tree: git://git.infradead.org/users/hch/misc.git dax-devirtualize head: 80c5f0a323a2c0f58e936ac2be5b5a19e3d8dcfb commit: 80c5f0a323a2c0f58e936ac2be5b5a19e3d8dcfb [7/7] dax: rename the virtual flag to cached config: x86_64-randconfig-a011-20211207 (https://download.01.org/0day-ci/archive/20211208/202112082309.XAgtNCAF-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 097a1cb1d5ebb3a0ec4bcaed8ba3ff6a8e33c00a) 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 git remote add hch-misc git://git.infradead.org/users/hch/misc.git git fetch --no-tags hch-misc dax-devirtualize git checkout 80c5f0a323a2c0f58e936ac2be5b5a19e3d8dcfb # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash fs/fuse/ 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 >>): set_dax_cached(fs->dax_dev); ^ 1 error generated. vim +/set_dax_cached +840 fs/fuse/virtio_fs.c 782 783 static int virtio_fs_setup_dax(struct virtio_device *vdev, struct virtio_fs *fs) 784 { 785 struct virtio_shm_region cache_reg; 786 struct dev_pagemap *pgmap; 787 bool have_cache; 788 789 if (!IS_ENABLED(CONFIG_FUSE_DAX)) 790 return 0; 791 792 /* Get cache region */ 793 have_cache = virtio_get_shm_region(vdev, &cache_reg, 794 (u8)VIRTIO_FS_SHMCAP_ID_CACHE); 795 if (!have_cache) { 796 dev_notice(&vdev->dev, "%s: No cache capability\n", __func__); 797 return 0; 798 } 799 800 if (!devm_request_mem_region(&vdev->dev, cache_reg.addr, cache_reg.len, 801 dev_name(&vdev->dev))) { 802 dev_warn(&vdev->dev, "could not reserve region addr=0x%llx len=0x%llx\n", 803 cache_reg.addr, cache_reg.len); 804 return -EBUSY; 805 } 806 807 dev_notice(&vdev->dev, "Cache len: 0x%llx @ 0x%llx\n", cache_reg.len, 808 cache_reg.addr); 809 810 pgmap = devm_kzalloc(&vdev->dev, sizeof(*pgmap), GFP_KERNEL); 811 if (!pgmap) 812 return -ENOMEM; 813 814 pgmap->type = MEMORY_DEVICE_FS_DAX; 815 816 /* Ideally we would directly use the PCI BAR resource but 817 * devm_memremap_pages() wants its own copy in pgmap. So 818 * initialize a struct resource from scratch (only the start 819 * and end fields will be used). 820 */ 821 pgmap->range = (struct range) { 822 .start = (phys_addr_t) cache_reg.addr, 823 .end = (phys_addr_t) cache_reg.addr + cache_reg.len - 1, 824 }; 825 pgmap->nr_range = 1; 826 827 fs->window_kaddr = devm_memremap_pages(&vdev->dev, pgmap); 828 if (IS_ERR(fs->window_kaddr)) 829 return PTR_ERR(fs->window_kaddr); 830 831 fs->window_phys_addr = (phys_addr_t) cache_reg.addr; 832 fs->window_len = (phys_addr_t) cache_reg.len; 833 834 dev_dbg(&vdev->dev, "%s: window kaddr 0x%px phys_addr 0x%llx len 0x%llx\n", 835 __func__, fs->window_kaddr, cache_reg.addr, cache_reg.len); 836 837 fs->dax_dev = alloc_dax(fs, &virtio_fs_dax_ops); 838 if (IS_ERR(fs->dax_dev)) 839 return PTR_ERR(fs->dax_dev); 841 return devm_add_action_or_reset(&vdev->dev, virtio_fs_cleanup_dax, 842 fs->dax_dev); 843 } 844 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org