linux-kernel - Re: [RFC 2/3] blktrace: fix debugfs use after free

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Message-ID: <CAB=NE6VJW4TiPHSqr8GXQ326WCbFa_rgT6kKz0bHus6i0Coz4Q@mail.gmail.com>
Date:   Tue, 7 Apr 2020 02:15:03 -0600
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     Nicolai Stange <nstange@...e.de>
Cc:     Bart Van Assche <bvanassche@....org>,
        Eric Sandeen <sandeen@...deen.net>,
        Jens Axboe <axboe@...nel.dk>,
        Al Viro <viro@...iv.linux.org.uk>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>, Jan Kara <jack@...e.cz>,
        Ming Lei <ming.lei@...hat.com>, Michal Hocko <mhocko@...e.com>,
        linux-block@...r.kernel.org,
        Linux FS Devel <linux-fsdevel@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Omar Sandoval <osandov@...com>,
        Hannes Reinecke <hare@...e.com>,
        Michal Hocko <mhocko@...nel.org>,
        syzbot+603294af2d01acfdd6da@...kaller.appspotmail.com
Subject: Re: [RFC 2/3] blktrace: fix debugfs use after free

On Mon, Apr 6, 2020 at 9:19 AM Luis Chamberlain <mcgrof@...nel.org> wrote:
>
> On Mon, Apr 06, 2020 at 11:18:13AM +0200, Nicolai Stange wrote:
> > Bart Van Assche <bvanassche@....org> writes:
>
> > So I'd suggest to drop patch [3/3] from this series and modify this
> > patch [2/3] here to move the blk_q_debugfs_unregister(q) invocation from
> > __blk_release_queue() to blk_unregister_queue() instead.
>
> I'll take a stab.

That didn't work. I'll look for alternatives.

  Luis