linux-kernel - [PATCH v2] leds: tlc591xx: fix leak of device node iterator

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Sat, 26 Sep 2020 02:51:17 +0200
From:   Tobias Jordan <kernel@...e.de>
To:     linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Pavel Machek <pavel@....cz>, Dan Murphy <dmurphy@...com>,
        Jean-Jacques Hiblot <jjhiblot@...com>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        Marek Behun <marek.behun@....cz>
Subject: [PATCH v2] leds: tlc591xx: fix leak of device node iterator

In one of the error paths of the for_each_child_of_node loop in
tlc591xx_probe, add missing call to of_node_put.

Fixes: 1ab4531ad132 ("leds: tlc591xx: simplify driver by using the
managed led API")

Signed-off-by: Tobias Jordan <kernel@...e.de>
---
v2: rebased to Pavel's for-next branch

 drivers/leds/leds-tlc591xx.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/leds/leds-tlc591xx.c b/drivers/leds/leds-tlc591xx.c
index f24271337bd8..5b9dfdf743ec 100644
--- a/drivers/leds/leds-tlc591xx.c
+++ b/drivers/leds/leds-tlc591xx.c
@@ -205,10 +205,12 @@ tlc591xx_probe(struct i2c_client *client,
 		led->ldev.max_brightness = TLC591XX_MAX_BRIGHTNESS;
 		err = devm_led_classdev_register_ext(dev, &led->ldev,
 						     &init_data);
-		if (err < 0)
+		if (err < 0) {
+			of_node_put(child);
 			return dev_err_probe(dev, err,
 					     "couldn't register LED %s\n",
 					     led->ldev.name);
+		}
 	}
 	return 0;
 }
-- 
2.20.1