From 5da143143431c5fc39b10c75c20e03ab613bbc74 Mon Sep 17 00:00:00 2001
From: sos <sos@FreeBSD.org>
Date: Wed, 12 Oct 1994 20:28:32 +0000
Subject: [PATCH] Don't allow the same MISC module loading more than once..

---
 sys/kern/kern_lkm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/kern/kern_lkm.c b/sys/kern/kern_lkm.c
index 6f25cb9b8853..61aac0ece19d 100644
--- a/sys/kern/kern_lkm.c
+++ b/sys/kern/kern_lkm.c
@@ -893,6 +893,8 @@ lkmdispatch(lkmtp, cmd)
 		break;
 
 	case LM_MISC:	/* ignore content -- no "misc-specific" procedure */
+		if (lkmexists(lkmtp))
+			err = EEXIST;
 		break;
 
 	default: