tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-unstable head: 39aca4f17e02ee4076b6ab327577c9b1be23775d commit: d9cab54f77377439e766e1c5916f79ec2ee27a6c [288/290] mm: vmalloc: convert vread() to vread_iter() config: i386-randconfig-a001 (https://download.01.org/0day-ci/archive/20230323/202303230226.NucKb3B7-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/commit/?id=d9cab54f77377439e766e1c5916f79ec2ee27a6c git remote add akpm-mm https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git git fetch --no-tags akpm-mm mm-unstable git checkout d9cab54f77377439e766e1c5916f79ec2ee27a6c # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=i386 olddefconfig make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202303230226.NucKb3B7-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> mm/vmalloc.c:3448:8: warning: no previous prototype for 'zero_iter' [-Wmissing-prototypes] 3448 | size_t zero_iter(struct iov_iter *iter, size_t count) | ^~~~~~~~~ vim +/zero_iter +3448 mm/vmalloc.c 3442 3443 /* 3444 * Atomically zero bytes in the iterator. 3445 * 3446 * Returns the number of zeroed bytes. 3447 */ > 3448 size_t zero_iter(struct iov_iter *iter, size_t count) 3449 { 3450 size_t remains = count; 3451 3452 while (remains > 0) { 3453 size_t num, copied; 3454 3455 num = remains < PAGE_SIZE ? remains : PAGE_SIZE; 3456 copied = copy_page_to_iter_atomic(ZERO_PAGE(0), 0, num, iter); 3457 remains -= copied; 3458 3459 if (copied < num) 3460 break; 3461 } 3462 3463 return count - remains; 3464 } 3465 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
