linux-kernel - Re: [PATCH 00/11] Introduce Simple atomic and non-atomic counters

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Message-ID: <202009260920.DC9C2743@keescook>
Date:   Sat, 26 Sep 2020 09:22:46 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Shuah Khan <skhan@...uxfoundation.org>
Cc:     corbet@....net, gregkh@...uxfoundation.org, shuah@...nel.org,
        rafael@...nel.org, johannes@...solutions.net, lenb@...nel.org,
        james.morse@....com, tony.luck@...el.com, bp@...en8.de,
        arve@...roid.com, tkjos@...roid.com, maco@...roid.com,
        joel@...lfernandes.org, christian@...uner.io, hridya@...gle.com,
        surenb@...gle.com, minyard@....org, arnd@...db.de,
        mchehab@...nel.org, rric@...nel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-acpi@...r.kernel.org, devel@...verdev.osuosl.org,
        openipmi-developer@...ts.sourceforge.net,
        linux-edac@...r.kernel.org
Subject: Re: [PATCH 00/11] Introduce Simple atomic and non-atomic counters

On Fri, Sep 25, 2020 at 05:47:14PM -0600, Shuah Khan wrote:
> This patch series is a result of discussion at the refcount_t BOF
> the Linux Plumbers Conference. In this discussion, we identified
> a need for looking closely and investigating atomic_t usages in
> the kernel when it is used strictly as a counter without it
> controlling object lifetimes and state changes.

BTW, I realized the KSPP issue tracker hadn't broken this task out of
the refcount_t conversion issue[1] into a separate issue, so I've created
it now: https://github.com/KSPP/linux/issues/106

-Kees

[1] https://github.com/KSPP/linux/issues/104

-- 
Kees Cook