# patched kernel (#1 Sep 15 17:27), as root in guest
$ /tmp/poc/f3_ioctl_lun status 0
issuing IOCATARAIDSTATUS lun=0 (0x0)
status ioctl: Device not configured      # in-bounds behavior unchanged (ENXIO)
$ /tmp/poc/f3_ioctl_lun rebuild 134217728
issuing IOCATARAIDREBUILD lun=134217728 (0x8000000)
rebuild ioctl: Invalid argument           # OOB lun now rejected with EINVAL
$ uptime
5:39PM  up 1 min, 0 users, load averages: 0.12, 0.05, 0.02   # guest healthy