Linux kernel hacks study

References
http://tldp.org/LDP/lkmpg/2.6/html/


To make vulnerable kernel:

in arch/x86/kernel/entry_32.S
  .data
  include "sys_call_table_32.S"

In kernel/kallsyms.c
  extern void * sys_call_table[];
  EXPORT_SYMBOL(sys_call_table);