linux-kernel - [PATCH] drivers/md: fix potential memleak

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Date:   Sun, 14 Nov 2021 19:18:17 -0800
From:   Bernard Zhao <bernard@...o.com>
To:     Song Liu <song@...nel.org>, linux-raid@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Bernard Zhao <bernard@...o.com>
Subject: [PATCH] drivers/md: fix potential memleak

In function get_bitmap_from_slot, when md_bitmap_create failed,
md_bitmap_destroy must be called to do clean up.

Signed-off-by: Bernard Zhao <bernard@...o.com>
---
 drivers/md/md-bitmap.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index bfd6026d7809..a227bd0b9301 100644
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c
@@ -1961,6 +1961,7 @@ struct bitmap *get_bitmap_from_slot(struct mddev *mddev, int slot)
 	bitmap = md_bitmap_create(mddev, slot);
 	if (IS_ERR(bitmap)) {
 		rv = PTR_ERR(bitmap);
+		md_bitmap_destroy(mddev)
 		return ERR_PTR(rv);
 	}
 
-- 
2.33.1