the vreaper is deduced from the parent of the
process, which in case of the init process will
return init itself, which causes a BUG_ON() to
trigger in choose_new_parent()


reverting the following patches:

 delta-vreaper-feat01.diff   
 delta-vreaper-fix01.diff
 
and applying this one instead:

 delta-vreaper-feat02.diff

fixes the issue.