tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   b6fc3fddade7a194bd141a49f2689e50f796ef46
commit: c0cc999f3c32e65a7c88fb323893ddf897b24488 [4936/6121] drm/amdkfd: Fix the warning of array-index-out-of-bounds
config: arm64-allyesconfig
compiler: aarch64-linux-gcc (GCC) 12.1.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=c0cc999f3c32e65a7c88fb323893ddf897b24488
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout c0cc999f3c32e65a7c88fb323893ddf897b24488
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/gpu/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c:1726:6: warning: no previous prototype for 'kfd_fill_cache_non_crat_info' [-Wmissing-prototypes]
    1726 | void kfd_fill_cache_non_crat_info(struct kfd_topology_device *dev, struct kfd_dev *kdev)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/kfd_fill_cache_non_crat_info +1726 drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c

  1722	
  1723	/* kfd_fill_cache_non_crat_info - Fill GPU cache info using kfd_gpu_cache_info
  1724	 * tables
  1725	 */
> 1726	void kfd_fill_cache_non_crat_info(struct kfd_topology_device *dev, struct kfd_dev *kdev)
  1727	{
  1728		struct kfd_gpu_cache_info *pcache_info = NULL;
  1729		int i, j, k;
  1730		int ct = 0;
  1731		unsigned int cu_processor_id;
  1732		int ret;
  1733		unsigned int num_cu_shared;
  1734		struct kfd_cu_info cu_info;
  1735		struct kfd_cu_info *pcu_info;
  1736		int gpu_processor_id;
  1737		struct kfd_cache_properties *props_ext;
  1738		int num_of_entries = 0;
  1739		int num_of_cache_types = 0;
  1740		struct kfd_gpu_cache_info cache_info[KFD_MAX_CACHE_TYPES];
  1741	
  1742		amdgpu_amdkfd_get_cu_info(kdev->adev, &cu_info);
  1743		pcu_info = &cu_info;
  1744	
  1745		gpu_processor_id = dev->node_props.simd_id_base;
  1746	
  1747		pcache_info = cache_info;
  1748		num_of_cache_types = kfd_get_gpu_cache_info(kdev, &pcache_info);
  1749		if (!num_of_cache_types) {
  1750			pr_warn("no cache info found\n");
  1751			return;
  1752		}
  1753	
  1754		/* For each type of cache listed in the kfd_gpu_cache_info table,
  1755		 * go through all available Compute Units.
  1756		 * The [i,j,k] loop will
  1757		 *		if kfd_gpu_cache_info.num_cu_shared = 1
  1758		 *			will parse through all available CU
  1759		 *		If (kfd_gpu_cache_info.num_cu_shared != 1)
  1760		 *			then it will consider only one CU from
  1761		 *			the shared unit
  1762		 */
  1763		for (ct = 0; ct < num_of_cache_types; ct++) {
  1764			cu_processor_id = gpu_processor_id;
  1765			if (pcache_info[ct].cache_level == 1) {
  1766				for (i = 0; i < pcu_info->num_shader_engines; i++) {
  1767					for (j = 0; j < pcu_info->num_shader_arrays_per_engine; j++) {
  1768						for (k = 0; k < pcu_info->num_cu_per_sh; k += pcache_info[ct].num_cu_shared) {
  1769	
  1770							ret = fill_in_l1_pcache(&props_ext, pcache_info, pcu_info,
  1771											pcu_info->cu_bitmap[i % 4][j + i / 4], ct,
  1772											cu_processor_id, k);
  1773	
  1774							if (ret < 0)
  1775								break;
  1776	
  1777							if (!ret) {
  1778								num_of_entries++;
  1779								list_add_tail(&props_ext->list, &dev->cache_props);
  1780							}
  1781	
  1782							/* Move to next CU block */
  1783							num_cu_shared = ((k + pcache_info[ct].num_cu_shared) <=
  1784								pcu_info->num_cu_per_sh) ?
  1785								pcache_info[ct].num_cu_shared :
  1786								(pcu_info->num_cu_per_sh - k);
  1787							cu_processor_id += num_cu_shared;
  1788						}
  1789					}
  1790				}
  1791			} else {
  1792				ret = fill_in_l2_l3_pcache(&props_ext, pcache_info,
  1793									pcu_info, ct, cu_processor_id);
  1794	
  1795				if (ret < 0)
  1796					break;
  1797	
  1798				if (!ret) {
  1799					num_of_entries++;
  1800					list_add_tail(&props_ext->list, &dev->cache_props);
  1801				}
  1802			}
  1803		}
  1804		dev->node_props.caches_count += num_of_entries;
  1805		pr_debug("Added [%d] GPU cache entries\n", num_of_entries);
  1806	}
  1807	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp