Otherwise resulting address from vm_map_find() migh not satisfy the upper limit. For instance, it could affect MAP_32BIT flag from 64bit processes. Found by: Doug Moore <dougm@rice.edu> Reviewed by: alc, Doug Moore <dougm@rice.edu> Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D19688