[thin_ll_dump] Fix potential segfault while reading invalid subtree roots
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@ -135,7 +135,9 @@ namespace {
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public:
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ll_mapping_tree_emitter(block_manager::ptr bm,
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indented_stream &out)
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: bm_(bm), out_(out) {
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: bm_(bm),
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nv_(create_btree_node_validator()),
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out_(out) {
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}
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void visit(btree_path const &path, block_address tree_root) {
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@ -147,6 +149,7 @@ namespace {
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try {
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block_manager::read_ref rr = bm_->read_lock(tree_root);
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node_ref<uint64_traits> n = btree_detail::to_node<uint64_traits>(rr);
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nv_->check(n.raw(), tree_root);
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node_info ni;
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convert_to_node_info(n, ni);
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output_node_info(out_, ni);
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@ -160,6 +163,7 @@ namespace {
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}
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private:
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block_manager::ptr bm_;
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bcache::validator::ptr nv_;
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indented_stream& out_;
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};
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