linux-kernel - [PATCH 01/23] gpiolib: Correct wrong kfree() usage for `kobj->name`

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

Message-ID: <20260116081036.352286-2-tzungbi@kernel.org>
Date: Fri, 16 Jan 2026 08:10:14 +0000
From: Tzung-Bi Shih <tzungbi@...nel.org>
To: Benson Leung <bleung@...omium.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J . Wysocki" <rafael@...nel.org>,
	Danilo Krummrich <dakr@...nel.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Linus Walleij <linusw@...nel.org>
Cc: Jonathan Corbet <corbet@....net>,
	Shuah Khan <shuah@...nel.org>,
	linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	chrome-platform@...ts.linux.dev,
	linux-kselftest@...r.kernel.org,
	tzungbi@...nel.org,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Wolfram Sang <wsa+renesas@...g-engineering.com>,
	Simona Vetter <simona.vetter@...ll.ch>,
	Dan Williams <dan.j.williams@...el.com>,
	Jason Gunthorpe <jgg@...dia.com>,
	linux-gpio@...r.kernel.org,
	stable@...r.kernel.org
Subject: [PATCH 01/23] gpiolib: Correct wrong kfree() usage for `kobj->name`

`kobj->name` should be freed by kfree_const()[1][2].  Correct it.

[1] https://elixir.bootlin.com/linux/v6.18/source/lib/kasprintf.c#L41
[2] https://elixir.bootlin.com/linux/v6.18/source/lib/kobject.c#L695

Cc: stable@...r.kernel.org
Fixes: c351bb64cbe6 ("gpiolib: free device name on error path to fix kmemleak")
Signed-off-by: Tzung-Bi Shih <tzungbi@...nel.org>
---
 drivers/gpio/gpiolib.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 5eb918da7ea2..ba9323432e3a 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1263,7 +1263,7 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data,
 err_free_descs:
 	kfree(gdev->descs);
 err_free_dev_name:
-	kfree(dev_name(&gdev->dev));
+	kfree_const(dev_name(&gdev->dev));
 err_free_ida:
 	ida_free(&gpio_ida, gdev->id);
 err_free_gdev:
-- 
2.52.0.457.g6b5491de43-goog