From 09f52fd1630d8e8534c9a7e46e9de823d074df2d Mon Sep 17 00:00:00 2001
From: Anhad Singh <andypython@protonmail.com>
Date: Fri, 20 Feb 2026 12:00:29 +1100
Subject: [PATCH] fix(redox-rt): FIXED_NOREPLACE for ET_EXEC

Signed-off-by: Anhad Singh <andypython@protonmail.com>
---
 redox-rt/src/proc.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/redox-rt/src/proc.rs b/redox-rt/src/proc.rs
index 05852690a1..bda825a893 100644
--- a/redox-rt/src/proc.rs
+++ b/redox-rt/src/proc.rs
@@ -143,6 +143,13 @@ pub fn fexec_impl(
         update_min_mmap_addr(addr, span_size);
         addr
     } else {
+        mmap_anon_remote(
+            &grants_fd,
+            0,
+            span.start,
+            span_size,
+            MapFlags::MAP_FIXED_NOREPLACE,
+        )?;
         update_min_mmap_addr(span.start, span_size);
         0
     };