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=-14.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 F364CC636C8 for ; Tue, 20 Jul 2021 19:57:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CEB7860234 for ; Tue, 20 Jul 2021 19:57:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233622AbhGTTPg (ORCPT ); Tue, 20 Jul 2021 15:15:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60184 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234155AbhGTTPO (ORCPT ); Tue, 20 Jul 2021 15:15:14 -0400 Received: from mail-oo1-xc32.google.com (mail-oo1-xc32.google.com [IPv6:2607:f8b0:4864:20::c32]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 31254C061574; Tue, 20 Jul 2021 12:55:51 -0700 (PDT) Received: by mail-oo1-xc32.google.com with SMTP id 128-20020a4a11860000b029024b19a4d98eso57387ooc.5; Tue, 20 Jul 2021 12:55:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=3DB/7Fj/IaeliSZQDKbkmJzUxTFFzlMVmYcVBpZWbhU=; b=LEaiS9PHyFQpsX2JEjse16bR9k9zqQgsvlBghDEfnunfk71V6XfJ9K7g81nbS0ybyF h/CXOTRNrNbG0bmMcJmemczBkds3sepHYADQXW217jsDy+MeI/QFEDX30vg2CJ2HFFuG ppFZ1MQ1QUwvAHfcHB1HgHlk/AD9WT+ylWFsjHk6AFY7MK8SRjykzoXyVNg4AggFUpVo JPlWMKWMTPemdwyqNbMUDoSkDRPbnZNqZE50TjPRQsXROnSz0kR+uFvpknsdvKCAp0Jj GSA5GuQDAwlq52gl3FqlVS8sKbQ0kwhtuGGjfLMetQnxeSe7MXXY1IB9nrImlgSZrqz0 +tuQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=3DB/7Fj/IaeliSZQDKbkmJzUxTFFzlMVmYcVBpZWbhU=; b=gcLhbcQgQ819rgI+vQRwk5YONF8nrJXpOBjTjuU0UrUIfXMZIswOGKXwEwqthBTa1v uCT7zgFKXmCIzYUPJ+rNiWK7kWC0w7C7lI4sCF6mZ04CRejXMhOQHlsYvTORuMDVJiba KvrAKlmkM7io3opKcsS9h58AsSRvhM7yys9SDfRNw3GUdwpnwkIFl01hy0kz2GsFr6j/ lLySIfg3V9mdRXx2L+o3K9MXW9++HdVtpQpclL0QuK/Lj5jnD94xv0z3vQi9bPAgSCVx q7tFuQg5HB/C10gCb8bTEYIAODkfy9XuaYhM98paUHsyqq/pqGEKQ3YFWbHGIBpzT+xP 59/w== X-Gm-Message-State: AOAM530Hr1HNLYmlF/0gHybDsOk1drMaGPBzLBmtD/kKwUFnaNSDq0Rz fz/DDolWdO1lkYk7sYwAaPU= X-Google-Smtp-Source: ABdhPJyXEW3wwaugbKcaIjOp2U4MVZk16fbngBvrCqAurDhDtcvommFwlpcKVDuCCps5RxFCSbsETQ== X-Received: by 2002:a4a:2242:: with SMTP id z2mr21967622ooe.90.1626810950218; Tue, 20 Jul 2021 12:55:50 -0700 (PDT) Received: from Davids-MacBook-Pro.local ([8.48.134.38]) by smtp.googlemail.com with ESMTPSA id z3sm4315971otp.32.2021.07.20.12.55.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 20 Jul 2021 12:55:49 -0700 (PDT) Subject: Re: [PATCH] net/ipv6: Convert from atomic_t to refcount_t on ip6_flowlabel->users To: Xiyu Yang , "David S. Miller" , Hideaki YOSHIFUJI , David Ahern , Jakub Kicinski , =?UTF-8?Q?Andreas_F=c3=a4rber?= , Manivannan Sadhasivam , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-actions@lists.infradead.org Cc: yuanxzhang@fudan.edu.cn, Xin Tan References: <1626683707-64470-1-git-send-email-xiyuyang19@fudan.edu.cn> From: David Ahern Message-ID: Date: Tue, 20 Jul 2021 13:55:47 -0600 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <1626683707-64470-1-git-send-email-xiyuyang19@fudan.edu.cn> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 7/19/21 2:35 AM, Xiyu Yang wrote: > refcount_t type and corresponding API can protect refcounters from > accidental underflow and overflow and further use-after-free situations. > > Signed-off-by: Xiyu Yang > Signed-off-by: Xin Tan > --- > include/net/ipv6.h | 5 +++-- > net/ipv6/ip6_flowlabel.c | 18 +++++++++--------- > 2 files changed, 12 insertions(+), 11 deletions(-) > Reviewed-by: David Ahern