linux-kernel - Re: [PATCH 5/6] mm: add selftests to split_huge

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Message-ID: <ZqsS/1ts8leyUeEQ@rli9-mobl>
Date: Thu, 1 Aug 2024 12:45:51 +0800
From: kernel test robot <lkp@...el.com>
To: Usama Arif <usamaarif642@...il.com>, <akpm@...ux-foundation.org>,
	<linux-mm@...ck.org>
CC: <oe-kbuild-all@...ts.linux.dev>, <hannes@...xchg.org>, <riel@...riel.com>,
	<shakeel.butt@...ux.dev>, <roman.gushchin@...ux.dev>, <yuzhao@...gle.com>,
	<david@...hat.com>, <baohua@...nel.org>, <ryan.roberts@....com>,
	<rppt@...nel.org>, <willy@...radead.org>, <cerasuolodomenico@...il.com>,
	<corbet@....net>, <linux-kernel@...r.kernel.org>,
	<linux-doc@...r.kernel.org>, <kernel-team@...a.com>, Alexander Zhu
	<alexlzhu@...com>, Usama Arif <usamaarif642@...il.com>
Subject: Re: [PATCH 5/6] mm: add selftests to split_huge_page() to verify
 unmap/zap of zero pages

Hi Usama,

kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-everything]

url:    https://github.com/intel-lab-lkp/linux/commits/Usama-Arif/Revert-memcg-remove-mem_cgroup_uncharge_list/20240730-223949
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20240730125346.1580150-6-usamaarif642%40gmail.com
patch subject: [PATCH 5/6] mm: add selftests to split_huge_page() to verify unmap/zap of zero pages
:::::: branch date: 32 hours ago
:::::: commit date: 32 hours ago
compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240801/202408010618.lgnamdZd-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/r/202408010618.lgnamdZd-lkp@intel.com/

All warnings (new ones prefixed by >>):

   vm_util.c: In function 'rss_anon':
>> vm_util.c:188:41: warning: format '%ld' expects argument of type 'long int *', but argument 3 has type 'uint64_t *' {aka 'long long unsigned int *'} [-Wformat=]
     188 |         if (sscanf(buffer, "RssAnon:%10ld kB", &rss_anon) != 1)
         |                                     ~~~~^      ~~~~~~~~~
         |                                         |      |
         |                                         |      uint64_t * {aka long long unsigned int *}
         |                                         long int *
         |                                     %10lld


vim +188 tools/testing/selftests/mm/vm_util.c

642bc52aed9c99 tools/testing/selftests/vm/vm_util.c Muhammad Usama Anjum 2022-04-28  174  
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  175  uint64_t rss_anon(void)
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  176  {
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  177  	uint64_t rss_anon = 0;
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  178  	FILE *fp;
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  179  	char buffer[MAX_LINE_LENGTH];
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  180  
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  181  	fp = fopen(STATUS_FILE_PATH, "r");
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  182  	if (!fp)
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  183  		ksft_exit_fail_msg("%s: Failed to open file %s\n", __func__, STATUS_FILE_PATH);
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  184  
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  185  	if (!check_for_pattern(fp, "RssAnon:", buffer, sizeof(buffer)))
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  186  		goto err_out;
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  187  
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30 @188  	if (sscanf(buffer, "RssAnon:%10ld kB", &rss_anon) != 1)
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  189  		ksft_exit_fail_msg("Reading status error\n");
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  190  
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  191  err_out:
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  192  	fclose(fp);
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  193  	return rss_anon;
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  194  }
15bd39f288be91 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-07-30  195  

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