linux-kernel - Re: next-20240826: arm: tinyconfig: mm/vma.h:184:26: error: 'USER_PGTABLES_CEILING' undeclared (first use in this function)

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Message-ID: <a35fh7ve7uaobipdhkcnjling2w2h2on4bwosgllhm73iirg4s@eppqfp7ehurf>
Date: Mon, 26 Aug 2024 10:41:53 -0400
From: "Liam R. Howlett" <Liam.Howlett@...cle.com>
To: Naresh Kamboju <naresh.kamboju@...aro.org>
Cc: linux-mm <linux-mm@...ck.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>, lkft-triage@...ts.linaro.org,
        Linux Regressions <regressions@...ts.linux.dev>
Subject: Re: next-20240826: arm: tinyconfig: mm/vma.h:184:26: error:
 'USER_PGTABLES_CEILING' undeclared (first use in this function)

* Naresh Kamboju <naresh.kamboju@...aro.org> [240826 08:37]:
> The arm tinyconfig and allnoconfig builds failed on today's Linux next-20240826
> due to following build warnings / errors.

Thanks for the report.

> 
> first seen on next-20240826.
>   Good: next-20240823
>   BAD:  next-20240826
> 
> Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
> 
> build log:
> --------
> 
> In file included from mm/internal.h:22,
>                  from mm/filemap.c:52:
> mm/vma.h: In function 'init_vma_munmap':
> mm/vma.h:184:26: error: 'USER_PGTABLES_CEILING' undeclared (first use
> in this function)
>   184 |         vms->unmap_end = USER_PGTABLES_CEILING;
>       |                          ^~~~~~~~~~~~~~~~~~~~~
> mm/vma.h:184:26: note: each undeclared identifier is reported only
> once for each function it appears in
> make[4]: *** [scripts/Makefile.build:244: mm/filemap.o] Error 1
> In file included from mm/internal.h:22,
>                  from mm/oom_kill.c:50:
> mm/vma.h: In function 'init_vma_munmap':
> mm/vma.h:184:26: error: 'USER_PGTABLES_CEILING' undeclared (first use
> in this function)
>   184 |         vms->unmap_end = USER_PGTABLES_CEILING;
>       |                          ^~~~~~~~~~~~~~~~~~~~~

Please see [1].

[1]. https://lore.kernel.org/all/7d0ea994-f750-49c5-b392-ae7117369cf3@lucifer.local/

> 
> Build Log links,
> --------
>  - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240826/testrun/24951924/suite/build/test/gcc-13-tinyconfig/log
> 
> Build failed comparison:
>  - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240826/testrun/24951940/suite/build/test/clang-18-tinyconfig/history/
> 
> metadata:
> ----
>   git describe: next-20240826
>   git repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next
>   git sha: 1ca4237ad9ce29b0c66fe87862f1da54ac56a1e8
>   kernel config:
> https://storage.tuxsuite.com/public/linaro/lkft/builds/2lC5HukjOlVYM52f7n4rm8EXOLG/config
>   build url: https://storage.tuxsuite.com/public/linaro/lkft/builds/2lC5HukjOlVYM52f7n4rm8EXOLG/
>   toolchain: clang-18 and gcc-13
>   config: tinyconfig and allnoconfig
> 
> Steps to reproduce:
> ---------
>  - tuxmake --runtime podman --target-arch arm --toolchain gcc-13
> --kconfig tinyconfig
> 
> --
> Linaro LKFT
> https://lkft.linaro.org