[PATCH 02/11] libxfs: verifier should set buffer error when da block has a bad magic number

Darrick J. Wong
2015-08-26T00:32:37Z

If xfs_da3_node_read_verify() doesn't recognize the magic number of a
buffer it's just read, set the buffer error to -EFSCORRUPTED so that
the error can be sent up to userspace. Without this patch we'll
notice the bad magic eventually while trying to traverse or change
the block, but we really ought to fail early in the verifier.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
libxfs/xfs_da_btree.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/libxfs/xfs_da_btree.c b/libxfs/xfs_da_btree.c
index c874164..289dc1e 100644
--- a/libxfs/xfs_da_btree.c
+++ b/libxfs/xfs_da_btree.c
@@ -229,6 +229,7 @@ xfs_da3_node_read_verify(
bp->b_ops->verify_read(bp);
return;
default:
+ xfs_buf_ioerror(bp, -EFSCORRUPTED);
break;