[apparmor] file mmap() with no name?

[Mark Wadham]

what does this mean?

[231011.527784] audit: type=1400 audit(1469536509.129:16792): 
apparmor="ALLOWED" operation="file_mmap" info="Failed name lookup - 
disconnected path" error=-13 profile="/usr/sbin/apache2" name="" pid=758 
comm="apache2" requested_mask="wr" denied_mask="wr" fsuid=0 ouid=0


I'm confused because name=""