David Venhoff
cfcea9ee67
Based off b80915eb99
and compacted into a single commit so that it will fit on the uni git server
17 lines
470 B
C
17 lines
470 B
C
// SPDX-License-Identifier: GPL-2.0+
|
|
|
|
#include <linux/error-injection.h>
|
|
#include <linux/kprobes.h>
|
|
#include <linux/uaccess.h>
|
|
|
|
void override_function_with_return(struct pt_regs *regs)
|
|
{
|
|
/*
|
|
* Emulate 'blr'. 'regs' represents the state on entry of a predefined
|
|
* function in the kernel/module, captured on a kprobe. We don't need
|
|
* to worry about 32-bit userspace on a 64-bit kernel.
|
|
*/
|
|
regs->nip = regs->link;
|
|
}
|
|
NOKPROBE_SYMBOL(override_function_with_return);
|