diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index ec1791fae96575ffe49c9aa1a2f42cbc6b21df2a..cad61b3f6beaa2983b6dda33a2b1b23a0c444a5b 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -1332,6 +1332,12 @@ static __always_inline void timekeeping_apply_adjustment(struct timekeeper *tk,
 	 *
 	 * XXX - TODO: Doc ntp_error calculation.
 	 */
+	if (tk->tkr.mult + mult_adj < mult_adj) {
+		/* NTP adjustment caused clocksource mult overflow */
+		WARN_ON_ONCE(1);
+		return;
+	}
+
 	tk->tkr.mult += mult_adj;
 	tk->xtime_interval += interval;
 	tk->tkr.xtime_nsec -= offset;