fix(query): invalid buf page

source/libs/executor/inc/executil.h

@@ -135,6 +135,9 @@ struct SResultRowEntryInfo* getResultEntryInfo(const SResultRow* pRow, int32_t i
 
 static FORCE_INLINE SResultRow* getResultRowByPos(SDiskbasedBuf* pBuf, SResultRowPosition* pos, bool forUpdate) {
   SFilePage* bufPage = (SFilePage*)getBufPage(pBuf, pos->pageId);
+  if (!bufPage) {
+    return NULL;
+  }
   if (forUpdate) {
     setBufPageDirty(bufPage, true);
   }

source/util/src/tpagedbuf.c

@@ -482,6 +482,7 @@ void* getBufPage(SDiskbasedBuf* pBuf, int32_t id) {
 
     SPageInfo** pInfo = (SPageInfo**)((*pi)->pn->data);
     if (*pInfo != *pi) {
+      terrno = TSDB_CODE_QRY_SYS_ERROR;
       uError("inconsistently data in paged buffer, pInfo:%p, pi:%p, %s", *pInfo, *pi, pBuf->id);
       return NULL;
     }