From 14ac77131b8474bd8004dda2821989a490b747da Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Mon, 29 Apr 2019 15:56:25 +0200
Subject: [PATCH] Kernel: The exit_thread() syscall should unlock the big lock.

Since exit_thread() never returns, it can't rely on the syscall trap handler
to unlock the big lock before returning.
---
 Kernel/Process.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index b18ea40ebd..21b1846929 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -2445,12 +2445,13 @@ int Process::sys$create_thread(int(*entry)(void*), void* argument)
 
 void Process::sys$exit_thread(int code)
 {
-    InterruptDisabler disabler;
+    cli();
     if (&current->process().main_thread() == current) {
         sys$exit(code);
         return;
     }
     current->set_state(Thread::State::Dying);
+    big_lock().unlock_if_locked();
     Scheduler::pick_next_and_switch_now();
     ASSERT_NOT_REACHED();
 }