System.IO.Pipes.Tests.NamedPipeTest_ServerInOut_ClientInOut_Synchronous.ClonedServer_ActsAsOriginalServer test hang

[jkotas]

Hit in #72573: https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-72573-merge-95ae7524d1c140d087/System.IO.Pipes.Tests/1/console.139c5f5b.log?helixlogtype=result

C:\h\w\A9AA093D\w\A9F509DD\e>"C:\h\w\A9AA093D\p\dotnet.exe" exec --runtimeconfig System.IO.Pipes.Tests.runtimeconfig.json --depsfile System.IO.Pipes.Tests.deps.json xunit.console.dll System.IO.Pipes.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing  
  Discovering: System.IO.Pipes.Tests (method display = ClassAndMethod, method display options = None)
  Discovered:  System.IO.Pipes.Tests (found 473 of 509 test cases)
  Starting:    System.IO.Pipes.Tests (parallel test collections = on, max threads = 4)
   System.IO.Pipes.Tests: [Long Running Test] 'System.IO.Pipes.Tests.NamedPipeTest_ServerInOut_ClientInOut_Synchronous.ClonedServer_ActsAsOriginalServer', Elapsed: 00:02:11
   System.IO.Pipes.Tests: [Long Running Test] 'System.IO.Pipes.Tests.NamedPipeTest_ServerInOut_ClientInOut_Synchronous.ClonedServer_ActsAsOriginalServer', Elapsed: 00:04:11
   System.IO.Pipes.Tests: [Long Running Test] 'System.IO.Pipes.Tests.NamedPipeTest_ServerInOut_ClientInOut_Synchronous.ClonedServer_ActsAsOriginalServer', Elapsed: 00:06:11
   System.IO.Pipes.Tests: [Long Running Test] 'System.IO.Pipes.Tests.NamedPipeTest_ServerInOut_ClientInOut_Synchronous.ClonedServer_ActsAsOriginalServer', Elapsed: 00:08:11
   System.IO.Pipes.Tests: [Long Running Test] 'System.IO.Pipes.Tests.NamedPipeTest_ServerInOut_ClientInOut_Synchronous.ClonedServer_ActsAsOriginalServer', Elapsed: 00:10:11
   System.IO.Pipes.Tests: [Long Running Test] 'System.IO.Pipes.Tests.NamedPipeTest_ServerInOut_ClientInOut_Synchronous.ClonedServer_ActsAsOriginalServer', Elapsed: 00:12:11
['System.IO.Pipes.Tests' END OF WORK ITEM LOG: Command timed out, and was killed]

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Issue Details

---

Hit in #72573: https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-72573-merge-95ae7524d1c140d087/System.IO.Pipes.Tests/1/console.139c5f5b.log?helixlogtype=result

C:\h\w\A9AA093D\w\A9F509DD\e>"C:\h\w\A9AA093D\p\dotnet.exe" exec --runtimeconfig System.IO.Pipes.Tests.runtimeconfig.json --depsfile System.IO.Pipes.Tests.deps.json xunit.console.dll System.IO.Pipes.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing  
  Discovering: System.IO.Pipes.Tests (method display = ClassAndMethod, method display options = None)
  Discovered:  System.IO.Pipes.Tests (found 473 of 509 test cases)
  Starting:    System.IO.Pipes.Tests (parallel test collections = on, max threads = 4)
   System.IO.Pipes.Tests: [Long Running Test] 'System.IO.Pipes.Tests.NamedPipeTest_ServerInOut_ClientInOut_Synchronous.ClonedServer_ActsAsOriginalServer', Elapsed: 00:02:11
   System.IO.Pipes.Tests: [Long Running Test] 'System.IO.Pipes.Tests.NamedPipeTest_ServerInOut_ClientInOut_Synchronous.ClonedServer_ActsAsOriginalServer', Elapsed: 00:04:11
   System.IO.Pipes.Tests: [Long Running Test] 'System.IO.Pipes.Tests.NamedPipeTest_ServerInOut_ClientInOut_Synchronous.ClonedServer_ActsAsOriginalServer', Elapsed: 00:06:11
   System.IO.Pipes.Tests: [Long Running Test] 'System.IO.Pipes.Tests.NamedPipeTest_ServerInOut_ClientInOut_Synchronous.ClonedServer_ActsAsOriginalServer', Elapsed: 00:08:11
   System.IO.Pipes.Tests: [Long Running Test] 'System.IO.Pipes.Tests.NamedPipeTest_ServerInOut_ClientInOut_Synchronous.ClonedServer_ActsAsOriginalServer', Elapsed: 00:10:11
   System.IO.Pipes.Tests: [Long Running Test] 'System.IO.Pipes.Tests.NamedPipeTest_ServerInOut_ClientInOut_Synchronous.ClonedServer_ActsAsOriginalServer', Elapsed: 00:12:11
['System.IO.Pipes.Tests' END OF WORK ITEM LOG: Command timed out, and was killed]

Author:	jkotas
Assignees:	-
Labels:	area-System.IO, untriaged
Milestone:	-

[jkotas]

cc @stephentoub Potential regression introduced by #72503 . We have not seen hang like this before.

[stephentoub]

Duplicate of #72585.

I don't believe it's a product regression, but rather this is a new configuration for this particular test (it previously never ran on two InOut named pipes opened for synchronous I/O). I'd opened #72526 for another variation of this, but it appears to be wider spread with this configuration. I'm going to remove the configuration entirely until we can figure it out (and double check that it still hangs prior to my changes, as was the case with the other cited test).