Hi Thomas, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/mips/linux.git mips-next head: 9bd0bd264578fe191bf5d2ff23f9887b91862536 commit: 26bff9eb49201aeb4e1b32d698c191831a39f5d4 [75/143] MIPS: Only include the platform file needed config: mips-randconfig-r034-20200531 (attached as .config) compiler: mips64el-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 26bff9eb49201aeb4e1b32d698c191831a39f5d4 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): scripts/genksyms/parse.y: warning: 9 shift/reduce conflicts [-Wconflicts-sr] scripts/genksyms/parse.y: warning: 5 reduce/reduce conflicts [-Wconflicts-rr] make[2]: *** [scripts/Makefile.build:100: scripts/mod/devicetable-offsets.s] Error 1 make[2]: *** [scripts/Makefile.build:267: scripts/mod/empty.o] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1140: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:180: sub-make] Error 2 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org