BCC: [email protected] CC: [email protected] In-Reply-To: <[email protected]> References: <[email protected]> TO: David Howells <[email protected]>
Hi David, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on linus/master] [also build test WARNING on v6.0-rc4 next-20220909] [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/David-Howells/iov_iter-Add-extraction-functions/20220910-072102 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git ce888220d5c7a805e0e155302a318d5d23e62950 :::::: branch date: 33 hours ago :::::: commit date: 33 hours ago config: x86_64-randconfig-m001 (https://download.01.org/0day-ci/archive/20220911/[email protected]/config) compiler: gcc-11 (Debian 11.3.0-5) 11.3.0 If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <[email protected]> Reported-by: Dan Carpenter <[email protected]> smatch warnings: lib/iov_iter_extract.c:360 iov_iter_extract_xarray() error: uninitialized symbol 'ret'. vim +/ret +360 lib/iov_iter_extract.c a8df8a89788037 David Howells 2022-09-10 314 a8df8a89788037 David Howells 2022-09-10 315 /* a8df8a89788037 David Howells 2022-09-10 316 * Extract the pages from an XARRAY-class iterator and add them to the a8df8a89788037 David Howells 2022-09-10 317 * destination buffer. The pages are not pinned. a8df8a89788037 David Howells 2022-09-10 318 */ a8df8a89788037 David Howells 2022-09-10 319 static ssize_t iov_iter_extract_xarray(struct iov_iter *iter, a8df8a89788037 David Howells 2022-09-10 320 void *array, unsigned int array_max, a8df8a89788037 David Howells 2022-09-10 321 ssize_t maxsize, a8df8a89788037 David Howells 2022-09-10 322 enum iter_extract_dest dest) a8df8a89788037 David Howells 2022-09-10 323 { a8df8a89788037 David Howells 2022-09-10 324 struct xarray *xa = iter->xarray; a8df8a89788037 David Howells 2022-09-10 325 struct folio *folio; a8df8a89788037 David Howells 2022-09-10 326 unsigned int ix; a8df8a89788037 David Howells 2022-09-10 327 loff_t start = iter->xarray_start + iter->iov_offset; a8df8a89788037 David Howells 2022-09-10 328 pgoff_t index = start / PAGE_SIZE; a8df8a89788037 David Howells 2022-09-10 329 ssize_t ret; a8df8a89788037 David Howells 2022-09-10 330 size_t offset, len; a8df8a89788037 David Howells 2022-09-10 331 XA_STATE(xas, xa, index); a8df8a89788037 David Howells 2022-09-10 332 a8df8a89788037 David Howells 2022-09-10 333 rcu_read_lock(); a8df8a89788037 David Howells 2022-09-10 334 xas_for_each(&xas, folio, ULONG_MAX) { a8df8a89788037 David Howells 2022-09-10 335 if (xas_retry(&xas, folio)) a8df8a89788037 David Howells 2022-09-10 336 continue; a8df8a89788037 David Howells 2022-09-10 337 if (WARN_ON(xa_is_value(folio))) a8df8a89788037 David Howells 2022-09-10 338 break; a8df8a89788037 David Howells 2022-09-10 339 if (WARN_ON(folio_test_hugetlb(folio))) a8df8a89788037 David Howells 2022-09-10 340 break; a8df8a89788037 David Howells 2022-09-10 341 a8df8a89788037 David Howells 2022-09-10 342 offset = offset_in_folio(folio, start); a8df8a89788037 David Howells 2022-09-10 343 len = min_t(size_t, maxsize, folio_size(folio) - offset); a8df8a89788037 David Howells 2022-09-10 344 a8df8a89788037 David Howells 2022-09-10 345 ix = extract_contig_pages(array, folio_page(folio, 0), a8df8a89788037 David Howells 2022-09-10 346 offset, len, dest); a8df8a89788037 David Howells 2022-09-10 347 maxsize -= len; a8df8a89788037 David Howells 2022-09-10 348 ret += len; a8df8a89788037 David Howells 2022-09-10 349 if (ix >= array_max) { a8df8a89788037 David Howells 2022-09-10 350 WARN_ON_ONCE(ix > array_max); a8df8a89788037 David Howells 2022-09-10 351 break; a8df8a89788037 David Howells 2022-09-10 352 } a8df8a89788037 David Howells 2022-09-10 353 a8df8a89788037 David Howells 2022-09-10 354 if (maxsize <= 0) a8df8a89788037 David Howells 2022-09-10 355 break; a8df8a89788037 David Howells 2022-09-10 356 } a8df8a89788037 David Howells 2022-09-10 357 a8df8a89788037 David Howells 2022-09-10 358 rcu_read_unlock(); a8df8a89788037 David Howells 2022-09-10 359 terminate_array(array, dest); a8df8a89788037 David Howells 2022-09-10 @360 return ret; a8df8a89788037 David Howells 2022-09-10 361 } a8df8a89788037 David Howells 2022-09-10 362 -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
