linux-kernel - RE: [EXT] Re: [PATCH] mwifiex: check for null return from skb

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Message-ID: <MN2PR18MB2637DAA4852542EDA2BBC01DA01A0@MN2PR18MB2637.namprd18.prod.outlook.com>
Date:   Sat, 1 Jun 2019 17:29:26 +0000
From:   Ganapathi Bhat <gbhat@...vell.com>
To:     Dan Carpenter <dan.carpenter@...cle.com>,
        Colin King <colin.king@...onical.com>
CC:     Amitkumar Karwar <amitkarwar@...il.com>,
        Nishant Sarmukadam <nishants@...vell.com>,
        Xinming Hu <huxinming820@...il.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S . Miller" <davem@...emloft.net>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [EXT] Re: [PATCH] mwifiex: check for null return from skb_copy

Hi Dan,

> >  	if (is_multicast_ether_addr(ra)) {
> >  		skb_uap = skb_copy(skb, GFP_ATOMIC);
> > +		if (!skb_uap)
> > +			return -ENOMEM;
> 
> I think we would want to free dev_kfree_skb_any(skb) before returning.
I think if the pointer is NULL, no need to free it; 

Regards,
Ganapathi