https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63879
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Sasha Levin from comment #2) > $ gcc -Wp,-MD,fs/ext3/.namei.o.d -nostdinc -isystem > /home/sasha/gcc-inst/lib/gcc/x86_64-unknown-linux-gnu/5.0.0/include > -I./arch/x86/include -Iarch/x86/include/generated -Iinclude > -I./arch/x86/include/uapi -Iarch/x86/include/generated/uapi -I./include/uapi > -Iinclude/generated/uapi -include ./include/linux/kconfig.h -D__KERNEL__ > -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing > -fno-common -Werror-implicit-function-declaration -Wno-format-security > -std=gnu89 -m64 -mno-80387 -mno-fp-ret-in-387 -march=native -mno-red-zone ^^^^^^^^^^^^^ Please show the output of "gcc -v" when -march=native is used. No one can guess what your CPU is.