linux-kernel - Re: [PATCH -tip v3 05/11] kcsan: Remove 'noinline' from __no_kcsan_or

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Date:   Fri, 29 May 2020 20:59:23 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Marco Elver <elver@...gle.com>
Cc:     "Paul E. McKenney" <paulmck@...nel.org>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Alexander Potapenko <glider@...gle.com>,
        Andrey Konovalov <andreyknvl@...gle.com>,
        kasan-dev <kasan-dev@...glegroups.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>, Will Deacon <will@...nel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>,
        Borislav Petkov <bp@...en8.de>
Subject: Re: [PATCH -tip v3 05/11] kcsan: Remove 'noinline' from
 __no_kcsan_or_inline

On Fri, May 29, 2020 at 08:36:56PM +0200, Marco Elver wrote:

> > +/* Section for code which can't be instrumented at all */
> > +#define noinstr                                                                \
> > +       noinline notrace __attribute((__section__(".noinstr.text"))) __no_kcsan
> > +
> 
> Will this eventually need __no_sanitize_address?

Yes, and __no_sanitize_undefined and whatever else there is.

https://lkml.kernel.org/r/20200529171104.GD706518@hirez.programming.kicks-ass.net


> Acked -- if you send a patch, do split the test-related change, so
> that Paul can apply it to the test which is currently only in -rcu.

Ok, I'll try not forget over the weekend ;-)