Scheduler crashes if node.Others[api.GPUSharingDevice] is nil

[igormish]

In pkg/scheduler/plugins/predicates/predicates.go
link

What happened:
fit, err = node.Others[api.GPUSharingDevice].(api.Devices).FilterNode(task.Pod)
If node.Others[api.GPUSharingDevice] is nil it causes volcano to crash as nil is trying run FilterNode(task.Pod)

What you expected to happen:
A check for if node.Others[api.GPUSharingDevice] is nil should be done before FilterNode(task.Pod) is executed

Environment:

• Volcano Version: master
• Kubernetes version: v1.22.17

[igormish]

For example we can add check before as nil is an error as predicate should fail if it does not exist

if d, exist := node.Others[api.GPUSharingDevice].(api.Devices); exist {
  fit, err = d.(api.Devices).FilterNode(task.Pod)
  if err != nil {
    return err
  }
} else {
  return fmt.Errorf("predicates failed because node %s don't have label %s to enable device sharing", node.Name, api.GPUSharingDevice)
}

[wangyang0616]

/assign

[wangyang0616]

/priority important-soon