System.Net.Sockets.Tests.NoParallelSelectTests.Select_LargeNumber_Succcess failing

[MichalStrehovsky]

[FAIL] System.Net.Sockets.Tests.NoParallelSelectTests.Select_LargeNumber_Succcess
Assert.Equal() Failure: Values differ
Expected: 1
Actual:   32
   at System.Reflection.DynamicInvokeInfo.Invoke(Object, IntPtr, Object[], BinderBundle, Boolean) in /_/src/coreclr/nativeaot/System.Private.CoreLib/src/System/Reflection/DynamicInvokeInfo.cs:line 228

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1617584
Build error leg or test failing: System.Net.Sockets.Tests.NoParallelSelectTests.Select_LargeNumber_Succcess
Pull request: #134838

Error Message

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

{
  "ErrorMessage": "[FAIL] System.Net.Sockets.Tests.NoParallelSelectTests.Select_LargeNumber_Succcess",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1617584
Error message validated: [[FAIL] System.Net.Sockets.Tests.NoParallelSelectTests.Select_LargeNumber_Succcess]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 10/1/2026 1:35:17 AM UTC

Report

Build	Repository	Test	Pull Request
1617584	dotnet/runtime	System.Net.Sockets.Tests.NoParallelSelectTests.Select_LargeNumber_Succcess	#134838

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
1	1	1

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