Hi, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.12-rc5] [cannot apply to hnaz-linux-mm/master next-20210330] [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] url: https://github.com/0day-ci/linux/commits/glittao-gmail-com/kunit-add-a-KUnit-test-for-SLUB-debugging-functionality/20210330-200635 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 1e43c377a79f9189fea8f2711b399d4e8b4e609b config: x86_64-randconfig-r022-20210330 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 482283042f795ecc27838a3b2f76b5494991401c) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://github.com/0day-ci/linux/commit/98f544695d3d3b4676d7ff7bd7c964c9d39172d2 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review glittao-gmail-com/kunit-add-a-KUnit-test-for-SLUB-debugging-functionality/20210330-200635 git checkout 98f544695d3d3b4676d7ff7bd7c964c9d39172d2 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> mm/slub.c:744:17: warning: use of logical '&&' with constant operand [-Wconstant-logical-operand] if (!(s->flags && SLAB_SILENT_ERRORS)) { ^ ~~~~~~~~~~~~~~~~~~ mm/slub.c:744:17: note: use '&' for a bitwise operation if (!(s->flags && SLAB_SILENT_ERRORS)) { ^~ & mm/slub.c:744:17: note: remove constant to silence this warning if (!(s->flags && SLAB_SILENT_ERRORS)) { ~^~~~~~~~~~~~~~~~~~~~~ mm/slub.c:759:17: warning: use of logical '&&' with constant operand [-Wconstant-logical-operand] if (!(s->flags && SLAB_SILENT_ERRORS)) { ^ ~~~~~~~~~~~~~~~~~~ mm/slub.c:759:17: note: use '&' for a bitwise operation if (!(s->flags && SLAB_SILENT_ERRORS)) { ^~ & mm/slub.c:759:17: note: remove constant to silence this warning if (!(s->flags && SLAB_SILENT_ERRORS)) { ~^~~~~~~~~~~~~~~~~~~~~ mm/slub.c:807:17: warning: use of logical '&&' with constant operand [-Wconstant-logical-operand] if (!(s->flags && SLAB_SILENT_ERRORS)) { ^ ~~~~~~~~~~~~~~~~~~ mm/slub.c:807:17: note: use '&' for a bitwise operation if (!(s->flags && SLAB_SILENT_ERRORS)) { ^~ & mm/slub.c:807:17: note: remove constant to silence this warning if (!(s->flags && SLAB_SILENT_ERRORS)) { ~^~~~~~~~~~~~~~~~~~~~~ mm/slub.c:1536:21: warning: unused function 'kmalloc_large_node_hook' [-Wunused-function] static inline void *kmalloc_large_node_hook(void *ptr, size_t size, gfp_t flags) ^ 4 warnings generated. vim +744 mm/slub.c 740 741 void object_err(struct kmem_cache *s, struct page *page, 742 u8 *object, char *reason) 743 { > 744 if (!(s->flags && SLAB_SILENT_ERRORS)) { 745 slab_bug(s, "%s", reason); 746 print_trailer(s, page, object); 747 } 748 } 749 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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