Crash: Adding UV's in edit-mode with linked duplicates #77359

New Issue

Adam · 2020-06-04T11:37:53+02:00

Adam commented

2020-06-04 11:37:53 +02:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 441.87

Blender Version
Broken: version: 2.83.0, branch: master, commit date: 2020-06-03 14:38, hash: 211b6c29f7
Happens in Blender 2.82a

Short description of error
Blender crashes when trying to unwrap using: U->Follow Active Quads
On instanced/linked object (Alt+D)
https://youtu.be/IwPARjhyfgA

Crash log:
FollowQuad-Crash.crash.txt

Exact steps for others to reproduce the error

Open this attached file
Add UV or hit U->Follow Active Quads.

add_uv_bug.blend

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 441.87 **Blender Version** Broken: version: 2.83.0, branch: master, commit date: 2020-06-03 14:38, hash: `211b6c29f7` Happens in Blender 2.82a **Short description of error** Blender crashes when trying to unwrap using: U->Follow Active Quads On instanced/linked object (Alt+D) https://youtu.be/IwPARjhyfgA Crash log: [FollowQuad-Crash.crash.txt](https://archive.blender.org/developer/F8578261/FollowQuad-Crash.crash.txt) **Exact steps for others to reproduce the error** - Open this attached file - Add UV or hit U->Follow Active Quads. [add_uv_bug.blend](https://archive.blender.org/developer/F8601872/add_uv_bug.blend)

Adam commented

2020-06-04 11:37:53 +02:00

Added subscriber: @50p

Chingiz Jumagulov commented

2020-06-04 11:51:23 +02:00

Added subscriber: @MeshVoid

Chingiz Jumagulov commented

2020-06-04 11:51:23 +02:00

Strange, works fine for me on Windows 10 64 bits here.

Alaska commented

2020-06-04 11:57:59 +02:00

Added subscriber: @Alaska

Alaska commented

2020-06-04 11:57:59 +02:00

Same here, no issues on Blender 2.83.0 with Linux.

Seeing as it also occurred in 2.82a for @50p suggests it's a issue with their hardware or the file.

@50p are you able to:

Upload the .blend file.
Upload crash information. This can be done by navigating to the Blender installation folder, run blender_debug_log.cmd, do what you need to get Blender to crash. Once it's crashed, a file explorer should open with two files, upload both of them to here.

Same here, no issues on Blender 2.83.0 with Linux. Seeing as it also occurred in 2.82a for @50p suggests it's a issue with their hardware or the file. @50p are you able to: 1. Upload the .blend file. 2. Upload crash information. This can be done by navigating to the Blender installation folder, run `blender_debug_log.cmd`, do what you need to get Blender to crash. Once it's crashed, a file explorer should open with two files, upload both of them to here.

Campbell Barton commented

2020-06-04 14:03:22 +02:00

Added subscriber: @ideasman42

Campbell Barton commented

2020-06-04 14:03:22 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Campbell Barton commented

2020-06-04 14:03:22 +02:00

Please provide simple blend file to redo the error.

Adam commented

2020-06-04 18:51:21 +02:00

Here is the file:
FollowQuad-Crash.blend

Here is the file: [FollowQuad-Crash.blend](https://archive.blender.org/developer/F8577109/FollowQuad-Crash.blend)

Alaska commented

2020-06-05 07:27:09 +02:00

I can reproduce the crash with the file provided. Will investigate further.

Alaska commented

2020-06-05 07:43:19 +02:00

Changed status from 'Needs User Info' to: 'Needs Triage'

Alaska commented

2020-06-05 07:44:09 +02:00

Upon further investigation, it has something to do with the bevel modifier, however I'm still having trouble reproducing the issue with a new file/object. Will continue the investigation.

Germano Cavalcante commented

2020-06-08 14:24:08 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-06-08 14:24:08 +02:00

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

Germano Cavalcante commented

2020-06-08 14:24:08 +02:00

I can confirm. But I still don't know exactly what causes the problem.
It seems to be related to linked mesh, Modifiers and UV.

 	ucrtbased.dll!00007ffabda3fcb1()	Unknown
>	blender.exe!GPU_vertformat_safe_attr_name(const unsigned char * attr_name, unsigned char * r_safe_name, unsigned int UNUSED_max_len) Line 283	C

 	blender.exe!extract_uv_init(const MeshRenderData * mr, void * buf) Line 1844	C
 	blender.exe!extract_init(ExtractTaskData * data) Line 4633	C
 	blender.exe!extract_init_and_run(void * taskdata) Line 4656	C
 	blender.exe!extract_single_threaded_task_node_exec(void * task_data) Line 4727	C
 	blender.exe!TaskNode::run::__l2::<lambda>() Line 97	C++
 	blender.exe!tbb::interface7::internal::delegated_function<void <lambda>(void) const ,void>::operator()() Line 94	C++
 	[External Code]	
 	blender.exe!tbb::interface7::internal::isolate_impl<void,void <lambda>(void) const>(const TaskNode::run::__l2::void <lambda>(void) & f) Line 161	C++
 	blender.exe!tbb::interface7::this_task_arena::isolate<void <lambda>(void)>(const TaskNode::run::__l2::void <lambda>(void) & f) Line 396	C++
 	blender.exe!TaskNode::run(const tbb::flow::interface11::continue_msg UNUSED_input) Line 98	C++
 	[External Code]	
 	blender.exe!tbb::flow::interface11::internal::function_body_leaf<tbb::flow::interface11::continue_msg,tbb::flow::interface11::continue_msg,std::_Binder<std::_Unforced,tbb::flow::interface11::continue_msg (__cdecl TaskNode::*)(tbb::flow::interface11::continue_msg),TaskNode *,std::_Ph<1> const &>>::operator()(const tbb::flow::interface11::continue_msg & i) Line 147	C++
 	blender.exe!tbb::flow::interface11::internal::continue_input<tbb::flow::interface11::continue_msg,tbb::flow::interface11::internal::Policy<void>>::apply_body_bypass(tbb::flow::interface11::continue_msg __formal) Line 822	C++
 	blender.exe!tbb::flow::interface11::internal::apply_body_task_bypass<tbb::flow::interface11::internal::continue_input<tbb::flow::interface11::continue_msg,tbb::flow::interface11::internal::Policy<void>>,tbb::flow::interface11::continue_msg>::execute() Line 312	C++
 	[External Code]	
 	blender.exe!tbb::task::wait_for_all() Line 810	C++
 	blender.exe!tbb::flow::interface10::graph::wait_functor::operator()() Line 252	C++
 	blender.exe!tbb::interface7::internal::delegated_function<tbb::flow::interface10::graph::wait_functor const ,void>::operator()() Line 94	C++
 	[External Code]	
 	blender.exe!tbb::interface7::task_arena::execute_impl<void,tbb::flow::interface10::graph::wait_functor const>(const tbb::flow::interface10::graph::wait_functor & f) Line 217	C++
 	blender.exe!tbb::interface7::task_arena::execute<tbb::flow::interface10::graph::wait_functor>(const tbb::flow::interface10::graph::wait_functor & f) Line 357	C++
 	blender.exe!tbb::flow::interface10::graph::wait_for_all() Line 347	C++
 	blender.exe!BLI_task_graph_work_and_wait(TaskGraph * task_graph) Line 132	C++
 	blender.exe!DRW_mesh_batch_cache_create_requested(TaskGraph * task_graph, Object * ob, Mesh * me, const Scene * scene, const bool is_paint_mode, const bool use_hide) Line 1440	C
 	blender.exe!drw_batch_cache_generate_requested(Object * ob) Line 3539	C
 	blender.exe!drw_engines_cache_populate(Object * ob) Line 1019	C
 	blender.exe!DRW_draw_render_loop_ex(Depsgraph * depsgraph, RenderEngineType * engine_type, ARegion * region, View3D * v3d, GPUViewport * viewport, const bContext * evil_C) Line 1480	C
 	blender.exe!DRW_draw_view(const bContext * C) Line 1397	C
 	blender.exe!view3d_draw_view(const bContext * C, ARegion * region) Line 1609	C
 	blender.exe!view3d_main_region_draw(const bContext * C, ARegion * region) Line 1634	C
 	blender.exe!ED_region_do_draw(bContext * C, ARegion * region) Line 543	C
 	blender.exe!wm_draw_window_offscreen(bContext * C, wmWindow * win, bool stereo) Line 689	C
 	blender.exe!wm_draw_window(bContext * C, wmWindow * win) Line 812	C
 	blender.exe!wm_draw_update(bContext * C) Line 1013	C
 	blender.exe!WM_main(bContext * C) Line 482	C
 	blender.exe!main(int argc, const unsigned char * * UNUSED_argv_c) Line 530	C
 	[External Code]

I can confirm. But I still don't know exactly what causes the problem. It seems to be related to linked mesh, Modifiers and UV. ``` lines ucrtbased.dll!00007ffabda3fcb1() Unknown > blender.exe!GPU_vertformat_safe_attr_name(const unsigned char * attr_name, unsigned char * r_safe_name, unsigned int UNUSED_max_len) Line 283 C blender.exe!extract_uv_init(const MeshRenderData * mr, void * buf) Line 1844 C blender.exe!extract_init(ExtractTaskData * data) Line 4633 C blender.exe!extract_init_and_run(void * taskdata) Line 4656 C blender.exe!extract_single_threaded_task_node_exec(void * task_data) Line 4727 C blender.exe!TaskNode::run::__l2::<lambda>() Line 97 C++ blender.exe!tbb::interface7::internal::delegated_function<void <lambda>(void) const ,void>::operator()() Line 94 C++ [External Code] blender.exe!tbb::interface7::internal::isolate_impl<void,void <lambda>(void) const>(const TaskNode::run::__l2::void <lambda>(void) & f) Line 161 C++ blender.exe!tbb::interface7::this_task_arena::isolate<void <lambda>(void)>(const TaskNode::run::__l2::void <lambda>(void) & f) Line 396 C++ blender.exe!TaskNode::run(const tbb::flow::interface11::continue_msg UNUSED_input) Line 98 C++ [External Code] blender.exe!tbb::flow::interface11::internal::function_body_leaf<tbb::flow::interface11::continue_msg,tbb::flow::interface11::continue_msg,std::_Binder<std::_Unforced,tbb::flow::interface11::continue_msg (__cdecl TaskNode::*)(tbb::flow::interface11::continue_msg),TaskNode *,std::_Ph<1> const &>>::operator()(const tbb::flow::interface11::continue_msg & i) Line 147 C++ blender.exe!tbb::flow::interface11::internal::continue_input<tbb::flow::interface11::continue_msg,tbb::flow::interface11::internal::Policy<void>>::apply_body_bypass(tbb::flow::interface11::continue_msg __formal) Line 822 C++ blender.exe!tbb::flow::interface11::internal::apply_body_task_bypass<tbb::flow::interface11::internal::continue_input<tbb::flow::interface11::continue_msg,tbb::flow::interface11::internal::Policy<void>>,tbb::flow::interface11::continue_msg>::execute() Line 312 C++ [External Code] blender.exe!tbb::task::wait_for_all() Line 810 C++ blender.exe!tbb::flow::interface10::graph::wait_functor::operator()() Line 252 C++ blender.exe!tbb::interface7::internal::delegated_function<tbb::flow::interface10::graph::wait_functor const ,void>::operator()() Line 94 C++ [External Code] blender.exe!tbb::interface7::task_arena::execute_impl<void,tbb::flow::interface10::graph::wait_functor const>(const tbb::flow::interface10::graph::wait_functor & f) Line 217 C++ blender.exe!tbb::interface7::task_arena::execute<tbb::flow::interface10::graph::wait_functor>(const tbb::flow::interface10::graph::wait_functor & f) Line 357 C++ blender.exe!tbb::flow::interface10::graph::wait_for_all() Line 347 C++ blender.exe!BLI_task_graph_work_and_wait(TaskGraph * task_graph) Line 132 C++ blender.exe!DRW_mesh_batch_cache_create_requested(TaskGraph * task_graph, Object * ob, Mesh * me, const Scene * scene, const bool is_paint_mode, const bool use_hide) Line 1440 C blender.exe!drw_batch_cache_generate_requested(Object * ob) Line 3539 C blender.exe!drw_engines_cache_populate(Object * ob) Line 1019 C blender.exe!DRW_draw_render_loop_ex(Depsgraph * depsgraph, RenderEngineType * engine_type, ARegion * region, View3D * v3d, GPUViewport * viewport, const bContext * evil_C) Line 1480 C blender.exe!DRW_draw_view(const bContext * C) Line 1397 C blender.exe!view3d_draw_view(const bContext * C, ARegion * region) Line 1609 C blender.exe!view3d_main_region_draw(const bContext * C, ARegion * region) Line 1634 C blender.exe!ED_region_do_draw(bContext * C, ARegion * region) Line 543 C blender.exe!wm_draw_window_offscreen(bContext * C, wmWindow * win, bool stereo) Line 689 C blender.exe!wm_draw_window(bContext * C, wmWindow * win) Line 812 C blender.exe!wm_draw_update(bContext * C) Line 1013 C blender.exe!WM_main(bContext * C) Line 482 C blender.exe!main(int argc, const unsigned char * * UNUSED_argv_c) Line 530 C [External Code] ```

Clément Foucault commented

2020-07-01 01:39:41 +02:00

Added subscriber: @fclem

Clément Foucault commented

2020-07-01 01:39:41 +02:00

The mesh itself seems to be the issue. If you run with --debug blender will complain about Invalid clnors in this fan!. I'm not sure if this is a DRW bug or a Bmesh one.

The crash also happens if you try to add a primitive mesh o the existing mesh (in edit mode > Shift + A > Add Cube).
Using another modifier (like subdiv) also crash.
Removing modifiers from BOTH instances fixes the issue.

The mesh itself seems to be the issue. If you run with `--debug` blender will complain about `Invalid clnors in this fan!`. I'm not sure if this is a DRW bug or a Bmesh one. - The crash also happens if you try to add a primitive mesh o the existing mesh (in edit mode > Shift + A > Add Cube). - Using another modifier (like subdiv) also crash. - Removing modifiers from **BOTH** instances fixes the issue.

Campbell Barton commented

2020-08-05 14:26:43 +02:00

In the middle of looking into this, it seems there is a mix-up between the meshes, as the edit-meshes modifier result has UV's and the other object which isn't using the edit-mesh doesn't have UV's. Need to look into this further.

Uploaded a simplified test file.
FollowQuad-Crash_simple.blend

In the middle of looking into this, it seems there is a mix-up between the meshes, as the edit-meshes modifier result has UV's and the other object which isn't using the edit-mesh doesn't have UV's. Need to look into this further. Uploaded a simplified test file. [FollowQuad-Crash_simple.blend](https://archive.blender.org/developer/F8748322/FollowQuad-Crash_simple.blend)

Campbell Barton changed title from ~~Crash 2.83: Unwrap - Follow Active Quads~~ to Crash: Adding UV's in edit-mode

2020-08-05 14:27:14 +02:00

Campbell Barton self-assigned this 2020-08-19 13:08:52 +02:00

Campbell Barton changed title from ~~Crash: Adding UV's in edit-mode~~ to Crash: Adding UV's in edit-mode with linked duplicates

2020-08-20 01:19:48 +02:00

Jeroen Bakker commented

2020-08-25 08:54:45 +02:00

Added subscriber: @Jeroen-Bakker