Re: Linux 6.2-rc1

[Max Filippov]

On Mon, Dec 26, 2022 at 12:44 PM Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
> xtensa:allmodconfig
>
> Building xtensa:allmodconfig ... failed
> --------------
> Error log:
> kernel/kcsan/kcsan_test.c: In function '__report_matches':
> kernel/kcsan/kcsan_test.c:257:1: error: the frame size of 1680 bytes is larger than 1536 bytes
>
> Bisect for both points to commit e240e53ae0abb08 ("mm, slub: add
> CONFIG_SLUB_TINY").  Reverting it on its own is not possible, but
> reverting the following two patches fixes the problem.
>
> 149b6fa228ed mm, slob: rename CONFIG_SLOB to CONFIG_SLOB_DEPRECATED
> e240e53ae0ab mm, slub: add CONFIG_SLUB_TINY
>
> Context: CONFIG_SLUB_TINY is enabled with allmodconfig builds.
> This enables some previously disabled configurations and disables
> some previously enabled configurations. Not sure if that is a good
> thing or a bad thing, but it does result in the above errors.

For xtensa I've posted the following fix:
https://lore.kernel.org/lkml/20221223074238.4092772-1-jcmvbkbc@xxxxxxxxx/
I suspect that previously KCSAN was disabled in allmodconfig builds for xtensa.

-- 
Thanks.
-- Max