Hi Yue, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on xiang-erofs/dev-test] [also build test WARNING on next-20211214] [cannot apply to v5.16-rc5] [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/Yue-Hu/erofs-support-tail-packin... base: https://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git dev-test config: arm64-randconfig-r024-20211214 (https://download.01.org/0day-ci/archive/20211216/202112160025.qGQJemAr-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project dd245bab9fbb364faa1581e4f92ba3119a872fba) 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 # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://github.com/0day-ci/linux/commit/669be7ff96dfecf5377f5717882b8e958... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Yue-Hu/erofs-support-tail-packing-inline-compressed-data/20211215-174814 git checkout 669be7ff96dfecf5377f5717882b8e958eb16f0b # 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=arm64 SHELL=/bin/bash fs/erofs/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): if (!vi->z_idata_size || vi->z_idata_size > EROFS_BLKSIZ) { ~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~ 1 warning generated. vim +114 fs/erofs/zmap.c 31 32 static int z_erofs_fill_inode_lazy(struct inode *inode) 33 { 34 struct erofs_inode *const vi = EROFS_I(inode); 35 struct super_block *const sb = inode->i_sb; 36 int err, headnr; 37 erofs_off_t pos; 38 struct page *page; 39 void *kaddr; 40 struct z_erofs_map_header *h; 41 42 if (test_bit(EROFS_I_Z_INITED_BIT, &vi->flags)) { 43 /* 44 * paired with smp_mb() at the end of the function to ensure 45 * fields will only be observed after the bit is set. 46 */ 47 smp_mb(); 48 return 0; 49 } 50 51 if (wait_on_bit_lock(&vi->flags, EROFS_I_BL_Z_BIT, TASK_KILLABLE)) 52 return -ERESTARTSYS; 53 54 err = 0; 55 if (test_bit(EROFS_I_Z_INITED_BIT, &vi->flags)) 56 goto out_unlock; 57 58 DBG_BUGON(!erofs_sb_has_big_pcluster(EROFS_SB(sb)) && 59 !erofs_sb_has_ztailpacking(EROFS_SB(sb)) && 60 vi->datalayout == EROFS_INODE_FLAT_COMPRESSION_LEGACY); 61 62 pos = ALIGN(iloc(EROFS_SB(sb), vi->nid) + vi->inode_isize + 63 vi->xattr_isize, 8); 64 page = erofs_get_meta_page(sb, erofs_blknr(pos)); 65 if (IS_ERR(page)) { 66 err = PTR_ERR(page); 67 goto out_unlock; 68 } 69 70 kaddr = kmap_atomic(page); 71 72 h = kaddr + erofs_blkoff(pos); 73 vi->z_advise = le16_to_cpu(h->h_advise); 74 vi->z_idata_size = le16_to_cpu(h->h_idata_size); 75 vi->z_algorithmtype[0] = h->h_algorithmtype & 15; 76 vi->z_algorithmtype[1] = h->h_algorithmtype >> 4; 77 78 headnr = 0; 79 if (vi->z_algorithmtype[0] >= Z_EROFS_COMPRESSION_MAX || 80 vi->z_algorithmtype[++headnr] >= Z_EROFS_COMPRESSION_MAX) { 81 erofs_err(sb, "unknown HEAD%u format %u for nid %llu, please upgrade kernel", 82 headnr + 1, vi->z_algorithmtype[headnr], vi->nid); 83 err = -EOPNOTSUPP; 84 goto unmap_done; 85 } 86 87 vi->z_logical_clusterbits = LOG_BLOCK_SIZE + (h->h_clusterbits & 7); 88 if (!erofs_sb_has_big_pcluster(EROFS_SB(sb)) && 89 vi->z_advise & (Z_EROFS_ADVISE_BIG_PCLUSTER_1 | 90 Z_EROFS_ADVISE_BIG_PCLUSTER_2)) { 91 erofs_err(sb, "per-inode big pcluster without sb feature for nid %llu", 92 vi->nid); 93 err = -EFSCORRUPTED; 94 goto unmap_done; 95 } 96 if (vi->datalayout == EROFS_INODE_FLAT_COMPRESSION && 97 !(vi->z_advise & Z_EROFS_ADVISE_BIG_PCLUSTER_1) ^ 98 !(vi->z_advise & Z_EROFS_ADVISE_BIG_PCLUSTER_2)) { 99 erofs_err(sb, "big pcluster head1/2 of compact indexes should be consistent for nid %llu", 100 vi->nid); 101 err = -EFSCORRUPTED; 102 goto unmap_done; 103 } 104 unmap_done: 105 kunmap_atomic(kaddr); 106 unlock_page(page); 107 put_page(page); 108 if (err) 109 goto out_unlock; 110 111 if (vi->z_advise & Z_EROFS_ADVISE_INLINE_PCLUSTER) { 112 struct erofs_map_blocks map = { .m_la = inode->i_size - 1 }; 113 115 erofs_err(sb, "invalid tail-packing pclustersize %u", 116 vi->z_idata_size); 117 return -EFSCORRUPTED; 118 } 119 err = z_erofs_do_map_blocks(inode, &map, 120 EROFS_GET_BLOCKS_FINDTAIL); 121 if (map.mpage) 122 put_page(map.mpage); 123 if (err < 0) 124 goto out_unlock; 125 } 126 127 /* paired with smp_mb() at the beginning of the function */ 128 smp_mb(); 129 set_bit(EROFS_I_Z_INITED_BIT, &vi->flags); 130 out_unlock: 131 clear_and_wake_up_bit(EROFS_I_BL_Z_BIT, &vi->flags); 132 return err; 133 } 134 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org