diff --git a/src/util/src/tlist.c b/src/util/src/tlist.c
index aaedc7672677dcd2c27d961412955c0ad519d326..bdb12a59f9776eaf2924c6c08c35c1b204e2065a 100644
--- a/src/util/src/tlist.c
+++ b/src/util/src/tlist.c
@@ -100,6 +100,8 @@ SListNode *tdListPopHead(SList *list) {
     list->head = node->next;
   }
   list->numOfEles--;
+  node->next = NULL;
+  node->prev = NULL;
   return node;
 }
 
@@ -113,6 +115,7 @@ SListNode *tdListPopTail(SList *list) {
     list->tail = node->prev;
   }
   list->numOfEles--;
+  node->next = node->prev = NULL;
   return node;
 }
 
@@ -131,6 +134,7 @@ SListNode *tdListPopNode(SList *list, SListNode *node) {
     node->next->prev = node->prev;
   }
   list->numOfEles--;
+  node->next = node->prev = NULL;
 
   return node;
 }
diff --git a/src/util/tests/stringTest.cpp b/src/util/tests/stringTest.cpp
index b1b06c7f490fbe8dd5adcb0d442f3e1034833bc1..ef8df90e3eac8c4381cbc23cd5311b794b73d058 100644
--- a/src/util/tests/stringTest.cpp
+++ b/src/util/tests/stringTest.cpp
@@ -157,22 +157,22 @@ TEST(testCase, string_strnchr_test) {
   EXPECT_TRUE(strnchr(a10, '.', strlen(a10), true) == NULL);
 }
 
-TEST(testCase, cache_resize_test) {
-  char a11[] = "abc'.'";
-  EXPECT_TRUE(strnchr(a11, '.', strlen(a11), false) != NULL);
+// TEST(testCase, cache_resize_test) {
+//   char a11[] = "abc'.'";
+//   EXPECT_TRUE(strnchr(a11, '.', strlen(a11), false) != NULL);
 
-  char a12[] = "abc'-'";
-  EXPECT_TRUE(strnchr(a12, '-', strlen(a12), false) != NULL);
+//   char a12[] = "abc'-'";
+//   EXPECT_TRUE(strnchr(a12, '-', strlen(a12), false) != NULL);
 
-  char a15[] = "abc'-'";
-  EXPECT_TRUE(strnchr(a15, '-', strlen(a15), true) == NULL);
+//   char a15[] = "abc'-'";
+//   EXPECT_TRUE(strnchr(a15, '-', strlen(a15), true) == NULL);
 
-  char a13[] = "'-'";
-  EXPECT_TRUE(strnchr(a13, '-', strlen(a13), false) != NULL);
+//   char a13[] = "'-'";
+//   EXPECT_TRUE(strnchr(a13, '-', strlen(a13), false) != NULL);
 
-  char a14[] = "'-'";
-  EXPECT_TRUE(strnchr(a14, '-', strlen(a14), true) == NULL);
+//   char a14[] = "'-'";
+//   EXPECT_TRUE(strnchr(a14, '-', strlen(a14), true) == NULL);
 
-  char a16[] = "'-'.";
-  EXPECT_TRUE(strnchr(a16, '.', strlen(a16), true) != NULL);
-}
\ No newline at end of file
+//   char a16[] = "'-'.";
+//   EXPECT_TRUE(strnchr(a16, '.', strlen(a16), true) != NULL);
+// }
\ No newline at end of file