From 0319aa315a5b489ec5e7dea8fcb7b38d42868e24 Mon Sep 17 00:00:00 2001
From: Nico Weber <thakis@chromium.org>
Date: Fri, 17 Sep 2021 10:44:28 -0400
Subject: [PATCH] Kernel: Add __stack_chk_fail to aarch64 Prekernel init

This is needed for some functions with local variables. We'll grow
such a function soon.
---
 Kernel/Prekernel/Arch/aarch64/init.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Kernel/Prekernel/Arch/aarch64/init.cpp b/Kernel/Prekernel/Arch/aarch64/init.cpp
index 5771575aa4..36acd399ad 100644
--- a/Kernel/Prekernel/Arch/aarch64/init.cpp
+++ b/Kernel/Prekernel/Arch/aarch64/init.cpp
@@ -18,3 +18,16 @@ extern "C" [[noreturn]] void init()
 // FIXME: Share this with the Intel Prekernel.
 extern size_t __stack_chk_guard;
 size_t __stack_chk_guard;
+extern "C" [[noreturn]] void __stack_chk_fail();
+
+[[noreturn]] static void halt()
+{
+    for (;;) {
+        asm volatile("wfi");
+    }
+}
+
+void __stack_chk_fail()
+{
+    halt();
+}