linux-kernel - Re: [PATCH v7 5/8] loop: be paranoid on exit and prevent new additions / removals

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Message-ID: <SN4PR0401MB35982B3522B95FADDD06DC4C9B940@SN4PR0401MB3598.namprd04.prod.outlook.com>
Date:   Tue, 23 Jun 2020 17:05:01 +0000
From:   Johannes Thumshirn <Johannes.Thumshirn@....com>
To:     Luis Chamberlain <mcgrof@...nel.org>,
        Bart Van Assche <bvanassche@....org>
CC:     "axboe@...nel.dk" <axboe@...nel.dk>,
        "viro@...iv.linux.org.uk" <viro@...iv.linux.org.uk>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "rostedt@...dmis.org" <rostedt@...dmis.org>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "jack@...e.cz" <jack@...e.cz>,
        "ming.lei@...hat.com" <ming.lei@...hat.com>,
        "nstange@...e.de" <nstange@...e.de>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "mhocko@...e.com" <mhocko@...e.com>,
        "yukuai3@...wei.com" <yukuai3@...wei.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Christoph Hellwig <hch@....de>
Subject: Re: [PATCH v7 5/8] loop: be paranoid on exit and prevent new
 additions / removals

On 22/06/2020 14:27, Luis Chamberlain wrote:
[...]> If you run run_0004.sh from break-blktrace [0]. Even with all my patches
> merged we still run into this. And so the bug lies within the block
> layer or on the driver. I haven't been able to find the issue yet.
> 
> [0] https://github.com/mcgrof/break-blktrace

Would it be a good idea to merge this into blktests? Maybe start a blktrace 
section for it, which could host other regression test for blktrace.

Thoughts?