Failing test: System.Security.Cryptography.X509Certificates.Tests.X509CertificateLoaderTests_FromByteArray.LoadWrappingCertificate_PEM_WithTrailingData

[AndyAyersMS]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1265300
Build error leg or test failing: System.Security.Cryptography.X509Certificates.Tests.X509CertificateLoaderTests_FromByteSpan.LoadWrappingCertificate_PEM_WithTrailingData
Pull request: #123569

Error Message

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

{
  "ErrorMessage": "System.Security.Cryptography.X509Certificates.Tests.X509CertificateLoaderTests_FromByteArray.LoadWrappingCertificate_PEM_WithTrailingData [FAIL]",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1265300
Error message validated: [System.Security.Cryptography.X509Certificates.Tests.X509CertificateLoaderTests_FromByteArray.LoadWrappingCertificate_PEM_WithTrailingData [FAIL]]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 1/26/2026 4:21:20 PM UTC

Report

Build	Definition	Test	Pull Request
1265300	dotnet/runtime	System.Security.Cryptography.X509Certificates.Tests.X509CertificateLoaderTests_FromFile.LoadWrappingCertificate_PEM_WithTrailingData	#123569

Summary

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

[dotnet-policy-service]

Tagging subscribers to this area: @bartonjs, @vcsjones, @dotnet/area-system-security
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[vcsjones]

Failure:

Console log: 'System.Security.Cryptography.Tests' from job 8c8945a3-6bb6-48c4-bca6-3a401e82bd1e workitem 5e965397-4e82-4847-b27b-0098e499c90e (azurelinux.3.amd64.open.rt) executed on machine a007YEC running Linux-6.6.112.1-2.azl3-x86_64-with-glibc2.38
+ export __TestArchitecture=x64
+ __TestArchitecture=x64
+ ./RunTests.sh --runtime-path /datadisks/disk1/work/AD6C09A1/p

System.Security.Cryptography.X509Certificates.Tests.X509CertificateLoaderTests_FromByteSpan.LoadWrappingCertificate_PEM_WithTrailingData [FAIL]
      Assert.Throws() Failure: No exception was thrown
      Expected: typeof(System.Security.Cryptography.CryptographicException)
      Stack Trace:
        /_/src/libraries/Common/tests/System/Security/Cryptography/X509Certificates/X509CertificateLoaderTests.cs(317,0): at System.Security.Cryptography.X509Certificates.Tests.X509CertificateLoaderTests.LoadWrappingCertificate_PEM_WithTrailingData()
           at System.RuntimeMethodHandle.InvokeMethod(ObjectHandleOnStack target, Void** arguments, ObjectHandleOnStack sig, BOOL isConstructor, ObjectHandleOnStack result)
           at System.RuntimeMethodHandle.InvokeMethod(ObjectHandleOnStack target, Void** arguments, ObjectHandleOnStack sig, BOOL isConstructor, ObjectHandleOnStack result)
        /_/src/coreclr/System.Private.CoreLib/src/System/Reflection/MethodBaseInvoker.CoreCLR.cs(36,0): at System.Reflection.MethodBaseInvoker.InterpretedInvoke_Method(Object obj, IntPtr* args)
        /_/src/libraries/System.Private.CoreLib/src/System/Reflection/RuntimeMethodInfo.cs(134,0): at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)