netdev - Re: [PATCH net] xfrm: Add SA to hardware at the end of xfrm_state

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Date:   Fri, 19 Jan 2018 11:05:54 +0100
From:   Steffen Klassert <steffen.klassert@...unet.com>
To:     <yossiku@...lanox.com>
CC:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S . Miller" <davem@...emloft.net>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Aviad Yehezkel <aviadye@...lnaox.com>,
        "Aviv Heller" <avivh@...lanox.com>
Subject: Re: [PATCH net] xfrm: Add SA to hardware at the end of
 xfrm_state_construct()

On Wed, Jan 17, 2018 at 03:52:41PM +0200, yossiku@...lanox.com wrote:
> From: Yossi Kuperman <yossiku@...lanox.com>
> 
> Current code configures the hardware with a new SA before the state has been
> fully initialized. During this time interval, an incoming ESP packet can cause
> a crash due to a NULL dereference. More specifically, xfrm_input() considers
> the packet as valid, and yet, anti-replay mechanism is not initialized.
> 
> Move hardware configuration to the end of xfrm_state_construct(), and mark
> the state as valid once the SA is fully initialized.
> 
> Fixes: d77e38e612a0 ("xfrm: Add an IPsec hardware offloading API")
> Signed-off-by: Aviad Yehezkel <aviadye@...lnaox.com>
> Signed-off-by: Aviv Heller <avivh@...lanox.com>
> Signed-off-by: Yossi Kuperman <yossiku@...lanox.com>

Applied, thanks Yossi!