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-rw-r--r--tools/perf/util/header.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 4246e7447e54..acbd046bf95c 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -1590,6 +1590,40 @@ static void free_event_desc(struct evsel *events)
free(events);
}
+static bool perf_attr_check(struct perf_event_attr *attr)
+{
+ if (attr->__reserved_1 || attr->__reserved_2 || attr->__reserved_3) {
+ pr_warning("Reserved bits are set unexpectedly. "
+ "Please update perf tool.\n");
+ return false;
+ }
+
+ if (attr->sample_type & ~(PERF_SAMPLE_MAX-1)) {
+ pr_warning("Unknown sample type (0x%llx) is detected. "
+ "Please update perf tool.\n",
+ attr->sample_type);
+ return false;
+ }
+
+ if (attr->read_format & ~(PERF_FORMAT_MAX-1)) {
+ pr_warning("Unknown read format (0x%llx) is detected. "
+ "Please update perf tool.\n",
+ attr->read_format);
+ return false;
+ }
+
+ if ((attr->sample_type & PERF_SAMPLE_BRANCH_STACK) &&
+ (attr->branch_sample_type & ~(PERF_SAMPLE_BRANCH_MAX-1))) {
+ pr_warning("Unknown branch sample type (0x%llx) is detected. "
+ "Please update perf tool.\n",
+ attr->branch_sample_type);
+
+ return false;
+ }
+
+ return true;
+}
+
static struct evsel *read_event_desc(struct feat_fd *ff)
{
struct evsel *evsel, *events = NULL;
@@ -1634,6 +1668,9 @@ static struct evsel *read_event_desc(struct feat_fd *ff)
memcpy(&evsel->core.attr, buf, msz);
+ if (!perf_attr_check(&evsel->core.attr))
+ goto error;
+
if (do_read_u32(ff, &nr))
goto error;