Segfault when applying modifier to object copy from python #82555

New Issue

Josef Vanzura · 2020-11-10T01:05:15+01:00

Josef Vanzura commented

2020-11-10 01:05:15 +01:00

System Information
Operating system: Ubuntu
Graphics card: not relevant

Blender Version
Broken: i tried 2.83.5, 2.83.8, 2.90.1 and 2.92alpha
Worked: 2.81

Short description of error
Crash when trying to apply modifier to mesh

Exact steps for others to reproduce the error

Open blender with default scene.
Add modifier to Cube (tested with bevel, subsurf)
Run this script:

o = bpy.data.objects['Cube']
copy =  o.copy()
mcopy = copy.to_mesh(preserve_all_data_layers=True).copy()
copy.data = mcopy
bpy.context.collection.objects.link(copy)
bpy.context.view_layer.objects.active = copy
for m in copy.modifiers:
    bpy.ops.object.modifier_apply(modifier=m.name)

Crash

**System Information** Operating system: Ubuntu Graphics card: not relevant **Blender Version** Broken: i tried 2.83.5, 2.83.8, 2.90.1 and 2.92alpha Worked: 2.81 **Short description of error** Crash when trying to apply modifier to mesh **Exact steps for others to reproduce the error** 1. Open blender with default scene. 2. Add <you favourite> modifier to Cube (tested with bevel, subsurf) 3. Run this script: ``` o = bpy.data.objects['Cube'] copy = o.copy() mcopy = copy.to_mesh(preserve_all_data_layers=True).copy() copy.data = mcopy bpy.context.collection.objects.link(copy) bpy.context.view_layer.objects.active = copy for m in copy.modifiers: bpy.ops.object.modifier_apply(modifier=m.name) ``` 4. Crash

Josef Vanzura commented

2020-11-10 01:05:15 +01:00

Added subscriber: @gindar

Josef Vanzura commented

2020-11-10 01:05:58 +01:00

Here is backtrace (whole crash originally happend in my addon - io_scene_model ...)

# Blender 2.92.0, Commit date: 2020-11-08 15:12, Hash 39012146e142
bpy.ops.object.modifier_apply(modifier="Bevel")  # Operator

# backtrace
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(BLI_system_backtrace+0x20) [0x8500110]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe68d0a]
/lib/x86_64-linux-gnu/libc.so.6(+0x41950) [0x7f8379919950]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(BKE_main_id_tag_listbase+0x30) [0xeb1770]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(BKE_main_id_tag_all+0x52) [0xeb1802]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(BKE_id_delete+0x18) [0xeb3d98]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0x15c9340]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(RNA_function_call+0x12) [0x157d5e2]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0x16a73ff]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyObject_FastCallKeywords+0xd7) [0x71923e7]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5ce93]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyEval_EvalFrameDefault+0x67d1) [0xe63a41]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5bc4b]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5cee5]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyEval_EvalFrameDefault+0x1cb1) [0xe5ef21]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5bc4b]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5cee5]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyEval_EvalFrameDefault+0x4344) [0xe615b4]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5bc4b]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5cee5]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyEval_EvalFrameDefault+0x4344) [0xe615b4]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5bc4b]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5cee5]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyEval_EvalFrameDefault+0x1cb1) [0xe5ef21]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5bc4b]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5cee5]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyEval_EvalFrameDefault+0x1cb1) [0xe5ef21]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyEval_EvalCodeWithName+0x92d) [0x723319d]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyFunction_FastCallDict+0x12f) [0x7191b0f]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyObject_Call_Prepend+0xcd) [0x7192d8d]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(PyObject_Call+0x75) [0x7193f85]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyEval_EvalFrameDefault+0x4e5c) [0xe620cc]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5bc4b]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyFunction_FastCallDict+0x2c8) [0x7191ca8]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0x16a806d]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0x1676715]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0x11e1fcf]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0x11e52f8]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0x11e570c]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(wm_event_do_handlers+0x416) [0x11e5ef6]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(WM_main+0x20) [0x11dcc80]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender(main+0x31e) [0xda372e]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf2) [0x7f8379900cb2]
/home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe656f3]

# Python backtrace
  File "/home/gindar/.config/blender/2.92/scripts/addons/io_scene_model/__init__.py", line 562 in import_data
  File "/home/gindar/.config/blender/2.92/scripts/addons/io_scene_model/__init__.py", line 1124 in export_mesh
  File "/home/gindar/.config/blender/2.92/scripts/addons/io_scene_model/utils.py", line 113 in do_dict_export
  File "/home/gindar/.config/blender/2.92/scripts/addons/io_scene_model/__init__.py", line 952 in do_export
  File "/home/gindar/.config/blender/2.92/scripts/addons/io_scene_model/__init__.py", line 860 in export
  File "/home/gindar/.config/blender/2.92/scripts/addons/io_scene_model/__init__.py", line 780 in save
  File "/home/gindar/.config/blender/2.92/scripts/addons/io_scene_model/__init__.py", line 788 in execute

Here is backtrace (whole crash originally happend in my addon - io_scene_model ...) ``` # Blender 2.92.0, Commit date: 2020-11-08 15:12, Hash 39012146e142 bpy.ops.object.modifier_apply(modifier="Bevel") # Operator # backtrace /home/gindar/blender-2.92.0-39012146e142-linux64/blender(BLI_system_backtrace+0x20) [0x8500110] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe68d0a] /lib/x86_64-linux-gnu/libc.so.6(+0x41950) [0x7f8379919950] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(BKE_main_id_tag_listbase+0x30) [0xeb1770] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(BKE_main_id_tag_all+0x52) [0xeb1802] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(BKE_id_delete+0x18) [0xeb3d98] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0x15c9340] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(RNA_function_call+0x12) [0x157d5e2] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0x16a73ff] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyObject_FastCallKeywords+0xd7) [0x71923e7] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5ce93] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyEval_EvalFrameDefault+0x67d1) [0xe63a41] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5bc4b] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5cee5] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyEval_EvalFrameDefault+0x1cb1) [0xe5ef21] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5bc4b] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5cee5] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyEval_EvalFrameDefault+0x4344) [0xe615b4] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5bc4b] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5cee5] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyEval_EvalFrameDefault+0x4344) [0xe615b4] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5bc4b] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5cee5] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyEval_EvalFrameDefault+0x1cb1) [0xe5ef21] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5bc4b] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5cee5] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyEval_EvalFrameDefault+0x1cb1) [0xe5ef21] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyEval_EvalCodeWithName+0x92d) [0x723319d] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyFunction_FastCallDict+0x12f) [0x7191b0f] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyObject_Call_Prepend+0xcd) [0x7192d8d] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(PyObject_Call+0x75) [0x7193f85] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyEval_EvalFrameDefault+0x4e5c) [0xe620cc] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe5bc4b] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(_PyFunction_FastCallDict+0x2c8) [0x7191ca8] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0x16a806d] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0x1676715] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0x11e1fcf] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0x11e52f8] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0x11e570c] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(wm_event_do_handlers+0x416) [0x11e5ef6] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(WM_main+0x20) [0x11dcc80] /home/gindar/blender-2.92.0-39012146e142-linux64/blender(main+0x31e) [0xda372e] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf2) [0x7f8379900cb2] /home/gindar/blender-2.92.0-39012146e142-linux64/blender() [0xe656f3] # Python backtrace File "/home/gindar/.config/blender/2.92/scripts/addons/io_scene_model/__init__.py", line 562 in import_data File "/home/gindar/.config/blender/2.92/scripts/addons/io_scene_model/__init__.py", line 1124 in export_mesh File "/home/gindar/.config/blender/2.92/scripts/addons/io_scene_model/utils.py", line 113 in do_dict_export File "/home/gindar/.config/blender/2.92/scripts/addons/io_scene_model/__init__.py", line 952 in do_export File "/home/gindar/.config/blender/2.92/scripts/addons/io_scene_model/__init__.py", line 860 in export File "/home/gindar/.config/blender/2.92/scripts/addons/io_scene_model/__init__.py", line 780 in save File "/home/gindar/.config/blender/2.92/scripts/addons/io_scene_model/__init__.py", line 788 in execute ```

Josef Vanzura changed title from ~~Segfault when applying modifier from script~~ to Segfault when applying modifier on object copy from python

2020-11-10 01:07:19 +01:00

Josef Vanzura changed title from ~~Segfault when applying modifier on object copy from python~~ to Segfault when applying modifier to object copy from python

2020-11-10 01:07:46 +01:00

blender-admin commented

2020-11-10 07:38:26 +01:00

This issue was referenced by 8b59119e10

This issue was referenced by 8b59119e10211da4f9d1dd2aa95c3132cb65e609

blender-admin commented

2020-11-10 07:38:26 +01:00

This issue was referenced by 476a0d2311

This issue was referenced by 476a0d2311d530d9590cae807ee07fb98b11c6dd

Campbell Barton commented

2020-11-10 07:48:39 +01:00

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

Campbell Barton closed this issue

2020-11-10 07:48:39 +01:00

Campbell Barton self-assigned this 2020-11-10 07:48:39 +01:00

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Segfault when applying modifier to object copy from python #82555