From: Darrick J. Wong <darrick.wong@xxxxxxxxxx> Before we start processing what we /think/ is a da3 node block, actually check the magic to make sure that we're looking at a node block. This way we won't blow the asserts in _node_hdr_from_disk on corrupted metadata. Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx> --- fs/xfs/libxfs/xfs_da_btree.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/xfs/libxfs/xfs_da_btree.c b/fs/xfs/libxfs/xfs_da_btree.c index 9efbd2038ffb..70e7da634f3e 100644 --- a/fs/xfs/libxfs/xfs_da_btree.c +++ b/fs/xfs/libxfs/xfs_da_btree.c @@ -1522,8 +1522,11 @@ xfs_da3_node_lookup_int( break; } - blk->magic = XFS_DA_NODE_MAGIC; + if (blk->magic != XFS_DA_NODE_MAGIC && + blk->magic != XFS_DA3_NODE_MAGIC) + return -EFSCORRUPTED; + blk->magic = XFS_DA_NODE_MAGIC; /* * Search an intermediate node for a match. -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
