Assert failure in GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd

[JulieLeeMSFT]

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1501377
Build error leg or test failing: GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd

Error Message

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

{
  "ErrorPattern": "CORECLR! GCCoop::GCCoop \\+.+\\(.+\\)",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1501377
Error message validated: [CORECLR! GCCoop::GCCoop \+.+\(.+\)]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 7/9/2026 8:59:41 PM UTC

Report

Build	Repository	Test	Pull Request
1501377	dotnet/runtime	GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd

Summary

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

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Tagging subscribers to this area: @anicka-net, @dotnet/gc
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[JulieLeeMSFT]

gc-standalone GC/API tests crash on a native pThread assert via GCCoop::GCCoop.
Other failures in the same test: OOM (#130302) and SIGSEGV (#130211).

[JulieLeeMSFT]

Failed tests:

• coreclr windows arm64 Checked gcstandaloneserver @ Windows.11.Arm64.Open
• coreclr windows x64 Checked gcstandaloneserver @ Windows.10.Amd64.Open
  • GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd
  • GC/API/GC/GetConfigurationVariables/GetConfigurationVariables.cmd
  • GC/API/Refresh/Refresh/Refresh.cmd