linux-kernel - [PATCH] drivers: loongson: Add check for devm

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Message-Id: <20250219032251.2592699-1-haoxiang_li2024@163.com>
Date: Wed, 19 Feb 2025 11:22:51 +0800
From: Haoxiang Li <haoxiang_li2024@....com>
To: zhuyinbo@...ngson.cn,
	arnd@...db.de
Cc: loongarch@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Haoxiang Li <haoxiang_li2024@....com>,
	stable@...r.kernel.org
Subject: [PATCH] drivers: loongson: Add check for devm_kstrdup()

Add check for the return value of devm_kstrdup() in
loongson2_guts_probe() to catch potential exception.

Fixes: b82621ac8450 ("soc: loongson: add GUTS driver for loongson-2 platforms")
Cc: stable@...r.kernel.org
Signed-off-by: Haoxiang Li <haoxiang_li2024@....com>
---
 drivers/soc/loongson/loongson2_guts.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/soc/loongson/loongson2_guts.c b/drivers/soc/loongson/loongson2_guts.c
index ae42e3a9127f..26212cfcf6b0 100644
--- a/drivers/soc/loongson/loongson2_guts.c
+++ b/drivers/soc/loongson/loongson2_guts.c
@@ -117,6 +117,8 @@ static int loongson2_guts_probe(struct platform_device *pdev)
 	if (machine)
 		soc_dev_attr.machine = devm_kstrdup(dev, machine, GFP_KERNEL);
 
+	if (!soc_dev_attr.machine)
+		return -ENOMEM;
 	svr = loongson2_guts_get_svr();
 	soc_die = loongson2_soc_die_match(svr, loongson2_soc_die);
 	if (soc_die) {
-- 
2.25.1