CC: [email protected] TO: Kees Cook <[email protected]> CC: Chao Yu <[email protected]>, Chao Yu <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: de44d2b59b0fc49b84d711d815dfc2ef0a272912 commit: 3f649ab728cda8038259d8f14492fe400fbab911 [7815/13515] treewide: Remove uninitialized_var() usage :::::: branch date: 22 hours ago :::::: commit date: 3 weeks ago config: x86_64-randconfig-m001-20200804 (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> Reported-by: Dan Carpenter <[email protected]> New smatch warnings: drivers/md/raid5.c:2646 raid5_end_write_request() error: uninitialized symbol 'rdev'. Old smatch warnings: drivers/md/raid5.c:2651 raid5_end_write_request() error: uninitialized symbol 'rdev'. drivers/md/raid5.c:6693 alloc_thread_groups() warn: double check that we're allocating correct size: 216 vs 1 drivers/md/raid5.c:6913 setup_conf() warn: should 'mddev->new_chunk_sectors << 9' be a 64 bit type? # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=3f649ab728cda8038259d8f14492fe400fbab911 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git remote update linux-next git checkout 3f649ab728cda8038259d8f14492fe400fbab911 vim +/rdev +2646 drivers/md/raid5.c ^1da177e4c3f41 Linus Torvalds 2005-04-16 2598 4246a0b63bd8f5 Christoph Hellwig 2015-07-20 2599 static void raid5_end_write_request(struct bio *bi) ^1da177e4c3f41 Linus Torvalds 2005-04-16 2600 { ^1da177e4c3f41 Linus Torvalds 2005-04-16 2601 struct stripe_head *sh = bi->bi_private; d1688a6d5515f1 NeilBrown 2011-10-11 2602 struct r5conf *conf = sh->raid_conf; 7ecaa1e6a1ad69 NeilBrown 2006-03-27 2603 int disks = sh->disks, i; 3f649ab728cda8 Kees Cook 2020-06-03 2604 struct md_rdev *rdev; b84db560ead541 NeilBrown 2011-07-28 2605 sector_t first_bad; b84db560ead541 NeilBrown 2011-07-28 2606 int bad_sectors; 977df36255ab0e NeilBrown 2011-12-23 2607 int replacement = 0; ^1da177e4c3f41 Linus Torvalds 2005-04-16 2608 977df36255ab0e NeilBrown 2011-12-23 2609 for (i = 0 ; i < disks; i++) { 977df36255ab0e NeilBrown 2011-12-23 2610 if (bi == &sh->dev[i].req) { 977df36255ab0e NeilBrown 2011-12-23 2611 rdev = conf->disks[i].rdev; ^1da177e4c3f41 Linus Torvalds 2005-04-16 2612 break; 977df36255ab0e NeilBrown 2011-12-23 2613 } 977df36255ab0e NeilBrown 2011-12-23 2614 if (bi == &sh->dev[i].rreq) { 977df36255ab0e NeilBrown 2011-12-23 2615 rdev = conf->disks[i].replacement; dd054fce88d33d NeilBrown 2011-12-23 2616 if (rdev) 977df36255ab0e NeilBrown 2011-12-23 2617 replacement = 1; dd054fce88d33d NeilBrown 2011-12-23 2618 else dd054fce88d33d NeilBrown 2011-12-23 2619 /* rdev was removed and 'replacement' dd054fce88d33d NeilBrown 2011-12-23 2620 * replaced it. rdev is not removed dd054fce88d33d NeilBrown 2011-12-23 2621 * until all requests are finished. dd054fce88d33d NeilBrown 2011-12-23 2622 */ dd054fce88d33d NeilBrown 2011-12-23 2623 rdev = conf->disks[i].rdev; 977df36255ab0e NeilBrown 2011-12-23 2624 break; 977df36255ab0e NeilBrown 2011-12-23 2625 } 977df36255ab0e NeilBrown 2011-12-23 2626 } 4246a0b63bd8f5 Christoph Hellwig 2015-07-20 2627 pr_debug("end_write_request %llu/%d, count %d, error: %d.\n", ^1da177e4c3f41 Linus Torvalds 2005-04-16 2628 (unsigned long long)sh->sector, i, atomic_read(&sh->count), 4e4cbee93d5613 Christoph Hellwig 2017-06-03 2629 bi->bi_status); ^1da177e4c3f41 Linus Torvalds 2005-04-16 2630 if (i == disks) { 5f9d1fde7d54a5 Shaohua Li 2016-08-22 2631 bio_reset(bi); ^1da177e4c3f41 Linus Torvalds 2005-04-16 2632 BUG(); 6712ecf8f64811 NeilBrown 2007-09-27 2633 return; ^1da177e4c3f41 Linus Torvalds 2005-04-16 2634 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 2635 977df36255ab0e NeilBrown 2011-12-23 2636 if (replacement) { 4e4cbee93d5613 Christoph Hellwig 2017-06-03 2637 if (bi->bi_status) 977df36255ab0e NeilBrown 2011-12-23 2638 md_error(conf->mddev, rdev); 977df36255ab0e NeilBrown 2011-12-23 2639 else if (is_badblock(rdev, sh->sector, 977df36255ab0e NeilBrown 2011-12-23 2640 STRIPE_SECTORS, 977df36255ab0e NeilBrown 2011-12-23 2641 &first_bad, &bad_sectors)) 977df36255ab0e NeilBrown 2011-12-23 2642 set_bit(R5_MadeGoodRepl, &sh->dev[i].flags); 977df36255ab0e NeilBrown 2011-12-23 2643 } else { 4e4cbee93d5613 Christoph Hellwig 2017-06-03 2644 if (bi->bi_status) { 9f97e4b128d2ea NeilBrown 2014-01-16 2645 set_bit(STRIPE_DEGRADED, &sh->state); 977df36255ab0e NeilBrown 2011-12-23 @2646 set_bit(WriteErrorSeen, &rdev->flags); bc2607f393bd4f NeilBrown 2011-07-28 2647 set_bit(R5_WriteError, &sh->dev[i].flags); 3a6de2924af602 NeilBrown 2011-12-23 2648 if (!test_and_set_bit(WantReplacement, &rdev->flags)) 3a6de2924af602 NeilBrown 2011-12-23 2649 set_bit(MD_RECOVERY_NEEDED, 3a6de2924af602 NeilBrown 2011-12-23 2650 &rdev->mddev->recovery); 977df36255ab0e NeilBrown 2011-12-23 2651 } else if (is_badblock(rdev, sh->sector, 977df36255ab0e NeilBrown 2011-12-23 2652 STRIPE_SECTORS, c0b32972fb1e11 NeilBrown 2013-04-24 2653 &first_bad, &bad_sectors)) { b84db560ead541 NeilBrown 2011-07-28 2654 set_bit(R5_MadeGood, &sh->dev[i].flags); c0b32972fb1e11 NeilBrown 2013-04-24 2655 if (test_bit(R5_ReadError, &sh->dev[i].flags)) c0b32972fb1e11 NeilBrown 2013-04-24 2656 /* That was a successful write so make c0b32972fb1e11 NeilBrown 2013-04-24 2657 * sure it looks like we already did c0b32972fb1e11 NeilBrown 2013-04-24 2658 * a re-write. c0b32972fb1e11 NeilBrown 2013-04-24 2659 */ c0b32972fb1e11 NeilBrown 2013-04-24 2660 set_bit(R5_ReWrite, &sh->dev[i].flags); c0b32972fb1e11 NeilBrown 2013-04-24 2661 } 977df36255ab0e NeilBrown 2011-12-23 2662 } 977df36255ab0e NeilBrown 2011-12-23 2663 rdev_dec_pending(rdev, conf->mddev); ^1da177e4c3f41 Linus Torvalds 2005-04-16 2664 4e4cbee93d5613 Christoph Hellwig 2017-06-03 2665 if (sh->batch_head && bi->bi_status && !replacement) 72ac733015bbdc [email protected] 2014-12-15 2666 set_bit(STRIPE_BATCH_ERR, &sh->batch_head->state); 72ac733015bbdc [email protected] 2014-12-15 2667 c94455558337ee Shaohua Li 2016-09-08 2668 bio_reset(bi); 977df36255ab0e NeilBrown 2011-12-23 2669 if (!test_and_clear_bit(R5_DOUBLE_LOCKED, &sh->dev[i].flags)) ^1da177e4c3f41 Linus Torvalds 2005-04-16 2670 clear_bit(R5_LOCKED, &sh->dev[i].flags); ^1da177e4c3f41 Linus Torvalds 2005-04-16 2671 set_bit(STRIPE_HANDLE, &sh->state); 6d036f7d52e5a9 Shaohua Li 2015-08-13 2672 raid5_release_stripe(sh); 59fc630b8b5f9f [email protected] 2014-12-15 2673 59fc630b8b5f9f [email protected] 2014-12-15 2674 if (sh->batch_head && sh != sh->batch_head) 6d036f7d52e5a9 Shaohua Li 2015-08-13 2675 raid5_release_stripe(sh->batch_head); ^1da177e4c3f41 Linus Torvalds 2005-04-16 2676 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 2677 :::::: The code at line 2646 was first introduced by commit :::::: 977df36255ab0ea78b048cbc9055300c586dcc91 md/raid5: writes should get directed to replacement as well as original. :::::: TO: NeilBrown <[email protected]> :::::: CC: NeilBrown <[email protected]> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
_______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
