1 files changed, 3 insertions, 1 deletions

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 534a8770ee7f..09836a537fc5 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -51,7 +51,7 @@ out_close:
 struct perf_session *perf_session__new(const char *filename, int mode,
                                        bool force)
 {
-        size_t len = strlen(filename) + 1;
+        size_t len = filename ? strlen(filename) + 1 : 0;
         struct perf_session *self = zalloc(sizeof(*self) + len);
 
         if (self == NULL)
@@ -61,6 +61,8 @@ struct perf_session *perf_session__new(const char *filename, int mode,
                 goto out_delete;
 
         memcpy(self->filename, filename, len);
+        self->threads = RB_ROOT;
+        self->last_match = NULL;
         self->mmap_window = 32;
         self->cwd = NULL;
         self->cwdlen = 0;