Test Failure: Microsoft.Diagnostics.DataContractReader.DumpTests.AsyncContinuationDumpTests.ThreadLocalContinuation_IsContinuation

[JulieLeeMSFT]

Failed in (1):

• runtime-diagnostics 20260430.38

Console Log: Console Log
Source: runtime-diagnostics / (Debian.13.Arm32.Open)AzureLinux.3.Arm64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-helix-arm32v7 / Microsoft.Diagnostics.DataContractReader.DumpTests.AsyncContinuationDumpTests.ThreadLocalContinuation_IsContinuation

Failed tests:

- (Debian.13.Arm32.Open)AzureLinux.3.Arm64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-helix-arm32v7
- (Ubuntu.2204.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-22.04-helix-amd64
- (Ubuntu.2204.ArmArch.Open)AzureLinux.3.Arm64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-22.04-helix-arm64v8
  - CdacXPlatDumpTests_host_linux_arm64_dumps_linux_x64
  - CdacXPlatDumpTests_host_linux_arm_dumps_linux_x64
  - CdacXPlatDumpTests_host_linux_x64_dumps_linux_x64
  - Microsoft.Diagnostics.DataContractReader.DumpTests.AsyncContinuationDumpTests.ThreadLocalContinuation_IsContinuation

Error Message:

System.BadImageFormatException : Unknown file format.

Stack Trace:

/_/src/libraries/System.Reflection.Metadata/src/System/Reflection/PortableExecutable/PEHeaders.cs(107,0): at System.Reflection.PortableExecutable.PEHeaders..ctor(Stream peStream, Int32 size, Boolean isLoadedImage)
/_/src/libraries/System.Reflection.Metadata/src/System/Reflection/PortableExecutable/PEReader.cs(322,0): at System.Reflection.PortableExecutable.PEReader.InitializePEHeaders()
/_/src/libraries/System.Reflection.Metadata/src/System/Reflection/PortableExecutable/PEReader.cs(301,0): at System.Reflection.PortableExecutable.PEReader.get_PEHeaders()
/_/src/libraries/System.Reflection.Metadata/src/System/Reflection/PortableExecutable/PEReader.cs(487,0): at System.Reflection.PortableExecutable.PEReader.GetSectionData(Int32 relativeVirtualAddress)
/__w/1/s/src/native/managed/cdac/tests/DumpTests/ClrMdDumpHost.cs(82,0): at Microsoft.Diagnostics.DataContractReader.DumpTests.ClrMdDumpHost.ReadFromTarget(UInt64 address, Span`1 buffer)
/__w/1/s/src/native/managed/cdac/Microsoft.Diagnostics.DataContractReader/ContractDescriptorTarget.cs(906,0): at Microsoft.Diagnostics.DataContractReader.ContractDescriptorTarget.DataTargetDelegates.ReadFromTarget(UInt64 address, Span`1 buffer)
/__w/1/s/src/native/managed/cdac/tests/DumpTests/AsyncContinuationDumpTests.cs(131,0): at Microsoft.Diagnostics.DataContractReader.DumpTests.AsyncContinuationDumpTests.ThreadLocalContinuation_IsContinuation(TestConfiguration config)

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[rcj1]

Fixed in #127491