From 278a524bbb141d2489c69a7e274348407c9cb1aa Mon Sep 17 00:00:00 2001
From: Emin Arslan <me@emin.engineer>
Date: Mon, 4 May 2026 11:28:55 +0300
Subject: [PATCH] fix: zero .bss before enabling paging to prevent triple fault

Co-authored-by: aider (openrouter/moonshotai/kimi-k2.6) <aider@aider.chat>
---
 kernel_entry.S | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/kernel_entry.S b/kernel_entry.S
index 9cd45d9..be22530 100644
--- a/kernel_entry.S
+++ b/kernel_entry.S
@@ -35,6 +35,13 @@ stack_top:
 _start:
     movl $stack_top, %esp
 
+    cld
+    movl $__bss_start, %edi
+    movl $__bss_end, %ecx
+    subl %edi, %ecx
+    xorl %eax, %eax
+    rep stosb
+
     movl $pdpt, %eax
     orl $0x03, %eax
     movl %eax, pml4