This is a note to let you know that I've just added the patch titled
md/raid5: fix miscalculation of 'end_sector' in raid5_read_one_chunk()
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
md-raid5-fix-miscalculation-of-end_sector-in-raid5_read_one_chunk.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8557dc27126949c702bd3aafe8a7e0b7e4fcb44c Mon Sep 17 00:00:00 2001
From: Yu Kuai <yukuai3@xxxxxxxxxx>
Date: Wed, 24 May 2023 09:41:18 +0800
Subject: md/raid5: fix miscalculation of 'end_sector' in raid5_read_one_chunk()
From: Yu Kuai <yukuai3@xxxxxxxxxx>
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@xxxxxxxxxxxxxxx # v5.12+
Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Song Liu <song@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230524014118.3172781-1-yukuai1@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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))
Patches currently in stable-queue which might be from yukuai3@xxxxxxxxxx are
queue-6.1/md-raid5-fix-miscalculation-of-end_sector-in-raid5_read_one_chunk.patch
