netdev - Re: [PATCH net-next 2/2] xfrm: Fix unaligned access in xfrm_notify

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Date:	Wed, 21 Oct 2015 09:11:43 -0400
From:	Sowmini Varadhan <sowmini.varadhan@...cle.com>
To:	David Miller <davem@...emloft.net>
Cc:	steffen.klassert@...unet.com, linux-crypto@...r.kernel.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	herbert@...dor.apana.org.au, dhowells@...hat.com,
	zohar@...ux.vnet.ibm.com, David.Woodhouse@...el.com
Subject: Re: [PATCH net-next 2/2] xfrm: Fix unaligned access in
 xfrm_notify_sa() for DELSA

On (10/21/15 06:22), David Miller wrote:
> memcpy() _never_ works for avoiding unaligned accessed.
> 
> I repeat, no matter what you do, no matter what kinds of casts or
> fancy typing you use, memcpy() _never_ works for this purpose.
  :
> There is one and only one portable way to access unaligned data,
> and that is with the get_unaligned() and put_unaligned() helpers.

ok. I'll fix it up to use the *_unaligned functions and resend this 
out later today.

--Sowmini

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