Hi Matt, [auto build test ERROR on powerpc/next] [also build test ERROR on v4.11-rc3 next-20170324] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Matt-Brown/powerpc-powernv-add-hdat-attribute-to-sysfs/20170324-191306 base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next config: powerpc-defconfig (attached as .config) compiler: powerpc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=powerpc Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All errors (new ones prefixed by >>): arch/powerpc/platforms/powernv/opal.c: In function '__machine_initcall_powernv_opal_init': >> arch/powerpc/platforms/powernv/opal.c:651:12: error: 'attr_name' may be used >> uninitialized in this function [-Werror=maybe-uninitialized] attr_name[n] = kstrdup(prop->name, GFP_KERNEL); ^ arch/powerpc/platforms/powernv/opal.c:618:9: note: 'attr_name' was declared here char **attr_name; ^~~~~~~~~ >> arch/powerpc/platforms/powernv/opal.c:661:12: error: 'exported_attrs' may be >> used uninitialized in this function [-Werror=maybe-uninitialized] attr_tmp = &exported_attrs[n]; ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~ arch/powerpc/platforms/powernv/opal.c:617:24: note: 'exported_attrs' was declared here struct bin_attribute *exported_attrs; ^~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/attr_name +651 arch/powerpc/platforms/powernv/opal.c 645 GFP_KERNEL); 646 attr_name = kzalloc(sizeof(char *)*(attr_count-2), GFP_KERNEL); 647 } 648 649 for_each_property_of_node(fw, prop) { 650 > 651 attr_name[n] = kstrdup(prop->name, GFP_KERNEL); 652 syms = of_get_property(fw, attr_name[n], &size); 653 654 if (!strcmp(attr_name[n], "name") || 655 !strcmp(attr_name[n], "phandle")) 656 continue; 657 658 if (!syms || size != 2 * sizeof(__be64)) 659 continue; 660 > 661 attr_tmp = &exported_attrs[n]; 662 attr_tmp->attr.name = attr_name[n]; 663 attr_tmp->attr.mode = 0400; 664 attr_tmp->read = export_attr_read; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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