linux-kernel - Re: [PATCH] qtnfmac: fix NULL pointer dereference

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Message-ID: <20180601140848.czb4ws5nixuk4tjb@bars>
Date:   Fri, 1 Jun 2018 17:08:51 +0300
From:   Sergey Matyukevich <sergey.matyukevich.os@...ntenna.com>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Cc:     Igor Mitsyanko <imitsyanko@...ntenna.com>,
        Avinash Patil <avinashp@...ntenna.com>,
        Sergey Matyukevich <smatyukevich@...ntenna.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] qtnfmac: fix NULL pointer dereference

Hello Gustavo,

> diff --git a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
> index 220e2b7..ae0ca80 100644
> --- a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
> +++ b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
> @@ -654,8 +654,7 @@ qtnf_disconnect(struct wiphy *wiphy, struct net_device *dev,
>         vif = qtnf_mac_get_base_vif(mac);
>         if (!vif) {
>                 pr_err("MAC%u: primary VIF is not configured\n", mac->macid);
> -               ret = -EFAULT;
> -               goto out;
> +               return -EFAULT;
>         }
> 
>         if (vif->wdev.iftype != NL80211_IFTYPE_STATION) {

That was my fault. Thanks for the fix!

Reviewed-by: Sergey Matyukevich <sergey.matyukevich.os@...nenna.com>

Regards,
Sergey