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From:   Sven Van Asbroeck <thesven73@gmail.com>
Date:   Thu, 7 Feb 2019 17:32:05 -0500
Message-ID: <CAGngYiWBdXc0VzpjBQmVyKi+E2rVaO2WsoiPLho0bxHnrdiDKw@mail.gmail.com>
Subject: Re: [RFC v1 0/3] Address potential user-after-free on module unload
To:     Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc:     Kees Cook <keescook@chromium.org>, Tejun Heo <tj@kernel.org>,
        Lai Jiangshan <jiangshanlai@gmail.com>,
        LKML <linux-kernel@vger.kernel.org>,
        Sebastian Reichel <sre@kernel.org>,
        Greg KH <gregkh@linuxfoundation.org>
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On Thu, Feb 7, 2019 at 5:21 PM Dmitry Torokhov
<dmitry.torokhov@gmail.com> wrote:
>
> > ./drivers//input/keyboard/matrix_keypad.c:512:1-18: missing clean-up
> > of INIT_WORK/INIT_DELAYED_WORK initialized here
>
> This is not as simple.
>

PS If you change
flush_work(&keypad->work.work);
to
flush_delayed_work(&keypad->work);

then the Coccinelle script works correctly, and does not flag
this driver.