How to Fix Missing linux/module.h in LTP Configuration

Issue

The LTP configuration fails with:

fatal error: linux/module.h: No such file or directory

This header is critical for kernel module development. Without it, LTP’s kernel-related tests will fail.

Check if kernel headers are installed:

rpm -qa | grep kernel-devel

If missing, install them:

sudo yum install kernel-devel-$(uname -r)

Ensure the running kernel matches installed headers:

uname -r # Running kernel
ls /usr/src/kernels/ # Installed headers

If versions differ, install the correct one:

sudo yum install kernel-devel-$(uname -r)

Create a symlink to standard path:

sudo ln -s /usr/src/kernels/$(uname -r) /usr/src/linux

Verify:

ls -l /usr/src/linux/include/linux/module.h

Re-run configure with explicit path:

./configure --with-linux-dir=/usr/src/kernels/$(uname -r)

Verify dependent headers exist:

ls /usr/src/kernels/$(uname -r)/include/linux/list.h

If missing, reinstall headers:

sudo yum reinstall kernel-devel-$(uname -r)

Check if compiler can find the header:

echo "#include <linux/module.h>" | gcc -E - > /dev/null

After fixing paths:

./configure --with-linux-dir=/usr/src/kernels/$(uname -r)
make && sudo make install

List installed headers:

rpm -ql kernel-devel-$(uname -r) | grep module.h

Check GCC search paths:

gcc -E -Wp,-v - </dev/null 2>&1 | grep /usr/src/kernels