Hi zhenwei, Thank you for the patch! Yet something to improve: [auto build test ERROR on akpm-mm/mm-everything] [also build test ERROR on next-20220519] [cannot apply to linux/master linus/master v5.18-rc7] [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/intel-lab-lkp/linux/commits/zhenwei-pi/recover-hardware-corrupted-page-by-virtio-balloon/20220520-151328 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything config: nios2-randconfig-r002-20220519 (https://download.01.org/0day-ci/archive/20220520/202205202151.7T3K7Szf-lkp@xxxxxxxxx/config) compiler: nios2-linux-gcc (GCC) 11.3.0 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 # https://github.com/intel-lab-lkp/linux/commit/a42127073dd4adb6354649c8235c5cde033d01f2 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review zhenwei-pi/recover-hardware-corrupted-page-by-virtio-balloon/20220520-151328 git checkout a42127073dd4adb6354649c8235c5cde033d01f2 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=nios2 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): nios2-linux-ld: drivers/virtio/virtio_balloon.o: in function `unpoison_memory_func': >> drivers/virtio/virtio_balloon.c:679: undefined reference to `unpoison_memory' drivers/virtio/virtio_balloon.c:679:(.text+0xc00): relocation truncated to fit: R_NIOS2_CALL26 against `unpoison_memory' nios2-linux-ld: drivers/virtio/virtio_balloon.o: in function `virtballoon_probe': >> drivers/virtio/virtio_balloon.c:1247: undefined reference to `register_memory_failure_notifier' drivers/virtio/virtio_balloon.c:1247:(.text+0x1940): relocation truncated to fit: R_NIOS2_CALL26 against `register_memory_failure_notifier' nios2-linux-ld: drivers/virtio/virtio_balloon.o: in function `virtballoon_remove': >> drivers/virtio/virtio_balloon.c:1323: undefined reference to `unregister_memory_failure_notifier' drivers/virtio/virtio_balloon.c:1323:(.text+0x1bcc): relocation truncated to fit: R_NIOS2_CALL26 against `unregister_memory_failure_notifier' vim +679 drivers/virtio/virtio_balloon.c 661 662 static void unpoison_memory_func(struct work_struct *work) 663 { 664 struct virtio_balloon *vb; 665 struct page *page; 666 667 vb = container_of(work, struct virtio_balloon, unpoison_memory_work); 668 669 do { 670 spin_lock(&vb->recover_page_list_lock); 671 page = list_first_entry_or_null(&vb->recovered_page_list, 672 struct page, lru); 673 if (page) 674 list_del(&page->lru); 675 spin_unlock(&vb->recover_page_list_lock); 676 677 if (page) { 678 put_page(page); > 679 unpoison_memory(page_to_pfn(page), true, "virtio-balloon"); 680 } 681 } while (page); 682 } 683 -- 0-DAY CI Kernel Test Service https://01.org/lkp