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Message-Id: <20240813081242.3991814-1-make24@iscas.ac.cn>
Date: Tue, 13 Aug 2024 16:12:42 +0800
From: Ma Ke <make24@...as.ac.cn>
To: nbd@....name,
lorenzo@...nel.org,
ryder.lee@...iatek.com,
shayne.chen@...iatek.com,
sean.wang@...iatek.com,
kvalo@...nel.org,
matthias.bgg@...il.com,
angelogioacchino.delregno@...labora.com,
chui-hao.chiu@...iatek.com,
howard-yh.hsu@...iatek.com,
StanleyYP.Wang@...iatek.com,
benjamin-jw.lin@...iatek.com,
allen.ye@...iatek.com,
chank.chen@...iatek.com,
meichia.chiu@...iatek.com,
Bo.Jiao@...iatek.com
Cc: linux-wireless@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org,
Ma Ke <make24@...as.ac.cn>,
stable@...r.kernel.org
Subject: [PATCH] wifi: mt76: mt7996: fix NULL pointer dereference in mt7996_mcu_sta_bfer_he
Fix the NULL pointer dereference in mt7996_mcu_sta_bfer_he
routine adding an sta interface to the mt7996 driver.
Found by code review.
Cc: stable@...r.kernel.org
Fixes: 98686cd21624 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices")
Signed-off-by: Ma Ke <make24@...as.ac.cn>
---
drivers/net/wireless/mediatek/mt76/mt7996/mcu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
index 2e4fa9f48dfb..cba28d8d5562 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
@@ -1544,6 +1544,9 @@ mt7996_mcu_sta_bfer_he(struct ieee80211_sta *sta, struct ieee80211_vif *vif,
u8 nss_mcs = mt7996_mcu_get_sta_nss(mcs_map);
u8 snd_dim, sts;
+ if (!vc)
+ return;
+
bf->tx_mode = MT_PHY_TYPE_HE_SU;
mt7996_mcu_sta_sounding_rate(bf);
--
2.25.1
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