tree: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git fscache-iter head: 47585048b7ec10d66ca6c102b468b9b362910475 commit: ce79c5fa2e9f6851d4dcd82b91223abd9c4a7444 [44/55] fscache: Remove the update operation config: i386-randconfig-s001-20210801 (attached as .config) compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/commit/?id=ce79c5fa2e9f6851d4dcd82b91223abd9c4a7444 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 git checkout ce79c5fa2e9f6851d4dcd82b91223abd9c4a7444 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash fs/fscache/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot sparse warnings: (new ones prefixed by >>) >> fs/fscache/stats.c:26:10: sparse: sparse: symbol 'fscache_n_updates_run' was not declared. Should it be static? >> fs/fscache/stats.c:51:10: sparse: sparse: symbol 'fscache_n_cop_update_object' was not declared. Should it be static? vim +/fscache_n_updates_run +26 fs/fscache/stats.c ef778e7ae67cd4 David Howells 2012-12-20 24 7394daa8c61dfd David Howells 2009-04-03 25 atomic_t fscache_n_updates; 7394daa8c61dfd David Howells 2009-04-03 @26 atomic_t fscache_n_updates_run; 7394daa8c61dfd David Howells 2009-04-03 27 7394daa8c61dfd David Howells 2009-04-03 28 atomic_t fscache_n_relinquishes; 2175bb06dc6cf2 David Howells 2009-11-19 29 atomic_t fscache_n_relinquishes_retire; 7394daa8c61dfd David Howells 2009-04-03 30 28223b34fc1a39 David Howells 2020-02-06 31 atomic_t fscache_n_resizes; 28223b34fc1a39 David Howells 2020-02-06 32 atomic_t fscache_n_resizes_null; 28223b34fc1a39 David Howells 2020-02-06 33 7394daa8c61dfd David Howells 2009-04-03 34 atomic_t fscache_n_cookie_index; 7394daa8c61dfd David Howells 2009-04-03 35 atomic_t fscache_n_cookie_data; 7394daa8c61dfd David Howells 2009-04-03 36 atomic_t fscache_n_cookie_special; 7394daa8c61dfd David Howells 2009-04-03 37 7394daa8c61dfd David Howells 2009-04-03 38 atomic_t fscache_n_object_alloc; 7394daa8c61dfd David Howells 2009-04-03 39 atomic_t fscache_n_object_no_alloc; 7394daa8c61dfd David Howells 2009-04-03 40 atomic_t fscache_n_object_lookups; 7394daa8c61dfd David Howells 2009-04-03 41 atomic_t fscache_n_object_lookups_negative; 7394daa8c61dfd David Howells 2009-04-03 42 atomic_t fscache_n_object_lookups_positive; 6795af81c88855 David Howells 2020-02-06 43 atomic_t fscache_n_object_creates; 7394daa8c61dfd David Howells 2009-04-03 44 atomic_t fscache_n_object_avail; 7394daa8c61dfd David Howells 2009-04-03 45 atomic_t fscache_n_object_dead; 7394daa8c61dfd David Howells 2009-04-03 46 52bd75fdb135d6 David Howells 2009-11-19 47 atomic_t fscache_n_cop_alloc_object; 52bd75fdb135d6 David Howells 2009-11-19 48 atomic_t fscache_n_cop_lookup_object; 6795af81c88855 David Howells 2020-02-06 49 atomic_t fscache_n_cop_create_object; ef778e7ae67cd4 David Howells 2012-12-20 50 atomic_t fscache_n_cop_invalidate_object; 52bd75fdb135d6 David Howells 2009-11-19 @51 atomic_t fscache_n_cop_update_object; 52bd75fdb135d6 David Howells 2009-11-19 52 atomic_t fscache_n_cop_drop_object; 52bd75fdb135d6 David Howells 2009-11-19 53 atomic_t fscache_n_cop_put_object; 52bd75fdb135d6 David Howells 2009-11-19 54 atomic_t fscache_n_cop_sync_cache; 52bd75fdb135d6 David Howells 2009-11-19 55 atomic_t fscache_n_cop_attr_changed; 52bd75fdb135d6 David Howells 2009-11-19 56 :::::: The code at line 26 was first introduced by commit :::::: 7394daa8c61dfda4baa687f133748fa0b599b017 FS-Cache: Add use of /proc and presentation of statistics :::::: TO: David Howells :::::: CC: David Howells --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org