android - Failed to open handle to diag driver, error = 13, why? -

i looking solution found nothing solved problem.

07-10 13:55:46.943: e/diag_lib(13771):  diag_lsm_init: failed open handle diag driver, error = 13 

why can come caused?, how fix it?

thanks.

error = 13
in "errno.h"

#define eacces      13  /* permission denied */` 

so, see permission of diag

ls -al /dev/diag