Re: [PATCH 5/6] mm: add selftests to split_huge_page() to verify unmap/zap of zero pages

kernel test robot
2024-08-01T04:46:10Z

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@intel.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

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