From 5b5dca8137bab1fd863b5e7d877e2f156ce8f8f7 Mon Sep 17 00:00:00 2001
From: Matheus <matheusuky@gmail.com>
Date: Tue, 12 Aug 2025 23:43:06 -0300
Subject: [PATCH] arp: fix race between init and incoming packets

---
 kernel-src/io/net/arp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kernel-src/io/net/arp.c b/kernel-src/io/net/arp.c
index ae3f6318..3cffb0ca 100644
--- a/kernel-src/io/net/arp.c
+++ b/kernel-src/io/net/arp.c
@@ -179,6 +179,10 @@ static void handlerthreadfn() {
 
 // executed in dpc context
 void arp_process(netdev_t *netdev, void *buffer) {
+	// not initialized yet
+	if (handlerthread == NULL)
+		return;
+
 	arpframe_t *frame = buffer;
 	if (frame->hwtype != cpu_to_be_w(1)) // ethernet
 		return;