From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org ([198.145.29.99]:48772 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934968AbeFLQws (ORCPT ); Tue, 12 Jun 2018 12:52:48 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sabrina Dubroca , "David S. Miller" Subject: [PATCH 4.4 12/24] ip6mr: only set ip6mr_table from setsockopt when ip6mr_new_table succeeds Date: Tue, 12 Jun 2018 18:51:56 +0200 Message-Id: <20180612164817.181262749@linuxfoundation.org> In-Reply-To: <20180612164816.587001852@linuxfoundation.org> References: <20180612164816.587001852@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sabrina Dubroca [ Upstream commit 848235edb5c93ed086700584c8ff64f6d7fc778d ] Currently, raw6_sk(sk)->ip6mr_table is set unconditionally during ip6_mroute_setsockopt(MRT6_TABLE). A subsequent attempt at the same setsockopt will fail with -ENOENT, since we haven't actually created that table. A similar fix for ipv4 was included in commit 5e1859fbcc3c ("ipv4: ipmr: various fixes and cleanups"). Fixes: d1db275dd3f6 ("ipv6: ip6mr: support multiple tables") Signed-off-by: Sabrina Dubroca Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/ipv6/ip6mr.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -1787,7 +1787,8 @@ int ip6_mroute_setsockopt(struct sock *s ret = 0; if (!ip6mr_new_table(net, v)) ret = -ENOMEM; - raw6_sk(sk)->ip6mr_table = v; + else + raw6_sk(sk)->ip6mr_table = v; rtnl_unlock(); return ret; }