From: deraadt <deraadt@openbsd.org>
Date: Tue, 4 Apr 2017 18:17:02 +0000 (+0000)
Subject: struct vfsconf is tightly packed, but let's M_ZERO it in case that ever
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=6cb46c1dd374ad42e36e6a4844869ba44861c40f;p=openbsd

struct vfsconf is tightly packed, but let's M_ZERO it in case that ever
changes to avoid exposing userland memory.
---

diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index a8a53052f66..8cdeb565922 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: vfs_subr.c,v 1.257 2017/01/15 23:18:05 bluhm Exp $	*/
+/*	$OpenBSD: vfs_subr.c,v 1.258 2017/04/04 18:17:02 deraadt Exp $	*/
 /*	$NetBSD: vfs_subr.c,v 1.53 1996/04/22 01:39:13 christos Exp $	*/
 
 /*
@@ -1311,7 +1311,7 @@ vfs_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
 			return (EOPNOTSUPP);
 
 		/* Make a copy, clear out kernel pointers */
-		tmpvfsp = malloc(sizeof(*tmpvfsp), M_TEMP, M_WAITOK);
+		tmpvfsp = malloc(sizeof(*tmpvfsp), M_TEMP, M_WAITOK|M_ZERO);
 		memcpy(tmpvfsp, vfsp, sizeof(*tmpvfsp));
 		tmpvfsp->vfc_vfsops = NULL;
 		tmpvfsp->vfc_next = NULL;