diff options
| -rw-r--r-- | xen/common/device_tree.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/xen/common/device_tree.c b/xen/common/device_tree.c index f867dfd969..9d300ecb8f 100644 --- a/xen/common/device_tree.c +++ b/xen/common/device_tree.c @@ -467,10 +467,14 @@ static void __init process_multiboot_node(const void *fdt, int node, mod = &early_info.modules.module[nr]; - prop = fdt_get_property(fdt, node, "reg", NULL); + prop = fdt_get_property(fdt, node, "reg", &len); if ( !prop ) early_panic("node %s missing `reg' property\n", name); + if ( len < dt_cells_to_size(address_cells + size_cells) ) + early_panic("fdt: node `%s': `reg` property length is too short\n", + name); + cell = (const u32 *)prop->data; device_tree_get_reg(&cell, address_cells, size_cells, &mod->start, &mod->size); |