T113跑csitest，出现不能分配连续空间问题，求大神指点

[Honey130602]

T113跑csitest，外接CVBS摄像头，空间由应用程序分配，调用到内核程序时，一直报不能分配连续空间，
[ 153.341696] ++++++++++[arm_iommu_map_sg][1742]+++++++++++
[ 153.350890] ++++++++++[vb2_dc_get_userptr][475]size:518400+++++++++++++
[ 153.358403] ++++++++++[vb2_dc_get_userptr][533]n_pages:0x7f,offset:0x0,size:0x7e900+++++++++++++
[ 153.368327] +++++++++[vb2_dc_get_contiguous_size][56]expected:0x45ec0000++++++++++
[ 153.376863] +++++++++[vb2_dc_get_contiguous_size][60]dmaAddr:0x45ec0000,expected:0x45ec0000,len:458752++++++++++
[ 153.388318] +++++++++[vb2_dc_get_contiguous_size][60]dmaAddr:0x45e34000,expected:0x45f30000,len:8192++++++++++
[ 153.399572] +++++++++[vb2_dc_get_contiguous_size][63]dma addr:0x45e34000++++++++++
[ 153.408118] [vb2_dc_get_userptr][557]contiguous mapping is too small 458752/518400
VIDIOC_QBUF failed
Got signal 11, exiting ...
disp_disable:disp_set_addr fail to set layer info
disp_disable:disp_set_addr fail to set layer info
有大神遇到过类似问题吗？求指点

[Honey130602]

@honey130602 内存分配机制出问题导致，选错了