linux-kernel - Re: [PATCH v2] powerpc/vdso: link with -z noexecstack

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Date:   Fri, 09 Sep 2022 22:07:00 +1000
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Nicholas Piggin <npiggin@...il.com>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] powerpc/vdso: link with -z noexecstack

On Fri, 2 Sep 2022 17:25:24 +0200, Christophe Leroy wrote:
> With recent binutils, the following warning appears:
> 
>   VDSO32L arch/powerpc/kernel/vdso/vdso32.so.dbg
> /opt/gcc-12.2.0-nolibc/powerpc64-linux/bin/../lib/gcc/powerpc64-linux/12.2.0/../../../../powerpc64-linux/bin/ld: warning: arch/powerpc/kernel/vdso/getcpu-32.o: missing .note.GNU-stack section implies executable stack
> /opt/gcc-12.2.0-nolibc/powerpc64-linux/bin/../lib/gcc/powerpc64-linux/12.2.0/../../../../powerpc64-linux/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
> 
> To avoid that, explicitely tell the linker we don't
> want executable stack.
> 
> [...]

Applied to powerpc/next.

[1/1] powerpc/vdso: link with -z noexecstack
      https://git.kernel.org/powerpc/c/1d53c0192b15f42129a3dbbbfa05637bcf781a3e

cheers