Fault injection capability for usercopy functions

modulename: fault-inject-usercopy.ko

configname: CONFIG_FAULT_INJECTION_USERCOPY

Linux Kernel Configuration
└─>Kernel hacking
└─>Kernel Testing and Coverage
└─>Fault injection capability for usercopy functions
In linux kernel since version 5.1 (release Date: 2019-05-05)  
Provides fault-injection capability to inject failures
in usercopy functions (copy_from_user(), get_user(), ...).

source code:
lib/fault-inject-usercopy.c