From: Yu Kuai Date: Wed, 24 May 2023 01:41:18 +0000 (+0800) Subject: md/raid5: fix miscalculation of 'end_sector' in raid5_read_one_chunk() X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=8557dc27126949c702bd3aafe8a7e0b7e4fcb44c;p=linux.git md/raid5: fix miscalculation of 'end_sector' in raid5_read_one_chunk() 'end_sector' is compared to 'rdev->recovery_offset', which is offset to rdev, however, commit e82ed3a4fbb5 ("md/raid6: refactor raid5_read_one_chunk") changes the calculation of 'end_sector' to offset to the array. Fix this miscalculation. Fixes: e82ed3a4fbb5 ("md/raid6: refactor raid5_read_one_chunk") Cc: stable@vger.kernel.org # v5.12+ Signed-off-by: Yu Kuai Reviewed-by: Christoph Hellwig Signed-off-by: Song Liu Link: https://lore.kernel.org/r/20230524014118.3172781-1-yukuai1@huaweicloud.com --- diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 4739ed891e756..9ea285fbc4a65 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -5516,7 +5516,7 @@ static int raid5_read_one_chunk(struct mddev *mddev, struct bio *raid_bio) sector = raid5_compute_sector(conf, raid_bio->bi_iter.bi_sector, 0, &dd_idx, NULL); - end_sector = bio_end_sector(raid_bio); + end_sector = sector + bio_sectors(raid_bio); rcu_read_lock(); if (r5c_big_stripe_cached(conf, sector))