something error about " mount nfs" error message:authentication error why=failed

[zhongnanshi]

my kit is iac-imx6q.  when mount localhost is ok.But  mount kit to server  ,something error   ,when input: mount -t nfs -o nolock 192.168.1.88:/home/share   /mnt  ,error message is : authentication error ;why=failed(unspecified error),......failed:bad file descriptor,who can help me,thank you!

[jimmychan]

which bsp are you using?

[zhongnanshi]

my fault, i  solve this problem by  get new kernel file, old kernel file  not fit my  kit, 

                          thank you

                                friends!   @jimmychan