4.2-stable review patch. If anyone has any objections, please let me know.
------------------ From: "Darrick J. Wong" <[email protected]> commit 2f123bce18943fff819bc10f8868ffb9149fc622 upstream. 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). Signed-off-by: Darrick J. Wong <[email protected]> Reviewed-by: Dave Chinner <[email protected]> Signed-off-by: Dave Chinner <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- fs/xfs/libxfs/xfs_dir2_data.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- 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); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
