linux-kernel - Re: [patch 2/2] misc: mic/scif: fix wrap around tests

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Message-ID: <20151014180541.GO7289@mwanda>
Date:	Wed, 14 Oct 2015 21:05:41 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Sudeep Dutt <sudeep.dutt@...el.com>
Cc:	Nikhil Rao <nikhil.rao@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [patch 2/2] misc: mic/scif: fix wrap around tests

On Tue, Oct 13, 2015 at 08:21:24PM -0700, Sudeep Dutt wrote:

> > @@ -1613,7 +1613,7 @@ off_t scif_register(scif_epd_t epd, void *addr, size_t len, off_t offset,
> >  	if ((map_flags & SCIF_MAP_FIXED) &&
> >  	    ((ALIGN(offset, PAGE_SIZE) != offset) ||
> >  	    (offset < 0) ||
> > -	    (offset + (off_t)len < offset)))
> > +	    (len < LONG_MAX - offset)))
> 
> Hi Dan,
> Should this be > instead of < like the others?

Gar.  You're right, obviously.  Thanks.  I will resend tomorrow.

regards,
dan carpenter

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