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-rw-r--r--fs/btrfs/tree-checker.c40
1 files changed, 39 insertions, 1 deletions
diff --git a/fs/btrfs/tree-checker.c b/fs/btrfs/tree-checker.c
index 7eee0bbd8c37..0a56616bef9a 100644
--- a/fs/btrfs/tree-checker.c
+++ b/fs/btrfs/tree-checker.c
@@ -923,7 +923,9 @@ static void extent_err(const struct extent_buffer *eb, int slot,
btrfs_item_key_to_cpu(eb, &key, slot);
bytenr = key.objectid;
- if (key.type == BTRFS_METADATA_ITEM_KEY)
+ if (key.type == BTRFS_METADATA_ITEM_KEY ||
+ key.type == BTRFS_TREE_BLOCK_REF_KEY ||
+ key.type == BTRFS_SHARED_BLOCK_REF_KEY)
len = eb->fs_info->nodesize;
else
len = key.offset;
@@ -1154,6 +1156,37 @@ static int check_extent_item(struct extent_buffer *leaf,
return 0;
}
+static int check_simple_keyed_refs(struct extent_buffer *leaf,
+ struct btrfs_key *key, int slot)
+{
+ u32 expect_item_size = 0;
+
+ if (key->type == BTRFS_SHARED_DATA_REF_KEY)
+ expect_item_size = sizeof(struct btrfs_shared_data_ref);
+
+ if (btrfs_item_size_nr(leaf, slot) != expect_item_size) {
+ generic_err(leaf, slot,
+ "invalid item size, have %u expect %u for key type %u",
+ btrfs_item_size_nr(leaf, slot),
+ expect_item_size, key->type);
+ return -EUCLEAN;
+ }
+ if (!IS_ALIGNED(key->objectid, leaf->fs_info->sectorsize)) {
+ generic_err(leaf, slot,
+"invalid key objectid for shared block ref, have %llu expect aligned to %u",
+ key->objectid, leaf->fs_info->sectorsize);
+ return -EUCLEAN;
+ }
+ if (key->type != BTRFS_TREE_BLOCK_REF_KEY &&
+ !IS_ALIGNED(key->offset, leaf->fs_info->sectorsize)) {
+ extent_err(leaf, slot,
+ "invalid tree parent bytenr, have %llu expect aligned to %u",
+ key->offset, leaf->fs_info->sectorsize);
+ return -EUCLEAN;
+ }
+ return 0;
+}
+
/*
* Common point to switch the item-specific validation.
*/
@@ -1196,6 +1229,11 @@ static int check_leaf_item(struct extent_buffer *leaf,
case BTRFS_METADATA_ITEM_KEY:
ret = check_extent_item(leaf, key, slot);
break;
+ case BTRFS_TREE_BLOCK_REF_KEY:
+ case BTRFS_SHARED_DATA_REF_KEY:
+ case BTRFS_SHARED_BLOCK_REF_KEY:
+ ret = check_simple_keyed_refs(leaf, key, slot);
+ break;
}
return ret;
}