netdev - [PATCH] xfrm: fix xfrm_do_migrate() with AEAD e.g(AES-GCM)

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Message-Id: <20171207205427.53236-1-antony@phenome.org>
Date:   Thu,  7 Dec 2017 21:54:27 +0100
From:   Antony Antony <antony@...nome.org>
To:     Steffen Klassert <steffen.klassert@...unet.com>,
        Herbert Xu <herbert@...dor.apana.org.au>
Cc:     netdev@...r.kernel.org, "David S . Miller" <davem@...emloft.net>,
        Antony Antony <antony@...nome.org>
Subject: [PATCH] xfrm: fix xfrm_do_migrate() with AEAD e.g(AES-GCM)

copy geniv when cloning the xfrm state.

x->geniv was not copied to the new state and migration would fail.

xfrm_do_migrate
  ..
  xfrm_state_clone()
   ..
   ..
   esp_init_aead()
   crypto_alloc_aead()
    crypto_alloc_tfm()
     crypto_find_alg() return EAGAIN and failed

Signed-off-by: Antony Antony <antony@...nome.org>
---
 net/xfrm/xfrm_state.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 065d89606888..500b3391f474 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -1343,6 +1343,7 @@ static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig,
 
 	if (orig->aead) {
 		x->aead = xfrm_algo_aead_clone(orig->aead);
+		x->geniv = orig->geniv;
 		if (!x->aead)
 			goto error;
 	}
-- 
2.13.6