tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 73748627df83aab934c81332ca83a44ab8c7b3e3 commit: 0652035a57945e14e611dafae2ec5b46a05bc1d1 [1073/14055] asm-generic: unaligned: remove byteshift helpers config: mips-randconfig-r003-20210628 (attached as .config) compiler: mipsel-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=0652035a57945e14e611dafae2ec5b46a05bc1d1 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 0652035a57945e14e611dafae2ec5b46a05bc1d1 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross O=build_dir ARCH=mips SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): mipsel-linux-ld: arch/mips/boot/compressed/decompress.o: in function `lzo1x_decompress_safe': decompress.c:(.text.lzo1x_decompress_safe+0x5c): undefined reference to `ftrace_likely_update' mipsel-linux-ld: decompress.c:(.text.lzo1x_decompress_safe+0x7c): undefined reference to `ftrace_likely_update' mipsel-linux-ld: decompress.c:(.text.lzo1x_decompress_safe+0xa8): undefined reference to `ftrace_likely_update' mipsel-linux-ld: decompress.c:(.text.lzo1x_decompress_safe+0x118): undefined reference to `ftrace_likely_update' mipsel-linux-ld: decompress.c:(.text.lzo1x_decompress_safe+0x164): undefined reference to `ftrace_likely_update' mipsel-linux-ld: arch/mips/boot/compressed/decompress.o:decompress.c:(.text.lzo1x_decompress_safe+0x1b0): more undefined references to `ftrace_likely_update' follow mipsel-linux-ld: arch/mips/boot/compressed/decompress.o: in function `decompress_kernel': decompress.c:(.text.decompress_kernel+0xd4): undefined reference to `__bswapsi2' >> mipsel-linux-ld: decompress.c:(.text.decompress_kernel+0x160): undefined reference to `__bswapsi2' mipsel-linux-ld: decompress.c:(.text.decompress_kernel+0x1a4): undefined reference to `__bswapsi2' >> mipsel-linux-ld: decompress.c:(.text.decompress_kernel+0x1e8): undefined reference to `ftrace_likely_update' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org