vendor: update google/cadvisor and opencontainers/runc

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

vendor/github.com/opencontainers/runc/libcontainer/cgroups/fs/freezer.go

@@ -3,13 +3,16 @@
 package fs
 
 import (
+	"errors"
 	"fmt"
+	"os"
 	"strings"
 	"time"
 
 	"github.com/opencontainers/runc/libcontainer/cgroups"
 	"github.com/opencontainers/runc/libcontainer/cgroups/fscommon"
 	"github.com/opencontainers/runc/libcontainer/configs"
+	"golang.org/x/sys/unix"
 )
 
 type FreezerGroup struct {
@@ -39,11 +42,11 @@ func (s *FreezerGroup) Set(path string, cgroup *configs.Cgroup) error {
 				return err
 			}
 
-			state, err := fscommon.ReadFile(path, "freezer.state")
+			state, err := s.GetState(path)
 			if err != nil {
 				return err
 			}
-			if strings.TrimSpace(state) == string(cgroup.Resources.Freezer) {
+			if state == cgroup.Resources.Freezer {
 				break
 			}
 
@@ -65,3 +68,30 @@ func (s *FreezerGroup) Remove(d *cgroupData) error {
 func (s *FreezerGroup) GetStats(path string, stats *cgroups.Stats) error {
 	return nil
 }
+
+func (s *FreezerGroup) GetState(path string) (configs.FreezerState, error) {
+	for {
+		state, err := fscommon.ReadFile(path, "freezer.state")
+		if err != nil {
+			// If the kernel is too old, then we just treat the freezer as
+			// being in an "undefined" state.
+			if os.IsNotExist(err) || errors.Is(err, unix.ENODEV) {
+				err = nil
+			}
+			return configs.Undefined, err
+		}
+		switch strings.TrimSpace(state) {
+		case "THAWED":
+			return configs.Thawed, nil
+		case "FROZEN":
+			return configs.Frozen, nil
+		case "FREEZING":
+			// Make sure we get a stable freezer state, so retry if the cgroup
+			// is still undergoing freezing. This should be a temporary delay.
+			time.Sleep(1 * time.Millisecond)
+			continue
+		default:
+			return configs.Undefined, fmt.Errorf("unknown freezer.state %q", state)
+		}
+	}
+}