AudioServer crashes when playing sounds through an AnimationPlayer

[SchimmelSpreu83]

Tested versions

• Tested from Godot v4.4.dev4+
• Apparently not reproducible in Godot v4.4.dev3

System information

Godot v4.4.dev6 - Windows 10.0.22621 - Multi-window, 3 monitors - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 3050 (NVIDIA; 32.0.15.6081) - AMD Ryzen 5 4500 6-Core Processor (12 threads)

Issue description

The AudioServer(? - unsure because no error occurs) crashes when attempting to mass play audio-streams though an AnimationPlayer.

Afterwards no sound is ever played until restarting the game.

EDIT: Here is a video showing the issue:
https://github.com/user-attachments/assets/f1291d12-9c0c-4bc2-9c0b-87b1881b3ba0

Steps to reproduce

• Add an AudioStreamPlayer(2D/3D).
• Add an AnimationPlayer with a new animation.
• Set the length to a very small value (eg. 0.075).
• Add an AudioPlaybackTrack with any audio stream.
• Mass play the animation over and over until the AudioDriver(?) crashes.

MRP tested without code but with signals.

Minimal reproduction project (MRP)

audio-issue-test.zip

Mash the 'Play' button and at some point the AudioDriver(?) should crash.

[timothyqiu]

I can't reproduce this crash using the MRP. I'm on Linux though.

[matheusmdx]

I was able to reproduce the issue and bisected to #97625, @SourceOfHTML

A detail is if you try to close the game after the bug started, the entire game will freeze and become unresponsive, only being able to be closed by the task manager.

I did a small modification in the original mrp to make easier to debugger that, i used the _physics_process callback to call the animations in a way that make the bug happen in 1~2 seconds. I also added a code to kill the game process when press the Enter key to not need to open the task manager to do it (but needs to be pressed before attempt to close normally, otherwise everything will freeze).

audio-issue-test2.zip

Godot v4.4.dev3 - Windows 10.0.19045 - Multi-window, 2 monitors - Vulkan (Forward+) - dedicated AMD Radeon RX 580 2048SP (Advanced Micro Devices, Inc.; 31.0.21921.1000) - AMD Ryzen 5 3600 6-Core Processor (12 threads)

[adamscott]

Cannot reproduce on macOS (master). Is it a Windows-specific issue?

[matheusmdx]

Me and the issue author is using Windows, the author of issue #100819 that seems to be the same problem also use windows and timothyqiu was unable to reproduce on Linux, so indeed seems to be windows specific.

[adamscott]

@matheusmdx Could you test my new PR #101097? I think it could fix this issue.

[matheusmdx]

Cherry-picked pr #101097 and i can confirm that fixes this issue and #100819