fork/exec broken pipe

[cxpbbs]

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

$ go version
1.7.3

Does this issue reproduce with the latest release?

Can't reproduce

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

Linux 3.10.0-327.36.58.4.x86_64 #1 SMP x86_64 GNU/Linux

go env Output

$ go env
GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/root/gopath"
GORACE=""
GOROOT="/usr/lib/golang"
GOTOOLDIR="/usr/lib/golang/pkg/tool/linux_amd64"
GCCGO="/usr/bin/gccgo"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build779701576=/tmp/go-build -gno-record-gcc-switches"
CXX="g++"
CGO_ENABLED="1"
PKG_CONFIG="pkg-config"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"

What did you do?

Loop creation process：
for i := 0; i < 1000; i++ {
cmd[i] = exec.Command("sleep", "1")
err := cmd[i].Start()
if err != nil {
fmt.Println("start process error:", err)
os.Exit(2)
}
}
for i := 0; i < 1000; i++ {
err := cmd[i].Wait()
if err != nil {
fmt.Println("wait error:", err)
os.Exit(3)
}
}

What did you expect to see?

Successfully created 1000 processes

What did you see instead?

errmsg：
fork/exec:broken pipe:""

View the source code, found that the error code may be as follows:

1. in func startProcess(name string, argv []string, attr *ProcAttr) (p *Process, err error):
   from: https://github.com/golang/go/blob/release-branch.go1.7/src/os/exec_posix.go +47
   pid, h, e := syscall.StartProcess(name, argv, sysattr)
   if e != nil {
   return nil, &PathError{"fork/exec", name, e}
   }

2)func forkExec(argv0 string, argv []string, attr *ProcAttr) (pid int, err error) maybe return epipe
from:https://github.com/golang/go/blob/release-branch.go1.7/src/syscall/exec_unix.go + 209

    Close(p[1])
n, err = readlen(p[0], (*byte)(unsafe.Pointer(&err1)), int(unsafe.Sizeof(err1)))
Close(p[0])
if err != nil || n != 0 {
	if n == int(unsafe.Sizeof(err1)) {
		err = Errno(err1)
	}
	if err == nil {
		err = EPIPE   //The error can happen here
	}

	// Child failed; wait for it to exit, to make sure
	// the zombies don't accumulate.
	_, err1 := Wait4(pid, &wstatus, 0, nil)
	for err1 == EINTR {
		_, err1 = Wait4(pid, &wstatus, 0, nil)
	}
	return 0, err
}

// Read got EOF, so pipe closed on exec, so exec succeeded.
return pid, nil

Now I can't reproduce the error. Can you tell me what scenes might return this error when reading pipe?

[ianlancetaylor]

Go 1.7 is no longer supported.

I was unable to reproduce the problem with either Go 1.7 or tip.

[gopherbot]

Timed out in state WaitingForInfo. Closing.

(I am just a bot, though. Please speak up if this is a mistake or you have the requested information.)