diff --git a/core/src/db/wal/WalBuffer.h b/core/src/db/wal/WalBuffer.h
index ca4b7066c8..4834bce7f9 100644
--- a/core/src/db/wal/WalBuffer.h
+++ b/core/src/db/wal/WalBuffer.h
@@ -48,7 +48,7 @@ struct MXLogBufferHandler {
     uint8_t buf_idx;
 };
 
-using BufferPtr = std::shared_ptr<char>;
+using BufferPtr = std::shared_ptr<char[]>;
 
 class MXLogBuffer {
  public:
diff --git a/core/src/db/wal/WalFileHandler.cpp b/core/src/db/wal/WalFileHandler.cpp
index 3d0afdb848..c5719cc248 100644
--- a/core/src/db/wal/WalFileHandler.cpp
+++ b/core/src/db/wal/WalFileHandler.cpp
@@ -41,7 +41,8 @@ MXLogFileHandler::Load(char* buf, uint32_t data_offset) {
         if (file_size > data_offset) {
             read_size = file_size - data_offset;
             fseek(p_file_, data_offset, SEEK_SET);
-            fread(buf, 1, read_size, p_file_);
+            auto ret = fread(buf, 1, read_size, p_file_);
+            __glibcxx_assert(ret == read_size);
         }
     }
     return read_size;
@@ -56,7 +57,8 @@ MXLogFileHandler::Load(char* buf, uint32_t data_offset, uint32_t data_size) {
         }
 
         fseek(p_file_, data_offset, SEEK_SET);
-        fread(buf, 1, data_size, p_file_);
+        auto ret = fread(buf, 1, data_size, p_file_);
+        __glibcxx_assert(ret == data_size);
     }
     return true;
 }
diff --git a/core/src/index/archive/VecIndex.cpp b/core/src/index/archive/VecIndex.cpp
index 875c8f56fc..1e7a9e10a0 100644
--- a/core/src/index/archive/VecIndex.cpp
+++ b/core/src/index/archive/VecIndex.cpp
@@ -100,8 +100,7 @@ read_index(const std::string& location) {
         rp += bin_length;
         reader_ptr->seekg(rp);
 
-        auto binptr = std::make_shared<uint8_t>();
-        binptr.reset(bin);
+        std::shared_ptr<uint8_t[]> binptr(bin);
         load_data_list.Append(std::string(meta, meta_length), binptr, bin_length);
         delete[] meta;
     }
diff --git a/core/src/index/knowhere/knowhere/common/BinarySet.h b/core/src/index/knowhere/knowhere/common/BinarySet.h
index e4acb99cef..ca9df76ab6 100644
--- a/core/src/index/knowhere/knowhere/common/BinarySet.h
+++ b/core/src/index/knowhere/knowhere/common/BinarySet.h
@@ -22,7 +22,7 @@ namespace milvus {
 namespace knowhere {
 
 struct Binary {
-    std::shared_ptr<uint8_t> data;
+    std::shared_ptr<uint8_t[]> data;
     int64_t size = 0;
 };
 using BinaryPtr = std::shared_ptr<Binary>;
@@ -47,7 +47,7 @@ class BinarySet {
     }
 
     void
-    Append(const std::string& name, std::shared_ptr<uint8_t> data, int64_t size) {
+    Append(const std::string& name, std::shared_ptr<uint8_t[]> data, int64_t size) {
         auto binary = std::make_shared<Binary>();
         binary->data = data;
         binary->size = size;
diff --git a/core/src/index/knowhere/knowhere/index/vector_index/FaissBaseBinaryIndex.cpp b/core/src/index/knowhere/knowhere/index/vector_index/FaissBaseBinaryIndex.cpp
index 5915b0cd8b..568b70457f 100644
--- a/core/src/index/knowhere/knowhere/index/vector_index/FaissBaseBinaryIndex.cpp
+++ b/core/src/index/knowhere/knowhere/index/vector_index/FaissBaseBinaryIndex.cpp
@@ -25,8 +25,7 @@ FaissBaseBinaryIndex::SerializeImpl(const IndexType& type) {
 
         MemoryIOWriter writer;
         faiss::write_index_binary(index, &writer);
-        auto data = std::make_shared<uint8_t>();
-        data.reset(writer.data_);
+        std::shared_ptr<uint8_t[]> data(writer.data_);
 
         BinarySet res_set;
         res_set.Append("BinaryIVF", data, writer.rp);
diff --git a/core/src/index/knowhere/knowhere/index/vector_index/FaissBaseIndex.cpp b/core/src/index/knowhere/knowhere/index/vector_index/FaissBaseIndex.cpp
index 18bff724f0..f0a6facefc 100644
--- a/core/src/index/knowhere/knowhere/index/vector_index/FaissBaseIndex.cpp
+++ b/core/src/index/knowhere/knowhere/index/vector_index/FaissBaseIndex.cpp
@@ -28,8 +28,7 @@ FaissBaseIndex::SerializeImpl(const IndexType& type) {
 
         MemoryIOWriter writer;
         faiss::write_index(index, &writer);
-        auto data = std::make_shared<uint8_t>();
-        data.reset(writer.data_);
+        std::shared_ptr<uint8_t[]> data(writer.data_);
 
         BinarySet res_set;
         // TODO(linxj): use virtual func Name() instead of raw string.
diff --git a/core/src/index/knowhere/knowhere/index/vector_index/IndexAnnoy.cpp b/core/src/index/knowhere/knowhere/index/vector_index/IndexAnnoy.cpp
index 7f7d774829..04c8390a43 100644
--- a/core/src/index/knowhere/knowhere/index/vector_index/IndexAnnoy.cpp
+++ b/core/src/index/knowhere/knowhere/index/vector_index/IndexAnnoy.cpp
@@ -35,22 +35,19 @@ IndexAnnoy::Serialize(const Config& config) {
         KNOWHERE_THROW_MSG("index not initialize or trained");
     }
 
-    BinarySet res_set;
     auto metric_type_length = metric_type_.length();
-    uint8_t* p = new uint8_t[metric_type_length];
-    std::shared_ptr<uint8_t> metric_type(p, [](uint8_t* p) { delete[] p; });
-    memcpy(p, metric_type_.data(), metric_type_.length());
+    std::shared_ptr<uint8_t[]> metric_type(new uint8_t[metric_type_length]);
+    memcpy(metric_type.get(), metric_type_.data(), metric_type_.length());
 
-    uint8_t* p_dim = new uint8_t[sizeof(uint64_t)];
-    std::shared_ptr<uint8_t> dim_data(p_dim, [](uint8_t* p_dim) { delete[] p_dim; });
     auto dim = Dim();
-    memcpy(p_dim, &dim, sizeof(uint64_t));
+    std::shared_ptr<uint8_t[]> dim_data(new uint8_t[sizeof(uint64_t)]);
+    memcpy(dim_data.get(), &dim, sizeof(uint64_t));
 
     auto index_length = index_->get_index_length();
-    uint8_t* q = new uint8_t[index_length];
-    std::shared_ptr<uint8_t> index_data(q, [](uint8_t* q) { delete[] q; });
-    memcpy(q, index_->get_index(), (size_t)index_length);
+    std::shared_ptr<uint8_t[]> index_data(new uint8_t[index_length]);
+    memcpy(index_data.get(), index_->get_index(), (size_t)index_length);
 
+    BinarySet res_set;
     res_set.Append("annoy_metric_type", metric_type, metric_type_length);
     res_set.Append("annoy_dim", dim_data, sizeof(uint64_t));
     res_set.Append("annoy_index_data", index_data, index_length);
diff --git a/core/src/index/knowhere/knowhere/index/vector_index/IndexHNSW.cpp b/core/src/index/knowhere/knowhere/index/vector_index/IndexHNSW.cpp
index 6a1a445288..3f744cdb4a 100644
--- a/core/src/index/knowhere/knowhere/index/vector_index/IndexHNSW.cpp
+++ b/core/src/index/knowhere/knowhere/index/vector_index/IndexHNSW.cpp
@@ -45,8 +45,7 @@ IndexHNSW::Serialize(const Config& config) {
     try {
         MemoryIOWriter writer;
         index_->saveIndex(writer);
-        auto data = std::make_shared<uint8_t>();
-        data.reset(writer.data_);
+        std::shared_ptr<uint8_t[]> data(writer.data_);
 
         BinarySet res_set;
         res_set.Append("HNSW", data, writer.total);
diff --git a/core/src/index/knowhere/knowhere/index/vector_index/IndexNSG.cpp b/core/src/index/knowhere/knowhere/index/vector_index/IndexNSG.cpp
index 47b5e7b7df..f437bee3c0 100644
--- a/core/src/index/knowhere/knowhere/index/vector_index/IndexNSG.cpp
+++ b/core/src/index/knowhere/knowhere/index/vector_index/IndexNSG.cpp
@@ -44,8 +44,7 @@ NSG::Serialize(const Config& config) {
 
         MemoryIOWriter writer;
         impl::write_index(index, writer);
-        auto data = std::make_shared<uint8_t>();
-        data.reset(writer.data_);
+        std::shared_ptr<uint8_t[]> data(writer.data_);
 
         BinarySet res_set;
         res_set.Append("NSG", data, writer.total);
diff --git a/core/src/index/knowhere/knowhere/index/vector_index/IndexSPTAG.cpp b/core/src/index/knowhere/knowhere/index/vector_index/IndexSPTAG.cpp
index 51d3a1baf8..f457eb9bc1 100644
--- a/core/src/index/knowhere/knowhere/index/vector_index/IndexSPTAG.cpp
+++ b/core/src/index/knowhere/knowhere/index/vector_index/IndexSPTAG.cpp
@@ -60,19 +60,19 @@ CPUSPTAGRNG::Serialize(const Config& config) {
     snprintf(cstr, length, "%s", index_config.c_str());
 
     BinarySet binary_set;
-    auto sample = std::make_shared<uint8_t>();
+    std::shared_ptr<uint8_t[]> sample;
     sample.reset(static_cast<uint8_t*>(index_blobs[0].Data()));
-    auto tree = std::make_shared<uint8_t>();
+    std::shared_ptr<uint8_t[]> tree;
     tree.reset(static_cast<uint8_t*>(index_blobs[1].Data()));
-    auto graph = std::make_shared<uint8_t>();
+    std::shared_ptr<uint8_t[]> graph;
     graph.reset(static_cast<uint8_t*>(index_blobs[2].Data()));
-    auto deleteid = std::make_shared<uint8_t>();
+    std::shared_ptr<uint8_t[]> deleteid;
     deleteid.reset(static_cast<uint8_t*>(index_blobs[3].Data()));
-    auto metadata1 = std::make_shared<uint8_t>();
+    std::shared_ptr<uint8_t[]> metadata1;
     metadata1.reset(static_cast<uint8_t*>(index_blobs[4].Data()));
-    auto metadata2 = std::make_shared<uint8_t>();
+    std::shared_ptr<uint8_t[]> metadata2;
     metadata2.reset(static_cast<uint8_t*>(index_blobs[5].Data()));
-    auto x_cfg = std::make_shared<uint8_t>();
+    std::shared_ptr<uint8_t[]> x_cfg;
     x_cfg.reset(static_cast<uint8_t*>((void*)cstr));
 
     binary_set.Append("samples", sample, index_blobs[0].Length());
diff --git a/core/src/index/knowhere/knowhere/index/vector_index/gpu/IndexGPUIDMAP.cpp b/core/src/index/knowhere/knowhere/index/vector_index/gpu/IndexGPUIDMAP.cpp
index c976520527..c2778c28b1 100644
--- a/core/src/index/knowhere/knowhere/index/vector_index/gpu/IndexGPUIDMAP.cpp
+++ b/core/src/index/knowhere/knowhere/index/vector_index/gpu/IndexGPUIDMAP.cpp
@@ -52,8 +52,7 @@ GPUIDMAP::SerializeImpl(const IndexType& type) {
             faiss::write_index(host_index, &writer);
             delete host_index;
         }
-        auto data = std::make_shared<uint8_t>();
-        data.reset(writer.data_);
+        std::shared_ptr<uint8_t[]> data(writer.data_);
 
         BinarySet res_set;
         res_set.Append("IVF", data, writer.rp);
diff --git a/core/src/index/knowhere/knowhere/index/vector_index/gpu/IndexGPUIVF.cpp b/core/src/index/knowhere/knowhere/index/vector_index/gpu/IndexGPUIVF.cpp
index 19f8229f6c..599f602fd7 100644
--- a/core/src/index/knowhere/knowhere/index/vector_index/gpu/IndexGPUIVF.cpp
+++ b/core/src/index/knowhere/knowhere/index/vector_index/gpu/IndexGPUIVF.cpp
@@ -102,8 +102,7 @@ GPUIVF::SerializeImpl(const IndexType& type) {
             faiss::write_index(host_index, &writer);
             delete host_index;
         }
-        auto data = std::make_shared<uint8_t>();
-        data.reset(writer.data_);
+        std::shared_ptr<uint8_t[]> data(writer.data_);
 
         BinarySet res_set;
         res_set.Append("IVF", data, writer.rp);
diff --git a/core/src/index/knowhere/knowhere/index/vector_index/gpu/IndexIVFSQHybrid.cpp b/core/src/index/knowhere/knowhere/index/vector_index/gpu/IndexIVFSQHybrid.cpp
index edd6db1c6f..10db0c327f 100644
--- a/core/src/index/knowhere/knowhere/index/vector_index/gpu/IndexIVFSQHybrid.cpp
+++ b/core/src/index/knowhere/knowhere/index/vector_index/gpu/IndexIVFSQHybrid.cpp
@@ -227,8 +227,7 @@ IVFSQHybrid::SerializeImpl(const IndexType& type) {
         MemoryIOWriter writer;
         faiss::write_index(index_.get(), &writer);
 
-        auto data = std::make_shared<uint8_t>();
-        data.reset(writer.data_);
+        std::shared_ptr<uint8_t[]> data(writer.data_);
 
         BinarySet res_set;
         res_set.Append("IVF", data, writer.rp);
diff --git a/core/src/index/knowhere/knowhere/index/vector_index/helpers/FaissIO.cpp b/core/src/index/knowhere/knowhere/index/vector_index/helpers/FaissIO.cpp
index 58142508a7..645d4f9064 100644
--- a/core/src/index/knowhere/knowhere/index/vector_index/helpers/FaissIO.cpp
+++ b/core/src/index/knowhere/knowhere/index/vector_index/helpers/FaissIO.cpp
@@ -35,7 +35,7 @@ MemoryIOWriter::operator()(const void* ptr, size_t size, size_t nitems) {
         total = total_need * magic_num;
         auto new_data = new uint8_t[total];
         memcpy((void*)new_data, (void*)data_, rp);
-        delete data_;
+        delete[] data_;
         data_ = new_data;
 
         memcpy((void*)(data_ + rp), ptr, size * nitems);
diff --git a/core/src/index/unittest/test_binaryidmap.cpp b/core/src/index/unittest/test_binaryidmap.cpp
index 2188068f35..5cd35f372a 100644
--- a/core/src/index/unittest/test_binaryidmap.cpp
+++ b/core/src/index/unittest/test_binaryidmap.cpp
@@ -112,8 +112,7 @@ TEST_P(BinaryIDMAPTest, binaryidmap_serialize) {
         serialize(filename, bin, load_data);
 
         binaryset.clear();
-        auto data = std::make_shared<uint8_t>();
-        data.reset(load_data);
+        std::shared_ptr<uint8_t[]> data(load_data);
         binaryset.Append("BinaryIVF", data, bin->size);
 
         index_->Load(binaryset);
diff --git a/core/src/index/unittest/test_binaryivf.cpp b/core/src/index/unittest/test_binaryivf.cpp
index 9dc5acd115..60b7e932a3 100644
--- a/core/src/index/unittest/test_binaryivf.cpp
+++ b/core/src/index/unittest/test_binaryivf.cpp
@@ -134,8 +134,7 @@ TEST_P(BinaryIVFTest, binaryivf_serialize) {
         serialize(filename, bin, load_data);
 
         binaryset.clear();
-        auto data = std::make_shared<uint8_t>();
-        data.reset(load_data);
+        std::shared_ptr<uint8_t[]> data(load_data);
         binaryset.Append("BinaryIVF", data, bin->size);
 
         index_->Load(binaryset);
diff --git a/core/src/index/unittest/test_idmap.cpp b/core/src/index/unittest/test_idmap.cpp
index 0a13a2528c..c884b979e3 100644
--- a/core/src/index/unittest/test_idmap.cpp
+++ b/core/src/index/unittest/test_idmap.cpp
@@ -126,8 +126,7 @@ TEST_F(IDMAPTest, idmap_serialize) {
         serialize(filename, bin, load_data);
 
         binaryset.clear();
-        auto data = std::make_shared<uint8_t>();
-        data.reset(load_data);
+        std::shared_ptr<uint8_t[]> data(load_data);
         binaryset.Append("IVF", data, bin->size);
 
         index_->Load(binaryset);
diff --git a/core/src/index/unittest/test_ivf.cpp b/core/src/index/unittest/test_ivf.cpp
index f318952725..a57b66ec1b 100644
--- a/core/src/index/unittest/test_ivf.cpp
+++ b/core/src/index/unittest/test_ivf.cpp
@@ -165,8 +165,7 @@ TEST_P(IVFTest, ivf_serialize) {
         serialize(filename, bin, load_data);
 
         binaryset.clear();
-        auto data = std::make_shared<uint8_t>();
-        data.reset(load_data);
+        std::shared_ptr<uint8_t[]> data(load_data);
         binaryset.Append("IVF", data, bin->size);
 
         index_->Load(binaryset);
diff --git a/core/src/index/unittest/test_sptag.cpp b/core/src/index/unittest/test_sptag.cpp
index a7a51ef1b0..42d257e3c5 100644
--- a/core/src/index/unittest/test_sptag.cpp
+++ b/core/src/index/unittest/test_sptag.cpp
@@ -124,8 +124,7 @@ TEST_P(SPTAGTest, sptag_serialize) {
 
             auto load_data = new uint8_t[bin_size];
             reader(load_data, bin_size);
-            auto data = std::make_shared<uint8_t>();
-            data.reset(load_data);
+            std::shared_ptr<uint8_t[]> data(load_data);
             load_data_list.Append(meta_list[i].first, data, bin_size);
         }
 
diff --git a/core/unittest/db/test_wal.cpp b/core/unittest/db/test_wal.cpp
index 9d3a35e658..8746c2cbf3 100644
--- a/core/unittest/db/test_wal.cpp
+++ b/core/unittest/db/test_wal.cpp
@@ -32,11 +32,13 @@ namespace {
 
 void
 MakeEmptyTestPath() {
+    pid_t ret;
     if (access(WAL_GTEST_PATH, 0) == 0) {
-        ::system("rm -rf " WAL_GTEST_PATH "*");
+        ret = ::system("rm -rf " WAL_GTEST_PATH "*");
     } else {
-        ::system("mkdir -m 777 -p " WAL_GTEST_PATH);
+        ret = ::system("mkdir -m 777 -p " WAL_GTEST_PATH);
     }
+    __glibcxx_assert(ret != -1);
 }
 
 } // namespace