On Wed, Feb 1, 2023 at 1:16 AM kernel test robot <lkp@xxxxxxxxx> wrote: > > Hi Alexandre, > > Thank you for the patch! Perhaps something to improve: > > [auto build test WARNING on linus/master] > [also build test WARNING on v6.2-rc6 next-20230131] > [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/Alexandre-Ghiti/riscv-Split-early-and-final-KASAN-population-functions/20230125-163113 > patch link: https://lore.kernel.org/r/20230125082333.1577572-3-alexghiti%40rivosinc.com > patch subject: [PATCH v3 2/6] riscv: Rework kasan population functions > config: riscv-randconfig-r006-20230201 (https://download.01.org/0day-ci/archive/20230201/202302010819.RAsjyv6V-lkp@xxxxxxxxx/config) > compiler: riscv64-linux-gcc (GCC) 12.1.0 > 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://github.com/intel-lab-lkp/linux/commit/c18726e8d14edbd59ec19854b4eb06d83fff716f > git remote add linux-review https://github.com/intel-lab-lkp/linux > git fetch --no-tags linux-review Alexandre-Ghiti/riscv-Split-early-and-final-KASAN-population-functions/20230125-163113 > git checkout c18726e8d14edbd59ec19854b4eb06d83fff716f > # save the config file > mkdir build_dir && cp config build_dir/.config > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv olddefconfig > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash arch/riscv/mm/ > > If you fix the issue, kindly add following tag where applicable > | Reported-by: kernel test robot <lkp@xxxxxxxxx> > > All warnings (new ones prefixed by >>): > > >> arch/riscv/mm/kasan_init.c:442:6: warning: no previous prototype for 'create_tmp_mapping' [-Wmissing-prototypes] > 442 | void create_tmp_mapping(void) > | ^~~~~~~~~~~~~~~~~~ > > > vim +/create_tmp_mapping +442 arch/riscv/mm/kasan_init.c > > 441 > > 442 void create_tmp_mapping(void) > 443 { > 444 void *ptr; > 445 p4d_t *base_p4d; > 446 > 447 /* > 448 * We need to clean the early mapping: this is hard to achieve "in-place", > 449 * so install a temporary mapping like arm64 and x86 do. > 450 */ > 451 memcpy(tmp_pg_dir, swapper_pg_dir, sizeof(pgd_t) * PTRS_PER_PGD); > 452 > 453 /* Copy the last p4d since it is shared with the kernel mapping. */ > 454 if (pgtable_l5_enabled) { > 455 ptr = (p4d_t *)pgd_page_vaddr(*pgd_offset_k(KASAN_SHADOW_END)); > 456 memcpy(tmp_p4d, ptr, sizeof(p4d_t) * PTRS_PER_P4D); > 457 set_pgd(&tmp_pg_dir[pgd_index(KASAN_SHADOW_END)], > 458 pfn_pgd(PFN_DOWN(__pa(tmp_p4d)), PAGE_TABLE)); > 459 base_p4d = tmp_p4d; > 460 } else { > 461 base_p4d = (p4d_t *)tmp_pg_dir; > 462 } > 463 > 464 /* Copy the last pud since it is shared with the kernel mapping. */ > 465 if (pgtable_l4_enabled) { > 466 ptr = (pud_t *)p4d_page_vaddr(*(base_p4d + p4d_index(KASAN_SHADOW_END))); > 467 memcpy(tmp_pud, ptr, sizeof(pud_t) * PTRS_PER_PUD); > 468 set_p4d(&base_p4d[p4d_index(KASAN_SHADOW_END)], > 469 pfn_p4d(PFN_DOWN(__pa(tmp_pud)), PAGE_TABLE)); > 470 } > 471 } > 472 Ok, I have to declare this function static to quiet this warning, there will be a v4 soon then. > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests
