bpy_prop_collection internal error #43332

New Issue

tamachan · 2015-01-20T17:32:52+01:00

tamachan commented

2015-01-20 17:32:52 +01:00

System Information
Win 8.1 (64 bit)

Blender Version
Broken: Blender 2.7 (32 bit)

Short description of error
80% fail, 20% success.
RuntimeError: bpy_prop_collection[index]: internal error, valid index 2 given 12 sized collection but value not found
Blender\2.73\scripts\addons\vrm.py, line 2611, in _doLighting

install vrm.py to addons.
open untitled.blend (or blender's default scene)
fill output's path in "Vector Rendering Method" panel in Render tab.
press "Render" button in VRM panel.
80% fail, 20% success.

Exact steps for others to reproduce the error
untitled.blend untitled.blend
vrm.py vrm.py

**System Information** Win 8.1 (64 bit) **Blender Version** Broken: Blender 2.7 (32 bit) **Short description of error** 80% fail, 20% success. RuntimeError: bpy_prop_collection[index]: internal error, valid index 2 given 12 sized collection but value not found Blender\2.73\scripts\addons\vrm.py, line 2611, in _doLighting 1. install vrm.py to addons. 2. open untitled.blend (or blender's default scene) 3. fill output's path in "Vector Rendering Method" panel in Render tab. 4. press "Render" button in VRM panel. 5. 80% fail, 20% success. **Exact steps for others to reproduce the error** untitled.blend [untitled.blend](https://archive.blender.org/developer/F138457/untitled.blend) vrm.py [vrm.py](https://archive.blender.org/developer/F138458/vrm.py)

tamachan commented

2015-01-20 17:32:52 +01:00

Changed status to: 'Open'

tamachan commented

2015-01-20 17:32:52 +01:00

Added subscriber: @tamachan

tamachan commented

2015-01-20 17:35:43 +01:00

If an error doesn't show, please retry from 2.

Bastien Montagne commented

2015-01-20 19:24:22 +01:00

Changed status from 'Open' to: 'Archived'

Bastien Montagne closed this issue

2015-01-20 19:24:22 +01:00

Bastien Montagne self-assigned this 2015-01-20 19:24:22 +01:00

Bastien Montagne commented

2015-01-20 19:24:22 +01:00

VRM addon is not distributed with blender, please do not report bugs about third party addons here.

tamachan commented

2015-01-20 21:58:15 +01:00

This bug is an internal error of blender. It isn't the add-on bug.

Bastien Montagne commented

2015-01-20 22:00:04 +01:00

In this case, please provide a simple, reproducible case that does not depend on the addon. If issue is internal to Blender, it should be easy to reproduce it with a few lines in a mere 'py' textblock.

tamachan commented

2015-01-21 13:09:59 +01:00

vrm.py The file which slimmed
This is the bug of the blender's memory manuplation.(I think in a buffer overrun of Blender) So a script won't be any more small. A failure probability went down to 20-30% by slimming of a script.

[vrm.py](https://archive.blender.org/developer/F138536/vrm.py) The file which slimmed This is the bug of the blender's memory manuplation.(I think in a buffer overrun of Blender) So a script won't be any more small. A failure probability went down to 20-30% by slimming of a script.

Bastien Montagne commented

2015-01-21 14:51:42 +01:00

Changed status from 'Archived' to: 'Open'

Bastien Montagne reopened this issue

2015-01-21 14:51:42 +01:00

Bastien Montagne commented

2015-01-21 14:51:42 +01:00

Uhhhh… Ok, could reproduce that (on the 17th attempt) on my win7 VM - tried over 30 times on linux with no issue.

Further more, I've had a similar issue with my 'preview object generation' script (asset-experiment branch), where it works perfectly on linux and throws odd absurd errors under WIndows.

I have the feeling there is something fishy going on either with the way our py code is compiled on windows, or (more likely ?) with our pre-compiled py libs for win. After all, we are not using 'official' py compiler here. :|

Uhhhh… Ok, could reproduce that (on the 17th attempt) on my win7 VM - tried over 30 times on linux with no issue. Further more, I've had a similar issue with my 'preview object generation' script (asset-experiment branch), where it works perfectly on linux and throws odd absurd errors under WIndows. I have the feeling there is something fishy going on either with the way our py code is compiled on windows, or (more likely ?) with our pre-compiled py libs for win. After all, we are not using 'official' py compiler here. :|

Bastien Montagne commented

2015-01-21 14:52:03 +01:00

Added subscribers: @ideasman42, @MartijnBerger

Bastien Montagne commented

2015-01-21 14:52:03 +01:00

Uhhhh… Ok, could reproduce that (on the 17th attempt) on my win7 VM - tried over 30 times on linux with no issue.

Further more, I've had a similar issue with my 'preview object generation' script (asset-experiment branch), where it works perfectly on linux and throws odd absurd errors under WIndows.

I have the feeling there is something fishy going on either with the way our py code is compiled on windows, or (more likely ?) with our pre-compiled py libs for win. After all, we are not using 'official' py compiler here. :|

Uhhhh… Ok, could reproduce that (on the 17th attempt) on my win7 VM - tried over 30 times on linux with no issue. Further more, I've had a similar issue with my 'preview object generation' script (asset-experiment branch), where it works perfectly on linux and throws odd absurd errors under WIndows. I have the feeling there is something fishy going on either with the way our py code is compiled on windows, or (more likely ?) with our pre-compiled py libs for win. After all, we are not using 'official' py compiler here. :|

Bastien Montagne removed their assignment 2015-01-21 14:52:25 +01:00

Bastien Montagne commented

2015-01-21 15:05:02 +01:00

Added subscriber: @mont29

Martijn Berger commented

2015-01-21 23:03:12 +01:00

@mont29 did you reproduce using 2.73a ?

@mont29 did you reproduce using 2.7**3**a ?

Bastien Montagne commented

2015-01-22 09:11:43 +01:00

@MartijnBerger no, using own build of latest master (with up-to-date svn repo and MSVC2013 express/CMake).

@tamachan which version of blender do you use exactly (please give us also the 'git hash' shown in start popup)?

@MartijnBerger no, using own build of latest master (with up-to-date svn repo and MSVC2013 express/CMake). @tamachan which version of blender do you use exactly (please give us also the 'git hash' shown in start popup)?

tamachan commented

2015-01-22 10:50:17 +01:00

git hash: b4d8fb5
date: 2015-01-07 13:17

git hash: b4d8fb5 date: 2015-01-07 13:17

tamachan commented

2015-01-31 12:42:14 +01:00

err.py

I debug my debug build by VC2013. ( git f7e8da6f5a5353c20a229e74d768384b5b1e5794 )

err.py@75

      for f in mesh.polygons:
        backface[f.index].value = 1 # !!!!!!!!!!exception here!!!!!!!!!!!
        #rlayer[f.index].value = 2

blender/makesrna/intern/rna_mesh_gen.c@6610

void MeshIntProperty_value_set(PointerRNA *ptr, int value)
{
	MIntProperty *data = (MIntProperty *)(ptr->data);
	data->i = value; // <--- 0xC0000005: Access violation reading location 0xfeeefeee.  ptr->data == 0xfeeefeee
}

http://en.wikipedia.org/wiki/Magic_number_(programming)#Magic_debug_values
FEEEFEEE "Fee fee", Used by Microsoft's debug HeapFree() to mark freed heap memory.

[err.py](https://archive.blender.org/developer/F140131/err.py) I debug my debug build by VC2013. ( git f7e8da6f5a5353c20a229e74d768384b5b1e5794 ) ``` err.py@75 for f in mesh.polygons: backface[f.index].value = 1 # !!!!!!!!!!exception here!!!!!!!!!!! #rlayer[f.index].value = 2 ``` ``` blender/makesrna/intern/rna_mesh_gen.c@6610 void MeshIntProperty_value_set(PointerRNA *ptr, int value) { MIntProperty *data = (MIntProperty *)(ptr->data); data->i = value; // <--- 0xC0000005: Access violation reading location 0xfeeefeee. ptr->data == 0xfeeefeee } ``` http://en.wikipedia.org/wiki/Magic_number_(programming)#Magic_debug_values FEEEFEEE "Fee fee", Used by Microsoft's debug HeapFree() to mark freed heap memory.

Julian Eisel commented

2015-03-08 23:09:30 +01:00

Added subscriber: @JulianEisel

Julian Eisel commented

2015-03-08 23:09:30 +01:00

@mont29, @MartijnBerger, Wazzup with this one? Any news?

blender-admin commented

2015-03-09 02:23:58 +01:00

This issue was referenced by blender/blender@a7855f81d4

This issue was referenced by blender/blender@a7855f81d43c4204f0470dcdee6f2ab5bc3f5e83

Campbell Barton commented

2015-03-09 02:26:12 +01:00

Changed status from 'Open' to: 'Resolved'

Campbell Barton closed this issue

2015-03-09 02:26:12 +01:00

Campbell Barton commented

2015-03-09 02:26:12 +01:00

Closed by commit blender/blender@a7855f81d4.

Campbell Barton commented

2015-03-09 02:28:31 +01:00

The access violation is likely caused by layer reallocation. This will fix it.

Unfortunately the RNA API is low-level enough that it wont track re-allocated memory.

    mesh.polygon_layers_int.new("rlayer")
    mesh.polygon_layers_int.new("glayer")
    mesh.polygon_layers_int.new("blayer")
    mesh.polygon_layers_int.new("alayer")

    backface = mesh.polygon_layers_int["backface"].data
    rlayer = mesh.polygon_layers_int["rlayer"].data
    glayer = mesh.polygon_layers_int["glayer"].data
    blayer = mesh.polygon_layers_int["blayer"].data
    alayer = mesh.polygon_layers_int["alayer"].data

The access violation is likely caused by layer reallocation. This will fix it. Unfortunately the RNA API is low-level enough that it wont track re-allocated memory. ``` mesh.polygon_layers_int.new("rlayer") mesh.polygon_layers_int.new("glayer") mesh.polygon_layers_int.new("blayer") mesh.polygon_layers_int.new("alayer") ``` ``` backface = mesh.polygon_layers_int["backface"].data rlayer = mesh.polygon_layers_int["rlayer"].data glayer = mesh.polygon_layers_int["glayer"].data blayer = mesh.polygon_layers_int["blayer"].data alayer = mesh.polygon_layers_int["alayer"].data

tamachan commented

2015-03-10 16:32:29 +01:00

I get is still the same error.

RuntimeError: bpy_prop_collection[index]: internal error, valid index 2 given 6 sized collection but value not found

Blender(Daily build x86 win): afa8a0a
Script: F138536

I get is still the same error. > RuntimeError: bpy_prop_collection[index]: internal error, valid index 2 given 6 sized collection but value not found Blender(Daily build x86 win): afa8a0a Script: [F138536](https://archive.blender.org/developer/F138536/vrm.py)

Campbell Barton commented

2015-03-11 04:43:49 +01:00

@tamachan, the attached script isnt grouping assignments as noted my my last pose - line 180-187.