C0 GPU_viewport C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\gpu\intern\gpu_state.cc:195 blender.exe :0x00007FF7CC152AD0 wmViewport C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_subwindow.c:27 blender.exe :0x00007FF7CCDE68F0 view3d_operator_needs_opengl C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\space_view3d\view3d_utils.c:181 blender.exe :0x00007FF7CCB10420 loopcut_init C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\editors\mesh\editmesh_loopcut.c:402 blender.exe :0x00007FF7CC12F7F0 wm_operator_invoke C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:1486 blender.exe :0x00007FF7CC12EE70 wm_operator_call_internal C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:1707 blender.exe :0x00007FF7CC131B60 WM_operator_call_py C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.cc:1782 blender.exe :0x00007FF7CC875870 pyop_call C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\python\intern\bpy_operator.c:307 python310.dll :0x00007FF814290130 PyCFunction_GetFlags python310.dll :0x00007FF81424BA20 PyObject_MakeTpCall python310.dll :0x00007FF814360A50 PyEval_GetFuncDesc python310.dll :0x00007FF81435A3A0 PyEval_EvalFrameDefault python310.dll :0x00007FF81435A3A0 PyEval_EvalFrameDefault python310.dll :0x00007FF81424BED0 PyFunction_Vectorcall python310.dll :0x00007FF81424B890 PyObject_FastCallDictTstate python310.dll :0x00007FF81424C0E0 PyObject_Call_Prepend python310.dll :0x00007FF8142B60A0 PyType_Ready python310.dll :0x00007FF81424BA20 PyObject_MakeTpCall python310.dll :0x00007FF814360A50 PyEval_GetFuncDesc python310.dll :0x00007FF81435A3A0 PyEval_EvalFrameDefault python310.dll :0x00007FF81435A3A0 PyEval_EvalFrameDefault python310.dll :0x00007FF81435A130 PyEval_EvalCode python310.dll :0x00007FF81434B280 PyWarnings_Init python310.dll :0x00007FF814290130 PyCFunction_GetFlags python310.dll :0x00007FF8143587F0 PyOS_URandomNonblock python310.dll :0x00007FF814360A50 PyEval_GetFuncDesc python310.dll :0x00007FF81435A3A0 PyEval_EvalFrameDefault python310.dll :0x00007FF81435A3A0 PyEval_EvalFrameDefault python310.dll :0x00007FF8143D2160 PyRun_FileExFlags python310.dll :0x00007FF8143D2160 PyRun_FileExFlags python310.dll :0x00007FF8143D1FC0 PyRun_StringFlags blender.exe :0x00007FF7CC85C5D0 python_script_exec C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\python\intern\bpy_interface_run.c:183 blender.exe :0x00007FF7CC85C1A0 BPY_run_filepath C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\python\intern\bpy_interface_run.c:230 blender.exe :0x00007FF7CC1172F0 arg_handle_python_file_run C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\creator\creator_args.c:1831 blender.exe :0x00007FF7CD1D2120 BLI_args_parse C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\blender\blenlib\intern\BLI_args.c:295 blender.exe :0x00007FF7CC115240 main C:\Users\prati\OneDrive\Desktop\BlenderOSP\blender\source\creator\creator.c:557 blender.exe :0x00007FF7CD32B3D4 __scrt_common_main_seh D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288 KERNEL32.DLL :0x00007FF87B275590 BaseThreadInitThunk ntdll.dll :0x00007FF87C0C4830 RtlUserThreadStart```

Philipp Oeser commented

2023-01-09 12:33:25 +01:00

Added subscribers: @mont29, @lichtwerk

Philipp Oeser commented

2023-01-09 12:33:25 +01:00

Changed status from 'Confirmed' to: 'Needs Developer To Reproduce'

Philipp Oeser commented

2023-01-09 12:33:25 +01:00

Probably the same as #50160 (loopcut_slide wmSubWindowScissorSet 0: doesn't exist)

In #50160#406927, @mont29 wrote:
This op expects a valid OpenGL context, which does not exists in background mode (or with blender built as a module)…

No bug here, background/module versions of Blender are supposed to be OpenGL-less.

This seems to be no bug, but will leave for module devs to put the final nail in the coffin (or to decide to hand this more gracefully in background mode).

Probably the same as #50160 (loopcut_slide wmSubWindowScissorSet 0: doesn't exist) > In #50160#406927, @mont29 wrote: > This op expects a valid OpenGL context, which does not exists in background mode (or with blender built as a module)… > > No bug here, background/module versions of Blender are supposed to be OpenGL-less. This seems to be no bug, but will leave for module devs to put the final nail in the coffin (or to decide to hand this more gracefully in background mode).

Germano Cavalcante commented

2023-01-09 13:58:19 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2023-01-09 13:58:19 +01:00

Reminds me of #84964 (Overriding context crashes when run from command line).
I don't think the drawing functions need to run in background mode in this case.

Reminds me of #84964 (Overriding context crashes when run from command line). I don't think the drawing functions need to run in background mode in this case.

Philipp Oeser removed the

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Crash on calling bpy.ops.mesh.loopcut in python script #103710