These testcases test the Smack Security Module. And they are not part of default LTP build/install/run. A kernel with Smack configured is required to run the Smack testsuite. (Please see ltp/README for all those config options) The smackfs filesystem must be mounted at /smack. One way to accomplish this is to: 1) Create a directory first: mkdir -p /smack 2) Include this line in the /etc/fstab file: smackfs /smack smackfs defaults 0 0 3) Do: mount -a 4) Building/Installing the tests: Each test is designed to be independent. The tests can be built using the default make target. (cd testcases/kernel/security/smack; make && make install) 5) Running the tests: ./runltp -f smack Each test exits with 0 on success and an error code on failure.