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=-6.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 8E4EEC433DF for ; Sat, 27 Jun 2020 18:08:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 742DE20760 for ; Sat, 27 Jun 2020 18:08:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="GX2bxF1C" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726586AbgF0SH7 (ORCPT ); Sat, 27 Jun 2020 14:07:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43110 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725900AbgF0SH6 (ORCPT ); Sat, 27 Jun 2020 14:07:58 -0400 Received: from mail-io1-xd2c.google.com (mail-io1-xd2c.google.com [IPv6:2607:f8b0:4864:20::d2c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 772FAC061794; Sat, 27 Jun 2020 11:07:58 -0700 (PDT) Received: by mail-io1-xd2c.google.com with SMTP id v8so13015933iox.2; Sat, 27 Jun 2020 11:07:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=ZypJVFE6v/3Jo2AiBRXxfrvf66bExjGHXFBsT718YSg=; b=GX2bxF1CEydDQc5wgJcXjloNHjNGMa9Zvm5DRbSodJunGDOTiK0N3rXEbx+uauBI9t JKaNHs36a+aossRbO48Qxa+K1+dFQiCM1RgaMmcMIHcCKn1bZxLYQHajlxNzlcd2rHJB +0kYMKKPmbxUqCKrlg/e4ehbJukcUw6w8I7YaPjaF6MOjIbGS7nKdX8Gi4GxMAE7Swfg jZ42bTOfiwWJtD0EMWDVLl5R01dsgGPs0AjBBI3733bHs1kgfIAods/aNxWrCA1cS+Al mpjjaf8tqVQNbU3Ug2gEeZLXLvIvkS6oyyNdddJPcL/1b11uMegYLlmGZrdtMtHaaZ3o QVig== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=ZypJVFE6v/3Jo2AiBRXxfrvf66bExjGHXFBsT718YSg=; b=JIum6AK2zsqUk9uGgRzd+O2W0VE9Vt8pZdZzuqza6+hgVGfiotcOROFsDjANw+V7bH zcW+GD1AHGouKcept1EotaVeHl5wP2kZUQFQwA66aAtMpJDMs3L3OVowjOlTOF79quh5 zAt+pmwlnt1feK5JiBcI/GsD/4q0xHGwhlC/8tkNim4OnNZfqU01LR6cHdQ4Y1GCY3G6 IelOZjPZWNNdl7VoMEOA2eAIDYz565SBJFpfUwaYYdQ3+Jzv1MUHGrDCJAzlQI58oYwc JejdnPEaU4QSgWIKuyxOnxJwiinbejlj/4Y9H29MoBbrAFjDC8D86+69ctrYNFpV9rpB gv7Q== X-Gm-Message-State: AOAM530Q6wibyjy44ODhasdZesCsYESB3bN+Buio1y6ikPwHt8iXRC2D kPq3FXK5xLsMqZViElgRGXG+zmjQl/SgBncnbIU= X-Google-Smtp-Source: ABdhPJxNDVyzjbgMHCyAFG9vELFj2zKXl2ULB/GhP9SY8wYywtMDst8YankLqwou/QRqS4GzHBnL+qPDF+xbmsk0bnI= X-Received: by 2002:a05:6602:2f0a:: with SMTP id q10mr9242943iow.134.1593281277227; Sat, 27 Jun 2020 11:07:57 -0700 (PDT) MIME-Version: 1.0 References: <000000000000cf1be105a8ffc44c@google.com> <000000000000d95a0505a910abd1@google.com> In-Reply-To: <000000000000d95a0505a910abd1@google.com> From: Cong Wang Date: Sat, 27 Jun 2020 11:07:47 -0700 Message-ID: Subject: Re: possible deadlock in dev_mc_unsync To: syzbot Cc: Taehee Yoo , David Miller , Jakub Kicinski , LKML , Linux Kernel Network Developers , syzkaller-bugs Content-Type: text/plain; charset="UTF-8" Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org #syz test: https://github.com/congwang/linux.git net