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From: Greg KH <greg@kroah.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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: Tue, 31 Oct 2006 22:34:01 -0800	[thread overview]
Message-ID: <20061101063401.GA25664@kroah.com> (raw)
In-Reply-To: <1162350571.25682.389.camel@localhost.localdomain>

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.

thanks,

greg k-h

  parent reply	other threads:[~2006-11-01  7:03 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 ` Greg KH [this message]
2006-11-01 20:43   ` [PATCH] powerpc: Make alignment exception always check exception table Benjamin Herrenschmidt

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