From: Yu Kuai yukuai3@huawei.com
commit 8557dc27126949c702bd3aafe8a7e0b7e4fcb44c upstream.
'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 yukuai3@huawei.com Reviewed-by: Christoph Hellwig hch@lst.de Signed-off-by: Song Liu song@kernel.org Link: https://lore.kernel.org/r/20230524014118.3172781-1-yukuai1@huaweicloud.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/md/raid5.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -5516,7 +5516,7 @@ static int raid5_read_one_chunk(struct m
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))