1 files changed, 2 insertions, 2 deletions

diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 2f33ca9899bd..7400e5147e13 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -288,7 +288,7 @@ int event__synthesize_kernel_mmap(event__handler_t process,
          */
         struct process_symbol_args args = { .name = symbol_name, };
 
-        mmap_name = machine__mmap_name(machine, name_buff);
+        mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff));
         if (machine__is_host(machine)) {
                 /*
                  * kernel uses PERF_RECORD_MISC_USER for user space maps,
@@ -399,7 +399,7 @@ static int event__process_kernel_mmap(event_t *self,
                 goto out_problem;
         }
 
-        machine__mmap_name(machine, kmmap_prefix);
+        machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix));
         if (machine__is_host(machine))
                 kernel_type = DSO_TYPE_KERNEL;
         else