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

commit 75bf50f 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 <[email protected]>
Signed-off-by: Steffen Klassert <[email protected]>
Cc: Ben Hutchings <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: antonyantony

net/xfrm/xfrm_state.c

@@ -1159,6 +1159,7 @@ 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;
 	}