Hi Brendan, kernel test robot noticed the following build warnings: [auto build test WARNING on a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6] url: https://github.com/intel-lab-lkp/linux/commits/Brendan-Jackman/mm-asi-Make-some-utility-functions-noinstr-compatible/20240713-012107 base: a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 patch link: https://lore.kernel.org/r/20240712-asi-rfc-24-v1-18-144b319a40d8%40google.com patch subject: [PATCH 18/26] mm: asi: Map vmalloc/vmap data as nonsesnitive config: openrisc-allnoconfig (https://download.01.org/0day-ci/archive/20240713/202407132325.YotidwGR-lkp@xxxxxxxxx/config) compiler: or1k-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240713/202407132325.YotidwGR-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202407132325.YotidwGR-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): mm/vmalloc.c: In function 'remove_vm_area': >> mm/vmalloc.c:3192:23: warning: variable 'vm_addr' set but not used [-Wunused-but-set-variable] 3192 | unsigned long vm_addr; | ^~~~~~~ vim +/vm_addr +3192 mm/vmalloc.c 3177 3178 /** 3179 * remove_vm_area - find and remove a continuous kernel virtual area 3180 * @addr: base address 3181 * 3182 * Search for the kernel VM area starting at @addr, and remove it. 3183 * This function returns the found VM area, but using it is NOT safe 3184 * on SMP machines, except for its size or flags. 3185 * 3186 * Return: the area descriptor on success or %NULL on failure. 3187 */ 3188 struct vm_struct *remove_vm_area(const void *addr) 3189 { 3190 struct vmap_area *va; 3191 struct vm_struct *vm; > 3192 unsigned long vm_addr; 3193 3194 might_sleep(); 3195 3196 if (WARN(!PAGE_ALIGNED(addr), "Trying to vfree() bad address (%p)\n", 3197 addr)) 3198 return NULL; 3199 3200 va = find_unlink_vmap_area((unsigned long)addr); 3201 if (!va || !va->vm) 3202 return NULL; 3203 vm = va->vm; 3204 vm_addr = (unsigned long) READ_ONCE(vm->addr); 3205 3206 debug_check_no_locks_freed(vm->addr, get_vm_area_size(vm)); 3207 debug_check_no_obj_freed(vm->addr, get_vm_area_size(vm)); 3208 kasan_free_module_shadow(vm); 3209 kasan_poison_vmalloc(vm->addr, get_vm_area_size(vm)); 3210 3211 free_unmap_vmap_area(va); 3212 return vm; 3213 } 3214 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
