kvm: module verification failed: signature and/or required key missing - tainting kernel

Question

I\'m using Ubuntu 14.04 LTS and kernel version 3.13.11.4.
I\'m trying to load patched KVM modules kvm and kvm-intel

Answer 1

In general, if you are building a custom kernel and using make oldconfig. This copies the exiting config-* file from /boot. Now a days most of the kernel modules required to be signed by the linux vendor. So edit the .config and disable CONFIG_MODULE_SIG_ALL and CONFIG_MODULE_SIG, before compiling the kernel.

CONFIG_MODULE_SIG=n
CONFIG_MODULE_SIG_ALL=n
# CONFIG_MODULE_SIG_FORCE is not set 
# CONFIG_MODULE_SIG_SHA1 is not set
# CONFIG_MODULE_SIG_SHA224 is not set
# CONFIG_MODULE_SIG_SHA256 is not set
# CONFIG_MODULE_SIG_SHA384 is not set