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Investigate test-child-process-fork-closed-channel-segfault #20836

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@BridgeAR

https://ci.nodejs.org/job/node-test-binary-windows/17414/COMPILED_BY=vs2017,RUNNER=win2016,RUN_SUBSET=3/console

not ok 51 parallel/test-child-process-fork-closed-channel-segfault
  ---
  duration_ms: 0.259
  severity: fail
  exitcode: 1
  stack: |-
    c:\workspace\node-test-binary-windows\test\parallel\test-child-process-fork-closed-channel-segfault.js:70
                throw err;
                ^
    
    Error: write EMFILE
        at ChildProcess.target._send (internal/child_process.js:741:20)
        at ChildProcess.target.send (internal/child_process.js:625:19)
        at Worker.send (internal/cluster/worker.js:40:28)
        at Socket.<anonymous> (c:\workspace\node-test-binary-windows\test\parallel\test-child-process-fork-closed-channel-segfault.js:36:16)
        at Object.onceWrapper (events.js:273:13)
        at Socket.emit (events.js:182:13)
        at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1147:10)

Likely related:

not ok 52 parallel/test-child-process-fork-net
  ---
  duration_ms: 0.354
  severity: fail
  exitcode: 1
  stack: |-
    PARENT: server listening
    CHILD: server listening
    CLIENT: connected
    PARENT: got connection
    CLIENT: connected
    CHILD: got connection
    CLIENT: closed
    CHILD: got connection
    CHILD: got connection
    CLIENT: closed
    CLIENT: connected
    CLIENT: connected
    CLIENT: closed
    CLIENT: closed
    PARENT: server closed
    CHILD: got socket
    CLIENT: got data
    CLIENT: closed
    testSocket, listening
    events.js:167
          throw er; // Unhandled 'error' event
          ^
    
    Error: write EPIPE
        at ChildProcess.target._send (internal/child_process.js:741:20)
        at ChildProcess.target.send (internal/child_process.js:625:19)
        at SocketListSend._request (internal/socket_list.js:20:16)
        at SocketListSend.close (internal/socket_list.js:40:10)
        at Server.close (net.js:1624:24)
        at Socket.<anonymous> (c:\workspace\node-test-binary-windows\test\parallel\test-child-process-fork-net.js:179:16)
        at Socket.emit (events.js:182:13)
        at TCP._handle.close [as _onclose] (net.js:596:12)
    Emitted 'error' event at:
        at process.nextTick (internal/child_process.js:745:39)
        at process._tickCallback (internal/process/next_tick.js:61:11)

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    child_processIssues and PRs related to the child_process subsystem.flaky-testIssues and PRs involving tests that fail intermittently in CI.testIssues and PRs related to Node.js core tests and test infrastructure.windowsIssues and PRs related to the Windows platform.

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