From bf74507b97e488c8318c07576a53dbf9c7ed3280 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Thu, 27 Feb 2020 09:54:00 -0800 Subject: xfs: check owner of dir3 free blocks 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 Reviewed-by: Allison Collins Reviewed-by: Christoph Hellwig --- 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; -- cgit v1.2.3