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=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS 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 45ACBC43381 for ; Mon, 11 Mar 2019 13:23:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1725E2084F for ; Mon, 11 Mar 2019 13:23:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727831AbfCKNXD (ORCPT ); Mon, 11 Mar 2019 09:23:03 -0400 Received: from mail-it1-f198.google.com ([209.85.166.198]:59896 "EHLO mail-it1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727412AbfCKNXB (ORCPT ); Mon, 11 Mar 2019 09:23:01 -0400 Received: by mail-it1-f198.google.com with SMTP id q192so4959304itb.9 for ; Mon, 11 Mar 2019 06:23:01 -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:in-reply-to:message-id:subject :from:to; bh=2EhzN5XbYHFQTtG1JAAIyXoSHbmRVeXXvwKjVmg8rcc=; b=Gqk+Lq6YnnNg5dvV9Sc5xT8OYRt97RuvhpSVCmatR0P40+vEW9MU2tVkkcz+TsajwS PR/rdWuETzgz8P3gYuH6LBknZHSQz52rFkszYsBP04KZRm0e0PK7zmW5UTksiLBlEC4a 1eYGNqtMUJjMV5P1TgYqtWh6eA95p5fpeNn9oKglsnpgVLY0+/zzMV3qwZ44oC0lMczc OdDuVV7qUHYUkwzLWREakjga6WKB1IafvIIJDFgubWv8WH+bjMF9eu4PHHoE8LTXkdg9 AGx1Th/+U5YpqSeFzHFMa9o/Sd5I2blpyJsl9FiyiUubdWi2GzHGAt7ubHW/4U0bWQco dF/Q== X-Gm-Message-State: APjAAAUun5ZJb/enelpsXfuAlvcC7PM3sJ10ZLBEGye12h99oEgj6hqL E71kccH8GULAOrCLqpC8eSAhSQuadvZNnpMFFBHn2QvSVqUa X-Google-Smtp-Source: APXvYqypCOSl+cov2ngYhPspk0BmvldODN0+SeLpdA8w10V4bqr7Cwo5XYDbOPfvWCaIkGf0DMHiWZlvE7rG1a1T81Xkd2e4eHX1 MIME-Version: 1.0 X-Received: by 2002:a5d:8b47:: with SMTP id c7mr19516661iot.21.1552310580995; Mon, 11 Mar 2019 06:23:00 -0700 (PDT) Date: Mon, 11 Mar 2019 06:23:00 -0700 In-Reply-To: <00000000000082477205811c029c@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c2ebc60583d178e5@google.com> Subject: Re: possible deadlock in io_submit_one From: syzbot To: adam.manzanares@wdc.com, avi@scylladb.com, bcrl@kvack.org, darrick.wong@oracle.com, gregkh@linuxfoundation.org, hch@lst.de, jmoyer@redhat.com, linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org syzbot has bisected this bug to: commit bfe4037e722ec672c9dafd5730d9132afeeb76e9 Author: Christoph Hellwig Date: Mon Jul 16 07:08:20 2018 +0000 aio: implement IOCB_CMD_POLL bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=108886bd200000 start commit: bfe4037e aio: implement IOCB_CMD_POLL git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=128886bd200000 console output: https://syzkaller.appspot.com/x/log.txt?x=148886bd200000 kernel config: https://syzkaller.appspot.com/x/.config?x=2e0064f906afee10 dashboard link: https://syzkaller.appspot.com/bug?extid=a3accb352f9c22041cfa userspace arch: amd64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=156479f8c00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=128c75c4c00000 Reported-by: syzbot+a3accb352f9c22041cfa@syzkaller.appspotmail.com Fixes: bfe4037e ("aio: implement IOCB_CMD_POLL")