Regression : Wrong memory usage using object.to_mesh() #98237

New Issue

Julien Duroure · 2022-05-18T22:06:52+02:00

Julien Duroure commented

2022-05-18 22:06:52 +02:00

System Information
Operating system: Ubuntu

Blender Version
Broken: master / 3.2
Worked: 3.1

Short description of error

When calling object.to_mesh(), weird memory usage:

when closing blender, see "Error: Not freed memory blocks: 4294967295, total unfreed memory 17592186044416.000000 MB"
It makes glTF exporter crash

Exact steps for others to reproduce the error

Open blender in command line (to be able to see printed logs)
Delete all object
Create a Curve > Bezier
Open console
bpy.context.object.to_mesh()
Close Blender
See "Error: Not freed memory blocks: 4294967295, total unfreed memory 17592186044416.000000 MB"

About glTF exporter:
I think the issue is on core Blender side, because running exporter code from 3.2 with core Blender 3.1 --> No issue

**System Information** Operating system: Ubuntu **Blender Version** Broken: master / 3.2 Worked: 3.1 **Short description of error** When calling object.to_mesh(), weird memory usage: - when closing blender, see "Error: Not freed memory blocks: 4294967295, total unfreed memory 17592186044416.000000 MB" - It makes glTF exporter crash **Exact steps for others to reproduce the error** - Open blender in command line (to be able to see printed logs) - Delete all object - Create a Curve > Bezier - Open console - bpy.context.object.to_mesh() - Close Blender - See "Error: Not freed memory blocks: 4294967295, total unfreed memory 17592186044416.000000 MB" About glTF exporter: I think the issue is on core Blender side, because running exporter code from 3.2 with core Blender 3.1 --> No issue

Julien Duroure commented

2022-05-18 22:06:52 +02:00

Added subscriber: @JulienDuroure

Pratik Borhade commented

2022-05-19 07:26:30 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-05-19 07:26:30 +02:00

Thanks for the report. Can confirm the memory leak.
I also get crash when I run that command in lite build

Finding the commit which has introduced this.

blender.exe         :0x00007FF62C99E0E0  IDP_FreePropertyContent_ex C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\idprop.c:1057
blender.exe         :0x00007FF62C99F9F0  BKE_libblock_free_data C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\lib_id_delete.c:45
blender.exe         :0x00007FF62CA024B0  BKE_object_free_derived_caches C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\object.cc:1793
blender.exe         :0x00007FF62C9FD490  object_free_data C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\object.cc:277
blender.exe         :0x00007FF62C99F730  BKE_id_free_ex C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\lib_id_delete.c:133
blender.exe         :0x00007FF62CAF8F10  mesh_new_from_curve_type_object C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\mesh_convert.cc:1001
blender.exe         :0x00007FF62CAFA260  BKE_mesh_new_from_object C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\mesh_convert.cc:1113
blender.exe         :0x00007FF62CA06AD0  BKE_object_to_mesh C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\object.cc:5565
blender.exe         :0x00007FF62CF5CF20  Object_to_mesh_call C:\Users\Pratik\Desktop\BlenderOSP\2019_lite_ninja\source\blender\makesrna\intern\rna_object_gen.c:3584
blender.exe         :0x00007FF62CEB1580  RNA_function_call C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\makesrna\intern\rna_access.c:7377
blender.exe         :0x00007FF62CFDD430  pyrna_func_call C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\python\intern\bpy_rna.c:6321
python310.dll       :0x00007FFE790D9DD0  PyObject_MakeTpCall
python310.dll       :0x00007FFE791EF000  PyEval_GetFuncDesc
python310.dll       :0x00007FFE791E88F0  PyEval_EvalFrameDefault
python310.dll       :0x00007FFE791E88F0  PyEval_EvalFrameDefault
python310.dll       :0x00007FFE791E8680  PyEval_EvalCode
python310.dll       :0x00007FFE791D97E0  PyWarnings_Init
python310.dll       :0x00007FFE7911E1C0  PyCFunction_GetFlags
python310.dll       :0x00007FFE791E6D50  PyOS_URandomNonblock
python310.dll       :0x00007FFE791EF000  PyEval_GetFuncDesc
python310.dll       :0x00007FFE791E88F0  PyEval_EvalFrameDefault
python310.dll       :0x00007FFE791E88F0  PyEval_EvalFrameDefault
python310.dll       :0x00007FFE790DA280  PyFunction_Vectorcall
python310.dll       :0x00007FFE791E6D50  PyOS_URandomNonblock
python310.dll       :0x00007FFE791EF000  PyEval_GetFuncDesc
python310.dll       :0x00007FFE791E88F0  PyEval_EvalFrameDefault
python310.dll       :0x00007FFE791E88F0  PyEval_EvalFrameDefault
python310.dll       :0x00007FFE790DA280  PyFunction_Vectorcall
python310.dll       :0x00007FFE791E6D50  PyOS_URandomNonblock
python310.dll       :0x00007FFE791EF000  PyEval_GetFuncDesc
python310.dll       :0x00007FFE791E88F0  PyEval_EvalFrameDefault
python310.dll       :0x00007FFE791E88F0  PyEval_EvalFrameDefault
python310.dll       :0x00007FFE790DA280  PyFunction_Vectorcall
python310.dll       :0x00007FFE791E6D50  PyOS_URandomNonblock
python310.dll       :0x00007FFE791EF000  PyEval_GetFuncDesc
python310.dll       :0x00007FFE791E88F0  PyEval_EvalFrameDefault
python310.dll       :0x00007FFE791E88F0  PyEval_EvalFrameDefault
python310.dll       :0x00007FFE790DA280  PyFunction_Vectorcall
python310.dll       :0x00007FFE791E6D50  PyOS_URandomNonblock
python310.dll       :0x00007FFE791EF000  PyEval_GetFuncDesc
python310.dll       :0x00007FFE791E88F0  PyEval_EvalFrameDefault
python310.dll       :0x00007FFE791E88F0  PyEval_EvalFrameDefault
python310.dll       :0x00007FFE790DA280  PyFunction_Vectorcall
blender.exe         :0x00007FF62CFDDE50  bpy_class_call C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\python\intern\bpy_rna.c:8613
blender.exe         :0x00007FF62CEECAC0  rna_operator_execute_cb C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\makesrna\intern\rna_wm.c:1257
blender.exe         :0x00007FF62C8E46A0  wm_operator_invoke C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.c:1402
blender.exe         :0x00007FF62C8E2030  wm_handler_operator_call C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.c:2424
blender.exe         :0x00007FF62C8E3A50  wm_handlers_do_keymap_with_keymap_handler C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.c:2819
blender.exe         :0x00007FF62C8E31F0  wm_handlers_do_intern C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.c:3139
blender.exe         :0x00007FF62C8E2650  wm_handlers_do C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.c:3282
blender.exe         :0x00007FF62C8DF250  wm_event_do_handlers C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.c:3923
blender.exe         :0x00007FF62C8C9A40  WM_main C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm.c:626
blender.exe         :0x00007FF62C8C51C0  main C:\Users\Pratik\Desktop\BlenderOSP\blender\source\creator\creator.c:552
blender.exe         :0x00007FF62DA02174  __scrt_common_main_seh d:\a01\_work\12\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288
KERNEL32.DLL        :0x00007FFEE90E7020  BaseThreadInitThunk
ntdll.dll           :0x00007FFEEA542630  RtlUserThreadStart```

Thanks for the report. Can confirm the memory leak. I also get crash when I run that command in lite build Finding the commit which has introduced this. ```lines=10 blender.exe :0x00007FF62C99E0E0 IDP_FreePropertyContent_ex C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\idprop.c:1057 blender.exe :0x00007FF62C99F9F0 BKE_libblock_free_data C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\lib_id_delete.c:45 blender.exe :0x00007FF62CA024B0 BKE_object_free_derived_caches C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\object.cc:1793 blender.exe :0x00007FF62C9FD490 object_free_data C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\object.cc:277 blender.exe :0x00007FF62C99F730 BKE_id_free_ex C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\lib_id_delete.c:133 blender.exe :0x00007FF62CAF8F10 mesh_new_from_curve_type_object C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\mesh_convert.cc:1001 blender.exe :0x00007FF62CAFA260 BKE_mesh_new_from_object C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\mesh_convert.cc:1113 blender.exe :0x00007FF62CA06AD0 BKE_object_to_mesh C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\object.cc:5565 blender.exe :0x00007FF62CF5CF20 Object_to_mesh_call C:\Users\Pratik\Desktop\BlenderOSP\2019_lite_ninja\source\blender\makesrna\intern\rna_object_gen.c:3584 blender.exe :0x00007FF62CEB1580 RNA_function_call C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\makesrna\intern\rna_access.c:7377 blender.exe :0x00007FF62CFDD430 pyrna_func_call C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\python\intern\bpy_rna.c:6321 python310.dll :0x00007FFE790D9DD0 PyObject_MakeTpCall python310.dll :0x00007FFE791EF000 PyEval_GetFuncDesc python310.dll :0x00007FFE791E88F0 PyEval_EvalFrameDefault python310.dll :0x00007FFE791E88F0 PyEval_EvalFrameDefault python310.dll :0x00007FFE791E8680 PyEval_EvalCode python310.dll :0x00007FFE791D97E0 PyWarnings_Init python310.dll :0x00007FFE7911E1C0 PyCFunction_GetFlags python310.dll :0x00007FFE791E6D50 PyOS_URandomNonblock python310.dll :0x00007FFE791EF000 PyEval_GetFuncDesc python310.dll :0x00007FFE791E88F0 PyEval_EvalFrameDefault python310.dll :0x00007FFE791E88F0 PyEval_EvalFrameDefault python310.dll :0x00007FFE790DA280 PyFunction_Vectorcall python310.dll :0x00007FFE791E6D50 PyOS_URandomNonblock python310.dll :0x00007FFE791EF000 PyEval_GetFuncDesc python310.dll :0x00007FFE791E88F0 PyEval_EvalFrameDefault python310.dll :0x00007FFE791E88F0 PyEval_EvalFrameDefault python310.dll :0x00007FFE790DA280 PyFunction_Vectorcall python310.dll :0x00007FFE791E6D50 PyOS_URandomNonblock python310.dll :0x00007FFE791EF000 PyEval_GetFuncDesc python310.dll :0x00007FFE791E88F0 PyEval_EvalFrameDefault python310.dll :0x00007FFE791E88F0 PyEval_EvalFrameDefault python310.dll :0x00007FFE790DA280 PyFunction_Vectorcall python310.dll :0x00007FFE791E6D50 PyOS_URandomNonblock python310.dll :0x00007FFE791EF000 PyEval_GetFuncDesc python310.dll :0x00007FFE791E88F0 PyEval_EvalFrameDefault python310.dll :0x00007FFE791E88F0 PyEval_EvalFrameDefault python310.dll :0x00007FFE790DA280 PyFunction_Vectorcall python310.dll :0x00007FFE791E6D50 PyOS_URandomNonblock python310.dll :0x00007FFE791EF000 PyEval_GetFuncDesc python310.dll :0x00007FFE791E88F0 PyEval_EvalFrameDefault python310.dll :0x00007FFE791E88F0 PyEval_EvalFrameDefault python310.dll :0x00007FFE790DA280 PyFunction_Vectorcall blender.exe :0x00007FF62CFDDE50 bpy_class_call C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\python\intern\bpy_rna.c:8613 blender.exe :0x00007FF62CEECAC0 rna_operator_execute_cb C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\makesrna\intern\rna_wm.c:1257 blender.exe :0x00007FF62C8E46A0 wm_operator_invoke C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.c:1402 blender.exe :0x00007FF62C8E2030 wm_handler_operator_call C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.c:2424 blender.exe :0x00007FF62C8E3A50 wm_handlers_do_keymap_with_keymap_handler C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.c:2819 blender.exe :0x00007FF62C8E31F0 wm_handlers_do_intern C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.c:3139 blender.exe :0x00007FF62C8E2650 wm_handlers_do C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.c:3282 blender.exe :0x00007FF62C8DF250 wm_event_do_handlers C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_event_system.c:3923 blender.exe :0x00007FF62C8C9A40 WM_main C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm.c:626 blender.exe :0x00007FF62C8C51C0 main C:\Users\Pratik\Desktop\BlenderOSP\blender\source\creator\creator.c:552 blender.exe :0x00007FF62DA02174 __scrt_common_main_seh d:\a01\_work\12\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288 KERNEL32.DLL :0x00007FFEE90E7020 BaseThreadInitThunk ntdll.dll :0x00007FFEEA542630 RtlUserThreadStart```

Pratik Borhade commented

2022-05-19 07:27:05 +02:00

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

Pratik Borhade commented

2022-05-19 09:46:47 +02:00

Added subscriber: @HooglyBoogly

Pratik Borhade commented

2022-05-19 09:46:47 +02:00

Bisecting points me to a7c65ef4cb
@HooglyBoogly , can you look at this report?

Bisecting points me to a7c65ef4cb @HooglyBoogly , can you look at this report?

Hans Goudey self-assigned this 2022-05-19 10:47:05 +02:00

Hans Goudey commented

2022-05-19 10:47:05 +02:00

This mesh_new_from_curve_type_object area is pretty awful, but I think this bug is just about finding the right situations to free original and evaluated data, the fix shouldn't be too bad.

This `mesh_new_from_curve_type_object` area is pretty awful, but I think this bug is just about finding the right situations to free original and evaluated data, the fix shouldn't be too bad.

blender-admin commented

2022-05-19 11:10:17 +02:00

This issue was referenced by c88de1594f

This issue was referenced by c88de1594ff35487259022223499b390fc4ad9b2

Hans Goudey commented

2022-05-19 11:10:39 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Hans Goudey closed this issue

2022-05-19 11:10:39 +02:00

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Regression : Wrong memory usage using object.to_mesh() #98237