1d10b44546
A NULL value is not added to visitor's stack, but there is no check for that when the visitor tries to return that value, leading to QEMU crash. Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Andreas Färber <afaerber@suse.de>