diff mbox series

mtd: partitions: Fix refcount leak in parse_redboot_of

Message ID 20220526110652.64849-1-linmq006@gmail.com
State Accepted
Headers show
Series mtd: partitions: Fix refcount leak in parse_redboot_of | expand

Commit Message

Miaoqian Lin May 26, 2022, 11:06 a.m. UTC
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@gmail.com>
---
 drivers/mtd/parsers/redboot.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Linus Walleij May 26, 2022, 2:29 p.m. UTC | #1
On Thu, May 26, 2022 at 1:07 PM Miaoqian Lin <linmq006@gmail.com> wrote:

> 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@gmail.com>

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

Yours,
Linus Walleij
Miquel Raynal June 9, 2022, 12:42 p.m. UTC | #2
On Thu, 2022-05-26 at 11:06:49 UTC, Miaoqian Lin wrote:
> 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@gmail.com>
> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git mtd/next, thanks.

Miquel
diff mbox series

Patch

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;