Weird Crash while sculpting #97235

New Issue

Marc Robert · 2022-04-11T08:28:32+02:00

Marc Robert commented

2022-04-11 08:28:32 +02:00

System Information
Operating system: Windows-11-11.0.22000.469-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 770/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 472.12

Blender Version
Broken: version: 3.1.0, branch: master, commit date: 2022-03-08 18:16, hash: c77597cd0e
Worked: (newest version of Blender that worked as expected)

Short description of error
Hello, Blender crashes randomly on my sculpt, happened roughly 2-3 times within 1 hour.
I didn't manage to notice what was actively causing it... So it's kinda tricky to reproduce.

This happened as well on version 3.0.0 (with the same file)

Exact steps for others to reproduce the error
Sculpting, grabing, smoothing the mesh.
sclpt_head.7z

**System Information** Operating system: Windows-11-11.0.22000.469-SP0 64 Bits Graphics card: NVIDIA GeForce GTX 770/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 472.12 **Blender Version** Broken: version: 3.1.0, branch: master, commit date: 2022-03-08 18:16, hash: `c77597cd0e` Worked: (newest version of Blender that worked as expected) **Short description of error** Hello, Blender crashes randomly on my sculpt, happened roughly 2-3 times within 1 hour. I didn't manage to notice what was actively causing it... So it's kinda tricky to reproduce. This happened as well on version 3.0.0 (with the same file) **Exact steps for others to reproduce the error** Sculpting, grabing, smoothing the mesh. [sclpt_head.7z](https://archive.blender.org/developer/F12994571/sclpt_head.7z)

Marc Robert commented

2022-04-11 08:28:32 +02:00

Added subscriber: @trebor777

Germano Cavalcante commented

2022-04-11 16:31:32 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2022-04-11 16:31:32 +02:00

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

Germano Cavalcante commented

2022-04-11 16:31:32 +02:00

I cannot reproduce the problem.
Can you try running blender in debug mode? Perhaps some information in the logs can help identify the problem.

To run in debug mode, in the Blender's installation directory, double click on the blender_debug_gpu.cmd.
Try to reproduce the error again.
Once it crashes, the Windows Explorer should open and show you up to two files, a debug log and the system information.
Add them to your bug report by clicking on the upload button as shown in the screenshot below or via drag and drop.
Please also upload the crash log located in C:\Users\[your username]\AppData\Local\Temp\[project name].crash.txt (or simply type %TEMP% into the path bar of the Windows Explorer).

I cannot reproduce the problem. Can you try running blender in debug mode? Perhaps some information in the logs can help identify the problem. To run in `debug mode`, in the Blender's installation directory, double click on the `blender_debug_gpu.cmd`. Try to reproduce the error again. Once it crashes, the Windows Explorer should open and show you up to two files, a `debug log` and the `system information`. Add them to your bug report by clicking on the upload button as shown in the screenshot below or via drag and drop. Please also upload the crash log located in `C:\Users\[your username]\AppData\Local\Temp\[project name].crash.txt` (or simply type `%TEMP%` into the path bar of the Windows Explorer). ![2019_12_04_upload_icon_developer_blender_org.png](https://archive.blender.org/developer/F8190038/2019_12_04_upload_icon_developer_blender_org.png)

Marc Robert commented

2022-04-11 16:45:54 +02:00

Thanks for looking at it.
It's pretty weird indeed. I'll be sure to try it out in debug mode and give you the log files.

Thanks for looking at it. It's pretty weird indeed. I'll be sure to try it out in debug mode and give you the log files.

Marc Robert commented

2022-04-12 20:24:41 +02:00

Hello again,
I've reproduced it with the crash with the debug mode.
Despite what the files say, I'm on Windows 11 ( was an upgrade from Win10) if that's of any use.blender_debug_output.txt
Here are the files

sclpt_head.crash.txt

blender_system_info.txt

Looking at the crash file, it's seems related to this issue.
https://developer.blender.org/T89164

I'll try to reproduce it with Smoothing/brush size

Hello again, I've reproduced it with the crash with the debug mode. Despite what the files say, I'm on Windows 11 ( was an upgrade from Win10) if that's of any use.[blender_debug_output.txt](https://archive.blender.org/developer/F12998607/blender_debug_output.txt) Here are the files [sclpt_head.crash.txt](https://archive.blender.org/developer/F12998606/sclpt_head.crash.txt) [blender_system_info.txt](https://archive.blender.org/developer/F12998608/blender_system_info.txt) Looking at the crash file, it's seems related to this issue. https://developer.blender.org/T89164 I'll try to reproduce it with Smoothing/brush size

Germano Cavalcante commented

2022-04-12 21:20:03 +02:00

Changed status from 'Needs User Info' to: 'Needs Developer To Reproduce'

Germano Cavalcante commented

2022-04-12 21:20:03 +02:00

Added subscriber: @lichtwerk

Germano Cavalcante commented

2022-04-12 21:20:03 +02:00

Thanks for the logs.
In fact it is the same call stack as #89164 (Crash in sculpt mode using "Smooth" brush and tab with tablet stylus). The same do_enhance_details_brush_task_cb_ex callback.
Could it be that the fix did not solve 100% of the cases?
@lichtwerk, any thoughts?

Thanks for the logs. In fact it is the same call stack as #89164 (Crash in sculpt mode using "Smooth" brush and tab with tablet stylus). The same `do_enhance_details_brush_task_cb_ex` callback. Could it be that the fix did not solve 100% of the cases? @lichtwerk, any thoughts?

Philipp Oeser commented

2022-04-13 12:07:03 +02:00

Changed status from 'Needs Developer To Reproduce' to: 'Needs User Info'

Philipp Oeser commented

2022-04-13 12:07:03 +02:00

Hm, not sure (I cannot reproduce this yet and I also cannot reproduce #89164 anymore, so that should still be fixed).
The situation where detail_directions are not initialized should be resolved.

So without being able to reproduce with a debugger, I am unsure what the reason is.
Of course we could also try to narrow it down:

is this also happening in simpler files?
is this also happening without dyntopo?
is this also happening without pressure sensitivity?
is this happening anywhere on the model?

I know, this can be cumbersome on something that happens only occasionally.
@trebor777 : are you building your own blender? could run it in a debugger?

Hm, not sure (I cannot reproduce this yet and I also cannot reproduce #89164 anymore, so that should still be fixed). The situation where `detail_directions` are not initialized should be resolved. So without being able to reproduce with a debugger, I am unsure what the reason is. Of course we could also try to narrow it down: - is this also happening in simpler files? - is this also happening without dyntopo? - is this also happening without pressure sensitivity? - is this happening anywhere on the model? I know, this can be cumbersome on something that happens only occasionally. @trebor777 : are you building your own blender? could run it in a debugger?

Marc Robert commented

2022-04-13 15:15:41 +02:00

@lichtwerk : Sadly No I'm using the official build on Windows.
What I've noticed is that it's not immediate, it takes some time before it happens (I'd say around 10mins, sometimes more), which makes it pretty random. (memory related? undo? leak maybe?)

I'll try to identify steps when I get back to this personal project

@lichtwerk : Sadly No I'm using the official build on Windows. What I've noticed is that it's not immediate, it takes some time before it happens (I'd say around 10mins, sometimes more), which makes it pretty random. (memory related? undo? leak maybe?) I'll try to identify steps when I get back to this personal project

Marc Robert commented

2022-04-15 15:33:55 +02:00

@lichtwerk @mano-wii
2022-04-15 15-24-10.mkv
I've recorded myself while sculpting in order to catch it.

So in the video the crash happens right at the end. At the beginning i'm trying different things to repro it, then i move on to sculpting a bit. Smoothing some area with the SHIFT key and boom crash.

@lichtwerk @mano-wii [2022-04-15 15-24-10.mkv](https://archive.blender.org/developer/F13002765/2022-04-15_15-24-10.mkv) I've recorded myself while sculpting in order to catch it. So in the video the crash happens right at the end. At the beginning i'm trying different things to repro it, then i move on to sculpting a bit. Smoothing some area with the SHIFT key and boom crash.

Joseph Eagar commented

2022-04-16 03:58:53 +02:00

Added subscriber: @JosephEagar