From: David Gibson <david@gibson.dropbear.id.au>
To: Greg KH <gregkh@suse.de>
Cc: Theodore Ts'o <tytso@mit.edu>,
Zwane Mwaikambo <zwane@arm.linux.org.uk>,
torvalds@linux-foundation.org,
Justin Forbes <jmforbes@linuxtx.org>,
linux-kernel@vger.kernel.org,
Chris Wedgwood <reviews@ml.cw.f00f.org>,
Domenico Andreoli <cavokz@gmail.com>,
linuxppc-dev list <linuxppc-dev@ozlabs.org>,
Randy Dunlap <rdunlap@xenotime.net>,
Paul Mackerras <paulus@samba.org>,
Chuck Ebbert <cebbert@redhat.com>, Dave Jones <davej@redhat.com>,
Michael Krufky <mkrufky@linuxtv.org>,
akpm@linux-foundation.org, Chuck Wolber <chuckw@quantumlinux.com>,
stable@kernel.org, alan@lxorguk.ukuu.org.uk
Subject: Re: [patch 07/12] powerpc: Fix size check for hugetlbfs
Date: Tue, 14 Aug 2007 17:56:13 +1000 [thread overview]
Message-ID: <20070814075613.GH8791@localhost.localdomain> (raw)
In-Reply-To: <20070814072918.GG15025@kroah.com>
On Tue, Aug 14, 2007 at 12:29:18AM -0700, Greg KH wrote:
> -stable review patch. If anyone has any objections, please let us know.
>
> ------------------
> From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
>
> My "slices" address space management code that was added in 2.6.22
> implementation of get_unmapped_area() doesn't properly check that the
> size is a multiple of the requested page size. This allows userland to
> create VMAs that aren't a multiple of the huge page size with hugetlbfs
> (since hugetlbfs entirely relies on get_unmapped_area() to do that
> checking) which leads to a kernel BUG() when such areas are torn down.
>
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Signed-off-by: Paul Mackerras <paulus@samba.org>
> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
prev parent reply other threads:[~2007-08-14 7:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20070814072244.882283903@mini.kroah.org>
[not found] ` <20070814072813.GA15025@kroah.com>
2007-08-14 7:29 ` [patch 07/12] powerpc: Fix size check for hugetlbfs Greg KH
2007-08-14 7:56 ` David Gibson [this message]
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