diff --git a/fs/jfs/jfs_imap.c b/fs/jfs/jfs_imap.c
index a360b24ed320..716175fc7d6e 100644
--- a/fs/jfs/jfs_imap.c
+++ b/fs/jfs/jfs_imap.c
@@ -749,6 +749,14 @@ int diWrite(tid_t tid, struct inode *ip)
 		p = (dtpage_t *) &jfs_ip->i_dtroot;
 		xp = (dtpage_t *) & dp->di_dtroot;
 		lv = ilinelock->lv;
+
+		/* Ensure the starting index and number of slots are within valid bounds */
+		if (start_index >= 128 || num_slots > 128 || (start_index + num_slots) > 128) {
+			/* Handle the error appropriately, such as logging a warning or returning an error code */
+			pr_warn("Invalid slot range: start_index=%u, num_slots=%u\n", start_index, num_slots);
+			return -EINVAL;
+		}
+
 		for (n = 0; n < ilinelock->index; n++, lv++) {
 			memcpy(&xp->slot[lv->offset], &p->slot[lv->offset],
 			       lv->length << L2DTSLOTSIZE);