[PATCH 2/4] xfs: check owner of dir3 free blocks

Darrick J. Wong
2020-02-29T01:48:52Z

From: Darrick J. Wong <darrick.wong@oracle.com>

Check the owner field of dir3 free block headers.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
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 f622ede7119e..79b917e62ac3 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;