1 files changed, 6 insertions, 1 deletions

diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index 0500f10b5041..e186ee1e63f6 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -53,7 +53,12 @@ armpmu_map_cache_event(const unsigned (*cache_map)
 static int
 armpmu_map_hw_event(const unsigned (*event_map)[PERF_COUNT_HW_MAX], u64 config)
 {
-        int mapping = (*event_map)[config];
+        int mapping;
+
+        if (config >= PERF_COUNT_HW_MAX)
+                return -EINVAL;
+
+        mapping = (*event_map)[config];
         return mapping == HW_OP_UNSUPPORTED ? -ENOENT : mapping;
 }