virtio-crypto: fix memory leak in virtio_crypto_alg_skcipher_close_session()

commit b1d65f717cd6305a396a8738e022c6f7c65cfbe8 upstream.

'vc_ctrl_req' is alloced in virtio_crypto_alg_skcipher_close_session(),
and should be freed in the invalid ctrl_status->status error handling
case. Otherwise there is a memory leak.

Fixes: 0756ad15b1fe ("virtio-crypto: use private buffer for control request")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Message-Id: <20221114110740.537276-1-weiyongjun@huaweicloud.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Acked-by: zhenwei pi<pizhenwei@bytedance.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/crypto/virtio/virtio_crypto_algs.c b/drivers/crypto/virtio/virtio_crypto_algs.c
index 583c0b535d13b33a044a984e09658dcd1e3574d3..8b577e4aa39fac728f06a0cafb5a5237eab161c8 100644 (file)
--- a/drivers/crypto/virtio/virtio_crypto_algs.c
+++ b/drivers/crypto/virtio/virtio_crypto_algs.c
@@ -255,7 +255,7 @@ static int virtio_crypto_alg_skcipher_close_session(
                        vcrypto->ctrl_status.status,
                        destroy_session->session_id);
 
-               return -EINVAL;
+               err = -EINVAL;
        }
        spin_unlock(&vcrypto->ctrl_lock);