Hi, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.17-rc1 next-20220124] [cannot apply to arm64/for-next/core rostedt-trace/for-next] [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-linux-dev/kasan... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git dd81e1c7d5fb126e5fbc5c9e334d7b3ec29a16a0 config: microblaze-randconfig-s032-20220124 (https://download.01.org/0day-ci/archive/20220125/202201251520.0CgVaz6r-lk...) compiler: microblaze-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # https://github.com/0day-ci/linux/commit/e53c62ef4d4998f3bdd75ec887bc39a1e... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review andrey-konovalov-linux-dev/kasan-vmalloc-arm64-add-vmalloc-tagging-support-for-SW-HW_TAGS/20220125-021005 git checkout e53c62ef4d4998f3bdd75ec887bc39a1ef2dd740 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=microblaze SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) mm/vmalloc.c:2224:49: sparse: expected restricted kasan_vmalloc_flags_t [usertype] flags mm/vmalloc.c:2224:49: sparse: got unsigned int mm/vmalloc.c:2463:53: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected restricted kasan_vmalloc_flags_t [usertype] flags @@ got unsigned int @@ mm/vmalloc.c:2463:53: sparse: expected restricted kasan_vmalloc_flags_t [usertype] flags mm/vmalloc.c:2463:53: sparse: got unsigned int mm/vmalloc.c:3148:29: sparse: sparse: invalid assignment: |= mm/vmalloc.c:3148:29: sparse: left side has type restricted kasan_vmalloc_flags_t mm/vmalloc.c:3148:29: sparse: right side has type unsigned int mm/vmalloc.c:3165:21: sparse: sparse: invalid assignment: |= mm/vmalloc.c:3165:21: sparse: left side has type restricted kasan_vmalloc_flags_t mm/vmalloc.c:3165:21: sparse: right side has type unsigned int mm/vmalloc.c:3167:29: sparse: sparse: invalid assignment: |= mm/vmalloc.c:3167:29: sparse: left side has type restricted kasan_vmalloc_flags_t mm/vmalloc.c:3167:29: sparse: right side has type unsigned int vim +2224 mm/vmalloc.c 2176 2177 /** 2178 * vm_map_ram - map pages linearly into kernel virtual address (vmalloc space) 2179 * @pages: an array of pointers to the pages to be mapped 2180 * @count: number of pages 2181 * @node: prefer to allocate data structures on this node 2182 * 2183 * If you use this function for less than VMAP_MAX_ALLOC pages, it could be 2184 * faster than vmap so it's good. But if you mix long-life and short-life 2185 * objects with vm_map_ram(), it could consume lots of address space through 2186 * fragmentation (especially on a 32bit machine). You could see failures in 2187 * the end. Please use this function for short-lived objects. 2188 * 2189 * Returns: a pointer to the address that has been mapped, or %NULL on failure 2190 */ 2191 void *vm_map_ram(struct page **pages, unsigned int count, int node) 2192 { 2193 unsigned long size = (unsigned long)count << PAGE_SHIFT; 2194 unsigned long addr; 2195 void *mem; 2196 2197 if (likely(count <= VMAP_MAX_ALLOC)) { 2198 mem = vb_alloc(size, GFP_KERNEL); 2199 if (IS_ERR(mem)) 2200 return NULL; 2201 addr = (unsigned long)mem; 2202 } else { 2203 struct vmap_area *va; 2204 va = alloc_vmap_area(size, PAGE_SIZE, 2205 VMALLOC_START, VMALLOC_END, node, GFP_KERNEL); 2206 if (IS_ERR(va)) 2207 return NULL; 2208 2209 addr = va->va_start; 2210 mem = (void *)addr; 2211 } 2212 2213 if (vmap_pages_range(addr, addr + size, PAGE_KERNEL, 2214 pages, PAGE_SHIFT) < 0) { 2215 vm_unmap_ram(mem, count); 2216 return NULL; 2217 } 2218 2219 /* 2220 * Mark the pages as accessible, now that they are mapped. 2221 * With hardware tag-based KASAN, marking is skipped for 2222 * non-VM_ALLOC mappings, see __kasan_unpoison_vmalloc(). 2223 */ 2225 2226 return mem; 2227 } 2228 EXPORT_SYMBOL(vm_map_ram); 2229 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org