Re: [PATCH V3] ZBOOT: fix stack protector in compressed boot phase

[Jiaxun Yang <jiaxun.yang@flygoat.com>]

在 2018-03-16五的 15:55 +0800，Huacai Chen写道：
> Call __stack_chk_guard_setup() in decompress_kernel() is too late
> that
> stack checking always fails for decompress_kernel() itself. So remove
> __stack_chk_guard_setup() and initialize __stack_chk_guard before we
> call decompress_kernel().
> 
> Original code comes from ARM but also used for MIPS and SH, so fix
> them
> together. If without this fix, compressed booting of these archs will
> fail because stack checking is enabled by default (>=4.16).
> 
> V2: Fix build on ARM.
> V3: Fix build on SuperH.
> 
> Cc: stable@vger.kernel.org
> Signed-off-by: Huacai Chen <chenhc@lemote.com>

Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

It works fine on MIPS(Loongson-3A3000) and arm (Allwinner H3)
platforms.

Thanks!
> ---
>  arch/arm/boot/compressed/head.S        | 4 ++++
>  arch/arm/boot/compressed/misc.c        | 7 -------
>  arch/mips/boot/compressed/decompress.c | 7 -------
>  arch/mips/boot/compressed/head.S       | 4 ++++
>  arch/sh/boot/compressed/head_32.S      | 8 ++++++++
>  arch/sh/boot/compressed/head_64.S      | 4 ++++
>  arch/sh/boot/compressed/misc.c         | 7 -------
>  7 files changed, 20 insertions(+), 21 deletions(-)
> 
-- 
Jiaxun Yang <jiaxun.yang@flygoat.com>