static int check_block_group_item(struct extent_buffer *leaf,
struct btrfs_key *key, int slot)
{
+ struct btrfs_fs_info *fs_info = leaf->fs_info;
struct btrfs_block_group_item bgi;
u32 item_size = btrfs_item_size(leaf, slot);
+ u64 chunk_objectid;
u64 flags;
u64 type;
read_extent_buffer(leaf, &bgi, btrfs_item_ptr_offset(leaf, slot),
sizeof(bgi));
- if (unlikely(btrfs_stack_block_group_chunk_objectid(&bgi) !=
- BTRFS_FIRST_CHUNK_TREE_OBJECTID)) {
+ chunk_objectid = btrfs_stack_block_group_chunk_objectid(&bgi);
+ if (btrfs_fs_incompat(fs_info, EXTENT_TREE_V2)) {
+ /*
+ * We don't init the nr_global_roots until we load the global
+ * roots, so this could be 0 at mount time. If it's 0 we'll
+ * just assume we're fine, and later we'll check against our
+ * actual value.
+ */
+ if (unlikely(fs_info->nr_global_roots &&
+ chunk_objectid >= fs_info->nr_global_roots)) {
+ block_group_err(leaf, slot,
+ "invalid block group global root id, have %llu, needs to be <= %llu",
+ chunk_objectid,
+ fs_info->nr_global_roots);
+ return -EUCLEAN;
+ }
+ } else if (unlikely(chunk_objectid != BTRFS_FIRST_CHUNK_TREE_OBJECTID)) {
block_group_err(leaf, slot,
"invalid block group chunk objectid, have %llu expect %llu",
btrfs_stack_block_group_chunk_objectid(&bgi),