Hello,
This patch adds the MAP_FIXED_NOREPLACE flag which hasn't made its way into uclibc-ng yet.

From c72a664b4bf44bc0d069068b5eed2b62ead35b19 Mon Sep 17 00:00:00 2001
From: linted <linted@users.noreply.github.com>
Date: Sat, 21 Jan 2023 16:19:23 -0500
Subject: [PATCH 2/2] Defined MAP_FIXED_NOREPLACE

Added definition for MAP_FIXED_NOREPLACE which was added in kernel 4.17

Signed-off-by: linted <linted@users.noreply.github.com>
---
 libc/sysdeps/linux/common/bits/mman-linux.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libc/sysdeps/linux/common/bits/mman-linux.h b/libc/sysdeps/linux/common/bits/mman-linux.h
index 6ca08415a..4947ddd89 100644
--- a/libc/sysdeps/linux/common/bits/mman-linux.h
+++ b/libc/sysdeps/linux/common/bits/mman-linux.h
@@ -46,6 +46,7 @@
 
 /* Other flags.  */
 #define MAP_FIXED 0x10 /* Interpret addr exactly.  */
+# define MAP_FIXED_NOREPLACE 0x100000 /* Used to solve problem with MAP_FIXED */
 #ifdef __USE_MISC
 # define MAP_FILE 0
 # ifdef __MAP_ANONYMOUS
--
2.34.1