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Date:   Tue, 8 Dec 2020 07:32:14 +1100
From:   Stephen Rothwell <sfr@canb.auug.org.au>
To:     Marco Elver <elver@google.com>
Cc:     Hui Su <sh_def@163.com>, Alexander Potapenko <glider@google.com>,
        Dmitry Vyukov <dvyukov@google.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        kasan-dev <kasan-dev@googlegroups.com>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH][next] arm64: fix the mm build error in mm/kfence/core.c
Message-ID: <20201208073214.0d3bd2b8@canb.auug.org.au>
In-Reply-To: <CANpmjNOWpa17L7mjhKdaFjWYfAzy12NjXUDtuPHpzm808QApRg@mail.gmail.com>
References: <20201205172207.GA4097@rlk>
        <20201207082300.38f5207f@canb.auug.org.au>
        <CANpmjNPifOwd9w34dSJhsvmP2sUkKa0ESPiJ7gj+gUDffhPO3A@mail.gmail.com>
        <CANpmjNOWpa17L7mjhKdaFjWYfAzy12NjXUDtuPHpzm808QApRg@mail.gmail.com>
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Hi Marco,

On Mon, 7 Dec 2020 15:52:07 +0100 Marco Elver <elver@google.com> wrote:
>
> On Sun, 6 Dec 2020 at 23:08, Marco Elver <elver@google.com> wrote:
> > On Sun, 6 Dec 2020 at 22:23, Stephen Rothwell <sfr@canb.auug.org.au> wr=
ote: =20
> [...]
> > > > ../arch/arm64/include/asm/kfence.h:12:2: error: implicit declaratio=
n of
> > > > function =E2=80=98set_memory_valid=E2=80=99 [-Werror=3Dimplicit-fun=
ction-declaration]
> > > >    12 |  set_memory_valid(addr, 1, !protect);
> > > >       |  ^~~~~~~~~~~~~~~~
> > > > cc1: some warnings being treated as errors
> > > >
> > > > which introduced by commit d54febeba2ff ("kfence: use pt_regs to
> > > > generate stack trace on faults").
> > > >
> > > > Signed-off-by: Hui Su <sh_def@163.com>
> > > > ---
> > > >  arch/arm64/include/asm/kfence.h | 1 +
> > > >  1 file changed, 1 insertion(+) =20
> >
> > Thanks, but a patch for this is already in the -mm tree:
> > https://lore.kernel.org/mm-commits/20201205011409.o9PNsRntR%25akpm@linu=
x-foundation.org/
> >
> > Perhaps try the latest -next? =20
>=20
> Although I notice that patch somehow was dropped from -mm, or maybe
> I'm not looking hard enough?

It may just be that Andrew has not published that version of his patch
series yet.

--=20
Cheers,
Stephen Rothwell

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