[aarch64] nvidia-smi shows “No devices were found”

I have insmod nvidia.ko successfully, but when run nvidia-smi, I got error information as below:
[ 53.953419] NVRM: GPU 0000:01:00.0: RmInitAdapter failed! (0x31:0xffff:2449)
[ 53.953576] NVRM: GPU 0000:01:00.0: rm_init_adapter failed, device minor number 0
[ 54.081044] NVRM: GPU 0000:01:00.0: RmInitAdapter failed! (0x31:0xffff:2449)
[ 54.081165] NVRM: GPU 0000:01:00.0: rm_init_adapter failed, device minor number 0

And the the buf_report file as attachment.
nvidia-bug-report.log.gz (818.8 KB)