UV Editing crash #90620

New Issue

Steven · 2021-08-12T01:04:06+02:00

Steven commented

2021-08-12 01:04:06 +02:00

System Information
Operating system: Windows 10
Graphics card: GeForce GTX 1060 6 GB

Blender Version 2.93

Short description of error
When I try to click on mesh named "Ryujo", then select the UV editing tab, blender crashes. The rest of the meshes work fine going into UV edit mode. So I believe the UV error is there, but I can't even go to fix it.

Exact steps for others to reproduce the error
Select mesh named "Ryujo", then click the UV Editing tab

Test File:
#90620.blend

**System Information** Operating system: Windows 10 Graphics card: GeForce GTX 1060 6 GB **Blender Version** 2.93 **Short description of error** When I try to click on mesh named "Ryujo", then select the UV editing tab, blender crashes. The rest of the meshes work fine going into UV edit mode. So I believe the UV error is there, but I can't even go to fix it. **Exact steps for others to reproduce the error** Select mesh named "Ryujo", then click the UV Editing tab Test File: [#90620.blend](https://archive.blender.org/developer/F10278208/T90620.blend)

Steven commented

2021-08-12 01:04:06 +02:00

Added subscriber: @SteelShadow104

Pratik Borhade commented

2021-08-12 06:58:56 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2021-08-12 07:15:37 +02:00

Thanks for the report. Please report the other issue separately. (FBX export error)

Crash happens here in VCRUNTIME140.dll when tab is switched to UV editing.

Get following stack trace on debug build:

vcruntime140d.dll!00007ffed9ea13d3()	Unknown
	blender.exe!CustomData_to_bmesh_block(const CustomData * source, CustomData * dest, int src_index, void * * dest_block, bool use_default_init) Line 4150	C
 	blender.exe!BM_mesh_bm_from_me(BMesh * bm, const Mesh * me, const BMeshFromMeshParams * params) Line 453	C
 	blender.exe!BKE_mesh_to_bmesh_ex(const Mesh * me, const BMeshCreateParams * create_params, const BMeshFromMeshParams * convert_params) Line 1099	C
 	blender.exe!BKE_mesh_to_bmesh(Mesh * me, Object * ob, const bool add_key_index, const BMeshCreateParams * params) Line 1115	C
 	blender.exe!EDBM_mesh_make(Object * ob, const int select_mode, const bool add_key_index) Line 299	C
 	blender.exe!ED_object_editmode_enter_ex(Main * bmain, Scene * scene, Object * ob, int flag) Line 795	C
 	blender.exe!editmode_toggle_exec(bContext * C, wmOperator * op) Line 887	C
 	blender.exe!wm_operator_invoke(bContext * C, wmOperatorType * ot, wmEvent * event, PointerRNA * properties, ReportList * reports, const bool poll_only, bool use_last_properties) Line 1363	C
 	blender.exe!wm_operator_call_internal(bContext * C, wmOperatorType * ot, PointerRNA * properties, ReportList * reports, const short context, const bool poll_only, wmEvent * event) Line 1558	C
 	blender.exe!WM_operator_name_call_ptr(bContext * C, wmOperatorType * ot, short context, PointerRNA * properties) Line 1607	C
 	blender.exe!ED_object_mode_set_ex(bContext * C, eObjectMode mode, bool use_undo, ReportList * reports) Line 228	C
 	blender.exe!ED_object_mode_set(bContext * C, eObjectMode mode) Line 244	C
 	blender.exe!ED_workspace_change(WorkSpace * workspace_new, bContext * C, wmWindowManager * wm, wmWindow * win) Line 160	C
 	blender.exe!WM_window_set_active_workspace(bContext * C, wmWindow * win, WorkSpace * workspace) Line 2350	C
 	blender.exe!wm_event_do_notifiers(bContext * C) Line 472	C
 	blender.exe!WM_main(bContext * C) Line 654	C
 	blender.exe!main(int argc, const unsigned char * * UNUSED_argv_c) Line 562	C

System Information

Operating system : Windows-10-10.0.18362-SP0 64 Bits
Graphics card : AMD Radeon(TM) 535 ATI Technologies .```

Thanks for the report. Please report the other issue separately. (FBX export error) Crash happens here in `VCRUNTIME140.dll` when tab is switched to UV editing. Get following stack trace on debug build: ```lines vcruntime140d.dll!00007ffed9ea13d3() Unknown blender.exe!CustomData_to_bmesh_block(const CustomData * source, CustomData * dest, int src_index, void * * dest_block, bool use_default_init) Line 4150 C blender.exe!BM_mesh_bm_from_me(BMesh * bm, const Mesh * me, const BMeshFromMeshParams * params) Line 453 C blender.exe!BKE_mesh_to_bmesh_ex(const Mesh * me, const BMeshCreateParams * create_params, const BMeshFromMeshParams * convert_params) Line 1099 C blender.exe!BKE_mesh_to_bmesh(Mesh * me, Object * ob, const bool add_key_index, const BMeshCreateParams * params) Line 1115 C blender.exe!EDBM_mesh_make(Object * ob, const int select_mode, const bool add_key_index) Line 299 C blender.exe!ED_object_editmode_enter_ex(Main * bmain, Scene * scene, Object * ob, int flag) Line 795 C blender.exe!editmode_toggle_exec(bContext * C, wmOperator * op) Line 887 C blender.exe!wm_operator_invoke(bContext * C, wmOperatorType * ot, wmEvent * event, PointerRNA * properties, ReportList * reports, const bool poll_only, bool use_last_properties) Line 1363 C blender.exe!wm_operator_call_internal(bContext * C, wmOperatorType * ot, PointerRNA * properties, ReportList * reports, const short context, const bool poll_only, wmEvent * event) Line 1558 C blender.exe!WM_operator_name_call_ptr(bContext * C, wmOperatorType * ot, short context, PointerRNA * properties) Line 1607 C blender.exe!ED_object_mode_set_ex(bContext * C, eObjectMode mode, bool use_undo, ReportList * reports) Line 228 C blender.exe!ED_object_mode_set(bContext * C, eObjectMode mode) Line 244 C blender.exe!ED_workspace_change(WorkSpace * workspace_new, bContext * C, wmWindowManager * wm, wmWindow * win) Line 160 C blender.exe!WM_window_set_active_workspace(bContext * C, wmWindow * win, WorkSpace * workspace) Line 2350 C blender.exe!wm_event_do_notifiers(bContext * C) Line 472 C blender.exe!WM_main(bContext * C) Line 654 C blender.exe!main(int argc, const unsigned char * * UNUSED_argv_c) Line 562 C ``` --- **System Information** ```version: 3.0.0, rB45d100208e8fc07e65d4cad303fa353e85bf8747 Operating system : Windows-10-10.0.18362-SP0 64 Bits Graphics card : AMD Radeon(TM) 535 ATI Technologies .```

Pratik Borhade changed title from ~~Exporting .fbx error and UV Editing crash~~ to UV Editing crash

2021-08-12 07:17:05 +02:00

Philipp Oeser commented

2021-08-12 09:16:51 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2021-08-12 09:16:51 +02:00

This is probably related to #79775 (Something in Blender can generate invalid (Nan) values in UVMaps)
Good news is that since b21db5e698 (so in 3.0 -- and soon in 2.93 LTS) these issues should be gone (hopefully), meaning the mesh corruptions should not be happening (but this does not mean already corrupt meshes are corrected automatically).
Interestingly, bpy.context.active_object.data.validate(verbose=True) crashes here [this should not be the case, will have a look]

This is probably related to #79775 (Something in Blender can generate invalid (Nan) values in UVMaps) Good news is that since b21db5e698 (so in 3.0 -- and soon in 2.93 LTS) these issues should be gone (hopefully), meaning the mesh corruptions should not be happening (but this does not mean already corrupt meshes are corrected automatically). Interestingly, `bpy.context.active_object.data.validate(verbose=True)` crashes here [this should not be the case, will have a look]

Philipp Oeser commented

2021-08-12 09:23:33 +02:00

Forgot to say: workaround is to delete the UVMap and redo that from scratch.

Forgot to say: workaround is to delete the `UVMap` and redo that from scratch.

Philipp Oeser commented

2021-08-12 09:35:13 +02:00

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

Philipp Oeser commented

2021-08-12 09:35:13 +02:00

Added subscriber: @mont29

Philipp Oeser commented

2021-08-12 09:35:13 +02:00

@mont29: not sure if we had this case before (maybe something went wrong when saving?), but in this file, the MLoopUV CustomDataLayer has no data at all (it is NULL).

This is why mesh.validate also crashes:

1   is_finite_v2                     math_vector.c   395  0x10a5f9d1 
2   layerValidate_mloopuv            customdata.c    1005 0x3bde458  
3   CustomData_layer_validate        customdata.c    4462 0x3be8786  
4   mesh_validate_customdata         mesh_validate.c 985  0x3786368  
5   BKE_mesh_validate_all_customdata mesh_validate.c 1027 0x37865ed  
6   BKE_mesh_validate                mesh_validate.c 1078 0x3786957  
7   Mesh_validate_call               rna_mesh_gen.c  7031 0x46af156

Not sure what the best way to handle do_fixes in that case, but assume blender should not crash?
Or is this in the category of mesh corruption (and thus not considered a bug)?

@SteelShadow104 : got an idea why the UVs could be corrupted? was this mesh modeled in blender? or imported (which importer Addon)?

@mont29: not sure if we had this case before (maybe something went wrong when saving?), but in this file, the `MLoopUV` `CustomDataLayer` has no data **at all** (it is NULL). This is why mesh.validate also crashes: ``` 1 is_finite_v2 math_vector.c 395 0x10a5f9d1 2 layerValidate_mloopuv customdata.c 1005 0x3bde458 3 CustomData_layer_validate customdata.c 4462 0x3be8786 4 mesh_validate_customdata mesh_validate.c 985 0x3786368 5 BKE_mesh_validate_all_customdata mesh_validate.c 1027 0x37865ed 6 BKE_mesh_validate mesh_validate.c 1078 0x3786957 7 Mesh_validate_call rna_mesh_gen.c 7031 0x46af156 ``` Not sure what the best way to handle `do_fixes` in that case, but assume blender should not crash? Or is this in the category of mesh corruption (and thus not considered a bug)? @SteelShadow104 : got an idea why the UVs could be corrupted? was this mesh modeled in blender? or imported (which importer Addon)?

Steven commented

2021-08-14 16:07:02 +02:00

I downloaded the model and textures from a website and edited the mesh. My thought is that it could be because I separated parts of the mesh, so it might have gaps in the UV mapping?

blender-admin commented

2022-07-21 05:15:38 +02:00

This issue was referenced by c171e8b95c

This issue was referenced by c171e8b95c0035eb92d2dcec6e9d82e094954d84

Omar Emara commented

2022-07-21 11:24:24 +02:00

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

Omar Emara closed this issue

2022-07-21 11:24:24 +02:00

Omar Emara commented

2022-07-21 11:27:44 +02:00

Added subscribers: @Chris_Blackbourn, @OmarEmaraDev

Omar Emara commented

2022-07-21 11:27:44 +02:00

@Chris_Blackbourn Would D15489 be a possible patch for #88449?

@Chris_Blackbourn Would [D15489](https://archive.blender.org/developer/D15489) be a possible patch for #88449?

Chris Blackbourn commented

2022-07-21 13:11:08 +02:00

In #90620#1393549, @OmarEmaraDev wrote:
@Chris_Blackbourn Would D15489 be a possible patch for #88449?

I just tried the file on Blender 2.9.3, and the workaround is still available, once the file has loaded, just delete the UV map and recreate it.

Maybe lets wait until we have a live crash report on 2.9.3 and then we have this patch ( c171e8b95c and dd158f1cab ) if we need it?

> In #90620#1393549, @OmarEmaraDev wrote: > @Chris_Blackbourn Would [D15489](https://archive.blender.org/developer/D15489) be a possible patch for #88449? I just tried the file on Blender 2.9.3, and the workaround is still available, once the file has loaded, just delete the UV map and recreate it. Maybe lets wait until we have a live crash report on 2.9.3 and then we have this patch ( c171e8b95c0 and dd158f1caba ) if we need it?

Omar Emara commented

2022-07-21 13:16:54 +02:00

Sure, I am not involved with LTS myself, was just asking.

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

UV Editing crash #90620