1 files changed, 1 insertions, 0 deletions
diff --git a/src/cpu.c b/src/cpu.c
index 79a820d39e..a89a0cca6a 100644
--- a/src/cpu.c
+++ b/src/cpu.c
@@ -225,6 +225,7 @@ void rt_cpus_unlock(rt_base_t level)
 
     if (pcpu->current_thread != RT_NULL)
     {
+        RT_ASSERT(pcpu->current_thread->cpus_lock_nest > 0);
         pcpu->current_thread->cpus_lock_nest--;
 
         if (pcpu->current_thread->cpus_lock_nest == 0)