From 5ee8e17b76c8b3c4f5041d83425b9fef400403e6 Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Tue, 20 Sep 2022 17:16:23 +0200
Subject: [PATCH] Ensure we are in an interrupt in the interrupt handler

---
 kernel/src/interrupts/Entry.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/kernel/src/interrupts/Entry.cpp b/kernel/src/interrupts/Entry.cpp
index e439287c..6f24af31 100644
--- a/kernel/src/interrupts/Entry.cpp
+++ b/kernel/src/interrupts/Entry.cpp
@@ -1,6 +1,8 @@
 #define MODULE "isr"
 
+#include "assert.h"
 #include "interrupts/IRQ.h"
+#include "interrupts/Interrupts.h"
 #include "interrupts/SavedContext.h"
 #include "log/Log.h"
 #include "panic/hang.h"
@@ -9,6 +11,7 @@
 
 extern "C" void common_handler(SavedContext* context)
 {
+    ASSERT(Interrupts::is_in_handler());
     if (context->number >= 0x20 && context->number < 0x30)
     {
         IRQ::interrupt_handler(context);
@@ -38,6 +41,10 @@ extern "C" void common_handler(SavedContext* context)
     if (context->number == 8)
     {
         kerrorln("Double fault, halting");
+        kinfoln("Stack trace:");
+
+        StackTracer tracer(context->rbp);
+        tracer.trace();
         hang();
     }
     if (context->number == 256) { kwarnln("Unused interrupt"); }