Fool with kernel configuration enabling all those oh so sweet bleeding edge modules that will crash everything. I plan to re-add CONFIG_DRM_MGA=m to the configuration. Because .config will be overwritten before the actual build you must copy .config to the rpm top directory replacing the original configuration for your architecture.

cd BUILD/kernel-XXX/linux-XXX/
make menuconfig
cp .config ~/rpmbuild/kernel/kernel-XXX-ARCH.config
cd ~/rpmbuild/kernel/