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 BFED8C10F0E for ; Mon, 15 Apr 2019 18:07:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8E783218A1 for ; Mon, 15 Apr 2019 18:07:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728033AbfDOSHC (ORCPT ); Mon, 15 Apr 2019 14:07:02 -0400 Received: from mail-it1-f198.google.com ([209.85.166.198]:58368 "EHLO mail-it1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728031AbfDOSHC (ORCPT ); Mon, 15 Apr 2019 14:07:02 -0400 Received: by mail-it1-f198.google.com with SMTP id j203so17042905itb.8 for ; Mon, 15 Apr 2019 11:07:01 -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=sWDXitSXlziTm+++5hupMV/gNlZiFqZLcHdxBDIQI/g=; b=jAH3RBh+rPMp0mriDF5R8d4SrpO5J7bA4Z9K8pbnDGblPQvVP4lNT8m10Kv9bPbolS LjbE9sBjDf/IEtyi0Rdmbi38n8+6mhv0uBbiUNdhUM8mZttUfi/yunxM2JKlUcDWi0pF KQSKoX8IEZZXt407NcBupkGtPviIf3ScoqEluKxnsOdpFSbQiSOJKbcCNgq1jLjr3aCS ZVkdmAP+Lxv7DHzuoxHCBryglXD0zWYjd5Zw1PMHth75QBj/KIST9U5ftdk8Z9hovkWn u58aYLS0JPDvVEP1WEl6xw/fOJSpOzWudcWiyu8WQFKjYAD5z3aRS8gpEJIJSz4unn4p p58Q== X-Gm-Message-State: APjAAAWFTQ1tEKbX3DvmFiz0eRvYBvjjn4CCIcefmSNvD44sD9jEk0wv E0RhuEEBM+/JAdPUNAW8NUv4LQEKyx0RhtiJC6Hyfg3kLno9 X-Google-Smtp-Source: APXvYqx0gY6g+2OoPZQ584Plr9254eaEc4NfCwE81pXgQZQ90f7wBQk1ajxCYplrhDsHPSEaMJ4M0gcCIUSpM+gPrC1Hij3C9kuO MIME-Version: 1.0 X-Received: by 2002:a24:4155:: with SMTP id x82mr6251777ita.34.1555351620851; Mon, 15 Apr 2019 11:07:00 -0700 (PDT) Date: Mon, 15 Apr 2019 11:07:00 -0700 In-Reply-To: <0000000000009c60fe058665c584@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000dca3e3058695845d@google.com> Subject: Re: INFO: task hung in __io_uring_register From: syzbot To: axboe@kernel.dk, hare@suse.com, linux-block@vger.kernel.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-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org syzbot has bisected this bug to: commit 6c271ce2f1d572f7fa225700a13cfe7ced492434 Author: Jens Axboe Date: Thu Jan 10 18:22:30 2019 +0000 io_uring: add submission polling bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=161ab467200000 start commit: dc4060a5 Linux 5.1-rc5 git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=151ab467200000 console output: https://syzkaller.appspot.com/x/log.txt?x=111ab467200000 kernel config: https://syzkaller.appspot.com/x/.config?x=856fc6d0fbbeede9 dashboard link: https://syzkaller.appspot.com/bug?extid=16dc03452dee970a0c3e userspace arch: i386 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14eb47ed200000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=112175dd200000 Reported-by: syzbot+16dc03452dee970a0c3e@syzkaller.appspotmail.com Fixes: 6c271ce2f1d5 ("io_uring: add submission polling") For information about bisection process see: https://goo.gl/tpsmEJ#bisection