Debug build memory leak leading to OOM crashes in .NET 8 Android, when using OxyPlot PlotView

No repository files or tests are named. Start by running the linked OxyPlotTest2 reproduction with OxyPlot.Maui.Skia 1.0.2 on the specified moto g play 2023 Android 12 device, and monitor native memory with adb shell dumpsys meminfo; done means identifying the leak and confirming that Debug builds no longer grow until OOM while Release behavior remains stable.

Description

We have a Xamarin.Forms app that we are upgrading/migrating to .NET MAUI and .NET 8. After migrating, we noticed that running Debug builds eventually crash from a memory leak/OOM situation somewhere in the native/runtime code, usually within an hour of the app just idling after deploying.

We have narrowed down the problem to the inclusion of the OxyPlot PlotView graph widget. This within a new project created with the default Visual Studio .NET MAUI template. So far, we have only seen this on moto g play 2023 phones running Android 12, so this may be device/OS specific. We have not seen the same problem with either the Android 12 emulator, or the older Android 10 devices we happen to have on hand. iOS devices also do not seem to be affected.

Reproduction Steps

1.) Create a new default .NET MAUI app project in Visual Studio 2022.
2.) Add OxyPlot.Maui.Skia (V1.0.2) to the project as a top-level NuGet package.
3.) Add a PlotView widget to the MainPage.xaml.
4.) Give the created PlotView a dummy/sample PlotModel data.
5.) Run and deploy a Debug build of the app to the Android 12 device.

See test project repo at https://github.com/ngj88/OxyPlotTest2

Expected behavior

App runs/idles w/o eventually exhausting memory and causing a crash.

Actual behavior

App crashes after running/idling for awhile, it happens within an hour for us. Exactly where and how the crash happens varies from run to run (probably not that relevant, if we're chasing down the source of a memory leak). The crashes happen on Debug builds running on the moto g play 2023 phone on Android 12. Periodically checking the idling app w/"adb shell dumpsys meminfo", seems to show the native heap memory growing in time. In an interesting contrast, the project's Release build does not crash on the same device, and its memory footprint remains stable as the app runs/idles.

outputMessages.zip

Regression?

We did not see this problem with our Xamarin.Forms 5.0 & .NET Standard 2.1 app, prior to migrating to .NET MAUI & .NET 8.

Known Workarounds

No response

Configuration

My Visual Studio version is 17.12.4. MAUI used is 8.0.100. OxyPlot used is 1.0.2.

dotnet --info
.NET SDK:
Version: 9.0.102
Commit: cb83cd4923
Workload version: 9.0.100-manifests.4a54b1a6
MSBuild version: 17.12.18+ed8c6aec5

Runtime Environment:
OS Name: Windows
OS Version: 10.0.19045
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\9.0.102\

.NET workloads installed:
[ios]
Installation Source: VS 17.12.35707.178
Manifest Version: 18.1.9163/9.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\9.0.100\microsoft.net.sdk.ios\18.1.9163\WorkloadManifest.json
Install Type: Msi

[maui-windows]
Installation Source: VS 17.12.35707.178
Manifest Version: 9.0.14/9.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\9.0.100\microsoft.net.sdk.maui\9.0.14\WorkloadManifest.json
Install Type: Msi

[android]
Installation Source: VS 17.12.35707.178
Manifest Version: 35.0.7/9.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\9.0.100\microsoft.net.sdk.android\35.0.7\WorkloadManifest.json
Install Type: Msi

[maccatalyst]
Installation Source: VS 17.12.35707.178
Manifest Version: 18.1.9163/9.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\9.0.100\microsoft.net.sdk.maccatalyst\18.1.9163\WorkloadManifest.json
Install Type: Msi

Configured to use loose manifests when installing new manifests.

Host:
Version: 9.0.1
Architecture: x64
Commit: c8acea2262

.NET SDKs installed:
3.1.426 [C:\Program Files\dotnet\sdk]
5.0.100 [C:\Program Files\dotnet\sdk]
5.0.103 [C:\Program Files\dotnet\sdk]
8.0.202 [C:\Program Files\dotnet\sdk]
9.0.102 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.All 2.1.23 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.23 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.12 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 9.0.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.12 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 9.0.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.1.9 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 5.0.0 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 5.0.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.12 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 9.0.1 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
arm64 [C:\Program Files\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\arm64\InstallLocation]
x86 [C:\Program Files (x86)\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
Not set

global.json file:
Not found

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Other information

No response