diff --git a/systrace/include/common/shared_constants.c b/systrace/include/common/shared_constants.c
index 7fc06b43c382b0e22fea4e92e98dc9b916e8ecee..b9c96527e29a50df6d43521aa5fc37b084eac912 100644
--- a/systrace/include/common/shared_constants.c
+++ b/systrace/include/common/shared_constants.c
@@ -115,7 +115,9 @@ bool checkAndUpdateTimer(int level) {
         return false;
     }
 
-    pthread_mutex_lock(&shared_data->g_trace_mutex);
+    if (pthread_mutex_trylock(&shared_data->g_trace_mutex) != 0) {
+        return false;
+    }
 
     bool* dump_flag = NULL;
     float* interval = NULL;
diff --git a/systrace/src/os/os_probe.c b/systrace/src/os/os_probe.c
index a9636bb35c36ad4bf72375e59ab830e33afa0ab0..4d91016a97212385e734e2ade8ad754411fe2eb0 100644
--- a/systrace/src/os/os_probe.c
+++ b/systrace/src/os/os_probe.c
@@ -506,11 +506,12 @@ int bpf_buffer_init_from_pin(struct bpf_buffer **buffer_ptr, const char *map_pat
         return -1;
     }
     *buffer_ptr = buffer;
-    close(map_fd); // 不再需要，buffer 内部已经引用 fd 或 dup
+    close(map_fd);
     return 0;
 }
 
 void cleanup_osprobe() {
+    sig_int();
     FILE *fp;
     fp = popen(RM_MAP_PATH, "r");
     if (fp != NULL) {
@@ -598,7 +599,6 @@ int run_osprobe() {
         }
     }    
 
-    fprintf(stderr, "[OS_PROBE RANK_%d] sysTrace ebpf trace finished\n", local_rank);
 err:
     cleanup_osprobe();
     return ret;