From e65be1be0d3e627149873033aa69609488ea089a Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Sat, 13 Jun 2020 12:56:48 +0800
Subject: [PATCH] [td-225] fix bugs in restore from core dump

---
 src/mnode/src/mnodeDb.c    |  9 ++++++---
 src/mnode/src/mnodeTable.c | 10 ++++++----
 2 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/src/mnode/src/mnodeDb.c b/src/mnode/src/mnodeDb.c
index 3666d61adc..69783defc7 100644
--- a/src/mnode/src/mnodeDb.c
+++ b/src/mnode/src/mnodeDb.c
@@ -84,9 +84,12 @@ static int32_t mnodeDbActionDelete(SSdbOper *pOper) {
   mnodeDropAllChildTables(pDb);
   mnodeDropAllSuperTables(pDb);
   mnodeDropAllDbVgroups(pDb);
-  mnodeDropDbFromAcct(pAcct, pDb);
-  mnodeDecAcctRef(pAcct);
-  
+
+  if (pAcct) {
+    mnodeDropDbFromAcct(pAcct, pDb);
+    mnodeDecAcctRef(pAcct);
+  }
+
   return TSDB_CODE_SUCCESS;
 }
 
diff --git a/src/mnode/src/mnodeTable.c b/src/mnode/src/mnodeTable.c
index 478e7790fb..0ff198bf8f 100644
--- a/src/mnode/src/mnodeTable.c
+++ b/src/mnode/src/mnodeTable.c
@@ -157,10 +157,12 @@ static int32_t mnodeChildTableActionDelete(SSdbOper *pOper) {
   if (pDb != NULL) pAcct = mnodeGetAcct(pDb->acct);
 
   if (pTable->info.type == TSDB_CHILD_TABLE) {
-    grantRestore(TSDB_GRANT_TIMESERIES, pTable->superTable->numOfColumns - 1);
-    if (pAcct != NULL) pAcct->acctInfo.numOfTimeSeries -= (pTable->superTable->numOfColumns - 1);
-    mnodeRemoveTableFromStable(pTable->superTable, pTable);
-    mnodeDecTableRef(pTable->superTable);
+    if (pTable->superTable) {
+      grantRestore(TSDB_GRANT_TIMESERIES, pTable->superTable->numOfColumns - 1);
+      if (pAcct != NULL) pAcct->acctInfo.numOfTimeSeries -= (pTable->superTable->numOfColumns - 1);
+      mnodeRemoveTableFromStable(pTable->superTable, pTable);
+      mnodeDecTableRef(pTable->superTable);
+    }
   } else {
     grantRestore(TSDB_GRANT_TIMESERIES, pTable->numOfColumns - 1);
     if (pAcct != NULL) pAcct->acctInfo.numOfTimeSeries -= (pTable->numOfColumns - 1);
-- 
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