Hi Hyesoo, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.9-rc1 next-20200818] [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/Hyesoo-Yu/Chunk-Heap-Support-on-... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 06a4ec1d9dc652e17ee3ac2ceb6c7cf6c2b75cdd config: microblaze-randconfig-r016-20200818 (attached as .config) compiler: microblaze-linux-gcc (GCC) 9.3.0 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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=microblaze If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/dma-buf/heaps/chunk_heap.c: In function 'chunk_alloc_pages': 72 | ret = alloc_pages_bulk(base, base + pageblock_nr_pages, MIGRATE_CMA, | ^~~~~~~~~~~~~~~~ | alloc_pages_node cc1: some warnings being treated as errors # https://github.com/0day-ci/linux/commit/6032a6b2cbc0a798f6548d6f58fdd46ec... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Hyesoo-Yu/Chunk-Heap-Support-on-DMA-HEAP/20200818-154733 git checkout 6032a6b2cbc0a798f6548d6f58fdd46eccaaf764 vim +72 drivers/dma-buf/heaps/chunk_heap.c 54 55 static int chunk_alloc_pages(struct chunk_heap *chunk_heap, struct page **pages, 56 unsigned int order, unsigned int count) 57 { 58 unsigned long base; 59 unsigned int i = 0, nr_block = 0, nr_elem, ret; 60 61 while (count) { 62 /* 63 * If the number of scanned page block is the same as max block, 64 * the tries of allocation fails. 65 */ 66 if (nr_block++ == chunk_heap->max_num_pageblocks) { 67 ret = -ENOMEM; 68 goto err_bulk; 69 } 70 base = chunk_get_next_pfn(chunk_heap); 71 nr_elem = min_t(unsigned int, count, pageblock_nr_pages >> order); 73 GFP_KERNEL, order, nr_elem, pages + i); 74 if (ret < 0) 75 goto err_bulk; 76 77 i += ret; 78 count -= ret; 79 } 80 81 return 0; 82 83 err_bulk: 84 while (i-- > 0) 85 __free_pages(pages[i], order); 86 87 return ret; 88 } 89 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org