kali linux update error Segmentation fault Reading package lists... Done

root@kali:~# apt-get update
Segmentation fault
Reading package lists... Done
root@kali:~#

root@kali:~# vi /etc/apt/sources.list
(or)
root@kali:~# leafpad /etc/apt/sources.list

#Add and save

# Regular repositories
deb http://http.kali.org/kali sana main non-free contrib
deb http://security.kali.org/kali-security sana/updates main contrib non-free
# Source repositories
deb-src http://http.kali.org/kali sana main non-free contrib
deb-src http://security.kali.org/kali-security sana/updates main contrib non-free

root@kali:~# apt-get update