linux-kernel - Re: Namespaced network devices not cleaned up properly after execution of pmtu.sh kernel selftest

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Message-ID: <CAHTA-uYxSzp8apoZhh_W=TLFA451uc=Eb+_X4VEEVVZNGHaGjw@mail.gmail.com>
Date: Mon, 16 Sep 2024 14:25:49 -0500
From: Mitchell Augustin <mitchell.augustin@...onical.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Paolo Abeni <pabeni@...hat.com>, Jiri Pirko <jiri@...nulli.us>, 
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>, Lorenzo Bianconi <lorenzo@...nel.org>, 
	Daniel Borkmann <daniel@...earbox.net>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Jacob Martin <jacob.martin@...onical.com>, dann frazier <dann.frazier@...onical.com>
Subject: Re: Namespaced network devices not cleaned up properly after
 execution of pmtu.sh kernel selftest

Linking in this thread as well - I submitted a patch to net-next with
a reproducer for just this bug. It works reliably on Grace/Grace on
v6.11 (and prior kernels already known to be affected), but I have not
had a chance to test it on other platforms yet. Let me know if I need
to adjust anything and whether it reproduces the bug on your machines.

Patch w/ reproducer:
https://lore.kernel.org/all/20240916191857.1082092-1-mitchell.augustin@canonical.com/

Thanks!

On Fri, Sep 13, 2024 at 1:59 PM Mitchell Augustin
<mitchell.augustin@...onical.com> wrote:
>
> > Sorry, I missed that you identified the test case.
>
> All good!
>
> I will still plan to turn the reproducer for this bug into its own
> regression test. I think there would still be value in having an
> individual case that can more reliably trigger this specific issue.
>
> Thanks,
>
> On Fri, Sep 13, 2024 at 1:51 PM Jakub Kicinski <kuba@...nel.org> wrote:
> >
> > On Fri, 13 Sep 2024 08:45:22 -0500 Mitchell Augustin wrote:
> > > Executing ./pmtu.sh pmtu_ipv6_ipv6_exception manually will only
> > > trigger the pmtu_ipv6_ipv6_exception sub-case
> >
> > Sorry, I missed that you identified the test case.
> > The split of the test is quite tangential, then.
>
>
>
> --
> Mitchell Augustin
> Software Engineer - Ubuntu Partner Engineering
> Email:mitchell.augustin@...onical.com
> Location:Illinois, United States of America
>
>
> canonical.com
> ubuntu.com



-- 
Mitchell Augustin
Software Engineer - Ubuntu Partner Engineering