Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
MIME-Version: 1.0
References: <20200603114014.152292216@infradead.org> <20200603120037.GA2570@hirez.programming.kicks-ass.net>
 <20200603120818.GC2627@hirez.programming.kicks-ass.net> <CANpmjNOxLkqh=qpHQjUC_bZ0GCjkoJ4NxF3UuNGKhJSvcjavaA@mail.gmail.com>
 <20200603121815.GC2570@hirez.programming.kicks-ass.net>
In-Reply-To: <20200603121815.GC2570@hirez.programming.kicks-ass.net>
From:   Marco Elver <elver@google.com>
Date:   Wed, 3 Jun 2020 15:32:57 +0200
Message-ID: <CANpmjNPxMo0sNmkbMHmVYn=WJJwtmYR03ZtFDyPhmiMuR1ug=w@mail.gmail.com>
Subject: Re: [PATCH 0/9] x86/entry fixes
To:     Peter Zijlstra <peterz@infradead.org>
Cc:     Thomas Gleixner <tglx@linutronix.de>,
        "the arch/x86 maintainers" <x86@kernel.org>,
        "Paul E. McKenney" <paulmck@kernel.org>,
        kasan-dev <kasan-dev@googlegroups.com>,
        LKML <linux-kernel@vger.kernel.org>,
        Will Deacon <will@kernel.org>,
        Dmitry Vyukov <dvyukov@google.com>,
        Alexander Potapenko <glider@google.com>,
        Andrey Konovalov <andreyknvl@google.com>
Content-Type: text/plain; charset="UTF-8"
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Wed, 3 Jun 2020 at 14:18, Peter Zijlstra <peterz@infradead.org> wrote:
>
> On Wed, Jun 03, 2020 at 02:08:57PM +0200, Marco Elver wrote:
>
> > What is the .config you used? I somehow can't reproduce. I've applied
> > the patches on top of -tip/master.
>
> So tip/master, my patches, your patches, this series.
>
> $ make CC=/opt/llvm/bin/clang O=defconfig-build/ -j80 -s bzImage
>
> is what I used, with the below config.
>

Thanks, can reproduce now. So far I haven't found any indication that
there is a missing check in Clang's instrumentation passes somewhere.
I'm a bit suspicious because both Clang and GCC have this behaviour.
I'll continue looking.

Thanks,
-- Marco