diff --git a/fs/jfs/jfs_dtree.c b/fs/jfs/jfs_dtree.c
index defa82acb432c8324735d9e3cf3cee2ce88976ce..6bc8011b1c9a573bd7b8acd66258a78d4b39dabb 100644
--- a/fs/jfs/jfs_dtree.c
+++ b/fs/jfs/jfs_dtree.c
@@ -3384,6 +3384,13 @@ static int dtReadFirst(struct inode *ip, struct btstack * btstack)
 
 		/* get the leftmost entry */
 		stbl = DT_GETSTBL(p);
+
+		if (stbl[0] < 0 || stbl[0] > 127) {
+			DT_PUTPAGE(mp);
+			jfs_error(ip->i_sb, "stbl[0] out of bound\n");
+			return -EIO;
+		}
+
 		xd = (pxd_t *) & p->slot[stbl[0]];
 
 		/* get the child page block address */