Fwd: ./include/linux/mmzone.h:1735:2: error: #error Allocator MAX_ORDER exceeds SECTION_SIZE (v6.4-rc3 build regression)

Bagas Sanjaya
2023-05-24T10:58:17Z

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