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authorDarrick J. Wong <darrick.wong@oracle.com>2015-08-19 03:33:58 +0300
committerDave Chinner <david@fromorbit.com>2015-08-19 03:33:58 +0300
commit2f123bce18943fff819bc10f8868ffb9149fc622 (patch)
treee568b49ec64c9230671833133da27405f76e111b /fs/xfs
parentdbad7c993053d8f482a5f76270a93307537efd8e (diff)
downloadlinux-2f123bce18943fff819bc10f8868ffb9149fc622.tar.xz
libxfs: readahead of dir3 data blocks should use the read verifier
In the dir3 data block readahead function, use the regular read verifier to check the block's CRC and spot-check the block contents instead of directly calling only the spot-checking routine. This prevents corrupted directory data blocks from being read into the kernel, which can lead to garbage ls output and directory loops (if say one of the entries contains slashes and other junk). cc: <stable@vger.kernel.org> # 3.12 - 4.2 Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/libxfs/xfs_dir2_data.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/xfs/libxfs/xfs_dir2_data.c b/fs/xfs/libxfs/xfs_dir2_data.c
index 6a57fdbc63ef..824131e71bc5 100644
--- a/fs/xfs/libxfs/xfs_dir2_data.c
+++ b/fs/xfs/libxfs/xfs_dir2_data.c
@@ -252,7 +252,8 @@ xfs_dir3_data_reada_verify(
return;
case cpu_to_be32(XFS_DIR2_DATA_MAGIC):
case cpu_to_be32(XFS_DIR3_DATA_MAGIC):
- xfs_dir3_data_verify(bp);
+ bp->b_ops = &xfs_dir3_data_buf_ops;
+ bp->b_ops->verify_read(bp);
return;
default:
xfs_buf_ioerror(bp, -EFSCORRUPTED);