1 files changed, 8 insertions, 0 deletions

diff --git a/fs/xfs/xfs_dfrag.c b/fs/xfs/xfs_dfrag.c
index f852b082a084..c407e1ccff43 100644
--- a/fs/xfs/xfs_dfrag.c
+++ b/fs/xfs/xfs_dfrag.c
@@ -219,6 +219,14 @@ xfs_swap_extents(
         int             taforkblks = 0;
         __uint64_t      tmp;
 
+        /*
+         * We have no way of updating owner information in the BMBT blocks for
+         * each inode on CRC enabled filesystems, so to avoid corrupting the
+         * this metadata we simply don't allow extent swaps to occur.
+         */
+        if (xfs_sb_version_hascrc(&mp->m_sb))
+                return XFS_ERROR(EINVAL);
+
         tempifp = kmem_alloc(sizeof(xfs_ifork_t), KM_MAYFAIL);
         if (!tempifp) {
                 error = XFS_ERROR(ENOMEM);