Hi Vladimir, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 13311e74253fe64329390df80bed3f07314ddd61 commit: d60bc62de4ae068ed4b215c24cdfdd5035aa986e net: dsa: seville: build as separate module date: 9 months ago config: x86_64-randconfig-r026-20210621 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project e1adf90826a57b674eee79b071fb46c1f5683cd0) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # 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 d60bc62de4ae068ed4b215c24cdfdd5035aa986e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 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 >>): static const struct of_device_id seville_of_match[] = { ^ 1 warning generated. vim +/seville_of_match +1107 drivers/net/dsa/ocelot/seville_vsc9953.c 84705fc165526e Maxim Kochetkov 2020-07-13 1106 84705fc165526e Maxim Kochetkov 2020-07-13 @1107 static const struct of_device_id seville_of_match[] = { 84705fc165526e Maxim Kochetkov 2020-07-13 1108 { .compatible = "mscc,vsc9953-switch" }, 84705fc165526e Maxim Kochetkov 2020-07-13 1109 { }, 84705fc165526e Maxim Kochetkov 2020-07-13 1110 }; 84705fc165526e Maxim Kochetkov 2020-07-13 1111 MODULE_DEVICE_TABLE(of, seville_of_match); 84705fc165526e Maxim Kochetkov 2020-07-13 1112 :::::: The code at line 1107 was first introduced by commit :::::: 84705fc165526e8e55d208b2b10a48cc720a106a net: dsa: felix: introduce support for Seville VSC9953 switch :::::: TO: Maxim Kochetkov <fido_max(a)inbox.ru&gt; :::::: CC: David S. Miller <davem(a)davemloft.net&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org