On 13.03.19 г. 10:55 ч., Qu Wenruo wrote:
> Btrfs-progs already has comprehensive type checker, to ensure there is
> only 0 (SINGLE profile) or 1 (DUP/RAID0/1/5/6/10) bit set for chunk
> profile bits.
>
> Do the same work for kernel.
>
> Reported-by: Yoon Jungyeon <[email protected]>
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=202765
> Signed-off-by: Qu Wenruo <[email protected]>
Reviewed-by: Nikolay Borisov <[email protected]>
> ---
> fs/btrfs/tree-checker.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/fs/btrfs/tree-checker.c b/fs/btrfs/tree-checker.c
> index 5ccb4be583ea..c08609627720 100644
> --- a/fs/btrfs/tree-checker.c
> +++ b/fs/btrfs/tree-checker.c
> @@ -551,6 +551,13 @@ int btrfs_check_chunk_valid(struct btrfs_fs_info
> *fs_info,
> return -EUCLEAN;
> }
>
> + if (!is_power_of_2(type & BTRFS_BLOCK_GROUP_PROFILE_MASK) &&
> + (type & BTRFS_BLOCK_GROUP_PROFILE_MASK) != 0) {
> + chunk_err(fs_info, leaf, chunk, logical,
> + "invalid chunk profile flag: 0x%llx, expect 0 or 1 bit set",
> + type & BTRFS_BLOCK_GROUP_PROFILE_MASK);
> + return -EUCLEAN;
> + }
> if ((type & BTRFS_BLOCK_GROUP_TYPE_MASK) == 0) {
> chunk_err(fs_info, leaf, chunk, logical,
> "missing chunk type flag: 0x%llx", type);
>
