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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: <202307211030.2CJH6TkM-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-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 4F8C74000E X-Stat-Signature: f98syz9grwjoayfztbk3kbnfdncofdft X-Rspam-User: X-HE-Tag: 1689908287-806803 X-HE-Meta: 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 +otVAYzT wlOKNCJS2fpIxlXFNuyJfLu5Kov8TnyEIl5mjCSGFgMkHa8jyZSuaf02hCC+i00NUVlam+YIzdx8xmgPV+tQMrwC2SwppR1BTVQIHQWvQFSCBsyLegOW/hH4zYrs2KmJxQUvyiorJH44pdAmZ2dXKxq2EleDZvxZGGqk//QdWuoZx/UX7+E++VY2HZGPrzYldcpSbQ+Zy7x3IH/y565zD7Wj6TqbcF4HYcazvacOi260wKWU7t1GcCqC+u4IkLMP1oiFQDjbuEyo4VefD7ccbmEoZ2UvK7V20kyofHzeO5C1cmmr4rLxAWn/9Uxf/SKkcBZFTetiy2kZwMbDaXkv0luX6JnRZ2ZXRm4rMU7DFJ+a5ABDezHp7L5++i+AZSDOcX5P7nMWFZzQijyz1eEMovbSqKgF2PqU+gWDM 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 errors: [auto build test ERROR on akpm-mm/mm-everything] [also build test ERROR on linus/master v6.5-rc2 next-20230720] [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: arc-randconfig-r035-20230720 (https://download.01.org/0day-ci/archive/20230721/202307211030.2CJH6TkM-lkp@intel.com/config) compiler: arceb-elf-gcc (GCC) 12.3.0 reproduce: (https://download.01.org/0day-ci/archive/20230721/202307211030.2CJH6TkM-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/202307211030.2CJH6TkM-lkp@intel.com/ All errors (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_pte_hole': >> fs/proc/task_mmu.c:2200:19: error: implicit declaration of function 'uffd_wp_range' [-Werror=implicit-function-declaration] 2200 | int err = uffd_wp_range(vma, addr, end - addr, true); | ^~~~~~~~~~~~~ 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 +/uffd_wp_range +2200 fs/proc/task_mmu.c 2182 2183 static int pagemap_scan_pte_hole(unsigned long addr, unsigned long end, 2184 int depth, struct mm_walk *walk) 2185 { 2186 struct pagemap_scan_private *p = walk->private; 2187 struct vm_area_struct *vma = walk->vma; 2188 int ret; 2189 2190 if (!vma || !pagemap_scan_is_interesting_page(p->cur_vma_category, p)) 2191 return 0; 2192 2193 ret = pagemap_scan_output(p->cur_vma_category, p, addr, &end); 2194 if (addr == end) 2195 return ret; 2196 2197 if (~p->arg.flags & PM_SCAN_WP_MATCHING) 2198 return ret; 2199 > 2200 int err = uffd_wp_range(vma, addr, end - addr, true); 2201 if (err < 0) 2202 ret = err; 2203 2204 return ret; 2205 } 2206 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki