xfrm: fix xfrm_do_migrate() with AEAD e.g(AES-GCM)

commit 75bf50f4aaa1c78d769d854ab3d975884909e4fb upstream.

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@phenome.org>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 6f5635770d6afe2d36efd2d76f79e1ac1c780ebb..71a94e549301aebb5578ec81f4b8068ce3359ae1 100644 (file)
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -1197,6 +1197,7 @@ 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;
        }