Description of problem:
fedorainstaller immediatly crashed

Version-Release number of selected component:
anaconda-core-28.22-1.fc28.x86_64

The following was filed automatically by anaconda:
anaconda 28.22 exception report
Traceback (most recent call first):
  File "/usr/lib64/python3.6/site-packages/pyanaconda/storage/osinstall.py", line 1718, in _mark_protected_device
    if device.name in self.protected_dev_names:
  File "/usr/lib/python3.6/site-packages/blivet/threads.py", line 53, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib64/python3.6/site-packages/pyanaconda/storage/osinstall.py", line 1680, in reset
    self._mark_protected_device(dev)
  File "/usr/lib/python3.6/site-packages/blivet/threads.py", line 53, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib64/python3.6/site-packages/pyanaconda/storage/osinstall.py", line 2176, in storage_initialize
    storage.reset()
  File "/usr/lib64/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib64/python3.6/site-packages/pyanaconda/threading.py", line 291, in run
    threading.Thread.run(self)
AttributeError: 'NoneType' object has no attribute 'name'

Additional info:
addons:         com_redhat_kdump
cmdline:        /usr/bin/python3  /sbin/anaconda --liveinst --method=livecd:///dev/mapper/live-base
cmdline_file:   BOOT_IMAGE=vmlinuz initrd=initrd.img root=live:CDLABEL=Fedora-WS-Live-Rawhide-20180220- rd.live.image rd.live.check quiet
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         4.16.0-0.rc2.git0.1.fc28.x86_64
other involved packages: python3-blivet-3.0.0-0.2.b1.fc28.noarch, python3-libs-3.6.4-14.fc28.x86_64
product:        Fedora
release:        Fedora release 28 (Rawhide)
type:           anaconda
version:        rawhide