Merge pull request #1 from Jeremy-boo/fix/cgroup2_path_not_found

Fix the error "cgroup2 path not found"

exec/executor_common_linux.go

@@ -163,19 +163,22 @@ func execForHangAction(uid string, ctx context.Context, expModel *spec.ExpModel,
 	if isCgroupV2 {
 		g, err := cgroupsv2.PidGroupPath(int(pid))
 		if err != nil {
-			sprintf := fmt.Sprintf("loading cgroup2 for %d, err ", pid, err.Error())
+			sprintf := fmt.Sprintf("loading cgroup2 for %d, err %s", pid, err.Error())
 			return spec.ReturnFail(spec.OsCmdExecFailed, sprintf)
 		}
-		cg, err := cgroupsv2.LoadManager("/sys/fs/cgroup/", g)
+
+		cgPath := path.Join(cgroupRoot, g)
+		cg, err := cgroupsv2.LoadManager(cgroupRoot, cgPath)
 		if err != nil {
 			if err != cgroupsv2.ErrCgroupDeleted {
+				if cg, err = cgroupsv2.NewManager(cgroupRoot, cgPath, nil); err != nil {
+					sprintf := fmt.Sprintf("cgroups V2 new manager failed, %s", err.Error())
+					return spec.ReturnFail(spec.OsCmdExecFailed, sprintf)
+				}
+			} else {
 				sprintf := fmt.Sprintf("cgroups V2 load failed, %s", err.Error())
 				return spec.ReturnFail(spec.OsCmdExecFailed, sprintf)
 			}
-			if cg, err = cgroupsv2.NewManager("/sys/fs/cgroup", cgroupRoot, nil); err != nil {
-				sprintf := fmt.Sprintf("cgroups V2 new manager failed, %s", err.Error())
-				return spec.ReturnFail(spec.OsCmdExecFailed, sprintf)
-			}
 		}
 		if err := command.Start(); err != nil {
 			sprintf := fmt.Sprintf("command start failed, %s", err.Error())