| 1 | |
| 2 |
|
| 3 | #include <linux/error-injection.h>
|
| 4 | #include <linux/kprobes.h>
|
| 5 |
|
| 6 | void override_function_with_return(struct pt_regs *regs)
|
| 7 | {
|
| 8 | |
| 9 | * 'regs' represents the state on entry of a predefined function in
|
| 10 | * the kernel/module and which is captured on a kprobe.
|
| 11 | *
|
| 12 | * When kprobe returns back from exception it will override the end
|
| 13 | * of probed function and directly return to the predefined
|
| 14 | * function's caller.
|
| 15 |
|
| 16 | instruction_pointer_set(regs, procedure_link_pointer(regs));
|
| 17 | }
|
| 18 | NOKPROBE_SYMBOL(override_function_with_return);
|