diff --git a/lib/vhost/rte_vhost/vhost_user.c b/lib/vhost/rte_vhost/vhost_user.c
index 47bfe494b..1f293198c 100644
--- a/lib/vhost/rte_vhost/vhost_user.c
+++ b/lib/vhost/rte_vhost/vhost_user.c
@@ -885,7 +885,7 @@ vhost_user_set_log_base(struct virtio_net *dev, struct VhostUserMsg *msg)
 	 * mmap from 0 to workaround a hugepage mmap bug: mmap will
 	 * fail when offset is not page size aligned.
 	 */
-	addr = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+	addr = mmap(0, size + off, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 	close(fd);
 	if (addr == MAP_FAILED) {
 		RTE_LOG(ERR, VHOST_CONFIG, "mmap log base failed!\n");