Hi Matthew, kernel test robot noticed the following build warnings: [auto build test WARNING on v6.12-rc3] [also build test WARNING on linus/master next-20241017] [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/Matthew-Wilcox-Oracle/ecryptfs-Convert-ecryptfs_writepage-to-ecryptfs_writepages/20241017-232033 base: v6.12-rc3 patch link: https://lore.kernel.org/r/20241017151709.2713048-9-willy%40infradead.org patch subject: [PATCH 08/10] ecryptfs: Convert ecryptfs_decrypt_page() to take a folio config: x86_64-buildonly-randconfig-002-20241018 (https://download.01.org/0day-ci/archive/20241018/202410181420.B8LE1KXl-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241018/202410181420.B8LE1KXl-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/202410181420.B8LE1KXl-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): fs/ecryptfs/crypto.c:410: warning: Function parameter or struct member 'folio' not described in 'ecryptfs_encrypt_page' fs/ecryptfs/crypto.c:410: warning: Excess function parameter 'page' description in 'ecryptfs_encrypt_page' >> fs/ecryptfs/crypto.c:479: warning: Function parameter or struct member 'folio' not described in 'ecryptfs_decrypt_page' >> fs/ecryptfs/crypto.c:479: warning: Excess function parameter 'page' description in 'ecryptfs_decrypt_page' vim +479 fs/ecryptfs/crypto.c 237fead619984c Michael Halcrow 2006-10-04 392 237fead619984c Michael Halcrow 2006-10-04 393 /** 0216f7f7921759 Michael Halcrow 2007-10-16 394 * ecryptfs_encrypt_page 0216f7f7921759 Michael Halcrow 2007-10-16 395 * @page: Page mapped from the eCryptfs inode for the file; contains 0216f7f7921759 Michael Halcrow 2007-10-16 396 * decrypted content that needs to be encrypted (to a temporary 0216f7f7921759 Michael Halcrow 2007-10-16 397 * page; not in place) and written out to the lower file 237fead619984c Michael Halcrow 2006-10-04 398 * 0216f7f7921759 Michael Halcrow 2007-10-16 399 * Encrypt an eCryptfs page. This is done on a per-extent basis. Note 237fead619984c Michael Halcrow 2006-10-04 400 * that eCryptfs pages may straddle the lower pages -- for instance, 237fead619984c Michael Halcrow 2006-10-04 401 * if the file was created on a machine with an 8K page size 237fead619984c Michael Halcrow 2006-10-04 402 * (resulting in an 8K header), and then the file is copied onto a 237fead619984c Michael Halcrow 2006-10-04 403 * host with a 32K page size, then when reading page 0 of the eCryptfs 237fead619984c Michael Halcrow 2006-10-04 404 * file, 24K of page 0 of the lower file will be read and decrypted, 237fead619984c Michael Halcrow 2006-10-04 405 * and then 8K of page 1 of the lower file will be read and decrypted. 237fead619984c Michael Halcrow 2006-10-04 406 * 237fead619984c Michael Halcrow 2006-10-04 407 * Returns zero on success; negative on error 237fead619984c Michael Halcrow 2006-10-04 408 */ 722a8483fde078 Matthew Wilcox (Oracle 2024-10-17 409) int ecryptfs_encrypt_page(struct folio *folio) 237fead619984c Michael Halcrow 2006-10-04 @410 { 0216f7f7921759 Michael Halcrow 2007-10-16 411 struct inode *ecryptfs_inode; 237fead619984c Michael Halcrow 2006-10-04 412 struct ecryptfs_crypt_stat *crypt_stat; 7fcba054373d5d Eric Sandeen 2008-07-28 413 char *enc_extent_virt; 7fcba054373d5d Eric Sandeen 2008-07-28 414 struct page *enc_extent_page = NULL; 0216f7f7921759 Michael Halcrow 2007-10-16 415 loff_t extent_offset; 0f89617623fed9 Tyler Hicks 2013-04-15 416 loff_t lower_offset; 237fead619984c Michael Halcrow 2006-10-04 417 int rc = 0; 237fead619984c Michael Halcrow 2006-10-04 418 722a8483fde078 Matthew Wilcox (Oracle 2024-10-17 419) ecryptfs_inode = folio->mapping->host; 0216f7f7921759 Michael Halcrow 2007-10-16 420 crypt_stat = 0216f7f7921759 Michael Halcrow 2007-10-16 421 &(ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat); 13a791b4e63eb0 Tyler Hicks 2009-04-13 422 BUG_ON(!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)); 7fcba054373d5d Eric Sandeen 2008-07-28 423 enc_extent_page = alloc_page(GFP_USER); 7fcba054373d5d Eric Sandeen 2008-07-28 424 if (!enc_extent_page) { 237fead619984c Michael Halcrow 2006-10-04 425 rc = -ENOMEM; 0216f7f7921759 Michael Halcrow 2007-10-16 426 ecryptfs_printk(KERN_ERR, "Error allocating memory for " 0216f7f7921759 Michael Halcrow 2007-10-16 427 "encrypted extent\n"); 237fead619984c Michael Halcrow 2006-10-04 428 goto out; 237fead619984c Michael Halcrow 2006-10-04 429 } 0f89617623fed9 Tyler Hicks 2013-04-15 430 0216f7f7921759 Michael Halcrow 2007-10-16 431 for (extent_offset = 0; 09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 432 extent_offset < (PAGE_SIZE / crypt_stat->extent_size); 0216f7f7921759 Michael Halcrow 2007-10-16 433 extent_offset++) { 722a8483fde078 Matthew Wilcox (Oracle 2024-10-17 434) rc = crypt_extent(crypt_stat, enc_extent_page, 722a8483fde078 Matthew Wilcox (Oracle 2024-10-17 435) folio_page(folio, 0), extent_offset, ENCRYPT); 237fead619984c Michael Halcrow 2006-10-04 436 if (rc) { 0216f7f7921759 Michael Halcrow 2007-10-16 437 printk(KERN_ERR "%s: Error encrypting extent; " 18d1dbf1d401e8 Harvey Harrison 2008-04-29 438 "rc = [%d]\n", __func__, rc); 237fead619984c Michael Halcrow 2006-10-04 439 goto out; 237fead619984c Michael Halcrow 2006-10-04 440 } 237fead619984c Michael Halcrow 2006-10-04 441 } 0216f7f7921759 Michael Halcrow 2007-10-16 442 722a8483fde078 Matthew Wilcox (Oracle 2024-10-17 443) lower_offset = lower_offset_for_page(crypt_stat, &folio->page); 8b70deb8ca901d Fabio M. De Francesco 2023-04-26 444 enc_extent_virt = kmap_local_page(enc_extent_page); 0f89617623fed9 Tyler Hicks 2013-04-15 445 rc = ecryptfs_write_lower(ecryptfs_inode, enc_extent_virt, lower_offset, 09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 446 PAGE_SIZE); 8b70deb8ca901d Fabio M. De Francesco 2023-04-26 447 kunmap_local(enc_extent_virt); 0216f7f7921759 Michael Halcrow 2007-10-16 448 if (rc < 0) { 0f89617623fed9 Tyler Hicks 2013-04-15 449 ecryptfs_printk(KERN_ERR, 0f89617623fed9 Tyler Hicks 2013-04-15 450 "Error attempting to write lower page; rc = [%d]\n", 0216f7f7921759 Michael Halcrow 2007-10-16 451 rc); 237fead619984c Michael Halcrow 2006-10-04 452 goto out; 237fead619984c Michael Halcrow 2006-10-04 453 } 237fead619984c Michael Halcrow 2006-10-04 454 rc = 0; 0216f7f7921759 Michael Halcrow 2007-10-16 455 out: 7fcba054373d5d Eric Sandeen 2008-07-28 456 if (enc_extent_page) { 7fcba054373d5d Eric Sandeen 2008-07-28 457 __free_page(enc_extent_page); 7fcba054373d5d Eric Sandeen 2008-07-28 458 } 0216f7f7921759 Michael Halcrow 2007-10-16 459 return rc; 0216f7f7921759 Michael Halcrow 2007-10-16 460 } 0216f7f7921759 Michael Halcrow 2007-10-16 461 0216f7f7921759 Michael Halcrow 2007-10-16 462 /** 0216f7f7921759 Michael Halcrow 2007-10-16 463 * ecryptfs_decrypt_page 0216f7f7921759 Michael Halcrow 2007-10-16 464 * @page: Page mapped from the eCryptfs inode for the file; data read 0216f7f7921759 Michael Halcrow 2007-10-16 465 * and decrypted from the lower file will be written into this 0216f7f7921759 Michael Halcrow 2007-10-16 466 * page 0216f7f7921759 Michael Halcrow 2007-10-16 467 * 0216f7f7921759 Michael Halcrow 2007-10-16 468 * Decrypt an eCryptfs page. This is done on a per-extent basis. Note 0216f7f7921759 Michael Halcrow 2007-10-16 469 * that eCryptfs pages may straddle the lower pages -- for instance, 0216f7f7921759 Michael Halcrow 2007-10-16 470 * if the file was created on a machine with an 8K page size 0216f7f7921759 Michael Halcrow 2007-10-16 471 * (resulting in an 8K header), and then the file is copied onto a 0216f7f7921759 Michael Halcrow 2007-10-16 472 * host with a 32K page size, then when reading page 0 of the eCryptfs 0216f7f7921759 Michael Halcrow 2007-10-16 473 * file, 24K of page 0 of the lower file will be read and decrypted, 0216f7f7921759 Michael Halcrow 2007-10-16 474 * and then 8K of page 1 of the lower file will be read and decrypted. 0216f7f7921759 Michael Halcrow 2007-10-16 475 * 0216f7f7921759 Michael Halcrow 2007-10-16 476 * Returns zero on success; negative on error 0216f7f7921759 Michael Halcrow 2007-10-16 477 */ 9f117fd1efdb64 Matthew Wilcox (Oracle 2024-10-17 478) int ecryptfs_decrypt_page(struct folio *folio) 0216f7f7921759 Michael Halcrow 2007-10-16 @479 { 0216f7f7921759 Michael Halcrow 2007-10-16 480 struct inode *ecryptfs_inode; 0216f7f7921759 Michael Halcrow 2007-10-16 481 struct ecryptfs_crypt_stat *crypt_stat; 9c6043f41222b4 Tyler Hicks 2013-04-06 482 char *page_virt; 0216f7f7921759 Michael Halcrow 2007-10-16 483 unsigned long extent_offset; 0f89617623fed9 Tyler Hicks 2013-04-15 484 loff_t lower_offset; 0216f7f7921759 Michael Halcrow 2007-10-16 485 int rc = 0; 0216f7f7921759 Michael Halcrow 2007-10-16 486 9f117fd1efdb64 Matthew Wilcox (Oracle 2024-10-17 487) ecryptfs_inode = folio->mapping->host; 0216f7f7921759 Michael Halcrow 2007-10-16 488 crypt_stat = 0216f7f7921759 Michael Halcrow 2007-10-16 489 &(ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat); 13a791b4e63eb0 Tyler Hicks 2009-04-13 490 BUG_ON(!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)); 0f89617623fed9 Tyler Hicks 2013-04-15 491 9f117fd1efdb64 Matthew Wilcox (Oracle 2024-10-17 492) lower_offset = lower_offset_for_page(crypt_stat, &folio->page); 9f117fd1efdb64 Matthew Wilcox (Oracle 2024-10-17 493) page_virt = kmap_local_folio(folio, 0); 09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 494 rc = ecryptfs_read_lower(page_virt, lower_offset, PAGE_SIZE, 0216f7f7921759 Michael Halcrow 2007-10-16 495 ecryptfs_inode); 8b70deb8ca901d Fabio M. De Francesco 2023-04-26 496 kunmap_local(page_virt); 96a7b9c2f5df89 Tyler Hicks 2009-09-16 497 if (rc < 0) { 0f89617623fed9 Tyler Hicks 2013-04-15 498 ecryptfs_printk(KERN_ERR, 0f89617623fed9 Tyler Hicks 2013-04-15 499 "Error attempting to read lower page; rc = [%d]\n", 0f89617623fed9 Tyler Hicks 2013-04-15 500 rc); 16a72c455a67bb Michael Halcrow 2007-10-16 501 goto out; 0216f7f7921759 Michael Halcrow 2007-10-16 502 } 0f89617623fed9 Tyler Hicks 2013-04-15 503 0216f7f7921759 Michael Halcrow 2007-10-16 504 for (extent_offset = 0; 09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 505 extent_offset < (PAGE_SIZE / crypt_stat->extent_size); 0216f7f7921759 Michael Halcrow 2007-10-16 506 extent_offset++) { 9f117fd1efdb64 Matthew Wilcox (Oracle 2024-10-17 507) struct page *page = folio_page(folio, 0); 0df5ed65c14e2c Tyler Hicks 2013-05-23 508 rc = crypt_extent(crypt_stat, page, page, d78de618962d1e Tyler Hicks 2013-04-06 509 extent_offset, DECRYPT); 0216f7f7921759 Michael Halcrow 2007-10-16 510 if (rc) { 1abbe1106d48ab Sascha Hauer 2021-02-24 511 printk(KERN_ERR "%s: Error decrypting extent; " 18d1dbf1d401e8 Harvey Harrison 2008-04-29 512 "rc = [%d]\n", __func__, rc); 16a72c455a67bb Michael Halcrow 2007-10-16 513 goto out; 237fead619984c Michael Halcrow 2006-10-04 514 } 237fead619984c Michael Halcrow 2006-10-04 515 } 237fead619984c Michael Halcrow 2006-10-04 516 out: 237fead619984c Michael Halcrow 2006-10-04 517 return rc; 237fead619984c Michael Halcrow 2006-10-04 518 } 237fead619984c Michael Halcrow 2006-10-04 519 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
