该问题是怎么引起的？

函数调用过程存在对同一个mutex进行加锁两次，会导致程序崩溃或未定义行为

重现步骤

报错信息

代码地址

int32_t Recorder::RecorderImpl::Stop(bool block)
{
    std::lock_guard<std::mutex> lock(mutex_); // 问题代码(对mutex_再次已经加锁)
    if (status_ != RECORDING &&
        status_ != PAUSED) {
        MEDIA_ERR_LOG(" Stop ILLEGAL_STATE  status:%u", status_);
        return ERR_ILLEGAL_STATE;
    }

int32_t Recorder::RecorderImpl::Release()
{
    std::lock_guard<std::mutex> lock(mutex_); // 对mutex_已经加锁
    int32_t ret;
    if ((ret = InitCheck()) != SUCCESS) {
        MEDIA_ERR_LOG("Release InitCheck err");
        return ret;
    }
    if (status_ == RECORDING ||
        status_ == PAUSED) {
        if ((ret = Stop(false)) != SUCCESS) {  // 问题代码
            MEDIA_ERR_LOG("Release Stop err");
            return ret;
        }
    }

问题原始发现人@jiangyubo_zju