From 55f3e4afdb5c8816b46c2f0dbae51b5ef70ef77a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Kr=C3=B6ning?=
 <martin.kroening@eonerc.rwth-aachen.de>
Date: Wed, 20 Nov 2024 14:39:04 +0100
Subject: [PATCH] fix(x86_64): use unaligned write for TLS pointer

TLS alignment may be 4 and require an unaligned write.
This was found with hermit-c and cargo-careful.
---
 src/arch/x86_64/kernel/scheduler.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/arch/x86_64/kernel/scheduler.rs b/src/arch/x86_64/kernel/scheduler.rs
index 1de51e63f7..e3ff66d31a 100644
--- a/src/arch/x86_64/kernel/scheduler.rs
+++ b/src/arch/x86_64/kernel/scheduler.rs
@@ -293,7 +293,7 @@ impl TaskTLS {
 		// thread_ptr = block_ptr + tls_offset
 		let thread_ptr = block[tls_offset..].as_mut_ptr().cast::<()>();
 		unsafe {
-			thread_ptr.cast::<*mut ()>().write(thread_ptr);
+			thread_ptr.cast::<*mut ()>().write_unaligned(thread_ptr);
 		}
 
 		let this = Self {