diff --git a/components/app_trace/gcov/gcov_rtio.c b/components/app_trace/gcov/gcov_rtio.c
index 619a631dc1..6744354563 100644
--- a/components/app_trace/gcov/gcov_rtio.c
+++ b/components/app_trace/gcov/gcov_rtio.c
@@ -68,8 +68,12 @@ static int esp_dbg_stub_gcov_dump_do(void)
     int ret = ESP_OK;
     FILE* old_stderr = stderr;
     FILE* old_stdout = stdout;
-    struct syscall_stub_table* old_table = syscall_table_ptr_pro;
+    static struct syscall_stub_table *old_tables[portNUM_PROCESSORS];
 
+    old_tables[0] = syscall_table_ptr_pro;
+#if portNUM_PROCESSORS > 1
+    old_tables[1] = syscall_table_ptr_app;
+#endif
     ESP_EARLY_LOGV(TAG, "Alloc apptrace down buf %d bytes", ESP_GCOV_DOWN_BUF_SIZE);
     void *down_buf = malloc(ESP_GCOV_DOWN_BUF_SIZE);
     if (down_buf == NULL) {
@@ -80,12 +84,14 @@ static int esp_dbg_stub_gcov_dump_do(void)
     esp_apptrace_down_buffer_config(down_buf, ESP_GCOV_DOWN_BUF_SIZE);
     ESP_EARLY_LOGV(TAG, "Dump data...");
     // incase of dual-core chip APP and PRO CPUs share the same table, so it is safe to save only PRO's table
-    memcpy(&s_gcov_stub_table, old_table, sizeof(s_gcov_stub_table));
+    memcpy(&s_gcov_stub_table, syscall_table_ptr_pro, sizeof(s_gcov_stub_table));
     s_gcov_stub_table._lock_acquire_recursive = &gcov_stub_lock_acquire_recursive;
     s_gcov_stub_table._lock_release_recursive = &gcov_stub_lock_release_recursive;
     s_gcov_stub_table._lock_try_acquire_recursive = &gcov_stub_lock_try_acquire_recursive,
-
     syscall_table_ptr_pro = &s_gcov_stub_table;
+#if portNUM_PROCESSORS > 1
+    syscall_table_ptr_app = &s_gcov_stub_table;
+#endif
     stderr = (FILE*) &__sf_fake_stderr;
     stdout = (FILE*) &__sf_fake_stdout;
     __gcov_dump();
@@ -93,8 +99,10 @@ static int esp_dbg_stub_gcov_dump_do(void)
     __gcov_reset();
     stdout = old_stdout;
     stderr = old_stderr;
-    syscall_table_ptr_pro = old_table;
-
+    syscall_table_ptr_pro = old_tables[0];
+#if portNUM_PROCESSORS > 1
+    syscall_table_ptr_app = old_tables[1];
+#endif
     ESP_EARLY_LOGV(TAG, "Free apptrace down buf");
     free(down_buf);
     ESP_EARLY_LOGV(TAG, "Finish file transfer session");
@@ -102,6 +110,7 @@ static int esp_dbg_stub_gcov_dump_do(void)
     if (ret != ESP_OK) {
         ESP_EARLY_LOGE(TAG, "Failed to send files transfer stop cmd (%d)!", ret);
     }
+    ESP_EARLY_LOGV(TAG, "exit %d", ret);
     return ret;
 }
 
@@ -155,7 +164,9 @@ void esp_gcov_dump(void)
 void *gcov_rtio_fopen(const char *path, const char *mode)
 {
     ESP_EARLY_LOGV(TAG, "%s '%s' '%s'", __FUNCTION__, path, mode);
-    return esp_apptrace_fopen(ESP_APPTRACE_DEST_TRAX, path, mode);
+    void *f = esp_apptrace_fopen(ESP_APPTRACE_DEST_TRAX, path, mode);
+    ESP_EARLY_LOGV(TAG, "%s ret %p", __FUNCTION__, f);
+    return f;
 }
 
 int gcov_rtio_fclose(void *stream)