reproduce (this is a W=1 build):
        git checkout e05021a829b834fecbd42b173e55382416571b2c
        b4 shazam https://lore.kernel.org/r/20251125-dev-mctp-test-tx-queue-v1-1-3a1daa4e99e1@codeconstruct.com.au

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash net/mctp/