Hi Andrey, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.11-rc2] [cannot apply to arm64/for-next/core hnaz-linux-mm/master next-20210104] [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/Andrey-Konovalov/kasan-HW_TAGS-tests-support-and-fixes/20210106-022940 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git e71ba9452f0b5b2e8dc8aa5445198cd9214a6a62 config: x86_64-randconfig-a003-20210105 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 5c951623bc8965fa1e89660f2f5f4a2944e4981a) 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/15d82adbf82e57e44789e091da9e141ba4247dba git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Andrey-Konovalov/kasan-HW_TAGS-tests-support-and-fixes/20210106-022940 git checkout 15d82adbf82e57e44789e091da9e141ba4247dba # 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 >>): In file included from arch/x86/boot/compressed/cmdline.c:2: In file included from arch/x86/boot/compressed/misc.h:30: In file included from include/linux/acpi.h:14: In file included from include/linux/resource_ext.h:11: In file included from include/linux/slab.h:136: >> include/linux/kasan.h:314:77: warning: non-void function does not return a value [-Wreturn-type] static inline bool kasan_check_byte(const void *address, unsigned long ip) {} ^ 1 warning generated. vim +314 include/linux/kasan.h 262 263 static inline bool kasan_enabled(void) 264 { 265 return false; 266 } 267 static inline slab_flags_t kasan_never_merge(void) 268 { 269 return 0; 270 } 271 static inline void kasan_unpoison_range(const void *address, size_t size) {} 272 static inline void kasan_alloc_pages(struct page *page, unsigned int order) {} 273 static inline void kasan_free_pages(struct page *page, unsigned int order) {} 274 static inline void kasan_cache_create(struct kmem_cache *cache, 275 unsigned int *size, 276 slab_flags_t *flags) {} 277 static inline size_t kasan_metadata_size(struct kmem_cache *cache) { return 0; } 278 static inline void kasan_poison_slab(struct page *page) {} 279 static inline void kasan_unpoison_object_data(struct kmem_cache *cache, 280 void *object) {} 281 static inline void kasan_poison_object_data(struct kmem_cache *cache, 282 void *object) {} 283 static inline void *kasan_init_slab_obj(struct kmem_cache *cache, 284 const void *object) 285 { 286 return (void *)object; 287 } 288 static inline bool kasan_slab_free(struct kmem_cache *s, void *object, 289 unsigned long ip) 290 { 291 return false; 292 } 293 static inline void kasan_slab_free_mempool(void *ptr, unsigned long ip) {} 294 static inline void *kasan_slab_alloc(struct kmem_cache *s, void *object, 295 gfp_t flags) 296 { 297 return object; 298 } 299 static inline void *kasan_kmalloc(struct kmem_cache *s, const void *object, 300 size_t size, gfp_t flags) 301 { 302 return (void *)object; 303 } 304 static inline void *kasan_kmalloc_large(const void *ptr, size_t size, gfp_t flags) 305 { 306 return (void *)ptr; 307 } 308 static inline void *kasan_krealloc(const void *object, size_t new_size, 309 gfp_t flags) 310 { 311 return (void *)object; 312 } 313 static inline void kasan_kfree_large(void *ptr, unsigned long ip) {} > 314 static inline bool kasan_check_byte(const void *address, unsigned long ip) {} 315 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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