linux-kernel - Re: [PATCH v4 00/17] ALSA: hda: cirrus: Add initial DSP support and firmware loading

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:   Mon, 30 May 2022 13:40:47 +0200
From:   Jaroslav Kysela <perex@...ex.cz>
To:     Takashi Iwai <tiwai@...e.de>,
        Charles Keepax <ckeepax@...nsource.cirrus.com>
Cc:     Vitaly Rodionov <vitalyr@...nsource.cirrus.com>,
        Takashi Iwai <tiwai@...e.com>, Mark Brown <broonie@...nel.org>,
        alsa-devel@...a-project.org, patches@...nsource.cirrus.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 00/17] ALSA: hda: cirrus: Add initial DSP support and
 firmware loading

On 30. 05. 22 13:07, Takashi Iwai wrote:

> And yet moreover, we'll need to consider some way for protecting
> against DoS-like behavior by frequent kctl changes.

I agree, but only the driver knows details about the kctl operation time and 
resource constraints. So the driver should implement a rate or i/o limit for 
those controls. We may offer helper functions in the ALSA core for this job 
(if required).

						Jaroslav

-- 
Jaroslav Kysela <perex@...ex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.