repo :
deb https://http.kali.org/kali kali-rolling main non-free contrib
# deb-src https://http.kali.org/kali kali-rolling main non-free contrib
# deb-src https://http.kali.org/kali kali-rolling main non-free contrib
apt-get update && apt-get dist-upgrade -y
apt-get install virtualbox-guest-x11
reboot
=================
apt-get install build-essential dkms
apt-get install virtualbox