linux-kernel - Re: [PATCH v2] selftests: exec: make binaries position independent

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Message-ID: <202404161027.63F4D4FDEB@keescook>
Date: Tue, 16 Apr 2024 10:28:02 -0700
From: Kees Cook <keescook@...omium.org>
To: Muhammad Usama Anjum <usama.anjum@...labora.com>
Cc: Eric Biederman <ebiederm@...ssion.com>, Shuah Khan <shuah@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Yang Yingliang <yangyingliang@...wei.com>, kernel@...labora.com,
	linux-mm@...ck.org, linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH v2] selftests: exec: make binaries position independent

On Tue, Apr 16, 2024 at 08:28:29PM +0500, Muhammad Usama Anjum wrote:
> The -static overrides the -pie and binaries aren't position independent
> anymore. Use -static-pie instead which would produce a static and
> position independent binary. This has been caught by clang's warnings:
> 
>   clang: warning: argument unused during compilation: '-pie'
>   [-Wunused-command-line-argument]
> 
> Tested with both gcc and clang after this change.
> 
> Fixes: 4d1cd3b2c5c1 ("tools/testing/selftests/exec: fix link error")
> Signed-off-by: Muhammad Usama Anjum <usama.anjum@...labora.com>

Thanks for this!

Reviewed-by: Kees Cook <keescook@...omium.org>

-- 
Kees Cook