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R . Silva" , "Liam R . Howlett" , Matthew Wilcox , =?utf-8?B?TWljaGHFgiBNaXJvc8WCYXc=?= , Mike Rapoport , Nadav Amit , Pasha Tatashin , Paul Gofman , Peter Xu , Shuah Khan , Suren Baghdasaryan , Vlastimil Babka , Yang Shi , Yun Zhou , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: Re: Re: fs/proc/task_mmu: Implement IOCTL for efficient page table scanning Message-ID: <202308262125.VHTuZ7uV-lkp@intel.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-Rspam-User: X-Stat-Signature: bmnhtcx4xtfy58bu7dcnszeg498aqrzc X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: C435E40011 X-HE-Tag: 1693055283-383784 X-HE-Meta: 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 7XwTvuRu BF+Fam0mDvG1741mKR355FGko8I9iWh1lBhTfcIqnrtjnb8EhzYXCVykrh4SLpivqIbUwrzXlQ4QssVcjKNYFHcybQcM4JOb63V3TFaKSdnw+p0wlmS03nGLtRFS1Pg5ewSKsb/ZuGvRBleOFhBDJlwGHWR2CnQVuyqdsslH6Nu+wA4sjxPwKM3RruwGNkJ9W4PJFrSf2IQn7Cg0kNni+UVZQyD0pz2pXf4qMCBImnDJNvKSBVE0ul3wfcsY+8dbKyayQ9PrzPR8MFDWebahmzaEKyQjenYFbqKiTQH3TWFX0cbLPGHkpVAF+Wr8w6Ng5gBWgoBwTWTZrC2UotqJ5GeWE31XSTkpY2ZREn/x6QoNc2kHMpV5IaFGYRkI8poWqEb5xjKkpzkq1Mjma3WH+3HuLACnZhiPT/4PY X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi Michał, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] [also build test WARNING on linus/master v6.5-rc7 next-20230825] [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/Micha-Miros-aw/Re-fs-proc-task_mmu-Implement-IOCTL-for-efficient-page-table-scanning/20230721-033050 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/a0b5c6776b2ed91f78a7575649f8b100e58bd3a9.1689881078.git.mirq-linux%40rere.qmqm.pl patch subject: Re: fs/proc/task_mmu: Implement IOCTL for efficient page table scanning config: i386-randconfig-i004-20230720 (https://download.01.org/0day-ci/archive/20230826/202308262125.VHTuZ7uV-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce: (https://download.01.org/0day-ci/archive/20230826/202308262125.VHTuZ7uV-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202308262125.VHTuZ7uV-lkp@intel.com/ All warnings (new ones prefixed by >>): fs/proc/task_mmu.c: In function 'pagemap_scan_test_walk': fs/proc/task_mmu.c:1921:13: error: implicit declaration of function 'userfaultfd_wp_async'; did you mean 'userfaultfd_wp'? [-Werror=implicit-function-declaration] 1921 | if (userfaultfd_wp_async(vma) && userfaultfd_wp_use_markers(vma)) | ^~~~~~~~~~~~~~~~~~~~ | userfaultfd_wp fs/proc/task_mmu.c: In function 'pagemap_scan_init_bounce_buffer': fs/proc/task_mmu.c:2290:22: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 2290 | p->vec_out = (void __user *)p->arg.vec; | ^ fs/proc/task_mmu.c: At top level: >> fs/proc/task_mmu.c:1967:13: warning: 'pagemap_scan_backout_range' defined but not used [-Wunused-function] 1967 | static void pagemap_scan_backout_range(struct pagemap_scan_private *p, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/pagemap_scan_backout_range +1967 fs/proc/task_mmu.c 1966 > 1967 static void pagemap_scan_backout_range(struct pagemap_scan_private *p, 1968 unsigned long addr, unsigned long end) 1969 { 1970 struct page_region *cur_buf = &p->cur_buf; 1971 1972 if (cur_buf->start != addr) { 1973 cur_buf->end = addr; 1974 } else { 1975 cur_buf->start = cur_buf->end = 0; 1976 } 1977 1978 p->end_addr = 0; 1979 } 1980 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki