Hi Jessica, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next head: da64dbe8eceeaeff55f7b95865645254ec4beba7 commit: 813afbf546546a17fd0511760cac5faf88cc4497 [19/20] modpost: rework and consolidate logging interface config: mips-randconfig-a001-20200317 (attached as .config) compiler: mips-linux-gcc (GCC) 9.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 813afbf546546a17fd0511760cac5faf88cc4497 # save the attached .config to linux build tree GCC_VERSION=9.2.0 make.cross ARCH=mips If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org