Hair Particle Edit - Particle Mirror Crash when children are visible in the viewport #68645

New Issue

Isiac Dagraca · 2019-08-14T14:44:59+02:00

Isiac Dagraca commented

2019-08-14 14:44:59 +02:00

System Information
Operating system: Windows 10
Graphics card: GTX 1080ti

Blender Version
Broken: v2.80
Worked: v2.79

Short description of error
When using the particle editor to edit hair, selecting a hair strand with "L" then selecting Mirror from the particle menu causes a crash seems connected to strand child visibility.

Exact steps for others to reproduce the error
Load New Scene
Replace Cube with Sphere
add particle hair
turn number to zero
go to particle edit
add strands with brush
enable simple children in hair particle
enable children visibility
enable selection mode so strand vericies are visible
select strand with "L"
click mirror
Crash

**System Information** Operating system: Windows 10 Graphics card: GTX 1080ti **Blender Version** Broken: v2.80 Worked: v2.79 **Short description of error** When using the particle editor to edit hair, selecting a hair strand with "L" then selecting Mirror from the particle menu causes a crash seems connected to strand child visibility. **Exact steps for others to reproduce the error** Load New Scene Replace Cube with Sphere add particle hair turn number to zero go to particle edit add strands with brush enable simple children in hair particle enable children visibility enable selection mode so strand vericies are visible select strand with "L" click mirror *Crash*

Isiac Dagraca commented

2019-08-14 14:44:59 +02:00

Added subscriber: @IsiacDaGraca

Philipp Oeser commented

2019-09-11 11:53:05 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2019-09-11 11:53:05 +02:00

Can confirm, checking... this worked in 2.79...

Philipp Oeser changed title from ~~Hair Particle Edit - Particle Mirror Crash~~ to Hair Particle Edit - Particle Mirror Crash when children are visible in the viewport

2019-09-11 11:54:19 +02:00

blender-admin commented

2019-09-11 13:33:29 +02:00

This issue was referenced by db4571f3c3

This issue was referenced by db4571f3c331b635a10c2804360cb9403420d3c7

Philipp Oeser commented

2019-09-11 13:49:36 +02:00

This crashes in the psys_thread_create_path
where (ParticleKey *)(key- [x] + k) is NULL (the parent in offset_child)

backtrace:

1 copy_v3_v3                math_vector_inline.c 63   0x2ca2a36      
2 offset_child              particle.c           2196 0x2ca92a4      
3 psys_thread_create_path   particle.c           2642 0x2caabb3      
4 exec_child_path_cache     particle.c           2752 0x2cab125      
5 task_scheduler_thread_run task.c               450  0x2e8fe05      
6 start_thread                                        0x7ffff481d5a2 
7 clone                                               0x7ffff1bb0303

full ASAN output (heap-buffer-overflow) in P1095

This crashes in the `psys_thread_create_path` where `(ParticleKey *)(key- [x] + k) ` is NULL (the parent in `offset_child`) backtrace: ``` 1 copy_v3_v3 math_vector_inline.c 63 0x2ca2a36 2 offset_child particle.c 2196 0x2ca92a4 3 psys_thread_create_path particle.c 2642 0x2caabb3 4 exec_child_path_cache particle.c 2752 0x2cab125 5 task_scheduler_thread_run task.c 450 0x2e8fe05 6 start_thread 0x7ffff481d5a2 7 clone 0x7ffff1bb0303 ``` full ASAN output (heap-buffer-overflow) in [P1095](https://archive.blender.org/developer/P1095.txt)

Philipp Oeser commented

2019-09-26 17:38:55 +02:00

Changed status from 'Open' to: 'Resolved'

Philipp Oeser closed this issue

2019-09-26 17:38:55 +02:00

Philipp Oeser self-assigned this 2019-09-26 17:38:55 +02:00

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Hair Particle Edit - Particle Mirror Crash when children are visible in the viewport #68645