From: Muhammad Usama Anjum <usama.anjum@collabora.com>
To: Felix Fietkau <nbd@nbd.name>,
Lorenzo Bianconi <lorenzo@kernel.org>,
Ryder Lee <ryder.lee@mediatek.com>,
Shayne Chen <shayne.chen@mediatek.com>,
Sean Wang <sean.wang@mediatek.com>, Kalle Valo <kvalo@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>
Cc: Muhammad Usama Anjum <usama.anjum@collabora.com>,
kernel@collabora.com, kernel-janitors@vger.kernel.org,
linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org
Subject: [PATCH] wifi: mt76: connac: check for null before dereferencing
Date: Fri, 1 Mar 2024 19:44:06 +0500 [thread overview]
Message-ID: <20240301144406.2808307-1-usama.anjum@collabora.com> (raw)
The wcid can be NULL. It should be checked for validity before
dereferencing it to avoid crash.
Fixes: 098428c400ff ("wifi: mt76: connac: set correct muar_idx for mt799x chipsets")
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
---
drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
index af0c2b2aacb00..7af60eebe517a 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
@@ -283,7 +283,7 @@ __mt76_connac_mcu_alloc_sta_req(struct mt76_dev *dev, struct mt76_vif *mvif,
};
struct sk_buff *skb;
- if (is_mt799x(dev) && !wcid->sta)
+ if (is_mt799x(dev) && wcid && !wcid->sta)
hdr.muar_idx = 0xe;
mt76_connac_mcu_get_wlan_idx(dev, wcid, &hdr.wlan_idx_lo,
--
2.39.2
next reply other threads:[~2024-03-01 14:43 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-01 14:44 Muhammad Usama Anjum [this message]
2024-03-04 10:17 ` [PATCH] wifi: mt76: connac: check for null before dereferencing AngeloGioacchino Del Regno
2024-03-11 17:11 ` Muhammad Usama Anjum
2024-04-04 11:49 ` Muhammad Usama Anjum
2024-04-04 11:51 ` Felix Fietkau
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