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Date:   Wed, 9 Dec 2020 21:33:52 +1100
From:   Stephen Rothwell <sfr@canb.auug.org.au>
To:     Andrew Morton <akpm@linux-foundation.org>
Cc:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux Next Mailing List <linux-next@vger.kernel.org>,
        Kees Cook <keescook@chromium.org>,
        Michael Ellerman <mpe@ellerman.id.au>,
        PowerPC <linuxppc-dev@lists.ozlabs.org>,
        Mathieu Malaterre <malat@debian.org>,
        Nicholas Piggin <npiggin@gmail.com>
Subject: Re: linux-next: build warning after merge of the akpm tree
Message-ID: <20201209213352.15487d56@canb.auug.org.au>
In-Reply-To: <20201208230157.42c42789@canb.auug.org.au>
References: <20201204210000.660293c6@canb.auug.org.au>
        <20201208230157.42c42789@canb.auug.org.au>
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Hi all,

On Tue, 8 Dec 2020 23:01:57 +1100 Stephen Rothwell <sfr@canb.auug.org.au> w=
rote:
>
> I will try the following patch tomorrow:
>=20
> From: Stephen Rothwell <sfr@canb.auug.org.au>
> Date: Tue, 8 Dec 2020 22:58:24 +1100
> Subject: [PATCH] powerpc: Add .data..Lubsan_data*/.data..Lubsan_type* sec=
tions explicitly
>=20
> Similarly to commit
>=20
>   beba24ac5913 ("powerpc/32: Add .data..Lubsan_data*/.data..Lubsan_type* =
sections explicitly")
>=20
> since CONFIG_UBSAN bits can now be enabled for all*config.
>=20
> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
> ---
>  arch/powerpc/kernel/vmlinux.lds.S | 4 ++++
>  1 file changed, 4 insertions(+)
>=20
> diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmli=
nux.lds.S
> index 3b4c26e94328..0318ba436f34 100644
> --- a/arch/powerpc/kernel/vmlinux.lds.S
> +++ b/arch/powerpc/kernel/vmlinux.lds.S
> @@ -296,6 +296,10 @@ SECTIONS
>  #else
>  	.data : AT(ADDR(.data) - LOAD_OFFSET) {
>  		DATA_DATA
> +#ifdef CONFIG_UBSAN
> +		*(.data..Lubsan_data*)
> +		*(.data..Lubsan_type*)
> +#endif
>  		*(.data.rel*)
>  		*(.toc1)
>  		*(.branch_lt)
> --=20
> 2.29.2

This got rid of all the warnings.

--=20
Cheers,
Stephen Rothwell

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