From 7d6c2a0dd1c61a13c9536a2b69efc9346cc4e293 Mon Sep 17 00:00:00 2001
From: Morten Delenk <morten@dark32.cf>
Date: Mon, 24 Jul 2017 12:36:45 +0100
Subject: [PATCH] fixed a bug where uninitialized memory was used

---
 kernel/arch/x86_64/interrupt.cpp | 5 ++++-
 kernel/src/pmm.cpp               | 2 +-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/kernel/arch/x86_64/interrupt.cpp b/kernel/arch/x86_64/interrupt.cpp
index d912a9d..db4eda0 100644
--- a/kernel/arch/x86_64/interrupt.cpp
+++ b/kernel/arch/x86_64/interrupt.cpp
@@ -26,14 +26,17 @@ extern "C" cpu_state *handleINT(cpu_state *state) {
     *out << "Interrupt ";
     out->puti(state->intr);
     *out << " occurred!\n";
+    cpu_state *new_cpu=state;
     if (state->intr < 32) {
         out->setColor(Color::RED);
         print_regdump(state);
         *out << "KERNEL PANIC: Unhandled CPU exception\n";
         for (;;)
             ;
+    } else if(state->intr < 48) {
+        new_cpu=(cpu_state*)irqs->handleIRQ(new_cpu);
     }
-    return state;
+    return new_cpu;
 }
 extern "C" void panic2(cpu_state *state) {
     state->rsp = (uintptr_t)state;
diff --git a/kernel/src/pmm.cpp b/kernel/src/pmm.cpp
index 5885e73..474428c 100644
--- a/kernel/src/pmm.cpp
+++ b/kernel/src/pmm.cpp
@@ -11,7 +11,7 @@ auto PMM::isFree(phys_t addr) -> bool {
         return false;
     return true;
 }
-PMM::PMM(phys_t page_size): page_size(page_size), head(nullptr) {}
+PMM::PMM(phys_t page_size): page_size(page_size), head(nullptr), lowest_page(~0), highest_page(0) {}
 void PMM::fill() {
     for(phys_t i=lowest_page; i<highest_page+1; i+=page_size) {
         if(isFree(i))