vhost-vsock: fix orphan connection reset

local_addr.svm_cid is host cid. We should check guest cid instead,
which is remote_addr.svm_cid. Otherwise we end up resetting all
connections to all guests.

Cc: stable@vger.kernel.org [4.8+]
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c
index e3b30ea..a504e2e 100644 (file)
--- a/drivers/vhost/vsock.c
+++ b/drivers/vhost/vsock.c
@@ -506,7 +506,7 @@ static void vhost_vsock_reset_orphans(struct sock *sk)
         * executing.
         */
 
-       if (!vhost_vsock_get(vsk->local_addr.svm_cid)) {
+       if (!vhost_vsock_get(vsk->remote_addr.svm_cid)) {
                sock_set_flag(sk, SOCK_DONE);
                vsk->peer_shutdown = SHUTDOWN_MASK;
                sk->sk_state = SS_UNCONNECTED;