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authorDarrick J. Wong <darrick.wong@oracle.com>2017-01-23 19:43:00 -0800
committerDarrick J. Wong <darrick.wong@oracle.com>2017-01-24 12:23:33 -0800
commit83d230eb5c638949350f4761acdfc0af5cb1bc00 (patch)
treede880020e9e8b7a7902e1a8b57711644c25f97b4 /fs
parentd2b3964a0780d2d2994eba57f950d6c9fe489ed8 (diff)
downloadlinux-83d230eb5c638949350f4761acdfc0af5cb1bc00.tar.bz2
xfs: verify dirblocklog correctly
sb_dirblklog is added to sb_blocklog to compute the directory block size in bytes. Therefore, we must compare the sum of both those values against XFS_MAX_BLOCKSIZE_LOG, not just dirblklog. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs')
-rw-r--r--fs/xfs/libxfs/xfs_sb.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c
index 2580262e4ea0..584ec896a533 100644
--- a/fs/xfs/libxfs/xfs_sb.c
+++ b/fs/xfs/libxfs/xfs_sb.c
@@ -242,7 +242,7 @@ xfs_mount_validate_sb(
sbp->sb_blocklog < XFS_MIN_BLOCKSIZE_LOG ||
sbp->sb_blocklog > XFS_MAX_BLOCKSIZE_LOG ||
sbp->sb_blocksize != (1 << sbp->sb_blocklog) ||
- sbp->sb_dirblklog > XFS_MAX_BLOCKSIZE_LOG ||
+ sbp->sb_dirblklog + sbp->sb_blocklog > XFS_MAX_BLOCKSIZE_LOG ||
sbp->sb_inodesize < XFS_DINODE_MIN_SIZE ||
sbp->sb_inodesize > XFS_DINODE_MAX_SIZE ||
sbp->sb_inodelog < XFS_DINODE_MIN_LOG ||