1 files changed, 16 insertions, 0 deletions

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 5aeb4c74fb99..932babd9e86c 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -4968,6 +4968,11 @@ static void __perf_event_period(struct perf_event *event,
         }
 }
 
+static int perf_event_check_period(struct perf_event *event, u64 value)
+{
+        return event->pmu->check_period(event, value);
+}
+
 static int perf_event_period(struct perf_event *event, u64 __user *arg)
 {
         u64 value;
@@ -4984,6 +4989,9 @@ static int perf_event_period(struct perf_event *event, u64 __user *arg)
         if (event->attr.freq && value > sysctl_perf_event_sample_rate)
                 return -EINVAL;
 
+        if (perf_event_check_period(event, value))
+                return -EINVAL;
+
         event_function_call(event, __perf_event_period, &value);
 
         return 0;
@@ -9600,6 +9608,11 @@ static int perf_pmu_nop_int(struct pmu *pmu)
         return 0;
 }
 
+static int perf_event_nop_int(struct perf_event *event, u64 value)
+{
+        return 0;
+}
+
 static DEFINE_PER_CPU(unsigned int, nop_txn_flags);
 
 static void perf_pmu_start_txn(struct pmu *pmu, unsigned int flags)
@@ -9900,6 +9913,9 @@ got_cpu_context:
                 pmu->pmu_disable = perf_pmu_nop_void;
         }
 
+        if (!pmu->check_period)
+                pmu->check_period = perf_event_nop_int;
+
         if (!pmu->event_idx)
                 pmu->event_idx = perf_event_idx_default;