On Wed, Aug 02, 2017 at 12:32:59PM +0200, Laurent Vivier wrote:
> With pseries machine type a negative core-id is not managed properly:
> -1 gives an inaccurate error message ("core -1 already populated"),
> -2 crashes QEMU (core dump)
>
> As it seems a negative value is invalid for any architecture,
> instead of checking this in spapr_core_pre_plug() I think it's better
> to check this in the generic part, core_prop_set_core_id()
>
> Signed-off-by: Laurent Vivier <[email protected]>Reviewed-by: David Gibson <[email protected]> > --- > hw/cpu/core.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/hw/cpu/core.c b/hw/cpu/core.c > index 2bf960d..bd578ab 100644 > --- a/hw/cpu/core.c > +++ b/hw/cpu/core.c > @@ -33,6 +33,11 @@ static void core_prop_set_core_id(Object *obj, Visitor *v, > const char *name, > return; > } > > + if (value < 0) { > + error_setg(errp, "Invalid core id %"PRId64, value); > + return; > + } > + > core->core_id = value; > } > -- David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/~dgibson
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