index out of range when unmask=[]

[xtexChooser]

Issue Description

podman/pkg/specgen/generate/oci_linux.go

Line 60 in 6856c77

if unmask != nil && unmask[0] == "ALL" {

Steps to reproduce the issue

call api to create a container with unmask=[]

Describe the results you received

error 500 Internal Server Error - runtime error: index out of range [0] with length 0: runtime error: index out of range [0] with length 0

Describe the results you expected

no error

podman info output

host:
  arch: amd64
  buildahVersion: 1.30.0
  cgroupControllers:
  - cpu
  - memory
  - pids
  cgroupManager: systemd
  cgroupVersion: v2
  conmon:
    package: conmon-2.1.7-1.3.x86_64
    path: /usr/bin/conmon
    version: 'conmon version 2.1.7, commit: unknown'
  cpuUtilization:
    idlePercent: 87.31
    systemPercent: 2.64
    userPercent: 10.04
  cpus: 6
  databaseBackend: boltdb
  distribution:
    distribution: '"opensuse-tumbleweed"'
    version: "20230608"
  eventLogger: journald
  hostname: xtex
  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: 6.3.6-1-default
  linkmode: dynamic
  logDriver: journald
  memFree: 1380040704
  memTotal: 25118982144
  networkBackend: netavark
  ociRuntime:
    name: runc
    package: runc-1.1.7-1.2.x86_64
    path: /usr/bin/runc
    version: |-
      runc version 1.1.7
      commit: v1.1.7-0-g860f061b76bb
      spec: 1.0.2-dev
      go: go1.20.4
      libseccomp: 2.5.4
  os: linux
  remoteSocket:
    exists: true
    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
    seccompProfilePath: /etc/containers/seccomp.json
    selinuxEnabled: false
  serviceIsRemote: false
  slirp4netns:
    executable: /usr/bin/slirp4netns
    package: slirp4netns-1.2.0-1.2.x86_64
    version: |-
      slirp4netns version 1.2.0
      commit: unknown
      libslirp: 4.7.0
      SLIRP_CONFIG_VERSION_MAX: 5
      libseccomp: 2.5.4
  swapFree: 17179865088
  swapTotal: 17179865088
  uptime: 3h 29m 37.00s (Approximately 0.12 days)
plugins:
  authorization: null
  log:
  - k8s-file
  - none
  - passthrough
  - journald
  network:
  - bridge
  - macvlan
  - ipvlan
  volume:
  - local
registries:
  search:
  - registry.opensuse.org
  - registry.suse.com
  - docker.io
store:
  configFile: /home/xtex/.config/containers/storage.conf
  containerStore:
    number: 2
    paused: 0
    running: 0
    stopped: 2
  graphDriverName: btrfs
  graphOptions: {}
  graphRoot: /home/xtex/.local/share/containers/storage
  graphRootAllocated: 429496729600
  graphRootUsed: 175419408384
  graphStatus:
    Build Version: Btrfs v6.3
    Library Version: "102"
  imageCopyTmpDir: /var/tmp
  imageStore:
    number: 2
  runRoot: /run/user/1000/containers
  transientStore: false
  volumePath: /home/xtex/.local/share/containers/storage/volumes
version:
  APIVersion: 4.5.1
  Built: 1685318400
  BuiltTime: Mon May 29 08:00:00 2023
  GitCommit: ""
  GoVersion: go1.20.4
  Os: linux
  OsArch: linux/amd64
  Version: 4.5.1

Podman in a container

No

Privileged Or Rootless

Rootless

Upstream Latest Release

Yes

Additional environment details

No response

Additional information

No response