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Date:      Fri, 20 May 2016 18:53:06 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 209661] amd64_set_ioperm overflow
Message-ID:  <bug-209661-8-hPKtCgqUqW@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-209661-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-209661-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D209661

Konstantin Belousov <kib@FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |kib@FreeBSD.org

--- Comment #3 from Konstantin Belousov <kib@FreeBSD.org> ---
(In reply to CTurt from comment #2)
Suppose that uap->start is > 0x80000000, and uap->length is large enough so
that the sum appears under the 3 pages * 8.  Then negative i falls under the
loop condition and causes wrong accesses.

WRT return of success in this case, right, thank you for noting, I will fix=
 it
as well.

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