linux-kernel - Re: [tip:sched/core 7/28] rseq.c:139:37: error: 'AT_RSEQ_ALIGN' undeclared; did you mean 'R_SH

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Date:   Mon, 16 Jan 2023 16:38:38 -0700
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        kernel test robot <lkp@...el.com>,
        Shuah Khan <shuah@...nel.org>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        x86@...nel.org, Peter Zijlstra <peterz@...radead.org>,
        linux-kselftest@...r.kernel.org,
        Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [tip:sched/core 7/28] rseq.c:139:37: error: 'AT_RSEQ_ALIGN'
 undeclared; did you mean 'R_SH_ALIGN'?

On 1/16/23 13:18, Mathieu Desnoyers wrote:
> On 2023-01-16 14:40, kernel test robot wrote:
>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core
>> head:   79ba1e607d68178db7d3fe4f6a4aa38f06805e7b
>> commit: 03f5c0272d1b59343144e199becc911dae52c37e [7/28] selftests/rseq: Use ELF auxiliary vector for extensible rseq
>> compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
>> reproduce:
>>          # https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=03f5c0272d1b59343144e199becc911dae52c37e
>>          git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
>>          git fetch --no-tags tip sched/core
>>          git checkout 03f5c0272d1b59343144e199becc911dae52c37e
>>          make O=/tmp/kselftest headers
>>          make O=/tmp/kselftest -C tools/testing/selftests
>>
>> If you fix the issue, kindly add following tag where applicable
>> | Reported-by: kernel test robot <lkp@...el.com>
> 
> In order to fix this, I need to change -I../../../../usr/include/ for $(KHDR_INCLUDES) in tools/testing/selftests/rseq/Makefile
> 
> I can find 25 odd uses of the same pattern in the kernel selftests. Should I fix them all in one go ?

kselftest build depends on headers installed in the root directory.
The main makefile enforces this dependency. If this test is being
built without installing headers by itself, I think the scripts that
build individual tests have to makes sure headers are installed first.

thanks,
-- Shuah