netdev - Re: [TEST] TCP MD5 vs kmemleak

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Message-ID: <CAJwJo6bnh_2=Bg7jajQ3qJAErMegDjp0F-aQP7yCENf_zBiTaw@mail.gmail.com>
Date: Wed, 19 Jun 2024 01:33:36 +0100
From: Dmitry Safonov <0x7f454c46@...il.com>
To: paulmck@...nel.org, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>, rcu@...r.kernel.org
Subject: Re: [TEST] TCP MD5 vs kmemleak

On Tue, 18 Jun 2024 at 18:47, Paul E. McKenney <paulmck@...nel.org> wrote:
>
> On Tue, Jun 18, 2024 at 10:02:10AM -0700, Jakub Kicinski wrote:
> > On Tue, 18 Jun 2024 09:42:35 -0700 Paul E. McKenney wrote:
[..]
> >
> > Dmitry mentioned this commit, too, but we use the same config for MPTCP
> > tests, and while we repro TCP AO failures quite frequently, mptcp
> > doesn't seem to have failed once.
[..]
> >
> > To be clear I think Dmitry was suspecting kfree_rcu(), he mentioned
> > call_rcu() as something he was expecting to have a similar issue but
> > it in fact appeared immune.
>
> Whew!!!  ;-)

I'm sorry guys, that was me being inadequate.
That's a real issue, rather than a false-positive:
https://lore.kernel.org/netdev/20240619-tcp-ao-required-leak-v1-1-6408f3c94247@gmail.com/

Thanks,
             Dmitry