From 1200115af09f48fd2dc0fe1859a5d18b3db70e2c Mon Sep 17 00:00:00 2001
From: bleeqer <bleeqtheproducer@gmail.com>
Date: Tue, 30 Sep 2025 00:15:49 +0000
Subject: [PATCH] cli: check clusterManagerSetSlot return value during
 migration

---
 src/redis-cli.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/redis-cli.c b/src/redis-cli.c
index 020df8d01..e998c5271 100644
--- a/src/redis-cli.c
+++ b/src/redis-cli.c
@@ -5191,7 +5191,12 @@ static int clusterManagerMigrateKeysInSlot(clusterManagerNode *source,
                     clusterManagerLogWarn("*** Slot was not served, setting "
                                           "owner to node %s:%d.\n",
                                           target->ip, target->port);
-                    clusterManagerSetSlot(source, target, slot, "node", NULL);
+                    int setslot_ok = clusterManagerSetSlot(source, target, slot, "node", NULL);
+                    if (!setslot_ok) {
+                    clusterManagerLogErr("*** Failed to set slot owner for slot%d", slot);
+                    success = 0;
+                    goto next;
+                    }  
                 }
                 /* If the key already exists in the target node (BUSYKEY),
                  * check whether its value is the same in both nodes.