Test failure: baseservices/threading/regressions/115178/115178/115178.cmd

[SakeTao]

Failed in: runtime-coreclr outerloop 20250527.7

Failed tests:

coreclr windows x86 Checked @ Windows.10.Amd64.Open
    - baseservices/threading/regressions/115178/115178/115178.cmd
coreclr windows arm64 Checked no_tiered_compilation @ Windows.11.Arm64.Open
    - baseservices/threading/regressions/115178/115178/115178.cmd

Error message:

 
Return code:      1
Raw output file:      C:hwB6310A12wB0C00963uploads
egressions115178115178output.txt
Raw output:
BEGIN EXECUTION
 "C:hwB6310A12pcorerun.exe" -p "System.Reflection.Metadata.MetadataUpdater.IsSupported=false" -p "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization=true"  115178.dll 
Running RunTestUsingInfiniteWait test.
Waiting for thread to enter wait...
Starting thread waiting on event.
Queue user APC.
Waiting for APC to execute...
Signaling wait event.
Waiting for thread to leave wait...
Stopping thread waiting on event.
RunTestUsingInfiniteWait test executed.
Running RunTestUsingTimedWait test.
Waiting for thread to enter wait...
Starting thread waiting on event.
Queue user APC's.
Error waiting on event, wait returned too early.
Stopping thread waiting on event.
Waiting for thread to leave wait...
RunTestUsingTimedWait test executed.
Running RunTestInterruptInfiniteWait test.
Waiting for thread to enter wait...
Starting thread waiting on event.
Queue user APC.
Waiting for APC to execute...
Interrupting thread wait...
Thread was interrupted as expected.
Stopping thread waiting on event.
Signaling wait event.
Waiting for thread to leave wait...
RunTestInterruptInfiniteWait test executed.
Xunit.Sdk.EqualException: Assert.Equal() Failure: Values differ
Expected: 100
Actual:   5
   at Xunit.Assert.Equal[T](T expected, T actual, IEqualityComparer`1 comparer) in /_/src/arcade/src/Microsoft.DotNet.XUnitAssert/src/EqualityAsserts.cs:line 174
   at Xunit.Assert.Equal[T](T expected, T actual) in /_/src/arcade/src/Microsoft.DotNet.XUnitAssert/src/EqualityAsserts.cs:line 96
   at __GeneratedMainWrapper.Main()
Expected: 100
Actual: 101
END EXECUTION - FAILED
FAILED
Test failed. Trying to see if dump file was created in C:cores since 5/28/2025 2:45:59 AM
Finished looking for *.dmp. No new files created.
Test Harness Exitcode is : 1
To run the test:
Set up CORE_ROOT and run.
> C:hwB6310A12wB0C00963e�aseservices	hreading	hreading_group1../regressions/115178/115178/115178.cmd

Stack trace:

   at Xunit.Assert.True(Nullable`1 condition, String userMessage) in /_/src/arcade/src/Microsoft.DotNet.XUnitAssert/src/BooleanAsserts.cs:line 141
   at TestLibrary.OutOfProcessTest.RunOutOfProcessTest(String assemblyPath, String testPathPrefix)
   at Program.<<Main>$>g__TestExecutor75|0_76(StreamWriter tempLogSw, StreamWriter statsCsvSw, <>c__DisplayClass0_0&)

Known Issue Error Message

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

{
  "ErrorMessage": "Failed test: baseservices/threading/regressions/115178",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1052601
Error message validated: [Failed test: baseservices/threading/regressions/115178]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 5/28/2025 2:29:26 PM UTC

Report

Summary

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

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[jakobbotsch]

Test introduced in #116001, cc @lateralusX

[lateralusX]

OK, my plan was to run outer test loop on that PR, but it got merged before I had a chance to trigger the test suite. It is probably a timer resolution issue, I see that CoreCLR internal waits uses lowres ticks and test uses StopWatch and higres ticks. I can create a PR, that output the waited time and run it on outer test loop and see what we get on these platforms and then adjust the accepted deviation accordingly.