This patch looks like it should be in the 3.11-stable tree, should we apply it?
------------------ From: "Heinz Graalfs <[email protected]>" commit 2bf4fd31394a3f875ea093ee8a209f30b378cbf3 upstream If virtqueue_get_buf() returned with a NULL pointer avoid a possibly endless loop by checking for a broken virtqueue. Signed-off-by: Heinz Graalfs <[email protected]> Signed-off-by: Rusty Russell <[email protected]> Signed-off-by: Jonghwan Choi <[email protected]> --- drivers/scsi/virtio_scsi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c index 74b88ef..aa25aab 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -224,6 +224,9 @@ static void virtscsi_vq_done(struct virtio_scsi *vscsi, virtqueue_disable_cb(vq); while ((buf = virtqueue_get_buf(vq, &len)) != NULL) fn(vscsi, buf); + + if (unlikely(virtqueue_is_broken(vq))) + break; } while (!virtqueue_enable_cb(vq)); spin_unlock_irqrestore(&virtscsi_vq->vq_lock, flags); } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
