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=-6.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_GIT autolearn=ham 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 6ED77C43441 for ; Sun, 11 Nov 2018 22:47:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3432C21527 for ; Sun, 11 Nov 2018 22:47:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="vkzW8ngv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3432C21527 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390944AbeKLIX2 (ORCPT ); Mon, 12 Nov 2018 03:23:28 -0500 Received: from mail.kernel.org ([198.145.29.99]:57060 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390887AbeKLIX1 (ORCPT ); Mon, 12 Nov 2018 03:23:27 -0500 Received: from localhost (unknown [206.108.79.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 18E4021582; Sun, 11 Nov 2018 22:33:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1541975610; bh=Bv8RpEdUhYMqZrk+MQ2Vb0R8tRd48PxpQYmjsTWVxXA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vkzW8ngvNvxKWMcbZiGIW7+6v8kiMCSBhoylIDY/OnQ58CH/H/9hweh49wRJSxeEg IXZzDUYxdrSfNwj7025rXVxSgIRbhYkW1rkp8P/7sCCCy6Z1NIlAIP7v8ppt/tf2ve bkaa6JkUDoell5/+yw3dFmA+nrEV0ngf3FcTwkRA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Florian Westphal , Steffen Klassert , Sasha Levin Subject: [PATCH 4.9 018/141] xfrm: policy: use hlist rcu variants on insert Date: Sun, 11 Nov 2018 14:24:37 -0800 Message-Id: <20181111221630.253983858@linuxfoundation.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181111221627.853046496@linuxfoundation.org> References: <20181111221627.853046496@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Florian Westphal [ Upstream commit 9dffff200fd178f11dd50eb1fd8ccd0650c9284e ] bydst table/list lookups use rcu, so insertions must use rcu versions. Fixes: a7c44247f704e ("xfrm: policy: make xfrm_policy_lookup_bytype lockless") Signed-off-by: Florian Westphal Signed-off-by: Steffen Klassert Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- net/xfrm/xfrm_policy.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -659,9 +659,9 @@ static void xfrm_hash_rebuild(struct wor break; } if (newpos) - hlist_add_behind(&policy->bydst, newpos); + hlist_add_behind_rcu(&policy->bydst, newpos); else - hlist_add_head(&policy->bydst, chain); + hlist_add_head_rcu(&policy->bydst, chain); } spin_unlock_bh(&net->xfrm.xfrm_policy_lock); @@ -800,9 +800,9 @@ int xfrm_policy_insert(int dir, struct x break; } if (newpos) - hlist_add_behind(&policy->bydst, newpos); + hlist_add_behind_rcu(&policy->bydst, newpos); else - hlist_add_head(&policy->bydst, chain); + hlist_add_head_rcu(&policy->bydst, chain); __xfrm_policy_link(policy, dir); atomic_inc(&net->xfrm.flow_cache_genid);