linux-kernel - [PATCH] powercap: Check dev_set

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>] [day] [month] [year] [list]

Message-Id: <20241211020645.2123881-1-make_ruc2021@163.com>
Date: Wed, 11 Dec 2024 10:06:45 +0800
From: Ma Ke <make_ruc2021@....com>
To: rafael@...nel.org
Cc: linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Ma Ke <make_ruc2021@....com>
Subject: [PATCH] powercap: Check dev_set_name() return value

It's possible that dev_set_name() returns -ENOMEM. We could catch and
handle it by adding dev_set_name() return value check.

Signed-off-by: Ma Ke <make_ruc2021@....com>
---
 drivers/powercap/powercap_sys.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/powercap/powercap_sys.c b/drivers/powercap/powercap_sys.c
index 52c32dcbf7d8..11db93b10aa5 100644
--- a/drivers/powercap/powercap_sys.c
+++ b/drivers/powercap/powercap_sys.c
@@ -552,9 +552,12 @@ struct powercap_zone *powercap_register_zone(
 	power_zone->dev_attr_groups[0] = &power_zone->dev_zone_attr_group;
 	power_zone->dev_attr_groups[1] = NULL;
 	power_zone->dev.groups = power_zone->dev_attr_groups;
-	dev_set_name(&power_zone->dev, "%s:%x",
+	result = dev_set_name(&power_zone->dev, "%s:%x",
 					dev_name(power_zone->dev.parent),
 					power_zone->id);
+	if (result)
+		goto err_dev_ret;
+
 	result = device_register(&power_zone->dev);
 	if (result) {
 		put_device(&power_zone->dev);
-- 
2.25.1