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-rw-r--r--kernel/trace/trace_events_hist.c2
-rw-r--r--kernel/trace/trace_synth.h2
2 files changed, 3 insertions, 1 deletions
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 1b2ef6490229..3b22e2122d1a 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -1398,6 +1398,8 @@ static int hist_trigger_elt_data_alloc(struct tracing_map_elt *elt)
n_str = hist_data->n_field_var_str + hist_data->n_save_var_str;
+ BUILD_BUG_ON(STR_VAR_LEN_MAX & (sizeof(u64) - 1));
+
size = STR_VAR_LEN_MAX;
for (i = 0; i < n_str; i++) {
diff --git a/kernel/trace/trace_synth.h b/kernel/trace/trace_synth.h
index ac35c45207c4..5166705d1556 100644
--- a/kernel/trace/trace_synth.h
+++ b/kernel/trace/trace_synth.h
@@ -7,7 +7,7 @@
#define SYNTH_SYSTEM "synthetic"
#define SYNTH_FIELDS_MAX 32
-#define STR_VAR_LEN_MAX 32 /* must be multiple of sizeof(u64) */
+#define STR_VAR_LEN_MAX MAX_FILTER_STR_VAL /* must be multiple of sizeof(u64) */
struct synth_field {
char *type;