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=-10.5 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,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=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 88570C433E0 for ; Mon, 10 Aug 2020 15:59:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6765B2177B for ; Mon, 10 Aug 2020 15:59:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="Af84A0Bg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727118AbgHJP7r (ORCPT ); Mon, 10 Aug 2020 11:59:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41072 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726284AbgHJP7q (ORCPT ); Mon, 10 Aug 2020 11:59:46 -0400 Received: from mail-pj1-x1043.google.com (mail-pj1-x1043.google.com [IPv6:2607:f8b0:4864:20::1043]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D4000C061756 for ; Mon, 10 Aug 2020 08:59:46 -0700 (PDT) Received: by mail-pj1-x1043.google.com with SMTP id e4so43602pjd.0 for ; Mon, 10 Aug 2020 08:59:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=MiKCqoXdUf/2WubtKvSf2rupw05n9LRpZ3rO8JCm+vc=; b=Af84A0BggrByw4vHDx1dAdV87MrXS0sOrpytPzbUyfA9s1aILwtNUcYsmyZUROIV71 lJZf3nMP6tnNGLy3SCjtxZ7W1RfVaUYeh5gMQAgp9YNIT3WwoIgym4NliD2Cy7bUO4c4 1M6FnSLgCdZJyddM79h45zkdQdI7FI9k4B3ksDHwFnMu1CseFl1XeDs005JiyPhB1Foe pW1Wc2A/u6mBHltbbS25UmKC9+1uhMq9I5AM6Is2tC7ya428Fw4P84zyu8UFXKmMTIdC x10AUTUg1cZPf8KB30OjlgjD0wUch+hApVJR1KTvufmqn0iirsDAY7HAEFLwRv171AKp N2KQ== 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=MiKCqoXdUf/2WubtKvSf2rupw05n9LRpZ3rO8JCm+vc=; b=M8lv+ej40OJs5TtgH5iwPrmftaAmYkqOinVBaRQS8XWgdnz2aYSJoF1AorI7/jpqdS 8CwV1/nzch7wAn8GQGXiMAyP/oVkXho5uIGfrv1VRP7amtX0vV2eJjSdtkfowqGyON/M b6o6TPiu2ROrWruxyd/gUYqD1W/Dd+AjexWKzWmgyAixgwA8vHYwtPcpicR3h5E1O1ss qeXfTg0HNtIhdwMUFN5BeBcYHeerO5ckgLR11QyhQgFRY4rX+hLv01294xpio+3IXb8d n9ZKOON9ebpPmDiBWEmIDW75/V+jdvrt6qyndPciZNVlT2UOdAdiKryiPPlJY/3/RbTx cBdA== X-Gm-Message-State: AOAM532oMUG6QISZRGOAbH4HHMnHVHtfI93O1TY6ihRUwEshK4gVdC+f ODXo14slqH/n0n96xllE16BXaA== X-Google-Smtp-Source: ABdhPJwrTgvyRGM682n5Xv3THn244Q2QL2ztJSEx/PjieoN6YI4PI10UkhvjCSh5OzaAPD+hptZgKA== X-Received: by 2002:a17:902:6ac4:: with SMTP id i4mr18393118plt.146.1597075186146; Mon, 10 Aug 2020 08:59:46 -0700 (PDT) Received: from [192.168.1.182] ([66.219.217.173]) by smtp.gmail.com with ESMTPSA id t13sm18720517pgm.32.2020.08.10.08.59.45 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 10 Aug 2020 08:59:45 -0700 (PDT) Subject: Re: possible deadlock in io_queue_linked_timeout To: syzbot , io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk References: <000000000000d07f9605ac87ba9e@google.com> From: Jens Axboe Message-ID: Date: Mon, 10 Aug 2020 09:59:44 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <000000000000d07f9605ac87ba9e@google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 8/10/20 9:37 AM, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 06a81c1c Merge tag 'arm64-fixes' of git://git.kernel.org/p.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=13fbac1c900000 > kernel config: https://syzkaller.appspot.com/x/.config?x=bf68a13f867fd1b4 > dashboard link: https://syzkaller.appspot.com/bug?extid=d4586d3028284ff8a0be > compiler: gcc (GCC) 10.1.0-syz 20200507 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1362024e900000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1672fd34900000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+d4586d3028284ff8a0be@syzkaller.appspotmail.com Looks like a dupe of: syzbot+996f91b6ec3812c48042@syzkaller.appspotmail.com -- Jens Axboe