Regression: Crash: Vertex Parent + SimpleDeform modifier with origin / Apply on Spline #97151

New Issue

Georg K · 2022-04-07T21:04:48+02:00

Georg K commented

2022-04-07 21:04:48 +02:00

System Information
Operating system: Linux-5.15.28-1-MANJARO-x86_64-with-glibc2.35 64 Bits
Graphics card: AMD VERDE (DRM 2.50.0, 5.15.28-1-MANJARO, LLVM 13.0.1) AMD 4.5 (Core Profile) Mesa 21.3.7

Blender Version
Broken: 3.1.0 (crash when changing value), version: 3.2.0 Alpha, branch: master, commit date: 2022-04-04 15:54, hash: b5f3f8ef1d (crash on file open)
Worked: - before b9febb54a4

Short description of error
If an object is vertex-parented to a curve and the object is used a the origin for a Simple Deform modifier on the curve and the file is saved, blender crashes on opening the file.
The file will also crash while still open if Apply on Spline is activated and the angle of the Simple Deform modifier is changed.

terminal output:

Dependency cycle detected:
  OBCube/Transform Component/TRANSFORM_INIT() depends on
  OBBezierCurve/Geometry Component/GEOMETRY_EVAL() via 'Vertex Parent'
  OBCube/Transform Component/TRANSFORM_FINAL() via 'SimpleDeform Modifier'
  OBCube/Transform Component/TRANSFORM_SIMULATION_INIT() via 'Simulation -> Final Transform'
  OBCube/Transform Component/TRANSFORM_EVAL() via 'Transform Eval -> Simulation Init'
  OBCube/Transform Component/TRANSFORM_PARENT() via 'Eval'
  OBCube/Transform Component/TRANSFORM_LOCAL() via 'ObLocal -> ObParent'
  OBCube/Transform Component/TRANSFORM_INIT() via 'Transform Init'
Detected 1 dependency cycles
Writing: /home/georg/Blendertemp/Curve Vertex Parent Deform Crash - crash on opening.crash.txt
Segmentation fault (core dumped)

Exact steps for others to reproduce the error
(1)
In the attached file,

set the origin of the Simple Deform modifier to Cube
activate Apply on Spline for the Simple Deform modifier
try changing the angle of the Simple Deform modifier
crash (in 3.2.0 Alpha, 3.1.0, but not in 2.93.0)

(2)
In the attached file,

activate Apply on Spline for the Simple Deform modifier
set the origin of the Simple Deform modifier to Cube
crash (in 3.2.0 Alpha, 3.1.0, but not in 2.93.0)

(3)
In the attached file,

set the origin of the Simple Deform modifier to Cube
activate Apply on Spline for the Simple Deform modifier
save the file
try opening it
crash (in 3.2.0 Alpha, 3.1.0, 2.93.0, 2.91.2 and good old 2.79b)

Curve Vertex Parent Deform Crash - still opening.blend

Blender 3.1.0, Commit date: 2022-03-08 18:16, Hash c77597cd0e15

backtrace
blender(BLI_system_backtrace+0x33) [0x564c71b01c63]
blender(+0xf5020e) [0x564c6f32f20e]
/usr/lib/libc.so.6(+0x42560) [0x7f18bc95d560]
blender(+0xffc03f) [0x564c6f3db03f]
blender(BKE_object_get_parent_matrix+0x1d1) [0x564c6f3db5f1]
blender(BKE_object_eval_parent+0x71) [0x564c6f3f2b41]
blender(+0x154f4e1) [0x564c6f92e4e1]
blender(+0x154f532) [0x564c6f92e532]
blender(+0x372829a) [0x564c71b0729a]
/usr/lib/libtbb.so.12(+0x20abe) [0x7f18cf851abe]
/usr/lib/libtbb.so.12(+0x22d44) [0x7f18cf853d44]
/usr/lib/libc.so.6(+0x8d5c2) [0x7f18bc9a85c2]
/usr/lib/libc.so.6(clone+0x44) [0x7f18bca2d584]

**System Information** Operating system: Linux-5.15.28-1-MANJARO-x86_64-with-glibc2.35 64 Bits Graphics card: AMD VERDE (DRM 2.50.0, 5.15.28-1-MANJARO, LLVM 13.0.1) AMD 4.5 (Core Profile) Mesa 21.3.7 **Blender Version** Broken: 3.1.0 (crash when changing value), version: 3.2.0 Alpha, branch: master, commit date: 2022-04-04 15:54, hash: `b5f3f8ef1d` (crash on file open) Worked: - before b9febb54a4 **Short description of error** If an object is vertex-parented to a curve and the object is used a the origin for a Simple Deform modifier on the curve and the file is saved, blender crashes on opening the file. The file will also crash while still open if Apply on Spline is activated and the angle of the Simple Deform modifier is changed. terminal output: ``` Dependency cycle detected: OBCube/Transform Component/TRANSFORM_INIT() depends on OBBezierCurve/Geometry Component/GEOMETRY_EVAL() via 'Vertex Parent' OBCube/Transform Component/TRANSFORM_FINAL() via 'SimpleDeform Modifier' OBCube/Transform Component/TRANSFORM_SIMULATION_INIT() via 'Simulation -> Final Transform' OBCube/Transform Component/TRANSFORM_EVAL() via 'Transform Eval -> Simulation Init' OBCube/Transform Component/TRANSFORM_PARENT() via 'Eval' OBCube/Transform Component/TRANSFORM_LOCAL() via 'ObLocal -> ObParent' OBCube/Transform Component/TRANSFORM_INIT() via 'Transform Init' Detected 1 dependency cycles Writing: /home/georg/Blendertemp/Curve Vertex Parent Deform Crash - crash on opening.crash.txt Segmentation fault (core dumped) ``` **Exact steps for others to reproduce the error** (1) In the attached file, - set the origin of the Simple Deform modifier to Cube - activate Apply on Spline for the Simple Deform modifier - try changing the angle of the Simple Deform modifier - crash (in 3.2.0 Alpha, 3.1.0, but not in 2.93.0) (2) In the attached file, - activate Apply on Spline for the Simple Deform modifier - set the origin of the Simple Deform modifier to Cube - crash (in 3.2.0 Alpha, 3.1.0, but not in 2.93.0) (3) In the attached file, - set the origin of the Simple Deform modifier to Cube - activate Apply on Spline for the Simple Deform modifier - save the file - try opening it - crash (in 3.2.0 Alpha, 3.1.0, 2.93.0, 2.91.2 and good old 2.79b) [Curve Vertex Parent Deform Crash - still opening.blend](https://archive.blender.org/developer/F12981349/Curve_Vertex_Parent_Deform_Crash_-_still_opening.blend) ``` Blender 3.1.0, Commit date: 2022-03-08 18:16, Hash c77597cd0e15 backtrace blender(BLI_system_backtrace+0x33) [0x564c71b01c63] blender(+0xf5020e) [0x564c6f32f20e] /usr/lib/libc.so.6(+0x42560) [0x7f18bc95d560] blender(+0xffc03f) [0x564c6f3db03f] blender(BKE_object_get_parent_matrix+0x1d1) [0x564c6f3db5f1] blender(BKE_object_eval_parent+0x71) [0x564c6f3f2b41] blender(+0x154f4e1) [0x564c6f92e4e1] blender(+0x154f532) [0x564c6f92e532] blender(+0x372829a) [0x564c71b0729a] /usr/lib/libtbb.so.12(+0x20abe) [0x7f18cf851abe] /usr/lib/libtbb.so.12(+0x22d44) [0x7f18cf853d44] /usr/lib/libc.so.6(+0x8d5c2) [0x7f18bc9a85c2] /usr/lib/libc.so.6(clone+0x44) [0x7f18bca2d584] ```

Georg K commented

2022-04-07 21:04:49 +02:00

Added subscriber: @georgK

Pratik Borhade commented

2022-04-08 07:30:13 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-04-08 07:30:13 +02:00

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

Pratik Borhade commented

2022-04-08 07:30:13 +02:00

Thanks for the report. I can confirm. checking...

Pratik Borhade commented

2022-04-08 07:30:30 +02:00

No description provided.

Pratik Borhade commented

2022-04-08 07:52:22 +02:00

Added subscriber: @HooglyBoogly

Pratik Borhade commented

2022-04-08 07:52:22 +02:00

Looks like crash was introduced in b9febb54a4
@HooglyBoogly , can you check?

Looks like crash was introduced in b9febb54a4 @HooglyBoogly , can you check?

Georg K commented

2022-04-08 13:35:15 +02:00

While dragging the angle slider does not crash those older Blender versions, the file from case (3) crashes 2.93.0, 2.91.2 and good old 2.79b.
In these cases, the circular dependency leads to uncontrolled translation of the curve and cube if the angle slider is scrubbed quickly (probably to be expected).

While dragging the angle slider does not crash those older Blender versions, the file from case (3) crashes 2.93.0, 2.91.2 and good old 2.79b. In these cases, the circular dependency leads to uncontrolled translation of the curve and cube if the angle slider is scrubbed quickly (probably to be expected).

Pratik Borhade commented

2022-04-09 12:44:33 +02:00

Hi, then better we handle the third case in separate report. Can you do that?

Also, I was not sure about the third step (try opening it) so I did not test this in any version.
I'll check if you can clarify that step.

Hi, then better we handle the third case in separate report. Can you do that? Also, I was not sure about the third step (`try opening it`) so I did not test this in any version. I'll check if you can clarify that step.

Georg K commented

2022-04-09 19:12:18 +02:00

Oh sorry, seems like the 'save the blend file' step got lost in case (3) - I edited the first post.
Not sure if a separate report is needed since the older Blender versions won't get patched, but if you still think it makes sense, I'll open another report.

Oh sorry, seems like the 'save the blend file' step got lost in case (3) - I edited the first post. Not sure if a separate report is needed since the older Blender versions won't get patched, but if you still think it makes sense, I'll open another report.

Philipp Oeser changed title from ~~Crash: Vertex Parent + SimpleDeform modifier with origin / Apply on Spline~~ to Regression: Crash: Vertex Parent + SimpleDeform modifier with origin / Apply on Spline

2022-04-12 09:51:55 +02:00

Hans Goudey self-assigned this 2022-04-27 20:02:38 +02:00

blender-admin commented

2022-04-28 21:58:52 +02:00

This issue was referenced by 8095875dff

This issue was referenced by 8095875dffebed289791491ff15d68d49deb85ef

Hans Goudey commented

2022-04-28 21:59:10 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Hans Goudey closed this issue

2022-04-28 21:59:10 +02:00

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Regression: Crash: Vertex Parent + SimpleDeform modifier with origin / Apply on Spline #97151