Check the minimum block size on v5 filesystems.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
libxfs/xfs_sb.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/libxfs/xfs_sb.c b/libxfs/xfs_sb.c
index adc47e2..46e57aa 100644
--- a/libxfs/xfs_sb.c
+++ b/libxfs/xfs_sb.c
@@ -259,6 +259,13 @@ xfs_mount_validate_sb(
return -EFSCORRUPTED;
}
+ if (xfs_sb_version_hascrc(&mp->m_sb) &&
+ unlikely(
+ sbp->sb_blocksize < XFS_MIN_CRC_BLOCKSIZE)) {
+ xfs_notice(mp, "v5 SB sanity check failed");
+ return -EFSCORRUPTED;
+ }
+
/*
* Currently only very few inode sizes are supported.
*/
--
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