Hi Wen, kernel test robot noticed the following build errors: [auto build test ERROR on brauner-vfs/vfs.all] [also build test ERROR on linus/master v6.14-rc5 next-20250307] [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/Wen-Yang/eventfd-introduce-configurable-maximum-value-for-eventfd/20250309-135152 base: https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git vfs.all patch link: https://lore.kernel.org/r/20250309055003.32194-1-wen.yang%40linux.dev patch subject: [PATCH v3] eventfd: introduce configurable maximum value for eventfd config: i386-buildonly-randconfig-003-20250309 (https://download.01.org/0day-ci/archive/20250309/202503092223.G4FJDVsM-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250309/202503092223.G4FJDVsM-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202503092223.G4FJDVsM-lkp@xxxxxxxxx/ All error/warnings (new ones prefixed by >>): fs/eventfd.c: In function 'eventfd_is_writable': >> fs/eventfd.c:251:76: error: 'ucnt' undeclared (first use in this function); did you mean 'uint'? 251 | return (ctx->maximum > ctx->count) && (ctx->maximum - ctx->count > ucnt); | ^~~~ | uint fs/eventfd.c:251:76: note: each undeclared identifier is reported only once for each function it appears in >> fs/eventfd.c:252:1: warning: control reaches end of non-void function [-Wreturn-type] 252 | } | ^ vim +251 fs/eventfd.c 248 249 static inline bool eventfd_is_writable(const struct eventfd_ctx *ctx) 250 { > 251 return (ctx->maximum > ctx->count) && (ctx->maximum - ctx->count > ucnt); > 252 } 253 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki