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net: data race netFD.destroy #6165

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dvyukov opened this issue Aug 16, 2013 · 1 comment
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net: data race netFD.destroy #6165

dvyukov opened this issue Aug 16, 2013 · 1 comment
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@dvyukov
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dvyukov commented Aug 16, 2013

17795:749d02164043, linux/amd64
On net/http tests race detector episodically says:

WARNING: DATA RACE
Read by goroutine 44:
  net.(*pollDesc).Close()
      src/pkg/net/fd_poll_runtime.go:41 +0x35
  net.(*netFD).destroy()
      src/pkg/net/fd_unix.go:102 +0x44
  net.(*netFD).writeUnlock()
      src/pkg/net/fd_unix.go:153 +0x59
  net.(*netFD).Write()
      src/pkg/net/fd_unix.go:320 +0xd7
  net.(*conn).Write()
      src/pkg/net/net.go:131 +0x129
  net.(*TCPConn).Write()
      src/pkg/net/dial.go:1 +0x70
  bufio.(*Writer).flush()
      src/pkg/bufio/bufio.go:494 +0x1e3
  bufio.(*Writer).Flush()
      src/pkg/bufio/bufio.go:483 +0x46
  net/http.(*persistConn).writeLoop()
      src/pkg/net/http/transport.go:799 +0x2a4

Previous write by goroutine 37:
  net.(*pollDesc).Close()
      src/pkg/net/fd_poll_runtime.go:45 +0x81
  net.(*netFD).destroy()
      src/pkg/net/fd_unix.go:102 +0x44
  net.(*netFD).decref()
      src/pkg/net/fd_unix.go:121 +0x54
  net.(*netFD).Close()
      src/pkg/net/fd_unix.go:170 +0xdd
  net.(*conn).Close()
      src/pkg/net/net.go:139 +0xfd
  net.(*TCPConn).Close()
      src/pkg/net/dial.go:1 +0x4d
  net/http.(*persistConn).closeLocked()
      src/pkg/net/http/transport.go:944 +0xab
  net/http.(*persistConn).close()
      src/pkg/net/http/transport.go:938 +0x76
  net/http.(*Transport).CloseIdleConnections()
      src/pkg/net/http/transport.go:226 +0x1aa
  net/http/httptest.(*Server).Close()
      src/pkg/net/http/httptest/server.go:171 +0xdd
  net/http_test.TestOptions()
      src/pkg/net/http/serve_test.go:1487 +0x1477
  testing.tRunner()
      src/pkg/testing/testing.go:387 +0x13d

Goroutine 44 (running) created at:
  net/http.(*Transport).dialConn()
      src/pkg/net/http/transport.go:529 +0x9c8
  net/http.func·016()
      src/pkg/net/http/transport.go:419 +0x91

Goroutine 37 (finished) created at:
  testing.RunTests()
      src/pkg/testing/testing.go:467 +0xb9e
  testing.Main()
      src/pkg/testing/testing.go:399 +0xb4
  main.main()
      net/http/_test/_testmain.go:413 +0xdc
@dvyukov
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dvyukov commented Aug 16, 2013

Comment 1:

This issue was closed by revision 727dd08.

Status changed to Fixed.

@rsc rsc added this to the Go1.2 milestone Apr 14, 2015
@rsc rsc removed the go1.2 label Apr 14, 2015
@golang golang locked and limited conversation to collaborators Jun 24, 2016
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