podman: Unable to expose rclone mount to host when using rootless

/kind bug

Description

Can’t mount/expose mount when using rootless. Also, can’t access the port.

Steps to reproduce the issue:

1. podman pull rclone/rclone:latest

2. mkdir -p ~/data/mount

podman run --rm \
--privileged \
--volume ~/rclone:/config/rclone \
--volume ~/data/mount:/data:shared \
--user 1000:1000 \
--volume /etc/passwd:/etc/passwd:ro --volume /etc/group:/etc/group:ro \
--device /dev/fuse \
--security-opt apparmor=unconfined \
-p 5590:5590 \
rclone/rclone \
mount remote-crypt:/media /data \
--allow-other \
--rc --rc-addr localhost:5590 --rc-no-auth

Describe the results you received:

The rclone command seems to be working, but the mount isn’t exposed to the host, apparently. 2021/05/04 14:02:10 NOTICE: Serving remote control on http://localhost:5590/ If you ls ~/data/mount, it’ll be empty.

However, it works if you run the podman command with sudo.

Describe the results you expected:

Show the mount in ~/data/mount.

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

It works if you run the podman command with sudo.

Output of podman version:

Version:      3.0.1
API Version:  3.0.0
Go Version:   go1.15.8
Built:        Fri Feb 19 13:56:17 2021
OS/Arch:      linux/amd64

Output of podman info --debug:

host:
  arch: amd64
  buildahVersion: 1.19.4
  cgroupManager: systemd
  cgroupVersion: v2
  conmon:
    package: conmon-2.0.26-1.fc33.x86_64
    path: /usr/bin/conmon
    version: 'conmon version 2.0.26, commit: 777074ecdb5e883b9bec233f3630c5e7fa37d521'
  cpus: 4
  distribution:
    distribution: fedora
    version: "33"
  eventLogger: journald
  hostname: localhost.localdomain
  idMappings:
    gidmap:
    - container_id: 0
      host_id: 1000
      size: 1
    - container_id: 1
      host_id: 100000
      size: 65536
    uidmap:
    - container_id: 0
      host_id: 1000
      size: 1
    - container_id: 1
      host_id: 100000
      size: 65536
  kernel: 5.11.12-200.fc33.x86_64
  linkmode: dynamic
  memFree: 5937692672
  memTotal: 8203341824
  ociRuntime:
    name: crun
    package: crun-0.19-1.fc33.x86_64
    path: /usr/bin/crun
    version: |-
      crun version 0.19
      commit: e67a75672412975916dac6b87f8346f870e4b99a
      spec: 1.0.0
      +SYSTEMD +SELINUX +APPARMOR +CAP +SECCOMP +EBPF +CRIU +YAJL
  os: linux
  remoteSocket:
    path: /run/user/1000/podman/podman.sock
  security:
    apparmorEnabled: false
    capabilities: CAP_CHOWN,CAP_DAC_OVERRIDE,CAP_FOWNER,CAP_FSETID,CAP_KILL,CAP_NET_BIND_SERVICE,CAP_SETFCAP,CAP_SETGID,CAP_SETPCAP,CAP_SETUID,CAP_SYS_CHROOT
    rootless: true
    seccompEnabled: true
    selinuxEnabled: true
  slirp4netns:
    executable: /usr/bin/slirp4netns
    package: slirp4netns-1.1.9-1.fc33.x86_64
    version: |-
      slirp4netns version 1.1.9
      commit: 4e37ea557562e0d7a64dc636eff156f64927335e
      libslirp: 4.3.1
      SLIRP_CONFIG_VERSION_MAX: 3
      libseccomp: 2.5.0
  swapFree: 3944370176
  swapTotal: 4100976640
  uptime: 43h 40m 50s (Approximately 1.79 days)
registries:
  search:
  - registry.fedoraproject.org
  - registry.access.redhat.com
  - registry.centos.org
  - docker.io
store:
  configFile: /home/server/.config/containers/storage.conf
  containerStore:
    number: 10
    paused: 0
    running: 0
    stopped: 10
  graphDriverName: overlay
  graphOptions:
    overlay.mount_program:
      Executable: /usr/bin/fuse-overlayfs
      Package: fuse-overlayfs-1.5.0-1.fc33.x86_64
      Version: |-
        fusermount3 version: 3.9.3
        fuse-overlayfs: version 1.5
        FUSE library version 3.9.3
        using FUSE kernel interface version 7.31
  graphRoot: /home/server/.local/share/containers/storage
  graphStatus:
    Backing Filesystem: btrfs
    Native Overlay Diff: "false"
    Supports d_type: "true"
    Using metacopy: "false"
  imageStore:
    number: 12
  runRoot: /run/user/1000/containers
  volumePath: /home/server/.local/share/containers/storage/volumes
version:
  APIVersion: 3.0.0
  Built: 1613753777
  BuiltTime: Fri Feb 19 13:56:17 2021
  GitCommit: ""
  GoVersion: go1.15.8
  OsArch: linux/amd64
  Version: 3.0.1

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

podman-3.0.1-1.fc33.x86_64

Have you tested with the latest version of Podman and have you checked the Podman Troubleshooting Guide? (https://github.com/containers/podman/blob/master/troubleshooting.md)

No