From 4d3050eaabfaccbade5ab036e0d46cd42bb8b156 Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Fri, 24 Mar 2023 20:59:07 +0100
Subject: [PATCH] kernel: Retrieve all thread information before marking it as
 dead in waitpid()

In case we get interrupted by the reaper thread.
---
 kernel/src/sys/waitpid.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/src/sys/waitpid.cpp b/kernel/src/sys/waitpid.cpp
index 7d366c24..698cfc6f 100644
--- a/kernel/src/sys/waitpid.cpp
+++ b/kernel/src/sys/waitpid.cpp
@@ -43,11 +43,12 @@ Result<u64> sys_waitpid(Registers*, SyscallArgs args)
         return err(ENOTSUP);
 
     int status = (int)thread->status;
+    u64 id = thread->id;
 
     thread->state = ThreadState::Dying;
 
     if (status_ptr)
         if (!MemoryManager::copy_to_user_typed(status_ptr, &status)) return err(EFAULT);
 
-    return thread->id;
+    return id;
 }