diff --git a/source/libs/executor/src/executorInt.c b/source/libs/executor/src/executorInt.c
index d229f7d0ee762dbafaa8fc3f522e1c1e534ddce7..66ad3ca892a7af72f261863de7ca3f15eddd091d 100644
--- a/source/libs/executor/src/executorInt.c
+++ b/source/libs/executor/src/executorInt.c
@@ -573,8 +573,13 @@ void extractQualifiedTupleByFilterResult(SSDataBlock* pBlock, const SColumnInfoD
           if (colDataIsNull_var(pDst, j)) {
             colDataSetNull_var(pDst, numOfRows);
           } else {
+            // fix address sanitizer error. p1 may point to memory that will change during realloc of colDataSetVal, first copy it to p2
             char* p1 = colDataGetVarData(pDst, j);
-            colDataSetVal(pDst, numOfRows, p1, false);
+            int32_t len = varDataTLen(p1);
+            char* p2 = taosMemoryMalloc(len);
+            varDataCopy(p2, p1);
+            colDataSetVal(pDst, numOfRows, p2, false);
+            taosMemoryFree(p2);
           }
           numOfRows += 1;
           j += 1;
diff --git a/source/libs/scalar/src/sclvector.c b/source/libs/scalar/src/sclvector.c
index 6983f6313b07912dd24b2d76bfe64cda07ffc822..e2496e15c3d36ece2dcca9f34d58cf2736e1e9c5 100644
--- a/source/libs/scalar/src/sclvector.c
+++ b/source/libs/scalar/src/sclvector.c
@@ -1788,6 +1788,7 @@ void vectorIsNull(SScalarParam *pLeft, SScalarParam *pRight, SScalarParam *pOut,
       ++pOut->numOfQualified;
     }
     colDataSetInt8(pOut->columnData, i, &v);
+    colDataClearNull_f(pOut->columnData->nullbitmap, i);
   }
   pOut->numOfRows = pLeft->numOfRows;
 }
@@ -1799,6 +1800,7 @@ void vectorNotNull(SScalarParam *pLeft, SScalarParam *pRight, SScalarParam *pOut
       ++pOut->numOfQualified;
     }
     colDataSetInt8(pOut->columnData, i, &v);
+    colDataClearNull_f(pOut->columnData->nullbitmap, i);
   }
   pOut->numOfRows = pLeft->numOfRows;
 }