Messages in this thread | | | Date | Tue, 23 Nov 2021 12:49:21 +0000 | From | Stefan Hajnoczi <> | Subject | Re: [PATCH] vsock/virtio: suppress used length validation |
| |
On Mon, Nov 22, 2021 at 04:32:01AM -0500, Michael S. Tsirkin wrote: > It turns out that vhost vsock violates the virtio spec > by supplying the out buffer length in the used length > (should just be the in length). > As a result, attempts to validate the used length fail with: > vmw_vsock_virtio_transport virtio1: tx: used len 44 is larger than in buflen 0 > > Since vsock driver does not use the length fox tx and > validates the length before use for rx, it is safe to > suppress the validation in virtio core for this driver. > > Reported-by: Halil Pasic <pasic@linux.ibm.com> > Fixes: 939779f5152d ("virtio_ring: validate used buffer length") > Cc: "Jason Wang" <jasowang@redhat.com> > Signed-off-by: Michael S. Tsirkin <mst@redhat.com> > --- > net/vmw_vsock/virtio_transport.c | 1 + > 1 file changed, 1 insertion(+)
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> [unhandled content-type:application/pgp-signature] | |