linux-kernel - Re: [PATCH v7 3/4] mm,page_owner: Display all stacks and their count

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Date: Sat, 10 Feb 2024 07:14:27 +0800
From: kernel test robot <lkp@...el.com>
To: Oscar Salvador <osalvador@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc: oe-kbuild-all@...ts.linux.dev,
	Linux Memory Management List <linux-mm@...ck.org>,
	linux-kernel@...r.kernel.org, Michal Hocko <mhocko@...e.com>,
	Vlastimil Babka <vbabka@...e.cz>, Marco Elver <elver@...gle.com>,
	Andrey Konovalov <andreyknvl@...il.com>,
	Alexander Potapenko <glider@...gle.com>,
	Oscar Salvador <osalvador@...e.de>
Subject: Re: [PATCH v7 3/4] mm,page_owner: Display all stacks and their count

Hi Oscar,

kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-nonmm-unstable]
[also build test WARNING on linus/master v6.8-rc3]
[cannot apply to akpm-mm/mm-everything next-20240209]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Oscar-Salvador/lib-stackdepot-Move-stack_record-struct-definition-into-the-header/20240209-074611
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable
patch link:    https://lore.kernel.org/r/20240208234539.19113-4-osalvador%40suse.de
patch subject: [PATCH v7 3/4] mm,page_owner: Display all stacks and their count
config: x86_64-randconfig-121-20240209 (https://download.01.org/0day-ci/archive/20240210/202402100636.5lFPAlbB-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240210/202402100636.5lFPAlbB-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202402100636.5lFPAlbB-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> mm/page_owner.c:828:30: sparse: sparse: symbol 'page_owner_stack_operations' was not declared. Should it be static?
   mm/page_owner.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/xarray.h, ...):
   include/linux/page-flags.h:242:46: sparse: sparse: self-comparison always evaluates to false

vim +/page_owner_stack_operations +828 mm/page_owner.c

   827	
 > 828	const struct file_operations page_owner_stack_operations = {
   829		.open		= page_owner_stack_open,
   830		.read		= seq_read,
   831		.llseek		= seq_lseek,
   832		.release	= seq_release,
   833	};
   834	

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