1 files changed, 13 insertions, 2 deletions

diff --git a/arch/alpha/kernel/perf_event.c b/arch/alpha/kernel/perf_event.c
index d821b17047e0..c52e7f0ee5f6 100644
--- a/arch/alpha/kernel/perf_event.c
+++ b/arch/alpha/kernel/perf_event.c
@@ -83,6 +83,8 @@ struct alpha_pmu_t {
         long pmc_left[3];
          /* Subroutine for allocation of PMCs.  Enforces constraints. */
         int (*check_constraints)(struct perf_event **, unsigned long *, int);
+        /* Subroutine for checking validity of a raw event for this PMU. */
+        int (*raw_event_valid)(u64 config);
 };
 
 /*
@@ -203,6 +205,12 @@ success:
 }
 
 
+static int ev67_raw_event_valid(u64 config)
+{
+        return config >= EV67_CYCLES && config < EV67_LAST_ET;
+};
+
+
 static const struct alpha_pmu_t ev67_pmu = {
         .event_map = ev67_perfmon_event_map,
         .max_events = ARRAY_SIZE(ev67_perfmon_event_map),
@@ -211,7 +219,8 @@ static const struct alpha_pmu_t ev67_pmu = {
         .pmc_count_mask = {EV67_PCTR_0_COUNT_MASK,  EV67_PCTR_1_COUNT_MASK,  0},
         .pmc_max_period = {(1UL<<20) - 1, (1UL<<20) - 1, 0},
         .pmc_left = {16, 4, 0},
-        .check_constraints = ev67_check_constraints
+        .check_constraints = ev67_check_constraints,
+        .raw_event_valid = ev67_raw_event_valid,
 };
 
 
@@ -609,7 +618,9 @@ static int __hw_perf_event_init(struct perf_event *event)
         } else if (attr->type == PERF_TYPE_HW_CACHE) {
                 return -EOPNOTSUPP;
         } else if (attr->type == PERF_TYPE_RAW) {
-                ev = attr->config & 0xff;
+                if (!alpha_pmu->raw_event_valid(attr->config))
+                        return -EINVAL;
+                ev = attr->config;
         } else {
                 return -EOPNOTSUPP;
         }