From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Greg KH <greg@kroah.com>
Cc: linuxppc-dev list <linuxppc-dev@ozlabs.org>,
Paul Mackerras <paulus@samba.org>
Subject: Re: [PATCH] powerpc: Make alignment exception always check exception table
Date: Thu, 02 Nov 2006 07:43:15 +1100 [thread overview]
Message-ID: <1162413796.25682.414.camel@localhost.localdomain> (raw)
In-Reply-To: <20061101063401.GA25664@kroah.com>
On Tue, 2006-10-31 at 22:34 -0800, Greg KH wrote:
> On Wed, Nov 01, 2006 at 02:09:30PM +1100, Benjamin Herrenschmidt wrote:
> > The alignment exception used to only check the exception table for
> > -EFAULT, not for other errors. That opens an oops window if we can
> > coerce the kernel into getting an alignment exception for other reasons
> > in what would normally be a user-protected accessor, which can be done
> > via some of the futex ops. This fixes it by always checking the
> > exception tables.
> >
> > Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> > ---
> >
> > This is 2.6.19 material and should probably go into stable as well.
> > (Greg: take it if paulus acks it and it applies :)
>
> Please forward the final patch (which ever version it is :) to the
> stable@kernel.org address when this goes into mainline.
Ok, will do. I wan't sure what the proper procedure was.
Cheers,
Ben.
prev parent reply other threads:[~2006-11-01 20:44 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-01 3:09 [PATCH] powerpc: Make alignment exception always check exception table Benjamin Herrenschmidt
2006-11-01 3:42 ` [PATCH] powerpc: Make alignment exception always check exception table (#2) Benjamin Herrenschmidt
2006-11-01 4:11 ` [PATCH] powerpc: Make alignment exception always check exception table (#3) Benjamin Herrenschmidt
2006-11-01 6:34 ` [PATCH] powerpc: Make alignment exception always check exception table Greg KH
2006-11-01 20:43 ` Benjamin Herrenschmidt [this message]
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