[PATCH 4.4 26/92] xfrm: fix xfrm_do_migrate() with AEAD e.g(AES-GCM)

From: Greg Kroah-Hartman
Date: Thu May 24 2018 - 07:14:30 EST


4.4-stable review patch. If anyone has any objections, please let me know.

------------------

From: Antony Antony <antony@xxxxxxxxxxx>

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@xxxxxxxxxxx>
Signed-off-by: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
Cc: Ben Hutchings <ben.hutchings@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
net/xfrm/xfrm_state.c | 1 +
1 file changed, 1 insertion(+)

--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -1159,6 +1159,7 @@ static struct xfrm_state *xfrm_state_clo

if (orig->aead) {
x->aead = xfrm_algo_aead_clone(orig->aead);
+ x->geniv = orig->geniv;
if (!x->aead)
goto error;
}