tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git modules/WIP head: d88189bbcb34495cba45b775e321eab6f770c6f3 commit: ef2573d9a6bc94c49ab2fe3bcb2ddba37fcbbddc [23/24] ftrace: Merge ftrace_module_{init,enable}() config: powerpc-rhel-kconfig (attached as .config) compiler: powerpc64le-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 git checkout ef2573d9a6bc94c49ab2fe3bcb2ddba37fcbbddc # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): powerpc64le-linux-ld: kernel/module.o: in function `__se_sys_delete_module': powerpc64le-linux-ld: kernel/module.o: in function `do_init_module': module.c:(.text+0x6ca0): undefined reference to `ftrace_module_release' powerpc64le-linux-ld: kernel/module.o: in function `load_module': module.c:(.text+0x9d44): undefined reference to `ftrace_module_release' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org