CC: linux-kernel(a)vger.kernel.org TO: Sami Tolvanen <samitolvanen(a)google.com&gt; CC: Masahiro Yamada <masahiroy(a)kernel.org&gt; CC: Alexander Lobakin <alobakin(a)pm.me&gt; Hi Sami, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 8ab774587903771821b59471cc723bba6d893942 commit: 850ded46c64299f04d15e39caaba21963fb966f8 kbuild: Fix TRIM_UNUSED_KSYMS with LTO_CLANG date: 2 months ago config: x86_64-buildonly-randconfig-r001-20211008 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 8ed2e8e04ff42eb4d8009999ae1fd341a30bf6c0) 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 # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 850ded46c64299f04d15e39caaba21963fb966f8 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org