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Fixed in 2022.2.X

Fixed in 2021.3.X, 2022.1.X

Votes

0

Found in

2019.4

2020.3

2021.2

2021.2.4f1

2022.1

Issue ID

1385669

Regression

No

[Linux][Vulkan] Editor crashes due to memory leak when building AssetBundles

Vulkan

-

Reproduction steps:
1. Download and open the attached project: "1140446ExcessiveVramUseOnBundlUnityProject.zip"
2. Go to Bundles > Build

Expected result: The AssetBundle is built without issue
Actual result: The Editor crashes silently due to excessive VRAM usage

Reproducible with: 2020.3.25f1, 2021.2.7f1, 2022.1.0b2
Could not test with: 2019.4.34f1 (Due to errors when opening the project)

Notes:
- Tested on Ubuntu 18.04 with Nvidia GTX 1060 6GB VRAM and Ubuntu 20.04 with Radeon Pro WX 5100 8GB VRAM
- The system with an AMD GPU reproduced the crash consistently, while the one with an Nvidia GPU only sometimes
- GPU usage was monitored by running terminal commands "watch -d -n 0.5 nvidia-smi" when using an Nvidia GPU or "radeontop" when using an AMD GPU
- Building the AssetBundle would sometimes result in a system-wide slowdown (on the system with an Nvidia GPU when the crash wouldn't occur)
- On average, building the AssetBundle would consume around 4.3GB of VRAM by itself (when the crash wouldn't occur)
- Not reproducible with OpenGL Graphics API
- Not reproducible on Windows with either D3D12 or Vulkan

  1. Resolution Note (fix version 2022.2):

    Fixed in version 2022.2.0a9

  2. Resolution Note (fix version 2022.1):

    Fixed in version 2022.1.0b15

  3. Resolution Note (fix version 2021.3):

    Fixed in version 2021.3.1f1

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