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=-5.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 9A20AC433C1 for ; Mon, 22 Mar 2021 17:54:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 71E4061974 for ; Mon, 22 Mar 2021 17:54:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230245AbhCVRx2 (ORCPT ); Mon, 22 Mar 2021 13:53:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37102 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230107AbhCVRw6 (ORCPT ); Mon, 22 Mar 2021 13:52:58 -0400 Received: from mail-io1-xd2e.google.com (mail-io1-xd2e.google.com [IPv6:2607:f8b0:4864:20::d2e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4838FC061574 for ; Mon, 22 Mar 2021 10:52:58 -0700 (PDT) Received: by mail-io1-xd2e.google.com with SMTP id k8so14858671iop.12 for ; Mon, 22 Mar 2021 10:52:58 -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=yr3uVFpZsGP6y6mCVcoKrKpf10uPPAPG825Fgeh8r3M=; b=sgKE9GEIJZZ8J8QaRVTodmXYIWRVuQ7c5PYk03WbVi3HpRV1tyjW4HSY3p8sNtwf2v rHboBLPCle9Yhf2h6BQSjMtFcjUW531sF4rjNYd/fRkdpVbhKXH8tFFPqJCHkIYipK3C qLRjWCCvtaZvPZreR/B9C14oRDnUsi3zibwsctPJadUnzNjbr31e/z9i6hergb6CTtCr BwY8XWGiy/RUofXKqHFycNt51aiAjLbtIRpM0mtkfZ2bulM/HU/NHxVxL25vcDVPwJOj eqzywJn2p28t/pabUStCi6Tf50EidR4paPCDChPDohCBQFBDHjPdxs4MYWP/7cQxRL9k 5yLw== 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=yr3uVFpZsGP6y6mCVcoKrKpf10uPPAPG825Fgeh8r3M=; b=CyVEliVyA4tZgLoQqzy+AR5zZMQs/aXlasM3cT1vumnQyXU+4aVp19NXqiLpvQkng0 Qq6Lo7LiJsoasiEAzDpY74tz/6/bi+TQwaZ4FsbenIXUAxh/MQ4FEG8aPy/5a5RG0TCJ Z2Z8D63FGiPYPrE8iqwQwkl/odwTcwUHCHt/41i6J4KNrQab0ztoQWBzBJORL270zg0S TdhLeTJ5eO6yfrRTVzR8OVUG8BAI+ZshqgENCmP6LKhK7j6+X3pAS3rW+pjOV8wF5N0X V6GWWCYeizrin+MktII9zSdT+ZGurTW2VltorIjeGEJxAL77a8+CDF2OtmAV/tSqHixJ yBRA== X-Gm-Message-State: AOAM531Jt3AyXEMuhfwOG1t2zaQ1ubFSfRSRIJO3qLiDkpdq4Q4Rr1Zt RC310Dl89vIPvfohecIVubmf8XXII/pWzA== X-Google-Smtp-Source: ABdhPJwsTkV+g0gwgComJirE6WV2njA/M8hf5Mp0aimHbzi26uO6yPYNVuMbdGZVLs7aprDGRXwLOQ== X-Received: by 2002:a05:6638:1648:: with SMTP id a8mr503992jat.25.1616435577699; Mon, 22 Mar 2021 10:52:57 -0700 (PDT) Received: from [192.168.1.30] ([65.144.74.34]) by smtp.gmail.com with ESMTPSA id b19sm7908173ioj.50.2021.03.22.10.52.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 22 Mar 2021 10:52:57 -0700 (PDT) Subject: Re: [syzbot] WARNING in io_wq_destroy To: syzbot , asml.silence@gmail.com, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <00000000000077ef5d05be23841a@google.com> From: Jens Axboe Message-ID: <3f06cc8a-0538-c950-9db0-6cf177ebd87d@kernel.dk> Date: Mon, 22 Mar 2021 11:52:56 -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: <00000000000077ef5d05be23841a@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 3/22/21 11:37 AM, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 0d02ec6b Linux 5.12-rc4 > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=1739e4aad00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=5adab0bdee099d7a > dashboard link: https://syzkaller.appspot.com/bug?extid=831debb250650baf4827 > > Unfortunately, I don't have any reproducer for this issue yet. > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+831debb250650baf4827@syzkaller.appspotmail.com > > ------------[ cut here ]------------ > WARNING: CPU: 0 PID: 15234 at fs/io-wq.c:1068 io_wq_destroy+0x1dd/0x240 fs/io-wq.c:1068 > Modules linked in: > CPU: 1 PID: 15234 Comm: syz-executor.5 Not tainted 5.12.0-rc4-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > RIP: 0010:io_wq_destroy+0x1dd/0x240 fs/io-wq.c:1068 > Code: 48 c1 ea 03 80 3c 02 00 75 6e 49 8b 3c 24 e8 2a b3 d8 ff 4c 89 e7 5b 5d 41 5c 41 5d 41 5e 41 5f e9 18 b3 d8 ff e8 73 b1 95 ff <0f> 0b e9 02 ff ff ff e8 67 b1 95 ff 48 89 ef e8 ff b2 d8 ff eb ae > RSP: 0018:ffffc90016cb7950 EFLAGS: 00010293 > RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 > RDX: ffff88801362d4c0 RSI: ffffffff81de3cbd RDI: ffff888022177840 > RBP: ffff888022177800 R08: 000000000000003f R09: ffff8880254cb80f > R10: ffffffff81de3b50 R11: 0000000000000000 R12: ffff8880254cb800 > R13: dffffc0000000000 R14: ffffed1004a99700 R15: 0000000000000040 > FS: 00007f51c4a75700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000001b32424000 CR3: 000000002a3f7000 CR4: 00000000001506e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > io_wq_put fs/io-wq.c:1079 [inline] > io_wq_put_and_exit+0x8d/0xc0 fs/io-wq.c:1086 > io_uring_clean_tctx+0xed/0x160 fs/io_uring.c:8890 > __io_uring_files_cancel+0x503/0x5f0 fs/io_uring.c:8955 > io_uring_files_cancel include/linux/io_uring.h:22 [inline] > do_exit+0x299/0x2a60 kernel/exit.c:780 > do_group_exit+0x125/0x310 kernel/exit.c:922 > get_signal+0x42c/0x2100 kernel/signal.c:2777 > arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:789 > handle_signal_work kernel/entry/common.c:147 [inline] > exit_to_user_mode_loop kernel/entry/common.c:171 [inline] > exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:208 > __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] > syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:301 > entry_SYSCALL_64_after_hwframe+0x44/0xae > RIP: 0033:0x466459 > Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 > RSP: 002b:00007f51c4a75188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa > RAX: 0000000000000100 RBX: 000000000056bf60 RCX: 0000000000466459 > RDX: 0000000000000000 RSI: 0000000000002039 RDI: 0000000000000003 > RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 > R13: 0000000000a9fb1f R14: 00007f51c4a75300 R15: 0000000000022000 Still looking into this one, so far no luck in reproducing. But this report is a dupe/identical of the previous one, so let's not track both: #syz dup: [syzbot] WARNING in io_wq_put -- Jens Axboe