Re: fs/proc/base.c:1767:14-18: WARNING: casting value returned by memory allocation function to (char *) is useless.

[Hao Lee]

On Tue, Jan 25, 2022 at 10:36 AM kernel test robot <lkp@xxxxxxxxx> wrote:
>
> tree:   https://github.com/0day-ci/linux/commits/UPDATE-20220123-215907/Hao-Lee/proc-use-kmalloc-instead-of-__get_free_page-to-alloc-path-buffer/20220123-181005
> head:   98106e76de95ae9aefa914ec056448a5571155dc
> commit: 98106e76de95ae9aefa914ec056448a5571155dc proc: alloc PATH_MAX bytes for /proc/${pid}/fd/ symlinks
> date:   35 hours ago
> config: i386-randconfig-c001-20220124 (https://download.01.org/0day-ci/archive/20220125/202201250941.1xbLnDRA-lkp@xxxxxxxxx/config)
> compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
>
>
> cocci warnings: (new ones prefixed by >>)
> >> fs/proc/base.c:1767:14-18: WARNING: casting value returned by memory allocation function to (char *) is useless.

Hello, Alexey,

This patch has been added to the -mm tree, how do we deal with this problem...
Thanks.

>
> Please review and possibly fold the followup patch.
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx