CH32V103 RT-Thread进USART1接收中断，就会跳到HardFault_Handler中断里面出不来了

控制台串口改成了USART3，初始化USART1之后，进USART1接收中断，就会跳到HardFault_Handler中断里面出不来了，是什么问题。工程是用MounRiver Studio创建的RT-Thread工程


void USART1_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));


//UART1中断函数
void USART1_IRQHandler(void)
{
    GET_INT_SP();
    rt_interrupt_enter();
    if(USART_GetiTStatus(USART1, USART_IT_RXNE) != RESET)
    {
        USART_ClearITPendingBit(USART1,USART_IT_RXNE);
        uart0_rev->rev_buf[uart0_rev->rev_len] = USART_ReceiveData(USART1);   //接收数据字节
        if(++uart0_rev->rev_len>=UART0_MAX_LEN)
        {
            uart0_rev->rev_len = 0;
        }
    }
    rt_interrupt_leave();
    FREE_INT_SP();
}
static int App_Uart0_Init(void)
{
    GPIO_InitTypeDef  GPIO_InitStructure;
    USART_InitTypeDef USART_InitStructure;
    NVIC_InitTypeDef  NVIC_InitStructure;


    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);  //USART1外设时钟
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE);  //GPIOA外设时钟


    /* USART1 TX-->A.9   RX-->A.10 */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);


    USART_InitStructure.USART_BaudRate = 115200;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;


    USART_Init(USART1, &USART_InitStructure);
    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);


    NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
    USART_Cmd(USART1, ENABLE);


    rt_memset(uart0_rev,0,sizeof(struct Uart0_Rev));


    return 0;
}


void aliiot_send(u8 *buf, int len )
{
    rt_enter_critical();
    while (len--)
    {
        USART_SendData(USART1, *buf);
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET) /* waiting for sending finish */
        {
        }
        buf++;
    }
    rt_exit_critical();
}


INIT_DEVICE_EXPORT(App_Uart0_Init);