[求助] IAR中一段程序，有断点是正常运行，全速则异常？

IAR中一段程序，有断点是正常运行，全速则异常？关闭所有中断也不起作用，好奇怪。

                                MAC_INDIRECT_BUFFER macBufferInfo;

                                BYTE *packet;

                                /* if there is enough room for the TICK and packet pointer */
                                macBufferInfo.buffer = (MAC_INDIRECT_BUFFER_INFO*)SRAMalloc(sizeof(MAC_INDIRECT_BUFFER_INFO));
                                if(macBufferInfo.buffer == NULL)
                                {
                      &

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