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[ci-scan] Build break: runtime-diagnostics cDAC leg fails - missing mscordbi_universal.dll #133282

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[ci-scan] Build break: runtime-diagnostics cDAC leg fails - missing mscordbi_universal.dll#133282
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max-charlamb
Labels
Known Build ErrorUse this to report build issues in the .NET Helix tabagentic-workflowsarea-Diagnostics-cdacblocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'
Milestone
12.0.0

Description

@github-actions
github-actions
bot
opened on Sep 5, 2026

A build break in the runtime-diagnostics pipeline (AzDO definition 309, dnceng-public/public, branch main) fails the cDAC leg (cDAC_windows_x64_release) because the matching universal DBI is missing when -cdacPath is supplied.

The failing step is eng\build.ps1, which errors out with a missing mscordbi_universal.dll:

D:\a\_work\1\s\eng\build.ps1 : -cdacPath requires the matching universal DBI at 'D:\a\_work\1\s\artifacts\cdac\mscordbi_universal.dll'.

This is a build-break (product build fails), so it blocks the required runtime-diagnostics gate and matches on every affected build regardless of a specific test.

  • Pipeline: runtime-diagnostics (definition 309)
  • First build it occurred: build 1580149
  • Also present in follow-up build: 1582309
  • Failing leg: cDAC_windows_x64_release
{
  "ErrorMessage": "-cdacPath requires the matching universal DBI",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}
Agentic workflow metadata (ci-failure-scan)
  • Definition: 309 (runtime-diagnostics)
  • Classification: build break (product build; cDAC leg)
  • Source build: 1580149; follow-up: 1582309 (signature persists)
  • Verified match count: 1 hits in failure.log

Note

This issue was filed automatically by the ci-failure-scan agentic workflow (AI/Copilot-generated).

Generated by CI Outer-Loop Failure Scanner · opus48 · 413.5 AIC · ⌖ 11.1 AIC · ⊞ 20.7K · ◷

Report

Build Repository Step Name Console log Pull Request
1595722 dotnet/runtime Build / Test Log #133878
1595271 dotnet/runtime Build / Test Log #133850
1594914 dotnet/runtime Build / Test Log
1594508 dotnet/runtime Build / Test Log #130050
1594483 dotnet/runtime Build / Test Log
1594257 dotnet/runtime Build / Test Log #130050
1593994 dotnet/runtime Build / Test Log #130050
1593912 dotnet/runtime Build / Test Log #133774
1593941 dotnet/runtime Build / Test Log #133730
1593895 dotnet/runtime Build / Test Log #133656
1593890 dotnet/runtime Build / Test Log
1593638 dotnet/runtime Build / Test Log #133748
1593621 dotnet/runtime Build / Test Log #133747
1593460 dotnet/runtime Build / Test Log #131826
1593419 dotnet/runtime Build / Test Log #133726
1593405 dotnet/runtime Build / Test Log #133730
1593175 dotnet/runtime Build / Test Log #133704
1592572 dotnet/runtime Build / Test Log #133688
1592474 dotnet/runtime Build / Test Log #133595
1592262 dotnet/runtime Build / Test Log #133656
1592185 dotnet/runtime Build / Test Log #132720
1592068 dotnet/runtime Build / Test Log #133656
1592016 dotnet/runtime Build / Test Log #130885
1591981 dotnet/runtime Build / Test Log
1591880 dotnet/runtime Build / Test Log #133535
1591761 dotnet/runtime Build / Test Log #133188
1591589 dotnet/runtime Build / Test Log #131589
1591567 dotnet/runtime Build / Test Log #133635
1591551 dotnet/runtime Build / Test Log #133634
1591515 dotnet/runtime Build / Test Log #133633
1591433 dotnet/runtime Build / Test Log #130050
1591397 dotnet/runtime Build / Test Log #133188
1590833 dotnet/runtime Build / Test Log #133595
1590309 dotnet/runtime Build / Test Log
1590087 dotnet/runtime Build / Test Log #133535
1590050 dotnet/runtime Build / Test Log #133545
1590016 dotnet/runtime Build / Test Log #133188
1589521 dotnet/runtime Build / Test Log #133463
1589394 dotnet/runtime Build / Test Log #133509
1589095 dotnet/runtime Build / Test Log #133501
1588848 dotnet/runtime Build / Test Log #133486
1588804 dotnet/runtime Build / Test Log #133480
1588522 dotnet/runtime Build / Test Log #133463
1588392 dotnet/runtime Build / Test Log
1588364 dotnet/runtime Build / Test Log #133344
1588251 dotnet/runtime Build / Test Log #130050
1588115 dotnet/runtime Build / Test Log #132425
1587542 dotnet/runtime Build / Test Log #133344
1587466 dotnet/runtime Build / Test Log #132584
1587235 dotnet/runtime Build / Test Log #131995
1587028 dotnet/runtime Build / Test Log #133344
1586852 dotnet/runtime Build / Test Log #133344
1586636 dotnet/runtime Build / Test Log
1586497 dotnet/runtime Build / Test Log #130050
1586258 dotnet/runtime Build / Test Log #133359
1586071 dotnet/runtime Build / Test Log #132819
1585398 dotnet/runtime Build / Test Log #133340
1585077 dotnet/runtime Build / Test Log
1584963 dotnet/runtime Build / Test Log #130050
1584744 dotnet/runtime Build / Test Log
1584637 dotnet/runtime Build / Test Log #130050
1584624 dotnet/runtime Build / Test Log #133265
1584496 dotnet/runtime Build / Test Log #133309
1584464 dotnet/runtime Build / Test Log #133308
1584432 dotnet/runtime Build / Test Log #133265
1584276 dotnet/runtime Build / Test Log #132720
1584265 dotnet/runtime Build / Test Log #133294
1584156 dotnet/runtime Build / Test Log
1583986 dotnet/runtime Build / Test Log #133203
1583967 dotnet/runtime Build / Test Log #133265
1583856 dotnet/runtime Build / Test Log #131826

Summary

24-Hour Hit Count 7-Day Hit Count 1-Month Count
0 0 71

Activity

  1. github-actions
    added
    blocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'
    Known Build ErrorUse this to report build issues in the .NET Helix tab
    agentic-workflows
    on Sep 5, 2026
  2. dotnet-policy-service
    added
    untriagedNew issue has not been triaged by the area owner
    on Sep 5, 2026
  3. jeffschwMSFT
    added
    area-Diagnostics-cdac
    on Sep 8, 2026

  4. dotnet-policy-service commented on Sep 8, 2026

    @dotnet-policy-service
    dotnet-policy-serviceBot
    on Sep 8, 2026 – with Dotnet Policy Service
    Contributor

    Tagging subscribers to this area: @steveisok, @tommcdon, @dotnet/dotnet-diag
    See info in area-owners.md if you want to be subscribed.

  5. lateralusX
    added this to the 12.0.0 milestone on Sep 10, 2026
  6. lateralusX
    assigned
    max-charlamb
    on Sep 10, 2026
  7. lateralusX
    removed
    untriagedNew issue has not been triaged by the area owner
    on Sep 10, 2026
  8. steveisok
    assigned
    max-charlamb
    and unassigned
    max-charlamb
    on Sep 10, 2026

  9. steveisok commented on Sep 10, 2026

    @steveisok
    steveisok
    on Sep 10, 2026
    Member

    Appears like Max is already on the case - 89f2236

  10. max-charlamb commented on Sep 11, 2026

    @max-charlamb
    max-charlamb
    on Sep 11, 2026
    Member

    The fixes are being tracked in these two PRs:

    • Fix runtime diagnostics SOS test configuration #133734 updates runtime-diagnostics to publish and restore the cDAC transport package produced by the runtime build. This keeps mscordaccore_universal and mscordbi_universal on the exact version expected by the runtime under test, fixing the missing/mismatched DBI setup reported here.
    • Test dual runtimes in cDAC-only mode diagnostics#6026 updates DualRuntimes for strict cDAC-only mode. Desktop .NET Framework does not support cDAC, so the test now verifies the expected data-access failure after selecting the desktop runtime instead of expecting desktop DAC commands to succeed.

    End-to-end validation is running in runtime-diagnostics build 1593582, using runtime#133734 with diagnosticsBranch=refs/pull/6026/merge.

  11. github-actions commented on Sep 14, 2026

    @github-actions
    github-actionsBot
    on Sep 14, 2026 – with GitHub Actions
    ContributorAuthor

    Workflow artifact: ci-fix
    Artifact kind: handoff
    Linked KBE: #133282

    Note

    AI/Copilot-generated triage note.

    This Known Build Error is a build-break in cDAC/DBI packaging whose correct fix depends on how the runtime-diagnostics build produces the universal DBI; I could not produce a safe non-guessing diff, so I am looping in owners rather than muting.

    Root cause (best analysis)

    On runtime-diagnostics (def 309), the cDAC_windows_x64_release leg fails in eng\build.ps1 with -cdacPath requires the matching universal DBI at '...\artifacts\cdac\mscordbi_universal.dll'. The build passes -cdacPath but the universal mscordbi_universal.dll is not present at the expected artifacts\cdac path when the guard runs, so the product build fails and blocks the required gate. This is either a build-ordering/layout regression (the universal DBI is not built or not copied to artifacts\cdac before the -cdacPath guard) or a mismatch between the guard and where the DBI is emitted. Determining the correct fix requires knowledge of the cDAC/DBI build wiring, so I am handing off rather than guessing.

    Evidence

    Suggested reviewers / area contacts

    • Area owners (area-Diagnostics-cdac): @tommcdon, @dotnet/dotnet-diag

    A fix likely involves ensuring mscordbi_universal.dll is built and staged into artifacts\cdac before the -cdacPath guard in eng\build.ps1 runs on the cDAC windows-x64 leg (or aligning the guard with the actual DBI output path).

    Structured data:

    {
  "artifact_kind": "handoff",
  "linked_kbe": 133282,
  "workflow_artifact": "ci-fix"
}

    Generated by CI Outer-Loop Failure Fixer · opus48 · 444.8 AIC · ⌖ 28.9 AIC · ⊞ 19.6K · ◷

  12. max-charlamb
    added a commit that references this issue on Sep 14, 2026

    Fix runtime diagnostics SOS test configuration (#133734)

    ca8ebfb
  13. jtschuster
    added a commit that references this issue on Sep 18, 2026

    Fix runtime diagnostics SOS test configuration (dotnet#133734)

    0b3595c

  14. kotlarmilos commented on Oct 2, 2026

    @kotlarmilos
    kotlarmilos
    on Oct 2, 2026
    Member

    Should have been fixed in #133282 (comment)

  15. kotlarmilos
    closed this as completedon Oct 2, 2026
  16. github-actions
    locked and limited conversation to collaborators on Nov 2, 2026
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Known Build ErrorUse this to report build issues in the .NET Helix tabagentic-workflowsarea-Diagnostics-cdacblocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'

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