On Fri, Jun 24, 2016 at 06:45:50PM -0700, Andy Lutomirski wrote: > virtio_net does DMA on the stack when it calls sg_init_one in > virtio_set_queues, virtnet_vlan_rx_add_vid, and > virtnet_vlan_rx_kill_vid. Michael, I think these are examples we > missed somehow when fixing these issues earlier on. > > virtio_console does it here: > > sg_init_one(sg, &cpkt, sizeof(cpkt)); > > This will cause problems on some architectures (Xen at the very least, > and it'll cause more subtle problems on other architectures if they > start using the DMA API), and it will blow up horribly with virtually > mapped stacks. > > Could you fix these, please? > > Thanks, > Andy
Will do, thanks for the report. -- MST
