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From: Ma Ke <make24@iscas.ac.cn>
To: nbd@nbd.name, lorenzo@kernel.org, ryder.lee@mediatek.com,
	shayne.chen@mediatek.com, sean.wang@mediatek.com,
	kvalo@kernel.org, matthias.bgg@gmail.com,
	angelogioacchino.delregno@collabora.com, ruanjinjie@huawei.com,
	make24@iscas.ac.cn
Cc: linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org, stable@vger.kernel.org
Subject: [PATCH] mt76: mt7615: check devm_kasprintf() returned value
Date: Thu,  5 Sep 2024 09:47:53 +0800	[thread overview]
Message-ID: <20240905014753.353271-1-make24@iscas.ac.cn> (raw)

devm_kasprintf() can return a NULL pointer on failure but this returned
value is not checked. Fix this lack and check the returned value.

Found by code review.

Cc: stable@vger.kernel.org
Fixes: 0bb4e9187ea4 ("mt76: mt7615: fix hwmon temp sensor mem use-after-free")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
---
 drivers/net/wireless/mediatek/mt76/mt7615/init.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
index f7722f67db57..0b9ebdcda221 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
@@ -56,6 +56,9 @@ int mt7615_thermal_init(struct mt7615_dev *dev)
 
 	name = devm_kasprintf(&wiphy->dev, GFP_KERNEL, "mt7615_%s",
 			      wiphy_name(wiphy));
+	if (!name)
+		return -ENOMEM;
+
 	hwmon = devm_hwmon_device_register_with_groups(&wiphy->dev, name, dev,
 						       mt7615_hwmon_groups);
 	return PTR_ERR_OR_ZERO(hwmon);
-- 
2.25.1


             reply	other threads:[~2024-09-05  1:48 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-09-05  1:47 Ma Ke [this message]
2024-09-05  8:01 ` Matthias Brugger

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