Path: csiph.com!eternal-september.org!feeder.eternal-september.org!aioe.org!bofh.it!news.nic.it!robomod From: Greg Kroah-Hartman Newsgroups: linux.kernel Subject: [PATCH 4.4 114/118] mn10300: copy_from_user() should zero on access_ok() failure... Date: Thu, 22 Sep 2016 19:40:01 +0200 Message-ID: References: X-Mailer: git-send-email 2.10.0 User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: robomod@news.nic.it List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Approved: robomod@news.nic.it Lines: 35 Organization: linux.* mail to news gateway X-Original-Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Al Viro X-Original-Date: Thu, 22 Sep 2016 19:30:14 +0200 X-Original-Message-ID: <20160922172944.493999044@linuxfoundation.org> X-Original-References: <20160922172938.643879685@linuxfoundation.org> X-Original-Sender: linux-kernel-owner@vger.kernel.org Xref: csiph.com linux.kernel:1489123 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Al Viro commit ae7cc577ec2a4a6151c9e928fd1f595d953ecef1 upstream. Signed-off-by: Al Viro Signed-off-by: Greg Kroah-Hartman --- arch/mn10300/lib/usercopy.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/arch/mn10300/lib/usercopy.c +++ b/arch/mn10300/lib/usercopy.c @@ -9,7 +9,7 @@ * as published by the Free Software Foundation; either version * 2 of the Licence, or (at your option) any later version. */ -#include +#include unsigned long __generic_copy_to_user(void *to, const void *from, unsigned long n) @@ -24,6 +24,8 @@ __generic_copy_from_user(void *to, const { if (access_ok(VERIFY_READ, from, n)) __copy_user_zeroing(to, from, n); + else + memset(to, 0, n); return n; }