From f1e3d79518da12de460d3443cf0e9d4327e5fc41 Mon Sep 17 00:00:00 2001
From: wanghuancoder <wanghuan29@baidu.com>
Date: Wed, 3 Aug 2022 11:09:09 +0800
Subject: [PATCH] fix pylayer forward memleak (#44826)

---
 paddle/fluid/eager/pylayer/py_layer_node.h | 1 +
 paddle/fluid/pybind/eager_py_layer.cc      | 1 +
 2 files changed, 2 insertions(+)

diff --git a/paddle/fluid/eager/pylayer/py_layer_node.h b/paddle/fluid/eager/pylayer/py_layer_node.h
index 57ee7016d85..f1166c362e1 100644
--- a/paddle/fluid/eager/pylayer/py_layer_node.h
+++ b/paddle/fluid/eager/pylayer/py_layer_node.h
@@ -31,6 +31,7 @@ class GradNodePyLayer : public GradNodeBase {
                   size_t bwd_out_slot_num)
       : GradNodeBase(bwd_in_slot_num, bwd_out_slot_num) {
     ctx_ = ctx;
+    Py_INCREF(ctx_);
   }
 
   ~GradNodePyLayer() override { Py_XDECREF(ctx_); };
diff --git a/paddle/fluid/pybind/eager_py_layer.cc b/paddle/fluid/pybind/eager_py_layer.cc
index 25eb696085c..970530353c7 100644
--- a/paddle/fluid/pybind/eager_py_layer.cc
+++ b/paddle/fluid/pybind/eager_py_layer.cc
@@ -383,6 +383,7 @@ PyObject* pylayer_method_apply(PyObject* cls,
   Py_XDECREF(kwargs_value_list);
   Py_XDECREF(backward_function);
   Py_XDECREF(forward_fn);
+  Py_XDECREF(ctx);
 
   return outputs;
   EAGER_CATCH_AND_THROW_RETURN_NULL
-- 
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