Hi Hans, First bad commit (maybe != root cause): tree: git://linuxtv.org/hverkuil/media_tree.git tegrav5 head: 3ab57682384cccc052812543e535ba545b50d3c0 commit: 2c516ed27b465084be43e9f459e19c80ad729d26 [17/18] tc358840: various fixes config: arm-allmodconfig (attached as .config) compiler: arm-linux-gnueabi-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 2c516ed27b465084be43e9f459e19c80ad729d26 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 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 <<): ERROR: modpost: "__aeabi_uldivmod" [drivers/media/test-drivers/vidtv/dvb-vidtv-bridge.ko] undefined! --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org