diff options
Diffstat (limited to 'fs/f2fs/compress.c')
| -rw-r--r-- | fs/f2fs/compress.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c index afb79480c6a3..ec70a0a32327 100644 --- a/fs/f2fs/compress.c +++ b/fs/f2fs/compress.c @@ -899,6 +899,54 @@ static bool cluster_has_invalid_data(struct compress_ctx *cc) return false; } +bool f2fs_sanity_check_cluster(struct dnode_of_data *dn) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); + unsigned int cluster_size = F2FS_I(dn->inode)->i_cluster_size; + bool compressed = dn->data_blkaddr == COMPRESS_ADDR; + int cluster_end = 0; + int i; + char *reason = ""; + + if (!compressed) + return false; + + /* [..., COMPR_ADDR, ...] */ + if (dn->ofs_in_node % cluster_size) { + reason = "[*|C|*|*]"; + goto out; + } + + for (i = 1; i < cluster_size; i++) { + block_t blkaddr = data_blkaddr(dn->inode, dn->node_page, + dn->ofs_in_node + i); + + /* [COMPR_ADDR, ..., COMPR_ADDR] */ + if (blkaddr == COMPRESS_ADDR) { + reason = "[C|*|C|*]"; + goto out; + } + if (compressed) { + if (!__is_valid_data_blkaddr(blkaddr)) { + if (!cluster_end) + cluster_end = i; + continue; + } + /* [COMPR_ADDR, NULL_ADDR or NEW_ADDR, valid_blkaddr] */ + if (cluster_end) { + reason = "[C|N|N|V]"; + goto out; + } + } + } + return false; +out: + f2fs_warn(sbi, "access invalid cluster, ino:%lu, nid:%u, ofs_in_node:%u, reason:%s", + dn->inode->i_ino, dn->nid, dn->ofs_in_node, reason); + set_sbi_flag(sbi, SBI_NEED_FSCK); + return true; +} + static int __f2fs_cluster_blocks(struct inode *inode, unsigned int cluster_idx, bool compr) { @@ -916,6 +964,11 @@ static int __f2fs_cluster_blocks(struct inode *inode, goto fail; } + if (f2fs_sanity_check_cluster(&dn)) { + ret = -EFSCORRUPTED; + goto fail; + } + if (dn.data_blkaddr == COMPRESS_ADDR) { int i; |