From b1b3a8653d0699479db2e24a1f3a9b1669fef569 Mon Sep 17 00:00:00 2001
From: John Baldwin <jhb@FreeBSD.org>
Date: Tue, 4 Nov 2008 18:53:33 +0000
Subject: [PATCH] Don't leak a reference on the /compat/linux vnode everytime
 the linprocfs 'mtab' file is read.

MFC after:	1 month
---
 sys/compat/linprocfs/linprocfs.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/sys/compat/linprocfs/linprocfs.c b/sys/compat/linprocfs/linprocfs.c
index 37468aa30f1c..50f2954d7532 100644
--- a/sys/compat/linprocfs/linprocfs.c
+++ b/sys/compat/linprocfs/linprocfs.c
@@ -318,11 +318,13 @@ linprocfs_domtab(PFS_FILL_ARGS)
 	NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_SYSSPACE, linux_emul_path, td);
 	flep = NULL;
 	error = namei(&nd);
-	VFS_UNLOCK_GIANT(NDHASGIANT(&nd));
-	if (error != 0 || vn_fullpath(td, nd.ni_vp, &dlep, &flep) != 0)
-		lep = linux_emul_path;
-	else
-		lep = dlep;
+	lep = linux_emul_path;
+	if (error == 0) {
+		if (vn_fullpath(td, nd.ni_vp, &dlep, &flep) != 0)
+			lep = dlep;
+		vrele(nd.ni_vp);
+		VFS_UNLOCK_GIANT(NDHASGIANT(&nd));
+	}
 	lep_len = strlen(lep);
 
 	mtx_lock(&mountlist_mtx);