Re: [PATCH] virtio-rng: block max-bytes=0

["Michael S. Tsirkin" <mst@redhat.com>]

On Tue, Jul 30, 2024 at 11:07:11AM +0200, Laurent Vivier wrote:
> On 24/07/2024 12:51, Michael S. Tsirkin wrote:
> > with max-bytes set to 0, quota is 0 and so device does not work.
> > block this to avoid user confusion
> > 
> > Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> > ---
> >   hw/virtio/virtio-rng.c | 5 +++--
> >   1 file changed, 3 insertions(+), 2 deletions(-)
> > 
> > diff --git a/hw/virtio/virtio-rng.c b/hw/virtio/virtio-rng.c
> > index f74efffef7..7cf31da071 100644
> > --- a/hw/virtio/virtio-rng.c
> > +++ b/hw/virtio/virtio-rng.c
> > @@ -184,8 +184,9 @@ static void virtio_rng_device_realize(DeviceState *dev, Error **errp)
> >       /* Workaround: Property parsing does not enforce unsigned integers,
> >        * So this is a hack to reject such numbers. */
> > -    if (vrng->conf.max_bytes > INT64_MAX) {
> > -        error_setg(errp, "'max-bytes' parameter must be non-negative, "
> > +    if (vrng->conf.max_bytes == 0 ||
> > +        vrng->conf.max_bytes > INT64_MAX) {
> > +        error_setg(errp, "'max-bytes' parameter must be positive, "
> >                      "and less than 2^63");
> >           return;
> >       }
> 
> Michael, do you plan to send the PR yourself? Or perhaps it can go via trivial?
> 
> Thanks,
> Laurent

I will pick it up, I do not think this is appropriate for trivial though.

-- 
MST