Uninstall() should not fail if a cgroup directory doesn't exist

It can be occurred if two controllers are mounted together or if Uninstall() is called on a error path.

PiperOrigin-RevId: 218723886
Change-Id: I69d7a3c0685a7da38527ea8b7b301dbe96268285

1 files changed, 11 insertions, 0 deletions

diff --git a/runsc/cgroup/cgroup_test.go b/runsc/cgroup/cgroup_test.go
index 4a4713d4f..ecc184f74 100644
--- a/runsc/cgroup/cgroup_test.go
+++ b/runsc/cgroup/cgroup_test.go
@@ -18,6 +18,17 @@ import (
 	"testing"
 )
 
+func TestUninstallEnoent(t *testing.T) {
+	c := Cgroup{
+		// set a non-existent name
+		Name: "runsc-test-uninstall-656e6f656e740a",
+		Own:  true,
+	}
+	if err := c.Uninstall(); err != nil {
+		t.Errorf("Uninstall() failed: %v", err)
+	}
+}
+
 func TestCountCpuset(t *testing.T) {
 	for _, tc := range []struct {
 		str   string