使用LWIP出现死机

我在STM32F767上移植RAW LWIP传输图片时，发现死机的现象，后在仿真调试时，发现是进入监听块的时候发生的硬件错误struct tcp_PCB *
tcp_listen_with_backlog(struct tcp_pcb *pcb, u8_t backlog)
{
  struct tcp_pcb_listen *lpcb;
  LWIP_UNUSED_ARG(backlog);
  LWIP_ERROR("tcp_listen: pcb already connected", pcb->state == CLOSED, return NULL);
  /* already listening? */
  if (pcb->state == LISTEN) {
    return pcb;
  }
#if SO_REUSE
  if (ip_get_option(pcb, SOF_REUSEADDR)) {
    /* Since SOF_REUSEADDR allows reusing a local address before the pcb's usage
       is declared (listen-/connection-pcb), we have to make sure now that
       this port is only used once for every local IP. */
    for(lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != NULL; lpcb = lpcb->next) {
      if (lpcb->local_port == pcb->local_port) {
        if (ip_addr_cmp(&lpcb->local_ip, &pcb->local_ip)) {
          /* this address/port is already used */
          return NULL;
        }
      }
    }
  }
#endif /* SO_REUSE */
lpcb = (struct tcp_pcb_listen *)memp_malloc(MEMP_TCP_PCB_LISTEN);在此处分配内存池时，无法分配，进入死循环
...
在这之前我定义了三个数组，怀疑是不是跟这数组有关，但不知道问题出在哪？
u32 *dcmi_line_buf[2];