From 284ef21ea000f18d1eaac374679e0d0561f7bef8 Mon Sep 17 00:00:00 2001
From: Binbin <binloveplay1314@qq.com>
Date: Sun, 14 Jan 2024 17:18:17 +0800
Subject: [PATCH] Fix fd check in memtest_test_linux_anonymous_maps (#12943)

The open function returns a fd on success or -1 on failure,
here we should check fd != -1, otherwise -1 will be judged
as success.

This closes #12938.
---
 src/debug.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/debug.c b/src/debug.c
index facbd6104..192b69d9c 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -2076,7 +2076,7 @@ int memtest_test_linux_anonymous_maps(void) {
     int regions = 0, j;
 
     int fd = openDirectLogFiledes();
-    if (!fd) return 0;
+    if (fd == -1) return 0;
 
     fp = fopen("/proc/self/maps","r");
     if (!fp) {