From 19460e4d2fd84b7ee952526f3aa5f5157b9ddde2 Mon Sep 17 00:00:00 2001
From: caiyiming <caiyiming4@huawei.com>
Date: Thu, 12 Oct 2023 05:39:25 +0000
Subject: [PATCH] 1012

Signed-off-by: caiyiming <caiyiming4@huawei.com>
---
 libpurgeablemem/common/src/ux_page_table_c.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libpurgeablemem/common/src/ux_page_table_c.c b/libpurgeablemem/common/src/ux_page_table_c.c
index 67ad9ae..8fe95de 100644
--- a/libpurgeablemem/common/src/ux_page_table_c.c
+++ b/libpurgeablemem/common/src/ux_page_table_c.c
@@ -16,6 +16,7 @@
 #include <stddef.h> /* NULL */
 #include <sys/mman.h> /* mmap */
 #include <sched.h> /* sched_yield() */
+#include <limits.h>
 
 #include "hilog/log_c.h"
 #include "pm_util.h"
@@ -261,6 +262,9 @@ static void UxpteAdd(uxpte_t *pte, size_t incNum)
     uxpte_t old;
     do {
         old = UxpteLoad(pte);
+        if (ULONG_MAX - old < incNum) {
+            return;
+        }
         if (IsUxpteUnderReclaim(old)) {
             sched_yield();
             continue;
-- 
Gitee