[PATCH 1/4] xfs: fix buffer state when we reject a corrupt dir free block

Darrick J. Wong
2020-02-29T01:48:47Z

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

Fix two problems in the dir3 free block read routine when we want to
reject a corrupt free block. First, buffers should never have DONE set
at the same time that b_error is EFSCORRUPTED. Second, don't leak a
pointer back to the caller.

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 a0cc5e240306..f622ede7119e 100644
--- a/fs/xfs/libxfs/xfs_dir2_node.c
+++ b/fs/xfs/libxfs/xfs_dir2_node.c
@@ -227,7 +227,9 @@ __xfs_dir3_free_read(
fa = xfs_dir3_free_header_check(dp, fbno, *bpp);
if (fa) {
xfs_verifier_error(*bpp, -EFSCORRUPTED, fa);
+ (*bpp)->b_flags &= ~XBF_DONE;
xfs_trans_brelse(tp, *bpp);
+ *bpp = NULL;
return -EFSCORRUPTED;
}