From 2589cf9c78bbd308b6f300277500c920152ee6f2 Mon Sep 17 00:00:00 2001
From: Japin Li <japinli@hotmail.com>
Date: Tue, 2 Feb 2021 17:27:21 +0800
Subject: [PATCH v1] Fix memory leak in auto_explain

---
 contrib/auto_explain/auto_explain.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/contrib/auto_explain/auto_explain.c b/contrib/auto_explain/auto_explain.c
index faa6231d87..033540a3f4 100644
--- a/contrib/auto_explain/auto_explain.c
+++ b/contrib/auto_explain/auto_explain.c
@@ -383,6 +383,7 @@ explain_ExecutorEnd(QueryDesc *queryDesc)
 		msec = queryDesc->totaltime->total * 1000.0;
 		if (msec >= auto_explain_log_min_duration)
 		{
+			MemoryContext oldctx = MemoryContextSwitchTo(queryDesc->estate->es_query_cxt);
 			ExplainState *es = NewExplainState();
 
 			es->analyze = (queryDesc->instrument_options && auto_explain_log_analyze);
@@ -426,6 +427,7 @@ explain_ExecutorEnd(QueryDesc *queryDesc)
 					 errhidestmt(true)));
 
 			pfree(es->str->data);
+			MemoryContextSwitchTo(oldctx);
 		}
 	}
 
-- 
2.30.0