linux-kernel - Re: [PATCH v3 0/3] drivers: base: Add tests showing devm handling inconsistencies

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: <2023073131-glimmer-both-05b6@gregkh>
Date:   Mon, 31 Jul 2023 09:28:47 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Maxime Ripard <mripard@...nel.org>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Brendan Higgins <brendan.higgins@...ux.dev>,
        David Gow <davidgow@...gle.com>,
        linux-kselftest@...r.kernel.org, kunit-dev@...glegroups.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/3] drivers: base: Add tests showing devm handling
 inconsistencies

On Mon, Jul 31, 2023 at 08:34:03AM +0200, Maxime Ripard wrote:
> On Thu, Jul 20, 2023 at 02:45:06PM +0200, Maxime Ripard wrote:
> > Hi,
> > 
> > This follows the discussion here:
> > https://lore.kernel.org/linux-kselftest/20230324123157.bbwvfq4gsxnlnfwb@houat/
> > 
> > This shows a couple of inconsistencies with regard to how device-managed
> > resources are cleaned up. Basically, devm resources will only be cleaned up
> > if the device is attached to a bus and bound to a driver. Failing any of
> > these cases, a call to device_unregister will not end up in the devm
> > resources being released.
> > 
> > We had to work around it in DRM to provide helpers to create a device for
> > kunit tests, but the current discussion around creating similar, generic,
> > helpers for kunit resumed interest in fixing this.
> > 
> > This can be tested using the command:
> > ./tools/testing/kunit/kunit.py run --kunitconfig=drivers/base/test/
> > 
> > I added the fix David suggested back in that discussion which does fix
> > the tests. The SoB is missing, since David didn't provide it back then.
> > 
> > Let me know what you think,
> > Maxime
> > 
> > Signed-off-by: Maxime Ripard <mripard@...nel.org>
> 
> Ping?

It's in my review queue, still trying to catch up...