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It is possible to construct a devicetree blob with multiple root nodes. Update fdt_check_full() to check for this, along with a root node with an invalid name. CVE-2021-27097 Signed-off-by: Simon Glass <sjg@chromium.org> Reported-by: Bruce Monroe <bruce.monroe@intel.com> Reported-by: Arie Haenel <arie.haenel@intel.com> Reported-by: Julien Lenoir <julien.lenoir@intel.com>