tree: https://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git work.iov_iter_get_pages head: a2a7ea71b10083f1b6250f653c448f863d9212c6 commit: d8115c2f911696d202ba377c54421dc7c055de56 [33/34] pipe_get_pages(): switch to append_pipe() config: um-x86_64_defconfig (https://download.01.org/0day-ci/archive/20220622/202206220821.geOiztBp-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-3) 11.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git/commit/?id=d8115c2f911696d202ba377c54421dc7c055de56 git remote add viro-vfs https://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git git fetch --no-tags viro-vfs work.iov_iter_get_pages git checkout d8115c2f911696d202ba377c54421dc7c055de56 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=um SUBARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): lib/iov_iter.c: In function 'pipe_get_pages': >> lib/iov_iter.c:1225:58: error: passing argument 3 of 'append_pipe' from incompatible pointer type [-Werror=incompatible-pointer-types] 1225 | struct page *page = append_pipe(i, left, &off); | ^~~~ | | | unsigned int * lib/iov_iter.c:270:74: note: expected 'size_t *' {aka 'long unsigned int *'} but argument is of type 'unsigned int *' 270 | static struct page *append_pipe(struct iov_iter *i, size_t size, size_t *off) | ~~~~~~~~^~~ cc1: some warnings being treated as errors vim +/append_pipe +1225 lib/iov_iter.c 1205 1206 static ssize_t pipe_get_pages(struct iov_iter *i, 1207 struct page ***pages, size_t maxsize, unsigned maxpages, 1208 size_t *start) 1209 { 1210 unsigned int npages, off, count; 1211 struct page **p; 1212 ssize_t left; 1213 1214 if (!sanity(i)) 1215 return -EFAULT; 1216 1217 *start = off = pipe_npages(i, &npages); 1218 if (!npages) 1219 return -EFAULT; 1220 count = want_pages_array(pages, maxsize, off, min(npages, maxpages)); 1221 if (!count) 1222 return -ENOMEM; 1223 p = *pages; 1224 for (npages = 0, left = maxsize ; npages < count; npages++) { > 1225 struct page *page = append_pipe(i, left, &off); 1226 if (!page) 1227 break; 1228 get_page(*p++ = page); 1229 if (left <= PAGE_SIZE - off) 1230 return maxsize; 1231 left -= PAGE_SIZE - off; 1232 } 1233 if (!npages) 1234 return -EFAULT; 1235 return maxsize - left; 1236 } 1237 -- 0-DAY CI Kernel Test Service https://01.org/lkp
