1 files changed, 6 insertions, 0 deletions
diff --git a/py/runtime.h b/py/runtime.h
index a93488e2cd..f42039cab9 100644
--- a/py/runtime.h
+++ b/py/runtime.h
@@ -169,6 +169,12 @@ static inline void mp_thread_init_state(mp_state_thread_t *ts, size_t stack_size
     ts->nlr_jump_callback_top = NULL;
     ts->mp_pending_exception = MP_OBJ_NULL;
 
+    #if MICROPY_PY_SYS_SETTRACE
+    ts->prof_trace_callback = MP_OBJ_NULL;
+    ts->prof_callback_is_executing = false;
+    ts->current_code_state = NULL;
+    #endif
+
     // If locals/globals are not given, inherit from main thread
     if (locals == NULL) {
         locals = mp_state_ctx.thread.dict_locals;