Did you mean to use /dev/tty? /dev/console is owned by another process, owned by root. What are you trying to do? Write a message on the console? if so, try the write command. It allows you to specify both a user and a specific device as the destination for a message.
I think I meet the problem with console. in other devices such as: tty, tty0, It run OK.
Can i restart the /dev/console? or link the /dev/tty to the /dev/console?