linux-kernel - Re: [PATCH 0/6] driver core: Fix some issues related to device links

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]

Message-ID: <CAJZ5v0hsBNYZ7mu6SrhBY+LiOQZKz2K_3OtsCb9Jt8QR1YRhOA@mail.gmail.com>
Date:   Thu, 31 Jan 2019 11:09:51 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Daniel Vetter <daniel@...ll.ch>,
        Lukas Wunner <lukas@...ner.de>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Lucas Stach <l.stach@...gutronix.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>
Subject: Re: [PATCH 0/6] driver core: Fix some issues related to device links

On Thu, Jan 24, 2019 at 12:25 PM Rafael J. Wysocki <rjw@...ysocki.net> wrote:
>
> Hi Greg at al,
>
> Recently I have been looking at the device links code because of the
> recent discussion on possibly using them in the DRM subsystem (see for
> example https://marc.info/?l=linux-pm&m=154832771905309&w=2) and I have
> found a few issues in that code which should be addressed by this patch
> series.  Please refer to the patch changelogs for details.
>
> None of the problems addressed here should be manifesting themselves in
> mainline kernel today, but if there are more device links users in the
> future, they most likely will be encountered sooner or later.  Also they
> need to be fixed for the DRM use case to be supported IMO.
>
> This series does not fix all issues in device links that have become
> apparent (generally speaking, the idea of returning an existing link
> in case there is one already for the given consumer-supplier pair
> doesn't play well with stateful links and their flags), so there will
> be a follow-up series of patches to clean that up.  Still, I don't see
> a reason to sit on these fixes while working on the other patches, so
> here they go.

Any concerns regarding this lot?

[Please note that patch 5 in the series was replaced with the v2 at
https://patchwork.kernel.org/patch/10781205/]

If not, and if you don't mind, I would like to queue it up next week,
possibly along with the follow-up material posted on Monday
(https://lore.kernel.org/lkml/2405639.4es7pRLqn0@aspire.rjw.lan/) if
that is not problematic, so it gets some linux-next coverage before
the next merge window.

Cheers,
Rafael