STM32F429 Ethernet crash

I use STM32F429, refer to en. Stsw-stm32070 source code, remove lwip, only Ethernet data transceiver, found a long time communication, Ethernet will crash, mainly set TBUS, RBUS, RS, ETS。But I used the following code in the interrupt, and it could not be restored. The program has been in the Ethernet interrupt state, so the data could not be sent or received. How to solve this problem

if (ETH->DMASR & INT_RBUIE) 

{

/* Receive buffer unavailable, resume DMA */

ETH->DMASR = ETH_DMASR_RBUS;

ETH->DMARPDR = 0;

  }

 if (ETH->DMASR & INT_TBUIE) 

{

/* Receive buffer unavailable, resume DMA */

ETH->DMASR = ETH_DMASR_TBUS;

ETH->DMATPDR = 0;

  }

ETH->DMASR = ETH_DMASR_NIS | ETH_DMASR_AIS;