Hi Thierry,
On 15 February 2016 at 20:17, Thierry Reding <thierry.reding@xxxxxxxxx> wrote:
> From: Thierry Reding <treding@xxxxxxxxxx>
>
> Changes introduced in the upstream version of libfdt pulled in by commit
> 91feabc2e224 ("scripts/dtc: Update to upstream commit b06e55c88b9b") use
> the strnlen() function, which isn't currently available to the EFI name-
> space. Add it to the EFI namespace to avoid a linker error.
>
> Cc: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
> Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
> Cc: Will Deacon <will.deacon@xxxxxxx>
> Cc: Rob Herring <robh@xxxxxxxxxx>
> Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
> ---
> arch/arm64/kernel/image.h | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm64/kernel/image.h b/arch/arm64/kernel/image.h
> index c9c62cab25a4..8a1978f4a555 100644
> --- a/arch/arm64/kernel/image.h
> +++ b/arch/arm64/kernel/image.h
> @@ -96,6 +96,8 @@ __efistub_strcmp = KALLSYMS_HIDE(__pi_strcmp);
> __efistub_strncmp = KALLSYMS_HIDE(__pi_strncmp);
> __efistub___flush_dcache_area = KALLSYMS_HIDE(__pi___flush_dcache_area);
>
> +__efistub_strnlen = KALLSYMS_HIDE(strnlen);
> +
To align with the existing code, we should use __pi_strnlen here, and
declare the asm version of strnlen with ENDPIPROC()
Thanks,
Ard.
> #ifdef CONFIG_KASAN
> __efistub___memcpy = KALLSYMS_HIDE(__pi_memcpy);
> __efistub___memmove = KALLSYMS_HIDE(__pi_memmove);
> --
> 2.7.1
>
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