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SubjectRe: [ 008/102] ARM: make vectors page inaccessible from userspace
On Fri, Aug 09, 2013 at 06:29:17AM +0200, Stefan Lippers-Hollmann wrote:
> On Friday 09 August 2013, Greg Kroah-Hartman wrote:
> > 3.10-stable review patch. If anyone has any objections, please let me know.
> >
> > ------------------
> >
> > From: Russell King <rmk+kernel@arm.linux.org.uk>
> >
> > commit a5463cd3435475386cbbe7b06e01292ac169d36f upstream.
> >
> > If kuser helpers are not provided by the kernel, disable user access to
> > the vectors page. With the kuser helpers gone, there is no reason for
> > this page to be visible to userspace.
> >
> > Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
> > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
>
>
> If I read Russell King's response in
>
> http://www.spinics.net/lists/stable/msg16792.html
> Message-ID: <20130804105241.GG23006@n2100.arm.linux.org.uk>
>
> correctly, this patch might not be wanted for -stable; this only
> affects queue-3.10 at the moment.

Yes, I know there's a build warning/error here, but it only affects no
mmu systems, right? I'll pick up the fix that hits Linus's tree for
this when it gets there.

thanks,

greg k-h


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