diff --git a/paddle/phi/core/device_context.cc b/paddle/phi/core/device_context.cc
index cdbfb55703920c72192a67dd699a2da4c9bfccf8..1715c0965a799b1c1d97e4cbd0c7980456673bb5 100644
--- a/paddle/phi/core/device_context.cc
+++ b/paddle/phi/core/device_context.cc
@@ -297,6 +297,7 @@ struct DeviceContext::Impl {
 DeviceContext::DeviceContext() { impl_ = std::make_unique<Impl>(); }
 
 DeviceContext::DeviceContext(const DeviceContext& other) {
+  impl_ = std::make_unique<Impl>();
   impl_->SetHostAllocator(&other.GetHostAllocator());
   impl_->SetAllocator(&other.GetAllocator());
   impl_->SetZeroAllocator(&other.GetZeroAllocator());
diff --git a/paddle/phi/core/utils/array.h b/paddle/phi/core/utils/array.h
index b21e0bc088c49ed0392de1a0086094b68dae5f1b..44290b73737fb7ba8a6e3d19f27605d560435ea2 100644
--- a/paddle/phi/core/utils/array.h
+++ b/paddle/phi/core/utils/array.h
@@ -85,7 +85,7 @@ class Array {
     return ptr + i;
   }
 
-  T data_[N];
+  T data_[N] = {};
 };
 
 template <typename T>
diff --git a/paddle/phi/kernels/funcs/detail/gru_cpu_kernel.h b/paddle/phi/kernels/funcs/detail/gru_cpu_kernel.h
index e9ef8e31e445a42f9351910ffca07b9065e2c971..e6d587a61e11a773f6a74f5bf1b2e82b772a693b 100644
--- a/paddle/phi/kernels/funcs/detail/gru_cpu_kernel.h
+++ b/paddle/phi/kernels/funcs/detail/gru_cpu_kernel.h
@@ -130,7 +130,7 @@ void hl_avx_gru_forward_reset_output(OpResetOutput op_reset_output,
 #ifdef __AVX__
   __m256 r_value_update_gate, r_value_update_gate_last = _mm256_set1_ps(0.0f);
   __m256 r_value_reset_gate, r_value_reset_gate_last = _mm256_set1_ps(0.0f);
-  __m256 r_value_reset_output;
+  __m256 r_value_reset_output = _mm256_setzero_ps();
   __m256 r_prev_out = _mm256_set1_ps(0.0f),
          r_prev_out_last = _mm256_set1_ps(0.0f);
   __m256 r_reset_bias = _mm256_set1_ps(0.0f);
diff --git a/paddle/phi/kernels/funcs/jit/more/intrinsic/layer_norm.cc b/paddle/phi/kernels/funcs/jit/more/intrinsic/layer_norm.cc
index 54167261d1f31f93f71fa26f40c6814f9db85da1..04f2cdf2697fbac02633c0aec586774957ade84b 100644
--- a/paddle/phi/kernels/funcs/jit/more/intrinsic/layer_norm.cc
+++ b/paddle/phi/kernels/funcs/jit/more/intrinsic/layer_norm.cc
@@ -43,7 +43,7 @@ void LayerNorm(float* x,
     __m256 sum;
     __m256 mean_vec, var_vec;
     __m128 hi, lo;
-    __m256 tmp;
+    __m256 tmp = _mm256_setzero_ps();
     size_t offset;
     size_t j;
     __m256 reverse_num_vec =