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=-9.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 7F26BC433B4 for ; Thu, 29 Apr 2021 17:56:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 423B061405 for ; Thu, 29 Apr 2021 17:56:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241020AbhD2R4x (ORCPT ); Thu, 29 Apr 2021 13:56:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58274 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241007AbhD2R4w (ORCPT ); Thu, 29 Apr 2021 13:56:52 -0400 Received: from mail-wm1-x329.google.com (mail-wm1-x329.google.com [IPv6:2a00:1450:4864:20::329]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B9E8BC06138C; Thu, 29 Apr 2021 10:56:05 -0700 (PDT) Received: by mail-wm1-x329.google.com with SMTP id 4-20020a05600c26c4b0290146e1feccd8so226264wmv.1; Thu, 29 Apr 2021 10:56:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=x03N4U2d63n3eKi2aMlVnMhqfVRDG+Wr9njWqMaaWpE=; b=jtdhJq7eER/wGoAmMMV79BT+Pgj+kvjuArVHpXctq8kXcSIIxJdgdxZQyRtSQfquld wp6OnaFc+wq0yFxTvTA4sDbNnKdwCZuIECr3R1mq32W73Vc3AnB4/uVZsAQAsntlqFeH OfOFoWCOthKnFsSUWK9NEYFtM32rjK2bGdCkobqkm5TkOzRhhzfXjtIoyW+YDWprj3JM iejkoY6xwm+zhUuiaFGdaGoQY3qzbRJSTpiZs4Ub4nDm8gTwgw1CWIcGa0tXZaNnUV3L lvYE7a8npJWRTUjA7h0p7b1HSWmEHHETtTXPyEn+6To/Xy3SloAAEj9xb9L6KJp5wTVq e6ww== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=x03N4U2d63n3eKi2aMlVnMhqfVRDG+Wr9njWqMaaWpE=; b=LnbtqoXALlxhXD0M34PU8ZNM6L04mHby4tyTg+8OLDSjJBy6i2VMhVYJs22nFkKCm1 7d6e/bcMHDW0xw7vRdAvR33nI7dSiGER8jChgbr/XgTdmoTPy8+pXd9nfhRkQj3VlJHl 1lpcRd0JHgxYhvm96lMSQkgs+IYCLAXXIeDYknaTIuDJ+7w6SrBgXKKSugb/aNAlpWRI WDyAjBt3+tbCm6nHI4D4KMUGh4EyJguM/eJd14GEAjrOZ3Smf80juXtKu/hM+UTmJ+nY cwLQ2ojwGUX7AM3cguxx30wyMUffyCSoGdO3Dybp1RJ5nPUjBztkdOhiAouJYD1vn+Zm Gjqw== X-Gm-Message-State: AOAM530huQBedif6giKaQDvBn8bX4kBnZSrAv7oIry8YeZ0m12D0V9a+ xnKDb1rJhEfj8UwW7gc2d/Q= X-Google-Smtp-Source: ABdhPJxj1FuYyb3Uyrh4aTzIUcJpgQ6k1FcvqhGdtA7GiQvLNNGUxnxmsmsBNCCaLeaJy9Rn+kOmeA== X-Received: by 2002:a05:600c:41c2:: with SMTP id t2mr1431647wmh.169.1619718964505; Thu, 29 Apr 2021 10:56:04 -0700 (PDT) Received: from [192.168.8.197] ([148.252.132.80]) by smtp.gmail.com with ESMTPSA id v4sm995021wme.14.2021.04.29.10.56.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 29 Apr 2021 10:56:04 -0700 (PDT) Subject: Re: [syzbot] WARNING in io_uring_setup (2) To: syzbot , axboe@kernel.dk, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <00000000000014ec7c05c12012b1@google.com> From: Pavel Begunkov Message-ID: <8eec9ad4-3341-f136-0983-52f3c687f9da@gmail.com> Date: Thu, 29 Apr 2021 18:55:59 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.0 MIME-Version: 1.0 In-Reply-To: <00000000000014ec7c05c12012b1@google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 4/29/21 6:46 PM, syzbot wrote: > syzbot has bisected this issue to: > > commit eae071c9b4cefbcc3f985c5abf9a6e32c1608ca9 > Author: Pavel Begunkov > Date: Sun Apr 25 13:32:24 2021 +0000 > > io_uring: prepare fixed rw for dynanic buffers > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13f639edd00000 > start commit: d72cd4ad Merge tag 'scsi-misc' of git://git.kernel.org/pub.. > git tree: upstream > final oops: https://syzkaller.appspot.com/x/report.txt?x=100e39edd00000 > console output: https://syzkaller.appspot.com/x/log.txt?x=17f639edd00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=53fdf14defd48c56 > dashboard link: https://syzkaller.appspot.com/bug?extid=1eca5b0d7ac82b74d347 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15aeff43d00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1747117dd00000 > > Reported-by: syzbot+1eca5b0d7ac82b74d347@syzkaller.appspotmail.com > Fixes: eae071c9b4ce ("io_uring: prepare fixed rw for dynanic buffers") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection #syz test: git://git.kernel.dk/linux-block io_uring-5.13 -- Pavel Begunkov