reproduce (this is a W=1 build): git clone https://github.com/intel/lkp-tests.git ~/lkp-tests git remote add net-next https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git git fetch net-next main git checkout net-next/main b4 shazam https://lore.kernel.org/r/20250318205735.122590-4-prabhakar.mahadev-lad.rj@bp.renesas.com # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-8.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=m68k olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-8.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash drivers/net/ethernet/stmicro/stmmac/