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=-18.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, USER_IN_DEF_DKIM_WL autolearn=ham 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 BACDAC433F5 for ; Mon, 20 Sep 2021 08:16:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A228B610A8 for ; Mon, 20 Sep 2021 08:16:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235464AbhITIRp (ORCPT ); Mon, 20 Sep 2021 04:17:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50258 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231749AbhITIRo (ORCPT ); Mon, 20 Sep 2021 04:17:44 -0400 Received: from mail-ot1-x32d.google.com (mail-ot1-x32d.google.com [IPv6:2607:f8b0:4864:20::32d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 71D60C061760 for ; Mon, 20 Sep 2021 01:16:18 -0700 (PDT) Received: by mail-ot1-x32d.google.com with SMTP id 67-20020a9d0449000000b00546e5a8062aso10446864otc.9 for ; Mon, 20 Sep 2021 01:16:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=SxNY97BOa0XmidHr8ngX6Xmdmy0rlhDyfhQlgL+xf9M=; b=PflVeIefh9PtZyUXgOPqCGhfsFGQSSoYDchsSVS5Wrh2uVaeVBJbila4EfZ/2fVXuP HJdnuNyXvRsF090bByE/Gj43INuq+5RbRXH78KatIS86fIQ8WgTnLdTMMOhRoFklJyMw uKIr96sGaEhw3+PQnryCOySdDSsY/f03Dbp50ugJ+HputJhUOvh1RuS9f6F3Q7X0Dp4f q6B9fYWrfi1TncQIfoET8rvBi3dL1XRRlB0DOapn9zdASXH15Lut5vMByWA82nxCboTN 0Q+cH15PLPCz+7qviSSM31rZpLHpPCqoP/mfcigc+aq2YOWHGP8UPUfQbAWChLz+39ff 2U1A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=SxNY97BOa0XmidHr8ngX6Xmdmy0rlhDyfhQlgL+xf9M=; b=7vhoZC2klmOrq0rNV6cmk/Va1pEMbNdTaIMNzZq/up4lDBxaWa/w/NtyW2nqjF2/NF 5vspGZSC+SR7DnymHM16dhOP9Jkb7Y67H4LS97DkjGGacadJLdaFRROk2Dt6I8dM7c+B ThDA5jQmJIPM+n6aKF15LDmG00SX3E+0JBeUgu3/TxGwG3Tf27xFIvtxj4UtgkAFP+eG Bub5F0PytAIKeJZ+MCBDrlb1gIN9NXz9nifeI5jkQcXI9FjmpORZtDc2V43P+WA2nO1A +nqiu1sX0cImRDfrJY+tpymSCz8wJkNt29WBAzWR1L1uMMj9jqlkZRP9mlZpGrdx43M9 EIAw== X-Gm-Message-State: AOAM530cpv97z4um7n3hbP5TxCQovSR4teu0SduNOWOqKtDeSajodSyr 9lfaMcEHGIf97a42W9oBlQgAECPVihfG2jZWSLUM8g== X-Google-Smtp-Source: ABdhPJxQYvOjJDSfjPQAxmlMvAz00/cVUDbJh6wOo5gIhqB/Ki9Kim5C50bKjMQiFlkco3PXh5M74WpTTLLbTThY1X0= X-Received: by 2002:a9d:7244:: with SMTP id a4mr20552216otk.137.1632125777610; Mon, 20 Sep 2021 01:16:17 -0700 (PDT) MIME-Version: 1.0 References: <00000000000022acbf05c06d9f0d@google.com> <00000000000053c98205cac53625@google.com> In-Reply-To: <00000000000053c98205cac53625@google.com> From: Dmitry Vyukov Date: Mon, 20 Sep 2021 10:16:06 +0200 Message-ID: Subject: Re: [syzbot] WARNING in io_poll_double_wake To: syzbot Cc: asml.silence@gmail.com, axboe@kernel.dk, haoxu@linux.alibaba.com, hdanton@sina.com, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On Mon, 30 Aug 2021 at 13:34, syzbot wrote: > > syzbot suspects this issue was fixed by commit: > > commit a890d01e4ee016978776e45340e521b3bbbdf41f > Author: Hao Xu > Date: Wed Jul 28 03:03:22 2021 +0000 > > io_uring: fix poll requests leaking second poll entries > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15d8819d300000 > start commit: 98f7fdced2e0 Merge tag 'irq-urgent-2021-07-11' of git://gi.. > git tree: upstream > kernel config: https://syzkaller.appspot.com/x/.config?x=139b08f9b7481d26 > dashboard link: https://syzkaller.appspot.com/bug?extid=f2aca089e6f77e5acd46 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11650180300000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1510c6b0300000 > > If the result looks correct, please mark the issue as fixed by replying with: > > #syz fix: io_uring: fix poll requests leaking second poll entries > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection Looks sane (io_uring commit fixes an issue in io_uring): #syz fix: io_uring: fix poll requests leaking second poll entries