tree: https://github.com/alexshi/linux.git 58lru head: d89fa86f842f0474cc8fb76e2896e84209d99746 commit: f9f7d0891bce8957b6c28239c6bc99e4b4b8357c [16/21] mm/lru: replace pgdat lru_lock with lruvec lock config: nds32-allmodconfig (attached as .config) compiler: nds32le-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout f9f7d0891bce8957b6c28239c6bc99e4b4b8357c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nds32 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from arch/nds32/include/asm/page.h:57, from include/linux/mm_types_task.h:16, from include/linux/mm_types.h:5, from include/linux/mmzone.h:21, from include/linux/gfp.h:6, from include/linux/mm.h:10, from mm//swap.c:17: mm//internal.h: In function 'mem_map_next': arch/nds32/include/asm/memory.h:82:32: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 82 | #define pfn_valid(pfn) ((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr)) | ^~ mm//internal.h:455:8: note: in expansion of macro 'pfn_valid' 455 | if (!pfn_valid(pfn)) | ^~~~~~~~~ mm//swap.c: In function 'activate_page': 367 | __activate_page(page, lruvec, NULL); | ^~~~~~~~~~~~~~~ mm//swap.c:308:13: note: declared here 308 | static void __activate_page(struct page *page, struct lruvec *lruvec) | ^~~~~~~~~~~~~~~ mm//swap.c:362:13: warning: unused variable 'pgdat' [-Wunused-variable] 362 | pg_data_t *pgdat = page_pgdat(page); | ^~~~~ vim +/__activate_page +367 mm//swap.c 359 360 void activate_page(struct page *page) 361 { 362 pg_data_t *pgdat = page_pgdat(page); 363 struct lruvec *lruvec; 364 365 page = compound_head(page); 366 lruvec = lock_page_lruvec_irq(page); 368 unlock_page_lruvec_irq(lruvec); 369 } 370 #endif 371 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org