sample_pciv错误的原因

跑sample中的pciv，打开宏STREAM_SAVE_FILE，一段时间后，出现错误，谁知道什么原因？
[code]Send VeStream -> VeChn[ 0], PackCnt[1], Seq:36018, DataLen[  4226], hours:0
Func:PCIV_Trans_SendData -> dma task fail,s32ret= 0xa01a8040
PCIV_Trans_SendData, times:1
[get_shm_rw_pointer, 521]: Thread get rp/wp from shared mem wait timeout, system is not stable![0x0]
Func:PCIV_Trans_SendData -> dma task fail,s32ret= 0xa01a8040
PCIV_Trans_SendData, times:2
[get_shm_rw_pointer, 521]: Thread get rp/wp from shared mem wait timeout, system is not stable![0x0]
Func:PCIV_Trans_SendData -> dma task fail,s32ret= 0xa01a8040[/code]