From 259c64ef2a6c8ad2639de703c5d89d0f7a6344fc Mon Sep 17 00:00:00 2001
From: Drew Galbraith <dgalbraith33@gmail.com>
Date: Tue, 1 Aug 2023 23:10:20 -0700
Subject: [PATCH] [zion] Check if scheduler exists in PF handler before trying
 to resolve

---
 zion/interrupt/interrupt.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/zion/interrupt/interrupt.cpp b/zion/interrupt/interrupt.cpp
index b1ac511..9271788 100644
--- a/zion/interrupt/interrupt.cpp
+++ b/zion/interrupt/interrupt.cpp
@@ -95,7 +95,8 @@ extern "C" void interrupt_page_fault(InterruptFrame* frame) {
   uint64_t err = frame->error_code;
   if ((err & 0x1) == 0) {
     // Page not present error may be resolveable.
-    if (gScheduler->CurrentProcess().vmas()->HandlePageFault(frame->cr2)) {
+    if (gScheduler &&
+        gScheduler->CurrentProcess().vmas()->HandlePageFault(frame->cr2)) {
       return;
     }
   }