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Fixed in 2022.3.26f1, 6000.0.0b14



Found in




Issue ID




Malloc(Temp) Pool keeps increasing when executing the Job.Run() in a thread



Reproduction steps:
1. Open the attached project "ReproProj"
2. Open the “/Assets/MemoryLeak/MemoryLeakTest.unity” Scene
3. Build and Run (File > Build Settings > Build and Run)
4. In Editor, open the Memory Profiler window (Window > Analysis > Memory Profiler)
5. Click on Player
6. In the Memory Profiler window, select Player as the target
7. Click “Capture”
8. Wait until the Scene is blue again
9. Repeat the step 5
10. In the Memory Profiler window, select Compare Snapshots
11. Select the 2 most recent Snapshots
12. Open the All Of Memory tab
13. Search for “malloc”
14. Expand Native, Unity Subsystem, UnsafeUtility
15. Observe the Size Difference of Malloc(Temp) Pool
16. Repeat steps 9-15

Expected result: Size Difference is the same
Actual result: Size Difference keeps increasing

Reproducible with: 1.0.0 (2023.0b5), 1.1.0 (2022.3.19f1, 2023.2.7f1, 2023.3.0b5)
Could not test with: 0.7.1-preview.1 (2021.3.34f1) (Could not find memory usage of Malloc)

Reproducible on: Windows 10 Enterprise 21H2
Not reproducible on: No other environment tested

- Reproduces in Play Mode and Windows Standalone Player
- Reproduces with Android Player
- Does not reproduce with Mono Scripting Backend

  1. Resolution Note (fix version 2022.3.26f1):

    This was fixed in 2022.3.26f1.

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