From: Muhammad Usama Anjum Date: Fri, 1 Mar 2024 14:44:06 +0000 (+0500) Subject: wifi: mt76: connac: check for null before dereferencing X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=cb47c7be0e93dd5acda078163799401ac3a78e10;p=linux.git wifi: mt76: connac: check for null before dereferencing 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 Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Felix Fietkau --- diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c index b8927714d7e0e..6b18fc8141bf3 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,