@@ -4879,3 +4879,16 @@ func (s *delayedReader) Read([]byte) (int, error) {

 	time.Sleep(500 * time.Millisecond)

 	return 0, io.EOF

 }

+

+// #28823 (originally #28639)

+func (s *DockerSuite) TestRunMountReadOnlyDevShm(c *check.C) {

+	testRequires(c, SameHostDaemon, DaemonIsLinux)

+	emptyDir, err := ioutil.TempDir("", "test-read-only-dev-shm")

+	c.Assert(err, check.IsNil)

+	defer os.RemoveAll(emptyDir)

+	out, _, err := dockerCmdWithError("run", "--rm", "--read-only",

+		"-v", fmt.Sprintf("%s:/dev/shm:ro", emptyDir),

+		"busybox", "touch", "/dev/shm/foo")

+	c.Assert(err, checker.NotNil, check.Commentf(out))

+	c.Assert(out, checker.Contains, "Read-only file system")

+}