diff --git a/sys/amd64/vmm/vmm_dev.c b/sys/amd64/vmm/vmm_dev.c
--- a/sys/amd64/vmm/vmm_dev.c
+++ b/sys/amd64/vmm/vmm_dev.c
@@ -1225,7 +1225,12 @@
 	struct cdev *cdev;
 	int error;
 
-	error = make_dev_p(MAKEDEV_CHECKNAME, &cdev, &devmemsw, NULL,
+	mtx_lock(&vmmdev_mtx);
+	sc = vmmdev_lookup(vmname);
+	KASSERT(sc != NULL, ("%s: vm %s softc not found", __func__, vmname));
+	mtx_unlock(&vmmdev_mtx);
+
+	error = make_dev_p(MAKEDEV_CHECKNAME, &cdev, &devmemsw, sc->ucred,
 	    UID_ROOT, GID_WHEEL, 0600, "vmm.io/%s.%s", vmname, devname);
 	if (error)
 		return (error);