Hi Frank, kernel test robot noticed the following build warnings: [auto build test WARNING on v6.12] [cannot apply to akpm-mm/mm-everything brauner-vfs/vfs.all linus/master v6.13-rc1 next-20241128] [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/Frank-van-der-Linden/mm-hugetlb-optionally-pre-zero-hugetlb-pages/20241203-042817 base: v6.12 patch link: https://lore.kernel.org/r/20241202202058.3249628-1-fvdl%40google.com patch subject: [PATCH] mm/hugetlb: optionally pre-zero hugetlb pages config: powerpc-ps3_defconfig (https://download.01.org/0day-ci/archive/20241203/202412030519.W14yll4e-lkp@xxxxxxxxx/config) compiler: powerpc64-linux-gcc (GCC) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241203/202412030519.W14yll4e-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/202412030519.W14yll4e-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): mm/hugetlb.c: In function 'prezero_enabled_store': >> mm/hugetlb.c:4290:13: warning: variable 'err' set but not used [-Wunused-but-set-variable] 4290 | int err; | ^~~ vim +/err +4290 mm/hugetlb.c 4284 4285 static ssize_t prezero_enabled_store(struct kobject *kobj, 4286 struct kobj_attribute *attr, 4287 const char *buf, size_t count) 4288 { 4289 struct hstate *h; > 4290 int err; 4291 long val; 4292 bool prezero_enabled; 4293 4294 err = kstrtol(buf, 10, &val); 4295 if (val != 0 && val != 1) 4296 return -EINVAL; 4297 4298 prezero_enabled = !!val; 4299 4300 h = kobj_to_hstate(kobj, NULL); 4301 if (prezero_enabled == h->prezero_enabled) 4302 return count; 4303 4304 h->prezero_enabled = prezero_enabled; 4305 4306 mem_hotplug_begin(); 4307 khzerod_run_hstate(h); 4308 mem_hotplug_done(); 4309 4310 return count; 4311 } 4312 HSTATE_ATTR(prezero_enabled); 4313 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
