Virtual Box Guest Additions fail to build kernel 3.5

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http://forums.fedoraforum.org – Host: Mac OS X 10.7.4 Guest: Fedora 17 Vbox 4.1.12 through 4.2.0 beta. Normally when I mount the Guest Additions image, the install script runs automatically, I authenticate, and it builds fine, I reboot, no problems. Since kernel 3.5.0-2, I get a failure building the main Guest Additions module. /var/log/vboxadd-install.log The only clues in the log (attached): Code: /tmp/vbox.0/r0drv/linux/memobj-r0drv-linux.c: In function ‘rtR0MemObjLinuxDoMmap’: /tmp/vbox.0/r0drv/linux/memobj-r0drv-linux.c:1150:9: error: implicit declaration of function ‘do_mmap’ [-Werror=implicit-f (HowTos)