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=-11.4 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_IN_DEF_DKIM_WL 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 0C8D2C5517A for ; Wed, 11 Nov 2020 11:22:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9463320756 for ; Wed, 11 Nov 2020 11:22:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="i2WztfGY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726339AbgKKLWA (ORCPT ); Wed, 11 Nov 2020 06:22:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33254 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726267AbgKKLV5 (ORCPT ); Wed, 11 Nov 2020 06:21:57 -0500 Received: from mail-qt1-x842.google.com (mail-qt1-x842.google.com [IPv6:2607:f8b0:4864:20::842]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E78D6C0613D4 for ; Wed, 11 Nov 2020 03:21:55 -0800 (PST) Received: by mail-qt1-x842.google.com with SMTP id n63so999993qte.4 for ; Wed, 11 Nov 2020 03:21:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=9GUAQtUoQBJhLZ2XitoYjqnMMxULsnKpkMbmeOjjv3M=; b=i2WztfGYNRVXSzvxNnLtoJr/4Y18F0RCxz3C2eRGM4x6rhFWD72gNezK491S3oTvZr bxSKgD8twhKNJgFXAjQhP7GQJCZyj45tUrtuCfzjZlkkUszfnUjIln+yJZq7ZRls8cWZ pk9/O7Z7RiwhDLpnqZ0M6vvSnTD9V9wtih6sZetU9yVGW9TlL3ObMR55SXPGgBbwcCpf SSQ+G62B+3GhNRnCOfNt+QCD4K5MX8lsRIhtisfWG6JHTx78hyakgdz2JeSTnU+DKKf1 4ycpQPo0vlwJT7R4H8zgZyh769jlBxlGUvyY9s48vjFVL0zq2lojKyTaoIhfwhLA0OiR U9CQ== 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=9GUAQtUoQBJhLZ2XitoYjqnMMxULsnKpkMbmeOjjv3M=; b=nhux9LcceX1OQ0e06YqDJcfoHntn0B/gIFwqJ+bmMkAZAlrA9joiZzK4iL5lw9JaDD d+p8CLciexOldijdavSjhMM5cuFBl8pc2HxHFaXFBtMACNJRTmg5YCuypBCx0UcANaQK jgUPiTMnSGv60X5Wi/mNRVfRjm2pV0w1J8EuivbPnGOko/4eC4KFdWQDSllQzMXjBZyQ VHmpERdiBd3hIdv1LURzz4MQCGZIBwjKteX4fw6SsXWDSnsehQbU2/YSlPn85aszEiNe H8FIKnOCA3cOP4GTXyd+DpqmAt9ouneJv8hhNc56gI4C/oXw3Ka077JPpH7yADjRdL3Q 0wAg== X-Gm-Message-State: AOAM531rNQ1YqPwiVYaPXXUAY3ZcIA+j0e76JHrhg3WMz0dNopqb0ajJ inLIdRUpbOhIhlUEoDseUbySIAOQa4sXZMIqTB3FYQ== X-Google-Smtp-Source: ABdhPJyDE0v7Tdf0pPWY/loP/q6ceYIuUoWpw6aqnIRsODilkVJ8Mn0Tlsnm9C8PN7+XRTyi9OdzrG+9Zu6hrjw8270= X-Received: by 2002:aed:2b47:: with SMTP id p65mr21554232qtd.337.1605093714929; Wed, 11 Nov 2020 03:21:54 -0800 (PST) MIME-Version: 1.0 References: <000000000000391eaf05ac87b74d@google.com> <00000000000004632a05af787ebf@google.com> In-Reply-To: <00000000000004632a05af787ebf@google.com> From: Dmitry Vyukov Date: Wed, 11 Nov 2020 12:21:43 +0100 Message-ID: Subject: Re: INFO: task hung in io_uring_flush To: syzbot Cc: Pavel Begunkov , Jens Axboe , io-uring@vger.kernel.org, linux-fsdevel , LKML , syzkaller-bugs , Al Viro Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On Thu, Sep 17, 2020 at 3:42 AM syzbot wrote: > > syzbot suspects this issue was fixed by commit: > > commit b7ddce3cbf010edbfac6c6d8cc708560a7bcd7a4 > Author: Pavel Begunkov > Date: Sat Sep 5 21:45:14 2020 +0000 > > io_uring: fix cancel of deferred reqs with ->files > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=173d9b0d900000 > start commit: 9123e3a7 Linux 5.9-rc1 > git tree: upstream > kernel config: https://syzkaller.appspot.com/x/.config?x=3d400a47d1416652 > dashboard link: https://syzkaller.appspot.com/bug?extid=6338dcebf269a590b668 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1573f116900000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=144d3072900000 > > If the result looks correct, please mark the issue as fixed by replying with: > > #syz fix: io_uring: fix cancel of deferred reqs with ->files > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection #syz fix: io_uring: fix cancel of deferred reqs with ->files