avoid 32-bit overflow when calculating secondary superblock offsets

diff --git a/repair/sb.c b/repair/sb.c
index e901f12375e3825f182471bc5ea8be792f79dd87..f7c1c3a6d9b4587e5ec720af8b97e7c29ca8eb53 100644 (file)
--- a/repair/sb.c
+++ b/repair/sb.c
@@ -809,7 +809,7 @@ verify_set_primary_sb(xfs_sb_t              *rsb,
 
        if (current->index != sb_index)  {
                *sb_modified = 1;
-               off = current->index * current->geo.sb_agblocks
+               off = (xfs_off_t)current->index * current->geo.sb_agblocks
                        * current->geo.sb_blocksize;
                if (get_sb(sb, off, current->geo.sb_sectsize,
                                current->index) != XR_OK)