Received: by 2002:a25:1506:0:0:0:0:0 with SMTP id 6csp2856067ybv; Mon, 24 Feb 2020 13:02:54 -0800 (PST) X-Google-Smtp-Source: APXvYqw5lTd1dAmJloEQscQ0s5Arse474HR7OYYJ/inNZFd62KG+kDY2h9OzBwnonyJsGhK/J8L2 X-Received: by 2002:a9d:811:: with SMTP id 17mr43298212oty.369.1582578174345; Mon, 24 Feb 2020 13:02:54 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1582578174; cv=none; d=google.com; s=arc-20160816; b=TOkYomavkG1c5NkxTGyzRnbuXYTTGSfvPVoq5+m8M9mHAwp5ipF/ShfYjtv7b8jWaY 0XLP9gqJnvb7UoiG2JcVg3hK9JaImy2MgUbDhw/zCLQQzsdzoLsj6SCAgTue+oKws5Er kDyC6QEIuUGtwrGjRbWuypLakGv+W1jQkLbNaGhL6yW1VRi142fjcAOzzOB0/DrcHcZP jWrkQ2euTDjZ6cRCtL0EKoOPvGdY3K13mPGk82+GvQBja7/FhKVPExo9AoTdAT88B2GQ v9aV1XCeyr2XK6MZKGJH33UCpu8G5vOH68ZiTmLg+Nr6oozpmuxIJH4/5KK88LaP7CYW xMgA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:from:subject:cc:to:message-id:date; bh=5UewMaWhEs+nLlcJd1V125SuHjlwmjFtoOzUx0vRBJ0=; b=Pq+8YGsnvRL/EvESJeKR3OEhpS++iOVLCAbP9eItF8Jd9I0ZrTQdccX202IcR8LGvc 9rbeAeqG56pFwEdaS6Ihv6j85zV0sY5U/DCCKHnYm5Sb0Ip4PTjeueNVGWbH++syZd5M KXWkA3Z+PXG2uySOck1cwroD+AxXPcP0UsWAXJf3kc8YoKVovUB3LPJtsVDYB+yVNngO luzwF1AT/1wvpF+joKePR1S+tFSxLCuJZGILyq/vtZJR9oFLT+3gSyNxdBBJzvf5rJzP /juIqO3exdUch8pUP8akM08zByUEXaw1bpJ2z57PI15u1NxpmGWLOWfbQNtpi3NrWlBw E22w== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id i15si5494917oik.46.2020.02.24.13.02.41; Mon, 24 Feb 2020 13:02:54 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727648AbgBXVCg (ORCPT + 99 others); Mon, 24 Feb 2020 16:02:36 -0500 Received: from shards.monkeyblade.net ([23.128.96.9]:38290 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726996AbgBXVCg (ORCPT ); Mon, 24 Feb 2020 16:02:36 -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 721A012199AC5; Mon, 24 Feb 2020 13:02:35 -0800 (PST) Date: Mon, 24 Feb 2020 13:02:32 -0800 (PST) Message-Id: <20200224.130232.525260099054528171.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, ulp: Pass lockdep expression to RCU lists From: David Miller In-Reply-To: <20200221151537.12334-1-frextrite@gmail.com> References: <20200221151537.12334-1-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 13:02:35 -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 20:45:38 +0530 > tcp_ulp_list is traversed using list_for_each_entry_rcu > outside an RCU read-side critical section but under the protection > of tcp_ulp_list_lock. > > Hence, add corresponding lockdep expression to silence false-positive > warnings, and harden RCU lists.t > > Signed-off-by: Amol Grover Applied.