linux-kernel - Re: [PATCH 1/4] ASoC: codec2codec: avoid invalid/double-free of pcm runtime

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 13 Feb 2020 14:37:18 +0100
From:   Jerome Brunet <jbrunet@...libre.com>
To:     Mark Brown <broonie@...nel.org>
Cc:     Samuel Holland <samuel@...lland.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Jonathan Corbet <corbet@....net>, alsa-devel@...a-project.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH 1/4] ASoC: codec2codec: avoid invalid/double-free of pcm runtime


On Thu 13 Feb 2020 at 12:37, Mark Brown <broonie@...nel.org> wrote:

> On Thu, Feb 13, 2020 at 09:37:18AM +0100, Jerome Brunet wrote:
>
>> This brings another question/problem:
>> A link which has failed in PMU, could try in PMD to hw_free/shutdown a
>> dai which has not gone through startup/hw_params, right ?
>
> I think so, yes.

Maybe this can be solved using the dai active counts which the
codec-to-codec event is not updating. I'll try to come up with
something.