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TCPListener.Close() can't works #43895

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zwtop opened this issue Jan 25, 2021 · 1 comment
Closed

TCPListener.Close() can't works #43895

zwtop opened this issue Jan 25, 2021 · 1 comment
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@zwtop
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zwtop commented Jan 25, 2021

What version of Go are you using (go version)?

$ go version
go version go1.15.6 linux/amd64

Does this issue reproduce with the latest release?

maybe

What operating system and processor architecture are you using (go env)?

go env Output
$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/root/.cache/go-build"
GOENV="/root/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/opt/golang/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/opt/golang"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/opt/golang/src/github.com/ofnet/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build063384986=/tmp/go-build -gno-record-gcc-switches"

What did you do?

When I run my test case, it's timeout while close TCPListener. Under what circumstances will it be unable to close TCPListener?
This is the stack of go test.

goroutine 51 [semacquire, 10 minutes]:
internal/poll.runtime_Semacquire(0xc000397828)
	/opt/hostedtoolcache/go/1.14.13/x64/src/runtime/sema.go:61 +0x42
internal/poll.(*FD).Close(0xc000397800, 0xc000397800, 0x0)
	/opt/hostedtoolcache/go/1.14.13/x64/src/internal/poll/fd_unix.go:109 +0x8f
net.(*netFD).Close(0xc000397800, 0x44, 0x1)
	/opt/hostedtoolcache/go/1.14.13/x64/src/net/fd_unix.go:184 +0x4f
net.(*TCPListener).close(...)
	/opt/hostedtoolcache/go/1.14.13/x64/src/net/tcpsock_posix.go:156
net.(*TCPListener).Close(0xc000b33460, 0xc0000b1dc8, 0x3)
	/opt/hostedtoolcache/go/1.14.13/x64/src/net/tcpsock.go:274 +0x5e
github.com/osrg/gobgp/server.(*TCPListener).Close(0xc000e8b4f0, 0xc0003e4540, 0xc000d937d0)
	/home/runner/work/ofnet/ofnet/vendor/github.com/osrg/gobgp/server/server.go:45 +0x43
github.com/osrg/gobgp/server.(*BgpServer).Stop.func1(0xc0000c8000, 0xc0000c8000)
	/home/runner/work/ofnet/ofnet/vendor/github.com/osrg/gobgp/server/server.go:1359 +0x177
github.com/osrg/gobgp/server.(*BgpServer).handleMGMTOp(0xc0003b3000, 0xc000e8fa40)
	/home/runner/work/ofnet/ofnet/vendor/github.com/osrg/gobgp/server/server.go:163 +0x47
github.com/osrg/gobgp/server.(*BgpServer).Serve(0xc0003b3000)
	/home/runner/work/ofnet/ofnet/vendor/github.com/osrg/gobgp/server/server.go:283 +0x8b8
created by github.com/contiv/ofnet.createBgpServer
	/home/runner/work/ofnet/ofnet/ofnetBgp.go:559 +0x55
@mvdan
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mvdan commented Jan 25, 2021

The Go project doesn't use the issue tracker for questions. See https://golang.org/wiki/Questions.

@mvdan mvdan closed this as completed Jan 25, 2021
@golang golang locked and limited conversation to collaborators Jan 25, 2022
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@mvdan @gopherbot @zwtop