From 13cb96d1e36c9581a1f8f2601f5383756829d834 Mon Sep 17 00:00:00 2001
From: huangshuhua <huangshuhua@k.cm>
Date: Mon, 30 Jun 2025 09:58:36 +0800
Subject: [PATCH] posix/mmap: validate addr non-null before alignment check

---
 cpukit/posix/src/mmap.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cpukit/posix/src/mmap.c b/cpukit/posix/src/mmap.c
index 7e7f6f8bdd..91d7780ea8 100644
--- a/cpukit/posix/src/mmap.c
+++ b/cpukit/posix/src/mmap.c
@@ -141,11 +141,11 @@ void *mmap(
 
   /* Check for illegal addresses. Watch out for address wrap. */
   if ( map_fixed ) {
-    if ((uintptr_t)addr & PAGE_MASK) {
+    if ( addr == NULL ) {
       errno = EINVAL;
       return MAP_FAILED;
     }
-    if ( addr == NULL ) {
+    if ((uintptr_t)addr & PAGE_MASK) {
       errno = EINVAL;
       return MAP_FAILED;
     }