diff --git a/connection_impl.go b/connection_impl.go
index 2fd7a4ae..5236977b 100644
--- a/connection_impl.go
+++ b/connection_impl.go
@@ -354,9 +354,9 @@ func (c *connection) initFinalizer() {
 		c.stop(flushing)
 		// stop the finalizing state to prevent conn.fill function to be performed
 		c.stop(finalizing)
+		freeop(c.operator)
 		c.netFD.Close()
 		c.closeBuffer()
-		freeop(c.operator)
 		return nil
 	})
 }
diff --git a/nocopy_linkbuffer.go b/nocopy_linkbuffer.go
index d091099f..83b0e6c3 100644
--- a/nocopy_linkbuffer.go
+++ b/nocopy_linkbuffer.go
@@ -668,6 +668,8 @@ func (b *LinkBuffer) recalLen(delta int) (length int) {
 // Nodes with size <= 0 are marked as readonly, which means the node.buf is not allocated by this mcache.
 func newLinkBufferNode(size int) *linkBufferNode {
 	var node = linkedPool.Get().(*linkBufferNode)
+	// reset node offset
+	node.off, node.malloc, node.refer, node.readonly = 0, 0, 1, false
 	if size <= 0 {
 		node.readonly = true
 		return node
@@ -754,14 +756,11 @@ func (node *linkBufferNode) Release() (err error) {
 	}
 	// release self
 	if atomic.AddInt32(&node.refer, -1) == 0 {
-		node.off, node.malloc, node.refer, node.origin, node.next = 0, 0, 1, nil, nil
 		// readonly nodes cannot recycle node.buf, other node.buf are recycled to mcache.
-		if node.readonly {
-			node.readonly = false
-		} else {
+		if !node.readonly {
 			free(node.buf)
 		}
-		node.buf = nil
+		node.buf, node.origin, node.next = nil, nil, nil
 		linkedPool.Put(node)
 	}
 	return nil
diff --git a/nocopy_linkbuffer_race.go b/nocopy_linkbuffer_race.go
index bd42dc23..b80c6be9 100644
--- a/nocopy_linkbuffer_race.go
+++ b/nocopy_linkbuffer_race.go
@@ -717,6 +717,8 @@ func (b *LinkBuffer) recalLen(delta int) (length int) {
 // Nodes with size <= 0 are marked as readonly, which means the node.buf is not allocated by this mcache.
 func newLinkBufferNode(size int) *linkBufferNode {
 	var node = linkedPool.Get().(*linkBufferNode)
+	// reset node offset
+	node.off, node.malloc, node.refer, node.readonly = 0, 0, 1, false
 	if size <= 0 {
 		node.readonly = true
 		return node
@@ -803,14 +805,11 @@ func (node *linkBufferNode) Release() (err error) {
 	}
 	// release self
 	if atomic.AddInt32(&node.refer, -1) == 0 {
-		node.off, node.malloc, node.refer, node.origin, node.next = 0, 0, 1, nil, nil
 		// readonly nodes cannot recycle node.buf, other node.buf are recycled to mcache.
-		if node.readonly {
-			node.readonly = false
-		} else {
+		if !node.readonly {
 			free(node.buf)
 		}
-		node.buf = nil
+		node.buf, node.origin, node.next = nil, nil, nil
 		linkedPool.Put(node)
 	}
 	return nil
diff --git a/nocopy_linkbuffer_test.go b/nocopy_linkbuffer_test.go
index 8c79e70b..9af49fb6 100644
--- a/nocopy_linkbuffer_test.go
+++ b/nocopy_linkbuffer_test.go
@@ -316,7 +316,6 @@ func TestLinkBufferRefer(t *testing.T) {
 	MustNil(t, err)
 	MustTrue(t, rbuf.head != node1)
 	MustTrue(t, buf.head == node2)
-	Equal(t, node1.Len(), 0)
 
 	err = buf.Release()
 	MustNil(t, err)