syscall: TestGroupCleanup failed

[patricksuo]

Please answer these questions before submitting your issue. Thanks!

1. What version of Go are you using (go version)?
   e0c8af0
2. What operating system and processor architecture are you using (go env)?

GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/root/workspace/Server/go"
GORACE=""
GOROOT="/usr/local/go"
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GO15VENDOREXPERIMENT="1"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0"
CXX="g++"
CGO_ENABLED="1"

1. What did you do?
   If possible, provide a recipe for reproducing the error.
   build go as root
   GOROOT_BOOTSTRAP=/usr/local/go/ ./all.bash
   ( all test pass with normal user account)
2. What did you expect to see?
   pass all test
3. What did you see instead?
   One test failed:

ok      strings 0.113s
ok      sync    0.134s
ok      sync/atomic 0.040s
--- FAIL: TestGroupCleanup (0.01s)
    exec_linux_test.go:204: id command output: uid=0(root) gid=0(root) groups=0(root) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023, expected: uid=0(root) gid=0(root) groups=0(root)
FAIL
FAIL    syscall 0.060s
ok      testing 4.484s

[ianlancetaylor]

What distro are you using? What version?

[patricksuo]

6c13649 fix this.

centos 7.x, selinux-enabled.

uname -a
Linux localhost83 3.10.0-327.13.1.el7.x86_64 #1 SMP Thu Mar 31 16:04:38 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

id --version
id (GNU coreutils) 8.22
...

in coreutils-8.0/src/id.c

  /* If we are on a selinux-enabled kernel and no user is specified,
     get our context. Otherwise, leave the context variable alone -
     it has been initialized known invalid value and will be not
     displayed in print_full_info() */
  if (selinux_enabled && argc == optind)
    {
      if (getcon (&context) && just_context)
        error (EXIT_FAILURE, 0, _("can't get process context"));
    }

   ...

  /* POSIX mandates the precise output format, and that it not include
     any context=... part, so skip that if POSIXLY_CORRECT is set.  */
  if (context != NULL && ! getenv ("POSIXLY_CORRECT"))
    printf (_(" context=%s"), context);