Unity Issue Tracker - Editor crashes on physx::Dy::PxsSolverStartTask::setupDescTask when moving Articulation Body GameObject with Immovable disabled

Fixed in 2022.2.X

Fixed in 2021.2.X, 2022.1.X

Votes

4

Found in

2020.3

2020.3.8f1

2021.1

2021.2

Issue ID

1338600

Regression

No

Editor crashes on physx::Dy::PxsSolverStartTask::setupDescTask when moving Articulation Body GameObject with Immovable disabled

Physics

May 25, 2021

How to reproduce:
1. Open the attached project ('case-1338600.zip')
2. Open the 'SampleScene' Scene
3. Enter Play Mode
4. In the Hierarchy window select the 'crashObject' and set the Immovable field of Articulation Body Component to true
5. Set Immovable to false after the GameObject lands on the floor
6. In the Scene view move the 'crashObject'

Reproducible with: 2020.3.10f1, 2021.1.9f1, 2021.2.0a19
Could not test with: 2019.4, 2018.4 (Articulation body not introduced)

First lines of the stack trace:
0x00007FF72C9836C8 (Unity) physx::Dy::PxsSolverStartTask::setupDescTask
0x00007FF72C982BFE (Unity) physx::Dy::PxsSolverStartTask::runInternal
0x00007FF72C8A3672 (Unity) physx::Cm::BaseTask::run
0x00007FF7298FCBC2 (Unity) PhysxJobFunc
0x00007FF72920099B (Unity) JobQueue::Exec

Resolution Note (fix version 2022.2):

2022.2.0a1
Resolution Note (fix version 2022.1):

Fixed in 2022.1.0b5
Resolution Note (fix version 2021.2):

Fixed in 2021.2.9f1

Comments (1)

Meatlofe

Jul 20, 2021 20:21

Can confirm, not fixed yet. Articulation bodies seem pretty buggy: The mass of the segment remains at 1 regardless of the "Mass" variable, and opposite torques to different pieces still applies non-negligible forces (even when they're connected with fixed joints).

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