From 02610f554609a21100a2e3614ba1d998ffafca69 Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Wed, 20 Sep 2023 15:47:09 +0800
Subject: [PATCH] fix(stream): avoid invalid read.

---
 source/dnode/vnode/src/tq/tq.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/source/dnode/vnode/src/tq/tq.c b/source/dnode/vnode/src/tq/tq.c
index 7b203a37b8..3941b35db7 100644
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@@ -1648,12 +1648,13 @@ int32_t tqProcessStreamCheckPointSourceReq(STQ* pTq, SRpcMsg* pMsg) {
   if (pTask->status.taskStatus == TASK_STATUS__HALT) {
     qError("s-task:%s not ready for checkpoint, since it is halt, ignore this checkpoint:%" PRId64 ", set it failure",
            pTask->id.idStr, req.checkpointId);
+    taosThreadMutexUnlock(&pTask->lock);
+
     streamMetaReleaseTask(pMeta, pTask);
 
     SRpcMsg rsp = {0};
     buildCheckpointSourceRsp(&req, &pMsg->info, &rsp, 0);
     tmsgSendRsp(&rsp);   // error occurs
-    taosThreadMutexUnlock(&pTask->lock);
     return TSDB_CODE_SUCCESS;
   }
   streamProcessCheckpointSourceReq(pTask, &req);