linux-kernel - Re: [RFC v1 0/3] Address potential user-after-free on module unload

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Message-ID: <CAGngYiUTBQ7Xqm8e-w=fn=8t8grLifsBcRzKEC4prW_+yOAK7w@mail.gmail.com>
Date:   Thu, 14 Feb 2019 10:23:12 -0500
From:   Sven Van Asbroeck <thesven73@...il.com>
To:     Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Kees Cook <keescook@...omium.org>, Tejun Heo <tj@...nel.org>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Sebastian Reichel <sre@...nel.org>,
        Greg KH <gregkh@...uxfoundation.org>
Subject: Re: [RFC v1 0/3] Address potential user-after-free on module unload

Hi Miguel,

On Wed, Feb 13, 2019 at 8:11 PM Miguel Ojeda
<miguel.ojeda.sandonis@...il.com> wrote:
>
> Indeed! Note that I didn't mean to say they are trivial issues or that
> the solution is simply to replace cancel_delayed_work() with the
> _sync() version in all cases -- only that it might be a good idea to
> suggest its existence (instead of only suggesting devm_, because in
> cases like drivers/auxdisplay/ht16k33.c it may be the simplest fix).
>

I will try to get your suggestion in, as I move forward with this
Coccinelle script.

Cheers,
Sven