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Won't Fix

Votes

0

Found in

2021.2

2021.2.9f1

2022.1

2022.2

Issue ID

1410334

Regression

No

Editor crashes with no stack trace when loading a new scene in Awake() function

Scene Management

-

Reproduction steps:
1. Open users attached project
2. Open /_DreamIsland/_Scenes/Title
3. Enter and Exit the Play Mode twice

Expected result: A new scene is loaded
Actual result: Editor crashes

Reproducible with: 2021.2.17f1, 2022.1.0b13, 2022.2.0a8
Could not test with: 2019.4.37f1, 2020.3.31f1 (could not downgrade the project)

Note: sometimes it might take multiple tries for Editor to crash

  1. Resolution Note:

    The crash happens in cri_ware_unity.dll!00007ffe85bc55f0() which seems to be a native plugin made by https://www.criware.com/en/

    From my investigation this happens in:
    ```
    private void SceneLoaded(Scene nextScene, LoadSceneMode mode)
    {
    if (nextScene.name==$"{SceneStateEnum.Title}")
    {
    bgmManager.PlayAndStopBgm(BgmEnum.TitleBGM, false);
    }else if(nextScene.name==$"{SceneStateEnum.Tutorial}")
    {
    bgmManager.PlayAndStopBgm(BgmEnum.TutorialBGM, true);
    }
    }
    ```
    because `bgmManager` is null and it calls into native code without any check.

    By reading the code I see it adds a `sceneLoaded` callback, but it doesn't remove it.
    ```
    private void Awake()
    {
    SceneManager.sceneLoaded += SceneLoaded;
    }
    ```
    This callback will remain registered and `SceneLoaded` will be called every time a new scene is loaded. Adding
    ```
    private void OnDestroy()
    {
    SceneManager.sceneLoaded -= SceneLoaded;
    }
    ```
    solves the issue, but I think a bug report should be filed to the native plugin maintainers to make sure they handle calls on null pointers

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