linux-kernel - Re: [PATCH v6 5/5] selftests/mm: add UFFDIO

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Message-ID: <6a34b0c9-e084-4928-b239-7af01c8d4479@sirena.org.uk>
Date:   Mon, 11 Dec 2023 12:24:46 +0000
From:   Mark Brown <broonie@...nel.org>
To:     David Hildenbrand <david@...hat.com>
Cc:     Suren Baghdasaryan <surenb@...gle.com>, akpm@...ux-foundation.org,
        viro@...iv.linux.org.uk, brauner@...nel.org, shuah@...nel.org,
        aarcange@...hat.com, lokeshgidra@...gle.com, peterx@...hat.com,
        ryan.roberts@....com, hughd@...gle.com, mhocko@...e.com,
        axelrasmussen@...gle.com, rppt@...nel.org, willy@...radead.org,
        Liam.Howlett@...cle.com, jannh@...gle.com, zhangpeng362@...wei.com,
        bgeffon@...gle.com, kaleshsingh@...gle.com, ngeoffray@...gle.com,
        jdduke@...gle.com, linux-mm@...ck.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, kernel-team@...roid.com
Subject: Re: [PATCH v6 5/5] selftests/mm: add UFFDIO_MOVE ioctl test

On Mon, Dec 11, 2023 at 01:03:27PM +0100, David Hildenbrand wrote:
> On 11.12.23 12:15, Mark Brown wrote:

> > This is linux-next.  I pasted the commands used to build and sent links
> > to a full build log in the original report.

> Probably also related to "make headers-install":

> https://lkml.kernel.org/r/20231209020144.244759-1-jhubbard@nvidia.com

> The general problem is that some mm selftests are currently not written in
> way that allows them to compile with old linux headers. That's why the build
> fails if "make headers-install" was not executed, but it does not fail if
> "make headers-install" was once upon a time executed, but the headers are
> outdated.

Oh, it's obviously the new headers not being installed.  The builds
where I'm seeing the problem (my own and KernelCI's) are all fresh
containers so there shouldn't be any stale headers lying around.

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