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Fixed in 2020.2.X

Fixed in 2019.3.X, 2020.1.X



Found in




Issue ID




[ADB v2] Corrupted assets are cached and causes cache poisoning

Asset - Database


How to reproduce:
1. Build & Run Unity Editor from the source code
2. Make sure the ADBv2 Cache Server is running (Connection has to be successful)
3. Add breakpoint on line "shadercompiler::SendCommand(...)" at ShaderCompilerClient.cpp:757
4. Create a default compute shader
5. When the breakpoint is hit, kill all "UnityShaderCompiler" processes
6. Notice, that the shader is broken now
7. Close the project & delete it's "Library" folder
8. Open the project again

Actual result: ADBv2 cache server is poisoned with the broken asset and pulls it back to the project.
Expected result: ADBv2 doesn't cache corrupted assets.

Reproducible with: 2019.3.0f1, 2020.1.0a20.

- Didn't test earlier versions because the repro is quite complex and requires a lot of time.
- Unity accelerator is required for the issue to reproduce.

  1. Resolution Note (fix version 2020.1):

    Fixed in 2020.1.0b5

  2. Resolution Note (fix version 2019.3):

    Fixed in 2019.3.10f1

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