growisofs: unable to anonymously mmap 33554432: Resource temporarily unavailable

[Roberto Malinverni]

The issue is reported even for dvd+rw-tools > 6.0
I've found this:

http://www.destr0yr.com/article.php/unable-to-anonymously-mmap/print

And the following suggestion on another site:
"Go to K3B's config, Programs tab, User Parameters. Add the following
parameter for growisofs:
-use-the-force-luke=bufsize:16m"

Hope this helps.