linux-kernel - Re: progs/test_ksyms_btf.c:37:21: error: no member named 'cpu' in 'struct rq'

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Date:   Sat, 29 Oct 2022 15:04:25 -0700
From:   Andres Freund <andres@...razel.de>
To:     kernel test robot <lkp@...el.com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: progs/test_ksyms_btf.c:37:21: error: no member named 'cpu' in
 'struct rq'

Hi,

On 2022-10-27 05:02:14 +0800, kernel test robot wrote:
> First bad commit (maybe != root cause):
> 
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   98555239e4c3aab1810d84073166eef6d54eeb3d
> commit: 600b7b26c07a070d0153daa76b3806c1e52c9e00 tools bpftool: Fix compilation error with new binutils
> date:   3 months ago
> compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
> reproduce:
>         # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=600b7b26c07a070d0153daa76b3806c1e52c9e00
>         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>         git fetch --no-tags linus master
>         git checkout 600b7b26c07a070d0153daa76b3806c1e52c9e00
>         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>
> 
> All errors (new ones prefixed by >>):
> 
> >> progs/test_ksyms_btf.c:37:21: error: no member named 'cpu' in 'struct rq'
>                    out__rq_cpu = rq->cpu;
>                                  ~~  ^
>    progs/test_ksyms_btf.c:44:27: error: no member named 'cpu' in 'struct rq'
>                    out__cpu_0_rq_cpu = rq->cpu;
>                                        ~~  ^
>    progs/test_ksyms_btf.c:48:25: error: no member named 'cpu' in 'struct rq'
>            out__this_rq_cpu = rq->cpu;
>                               ~~  ^
>    3 errors generated.
> --
> >> progs/test_ksyms_btf_null_check.c:25:26: error: no member named 'cpu' in 'struct rq'
>                    *(volatile int *)(&rq->cpu);
>                                       ~~  ^
>    1 error generated.
> --
> >> progs/test_ksyms_weak.c:41:29: error: no member named 'cpu' in 'struct rq'
>                    out__existing_typed = rq->cpu;
>                                          ~~  ^
>    1 error generated.

I tried to reproduce this, without success. And it's not really clear to me
how it could be related to the change either...

Greetings,

Andres Freund