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);