diff --git a/arch/x86/kernel/cpu/resctrl/monitor.c b/arch/x86/kernel/cpu/resctrl/monitor.c
index 008bcb15fe96..85d275573af8 100644
--- a/arch/x86/kernel/cpu/resctrl/monitor.c
+++ b/arch/x86/kernel/cpu/resctrl/monitor.c
@@ -225,11 +225,19 @@ static u64 mbm_overflow_count(u64 prev_msr, u64 cur_msr)
 
 static u64 __mon_event_count(u32 rmid, struct rmid_read *rr)
 {
-	struct mbm_state *m;
+	struct mbm_state *m = NULL;
 	u64 chunks, tval;
 
 	tval = __rmid_read(rmid, rr->evtid);
 	if (tval & (RMID_VAL_ERROR | RMID_VAL_UNAVAIL)) {
+		if (tval & RMID_VAL_UNAVAIL) {
+			if (rr->evtid == QOS_L3_MBM_TOTAL_EVENT_ID)
+				m = &rr->d->mbm_total[rmid];
+			else if (rr->evtid == QOS_L3_MBM_LOCAL_EVENT_ID)
+				m = &rr->d->mbm_local[rmid];
+			if (m)
+				m->prev_msr = 0;
+		}
 		return tval;
 	}
 	switch (rr->evtid) {