linux-kernel - Re: [PATCH 2/5] blktrace: fix debugfs use after free

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Message-ID: <608dc241-2f87-27df-fd51-a1b91c7e4425@acm.org>
Date:   Tue, 14 Apr 2020 19:46:19 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     Luis Chamberlain <mcgrof@...nel.org>, axboe@...nel.dk,
        viro@...iv.linux.org.uk, gregkh@...uxfoundation.org,
        rostedt@...dmis.org, mingo@...hat.com, jack@...e.cz,
        ming.lei@...hat.com, nstange@...e.de, akpm@...ux-foundation.org
Cc:     mhocko@...e.com, yukuai3@...wei.com, linux-block@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-mm@...ck.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: [PATCH 2/5] blktrace: fix debugfs use after free

On 2020-04-13 21:18, Luis Chamberlain wrote:
> On commit 6ac93117ab00 ("blktrace: use existing disk debugfs directory")
> merged on v4.12 Omar fixed the original blktrace code for request-based
> drivers (multiqueue). This however left in place a possible crash, if you
> happen to abuse blktrace in a way it was not intended.

Reviewed-by: Bart Van Assche <bvanassche@....org>