Hi Kyeongdon, Thank you for the patch! Yet something to improve: [auto build test ERROR on arm64/for-next/core] [also build test ERROR on v4.18 next-20180817] [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/Kyeongdon-Kim/arm64-kasan-add-interceptors-for-strcmp-strncmp-functions/20180817-165304 base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core config: x86_64-randconfig-x012-201832 (attached as .config) compiler: gcc-7 (Debian 7.3.0-16) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): mm/kasan/kasan.c: In function 'strcmp': >> mm/kasan/kasan.c:313:9: error: implicit declaration of function '__strcmp'; did you mean 'strcmp'? [-Werror=implicit-function-declaration] return __strcmp(cs, ct); ^~~~~~~~ strcmp mm/kasan/kasan.c: In function 'strncmp': >> mm/kasan/kasan.c:321:9: error: implicit declaration of function '__strncmp'; did you mean 'strncmp'? [-Werror=implicit-function-declaration] return __strncmp(cs, ct, len); ^~~~~~~~~ strncmp cc1: some warnings being treated as errors vim +313 mm/kasan/kasan.c 298 299 #undef memcpy 300 void *memcpy(void *dest, const void *src, size_t len) 301 { 302 check_memory_region((unsigned long)src, len, false, _RET_IP_); 303 check_memory_region((unsigned long)dest, len, true, _RET_IP_); 304 305 return __memcpy(dest, src, len); 306 } 307 #undef strcmp 308 int strcmp(const char *cs, const char *ct) 309 { 310 check_memory_region((unsigned long)cs, 1, false, _RET_IP_); 311 check_memory_region((unsigned long)ct, 1, false, _RET_IP_); 312 > 313 return __strcmp(cs, ct); 314 } 315 #undef strncmp 316 int strncmp(const char *cs, const char *ct, size_t len) 317 { 318 check_memory_region((unsigned long)cs, len, false, _RET_IP_); 319 check_memory_region((unsigned long)ct, len, false, _RET_IP_); 320 > 321 return __strncmp(cs, ct, len); 322 } 323 void kasan_alloc_pages(struct page *page, unsigned int order) 324 { 325 if (likely(!PageHighMem(page))) 326 kasan_unpoison_shadow(page_address(page), PAGE_SIZE << order); 327 } 328 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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