D20703.id58855.diff
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D20703.id58855.diff
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	Index: sys/dev/virtio/scsi/virtio_scsi.c
	===================================================================
	--- sys/dev/virtio/scsi/virtio_scsi.c
	+++ sys/dev/virtio/scsi/virtio_scsi.c
	@@ -267,7 +267,7 @@
	{
	struct vtscsi_softc *sc;
	struct virtio_scsi_config scsicfg;
	- int error;
	+ int error, rqsize;

	sc = device_get_softc(dev);
	sc->vtscsi_dev = dev;
	@@ -311,6 +311,14 @@
	goto fail;
	}

	+ rqsize = virtqueue_size(sc->vtscsi_request_vq);
	+ if (sc->vtscsi_max_nsegs > rqsize) {
	+ error = E2BIG;
	+ device_printf(dev, "max_nsegs is too big (%d > %d)\n",
	+ sc->vtscsi_max_nsegs, rqsize);
	+ goto fail;
	+ }
	+
	error = vtscsi_init_event_vq(sc);
	if (error) {
	device_printf(dev, "cannot populate the eventvq\n");