From bf82387f3bff734eda1e4ea0f306cf0b7a611776 Mon Sep 17 00:00:00 2001
From: 4lDO2 <4lDO2@protonmail.com>
Date: Mon, 18 Jul 2022 11:29:11 +0200
Subject: [PATCH] Fix KernelMapper unlocking code.

---
 src/arch/x86_64/rmm.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/arch/x86_64/rmm.rs b/src/arch/x86_64/rmm.rs
index f3ef63a..5fc741a 100644
--- a/src/arch/x86_64/rmm.rs
+++ b/src/arch/x86_64/rmm.rs
@@ -321,7 +321,7 @@ impl core::ops::Deref for KernelMapper {
 }
 impl Drop for KernelMapper {
     fn drop(&mut self) {
-        if LOCK_COUNT.fetch_sub(1, Ordering::Relaxed) == 0 {
+        if LOCK_COUNT.fetch_sub(1, Ordering::Relaxed) == 1 {
             LOCK_OWNER.store(NO_PROCESSOR, Ordering::Release);
         }
         atomic::compiler_fence(Ordering::Release);