Testing creation and deletion of many vhost-interfaces.
There is a memory leak, where vui->vring_locks[q] aren't freed.

The below patch seems to fix it:

diff --git a/src/vnet/devices/virtio/vhost-user.c b/src/vnet/devices/virtio/vhost-user.c
index 3fbcee9..b427bfe 100644
— a/src/vnet/devices/virtio/vhost-user.c
+++ b/src/vnet/devices/virtio/vhost-user.c
@@ -2386,12 +2386,19 @@ VLIB_REGISTER_NODE (vhost_user_process_node,static) = {
static void
vhost_user_term_if (vhost_user_intf_t * vui)
{
+ int q;
+
// Delete configured thread pinning
vec_reset_length (vui->workers);
// disconnect interface sockets
vhost_user_if_disconnect (vui);
vhost_user_update_iface_state (vui);

+ for (q = 0; q < VHOST_VRING_MAX_N; q++)
+

{ + clib_mem_free((void *) vui->vring_locks[q]); + }

+