tree: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git fscache-netfs-lib head: fc307ae9cffffb17be171fb6613a788746e0b564 commit: a9e1626c4d3c876c864422ac4388d859dcb801c0 [2/28] mm: Add wait_on_page_writeback_killable() config: x86_64-randconfig-a012-20210323 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 78a65cd945d006ff02f9d24d9cc20a302ed93b08) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/com... git remote add dhowells-fs https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git git fetch --no-tags dhowells-fs fscache-netfs-lib git checkout a9e1626c4d3c876c864422ac4388d859dcb801c0 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): vim +2847 mm/page-writeback.c 2835 2836 /** 2837 * Wait for a page to complete writeback 2838 * @page: The page to wait on 2839 * 2840 * Wait for the writeback status of a page to clear or a fatal signal to occur. 2841 * 2842 * Return: 2843 * - 0 on success. 2844 * - -EINTR if a fatal signal was encountered. 2845 */ 2846 int wait_on_page_writeback_killable(struct page *page) 2848 int ret = 0; 2849 2850 while (PageWriteback(page)) { 2851 trace_wait_on_page_writeback(page, page_mapping(page)); 2852 ret = wait_on_page_bit_killable(page, PG_writeback); 2853 if (ret < 0) 2854 break; 2855 } 2856 2857 return ret; 2858 } 2859 EXPORT_SYMBOL(wait_on_page_writeback_killable); 2860 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org