From 50839bd1f10724d2c56b540f57b71cef39ba8315 Mon Sep 17 00:00:00 2001
From: Gunnar Beutner <gbeutner@serenityos.org>
Date: Wed, 30 Jun 2021 13:08:54 +0200
Subject: [PATCH] Kernel: Properly initialize r8-r15 for new threads on x86_64

---
 Kernel/Arch/x86/x86_64/Processor.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Kernel/Arch/x86/x86_64/Processor.cpp b/Kernel/Arch/x86/x86_64/Processor.cpp
index acb409b8b8..d46f7015f5 100644
--- a/Kernel/Arch/x86/x86_64/Processor.cpp
+++ b/Kernel/Arch/x86/x86_64/Processor.cpp
@@ -109,6 +109,14 @@ FlatPtr Processor::init_context(Thread& thread, bool leave_crit)
     iretframe.rdx = regs.rdx;
     iretframe.rcx = regs.rcx;
     iretframe.rax = regs.rax;
+    iretframe.r8 = regs.r8;
+    iretframe.r9 = regs.r9;
+    iretframe.r10 = regs.r10;
+    iretframe.r11 = regs.r11;
+    iretframe.r12 = regs.r12;
+    iretframe.r13 = regs.r13;
+    iretframe.r14 = regs.r14;
+    iretframe.r15 = regs.r15;
     iretframe.rflags = regs.rflags;
     iretframe.rip = regs.rip;
     iretframe.cs = regs.cs;