[NativeAOT] Test_GetTotalAllocatedBytes test fails with OutOfMemoryException

[jkotas]

System.AggregateException: One or more errors occurred. (Insufficient memory to continue the execution of the program.)
 ---> System.OutOfMemoryException: Insufficient memory to continue the execution of the program.
   at System.Threading.Thread.StartCore() + 0xd5
   at Test_GetTotalAllocatedBytes.<>c__DisplayClass10_0.<TestAnotherThread>b__0() + 0x89
   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread, ExecutionContext, ContextCallback, Object) + 0x8b

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1133784
Build error leg or test failing: GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
Pull request: #119167

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": ["OutOfMemoryException","at Test_GetTotalAllocatedBytes"],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1133784
Error message validated: [OutOfMemoryException at Test_GetTotalAllocatedBytes]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 8/28/2025 7:39:21 PM UTC

Report

Build	Definition	Test	Pull Request
1173893	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1172109	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1170107	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1169720	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1169715	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1169449	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1169100	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1168781	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd	#120521
1165506	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1163154	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1159966	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1159002	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1158886	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1157805	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1157351	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1155469	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd	#119938
1154393	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1152976	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1152496	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1152168	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1151112	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd
1151036	dotnet/runtime	GC/API/GC/GetTotalAllocatedBytes/GetTotalAllocatedBytes.cmd

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	4	22

[jkotas]

The test is starting and joining threads in a tight loop:

runtime/src/tests/GC/API/GC/GetTotalAllocatedBytes.cs

Lines 113 to 124 in da52037

	while (running)
	{
	Thread thd = new Thread(() => {
	lock (lck)
	{
	s_stash = new byte[1234];
	}
	});
	thd.Start();
	thd.Join();
	}

. We may have a problem with cleaning up dead threads fast enough.

[dotnet-policy-service]

Tagging subscribers to this area: @agocke, @MichalStrehovsky, @jkotas
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[agocke]

@VSadov Could you take a look?