/sys/fs/cgroup/cpuset.cpus Not Found After Enabling Privileged Mode In Kubernetes

Question

I am currently running into an issue where /sys/fs/cgroup/cpuset.cpus is no longer present in my Kubernetes Pod when I enable Privileged mode. For example: I start off with a very simple pod spec (test.yaml):

apiVersion: v1
kind: Pod
metadata:
  name: test-0
spec:
  nodeSelector:
    kubernetes.io/hostname: "node1"
  containers:
    - name: pod-0
      image: ubuntu:22.04
      command: [ "/bin/sh" , "-c", "tail -f /dev/null" ]
      resources:
        requests:
          cpu: 4
          memory: 2Gi
        limits:
          cpu: 4
          memory: 2Gi

I start the pod and exec into it:

kubectl apply -f test.yaml 
kubectl exec -it test-0 -- /bin/bash

Once in the container, I run the following:

cat /sys/fs/cgroup/cpuset.cpus

The output is 44,46,100,102 i.e the cpus allocated to my pod are printed as expected using cgroupv2 filesystem

Next I remove the pod (kubectl delete pod test-0) and create a new pod with the following spec (note the new privileged securityContext):

apiVersion: v1
kind: Pod
metadata:
  name: test-0
spec:
  nodeSelector:
    kubernetes.io/hostname: "node1"
  containers:
    - name: pod-0
      image: ubuntu:22.04
      securityContext:
        allowPrivilegeEscalation: true
        privileged: true
      command: [ "/bin/sh" , "-c", "tail -f /dev/null" ]
      resources:
        requests:
          cpu: 4
          memory: 2Gi
        limits:
          cpu: 4
          memory: 2Gi

Same as before, I start the pod and exec into it:

kubectl apply -f test.yaml 
kubectl exec -it test-0 -- /bin/bash

Again, once in the container, I run the following:

cat /sys/fs/cgroup/cpuset.cpus

But this time I get the following error:

cat: /sys/fs/cgroup/cpuset.cpus: No such file or directory

Why is this happening whereby adding privileges to my container, it removes the /sys/fs/cgroup/cpuset.cpus file from my container in Kubernetes?

Kubernetes Version: 1.26.2

Cgroup driver: systemd

Containerd Version: 1.6.20

OS Version: Ubuntu 22.04.2

Kernel: 5.15.0-76-generic