From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Check the owner field of dir3 free block headers and reject the metadata
if there's something wrong with it.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Reviewed-by: Allison Collins <allison.henderson@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---
fs/xfs/libxfs/xfs_dir2_node.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/xfs/libxfs/xfs_dir2_node.c b/fs/xfs/libxfs/xfs_dir2_node.c
index bbd478ec75c9..6ac4aad98cd7 100644
--- a/fs/xfs/libxfs/xfs_dir2_node.c
+++ b/fs/xfs/libxfs/xfs_dir2_node.c
@@ -194,6 +194,8 @@ xfs_dir3_free_header_check(
return __this_address;
if (be32_to_cpu(hdr3->nvalid) < be32_to_cpu(hdr3->nused))
return __this_address;
+ if (be64_to_cpu(hdr3->hdr.owner) != dp->i_ino)
+ return __this_address;
} else {
struct xfs_dir2_free_hdr *hdr = bp->b_addr;
