From 7ec758773cdd85755d91f52614f361e7e750c7e9 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Sun, 23 Feb 2020 10:46:16 +0100
Subject: Kernel: Dump all kernel regions when we hit a page fault during IRQ

This way you can try to figure out what the faulting address is.
---
 Kernel/VM/MemoryManager.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'Kernel/VM/MemoryManager.cpp')

diff --git a/Kernel/VM/MemoryManager.cpp b/Kernel/VM/MemoryManager.cpp
index d593e4a3c7..3cf7caceb9 100644
--- a/Kernel/VM/MemoryManager.cpp
+++ b/Kernel/VM/MemoryManager.cpp
@@ -298,8 +298,10 @@ PageFaultResponse MemoryManager::handle_page_fault(const PageFault& fault)
 {
     ASSERT_INTERRUPTS_DISABLED();
     ASSERT(Thread::current);
-    if (g_in_irq)
+    if (g_in_irq) {
         dbg() << "BUG! Page fault while handling IRQ! code=" << fault.code() << ", vaddr=" << fault.vaddr();
+        dump_kernel_regions();
+    }
 #ifdef PAGE_FAULT_DEBUG
     dbgprintf("MM: handle_page_fault(%w) at V%p\n", fault.code(), fault.vaddr().get());
 #endif
-- 
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