[ci-scan] Test failure: Interop/COM/ComWrappers/GcRestrictedCalloutReversePInvoke times out waiting for concurrent Gen2 GC (linu [Content truncated due to length]

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Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1573173
Build error leg or test failing: linux-arm Checked NativeAOT_Pri1 - azurelinux.3.arm64.open — Interop/COM/ComWrappers/GcRestrictedCalloutReversePInvoke/GcRestrictedCalloutReversePInvoke/GcRestrictedCalloutReversePInvoke.cmd

Pipeline: runtime-nativeaot-outerloop (definition 265), branch main. The GcRestrictedCalloutReversePInvoke test fails on the linux-arm NativeAOT_Pri1 leg because a forced background Gen2 GC never completes within the 30s test window, so Program.ForceBackgroundGen2Collection times out and the xunit assertion fails. The failure reproduces in follow-up build 1573628.

This is a post-close recurrence of #132072, which was filed for the same signature on the windows checked legs of the runtime-coreclr jit-cfg pipeline and closed as fixed on 2026-08-11. The source build 1573173 finished 2026-08-29, well after that close, and now fails on a different leg (linux-arm NativeAOT).

KBE authoring guidance (ci-failure-scan)

• Error Details is for readers. Paste the full exception, stack trace, or build error excerpt so the failure is understandable without opening the raw log.
• Build Analysis parses only the single JSON block under Error Message.
• ErrorMessage is a case-sensitive ordinal String.Contains substring copied verbatim from the failing log.
• Set BuildRetry to true only for a clear infrastructure retry case. ExcludeConsoleLog disables Helix console-log scanning.

Error Details

23:52:56.639 Running test: Interop/COM/ComWrappers/GcRestrictedCalloutReversePInvoke/GcRestrictedCalloutReversePInvoke/GcRestrictedCalloutReversePInvoke.cmd

Return code:      1
BEGIN EXECUTION
/root/helix/work/correlation/nativeaottest.sh .../GcRestrictedCalloutReversePInvoke/ GcRestrictedCalloutReversePInvoke.dll ''
System.Exception: Timed out after 00:00:30 waiting for a concurrent Gen2 GC. Initial count: 0, final count: 157184.
   at Program.ForceBackgroundGen2Collection(TimeSpan)
   at Program.TestEntryPoint()
   at __GeneratedMainWrapper.Main()
Expected: 100
Actual: 101
END EXECUTION - FAILED
   at Xunit.Assert.True(Nullable`1, String)
   at TestLibrary.OutOfProcessTest.RunOutOfProcessTest(String, String)
23:53:26.661 Failed test: Interop/COM/ComWrappers/GcRestrictedCalloutReversePInvoke/GcRestrictedCalloutReversePInvoke/GcRestrictedCalloutReversePInvoke.cmd

Error Message

{
  "ErrorMessage": [
    "GcRestrictedCalloutReversePInvoke.cmd",
    "System.Exception: Timed out after 00:00:30 waiting for a concurrent Gen2 GC.",
    "at Program.ForceBackgroundGen2Collection(TimeSpan)"
  ],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Agentic workflow metadata (ci-failure-scan)

Workflow artifact: ci-failure-scan
Artifact kind: kbe-verification
Verified match count: 2 hits in failure.log

First build it occurred

Source build 1573173 (2026-08-29); reproduces in follow-up build 1573628 (2026-08-29). Post-close recurrence of #132072 (closed 2026-08-11).

Duplicate search

Searched open/closed issues and PRs for waiting for a concurrent Gen2 GC, ForceBackgroundGen2Collection, and GcRestrictedCalloutReversePInvoke. The only prior Known Build Error for this signature, #132072, is closed-as-fixed and scoped to windows checked jit-cfg legs; this recurrence is on the linux-arm NativeAOT leg after that close. Only one closed predecessor exists, so this is a fresh regression rather than a recurring-signature reuse.

Related: #132072

---

Filed by ci-failure-scan (detection only). ci-failure-fix walks open [ci-scan] KBEs and either opens a small fix PR or comments here to loop in owners — it never disables the test.

Generated by CI Outer-Loop Failure Scanner · opus48 · 951 AIC · ⌖ 16 AIC · ⊞ 20.7K · ◷

Report

Build	Repository	Test	Pull Request
1574104	dotnet/runtime	Interop/COM/ComWrappers/GcRestrictedCalloutReversePInvoke/GcRestrictedCalloutReversePInvoke/GcRestrictedCalloutReversePInvoke.cmd
1574041	dotnet/runtime	Interop/COM/ComWrappers/GcRestrictedCalloutReversePInvoke/GcRestrictedCalloutReversePInvoke/GcRestrictedCalloutReversePInvoke.cmd	#132932
1574043	dotnet/runtime	Interop/COM/ComWrappers/GcRestrictedCalloutReversePInvoke/GcRestrictedCalloutReversePInvoke/GcRestrictedCalloutReversePInvoke.cmd	#132933
1573869	dotnet/runtime	Interop/COM/ComWrappers/GcRestrictedCalloutReversePInvoke/GcRestrictedCalloutReversePInvoke/GcRestrictedCalloutReversePInvoke.cmd

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
3	4	4

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