From: "Darrick J. Wong" <darrick.wong@xxxxxxxxxx>
Source kernel commit: 6fb5aac73310d030be13eb3481fdb7c7cc7c0f00
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>
Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
libxfs/xfs_dir2_node.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libxfs/xfs_dir2_node.c b/libxfs/xfs_dir2_node.c
index 48c06da2..b2026da5 100644
--- a/libxfs/xfs_dir2_node.c
+++ b/libxfs/xfs_dir2_node.c
@@ -191,6 +191,8 @@ 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;
--
2.26.2
