[Bug]: podman run --ipc=host not work as expected

[jeffrey4l]

Issue Description

I am using centos-stream 8 , when running like below:

podman run -it  --rm --ipc host localhost/registry:2 sh

the ipc mode should be host as expected. but i got following

podman  inspect gallant_mahavira | grep -i ipc -C 2
                    "-it",
                    "--rm",
                    "--ipc",
                    "host",
                    "localhost/registry:2",
--
               "ExtraHosts": [],
               "GroupAdd": [],
               "IpcMode": "shareable",
               "Cgroup": "",
               "Cgroups": "default",

Steps to reproduce the issue

Steps to reproduce the issue

1. run like podman run -it --rm --ipc host localhost/registry:2 sh

Describe the results you received

podman  inspect gallant_mahavira | grep -i ipc -C 2
                    "-it",
                    "--rm",
                    "--ipc",
                    "host",
                    "localhost/registry:2",
--
               "ExtraHosts": [],
               "GroupAdd": [],
               "IpcMode": "shareable",
               "Cgroup": "",
               "Cgroups": "default",

It use shareable rather than host

Describe the results you expected

podman  inspect gallant_mahavira | grep -i ipc -C 2
                    "-it",
                    "--rm",
                    "--ipc",
                    "host",
                    "localhost/registry:2",
--
               "ExtraHosts": [],
               "GroupAdd": [],
               "IpcMode": "host",
               "Cgroup": "",
               "Cgroups": "default",

podman info output

If you are unable to run podman info for any reason, please provide the podman version, operating system and its version and the architecture you are running.


podman info
host:
  arch: amd64
  buildahVersion: 1.27.0
  cgroupControllers:
  - cpuset
  - cpu
  - cpuacct
  - blkio
  - memory
  - devices
  - freezer
  - net_cls
  - perf_event
  - net_prio
  - hugetlb
  - pids
  - rdma
  cgroupManager: systemd
  cgroupVersion: v1
  conmon:
    package: conmon-2.1.4-1.module_el8.7.0+1216+b022c01d.x86_64
    path: /usr/bin/conmon
    version: 'conmon version 2.1.4, commit: ec95327311bd1f0a118cadc9b24032df370babe4'
  cpuUtilization:
    idlePercent: 98.75
    systemPercent: 0.38
    userPercent: 0.87
  cpus: 4
  distribution:
    distribution: '"centos"'
    version: "8"
  eventLogger: file
  hostname: stream8
  idMappings:
    gidmap: null
    uidmap: null
  kernel: 4.18.0-358.el8.x86_64
  linkmode: dynamic
  logDriver: k8s-file
  memFree: 72482816
  memTotal: 2067890176
  networkBackend: cni
  ociRuntime:
    name: runc
    package: runc-1.1.4-1.module_el8.7.0+1216+b022c01d.x86_64
    path: /usr/bin/runc
    version: |-
      runc version 1.1.4
      spec: 1.0.2-dev
      go: go1.18.4
      libseccomp: 2.5.2
  os: linux
  remoteSocket:
    exists: true
    path: /run/podman/podman.sock
  security:
    apparmorEnabled: false
    capabilities: CAP_NET_RAW,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: false
    seccompEnabled: true
    seccompProfilePath: /usr/share/containers/seccomp.json
    selinuxEnabled: false
  serviceIsRemote: false
  slirp4netns:
    executable: /usr/bin/slirp4netns
    package: slirp4netns-1.2.0-2.module_el8.7.0+1216+b022c01d.x86_64
    version: |-
      slirp4netns version 1.2.0
      commit: 656041d45cfca7a4176f6b7eed9e4fe6c11e8383
      libslirp: 4.4.0
      SLIRP_CONFIG_VERSION_MAX: 3
      libseccomp: 2.5.2
  swapFree: 0
  swapTotal: 0
  uptime: 12h 40m 7.00s (Approximately 0.50 days)
plugins:
  authorization: null
  log:
  - k8s-file
  - none
  - passthrough
  - journald
  network:
  - bridge
  - macvlan
  - ipvlan
  volume:
  - local
registries:
  10.3.0.82:4000:
    Blocked: false
    Insecure: true
    Location: 10.3.0.82:4000
    MirrorByDigestOnly: false
    Mirrors: null
    Prefix: 10.3.0.82:4000
    PullFromMirror: ""
  search:
  - registry.access.redhat.com
  - registry.redhat.io
  - docker.io
  - localhost:4000
store:
  configFile: /etc/containers/storage.conf
  containerStore:
    number: 18
    paused: 0
    running: 17
    stopped: 1
  graphDriverName: overlay
  graphOptions:
    overlay.mountopt: nodev,metacopy=on
  graphRoot: /var/lib/containers/storage
  graphRootAllocated: 42938118144
  graphRootUsed: 17803042816
  graphStatus:
    Backing Filesystem: xfs
    Native Overlay Diff: "false"
    Supports d_type: "true"
    Using metacopy: "true"
  imageCopyTmpDir: /var/tmp
  imageStore:
    number: 11
  runRoot: /run/containers/storage
  volumePath: /var/lib/containers/storage/volumes
version:
  APIVersion: 4.2.0
  Built: 1663766104
  BuiltTime: Wed Sep 21 13:15:04 2022
  GitCommit: ""
  GoVersion: go1.18.4
  Os: linux
  OsArch: linux/amd64
  Version: 4.2.0

### Podman in a container

No

### Privileged Or Rootless

None

### Upstream Latest Release

No

### Additional environment details

Additional environment details

### Additional information

Additional information like issue happens only occasionally or issue happens with a particular architecture or on a particular setting

[Luap99]

Seems to only effect the inspect output, the container is actual in the same ipc namespace as the host.

$ readlink /proc/self/ns/ipc 
ipc:[4026531839]
$ podman run alpine:latest readlink /proc/self/ns/ipc 
ipc:[4026534923]
$ podman run --ipc=host  alpine:latest readlink /proc/self/ns/ipc 
ipc:[4026531839]