linux-kernel - [PATCH] dm raid: add cleanup in raid

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Date:   Sun, 18 Aug 2019 19:18:34 -0500
From:   Wenwen Wang <wenwen@...uga.edu>
To:     Wenwen Wang <wenwen@...uga.edu>
Cc:     Alasdair Kergon <agk@...hat.com>,
        Mike Snitzer <snitzer@...hat.com>,
        dm-devel@...hat.com (maintainer:DEVICE-MAPPER (LVM)),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] dm raid: add cleanup in raid_ctr()

If rs_prepare_reshape() fails, no cleanup is executed, leading to
memory/resource leaks. To fix this issue, go to the label 'bad' if the
error occurs.

Signed-off-by: Wenwen Wang <wenwen@...uga.edu>
---
 drivers/md/dm-raid.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index 8a60a4a..1f933dd 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -3194,7 +3194,7 @@ static int raid_ctr(struct dm_target *ti, unsigned int argc, char **argv)
 			  */
 			r = rs_prepare_reshape(rs);
 			if (r)
-				return r;
+				goto bad;
 
 			/* Reshaping ain't recovery, so disable recovery */
 			rs_setup_recovery(rs, MaxSector);
-- 
2.7.4