Commit 8557dc27 authored by Yu Kuai's avatar Yu Kuai Committed by Song Liu
Browse files

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 e82ed3a4 ("md/raid6: refactor
raid5_read_one_chunk") changes the calculation of 'end_sector' to offset
to the array. Fix this miscalculation.

Fixes: e82ed3a4 ("md/raid6: refactor raid5_read_one_chunk")
Cc: stable@vger.kernel.org # v5.12+
Signed-off-by: default avatarYu Kuai <yukuai3@huawei.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarSong Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20230524014118.3172781-1-yukuai1@huaweicloud.com
parent 3eb96946

drivers/md/raid5.c

+1 −1
Original line number Diff line number Diff line
@@ -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))