[kbuild-all] [linux-next:master 8712/10489] arch/riscv/mm/init.c:707:13: warning: no previous prototype for function 'protect_kernel_linear_mapping_text_rodata'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: c7d4c1fd91ab4a6d2620497921a9c6bf54650ab8 commit: 6b456a82fa767f62c1329378c6795410fa9b46e6 [8712/10489] Merge branch 'riscv-wx-mappings' into for-next config: riscv-randconfig-r026-20210615 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 64720f57bea6a6bf033feef4a5751ab9c0c3b401) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 6b456a82fa767f62c1329378c6795410fa9b46e6 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 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 >>): void __init protect_kernel_linear_mapping_text_rodata(void) ^ arch/riscv/mm/init.c:707:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void __init protect_kernel_linear_mapping_text_rodata(void) ^ static 1 warning generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for LOCKDEP Depends on DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT && (FRAME_POINTER || MIPS || PPC || S390 || MICROBLAZE || ARM || ARC || X86) Selected by - LOCK_STAT && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT - DEBUG_LOCK_ALLOC && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT vim +/protect_kernel_linear_mapping_text_rodata +707 arch/riscv/mm/init.c 671f9a3e2e24cd Anup Patel 2019-06-28 705 8d91b097335892 Geert Uytterhoeven 2021-04-29 706 #if defined(CONFIG_64BIT) && defined(CONFIG_STRICT_KERNEL_RWX) 010623568222bd Jisheng Zhang 2021-05-16 @707 void __init protect_kernel_linear_mapping_text_rodata(void) 2bfc6cd81bd17e Alexandre Ghiti 2021-04-11 708 { 2bfc6cd81bd17e Alexandre Ghiti 2021-04-11 709 unsigned long text_start = (unsigned long)lm_alias(_start); 2bfc6cd81bd17e Alexandre Ghiti 2021-04-11 710 unsigned long init_text_start = (unsigned long)lm_alias(__init_text_begin); 2bfc6cd81bd17e Alexandre Ghiti 2021-04-11 711 unsigned long rodata_start = (unsigned long)lm_alias(__start_rodata); 2bfc6cd81bd17e Alexandre Ghiti 2021-04-11 712 unsigned long data_start = (unsigned long)lm_alias(_data); 2bfc6cd81bd17e Alexandre Ghiti 2021-04-11 713 2bfc6cd81bd17e Alexandre Ghiti 2021-04-11 714 set_memory_ro(text_start, (init_text_start - text_start) >> PAGE_SHIFT); 2bfc6cd81bd17e Alexandre Ghiti 2021-04-11 715 set_memory_nx(text_start, (init_text_start - text_start) >> PAGE_SHIFT); 2bfc6cd81bd17e Alexandre Ghiti 2021-04-11 716 2bfc6cd81bd17e Alexandre Ghiti 2021-04-11 717 set_memory_ro(rodata_start, (data_start - rodata_start) >> PAGE_SHIFT); 2bfc6cd81bd17e Alexandre Ghiti 2021-04-11 718 set_memory_nx(rodata_start, (data_start - rodata_start) >> PAGE_SHIFT); 2bfc6cd81bd17e Alexandre Ghiti 2021-04-11 719 } 2bfc6cd81bd17e Alexandre Ghiti 2021-04-11 720 #endif 2bfc6cd81bd17e Alexandre Ghiti 2021-04-11 721 :::::: The code at line 707 was first introduced by commit :::::: 010623568222bd144eb73aa9f3b46c79b63d7676 riscv: mm: init: Consolidate vars, functions :::::: TO: Jisheng Zhang <jszhang(a)kernel.org&gt; :::::: CC: Palmer Dabbelt <palmerdabbelt(a)google.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org