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=-5.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS 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 6262EC433DF for ; Sun, 28 Jun 2020 14:11:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4C1B920738 for ; Sun, 28 Jun 2020 14:11:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726490AbgF1OLG (ORCPT ); Sun, 28 Jun 2020 10:11:06 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:35090 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726344AbgF1OLF (ORCPT ); Sun, 28 Jun 2020 10:11:05 -0400 Received: by mail-il1-f197.google.com with SMTP id m14so10479082iln.2 for ; Sun, 28 Jun 2020 07:11:05 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=e3mM+wVWZMbblXjHpKh3rVh40chIjEQjp+JbUdH4Rk8=; b=rfk1UU9Kh3q5RDMeqladyA/9Teg1ioqoYTToXxbn5lpaNwN4Y+7XcHQYAim4GrDMek p3PMHraaaJxP6R1/D6TqEGaWxSeVJXjyNZGaFclkiKHsXpqqw/5UWis6mK0T7HbppD4K JckxLwowwNNIwvSe2oly5ToWGxYHrvFW+ZN0OSslA9C5tTN8sdCS7FJB2Ib8mrcRUMIP Ho00ZbFv5SLxdYltDEnAQ9UlptMCYW1OLE+KRD+kgGD2Mew8jv4qv6Hs/sIUWTVRsrfB okV4nRvboOFmB8EJHwcFxKdc+WHhRBVEmuXEcBpGX5rq/ocVy9bmMgTvuJP3smO82SBu BL3g== X-Gm-Message-State: AOAM532fZ7g4vF+WQL5U3DRUJRdBx3xxxohzUY8GyhsQ1zEk2kyAnn53 BriOZpcFRh+qzcn8bqKhXZR/jfQ+wMv6emciF3AQ1bKCH2y7 X-Google-Smtp-Source: ABdhPJz5MwNDHEotHDtTCu6kgkRqMjtTHZ3HOcTj8A4ZUaTiR/zkq5ulZ5jdY9rlNC6HnAnYr5pTa3pe9jMG8+5SS3I+fOL0zhJz MIME-Version: 1.0 X-Received: by 2002:a05:6638:236:: with SMTP id f22mr13173946jaq.18.1593353465153; Sun, 28 Jun 2020 07:11:05 -0700 (PDT) Date: Sun, 28 Jun 2020 07:11:05 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000004ad07105a9258303@google.com> Subject: Re: possible deadlock in dev_mc_unsync From: syzbot To: ap420073@gmail.com, davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, xiyou.wangcong@gmail.com Content-Type: text/plain; charset="UTF-8" Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot has tested the proposed patch and the reproducer did not trigger crash: Reported-and-tested-by: syzbot+08e3d39f3eb8643216be@syzkaller.appspotmail.com Tested on: commit: 152c6a4d genetlink: get rid of family->attrbuf git tree: https://github.com/congwang/linux.git net kernel config: https://syzkaller.appspot.com/x/.config?x=bf3aec367b9ab569 dashboard link: https://syzkaller.appspot.com/bug?extid=08e3d39f3eb8643216be compiler: gcc (GCC) 10.1.0-syz 20200507 Note: testing is done by a robot and is best-effort only.