From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AC84FC10F11 for ; Mon, 22 Apr 2019 19:56:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6FD5A204EC for ; Mon, 22 Apr 2019 19:56:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1555962988; bh=cpO1M042OdEsWOveS50lopsUJ4R9P/XxypX5DYAfwjs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=vrQajN/8BT3ziya+Lc77+ElSUdP95+TrG5DcLzKCxRFMXRAHM8tzKXVvWlehCnwxa mFZ9z9Q0pAd0lXUbyN7JGFtr3AOYERvBCpnbs7fIKTkvrn8cQSOM6g6d2ZT77Xop1K 5v1T7D50FxUjV46k/WSesaUY6nK0Ijdnfjirr7P4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730689AbfDVTs4 (ORCPT ); Mon, 22 Apr 2019 15:48:56 -0400 Received: from mail.kernel.org ([198.145.29.99]:52480 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730678AbfDVTsz (ORCPT ); Mon, 22 Apr 2019 15:48:55 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EE41921902; Mon, 22 Apr 2019 19:48:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1555962534; bh=cpO1M042OdEsWOveS50lopsUJ4R9P/XxypX5DYAfwjs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hR+lJzhZGlvdjxQlA9ID5q+jiaJIlj4yXXscwRs1vPfKAeEuUzYu0SMcV+u484Ag/ LAeZ1DPbuUROU0CTH/6JSV2aoX7T76xZFSx2vnC3d2fBq7L/AR/1E4lxKT8UKdrLNL NonAtsYBLazrdL84PMyhgUS+eZBY0GJqEHmgzT0g= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Pablo Neira Ayuso , Sasha Levin , netfilter-devel@vger.kernel.org, coreteam@netfilter.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 04/29] netfilter: nft_set_rbtree: check for inactive element after flag mismatch Date: Mon, 22 Apr 2019 15:48:23 -0400 Message-Id: <20190422194848.13049-4-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190422194848.13049-1-sashal@kernel.org> References: <20190422194848.13049-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netfilter-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org From: Pablo Neira Ayuso [ Upstream commit 05b7639da55f5555b9866a1f4b7e8995232a6323 ] Otherwise, we hit bogus ENOENT when removing elements. Fixes: e701001e7cbe ("netfilter: nft_rbtree: allow adjacent intervals with dynamic updates") Reported-by: Václav Zindulka Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin (Microsoft) --- net/netfilter/nft_set_rbtree.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/net/netfilter/nft_set_rbtree.c b/net/netfilter/nft_set_rbtree.c index 93820e0d8814..4ee8acded0a4 100644 --- a/net/netfilter/nft_set_rbtree.c +++ b/net/netfilter/nft_set_rbtree.c @@ -191,10 +191,6 @@ static void *nft_rbtree_deactivate(const struct net *net, else if (d > 0) parent = parent->rb_right; else { - if (!nft_set_elem_active(&rbe->ext, genmask)) { - parent = parent->rb_left; - continue; - } if (nft_rbtree_interval_end(rbe) && !nft_rbtree_interval_end(this)) { parent = parent->rb_left; @@ -203,6 +199,9 @@ static void *nft_rbtree_deactivate(const struct net *net, nft_rbtree_interval_end(this)) { parent = parent->rb_right; continue; + } else if (!nft_set_elem_active(&rbe->ext, genmask)) { + parent = parent->rb_left; + continue; } nft_set_elem_change_active(net, set, &rbe->ext); return rbe; -- 2.19.1