linux-kernel - Re: [PATCH AUTOSEL 6.2 08/30] selftests/bpf: check that modifier resolves after pointer

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Message-ID: <CAN+4W8jAyJTdFL=tgp3wCpYAjGOs5ggo6vyOg8PbaW+tJP8TKA@mail.gmail.com>
Date:   Tue, 28 Mar 2023 11:18:27 +0100
From:   Lorenz Bauer <lmb@...valent.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Sasha Levin <sashal@...nel.org>, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org, Martin KaFai Lau <martin.lau@...nel.org>,
        ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        shuah@...nel.org, yhs@...com, eddyz87@...il.com, sdf@...gle.com,
        error27@...il.com, iii@...ux.ibm.com, memxor@...il.com,
        bpf@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 6.2 08/30] selftests/bpf: check that modifier
 resolves after pointer

On Mon, Mar 20, 2023 at 3:48 PM Greg KH <gregkh@...uxfoundation.org> wrote:
>
> Why would it break?  Is that because the test is buggy, or the kernel is
> buggy?

This test will be fine, but there have been several times when
selftests/bpf for stable kernel releases didn't actually compile due
to backported tests. This is because macros we're redefined, etc.
Unless those also get picked (seems like a sisyphean task) we'll keep
seeing broken selftests/bpf on stable.

Best
Lorenz