diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/tree-checker.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/btrfs/tree-checker.c b/fs/btrfs/tree-checker.c index 6638483e8ad8..493d4d9e0f79 100644 --- a/fs/btrfs/tree-checker.c +++ b/fs/btrfs/tree-checker.c @@ -221,6 +221,17 @@ static int check_extent_data_item(struct extent_buffer *leaf, fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item); + /* + * Make sure the item contains at least inline header, so the file + * extent type is not some garbage. + */ + if (item_size < BTRFS_FILE_EXTENT_INLINE_DATA_START) { + file_extent_err(leaf, slot, + "invalid item size, have %u expect [%lu, %u)", + item_size, BTRFS_FILE_EXTENT_INLINE_DATA_START, + SZ_4K); + return -EUCLEAN; + } if (btrfs_file_extent_type(leaf, fi) >= BTRFS_NR_FILE_EXTENT_TYPES) { file_extent_err(leaf, slot, "invalid type for file extent, have %u expect range [0, %u]", |