diff options
Diffstat (limited to 'fs/exfat')
| -rw-r--r-- | fs/exfat/namei.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/fs/exfat/namei.c b/fs/exfat/namei.c index 2c4c44229352..98f67e632ad1 100644 --- a/fs/exfat/namei.c +++ b/fs/exfat/namei.c @@ -637,14 +637,26 @@ static int exfat_find(struct inode *dir, struct qstr *qname, info->size = le64_to_cpu(ep2->dentry.stream.valid_size); info->valid_size = le64_to_cpu(ep2->dentry.stream.valid_size); info->size = le64_to_cpu(ep2->dentry.stream.size); + + info->start_clu = le32_to_cpu(ep2->dentry.stream.start_clu); + if (!is_valid_cluster(sbi, info->start_clu) && info->size) { + exfat_warn(sb, "start_clu is invalid cluster(0x%x)", + info->start_clu); + info->size = 0; + info->valid_size = 0; + } + + if (info->valid_size > info->size) { + exfat_warn(sb, "valid_size(%lld) is greater than size(%lld)", + info->valid_size, info->size); + info->valid_size = info->size; + } + if (info->size == 0) { info->flags = ALLOC_NO_FAT_CHAIN; info->start_clu = EXFAT_EOF_CLUSTER; - } else { + } else info->flags = ep2->dentry.stream.flags; - info->start_clu = - le32_to_cpu(ep2->dentry.stream.start_clu); - } exfat_get_entry_time(sbi, &info->crtime, ep->dentry.file.create_tz, |