devm_kasprintf() can return a NULL pointer on failure,but this
returned value in mt7996_thermal_init() is not checked.
Add NULL check in mt7996_thermal_init(), to handle kernel NULL
pointer dereference error.
Fixes: 69d54ce7491d ("wifi: mt76: mt7996: switch to single multi-radio wiphy")
Signed-off-by: Charles Han <hanchunchao@xxxxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/mt7996/init.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/init.c b/drivers/net/wireless/mediatek/mt76/mt7996/init.c
index 6b660424aedc..5af52bd1f1f1 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/init.c
@@ -217,6 +217,9 @@ static int mt7996_thermal_init(struct mt7996_phy *phy)
name = devm_kasprintf(&wiphy->dev, GFP_KERNEL, "mt7996_%s.%d",
wiphy_name(wiphy), phy->mt76->band_idx);
+ if (!name)
+ return -ENOMEM;
+
snprintf(cname, sizeof(cname), "cooling_device%d", phy->mt76->band_idx);
cdev = thermal_cooling_device_register(name, phy, &mt7996_thermal_ops);
--
2.43.0
