Commit fbb0ce40 authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

btrfs: hold a ref on the root in btrfs_check_uuid_tree_entry 



We lookup the uuid of arbitrary subvolumes, hold a ref on the root while
we're doing this.

Signed-off-by: default avatarJosef Bacik <josef@toxicpanda.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent ca2037fb

fs/btrfs/volumes.c

+5 −1
Original line number Diff line number Diff line
@@ -4431,6 +4431,10 @@ static int btrfs_check_uuid_tree_entry(struct btrfs_fs_info *fs_info, 
			ret = 1;

		goto out;

	}

	if (!btrfs_grab_fs_root(subvol_root)) {

		ret = 1;

		goto out;

	}



	switch (type) {

	case BTRFS_UUID_KEY_SUBVOL:
@@ -4443,7 +4447,7 @@ static int btrfs_check_uuid_tree_entry(struct btrfs_fs_info *fs_info, 
			ret = 1;

		break;

	}



	btrfs_put_fs_root(subvol_root);

out:

	return ret;

}