podman: rhel78: mountpoint for devices not found

Is this a BUG REPORT or FEATURE REQUEST? (leave only one on its own line)

/kind bug

Description

podman run with a non-root user does not work. The operating system is rhel78. slirp4netns and podman are installed by yum. Also user.max_user_namespaces=28633 is configured on the system.

Steps to reproduce the issue:

1. run the following command with a non-root user.

podman run --rm -i -t busybox echo hello

Describe the results you received:

Error: container_linux.go:349: starting container process caused "process_linux.go:297: applying cgroup configuration for process caused \"mountpoint for devices not found\"": OCI runtime error

Describe the results you expected:

hello

Additional information you deem important (e.g. issue happens only occasionally):

It works with root user. Also, runc works with a non-root user. The following is a part of debug log of the podman:

time="2020-07-16T02:07:37-05:00" level=debug msg="Received: -1"
time="2020-07-16T02:07:37-05:00" level=debug msg="Cleaning up container 94adf317c678e7500e59cd943089b79636acb63a9e07897b4511262ab9d3342d"
time="2020-07-16T02:07:37-05:00" level=debug msg="Tearing down network namespace at /run/user/2050/netns/cni-cd27ba28-5a12-05fb-ae23-a4e7aaef8fef for container 94adf317c678e7500e59cd943089b79636acb63a9e07897b4511262ab9d3342d"
time="2020-07-16T02:07:37-05:00" level=debug msg="Error unmounting /home/user1/.local/share/containers/storage/overlay/9fbdc45f91a461d4cb1a7e4bbebe93defa88efbacf533ef5c415aee948dae09c/merged with fusermount3 - exec: \"fusermount3\": executable file not found in $PATH"
time="2020-07-16T02:07:37-05:00" level=debug msg="unmounted container \"94adf317c678e7500e59cd943089b79636acb63a9e07897b4511262ab9d3342d\""
time="2020-07-16T02:07:37-05:00" level=debug msg="ExitCode msg: \"time=\\\"2020-07-16t02:07:37-05:00\\\" level=warning msg=\\\"signal: killed\\\"\\ntime=\\\"2020-07-16t02:07:37-05:00\\\" level=error msg=\\\"container_linux.go:349: starting container process caused \\\\\\\"process_linux.go:297: applying cgroup configuration for process caused \\\\\\\\\\\\\\\"mountpoint for devices not found\\\\\\\\\\\\\\\"\\\\\\\"\\\"\\ncontainer_linux.go:349: starting container process caused \\\"process_linux.go:297: applying cgroup configuration for process caused \\\\\\\"mountpoint for devices not found\\\\\\\"\\\": oci runtime error\""
time="2020-07-16T02:07:37-05:00" level=error msg="time=\"2020-07-16T02:07:37-05:00\" level=warning msg=\"signal: killed\"\ntime=\"2020-07-16T02:07:37-05:00\" level=error msg=\"container_linux.go:349: starting container process caused \\\"process_linux.go:297: applying cgroup configuration for process caused \\\\\\\"mountpoint for devices not found\\\\\\\"\\\"\"\ncontainer_linux.go:349: starting container process caused \"process_linux.go:297: applying cgroup configuration for process caused \\\"mountpoint for devices not found\\\"\": OCI runtime error"

Output of podman version:

Version:            1.6.4
RemoteAPI Version:  1
Go Version:         go1.12.12
OS/Arch:            linux/amd64

Output of podman info --debug:

debug:
  compiler: gc
  git commit: ""
  go version: go1.12.12
  podman version: 1.6.4
host:
  BuildahVersion: 1.12.0-dev
  CgroupVersion: v1
  Conmon:
    package: conmon-2.0.15-1.el7_8.x86_64
    path: /usr/bin/conmon
    version: 'conmon version 2.0.15, commit: 372b4a12f1c2df4f70c280d41173b60acd3f1260'
  Distribution:
    distribution: '"rhel"'
    version: "7.8"
  IDMappings:
    gidmap:
    - container_id: 0
      host_id: 2050
      size: 1
    - container_id: 1
      host_id: 558752
      size: 65536
    uidmap:
    - container_id: 0
      host_id: 2050
      size: 1
    - container_id: 1
      host_id: 558752
      size: 65536
  MemFree: 16207659008
  MemTotal: 67250630656
  OCIRuntime:
    name: runc
    package: runc-1.0.0-67.rc10.el7_8.x86_64
    path: /usr/bin/runc
    version: 'runc version spec: 1.0.1-dev'
  SwapFree: 7665086464
  SwapTotal: 7665086464
  arch: amd64
  cpus: 8
  eventlogger: file
  hostname: tds-sbc2-el
  kernel: 3.10.0-1127.10.1.el7.x86_64
  os: linux
  rootless: true
  slirp4netns:
    Executable: /usr/bin/slirp4netns
    Package: slirp4netns-0.4.3-4.el7_8.x86_64
    Version: |-
      slirp4netns version 0.4.3
      commit: 2244b9b6461afeccad1678fac3d6e478c28b4ad6
  uptime: 910h 24m 25.53s (Approximately 37.92 days)
registries:
  blocked: null
  insecure: null
  search:
  - registry.access.redhat.com
  - registry.redhat.io
  - docker.io
store:
  ConfigFile: /home/user1/.config/containers/storage.conf
  ContainerStore:
    number: 10
  GraphDriverName: overlay
  GraphOptions:
    overlay.mount_program:
      Executable: /usr/bin/fuse-overlayfs
      Package: fuse-overlayfs-0.7.2-6.el7_8.x86_64
      Version: |-
        fuse-overlayfs: version 0.7.2
        FUSE library version 3.6.1
        using FUSE kernel interface version 7.29
  GraphRoot: /home/user1/.local/share/containers/storage
  GraphStatus:
    Backing Filesystem: xfs
    Native Overlay Diff: "false"
    Supports d_type: "true"
    Using metacopy: "false"
  ImageStore:
    number: 3
  RunRoot: /run/user/2050/containers
  VolumePath: /home/user1/.local/share/containers/storage/volumes

Package info (e.g. output of rpm -q podman or apt list podman):

podman-1.6.4-18.el7_8.x86_64

Additional environment details (AWS, VirtualBox, physical, etc.): physical server