From ae52e0c11d744bccc70e3c641e1567ec56f1a8f7 Mon Sep 17 00:00:00 2001
From: Huang Zw <huang_zhw@126.com>
Date: Fri, 22 Jan 2021 15:37:25 +0800
Subject: [PATCH] In dbOverwrite moduleNotifyKeyUnlink should use old val
 (#8381)

The module notification was using the wrong value.
---
 src/db.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/db.c b/src/db.c
index 29fef13fb..3871753dd 100644
--- a/src/db.c
+++ b/src/db.c
@@ -226,7 +226,7 @@ void dbOverwrite(redisDb *db, robj *key, robj *val) {
     /* Although the key is not really deleted from the database, we regard 
     overwrite as two steps of unlink+add, so we still need to call the unlink 
     callback of the module. */
-    moduleNotifyKeyUnlink(key,val);
+    moduleNotifyKeyUnlink(key,old);
     dictSetVal(db->dict, de, val);
 
     if (server.lazyfree_lazy_server_del) {