linux-kernel - Re: [PATCH v3 04/25] kcsan: Add core support for a subset of weak memory modeling

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Message-ID: <20211204011406.GU641268@paulmck-ThinkPad-P17-Gen-1>
Date:   Fri, 3 Dec 2021 17:14:06 -0800
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     Marco Elver <elver@...gle.com>
Cc:     Alexander Potapenko <glider@...gle.com>,
        Boqun Feng <boqun.feng@...il.com>,
        Borislav Petkov <bp@...en8.de>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Ingo Molnar <mingo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Waiman Long <longman@...hat.com>,
        Will Deacon <will@...nel.org>, kasan-dev@...glegroups.com,
        linux-arch@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, llvm@...ts.linux.dev, x86@...nel.org
Subject: Re: [PATCH v3 04/25] kcsan: Add core support for a subset of weak
 memory modeling

On Sat, Dec 04, 2021 at 12:45:30AM +0100, Marco Elver wrote:
> On Sat, 4 Dec 2021 at 00:42, Paul E. McKenney <paulmck@...nel.org> wrote:
> [...]
> > And to further extend this bug report, the following patch suppresses
> > the error.
> >
> >                                                         Thanx, Paul
> >
> > ------------------------------------------------------------------------
> >
> > commit d157b802f05bd12cf40bef7a73ca6914b85c865e
> > Author: Paul E. McKenney <paulmck@...nel.org>
> > Date:   Fri Dec 3 15:35:29 2021 -0800
> >
> >     kcsan: selftest: Move test spinlock to static global
> 
> Indeed, that will fix the selftest. The kcsan_test has the same
> problem (+1 extra problem).
> 
> We raced sending the fix. :-)
> I hope this patch works for you:
> https://lkml.kernel.org/r/20211203233817.2815340-1-elver@google.com

I replaced my patch with yours and am starting up testing, thank you!

							Thanx, Paul