From b63dea5ca946c3956637a7bf85a1002866b20cd6 Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Sun, 1 Oct 2023 17:35:01 +0200
Subject: copyinmsg: Check that we have not overflown

This if of course too late in case of a failure, but better assert than get
awful bugs, and it's really not supposed to happen.
---
 ipc/mach_msg.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'ipc/mach_msg.c')

diff --git a/ipc/mach_msg.c b/ipc/mach_msg.c
index fb6e6dfc..118ce4b3 100644
--- a/ipc/mach_msg.c
+++ b/ipc/mach_msg.c
@@ -460,7 +460,7 @@ mach_msg_trap(
 			goto slow_get;
 
 		if (copyinmsg(msg, &kmsg->ikm_header,
-			      send_size)) {
+			      send_size, kmsg->ikm_size)) {
 			ikm_free(kmsg);
 			goto slow_get;
 		}
-- 
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