linux-kernel - Re: [PATCH 2/4] ARM: amba: Fix race condition with driver

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Message-ID: <CAMuHMdXqANJGm-vZjwMF0TYwWQcUe9F0v5aNSv_YQNoRZJzXmw@mail.gmail.com>
Date:   Mon, 5 Mar 2018 09:08:32 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Todd Kjos <tkjos@...roid.com>
Cc:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Russell King <linux@...linux.org.uk>,
        Antonios Motakis <a.motakis@...tualopensystems.com>,
        Adrian Salido <salidoa@...gle.com>,
        Sasha Levin <sasha.levin@...cle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        LKML <linux-kernel@...r.kernel.org>,
        stable <stable@...r.kernel.org>
Subject: Re: [PATCH 2/4] ARM: amba: Fix race condition with driver_override

Hi Todd,

On Fri, Mar 2, 2018 at 7:23 PM, Todd Kjos <tkjos@...roid.com> wrote:
> +stable
>
> what is the status of this patch? We'd like to get it into the android
> common branches to fix possible double free.

Thanks for your interest!

So far this patch (and the 3 others in the series) haven't received any
comments. If someone sends a Acked-by or Reviewed-by, I can submit them
to RMK's patch system.

Thanks!

> On Fri, Jan 19, 2018 at 7:24 AM, Geert Uytterhoeven
> <geert+renesas@...der.be> wrote:
>> The driver_override implementation is susceptible to a race condition
>> when different threads are reading vs storing a different driver
>> override.  Add locking to avoid this race condition.
>>
>> Cfr. commits 6265539776a0810b ("driver core: platform: fix race
>> condition with driver_override") and 9561475db680f714 ("PCI: Fix race
>> condition with driver_override").
>>
>> Fixes: 3cf385713460eb2b ("ARM: 8256/1: driver coamba: add device binding path 'driver_override'")
>> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds