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

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Date:   Thu, 7 Feb 2019 17:27:27 -0500
From:   Sven Van Asbroeck <thesven73@...il.com>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:     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

On Thu, Feb 7, 2019 at 5:21 PM Dmitry Torokhov
<dmitry.torokhov@...il.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.
[...]
> So in effect we do not actually leak work
> past driver remove().

That's expected. No Coccinelle script is perfect
(especially not my feeble attempts!)
so there will be false positives.