diff --git a/mindspore/ccsrc/kernel/cpu/concat_cpu_kernel.cc b/mindspore/ccsrc/kernel/cpu/concat_cpu_kernel.cc
index 4ddb855eb63e1af1541996146896b1c63f71c1e2..d8f2ef421bf2f9d0c4df25f8a85e5b068ed21d44 100644
--- a/mindspore/ccsrc/kernel/cpu/concat_cpu_kernel.cc
+++ b/mindspore/ccsrc/kernel/cpu/concat_cpu_kernel.cc
@@ -45,6 +45,7 @@ bool ConcatCPUKernel::Launch(const std::vector<kernel::AddressPtr> &inputs,
                              const std::vector<kernel::AddressPtr> & /*workspace*/,
                              const std::vector<kernel::AddressPtr> &outputs) {
   auto output_addr = reinterpret_cast<float *>(outputs[0]->addr);
+  auto buff_size = outputs[0]->size;
   size_t dim0 = output_shape_[0];
   size_t dim1 = output_shape_[1];
   size_t dim2 = output_shape_[2];
@@ -53,28 +54,28 @@ bool ConcatCPUKernel::Launch(const std::vector<kernel::AddressPtr> &inputs,
     for (size_t i = 0; i < dim0; ++i) {
       for (size_t j = 0; j < dim1; ++j) {
         for (size_t k = 0; k < dim2; ++k) {
-          CopyDataToOutput(inputs, i, j, k, &output_addr);
+          CopyDataToOutput(inputs, i, j, k, &output_addr, &buff_size);
         }
       }
     }
   } else if (axis_ == 2) {
     for (size_t i = 0; i < dim0; ++i) {
       for (size_t j = 0; j < dim1; ++j) {
-        CopyDataToOutput(inputs, i, j, 0, &output_addr);
+        CopyDataToOutput(inputs, i, j, 0, &output_addr, &buff_size);
       }
     }
   } else if (axis_ == 1) {
     for (size_t i = 0; i < dim0; ++i) {
-      CopyDataToOutput(inputs, i, 0, 0, &output_addr);
+      CopyDataToOutput(inputs, i, 0, 0, &output_addr, &buff_size);
     }
   } else if (axis_ == 0) {
-    CopyDataToOutput(inputs, 0, 0, 0, &output_addr);
+    CopyDataToOutput(inputs, 0, 0, 0, &output_addr, &buff_size);
   }
   return true;
 }
 
 void ConcatCPUKernel::CopyDataToOutput(const std::vector<kernel::AddressPtr> &inputs, size_t dim0, size_t dim1,
-                                       size_t dim2, float **output_addr) {
+                                       size_t dim2, float **output_addr, size_t *buff_size) {
   for (size_t i = 0; i < input_shape_list_.size(); ++i) {
     auto input_i_shape = input_shape_list_[i];
     auto input_i_addr = reinterpret_cast<float *>(inputs[i]->addr);
@@ -82,11 +83,12 @@ void ConcatCPUKernel::CopyDataToOutput(const std::vector<kernel::AddressPtr> &in
     size_t num = CPUKernelUtils::GetElementNumOnAxis(input_i_shape, axis_);
     num *= input_i_shape[axis_];
     auto pos = CPUKernelUtils::CalcOffset(input_i_shape, dim0, dim1, dim2, 0);
-    auto ret = memcpy_s(*output_addr, num * sizeof(float), input_i_addr + pos, num * sizeof(float));
+    auto ret = memcpy_s(*output_addr, *buff_size, input_i_addr + pos, num * sizeof(float));
     if (ret != EOK) {
       MS_LOG(EXCEPTION) << "memcpy failed.";
     }
     *output_addr += num;
+    *buff_size -= num * sizeof(float);
   }
 }
 
diff --git a/mindspore/ccsrc/kernel/cpu/concat_cpu_kernel.h b/mindspore/ccsrc/kernel/cpu/concat_cpu_kernel.h
index 2d1fe06372b98c11036925ea7e9900e89fe290cb..1d74979b5582950295c85f71cfa241202572b087 100644
--- a/mindspore/ccsrc/kernel/cpu/concat_cpu_kernel.h
+++ b/mindspore/ccsrc/kernel/cpu/concat_cpu_kernel.h
@@ -24,7 +24,7 @@ namespace mindspore {
 namespace kernel {
 class ConcatCPUKernel : public CPUKernel {
  public:
-  ConcatCPUKernel() = default;
+  ConcatCPUKernel() : axis_(0) {}
   ~ConcatCPUKernel() override = default;
 
   void InitKernel(const CNodePtr &kernel_node) override;
@@ -35,7 +35,7 @@ class ConcatCPUKernel : public CPUKernel {
  private:
   void CheckParam(const CNodePtr &kernel_node);
   void CopyDataToOutput(const std::vector<kernel::AddressPtr> &inputs, size_t dim0, size_t dim1, size_t dim2,
-                        float **output_addr);
+                        float **output_addr, size_t *buff_size);
   int axis_;
   std::vector<std::vector<size_t>> input_shape_list_;
   std::vector<size_t> output_shape_;
diff --git a/mindspore/ccsrc/kernel/cpu/gather_cpu_kernel.cc b/mindspore/ccsrc/kernel/cpu/gather_cpu_kernel.cc
index 044f276d7696b87c132a70707dea9ad7227cecf7..cb311043ac99b426d4c1aa91a3f2e726f57c51a5 100644
--- a/mindspore/ccsrc/kernel/cpu/gather_cpu_kernel.cc
+++ b/mindspore/ccsrc/kernel/cpu/gather_cpu_kernel.cc
@@ -40,7 +40,7 @@ bool GatherV2CPUKernel::Launch(const std::vector<kernel::AddressPtr> &inputs,
                                const std::vector<kernel::AddressPtr> & /*workspace*/,
                                const std::vector<kernel::AddressPtr> &outputs) {
   auto output_addr = reinterpret_cast<float *>(outputs[0]->addr);
-
+  auto buff_size = outputs[0]->size;
   size_t dim0 = input_shape_[0];
   size_t dim1 = input_shape_[1];
   size_t dim2 = input_shape_[2];
@@ -49,29 +49,29 @@ bool GatherV2CPUKernel::Launch(const std::vector<kernel::AddressPtr> &inputs,
     for (size_t i = 0; i < dim0; ++i) {
       for (size_t j = 0; j < dim1; ++j) {
         for (size_t k = 0; k < dim2; ++k) {
-          CopyDataToOutput(inputs, i, j, k, &output_addr);
+          CopyDataToOutput(inputs, i, j, k, &output_addr, &buff_size);
         }
       }
     }
   } else if (axis_ == 2) {
     for (size_t i = 0; i < dim0; ++i) {
       for (size_t j = 0; j < dim1; ++j) {
-        CopyDataToOutput(inputs, i, j, 0, &output_addr);
+        CopyDataToOutput(inputs, i, j, 0, &output_addr, &buff_size);
       }
     }
   } else if (axis_ == 1) {
     for (size_t i = 0; i < dim0; ++i) {
-      CopyDataToOutput(inputs, i, 0, 0, &output_addr);
+      CopyDataToOutput(inputs, i, 0, 0, &output_addr, &buff_size);
     }
   } else if (axis_ == 0) {
-    CopyDataToOutput(inputs, 0, 0, 0, &output_addr);
+    CopyDataToOutput(inputs, 0, 0, 0, &output_addr, &buff_size);
   }
 
   return true;
 }
 
 void GatherV2CPUKernel::CopyDataToOutput(const std::vector<kernel::AddressPtr> &inputs, size_t dim0, size_t dim1,
-                                         size_t dim2, float **output_addr) {
+                                         size_t dim2, float **output_addr, size_t *buff_size) {
   auto input_addr = reinterpret_cast<float *>(inputs[0]->addr);
   auto indices_addr = reinterpret_cast<int *>(inputs[1]->addr);
 
@@ -88,11 +88,12 @@ void GatherV2CPUKernel::CopyDataToOutput(const std::vector<kernel::AddressPtr> &
       pos = CPUKernelUtils::CalcOffset(input_shape_, index, 0, 0, 0);
     }
     size_t num = CPUKernelUtils::GetElementNumOnAxis(input_shape_, axis_);
-    auto ret = memcpy_s(*output_addr, num * sizeof(float), input_addr + pos, num * sizeof(float));
+    auto ret = memcpy_s(*output_addr, *buff_size, input_addr + pos, num * sizeof(float));
     if (ret != EOK) {
       MS_LOG(EXCEPTION) << "memcpy failed.";
     }
     *output_addr += num;
+    *buff_size -= num * sizeof(float);
   }
 }
 
diff --git a/mindspore/ccsrc/kernel/cpu/gather_cpu_kernel.h b/mindspore/ccsrc/kernel/cpu/gather_cpu_kernel.h
index 08201ff1655db931cfc34739a6898bf8538333df..2ffd7df4d4940ab7a7053c7101e919b7ecec5925 100644
--- a/mindspore/ccsrc/kernel/cpu/gather_cpu_kernel.h
+++ b/mindspore/ccsrc/kernel/cpu/gather_cpu_kernel.h
@@ -24,7 +24,7 @@ namespace mindspore {
 namespace kernel {
 class GatherV2CPUKernel : public CPUKernel {
  public:
-  GatherV2CPUKernel() = default;
+  GatherV2CPUKernel() : axis_(0) {}
   ~GatherV2CPUKernel() override = default;
 
   void InitKernel(const CNodePtr &kernel_node) override;
@@ -34,7 +34,7 @@ class GatherV2CPUKernel : public CPUKernel {
 
  private:
   void CopyDataToOutput(const std::vector<kernel::AddressPtr> &inputs, size_t dim0, size_t dim1, size_t dim2,
-                        float **output_addr);
+                        float **output_addr, size_t *buff_size);
   void CheckParam(const CNodePtr &kernel_node);
   std::vector<size_t> input_shape_;
   std::vector<size_t> indices_shape_;