From 55c5db056ece5a2f53f4e34db563d9403281387b Mon Sep 17 00:00:00 2001
From: ngiddings <nathang567@gmail.com>
Date: Sat, 17 Apr 2021 04:56:22 -0500
Subject: [PATCH] Fixed crash in initialize_context() Function tried to
 dereference a physical address, causing page fault

---
 src/x86/context.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/x86/context.c b/src/x86/context.c
index c7262d0..9be0f1a 100644
--- a/src/x86/context.c
+++ b/src/x86/context.c
@@ -4,13 +4,12 @@
 
 void *initialize_context(void *task_entry, struct page_stack_t *page_stack)
 {
-    physaddr_t stack0 = reserve_page(page_stack);
-    map_page(page_stack, (void*)0xFF7FF000, stack0, PAGE_RW);
-    map_page(page_stack, (void*)0xFF7FD000, stack0, PAGE_RW | PAGE_USERMODE);
+    map_page(page_stack, (void*)0xFF7FF000, reserve_page(page_stack), PAGE_RW);
+    map_page(page_stack, (void*)0xFF7FD000, reserve_page(page_stack), PAGE_RW | PAGE_USERMODE);
     unmap_page((void*)0xFF7FE000);
     unmap_page((void*)0xFF7FC000);
     uint32_t flags;
-    uint32_t *stack = (uint32_t*)((void*)stack0 - 20);
+    uint32_t *stack = (uint32_t*)((void*)0xFF800000 - 20);
     asm("pushf; "
         "mov (%%esp), %0; "
         "popf; "