netdev - Re: rtl8188eu array/null comparison.

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Message-ID: <5227F710.1080602@lwfinger.net>
Date:	Wed, 04 Sep 2013 22:14:24 -0500
From:	Larry Finger <Larry.Finger@...inger.net>
To:	Dave Jones <davej@...hat.com>
CC:	netdev@...r.kernel.org
Subject: Re: rtl8188eu array/null comparison.

On 09/04/2013 06:30 PM, Dave Jones wrote:
> Hi Larry,
>
> in drivers/staging/rtl8188eu/core/rtw_mlme.c:rtw_check_join_candidate there's this code..
>
> 1721         /* check ssid, if needed */
> 1722         if (pmlmepriv->assoc_ssid.Ssid && pmlmepriv->assoc_ssid.SsidLength) {
> 1723                 if (competitor->network.Ssid.SsidLength != pmlmepriv->assoc_ssid.SsidLength ||
> 1724                     _rtw_memcmp(competitor->network.Ssid.Ssid, pmlmepriv->assoc_ssid.Ssid, pmlmepriv->assoc_ssid.SsidLength) == false)
> 1725                         goto exit;
> 1726         }
> 1727
>
> assoc_ssid.Ssid being an array, this comparison against null probably isn't what was intended ?

I think that a non-zero SsidLength should be enough of a test, but I need to 
think about a bit more.

Thanks,

Larry


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