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Subject: Re: Dangerous addr to ctrl dependency transformation in
 fs/nfs/delegation.c::nfs_server_return_marked_delegations()?
From:   =?utf-8?Q?Paul_Heidekr=C3=BCger?= <Paul.Heidekrueger@in.tum.de>
In-Reply-To: <CAKwvOdkrZbRTfrK_cFRseoONGi7qQ-_4vB=Zm9KH3Bb2KZ5tww@mail.gmail.com>
Date:   Wed, 22 Jun 2022 11:05:15 +0200
Cc:     "Jose E. Marchesi" <jemarch@gnu.org>,
        Alan Stern <stern@rowland.harvard.edu>,
        Andrea Parri <parri.andrea@gmail.com>,
        Will Deacon <will@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Boqun Feng <boqun.feng@gmail.com>,
        Nicholas Piggin <npiggin@gmail.com>,
        David Howells <dhowells@redhat.com>,
        Jade Alglave <j.alglave@ucl.ac.uk>,
        Luc Maranget <luc.maranget@inria.fr>,
        "Paul E. McKenney" <paulmck@kernel.org>,
        Akira Yokosawa <akiyks@gmail.com>,
        Daniel Lustig <dlustig@nvidia.com>,
        Joel Fernandes <joel@joelfernandes.org>,
        LKML <linux-kernel@vger.kernel.org>,
        linux-arch <linux-arch@vger.kernel.org>,
        clang-built-linux <llvm@lists.linux.dev>,
        Marco Elver <elver@google.com>,
        Charalampos Mainas <charalampos.mainas@gmail.com>,
        Pramod Bhatotia <pramod.bhatotia@in.tum.de>
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 <CAKwvOdkEULT_OOeaaCneJjbrE=O3kC8SMDs2thFa9gBfpuo2Jg@mail.gmail.com>
 <YmKF5tiH4W8AVdXe@Pauls-MacBook-Pro.local>
 <CAKwvOd=yLgY_0SwfBuOAzo=+zeWNMu4FMp65y0bi_RM+1G3NWQ@mail.gmail.com>
 <CAKwvOdkrZbRTfrK_cFRseoONGi7qQ-_4vB=Zm9KH3Bb2KZ5tww@mail.gmail.com>
To:     Nick Desaulniers <ndesaulniers@google.com>
Precedence: bulk


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> On 22. Jun 2022, at 00:05, Nick Desaulniers <ndesaulniers@google.com> =
wrote:
>=20
> On Tue, May 17, 2022 at 3:29 PM Nick Desaulniers
> <ndesaulniers@google.com> wrote:
>> On Fri, Apr 22, 2022 at 3:39 AM Paul Heidekr=C3=BCger
>> <paul.heidekrueger@in.tum.de> wrote:
>>> On Thu, Apr 14, 2022 at 02:21:25PM -0700, Nick Desaulniers wrote:
>>>> On Thu, Apr 7, 2022 at 8:22 AM Paul Heidekr=C3=BCger
>>>> <paul.heidekrueger@in.tum.de> wrote:
>>>>> Hi all,
>>>>>=20
>>>>> work on my dependency checker tool is progressing nicely, and it =
is
>>>>> flagging, what I believe is, a harmful addr to ctrl dependency
>>>>> transformation. For context, see [1] and [2]. I'm using the Clang
>>>>> compiler.
>>>>> [1]: =
https://linuxplumbersconf.org/event/7/contributions/821/attachments/598/10=
75/LPC_2020_--_Dependency_ordering.pdf
>>>>> [2]: =
https://lore.kernel.org/llvm/YXknxGFjvaB46d%2Fp@Pauls-MacBook-Pro/T/#u
>>>>=20
>>>> Hi Paul,
>>>> Thanks for the report and your (and your team's) work on this tool.
>>>> Orthogonal to your report, Jose (cc'ed) and I are currently in the
>>>> planning process to put together a Kernel+Toolchain microconference
>>>> track at Linux Plumbers Conference [0] this year (Sept 12-14) in
>>>> Dublin, Ireland. Would you or someone from your group be able and
>>>> interested in presenting more information about your work to an
>>>> audience of kernel and toolchain developers at such an event?
>>>>=20
>>>> Would others be interested in such a topic? (What do they say in
>>>> Starship Troopers...?...Would you like to know more?)
>>>>=20
>>>> [0] https://lpc.events/event/16/
>>>> --
>>>> Thanks,
>>>> ~Nick Desaulniers
>>>=20
>>> Hi Nick and Jose,
>>>=20
>>> Many thanks for inviting us! I would love to do a talk at LPC! =
Hopefully
>>> in person too.
>>>=20
>>> Given that there have been several talks around this topic at LPC
>>> already, it seems very fitting, and we'll hopefully have more to =
share
>>> by then. Actually we have more to share already :-)
>>>=20
>>> =
https://lore.kernel.org/all/YmKE%2FXgmRnGKrBbB@Pauls-MacBook-Pro.local/T/#=
u
>>>=20
>>> I assume we will have to submit an abstract soon?
>>=20
>> Yes, if you go to: https://lpc.events/event/16/abstracts/
>>=20
>> click "Submit new abstract" in the bottom right.
>>=20
>> Under the "Track" dropdown, please select "Toolchains Track."
>=20
> Hi Paul, we'll need all proposals soon.
> If you're still considering attending Linux Plumbers conf, please
> submit a proposal:
> https://lpc.events/event/16/abstracts/
> Please make sure to select "Toolchains Track" as the "Track" after
> clicking on "Submit new abstract."

Hi Nick,

Of course! :-)

Sorry for taking so long, and thanks for reminding! I was under the
impression the deadline was sometime mid-August and therefore hadn't
prioritised it high enough - sorry!

You'll have the proposal ASAP.

Many thanks,
Paul

>> --
>> Thanks,
>> ~Nick Desaulniers
>=20
>=20
>=20
> --=20
> Thanks,
> ~Nick Desaulniers

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