[ci-scan] Test failure: GC/API/GC/Collect_Aggressive_LargePages GC heap init fails with 0x8007000E #130302

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3. JulieLeeMSFT commented on Jul 7, 2026

   

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   deplicate #130266
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10. dotnet-policy-service commented on Jul 9, 2026

    

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    Tagging subscribers to this area: @anicka-net, @dotnet/gc
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11. janvorli commented on Jul 14, 2026

    

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    These issues are all in gc-standalone pipeline. I can repro it locally. The GC initialization fails in case large pages are requested with GC in segments mode.
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14. github-actions commented on Jul 23, 2026

    

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    Workflow artifact: ci-fix
    Artifact kind: handoff
    Linked KBE: #130302

    Root-cause analysis (read-only hand-off)

    GC/API/GC/Collect_Aggressive_LargePages fails during runtime startup on the runtime-coreclr gc-standalone (def 146) linux-x64 checked leg: the GC cannot commit a 3 GiB large-pages region, so coreclr_initialize aborts:

    GC: Committing 3221225472 bytes for a region failed
    GC heap initialization failed with error 0x8007000E   (E_OUTOFMEMORY)
    BEGIN: coreclr_initialize failed - Error: 0x8007000e
    Expected: 100   Actual: 255
    

    This is a GC / large-pages product+infra defect, not a test issue. It is a distinct exit-255 heap-init-OOM signature of the same test tracked with a SIGSEGV (exit 139) in #130211 — Build Analysis will not auto-associate them, but both share first-occurrence build 1470804 (2026-06-18) and are very likely the same broken large-pages GC scenario. GC product fixes (and the question of whether the large-pages queue can even reserve 3 GiB) are out of bounds for an automated PR, and there is no correct test-side change.

    Evidence

    • Source build 1491722, persists in follow-up 1494444.
    • Earliest in window: 1470804 (2026-06-18); preceding 1466400 (2026-06-16) is clean.
    • Likely same underlying defect as [ci-scan] Test failure: GC/API/GC/Collect_Aggressive_LargePages segfaults with SIGSEGV #130211 (consider consolidating).

    Suggested reviewers / area contacts

    • area-GC-coreclr: @anicka-net, @dotnet/gc

    Note

    This root-cause hand-off was generated by an AI/Copilot agent (ci-failure-fix). No code change was produced because the failure is a GC heap-initialization/large-pages defect that must not be worked around in test code. Please verify before acting.

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    Generated by CI Outer-Loop Failure Fixer · 520.3 AIC · ⌖ 18.1 AIC · ⊞ 17.1K · ◷
15. VincentBu commented on Jul 28, 2026

    

    VincentBu

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    Failed in: gc-standalone 20260726.1

    Failed tests:

    coreclr linux x64 Checked gcstandalone @ AzureLinux.3.Amd64.Open
    - GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd
    coreclr linux arm64 Checked gcstandalone @ AzureLinux.3.Arm64.Open
    - GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd
    
    

    Error message:

    GC: Committing 3221225472 bytes for a region failed
    GC heap initialization failed with error 0x8007000E
    BEGIN: coreclr_initialize failed - Error: 0x8007000e
    END: coreclr_initialize failed - Error: 0x8007000e
    
    Return code:      1
    Raw output file:      /datadisks/disk1/work/B2B109D7/w/AABF095C/uploads/API/GC/Collect_Aggressive_LargePages/output.txt
    Raw output:
    BEGIN EXECUTION
    /datadisks/disk1/work/B2B109D7/p/corerun -p System.Reflection.Metadata.MetadataUpdater.IsSupported=false -p System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization=true Collect_Aggressive_LargePages.dll ''
    Exe path: /datadisks/disk1/work/B2B109D7/p/corerun
    Properties:
        TRUSTED_PLATFORM_ASSEMBLIES = /datadisks/disk1/work/B2B109D7/p/System.Reflection.Metadata.dll:/datadisks/disk1/work/B2B109D7/p/System.Threading.Channels.dll:/datadisks/disk1/work/B2B109D7/p/System.IO.Packaging.dll:/datadisks/disk1/work/B2B109D7/p/System.Diagnostics.Debug.dll:/datadisks/disk1/work/B2B109D7/p/xunit.runner.utility.netcoreapp10.dll:/datadisks/disk1/work/B2B109D7/p/Microsoft.Bcl.Memory.dll:/datadisks/disk1/work/B2B109D7/p/System.IO.FileSystem.Primitives.dll:/datadisks/disk1/work/B2B109D7/p/System.Diagnostics.StackTrace.dll:/datadisks/disk1/work/B2B109D7/p/System.Net.ServerSentEvents.dll:/datadisks/disk1/work/B2B109D7/p/System.Security.Cryptography.Cng.dll:/datadisks/disk1/work/B2B109D7/p/Microsoft.Extensions.Options.ConfigurationExtensions.dll:/datadisks/disk1/work/B2B109D7/p/System.ComponentModel.DataAnnotations.dll:/datadisks/disk1/work/B2B109D7/p/System.Net.Ping.dll:/datadisks/disk1/work/B2B109D7/p/System.Configuration.dll:/datadisks/disk1/work/B2B109D7/p/System.Text.Json.dll:/datadisks/disk1/work/B2B109D7/p/System.Text.Encoding.dll:/datadisks/disk1/work/B2B109D7/p/System.Numerics.Vectors.dll:/datadisks/disk1/work/B2B109D7/p/Microsoft.CodeAnalysis.dll:/datadisks/disk1/work/B2B109D7/p/System.Globalization.dll:/datadisks/disk1/work/B2B109D7/p/System.Diagnostics.Contracts.dll:/datadisks/disk1/work/B2B109D7/p/Microsoft.Bcl.Numerics.dll:/datadisks/disk1/work/B2B109D7/p/Microsoft.Extensions.Options.dll:/datadisks/disk1/work/B2B109D7/p/System.Private.Xml.Linq.dll:/datadisks/disk1/work/B2B109D7/p/System.Reflection.Extensions.dll:/datadisks/disk1/work/B2B109D7/p/System.Transactions.dll:/datadisks/disk1/work/B2B109D7/p/System.Collections.Immutable.dll:/datadisks/disk1/work/B2B109D7/p/System.Threading.Overlapped.dll:/datadisks/disk1/work/B2B109D7/p/System.IO.Pipes.AccessControl.dll:/datadisks/disk1/work/B2B109D7/p/System.Runtime.Serialization.Primitives.dll:/datadisks/disk1/work/B2B109D7/p/Microsoft.Extensions.Caching.Memory.dll:/datadisks/disk1/work/B2B109D7/p/System.Reflection.dll:/datadisks/disk1/work/B2B109D7/p/Microsoft.Bcl.TimeProvider.dll:/datadisks/disk1/work/B2B109D7/p/Microsoft.Extensions.FileProviders.Physical.dll:/datadisks/disk1/work/B2B109D7/p/System.Xml.Linq.dll:/datadisks/disk1/work/B2B109D7/p/Microsoft.Extensions.Diagnostics.Abstractions.dll:/datadisks/disk1/work/B2B109D7/p/System.Runtime.Serialization.Xml.dll:/datadisks/disk1/work/B2B109D7/p/FSharp.Core.dll:/datadisks/disk1/work/B2B109D7/p/Microsoft.Extensions.Hosting.dll:/datadisks/disk1/work/B2B109D7/p/System.Xml.Serialization.dll:/datadisks/disk1/work/B2B109D7/p/System.Management.dll:/datadisks/disk1/work/B2B109D7/p/xunit.runner.reporters.netcoreapp10.dll:/datadisks/disk1/work/B2B109D7/p/Microsoft.Diagnostics.FastSerialization.dll:/datadisks/disk1/work/B2B109D7/p/Microsoft.CodeAnalysis.CSharp.dll:/datadisks/disk1/work/B2B109D7/p/System.Net.WebProxy.dll:/datadisks/disk1/work/B2B109D7/p/System.Drawing.Primitives.dll:/datadisks/disk1/work/B2B109D7/p/System.Runtime.Numerics.dll:/datadisks/disk1/work/B2B109D7/p/System.Net.NameResolution.dll:/datadisks/disk1/work/B2B109D7/p/System.IO.dll:/datadisks/disk1/work/B2B109D7/p/System.Linq.Parallel.dll:/datadisks/disk1/work/B2B109D7/p/Microsoft.Bcl.Cryptography.dll:/datadisks/disk1/work/B2B109D7/p/System.DirectoryServices.dll:/datadisks/disk1/work/B2B109D7/p/Micros
    

    Stack trace:

       at Xunit.Assert.True(Nullable`1 condition, String userMessage) in /_/src/arcade/src/Microsoft.DotNet.XUnitAssert/src/BooleanAsserts.cs:line 135
       at Program.<<Main>$>g__TestExecutor24|0_25(StreamWriter tempLogSw, StreamWriter statsCsvSw, <>c__DisplayClass0_0&)
    
16. janvorli commented on Aug 4, 2026

    

    janvorli

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    @JulieLeeMSFT we still seem to be running the gc-standalone leg. I have thought you have paused it.
17. janvorli commented on Aug 7, 2026

    

    janvorli

    on Aug 7, 2026

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    The test is incompatible with GC segments mode which we test in the gc-standalone leg, because it sets the DOTNET_GCHeapHardLimit and DOTNET_GCLargePages together and that combination cannot work with segments.
    I'll leave the issue open until the gc-standalone leg is really suspended.
18. janvorli

    modified the milestones: 11.0.0, Future on Aug 7, 2026
19. kotlarmilos

    marked [ci-scan] Test failure: GC/API/GC/Collect_Aggressive_LargePages heap commit fails (0x8007000E) #134293 as a duplicate of this issue on Sep 22, 2026