11:36 a.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/xiang/linux.git erofs/chunk
head: a915f0e209270389efab942fcd446e31a98c4062
commit: a915f0e209270389efab942fcd446e31a98c4062 [8/8] erofs: support reading chunk-based
files
config: x86_64-randconfig-s021-20210816 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.3-348-gf0e6938b-dirty
#
https://git.kernel.org/pub/scm/linux/kernel/git/xiang/linux.git/commit/?i...
git remote add xiang-linux
https://git.kernel.org/pub/scm/linux/kernel/git/xiang/linux.git
git fetch --no-tags xiang-linux erofs/chunk
git checkout a915f0e209270389efab942fcd446e31a98c4062
# save the attached .config to linux build tree
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir
ARCH=x86_64 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>
sparse warnings: (new ones prefixed by >>)
> fs/erofs/data.c:136:25: sparse: sparse: cast to restricted
__le32
> fs/erofs/data.c:136:25: sparse: sparse: cast from restricted __le16
vim +136 fs/erofs/data.c
80
81 static int erofs_map_blocks(struct inode *inode,
82 struct erofs_map_blocks *map, int flags)
83 {
84 struct super_block *sb = inode->i_sb;
85 struct erofs_inode *vi = EROFS_I(inode);
86 struct erofs_inode_chunk_index *idx;
87 struct page *page;
88 u64 chunknr;
89 unsigned int unit;
90 erofs_off_t pos;
91 int err;
92
93 if (map->m_la >= inode->i_size) {
94 map->m_flags = 0;
95 map->m_plen = 0;
96 goto out;
97 }
98
99 if (vi->datalayout != EROFS_INODE_CHUNK_BASED)
100 return erofs_map_blocks_flatmode(inode, map, flags);
101
102 if (vi->chunkformat & EROFS_CHUNK_FORMAT_INDEXES)
103 unit = sizeof(*idx); /* chunk index */
104 else
105 unit = 4; /* chunk index */
106
107 chunknr = map->m_la >> vi->chunkbits;
108 pos = ALIGN(iloc(EROFS_SB(sb), vi->nid) + vi->inode_isize +
109 vi->xattr_isize, unit) + unit * chunknr;
110
111 page = erofs_get_meta_page(inode->i_sb, erofs_blknr(pos));
112 if (IS_ERR(page))
113 return PTR_ERR(page);
114
115 err = 0;
116 map->m_plen = min_t(erofs_off_t, 1 << vi->chunkbits,
117 inode->i_size - map->m_la);
118 if (!(vi->chunkformat & EROFS_CHUNK_FORMAT_INDEXES)) {
119 __le32 *blkaddr = page_address(page) + erofs_blkoff(pos);
120
121 if (le32_to_cpu(*blkaddr) == EROFS_NULL_ADDR) {
122 map->m_flags = 0;
123 } else {
124 map->m_pa = blknr_to_addr(le32_to_cpu(*blkaddr));
125 map->m_flags = EROFS_MAP_MAPPED;
126 }
127 goto out_unlock;
128 }
129 idx = page_address(page) + erofs_blkoff(pos);
130 switch (le32_to_cpu(idx->blkaddr)) {
131 case EROFS_NULL_ADDR:
132 map->m_flags = 0;
133 break;
134 default:
135 if (idx->device_id) {
136 erofs_err(sb, "invalid device %u @ %llu for nid
%llu",
137 le32_to_cpu(idx->device_id),
138 chunknr, vi->nid);
139 err = -EINVAL;
140 goto out;
141 }
142 map->m_pa = blknr_to_addr(le32_to_cpu(idx->blkaddr));
143 map->m_flags = EROFS_MAP_MAPPED;
144 break;
145 }
146 out_unlock:
147 unlock_page(page);
148 put_page(page);
149 out:
150 map->m_llen = map->m_plen;
151 return err;
152 }
153
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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org