linux-kernel - Fwd: ./include/linux/mmzone.h:1735:2: error: #error Allocator MAX_ORDER exceeds SECTION

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Message-ID: <2a1cd5e6-01f7-66f9-1f9d-c655cc3f919b@gmail.com>
Date:   Wed, 24 May 2023 17:58:07 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PowerPC <linuxppc-dev@...ts.ozlabs.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        Linux Regressions <regressions@...ts.linux.dev>
Cc:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Michael Ellerman <mpe@...erman.id.au>, Zi Yan <ziy@...dia.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        doru iorgulescu <doru.iorgulescu1@...il.com>,
        Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Fabiano Rosas <farosas@...ux.ibm.com>,
        Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
        Disha Goel <disgoel@...ux.vnet.ibm.com>
Subject: Fwd: ./include/linux/mmzone.h:1735:2: error: #error Allocator
 MAX_ORDER exceeds SECTION_SIZE (v6.4-rc3 build regression)

Hi,

I notice a powerpc[64?] build regression on Bugzilla [1]. Quoting from it:

>  CC      arch/powerpc/kernel/asm-offsets.s
> In file included from ./include/linux/gfp.h:7,
>                 from ./include/linux/xarray.h:15,
>                 from ./include/linux/list_lru.h:14,
>                 from ./include/linux/fs.h:13,
>                 from ./include/linux/compat.h:17,
>                 from arch/powerpc/kernel/asm-offsets.c:12:
> ./include/linux/mmzone.h:1735:2: error: #error Allocator MAX_ORDER exceeds SECTION_SIZE
> 1735 | #error Allocator MAX_ORDER exceeds SECTION_SIZE
>      |  ^~~~~
> make[5]: *** [scripts/Makefile.build:114: arch/powerpc/kernel/asm-offsets.s] Error 1

Apparently removing the errored line solves the problem for the reporter
(the attached dmesg on [2] looks fine at a glance).

Anyway, I'm adding it to regzbot:

#regzbot introduced: 23baf831a32c04f https://bugzilla.kernel.org/show_bug.cgi?id=217477
#regzbot title: Allocator MAX_ORDER exceeds SECTION_SIZE caused by MAX_ORDER redefinition

Thanks.

[1]: https://bugzilla.kernel.org/show_bug.cgi?id=217477
[2]: https://bugzilla.kernel.org/show_bug.cgi?id=217477#c1

-- 
An old man doll... just what I always wanted! - Clara