Hi Xuan, kernel test robot noticed the following build warnings:
https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Xuan-Zhuo/virtio_ring-introduce-dma-map-api-for-page/20240411-105318 base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next patch link: https://lore.kernel.org/r/20240411025127.51945-5-xuanzhuo%40linux.alibaba.com patch subject: [PATCH vhost 4/6] virtio_net: big mode support premapped config: i386-randconfig-141-20240414 (https://download.01.org/0day-ci/archive/20240414/202404141343.iphko7zd-...@intel.com/config) compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0 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 <l...@intel.com> | Reported-by: Dan Carpenter <dan.carpen...@linaro.org> | Closes: https://lore.kernel.org/r/202404141343.iphko7zd-...@intel.com/ New smatch warnings: drivers/net/virtio_net.c:485 give_pages() warn: impossible condition '((page->dma_addr) == (~0)) => (0-u32max == u64max)' vim +485 drivers/net/virtio_net.c e9d7417b97f420 Jason Wang 2012-12-07 481 static void give_pages(struct receive_queue *rq, struct page *page) 0a888fd1f6320d Mark McLoughlin 2008-11-16 482 { 9ab86bbcf8be75 Shirley Ma 2010-01-29 483 struct page *end; 0a888fd1f6320d Mark McLoughlin 2008-11-16 484 59e4bcf761eeba Xuan Zhuo 2024-04-11 @485 if (page_dma_addr(page) == DMA_MAPPING_ERROR) { (struct page)->dma_addr is unsigned long but DMA_MAPPING_ERROR is dma_addr_t. 59e4bcf761eeba Xuan Zhuo 2024-04-11 486 if (page_chain_map(rq, page)) { 59e4bcf761eeba Xuan Zhuo 2024-04-11 487 __free_pages(page, 0); 59e4bcf761eeba Xuan Zhuo 2024-04-11 488 return; 59e4bcf761eeba Xuan Zhuo 2024-04-11 489 } 59e4bcf761eeba Xuan Zhuo 2024-04-11 490 } 59e4bcf761eeba Xuan Zhuo 2024-04-11 491 e9d7417b97f420 Jason Wang 2012-12-07 492 /* Find end of list, sew whole thing into vi->rq.pages. */ 590f79cf558cb4 Xuan Zhuo 2024-04-11 493 for (end = page; page_chain_next(end); end = page_chain_next(end)); 590f79cf558cb4 Xuan Zhuo 2024-04-11 494 590f79cf558cb4 Xuan Zhuo 2024-04-11 495 page_chain_add(end, rq->pages); e9d7417b97f420 Jason Wang 2012-12-07 496 rq->pages = page; 0a888fd1f6320d Mark McLoughlin 2008-11-16 497 } -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
