From 0b077a89a7b2d29b0e0eb35a3b6597ea4398ca21 Mon Sep 17 00:00:00 2001
From: Benguang Zhao <bgzhao@taosdata.com>
Date: Tue, 5 Sep 2023 18:24:48 +0800
Subject: [PATCH] fix: break potential infinite loop in tfsMkdirRecurAt

---
 source/libs/tfs/src/tfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/libs/tfs/src/tfs.c b/source/libs/tfs/src/tfs.c
index 445c24159f..f2b45c5b84 100644
--- a/source/libs/tfs/src/tfs.c
+++ b/source/libs/tfs/src/tfs.c
@@ -296,7 +296,7 @@ int32_t tfsMkdirRecurAt(STfs *pTfs, const char *rname, SDiskID diskId) {
       // https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man3/dirname.3.html
       char *dir = taosStrdup(taosDirName(s));
 
-      if (tfsMkdirRecurAt(pTfs, dir, diskId) < 0) {
+      if (strlen(dir) >= strlen(rname) || tfsMkdirRecurAt(pTfs, dir, diskId) < 0) {
         taosMemoryFree(s);
         taosMemoryFree(dir);
         return -1;