Crash when switching to Sculpt mode (fixed in 3.4, only relevant for 3.3 LTS) #99174

New Issue

ebu · 2022-06-25T21:38:41+02:00

ebu commented

2022-06-25 21:38:41 +02:00

System Information
Operating system:
Linux bu-dvl-2 5.13.0-51-generic #58~20.04.1-Ubuntu SMP Tue Jun 14 11:29:12 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

Graphics card:
0:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07)

Blender Version
Broken: 3.2.0

Short description of error
crashed when switching to Sculpt mode

Exact steps for others to reproduce the error

Open alien.blend (attached)
Switch to Sculpt mode

alien.blend

crash.txt:
alien.crash.txt

**System Information** Operating system: Linux bu-dvl-2 5.13.0-51-generic #58~20.04.1-Ubuntu SMP Tue Jun 14 11:29:12 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux Graphics card: 0:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07) **Blender Version** Broken: 3.2.0 **Short description of error** crashed when switching to Sculpt mode **Exact steps for others to reproduce the error** - Open alien.blend (attached) - Switch to Sculpt mode [alien.blend](https://archive.blender.org/developer/F13229750/alien.blend) crash.txt: [alien.crash.txt](https://archive.blender.org/developer/F13229751/alien.crash.txt)

ebu commented

2022-06-25 21:38:41 +02:00

Added subscriber: @ebu-4

Robert Guetzkow changed title from ~~crashed when switching to Sculpt mode~~ to Crash when switching to Sculpt mode

2022-06-25 23:57:15 +02:00

ebu commented

2022-06-26 10:47:31 +02:00

it appears that the crash is somehow caused by the eyes, when blinded, alien can be sculpted as usually.

it appears that the crash is somehow caused by the eyes, when blinded, alien can be sculpted as usually. ![image.png](https://archive.blender.org/developer/F13230577/image.png)

Philipp Oeser commented

2022-06-26 16:24:37 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2022-06-26 16:24:37 +02:00

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

Philipp Oeser commented

2022-06-26 16:24:37 +02:00

Can confirm in 3.2
But this seems fixed in master?
@ebu-4 : Could you recheck with a fresh 3.3 & 3.2.1 build from https://builder.blender.org/download/daily/

Can confirm in 3.2 But this seems fixed in master? @ebu-4 : Could you recheck with a fresh 3.3 & 3.2.1 build from https://builder.blender.org/download/daily/

ebu commented

2022-06-26 19:46:39 +02:00

still crashes both in 3.2.1 and 3.3

alien.crash-3.3.0.txt

alien.crash-3.2.1.txt

just in case, ./blender --debug-all: alien.log

still crashes both in 3.2.1 and 3.3 [alien.crash-3.3.0.txt](https://archive.blender.org/developer/F13231163/alien.crash-3.3.0.txt) [alien.crash-3.2.1.txt](https://archive.blender.org/developer/F13231164/alien.crash-3.2.1.txt) just in case, ./blender --debug-all: [alien.log](https://archive.blender.org/developer/F13231168/alien.log)

Philipp Oeser commented

2022-06-26 20:38:05 +02:00

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

Pratik Borhade commented

2022-06-27 08:11:36 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-06-27 08:11:36 +02:00

I've been able to repro in 3.3 and 3.2.1
Maybe mesh is corrupted? I'm seeing broken geometry (missing faces, merged verts, etc.) in older versions

blender.exe         :0x00007FF61A540FA0  drw_resource_handle C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\intern\draw_manager_data.c:747
blender.exe         :0x00007FF61A538E60  DRW_shgroup_call_ex C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\intern\draw_manager_data.c:944
blender.exe         :0x00007FF61A543CF0  sculpt_draw_cb C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\intern\draw_manager_data.c:1136
blender.exe         :0x00007FF619BD4980  BKE_pbvh_draw_cb C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\pbvh.c:2910
blender.exe         :0x00007FF61A541260  drw_sculpt_generate_calls C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\intern\draw_manager_data.c:1244
blender.exe         :0x00007FF61A539990  DRW_shgroup_call_sculpt_with_materials C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\intern\draw_manager_data.c:1281
blender.exe         :0x00007FF61A59F920  workbench_cache_sculpt_populate C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\engines\workbench\workbench_engine.c:111
blender.exe         :0x00007FF61A59E3A0  workbench_cache_populate C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\engines\workbench\workbench_engine.c:419
blender.exe         :0x00007FF61A4FBC00  drw_engines_cache_populate C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\intern\draw_manager.c:1064
blender.exe         :0x00007FF61A4F4480  DRW_draw_render_loop_ex C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\intern\draw_manager.c:1683
blender.exe         :0x00007FF61A4F6110  DRW_draw_view C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\intern\draw_manager.c:1594
blender.exe         :0x00007FF61BD4ACE0  view3d_draw_view C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\editors\space_view3d\view3d_draw.c:1541
blender.exe         :0x00007FF61BD4B330  view3d_main_region_draw C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\editors\space_view3d\view3d_draw.c:1564
blender.exe         :0x00007FF619747800  ED_region_do_draw C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\editors\screen\area.c:551
blender.exe         :0x00007FF61970ADD0  wm_draw_window_offscreen C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_draw.c:945
blender.exe         :0x00007FF61970AA80  wm_draw_window C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_draw.c:1112
blender.exe         :0x00007FF61970A3E0  wm_draw_update C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_draw.c:1331
blender.exe         :0x00007FF6196B9970  WM_main C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm.c:630
blender.exe         :0x00007FF6196B1330  main C:\Users\Pratik\Desktop\BlenderOSP\blender\source\creator\creator.c:551
blender.exe         :0x00007FF61CCC4120  invoke_main d:\a01\_work\12\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:79
blender.exe         :0x00007FF61CCC3ED0  __scrt_common_main_seh d:\a01\_work\12\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288
blender.exe         :0x00007FF61CCC3EB0  __scrt_common_main d:\a01\_work\12\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:331
blender.exe         :0x00007FF61CCC41E0  mainCRTStartup d:\a01\_work\12\s\src\vctools\crt\vcstartup\src\startup\exe_main.cpp:17
KERNEL32.DLL        :0x00007FF90E387020  BaseThreadInitThunk
ntdll.dll           :0x00007FF90F7A2630  RtlUserThreadStart```

I've been able to repro in 3.3 and 3.2.1 Maybe mesh is corrupted? I'm seeing broken geometry (missing faces, merged verts, etc.) in older versions ```lines=10 blender.exe :0x00007FF61A540FA0 drw_resource_handle C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\intern\draw_manager_data.c:747 blender.exe :0x00007FF61A538E60 DRW_shgroup_call_ex C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\intern\draw_manager_data.c:944 blender.exe :0x00007FF61A543CF0 sculpt_draw_cb C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\intern\draw_manager_data.c:1136 blender.exe :0x00007FF619BD4980 BKE_pbvh_draw_cb C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenkernel\intern\pbvh.c:2910 blender.exe :0x00007FF61A541260 drw_sculpt_generate_calls C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\intern\draw_manager_data.c:1244 blender.exe :0x00007FF61A539990 DRW_shgroup_call_sculpt_with_materials C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\intern\draw_manager_data.c:1281 blender.exe :0x00007FF61A59F920 workbench_cache_sculpt_populate C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\engines\workbench\workbench_engine.c:111 blender.exe :0x00007FF61A59E3A0 workbench_cache_populate C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\engines\workbench\workbench_engine.c:419 blender.exe :0x00007FF61A4FBC00 drw_engines_cache_populate C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\intern\draw_manager.c:1064 blender.exe :0x00007FF61A4F4480 DRW_draw_render_loop_ex C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\intern\draw_manager.c:1683 blender.exe :0x00007FF61A4F6110 DRW_draw_view C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\draw\intern\draw_manager.c:1594 blender.exe :0x00007FF61BD4ACE0 view3d_draw_view C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\editors\space_view3d\view3d_draw.c:1541 blender.exe :0x00007FF61BD4B330 view3d_main_region_draw C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\editors\space_view3d\view3d_draw.c:1564 blender.exe :0x00007FF619747800 ED_region_do_draw C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\editors\screen\area.c:551 blender.exe :0x00007FF61970ADD0 wm_draw_window_offscreen C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_draw.c:945 blender.exe :0x00007FF61970AA80 wm_draw_window C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_draw.c:1112 blender.exe :0x00007FF61970A3E0 wm_draw_update C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm_draw.c:1331 blender.exe :0x00007FF6196B9970 WM_main C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\windowmanager\intern\wm.c:630 blender.exe :0x00007FF6196B1330 main C:\Users\Pratik\Desktop\BlenderOSP\blender\source\creator\creator.c:551 blender.exe :0x00007FF61CCC4120 invoke_main d:\a01\_work\12\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:79 blender.exe :0x00007FF61CCC3ED0 __scrt_common_main_seh d:\a01\_work\12\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288 blender.exe :0x00007FF61CCC3EB0 __scrt_common_main d:\a01\_work\12\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:331 blender.exe :0x00007FF61CCC41E0 mainCRTStartup d:\a01\_work\12\s\src\vctools\crt\vcstartup\src\startup\exe_main.cpp:17 KERNEL32.DLL :0x00007FF90E387020 BaseThreadInitThunk ntdll.dll :0x00007FF90F7A2630 RtlUserThreadStart```

Pratik Borhade commented

2022-06-27 11:44:27 +02:00

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

Pratik Borhade commented

2022-06-27 11:44:27 +02:00

C.object.data.validate() did not return true so mesh is not corrupted AFAIK
Confirming for now.
@ebu-4 hi, did you import this model from somewhere?

` C.object.data.validate()` did not return true so mesh is not corrupted AFAIK Confirming for now. @ebu-4 hi, did you import this model from somewhere?

ebu commented

2022-06-27 15:25:57 +02:00

In #99174#1380921, @PratikPB2123 wrote:
@ebu-4 hi, did you import this model from somewhere?

hi, no, just followed https://www.youtube.com/watch?v=CtrNYwc6P2c

not 100% but afrair I added eyes with boolean modifier, so not 1:1 as in tutorial

> In #99174#1380921, @PratikPB2123 wrote: > @ebu-4 hi, did you import this model from somewhere? hi, no, just followed https://www.youtube.com/watch?v=CtrNYwc6P2c not 100% but afrair I added eyes with boolean modifier, so not 1:1 as in tutorial

Kevin Curry commented

2022-06-27 16:47:43 +02:00

Added subscriber: @KevinCurry_Unity

Kevin Curry commented

2022-06-27 17:21:12 +02:00

I'm stepping through in the debugger and I can see inside sculpt_draw_cb that the index value returned from GPU_pbvh_buffers_material_index is -208 on the 12th time the callback is hit (line 1118)

On line 1119 I can see that the commit history from 2 years ago is a crash fix: #75981

Adding a check for || index < 0 will prevent the crash, but not necessarily the root cause.

Why does the function return -208, consistently? Is that a known value?

I'm stepping through in the debugger and I can see inside `sculpt_draw_cb` that the index value returned from `GPU_pbvh_buffers_material_index` is -208 on the 12th time the callback is hit (line 1118) On line 1119 I can see that the commit history from 2 years ago is a crash fix: [#75981](https://developer.blender.org/T75981) Adding a check for `|| index < 0` will prevent the crash, but not necessarily the root cause. Why does the function return -208, consistently? Is that a known value?

Philipp Oeser commented

2022-06-29 13:12:56 +02:00

Might be related to #99191 (Regression: Blender crashes when texture painting (caused by boolean modifers))

Philipp Oeser removed the

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Crash when switching to Sculpt mode (fixed in 3.4, only relevant for 3.3 LTS) #99174