Hi Baoquan, kernel test robot noticed the following build errors: [auto build test ERROR on arm64/for-next/core] [also build test ERROR on tip/x86/core powerpc/next powerpc/fixes linus/master v6.7-rc2 next-20231124] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Baoquan-He/kexec_file-add-kexec_file-flag-to-control-debug-printing/20231124-113942 base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core patch link: https://lore.kernel.org/r/20231124033642.520686-5-bhe%40redhat.com patch subject: [PATCH v2 4/7] kexec_file, arm64: print out debugging message if required config: arm64-randconfig-001-20231126 (https://download.01.org/0day-ci/archive/20231126/202311260548.1HaxcDnE-lkp@xxxxxxxxx/config) compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231126/202311260548.1HaxcDnE-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202311260548.1HaxcDnE-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> arch/arm64/kernel/machine_kexec.c:35:2: error: implicit declaration of function 'kexec_dprintk' is invalid in C99 [-Werror,-Wimplicit-function-declaration] kexec_dprintk("%s:%d:\n", func, line); ^ 1 error generated. vim +/kexec_dprintk +35 arch/arm64/kernel/machine_kexec.c 27 28 /** 29 * kexec_image_info - For debugging output. 30 */ 31 #define kexec_image_info(_i) _kexec_image_info(__func__, __LINE__, _i) 32 static void _kexec_image_info(const char *func, int line, 33 const struct kimage *kimage) 34 { > 35 kexec_dprintk("%s:%d:\n", func, line); 36 kexec_dprintk(" kexec kimage info:\n"); 37 kexec_dprintk(" type: %d\n", kimage->type); 38 kexec_dprintk(" head: %lx\n", kimage->head); 39 kexec_dprintk(" kern_reloc: %pa\n", &kimage->arch.kern_reloc); 40 kexec_dprintk(" el2_vectors: %pa\n", &kimage->arch.el2_vectors); 41 } 42 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
