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=-3.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 3D45FC433E0 for ; Mon, 15 Mar 2021 19:09:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 17C7F64F18 for ; Mon, 15 Mar 2021 19:09:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233254AbhCOTJN (ORCPT ); Mon, 15 Mar 2021 15:09:13 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:33742 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232825AbhCOTIl (ORCPT ); Mon, 15 Mar 2021 15:08:41 -0400 Received: by mail-il1-f199.google.com with SMTP id k4so15828670ili.0 for ; Mon, 15 Mar 2021 12:08:41 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=/mrm/Dlydg6hO1FVZ+2T84nuCJe4bOszaXqCBMOqrkM=; b=sW6RTTF6gom8ttjPv0XhLUvu9S22rMuVDq5rhH3VMo0uXm9AY5kC0KM4GsSYHzW6yx lpDavgV2iQdnyP9479lvNzdupwpu7ij2+ekKVFwu4GpolyjbJ3euT2tqeYVc8R8Erni6 RFcvrZdw6/7+aeWfWAKSNMLK5lDTxVeD3GiWZ+asn9IgOg8VEUDnYNzOehbw087/EiqH nWgIR1p63peZKIFgXqvu4Ylte9hhgaawBD6oGEpg5oRrZg8DhdBOYwR3F6xyvIoXFcrL Gk/CkutghTI60QYaj7VRAsb4ky4V5snMCaW+cgt6jx6cNcDnjyqx50xstYQFflmfXetk fbCA== X-Gm-Message-State: AOAM531sl5ORMp16LWXi4aOOfYZZ5aVLUtzePww3eWWQqtwipa7UHf8Z aqUcZw3C3gnr756BFbVV9FJUrUfQdl4seB2KA7buoEt4a+/5 X-Google-Smtp-Source: ABdhPJxpfkuCB0z+KQgDbj9FZZCNswQBHJfoFoPaaCWLGG9Ad7xWgel986EaH/AwaISW8/y4M6eF+ITlI1Av0+iJ7BGUG9YNhB8k MIME-Version: 1.0 X-Received: by 2002:a5e:8d01:: with SMTP id m1mr788943ioj.72.1615835320949; Mon, 15 Mar 2021 12:08:40 -0700 (PDT) Date: Mon, 15 Mar 2021 12:08:40 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000005225a605bd97fa64@google.com> Subject: [syzbot] WARNING in io_ring_exit_work From: syzbot To: asml.silence@gmail.com, axboe@kernel.dk, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: b01d57bf Add linux-next specific files for 20210310 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=10ae049ed00000 kernel config: https://syzkaller.appspot.com/x/.config?x=95af83fd326c2b5 dashboard link: https://syzkaller.appspot.com/bug?extid=00e15cda746c5bc70e24 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+00e15cda746c5bc70e24@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 225 at fs/io_uring.c:8456 io_ring_exit_work+0x130/0xcf0 fs/io_uring.c:8456 Modules linked in: CPU: 0 PID: 225 Comm: kworker/u4:5 Not tainted 5.12.0-rc2-next-20210310-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound io_ring_exit_work RIP: 0010:io_ring_exit_work+0x130/0xcf0 fs/io_uring.c:8456 Code: 7d 00 00 0f 85 bf 09 00 00 48 8b 05 3a 15 e5 09 4d 89 f5 31 ff 49 29 c5 4c 89 ee e8 6a 09 98 ff 4d 85 ed 79 a5 e8 40 01 98 ff <0f> 0b eb 9c e8 37 01 98 ff 31 f6 49 bf 00 00 00 00 00 fc ff df 4c RSP: 0018:ffffc9000163fbc8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88801dd36930 RCX: 0000000000000000 RDX: ffff8880120d9c00 RSI: ffffffff81dbdc60 RDI: 0000000000000003 RBP: fffffbfff1781e30 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff81dbdc56 R11: 0000000000000000 R12: ffff88801dd364e0 R13: fffffffffffffffe R14: 00000001000040a4 R15: ffff88801dd36000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcf0ff32000 CR3: 00000000180fb000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work+0x98d/0x1600 kernel/workqueue.c:2275 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.