reproduce (this is a W=1 build): git checkout 09a0fa92e5b45e99cf435b2fbf5ebcf889cf8780 b4 shazam https://lore.kernel.org/r/20250108114536.627715-3-vdonnefort@google.com # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 olddefconfig make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash kernel/trace/