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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=no 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 24B10C38BE0 for ; Mon, 24 Feb 2020 21:07:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F2D4E20CC7 for ; Mon, 24 Feb 2020 21:07:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727827AbgBXVHX (ORCPT ); Mon, 24 Feb 2020 16:07:23 -0500 Received: from shards.monkeyblade.net ([23.128.96.9]:38380 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726996AbgBXVHX (ORCPT ); Mon, 24 Feb 2020 16:07:23 -0500 Received: from localhost (unknown [IPv6:2601:601:9f00:477::3d5]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id 4E3B812199AD5; Mon, 24 Feb 2020 13:07:22 -0800 (PST) Date: Mon, 24 Feb 2020 13:07:21 -0800 (PST) Message-Id: <20200224.130721.1089012217070055572.davem@davemloft.net> To: frextrite@gmail.com Cc: edumazet@google.com, kuznet@ms2.inr.ac.ru, yoshfuji@linux-ipv6.org, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-kernel-mentees@lists.linuxfoundation.org, joel@joelfernandes.org, madhuparnabhowmik10@gmail.com, paulmck@kernel.org, netdev@vger.kernel.org Subject: Re: [PATCH] tcp: ipv4: Pass lockdep expression to RCU lists From: David Miller In-Reply-To: <20200221175713.2112-1-frextrite@gmail.com> References: <20200221175713.2112-1-frextrite@gmail.com> X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Mon, 24 Feb 2020 13:07:22 -0800 (PST) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Amol Grover Date: Fri, 21 Feb 2020 23:27:14 +0530 > md5sig->head maybe traversed using hlist_for_each_entry_rcu > outside an RCU read-side critical section but under the protection > of socket lock. > > Hence, add corresponding lockdep expression to silence false-positive > warnings, and harden RCU lists. > > Signed-off-by: Amol Grover Applied.