[ci-scan] Test failure: Loader/classloader/regressions/InvalidFriendAssemblyName under R2R/crossgen2

[github-actions]

Caution

agentic threat detected
Threat detection flagged this output in warn mode. Manual review is REQUIRED before any follow-up automation.

Details

The threat detection results could not be parsed.

Review the workflow run logs for details.

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1504535
Build error leg or test failing: coreclr Pri1 Runtime Tests Run R2R_CG2 (linux x64 / linux arm64 / linux_musl x64 / windows x64 / x86 / arm64) checked - Loader/classloader/regressions/InvalidFriendAssemblyName

The InvalidFriendAssemblyName loader regression test fails in the R2R / crossgen2 legs of runtime-coreclr outerloop (definition 108). The test expects a System.IO.FileLoadException to be thrown when an assembly declares an invalid friend reference, but under R2R/crossgen2 no exception is thrown, so Assert.Throws<FileLoadException> fails.

This began reproducing after PR #127180 ("Preserve invalid friend assembly error", merged 2026-07-10T21:13Z) changed the invalid-friend-assembly error behavior. Both the source build (finished 2026-07-11T14:31Z) and the follow-up build 1504742 (finished 2026-07-11T21:43Z) failed with this signature across multiple queues, so the failure reproduces well after that merge. Related: #127180.

Error Details

Running test: Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
Xunit.Sdk.ThrowsException: Assert.Throws() Failure: No exception was thrown
Expected: typeof(System.IO.FileLoadException)
   at Xunit.Assert.ThrowsImpl(Type exceptionType, Exception exception, Func`2 inspector) in /_/src/arcade/src/Microsoft.DotNet.XUnitAssert/src/ExceptionAsserts.cs:line 506
   at Xunit.Assert.Throws[T](Func`1 testCode) in /_/src/arcade/src/Microsoft.DotNet.XUnitAssert/src/ExceptionAsserts.cs:line 153
   at InvalidFriendAssemblyName.TestEntryPoint()
Failed test: Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll

Error Message

{
  "ErrorMessage": [
    "Assert.Throws() Failure: No exception was thrown",
    "Expected: typeof(System.IO.FileLoadException)",
    "at InvalidFriendAssemblyName.TestEntryPoint()"
  ],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

---

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.

Note

This issue was generated by an AI/Copilot CI triage workflow.

Generated by CI Outer-Loop Failure Scanner · 529.2 AIC · ⊞ 19.5K · ◷

Report

Build	Repository	Test	Pull Request
1512035	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1511873	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1511844	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1511874	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1511842	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1511615	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1511496	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll	#129717
1511203	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll	#119674
1510989	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1511202	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll	#119674
1511200	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll	#119674
1509858	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1509620	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1509610	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1509619	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1509609	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1509372	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1508395	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1508388	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1508674	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1507810	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1507628	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1507626	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1507586	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1507585	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1507404	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1506634	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1505655	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1505531	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1505533	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1505532	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1505421	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1505420	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1505357	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1505304	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1505145	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1505037	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1504997	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1505001	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1504999	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1504991	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1504989	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1504935	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
1504917	dotnet/runtime	Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
11	44	44

[github-actions]

Caution

agentic threat detected
Threat detection flagged this output in warn mode. Manual review is REQUIRED before any follow-up automation.

Details

The threat detection results could not be parsed.

Review the workflow run logs for details.

Workflow artifact: ci-fix
Artifact kind: handoff
Linked KBE: #130569

Note

AI/Copilot-generated triage note (ci-failure-fix). No automated code change was produced: this is a ReadyToRun/crossgen2 product behavior regression in the loader, which is outside small-fix bounds, so I am looping in owners rather than editing the test (updating the test to not expect the exception would mask a real behavior gap).

Root cause (read-only analysis)

Loader/classloader/regressions/InvalidFriendAssemblyName fails only on the R2R / crossgen2 legs (R2R_CG2, coreclr outerloop def 108):

Assert.Throws() Failure: No exception was thrown
Expected: typeof(System.IO.FileLoadException)
   at InvalidFriendAssemblyName.TestEntryPoint()

The test declares an invalid friend reference (InternalsVisibleTo with both PublicKey and PublicKeyToken) and asserts that loading throws FileLoadException. Under the JIT legs it throws as expected; under R2R/crossgen2 no exception is thrown, so the assert fails.

This started reproducing right after #127180 ("Preserve invalid friend assembly error", area-VM-coreclr, merged 2026-07-10T21:13Z) changed the invalid-friend-assembly error path to propagate the parse failure as an inner exception. The failure first appears on the source build finished 2026-07-11T14:31Z and repeats on follow-up build 1504742 across multiple R2R queues, so it reproduces stably after that merge. Two independent evidence points support the attribution: (a) first failure strictly follows that merge, and (b) the change touches exactly the invalid-friend-assembly error path this test exercises. The likely gap is that the new error-propagation path is not exercised the same way when the assembly is precompiled by crossgen2 (the friend-visibility check / error surfacing differs on the R2R load path).

Evidence

• Failing build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1504535 ; follow-up 1504742.
• Test: src/tests/Loader/classloader/regressions/InvalidFriendAssemblyName.
• Suspected regressing change: Preserve invalid friend assembly error #127180 (high confidence).

Suggested reviewers / area contacts

• Landed the friend-assembly error change: @elinor-fung.
• Area owners (area-VM-coreclr): @agocke.

A fix would likely restore the invalid-friend-assembly error surfacing on the crossgen2/R2R assembly-load path so the FileLoadException is thrown consistently with the JIT path.

Generated by CI Outer-Loop Failure Fixer · 299.1 AIC · ⊞ 18K · ◷

[JulieLeeMSFT]

@jtschuster, PTAL. NEW mass failure across all crossgen2/r2r pipelines (esp. r2r-extra). (227 test(s) failed in 7 pipeline(s))

Failed in (7):

• runtime-coreclr crossgen2 20260713.1
• runtime-coreclr crossgen2 outerloop 20260713.1
• runtime-coreclr crossgen2-composite 20260713.1
• runtime-coreclr crossgen2-composite gcstress 20260712.1
• runtime-coreclr outerloop 20260714.1
• runtime-coreclr r2r 20260713.1
• runtime-coreclr r2r-extra 20260712.1

[VincentBu]

Failed in: runtime-coreclr r2r 20260713.1

Failed tests:

R2R-CG2 linux arm Checked @ (Debian.13.Arm32.Open)AzureLinux.3.Arm64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-helix-arm32v7@sha256:cc5720152b9ddb1df305525253e31936794ffff0d440007bb170ec3bf6a5f7ae
- Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
R2R-CG2 linux arm Checked no_tiered_compilation @ (Debian.13.Arm32.Open)AzureLinux.3.Arm64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-helix-arm32v7@sha256:cc5720152b9ddb1df305525253e31936794ffff0d440007bb170ec3bf6a5f7ae
- Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
R2R-CG2 linux arm64 Checked @ AzureLinux.3.Arm64.Open
- Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
R2R-CG2 linux arm64 Checked no_tiered_compilation @ AzureLinux.3.Arm64.Open
- Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
R2R-CG2 linux x64 Checked @ AzureLinux.3.Amd64.Open
- Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
R2R-CG2 linux x64 Checked no_tiered_compilation @ AzureLinux.3.Amd64.Open
- Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
R2R-CG2 windows x86 Checked @ Windows.10.Amd64.Open
- Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
R2R-CG2 windows x86 Checked no_tiered_compilation @ Windows.10.Amd64.Open
- Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
R2R-CG2 windows arm64 Checked @ Windows.11.Arm64.Open
- Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
R2R-CG2 windows arm64 Checked no_tiered_compilation @ Windows.11.Arm64.Open
- Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
R2R-CG2 windows x64 Checked @ Windows.10.Amd64.Open
- Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
R2R-CG2 windows x64 Checked no_tiered_compilation @ Windows.10.Amd64.Open
- Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
R2R-CG2 osx arm64 Checked @ OSX.26.Arm64.Open
- Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll
R2R-CG2 osx arm64 Checked no_tiered_compilation @ OSX.26.Arm64.Open
- Loader/classloader/regressions/InvalidFriendAssemblyName/InvalidFriendAssemblyName/InvalidFriendAssemblyName.dll

Error message:

Assert.Throws() Failure: No exception was thrown
Expected: typeof(System.IO.FileLoadException)

Stack trace:

   at Xunit.Assert.ThrowsImpl(Type exceptionType, Exception exception, Func`2 inspector) in /_/src/arcade/src/Microsoft.DotNet.XUnitAssert/src/ExceptionAsserts.cs:line 506
   at Xunit.Assert.Throws[T](Func`1 testCode) in /_/src/arcade/src/Microsoft.DotNet.XUnitAssert/src/ExceptionAsserts.cs:line 153
   at InvalidFriendAssemblyName.TestEntryPoint()
   at Program.<<Main>$>g__TestExecutor86|0_87(StreamWriter tempLogSw, StreamWriter statsCsvSw, <>c__DisplayClass0_0&)