From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:42218 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753624AbcA0G27 (ORCPT ); Wed, 27 Jan 2016 01:28:59 -0500 Subject: Patch "addrconf: always initialize sysctl table data" has been added to the 4.1-stable tree To: xiyou.wangcong@gmail.com, davem@davemloft.net, gregkh@linuxfoundation.org, hannes@stressinduktion.org, sasha.levin@oracle.com Cc: , From: Date: Tue, 26 Jan 2016 22:27:34 -0800 Message-ID: <14538760545285@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled addrconf: always initialize sysctl table data to the 4.1-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: addrconf-always-initialize-sysctl-table-data.patch and it can be found in the queue-4.1 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Tue Jan 26 21:37:04 PST 2016 From: WANG Cong Date: Mon, 21 Dec 2015 10:55:45 -0800 Subject: addrconf: always initialize sysctl table data From: WANG Cong [ Upstream commit 5449a5ca9bc27dd51a462de7ca0b1cd861cd2bd0 ] When sysctl performs restrict writes, it allows to write from a middle position of a sysctl file, which requires us to initialize the table data before calling proc_dostring() for the write case. Fixes: 3d1bec99320d ("ipv6: introduce secret_stable to ipv6_devconf") Reported-by: Sasha Levin Acked-by: Hannes Frederic Sowa Tested-by: Sasha Levin Signed-off-by: Cong Wang Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/ipv6/addrconf.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -5267,13 +5267,10 @@ static int addrconf_sysctl_stable_secret goto out; } - if (!write) { - err = snprintf(str, sizeof(str), "%pI6", - &secret->secret); - if (err >= sizeof(str)) { - err = -EIO; - goto out; - } + err = snprintf(str, sizeof(str), "%pI6", &secret->secret); + if (err >= sizeof(str)) { + err = -EIO; + goto out; } err = proc_dostring(&lctl, write, buffer, lenp, ppos); Patches currently in stable-queue which might be from xiyou.wangcong@gmail.com are queue-4.1/addrconf-always-initialize-sysctl-table-data.patch