Hi Kees, kernel test robot noticed the following build warnings:
[auto build test WARNING on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/Kees-Cook/mm-util-Use-kmalloc-buckets-for-kmemdup_nul/20260521-204404 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20260521124026.work.036-kees%40kernel.org patch subject: [PATCH] mm/util: Use kmalloc buckets for kmemdup_nul() config: s390-allnoconfig (https://download.01.org/0day-ci/archive/20260522/[email protected]/config) compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 5bac06718f502014fade905512f1d26d578a18f3) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260522/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All warnings (new ones prefixed by >>): mm/util.c:37:22: warning: variable 'user_buckets' set but not used [-Wunused-but-set-global] 37 | static kmem_buckets *user_buckets __ro_after_init; | ^ >> mm/util.c:38:22: warning: variable 'nul_buckets' set but not used >> [-Wunused-but-set-global] 38 | static kmem_buckets *nul_buckets __ro_after_init; | ^ 2 warnings generated. vim +/nul_buckets +38 mm/util.c 36 > 37 static kmem_buckets *user_buckets __ro_after_init; > 38 static kmem_buckets *nul_buckets __ro_after_init; 39 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
