4.14-stable review patch. If anyone has any objections, please let me know.
------------------ From: Tiwei Bie <[email protected]> commit e82df670235138575b37ff0ec24412a471efd97f upstream. The vq->vq.num_free hasn't been changed when error happens, so it shouldn't be changed when handling the error. Fixes: 780bc7903a32 ("virtio_ring: Support DMA APIs") Cc: Andy Lutomirski <[email protected]> Cc: Michael S. Tsirkin <[email protected]> Cc: [email protected] Signed-off-by: Tiwei Bie <[email protected]> Signed-off-by: Michael S. Tsirkin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/virtio/virtio_ring.c | 2 -- 1 file changed, 2 deletions(-) --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -428,8 +428,6 @@ unmap_release: i = virtio16_to_cpu(_vq->vdev, vq->vring.desc[i].next); } - vq->vq.num_free += total_sg; - if (indirect) kfree(desc);
