From owner-svn-src-head@FreeBSD.ORG  Wed Jul 16 14:08:02 2014
Return-Path: <owner-svn-src-head@FreeBSD.ORG>
Delivered-To: svn-src-head@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 10BCAC02;
 Wed, 16 Jul 2014 14:08:02 +0000 (UTC)
Received: from svn.freebsd.org (svn.freebsd.org
 [IPv6:2001:1900:2254:2068::e6a:0])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id F1BA92CA7;
 Wed, 16 Jul 2014 14:08:01 +0000 (UTC)
Received: from svn.freebsd.org ([127.0.1.70])
 by svn.freebsd.org (8.14.8/8.14.8) with ESMTP id s6GE81wM004570;
 Wed, 16 Jul 2014 14:08:01 GMT (envelope-from kib@svn.freebsd.org)
Received: (from kib@localhost)
 by svn.freebsd.org (8.14.8/8.14.8/Submit) id s6GE81WR004569;
 Wed, 16 Jul 2014 14:08:01 GMT (envelope-from kib@svn.freebsd.org)
Message-Id: <201407161408.s6GE81WR004569@svn.freebsd.org>
From: Konstantin Belousov <kib@FreeBSD.org>
Date: Wed, 16 Jul 2014 14:08:01 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: svn commit: r268766 - head/sys/fs/tmpfs
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
 <svn-src-head.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head/>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 16 Jul 2014 14:08:02 -0000

Author: kib
Date: Wed Jul 16 14:08:01 2014
New Revision: 268766
URL: http://svnweb.freebsd.org/changeset/base/268766

Log:
  Do not ignore error from tmpfs_alloc_vp().  It results in access to
  the random memory.
  
  Reported and tested by:	pho
  Sponsored by:	The FreeBSD Foundation
  MFC after:	2 weeks

Modified:
  head/sys/fs/tmpfs/tmpfs_vnops.c

Modified: head/sys/fs/tmpfs/tmpfs_vnops.c
==============================================================================
--- head/sys/fs/tmpfs/tmpfs_vnops.c	Wed Jul 16 14:06:16 2014	(r268765)
+++ head/sys/fs/tmpfs/tmpfs_vnops.c	Wed Jul 16 14:08:01 2014	(r268766)
@@ -185,7 +185,9 @@ tmpfs_lookup(struct vop_cachedlookup_arg
 				cnp->cn_flags |= SAVENAME;
 			} else {
 				error = tmpfs_alloc_vp(dvp->v_mount, tnode,
-						cnp->cn_lkflags, vpp);
+				    cnp->cn_lkflags, vpp);
+				if (error != 0)
+					goto out;
 			}
 		}
 	}