How to find the symbole of a specific c function when no symbols loaded in user mode?
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    int (*my_printk)(const char *fmt, ...);
    my_printk = find_symbol_address("printk");
    (*my_printk)("Hello, world!\n");

The above is mentioned in [this question][1],how does OP find the symbol address when `the LSM framework doesn't export its symbols`?

Though the OP's question is in kernel mode,I am just curious how to do it in user mode:)

  [1]: http://stackoverflow.com/questions/6434701/having-trouble-wrapping-functions-in-the-linux-kernel