reproduce (this is a W=1 build): git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git git fetch tip master git checkout tip/master b4 shazam https://lore.kernel.org/r/20250523042635.work.579-kees@kernel.org # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=i386 olddefconfig make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/crypto/ crypto/