From ce640bea7378bb141b355e23e441e312dc984362 Mon Sep 17 00:00:00 2001
From: vasilito <adminpupkin@gmail.com>
Date: Fri, 10 Jul 2026 23:00:45 +0300
Subject: [PATCH] kernel: fix usermode_bootstrap stack mmap error handling
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The .map_err().?() pattern doesn't work in a function returning (),
because ? requires the enclosing function to return Result. Replace
with plain .expect() (these are bootstrap initialization failures —
if mmap fails here, the kernel cannot continue).
---
 src/syscall/process.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/syscall/process.rs b/src/syscall/process.rs
index 2b310a0d3a..76b5bbbb1f 100644
--- a/src/syscall/process.rs
+++ b/src/syscall/process.rs
@@ -334,8 +334,7 @@ pub unsafe fn usermode_bootstrap(bootstrap: &Bootstrap, token: &mut CleanLockTok
                             flusher,
                         )?)
                     },
-                )
-                .map_err(|e| format!("failed to mmap bootstrap stack: {e:?}"))?;
+                );
         };
         debug!(
             "Bootstrap stack mapped at {:#x}..{:#x} ({} pages)",