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runtime/race: external_cgo_thread passed unexpectedly in TestOutput #32653

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cuonglm opened this issue Jun 17, 2019 · 5 comments
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runtime/race: external_cgo_thread passed unexpectedly in TestOutput #32653

cuonglm opened this issue Jun 17, 2019 · 5 comments
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FrozenDueToAge NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.

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@cuonglm
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cuonglm commented Jun 17, 2019

https://storage.googleapis.com/go-build-log/63849344/linux-amd64-race_657c252c.log

Output extracted from test log:

--- FAIL: TestOutput (9.68s)
    output_test.go:76: failed test case external_cgo_thread, expect:
        ==================
        WARNING: DATA RACE
        Read at 0x[0-9,a-f]+ by main goroutine:
          main\.main\(\)
              .*/main\.go:34 \+0x[0-9,a-f]+
        
        Previous write at 0x[0-9,a-f]+ by goroutine [0-9]:
          main\.goCallback\(\)
              .*/main\.go:27 \+0x[0-9,a-f]+
          main._cgoexpwrap_[0-9a-z]+_goCallback\(\)
              .*_cgo_gotypes\.go:[0-9]+ \+0x[0-9,a-f]+
        
        Goroutine [0-9] \(running\) created at:
          runtime\.newextram\(\)
              .*/runtime/proc.go:[0-9]+ \+0x[0-9,a-f]+
        ==================
        got:
@katiehockman
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Can you please provide more information on what action we should be taking with this issue report? It looks like this is just from a trybots run in https://go-review.googlesource.com/c/go/+/182561, and that the builders are passing for linux-amd64-race right now.

@katiehockman katiehockman added the WaitingForInfo Issue is not actionable because of missing required information, which needs to be provided. label Jun 18, 2019
@cuonglm
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cuonglm commented Jun 19, 2019

@katiehockman it's a data race, so it can happen this time but not that time.

@katiehockman katiehockman changed the title runtime: pprof test data race runtime/pprof/internal/profile: TestOutput data race Jun 19, 2019
@katiehockman
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/cc @hyangah

@katiehockman katiehockman added NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. and removed WaitingForInfo Issue is not actionable because of missing required information, which needs to be provided. labels Jun 19, 2019
@rsc rsc changed the title runtime/pprof/internal/profile: TestOutput data race runtime/race: external_cgo_thread passed unexpectedly in TestOutput Jun 28, 2019
@bcmills
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bcmills commented Dec 4, 2020

I think #43008 is a duplicate of this issue, but I've added a bit more information there already so I'm going to dup this one to that instead.

@bcmills
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bcmills commented Dec 4, 2020

Duplicate of #43008

@bcmills bcmills marked this as a duplicate of #43008 Dec 4, 2020
@cuonglm cuonglm closed this as completed Dec 7, 2020
@golang golang locked and limited conversation to collaborators Dec 7, 2021
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