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-rw-r--r--include/linux/perf_event.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 76f4265efee9..3e270822b915 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -1347,6 +1347,9 @@ static inline void perf_sample_save_brstack(struct perf_sample_data *data,
if (branch_sample_hw_index(event))
size += sizeof(u64);
+
+ brs->nr = min_t(u16, event->attr.sample_max_stack, brs->nr);
+
size += brs->nr * sizeof(struct perf_branch_entry);
/*