Test Infrastructure Failure: System.IO.IOException: Unknown error 42424

[kunalspathak]

I am seeing some failures in gc-extra pipelines for linux arm64

Test Infrastructure Failure: System.IO.IOException: Unknown error 42424 : '/root/helix/work/workitem/uploads/Arrays/lcs/lcs2_d'
at System.IO.FileSystem.CreateDirectory(String fullPath)
at System.IO.Directory.CreateDirectory(String path)
at TestLibrary.OutOfProcessTest.RunOutOfProcessTest(String basePath, String assemblyPath)
Expected: True
Actual:   False

E.g. https://dev.azure.com/dnceng/public/_build/results?buildId=1799737&view=ms.vss-test-web.build-test-results-tab&runId=47999058&paneView=debug&resultId=110210

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Issue Details

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I am seeing some failures in gc-extra pipelines for linux arm64

Test Infrastructure Failure: System.IO.IOException: Unknown error 42424 : '/root/helix/work/workitem/uploads/Arrays/lcs/lcs2_d'
at System.IO.FileSystem.CreateDirectory(String fullPath)
at System.IO.Directory.CreateDirectory(String path)
at TestLibrary.OutOfProcessTest.RunOutOfProcessTest(String basePath, String assemblyPath)
Expected: True
Actual:   False

E.g. https://dev.azure.com/dnceng/public/_build/results?buildId=1799737&view=ms.vss-test-web.build-test-results-tab&runId=47999058&paneView=debug&resultId=110210

Author:	kunalspathak
Assignees:	-
Labels:	arch-arm64, area-System.IO, os-linux, untriaged, blocking-clean-ci-optional
Milestone:	-

[kunalspathak]

cc: trylek

[adamsitnik]

@tmds I have tried to google for the 42424 error code, but I was not able to find any meaningful results. Is it even possible that mkdir has failed with such an error?

[jakobbotsch]

Fixed by #72298