netdev - Re: [PATCH 31/31] staging: r8188eu: Fix smatch error

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Date:	Wed, 8 Jan 2014 19:18:40 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Larry Finger <Larry.Finger@...inger.net>
Cc:	Dan Carpenter <dan.carpenter@...cle.com>,
	devel@...verdev.osuosl.org, netdev@...r.kernel.org
Subject: Re: [PATCH 31/31] staging: r8188eu: Fix smatch error

On Thu, Jan 02, 2014 at 04:19:33PM -0600, Larry Finger wrote:
> On 01/02/2014 02:44 AM, Dan Carpenter wrote:
> >On Sun, Dec 22, 2013 at 05:37:02PM -0600, Larry Finger wrote:
> >>Smatch shows the following:
> >>
> >>   CHECK   drivers/staging/rtl8188eu/core/rtw_mlme_ext.c
> >>drivers/staging/rtl8188eu/core/rtw_mlme_ext.c:1401 OnAssocReq() error: buffer overflow 'pstapriv->sta_aid' 32 <= 32
> >>
> >
> >This is a false positive in Smatch.  Don't do work arounds for buggy
> >tools.
> >
> >If you have the cross function database built on the latest version of
> >Smatch then I think it understands the code correctly and doesn't print
> >a warning.
> 
> When I analyzed the loop in question, I thought it resulted in a subscript
> of [NUM_STA], but I now see that the largest one is [NUM_STA-1]. I will drop
> this patch in the next round.
> 
> Thanks for the info regarding a new version of Smatch. I'll update now.

Ok, I've applied the first 30, but dropped this patch.

thanks,

greg k-h
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