From ac88a1edb7ba8e44169dd92560f928216d8d78ce Mon Sep 17 00:00:00 2001
From: Alex <enderice2@users.noreply.github.com>
Date: Mon, 6 Mar 2023 03:21:06 +0200
Subject: [PATCH] Zero tss stack tables

---
 Architecture/amd64/cpu/GlobalDescriptorTable.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Architecture/amd64/cpu/GlobalDescriptorTable.cpp b/Architecture/amd64/cpu/GlobalDescriptorTable.cpp
index 878a5c4..5afbf78 100644
--- a/Architecture/amd64/cpu/GlobalDescriptorTable.cpp
+++ b/Architecture/amd64/cpu/GlobalDescriptorTable.cpp
@@ -115,6 +115,7 @@ namespace GlobalDescriptorTable
                  : "memory", "rax");
 
         CPUStackPointer[Core] = KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE));
+        memset(CPUStackPointer[Core], 0, STACK_SIZE);
         debug("CPU %d Stack Pointer: %#lx", Core, CPUStackPointer[Core]);
 
         uint64_t Base = (uint64_t)&tss[Core];
@@ -132,6 +133,9 @@ namespace GlobalDescriptorTable
         tss[Core].InterruptStackTable[0] = (uint64_t)KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE)) + STACK_SIZE;
         tss[Core].InterruptStackTable[1] = (uint64_t)KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE)) + STACK_SIZE;
         tss[Core].InterruptStackTable[2] = (uint64_t)KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE)) + STACK_SIZE;
+        memset((void *)(tss[Core].InterruptStackTable[0] - STACK_SIZE), 0, STACK_SIZE);
+        memset((void *)(tss[Core].InterruptStackTable[1] - STACK_SIZE), 0, STACK_SIZE);
+        memset((void *)(tss[Core].InterruptStackTable[2] - STACK_SIZE), 0, STACK_SIZE);
 
         CPU::x64::ltr(GDT_TSS);
         asmv("mov %%rsp, %0"