[vbabka-slab:slab/for-7.0/obj_metadata 9/10] Warning: mm/slub.c:7013 function parameter 'objp' not described in 'ksize'

[vbabka-slab:slab/for-7.0/obj_metadata 9/10] Warning: mm/slub.c:7013 function parameter 'objp' not described in 'ksize'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab.git slab/for-7.0/obj_metadata
head:   a4e5702b7bb846cf50d2917cadf2289c25720812
commit: 1e8eb4117f27366855b192104098330a2f290f26 [9/10] mm/slab: move [__]ksize and slab_ksize() to mm/slub.c
config: x86_64-rhel-9.4-bpf (https://download.01.org/0day-ci/archive/20260114/202601140605.GNpnpgLF-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260114/202601140605.GNpnpgLF-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601140605.GNpnpgLF-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> Warning: mm/slub.c:7013 function parameter 'objp' not described in 'ksize'
>> Warning: mm/slub.c:7013 function parameter 'objp' not described in 'ksize'

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

Re: [vbabka-slab:slab/for-7.0/obj_metadata 9/10] Warning: mm/slub.c:7013 function parameter 'objp' not described in 'ksize'

[Harry Yoo]

On Wed, Jan 14, 2026 at 07:00:18AM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab.git
> head:   a4e5702b7bb846cf50d2917cadf2289c25720812
> commit: 1e8eb4117f27366855b192104098330a2f290f26 [9/10] mm/slab: move [__]ksize and slab_ksize() to mm/slub.c
> config: x86_64-rhel-9.4-bpf (https://download.01.org/0day-ci/archive/20260114/202601140605.GNpnpgLF-lkp@intel.com/config
> compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260114/202601140605.GNpnpgLF-lkp@intel.com/reproduce
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202601140605.GNpnpgLF-lkp@intel.com/
> 
> All warnings (new ones prefixed by >>):
> 
> >> Warning: mm/slub.c:7013 function parameter 'objp' not described in 'ksize'
> >> Warning: mm/slub.c:7013 function parameter 'objp' not described in 'ksize'

We moved the comment from __ksize() to ksize(),
but didn't rename @object to @objp.

Could you please fix it locally, Vlastimil?

diff --git a/mm/slub.c b/mm/slub.c
index d3aa805f3e05..373ee58b8b9e 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -7070,7 +7070,7 @@ static size_t __ksize(const void *object)

 /**
  * ksize -- Report full size of underlying allocation
- * @object: pointer to the object
+ * @objp: pointer to the object
  *
  * This should only be used internally to query the true size of allocations.
  * It is not meant to be a way to discover the usable size of an allocation
@@ -7078,7 +7078,7 @@ static size_t __ksize(const void *object)
  * the originally requested allocation size may trigger KASAN, UBSAN_BOUNDS,
  * and/or FORTIFY_SOURCE.
  *
- * Return: size of the actual memory used by @object in bytes
+ * Return: size of the actual memory used by @objp in bytes
  */
 size_t ksize(const void *objp)
 {

-- 
Cheers,
Harry / Hyeonggon

Re: [vbabka-slab:slab/for-7.0/obj_metadata 9/10] Warning: mm/slub.c:7013 function parameter 'objp' not described in 'ksize'

[Vlastimil Babka]

On 1/14/26 02:28, Harry Yoo wrote:
> On Wed, Jan 14, 2026 at 07:00:18AM +0800, kernel test robot wrote:
>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab.git
>> head:   a4e5702b7bb846cf50d2917cadf2289c25720812
>> commit: 1e8eb4117f27366855b192104098330a2f290f26 [9/10] mm/slab: move [__]ksize and slab_ksize() to mm/slub.c
>> config: x86_64-rhel-9.4-bpf (https://download.01.org/0day-ci/archive/20260114/202601140605.GNpnpgLF-lkp@intel.com/config
>> compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
>> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260114/202601140605.GNpnpgLF-lkp@intel.com/reproduce
>> 
>> If you fix the issue in a separate patch/commit (i.e. not just a new version of
>> the same patch/commit), kindly add following tags
>> | Reported-by: kernel test robot <lkp@intel.com>
>> | Closes: https://lore.kernel.org/oe-kbuild-all/202601140605.GNpnpgLF-lkp@intel.com/
>> 
>> All warnings (new ones prefixed by >>):
>> 
>> >> Warning: mm/slub.c:7013 function parameter 'objp' not described in 'ksize'
>> >> Warning: mm/slub.c:7013 function parameter 'objp' not described in 'ksize'
> 
> We moved the comment from __ksize() to ksize(),
> but didn't rename @object to @objp.

Haha actually I moved... sorry.

> Could you please fix it locally, Vlastimil?

Done, thanks!

> 
> diff --git a/mm/slub.c b/mm/slub.c
> index d3aa805f3e05..373ee58b8b9e 100644
> --- a/mm/slub.c
> +++ b/mm/slub.c
> @@ -7070,7 +7070,7 @@ static size_t __ksize(const void *object)
> 
>  /**
>   * ksize -- Report full size of underlying allocation
> - * @object: pointer to the object
> + * @objp: pointer to the object
>   *
>   * This should only be used internally to query the true size of allocations.
>   * It is not meant to be a way to discover the usable size of an allocation
> @@ -7078,7 +7078,7 @@ static size_t __ksize(const void *object)
>   * the originally requested allocation size may trigger KASAN, UBSAN_BOUNDS,
>   * and/or FORTIFY_SOURCE.
>   *
> - * Return: size of the actual memory used by @object in bytes
> + * Return: size of the actual memory used by @objp in bytes
>   */
>  size_t ksize(const void *objp)
>  {
>