os/exec: context becomes done, but Cmd.Run() still blocks for a long time

[sxllwx]

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

$ go version
go version go1.19.2 linux/amd64

Does this issue reproduce with the latest release?

yes

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

go env Output

$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/ubuntu/.cache/go-build"
GOENV="/home/ubuntu/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/home/ubuntu/.gvm/pkgsets/go1.19.2/global/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/home/ubuntu/.gvm/pkgsets/go1.19.2/global"
GOPRIVATE=""
GOPROXY="https://goproxy.woa.com,direct"
GOROOT="/home/ubuntu/.gvm/gos/go1.19.2"
GOSUMDB="sum.woa.com+643d7a06+Ac5f5VOC4N8NUXdmhbm8pZSXIWfhek5JSmWdWrq7pLX4"
GOTMPDIR=""
GOTOOLDIR="/home/ubuntu/.gvm/gos/go1.19.2/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.19.2"
GCCGO="gccgo"
GOAMD64="v1"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/dev/null"
GOWORK=""
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 -Wl,--no-gc-sections -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build3184007767=/tmp/go-build -gno-record-gcc-switches"

What did you do?

golang-code: https://go.dev/play/p/YZ7rxFZihNv

main.sh:

#!/bin/bash
sleep 10000

please chmod +x ./main.sh

What did you expect to see?

It is expected that after one second, cmd.Run() exits and returns the error that the process is Killed.

What did you see instead?

cmd.Run() blocks forever and cannot return.

[gopherbot]

Change https://go.dev/cl/442500 mentions this issue: os/exec: exit cmd.Run() when context becomes done

[bcmills]

Duplicate of #23019

[bcmills]

#50436 proposes a solution to this that does not break backward compatibility.