On Thu, Nov 07, 2019 at 08:22:27AM +0800, kbuild test robot wrote:
> 
> FYI, we noticed a +3487177 bytes kernel size regression due to commit:
> 
> commit: e2f238f7d5a1fa69ff1884d37acf9a2a3a01b308 (configfs: calculate the depth of parent item)
>  

please provide the .config used for i386-tinyconfig to me.
I can't reproduce this issue with default 'tinyconfig'.

$ make mrproper
$ make tinyconfig
$ make

-rwxrwxr-x. 1 honli honli 1316992 Nov  7 02:43 vmlinux.no-patch
-rwxrwxr-x. 1 honli honli 1316992 Nov  7 02:45 vmlinux.patched

> 
> Details as below (size data is obtained by `nm --size-sort vmlinux`):
> 
> 26bc6721: Merge tag 'for-linus-2019-11-05' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
> e2f238f7: configfs: calculate the depth of parent item
> 
> +-------------------------------------------------------------------+----------+----------+---------+
> |                              symbol                               | 26bc6721 | e2f238f7 |  delta  |
> +-------------------------------------------------------------------+----------+----------+---------+
> | bzImage                                                           | 438880   | 1865264  | 1426384 |
> | nm.b.__log_buf                                                    | 0        | 1048576  | 1048576 |
                                                                                   ^^^^^^^
1048576 = 2 ^ 20, it seems 'CONFIG_LOG_BUF_SHIFT' is set in your .config
file.

thanks