Hi Chris, I love your patch! Yet something to improve: [auto build test ERROR on jeyu/modules-next] [also build test ERROR on linux/master soc/for-next openrisc/for-next powerpc/next uml/linux-next tip/x86/core asm-generic/master linus/master v5.12-rc2] [cannot apply to pmladek/for-next next-20210310] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Chris-Down/printk-Userspace-format-enumeration-support/20210310-103231 base: https://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux.git modules-next config: mips-randconfig-r022-20210309 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project cd9a69289c7825d54450cb6829fef2c8e0f1963a) 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 # install mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://github.com/0day-ci/linux/commit/097254e932767fc7d5ba0243a83265017d427d74 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Chris-Down/printk-Userspace-format-enumeration-support/20210310-103231 git checkout 097254e932767fc7d5ba0243a83265017d427d74 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: printk >>> referenced by kernel/genex.o:(handle_mcheck) in archive arch/mips/built-in.a >>> referenced by kernel/genex.o:(handle_reserved) in archive arch/mips/built-in.a >>> did you mean: _printk >>> defined in: kernel/built-in.a(printk/printk.o) --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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