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-rw-r--r--tools/perf/builtin-kvm.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 935d522..fbc2888 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -888,11 +888,18 @@ static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx,
while ((event = perf_evlist__mmap_read(kvm->evlist, idx)) != NULL) {
err = perf_evlist__parse_sample(kvm->evlist, event, &sample);
if (err) {
+ perf_evlist__mmap_consume(kvm->evlist, idx);
pr_err("Failed to parse sample\n");
return -1;
}
err = perf_session_queue_event(kvm->session, event, &sample, 0);
+ /*
+ * FIXME: Here we can't consume the event, as perf_session_queue_event will
+ * point to it, and it'll get possibly overwritten by the kernel.
+ */
+ perf_evlist__mmap_consume(kvm->evlist, idx);
+
if (err) {
pr_err("Failed to enqueue sample: %d\n", err);
return -1;
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