* [PATCH] riscv: Enable ELF-ASLR for riscv
@ 2020-07-09 4:38 guoren
2020-07-09 5:32 ` Alex Ghiti
0 siblings, 1 reply; 3+ messages in thread
From: guoren @ 2020-07-09 4:38 UTC (permalink / raw)
To: palmerdabbelt, paul.walmsley, anup, greentime.hu, zong.li, me,
bjorn.topel, atish.patra
Cc: Guo Ren, linux-kernel, linux-csky, guoren, Greentime Hu, linux-riscv
From: Guo Ren <guoren@linux.alibaba.com>
Let riscv enable randomizes the stack, heap and binary images of
ELF binaries. Seems it's ok at all after qemu & chip test and
there is no founded side effect.
So just simply select ARCH_HAS_ELF_RANDOMIZE :)
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Cc: Palmer Dabbelt <palmerdabbelt@google.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Zong Li <zong.li@sifive.com>
Cc: Greentime Hu <green.hu@gmail.com>
---
arch/riscv/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 91bfc6c..eed6647 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -20,6 +20,7 @@ config RISCV
select ARCH_HAS_GIGANTIC_PAGE
select ARCH_HAS_MMIOWB
select ARCH_HAS_PTE_SPECIAL
+ select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_SET_DIRECT_MAP
select ARCH_HAS_SET_MEMORY
select ARCH_HAS_STRICT_KERNEL_RWX if MMU
--
2.7.4
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^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] riscv: Enable ELF-ASLR for riscv
2020-07-09 4:38 [PATCH] riscv: Enable ELF-ASLR for riscv guoren
@ 2020-07-09 5:32 ` Alex Ghiti
2020-07-09 7:59 ` Guo Ren
0 siblings, 1 reply; 3+ messages in thread
From: Alex Ghiti @ 2020-07-09 5:32 UTC (permalink / raw)
To: guoren, palmerdabbelt, paul.walmsley, anup, greentime.hu,
zong.li, me, bjorn.topel, atish.patra
Cc: linux-riscv, Guo Ren, linux-kernel, linux-csky, Greentime Hu
Hi Guo,
Le 7/9/20 à 12:38 AM, guoren@kernel.org a écrit :
> From: Guo Ren <guoren@linux.alibaba.com>
>
> Let riscv enable randomizes the stack, heap and binary images of
> ELF binaries. Seems it's ok at all after qemu & chip test and
> there is no founded side effect.
>
> So just simply select ARCH_HAS_ELF_RANDOMIZE :)
>
> Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
> Cc: Palmer Dabbelt <palmerdabbelt@google.com>
> Cc: Paul Walmsley <paul.walmsley@sifive.com>
> Cc: Zong Li <zong.li@sifive.com>
> Cc: Greentime Hu <green.hu@gmail.com>
> ---
> arch/riscv/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index 91bfc6c..eed6647 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -20,6 +20,7 @@ config RISCV
> select ARCH_HAS_GIGANTIC_PAGE
> select ARCH_HAS_MMIOWB
> select ARCH_HAS_PTE_SPECIAL
> + select ARCH_HAS_ELF_RANDOMIZE
> select ARCH_HAS_SET_DIRECT_MAP
> select ARCH_HAS_SET_MEMORY
> select ARCH_HAS_STRICT_KERNEL_RWX if MMU
>
Actually it is already the case: ARCH_HAS_ELF_RANDOMIZE is already
selected by ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT.
Thanks,
Alex
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] riscv: Enable ELF-ASLR for riscv
2020-07-09 5:32 ` Alex Ghiti
@ 2020-07-09 7:59 ` Guo Ren
0 siblings, 0 replies; 3+ messages in thread
From: Guo Ren @ 2020-07-09 7:59 UTC (permalink / raw)
To: Alex Ghiti
Cc: Patrick Stählin, Guo Ren, Anup Patel, Palmer Dabbelt,
Linux Kernel Mailing List, linux-csky, Atish Patra, Greentime Hu,
Zong Li, Paul Walmsley, Greentime Hu, linux-riscv,
Björn Töpel
On Thu, Jul 9, 2020 at 1:32 PM Alex Ghiti <alex@ghiti.fr> wrote:
>
> Hi Guo,
>
> Le 7/9/20 à 12:38 AM, guoren@kernel.org a écrit :
> > From: Guo Ren <guoren@linux.alibaba.com>
> >
> > Let riscv enable randomizes the stack, heap and binary images of
> > ELF binaries. Seems it's ok at all after qemu & chip test and
> > there is no founded side effect.
> >
> > So just simply select ARCH_HAS_ELF_RANDOMIZE :)
> >
> > Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
> > Cc: Palmer Dabbelt <palmerdabbelt@google.com>
> > Cc: Paul Walmsley <paul.walmsley@sifive.com>
> > Cc: Zong Li <zong.li@sifive.com>
> > Cc: Greentime Hu <green.hu@gmail.com>
> > ---
> > arch/riscv/Kconfig | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> > index 91bfc6c..eed6647 100644
> > --- a/arch/riscv/Kconfig
> > +++ b/arch/riscv/Kconfig
> > @@ -20,6 +20,7 @@ config RISCV
> > select ARCH_HAS_GIGANTIC_PAGE
> > select ARCH_HAS_MMIOWB
> > select ARCH_HAS_PTE_SPECIAL
> > + select ARCH_HAS_ELF_RANDOMIZE
> > select ARCH_HAS_SET_DIRECT_MAP
> > select ARCH_HAS_SET_MEMORY
> > select ARCH_HAS_STRICT_KERNEL_RWX if MMU
> >
>
> Actually it is already the case: ARCH_HAS_ELF_RANDOMIZE is already
> selected by ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT.
Oops :P, Thx for correcting, abandon the patch.
--
Best Regards
Guo Ren
ML: https://lore.kernel.org/linux-csky/
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2020-07-09 5:32 ` Alex Ghiti
2020-07-09 7:59 ` Guo Ren
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