Hi Cédric, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 8b12a62a4e3ed4ae99c715034f557eb391d6b196 commit: bb21e1b6c5352d62d866e9236ed427f632cd537b powerpc/optprobes: Make patch_imm64_load_insns() static date: 7 weeks ago config: powerpc64-randconfig-r003-20210318 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project fcc1ce00931751ac02498986feb37744e9ace8de) 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 powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-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 bb21e1b6c5352d62d866e9236ed427f632cd537b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 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 >>): DEFINE_INSN_CACHE_OPS(ppc_optinsn); ^ include/linux/kprobes.h:306:20: note: expanded from macro 'DEFINE_INSN_CACHE_OPS' static inline bool is_kprobe_##__name##_slot(unsigned long addr) \ ^ <scratch space>:14:1: note: expanded from here is_kprobe_ppc_optinsn_slot ^ 1 error generated. vim +/is_kprobe_ppc_optinsn_slot +34 arch/powerpc/kernel/optprobes.c 51c9c084399352 Anju T 2017-02-08 20 51c9c084399352 Anju T 2017-02-08 21 #define TMPL_CALL_HDLR_IDX \ 51c9c084399352 Anju T 2017-02-08 22 (optprobe_template_call_handler - optprobe_template_entry) 51c9c084399352 Anju T 2017-02-08 23 #define TMPL_EMULATE_IDX \ 51c9c084399352 Anju T 2017-02-08 24 (optprobe_template_call_emulate - optprobe_template_entry) 51c9c084399352 Anju T 2017-02-08 25 #define TMPL_RET_IDX \ 51c9c084399352 Anju T 2017-02-08 26 (optprobe_template_ret - optprobe_template_entry) 51c9c084399352 Anju T 2017-02-08 27 #define TMPL_OP_IDX \ 51c9c084399352 Anju T 2017-02-08 28 (optprobe_template_op_address - optprobe_template_entry) 51c9c084399352 Anju T 2017-02-08 29 #define TMPL_INSN_IDX \ 51c9c084399352 Anju T 2017-02-08 30 (optprobe_template_insn - optprobe_template_entry) 51c9c084399352 Anju T 2017-02-08 31 #define TMPL_END_IDX \ 51c9c084399352 Anju T 2017-02-08 32 (optprobe_template_end - optprobe_template_entry) 51c9c084399352 Anju T 2017-02-08 33 51c9c084399352 Anju T 2017-02-08 @34 DEFINE_INSN_CACHE_OPS(ppc_optinsn); 51c9c084399352 Anju T 2017-02-08 35 :::::: The code at line 34 was first introduced by commit :::::: 51c9c0843993528bffc920c54c2121d9e6f8b090 powerpc/kprobes: Implement Optprobes :::::: TO: Anju T <anju(a)linux.vnet.ibm.com&gt; :::::: CC: Michael Ellerman <mpe(a)ellerman.id.au&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org