From 73a55007a44d23be40be681c4882fd6ad1e30b60 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Sat, 19 Jun 2021 13:12:34 +0200
Subject: Improved bus and device management

---
 libs/libgui/msg.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'libs')

diff --git a/libs/libgui/msg.c b/libs/libgui/msg.c
index a8da87c..16f72d4 100644
--- a/libs/libgui/msg.c
+++ b/libs/libgui/msg.c
@@ -35,8 +35,11 @@ res msg_send(enum message_type type, void *data, u32 size)
 
 res msg_receive(void *buf, u32 size)
 {
-	res ret = dev_read(DEV_BUS, buf, 0, size);
+	assert(size >= sizeof(struct message_header));
 	struct message_header *header = buf;
+	memset(header, 0, sizeof(*header));
+
+	res ret = dev_read(DEV_BUS, buf, 0, size);
 	if (header->magic == MSG_MAGIC)
 		return ret;
 	else
-- 
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