drivers/gpu/drm/msm/msm_iommu.c:341:16-17: WARNING kvmalloc is used to allocate this memory at line 335

drivers/gpu/drm/msm/msm_iommu.c:341:16-17: WARNING kvmalloc is used to allocate this memory at line 335

[kernel test robot]

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Rob Clark <robin.clark@oss.qualcomm.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   e7c375b181600caf135cfd03eadbc45eb530f2cb
commit: 830d68f2cb8ab6fb798bb9555016709a9e012af0 drm/msm: Fix pgtable prealloc error path
date:   5 weeks ago
:::::: branch date: 9 hours ago
:::::: commit date: 5 weeks ago
config: um-randconfig-r053-20251118 (https://download.01.org/0day-ci/archive/20251118/202511181058.kGAA7N2y-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 0bba1e76581bad04e7d7f09f5115ae5e2989e0d9)

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@intel.com>
| Reported-by: Julia Lawall <julia.lawall@inria.fr>
| Closes: https://lore.kernel.org/r/202511181058.kGAA7N2y-lkp@intel.com/

cocci warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/msm/msm_iommu.c:341:16-17: WARNING kvmalloc is used to allocate this memory at line 335

vim +341 drivers/gpu/drm/msm/msm_iommu.c

e601ea31d66ba8 Rob Clark 2025-06-29  328  
e601ea31d66ba8 Rob Clark 2025-06-29  329  static int
e601ea31d66ba8 Rob Clark 2025-06-29  330  msm_iommu_pagetable_prealloc_allocate(struct msm_mmu *mmu, struct msm_mmu_prealloc *p)
e601ea31d66ba8 Rob Clark 2025-06-29  331  {
e601ea31d66ba8 Rob Clark 2025-06-29  332  	struct kmem_cache *pt_cache = get_pt_cache(mmu);
e601ea31d66ba8 Rob Clark 2025-06-29  333  	int ret;
e601ea31d66ba8 Rob Clark 2025-06-29  334  
e601ea31d66ba8 Rob Clark 2025-06-29 @335  	p->pages = kvmalloc_array(p->count, sizeof(p->pages), GFP_KERNEL);
e601ea31d66ba8 Rob Clark 2025-06-29  336  	if (!p->pages)
e601ea31d66ba8 Rob Clark 2025-06-29  337  		return -ENOMEM;
e601ea31d66ba8 Rob Clark 2025-06-29  338  
e601ea31d66ba8 Rob Clark 2025-06-29  339  	ret = kmem_cache_alloc_bulk(pt_cache, GFP_KERNEL, p->count, p->pages);
e601ea31d66ba8 Rob Clark 2025-06-29  340  	if (ret != p->count) {
830d68f2cb8ab6 Rob Clark 2025-10-06 @341  		kfree(p->pages);
830d68f2cb8ab6 Rob Clark 2025-10-06  342  		p->pages = NULL;
e601ea31d66ba8 Rob Clark 2025-06-29  343  		p->count = ret;
e601ea31d66ba8 Rob Clark 2025-06-29  344  		return -ENOMEM;
e601ea31d66ba8 Rob Clark 2025-06-29  345  	}
e601ea31d66ba8 Rob Clark 2025-06-29  346  
e601ea31d66ba8 Rob Clark 2025-06-29  347  	return 0;
e601ea31d66ba8 Rob Clark 2025-06-29  348  }
e601ea31d66ba8 Rob Clark 2025-06-29  349  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki