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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 CB04DC35247 for ; Thu, 6 Feb 2020 21:55:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 88660214AF for ; Thu, 6 Feb 2020 21:55:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=zx2c4.com header.i=@zx2c4.com header.b="12M286Qc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727658AbgBFVzX (ORCPT ); Thu, 6 Feb 2020 16:55:23 -0500 Received: from frisell.zx2c4.com ([192.95.5.64]:55175 "EHLO frisell.zx2c4.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726765AbgBFVzX (ORCPT ); Thu, 6 Feb 2020 16:55:23 -0500 Received: by frisell.zx2c4.com (ZX2C4 Mail Server) with ESMTP id 76877a17; Thu, 6 Feb 2020 21:54:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=zx2c4.com; h=mime-version :references:in-reply-to:from:date:message-id:subject:to:cc :content-type; s=mail; bh=iEyYXoQeVJvL9VxBSqdINnENhik=; b=12M286 QcFw7FfPyXUco6JL08r7fRheSId3gtQL4kmvo3WK+hCB+kd0toeYc/mghSa19jwq tIPpgmpmkSjxghjAKTrRHPzbF+vhLq2CNgcx4F2UPCLtwbZdqHcjZ/a3zrOnHBBv KFzIu/HCMm72R2I2G7vvFXkOg0JF5+d3YDoGgl7E0i8nbREKFyvF/SAFeNA/sygr aPZOqTaftwxalanM8Iv2JBkwwOrFMaVWMYb6VZg7RMHpfYCkBUggltYHBSDziYSq J7Rpy1elZ2M1mlN72uIQlxvU33NrlwdeA25FIGa0Qx7pDoVLwGeG25eY71yw2/7W I+ro8sh+UWoIEh7w== Received: by frisell.zx2c4.com (ZX2C4 Mail Server) with ESMTPSA id 3e4ade7e (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256:NO); Thu, 6 Feb 2020 21:54:14 +0000 (UTC) Received: by mail-oi1-f173.google.com with SMTP id c16so6252794oic.3; Thu, 06 Feb 2020 13:55:20 -0800 (PST) X-Gm-Message-State: APjAAAW2gXE9oxCaffzDOE4I9xsWxeiFYoXn3SDmBq4AoBTmWwEvMTuZ A6ARu0WEO07l9dscrwKZRRvrKazNBVA3cFHR+CE= X-Google-Smtp-Source: APXvYqyEsdNrxjDdXuCYJDqUYruajj4xtoIZ5dk0Shwq1ewne2L7eFL197kHYxueoLyjEE5plCZkXk6x5VTXY0hNAgQ= X-Received: by 2002:aca:c383:: with SMTP id t125mr33887oif.122.1581026120166; Thu, 06 Feb 2020 13:55:20 -0800 (PST) MIME-Version: 1.0 References: <1580841629-7102-1-git-send-email-cai@lca.pw> <20200206163844.GA432041@zx2c4.com> <453212cf-8987-9f05-ceae-42a4fc3b0876@gmail.com> <495f79f5-ae27-478a-2a1d-6d3fba2d4334@gmail.com> <20200206184340.GA494766@zx2c4.com> In-Reply-To: <20200206184340.GA494766@zx2c4.com> From: "Jason A. Donenfeld" Date: Thu, 6 Feb 2020 22:55:08 +0100 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v3] skbuff: fix a data race in skb_queue_len() To: Eric Dumazet Cc: cai@lca.pw, Netdev , LKML , Marco Elver , Dmitry Vyukov Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Useful playground: https://godbolt.org/z/i7JFRW