Bug#660804: [PATCH V2] ipsec: be careful of non existing mac headers

[David Miller <davem@davemloft.net>]

From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Thu, 23 Feb 2012 21:55:02 +0100

> Niccolo Belli reported ipsec crashes in case we handle a frame without
> mac header (atm in his case)
> 
> Before copying mac header, better make sure it is present.
> 
> Bugzilla reference:  https://bugzilla.kernel.org/show_bug.cgi?id=42809
> 
> Reported-by: Niccolò Belli <darkbasic@linuxsystems.it>
> Tested-by: Niccolò Belli <darkbasic@linuxsystems.it>
> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>

Applied and queued up for -stable, thanks.

BTW, if anyone wants to see what's queued up for -stable I have a public
patchwork bundle for it:

	http://patchwork.ozlabs.org/bundle/davem/stable/

Just FYI.