linux-kernel - [PATCH] mtd: partitions: Fix refcount leak in parse_redboot

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Date:   Thu, 26 May 2022 15:06:49 +0400
From:   Miaoqian Lin <linmq006@...il.com>
To:     Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Miaoqian Lin <linmq006@...il.com>,
        Corentin Labbe <clabbe@...libre.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] mtd: partitions: Fix refcount leak in parse_redboot_of

of_get_child_by_name() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak.

Fixes: 237960880960 ("mtd: partitions: redboot: seek fis-index-block in the right node")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/mtd/parsers/redboot.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/parsers/redboot.c b/drivers/mtd/parsers/redboot.c
index feb44a573d44..a16b42a88581 100644
--- a/drivers/mtd/parsers/redboot.c
+++ b/drivers/mtd/parsers/redboot.c
@@ -58,6 +58,7 @@ static void parse_redboot_of(struct mtd_info *master)
 		return;
 
 	ret = of_property_read_u32(npart, "fis-index-block", &dirblock);
+	of_node_put(npart);
 	if (ret)
 		return;
 
-- 
2.25.1