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While accessing PCI configuration bytes, assert that 'address + len' is within PCI configuration space. Generally it is within bounds. This is more of a defensive assert, in case a buggy device was to send 'address' which may go out of bounds. Suggested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> Message-Id: <20200604113525.58898-1-ppandit@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>