Hi Andrey, Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linus/master] [also build test WARNING on next-20190102] [cannot apply to v4.20] [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/Andrey-Konovalov/kasan-tag-based-mode-fixes/20190103-050707 config: x86_64-randconfig-x016-201900 (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): mm/kasan/common.c: In function 'kasan_krealloc': >> mm/kasan/common.c:525:3: warning: ignoring return value of >> 'kasan_kmalloc_large', declared with attribute warn_unused_result >> [-Wunused-result] kasan_kmalloc_large(object, size, flags); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> mm/kasan/common.c:527:3: warning: ignoring return value of 'kasan_kmalloc', >> declared with attribute warn_unused_result [-Wunused-result] kasan_kmalloc(page->slab_cache, object, size, flags, true); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/kasan_kmalloc_large +525 mm/kasan/common.c 514 515 void kasan_krealloc(const void *object, size_t size, gfp_t flags) 516 { 517 struct page *page; 518 519 if (unlikely(object == ZERO_SIZE_PTR)) 520 return; 521 522 page = virt_to_head_page(object); 523 524 if (unlikely(!PageSlab(page))) > 525 kasan_kmalloc_large(object, size, flags); 526 else > 527 kasan_kmalloc(page->slab_cache, object, size, flags, > true); 528 } 529 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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