tree: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git fscache-iter-2 head: 7c7521adffeb04466a42e8e1956353b9d9038d02 commit: 4bd5274decc61468104b84b1c1bc72817700e63b [42/75] cachefiles: Automatically close a file that's not in use after a while config: powerpc64-randconfig-s032-20210910 (attached as .config) compiler: powerpc-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # 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-iter-2 git checkout 4bd5274decc61468104b84b1c1bc72817700e63b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=powerpc SHELL=/bin/bash fs/fscache/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) vim +/fscache_lru_cookie_timeout +34 fs/fscache/cookie.c 24 25 #define fscache_cookie_hash_shift 15 26 static struct hlist_bl_head fscache_cookie_hash[1 << fscache_cookie_hash_shift]; 27 static LIST_HEAD(fscache_cookies); 28 static DEFINE_RWLOCK(fscache_cookies_lock); 29 static LIST_HEAD(fscache_cookie_lru); 30 static DEFINE_SPINLOCK(fscache_cookie_lru_lock); 31 static DEFINE_TIMER(fscache_cookie_lru_timer, fscache_cookie_lru_timed_out); 32 static DECLARE_WORK(fscache_cookie_lru_work, fscache_cookie_lru_worker); 33 static const char fscache_cookie_stages[FSCACHE_COOKIE_STAGE__NR] = "-LCAIFMWRD"; 35 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org