kernel-3.8.1 vboxdrv.ko: Required key not available (CentOS 6.3 x86_64 VirtualBox无法启动)

[root@StuOS linux-3.8.1]# uname -a
Linux StuOS 3.8.1 #6 SMP PREEMPT Sat Mar 2 20:48:01 CST 2013 x86_64 x86_64 x86_64 GNU/Linux
[root@StuOS linux-3.8.1]# gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8.0/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../configure --prefix=/usr --libexecdir=/usr/lib --with-gmp=/usr/local/gmp-5.0.5 --with-mpfr=/usr/local/mpfr-2.4.2 --with-mpc=/usr/local/mpc-0.8.1 --with-ppl=/usr/local/ppl-0.11 --with-cloog=/usr/local/cloog-0.16.2 --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --enable-languages=c,c++,fortran,go,java,lto,objc,obj-c++ --enable-multilib --disable-bootstrap --with-system-zlib --build=x86_64-linux-gnu --enable-lto --with-cpu=athlon64 --enable-cloog-backend=isl --enable-objc-gc --disable-werror --enable-interwork --with-gnu-ld
Thread model: posix
gcc version 4.8.0 20121004 (experimental) (GCC) 

[ghui@StuOS ~]$ sudo /etc/init.d/vboxdrv setup
[sudo] password for ghui: 
Stopping VirtualBox kernel modules                         [  OK  ]
Removing old VirtualBox pci kernel module                  [  OK  ]
Removing old VirtualBox netadp kernel module               [  OK  ]
Removing old VirtualBox netflt kernel module               [  OK  ]
Removing old VirtualBox kernel module                      [  OK  ]
Recompiling VirtualBox kernel modules                      [  OK  ]
Starting VirtualBox kernel modules                         [FAILED]
  (modprobe vboxdrv failed. Please use 'dmesg' to find out why)
[ghui@StuOS ~]$ su
Password: 
[root@StuOS Ghui]# modprobe vboxdrv
FATAL: Error inserting vboxdrv (/lib/modules/3.8.1/misc/vboxdrv.ko): Required key not available

 原因是内核启用了 Module signature verification ：

在编译内核是不要启用Module signature verification CONFIG_MODULE_SIG）即可