Linux Kernel Selftests

Kernel Setup

Keep the previously built kernel config file

Get into kernel source directory:

cp previous_config .config
make olddefconfig
make kselftest-merge
make menuconfig # setup if and as you want
make -j 2
make modules modules_install install

Do necessary things for booting the new kernel. Reboot with new kernel.

Net selftests

Debian instructions for setup: Install necessary softwares for kselftest:

sudo apt-get install libnuma-dev traceroute net-tools

Get into previously built kernel source directory and run:

make summary=1 TARGETS=net kselftest |& tee /tmp/kselftest_summary_net.log
make TARGETS=net kselftest |& tee /tmp/kselftest_net.log

You may see the above log files for later need.

The kselftest target builds "nettest" executable binary. Copy it to PATH or make a symlink.

cp tools/testing/selftests/net/nettest /usr/local/bin

Rerun the selftest to pass some failing tests because of previously non-existant nettest binary.